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Expand tst_QBackingStore auto test

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Pick-to: 6.3 6.2
Change-Id: Ife6a175867cfc97c2c112d7c1bac606bc6798e98
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>
This commit is contained in:
Tor Arne Vestbø 2021-09-30 13:07:32 +02:00
parent 999d856bc8
commit 588f956f78
1 changed files with 168 additions and 1 deletions
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169
tests/auto/gui/kernel/qbackingstore/tst_qbackingstore.cpp
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@ -28,6 +28,7 @@
#include <qwindow.h>
#include <qbackingstore.h>
#include <qpa/qplatformbackingstore.h>
#include <qpainter.h>
#include <QTest>
@ -42,12 +43,103 @@ class tst_QBackingStore : public QObject
Q_OBJECT
private slots:
void flush();
void initTestCase_data();
void init();
void resize();
void paint();
void scrollRectInImage_data();
void scrollRectInImage();
void scroll();
void flush();
};
void tst_QBackingStore::initTestCase_data()
{
QTest::addColumn<QSurfaceFormat::SwapBehavior>("swapBehavior");
QTest::newRow("single-buffer") << QSurfaceFormat::SingleBuffer;
QTest::newRow("double-buffer") << QSurfaceFormat::DoubleBuffer;
}
void tst_QBackingStore::init()
{
QFETCH_GLOBAL(QSurfaceFormat::SwapBehavior, swapBehavior);
QSurfaceFormat defaultFormat = QSurfaceFormat::defaultFormat();
defaultFormat.setSwapBehavior(swapBehavior);
QSurfaceFormat::setDefaultFormat(defaultFormat);
}
void tst_QBackingStore::resize()
{
QWindow window;
window.create();
QBackingStore backingStore(&window);
QRect rect(0, 0, 100, 100);
backingStore.resize(rect.size());
QCOMPARE(backingStore.size(), rect.size());
// The paint device should reflect the requested
// size, taking the window's DPR into account.
backingStore.beginPaint(rect);
auto paintDevice = backingStore.paintDevice();
QCOMPARE(paintDevice->devicePixelRatio(), window.devicePixelRatio());
QCOMPARE(QSize(paintDevice->width(), paintDevice->height()),
rect.size() * window.devicePixelRatio());
backingStore.endPaint();
// So should the platform backingstore when accessed as an QImage
QImage image = backingStore.handle()->toImage();
if (!image.isNull()) // toImage might not be implemented
QCOMPARE(image.size(), rect.size() * window.devicePixelRatio());
}
void tst_QBackingStore::paint()
{
QWindow window;
window.create();
// The resize() test verifies that the backingstore image
// has a size that takes the window's DPR into account.
auto dpr = window.devicePixelRatio();
QBackingStore backingStore(&window);
QRect rect(0, 0, 100, 100);
backingStore.resize(rect.size());
// Two rounds, with flush in between
for (int i = 0; i < 2; ++i) {
backingStore.beginPaint(rect);
QPainter p(backingStore.paintDevice());
QColor bgColor = i ? Qt::red : Qt::blue;
QColor fgColor = i ? Qt::green : Qt::yellow;
p.fillRect(rect, bgColor);
p.fillRect(QRect(50, 50, 10, 10), fgColor);
p.end();
backingStore.endPaint();
QImage image = backingStore.handle()->toImage();
if (image.isNull())
QSKIP("Platform backingstore does not implement toImage");
QCOMPARE(image.pixelColor(50 * dpr, 50 * dpr), fgColor);
QCOMPARE(image.pixelColor(49 * dpr, 50 * dpr), bgColor);
QCOMPARE(image.pixelColor(50 * dpr, 49 * dpr), bgColor);
QCOMPARE(image.pixelColor(59 * dpr, 59 * dpr), fgColor);
QCOMPARE(image.pixelColor(60 * dpr, 59 * dpr), bgColor);
QCOMPARE(image.pixelColor(59 * dpr, 60 * dpr), bgColor);
backingStore.flush(rect);
}
}
void tst_QBackingStore::scrollRectInImage_data()
{
QTest::addColumn<QRect>("rect");
@ -84,6 +176,81 @@ void tst_QBackingStore::scrollRectInImage()
qt_scrollRectInImage(test, rect, offset);
}
void tst_QBackingStore::scroll()
{
QWindow window;
window.create();
// The resize() test verifies that the backingstore image
// has a size that takes the window's DPR into account.
auto dpr = window.devicePixelRatio();
QBackingStore backingStore(&window);
QRect rect(0, 0, 100, 100);
// Scrolling a backingstore without a size shouldn't crash
backingStore.scroll(rect, 10, 10);
backingStore.scroll(rect, -10, -10);
backingStore.resize(rect.size());
// Scrolling a backingstore without painting to it shouldn't crash
backingStore.scroll(rect, 10, 10);
backingStore.scroll(rect, -10, -10);
// Two rounds, with flush in between
for (int i = 0; i < 2; ++i) {
backingStore.beginPaint(rect);
QPainter p(backingStore.paintDevice());
QColor bgColor = i ? Qt::red : Qt::blue;
QColor fgColor = i ? Qt::green : Qt::yellow;
p.fillRect(rect, bgColor);
p.fillRect(QRect(50, 50, 10, 10), fgColor);
p.end();
backingStore.endPaint();
QImage image = backingStore.handle()->toImage();
if (image.isNull())
QSKIP("Platform backingstore does not implement toImage");
QCOMPARE(image.pixelColor(50 * dpr, 50 * dpr), fgColor);
QCOMPARE(image.pixelColor(49 * dpr, 50 * dpr), bgColor);
QCOMPARE(image.pixelColor(50 * dpr, 49 * dpr), bgColor);
QCOMPARE(image.pixelColor(59 * dpr, 59 * dpr), fgColor);
QCOMPARE(image.pixelColor(60 * dpr, 59 * dpr), bgColor);
QCOMPARE(image.pixelColor(59 * dpr, 60 * dpr), bgColor);
image = {};
bool supportsScroll = backingStore.scroll(QRect(52, 52, 6, 6), -12, -12);
if (!supportsScroll)
QSKIP("Platform backingstore does not support scrolling");
image = backingStore.handle()->toImage();
QCOMPARE(image.pixelColor(40 * dpr, 40 * dpr), fgColor);
QCOMPARE(image.pixelColor(39 * dpr, 40 * dpr), bgColor);
QCOMPARE(image.pixelColor(40 * dpr, 39 * dpr), bgColor);
QCOMPARE(image.pixelColor(45 * dpr, 45 * dpr), fgColor);
QCOMPARE(image.pixelColor(46 * dpr, 45 * dpr), bgColor);
QCOMPARE(image.pixelColor(45 * dpr, 46 * dpr), bgColor);
image = {};
backingStore.flush(rect);
// Scroll again after flush, but before new round of painting
backingStore.scroll(QRect(52, 52, 6, 6), 12, 12);
image = backingStore.handle()->toImage();
QCOMPARE(image.pixelColor(64 * dpr, 64 * dpr), fgColor);
QCOMPARE(image.pixelColor(63 * dpr, 64 * dpr), bgColor);
QCOMPARE(image.pixelColor(64 * dpr, 63 * dpr), bgColor);
QCOMPARE(image.pixelColor(69 * dpr, 69 * dpr), fgColor);
QCOMPARE(image.pixelColor(70 * dpr, 69 * dpr), bgColor);
QCOMPARE(image.pixelColor(69 * dpr, 70 * dpr), bgColor);
image = {};
}
}
class Window : public QWindow
{
public: