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/* 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;
}
if (_dataSrc != NULL)
free(_dataSrc);
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;
}
drawChar(string[l], x, y, color);
x += getCharWidth(string[l]);
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;
}
}
}
}
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