79 lines
2.4 KiB
C++
79 lines
2.4 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "common/file.h"
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#include "image/bmp.h"
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#include "mm/shared/utils/bitmap_font.h"
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namespace MM {
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bool BitmapFont::load(const Common::Path &filename) {
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Image::BitmapDecoder decoder;
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Common::File f;
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_startingChar = ' ';
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if (!f.open(filename))
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error("Could not open font");
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if (!decoder.loadStream(f))
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error("Could not decode font");
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const Graphics::Surface &src = *decoder.getSurface();
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assert(src.format.bytesPerPixel == 1);
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assert((src.w % 8) == 0);
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assert((src.h % 8) == 0);
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// Set up a characters array
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_chars.resize(97 - 32);
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// Iterate through loading characters
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Common::Rect r(8, 8);
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int charsPerRow = src.w / 8;
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for (uint idx = 0; idx < _chars.size(); ++idx) {
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r.moveTo((idx % charsPerRow) * 8, (idx / charsPerRow) * 8);
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Common::Rect charBounds(r.left, r.top, r.left + 8, r.bottom);
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_chars[idx].create(8, 8, Graphics::PixelFormat::createFormatCLUT8());
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_chars[idx].transBlitFrom(src, charBounds, Common::Rect(0, 0, 8, 8));
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}
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return true;
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}
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void BitmapFont::drawChar(Graphics::Surface *dst, uint32 chr, int x, int y, uint32 color) const {
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// Get the fg/bg color. When the character is >= 128,
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// the colors are reversed from normal
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byte fgColor = (chr < 128) ? color : 0;
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byte bgColor = (chr < 128) ? 0 : color;
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chr &= 0x7f;
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const Graphics::ManagedSurface &c = _chars[chr - _startingChar];
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for (int yCtr = 0; yCtr < c.h; ++yCtr) {
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const byte *srcP = (const byte *)c.getBasePtr(0, yCtr);
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for (int xCtr = 0; xCtr < c.w; ++xCtr, ++srcP) {
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dst->hLine(x + xCtr, y + yCtr, x + xCtr,
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*srcP ? bgColor : fgColor);
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}
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}
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}
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} // namespace MM
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