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authorMateusz Piekos <mateuszpiekos@gmail.com>2012-05-30 12:40:27 (GMT)
committerRemko Tronçon <git@el-tramo.be>2012-09-08 16:14:27 (GMT)
commitfe8a8aa031da734f3112184420b372021d9e10c7 (patch)
tree9f8e0b7d11d7612eb25a8682cf940fa647ca67f2 /Swift/QtUI/Whiteboard/FreehandLineItem.cpp
parent0174723efbc1f612433d45c6916a2ad4596b96ba (diff)
downloadswift-contrib-fe8a8aa031da734f3112184420b372021d9e10c7.zip
swift-contrib-fe8a8aa031da734f3112184420b372021d9e10c7.tar.bz2
Support whiteboarding.
License: This patch is BSD-licensed, see http://www.opensource.org/licenses/bsd-license.php
Diffstat (limited to 'Swift/QtUI/Whiteboard/FreehandLineItem.cpp')
-rw-r--r--Swift/QtUI/Whiteboard/FreehandLineItem.cpp97
1 files changed, 97 insertions, 0 deletions
diff --git a/Swift/QtUI/Whiteboard/FreehandLineItem.cpp b/Swift/QtUI/Whiteboard/FreehandLineItem.cpp
new file mode 100644
index 0000000..8821062
--- /dev/null
+++ b/Swift/QtUI/Whiteboard/FreehandLineItem.cpp
@@ -0,0 +1,97 @@
+/*
+ * Copyright (c) 2012 Mateusz Piękos
+ * Licensed under the simplified BSD license.
+ * See Documentation/Licenses/BSD-simplified.txt for more information.
+ */
+
+#include "FreehandLineItem.h"
+
+
+namespace Swift {
+ FreehandLineItem::FreehandLineItem(QGraphicsItem* parent) : QGraphicsItem(parent) {
+ }
+
+ QRectF FreehandLineItem::boundingRect() const
+ {
+ return boundRect;
+ }
+
+ void FreehandLineItem::paint(QPainter* painter, const QStyleOptionGraphicsItem* /*option*/, QWidget* /*widget*/)
+ {
+ painter->setPen(pen_);
+ if (points_.size() > 0) {
+ QVector<QPointF>::const_iterator it = points_.begin();
+ QPointF previous = *it;
+ ++it;
+ for (; it != points_.end(); ++it) {
+ painter->drawLine(previous, *it);
+ previous = *it;
+ }
+ }
+ }
+
+ void FreehandLineItem::setStartPoint(QPointF point)
+ {
+ points_.clear();
+ points_.append(point);
+ QRectF rect(point, point);
+ prepareGeometryChange();
+ boundRect = rect;
+ }
+
+ void FreehandLineItem::lineTo(QPointF point)
+ {
+ qreal x1, x2, y1, y2;
+ x1 = points_.last().x();
+ x2 = point.x();
+ y1 = points_.last().y();
+ y2 = point.y();
+ if (x1 > x2) {
+ qreal temp = x1;
+ x1 = x2;
+ x2 = temp;
+ }
+ if (y1 > y2) {
+ qreal temp = y1;
+ y1 = y2;
+ y2 = temp;
+ }
+ QRectF rect(x1-1, y1-1, x2+1-x1, y2+1-y1);
+
+ points_.append(point);
+
+ prepareGeometryChange();
+ boundRect |= rect;
+ }
+
+ bool FreehandLineItem::collidesWithPath(const QPainterPath& path, Qt::ItemSelectionMode /*mode*/) const
+ {
+ QVector<QPointF>::const_iterator it;
+ QSizeF size(1,1);
+ for (it = points_.begin(); it != points_.end(); ++it) {
+ if (path.intersects(QRectF(*it, size))) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ void FreehandLineItem::setPen(const QPen& pen)
+ {
+ pen_ = pen;
+ update(boundRect);
+ }
+
+ QPen FreehandLineItem::pen() const
+ {
+ return pen_;
+ }
+
+ const QVector<QPointF>& FreehandLineItem::points() const {
+ return points_;
+ }
+
+ int FreehandLineItem::type() const {
+ return Type;
+ }
+}