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/* This file is part of the KDE project
Copyright (C) 2006 Thorsten Zachmann <zachmann@kde.org>
Copyright (C) 2006-2007 Thomas Zander <zander@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "ShapeMoveStrategy.h"
#include "SelectionDecorator.h"
#include <KoShapeAnchor.h>
#include <KoCanvasBase.h>
#include <KoShapeManager.h>
#include <KoShapeContainer.h>
#include <KoShapeContainerModel.h>
#include <commands/KoShapeMoveCommand.h>
#include <KoSnapGuide.h>
#include <KoPointerEvent.h>
#include <KoToolBase.h>
#include <KoSelection.h>
#include <klocalizedstring.h>
ShapeMoveStrategy::ShapeMoveStrategy(KoToolBase *tool, const QPointF &clicked)
: KoInteractionStrategy(tool)
, m_start(clicked)
, m_canvas(tool->canvas())
, m_firstMove(true)
{
// FIXME: This test is also done in DefaultTool, so it should also be responsible for setting the shapes to operate on
QList<KoShape*> selectedShapes = m_canvas->shapeManager()->selection()->selectedShapes(KoFlake::StrippedSelection);
QRectF boundingRect;
foreach(KoShape *shape, selectedShapes) {
if (shape->allowedInteraction(KoShape::MoveAllowed, false)) {
m_selectedShapes << shape;
m_previousPositions << shape->position();
m_newPositions << shape->position();
boundingRect = boundingRect.united( shape->boundingRect() );
if (shape->anchor()) {
m_previousOffsets << shape->anchor()->offset();
m_newOffsets << shape->anchor()->offset();
} else {
m_previousOffsets << QPointF();
m_newOffsets << QPointF();
}
}
}
KoSelection * selection = m_canvas->shapeManager()->selection();
m_initialOffset = selection->absolutePosition( SelectionDecorator::hotPosition() ) - m_start;
m_initialSelectionPosition = selection->position();
m_canvas->snapGuide()->setIgnoredShapes( selection->selectedShapes( KoFlake::FullSelection ) );
tool->setStatusText(i18n("Press ALT to hold x- or y-position."));
}
void ShapeMoveStrategy::handleMouseMove(const QPointF &point, Qt::KeyboardModifiers modifiers)
{
if(m_selectedShapes.isEmpty())
return;
if (m_firstMove) {
// skip first move to avoid accidental move during mouse button press
m_firstMove = false;
return;
}
QPointF diff = point - m_start;
if (modifiers & (Qt::AltModifier | Qt::ControlModifier)) {
// keep x or y position unchanged
if(qAbs(diff.x()) < qAbs(diff.y()))
diff.setX(0);
else
diff.setY(0);
} else {
QPointF positionToSnap = point + m_initialOffset;
tool()->canvas()->updateCanvas( tool()->canvas()->snapGuide()->boundingRect() );
QPointF snappedPosition = tool()->canvas()->snapGuide()->snap( positionToSnap, modifiers );
tool()->canvas()->updateCanvas( tool()->canvas()->snapGuide()->boundingRect() );
diff = snappedPosition - m_initialOffset - m_start;
}
m_diff = diff;
moveSelection();
}
void ShapeMoveStrategy::handleCustomEvent(KoPointerEvent *event)
{
QPointF diff = tool()->canvas()->viewConverter()->viewToDocument(event->pos());
if (event->modifiers() & (Qt::AltModifier | Qt::ControlModifier)) {
// keep x or y position unchanged
if(qAbs(diff.x()) < qAbs(diff.y()))
diff.setX(0);
else
diff.setY(0);
}
m_diff += 0.1 * diff ;
moveSelection();
}
void ShapeMoveStrategy::moveSelection()
{
Q_ASSERT(m_newPositions.count());
int i=0;
foreach(KoShape *shape, m_selectedShapes) {
QPointF delta = m_previousPositions.at(i) + m_diff - shape->position();
if (shape->parent()) {
shape->parent()->model()->proposeMove(shape, delta);
}
tool()->canvas()->clipToDocument(shape, delta);
QPointF newPos (shape->position() + delta);
m_newPositions[i] = newPos;
shape->update();
shape->setPosition(newPos);
shape->update();
if (shape->anchor()) {
m_newOffsets[i] = shape->anchor()->offset();
}
i++;
}
tool()->canvas()->shapeManager()->selection()->setPosition(m_initialSelectionPosition + m_diff);
}
KUndo2Command* ShapeMoveStrategy::createCommand()
{
if(m_diff.x() == 0 && m_diff.y() == 0) {
return 0;
}
// get the shapes that has actually been moved
QVector<QPointF> oldPositions;
QVector<QPointF> newPositions;
QVector<QPointF> newOffsets;
QVector<QPointF> oldOffsets;
QList<KoShape*> movedShapes;
for (int i = 0; i < m_selectedShapes.count(); ++i) {
KoShape *shape = m_selectedShapes.at(i);
if (shape->position() != m_previousPositions.at(i)) {
movedShapes << shape;
oldPositions << m_previousPositions.at(i);
newPositions << m_newPositions.at(i);
if (shape->anchor()) {
oldOffsets << m_previousOffsets.at(i);
newOffsets << m_newOffsets.at(i);
}
}
}
if (movedShapes.isEmpty()) {
return 0;
}
tool()->canvas()->snapGuide()->reset();
return new KoShapeMoveCommand(movedShapes, oldPositions, newPositions, oldOffsets, newOffsets);
}
void ShapeMoveStrategy::finishInteraction(Qt::KeyboardModifiers modifiers)
{
Q_UNUSED(modifiers);
tool()->canvas()->updateCanvas(tool()->canvas()->snapGuide()->boundingRect());
}
void ShapeMoveStrategy::paint( QPainter &painter, const KoViewConverter &converter)
{
SelectionDecorator decorator (KoFlake::NoHandle, false, false);
decorator.setSelection(tool()->canvas()->shapeManager()->selection());
decorator.setHandleRadius(handleRadius());
decorator.paint(painter, converter);
}
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