Initial commit

engines/ultima/shared/gfx/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 "ultima/shared/gfx/font.h"
+#include "graphics/managed_surface.h"
+
+namespace Ultima {
+namespace Shared {
+namespace Gfx {
+
+Font::Font(const byte *data, size_t startingChar, size_t charCount) :
+	_data(data), _startingChar(startingChar), _endingChar(startingChar + charCount - 1) {}
+
+int Font::writeString(Graphics::ManagedSurface &surface, const Common::String &msg, Point &pt,
+		byte color, byte bgColor) {
+	int total = 0;
+	int xs = pt.x;
+
+	for (const char *msgP = msg.c_str(); *msgP; ++msgP, total += 8) {
+		if (*msgP == '\n') {
+			// Move to next line
+			pt.x = xs;
+			pt.y += lineHeight();
+		} else {
+			// Write out character
+			writeChar(surface, (unsigned char)*msgP, pt, color, bgColor);
+		}
+	}
+
+	return total;
+}
+
+void Font::writeChar(Graphics::ManagedSurface &surface, unsigned char c, Point &pt,
+		byte color, byte bgColor) {
+	assert(c >= _startingChar && c <= _endingChar);
+	const byte *charP = _data + (c - _startingChar) * 8;
+	Graphics::Surface s = surface.getSubArea(Common::Rect(pt.x, pt.y, pt.x + 8, pt.y + 8));
+
+	for (int y = 0; y < 8; ++y) {
+		byte *lineP = (byte *)s.getBasePtr(0, y);
+		byte lineData = charP[y];
+
+		for (int x = 0; x < 8; ++x, lineData <<= 1, ++lineP) {
+			*lineP = (lineData & 0x80) ? color : bgColor;
+		}
+	}
+
+	pt.x += charWidth(c);
+}
+
+uint Font::charWidth(char c) const {
+	return 8;
+}
+
+uint Font::lineHeight() const {
+	return 8;
+}
+
+uint Font::stringWidth(const Common::String &msg) const {
+	return msg.size() * 8;
+}
+
+} // End of namespace Gfx
+} // End of namespace Shared
+} // End of namespace Ultima