+/*

+ * Copyright (c) 2016 Isode Limited.

+ * All rights reserved.

+ * See the COPYING file for more information.

+ */

+

+#include <Swift/QtUI/Whiteboard/GView.h>

+

+#include <Swift/QtUI/QtSwiftUtil.h>

+ GView::GView(QGraphicsScene* scene, QWidget* parent) : QGraphicsView(scene, parent), zValue(0), mousePressed(false), brush(QColor(Qt::white)), defaultBrush(QColor(Qt::white)), mode(GView::Select), lastItem(nullptr), selectionRect(nullptr), textDialog(nullptr) {

+ }

+

+ void GView::setLineWidth(int i) {

+ pen.setWidth(i);

+ if (selectionRect) {

+ QGraphicsItem* item = selectionRect->data(1).value<QGraphicsItem*>();

+ changePenAndBrush(selectionRect->data(1).value<QGraphicsItem*>(), pen, brush);

+ lastItemChanged(item, items_.indexOf(item)+1, Update);

+ } else {

+ defaultPen.setWidth(i);

+ }

+ }

+

+ void GView::setLineColor(QColor color) {

+ pen.setColor(color);

+ if (selectionRect) {

+ QGraphicsItem* item = selectionRect->data(1).value<QGraphicsItem*>();

+ changePenAndBrush(selectionRect->data(1).value<QGraphicsItem*>(), pen, brush);

+ lastItemChanged(item, items_.indexOf(item)+1, Update);

+ } else {

+ defaultPen.setColor(color);

+ }

+ lineColorChanged(color);

+ }

+

+ QColor GView::getLineColor() {

+ return pen.color();

+ }

+

+ void GView::setBrushColor(QColor color) {

+ brush.setColor(color);

+ if (selectionRect) {

+ QGraphicsItem* item = selectionRect->data(1).value<QGraphicsItem*>();

+ changePenAndBrush(selectionRect->data(1).value<QGraphicsItem*>(), pen, brush);

+ lastItemChanged(item, items_.indexOf(item)+1, Update);

+ } else {

+ defaultBrush.setColor(color);

+ }

+ brushColorChanged(color);

+ }

+

+ QColor GView::getBrushColor() {

+ return brush.color();

+ }

+

+ void GView::setMode(Mode mode) {

+ this->mode = mode;

+ lastItem = nullptr;

+ deselect();

+ }

+

+ void GView::addItem(QGraphicsItem* item, QString id, int pos) {

+ itemsMap_.insert(id, item);

+ if (pos > items_.size()) {

+ item->setZValue(zValue++);

+ scene()->addItem(item);

+ items_.append(item);

+ } else {

+ QGraphicsItem* temp = items_.at(pos-1);

+ item->setZValue(temp->zValue());

+ scene()->addItem(item);

+ item->stackBefore(temp);

+ items_.insert(pos-1, item);

+ }

+ }

+

+ void GView::clear() {

+ scene()->clear();

+ items_.clear();

+ itemsMap_.clear();

+ lastItem = nullptr;

+ selectionRect = nullptr;

+ brush = QBrush(QColor(Qt::white));

+ defaultBrush = QBrush(QColor(Qt::white));

+ pen = QPen();

+ pen.setWidth(1);

+ defaultPen = pen;

+ lineWidthChanged(1);

+ lineColorChanged(pen.color());

+ brushColorChanged(brush.color());

+ }

+

+ QGraphicsItem* GView::getItem(QString id) {

+ return itemsMap_.value(id);

+ }

+

+ void GView::deleteItem(QString id) {

+ deselect(id);

+ QGraphicsItem* item = itemsMap_.value(id);

+ items_.removeOne(item);

+ itemsMap_.remove(id);

+ scene()->removeItem(item);

+ delete item;

+ }

+

+ QString GView::getNewID() {

+ return P2QSTRING(idGenerator.generateID());

+ }

+

+ void GView::mouseMoveEvent(QMouseEvent* event)

+ {

+ if (!mousePressed) {

+ return;

+ }

+

+ if (mode == Line) {

+ QGraphicsLineItem* item = qgraphicsitem_cast<QGraphicsLineItem*>(lastItem);

+ if(item != nullptr) {

+ QLineF line = item->line();

+ line.setP1(this->mapToScene(event->pos()));

+ item->setLine(line);

+

+ }

+ }

+ else if (mode == Rect) {

+ QGraphicsRectItem* item = qgraphicsitem_cast<QGraphicsRectItem*>(lastItem);

+ if (item != nullptr) {

+ QPointF beginPoint = item->data(0).toPointF();

+ QPointF newPoint = this->mapToScene(event->pos());

+ QRectF rect = item->rect();

+ if (beginPoint.x() <= newPoint.x() && beginPoint.y() <= newPoint.y()) {

+ rect.setTopLeft(beginPoint);

+ rect.setBottomRight(newPoint);

+ }

+ else if (beginPoint.x() > newPoint.x() && beginPoint.y() <= newPoint.y()) {

+ rect.setTopRight(beginPoint);

+ rect.setBottomLeft(newPoint);

+ }

+ else if (beginPoint.x() <= newPoint.x() && beginPoint.y() > newPoint.y()) {

+ rect.setBottomLeft(beginPoint);

+ rect.setTopRight(newPoint);

+ }

+ else if (beginPoint.x() > newPoint.x() && beginPoint.y() > newPoint.y()) {

+ rect.setBottomRight(beginPoint);

+ rect.setTopLeft(newPoint);

+ }

+ item->setRect(rect);

+ }

+ }

+ else if (mode == Circle) {

+ QGraphicsEllipseItem* item = qgraphicsitem_cast<QGraphicsEllipseItem*>(lastItem);

+ QPainterPath path;

+ QPointF beginPoint = item->data(0).toPointF();

+ QPointF newPoint = this->mapToScene(event->pos());

+ QRectF rect = item->rect();

+ if (beginPoint.x() <= newPoint.x() && beginPoint.y() <= newPoint.y()) {

+ rect.setTopLeft(beginPoint);

+ rect.setBottomRight(newPoint);

+ }

+ else if (beginPoint.x() > newPoint.x() && beginPoint.y() <= newPoint.y()) {

+ rect.setTopRight(beginPoint);

+ rect.setBottomLeft(newPoint);

+ }

+ else if (beginPoint.x() <= newPoint.x() && beginPoint.y() > newPoint.y()) {

+ rect.setBottomLeft(beginPoint);

+ rect.setTopRight(newPoint);

+ }

+ else if (beginPoint.x() > newPoint.x() && beginPoint.y() > newPoint.y()) {

+ rect.setBottomRight(beginPoint);

+ rect.setTopLeft(newPoint);

+ }

+

+ item->setRect(rect);

+ }

+ else if (mode == HandLine) {

+ FreehandLineItem* item = qgraphicsitem_cast<FreehandLineItem*>(lastItem);

+ if (item != nullptr) {

+ QPointF newPoint = this->mapToScene(event->pos());

+ item->lineTo(newPoint);

+ }

+ }

+ else if (mode == Polygon) {

+ QGraphicsPolygonItem* item = qgraphicsitem_cast<QGraphicsPolygonItem*>(lastItem);

+ QPointF newPoint = this->mapToScene(event->pos());

+ QPolygonF polygon = item->polygon();

+ polygon.erase(polygon.end()-1);

+ polygon.append(newPoint);

+ item->setPolygon(polygon);

+ }

+ else if (mode == Select) {

+ QGraphicsItem* item = selectionRect->data(1).value<QGraphicsItem*>();

+ if (item != nullptr) {

+ QPainterPath path;

+ QPointF beginPoint = selectionRect->data(0).toPointF();

+ QPointF newPoint = this->mapToScene(event->pos());

+ item->setPos(beginPoint + newPoint);

+ selectionRect->setPos(beginPoint + newPoint);

+ }

+ }

+ }

+

+ void GView::mousePressEvent(QMouseEvent *event)

+ {

+ mousePressed = true;

+ deselect();

+ if (mode == Line) {

+ QPointF point = this->mapToScene(event->pos());

+ QGraphicsItem* item = scene()->addLine(point.x(), point.y(), point.x(), point.y(), pen);

+ QString id = getNewID();

+ item->setZValue(10000000);

+ item->setData(100, id);

+ item->setData(101, items_.size());

+ lastItem = item;

+ }

+ else if (mode == Rect) {

+ QPointF point = this->mapToScene(event->pos());

+ QGraphicsRectItem* item = scene()->addRect(point.x(), point.y(), 0, 0, pen, brush);

+ QString id = getNewID();

+ item->setZValue(10000000);

+ item->setData(0, point);

+ item->setData(100, id);

+ item->setData(101, items_.size());

+ lastItem = item;

+ }

+ else if (mode == Rubber) {

+ QPointF point = this->mapToScene(event->pos());

+ int w = pen.width();

+ QRectF rect(point.x()-w, point.y()-w, w*2, w*2);

+ QList<QGraphicsItem*> list = scene()->items(rect);

+ if (!list.isEmpty())

+ {

+ QGraphicsItem* item = scene()->items(rect).first();

+ QString id = item->data(100).toString();

+ int pos = items_.indexOf(item)+1;

+ itemDeleted(id, pos);

+ deleteItem(id);

+ }

+ }

+ else if (mode == Circle) {

+ QPointF point = this->mapToScene(event->pos());

+ QGraphicsEllipseItem* item = scene()->addEllipse(point.x(), point.y(), 0, 0, pen, brush);

+ QString id = getNewID();

+ item->setZValue(10000000);

+ item->setData(0, point);

+ item->setData(100, id);

+ item->setData(101, items_.size());

+ lastItem = item;

+ }

+ else if (mode == HandLine) {

+ QPointF point = this->mapToScene(event->pos());

+ FreehandLineItem* item = new FreehandLineItem;

+ QString id = getNewID();

+ item->setPen(pen);

+ item->setStartPoint(point);

+ item->setZValue(10000000);

+ item->setData(100, id);

+ item->setData(101, items_.size());

+ scene()->addItem(item);

+ lastItem = item;

+ }

+ else if (mode == Text) {

+ QPointF point = this->mapToScene(event->pos());

+ QGraphicsTextItem* item = scene()->addText("");

+ QString id = getNewID();

+ item->setData(100, id);

+ item->setData(101, items_.size());

+ item->setDefaultTextColor(pen.color());

+ textDialog = new TextDialog(item, this);

+ connect(textDialog, SIGNAL(accepted(QGraphicsTextItem*)), this, SLOT(handleTextItemModified(QGraphicsTextItem*)));

+ textDialog->setAttribute(Qt::WA_DeleteOnClose);

+ textDialog->show();

+ item->setPos(point);

+ lastItem = item;

+ }

+ else if (mode == Polygon) {

+ QPointF point = this->mapToScene(event->pos());

+ QGraphicsPolygonItem* item = dynamic_cast<QGraphicsPolygonItem*>(lastItem);

+ if (item == nullptr) {

+ QPolygonF polygon;

+ polygon.append(point);

+ polygon.append(point);

+ item = scene()->addPolygon(polygon, pen, brush);

+ QString id = getNewID();

+ item->setZValue(10000000);

+ item->setData(100, id);

+ item->setData(101, items_.size());

+ lastItem = item;

+ }

+ else {

+ QPolygonF polygon;

+ polygon = item->polygon();

+ polygon.append(point);

+ item->setPolygon(polygon);

+ }

+ }

+ else if (mode == Select) {

+ QPointF point = this->mapToScene(event->pos());

+ int w = pen.width();

+ if (w == 0) {

+ w = 1;

+ }

+ QRectF rect(point.x()-w, point.y()-w, w*2, w*2);

+ QList<QGraphicsItem*> list = scene()->items(rect);

+ if (!list.isEmpty()) {

+ QPen pen;

+ pen.setColor(QColor(Qt::gray));

+ pen.setStyle(Qt::DashLine);

+ QGraphicsItem *item = scene()->items(rect).first();

+ selectionRect = scene()->addRect(item->boundingRect(), pen);

+ selectionRect->setZValue(1000000);

+ selectionRect->setData(0, item->pos()-point);

+ selectionRect->setPos(item->pos());

+ QVariant var(QVariant::UserType);

+ var.setValue(item);

+ selectionRect->setData(1, var);

+ setActualPenAndBrushFromItem(item);

+ }

+ }

+ }

+

+ void GView::mouseReleaseEvent(QMouseEvent* /*event*/)

+ {

+ mousePressed = false;

+ QGraphicsPolygonItem* polygon = dynamic_cast<QGraphicsPolygonItem*>(lastItem);

+ if (polygon && polygon->polygon().size() >= 3) {

+ lastItemChanged(polygon, items_.indexOf(polygon)+1, Update);

+ } else if (lastItem) {

+ zValue++;

+ lastItem->setZValue(zValue++);

+ items_.append(lastItem);

+ itemsMap_.insert(lastItem->data(100).toString(), lastItem);

+

+ lastItemChanged(lastItem, items_.size(), New);

+ } else if (selectionRect){

+ QGraphicsItem* item = selectionRect->data(1).value<QGraphicsItem*>();

+ lastItemChanged(item, items_.indexOf(item)+1, Update);

+ }

+ }

+

+

+ void GView::handleTextItemModified(QGraphicsTextItem* item) {

+ lastItemChanged(item, item->data(101).toInt(), Update);

+ }

+

+ void GView::moveUpSelectedItem()

+ {

+ if (selectionRect) {

+ QGraphicsItem* item = selectionRect->data(1).value<QGraphicsItem*>();

+ int pos = items_.indexOf(item);

+ if (pos < items_.size()-1) {

+ lastItemChanged(item, pos+1, MoveUp);

+ move(item, pos+2);

+ }

+ }

+ }

+

+ void GView::moveDownSelectedItem()

+ {

+ if (selectionRect) {

+ QGraphicsItem* item = selectionRect->data(1).value<QGraphicsItem*>();

+ int pos = items_.indexOf(item);

+ if (pos > 0) {

+ lastItemChanged(item, pos+1, MoveDown);

+ move(item, pos);

+ }

+ }

+ }

+

+ void GView::move(QGraphicsItem* item, int npos) {

+ int pos = items_.indexOf(item);

+ QGraphicsItem* itemAfter = nullptr;

+ if (npos-1 > pos) {

+ if (npos == items_.size()) {

+ item->setZValue(zValue++);

+ } else {

+ itemAfter = items_.at(npos);

+ }

+

+ items_.insert(npos, item);

+ items_.removeAt(pos);

+ } else if (npos-1 < pos) {

+ itemAfter = items_.at(npos-1);

+ items_.insert(npos-1, item);

+ items_.removeAt(pos+1);

+ }

+ if (itemAfter) {

+ item->setZValue(itemAfter->zValue());

+ item->stackBefore(itemAfter);

+ }

+ }

+

+ void GView::changePenAndBrush(QGraphicsItem* item, QPen pen, QBrush brush) {

+ QGraphicsLineItem* lineItem = qgraphicsitem_cast<QGraphicsLineItem*>(item);

+ if (lineItem) {

+ lineItem->setPen(pen);

+ }

+

+ FreehandLineItem* handLineItem = qgraphicsitem_cast<FreehandLineItem*>(item);

+ if (handLineItem) {

+ handLineItem->setPen(pen);

+ }

+

+ QGraphicsRectItem* rectItem = qgraphicsitem_cast<QGraphicsRectItem*>(item);

+ if (rectItem) {

+ rectItem->setPen(pen);

+ rectItem->setBrush(brush);

+ }

+

+ QGraphicsTextItem* textItem = qgraphicsitem_cast<QGraphicsTextItem*>(item);

+ if (textItem) {

+ textItem->setDefaultTextColor(pen.color());

+ }

+

+ QGraphicsPolygonItem* polygonItem = qgraphicsitem_cast<QGraphicsPolygonItem*>(item);

+ if (polygonItem) {

+ polygonItem->setPen(pen);

+ polygonItem->setBrush(brush);

+ }

+

+ QGraphicsEllipseItem* ellipseItem = qgraphicsitem_cast<QGraphicsEllipseItem*>(item);

+ if (ellipseItem) {

+ ellipseItem->setPen(pen);

+ ellipseItem->setBrush(brush);

+ }

+ lineColorChanged(pen.color());

+ brushColorChanged(brush.color());

+ }

+

+ void GView::setActualPenAndBrushFromItem(QGraphicsItem* item) {

+ QGraphicsLineItem* lineItem = qgraphicsitem_cast<QGraphicsLineItem*>(item);

+ if (lineItem) {

+ pen = lineItem->pen();

+ }

+

+ FreehandLineItem* handLineItem = qgraphicsitem_cast<FreehandLineItem*>(item);

+ if (handLineItem) {

+ pen = handLineItem->pen();

+ }

+

+ QGraphicsRectItem* rectItem = qgraphicsitem_cast<QGraphicsRectItem*>(item);

+ if (rectItem) {

+ pen = rectItem->pen();

+ brush = rectItem->brush();

+ }

+

+ QGraphicsTextItem* textItem = qgraphicsitem_cast<QGraphicsTextItem*>(item);

+ if (textItem) {

+ pen.setColor(textItem->defaultTextColor());

+ }

+

+ QGraphicsPolygonItem* polygonItem = qgraphicsitem_cast<QGraphicsPolygonItem*>(item);

+ if (polygonItem) {

+ pen = polygonItem->pen();

+ brush = polygonItem->brush();

+ }

+

+ QGraphicsEllipseItem* ellipseItem = qgraphicsitem_cast<QGraphicsEllipseItem*>(item);

+ if (ellipseItem) {

+ pen = ellipseItem->pen();

+ brush = ellipseItem->brush();

+ }

+ lineWidthChanged(pen.width());

+ lineColorChanged(pen.color());

+ brushColorChanged(brush.color());

+ }

+

+ void GView::deselect() {

+ if (selectionRect != nullptr) {

+ pen = defaultPen;

+ brush = defaultBrush;

+ scene()->removeItem(selectionRect);

+ delete selectionRect;

+ selectionRect = nullptr;

+ lineWidthChanged(pen.width());

+ lineColorChanged(pen.color());

+ brushColorChanged(brush.color());

+ }

+ }

+

+ void GView::deselect(QString id) {

+ if (selectionRect != nullptr) {

+ QGraphicsItem* item = getItem(id);

+ if (item && selectionRect->data(1).value<QGraphicsItem*>() == item) {

+ pen = defaultPen;

+ brush = defaultBrush;

+ scene()->removeItem(selectionRect);

+ delete selectionRect;

+ selectionRect = nullptr;

+ lineWidthChanged(pen.width());

+ lineColorChanged(pen.color());

+ brushColorChanged(brush.color());

+ }

+ }

+ }