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Diffstat (limited to 'engines/zvision/truetype_font.cpp')
| -rw-r--r-- | engines/zvision/truetype_font.cpp | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/engines/zvision/truetype_font.cpp b/engines/zvision/truetype_font.cpp new file mode 100644 index 0000000000..b3aafc26d7 --- /dev/null +++ b/engines/zvision/truetype_font.cpp @@ -0,0 +1,191 @@ +/* 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 |