--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ext/guichan-0.8.2/src/imagefont.cpp	Mon Jan 11 23:34:52 2010 +0000
@@ -0,0 +1,375 @@
+/*      _______   __   __   __   ______   __   __   _______   __   __
+ *     / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___  /\ /  |\/ /\
+ *    / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
+ *   / / /__   / / // / // / // / /    / ___  / // ___  / // /| ' / /
+ *  / /_// /\ / /_// / // / // /_/_   / / // / // /\_/ / // / |  / /
+ * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
+ * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
+ *
+ * Copyright (c) 2004 - 2008 Olof Naessén and Per Larsson
+ *
+ *
+ * Per Larsson a.k.a finalman
+ * Olof Naessén a.k.a jansem/yakslem
+ *
+ * Visit: http://guichan.sourceforge.net
+ *
+ * License: (BSD)
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name of Guichan nor the names of its contributors may
+ *    be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * For comments regarding functions please see the header file.
+ */
+
+#include "guichan/imagefont.hpp"
+
+#include <sstream>
+
+#include "guichan/color.hpp"
+#include "guichan/exception.hpp"
+#include "guichan/graphics.hpp"
+#include "guichan/image.hpp"
+
+namespace gcn
+{
+    ImageFont::ImageFont(const std::string& filename,
+                         const std::string& glyphs)
+    {
+        mFilename = filename;
+        mImage = Image::load(filename, false);
+
+        Color separator = mImage->getPixel(0, 0);
+
+        int i = 0;
+        for (i = 0;
+             i < mImage->getWidth() && separator == mImage->getPixel(i, 0);
+             ++i)
+        {
+        }
+
+        if (i >= mImage->getWidth())
+        {
+            throw GCN_EXCEPTION("Corrupt image.");
+        }
+
+        int j = 0;
+        for (j = 0; j < mImage->getHeight(); ++j)
+        {
+            if (separator == mImage->getPixel(i, j))
+            {
+                break;
+            }
+        }
+
+        mHeight = j;
+        int x = 0, y = 0;
+        unsigned char k;
+
+        for (i = 0; i < (int)glyphs.size(); ++i)
+        {
+            k = glyphs.at(i);
+            mGlyph[k] = scanForGlyph(k, x, y, separator);
+            // Update x och y with new coordinates.
+            x = mGlyph[k].x + mGlyph[k].width;
+            y =  mGlyph[k].y;
+        }
+
+        mImage->convertToDisplayFormat();
+
+        mRowSpacing = 0;
+        mGlyphSpacing = 0;
+    }
+
+    ImageFont::ImageFont(Image* image,
+                         const std::string& glyphs)
+    {
+        mFilename = "Image*";
+        if (image == NULL)
+        {
+                GCN_EXCEPTION("Font image is NULL");
+        }
+        mImage = image;
+
+        Color separator = mImage->getPixel(0, 0);
+
+        int i = 0;
+        for (i = 0;
+             i < mImage->getWidth() && separator == mImage->getPixel(i, 0);
+             ++i)
+        {
+        }
+
+        if (i >= mImage->getWidth())
+        {
+            throw GCN_EXCEPTION("Corrupt image.");
+        }
+
+        int j = 0;
+        for (j = 0; j < mImage->getHeight(); ++j)
+        {
+            if (separator == mImage->getPixel(i, j))
+            {
+                break;
+            }
+        }
+
+        mHeight = j;
+        int x = 0, y = 0;
+        unsigned char k;
+
+        for (i = 0; i < (int)glyphs.size(); ++i)
+        {
+            k = glyphs.at(i);
+            mGlyph[k] = scanForGlyph(k, x, y, separator);
+            // Update x och y with new coordinates.
+            x = mGlyph[k].x + mGlyph[k].width;
+            y =  mGlyph[k].y;
+        }
+
+        mImage->convertToDisplayFormat();
+
+        mRowSpacing = 0;
+        mGlyphSpacing = 0;
+    }
+
+    ImageFont::ImageFont(const std::string& filename,
+                         unsigned char glyphsFrom,
+                         unsigned char glyphsTo)
+    {
+        mFilename = filename;
+        mImage = Image::load(filename, false);
+
+        Color separator = mImage->getPixel(0, 0);
+
+        int i = 0;
+        for (i=0; separator == mImage->getPixel(i, 0)
+                 && i < mImage->getWidth(); ++i)
+        {
+        }
+
+        if (i >= mImage->getWidth())
+        {
+            throw GCN_EXCEPTION("Corrupt image.");
+        }
+
+        int j = 0;
+        for (j = 0; j < mImage->getHeight(); ++j)
+        {
+            if (separator == mImage->getPixel(i, j))
+            {
+                break;
+            }
+        }
+
+        mHeight = j;
+        int x = 0, y = 0;
+
+        for (i = glyphsFrom; i < glyphsTo + 1; i++)
+        {
+            mGlyph[i] = scanForGlyph(i, x, y, separator);
+            // Update x och y with new coordinates.
+            x = mGlyph[i].x + mGlyph[i].width;
+            y =  mGlyph[i].y;
+        }
+
+        mImage->convertToDisplayFormat();
+
+        mRowSpacing = 0;
+        mGlyphSpacing = 0;
+    }
+
+    ImageFont::~ImageFont()
+    {
+        delete mImage;
+    }
+
+    int ImageFont::getWidth(unsigned char glyph) const
+    {
+        if (mGlyph[glyph].width == 0)
+        {
+            return mGlyph[(int)(' ')].width + mGlyphSpacing;
+        }
+
+        return mGlyph[glyph].width + mGlyphSpacing;
+    }
+
+    int ImageFont::getHeight() const
+    {
+        return mHeight + mRowSpacing;
+    }
+
+    int ImageFont::drawGlyph(Graphics* graphics,
+                             unsigned char glyph,
+                             int x, int y)
+    {
+        // This is needed for drawing the glyph in the middle
+        // if we have spacing.
+        int yoffset = getRowSpacing() / 2;
+
+        if (mGlyph[glyph].width == 0)
+        {
+            graphics->drawRectangle(Rectangle(x,
+                                              y + 1 + yoffset,
+                                              mGlyph[(int)(' ')].width - 1,
+                                              mGlyph[(int)(' ')].height - 2));
+
+            return mGlyph[(int)(' ')].width + mGlyphSpacing;
+        }
+
+        graphics->drawImage(mImage,
+                            mGlyph[glyph].x,
+                            mGlyph[glyph].y,
+                            x,
+                            y + yoffset,
+                            mGlyph[glyph].width,
+                            mGlyph[glyph].height);
+
+        return mGlyph[glyph].width + mGlyphSpacing;
+    }
+
+    void ImageFont::drawString(Graphics* graphics,
+                               const std::string& text,
+                               int x,
+                               int y)
+    {
+        unsigned int i;
+
+        for (i = 0; i < text.size(); ++i)
+        {
+            drawGlyph(graphics, text.at(i), x, y);
+            x += getWidth(text.at(i));
+        }
+    }
+
+    void ImageFont::setRowSpacing(int spacing)
+    {
+        mRowSpacing = spacing;
+    }
+
+    int ImageFont::getRowSpacing()
+    {
+        return mRowSpacing;
+    }
+
+    void ImageFont::setGlyphSpacing(int spacing)
+    {
+        mGlyphSpacing = spacing;
+    }
+
+    int ImageFont::getGlyphSpacing()
+    {
+        return mGlyphSpacing;
+    }
+
+    Rectangle ImageFont::scanForGlyph(unsigned char glyph,
+                                      int x,
+                                      int y,
+                                      const Color& separator)
+    {
+        Color color;
+        do
+        {
+            ++x;
+
+            if (x >= mImage->getWidth())
+            {
+                y += mHeight + 1;
+                x = 0;
+
+                if (y >= mImage->getHeight())
+                {
+                    std::string str;
+                    std::ostringstream os(str);
+                    os << "Image ";
+                    os << mFilename;
+                    os << " with font is corrupt near character '";
+                    os << glyph;
+                    os << "'";
+                    throw GCN_EXCEPTION(os.str());
+                }
+            }
+
+            color = mImage->getPixel(x, y);
+
+        } while (color == separator);
+
+        int width = 0;
+
+        do
+        {
+            ++width;
+
+            if (x + width >= mImage->getWidth())
+            {
+                std::string str;
+                std::ostringstream os(str);
+                os << "Image ";
+                os << mFilename;
+                os << " with font is corrupt near character '";
+                os << glyph;
+                os << "'";
+                throw GCN_EXCEPTION(os.str());
+            }
+
+            color = mImage->getPixel(x + width, y);
+
+        } while (color != separator);
+
+        return Rectangle(x, y, width, mHeight);
+    }
+
+    int ImageFont::getWidth(const std::string& text) const
+    {
+        unsigned int i;
+        int size = 0;
+
+        for (i = 0; i < text.size(); ++i)
+        {
+            size += getWidth(text.at(i));
+        }
+
+        return size - mGlyphSpacing;
+    }
+
+    int ImageFont::getStringIndexAt(const std::string& text, int x) const
+    {
+        unsigned int i;
+        int size = 0;
+
+        for (i = 0; i < text.size(); ++i)
+        {
+            size += getWidth(text.at(i));
+
+            if (size > x)
+            {
+                return i;
+            }
+        }
+
+        return text.size();
+    }
+}