void KisCoordinatesConverterTest::testRotation()
{
KisImageSP image;
KisCoordinatesConverter converter;
initImage(&image, &converter);
QSize widgetSize(1000,500);
QRectF testRect(800, 100, 300, 300);
converter.setImage(image);
converter.setDocumentOffset(QPoint(0,0));
converter.setCanvasWidgetSize(widgetSize);
converter.rotate(converter.widgetCenterPoint(), 30);
converter.setZoom(1.);
QTransform viewportToWidget = converter.viewportToWidgetTransform();
QRectF boundingRect = viewportToWidget.mapRect(testRect);
QRectF directRect = converter.viewportToWidget(testRect);
QCOMPARE(boundingRect, directRect);
QRectF referenceRect(QPointF(742.82,53.5898), QSizeF(409.808,409.808));
#define FUZZY(a,b) ((a)-(b) < 0.01)
QVERIFY(FUZZY(boundingRect.top(), referenceRect.top()));
QVERIFY(FUZZY(boundingRect.left(), referenceRect.left()));
QVERIFY(FUZZY(boundingRect.width(), referenceRect.width()));
QVERIFY(FUZZY(boundingRect.height(), referenceRect.height()));
}
void KisCoordinatesConverterTest::testConsistency()
{
KisImageSP image;
KisCoordinatesConverter converter;
initImage(&image, &converter);
converter.setImage(image);
converter.setDocumentOffset(QPoint(20,30));
converter.setCanvasWidgetSize(QSize(500,500));
QRectF testRect(100,100,100,100);
QTransform imageToWidget;
QTransform documentToWidget;
QTransform viewportToWidget;
converter.setZoom(0.5);
imageToWidget = converter.imageToWidgetTransform();
documentToWidget = converter.documentToWidgetTransform();
viewportToWidget = converter.viewportToWidgetTransform();
QRectF fromImage = converter.viewportToWidget(converter.imageToViewport(testRect));
QRectF fromDocument = converter.documentToWidget(testRect);
QRectF fromViewport = converter.viewportToWidget(testRect);
CHECK_TRANSFORM(imageToWidget, testRect, fromImage);
CHECK_TRANSFORM(documentToWidget, testRect, fromDocument);
CHECK_TRANSFORM(viewportToWidget, testRect, fromViewport);
}
void KisCoordinatesConverterTest::testTransformations()
{
KisImageSP image;
KisCoordinatesConverter converter;
initImage(&image, &converter);
converter.setImage(image);
converter.setDocumentOffset(QPoint(20,30));
converter.setCanvasWidgetSize(QSize(500,500));
QRectF testRect(100,100,100,100);
QTransform imageToWidget;
QTransform documentToWidget;
QTransform flakeToWidget;
QTransform viewportToWidget;
converter.setZoom(1.);
imageToWidget = converter.imageToWidgetTransform();
documentToWidget = converter.documentToWidgetTransform();
flakeToWidget = converter.flakeToWidgetTransform();
viewportToWidget = converter.viewportToWidgetTransform();
CHECK_TRANSFORM(imageToWidget, testRect, QRectF(80,70,100,100));
CHECK_TRANSFORM(documentToWidget, testRect, QRectF(9980,9970,10000,10000));
CHECK_TRANSFORM(flakeToWidget, testRect, QRectF(80,70,100,100));
CHECK_TRANSFORM(viewportToWidget, testRect, QRectF(100,100,100,100));
converter.setZoom(0.5);
imageToWidget = converter.imageToWidgetTransform();
documentToWidget = converter.documentToWidgetTransform();
flakeToWidget = converter.flakeToWidgetTransform();
viewportToWidget = converter.viewportToWidgetTransform();
CHECK_TRANSFORM(imageToWidget, testRect, QRectF(30,20,50,50));
CHECK_TRANSFORM(documentToWidget, testRect, QRectF(4980,4970,5000,5000));
CHECK_TRANSFORM(flakeToWidget, testRect, QRectF(80,70,100,100));
CHECK_TRANSFORM(viewportToWidget, testRect, QRectF(100,100,100,100));
}
void KisQPainterCanvas::paintEvent(QPaintEvent * ev)
{
KisImageWSP image = canvas()->image();
if (image == 0) return;
setAutoFillBackground(false);
if (m_buffer.size() != size()) {
m_buffer = QImage(size(), QImage::Format_ARGB32_Premultiplied);
}
QPainter gc(&m_buffer);
// we double buffer, so we paint on an image first, then from the image onto the canvas,
// so copy the clip region since otherwise we're filling the whole buffer every time with
// the background color _and_ the transparent squares.
gc.setClipRegion(ev->region());
KisCoordinatesConverter *converter = coordinatesConverter();
QTransform imageTransform = converter->viewportToWidgetTransform();
gc.save();
gc.setCompositionMode(QPainter::CompositionMode_Source);
gc.fillRect(QRect(QPoint(0, 0), size()), borderColor());
QTransform checkersTransform;
QPointF brushOrigin;
QPolygonF polygon;
converter->getQPainterCheckersInfo(&checkersTransform, &brushOrigin, &polygon);
gc.setPen(Qt::NoPen);
gc.setBrush(m_d->checkBrush);
gc.setBrushOrigin(brushOrigin);
gc.setTransform(checkersTransform);
gc.drawPolygon(polygon);
gc.setTransform(imageTransform);
gc.setRenderHint(QPainter::SmoothPixmapTransform, true);
QRectF viewportRect = converter->widgetToViewport(ev->rect());
gc.setCompositionMode(QPainter::CompositionMode_SourceOver);
gc.drawImage(viewportRect, m_d->prescaledProjection->prescaledQImage(),
viewportRect);
gc.restore();
#ifdef DEBUG_REPAINT
QColor color = QColor(random() % 255, random() % 255, random() % 255, 150);
gc.fillRect(ev->rect(), color);
#endif
drawDecorations(gc, ev->rect());
gc.end();
QPainter painter(this);
painter.drawImage(ev->rect(), m_buffer, ev->rect());
}