302 lines
12 KiB
C++
302 lines
12 KiB
C++
#include "cropscene.hpp"
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#include <QColorDialog>
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#include <QDebug>
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#include <QFontDialog>
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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>
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#include <cropeditor/drawing/arrowitem.hpp>
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#include <cropeditor/drawing/bluritem.hpp>
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#include <cropeditor/drawing/dotitem.hpp>
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#include <cropeditor/drawing/ellipseitem.hpp>
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#include <cropeditor/drawing/eraseritem.hpp>
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#include <cropeditor/drawing/lineitem.hpp>
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#include <cropeditor/drawing/pathitem.hpp>
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#include <cropeditor/drawing/rectitem.hpp>
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#include <cropeditor/drawing/textitem.hpp>
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#include <cropeditor/settings/brushpenselection.hpp>
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#include <functional>
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#include <settings.hpp>
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CropScene::CropScene(QObject *parent, QPixmap *pixmap)
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: QGraphicsScene(parent), drawingSelectionMaker([] { return nullptr; }), prevButtons(Qt::NoButton),
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_brush(Qt::SolidPattern), _font(settings::settings().value("font", QFont()).value<QFont>()) {
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_pixmap = pixmap;
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pen().setColor(settings::settings().value("penColor", pen().color()).value<QColor>());
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pen().setCosmetic(settings::settings().value("penCosmetic", pen().isCosmetic()).toBool());
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pen().setWidthF(settings::settings().value("penWidth", pen().widthF()).toFloat());
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brush().setColor(settings::settings().value("brushColor", brush().color()).value<QColor>());
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brush().setStyle((Qt::BrushStyle)settings::settings().value("brushStyle", (int)Qt::SolidPattern).toInt());
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addDrawingAction(menu, "Dot", [] { return new DotItem; });
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addDrawingAction(menu, "Path", [] { return new PathItem; });
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addDrawingAction(menu, "Blur", [] { return new BlurItem; });
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addDrawingAction(menu, "Straight line", [] { return new LineItem; });
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addDrawingAction(menu, "Text", [] { return new TextItem; });
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addDrawingAction(menu, "Rectangle", [] { return new RectItem; });
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addDrawingAction(menu, "Ellipse", [] { return new EllipseItem; });
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addDrawingAction(menu, "Arrow", [] { return new ArrowItem; });
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menu.addSeparator();
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addDrawingAction(menu, "Eraser", [] { return new EraserItem; });
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QAction *clear = menu.addAction("Clear all drawing");
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connect(clear, &QAction::triggered, [&] {
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auto its = items();
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for (auto i : its) {
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if (i != rect && i != polyItem && i->zValue() != -1) removeItem(i);
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}
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});
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QAction *reset = menu.addAction("Reset pen selection");
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connect(reset, &QAction::triggered, [&] { setDrawingSelection("None", [] { return nullptr; }); });
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menu.addSeparator();
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QAction *settings = new QAction;
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settings->setText("Settings");
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menu.addSeparator();
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display = menu.addAction(drawingName);
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display->setDisabled(true);
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connect(settings, &QAction::triggered, [&] { BrushPenSelection(this).exec(); });
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menu.addAction(settings);
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magnifier = addPixmap(pixmap->copy(0, 0, 11, 11).scaled(110, 110));
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magnifierBox = addRect(magnifier->boundingRect(), QPen(Qt::cyan));
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magnifier->setZValue(1);
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magnifierBox->setZValue(1.1);
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magnifierBox->setParentItem(magnifier);
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magnifierHint = addText("ptr: (0, 0)\nsel: (0, 0, 0, 0)");
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magnifierHint->setParentItem(magnifier);
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magnifierHint->setY(magnifier->boundingRect().height());
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QColor c(Qt::cyan);
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c.setAlphaF(.25);
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magnifierHintBox = addRect(magnifierHint->boundingRect(), Qt::NoPen, c);
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magnifierHintBox->setParentItem(magnifierHint);
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magnifierHintBox->setZValue(1);
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magnifierHint->setZValue(1.1);
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initMagnifierGrid();
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updateMag(QPointF(0, 0));
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connect(menu.addAction("Set Font"), &QAction::triggered, this, &CropScene::fontAsk);
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QTimer::singleShot(0, [&] {
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QPolygonF poly;
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poly.append(sceneRect().topLeft());
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poly.append(sceneRect().topRight());
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poly.append(sceneRect().bottomRight());
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poly.append(sceneRect().bottomLeft());
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polyItem = new QGraphicsPolygonItem(poly);
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polyItem->setBrush(QBrush(QColor(0, 0, 0, 191)));
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polyItem->setPen(QPen(Qt::NoPen));
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addItem(polyItem);
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});
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}
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CropScene::~CropScene() {
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delete drawingSelection;
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}
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QPen &CropScene::pen() {
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return _pen;
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}
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QBrush &CropScene::brush() {
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return _brush;
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}
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QFont &CropScene::font() {
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return _font;
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}
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void CropScene::setDrawingSelection(QString name, std::function<DrawItem *()> drawAction) {
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this->setFocus();
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drawingSelectionMaker = drawAction;
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drawingSelection = drawAction();
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drawingName = name;
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if (drawingSelection)
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if (!drawingSelection->init(this)) setDrawingSelection("None", [] { return nullptr; });
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}
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void CropScene::fontAsk() {
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bool ok = false;
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QFont font = QFontDialog::getFont(&ok, this->font(), nullptr, "Font to use");
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if (ok) _font = font;
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}
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void CropScene::mouseMoveEvent(QGraphicsSceneMouseEvent *e) {
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updateMag(e->scenePos());
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auto buttons = e->buttons();
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if (e->modifiers() & Qt::ControlModifier && buttons == Qt::LeftButton) {
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QTransform stupidThing = views()[0]->transform();
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auto item = itemAt(e->scenePos(), stupidThing);
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if (item && item != polyItem && item != rect && item->zValue() != -1) {
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QPointF delta = e->scenePos() - e->lastScenePos();
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item->moveBy(delta.x(), delta.y());
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}
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return;
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}
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if (buttons == Qt::LeftButton || (prevButtons == Qt::NoButton && prevButtons != buttons)) {
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if (drawingSelection) {
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drawingSelection->mouseDragEvent(e, this);
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} else {
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QPointF p = e->scenePos();
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if (rect == nullptr) {
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rect = new QGraphicsRectItem(p.x(), p.y(), 1, 1);
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initPos = p;
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QPen pen(Qt::NoBrush, 1);
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pen.setColor(Qt::cyan);
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rect->setPen(pen);
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rect->setZValue(-0.1);
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addItem(rect);
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} else {
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if (prevButtons == Qt::NoButton) {
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initPos = p;
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rect->setRect(p.x(), p.y(), 1, 1);
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} else {
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rect->setRect(QRect(qMin(initPos.x(), p.x()), qMin(initPos.y(), p.y()), qAbs(initPos.x() - p.x()),
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qAbs(initPos.y() - p.y())));
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}
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}
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QPolygonF poly;
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QPointF theMagicWikipediaPoint(rect->rect().right(), sceneRect().bottom());
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poly << sceneRect().topLeft();
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poly << sceneRect().topRight();
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poly << sceneRect().bottomRight();
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poly << theMagicWikipediaPoint;
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poly << rect->rect().bottomRight();
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poly << rect->rect().topRight();
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poly << rect->rect().topLeft();
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poly << rect->rect().bottomLeft();
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poly << rect->rect().bottomRight();
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poly << theMagicWikipediaPoint;
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poly << sceneRect().bottomLeft();
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poly << sceneRect().topLeft();
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this->polyItem->setPolygon(poly);
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e->accept();
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}
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}
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prevButtons = buttons;
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}
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void CropScene::mouseReleaseEvent(QGraphicsSceneMouseEvent *e) {
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if (drawingSelection) {
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drawingSelection->mouseDragEndEvent(e, this);
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delete drawingSelection;
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drawingSelection = drawingSelectionMaker();
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if (drawingSelection)
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if (!drawingSelection->init(this)) setDrawingSelection("None", [] { return nullptr; });
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} else if (settings::settings().value("quickMode", false).toBool())
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done();
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prevButtons = Qt::NoButton;
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}
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void CropScene::mousePressEvent(QGraphicsSceneMouseEvent *e) {
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if (e->modifiers() & Qt::AltModifier) {
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QTransform stupidThing = views()[0]->transform();
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auto item = itemAt(e->scenePos(), stupidThing);
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if (item && item != polyItem && item != rect && item->zValue() != -1) {
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removeItem(item);
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}
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}
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}
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void CropScene::wheelEvent(QGraphicsSceneWheelEvent *event) {
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int pixCnt = settings::settings().value("magnifierPixelCount", 11).toInt();
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if (pixCnt % 2 == 0) pixCnt++;
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if (pixCnt > 20) return;
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if (event->delta() > 0 && pixCnt < 19)
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settings::settings().setValue("magnifierPixelCount", pixCnt += 2);
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else if (pixCnt > 1)
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settings::settings().setValue("magnifierPixelCount", pixCnt -= 2);
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for (auto item : gridRectsX) delete item;
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gridRectsX.clear();
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for (auto item : gridRectsY) delete item;
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gridRectsY.clear();
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initMagnifierGrid();
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updateMag(event->scenePos());
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}
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void CropScene::addDrawingAction(QMenu &menu, QString name, std::function<DrawItem *()> item) {
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QAction *action = new QAction;
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action->setText(name);
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connect(action, &QAction::triggered, [this, item, name](bool) { setDrawingSelection(name, item); });
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menu.addAction(action);
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}
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void CropScene::contextMenuEvent(QGraphicsSceneContextMenuEvent *e) {
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display->setText(drawingName);
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menu.exec(e->screenPos());
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e->accept();
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}
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void CropScene::keyReleaseEvent(QKeyEvent *event) {
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if (event->key() == Qt::Key_Return || event->key() == Qt::Key_Enter) done(); // Segfault
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}
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void CropScene::updateMag(QPointF scenePos) {
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QString rectStr("(0, 0, 0, 0)");
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if (rect) {
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rectStr = "(%0, %1, %2, %3)";
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rectStr = rectStr.arg(rect->rect().x()).arg(rect->rect().y()).arg(rect->rect().width()).arg(rect->rect().height());
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}
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magnifierHint->setPlainText(QString("ptr: (%0, %1)\nsel: %2").arg(scenePos.x()).arg(scenePos.y()).arg(rectStr));
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magnifierHintBox->setRect(magnifierHint->boundingRect());
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int pixCnt = settings::settings().value("magnifierPixelCount", 11).toInt();
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if (pixCnt % 2 == 0) pixCnt++;
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QPointF magnifierTopLeft = scenePos - QPointF(pixCnt / 2., pixCnt / 2.);
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QPointF magnifierPos = scenePos + QPointF(5, 5);
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magnifier->setPos(magnifierPos);
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magnifier->setPixmap(_pixmap->copy(magnifierTopLeft.x(), magnifierTopLeft.y(), pixCnt, pixCnt).scaled(110, 110));
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QPointF bottomRight = magnifierHintBox->sceneBoundingRect().bottomRight();
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if (magnifier->sceneBoundingRect().bottom() > bottomRight.y())
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bottomRight.setY(magnifier->sceneBoundingRect().bottom());
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if (magnifier->sceneBoundingRect().right() > bottomRight.x())
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bottomRight.setX(magnifier->sceneBoundingRect().right());
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if (bottomRight.x() > sceneRect().right())
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magnifierPos -= QPointF(qMax(130., magnifierHintBox->boundingRect().width()), 0);
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if (bottomRight.y() > sceneRect().bottom())
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magnifierPos -= QPointF(0, 130 + magnifierHintBox->boundingRect().height());
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magnifier->setPos(magnifierPos);
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}
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void CropScene::initMagnifierGrid() {
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QColor c(Qt::cyan);
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c.setAlphaF(.25);
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int pixCnt = settings::settings().value("magnifierPixelCount", 11).toInt();
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if (pixCnt % 2 == 0) pixCnt++;
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for (int i = 0; i < pixCnt; i++) {
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auto gridRectX = addRect(0, i * 110. / pixCnt, 110, 110. / pixCnt, QPen(Qt::black, 0.5));
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auto gridRectY = addRect(i * 110. / pixCnt, 0, 110. / pixCnt, 110, QPen(Qt::black, 0.5));
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gridRectX->setParentItem(magnifierBox);
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gridRectY->setParentItem(magnifierBox);
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gridRectX->setZValue(1);
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gridRectY->setZValue(1);
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gridRectsX.append(gridRectX);
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gridRectsY.append(gridRectY);
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if (i == (pixCnt / 2)) {
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gridRectX->setBrush(c);
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gridRectY->setBrush(c);
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}
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}
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}
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void CropScene::done() {
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if (rect) {
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rect->setPen(QPen(Qt::NoPen));
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magnifier->setVisible(false);
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magnifierBox->setVisible(false);
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magnifierHint->setVisible(false);
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magnifierHintBox->setVisible(false);
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emit closedWithRect(rect->rect().toRect());
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}
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}
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