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149 lines
3.7 KiB
149 lines
3.7 KiB
/*
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* Copyright (c) 2002 Patrick Julien <freak@codepimps.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include <tqpoint.h>
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#include <tqcolor.h>
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#include <kaction.h>
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#include <kcommand.h>
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#include <klocale.h>
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#include <kdebug.h>
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#include "kis_canvas_controller.h"
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#include "kis_canvas_subject.h"
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#include "kis_image.h"
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#include "kis_layer.h"
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#include "kis_strategy_move.h"
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#include "kis_undo_adapter.h"
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KisStrategyMove::KisStrategyMove()
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{
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reset(0);
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}
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KisStrategyMove::KisStrategyMove(KisCanvasSubject *subject)
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{
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reset(subject);
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}
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KisStrategyMove::~KisStrategyMove()
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{
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}
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void KisStrategyMove::reset(KisCanvasSubject *subject)
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{
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m_subject = subject;
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m_dragging = false;
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if (m_subject) {
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m_controller = subject->canvasController();
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} else {
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m_controller = 0;
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}
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}
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void KisStrategyMove::startDrag(const TQPoint& pos)
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{
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// pos is the user chosen handle point
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if (m_subject) {
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KisImageSP img;
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KisLayerSP dev;
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if (!(img = m_subject->currentImg()))
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return;
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dev = img->activeLayer();
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if (!dev || !dev->visible())
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return;
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m_dragging = true;
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m_dragStart.setX(pos.x());
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m_dragStart.setY(pos.y());
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m_layerStart.setX(dev->x());
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m_layerStart.setY(dev->y());
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m_layerPosition = m_layerStart;
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}
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}
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void KisStrategyMove::drag(const TQPoint& original)
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{
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// original is the position of the user chosen handle point
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if (m_subject && m_dragging) {
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KisImageSP img = m_subject->currentImg();
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KisLayerSP dev;
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if (img && (dev = img->activeLayer())) {
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TQPoint pos = original;
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TQRect rc;
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pos -= m_dragStart; // convert to delta
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rc = dev->extent();
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dev->setX(dev->x() + pos.x());
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dev->setY(dev->y() + pos.y());
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rc = rc.unite(dev->extent());
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m_layerPosition = TQPoint(dev->x(), dev->y());
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m_dragStart = original;
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dev->setDirty(rc);
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}
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}
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}
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void KisStrategyMove::endDrag(const TQPoint& pos, bool undo)
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{
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if (m_subject && m_dragging) {
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KisImageSP img = m_subject->currentImg();
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KisLayerSP dev;
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if (img && (dev = img->activeLayer())) {
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drag(pos);
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m_dragging = false;
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if (undo && img->undo()) {
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KCommand *cmd = dev->moveCommand(m_layerStart, m_layerPosition);
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Q_CHECK_PTR(cmd);
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KisUndoAdapter *adapter = img->undoAdapter();
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if (adapter) {
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adapter->addCommand(cmd);
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} else {
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delete cmd;
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}
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}
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img->setModified();
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}
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}
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}
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void KisStrategyMove::simpleMove(const TQPoint& pt1, const TQPoint& pt2)
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{
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startDrag(pt1);
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endDrag(pt2);
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}
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void KisStrategyMove::simpleMove(TQ_INT32 x1, TQ_INT32 y1, TQ_INT32 x2, TQ_INT32 y2)
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{
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startDrag(TQPoint(x1, y1));
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endDrag(TQPoint(x2, y2));
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}
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