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/* 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 "sci/sci.h"
#include "sci/engine/state.h"
#include "sci/graphics/screen.h"
#include "sci/graphics/font.h"
namespace Sci {
GfxFontFromResource::GfxFontFromResource(ResourceManager *resMan, GfxScreen *screen, GuiResourceId resourceId)
: _resourceId(resourceId), _screen(screen), _resMan(resMan) {
assert(resourceId != -1);
// Workaround: lsl1sci mixes its own internal fonts with the global
// SCI ones, so we translate them here, by removing their extra bits
if (!resMan->testResource(ResourceId(kResourceTypeFont, resourceId)))
resourceId = resourceId & 0x7ff;
_resource = resMan->findResource(ResourceId(kResourceTypeFont, resourceId), true);
if (!_resource) {
error("font resource %d not found", resourceId);
}
_numChars = _resource->getUint16SE32At(2);
_fontHeight = _resource->getUint16SE32At(4);
_chars = new Charinfo[_numChars];
// filling info for every char
for (int16 i = 0; i < _numChars; i++) {
_chars[i].offset = _resource->getUint16SE32At(6 + i * 2);
_chars[i].width = _resource->getUint8At(_chars[i].offset);
_chars[i].height = _resource->getUint8At(_chars[i].offset + 1);
}
}
GfxFontFromResource::~GfxFontFromResource() {
delete[] _chars;
_resMan->unlockResource(_resource);
}
GuiResourceId GfxFontFromResource::getResourceId() {
return _resourceId;
}
uint8 GfxFontFromResource::getHeight() {
return _fontHeight;
}
uint8 GfxFontFromResource::getCharWidth(uint16 chr) {
return chr < _numChars ? _chars[chr].width : 0;
}
uint8 GfxFontFromResource::getCharHeight(uint16 chr) {
return chr < _numChars ? _chars[chr].height : 0;
}
SciSpan<const byte> GfxFontFromResource::getCharData(uint16 chr) {
if (chr >= _numChars) {
return SciSpan<const byte>();
}
const uint32 size = (chr + 1 >= _numChars ? _resource->size() : _chars[chr + 1].offset) - _chars[chr].offset - 2;
return _resource->subspan(_chars[chr].offset + 2, size);
}
void GfxFontFromResource::draw(uint16 chr, int16 top, int16 left, byte color, bool greyedOutput) {
if (chr >= _numChars) {
// SSCI silently ignores attempts to draw characters that do not exist
// in the font; for now, emit warnings if this happens, to learn if
// it leads to any bugs
warning("%s is missing glyph %d", _resource->name().c_str(), chr);
return;
}
// Make sure we're comparing against the correct dimensions
// If the font we're drawing is already upscaled, make sure we use the full screen width/height
uint16 screenWidth = _screen->fontIsUpscaled() ? _screen->getDisplayWidth() : _screen->getWidth();
uint16 screenHeight = _screen->fontIsUpscaled() ? _screen->getDisplayHeight() : _screen->getHeight();
int charWidth = MIN<int>(getCharWidth(chr), screenWidth - left);
int charHeight = MIN<int>(getCharHeight(chr), screenHeight - top);
byte b = 0, mask = 0xFF;
int y = 0;
int16 greyedTop = top;
SciSpan<const byte> charData = getCharData(chr);
for (int i = 0; i < charHeight; i++, y++) {
if (greyedOutput)
mask = ((greyedTop++) % 2) ? 0xAA : 0x55;
for (int done = 0; done < charWidth; done++) {
if ((done & 7) == 0) // fetching next data byte
b = *(charData++) & mask;
if (b & 0x80) // if MSB is set - paint it
_screen->putFontPixel(top, left + done, y, color);
b = b << 1;
}
}
}
#ifdef ENABLE_SCI32
void GfxFontFromResource::drawToBuffer(uint16 chr, int16 top, int16 left, byte color, bool greyedOutput, byte *buffer, int16 bufWidth, int16 bufHeight) {
if (chr >= _numChars) {
// SSCI silently ignores attempts to draw characters that do not exist
// in the font; for now, emit warnings if this happens, to learn if
// it leads to any bugs
warning("%s is missing glyph %d", _resource->name().c_str(), chr);
return;
}
int charWidth = MIN<int>(getCharWidth(chr), bufWidth - left);
int charHeight = MIN<int>(getCharHeight(chr), bufHeight - top);
byte b = 0, mask = 0xFF;
int y = 0;
int16 greyedTop = top;
SciSpan<const byte> charData = getCharData(chr);
for (int i = 0; i < charHeight; i++, y++) {
if (greyedOutput)
mask = ((greyedTop++) % 2) ? 0xAA : 0x55;
for (int done = 0; done < charWidth; done++) {
if ((done & 7) == 0) // fetching next data byte
b = *(charData++) & mask;
if (b & 0x80) { // if MSB is set - paint it
int offset = (top + y) * bufWidth + (left + done);
buffer[offset] = color;
}
b = b << 1;
}
}
}
#endif
} // End of namespace Sci
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