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| author | Mateusz Piekos <mateuszpiekos@gmail.com> | 2012-05-30 12:40:27 (GMT) |
|---|---|---|
| committer | Remko Tronçon <git@el-tramo.be> | 2012-09-08 16:14:27 (GMT) |
| commit | fe8a8aa031da734f3112184420b372021d9e10c7 (patch) | |
| tree | 9f8e0b7d11d7612eb25a8682cf940fa647ca67f2 /Swift/QtUI/Whiteboard/FreehandLineItem.cpp | |
| parent | 0174723efbc1f612433d45c6916a2ad4596b96ba (diff) | |
| download | swift-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.cpp | 97 |
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; + } +} |