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feat: fit by width

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Signed-off-by: Gary Wang <wzc782970009@gmail.com>
This commit is contained in:
Gary Wang 2021-05-14 00:00:03 +08:00
parent 69802a433e
commit 038d04b3da
6 changed files with 36 additions and 0 deletions
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2
app/actionmanager.cpp
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@ -24,6 +24,7 @@ void ActionManager::setupAction(MainWindow *mainWindow)
CREATE_NEW_ACTION(mainWindow, actionZoomIn);
CREATE_NEW_ACTION(mainWindow, actionZoomOut);
CREATE_NEW_ACTION(mainWindow, actionHorizontalFlip);
CREATE_NEW_ACTION(mainWindow, actionFitByWidth);
CREATE_NEW_ACTION(mainWindow, actionCopyPixmap);
CREATE_NEW_ACTION(mainWindow, actionCopyFilePath);
CREATE_NEW_ACTION(mainWindow, actionPaste);
@ -47,6 +48,7 @@ void ActionManager::retranslateUi(MainWindow *mainWindow)
actionZoomIn->setText(QCoreApplication::translate("MainWindow", "Zoom in", nullptr));
actionZoomOut->setText(QCoreApplication::translate("MainWindow", "Zoom out", nullptr));
actionHorizontalFlip->setText(QCoreApplication::translate("MainWindow", "Flip &Horizontally", nullptr));
actionFitByWidth->setText("Fit by width"); // TODO: what should it called?
actionCopyPixmap->setText(QCoreApplication::translate("MainWindow", "Copy P&ixmap", nullptr));
actionCopyFilePath->setText(QCoreApplication::translate("MainWindow", "Copy &File Path", nullptr));
actionPaste->setText(QCoreApplication::translate("MainWindow", "&Paste", nullptr));

1
app/actionmanager.h
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@ -19,6 +19,7 @@ public:
QAction *actionZoomIn;
QAction *actionZoomOut;
QAction *actionHorizontalFlip;
QAction *actionFitByWidth;
QAction *actionCopyPixmap;
QAction *actionCopyFilePath;
QAction *actionPaste;

25
app/graphicsview.cpp
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@ -171,6 +171,31 @@ void GraphicsView::fitInView(const QRectF &rect, Qt::AspectRatioMode aspectRadio
applyTransformationModeByScaleFactor();
}
void GraphicsView::fitByOrientation(Qt::Orientation ori, bool scaleDownOnly)
{
resetScale();
QRectF viewRect = this->viewport()->rect().adjusted(2, 2, -2, -2);
QRectF imageRect = transform().mapRect(sceneRect());
qreal ratio;
if (ori == Qt::Horizontal) {
ratio = viewRect.width() / imageRect.width();
} else {
ratio = viewRect.height() / imageRect.height();
}
if (scaleDownOnly && ratio > 1) ratio = 1;
scale(ratio, ratio);
centerOn(imageRect.top(), 0);
m_enableFitInView = false;
applyTransformationModeByScaleFactor();
emit navigatorViewRequired(!isThingSmallerThanWindowWith(transform()), transform());
}
void GraphicsView::checkAndDoFitInView(bool markItOnAnyway)
{
if (!isThingSmallerThanWindowWith(transform())) {

1
app/graphicsview.h
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@ -30,6 +30,7 @@ public:
void flipView(bool horizontal = true);
void resetScale();
void fitInView(const QRectF &rect, Qt::AspectRatioMode aspectRadioMode = Qt::IgnoreAspectRatio);
void fitByOrientation(Qt::Orientation ori = Qt::Horizontal, bool scaleDownOnly = false);
void checkAndDoFitInView(bool markItOnAnyway = true);

6
app/mainwindow.cpp
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@ -421,6 +421,7 @@ void MainWindow::contextMenuEvent(QContextMenuEvent *event)
menu->addSeparator();
menu->addAction(m_am->actionHorizontalFlip);
menu->addAction(m_am->actionFitByWidth);
menu->addSeparator();
menu->addAction(stayOnTopMode);
@ -561,6 +562,11 @@ void MainWindow::on_actionHorizontalFlip_triggered()
m_graphicsView->flipView();
}
void MainWindow::on_actionFitByWidth_triggered()
{
m_graphicsView->fitByOrientation();
}
void MainWindow::on_actionCopyPixmap_triggered()
{
QClipboard *cb = QApplication::clipboard();

1
app/mainwindow.h
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@ -66,6 +66,7 @@ private slots:
void on_actionZoomIn_triggered();
void on_actionZoomOut_triggered();
void on_actionHorizontalFlip_triggered();
void on_actionFitByWidth_triggered();
void on_actionCopyPixmap_triggered();
void on_actionCopyFilePath_triggered();
void on_actionPaste_triggered();