1 | // Copyright (C) 2016 The Qt Company Ltd. |
2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
3 | |
4 | #ifndef QQUICKTEXTUTIL_P_H |
5 | #define QQUICKTEXTUTIL_P_H |
6 | |
7 | // |
8 | // W A R N I N G |
9 | // ------------- |
10 | // |
11 | // This file is not part of the Qt API. It exists purely as an |
12 | // implementation detail. This header file may change from version to |
13 | // version without notice, or even be removed. |
14 | // |
15 | // We mean it. |
16 | // |
17 | |
18 | #include <QtQml/qqml.h> |
19 | #include <QtQml/qqmlincubator.h> |
20 | #include <QtQuick/qquickitem.h> |
21 | #include <QtQuick/qquickwindow.h> |
22 | #include <QtCore/private/qglobal_p.h> |
23 | |
24 | QT_BEGIN_NAMESPACE |
25 | |
26 | class QQuickTextUtil : public QObject // For the benefit of translations. |
27 | { |
28 | Q_OBJECT |
29 | public: |
30 | template <typename Private> static void setCursorDelegate(Private *d, QQmlComponent *delegate); |
31 | template <typename Private> static void createCursor(Private *d); |
32 | |
33 | template <typename T> static typename T::RenderType textRenderType(); |
34 | |
35 | static qreal alignedX(qreal textWidth, qreal itemWidth, int alignment); |
36 | static qreal alignedY(qreal textHeight, qreal itemHeight, int alignment); |
37 | |
38 | private: |
39 | static QQuickItem *createCursor( |
40 | QQmlComponent *component, |
41 | QQuickItem *parent, |
42 | const QRectF &cursorRectangle, |
43 | const char *className); |
44 | |
45 | }; |
46 | |
47 | template <typename Private> |
48 | void QQuickTextUtil::setCursorDelegate(Private *d, QQmlComponent *delegate) |
49 | { |
50 | if (d->cursorComponent == delegate) |
51 | return; |
52 | |
53 | typename Private::Public *parent = d->q_func(); |
54 | |
55 | if (d->cursorComponent) { |
56 | disconnect(d->cursorComponent, SIGNAL(statusChanged(QQmlComponent::Status)), |
57 | parent, SLOT(createCursor())); |
58 | } |
59 | |
60 | delete d->cursorItem; |
61 | d->cursorItem = 0; |
62 | d->cursorPending = true; |
63 | |
64 | d->cursorComponent = delegate; |
65 | |
66 | if (parent->isCursorVisible() && parent->isComponentComplete()) |
67 | createCursor(d); |
68 | |
69 | Q_EMIT parent->cursorDelegateChanged(); |
70 | } |
71 | |
72 | template <typename Private> |
73 | void QQuickTextUtil::createCursor(Private *d) |
74 | { |
75 | if (!d->cursorPending) |
76 | return; |
77 | |
78 | d->cursorPending = false; |
79 | |
80 | typename Private::Public *parent = d->q_func(); |
81 | if (d->cursorComponent) { |
82 | d->cursorItem = createCursor( |
83 | d->cursorComponent, |
84 | parent, |
85 | parent->cursorRectangle(), |
86 | Private::Public::staticMetaObject.className()); |
87 | } |
88 | |
89 | d->setNativeCursorEnabled(!d->cursorItem); |
90 | d->updateType = Private::UpdatePaintNode; |
91 | parent->update(); |
92 | } |
93 | |
94 | template <typename T> |
95 | typename T::RenderType QQuickTextUtil::textRenderType() |
96 | { |
97 | switch (QQuickWindow::textRenderType()) { |
98 | case QQuickWindow::QtTextRendering: |
99 | return T::QtRendering; |
100 | case QQuickWindow::NativeTextRendering: |
101 | return T::NativeRendering; |
102 | } |
103 | |
104 | Q_UNREACHABLE_RETURN(T::QtRendering); |
105 | } |
106 | |
107 | QT_END_NAMESPACE |
108 | |
109 | #endif |
110 | |