SarasasChipWorkshop/sarasacw-picture
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add checkerboard support

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This commit is contained in:
Gary Wang
2019-09-30 23:02:44 +08:00
parent 89c21bc90b
commit 5067c04b91
7 changed files with 172 additions and 10 deletions
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49
graphicsview.cpp
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@@ -18,31 +18,35 @@ GraphicsView::GraphicsView(QWidget *parent)
setStyleSheet("background-color: rgba(0, 0, 0, 220);"
"border-radius: 3px;");
setAcceptDrops(true);
setCheckerboardEnabled(false);
}
void GraphicsView::showImage(const QPixmap &pixmap)
{
resetTransform();
scene()->showImage(pixmap);
if (!isThingSmallerThanWindowWith(transform())) {
m_enableFitInView = true;
fitInView(sceneRect(), Qt::KeepAspectRatio);
}
checkAndDoFitInView();
}
void GraphicsView::showText(const QString &text)
{
resetTransform();
scene()->showText(text);
checkAndDoFitInView();
}
void GraphicsView::showSvg(const QString &filepath)
{
resetTransform();
scene()->showSvg(filepath);
checkAndDoFitInView();
}
void GraphicsView::showGif(const QString &filepath)
{
resetTransform();
scene()->showGif(filepath);
checkAndDoFitInView();
}
GraphicsScene *GraphicsView::scene() const
@@ -55,6 +59,11 @@ void GraphicsView::setScene(GraphicsScene *scene)
return QGraphicsView::setScene(scene);
}
void GraphicsView::toggleCheckerboard()
{
setCheckerboardEnabled(!m_checkerboardEnabled);
}
void GraphicsView::mousePressEvent(QMouseEvent *event)
{
if (shouldIgnoreMousePressMoveEvent(event)) {
@@ -138,6 +147,11 @@ void GraphicsView::dropEvent(QDropEvent *event)
const QMimeData * mimeData = event->mimeData();
if (mimeData->hasUrls()) {
if (mimeData->urls().isEmpty()) {
// yeah, it's possible. dragging QQ's original sticker will trigger this, for example.
showText("File url list is empty");
return;
}
QUrl url(mimeData->urls().first());
QString filePath(url.toLocalFile());
@@ -188,3 +202,30 @@ bool GraphicsView::shouldIgnoreMousePressMoveEvent(const QMouseEvent *event) con
return false;
}
void GraphicsView::checkAndDoFitInView()
{
if (!isThingSmallerThanWindowWith(transform())) {
m_enableFitInView = true;
fitInView(sceneRect(), Qt::KeepAspectRatio);
}
}
void GraphicsView::setCheckerboardEnabled(bool enabled)
{
m_checkerboardEnabled = enabled;
if (m_checkerboardEnabled) {
// Prepare background check-board pattern
QPixmap tilePixmap(0x20, 0x20);
tilePixmap.fill(QColor(30, 30, 30, 100));
QPainter tilePainter(&tilePixmap);
QColor color(40, 40, 40, 100);
tilePainter.fillRect(0, 0, 0x10, 0x10, color);
tilePainter.fillRect(0x10, 0x10, 0x10, 0x10, color);
tilePainter.end();
setBackgroundBrush(tilePixmap);
} else {
setBackgroundBrush(Qt::transparent);
}
}