File indexing completed on 2024-04-28 04:20:22
0001 0002 /* 0003 Copyright (c) 2003-2007 Clarence Dang <dang@kde.org> 0004 All rights reserved. 0005 0006 Redistribution and use in source and binary forms, with or without 0007 modification, are permitted provided that the following conditions 0008 are met: 0009 0010 1. Redistributions of source code must retain the above copyright 0011 notice, this list of conditions and the following disclaimer. 0012 2. Redistributions in binary form must reproduce the above copyright 0013 notice, this list of conditions and the following disclaimer in the 0014 documentation and/or other materials provided with the distribution. 0015 0016 THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 0017 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 0018 OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 0019 IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 0020 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 0021 NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 0022 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 0023 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 0024 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 0025 THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 0026 */ 0027 0028 0029 #define DEBUG_KP_PIXMAP_FX 0 0030 0031 0032 #include "kpPixmapFX.h" 0033 0034 0035 #include <QImage> 0036 #include <QPainter> 0037 #include <QPoint> 0038 #include <QRect> 0039 0040 #include "kpLogCategories.h" 0041 0042 #include "imagelib/kpColor.h" 0043 0044 //--------------------------------------------------------------------- 0045 0046 // public static 0047 QImage kpPixmapFX::getPixmapAt (const QImage &image, const QRect &rect) 0048 { 0049 return image.copy(rect); 0050 } 0051 0052 //--------------------------------------------------------------------- 0053 0054 // public static 0055 void kpPixmapFX::setPixmapAt(QImage *destPtr, const QRect &destRect, 0056 const QImage &src) 0057 { 0058 #if DEBUG_KP_PIXMAP_FX && 1 0059 qCDebug(kpLogPixmapfx) << "kpPixmapFX::setPixmapAt(destPixmap->rect=" 0060 << destPtr->rect () 0061 << ",destRect=" 0062 << destRect 0063 << ",src.rect=" 0064 << src.rect () 0065 << ")"; 0066 #endif 0067 0068 Q_ASSERT (destPtr); 0069 0070 // You cannot copy more than what you have. 0071 Q_ASSERT (destRect.width () <= src.width () && 0072 destRect.height () <= src.height ()); 0073 0074 QPainter painter(destPtr); 0075 // destination shall be source only 0076 painter.setCompositionMode(QPainter::CompositionMode_Source); 0077 painter.drawImage(destRect.topLeft(), src, QRect(0, 0, destRect.width(), destRect.height())); 0078 } 0079 0080 //--------------------------------------------------------------------- 0081 0082 // public static 0083 void kpPixmapFX::setPixmapAt (QImage *destPtr, const QPoint &destAt, 0084 const QImage &src) 0085 { 0086 kpPixmapFX::setPixmapAt (destPtr, 0087 QRect (destAt.x (), destAt.y (), 0088 src.width (), src.height ()), 0089 src); 0090 } 0091 0092 //--------------------------------------------------------------------- 0093 0094 // public static 0095 void kpPixmapFX::setPixmapAt (QImage *destPtr, int destX, int destY, 0096 const QImage &src) 0097 { 0098 kpPixmapFX::setPixmapAt (destPtr, QPoint (destX, destY), src); 0099 } 0100 0101 //--------------------------------------------------------------------- 0102 0103 // public static 0104 void kpPixmapFX::paintPixmapAt (QImage *destPtr, const QPoint &destAt, 0105 const QImage &src) 0106 { 0107 // draw image with SourceOver composition mode 0108 QPainter painter(destPtr); 0109 painter.drawImage(destAt, src); 0110 } 0111 0112 //--------------------------------------------------------------------- 0113 0114 // public static 0115 void kpPixmapFX::paintPixmapAt (QImage *destPtr, int destX, int destY, 0116 const QImage &src) 0117 { 0118 kpPixmapFX::paintPixmapAt(destPtr, QPoint (destX, destY), src); 0119 } 0120 0121 //--------------------------------------------------------------------- 0122 0123 // public static 0124 kpColor kpPixmapFX::getColorAtPixel (const QImage &img, const QPoint &at) 0125 { 0126 if (!img.valid (at.x (), at.y ())) { 0127 return kpColor::Invalid; 0128 } 0129 0130 QRgb rgba = img.pixel(at); 0131 return kpColor (rgba); 0132 } 0133 0134 //--------------------------------------------------------------------- 0135 0136 // public static 0137 kpColor kpPixmapFX::getColorAtPixel (const QImage &img, int x, int y) 0138 { 0139 return kpPixmapFX::getColorAtPixel (img, QPoint (x, y)); 0140 } 0141 0142 //---------------------------------------------------------------------