Initial commit

engines/sci/graphics/fontsjis.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 "sci/sci.h"
+#include "sci/engine/state.h"
+#include "sci/graphics/drivers/gfxdriver.h"
+#include "sci/graphics/screen.h"
+#include "sci/graphics/scifont.h"
+#include "sci/graphics/fontsjis.h"
+
+namespace Sci {
+
+GfxFontSjis::GfxFontSjis(GfxScreen *screen, GuiResourceId resourceId)
+	: _resourceId(resourceId), _screen(screen) {
+	assert(resourceId != -1);
+
+	if (!_screen->getUpscaledHires() && !_screen->gfxDriver()->driverBasedTextRendering())
+		error("I don't want to initialize, when not being in upscaled hires mode");
+
+	_commonFont = Graphics::FontSJIS::createFont(Common::kPlatformPC98);
+
+	if (!_commonFont)
+		error("Could not load ScummVM's 'SJIS.FNT'");
+}
+
+GfxFontSjis::~GfxFontSjis() {
+	delete _commonFont;
+}
+
+GuiResourceId GfxFontSjis::getResourceId() {
+	return _resourceId;
+}
+
+// Returns true for first byte of double byte characters
+bool GfxFontSjis::isDoubleByte(uint16 chr) {
+	if (((chr >= 0x81) && (chr <= 0x9F)) || ((chr >= 0xE0) && (chr <= 0xEF)))
+		return true;
+	return false;
+}
+
+// We can do >>1, because returned char width/height is 8 or 16 exclusively. Font returns hires size, we need lowres
+byte GfxFontSjis::getHeight() {
+	return _commonFont->getFontHeight() >> 1;
+}
+
+byte GfxFontSjis::getCharWidth(uint16 chr) {
+	return _commonFont->getCharWidth(chr) >> 1;
+
+}
+void GfxFontSjis::draw(uint16 chr, int16 top, int16 left, byte color, bool greyedOutput) {
+	// TODO: Check, if character fits on screen - if it doesn't we need to skip it
+	//  Normally SCI cuts the character and draws the part that fits, but the common SJIS doesn't support that
+
+	// According to LordHoto the PC98 ROM actually split the screen into 40x25 kanji chars and was only able to place
+	//  them there. So removing the lower 4 bits of the horizontal coordinate puts them into the correct position (it seems).
+	//  If we don't do this, the characters will be slightly to the right, caused by "GetLongest()" inside GfxText16 that
+	//  leaves the last character that is causing a split into a new line within the current line instead of removing it.
+	//  That way the result will actually be too long (not our fault, sierra sci does it the same way)
+	_screen->putKanjiChar(_commonFont, left & 0xFFC, top, chr, color);
+}
+
+} // End of namespace Sci