ACCESS: Split font code into a separate file

1 files changed, 169 insertions, 0 deletions

diff --git a/engines/access/font.cpp b/engines/access/font.cpp
new file mode 100644
index 0000000000..d5ad3b3d24
--- /dev/null
+++ b/engines/access/font.cpp
@@ -0,0 +1,169 @@
+/* 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 2
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "access/font.h"
+
+namespace Access {
+
+byte Font::_fontColors[4];
+
+Font::Font() {
+}
+
+Font::~Font() {
+	for (uint i = 0; i < _chars.size(); ++i)
+		_chars[i].free();
+}
+
+void Font::load(const int *fontIndex, const byte *fontData) {
+	assert(_chars.size() == 0);
+	int count = fontIndex[0];
+	_bitWidth = fontIndex[1];
+	_height = fontIndex[2];
+
+	_chars.resize(count);
+
+	for (int i = 0; i < count; ++i) {
+		const byte *pData = fontData + fontIndex[i + 3];
+		_chars[i].create(*pData++, _height, Graphics::PixelFormat::createFormatCLUT8());
+
+		for (int y = 0; y < _height; ++y) {
+			int bitsLeft = 0;
+			byte srcByte = 0;
+			byte pixel;
+			
+			byte *pDest = (byte *)_chars[i].getBasePtr(0, y);
+			for (int x = 0; x < _chars[i].w; ++x, ++pDest) {
+				// Get the pixel
+				pixel = 0;
+				for (int pixelCtr = 0; pixelCtr < _bitWidth; ++pixelCtr, --bitsLeft) {
+					// No bits in current byte left, so get next byte
+					if (bitsLeft == 0) {
+						bitsLeft = 8;
+						srcByte = *pData++;
+					}
+
+					pixel = (pixel << 1) | (srcByte >> 7);
+					srcByte <<= 1;
+				}
+
+				// Write out the pixel
+				*pDest = pixel;
+			}
+		}
+	}
+}
+
+int Font::charWidth(char c) {
+	return _chars[c - ' '].w;
+}
+
+int Font::stringWidth(const Common::String &msg) {
+	int total = 0;
+
+	for (const char *c = msg.c_str(); *c != '\0'; ++c)
+		total += charWidth(*c);
+
+	return total;
+}
+
+bool Font::getLine(Common::String &s, int maxWidth, Common::String &line, int &width) {
+	assert(maxWidth > 0);
+	width = 0;
+	const char *src = s.c_str();
+	char c;
+
+	while ((c = *src) != '\0') {
+		if (c == '\r') {
+			// End of line, so return calculated line
+			line = Common::String(s.c_str(), src - 1);
+			s = Common::String(src + 1);
+			return false;
+		}
+
+		++src;
+		width += charWidth(c);
+		if (width < maxWidth)
+			continue;
+
+		// Reached maximum allowed size
+		// If this was the last character of the string, let it go
+		if (*src == '\0')
+			break;
+		
+		// Work backwards to find space at the start of the current word 
+		// as a point to split the line on
+		while (src >= s.c_str() && *src != ' ') {
+			width -= charWidth(*src);
+			--src;
+		}
+		if (src < s.c_str())
+			error("Could not fit line");
+
+		// Split the line around the space
+		line = Common::String(s.c_str(), src);
+		s = Common::String(src + 1);
+		return false;
+	}
+
+	// Return entire string
+	line = s;
+	s = Common::String();
+	return true;
+}
+
+void Font::drawString(Graphics::Surface *s, const Common::String &msg, const Common::Point &pt) {
+	Common::Point currPt = pt;
+	const char *msgP = msg.c_str();
+
+	while (*msgP) {
+		currPt.x += drawChar(s, *msgP, currPt);
+		++msgP;
+	}
+}
+
+int Font::drawChar(Graphics::Surface *s, char c, Common::Point &pt) {
+	Graphics::Surface &ch = _chars[c - ' '];
+
+	// Loop through the lines of the character
+	for (int y = 0; y < ch.h; ++y) {
+		byte *pSrc = (byte *)ch.getBasePtr(0, y);
+		byte *pDest = (byte *)s->getBasePtr(pt.x, pt.y + y);
+
+		// Loop through the horizontal pixels of the line
+		for (int x = 0; x < ch.w; ++x, ++pSrc, ++pDest) {
+			if (*pSrc != 0)
+				*pDest = _fontColors[*pSrc];
+		}
+	}
+
+	return ch.w;
+}
+
+/*------------------------------------------------------------------------*/
+
+FontManager::FontManager() {
+	_printMaxX = 0;
+	Common::fill(&Font::_fontColors[0], &Font::_fontColors[4], 0);
+}
+
+} // End of namespace Access