added nut renderer, there is bug with font width, fix later

svn-id: r6126

1 files changed, 233 insertions, 0 deletions

diff --git a/scumm/nut_renderer.cpp b/scumm/nut_renderer.cpp
new file mode 100644
index 0000000000..98fbc6a22e
--- /dev/null
+++ b/scumm/nut_renderer.cpp
@@ -0,0 +1,233 @@
+/* ScummVM - Scumm Interpreter
+ * Copyright (C) 2001  Ludvig Strigeus
+ * Copyright (C) 2001/2002 The ScummVM project
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * $Header$
+ */
+
+#include "stdafx.h"
+#include "engine.h"
+#include "nut_renderer.h"
+
+NutRenderer::NutRenderer() {
+	_initialized = false;
+	_loaded = false;
+	_dataSrc = NULL;
+}
+
+NutRenderer::~NutRenderer() {
+	if (_dataSrc != NULL)
+		free(_dataSrc);
+}
+
+void NutRenderer::decodeCodec44(byte *dst, byte *src, uint32 length) {
+	byte val;
+	uint16 size_line;
+	uint16 num;
+
+	do {
+		size_line = READ_LE_UINT16(src);
+		src += 2;
+		length -= 2;
+
+		for (; size_line != 0;) {
+			num = *src++;
+			val = *src++;
+			memset(dst, val, num);
+			dst += num;
+			length -= 2;
+			size_line -= 2;
+			if (size_line == 0) break;
+
+			num = READ_LE_UINT16(src) + 1;
+			src += 2;
+			memcpy(dst, src, num);
+			dst += num;
+			src += num;
+			length -= num + 2;
+			size_line -= num + 2;
+
+		}
+		dst--;
+
+	} while (length > 1);
+}
+
+void NutRenderer::bindDisplay(byte *dst, int32 width, int32 height, int32 pitch) {
+	debug(2,  "NutRenderer::init() called");
+	if (_initialized == true) {
+		debug(2, "NutRenderer::init() Already initialized, ok, changing...");
+	}
+
+	_dstPtr = dst;
+	_dstWidth = width;
+	_dstHeight = height;
+	_dstPitch = pitch;
+
+	_initialized = true;
+}
+
+bool NutRenderer::loadFont(char *filename, char *dir) {
+	debug(2,  "NutRenderer::loadFont() called");
+	if (_loaded == true) {
+		debug(2, "NutRenderer::loadFont() Font already loaded, ok, loading...");
+	}
+	
+	File file;
+	file.open(filename, dir);
+	if (file.isOpen() == false) {
+		debug(2, "NutRenderer::loadFont() Can't open font file: %s", filename);
+		return false;
+	}
+
+	uint32 tag = file.readUint32BE();
+	if (tag != 'ANIM') {
+		debug(2, "NutRenderer::loadFont() there is no ANIM chunk in font header");
+		return false;
+	}
+
+	uint32 length = file.readUint32BE();
+	_dataSrc = (byte *)malloc(length);
+	file.read(_dataSrc, length);
+	file.close();
+
+	if (READ_BE_UINT32(_dataSrc) != 'AHDR') {
+		debug(2, "NutRenderer::loadFont() there is no AHDR chunk in font header");
+		free(_dataSrc);
+		return false;
+	}
+	
+	int32 l;
+	uint32 offset = READ_BE_UINT32(_dataSrc + 4) + 8;
+	for (l = 0; l < 256; l++) {
+		if (READ_BE_UINT32(_dataSrc + offset) == 'FRME') {
+			offset += 8;
+			if (READ_BE_UINT32(_dataSrc + offset) == 'FOBJ') {
+				_offsets[l] = offset + 8;
+				offset += READ_BE_UINT32(_dataSrc + offset + 4) + 8;
+			}
+			else {
+				debug(2, "NutRenderer::loadFont() there is no FRME chunk");
+				free(_dataSrc);
+				return false;
+			}
+		}
+		else {
+			debug(2, "NutRenderer::loadFont() there is no FOBJ chunk in FRME chunk");
+			free(_dataSrc);
+			return false;
+		}
+	}
+
+	_loaded = true;
+	return true;
+}
+
+int32 NutRenderer::getCharWidth(char c) {
+	debug(2,  "NutRenderer::getCharWidth() called");
+	if (_loaded == false) {
+		debug(2, "NutRenderer::getCharWidth() Font is not loaded");
+		return 0;
+	}
+
+	return READ_LE_UINT16(_dataSrc + _offsets[c] + 6);
+}
+
+int32 NutRenderer::getCharHeight(char c) {
+	debug(2,  "NutRenderer::getCharHeight() called");
+	if (_loaded == false) {
+		debug(2, "NutRenderer::getCharHeight() Font is not loaded");
+		return 0;
+	}
+
+	return READ_LE_UINT16(_dataSrc + _offsets[c] + 8);
+}
+
+int32 NutRenderer::getStringWidth(char *string) {
+	debug(2,  "NutRenderer::getStringWidth() called");
+	if (_loaded == false) {
+		debug(2, "NutRenderer::getStringWidth() Font is not loaded");
+		return 0;
+	}
+	int32 length = 0;
+	int32 l = 0;
+	
+	do {
+		length += getCharWidth(string[l]);
+		l++;
+	} while (string[l] != 0);
+
+	return length;
+}
+
+void NutRenderer::drawString(char *string, int32 x, int32 y, byte color, int32 mode) {
+	debug(2,  "NutRenderer::getDrawString() called");
+	if (_loaded == false) {
+		debug(2, "NutRenderer::getDrawString() Font is not loaded");
+		return;
+	}
+
+	int32 l = 0;
+	do {
+		if ((x < 0) || (y < 0) || (x > _dstWidth) || (y > _dstHeight)) {
+			debug(2, "NutRenderer::getDrawString() position x, y out of range");
+			return;
+		}
+
+		x += getCharWidth(string[l]);
+		drawChar(string[l], x, y, 0);
+		l++;
+	} while (string[l] != 0);
+
+}
+
+void NutRenderer::drawChar(char c, int32 x, int32 y, byte color) {
+	debug(2,  "NutRenderer::getDrawChar() called");
+	if (_loaded == false) {
+		debug(2, "NutRenderer::getDrawChar() Font is not loaded");
+		return;
+	}
+
+	byte * src = (byte*)(_dataSrc + _offsets[c] + 14);
+	uint32 length = READ_BE_UINT32(_dataSrc + _offsets[c] - 4) - 14;
+
+	decodeCodec44(_tmpCodecBuffer, src, length);
+
+	int32 width = READ_LE_UINT16(_dataSrc + _offsets[c] + 6);
+	int32 height = READ_LE_UINT16(_dataSrc + _offsets[c] + 8);
+
+	for (int32 ty = 0; ty < height; ty++) {
+		for (int32 tx = 0; tx < width; tx++) {
+			byte pixel = *(_tmpCodecBuffer + ty * width + tx);
+			if (pixel != 0) {
+				if (color == 0) {
+					if (pixel == 0x01)
+						pixel = 0xf;
+				}
+				else {
+					if (pixel == 0x01)
+						pixel = color;
+				}
+				if (pixel == 0xff)
+					pixel = 0x0;
+				*(_dstPtr + ((ty + y) * _dstPitch + x + tx)) = pixel;
+			}
+		}
+	}
+
+}
+