From 16b9b571bc3f8371416c25c4deaeeb6ab6d7454c Mon Sep 17 00:00:00 2001
From: Jarod42 <Jarod42@users.noreply.github.com>
Date: Wed, 14 Aug 2024 23:42:11 +0200
Subject: [PATCH] Apply Guichan's changes from
 390f8e8d8a20b7120cfbd2b9937a5f423bb05d83 (Mar 22th 2008) Patch has been
 applied. http://code.google.com/p/guichan/issues/detail?id=39

---
 TODO                         |  2 +-
 include/guisan/imagefont.hpp | 13 +++++++++
 src/imagefont.cpp            | 51 ++++++++++++++++++++++++++++++++++--
 3 files changed, 63 insertions(+), 3 deletions(-)

diff --git a/TODO b/TODO
index b3f88c3..9a4b62f 100644
--- a/TODO
+++ b/TODO
@@ -1,4 +1,4 @@
-* Continue rebasing from df337fb783bc0f8ce1bab1bc672e301f88b9d364
+* Continue rebasing from d0400d4714bcdad2d1f00283c80e77317147ea5c
 * Add a focus listener interface.
 * Make focus apply synchronously.
 * Graphics and input objects for DirectX.
diff --git a/include/guisan/imagefont.hpp b/include/guisan/imagefont.hpp
index eb13c53..403cffe 100644
--- a/include/guisan/imagefont.hpp
+++ b/include/guisan/imagefont.hpp
@@ -110,6 +110,19 @@ pqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"); @endcode
          */
         ImageFont(const std::string& filename, const std::string& glyphs);
 
+        /**
+         * Constructor. Takes an image containing the font and
+         * a string containing the glyphs. The glyphs in the string should
+         * be in the same order as they appear in the font image.
+         * The image will be deleted in the destructor.
+         *
+         * @param image The image with font glyphs.
+         * @param glyphs The glyphs found in the image.
+         * @throws Exception when glyph list is incorrect or the font image is
+         *                   is missing.
+         */
+        ImageFont(Image* image, const std::string& glyphs);
+
         /**
          * Constructor. Takes an image file containing the font and
          * two boundaries of ASCII values. The font image should include
diff --git a/src/imagefont.cpp b/src/imagefont.cpp
index db28cec..a61ff96 100644
--- a/src/imagefont.cpp
+++ b/src/imagefont.cpp
@@ -75,14 +75,14 @@ namespace gcn
         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.");
@@ -118,6 +118,53 @@ namespace gcn
         mGlyphSpacing = 0;
     }
 
+    ImageFont::ImageFont(Image* image, const std::string& glyphs)
+    {
+        mFilename = "Image*";
+        if (image == NULL)
+        {
+            throw GCN_EXCEPTION("Font image is NULL");
+        }
+        mImage = image;
+
+        const 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;
+
+        for (i = 0; i < (int) glyphs.size(); ++i)
+        {
+            const unsigned char k = glyphs.at(i);
+            mGlyph[k] = scanForGlyph(k, x, y, separator);
+            // Update x and 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)