mirror of
https://bitbucket.org/smil3y/kdelibs.git
synced 2025-02-25 11:22:50 +00:00
108 lines
3.3 KiB
C++
108 lines
3.3 KiB
C++
/*
|
|
Large image displaying library.
|
|
|
|
Copyright (C) 2004,2005 Maks Orlovich (maksim@kde.org)
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
of this software and associated documentation files (the "Software"), to deal
|
|
in the Software without restriction, including without limitation the rights
|
|
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
copies of the Software, and to permit persons to whom the Software is
|
|
furnished to do so, subject to the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be included in
|
|
all copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
|
|
AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
|
|
*/
|
|
|
|
#ifndef IMAGE_FORMAT_H
|
|
#define IMAGE_FORMAT_H
|
|
|
|
#include <QColor>
|
|
#include <QVector>
|
|
#include <QImage>
|
|
#include <assert.h>
|
|
|
|
namespace khtmlImLoad {
|
|
|
|
struct ImageFormat
|
|
{
|
|
ImageFormat(): type(Image_INVALID)
|
|
{}
|
|
|
|
enum Type
|
|
{
|
|
Image_RGB_32, // 32-bit RGB
|
|
Image_ARGB_32, // 32-bit ARGB; this will be premultiplied upon reception
|
|
// so should not be used in combination with requestScanline
|
|
Image_ARGB_32_DontPremult, // 32-bit ARGB that will be kept as-is
|
|
// should only be used for interlaced images
|
|
// as it is slower
|
|
Image_Palette_8, //8-bit paletted image
|
|
Image_INVALID
|
|
} type;
|
|
|
|
int depth() const
|
|
{
|
|
switch (type)
|
|
{
|
|
case Image_RGB_32:
|
|
case Image_ARGB_32:
|
|
case Image_ARGB_32_DontPremult:
|
|
return 4;
|
|
default:
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
QImage makeImage(int width, int height) const
|
|
{
|
|
QImage toRet;
|
|
switch (type)
|
|
{
|
|
case Image_RGB_32:
|
|
toRet = QImage(width, height, QImage::Format_RGB32);
|
|
break;
|
|
case Image_ARGB_32:
|
|
toRet = QImage(width, height, QImage::Format_ARGB32_Premultiplied);
|
|
break;
|
|
case Image_ARGB_32_DontPremult:
|
|
toRet = QImage(width, height, QImage::Format_ARGB32);
|
|
break;
|
|
case Image_Palette_8:
|
|
toRet = QImage(width, height, QImage::Format_Indexed8);
|
|
// Make sure we're completely robust if the loader is buggy..
|
|
while (palette.size() < 256)
|
|
palette.append(0);
|
|
toRet.setColorTable(palette);
|
|
break;
|
|
default:
|
|
assert(false);
|
|
}
|
|
|
|
return toRet;
|
|
}
|
|
|
|
mutable QVector<QRgb> palette;
|
|
|
|
//A helper for setting up a format descriptor for 8-bit grayscale
|
|
void greyscaleSetup()
|
|
{
|
|
palette.clear();
|
|
for (int i=0; i<256; i++)
|
|
palette.append(qRgb(i,i,i));
|
|
type = ImageFormat::Image_Palette_8;
|
|
}
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|
|
// kate: indent-width 4; replace-tabs on; tab-width 4; space-indent on;
|