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Diffstat (limited to 'src/gui/kdeext/QCanvasGroupableItem.cpp')
| -rw-r--r-- | src/gui/kdeext/QCanvasGroupableItem.cpp | 279 |
1 files changed, 279 insertions, 0 deletions
diff --git a/src/gui/kdeext/QCanvasGroupableItem.cpp b/src/gui/kdeext/QCanvasGroupableItem.cpp new file mode 100644 index 0000000..1fc2f2d --- /dev/null +++ b/src/gui/kdeext/QCanvasGroupableItem.cpp @@ -0,0 +1,279 @@ +// -*- c-basic-offset: 4 -*- + +/* + Rosegarden + A sequencer and musical notation editor. + + This program is Copyright 2000-2008 + Guillaume Laurent <[email protected]>, + Chris Cannam <[email protected]>, + Richard Bown <[email protected]> + + The moral right of the authors to claim authorship of this work + has been asserted. + + This program is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. See the file + COPYING included with this distribution for more information. +*/ + +#include <qcanvas.h> +#include "misc/Debug.h" + +#include "QCanvasGroupableItem.h" + +QCanvasGroupableItem::QCanvasGroupableItem(QCanvasItem *i, + QCanvasItemGroup *g, + bool withRelativeCoords) + : m_group(g), + m_item(i) +{ + // RG_DEBUG << "QCanvasGroupableItem() - this : " << this + // << " - group : " << g + // << " - item : " << i << endl; + + if (withRelativeCoords) + group()->addItemWithRelativeCoords(item()); + else + group()->addItem(item()); +} + +QCanvasGroupableItem::~QCanvasGroupableItem() +{ + // RG_DEBUG << "~QCanvasGroupableItem() - this : " << this + // << " - group : " << group() + // << " - item : " << item() << endl; + + // remove from the item group if we're still attached to one + if (group()) + group()->removeItem(item()); +} + +void +QCanvasGroupableItem::relativeMoveBy(double dx, double dy) +{ + m_item->moveBy(dx + m_group->x(), + dy + m_group->y()); +} + +void +QCanvasGroupableItem::detach() +{ + m_group = 0; +} + +////////////////////////////////////////////////////////////////////// + +QCanvasItemGroup::QCanvasItemGroup(QCanvas *c) + : QCanvasItem(c) +{ + // RG_DEBUG << "QCanvasItemGroup() - this : " << this << endl; +} + +QCanvasItemGroup::~QCanvasItemGroup() +{ + // RG_DEBUG << "~QCanvasItemGroup() - this : " << this << endl; + + // Tell all our items that we're being destroyed + QCanvasItemList::Iterator i; + for (i = m_items.begin(); i != m_items.end(); ++i) { + QCanvasGroupableItem *t = dynamic_cast<QCanvasGroupableItem*>(*i); + if (t) + t->detach(); + } +} + +void +QCanvasItemGroup::moveBy(double dx, double dy) +{ + QCanvasItem::moveBy(dx, dy); // move ourselves + + QCanvasItemList::Iterator i; // move group items + for (i = m_items.begin(); i != m_items.end(); ++i) + (*i)->moveBy(dx, dy); +} + +void +QCanvasItemGroup::advance(int stage) +{ + QCanvasItemList::Iterator i; + for (i = m_items.begin(); i != m_items.end(); ++i) + (*i)->advance(stage); +} + +bool +QCanvasItemGroup::collidesWith(const QCanvasItem *item) const +{ + QCanvasItemList::ConstIterator i; + for (i = m_items.begin(); i != m_items.end(); ++i) + if ((*i)->collidesWith(item)) + return true; + + return false; +} + +void +QCanvasItemGroup::draw(QPainter&) +{ + // There isn't anything to do - all the items will be drawn + // seperately by the canvas anyway. However the function has to be + // implemented because it's an abstract virtual in QCanvasItem. + + // QCanvasItemList::Iterator i; + // for(i = m_items.begin(); i != m_items.end(); ++i) + // (*i)->draw(p); +} + +void +QCanvasItemGroup::setVisible(bool yes) +{ + QCanvasItemList::Iterator i; + for (i = m_items.begin(); i != m_items.end(); ++i) + (*i)->setVisible(yes); +} + +void +QCanvasItemGroup::setSelected(bool yes) +{ + QCanvasItem::setSelected(yes); + + QCanvasItemList::Iterator i; + for (i = m_items.begin(); i != m_items.end(); ++i) + (*i)->setVisible(yes); +} + +void +QCanvasItemGroup::setEnabled(bool yes) +{ + QCanvasItem::setEnabled(yes); + + QCanvasItemList::Iterator i; + for (i = m_items.begin(); i != m_items.end(); ++i) + (*i)->setEnabled(yes); +} + +void +QCanvasItemGroup::setActive(bool yes) +{ + QCanvasItem::setActive(yes); + + QCanvasItemList::Iterator i; + for (i = m_items.begin(); i != m_items.end(); ++i) + (*i)->setActive(yes); +} + +int +QCanvasItemGroup::rtti() const +{ + return 10002; +} + +QRect +QCanvasItemGroup::boundingRect() const +{ + QRect r; + + QCanvasItemList::ConstIterator i; + for (i = m_items.begin(); i != m_items.end(); ++i) + r.unite((*i)->boundingRect()); + + return r; +} + +QRect +QCanvasItemGroup::boundingRectAdvanced() const +{ + QRect r; + + QCanvasItemList::ConstIterator i; + for (i = m_items.begin(); i != m_items.end(); ++i) + r.unite((*i)->boundingRectAdvanced()); + + return r; +} + +bool +QCanvasItemGroup::collidesWith(const QCanvasSprite *s, + const QCanvasPolygonalItem *p, + const QCanvasRectangle *r, + const QCanvasEllipse *e, + const QCanvasText *t) const +{ + if (s) + return collidesWith(s); + else if (p) + return collidesWith(p); + else if (r) + return collidesWith(r); + else if (e) + return collidesWith(e); + else if (t) + return collidesWith(t); + + return false; + +} + +void +QCanvasItemGroup::addItem(QCanvasItem *i) +{ + m_items.append(i); +} + +void +QCanvasItemGroup::addItemWithRelativeCoords(QCanvasItem *i) +{ + i->moveBy(x(), y()); + addItem(i); +} + +void +QCanvasItemGroup::removeItem(QCanvasItem *i) +{ + // RG_DEBUG << "QCanvasItemGroup::removeItem() - this : " + // << this << " - item : " << i << endl; + m_items.remove(i); +} + +////////////////////////////////////////////////////////////////////// + + +QCanvasLineGroupable::QCanvasLineGroupable(QCanvas *c, + QCanvasItemGroup *g) + : QCanvasLine(c), + QCanvasGroupableItem(this, g) +{} + +////////////////////////////////////////////////////////////////////// + +QCanvasRectangleGroupable::QCanvasRectangleGroupable(QCanvas *c, + QCanvasItemGroup *g) + : QCanvasRectangle(c), + QCanvasGroupableItem(this, g) +{} + +////////////////////////////////////////////////////////////////////// + +QCanvasTextGroupable::QCanvasTextGroupable(const QString& label, + QCanvas *c, + QCanvasItemGroup *g) + : QCanvasText(label, c), + QCanvasGroupableItem(this, g) +{} + +QCanvasTextGroupable::QCanvasTextGroupable(QCanvas *c, + QCanvasItemGroup *g) + : QCanvasText(c), + QCanvasGroupableItem(this, g) +{} + +////////////////////////////////////////////////////////////////////// + +QCanvasSpriteGroupable::QCanvasSpriteGroupable(QCanvasPixmapArray *pa, + QCanvas *c, + QCanvasItemGroup *g) + : QCanvasSprite(pa, c), + QCanvasGroupableItem(this, g) +{} |