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-rw-r--r--src/gui/truetypefont.cpp336
1 files changed, 336 insertions, 0 deletions
diff --git a/src/gui/truetypefont.cpp b/src/gui/truetypefont.cpp
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+++ b/src/gui/truetypefont.cpp
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+/*
+ * The Mana Client
+ * Copyright (C) 2004-2009 The Mana World Development Team
+ * Copyright (C) 2009-2010 The Mana Developers
+ * Copyright (C) 2009 Aethyra Development Team
+ *
+ * This file is part of The Mana Client.
+ *
+ * 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
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "gui/truetypefont.h"
+
+#include "client.h"
+#include "graphics.h"
+#include "log.h"
+#include "main.h"
+
+#include "resources/image.h"
+#include "resources/resourcemanager.h"
+
+#include "utils/stringutils.h"
+
+#include <guichan/exception.hpp>
+
+const unsigned int CACHE_SIZE = 256;
+const unsigned int CACHE_SIZE_SMALL1 = 90;
+const unsigned int CACHE_SIZE_SMALL2 = 150;
+
+char *strBuf;
+
+class TextChunk
+{
+ public:
+ TextChunk(const std::string &text, const gcn::Color &color) :
+ img(0), text(text), color(color)
+ {
+ }
+
+ ~TextChunk()
+ {
+ delete img;
+ img = 0;
+ }
+
+ bool operator==(const TextChunk &chunk) const
+ {
+ return (chunk.text == text && chunk.color == color);
+ }
+
+ void generate(TTF_Font *font)
+ {
+ SDL_Color sdlCol;
+ sdlCol.b = static_cast<Uint8>(color.b);
+ sdlCol.r = static_cast<Uint8>(color.r);
+ sdlCol.g = static_cast<Uint8>(color.g);
+
+ getSafeUtf8String(text, strBuf);
+
+// SDL_Surface *surface = TTF_RenderUTF8_Solid(
+ SDL_Surface *surface = TTF_RenderUTF8_Blended(
+ font, strBuf, sdlCol);
+
+ if (!surface)
+ {
+ img = 0;
+ return;
+ }
+
+ img = Image::load(surface);
+
+ SDL_FreeSurface(surface);
+ }
+
+ Image *img;
+ std::string text;
+ gcn::Color color;
+};
+
+typedef std::list<TextChunk>::iterator CacheIterator;
+
+static int fontCounter;
+
+TrueTypeFont::TrueTypeFont(const std::string &filename, int size, int style) :
+ mCreateCounter(0),
+ mDeleteCounter(0)
+{
+ ResourceManager *resman = ResourceManager::getInstance();
+
+ if (fontCounter == 0 && TTF_Init() == -1)
+ {
+ throw GCN_EXCEPTION("Unable to initialize SDL_ttf: " +
+ std::string(TTF_GetError()));
+ }
+
+ if (!fontCounter)
+ {
+ strBuf = new char[65535];
+ memset(strBuf, 65535, 0);
+ }
+
+ ++fontCounter;
+ mFont = TTF_OpenFont(resman->getPath(filename).c_str(), size);
+
+ if (!mFont)
+ {
+ logger->log("Error finding font " + filename);
+ mFont = TTF_OpenFont(resman->getPath(
+ "fonts/dejavusans.ttf").c_str(), size);
+ if (!mFont)
+ {
+ throw GCN_EXCEPTION("SDLTrueTypeFont::SDLTrueTypeFont: " +
+ std::string(TTF_GetError()));
+ }
+ }
+
+ TTF_SetFontStyle(mFont, style);
+ mCleanTime = cur_time + 120;
+}
+
+TrueTypeFont::~TrueTypeFont()
+{
+ TTF_CloseFont(mFont);
+ mFont = 0;
+ --fontCounter;
+
+ if (fontCounter == 0)
+ {
+ TTF_Quit();
+ delete []strBuf;
+ }
+}
+
+void TrueTypeFont::loadFont(const std::string &filename, int size, int style)
+{
+ ResourceManager *resman = ResourceManager::getInstance();
+
+ if (fontCounter == 0 && TTF_Init() == -1)
+ {
+ logger->log("Unable to initialize SDL_ttf: " +
+ std::string(TTF_GetError()));
+ return;
+ }
+
+ TTF_Font *font = TTF_OpenFont(resman->getPath(filename).c_str(), size);
+
+ if (!font)
+ {
+ logger->log("SDLTrueTypeFont::SDLTrueTypeFont: " +
+ std::string(TTF_GetError()));
+ return;
+ }
+
+ if (mFont)
+ TTF_CloseFont(mFont);
+
+ mFont = font;
+ TTF_SetFontStyle(mFont, style);
+ clear();
+}
+
+void TrueTypeFont::clear()
+{
+ for (unsigned short f = 0; f < (unsigned short)CACHES_NUMBER; f ++)
+ mCache[static_cast<unsigned short>(f)].clear();
+}
+
+void TrueTypeFont::drawString(gcn::Graphics *graphics,
+ const std::string &text,
+ int x, int y)
+{
+ if (text.empty())
+ return;
+
+ Graphics *g = dynamic_cast<Graphics *>(graphics);
+
+ gcn::Color col = g->getColor();
+ const float alpha = static_cast<float>(col.a) / 255.0f;
+
+ /* The alpha value is ignored at string generation so avoid caching the
+ * same text with different alpha values.
+ */
+ col.a = 255;
+
+ TextChunk chunk(text, col);
+
+ unsigned char chr = text[0];
+ std::list<TextChunk> *cache = &mCache[chr];
+
+ bool found = false;
+
+#ifdef DEBUG_FONT
+ int cnt = 0;
+#endif
+
+ for (CacheIterator i = cache->begin(); i != cache->end(); ++i)
+ {
+ if (chunk == (*i))
+ {
+ // Raise priority: move it to front
+ cache->splice(cache->begin(), *cache, i);
+ found = true;
+ break;
+ }
+#ifdef DEBUG_FONT
+ cnt ++;
+#endif
+ }
+#ifdef DEBUG_FONT
+ logger->log("drawString: " + text + ", iterations: " + toString(cnt));
+#endif
+
+ // Surface not found
+ if (!found)
+ {
+ if (cache->size() >= CACHE_SIZE)
+ {
+#ifdef DEBUG_FONT_COUNTERS
+ mDeleteCounter ++;
+#endif
+ cache->pop_back();
+ }
+#ifdef DEBUG_FONT_COUNTERS
+ mCreateCounter ++;
+#endif
+ cache->push_front(chunk);
+ cache->front().generate(mFont);
+
+ if (!mCleanTime)
+ {
+ mCleanTime = cur_time + 120;
+ }
+ else if (mCleanTime < cur_time)
+ {
+ doClean();
+ mCleanTime = cur_time + 120;
+ }
+ }
+
+ if (cache->front().img)
+ {
+ cache->front().img->setAlpha(alpha);
+ g->drawImage(cache->front().img, x, y);
+ }
+
+}
+
+void TrueTypeFont::createTextChunk(TextChunk *chunk)
+{
+ if (!chunk || chunk->text.empty())
+ return;
+
+ const float alpha = static_cast<float>(chunk->color.a) / 255.0f;
+ chunk->color.a = 255;
+ chunk->generate(mFont);
+ if (chunk->img)
+ chunk->img->setAlpha(alpha);
+}
+
+int TrueTypeFont::getWidth(const std::string &text) const
+{
+ if (text.empty())
+ return 0;
+
+ unsigned char chr = text[0];
+ std::list<TextChunk> *cache = &mCache[chr];
+
+#ifdef DEBUG_FONT
+ int cnt = 0;
+#endif
+
+ for (CacheIterator i = cache->begin(); i != cache->end(); i++)
+ {
+ if (i->text == text)
+ {
+ // Raise priority: move it to front
+ // Assumption is that TTF::draw will be called next
+ cache->splice(cache->begin(), *cache, i);
+ if (i->img)
+ return i->img->getWidth();
+ else
+ return 0;
+ }
+#ifdef DEBUG_FONT
+ cnt ++;
+#endif
+ }
+
+#ifdef DEBUG_FONT
+ logger->log("getWidth: " + text + ", iterations: " + toString(cnt));
+#endif
+
+ int w, h;
+ getSafeUtf8String(text, strBuf);
+ TTF_SizeUTF8(mFont, strBuf, &w, &h);
+ return w;
+}
+
+int TrueTypeFont::getHeight() const
+{
+ return TTF_FontHeight(mFont);
+}
+
+void TrueTypeFont::doClean()
+{
+ for (int f = 0; f < CACHES_NUMBER; f ++)
+ {
+ std::list<TextChunk> *cache = &mCache[f];
+ if (cache->size() > CACHE_SIZE_SMALL2)
+ {
+#ifdef DEBUG_FONT_COUNTERS
+ mDeleteCounter += 10;
+#endif
+ for (int d = 0; d < 10; d ++)
+ cache->pop_back();
+ }
+ else if (cache->size() > CACHE_SIZE_SMALL1)
+ {
+#ifdef DEBUG_FONT_COUNTERS
+ mDeleteCounter ++;
+#endif
+ cache->pop_back();
+ }
+ }
+} \ No newline at end of file
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