Rename TrueTypeFont to SDLFont.

1 files changed, 340 insertions, 0 deletions

diff --git a/src/gui/sdlfont.cpp b/src/gui/sdlfont.cpp
new file mode 100644
index 000000000..ab20eee97
--- /dev/null
+++ b/src/gui/sdlfont.cpp
@@ -0,0 +1,340 @@
+/*
+ *  The ManaPlus Client
+ *  Copyright (C) 2004-2009  The Mana World Development Team
+ *  Copyright (C) 2009-2010  The Mana Developers
+ *  Copyright (C) 2009  Aethyra Development Team
+ *  Copyright (C) 2011  The ManaPlus Developers
+ *
+ *  This file is part of The ManaPlus 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/sdlfont.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 SDLTextChunk
+{
+    public:
+        SDLTextChunk(const std::string &text, const gcn::Color &color) :
+            img(0), text(text), color(color)
+        {
+        }
+
+        ~SDLTextChunk()
+        {
+            delete img;
+            img = 0;
+        }
+
+        bool operator==(const SDLTextChunk &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<SDLTextChunk>::iterator CacheIterator;
+
+static int fontCounter;
+
+SDLFont::SDLFont(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, 0, 65535);
+    }
+
+    ++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("SDLSDLFont::SDLSDLFont: " +
+                                std::string(TTF_GetError()));
+        }
+    }
+
+    TTF_SetFontStyle(mFont, style);
+    mCleanTime = cur_time + 120;
+}
+
+SDLFont::~SDLFont()
+{
+    TTF_CloseFont(mFont);
+    mFont = 0;
+    --fontCounter;
+
+    if (fontCounter == 0)
+    {
+        TTF_Quit();
+        delete []strBuf;
+    }
+}
+
+void SDLFont::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("SDLSDLFont::SDLSDLFont: " +
+                    std::string(TTF_GetError()));
+        return;
+    }
+
+    if (mFont)
+        TTF_CloseFont(mFont);
+
+    mFont = font;
+    TTF_SetFontStyle(mFont, style);
+    clear();
+}
+
+void SDLFont::clear()
+{
+    for (unsigned short f = 0; f < static_cast<unsigned short>(
+        CACHES_NUMBER); f ++)
+    {
+        mCache[static_cast<unsigned short>(f)].clear();
+    }
+}
+
+void SDLFont::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;
+
+    SDLTextChunk chunk(text, col);
+
+    unsigned char chr = text[0];
+    std::list<SDLTextChunk> *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 SDLFont::createSDLTextChunk(SDLTextChunk *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 SDLFont::getWidth(const std::string &text) const
+{
+    if (text.empty())
+        return 0;
+
+    unsigned char chr = text[0];
+    std::list<SDLTextChunk> *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 SDLFont::getHeight() const
+{
+    return TTF_FontHeight(mFont);
+}
+
+void SDLFont::doClean()
+{
+    for (int f = 0; f < CACHES_NUMBER; f ++)
+    {
+        std::list<SDLTextChunk> *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();
+        }
+    }
+}
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