File indexing completed on 2024-05-19 15:12:19

0001 /*
0002     Large image displaying library.
0003 
0004     Copyright (C) 2004,2005 Maks Orlovich (maksim@kde.org)
0005 
0006     Permission is hereby granted, free of charge, to any person obtaining a copy
0007     of this software and associated documentation files (the "Software"), to deal
0008     in the Software without restriction, including without limitation the rights
0009     to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
0010     copies of the Software, and to permit persons to whom the Software is
0011     furnished to do so, subject to the following conditions:
0012 
0013     The above copyright notice and this permission notice shall be included in
0014     all copies or substantial portions of the Software.
0015 
0016     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
0017     IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
0018     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
0019     AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
0020     AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
0021     CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
0022 
0023 */
0024 #ifndef RAW_IMAGE_PLANE_H
0025 #define RAW_IMAGE_PLANE_H
0026 
0027 #include "imageplane.h"
0028 #include <cstring>
0029 
0030 namespace khtmlImLoad
0031 {
0032 
0033 /**
0034  A raw image plane merely contains a QImage.
0035 */
0036 class RawImagePlane: public ImagePlane
0037 {
0038 public:
0039     QImage image;
0040     unsigned char *versions; //Versions of scanlines --- node that this is is padded to be of width / by 64
0041 
0042     RawImagePlane(unsigned int _width, unsigned int _height, char initialVer = 0):
0043         ImagePlane(_width, _height)
0044     {
0045         versions = new unsigned char[tilesHeight * Tile::TileSize];
0046         std::memset(versions, initialVer, tilesHeight * Tile::TileSize);
0047     }
0048 
0049     ~RawImagePlane()
0050     {
0051         delete[] versions;
0052     }
0053 
0054     void flushCache() override
0055     {} // Nothing caches
0056 
0057     /**
0058      Returns true if the given pixmap tile is up-to-date.
0059      Note that this should compare the information in the pixmap with ideal the
0060      up-to-date image using the decoding information thus far, and not
0061      with the state of the image proper. (Which might not even be in memory)
0062     */
0063     virtual bool isUpToDate(unsigned int tileX, unsigned int tileY,
0064                             PixmapTile *tile) override;
0065 
0066     /**
0067      Ensures that the given pixmap tile is up-to-date.
0068     */
0069     virtual void ensureUpToDate(unsigned int tileX, unsigned int tileY,
0070                                 PixmapTile *tile) override;
0071 
0072 };
0073 
0074 }
0075 
0076 #endif