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39
40#include "qstyle.h"
41#include "qapplication.h"
42#include "qpainter.h"
43#include "qwidget.h"
44#include "qbitmap.h"
45#include "qpixmapcache.h"
46#include "qstyleoption.h"
47#include "private/qstyle_p.h"
48#include "private/qguiapplication_p.h"
49#include <qpa/qplatformtheme.h>
50#ifndef QT_NO_DEBUG
51#include "qdebug.h"
52#endif
53
54#include <limits.h>
55#include <algorithm>
56
57QT_BEGIN_NAMESPACE
58
59static const int MaxBits = 8 * sizeof(QSizePolicy::ControlType);
60
61static int unpackControlTypes(QSizePolicy::ControlTypes controls, QSizePolicy::ControlType *array)
62{
63 if (!controls)
64 return 0;
65
66 // optimization: exactly one bit is set
67 if (qPopulationCount(uint(controls)) == 1) {
68 array[0] = QSizePolicy::ControlType(uint(controls));
69 return 1;
70 }
71
72 int count = 0;
73 for (int i = 0; i < MaxBits; ++i) {
74 if (uint bit = (controls & (0x1 << i)))
75 array[count++] = QSizePolicy::ControlType(bit);
76 }
77 return count;
78}
79
80/*!
81 \page qwidget-styling.html
82 \title Styling
83
84 Qt's built-in widgets use the QStyle class to perform nearly all
85 of their drawing. QStyle is an abstract base class that
86 encapsulates the look and feel of a GUI, and can be used to make
87 the widgets look exactly like the equivalent native widgets or to
88 give the widgets a custom look.
89
90 Qt provides a set of QStyle subclasses that emulate the native
91 look of the different platforms supported by Qt (QWindowsStyle,
92 QMacStyle, etc.). These styles are built into the
93 Qt GUI module, other styles can be made available using Qt's
94 plugin mechansim.
95
96 Most functions for drawing style elements take four arguments:
97
98 \list
99 \li an enum value specifying which graphical element to draw
100 \li a QStyleOption object specifying how and where to render that element
101 \li a QPainter object that should be used to draw the element
102 \li a QWidget object on which the drawing is performed (optional)
103 \endlist
104
105 The style gets all the information it needs to render the
106 graphical element from the QStyleOption class. The widget is
107 passed as the last argument in case the style needs it to perform
108 special effects (such as animated default buttons on \macos),
109 but it isn't mandatory. In fact, QStyle can be used to draw on any
110 paint device (not just widgets), in which case the widget argument
111 is a zero pointer.
112
113 \image paintsystem-stylepainter.png
114
115 The paint system also provides the QStylePainter class inheriting
116 from QPainter. QStylePainter is a convenience class for drawing
117 QStyle elements inside a widget, and extends QPainter with a set
118 of high-level drawing functions implemented on top of QStyle's
119 API. The advantage of using QStylePainter is that the parameter
120 lists get considerably shorter.
121
122 \table 100%
123 \row
124 \li \inlineimage paintsystem-icon.png
125 \li \b QIcon
126
127 The QIcon class provides scalable icons in different modes and states.
128
129 QIcon can generate pixmaps reflecting an icon's state, mode and
130 size. These pixmaps are generated from the set of pixmaps
131 made available to the icon, and are used by Qt widgets to show an
132 icon representing a particular action.
133
134 The rendering of a QIcon object is handled by the QIconEngine
135 class. Each icon has a corresponding icon engine that is
136 responsible for drawing the icon with a requested size, mode and
137 state.
138
139 \endtable
140
141 For more information about widget styling and appearance, see the
142 \l{Styles and Style Aware Widgets}.
143*/
144
145
146/*!
147 \class QStyle
148 \brief The QStyle class is an abstract base class that encapsulates the look and feel of a GUI.
149
150 \ingroup appearance
151 \inmodule QtWidgets
152
153 Qt contains a set of QStyle subclasses that emulate the styles of
154 the different platforms supported by Qt (QWindowsStyle,
155 QMacStyle etc.). By default, these styles are built
156 into the Qt GUI module. Styles can also be made available as
157 plugins.
158
159 Qt's built-in widgets use QStyle to perform nearly all of their
160 drawing, ensuring that they look exactly like the equivalent
161 native widgets. The diagram below shows a QComboBox in nine
162 different styles.
163
164 \image qstyle-comboboxes.png Nine combo boxes
165
166 Topics:
167
168 \tableofcontents
169
170 \section1 Setting a Style
171
172 The style of the entire application can be set using the
173 QApplication::setStyle() function. It can also be specified by the
174 user of the application, using the \c -style command-line option:
175
176 \snippet code/src_gui_styles_qstyle.cpp 0
177
178 If no style is specified, Qt will choose the most appropriate
179 style for the user's platform or desktop environment.
180
181 A style can also be set on an individual widget using the
182 QWidget::setStyle() function.
183
184 \section1 Developing Style-Aware Custom Widgets
185
186 If you are developing custom widgets and want them to look good on
187 all platforms, you can use QStyle functions to perform parts of
188 the widget drawing, such as drawItemText(), drawItemPixmap(),
189 drawPrimitive(), drawControl(), and drawComplexControl().
190
191 Most QStyle draw functions take four arguments:
192 \list
193 \li an enum value specifying which graphical element to draw
194 \li a QStyleOption specifying how and where to render that element
195 \li a QPainter that should be used to draw the element
196 \li a QWidget on which the drawing is performed (optional)
197 \endlist
198
199 For example, if you want to draw a focus rectangle on your
200 widget, you can write:
201
202 \snippet styles/styles.cpp 1
203
204 QStyle gets all the information it needs to render the graphical
205 element from QStyleOption. The widget is passed as the last
206 argument in case the style needs it to perform special effects
207 (such as animated default buttons on \macos), but it isn't
208 mandatory. In fact, you can use QStyle to draw on any paint
209 device, not just widgets, by setting the QPainter properly.
210
211 QStyleOption has various subclasses for the various types of
212 graphical elements that can be drawn. For example,
213 PE_FrameFocusRect expects a QStyleOptionFocusRect argument.
214
215 To ensure that drawing operations are as fast as possible,
216 QStyleOption and its subclasses have public data members. See the
217 QStyleOption class documentation for details on how to use it.
218
219 For convenience, Qt provides the QStylePainter class, which
220 combines a QStyle, a QPainter, and a QWidget. This makes it
221 possible to write
222
223 \snippet styles/styles.cpp 5
224 \dots
225 \snippet styles/styles.cpp 7
226
227 instead of
228
229 \snippet styles/styles.cpp 2
230 \dots
231 \snippet styles/styles.cpp 3
232
233 \section1 Creating a Custom Style
234
235 You can create a custom look and feel for your application by
236 creating a custom style. There are two approaches to creating a
237 custom style. In the static approach, you either choose an
238 existing QStyle class, subclass it, and reimplement virtual
239 functions to provide the custom behavior, or you create an entire
240 QStyle class from scratch. In the dynamic approach, you modify the
241 behavior of your system style at runtime. The static approach is
242 described below. The dynamic approach is described in QProxyStyle.
243
244 The first step in the static approach is to pick one of the styles
245 provided by Qt from which you will build your custom style. Your
246 choice of QStyle class will depend on which style resembles your
247 desired style the most. The most general class that you can use as
248 a base is QCommonStyle (not QStyle). This is because Qt requires
249 its styles to be \l{QCommonStyle}s.
250
251 Depending on which parts of the base style you want to change,
252 you must reimplement the functions that are used to draw those
253 parts of the interface. To illustrate this, we will modify the
254 look of the spin box arrows drawn by QWindowsStyle. The arrows
255 are \e{primitive elements} that are drawn by the drawPrimitive()
256 function, so we need to reimplement that function. We need the
257 following class declaration:
258
259 \snippet customstyle/customstyle.h 0
260
261 To draw its up and down arrows, QSpinBox uses the
262 PE_IndicatorSpinUp and PE_IndicatorSpinDown primitive elements.
263 Here's how to reimplement the drawPrimitive() function to draw
264 them differently:
265
266 \snippet customstyle/customstyle.cpp 2
267 \snippet customstyle/customstyle.cpp 3
268 \snippet customstyle/customstyle.cpp 4
269
270 Notice that we don't use the \c widget argument, except to pass it
271 on to the QWindowStyle::drawPrimitive() function. As mentioned
272 earlier, the information about what is to be drawn and how it
273 should be drawn is specified by a QStyleOption object, so there is
274 no need to ask the widget.
275
276 If you need to use the \c widget argument to obtain additional
277 information, be careful to ensure that it isn't 0 and that it is
278 of the correct type before using it. For example:
279
280 \snippet customstyle/customstyle.cpp 0
281 \dots
282 \snippet customstyle/customstyle.cpp 1
283
284 When implementing a custom style, you cannot assume that the
285 widget is a QSpinBox just because the enum value is called
286 PE_IndicatorSpinUp or PE_IndicatorSpinDown.
287
288 The documentation for the \l{widgets/styles}{Styles} example
289 covers this topic in more detail.
290
291 \warning Qt style sheets are currently not supported for custom QStyle
292 subclasses. We plan to address this in some future release.
293
294
295 \section1 Using a Custom Style
296
297 There are several ways of using a custom style in a Qt
298 application. The simplest way is to pass the custom style to the
299 QApplication::setStyle() static function before creating the
300 QApplication object:
301
302 \snippet customstyle/main.cpp using a custom style
303
304 You can call QApplication::setStyle() at any time, but by calling
305 it before the constructor, you ensure that the user's preference,
306 set using the \c -style command-line option, is respected.
307
308 You may want to make your custom style available for use in other
309 applications, which may not be yours and hence not available for
310 you to recompile. The Qt Plugin system makes it possible to create
311 styles as plugins. Styles created as plugins are loaded as shared
312 objects at runtime by Qt itself. Please refer to the \l{How to Create Qt Plugins}{Qt Plugin}
313 documentation for more information on how to go about creating a style
314 plugin.
315
316 Compile your plugin and put it into Qt's \c plugins/styles
317 directory. We now have a pluggable style that Qt can load
318 automatically. To use your new style with existing applications,
319 simply start the application with the following argument:
320
321 \snippet code/src_gui_styles_qstyle.cpp 1
322
323 The application will use the look and feel from the custom style you
324 implemented.
325
326 \section1 Right-to-Left Desktops
327
328 Languages written from right to left (such as Arabic and Hebrew)
329 usually also mirror the whole layout of widgets, and require the
330 light to come from the screen's top-right corner instead of
331 top-left.
332
333 If you create a custom style, you should take special care when
334 drawing asymmetric elements to make sure that they also look
335 correct in a mirrored layout. An easy way to test your styles is
336 to run applications with the \c -reverse command-line option or
337 to call QApplication::setLayoutDirection() in your \c main()
338 function.
339
340 Here are some things to keep in mind when making a style work well in a
341 right-to-left environment:
342
343 \list
344 \li subControlRect() and subElementRect() return rectangles in screen coordinates
345 \li QStyleOption::direction indicates in which direction the item should be drawn in
346 \li If a style is not right-to-left aware it will display items as if it were left-to-right
347 \li visualRect(), visualPos(), and visualAlignment() are helpful functions that will
348 translate from logical to screen representations.
349 \li alignedRect() will return a logical rect aligned for the current direction
350 \endlist
351
352 \section1 Styles in Item Views
353
354 The painting of items in views is performed by a delegate. Qt's
355 default delegate, QStyledItemDelegate, is also used for calculating bounding
356 rectangles of items, and their sub-elements for the various kind
357 of item \l{Qt::ItemDataRole}{data roles}
358 QStyledItemDelegate supports. See the QStyledItemDelegate class
359 description to find out which datatypes and roles are supported. You
360 can read more about item data roles in \l{Model/View Programming}.
361
362 When QStyledItemDelegate paints its items, it draws
363 CE_ItemViewItem, and calculates their size with CT_ItemViewItem.
364 Note also that it uses SE_ItemViewItemText to set the size of
365 editors. When implementing a style to customize drawing of item
366 views, you need to check the implementation of QCommonStyle (and
367 any other subclasses from which your style
368 inherits). This way, you find out which and how
369 other style elements are painted, and you can then reimplement the
370 painting of elements that should be drawn differently.
371
372 We include a small example where we customize the drawing of item
373 backgrounds.
374
375 \snippet customviewstyle/customviewstyle.cpp 0
376
377 The primitive element PE_PanelItemViewItem is responsible for
378 painting the background of items, and is called from
379 \l{QCommonStyle}'s implementation of CE_ItemViewItem.
380
381 To add support for drawing of new datatypes and item data roles,
382 it is necessary to create a custom delegate. But if you only
383 need to support the datatypes implemented by the default
384 delegate, a custom style does not need an accompanying
385 delegate. The QStyledItemDelegate class description gives more
386 information on custom delegates.
387
388 The drawing of item view headers is also done by the style, giving
389 control over size of header items and row and column sizes.
390
391 \sa QStyleOption, QStylePainter, {Styles Example},
392 {Styles and Style Aware Widgets}, QStyledItemDelegate, {Styling}
393*/
394
395/*!
396 Constructs a style object.
397*/
398QStyle::QStyle()
399 : QObject(*new QStylePrivate)
400{
401 Q_D(QStyle);
402 d->proxyStyle = this;
403}
404
405/*!
406 \internal
407
408 Constructs a style object.
409*/
410QStyle::QStyle(QStylePrivate &dd)
411 : QObject(dd)
412{
413 Q_D(QStyle);
414 d->proxyStyle = this;
415}
416
417/*!
418 Destroys the style object.
419*/
420QStyle::~QStyle()
421{
422}
423
424/*!
425 Initializes the appearance of the given \a widget.
426
427 This function is called for every widget at some point after it
428 has been fully created but just \e before it is shown for the very
429 first time.
430
431 Note that the default implementation does nothing. Reasonable
432 actions in this function might be to call the
433 QWidget::setBackgroundMode() function for the widget. Do not use
434 the function to set, for example, the geometry. Reimplementing
435 this function provides a back-door through which the appearance
436 of a widget can be changed, but with Qt's style engine it is
437 rarely necessary to implement this function; reimplement
438 drawItemPixmap(), drawItemText(), drawPrimitive(), etc. instead.
439
440 The QWidget::inherits() function may provide enough information to
441 allow class-specific customizations. But because new QStyle
442 subclasses are expected to work reasonably with all current and \e
443 future widgets, limited use of hard-coded customization is
444 recommended.
445
446 \sa unpolish()
447*/
448void QStyle::polish(QWidget * /* widget */)
449{
450}
451
452/*!
453 Uninitialize the given \a{widget}'s appearance.
454
455 This function is the counterpart to polish(). It is called for
456 every polished widget whenever the style is dynamically changed;
457 the former style has to unpolish its settings before the new style
458 can polish them again.
459
460 Note that unpolish() will only be called if the widget is
461 destroyed. This can cause problems in some cases, e.g, if you
462 remove a widget from the UI, cache it, and then reinsert it after
463 the style has changed; some of Qt's classes cache their widgets.
464
465 \sa polish()
466*/
467void QStyle::unpolish(QWidget * /* widget */)
468{
469}
470
471/*!
472 \fn void QStyle::polish(QApplication * application)
473 \overload
474
475 Late initialization of the given \a application object.
476*/
477void QStyle::polish(QApplication * /* app */)
478{
479}
480
481/*!
482 \fn void QStyle::unpolish(QApplication * application)
483 \overload
484
485 Uninitialize the given \a application.
486*/
487void QStyle::unpolish(QApplication * /* app */)
488{
489}
490
491/*!
492 \fn void QStyle::polish(QPalette & palette)
493 \overload
494
495 Changes the \a palette according to style specific requirements
496 for color palettes (if any).
497
498 \sa QPalette, QApplication::setPalette()
499*/
500void QStyle::polish(QPalette & /* pal */)
501{
502}
503
504/*!
505 \fn QRect QStyle::itemTextRect(const QFontMetrics &metrics, const QRect &rectangle, int alignment, bool enabled, const QString &text) const
506
507 Returns the area within the given \a rectangle in which to draw
508 the provided \a text according to the specified font \a metrics
509 and \a alignment. The \a enabled parameter indicates whether or
510 not the associated item is enabled.
511
512 If the given \a rectangle is larger than the area needed to render
513 the \a text, the rectangle that is returned will be offset within
514 \a rectangle according to the specified \a alignment. For
515 example, if \a alignment is Qt::AlignCenter, the returned
516 rectangle will be centered within \a rectangle. If the given \a
517 rectangle is smaller than the area needed, the returned rectangle
518 will be the smallest rectangle large enough to render the \a text.
519
520 \sa Qt::Alignment
521*/
522QRect QStyle::itemTextRect(const QFontMetrics &metrics, const QRect &rect, int alignment, bool enabled,
523 const QString &text) const
524{
525 QRect result;
526 int x, y, w, h;
527 rect.getRect(&x, &y, &w, &h);
528 if (!text.isEmpty()) {
529 result = metrics.boundingRect(x, y, w, h, alignment, text);
530 if (!enabled && proxy()->styleHint(SH_EtchDisabledText)) {
531 result.setWidth(result.width()+1);
532 result.setHeight(result.height()+1);
533 }
534 } else {
535 result = QRect(x, y, w, h);
536 }
537 return result;
538}
539
540/*!
541 \fn QRect QStyle::itemPixmapRect(const QRect &rectangle, int alignment, const QPixmap &pixmap) const
542
543 Returns the area within the given \a rectangle in which to draw
544 the specified \a pixmap according to the defined \a alignment.
545*/
546QRect QStyle::itemPixmapRect(const QRect &rect, int alignment, const QPixmap &pixmap) const
547{
548 QRect result;
549 int x, y, w, h;
550 rect.getRect(&x, &y, &w, &h);
551
552 const int pixmapWidth = pixmap.width()/pixmap.devicePixelRatio();
553 const int pixmapHeight = pixmap.height()/pixmap.devicePixelRatio();
554
555 if ((alignment & Qt::AlignVCenter) == Qt::AlignVCenter)
556 y += h/2 - pixmapHeight/2;
557 else if ((alignment & Qt::AlignBottom) == Qt::AlignBottom)
558 y += h - pixmapHeight;
559 if ((alignment & Qt::AlignRight) == Qt::AlignRight)
560 x += w - pixmapWidth;
561 else if ((alignment & Qt::AlignHCenter) == Qt::AlignHCenter)
562 x += w/2 - pixmapWidth/2;
563 else if ((alignment & Qt::AlignLeft) != Qt::AlignLeft && QGuiApplication::isRightToLeft())
564 x += w - pixmapWidth;
565 result = QRect(x, y, pixmapWidth, pixmapHeight);
566 return result;
567}
568
569/*!
570 \fn void QStyle::drawItemText(QPainter *painter, const QRect &rectangle, int alignment, const QPalette &palette, bool enabled, const QString& text, QPalette::ColorRole textRole) const
571
572 Draws the given \a text in the specified \a rectangle using the
573 provided \a painter and \a palette.
574
575 The text is drawn using the painter's pen, and aligned and wrapped
576 according to the specified \a alignment. If an explicit \a
577 textRole is specified, the text is drawn using the \a palette's
578 color for the given role. The \a enabled parameter indicates
579 whether or not the item is enabled; when reimplementing this
580 function, the \a enabled parameter should influence how the item is
581 drawn.
582
583 \sa Qt::Alignment, drawItemPixmap()
584*/
585void QStyle::drawItemText(QPainter *painter, const QRect &rect, int alignment, const QPalette &pal,
586 bool enabled, const QString& text, QPalette::ColorRole textRole) const
587{
588 if (text.isEmpty())
589 return;
590 QPen savedPen;
591 if (textRole != QPalette::NoRole) {
592 savedPen = painter->pen();
593 painter->setPen(QPen(pal.brush(textRole), savedPen.widthF()));
594 }
595 if (!enabled) {
596 if (proxy()->styleHint(SH_DitherDisabledText)) {
597 QRect br;
598 painter->drawText(rect, alignment, text, &br);
599 painter->fillRect(br, QBrush(painter->background().color(), Qt::Dense5Pattern));
600 return;
601 } else if (proxy()->styleHint(SH_EtchDisabledText)) {
602 QPen pen = painter->pen();
603 painter->setPen(pal.light().color());
604 painter->drawText(rect.adjusted(1, 1, 1, 1), alignment, text);
605 painter->setPen(pen);
606 }
607 }
608 painter->drawText(rect, alignment, text);
609 if (textRole != QPalette::NoRole)
610 painter->setPen(savedPen);
611}
612
613/*!
614 \fn void QStyle::drawItemPixmap(QPainter *painter, const QRect &rectangle, int alignment,
615 const QPixmap &pixmap) const
616
617 Draws the given \a pixmap in the specified \a rectangle, according
618 to the specified \a alignment, using the provided \a painter.
619
620 \sa drawItemText()
621*/
622
623void QStyle::drawItemPixmap(QPainter *painter, const QRect &rect, int alignment,
624 const QPixmap &pixmap) const
625{
626 qreal scale = pixmap.devicePixelRatio();
627 QRect aligned = alignedRect(QGuiApplication::layoutDirection(), QFlag(alignment), pixmap.size() / scale, rect);
628 QRect inter = aligned.intersected(rect);
629
630 painter->drawPixmap(inter.x(), inter.y(), pixmap, inter.x() - aligned.x(), inter.y() - aligned.y(), qRound(inter.width() * scale), qRound(inter.height() *scale));
631}
632
633/*!
634 \enum QStyle::PrimitiveElement
635
636 This enum describes the various primitive elements. A
637 primitive element is a common GUI element, such as a checkbox
638 indicator or button bevel.
639
640 \omitvalue PE_IndicatorViewItemCheck
641 \value PE_FrameStatusBar Obsolete. Use PE_FrameStatusBarItem instead.
642
643 \value PE_PanelButtonCommand Button used to initiate an action, for
644 example, a QPushButton.
645
646 \value PE_FrameDefaultButton This frame around a default button, e.g. in a dialog.
647 \value PE_PanelButtonBevel Generic panel with a button bevel.
648 \value PE_PanelButtonTool Panel for a Tool button, used with QToolButton.
649 \value PE_PanelLineEdit Panel for a QLineEdit.
650 \value PE_IndicatorButtonDropDown Indicator for a drop down button, for example, a tool
651 button that displays a menu.
652
653 \value PE_FrameFocusRect Generic focus indicator.
654
655 \value PE_IndicatorArrowUp Generic Up arrow.
656 \value PE_IndicatorArrowDown Generic Down arrow.
657 \value PE_IndicatorArrowRight Generic Right arrow.
658 \value PE_IndicatorArrowLeft Generic Left arrow.
659
660 \value PE_IndicatorSpinUp Up symbol for a spin widget, for example a QSpinBox.
661 \value PE_IndicatorSpinDown Down symbol for a spin widget.
662 \value PE_IndicatorSpinPlus Increase symbol for a spin widget.
663 \value PE_IndicatorSpinMinus Decrease symbol for a spin widget.
664
665 \value PE_IndicatorItemViewItemCheck On/off indicator for a view item.
666
667 \value PE_IndicatorCheckBox On/off indicator, for example, a QCheckBox.
668 \value PE_IndicatorRadioButton Exclusive on/off indicator, for example, a QRadioButton.
669
670 \value PE_IndicatorDockWidgetResizeHandle Resize handle for dock windows.
671
672 \value PE_Frame Generic frame
673 \value PE_FrameMenu Frame for popup windows/menus; see also QMenu.
674 \value PE_PanelMenuBar Panel for menu bars.
675 \value PE_PanelScrollAreaCorner Panel at the bottom-right (or
676 bottom-left) corner of a scroll area.
677
678 \value PE_FrameDockWidget Panel frame for dock windows and toolbars.
679 \value PE_FrameTabWidget Frame for tab widgets.
680 \value PE_FrameLineEdit Panel frame for line edits.
681 \value PE_FrameGroupBox Panel frame around group boxes.
682 \value PE_FrameButtonBevel Panel frame for a button bevel.
683 \value PE_FrameButtonTool Panel frame for a tool button.
684
685 \value PE_IndicatorHeaderArrow Arrow used to indicate sorting on a list or table
686 header.
687 \value PE_FrameStatusBarItem Frame for an item of a status bar; see also QStatusBar.
688
689 \value PE_FrameWindow Frame around a MDI window or a docking window.
690
691 \value PE_IndicatorMenuCheckMark Check mark used in a menu.
692
693 \value PE_IndicatorProgressChunk Section of a progress bar indicator; see also QProgressBar.
694
695 \value PE_IndicatorBranch Lines used to represent the branch of a tree in a tree view.
696 \value PE_IndicatorToolBarHandle The handle of a toolbar.
697 \value PE_IndicatorToolBarSeparator The separator in a toolbar.
698 \value PE_PanelToolBar The panel for a toolbar.
699 \value PE_PanelTipLabel The panel for a tip label.
700 \value PE_FrameTabBarBase The frame that is drawn for a tab bar, ususally drawn for a tab bar that isn't part of a tab widget.
701 \value PE_IndicatorTabTear Deprecated. Use \l{PE_IndicatorTabTearLeft} instead.
702 \value PE_IndicatorTabTearLeft An indicator that a tab is partially scrolled out on the left side of the visible tab bar when there are many tabs.
703 \value PE_IndicatorTabTearRight An indicator that a tab is partially scrolled out on the right side of the visible tab bar when there are many tabs.
704 \value PE_IndicatorColumnViewArrow An arrow in a QColumnView.
705
706 \value PE_Widget A plain QWidget.
707
708 \value PE_CustomBase Base value for custom primitive elements.
709 All values above this are reserved for custom use. Custom values
710 must be greater than this value.
711
712 \value PE_IndicatorItemViewItemDrop An indicator that is drawn to show where an item in an item view is about to be dropped
713 during a drag-and-drop operation in an item view.
714 \value PE_PanelItemViewItem The background for an item in an item view.
715 \value PE_PanelItemViewRow The background of a row in an item view.
716
717 \value PE_PanelStatusBar The panel for a status bar.
718
719 \value PE_IndicatorTabClose The close button on a tab bar.
720 \value PE_PanelMenu The panel for a menu.
721
722 \sa drawPrimitive()
723*/
724
725
726/*!
727 \enum QStyle::StateFlag
728
729 This enum describes flags that are used when drawing primitive
730 elements.
731
732 Note that not all primitives use all of these flags, and that the
733 flags may mean different things to different items.
734
735 \value State_None Indicates that the widget does not have a state.
736 \value State_Active Indicates that the widget is active.
737 \value State_AutoRaise Used to indicate if auto-raise appearance should be used on a tool button.
738 \value State_Children Used to indicate if an item view branch has children.
739 \value State_DownArrow Used to indicate if a down arrow should be visible on the widget.
740 \value State_Editing Used to indicate if an editor is opened on the widget.
741 \value State_Enabled Used to indicate if the widget is enabled.
742 \value State_HasEditFocus Used to indicate if the widget currently has edit focus.
743 \value State_HasFocus Used to indicate if the widget has focus.
744 \value State_Horizontal Used to indicate if the widget is laid out horizontally, for example. a tool bar.
745 \value State_KeyboardFocusChange Used to indicate if the focus was changed with the keyboard, e.g., tab, backtab or shortcut.
746 \value State_MouseOver Used to indicate if the widget is under the mouse.
747 \value State_NoChange Used to indicate a tri-state checkbox.
748 \value State_Off Used to indicate if the widget is not checked.
749 \value State_On Used to indicate if the widget is checked.
750 \value State_Raised Used to indicate if a button is raised.
751 \value State_ReadOnly Used to indicate if a widget is read-only.
752 \value State_Selected Used to indicate if a widget is selected.
753 \value State_Item Used by item views to indicate if a horizontal branch should be drawn.
754 \value State_Open Used by item views to indicate if the tree branch is open.
755 \value State_Sibling Used by item views to indicate if a vertical line needs to be drawn (for siblings).
756 \value State_Sunken Used to indicate if the widget is sunken or pressed.
757 \value State_UpArrow Used to indicate if an up arrow should be visible on the widget.
758 \value State_Mini Used to indicate a mini style Mac widget or button.
759 \value State_Small Used to indicate a small style Mac widget or button.
760 \omitvalue State_Window
761 \omitvalue State_Bottom
762 \omitvalue State_FocusAtBorder
763 \omitvalue State_Top
764
765 \sa drawPrimitive()
766*/
767
768/*!
769 \fn void QStyle::drawPrimitive(PrimitiveElement element, const QStyleOption *option, QPainter *painter, const QWidget *widget) const
770
771 Draws the given primitive \a element with the provided \a painter using the style
772 options specified by \a option.
773
774 The \a widget argument is optional and may contain a widget that may
775 aid in drawing the primitive element.
776
777 The table below is listing the primitive elements and their
778 associated style option subclasses. The style options contain all
779 the parameters required to draw the elements, including
780 QStyleOption::state which holds the style flags that are used when
781 drawing. The table also describes which flags that are set when
782 casting the given option to the appropriate subclass.
783
784 Note that if a primitive element is not listed here, it is because
785 it uses a plain QStyleOption object.
786
787 \table
788 \header \li Primitive Element \li QStyleOption Subclass \li Style Flag \li Remark
789 \row \li \l PE_FrameFocusRect \li \l QStyleOptionFocusRect
790 \li \l State_FocusAtBorder
791 \li Whether the focus is is at the border or inside the widget.
792 \row \li{1,2} \l PE_IndicatorCheckBox \li{1,2} \l QStyleOptionButton
793 \li \l State_NoChange \li Indicates a "tri-state" checkbox.
794 \row \li \l State_On \li Indicates the indicator is checked.
795 \row \li \l PE_IndicatorRadioButton \li \l QStyleOptionButton
796 \li \l State_On \li Indicates that a radio button is selected.
797 \row \li \l State_NoChange \li Indicates a "tri-state" controller.
798 \row \li \l State_Enabled \li Indicates the controller is enabled.
799 \row \li{1,4} \l PE_IndicatorBranch \li{1,4} \l QStyleOption
800 \li \l State_Children \li Indicates that the control for expanding the tree to show child items, should be drawn.
801 \row \li \l State_Item \li Indicates that a horizontal branch (to show a child item), should be drawn.
802 \row \li \l State_Open \li Indicates that the tree branch is expanded.
803 \row \li \l State_Sibling \li Indicates that a vertical line (to show a sibling item), should be drawn.
804 \row \li \l PE_IndicatorHeaderArrow \li \l QStyleOptionHeader
805 \li \l State_UpArrow \li Indicates that the arrow should be drawn up;
806 otherwise it should be down.
807 \row \li \l PE_FrameGroupBox, \l PE_Frame, \l PE_FrameLineEdit,
808 \l PE_FrameMenu, \l PE_FrameDockWidget, \l PE_FrameWindow
809 \li \l QStyleOptionFrame \li \l State_Sunken
810 \li Indicates that the Frame should be sunken.
811 \row \li \l PE_IndicatorToolBarHandle \li \l QStyleOption
812 \li \l State_Horizontal \li Indicates that the window handle is horizontal
813 instead of vertical.
814 \row \li \l PE_IndicatorSpinPlus, \l PE_IndicatorSpinMinus, \l PE_IndicatorSpinUp,
815 \l PE_IndicatorSpinDown,
816 \li \l QStyleOptionSpinBox
817 \li \l State_Sunken \li Indicates that the button is pressed.
818 \row \li{1,5} \l PE_PanelButtonCommand
819 \li{1,5} \l QStyleOptionButton
820 \li \l State_Enabled \li Set if the button is enabled.
821 \row \li \l State_HasFocus \li Set if the button has input focus.
822 \row \li \l State_Raised \li Set if the button is not down, not on and not flat.
823 \row \li \l State_On \li Set if the button is a toggle button and is toggled on.
824 \row \li \l State_Sunken
825 \li Set if the button is down (i.e., the mouse button or the
826 space bar is pressed on the button).
827 \endtable
828
829 \sa drawComplexControl(), drawControl()
830*/
831
832/*!
833 \enum QStyle::ControlElement
834
835 This enum represents a control element. A control element is a
836 part of a widget that performs some action or displays information
837 to the user.
838
839 \value CE_PushButton A QPushButton, draws CE_PushButtonBevel, CE_PushButtonLabel and PE_FrameFocusRect.
840 \value CE_PushButtonBevel The bevel and default indicator of a QPushButton.
841 \value CE_PushButtonLabel The label (an icon with text or pixmap) of a QPushButton.
842
843 \value CE_DockWidgetTitle Dock window title.
844 \value CE_Splitter Splitter handle; see also QSplitter.
845
846
847 \value CE_CheckBox A QCheckBox, draws a PE_IndicatorCheckBox, a CE_CheckBoxLabel and a PE_FrameFocusRect.
848 \value CE_CheckBoxLabel The label (text or pixmap) of a QCheckBox.
849
850 \value CE_RadioButton A QRadioButton, draws a PE_IndicatorRadioButton, a CE_RadioButtonLabel and a PE_FrameFocusRect.
851 \value CE_RadioButtonLabel The label (text or pixmap) of a QRadioButton.
852
853 \value CE_TabBarTab The tab and label within a QTabBar.
854 \value CE_TabBarTabShape The tab shape within a tab bar.
855 \value CE_TabBarTabLabel The label within a tab.
856
857 \value CE_ProgressBar A QProgressBar, draws CE_ProgressBarGroove, CE_ProgressBarContents and CE_ProgressBarLabel.
858 \value CE_ProgressBarGroove The groove where the progress
859 indicator is drawn in a QProgressBar.
860 \value CE_ProgressBarContents The progress indicator of a QProgressBar.
861 \value CE_ProgressBarLabel The text label of a QProgressBar.
862
863 \value CE_ToolButtonLabel A tool button's label.
864
865 \value CE_MenuBarItem A menu item in a QMenuBar.
866 \value CE_MenuBarEmptyArea The empty area of a QMenuBar.
867
868 \value CE_MenuItem A menu item in a QMenu.
869 \value CE_MenuScroller Scrolling areas in a QMenu when the
870 style supports scrolling.
871 \value CE_MenuTearoff A menu item representing the tear off section of
872 a QMenu.
873 \value CE_MenuEmptyArea The area in a menu without menu items.
874 \value CE_MenuHMargin The horizontal extra space on the left/right of a menu.
875 \value CE_MenuVMargin The vertical extra space on the top/bottom of a menu.
876
877 \value CE_ToolBoxTab The toolbox's tab and label within a QToolBox.
878 \value CE_SizeGrip Window resize handle; see also QSizeGrip.
879
880 \value CE_Header A header.
881 \value CE_HeaderSection A header section.
882 \value CE_HeaderLabel The header's label.
883
884 \value CE_ScrollBarAddLine Scroll bar line increase indicator.
885 (i.e., scroll down); see also QScrollBar.
886 \value CE_ScrollBarSubLine Scroll bar line decrease indicator (i.e., scroll up).
887 \value CE_ScrollBarAddPage Scolllbar page increase indicator (i.e., page down).
888 \value CE_ScrollBarSubPage Scroll bar page decrease indicator (i.e., page up).
889 \value CE_ScrollBarSlider Scroll bar slider.
890 \value CE_ScrollBarFirst Scroll bar first line indicator (i.e., home).
891 \value CE_ScrollBarLast Scroll bar last line indicator (i.e., end).
892
893 \value CE_RubberBand Rubber band used in for example an icon view.
894
895 \value CE_FocusFrame Focus frame that is style controlled.
896
897 \value CE_ItemViewItem An item inside an item view.
898
899 \value CE_CustomBase Base value for custom control elements;
900 custom values must be greater than this value.
901 \value CE_ComboBoxLabel The label of a non-editable QComboBox.
902 \value CE_ToolBar A toolbar like QToolBar.
903 \value CE_ToolBoxTabShape The toolbox's tab shape.
904 \value CE_ToolBoxTabLabel The toolbox's tab label.
905 \value CE_HeaderEmptyArea The area of a header view where there are no header sections.
906
907 \value CE_ShapedFrame The frame with the shape specified in the QStyleOptionFrame; see QFrame.
908
909 \omitvalue CE_ColumnViewGrip
910
911 \sa drawControl()
912*/
913
914/*!
915 \fn void QStyle::drawControl(ControlElement element, const QStyleOption *option, QPainter *painter, const QWidget *widget) const
916
917 Draws the given \a element with the provided \a painter with the
918 style options specified by \a option.
919
920 The \a widget argument is optional and can be used as aid in
921 drawing the control. The \a option parameter is a pointer to a
922 QStyleOption object that can be cast to the correct subclass
923 using the qstyleoption_cast() function.
924
925 The table below is listing the control elements and their
926 associated style option subclass. The style options contain all
927 the parameters required to draw the controls, including
928 QStyleOption::state which holds the style flags that are used when
929 drawing. The table also describes which flags that are set when
930 casting the given option to the appropriate subclass.
931
932 Note that if a control element is not listed here, it is because
933 it uses a plain QStyleOption object.
934
935 \table
936 \header \li Control Element \li QStyleOption Subclass \li Style Flag \li Remark
937 \row \li{1,5} \l CE_MenuItem, \l CE_MenuBarItem
938 \li{1,5} \l QStyleOptionMenuItem
939 \li \l State_Selected \li The menu item is currently selected item.
940 \row \li \l State_Enabled \li The item is enabled.
941 \row \li \l State_DownArrow \li Indicates that a scroll down arrow should be drawn.
942 \row \li \l State_UpArrow \li Indicates that a scroll up arrow should be drawn
943 \row \li \l State_HasFocus \li Set if the menu bar has input focus.
944
945 \row \li{1,5} \l CE_PushButton, \l CE_PushButtonBevel, \l CE_PushButtonLabel
946 \li{1,5} \l QStyleOptionButton
947 \li \l State_Enabled \li Set if the button is enabled.
948 \row \li \l State_HasFocus \li Set if the button has input focus.
949 \row \li \l State_Raised \li Set if the button is not down, not on and not flat.
950 \row \li \l State_On \li Set if the button is a toggle button and is toggled on.
951 \row \li \l State_Sunken
952 \li Set if the button is down (i.e., the mouse button or the
953 space bar is pressed on the button).
954
955 \row \li{1,6} \l CE_RadioButton, \l CE_RadioButtonLabel,
956 \l CE_CheckBox, \l CE_CheckBoxLabel
957 \li{1,6} \l QStyleOptionButton
958 \li \l State_Enabled \li Set if the button is enabled.
959 \row \li \l State_HasFocus \li Set if the button has input focus.
960 \row \li \l State_On \li Set if the button is checked.
961 \row \li \l State_Off \li Set if the button is not checked.
962 \row \li \l State_NoChange \li Set if the button is in the NoChange state.
963 \row \li \l State_Sunken
964 \li Set if the button is down (i.e., the mouse button or
965 the space bar is pressed on the button).
966
967 \row \li{1,2} \l CE_ProgressBarContents, \l CE_ProgressBarLabel,
968 \l CE_ProgressBarGroove
969 \li{1,2} \l QStyleOptionProgressBar
970 \li \l State_Enabled \li Set if the progress bar is enabled.
971 \row \li \l State_HasFocus \li Set if the progress bar has input focus.
972
973 \row \li \l CE_Header, \l CE_HeaderSection, \l CE_HeaderLabel \li \l QStyleOptionHeader \li \li
974
975 \row \li{1,3} \l CE_TabBarTab, CE_TabBarTabShape, CE_TabBarTabLabel
976 \li{1,3} \l QStyleOptionTab
977 \li \l State_Enabled \li Set if the tab bar is enabled.
978 \row \li \l State_Selected \li The tab bar is the currently selected tab bar.
979 \row \li \l State_HasFocus \li Set if the tab bar tab has input focus.
980
981 \row \li{1,7} \l CE_ToolButtonLabel
982 \li{1,7} \l QStyleOptionToolButton
983 \li \l State_Enabled \li Set if the tool button is enabled.
984 \row \li \l State_HasFocus \li Set if the tool button has input focus.
985 \row \li \l State_Sunken
986 \li Set if the tool button is down (i.e., a mouse button or
987 the space bar is pressed).
988 \row \li \l State_On \li Set if the tool button is a toggle button and is toggled on.
989 \row \li \l State_AutoRaise \li Set if the tool button has auto-raise enabled.
990 \row \li \l State_MouseOver \li Set if the mouse pointer is over the tool button.
991 \row \li \l State_Raised \li Set if the button is not down and is not on.
992
993 \row \li \l CE_ToolBoxTab \li \l QStyleOptionToolBox
994 \li \l State_Selected \li The tab is the currently selected tab.
995 \row \li{1,3} \l CE_HeaderSection \li{1,3} \l QStyleOptionHeader
996 \li \l State_Sunken \li Indicates that the section is pressed.
997 \row \li \l State_UpArrow \li Indicates that the sort indicator should be pointing up.
998 \row \li \l State_DownArrow \li Indicates that the sort indicator should be pointing down.
999 \endtable
1000
1001 \sa drawPrimitive(), drawComplexControl()
1002*/
1003
1004/*!
1005 \enum QStyle::SubElement
1006
1007 This enum represents a sub-area of a widget. Style implementations
1008 use these areas to draw the different parts of a widget.
1009
1010 \value SE_PushButtonContents Area containing the label (icon
1011 with text or pixmap).
1012 \value SE_PushButtonFocusRect Area for the focus rect (usually
1013 larger than the contents rect).
1014 \value SE_PushButtonLayoutItem Area that counts for the parent layout.
1015 \value SE_PushButtonBevel [since 5.15] Area used for the bevel of the button.
1016
1017 \value SE_CheckBoxIndicator Area for the state indicator (e.g., check mark).
1018 \value SE_CheckBoxContents Area for the label (text or pixmap).
1019 \value SE_CheckBoxFocusRect Area for the focus indicator.
1020 \value SE_CheckBoxClickRect Clickable area, defaults to SE_CheckBoxFocusRect.
1021 \value SE_CheckBoxLayoutItem Area that counts for the parent layout.
1022
1023 \value SE_DateTimeEditLayoutItem Area that counts for the parent layout.
1024
1025 \value SE_RadioButtonIndicator Area for the state indicator.
1026 \value SE_RadioButtonContents Area for the label.
1027 \value SE_RadioButtonFocusRect Area for the focus indicator.
1028 \value SE_RadioButtonClickRect Clickable area, defaults to SE_RadioButtonFocusRect.
1029 \value SE_RadioButtonLayoutItem Area that counts for the parent layout.
1030
1031 \value SE_ComboBoxFocusRect Area for the focus indicator.
1032
1033 \value SE_SliderFocusRect Area for the focus indicator.
1034 \value SE_SliderLayoutItem Area that counts for the parent layout.
1035
1036 \value SE_SpinBoxLayoutItem Area that counts for the parent layout.
1037
1038 \value SE_ProgressBarGroove Area for the groove.
1039 \value SE_ProgressBarContents Area for the progress indicator.
1040 \value SE_ProgressBarLabel Area for the text label.
1041 \value SE_ProgressBarLayoutItem Area that counts for the parent layout.
1042
1043 \omitvalue SE_ViewItemCheckIndicator
1044
1045 \value SE_FrameContents Area for a frame's contents.
1046 \value SE_ShapedFrameContents Area for a frame's contents using the shape in QStyleOptionFrame; see QFrame
1047 \value SE_FrameLayoutItem Area that counts for the parent layout.
1048
1049 \value SE_HeaderArrow Area for the sort indicator for a header.
1050 \value SE_HeaderLabel Area for the label in a header.
1051
1052 \value SE_LabelLayoutItem Area that counts for the parent layout.
1053
1054 \value SE_LineEditContents Area for a line edit's contents.
1055
1056 \value SE_TabWidgetLeftCorner Area for the left corner widget in a tab widget.
1057 \value SE_TabWidgetRightCorner Area for the right corner widget in a tab widget.
1058 \value SE_TabWidgetTabBar Area for the tab bar widget in a tab widget.
1059 \value SE_TabWidgetTabContents Area for the contents of the tab widget.
1060 \value SE_TabWidgetTabPane Area for the pane of a tab widget.
1061 \value SE_TabWidgetLayoutItem Area that counts for the parent layout.
1062
1063 \value SE_ToolBoxTabContents Area for a toolbox tab's icon and label.
1064
1065 \value SE_ToolButtonLayoutItem Area that counts for the parent layout.
1066
1067 \value SE_ItemViewItemCheckIndicator Area for a view item's check mark.
1068
1069 \value SE_TabBarTearIndicator Deprecated. Use SE_TabBarTearIndicatorLeft instead.
1070 \value SE_TabBarTearIndicatorLeft Area for the tear indicator on the left side of a tab bar with scroll arrows.
1071 \value SE_TabBarTearIndicatorRight Area for the tear indicator on the right side of a tab bar with scroll arrows.
1072
1073 \value SE_TabBarScrollLeftButton Area for the scroll left button on a tab bar with scroll buttons.
1074 \value SE_TabBarScrollRightButton Area for the scroll right button on a tab bar with scroll buttons.
1075
1076 \value SE_TreeViewDisclosureItem Area for the actual disclosure item in a tree branch.
1077
1078 \omitvalue SE_DialogButtonBoxLayoutItem
1079
1080 \value SE_GroupBoxLayoutItem Area that counts for the parent layout.
1081
1082 \value SE_CustomBase Base value for custom sub-elements.
1083 Custom values must be greater than this value.
1084
1085 \value SE_DockWidgetFloatButton The float button of a dock
1086 widget.
1087 \value SE_DockWidgetTitleBarText The text bounds of the dock
1088 widgets title.
1089 \value SE_DockWidgetCloseButton The close button of a dock
1090 widget.
1091 \value SE_DockWidgetIcon The icon of a dock widget.
1092 \value SE_ComboBoxLayoutItem Area that counts for the parent layout.
1093
1094
1095 \value SE_ItemViewItemDecoration Area for a view item's decoration (icon).
1096 \value SE_ItemViewItemText Area for a view item's text.
1097 \value SE_ItemViewItemFocusRect Area for a view item's focus rect.
1098
1099 \value SE_TabBarTabLeftButton Area for a widget on the left side of a tab in a tab bar.
1100 \value SE_TabBarTabRightButton Area for a widget on the right side of a tab in a tab bar.
1101 \value SE_TabBarTabText Area for the text on a tab in a tab bar.
1102
1103 \value SE_ToolBarHandle Area for the handle of a tool bar.
1104
1105 \sa subElementRect()
1106*/
1107
1108/*!
1109 \fn QRect QStyle::subElementRect(SubElement element, const QStyleOption *option, const QWidget *widget) const
1110
1111 Returns the sub-area for the given \a element as described in the
1112 provided style \a option. The returned rectangle is defined in
1113 screen coordinates.
1114
1115 The \a widget argument is optional and can be used to aid
1116 determining the area. The QStyleOption object can be cast to the
1117 appropriate type using the qstyleoption_cast() function. See the
1118 table below for the appropriate \a option casts:
1119
1120 \table
1121 \header \li Sub Element \li QStyleOption Subclass
1122 \row \li \l SE_PushButtonContents \li \l QStyleOptionButton
1123 \row \li \l SE_PushButtonFocusRect \li \l QStyleOptionButton
1124 \row \li \l SE_PushButtonBevel \li \l QStyleOptionButton
1125 \row \li \l SE_CheckBoxIndicator \li \l QStyleOptionButton
1126 \row \li \l SE_CheckBoxContents \li \l QStyleOptionButton
1127 \row \li \l SE_CheckBoxFocusRect \li \l QStyleOptionButton
1128 \row \li \l SE_RadioButtonIndicator \li \l QStyleOptionButton
1129 \row \li \l SE_RadioButtonContents \li \l QStyleOptionButton
1130 \row \li \l SE_RadioButtonFocusRect \li \l QStyleOptionButton
1131 \row \li \l SE_ComboBoxFocusRect \li \l QStyleOptionComboBox
1132 \row \li \l SE_ProgressBarGroove \li \l QStyleOptionProgressBar
1133 \row \li \l SE_ProgressBarContents \li \l QStyleOptionProgressBar
1134 \row \li \l SE_ProgressBarLabel \li \l QStyleOptionProgressBar
1135 \endtable
1136*/
1137
1138/*!
1139 \enum QStyle::ComplexControl
1140
1141 This enum describes the available complex controls. Complex
1142 controls have different behavior depending upon where the user
1143 clicks on them or which keys are pressed.
1144
1145 \value CC_SpinBox A spinbox, like QSpinBox.
1146 \value CC_ComboBox A combobox, like QComboBox.
1147 \value CC_ScrollBar A scroll bar, like QScrollBar.
1148 \value CC_Slider A slider, like QSlider.
1149 \value CC_ToolButton A tool button, like QToolButton.
1150 \value CC_TitleBar A Title bar, like those used in QMdiSubWindow.
1151 \value CC_GroupBox A group box, like QGroupBox.
1152 \value CC_Dial A dial, like QDial.
1153 \value CC_MdiControls The minimize, close, and normal
1154 button in the menu bar for a
1155 maximized MDI subwindow.
1156
1157 \value CC_CustomBase Base value for custom complex controls. Custom
1158 values must be greater than this value.
1159
1160 \sa SubControl, drawComplexControl()
1161*/
1162
1163/*!
1164 \enum QStyle::SubControl
1165
1166 This enum describes the available sub controls. A subcontrol is a
1167 control element within a complex control (ComplexControl).
1168
1169 \value SC_None Special value that matches no other sub control.
1170
1171 \value SC_ScrollBarAddLine Scroll bar add line (i.e., down/right
1172 arrow); see also QScrollBar.
1173 \value SC_ScrollBarSubLine Scroll bar sub line (i.e., up/left arrow).
1174 \value SC_ScrollBarAddPage Scroll bar add page (i.e., page down).
1175 \value SC_ScrollBarSubPage Scroll bar sub page (i.e., page up).
1176 \value SC_ScrollBarFirst Scroll bar first line (i.e., home).
1177 \value SC_ScrollBarLast Scroll bar last line (i.e., end).
1178 \value SC_ScrollBarSlider Scroll bar slider handle.
1179 \value SC_ScrollBarGroove Special sub-control which contains the
1180 area in which the slider handle may move.
1181
1182 \value SC_SpinBoxUp Spin widget up/increase; see also QSpinBox.
1183 \value SC_SpinBoxDown Spin widget down/decrease.
1184 \value SC_SpinBoxFrame Spin widget frame.
1185 \value SC_SpinBoxEditField Spin widget edit field.
1186
1187 \value SC_ComboBoxEditField Combobox edit field; see also QComboBox.
1188 \value SC_ComboBoxArrow Combobox arrow button.
1189 \value SC_ComboBoxFrame Combobox frame.
1190 \value SC_ComboBoxListBoxPopup The reference rectangle for the combobox popup.
1191 Used to calculate the position of the popup.
1192
1193 \value SC_SliderGroove Special sub-control which contains the area
1194 in which the slider handle may move.
1195 \value SC_SliderHandle Slider handle.
1196 \value SC_SliderTickmarks Slider tickmarks.
1197
1198 \value SC_ToolButton Tool button (see also QToolButton).
1199 \value SC_ToolButtonMenu Sub-control for opening a popup menu in a
1200 tool button.
1201
1202 \value SC_TitleBarSysMenu System menu button (i.e., restore, close, etc.).
1203 \value SC_TitleBarMinButton Minimize button.
1204 \value SC_TitleBarMaxButton Maximize button.
1205 \value SC_TitleBarCloseButton Close button.
1206 \value SC_TitleBarLabel Window title label.
1207 \value SC_TitleBarNormalButton Normal (restore) button.
1208 \value SC_TitleBarShadeButton Shade button.
1209 \value SC_TitleBarUnshadeButton Unshade button.
1210 \value SC_TitleBarContextHelpButton Context Help button.
1211
1212 \value SC_DialHandle The handle of the dial (i.e. what you use to control the dial).
1213 \value SC_DialGroove The groove for the dial.
1214 \value SC_DialTickmarks The tickmarks for the dial.
1215
1216 \value SC_GroupBoxFrame The frame of a group box.
1217 \value SC_GroupBoxLabel The title of a group box.
1218 \value SC_GroupBoxCheckBox The optional check box of a group box.
1219 \value SC_GroupBoxContents The group box contents.
1220
1221 \value SC_MdiNormalButton The normal button for a MDI
1222 subwindow in the menu bar.
1223 \value SC_MdiMinButton The minimize button for a MDI
1224 subwindow in the menu bar.
1225 \value SC_MdiCloseButton The close button for a MDI subwindow
1226 in the menu bar.
1227
1228 \value SC_All Special value that matches all sub-controls.
1229 \omitvalue SC_CustomBase
1230
1231 \sa ComplexControl
1232*/
1233
1234/*!
1235 \fn void QStyle::drawComplexControl(ComplexControl control, const QStyleOptionComplex *option, QPainter *painter, const QWidget *widget) const
1236
1237 Draws the given \a control using the provided \a painter with the
1238 style options specified by \a option.
1239
1240 The \a widget argument is optional and can be used as aid in
1241 drawing the control.
1242
1243 The \a option parameter is a pointer to a QStyleOptionComplex
1244 object that can be cast to the correct subclass using the
1245 qstyleoption_cast() function. Note that the \c rect member of the
1246 specified \a option must be in logical
1247 coordinates. Reimplementations of this function should use
1248 visualRect() to change the logical coordinates into screen
1249 coordinates before calling the drawPrimitive() or drawControl()
1250 function.
1251
1252 The table below is listing the complex control elements and their
1253 associated style option subclass. The style options contain all
1254 the parameters required to draw the controls, including
1255 QStyleOption::state which holds the \l {QStyle::StateFlag}{style
1256 flags} that are used when drawing. The table also describes which
1257 flags that are set when casting the given \a option to the
1258 appropriate subclass.
1259
1260 \table
1261 \header \li Complex Control \li QStyleOptionComplex Subclass \li Style Flag \li Remark
1262 \row \li{1,2} \l{CC_SpinBox} \li{1,2} \l QStyleOptionSpinBox
1263 \li \l State_Enabled \li Set if the spin box is enabled.
1264 \row \li \l State_HasFocus \li Set if the spin box has input focus.
1265
1266 \row \li{1,2} \l {CC_ComboBox} \li{1,2} \l QStyleOptionComboBox
1267 \li \l State_Enabled \li Set if the combobox is enabled.
1268 \row \li \l State_HasFocus \li Set if the combobox has input focus.
1269
1270 \row \li{1,2} \l {CC_ScrollBar} \li{1,2} \l QStyleOptionSlider
1271 \li \l State_Enabled \li Set if the scroll bar is enabled.
1272 \row \li \l State_HasFocus \li Set if the scroll bar has input focus.
1273
1274 \row \li{1,2} \l {CC_Slider} \li{1,2} \l QStyleOptionSlider
1275 \li \l State_Enabled \li Set if the slider is enabled.
1276 \row \li \l State_HasFocus \li Set if the slider has input focus.
1277
1278 \row \li{1,2} \l {CC_Dial} \li{1,2} \l QStyleOptionSlider
1279 \li \l State_Enabled \li Set if the dial is enabled.
1280 \row \li \l State_HasFocus \li Set if the dial has input focus.
1281
1282 \row \li{1,6} \l {CC_ToolButton} \li{1,6} \l QStyleOptionToolButton
1283 \li \l State_Enabled \li Set if the tool button is enabled.
1284 \row \li \l State_HasFocus \li Set if the tool button has input focus.
1285 \row \li \l State_DownArrow \li Set if the tool button is down (i.e., a mouse
1286 button or the space bar is pressed).
1287 \row \li \l State_On \li Set if the tool button is a toggle button
1288 and is toggled on.
1289 \row \li \l State_AutoRaise \li Set if the tool button has auto-raise enabled.
1290 \row \li \l State_Raised \li Set if the button is not down, not on, and doesn't
1291 contain the mouse when auto-raise is enabled.
1292
1293 \row \li \l{CC_TitleBar} \li \l QStyleOptionTitleBar
1294 \li \l State_Enabled \li Set if the title bar is enabled.
1295
1296 \endtable
1297
1298 \sa drawPrimitive(), drawControl()
1299*/
1300
1301
1302/*!
1303 \fn QRect QStyle::subControlRect(ComplexControl control,
1304 const QStyleOptionComplex *option, SubControl subControl,
1305 const QWidget *widget) const = 0
1306
1307 Returns the rectangle containing the specified \a subControl of
1308 the given complex \a control (with the style specified by \a
1309 option). The rectangle is defined in screen coordinates.
1310
1311 The \a option argument is a pointer to QStyleOptionComplex or
1312 one of its subclasses, and can be cast to the appropriate type
1313 using the qstyleoption_cast() function. See drawComplexControl()
1314 for details. The \a widget is optional and can contain additional
1315 information for the function.
1316
1317 \sa drawComplexControl()
1318*/
1319
1320/*!
1321 \fn QStyle::SubControl QStyle::hitTestComplexControl(ComplexControl control,
1322 const QStyleOptionComplex *option, const QPoint &position,
1323 const QWidget *widget) const = 0
1324
1325 Returns the sub control at the given \a position in the given
1326 complex \a control (with the style options specified by \a
1327 option).
1328
1329 Note that the \a position is expressed in screen coordinates.
1330
1331 The \a option argument is a pointer to a QStyleOptionComplex
1332 object (or one of its subclasses). The object can be cast to the
1333 appropriate type using the qstyleoption_cast() function. See
1334 drawComplexControl() for details. The \a widget argument is
1335 optional and can contain additional information for the function.
1336
1337 \sa drawComplexControl(), subControlRect()
1338*/
1339
1340/*!
1341 \enum QStyle::PixelMetric
1342
1343 This enum describes the various available pixel metrics. A pixel
1344 metric is a style dependent size represented by a single pixel
1345 value.
1346
1347 \value PM_ButtonMargin Amount of whitespace between push button
1348 labels and the frame.
1349 \value PM_DockWidgetTitleBarButtonMargin Amount of whitespace between dock widget's
1350 title bar button labels and the frame.
1351 \value PM_ButtonDefaultIndicator Width of the default-button indicator frame.
1352 \value PM_MenuButtonIndicator Width of the menu button indicator
1353 proportional to the widget height.
1354 \value PM_ButtonShiftHorizontal Horizontal contents shift of a
1355 button when the button is down.
1356 \value PM_ButtonShiftVertical Vertical contents shift of a button when the
1357 button is down.
1358
1359 \value PM_DefaultFrameWidth Default frame width (usually 2).
1360 \value PM_SpinBoxFrameWidth Frame width of a spin box, defaults to PM_DefaultFrameWidth.
1361 \value PM_ComboBoxFrameWidth Frame width of a combo box, defaults to PM_DefaultFrameWidth.
1362
1363 \value PM_MDIFrameWidth Obsolete. Use PM_MdiSubWindowFrameWidth instead.
1364 \value PM_MdiSubWindowFrameWidth Frame width of an MDI window.
1365 \value PM_MDIMinimizedWidth Obsolete. Use PM_MdiSubWindowMinimizedWidth instead.
1366 \value PM_MdiSubWindowMinimizedWidth Width of a minimized MDI window.
1367
1368 \value PM_LayoutLeftMargin Default \l{QLayout::setContentsMargins()}{left margin} for a
1369 QLayout.
1370 \value PM_LayoutTopMargin Default \l{QLayout::setContentsMargins()}{top margin} for a QLayout.
1371 \value PM_LayoutRightMargin Default \l{QLayout::setContentsMargins()}{right margin} for a
1372 QLayout.
1373 \value PM_LayoutBottomMargin Default \l{QLayout::setContentsMargins()}{bottom margin} for a
1374 QLayout.
1375 \value PM_LayoutHorizontalSpacing Default \l{QLayout::spacing}{horizontal spacing} for a
1376 QLayout.
1377 \value PM_LayoutVerticalSpacing Default \l{QLayout::spacing}{vertical spacing} for a QLayout.
1378
1379 \value PM_MaximumDragDistance The maximum allowed distance between
1380 the mouse and a scrollbar when dragging. Exceeding the specified
1381 distance will cause the slider to jump back to the original
1382 position; a value of -1 disables this behavior.
1383
1384 \value PM_ScrollBarExtent Width of a vertical scroll bar and the
1385 height of a horizontal scroll bar.
1386 \value PM_ScrollBarSliderMin The minimum height of a vertical
1387 scroll bar's slider and the minimum width of a horizontal
1388 scroll bar's slider.
1389
1390 \value PM_SliderThickness Total slider thickness.
1391 \value PM_SliderControlThickness Thickness of the slider handle.
1392 \value PM_SliderLength Length of the slider.
1393 \value PM_SliderTickmarkOffset The offset between the tickmarks
1394 and the slider.
1395 \value PM_SliderSpaceAvailable The available space for the slider to move.
1396
1397 \value PM_DockWidgetSeparatorExtent Width of a separator in a
1398 horizontal dock window and the height of a separator in a
1399 vertical dock window.
1400 \value PM_DockWidgetHandleExtent Width of the handle in a
1401 horizontal dock window and the height of the handle in a
1402 vertical dock window.
1403 \value PM_DockWidgetFrameWidth Frame width of a dock window.
1404 \value PM_DockWidgetTitleMargin Margin of the dock window title.
1405
1406 \value PM_MenuBarPanelWidth Frame width of a menu bar, defaults to PM_DefaultFrameWidth.
1407 \value PM_MenuBarItemSpacing Spacing between menu bar items.
1408 \value PM_MenuBarHMargin Spacing between menu bar items and left/right of bar.
1409 \value PM_MenuBarVMargin Spacing between menu bar items and top/bottom of bar.
1410
1411 \value PM_ToolBarFrameWidth Width of the frame around toolbars.
1412 \value PM_ToolBarHandleExtent Width of a toolbar handle in a
1413 horizontal toolbar and the height of the handle in a vertical toolbar.
1414 \value PM_ToolBarItemMargin Spacing between the toolbar frame and the items.
1415 \value PM_ToolBarItemSpacing Spacing between toolbar items.
1416 \value PM_ToolBarSeparatorExtent Width of a toolbar separator in a
1417 horizontal toolbar and the height of a separator in a vertical toolbar.
1418 \value PM_ToolBarExtensionExtent Width of a toolbar extension
1419 button in a horizontal toolbar and the height of the button in a
1420 vertical toolbar.
1421
1422 \value PM_TabBarTabOverlap Number of pixels the tabs should overlap.
1423 (Currently only used in styles, not inside of QTabBar)
1424 \value PM_TabBarTabHSpace Extra space added to the tab width.
1425 \value PM_TabBarTabVSpace Extra space added to the tab height.
1426 \value PM_TabBarBaseHeight Height of the area between the tab bar
1427 and the tab pages.
1428 \value PM_TabBarBaseOverlap Number of pixels the tab bar overlaps
1429 the tab bar base.
1430 \value PM_TabBarScrollButtonWidth
1431 \value PM_TabBarTabShiftHorizontal Horizontal pixel shift when a
1432 tab is selected.
1433 \value PM_TabBarTabShiftVertical Vertical pixel shift when a
1434 tab is selected.
1435
1436 \value PM_ProgressBarChunkWidth Width of a chunk in a progress bar indicator.
1437
1438 \value PM_SplitterWidth Width of a splitter.
1439
1440 \value PM_TitleBarHeight Height of the title bar.
1441
1442 \value PM_IndicatorWidth Width of a check box indicator.
1443 \value PM_IndicatorHeight Height of a checkbox indicator.
1444 \value PM_ExclusiveIndicatorWidth Width of a radio button indicator.
1445 \value PM_ExclusiveIndicatorHeight Height of a radio button indicator.
1446
1447 \value PM_MenuPanelWidth Border width (applied on all sides) for a QMenu.
1448 \value PM_MenuHMargin Additional border (used on left and right) for a QMenu.
1449 \value PM_MenuVMargin Additional border (used for bottom and top) for a QMenu.
1450 \value PM_MenuScrollerHeight Height of the scroller area in a QMenu.
1451 \value PM_MenuTearoffHeight Height of a tear off area in a QMenu.
1452 \value PM_MenuDesktopFrameWidth The frame width for the menu on the desktop.
1453
1454 \omitvalue PM_DialogButtonsSeparator
1455 \omitvalue PM_DialogButtonsButtonWidth
1456 \omitvalue PM_DialogButtonsButtonHeight
1457
1458 \value PM_HeaderMarkSize The size of the sort indicator in a header.
1459 \value PM_HeaderGripMargin The size of the resize grip in a header.
1460 \value PM_HeaderMargin The size of the margin between the sort indicator and the text.
1461 \value PM_SpinBoxSliderHeight The height of the optional spin box slider.
1462
1463 \value PM_ToolBarIconSize Default tool bar icon size
1464 \value PM_SmallIconSize Default small icon size
1465 \value PM_LargeIconSize Default large icon size
1466
1467 \value PM_FocusFrameHMargin Horizontal margin that the focus frame will outset the widget by.
1468 \value PM_FocusFrameVMargin Vertical margin that the focus frame will outset the widget by.
1469 \value PM_IconViewIconSize The default size for icons in an icon view.
1470 \value PM_ListViewIconSize The default size for icons in a list view.
1471
1472 \value PM_ToolTipLabelFrameWidth The frame width for a tool tip label.
1473 \value PM_CheckBoxLabelSpacing The spacing between a check box indicator and its label.
1474 \value PM_RadioButtonLabelSpacing The spacing between a radio button indicator and its label.
1475 \value PM_TabBarIconSize The default icon size for a tab bar.
1476 \value PM_SizeGripSize The size of a size grip.
1477 \value PM_MessageBoxIconSize The size of the standard icons in a message box
1478 \value PM_ButtonIconSize The default size of button icons
1479 \value PM_TextCursorWidth The width of the cursor in a line edit or text edit
1480 \value PM_TabBar_ScrollButtonOverlap The distance between the left and right buttons in a tab bar.
1481
1482 \value PM_TabCloseIndicatorWidth The default width of a close button on a tab in a tab bar.
1483 \value PM_TabCloseIndicatorHeight The default height of a close button on a tab in a tab bar.
1484
1485 \value PM_ScrollView_ScrollBarSpacing Distance between frame and scrollbar
1486 with SH_ScrollView_FrameOnlyAroundContents set.
1487 \value PM_ScrollView_ScrollBarOverlap Overlap between scroll bars and scroll content
1488
1489 \value PM_SubMenuOverlap The horizontal overlap between a submenu and its parent.
1490
1491 \value PM_TreeViewIndentation The indentation of items in a tree view.
1492 This enum value has been introduced in Qt 5.4.
1493
1494 \value PM_HeaderDefaultSectionSizeHorizontal The default size of sections
1495 in a horizontal header. This enum value has been introduced in Qt 5.5.
1496 \value PM_HeaderDefaultSectionSizeVertical The default size of sections
1497 in a vertical header. This enum value has been introduced in Qt 5.5.
1498
1499 \value PM_TitleBarButtonIconSize The size of button icons on a title bar.
1500 This enum value has been introduced in Qt 5.8.
1501 \value PM_TitleBarButtonSize The size of buttons on a title bar.
1502 This enum value has been introduced in Qt 5.8.
1503
1504 \value PM_CustomBase Base value for custom pixel metrics. Custom
1505 values must be greater than this value.
1506
1507 The following values are obsolete:
1508
1509 \value PM_DefaultTopLevelMargin Use PM_LayoutLeftMargin,
1510 PM_LayoutTopMargin,
1511 PM_LayoutRightMargin, and
1512 PM_LayoutBottomMargin instead.
1513 \value PM_DefaultChildMargin Use PM_LayoutLeftMargin,
1514 PM_LayoutTopMargin,
1515 PM_LayoutRightMargin, and
1516 PM_LayoutBottomMargin instead.
1517 \value PM_DefaultLayoutSpacing Use PM_LayoutHorizontalSpacing
1518 and PM_LayoutVerticalSpacing
1519 instead.
1520
1521
1522 \sa pixelMetric()
1523*/
1524
1525/*!
1526 \fn int QStyle::pixelMetric(PixelMetric metric, const QStyleOption *option, const QWidget *widget) const;
1527
1528 Returns the value of the given pixel \a metric.
1529
1530 The specified \a option and \a widget can be used for calculating
1531 the metric. In general, the \a widget argument is not used. The \a
1532 option can be cast to the appropriate type using the
1533 qstyleoption_cast() function. Note that the \a option may be zero
1534 even for PixelMetrics that can make use of it. See the table below
1535 for the appropriate \a option casts:
1536
1537 \table
1538 \header \li Pixel Metric \li QStyleOption Subclass
1539 \row \li \l PM_SliderControlThickness \li \l QStyleOptionSlider
1540 \row \li \l PM_SliderLength \li \l QStyleOptionSlider
1541 \row \li \l PM_SliderTickmarkOffset \li \l QStyleOptionSlider
1542 \row \li \l PM_SliderSpaceAvailable \li \l QStyleOptionSlider
1543 \row \li \l PM_ScrollBarExtent \li \l QStyleOptionSlider
1544 \row \li \l PM_TabBarTabOverlap \li \l QStyleOptionTab
1545 \row \li \l PM_TabBarTabHSpace \li \l QStyleOptionTab
1546 \row \li \l PM_TabBarTabVSpace \li \l QStyleOptionTab
1547 \row \li \l PM_TabBarBaseHeight \li \l QStyleOptionTab
1548 \row \li \l PM_TabBarBaseOverlap \li \l QStyleOptionTab
1549 \endtable
1550
1551 Some pixel metrics are called from widgets and some are only called
1552 internally by the style. If the metric is not called by a widget, it is the
1553 discretion of the style author to make use of it. For some styles, this
1554 may not be appropriate.
1555*/
1556
1557/*!
1558 \enum QStyle::ContentsType
1559
1560 This enum describes the available contents types. These are used to
1561 calculate sizes for the contents of various widgets.
1562
1563 \value CT_CheckBox A check box, like QCheckBox.
1564 \value CT_ComboBox A combo box, like QComboBox.
1565 \omitvalue CT_DialogButtons
1566 \value CT_HeaderSection A header section, like QHeader.
1567 \value CT_LineEdit A line edit, like QLineEdit.
1568 \value CT_Menu A menu, like QMenu.
1569 \value CT_MenuBar A menu bar, like QMenuBar.
1570 \value CT_MenuBarItem A menu bar item, like the buttons in a QMenuBar.
1571 \value CT_MenuItem A menu item, like QMenuItem.
1572 \value CT_ProgressBar A progress bar, like QProgressBar.
1573 \value CT_PushButton A push button, like QPushButton.
1574 \value CT_RadioButton A radio button, like QRadioButton.
1575 \value CT_SizeGrip A size grip, like QSizeGrip.
1576 \value CT_Slider A slider, like QSlider.
1577 \value CT_ScrollBar A scroll bar, like QScrollBar.
1578 \value CT_SpinBox A spin box, like QSpinBox.
1579 \value CT_Splitter A splitter, like QSplitter.
1580 \value CT_TabBarTab A tab on a tab bar, like QTabBar.
1581 \value CT_TabWidget A tab widget, like QTabWidget.
1582 \value CT_ToolButton A tool button, like QToolButton.
1583 \value CT_GroupBox A group box, like QGroupBox.
1584 \value CT_ItemViewItem An item inside an item view.
1585
1586 \value CT_CustomBase Base value for custom contents types.
1587 Custom values must be greater than this value.
1588
1589 \value CT_MdiControls The minimize, normal, and close button
1590 in the menu bar for a maximized MDI
1591 subwindow.
1592
1593 \sa sizeFromContents()
1594*/
1595
1596/*!
1597 \fn QSize QStyle::sizeFromContents(ContentsType type, const QStyleOption *option, const QSize &contentsSize, const QWidget *widget) const
1598
1599 Returns the size of the element described by the specified
1600 \a option and \a type, based on the provided \a contentsSize.
1601
1602 The \a option argument is a pointer to a QStyleOption or one of
1603 its subclasses. The \a option can be cast to the appropriate type
1604 using the qstyleoption_cast() function. The \a widget is an
1605 optional argument and can contain extra information used for
1606 calculating the size.
1607
1608 See the table below for the appropriate \a option casts:
1609
1610 \table
1611 \header \li Contents Type \li QStyleOption Subclass
1612 \row \li \l CT_CheckBox \li \l QStyleOptionButton
1613 \row \li \l CT_ComboBox \li \l QStyleOptionComboBox
1614 \row \li \l CT_GroupBox \li \l QStyleOptionGroupBox
1615 \row \li \l CT_HeaderSection \li \l QStyleOptionHeader
1616 \row \li \l CT_ItemViewItem \li \l QStyleOptionViewItem
1617 \row \li \l CT_LineEdit \li \l QStyleOptionFrame
1618 \row \li \l CT_MdiControls \li \l QStyleOptionComplex
1619 \row \li \l CT_Menu \li \l QStyleOption
1620 \row \li \l CT_MenuItem \li \l QStyleOptionMenuItem
1621 \row \li \l CT_MenuBar \li \l QStyleOptionMenuItem
1622 \row \li \l CT_MenuBarItem \li \l QStyleOptionMenuItem
1623 \row \li \l CT_ProgressBar \li \l QStyleOptionProgressBar
1624 \row \li \l CT_PushButton \li \l QStyleOptionButton
1625 \row \li \l CT_RadioButton \li \l QStyleOptionButton
1626 \row \li \l CT_ScrollBar \li \l QStyleOptionSlider
1627 \row \li \l CT_SizeGrip \li \l QStyleOption
1628 \row \li \l CT_Slider \li \l QStyleOptionSlider
1629 \row \li \l CT_SpinBox \li \l QStyleOptionSpinBox
1630 \row \li \l CT_Splitter \li \l QStyleOption
1631 \row \li \l CT_TabBarTab \li \l QStyleOptionTab
1632 \row \li \l CT_TabWidget \li \l QStyleOptionTabWidgetFrame
1633 \row \li \l CT_ToolButton \li \l QStyleOptionToolButton
1634 \endtable
1635
1636 \sa ContentsType, QStyleOption
1637*/
1638
1639/*!
1640 \enum QStyle::RequestSoftwareInputPanel
1641
1642 This enum describes under what circumstances a software input panel will be
1643 requested by input capable widgets.
1644
1645 \value RSIP_OnMouseClickAndAlreadyFocused Requests an input panel if the user
1646 clicks on the widget, but only if it is already focused.
1647 \value RSIP_OnMouseClick Requests an input panel if the user clicks on the
1648 widget.
1649
1650 \sa QInputMethod
1651*/
1652
1653/*!
1654 \enum QStyle::StyleHint
1655
1656 This enum describes the available style hints. A style hint is a general look
1657 and/or feel hint.
1658
1659 \value SH_EtchDisabledText Disabled text is "etched" as it is on Windows.
1660
1661 \value SH_DitherDisabledText Disabled text is dithered as it is on Motif.
1662
1663 \value SH_ScrollBar_ContextMenu Whether or not a scroll bar has a context menu.
1664
1665 \value SH_ScrollBar_MiddleClickAbsolutePosition A boolean value.
1666 If true, middle clicking on a scroll bar causes the slider to
1667 jump to that position. If false, middle clicking is
1668 ignored.
1669
1670 \value SH_ScrollBar_LeftClickAbsolutePosition A boolean value.
1671 If true, left clicking on a scroll bar causes the slider to
1672 jump to that position. If false, left clicking will
1673 behave as appropriate for each control.
1674
1675 \value SH_ScrollBar_ScrollWhenPointerLeavesControl A boolean
1676 value. If true, when clicking a scroll bar SubControl, holding
1677 the mouse button down and moving the pointer outside the
1678 SubControl, the scroll bar continues to scroll. If false, the
1679 scollbar stops scrolling when the pointer leaves the
1680 SubControl.
1681
1682 \value SH_ScrollBar_RollBetweenButtons A boolean value.
1683 If true, when clicking a scroll bar button (SC_ScrollBarAddLine or
1684 SC_ScrollBarSubLine) and dragging over to the opposite button (rolling)
1685 will press the new button and release the old one. When it is false, the
1686 original button is released and nothing happens (like a push button).
1687
1688 \value SH_TabBar_Alignment The alignment for tabs in a
1689 QTabWidget. Possible values are Qt::AlignLeft,
1690 Qt::AlignCenter and Qt::AlignRight.
1691
1692 \value SH_Header_ArrowAlignment The placement of the sorting
1693 indicator may appear in list or table headers. Possible values
1694 are Qt::Alignment values (that is, an OR combination of
1695 Qt::AlignmentFlag flags).
1696
1697 \value SH_Slider_SnapToValue Sliders snap to values while moving,
1698 as they do on Windows.
1699
1700 \value SH_Slider_SloppyKeyEvents Key presses handled in a sloppy
1701 manner, i.e., left on a vertical slider subtracts a line.
1702
1703 \value SH_ProgressDialog_CenterCancelButton Center button on
1704 progress dialogs, otherwise right aligned.
1705
1706 \value SH_ProgressDialog_TextLabelAlignment The alignment for text
1707 labels in progress dialogs; Qt::AlignCenter on Windows,
1708 Qt::AlignVCenter otherwise.
1709
1710 \value SH_PrintDialog_RightAlignButtons Right align buttons in
1711 the print dialog, as done on Windows.
1712
1713 \value SH_MainWindow_SpaceBelowMenuBar One or two pixel space between
1714 the menu bar and the dockarea, as done on Windows.
1715
1716 \value SH_FontDialog_SelectAssociatedText Select the text in the
1717 line edit, or when selecting an item from the listbox, or when
1718 the line edit receives focus, as done on Windows.
1719
1720 \value SH_Menu_KeyboardSearch Typing causes a menu to be search
1721 for relevant items, otherwise only mnemnonic is considered.
1722
1723 \value SH_Menu_AllowActiveAndDisabled Allows disabled menu
1724 items to be active.
1725
1726 \value SH_Menu_SpaceActivatesItem Pressing the space bar activates
1727 the item, as done on Motif.
1728
1729 \value SH_Menu_SubMenuPopupDelay The number of milliseconds
1730 to wait before opening a submenu (256 on Windows, 96 on Motif).
1731
1732 \value SH_Menu_Scrollable Whether popup menus must support scrolling.
1733
1734 \value SH_Menu_SloppySubMenus Whether popup menus must support
1735 the user moving the mouse cursor to a submenu while crossing
1736 other items of the menu. This is supported on most modern
1737 desktop platforms.
1738
1739 \value SH_Menu_SubMenuUniDirection Since Qt 5.5. If the cursor has
1740 to move towards the submenu (like it is on \macos), or if the
1741 cursor can move in any direction as long as it reaches the
1742 submenu before the sloppy timeout.
1743
1744 \value SH_Menu_SubMenuUniDirectionFailCount Since Qt 5.5. When
1745 SH_Menu_SubMenuUniDirection is defined this enum defines the
1746 number of failed mouse moves before the sloppy submenu is
1747 discarded. This can be used to control the "strictness" of the
1748 uni direction algorithm.
1749
1750 \value SH_Menu_SubMenuSloppySelectOtherActions Since Qt 5.5. Should
1751 other action items be selected when the mouse moves towards a
1752 sloppy submenu.
1753
1754 \value SH_Menu_SubMenuSloppyCloseTimeout Since Qt 5.5. The timeout
1755 used to close sloppy submenus.
1756
1757 \value SH_Menu_SubMenuResetWhenReenteringParent Since Qt 5.5. When
1758 entering parent from child submenu, should the sloppy state be
1759 reset, effectively closing the child and making the current
1760 submenu active.
1761
1762 \value SH_Menu_SubMenuDontStartSloppyOnLeave Since Qt 5.5. Do not
1763 start sloppy timers when the mouse leaves a sub-menu.
1764
1765 \value SH_ScrollView_FrameOnlyAroundContents Whether scrollviews
1766 draw their frame only around contents (like Motif), or around
1767 contents, scroll bars and corner widgets (like Windows).
1768
1769 \value SH_MenuBar_AltKeyNavigation Menu bars items are navigable
1770 by pressing Alt, followed by using the arrow keys to select
1771 the desired item.
1772
1773 \value SH_ComboBox_ListMouseTracking Mouse tracking in combobox
1774 drop-down lists.
1775
1776 \value SH_Menu_MouseTracking Mouse tracking in popup menus.
1777
1778 \value SH_MenuBar_MouseTracking Mouse tracking in menu bars.
1779
1780 \value SH_Menu_FillScreenWithScroll Whether scrolling popups
1781 should fill the screen as they are scrolled.
1782
1783 \value SH_Menu_SelectionWrap Whether popups should allow the selections
1784 to wrap, that is when selection should the next item be the first item.
1785
1786 \value SH_ItemView_ChangeHighlightOnFocus Gray out selected items
1787 when losing focus.
1788
1789 \value SH_Widget_ShareActivation Turn on sharing activation with
1790 floating modeless dialogs.
1791
1792 \value SH_TabBar_SelectMouseType Which type of mouse event should
1793 cause a tab to be selected.
1794
1795 \value SH_ListViewExpand_SelectMouseType Which type of mouse event should
1796 cause a list view expansion to be selected.
1797
1798 \value SH_TabBar_PreferNoArrows Whether a tab bar should suggest a size
1799 to prevent scoll arrows.
1800
1801 \value SH_ComboBox_Popup Allows popups as a combobox drop-down
1802 menu.
1803
1804 \omitvalue SH_ComboBox_UseNativePopup
1805
1806 \value SH_Workspace_FillSpaceOnMaximize The workspace should
1807 maximize the client area.
1808
1809 \value SH_TitleBar_NoBorder The title bar has no border.
1810
1811 \value SH_ScrollBar_StopMouseOverSlider Obsolete. Use
1812 SH_Slider_StopMouseOverSlider instead.
1813
1814 \value SH_Slider_StopMouseOverSlider Stops auto-repeat when
1815 the slider reaches the mouse position.
1816
1817 \value SH_BlinkCursorWhenTextSelected Whether cursor should blink
1818 when text is selected.
1819
1820 \value SH_RichText_FullWidthSelection Whether richtext selections
1821 should extend to the full width of the document.
1822
1823 \value SH_GroupBox_TextLabelVerticalAlignment How to vertically align a
1824 group box's text label.
1825
1826 \value SH_GroupBox_TextLabelColor How to paint a group box's text label.
1827
1828 \value SH_DialogButtons_DefaultButton Which button gets the
1829 default status in a dialog's button widget.
1830
1831 \value SH_ToolBox_SelectedPageTitleBold Boldness of the selected
1832 page title in a QToolBox.
1833
1834 \value SH_LineEdit_PasswordCharacter The Unicode character to be
1835 used for passwords.
1836
1837 \value SH_LineEdit_PasswordMaskDelay Determines the delay before visible character is masked
1838 with password character, in milliseconds. This enum value was added in Qt 5.4.
1839
1840 \value SH_Table_GridLineColor The RGBA value of the grid for a table.
1841
1842 \value SH_UnderlineShortcut Whether shortcuts are underlined.
1843
1844 \value SH_SpellCheckUnderlineStyle Obsolete. Use SpellCheckUnderlineStyle
1845 hint in QPlatformTheme instead.
1846
1847 \value SH_SpinBox_AnimateButton Animate a click when up or down is
1848 pressed in a spin box.
1849 \value SH_SpinBox_KeyPressAutoRepeatRate Auto-repeat interval for
1850 spinbox key presses.
1851 \value SH_SpinBox_ClickAutoRepeatRate Auto-repeat interval for
1852 spinbox mouse clicks.
1853 \value SH_SpinBox_ClickAutoRepeatThreshold Auto-repeat threshold for
1854 spinbox mouse clicks.
1855 \value SH_ToolTipLabel_Opacity An integer indicating the opacity for
1856 the tip label, 0 is completely transparent, 255 is completely
1857 opaque.
1858 \value SH_DrawMenuBarSeparator Indicates whether or not the menu bar draws separators.
1859 \value SH_TitleBar_ModifyNotification Indicates if the title bar should show
1860 a '*' for windows that are modified.
1861
1862 \value SH_Button_FocusPolicy The default focus policy for buttons.
1863
1864 \value SH_CustomBase Base value for custom style hints.
1865 Custom values must be greater than this value.
1866
1867 \value SH_MessageBox_UseBorderForButtonSpacing A boolean indicating what the to
1868 use the border of the buttons (computed as half the button height) for the spacing
1869 of the button in a message box.
1870
1871 \value SH_MessageBox_CenterButtons A boolean indicating whether the buttons in the
1872 message box should be centered or not (see QDialogButtonBox::setCentered()).
1873
1874 \value SH_MessageBox_TextInteractionFlags A boolean indicating if
1875 the text in a message box should allow user interfactions (e.g.
1876 selection) or not.
1877
1878 \value SH_TitleBar_AutoRaise A boolean indicating whether
1879 controls on a title bar ought to update when the mouse is over them.
1880
1881 \value SH_ToolButton_PopupDelay An int indicating the popup delay in milliseconds
1882 for menus attached to tool buttons.
1883
1884 \value SH_FocusFrame_Mask The mask of the focus frame.
1885
1886 \value SH_RubberBand_Mask The mask of the rubber band.
1887
1888 \value SH_WindowFrame_Mask The mask of the window frame.
1889
1890 \value SH_SpinControls_DisableOnBounds Determines if the spin controls will shown
1891 as disabled when reaching the spin range boundary.
1892
1893 \value SH_Dial_BackgroundRole Defines the style's preferred
1894 background role (as QPalette::ColorRole) for a dial widget.
1895
1896 \value SH_ComboBox_LayoutDirection The layout direction for the
1897 combo box. By default it should be the same as indicated by the
1898 QStyleOption::direction variable.
1899
1900 \value SH_ItemView_EllipsisLocation The location where ellipses should be
1901 added for item text that is too long to fit in an view item.
1902
1903 \value SH_ItemView_ShowDecorationSelected When an item in an item
1904 view is selected, also highlight the branch or other decoration.
1905
1906 \value SH_ItemView_ActivateItemOnSingleClick Emit the activated signal
1907 when the user single clicks on an item in an item in an item view.
1908 Otherwise the signal is emitted when the user double clicks on an item.
1909
1910 \value SH_Slider_AbsoluteSetButtons Which mouse buttons cause a slider
1911 to set the value to the position clicked on.
1912
1913 \value SH_Slider_PageSetButtons Which mouse buttons cause a slider
1914 to page step the value.
1915
1916 \value SH_TabBar_ElideMode The default eliding style for a tab bar.
1917
1918 \value SH_DialogButtonLayout Controls how buttons are laid out in a QDialogButtonBox, returns a QDialogButtonBox::ButtonLayout enum.
1919
1920 \value SH_WizardStyle Controls the look and feel of a QWizard. Returns a QWizard::WizardStyle enum.
1921
1922 \value SH_FormLayoutWrapPolicy Provides a default for how rows are wrapped in a QFormLayout. Returns a QFormLayout::RowWrapPolicy enum.
1923 \value SH_FormLayoutFieldGrowthPolicy Provides a default for how fields can grow in a QFormLayout. Returns a QFormLayout::FieldGrowthPolicy enum.
1924 \value SH_FormLayoutFormAlignment Provides a default for how a QFormLayout aligns its contents within the available space. Returns a Qt::Alignment enum.
1925 \value SH_FormLayoutLabelAlignment Provides a default for how a QFormLayout aligns labels within the available space. Returns a Qt::Alignment enum.
1926
1927 \value SH_ItemView_ArrowKeysNavigateIntoChildren Controls whether the tree view will select the first child when it is exapanded and the right arrow key is pressed.
1928 \value SH_ComboBox_PopupFrameStyle The frame style used when drawing a combobox popup menu.
1929
1930 \value SH_DialogButtonBox_ButtonsHaveIcons Indicates whether or not StandardButtons in QDialogButtonBox should have icons or not.
1931 \value SH_ItemView_MovementWithoutUpdatingSelection The item view is able to indicate a current item without changing the selection.
1932 \value SH_ToolTip_Mask The mask of a tool tip.
1933
1934 \value SH_FocusFrame_AboveWidget The FocusFrame is stacked above the widget that it is "focusing on".
1935
1936 \value SH_TextControl_FocusIndicatorTextCharFormat Specifies the text format used to highlight focused anchors in rich text
1937 documents displayed for example in QTextBrowser. The format has to be a QTextCharFormat returned in the variant of the
1938 QStyleHintReturnVariant return value. The QTextFormat::OutlinePen property is used for the outline and QTextFormat::BackgroundBrush
1939 for the background of the highlighted area.
1940
1941 \value SH_Menu_FlashTriggeredItem Flash triggered item.
1942 \value SH_Menu_FadeOutOnHide Fade out the menu instead of hiding it immediately.
1943
1944 \value SH_TabWidget_DefaultTabPosition Default position of the tab bar in a tab widget.
1945
1946 \value SH_ToolBar_Movable Determines if the tool bar is movable by default.
1947
1948 \value SH_ItemView_PaintAlternatingRowColorsForEmptyArea Whether QTreeView paints alternating row colors for the area that does not have any items.
1949
1950 \value SH_Menu_Mask The mask for a popup menu.
1951
1952 \value SH_ItemView_DrawDelegateFrame Determines if there should be a frame for a delegate widget.
1953
1954 \value SH_TabBar_CloseButtonPosition Determines the position of the close button on a tab in a tab bar.
1955
1956 \value SH_DockWidget_ButtonsHaveFrame Determines if dockwidget buttons should have frames. Default is true.
1957
1958 \value SH_ToolButtonStyle Determines the default system style for tool buttons that uses Qt::ToolButtonFollowStyle.
1959
1960 \value SH_RequestSoftwareInputPanel Determines when a software input panel should
1961 be requested by input widgets. Returns an enum of type QStyle::RequestSoftwareInputPanel.
1962
1963 \value SH_ScrollBar_Transient Determines if the style supports transient scroll bars. Transient
1964 scroll bars appear when the content is scrolled and disappear when they are no longer needed.
1965
1966 \value SH_Menu_SupportsSections Determines if the style displays sections in menus or treat them as
1967 plain separators. Sections are separators with a text and icon hint.
1968
1969 \value SH_ToolTip_WakeUpDelay Determines the delay before a tooltip is shown, in milliseconds.
1970
1971 \value SH_ToolTip_FallAsleepDelay Determines the delay (in milliseconds) before a new wake time is needed when
1972 a tooltip is shown (notice: shown, not hidden). When a new wake isn't needed, a user-requested tooltip
1973 will be shown nearly instantly.
1974
1975 \value SH_Widget_Animate Deprecated. Use \l{SH_Widget_Animation_Duration} instead.
1976
1977 \value SH_Splitter_OpaqueResize Determines if widgets are resized dynamically (opaquely) while
1978 interactively moving the splitter. This enum value was introduced in Qt 5.2.
1979
1980 \value SH_TabBar_ChangeCurrentDelay Determines the delay before the current
1981 tab is changed while dragging over the tabbar, in milliseconds. This
1982 enum value has been introduced in Qt 5.4
1983
1984 \value SH_ItemView_ScrollMode The default vertical and horizontal scroll mode as specified
1985 by the style. Can be overridden with QAbstractItemView::setVerticalScrollMode() and
1986 QAbstractItemView::setHorizontalScrollMode(). This enum value has been introduced in Qt 5.7.
1987
1988 \value SH_TitleBar_ShowToolTipsOnButtons
1989 Determines if tool tips are shown on window title bar buttons.
1990 The Mac style, for example, sets this to false.
1991 This enum value has been introduced in Qt 5.10.
1992
1993 \value SH_Widget_Animation_Duration
1994 Determines how much an animation should last (in ms).
1995 A value equal to zero means that the animations will be disabled.
1996 This enum value has been introduced in Qt 5.10.
1997
1998 \value SH_ComboBox_AllowWheelScrolling
1999 Determines if the mouse wheel can be used to scroll inside a QComboBox.
2000 This is on by default in all styles except the Mac style.
2001 This enum value has been introduced in Qt 5.10.
2002
2003 \value SH_SpinBox_ButtonsInsideFrame
2004 Determines if the spin box buttons are inside the line edit frame.
2005 This enum value has been introduced in Qt 5.11.
2006
2007 \value SH_SpinBox_StepModifier
2008 Determines which Qt::KeyboardModifier increases the step rate of
2009 QAbstractSpinBox. Possible values are Qt::NoModifier,
2010 Qt::ControlModifier (default) or Qt::ShiftModifier. Qt::NoModifier
2011 disables this feature.
2012 This enum value has been introduced in Qt 5.12.
2013
2014 \sa styleHint()
2015*/
2016
2017/*!
2018 \fn int QStyle::styleHint(StyleHint hint, const QStyleOption *option, const QWidget *widget, QStyleHintReturn *returnData) const
2019
2020 Returns an integer representing the specified style \a hint for
2021 the given \a widget described by the provided style \a option.
2022
2023 \a returnData is used when the querying widget needs more detailed data than
2024 the integer that styleHint() returns. See the QStyleHintReturn class
2025 description for details.
2026*/
2027
2028/*!
2029 \enum QStyle::StandardPixmap
2030
2031 This enum describes the available standard pixmaps. A standard pixmap is a pixmap that
2032 can follow some existing GUI style or guideline.
2033
2034 \value SP_TitleBarMinButton Minimize button on title bars (e.g.,
2035 in QMdiSubWindow).
2036 \value SP_TitleBarMenuButton Menu button on a title bar.
2037 \value SP_TitleBarMaxButton Maximize button on title bars.
2038 \value SP_TitleBarCloseButton Close button on title bars.
2039 \value SP_TitleBarNormalButton Normal (restore) button on title bars.
2040 \value SP_TitleBarShadeButton Shade button on title bars.
2041 \value SP_TitleBarUnshadeButton Unshade button on title bars.
2042 \value SP_TitleBarContextHelpButton The Context help button on title bars.
2043 \value SP_MessageBoxInformation The "information" icon.
2044 \value SP_MessageBoxWarning The "warning" icon.
2045 \value SP_MessageBoxCritical The "critical" icon.
2046 \value SP_MessageBoxQuestion The "question" icon.
2047 \value SP_DesktopIcon The "desktop" icon.
2048 \value SP_TrashIcon The "trash" icon.
2049 \value SP_ComputerIcon The "My computer" icon.
2050 \value SP_DriveFDIcon The floppy icon.
2051 \value SP_DriveHDIcon The harddrive icon.
2052 \value SP_DriveCDIcon The CD icon.
2053 \value SP_DriveDVDIcon The DVD icon.
2054 \value SP_DriveNetIcon The network icon.
2055 \value SP_DirHomeIcon The home directory icon.
2056 \value SP_DirOpenIcon The open directory icon.
2057 \value SP_DirClosedIcon The closed directory icon.
2058 \value SP_DirIcon The directory icon.
2059 \value SP_DirLinkIcon The link to directory icon.
2060 \value SP_DirLinkOpenIcon The link to open directory icon.
2061 \value SP_FileIcon The file icon.
2062 \value SP_FileLinkIcon The link to file icon.
2063 \value SP_FileDialogStart The "start" icon in a file dialog.
2064 \value SP_FileDialogEnd The "end" icon in a file dialog.
2065 \value SP_FileDialogToParent The "parent directory" icon in a file dialog.
2066 \value SP_FileDialogNewFolder The "create new folder" icon in a file dialog.
2067 \value SP_FileDialogDetailedView The detailed view icon in a file dialog.
2068 \value SP_FileDialogInfoView The file info icon in a file dialog.
2069 \value SP_FileDialogContentsView The contents view icon in a file dialog.
2070 \value SP_FileDialogListView The list view icon in a file dialog.
2071 \value SP_FileDialogBack The back arrow in a file dialog.
2072 \value SP_DockWidgetCloseButton Close button on dock windows (see also QDockWidget).
2073 \value SP_ToolBarHorizontalExtensionButton Extension button for horizontal toolbars.
2074 \value SP_ToolBarVerticalExtensionButton Extension button for vertical toolbars.
2075 \value SP_DialogOkButton Icon for a standard OK button in a QDialogButtonBox.
2076 \value SP_DialogCancelButton Icon for a standard Cancel button in a QDialogButtonBox.
2077 \value SP_DialogHelpButton Icon for a standard Help button in a QDialogButtonBox.
2078 \value SP_DialogOpenButton Icon for a standard Open button in a QDialogButtonBox.
2079 \value SP_DialogSaveButton Icon for a standard Save button in a QDialogButtonBox.
2080 \value SP_DialogCloseButton Icon for a standard Close button in a QDialogButtonBox.
2081 \value SP_DialogApplyButton Icon for a standard Apply button in a QDialogButtonBox.
2082 \value SP_DialogResetButton Icon for a standard Reset button in a QDialogButtonBox.
2083 \value SP_DialogDiscardButton Icon for a standard Discard button in a QDialogButtonBox.
2084 \value SP_DialogYesButton Icon for a standard Yes button in a QDialogButtonBox.
2085 \value SP_DialogNoButton Icon for a standard No button in a QDialogButtonBox.
2086 \value SP_ArrowUp Icon arrow pointing up.
2087 \value SP_ArrowDown Icon arrow pointing down.
2088 \value SP_ArrowLeft Icon arrow pointing left.
2089 \value SP_ArrowRight Icon arrow pointing right.
2090 \value SP_ArrowBack Equivalent to SP_ArrowLeft when the current layout direction is Qt::LeftToRight, otherwise SP_ArrowRight.
2091 \value SP_ArrowForward Equivalent to SP_ArrowRight when the current layout direction is Qt::LeftToRight, otherwise SP_ArrowLeft.
2092 \value SP_CommandLink Icon used to indicate a Vista style command link glyph.
2093 \value SP_VistaShield Icon used to indicate UAC prompts on Windows Vista. This will return a null pixmap or icon on all other platforms.
2094 \value SP_BrowserReload Icon indicating that the current page should be reloaded.
2095 \value SP_BrowserStop Icon indicating that the page loading should stop.
2096 \value SP_MediaPlay Icon indicating that media should begin playback.
2097 \value SP_MediaStop Icon indicating that media should stop playback.
2098 \value SP_MediaPause Icon indicating that media should pause playback.
2099 \value SP_MediaSkipForward Icon indicating that media should skip forward.
2100 \value SP_MediaSkipBackward Icon indicating that media should skip backward.
2101 \value SP_MediaSeekForward Icon indicating that media should seek forward.
2102 \value SP_MediaSeekBackward Icon indicating that media should seek backward.
2103 \value SP_MediaVolume Icon indicating a volume control.
2104 \value SP_MediaVolumeMuted Icon indicating a muted volume control.
2105 \value SP_LineEditClearButton Icon for a standard clear button in a QLineEdit. This enum value was added in Qt 5.2.
2106 \value SP_DialogYesToAllButton Icon for a standard YesToAll button in a QDialogButtonBox.
2107 This enum value was added in Qt 5.14.
2108 \value SP_DialogNoToAllButton Icon for a standard NoToAll button in a QDialogButtonBox.
2109 This enum value was added in Qt 5.14.
2110 \value SP_DialogSaveAllButton Icon for a standard SaveAll button in a QDialogButtonBox.
2111 This enum value was added in Qt 5.14.
2112 \value SP_DialogAbortButton Icon for a standard Abort button in a QDialogButtonBox.
2113 This enum value was added in Qt 5.14.
2114 \value SP_DialogRetryButton Icon for a standard Retry button in a QDialogButtonBox.
2115 This enum value was added in Qt 5.14.
2116 \value SP_DialogIgnoreButton Icon for a standard Ignore button in a QDialogButtonBox.
2117 This enum value was added in Qt 5.14.
2118 \value SP_RestoreDefaultsButton Icon for a standard RestoreDefaults button in a QDialogButtonBox.
2119 This enum value was added in Qt 5.14.
2120 \value SP_CustomBase Base value for custom standard pixmaps;
2121 custom values must be greater than this value.
2122
2123 \sa standardIcon()
2124*/
2125
2126/*!
2127 \fn QPixmap QStyle::generatedIconPixmap(QIcon::Mode iconMode,
2128 const QPixmap &pixmap, const QStyleOption *option) const
2129
2130 Returns a copy of the given \a pixmap, styled to conform to the
2131 specified \a iconMode and taking into account the palette
2132 specified by \a option.
2133
2134 The \a option parameter can pass extra information, but
2135 it must contain a palette.
2136
2137 Note that not all pixmaps will conform, in which case the returned
2138 pixmap is a plain copy.
2139
2140 \sa QIcon
2141*/
2142
2143/*!
2144 \fn QPixmap QStyle::standardPixmap(StandardPixmap standardPixmap, const QStyleOption *option, const QWidget *widget) const
2145
2146 \obsolete
2147 Returns a pixmap for the given \a standardPixmap.
2148
2149 A standard pixmap is a pixmap that can follow some existing GUI
2150 style or guideline. The \a option argument can be used to pass
2151 extra information required when defining the appropriate
2152 pixmap. The \a widget argument is optional and can also be used to
2153 aid the determination of the pixmap.
2154
2155 Developers calling standardPixmap() should instead call standardIcon()
2156 Developers who re-implemented standardPixmap() should instead re-implement
2157 standardIcon().
2158
2159 \sa standardIcon()
2160*/
2161
2162
2163/*!
2164 \fn QRect QStyle::visualRect(Qt::LayoutDirection direction, const QRect &boundingRectangle, const QRect &logicalRectangle)
2165
2166 Returns the given \a logicalRectangle converted to screen
2167 coordinates based on the specified \a direction. The \a
2168 boundingRectangle is used when performing the translation.
2169
2170 This function is provided to support right-to-left desktops, and
2171 is typically used in implementations of the subControlRect()
2172 function.
2173
2174 \sa QWidget::layoutDirection
2175*/
2176QRect QStyle::visualRect(Qt::LayoutDirection direction, const QRect &boundingRect, const QRect &logicalRect)
2177{
2178 if (direction == Qt::LeftToRight)
2179 return logicalRect;
2180 QRect rect = logicalRect;
2181 rect.translate(2 * (boundingRect.right() - logicalRect.right()) +
2182 logicalRect.width() - boundingRect.width(), 0);
2183 return rect;
2184}
2185
2186/*!
2187 \fn QPoint QStyle::visualPos(Qt::LayoutDirection direction, const QRect &boundingRectangle, const QPoint &logicalPosition)
2188
2189 Returns the given \a logicalPosition converted to screen
2190 coordinates based on the specified \a direction. The \a
2191 boundingRectangle is used when performing the translation.
2192
2193 \sa QWidget::layoutDirection
2194*/
2195QPoint QStyle::visualPos(Qt::LayoutDirection direction, const QRect &boundingRect, const QPoint &logicalPos)
2196{
2197 if (direction == Qt::LeftToRight)
2198 return logicalPos;
2199 return QPoint(boundingRect.right() - logicalPos.x(), logicalPos.y());
2200}
2201
2202/*!
2203 Returns a new rectangle of the specified \a size that is aligned to the given \a
2204 rectangle according to the specified \a alignment and \a direction.
2205 */
2206QRect QStyle::alignedRect(Qt::LayoutDirection direction, Qt::Alignment alignment, const QSize &size, const QRect &rectangle)
2207{
2208 alignment = visualAlignment(direction, alignment);
2209 int x = rectangle.x();
2210 int y = rectangle.y();
2211 int w = size.width();
2212 int h = size.height();
2213 if ((alignment & Qt::AlignVCenter) == Qt::AlignVCenter)
2214 y += rectangle.size().height()/2 - h/2;
2215 else if ((alignment & Qt::AlignBottom) == Qt::AlignBottom)
2216 y += rectangle.size().height() - h;
2217 if ((alignment & Qt::AlignRight) == Qt::AlignRight)
2218 x += rectangle.size().width() - w;
2219 else if ((alignment & Qt::AlignHCenter) == Qt::AlignHCenter)
2220 x += rectangle.size().width()/2 - w/2;
2221 return QRect(x, y, w, h);
2222}
2223
2224/*!
2225 Transforms an \a alignment of Qt::AlignLeft or Qt::AlignRight
2226 without Qt::AlignAbsolute into Qt::AlignLeft or Qt::AlignRight with
2227 Qt::AlignAbsolute according to the layout \a direction. The other
2228 alignment flags are left untouched.
2229
2230 If no horizontal alignment was specified, the function returns the
2231 default alignment for the given layout \a direction.
2232
2233 QWidget::layoutDirection
2234*/
2235Qt::Alignment QStyle::visualAlignment(Qt::LayoutDirection direction, Qt::Alignment alignment)
2236{
2237 return QGuiApplicationPrivate::visualAlignment(direction, alignment);
2238}
2239
2240/*!
2241 Converts the given \a logicalValue to a pixel position. The \a min
2242 parameter maps to 0, \a max maps to \a span and other values are
2243 distributed evenly in-between.
2244
2245 This function can handle the entire integer range without
2246 overflow, providing that \a span is less than 4096.
2247
2248 By default, this function assumes that the maximum value is on the
2249 right for horizontal items and on the bottom for vertical items.
2250 Set the \a upsideDown parameter to true to reverse this behavior.
2251
2252 \sa sliderValueFromPosition()
2253*/
2254
2255int QStyle::sliderPositionFromValue(int min, int max, int logicalValue, int span, bool upsideDown)
2256{
2257 if (span <= 0 || logicalValue < min || max <= min)
2258 return 0;
2259 if (logicalValue > max)
2260 return upsideDown ? span : min;
2261
2262 uint range = max - min;
2263 uint p = upsideDown ? max - logicalValue : logicalValue - min;
2264
2265 if (range > (uint)INT_MAX/4096) {
2266 double dpos = (double(p))/(double(range)/span);
2267 return int(dpos);
2268 } else if (range > (uint)span) {
2269 return (2 * p * span + range) / (2*range);
2270 } else {
2271 uint div = span / range;
2272 uint mod = span % range;
2273 return p * div + (2 * p * mod + range) / (2 * range);
2274 }
2275 // equiv. to (p * span) / range + 0.5
2276 // no overflow because of this implicit assumption:
2277 // span <= 4096
2278}
2279
2280/*!
2281 \fn int QStyle::sliderValueFromPosition(int min, int max, int position, int span, bool upsideDown)
2282
2283 Converts the given pixel \a position to a logical value. 0 maps to
2284 the \a min parameter, \a span maps to \a max and other values are
2285 distributed evenly in-between.
2286
2287 This function can handle the entire integer range without
2288 overflow.
2289
2290 By default, this function assumes that the maximum value is on the
2291 right for horizontal items and on the bottom for vertical
2292 items. Set the \a upsideDown parameter to true to reverse this
2293 behavior.
2294
2295 \sa sliderPositionFromValue()
2296*/
2297
2298int QStyle::sliderValueFromPosition(int min, int max, int pos, int span, bool upsideDown)
2299{
2300 if (span <= 0 || pos <= 0)
2301 return upsideDown ? max : min;
2302 if (pos >= span)
2303 return upsideDown ? min : max;
2304
2305 uint range = max - min;
2306
2307 if ((uint)span > range) {
2308 int tmp = (2 * pos * range + span) / (2 * span);
2309 return upsideDown ? max - tmp : tmp + min;
2310 } else {
2311 uint div = range / span;
2312 uint mod = range % span;
2313 int tmp = pos * div + (2 * pos * mod + span) / (2 * span);
2314 return upsideDown ? max - tmp : tmp + min;
2315 }
2316 // equiv. to min + (pos*range)/span + 0.5
2317 // no overflow because of this implicit assumption:
2318 // pos <= span < sqrt(INT_MAX+0.0625)+0.25 ~ sqrt(INT_MAX)
2319}
2320
2321/*!
2322 Returns the style's standard palette.
2323
2324 Note that on systems that support system colors, the style's
2325 standard palette is not used. In particular, the Windows
2326 Vista and Mac styles do not use the standard palette, but make
2327 use of native theme engines. With these styles, you should not set
2328 the palette with QApplication::setPalette().
2329
2330 \sa QApplication::setPalette()
2331 */
2332QPalette QStyle::standardPalette() const
2333{
2334 QColor background = QColor(0xd4, 0xd0, 0xc8); // win 2000 grey
2335
2336 QColor light(background.lighter());
2337 QColor dark(background.darker());
2338 QColor mid(Qt::gray);
2339 QPalette palette(Qt::black, background, light, dark, mid, Qt::black, Qt::white);
2340 palette.setBrush(QPalette::Disabled, QPalette::WindowText, dark);
2341 palette.setBrush(QPalette::Disabled, QPalette::Text, dark);
2342 palette.setBrush(QPalette::Disabled, QPalette::ButtonText, dark);
2343 palette.setBrush(QPalette::Disabled, QPalette::Base, background);
2344 return palette;
2345}
2346
2347/*!
2348 \since 4.1
2349
2350 \fn QIcon QStyle::standardIcon(StandardPixmap standardIcon, const QStyleOption *option = 0,
2351 const QWidget *widget = 0) const = 0;
2352
2353 Returns an icon for the given \a standardIcon.
2354
2355 The \a standardIcon is a standard pixmap which can follow some
2356 existing GUI style or guideline. The \a option argument can be
2357 used to pass extra information required when defining the
2358 appropriate icon. The \a widget argument is optional and can also
2359 be used to aid the determination of the icon.
2360*/
2361
2362/*!
2363 \since 4.3
2364
2365 \fn int QStyle::layoutSpacing(QSizePolicy::ControlType control1,
2366 QSizePolicy::ControlType control2, Qt::Orientation orientation,
2367 const QStyleOption *option = nullptr, const QWidget *widget = nullptr) const
2368
2369 Returns the spacing that should be used between \a control1 and
2370 \a control2 in a layout. \a orientation specifies whether the
2371 controls are laid out side by side or stacked vertically. The \a
2372 option parameter can be used to pass extra information about the
2373 parent widget. The \a widget parameter is optional and can also
2374 be used if \a option is \nullptr.
2375
2376 This function is called by the layout system. It is used only if
2377 PM_LayoutHorizontalSpacing or PM_LayoutVerticalSpacing returns a
2378 negative value.
2379
2380 \sa combinedLayoutSpacing()
2381*/
2382
2383/*!
2384 \since 4.3
2385
2386 Returns the spacing that should be used between \a controls1 and
2387 \a controls2 in a layout. \a orientation specifies whether the
2388 controls are laid out side by side or stacked vertically. The \a
2389 option parameter can be used to pass extra information about the
2390 parent widget. The \a widget parameter is optional and can also
2391 be used if \a option is \nullptr.
2392
2393 \a controls1 and \a controls2 are OR-combination of zero or more
2394 \l{QSizePolicy::ControlTypes}{control types}.
2395
2396 This function is called by the layout system. It is used only if
2397 PM_LayoutHorizontalSpacing or PM_LayoutVerticalSpacing returns a
2398 negative value.
2399
2400 \sa layoutSpacing()
2401*/
2402int QStyle::combinedLayoutSpacing(QSizePolicy::ControlTypes controls1,
2403 QSizePolicy::ControlTypes controls2, Qt::Orientation orientation,
2404 QStyleOption *option, QWidget *widget) const
2405{
2406 QSizePolicy::ControlType array1[MaxBits];
2407 QSizePolicy::ControlType array2[MaxBits];
2408 int count1 = unpackControlTypes(controls1, array1);
2409 int count2 = unpackControlTypes(controls2, array2);
2410 int result = -1;
2411
2412 for (int i = 0; i < count1; ++i) {
2413 for (int j = 0; j < count2; ++j) {
2414 int spacing = layoutSpacing(array1[i], array2[j], orientation, option, widget);
2415 result = qMax(spacing, result);
2416 }
2417 }
2418 return result;
2419}
2420
2421// ### Qt 6: Remove in favor of template<class T> QDebug operator<<(QDebug, const QFlags<T> &).
2422#if QT_VERSION < QT_VERSION_CHECK(6,0,0)
2423QT_BEGIN_INCLUDE_NAMESPACE
2424# include <QDebug>
2425QT_END_INCLUDE_NAMESPACE
2426
2427# if !defined(QT_NO_DEBUG_STREAM)
2428QDebug operator<<(QDebug debug, QStyle::State state)
2429{
2430# if !defined(QT_NO_DEBUG)
2431 return operator<< <QStyle::StateFlag>(debug, state);
2432# else
2433 Q_UNUSED(state);
2434 return debug;
2435# endif
2436}
2437# endif // !QT_NO_DEBUG_STREAM
2438#endif // QT_VERSION < QT_VERSION_CHECK(6,0,0)
2439
2440/*!
2441 \since 4.6
2442
2443 \fn const QStyle *QStyle::proxy() const
2444
2445 This function returns the current proxy for this style.
2446 By default most styles will return themselves. However
2447 when a proxy style is in use, it will allow the style to
2448 call back into its proxy.
2449*/
2450const QStyle * QStyle::proxy() const
2451{
2452 Q_D(const QStyle);
2453 return d->proxyStyle;
2454}
2455
2456/* \internal
2457
2458 This function sets the base style that style calls will be
2459 redirected to. Note that ownership is not transferred.
2460*/
2461void QStyle::setProxy(QStyle *style)
2462{
2463 Q_D(QStyle);
2464 d->proxyStyle = style;
2465}
2466
2467//Windows and KDE allow menus to cover the taskbar, while GNOME and macOS don't
2468bool QStylePrivate::useFullScreenForPopup()
2469{
2470 auto theme = QGuiApplicationPrivate::platformTheme();
2471 return theme && theme->themeHint(QPlatformTheme::UseFullScreenForPopupMenu).toBool();
2472}
2473
2474QT_END_NAMESPACE
2475
2476#include "moc_qstyle.cpp"
2477

source code of qtbase/src/widgets/styles/qstyle.cpp