sledgehammer999
7 years ago
5 changed files with 22 additions and 523 deletions
@ -1,460 +0,0 @@
@@ -1,460 +0,0 @@
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/*
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* kimgio import filter for MS Windows .ico files |
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* |
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* Distributed under the terms of the LGPL |
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* Copyright (c) 2000 Malte Starostik <malte@kde.org> |
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* |
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*/ |
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#include "ico.h" |
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#include <cstring> |
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#include <cstdlib> |
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#include <algorithm> |
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#include <vector> |
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#include <QImage> |
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#include <QBitmap> |
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#include <QApplication> |
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#include <QVector> |
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#include <QDesktopWidget> |
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namespace |
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{ |
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// Global header (see http://www.daubnet.com/formats/ICO.html)
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struct IcoHeader |
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{ |
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enum Type { Icon = 1, Cursor }; |
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quint16 reserved; |
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quint16 type; |
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quint16 count; |
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}; |
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inline QDataStream& operator >>( QDataStream& s, IcoHeader& h ) |
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{ |
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return s >> h.reserved >> h.type >> h.count; |
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} |
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// Based on qt_read_dib et al. from qimage.cpp
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// (c) 1992-2002 Trolltech AS.
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struct BMP_INFOHDR |
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{ |
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static const quint32 Size = 40; |
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quint32 biSize; // size of this struct
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quint32 biWidth; // pixmap width
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quint32 biHeight; // pixmap height
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quint16 biPlanes; // should be 1
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quint16 biBitCount; // number of bits per pixel
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enum Compression { RGB = 0 }; |
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quint32 biCompression; // compression method
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quint32 biSizeImage; // size of image
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quint32 biXPelsPerMeter; // horizontal resolution
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quint32 biYPelsPerMeter; // vertical resolution
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quint32 biClrUsed; // number of colors used
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quint32 biClrImportant; // number of important colors
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}; |
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const quint32 BMP_INFOHDR::Size; |
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QDataStream& operator >>( QDataStream &s, BMP_INFOHDR &bi ) |
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{ |
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s >> bi.biSize; |
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if ( bi.biSize == BMP_INFOHDR::Size ) |
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{ |
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s >> bi.biWidth >> bi.biHeight >> bi.biPlanes >> bi.biBitCount; |
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s >> bi.biCompression >> bi.biSizeImage; |
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s >> bi.biXPelsPerMeter >> bi.biYPelsPerMeter; |
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s >> bi.biClrUsed >> bi.biClrImportant; |
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} |
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return s; |
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} |
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#if 0 |
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QDataStream &operator<<( QDataStream &s, const BMP_INFOHDR &bi ) |
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{ |
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s << bi.biSize; |
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s << bi.biWidth << bi.biHeight; |
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s << bi.biPlanes; |
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s << bi.biBitCount; |
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s << bi.biCompression; |
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s << bi.biSizeImage; |
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s << bi.biXPelsPerMeter << bi.biYPelsPerMeter; |
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s << bi.biClrUsed << bi.biClrImportant; |
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return s; |
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} |
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#endif |
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// Header for every icon in the file
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struct IconRec |
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{ |
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unsigned char width; |
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unsigned char height; |
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quint16 colors; |
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quint16 hotspotX; |
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quint16 hotspotY; |
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quint32 size; |
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quint32 offset; |
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}; |
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inline QDataStream& operator >>( QDataStream& s, IconRec& r ) |
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{ |
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return s >> r.width >> r.height >> r.colors |
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>> r.hotspotX >> r.hotspotY >> r.size >> r.offset; |
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} |
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struct LessDifference |
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{ |
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LessDifference( unsigned s, unsigned c ) |
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: size( s ), colors( c ) {} |
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bool operator ()( const IconRec& lhs, const IconRec& rhs ) const |
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{ |
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// closest size match precedes everything else
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if ( std::abs( int( lhs.width - size ) ) < |
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std::abs( int( rhs.width - size ) ) ) return true; |
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else if ( std::abs( int( lhs.width - size ) ) > |
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std::abs( int( rhs.width - size ) ) ) return false; |
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else if ( colors == 0 ) |
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{ |
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// high/true color requested
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if ( lhs.colors == 0 ) return true; |
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else if ( rhs.colors == 0 ) return false; |
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else return lhs.colors > rhs.colors; |
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} |
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else |
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{ |
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// indexed icon requested
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if ( lhs.colors == 0 && rhs.colors == 0 ) return false; |
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else if ( lhs.colors == 0 ) return false; |
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else return std::abs( int( lhs.colors - colors ) ) < |
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std::abs( int( rhs.colors - colors ) ); |
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} |
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} |
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unsigned size; |
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unsigned colors; |
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}; |
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bool loadFromDIB( QDataStream& stream, const IconRec& rec, QImage& icon ) |
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{ |
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BMP_INFOHDR header; |
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stream >> header; |
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if ( stream.atEnd() || header.biSize != BMP_INFOHDR::Size || |
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header.biSize > rec.size || |
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header.biCompression != BMP_INFOHDR::RGB || |
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( header.biBitCount != 1 && header.biBitCount != 4 && |
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header.biBitCount != 8 && header.biBitCount != 24 && |
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header.biBitCount != 32 ) ) return false; |
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unsigned paletteSize, paletteEntries; |
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if (header.biBitCount > 8) |
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{ |
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paletteEntries = 0; |
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paletteSize = 0; |
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} |
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else |
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{ |
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paletteSize = (1 << header.biBitCount); |
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paletteEntries = paletteSize; |
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if (header.biClrUsed && header.biClrUsed < paletteSize) |
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paletteEntries = header.biClrUsed; |
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} |
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// Always create a 32-bit image to get the mask right
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// Note: this is safe as rec.width, rec.height are bytes
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icon = QImage( rec.width, rec.height, QImage::Format_ARGB32 ); |
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if ( icon.isNull() ) return false; |
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QVector< QRgb > colorTable( paletteSize ); |
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colorTable.fill( QRgb( 0 ) ); |
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for ( unsigned i = 0; i < paletteEntries; ++i ) |
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{ |
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unsigned char rgb[ 4 ]; |
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stream.readRawData( reinterpret_cast< char* >( &rgb ), |
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sizeof( rgb ) ); |
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colorTable[ i ] = qRgb( rgb[ 2 ], rgb[ 1 ], rgb[ 0 ] ); |
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} |
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unsigned bpl = ( rec.width * header.biBitCount + 31 ) / 32 * 4; |
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unsigned char* buf = new unsigned char[ bpl ]; |
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for ( unsigned y = rec.height; !stream.atEnd() && y--; ) |
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{ |
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stream.readRawData( reinterpret_cast< char* >( buf ), bpl ); |
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unsigned char* pixel = buf; |
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QRgb* p = reinterpret_cast< QRgb* >( icon.scanLine(y)); |
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switch ( header.biBitCount ) |
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{ |
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case 1: |
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for ( unsigned x = 0; x < rec.width; ++x ) |
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*p++ = colorTable[ |
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( pixel[ x / 8 ] >> ( 7 - ( x & 0x07 ) ) ) & 1 ]; |
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break; |
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case 4: |
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for ( unsigned x = 0; x < rec.width; ++x ) |
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if ( x & 1 ) *p++ = colorTable[ pixel[ x / 2 ] & 0x0f ]; |
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else *p++ = colorTable[ pixel[ x / 2 ] >> 4 ]; |
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break; |
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case 8: |
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for ( unsigned x = 0; x < rec.width; ++x ) |
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*p++ = colorTable[ pixel[ x ] ]; |
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break; |
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case 24: |
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for ( unsigned x = 0; x < rec.width; ++x ) |
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*p++ = qRgb( pixel[ 3 * x + 2 ], |
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pixel[ 3 * x + 1 ], |
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pixel[ 3 * x ] ); |
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break; |
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case 32: |
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for ( unsigned x = 0; x < rec.width; ++x ) |
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*p++ = qRgba( pixel[ 4 * x + 2 ], |
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pixel[ 4 * x + 1 ], |
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pixel[ 4 * x ], |
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pixel[ 4 * x + 3] ); |
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break; |
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} |
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} |
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delete[] buf; |
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if ( header.biBitCount < 32 ) |
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{ |
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// Traditional 1-bit mask
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bpl = ( rec.width + 31 ) / 32 * 4; |
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buf = new unsigned char[ bpl ]; |
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for ( unsigned y = rec.height; y--; ) |
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{ |
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stream.readRawData( reinterpret_cast< char* >( buf ), bpl ); |
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QRgb* p = reinterpret_cast< QRgb* >(icon.scanLine(y)); |
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for ( unsigned x = 0; x < rec.width; ++x, ++p ) |
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if ( ( ( buf[ x / 8 ] >> ( 7 - ( x & 0x07 ) ) ) & 1 ) ) |
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*p &= RGB_MASK; |
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} |
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delete[] buf; |
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} |
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return true; |
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} |
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} |
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ICOHandler::ICOHandler() |
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{ |
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} |
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bool ICOHandler::canRead() const |
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{ |
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if (canRead(device())) { |
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setFormat("ico"); |
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return true; |
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} |
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return false; |
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} |
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bool ICOHandler::read(QImage *outImage) |
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{ |
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qint64 offset = device()->pos(); |
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QDataStream stream( device() ); |
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stream.setByteOrder( QDataStream::LittleEndian ); |
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IcoHeader header; |
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stream >> header; |
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if ( stream.atEnd() || !header.count || |
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( header.type != IcoHeader::Icon && header.type != IcoHeader::Cursor) ) |
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return false; |
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unsigned requestedSize = 32; |
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unsigned requestedColors = QApplication::desktop()->depth() > 8 ? 0 : QApplication::desktop()->depth(); |
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int requestedIndex = -1; |
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#if 0 |
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if ( io->parameters() ) |
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{ |
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QStringList params = QString(io->parameters()).split( ';', QString::SkipEmptyParts ); |
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QMap< QString, QString > options; |
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for ( QStringList::ConstIterator it = params.begin(); |
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it != params.end(); ++it ) |
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{ |
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QStringList tmp = (*it).split( '=', QString::SkipEmptyParts ); |
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if ( tmp.count() == 2 ) options[ tmp[ 0 ] ] = tmp[ 1 ]; |
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} |
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if ( options[ "index" ].toUInt() ) |
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requestedIndex = options[ "index" ].toUInt(); |
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if ( options[ "size" ].toUInt() ) |
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requestedSize = options[ "size" ].toUInt(); |
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if ( options[ "colors" ].toUInt() ) |
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requestedColors = options[ "colors" ].toUInt(); |
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} |
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#endif |
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typedef std::vector< IconRec > IconList; |
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IconList icons; |
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for ( unsigned i = 0; i < header.count; ++i ) |
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{ |
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if ( stream.atEnd() ) |
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return false; |
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IconRec rec; |
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stream >> rec; |
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icons.push_back( rec ); |
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} |
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IconList::const_iterator selected; |
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if (requestedIndex >= 0) { |
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selected = std::min( icons.begin() + requestedIndex, icons.end() ); |
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} else { |
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selected = std::min_element( icons.begin(), icons.end(), |
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LessDifference( requestedSize, requestedColors ) ); |
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} |
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if ( stream.atEnd() || selected == icons.end() || |
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offset + selected->offset > device()->size() ) |
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return false; |
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device()->seek( offset + selected->offset ); |
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QImage icon; |
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if ( loadFromDIB( stream, *selected, icon ) ) |
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{ |
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icon.setText( "X-Index", QString::number( selected - icons.begin() ) ); |
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if ( header.type == IcoHeader::Cursor ) |
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{ |
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icon.setText( "X-HotspotX", QString::number( selected->hotspotX ) ); |
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icon.setText( "X-HotspotY", QString::number( selected->hotspotY ) ); |
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} |
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*outImage = icon; |
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return true; |
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} |
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return false; |
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} |
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bool ICOHandler::write(const QImage &/*image*/) |
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{ |
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#if 0 |
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if (image.isNull()) |
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return; |
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QByteArray dibData; |
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QDataStream dib(dibData, QIODevice::ReadWrite); |
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dib.setByteOrder(QDataStream::LittleEndian); |
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QImage pixels = image; |
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QImage mask; |
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if (io->image().hasAlphaBuffer()) |
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mask = image.createAlphaMask(); |
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else |
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mask = image.createHeuristicMask(); |
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mask.invertPixels(); |
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for ( int y = 0; y < pixels.height(); ++y ) |
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for ( int x = 0; x < pixels.width(); ++x ) |
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if ( mask.pixel( x, y ) == 0 ) pixels.setPixel( x, y, 0 ); |
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if (!qt_write_dib(dib, pixels)) |
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return; |
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uint hdrPos = dib.device()->at(); |
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if (!qt_write_dib(dib, mask)) |
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return; |
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memmove(dibData.data() + hdrPos, dibData.data() + hdrPos + BMP_WIN + 8, dibData.size() - hdrPos - BMP_WIN - 8); |
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dibData.resize(dibData.size() - BMP_WIN - 8); |
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QDataStream ico(device()); |
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ico.setByteOrder(QDataStream::LittleEndian); |
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IcoHeader hdr; |
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hdr.reserved = 0; |
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hdr.type = Icon; |
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hdr.count = 1; |
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ico << hdr.reserved << hdr.type << hdr.count; |
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IconRec rec; |
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rec.width = image.width(); |
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rec.height = image.height(); |
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if (image.numColors() <= 16) |
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rec.colors = 16; |
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else if (image.depth() <= 8) |
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rec.colors = 256; |
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else |
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rec.colors = 0; |
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rec.hotspotX = 0; |
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rec.hotspotY = 0; |
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rec.dibSize = dibData.size(); |
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ico << rec.width << rec.height << rec.colors |
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<< rec.hotspotX << rec.hotspotY << rec.dibSize; |
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rec.dibOffset = ico.device()->at() + sizeof(rec.dibOffset); |
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ico << rec.dibOffset; |
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BMP_INFOHDR dibHeader; |
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dib.device()->at(0); |
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dib >> dibHeader; |
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dibHeader.biHeight = image.height() << 1; |
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dib.device()->at(0); |
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dib << dibHeader; |
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ico.writeRawBytes(dibData.data(), dibData.size()); |
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return true; |
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#endif |
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return false; |
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} |
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QByteArray ICOHandler::name() const |
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{ |
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return "ico"; |
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} |
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bool ICOHandler::canRead(QIODevice *device) |
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{ |
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if (!device) { |
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qWarning("ICOHandler::canRead() called with no device"); |
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return false; |
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} |
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const qint64 oldPos = device->pos(); |
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char head[8]; |
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qint64 readBytes = device->read(head, sizeof(head)); |
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const bool readOk = readBytes == sizeof(head); |
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if (device->isSequential()) { |
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while (readBytes > 0) |
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device->ungetChar(head[readBytes-- - 1]); |
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} else { |
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device->seek(oldPos); |
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} |
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if ( !readOk ) |
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return false; |
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return head[2] == '\001' && head[3] == '\000' && // type should be 1
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( head[6] == 16 || head[6] == 32 || head[6] == 64 ) && // width can only be one of those
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( head[7] == 16 || head[7] == 32 || head[7] == 64 ); // same for height
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} |
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class ICOPlugin : public QImageIOPlugin |
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{ |
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Q_PLUGIN_METADATA(IID "org.qbittorrent.ICOPlugin") |
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public: |
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QStringList keys() const; |
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Capabilities capabilities(QIODevice *device, const QByteArray &format) const; |
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QImageIOHandler *create(QIODevice *device, const QByteArray &format = QByteArray()) const; |
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}; |
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QStringList ICOPlugin::keys() const |
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{ |
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return QStringList() << "ico" << "ICO"; |
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} |
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QImageIOPlugin::Capabilities ICOPlugin::capabilities(QIODevice *device, const QByteArray &format) const |
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{ |
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if (format == "ico" || format == "ICO") |
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return Capabilities(CanRead); |
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if (!format.isEmpty()) |
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return 0; |
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if (!device->isOpen()) |
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return 0; |
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Capabilities cap; |
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if (device->isReadable() && ICOHandler::canRead(device)) |
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cap |= CanRead; |
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return cap; |
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} |
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QImageIOHandler *ICOPlugin::create(QIODevice *device, const QByteArray &format) const |
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{ |
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QImageIOHandler *handler = new ICOHandler; |
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handler->setDevice(device); |
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handler->setFormat(format); |
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return handler; |
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} |
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@ -1,52 +0,0 @@
@@ -1,52 +0,0 @@
|
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/*
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* ico.h - kimgio import filter for MS Windows .ico files |
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* |
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* Distributed under the terms of the LGPL |
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* Copyright (c) 2000 Malte Starostik <malte@kde.org> |
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* |
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*/ |
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// You can use QImageIO::setParameters() to request a specific
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// Icon out of an .ico file:
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//
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// Options consist of a name=value pair and are separated by a semicolon.
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// Available options are:
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// size=<size> select the icon that most closely matches <size> (pixels)
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// default: 32
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// colors=<num> select the icon that has <num> colors (or comes closest)
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// default: 1 << display depth or 0 (RGB) if display depth > 8
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// index=<index> select the indexth icon from the file. If this option
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// is present, the size and colors options will be ignored.
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// default: none
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// If both size and colors are given, size takes precedence.
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//
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// The old format is still supported:
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// the parameters consist of a single string in the form
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// "<size>[:<colors>]" which correspond to the options above
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//
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// If an icon was returned (i.e. the file is valid and the index option
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// if present was not out of range), the icon's index within the .ico
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// file is returned in the text tag "X-Index" of the image.
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// If the icon is in fact a cursor, its hotspot coordinates are returned
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// in the text tags "X-HotspotX" and "X-HotspotY".
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#ifndef _ICO_H_ |
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#define _ICO_H_ |
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#include <QtGui/QImageIOPlugin> |
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class ICOHandler : public QImageIOHandler |
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{ |
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public: |
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ICOHandler(); |
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bool canRead() const; |
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bool read(QImage *outImage); |
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bool write(const QImage &image); |
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QByteArray name() const; |
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static bool canRead(QIODevice *device); |
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}; |
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#endif |
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