void KisCoordinatesConverter::getQPainterCheckersInfo(QTransform *transform,
QPointF *brushOrigin,
QPolygonF *polygon) const
{
/**
* Qt has different rounding for QPainter::drawRect/drawImage.
* The image is rounded mathematically, while rect in aligned
* to the next integer. That causes transparent line appear on
* the canvas.
*
* See: https://bugreports.qt.nokia.com/browse/QTBUG-22827
*/
QRectF imageRect = imageRectInViewportPixels();
imageRect.adjust(0,0,-0.5,-0.5);
KisConfig cfg;
if (cfg.scrollCheckers()) {
*transform = viewportToWidgetTransform();
*polygon = imageRect;
*brushOrigin = imageToViewport(QPointF(0,0));
}
else {
*transform = QTransform();
*polygon = viewportToWidgetTransform().map(imageRect);
*brushOrigin = QPoint(0,0);
}
}
void KisOpenGLCanvas2::slotConfigChanged()
{
KisConfig cfg;
d->checkSizeScale = KisOpenGLImageTextures::BACKGROUND_TEXTURE_CHECK_SIZE / static_cast<GLfloat>(cfg.checkSize());
d->scrollCheckers = cfg.scrollCheckers();
d->openGLImageTextures->generateCheckerTexture(createCheckersImage(cfg.checkSize()));
d->openGLImageTextures->updateConfig(cfg.useOpenGLTextureBuffer(), cfg.numMipmapLevels());
d->filterMode = (KisOpenGL::FilterMode) cfg.openGLFilteringMode();
notifyConfigChanged();
}
void KisCoordinatesConverter::getOpenGLCheckersInfo(const QRectF &viewportRect,
QTransform *textureTransform,
QTransform *modelTransform,
QRectF *textureRect,
QRectF *modelRect) const
{
KisConfig cfg;
if(cfg.scrollCheckers()) {
*textureTransform = QTransform();
*textureRect = QRectF(0, 0, viewportRect.width(),viewportRect.height());
}
else {
*textureTransform = viewportToWidgetTransform();
*textureRect = viewportRect;
}
*modelTransform = viewportToWidgetTransform();
*modelRect = viewportRect;
}