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Magnifier!

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Stolen from ShareX.

Jaex didn't say I can't!
This commit is contained in:
ArsenArsen 2017-06-27 00:02:27 +02:00
parent 1c6fddca62
commit b8880b1c03
3 changed files with 66 additions and 1 deletions
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60
cropeditor/cropscene.cpp
View File

@ -57,6 +57,35 @@ CropScene::CropScene(QObject *parent, QPixmap *pixmap)
connect(settings, &QAction::triggered, [&] { BrushPenSelection(this).exec(); });
menu.addAction(settings);
magnifier = addPixmap(pixmap->copy(0, 0, 11, 11).scaled(110, 110));
magnifierBox = addRect(magnifier->boundingRect(), QPen(Qt::cyan));
magnifier->setZValue(1);
magnifierBox->setZValue(1.1);
magnifierBox->setParentItem(magnifier);
magnifierHint = addText("ptr: (0, 0)\nsel: (0, 0, 0, 0)");
magnifierHint->setParentItem(magnifier);
magnifierHint->setY(magnifier->boundingRect().height());
QColor c(Qt::cyan);
c.setAlphaF(.25);
magnifierHintBox = addRect(magnifierHint->boundingRect(), Qt::NoPen, c);
magnifierHintBox->setParentItem(magnifierHint);
magnifierHintBox->setZValue(1);
magnifierHint->setZValue(1.1);
for (int i = 0; i < 11; i++) {
auto gridRectX = addRect(0, i * 10, 110, 10, QPen(Qt::black));
auto gridRectY = addRect(i * 10, 0, 10, 110, QPen(Qt::black));
gridRectX->setParentItem(magnifierBox);
gridRectY->setParentItem(magnifierBox);
gridRectX->setZValue(1);
gridRectY->setZValue(1);
gridRectsX.append(gridRectX);
gridRectsY.append(gridRectY);
if (i == 5) {
gridRectX->setBrush(c);
gridRectY->setBrush(c);
}
}
connect(menu.addAction("Set Font"), &QAction::triggered, this, &CropScene::fontAsk);
_pixmap = pixmap;
@ -105,6 +134,31 @@ void CropScene::fontAsk() {
}
void CropScene::mouseMoveEvent(QGraphicsSceneMouseEvent *e) {
QString rectStr("(0, 0, 0, 0)");
if (rect) {
rectStr = "(%0, %1, %2, %3)";
rectStr = rectStr.arg(rect->rect().x()).arg(rect->rect().y()).arg(rect->rect().width()).arg(rect->rect().height());
}
magnifierHint->setPlainText(QString("ptr: (%0, %1)\nsel: %2").arg(e->scenePos().x()).arg(e->scenePos().y()).arg(rectStr));
magnifierHintBox->setRect(magnifierHint->boundingRect());
QPointF magnifierTopLeft = e->scenePos() - QPointF(5.5, 5.5);
QPointF magnifierPos = e->scenePos() + QPointF(11, 11);
magnifier->setPos(magnifierPos);
magnifier->setPixmap(_pixmap->copy(magnifierTopLeft.x(), magnifierTopLeft.y(), 11, 11).scaled(110, 110));
QPointF bottomRight = magnifierHintBox->sceneBoundingRect().bottomRight();
if (magnifier->sceneBoundingRect().bottom() > bottomRight.y())
bottomRight.setY(magnifier->sceneBoundingRect().bottom());
if (magnifier->sceneBoundingRect().right() > bottomRight.x())
bottomRight.setX(magnifier->sceneBoundingRect().right());
if (bottomRight.x() > sceneRect().right())
magnifierPos -= QPointF(qMax(130., magnifierHintBox->boundingRect().width()), 0);
if (bottomRight.y() > sceneRect().bottom())
magnifierPos -= QPointF(0, 130 + magnifierHintBox->boundingRect().height());
magnifier->setPos(magnifierPos);
auto buttons = e->buttons();
if (e->modifiers() & Qt::ControlModifier && buttons == Qt::LeftButton) {
QTransform stupidThing = views()[0]->transform();
@ -115,7 +169,7 @@ void CropScene::mouseMoveEvent(QGraphicsSceneMouseEvent *e) {
}
return;
}
if (buttons == Qt::LeftButton || prevButtons == Qt::NoButton) {
if (buttons == Qt::LeftButton || (prevButtons == Qt::NoButton && prevButtons != buttons)) {
if (drawingSelection) {
drawingSelection->mouseDragEvent(e, this);
} else {
@ -190,6 +244,10 @@ void CropScene::keyReleaseEvent(QKeyEvent *event) {
void CropScene::done() {
if (rect) {
rect->setPen(QPen(Qt::NoPen));
magnifier->setVisible(false);
magnifierBox->setVisible(false);
magnifierHint->setVisible(false);
magnifierHintBox->setVisible(false);
emit closedWithRect(rect->rect().toRect());
}
}

6
cropeditor/cropscene.hpp
View File

@ -52,6 +52,10 @@ private:
QFlags<Qt::MouseButton> prevButtons;
QPixmap *_pixmap;
QGraphicsRectItem *rect = nullptr;
QGraphicsPixmapItem *magnifier = nullptr;
QGraphicsRectItem *magnifierBox = nullptr;
QGraphicsTextItem *magnifierHint = nullptr;
QGraphicsRectItem *magnifierHintBox = nullptr;
QPointF initPos;
QPen _pen;
QBrush _brush;
@ -61,6 +65,8 @@ private:
QMenu menu;
QString drawingName = "None";
QAction *display;
QList<QGraphicsRectItem *> gridRectsX;
QList<QGraphicsRectItem *> gridRectsY;
};
#endif // CROPSCENE_HPP

1
cropeditor/cropview.cpp
View File

@ -7,6 +7,7 @@ CropView::CropView(QGraphicsScene *scene) : QGraphicsView(scene) {
setWindowFlags(windowFlags() | Qt::FramelessWindowHint | Qt::WindowStaysOnTopHint);
setRenderHints(QPainter::Antialiasing | QPainter::SmoothPixmapTransform | QPainter::HighQualityAntialiasing);
setCursor(QCursor(Qt::CrossCursor));
setMouseTracking(true);
}
void CropView::keyPressEvent(QKeyEvent *e) {