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/* This file is part of the KDE project
* Copyright (C) 2008-2009 Jan Hambrecht <jaham@gmx.net>
*
* 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 "KoSnapProxy.h"
#include "KoSnapGuide.h"
#include "KoCanvasBase.h"
#include "KoShapeManager.h"
#include "KoPathShape.h"
#include "KoPathPoint.h"
#include <KoSnapData.h>
KoSnapProxy::KoSnapProxy(KoSnapGuide * snapGuide)
: m_snapGuide(snapGuide)
{
}
QList<QPointF> KoSnapProxy::pointsInRect(const QRectF &rect)
{
QList<QPointF> points;
QList<KoShape*> shapes = shapesInRect(rect);
foreach(KoShape * shape, shapes) {
foreach(const QPointF & point, pointsFromShape(shape)) {
if (rect.contains(point))
points.append(point);
}
}
return points;
}
QList<KoShape*> KoSnapProxy::shapesInRect(const QRectF &rect, bool omitEditedShape)
{
QList<KoShape*> shapes = m_snapGuide->canvas()->shapeManager()->shapesAt(rect);
foreach(KoShape * shape, m_snapGuide->ignoredShapes()) {
int index = shapes.indexOf(shape);
if (index >= 0)
shapes.removeAt(index);
}
if (! omitEditedShape && m_snapGuide->editedShape()) {
QRectF bound = m_snapGuide->editedShape()->boundingRect();
if (rect.intersects(bound) || rect.contains(bound))
shapes.append(m_snapGuide->editedShape());
}
return shapes;
}
QList<QPointF> KoSnapProxy::pointsFromShape(KoShape * shape)
{
QList<QPointF> snapPoints;
// no snapping to hidden shapes
if (! shape->isVisible(true))
return snapPoints;
// return the special snap points of the shape
snapPoints += shape->snapData().snapPoints();
KoPathShape * path = dynamic_cast<KoPathShape*>(shape);
if (path) {
QTransform m = path->absoluteTransformation(0);
QList<KoPathPoint*> ignoredPoints = m_snapGuide->ignoredPathPoints();
int subpathCount = path->subpathCount();
for (int subpathIndex = 0; subpathIndex < subpathCount; ++subpathIndex) {
int pointCount = path->subpathPointCount(subpathIndex);
for (int pointIndex = 0; pointIndex < pointCount; ++pointIndex) {
KoPathPoint * p = path->pointByIndex(KoPathPointIndex(subpathIndex, pointIndex));
if (! p || ignoredPoints.contains(p))
continue;
snapPoints.append(m.map(p->point()));
}
}
}
else
{
// add the bounding box corners as default snap points
QRectF bbox = shape->boundingRect();
snapPoints.append(bbox.topLeft());
snapPoints.append(bbox.topRight());
snapPoints.append(bbox.bottomRight());
snapPoints.append(bbox.bottomLeft());
}
return snapPoints;
}
QList<KoPathSegment> KoSnapProxy::segmentsInRect(const QRectF &rect)
{
QList<KoShape*> shapes = shapesInRect(rect, true);
QList<KoPathPoint*> ignoredPoints = m_snapGuide->ignoredPathPoints();
QList<KoPathSegment> segments;
foreach(KoShape * shape, shapes) {
QList<KoPathSegment> shapeSegments;
QRectF rectOnShape = shape->documentToShape(rect);
KoPathShape * path = dynamic_cast<KoPathShape*>(shape);
if (path) {
shapeSegments = path->segmentsAt(rectOnShape);
} else {
foreach(const KoPathSegment & s, shape->snapData().snapSegments()) {
QRectF controlRect = s.controlPointRect();
if (! rect.intersects(controlRect) && ! controlRect.contains(rect))
continue;
QRectF bound = s.boundingRect();
if (! rect.intersects(bound) && ! bound.contains(rect))
continue;
shapeSegments.append(s);
}
}
QTransform m = shape->absoluteTransformation(0);
// transform segments to document coordinates
foreach(const KoPathSegment & s, shapeSegments) {
if (ignoredPoints.contains(s.first()) || ignoredPoints.contains(s.second()))
continue;
segments.append(s.mapped(m));
}
}
return segments;
}
QList<KoShape*> KoSnapProxy::shapes(bool omitEditedShape)
{
QList<KoShape*> allShapes = m_snapGuide->canvas()->shapeManager()->shapes();
QList<KoShape*> filteredShapes;
QList<KoShape*> ignoredShapes = m_snapGuide->ignoredShapes();
// filter all hidden and ignored shapes
foreach(KoShape * shape, allShapes) {
if (! shape->isVisible(true))
continue;
if (ignoredShapes.contains(shape))
continue;
filteredShapes.append(shape);
}
if (! omitEditedShape && m_snapGuide->editedShape())
filteredShapes.append(m_snapGuide->editedShape());
return filteredShapes;
}
KoCanvasBase * KoSnapProxy::canvas()
{
return m_snapGuide->canvas();
}
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