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/* ScummVM - Scumm Interpreter
* Copyright (C) 2004 Ivan Dubrov
* Copyright (C) 2004-2005 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $Header$
*
*/
#include "gob/driver_vga.h"
#include "graphics/primitives.h"
#if defined (_MSC_VER) || defined (__WINS__)
#define STUB_FUNC printf("STUB:")
#else
#define STUB_FUNC printf("STUB: %s\n", __PRETTY_FUNCTION__)
#endif
namespace Gob {
void VGAVideoDriver::drawSprite(Video::SurfaceDesc *source, Video::SurfaceDesc *dest, int16 left, int16 top, int16 right, int16 bottom, int16 x, int16 y, int16 transp) {
if (x >= 0 && x < dest->width && y >= 0 && y < dest->height) {
int16 width = (right - left) + 1;
int16 height = (bottom - top) + 1;
byte *srcPos = source->vidPtr + (top * source->width) + left;
byte *destPos = dest->vidPtr + (y * dest->width) + x;
while (height--) {
if (transp) {
for (int16 i = 0; i < width; ++i) {
if (srcPos[i])
destPos[i] = srcPos[i];
}
} else {
for (int16 i = 0; i < width; ++i)
destPos[i] = srcPos[i];
}
srcPos += source->width; //width ?
destPos += dest->width;
}
}
}
void VGAVideoDriver::fillRect(Video::SurfaceDesc *dest, int16 left, int16 top, int16 right, int16 bottom, byte color) {
if (left < dest->width && right < dest->width && top < dest->height && bottom < dest->height) {
byte *pos = dest->vidPtr + (top * dest->width) + left;
int16 width = (right - left) + 1;
int16 height = (bottom - top) + 1;
while (height--) {
for (int16 i = 0; i < width; ++i) {
pos[i] = color;
}
pos += dest->width;
}
}
}
void VGAVideoDriver::putPixel(int16 x, int16 y, byte color, Video::SurfaceDesc *dest) {
if (x >= 0 && x < dest->width && y >= 0 && y < dest->height)
dest->vidPtr[(y * dest->width) + x] = color;
}
void VGAVideoDriver::drawLetter(unsigned char item, int16 x, int16 y, Video::FontDesc *fontDesc, byte color1, byte color2, byte transp, Video::SurfaceDesc *dest) {
byte *src, *dst;
uint16 data;
int i, j;
src = (byte *)fontDesc->dataPtr + (item - fontDesc->startItem) * (fontDesc->itemSize & 0xff);
dst = dest->vidPtr + x + dest->width * y;
for (i = 0; i < fontDesc->itemHeight; i++) {
data = READ_BE_UINT16(src);
src += 2;
if (fontDesc->itemSize <= 8)
src--;
for (j = 0; j < fontDesc->itemWidth; j++) {
if (data & 0x8000) {
*dst = color2;
} else {
if (color1 == 0)
*dst = transp;
}
dst++;
data <<= 1;
}
dst += dest->width - fontDesc->itemWidth;
}
}
static void plotPixel(int x, int y, int color, void *data) {
Video::SurfaceDesc *dest = (Video::SurfaceDesc *)data;
if (x >= 0 && x < dest->width && y >= 0 && y < dest->height)
dest->vidPtr[(y * dest->width) + x] = color;
}
void VGAVideoDriver::drawLine(Video::SurfaceDesc *dest, int16 x0, int16 y0, int16 x1, int16 y1, byte color) {
Graphics::drawLine(x0, y0, x1, y1, color, &plotPixel, dest);
}
void VGAVideoDriver::drawPackedSprite(byte *sprBuf, int16 width, int16 height, int16 x, int16 y, byte transp, Video::SurfaceDesc *dest) {
int destRight = x + width;
int destBottom = y + height;
byte* dst = dest->vidPtr + x + dest->width * y;
int curx = x;
int cury = y;
while (1) {
uint8 val = *sprBuf++;
unsigned int repeat = val & 7;
val &= 0xF8;
if (!(val & 8)) {
repeat <<= 8;
repeat |= *sprBuf++;
}
repeat++;
val >>= 4;
for (unsigned int i = 0; i < repeat; ++i) {
if (curx < dest->width && cury < dest->height)
if (!transp || val)
*dst = val;
dst++;
curx++;
if (curx == destRight) {
dst += dest->width + x - curx;
curx = x;
cury++;
if (cury == destBottom)
return;
}
}
}
}
}
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