forked from openkylin/kolourpaint
82 lines
3.2 KiB
C++
82 lines
3.2 KiB
C++
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/*
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Copyright (c) 2003-2007 Clarence Dang <dang@kde.org>
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "kpToolFlowPixmapBase.h"
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#include "imagelib/kpColor.h"
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#include "document/kpDocument.h"
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#include "imagelib/kpPainter.h"
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#include "pixmapfx/kpPixmapFX.h"
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#include "commands/tools/flow/kpToolFlowCommand.h"
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//---------------------------------------------------------------------
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kpToolFlowPixmapBase::kpToolFlowPixmapBase (const QString &text, const QString &description,
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int key,
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kpToolEnvironment *environ, QObject *parent, const QString &name)
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: kpToolFlowBase (text, description, key, environ, parent, name)
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{
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}
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//---------------------------------------------------------------------
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QRect kpToolFlowPixmapBase::drawLine (const QPoint &thisPoint, const QPoint &lastPoint)
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{
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QRect docRect = kpPainter::normalizedRect(thisPoint, lastPoint);
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docRect = neededRect (docRect, qMax (brushWidth (), brushHeight ()));
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kpImage image = document ()->getImageAt (docRect);
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QList <QPoint> points = kpPainter::interpolatePoints (lastPoint, thisPoint,
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brushIsDiagonalLine ());
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foreach (const QPoint &p, points)
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{
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const QPoint point =
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hotRectForMousePointAndBrushWidthHeight(p, brushWidth(), brushHeight())
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.topLeft() - docRect.topLeft();
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// OPT: This may be redrawing pixels that were drawn on a previous
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// iteration, since the brush is usually bigger than 1 pixel.
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// Maybe we could use QRegion to determine all the non-intersecting
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// regions and only draw each region once.
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//
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// Try this at least for the easy case of the Eraser, which has
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// square, simply-filled brushes. Profiling needs to be done as
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// QRegion is known to be a CPU hog.
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brushDrawFunction () (&image, point, brushDrawFunctionData ());
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}
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document ()->setImageAt (image, docRect.topLeft ());
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return docRect;
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}
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//---------------------------------------------------------------------
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