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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 "common/scummsys.h"
#include "common/debug.h"
#include "common/file.h"
#include "common/system.h"
#include "graphics/fonts/ttf.h"
#include "graphics/surface.h"
#include "zvision/truetype_font.h"
#include "zvision/zvision.h"
#include "zvision/render_manager.h"
namespace ZVision {
TruetypeFont::TruetypeFont(ZVision *engine, int32 fontHeight, const Graphics::PixelFormat pixelFormat)
: _engine(engine),
_pixelFormat(pixelFormat),
_isBold(false),
_isItalic(false),
_isStriked(false),
_isUnderline(false),
_fontHeight(fontHeight),
_font(0),
_lineHeight(0),
_maxCharWidth(0),
_maxCharHeight(0) {
for (int i = 0; i < NUM_CACHED_TEXTS; i++) {
_cachedTexts[i] = 0;
}
}
TruetypeFont::~TruetypeFont(void) {
clearCache();
delete _font;
}
void TruetypeFont::clearCache() {
for (int i = 0; i < NUM_CACHED_TEXTS; i++) {
if (_cachedTexts[i]) {
delete _cachedTexts[i];
}
_cachedTexts[i] = 0;
}
}
bool TruetypeFont::loadFile(const Common::String &filename) {
Common::File file;
if (file.open(filename)) {
debug("TTF font file %s could not be opened", filename.c_str());
return false;
}
_font = Graphics::loadTTFFont(file, 96, _fontHeight); // Use the same dpi as WME (96 vs 72).
_lineHeight = _font->getFontHeight();
return true;
}
void TruetypeFont::drawText(const Common::String &text, int x, int y, int width, TextAlign align, int maxHeight) {
if (text.equals("")) {
return;
}
// Find the cached surface, if it exists
uint32 minUseTime = UINT_MAX;
int minIndex = -1;
Graphics::Surface *surface = nullptr;
for (int i = 0; i < NUM_CACHED_TEXTS; i++) {
if (_cachedTexts[i] == nullptr) {
minUseTime = 0;
minIndex = i;
} else {
if (_cachedTexts[i]->_text == text && _cachedTexts[i]->_align == align && _cachedTexts[i]->_width == width && _cachedTexts[i]->_maxHeight == maxHeight) {
surface = _cachedTexts[i]->_surface;
_cachedTexts[i]->_marked = true;
_cachedTexts[i]->_lastUsed = g_system->getMillis();
break;
} else {
if (_cachedTexts[i]->_lastUsed < minUseTime) {
minUseTime = _cachedTexts[i]->_lastUsed;
minIndex = i;
}
}
}
}
// It's not cached, so create one
if (!surface) {
surface = renderTextToTexture(text, width, align, maxHeight);
if (surface) {
// Write the new surface to cache
if (_cachedTexts[minIndex] != nullptr) {
delete _cachedTexts[minIndex];
}
_cachedTexts[minIndex] = new CachedText;
_cachedTexts[minIndex]->_surface = surface;
_cachedTexts[minIndex]->_align = align;
_cachedTexts[minIndex]->_width = width;
_cachedTexts[minIndex]->_maxHeight = maxHeight;
_cachedTexts[minIndex]->_text = text;
_cachedTexts[minIndex]->_marked = true;
_cachedTexts[minIndex]->_lastUsed = _engine->_system->getMillis();
}
}
// Render it to the working window
if (surface) {
_engine->getRenderManager()->copyRectToWorkingWindow((uint16 *)surface->getPixels(), x, y, surface->w, surface->w, surface->h);
}
}
Graphics::Surface *TruetypeFont::renderTextToTexture(const Common::String &text, int width, TextAlign align, int maxHeight) {
Common::Array<Common::String> lines;
_font->wordWrapText(text, width, lines);
while (maxHeight > 0 && lines.size() * _lineHeight > maxHeight) {
lines.pop_back();
}
if (lines.size() == 0) {
return nullptr;
}
Graphics::TextAlign alignment = Graphics::kTextAlignInvalid;
if (align == ALIGN_LEFT) {
alignment = Graphics::kTextAlignLeft;
} else if (align == ALIGN_CENTER) {
alignment = Graphics::kTextAlignCenter;
} else if (align == ALIGN_RIGHT) {
alignment = Graphics::kTextAlignRight;
}
Graphics::Surface *surface = new Graphics::Surface();
surface->create((uint16)width, (uint16)(_lineHeight * lines.size()), _pixelFormat);
uint32 alphaColor = 0xffffffff;
int heightOffset = 0;
for (Common::Array<Common::String>::iterator it = lines.begin(); it != lines.end(); it++) {
_font->drawString(surface, *it, 0, heightOffset, width, alphaColor, alignment);
heightOffset += (int)_lineHeight;
}
return surface;
// TODO: _isUnderline, _isBold, _isItalic, _isStriked
}
void TruetypeFont::measureText(const Common::String &text, int maxWidth, int maxHeight, int &textWidthOut, int &textHeightOut) {
if (maxWidth >= 0) {
Common::Array<Common::String> lines;
_font->wordWrapText(text, maxWidth, lines);
Common::Array<Common::String>::iterator it;
textWidthOut = 0;
for (it = lines.begin(); it != lines.end(); ++it) {
textWidthOut = MAX(textWidthOut, _font->getStringWidth(*it));
}
textHeightOut = (int)(lines.size() * getLineHeight());
} else {
textWidthOut = _font->getStringWidth(text);
textHeightOut = _fontHeight;
}
}
} // End of namespace ZVision
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