1 | /**************************************************************************** |
2 | ** |
3 | ** Copyright (C) 2016 The Qt Company Ltd. |
4 | ** Contact: https://www.qt.io/licensing/ |
5 | ** |
6 | ** This file is part of the Qt Designer of the Qt Toolkit. |
7 | ** |
8 | ** $QT_BEGIN_LICENSE:GPL-EXCEPT$ |
9 | ** Commercial License Usage |
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16 | ** |
17 | ** GNU General Public License Usage |
18 | ** Alternatively, this file may be used under the terms of the GNU |
19 | ** General Public License version 3 as published by the Free Software |
20 | ** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT |
21 | ** included in the packaging of this file. Please review the following |
22 | ** information to ensure the GNU General Public License requirements will |
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24 | ** |
25 | ** $QT_END_LICENSE$ |
26 | ** |
27 | ****************************************************************************/ |
28 | |
29 | #include "previewframe.h" |
30 | #include "previewwidget.h" |
31 | |
32 | #include <QtCore/qcoreapplication.h> |
33 | #include <QtCore/qdebug.h> |
34 | #include <QtGui/qpainter.h> |
35 | #include <QtWidgets/qmdiarea.h> |
36 | #include <QtWidgets/qmdisubwindow.h> |
37 | #include <QtGui/qevent.h> |
38 | |
39 | QT_BEGIN_NAMESPACE |
40 | |
41 | namespace qdesigner_internal { |
42 | |
43 | class PreviewMdiArea: public QMdiArea { |
44 | public: |
45 | PreviewMdiArea(QWidget *parent = nullptr) : QMdiArea(parent) {} |
46 | protected: |
47 | bool viewportEvent(QEvent *event) override; |
48 | }; |
49 | |
50 | bool PreviewMdiArea::viewportEvent (QEvent * event) { |
51 | if (event->type() != QEvent::Paint) |
52 | return QMdiArea::viewportEvent (event); |
53 | QWidget *paintWidget = viewport(); |
54 | QPainter p(paintWidget); |
55 | p.fillRect(rect(), color: paintWidget->palette().color(cr: backgroundRole()).darker()); |
56 | p.setPen(QPen(Qt::white)); |
57 | //: Palette editor background |
58 | p.drawText(x: 0, y: height() / 2, w: width(), h: height(), flags: Qt::AlignHCenter, |
59 | str: QCoreApplication::translate(context: "qdesigner_internal::PreviewMdiArea" , key: "The moose in the noose\nate the goose who was loose." )); |
60 | return true; |
61 | } |
62 | |
63 | PreviewFrame::PreviewFrame(QWidget *parent) : |
64 | QFrame(parent), |
65 | m_mdiArea(new PreviewMdiArea(this)) |
66 | { |
67 | m_mdiArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAsNeeded); |
68 | m_mdiArea->setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded); |
69 | setFrameStyle(QFrame::StyledPanel | QFrame::Sunken); |
70 | setLineWidth(1); |
71 | |
72 | QVBoxLayout *vbox = new QVBoxLayout(this); |
73 | vbox->setContentsMargins(QMargins()); |
74 | vbox->addWidget(m_mdiArea); |
75 | |
76 | setMinimumSize(ensureMdiSubWindow()->minimumSizeHint()); |
77 | } |
78 | |
79 | void PreviewFrame::setPreviewPalette(const QPalette &pal) |
80 | { |
81 | ensureMdiSubWindow()->setPalette(pal); |
82 | } |
83 | |
84 | void PreviewFrame::setSubWindowActive(bool active) |
85 | { |
86 | m_mdiArea->setActiveSubWindow (active ? ensureMdiSubWindow() : nullptr); |
87 | } |
88 | |
89 | QMdiSubWindow *PreviewFrame::ensureMdiSubWindow() |
90 | { |
91 | if (!m_mdiSubWindow) { |
92 | PreviewWidget *previewWidget = new PreviewWidget(m_mdiArea); |
93 | m_mdiSubWindow = m_mdiArea->addSubWindow(widget: previewWidget, flags: Qt::WindowTitleHint | Qt::WindowMinimizeButtonHint | Qt::WindowMaximizeButtonHint); |
94 | m_mdiSubWindow->move(ax: 10,ay: 10); |
95 | m_mdiSubWindow->showMaximized(); |
96 | } |
97 | |
98 | const Qt::WindowStates state = m_mdiSubWindow->windowState(); |
99 | if (state & Qt::WindowMinimized) |
100 | m_mdiSubWindow->setWindowState(state & ~Qt::WindowMinimized); |
101 | |
102 | return m_mdiSubWindow; |
103 | } |
104 | } |
105 | |
106 | QT_END_NAMESPACE |
107 | |