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 test suite of the Qt Toolkit. |
7 | ** |
8 | ** $QT_BEGIN_LICENSE:GPL-EXCEPT$ |
9 | ** Commercial License Usage |
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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 |
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24 | ** |
25 | ** $QT_END_LICENSE$ |
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27 | ****************************************************************************/ |
28 | |
29 | #include <qwindow.h> |
30 | #include <qbackingstore.h> |
31 | #include <qpainter.h> |
32 | |
33 | #include <QtTest/QtTest> |
34 | |
35 | #include <QEvent> |
36 | |
37 | // For QSignalSpy slot connections. |
38 | Q_DECLARE_METATYPE(Qt::ScreenOrientation) |
39 | |
40 | class tst_QBackingStore : public QObject |
41 | { |
42 | Q_OBJECT |
43 | |
44 | private slots: |
45 | void flush(); |
46 | |
47 | void scrollRectInImage_data(); |
48 | void scrollRectInImage(); |
49 | }; |
50 | |
51 | void tst_QBackingStore::scrollRectInImage_data() |
52 | { |
53 | QTest::addColumn<QRect>(name: "rect" ); |
54 | QTest::addColumn<QPoint>(name: "offset" ); |
55 | |
56 | QTest::newRow(dataTag: "empty rect" ) << QRect() << QPoint(); |
57 | QTest::newRow(dataTag: "rect outside image" ) << QRect(-100, -100, 1000, 1000) << QPoint(10, 10); |
58 | QTest::newRow(dataTag: "scroll outside positive" ) << QRect(10, 10, 10, 10) << QPoint(1000, 1000); |
59 | QTest::newRow(dataTag: "scroll outside negative" ) << QRect(10, 10, 10, 10) << QPoint(-1000, -1000); |
60 | |
61 | QTest::newRow(dataTag: "sub-rect positive scroll" ) << QRect(100, 100, 50, 50) << QPoint(10, 10); |
62 | QTest::newRow(dataTag: "sub-rect negative scroll" ) << QRect(100, 100, 50, 50) << QPoint(-10, -10); |
63 | |
64 | QTest::newRow(dataTag: "positive vertical only" ) << QRect(100, 100, 50, 50) << QPoint(0, 10); |
65 | QTest::newRow(dataTag: "negative vertical only" ) << QRect(100, 100, 50, 50) << QPoint(0, -10); |
66 | QTest::newRow(dataTag: "positive horizontal only" ) << QRect(100, 100, 50, 50) << QPoint(10, 0); |
67 | QTest::newRow(dataTag: "negative horizontal only" ) << QRect(100, 100, 50, 50) << QPoint(-10, 0); |
68 | |
69 | QTest::newRow(dataTag: "whole rect positive" ) << QRect(0, 0, 250, 250) << QPoint(10, 10); |
70 | QTest::newRow(dataTag: "whole rect negative" ) << QRect(0, 0, 250, 250) << QPoint(-10, -10); |
71 | } |
72 | |
73 | QT_BEGIN_NAMESPACE |
74 | Q_GUI_EXPORT void qt_scrollRectInImage(QImage &, const QRect &, const QPoint &); |
75 | QT_END_NAMESPACE |
76 | |
77 | void tst_QBackingStore::scrollRectInImage() |
78 | { |
79 | QImage test(250, 250, QImage::Format_ARGB32_Premultiplied); |
80 | |
81 | QFETCH(QRect, rect); |
82 | QFETCH(QPoint, offset); |
83 | |
84 | qt_scrollRectInImage(test, rect, offset); |
85 | } |
86 | |
87 | class Window : public QWindow |
88 | { |
89 | public: |
90 | Window() |
91 | : backingStore(this) |
92 | { |
93 | } |
94 | |
95 | void resizeEvent(QResizeEvent *) |
96 | { |
97 | backingStore.resize(size: size()); |
98 | } |
99 | |
100 | void exposeEvent(QExposeEvent *event) |
101 | { |
102 | QRect rect(QPoint(), size()); |
103 | |
104 | backingStore.beginPaint(rect); |
105 | |
106 | QPainter p(backingStore.paintDevice()); |
107 | p.fillRect(r: rect, c: Qt::white); |
108 | p.end(); |
109 | |
110 | backingStore.endPaint(); |
111 | |
112 | backingStore.flush(region: event->region().boundingRect()); |
113 | } |
114 | |
115 | private: |
116 | QBackingStore backingStore; |
117 | }; |
118 | |
119 | void tst_QBackingStore::flush() |
120 | { |
121 | Window window; |
122 | window.setGeometry(posx: 20, posy: 20, w: 200, h: 200); |
123 | window.showMaximized(); |
124 | |
125 | QTRY_VERIFY(window.isExposed()); |
126 | } |
127 | |
128 | #include <tst_qbackingstore.moc> |
129 | QTEST_MAIN(tst_QBackingStore); |
130 | |