KShare/cropeditor/cropscene.cpp

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#include "cropscene.hpp"
#include <QColorDialog>
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#include <QDebug>
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#include <QGraphicsPolygonItem>
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#include <QGraphicsSceneContextMenuEvent>
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#include <QGraphicsView>
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#include <QMenu>
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#include <QTimer>
#include <cropeditor/drawing/dotitem.hpp>
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#include <cropeditor/drawing/lineitem.hpp>
#include <cropeditor/settings/brushpenselection.hpp>
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CropScene::CropScene(QObject *parent) : QGraphicsScene(parent), prevButtons(Qt::NoButton)
{
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QTimer::singleShot(0, [&] {
QPolygonF poly;
poly.append(sceneRect().topLeft());
poly.append(sceneRect().topRight());
poly.append(sceneRect().bottomRight());
poly.append(sceneRect().bottomLeft());
polyItem = new QGraphicsPolygonItem(poly);
polyItem->setBrush(QBrush(QColor(0, 0, 0, 191)));
polyItem->setPen(QPen(Qt::NoPen));
addItem(polyItem);
});
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}
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QPen &CropScene::pen()
{
return _pen;
}
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QBrush &CropScene::brush()
{
return _brush;
}
void CropScene::setDrawingSelection(DrawItem *drawAction)
{
drawingSelection = drawAction;
}
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void CropScene::mouseMoveEvent(QGraphicsSceneMouseEvent *e)
{
auto buttons = e->buttons();
if (buttons == Qt::LeftButton || prevButtons == Qt::NoButton)
{
if (drawingSelection != nullptr)
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{
drawingSelection->mouseDragEvent(e, this);
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}
else
{
QPointF p = e->scenePos();
if (rect == nullptr)
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{
rect = new QGraphicsRectItem(p.x(), p.y(), 1, 1);
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initPos = p;
QPen pen(Qt::NoBrush, 1);
pen.setColor(Qt::cyan);
rect->setPen(pen);
addItem(rect);
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}
else
{
if (prevButtons == Qt::NoButton)
{
initPos = p;
rect->setRect(p.x(), p.y(), 1, 1);
}
else
{
rect->setRect(QRect(qMin(initPos.x(), p.x()), qMin(initPos.y(), p.y()), qAbs(initPos.x() - p.x()),
qAbs(initPos.y() - p.y())));
}
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}
QPolygonF poly;
QPointF theMagicWikipediaPoint(rect->rect().right(), sceneRect().bottom());
poly << sceneRect().topLeft();
poly << sceneRect().topRight();
poly << sceneRect().bottomRight();
poly << theMagicWikipediaPoint;
poly << rect->rect().bottomRight();
poly << rect->rect().topRight();
poly << rect->rect().topLeft();
poly << rect->rect().bottomLeft();
poly << rect->rect().bottomRight();
poly << theMagicWikipediaPoint;
poly << sceneRect().bottomLeft();
poly << sceneRect().topLeft();
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this->polyItem->setPolygon(poly);
e->accept();
}
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}
prevButtons = buttons;
}
void CropScene::mouseReleaseEvent(QGraphicsSceneMouseEvent *e)
{
if (drawingSelection != nullptr)
{
drawingSelection->mouseDragEndEvent(e, this);
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delete drawingSelection;
drawingSelection = nullptr;
}
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prevButtons = Qt::NoButton;
}
void CropScene::keyReleaseEvent(QKeyEvent *event)
{
if (event->key() == Qt::Key_Return || event->key() == Qt::Key_Enter) done();
}
void CropScene::addDrawingAction(QMenu &menu, DrawItem *item)
{
QAction *action = new QAction;
action->setText(item->name());
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QObject::connect(action, &QAction::triggered, [this, item](bool) { setDrawingSelection(item); });
menu.addAction(action);
}
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void CropScene::contextMenuEvent(QGraphicsSceneContextMenuEvent *e)
{
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QMenu menu(e->widget());
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addDrawingAction(menu, new DotItem);
addDrawingAction(menu, new LineItem);
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menu.addSeparator();
QAction *settings = new QAction;
settings->setText("Settings");
connect(settings, &QAction::triggered, [&] { BrushPenSelection(this).exec(); });
menu.addAction(settings);
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menu.exec(e->screenPos());
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e->accept();
}
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void CropScene::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *)
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{
done();
}
void CropScene::done()
{
if (rect)
{
rect->setPen(QPen(Qt::NoPen));
emit closedWithRect(rect->rect().toRect());
}
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}