Initial commit

engines/qdengine/system/graphics/gr_font.cpp

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "common/file.h"
+#include "common/memstream.h"
+#include "common/stream.h"
+#include "common/textconsole.h"
+
+#include "qdengine/qd_fwd.h"
+#include "qdengine/system/graphics/gr_dispatcher.h"
+#include "qdengine/system/graphics/gr_font.h"
+#include "qdengine/qdcore/qd_file_manager.h"
+
+
+namespace QDEngine {
+
+grFont::grFont() : _alpha_buffer(NULL) {
+	_size_x = _size_y = 0;
+	_alpha_buffer_sx = _alpha_buffer_sy = 0;
+
+	_chars.reserve(256);
+}
+
+grFont::~grFont() {
+	delete[] _alpha_buffer;
+}
+
+bool grFont::load(const Common::Path &fname) {
+	Common::String str(fname.toString());
+	str += ".tga";
+
+	Common::File file;
+	file.open(Common::Path(str));
+
+	if (load_alpha(&file)) {
+		str = fname.toString();
+		str += ".idx";
+
+		file.open(Common::Path(str));
+		if (load_index(&file))
+			return true;
+	}
+	return false;
+}
+
+bool grFont::load_index(Common::SeekableReadStream *fh) {
+	Common::String buf = fh->readString();
+	char *pos = buf.begin();
+
+	int num_ch, sx, sy;
+
+	sx = strtol(pos, &pos, 0);
+	sy = strtol(pos, &pos, 0);
+	num_ch = strtol(pos, &pos, 0);
+
+	grFontChar chr;
+	for (int i = 0; i < num_ch; i++) {
+		int x, y;
+
+		chr._code = strtol(pos, &pos, 0);
+		x = strtol(pos, &pos, 0);
+		y = strtol(pos, &pos, 0);
+		sx = strtol(pos, &pos, 0);
+		sy = strtol(pos, &pos, 0);
+
+		chr._region = grScreenRegion(x, y, sx, sy);
+		_chars.push_back(chr);
+
+		if (sx > _size_x) _size_x = sx;
+		if (sy > _size_y) _size_y = sy;
+	};
+
+	return true;
+}
+
+bool grFont::load_alpha(Common::SeekableReadStream *fh) {
+	byte header[18];
+	fh->read(header, 18);
+
+	if (header[0])
+		return false;
+
+	if (header[1])
+		return false;
+
+	if (header[2] != 2 && header[2] != 3)
+		return false;
+
+	int sx = _alpha_buffer_sx = header[12] + (header[13] << 8);
+	int sy = _alpha_buffer_sy = header[14] + (header[15] << 8);
+
+	int colors = header[16];
+	int flags = header[17];
+
+	int ssx = sx * colors / 8;
+
+	_alpha_buffer = new byte[ssx * sy];
+
+	if (!(flags & 0x20)) {
+		int idx = (sy - 1) * ssx;
+		for (int i = 0; i < sy; i++) {
+			fh->read(_alpha_buffer + idx, ssx);
+			idx -= ssx;
+		}
+	} else
+		fh->read(_alpha_buffer, ssx * sy);
+
+	return true;
+}
+
+} // namespace QDEngine