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tileset.cpp

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00001 /*
00002  * Copyright 2007 Matthew Woehlke <mw_triad@users.sourceforge.net>
00003  *
00004  * This library is free software; you can redistribute it and/or
00005  * modify it under the terms of the GNU Library General Public
00006  * License version 2 as published by the Free Software Foundation.
00007  *
00008  * This library is distributed in the hope that it will be useful,
00009  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00010  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00011  * Library General Public License for more details.
00012  *
00013  * You should have received a copy of the GNU Library General Public License
00014  * along with this library; see the file COPYING.LIB.  If not, write to
00015  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00016  * Boston, MA 02110-1301, USA.
00017  */
00018 
00019 #include <QtGui/QPainter>
00020 
00021 #include "tileset.h"
00022 
00023 void TileSet::initPixmap(int s, const QPixmap &pix, int w, int h, const QRect &region)
00024 {
00025     if (w != region.width() || h != region.height()) {
00026         QPixmap tile = pix.copy(region);
00027         _pixmap[s] = QPixmap(w, h);
00028         _pixmap[s].fill(QColor(0,0,0,0));
00029         QPainter p(&_pixmap[s]);
00030         p.drawTiledPixmap(0, 0, w, h, tile);
00031     }
00032     else {
00033         _pixmap[s] = pix.copy(region);
00034     }
00035 }
00036 
00037 TileSet::TileSet(const QPixmap &pix, int w1, int h1, int w2, int h2)
00038     : _w1(w1), _h1(h1)
00039 {
00040     if (pix.isNull())
00041         return;
00042 
00043     _w3 = pix.width() - (w1 + w2);
00044     _h3 = pix.height() - (h1 + h2);
00045     int w = w2; while (w < 32 && w2 > 0) w += w2;
00046     int h = h2; while (h < 32 && h2 > 0) h += h2;
00047 
00048     initPixmap(0, pix, _w1, _h1, QRect(0,      0,      _w1, _h1));
00049     initPixmap(1, pix,  w,  _h1, QRect(_w1,    0,       w2, _h1));
00050     initPixmap(2, pix, _w3, _h1, QRect(_w1+w2, 0,      _w3, _h1));
00051     initPixmap(3, pix, _w1,  h,  QRect(0,      _h1,    _w1,  h2));
00052     initPixmap(4, pix,  w,   h,  QRect(_w1,    _h1,     w2,  h2));
00053     initPixmap(5, pix, _w3,  h,  QRect(_w1+w2, _h1,    _w3,  h2));
00054     initPixmap(6, pix, _w1, _h3, QRect(0,      _h1+h2, _w1, _h3));
00055     initPixmap(7, pix,  w,  _h3, QRect(_w1,    _h1+h2,  w2, _h3));
00056     initPixmap(8, pix, _w3, _h3, QRect(_w1+w2, _h1+h2, _w3, _h3));
00057 }
00058 
00059 TileSet::TileSet(const QPixmap &pix, int w1, int h1, int w3, int h3, int x1, int y1, int w2, int h2)
00060     : _w1(w1), _h1(h1), _w3(w3), _h3(h3)
00061 {
00062     if (pix.isNull())
00063         return;
00064 
00065     int x2 = pix.width() - _w3;
00066     int y2 = pix.height() - _h3;
00067     int w = w2; while (w < 32 && w2 > 0) w += w2;
00068     int h = h2; while (h < 32 && h2 > 0) h += h2;
00069 
00070     initPixmap(0, pix, _w1, _h1, QRect(0,  0,  _w1, _h1));
00071     initPixmap(1, pix,  w,  _h1, QRect(x1, 0,   w2, _h1));
00072     initPixmap(2, pix, _w3, _h1, QRect(x2, 0,  _w3, _h1));
00073     initPixmap(3, pix, _w1,  h,  QRect(0,  y1, _w1,  h2));
00074     initPixmap(4, pix,  w,   h,  QRect(x1, y1,  w2,  h2));
00075     initPixmap(5, pix, _w3,  h,  QRect(x2, y1, _w3,  h2));
00076     initPixmap(6, pix, _w1, _h3, QRect(0,  y2, _w1, _h3));
00077     initPixmap(7, pix,  w,  _h3, QRect(x1, y2,  w2, _h3));
00078     initPixmap(8, pix, _w3, _h3, QRect(x2, y2, _w3, _h3));
00079 }
00080 
00081 TileSet::TileSet(const TileSet &other)
00082     : _w1(other._w1), _h1(other._h1), _w3(other._w3), _h3(other._h3)
00083 {
00084     for (int i=0; i<9; i++) {
00085         _pixmap[i] = other._pixmap[i];
00086     }
00087 }
00088 
00089 TileSet& TileSet::operator=(const TileSet &other)
00090 {
00091     _w1 = other._w1;
00092     _w3 = other._w3;
00093     _h1 = other._h1;
00094     _h3 = other._h3;
00095     for (int i=0; i<9; i++) {
00096         _pixmap[i] = other._pixmap[i];
00097     }
00098     return *this;
00099 }
00100 
00101 inline bool bits(TileSet::Tiles flags, TileSet::Tiles testFlags)
00102 {
00103     return (flags & testFlags) == testFlags;
00104 }
00105 
00106 void TileSet::render(const QRect &r, QPainter *p, Tiles t) const
00107 {
00108     if (_pixmap[0].isNull())
00109         return;
00110 
00111     int x0, y0, w, h;
00112     r.getRect(&x0, &y0, &w, &h);
00113     w -= _w1 + _w3;
00114     h -= _h1 + _h3;
00115     int x1 = x0 + _w1;
00116     int x2 = x1 + w;
00117     int y1 = y0 + _h1;
00118     int y2 = y1 + h;
00119 
00120     if (bits(t,    Top|Left))  p->drawPixmap(x0, y0, _pixmap[0]);
00121     if (bits(t,    Top|Right)) p->drawPixmap(x2, y0, _pixmap[2]);
00122     if (bits(t, Bottom|Left))  p->drawPixmap(x0, y2, _pixmap[6]);
00123     if (bits(t, Bottom|Right)) p->drawPixmap(x2, y2, _pixmap[8]);
00124 
00125     if (t & Top)    p->drawTiledPixmap(x1, y0, w, _h1, _pixmap[1]);
00126     if (t & Bottom) p->drawTiledPixmap(x1, y2, w, _h3, _pixmap[7]);
00127     if (t & Left)   p->drawTiledPixmap(x0, y1, _w1, h, _pixmap[3]);
00128     if (t & Right)  p->drawTiledPixmap(x2, y1, _w3, h, _pixmap[5]);
00129 
00130     if (t & Center) p->drawTiledPixmap(x1, y1, w, h, _pixmap[4]);
00131 }

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