forked from openkylin/kolourpaint
143 lines
4.4 KiB
C++
143 lines
4.4 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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#define DEBUG_KP_PIXMAP_FX 0
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#include "kpPixmapFX.h"
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#include <QImage>
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#include <QPainter>
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#include <QPoint>
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#include <QRect>
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#include "kpLogCategories.h"
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#include "imagelib/kpColor.h"
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//---------------------------------------------------------------------
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// public static
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QImage kpPixmapFX::getPixmapAt (const QImage &image, const QRect &rect)
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{
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return image.copy(rect);
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}
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//---------------------------------------------------------------------
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// public static
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void kpPixmapFX::setPixmapAt(QImage *destPtr, const QRect &destRect,
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const QImage &src)
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{
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#if DEBUG_KP_PIXMAP_FX && 1
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qCDebug(kpLogPixmapfx) << "kpPixmapFX::setPixmapAt(destPixmap->rect="
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<< destPtr->rect ()
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<< ",destRect="
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<< destRect
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<< ",src.rect="
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<< src.rect ()
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<< ")";
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#endif
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Q_ASSERT (destPtr);
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// You cannot copy more than what you have.
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Q_ASSERT (destRect.width () <= src.width () &&
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destRect.height () <= src.height ());
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QPainter painter(destPtr);
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// destination shall be source only
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painter.setCompositionMode(QPainter::CompositionMode_Source);
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painter.drawImage(destRect.topLeft(), src, QRect(0, 0, destRect.width(), destRect.height()));
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}
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//---------------------------------------------------------------------
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// public static
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void kpPixmapFX::setPixmapAt (QImage *destPtr, const QPoint &destAt,
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const QImage &src)
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{
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kpPixmapFX::setPixmapAt (destPtr,
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QRect (destAt.x (), destAt.y (),
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src.width (), src.height ()),
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src);
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}
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//---------------------------------------------------------------------
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// public static
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void kpPixmapFX::setPixmapAt (QImage *destPtr, int destX, int destY,
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const QImage &src)
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{
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kpPixmapFX::setPixmapAt (destPtr, QPoint (destX, destY), src);
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}
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//---------------------------------------------------------------------
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// public static
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void kpPixmapFX::paintPixmapAt (QImage *destPtr, const QPoint &destAt,
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const QImage &src)
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{
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// draw image with SourceOver composition mode
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QPainter painter(destPtr);
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painter.drawImage(destAt, src);
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}
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//---------------------------------------------------------------------
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// public static
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void kpPixmapFX::paintPixmapAt (QImage *destPtr, int destX, int destY,
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const QImage &src)
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{
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kpPixmapFX::paintPixmapAt(destPtr, QPoint (destX, destY), src);
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}
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//---------------------------------------------------------------------
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// public static
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kpColor kpPixmapFX::getColorAtPixel (const QImage &img, const QPoint &at)
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{
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if (!img.valid (at.x (), at.y ())) {
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return kpColor::Invalid;
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}
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QRgb rgba = img.pixel(at);
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return kpColor (rgba);
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}
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//---------------------------------------------------------------------
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// public static
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kpColor kpPixmapFX::getColorAtPixel (const QImage &img, int x, int y)
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{
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return kpPixmapFX::getColorAtPixel (img, QPoint (x, y));
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}
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//---------------------------------------------------------------------
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