File indexing completed on 2024-05-19 11:38:33

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 PLANE_H
0025 #define PLANE_H
0026 
0027 #include "tile.h"
0028 
0029 namespace khtmlImLoad
0030 {
0031 
0032 /**
0033  All picture data, whether image or pixmap-related, logically
0034  denotes a plane: logically, some collection of tiles, which has
0035  some geometry. This class incorporates this abstraction, and
0036  provides helper methods for dealing with the tiles
0037 */
0038 class Plane
0039 {
0040 public:
0041     unsigned int width;  //width  in pixels
0042     unsigned int height; //height in pixels
0043     unsigned int tilesWidth;  //width  in tiles
0044     unsigned int tilesHeight; //height in tiles
0045 
0046     Plane(unsigned int _width, unsigned int _height)
0047     {
0048         width   = _width;
0049         height  = _height;
0050         tilesWidth  = (width  + Tile::TileSize - 1) / Tile::TileSize;
0051         tilesHeight = (height + Tile::TileSize - 1) / Tile::TileSize;
0052     }
0053 
0054     unsigned int tileWidth(unsigned int tileX)
0055     {
0056         if (tileX == (tilesWidth - 1)) {
0057             return width - tileX * Tile::TileSize;
0058         }
0059         return Tile::TileSize;
0060     }
0061 
0062     unsigned int tileHeight(unsigned int tileY)
0063     {
0064         if (tileY == (tilesHeight - 1)) {
0065             return height - tileY * Tile::TileSize;
0066         }
0067         return Tile::TileSize;
0068     }
0069 
0070 };
0071 
0072 }
0073 
0074 #endif