mirror of
https://github.com/libretro/scummvm.git
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328 lines
8.0 KiB
C++
328 lines
8.0 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2004-2005 The ScummVM project
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* $Header$
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*
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*/
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#include "stdafx.h"
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#include "resource.h"
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#include "common/stream.h"
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#include "common/array.h"
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#ifdef DUMP_FILES
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#include <cstdio>
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#endif
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namespace Kyra {
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const uint16 FontHeader_Magic1 = 0x0500;
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const uint16 FontHeader_Magic2 = 0x000e;
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const uint16 FontHeader_Magic3 = 0x0014;
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Font::Font(uint8* buffer, uint32 size) {
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if (!buffer) {
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error("resource created without data");
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}
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_buffer = buffer;
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Common::MemoryReadStream bufferstream(buffer, size);
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bufferstream.read(&_fontHeader, sizeof(_fontHeader));
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// tests for the magic values
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if(_fontHeader._magic1 != FontHeader_Magic1 || _fontHeader._magic2 != FontHeader_Magic2 ||
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_fontHeader._magic3 != FontHeader_Magic3) {
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error("magic vars in the fontheader are corrupt\n"
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"_magic1 = 0x%x, _magic2 = 0x%x, _magic3 = 0x%x",
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_fontHeader._magic1, _fontHeader._magic2, _fontHeader._magic3);
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}
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// init all the pointers
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_offsetTable = (uint16*)&buffer[bufferstream.pos()];
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_charWidth = &buffer[_fontHeader._charWidthOffset];
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_charHeight = (uint16*)&buffer[_fontHeader._charHeightOffset];
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_charBits = &buffer[_fontHeader._charBitsOffset];
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// now prerender =)
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preRenderAllChars(bufferstream.pos());
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// This value seems to be a version or language variable
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// Known Values
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// ------------
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// Russian Floppy: 0x1010
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// German Floppy and English/German CD: 0x1011
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debug("Font::_version = 0x%x", _fontHeader._version);
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delete [] _buffer;
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_buffer = 0;
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_offsetTable = 0;
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_charHeight = 0;
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_charWidth = 0;
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_charBits = 0;
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}
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Font::~Font() {
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// FIXME: Release memory of the prerendered chars
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}
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uint32 Font::getStringWidth(const char* string, char terminator) {
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uint32 strsize;
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for (strsize = 0; string[strsize] != terminator && string[strsize] != '\0'; ++strsize)
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;
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uint32 stringwidth = 0;
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for (uint32 pos = 0; pos < strsize; ++pos) {
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stringwidth += _preRenderedChars[string[pos]].width;
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}
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return stringwidth;
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}
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const uint8* Font::getChar(char c, uint8* width, uint8* height, uint8* heightadd) {
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PreRenderedChar& c_ = _preRenderedChars[c];
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*width = c_.width;
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*height = c_.height;
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*heightadd = c_.heightadd;
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return c_.c;
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}
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// splits up the String in a word
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const char* Font::getNextWord(const char* string, uint32* size) {
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uint32 startpos = 0;
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*size = 0;
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// gets start of the word
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for (; string[startpos] == ' '; ++startpos)
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;
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// not counting size
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for (*size = 0; string[startpos + *size] != ' ' && string[startpos + *size] != '\0'; ++(*size))
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;
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++(*size);
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return &string[startpos];
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}
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// Move this to Font declaration?
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struct WordChunk {
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const char* _string;
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uint32 _size;
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};
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void Font::drawStringToPlane(const char* string,
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uint8* plane, uint16 planewidth, uint16 planeheight,
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uint16 x, uint16 y, uint8 color) {
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// lets do it word after word
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Common::Array<WordChunk> words;
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uint32 lastPos = 0;
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uint32 lastSize = 0;
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uint32 strlgt = strlen(string);
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while (true) {
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WordChunk newchunk;
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newchunk._string = getNextWord(&string[lastPos], &lastSize);
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newchunk._size = lastSize;
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lastPos += lastSize;
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words.push_back(newchunk);
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if (lastPos >= strlgt)
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break;
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}
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uint16 current_x = x, current_y = y;
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uint8 heighest = 0;
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const uint8* src = 0;
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uint8 width = 0, height = 0, heightadd = 0;
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// now the have alle of these words
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for (uint32 tmp = 0; tmp < words.size(); ++tmp) {
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lastSize = getStringWidth(words[tmp]._string, ' ');
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// adjust x position
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if (current_x + lastSize >= planewidth) {
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// hmm lets move it a bit to the left
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if (current_x == x && (int16)planewidth - (int16)lastSize >= 0) {
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current_x = planewidth - lastSize;
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} else {
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current_x = x;
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if (heighest)
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current_y += heighest + 2;
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else // now we are using just the fist char :)
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current_y += _preRenderedChars[words[tmp]._string[0]].height;
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heighest = 0;
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}
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}
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// TODO: maybe test if current_y >= planeheight ?
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// output word :)
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for (lastPos = 0; lastPos < words[tmp]._size; ++lastPos) {
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if (words[tmp]._string[lastPos] == '\0')
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break;
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// gets our char :)
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src = getChar(words[tmp]._string[lastPos], &width, &height, &heightadd);
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// lets draw our char
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drawCharToPlane(src, color, width, height, plane, planewidth, planeheight, current_x, current_y + heightadd);
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current_x += width;
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heighest = MAX(heighest, height);
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}
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}
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}
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void Font::drawCharToPlane(const uint8* c, uint8 color, uint8 width, uint8 height,
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uint8* plane, uint16 planewidth, uint16 planeheight, uint16 x, uint16 y) {
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const uint8* src = c;
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// blit them to the screen
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for (uint8 yadd = 0; yadd < height; ++yadd) {
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for (uint8 xadd = 0; xadd < width; ++xadd) {
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switch(*src) {
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case 1:
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plane[(y + yadd) * planewidth + x + xadd] = color;
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break;
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case 2:
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plane[(y + yadd) * planewidth + x + xadd] = 14;
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break;
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case 3:
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plane[(y + yadd) * planewidth + x + xadd] = 0;
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break;
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default:
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// nothing to do now
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break;
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};
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++src;
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}
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}
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}
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void Font::preRenderAllChars(uint16 offsetTableOffset) {
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uint16 startOffset = _offsetTable[0];
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uint16 currentOffset = offsetTableOffset;
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uint8 currentChar = 0;
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for (; currentOffset < startOffset; ++currentChar, currentOffset += sizeof(uint16)) {
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// lets prerender the char :)
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PreRenderedChar newChar;
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newChar.c = new uint8[(_charHeight[currentChar] >> 8) * _charWidth[currentChar]];
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assert(newChar.c);
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memset(newChar.c, 0, sizeof(uint8) * (_charHeight[currentChar] >> 8) * _charWidth[currentChar]);
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newChar.height = (_charHeight[currentChar] >> 8);
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newChar.width = _charWidth[currentChar];
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newChar.heightadd = _charHeight[currentChar] & 0xFF;
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uint8* src = _buffer + _offsetTable[currentChar];
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uint8* dst = &newChar.c[0];
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uint8 index = 0;
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#ifdef DUMP_FILES
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static char filename[32] = { 0 };
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sprintf(filename, "dumps/char%d.dmp", currentChar);
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FILE* dump = fopen(filename, "w+");
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assert(dump);
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fprintf(dump, "This should be a '%c'\n", currentChar);
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#endif
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// prerender the char
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for (uint8 yadd = 0; yadd < newChar.height; ++yadd) {
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for (uint8 xadd = 0; xadd < newChar.width; ++xadd) {
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if (xadd % 2) {
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index = ((*src) & 0xF0) >> 4;
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++src;
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} else {
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index = (*src) & 0x0F;
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}
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switch(index) {
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case 1:
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#ifdef DUMP_FILES
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fprintf(dump, "#");
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#endif
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dst[yadd * newChar.width + xadd] = 1;
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break;
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case 2:
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#ifdef DUMP_FILES
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fprintf(dump, "$");
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#endif
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dst[yadd * newChar.width + xadd] = 2;
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break;
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case 3:
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#ifdef DUMP_FILES
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fprintf(dump, "<EFBFBD>");
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#endif
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dst[yadd * newChar.width + xadd] = 3;
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break;
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default:
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#ifdef DUMP_FILES
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fprintf(dump, "%d", index);
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#endif
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break;
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};
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}
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if (newChar.width % 2) {
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++src;
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}
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#ifdef DUMP_FILES
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fprintf(dump, "\n");
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#endif
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}
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#ifdef DUMP_FILES
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fprintf(dump, "\nThis is the created map:\n");
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// now print the whole thing again
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for (uint8 yadd = 0; yadd < newChar.height; ++yadd) {
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for (uint8 xadd = 0; xadd < newChar.width; ++xadd) {
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fprintf(dump, "%d", dst[yadd * newChar.width + xadd]);
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}
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fprintf(dump, "\n");
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}
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fclose(dump);
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#endif
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_preRenderedChars[currentChar] = newChar;
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if (currentChar == 255) {
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break;
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}
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}
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}
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} // end of namespace Kyra
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