# HG changeset patch
# User rubidium <rubidium@openttd.org>
# Date 2013-06-25 20:21:21
# Node ID 799c881fb514329bbfcce06a9ae25d8902a26447
# Parent  a030e602a1ba29f6f6563fb17b56960546ba15b2

(svn r25463) -Codechange: export more size related information from the fonts

diff --git a/src/fontcache.cpp b/src/fontcache.cpp
--- a/src/fontcache.cpp
+++ b/src/fontcache.cpp
@@ -25,13 +25,16 @@ static const int ASCII_LETTERSTART = 32;
 static const int MAX_FONT_SIZE     = 72; ///< Maximum font size.
 
 /** Default heights for the different sizes of fonts. */
-static const int _default_font_height[FS_END] = {10, 6, 18, 10};
+static const int _default_font_height[FS_END]   = {10, 6, 18, 10};
+static const int _default_font_ascender[FS_END] = { 8, 5, 15,  8};
 
 /**
  * Create a new font cache.
  * @param fs The size of the font.
  */
-FontCache::FontCache(FontSize fs) : parent(FontCache::Get(fs)), fs(fs), height(_default_font_height[fs])
+FontCache::FontCache(FontSize fs) : parent(FontCache::Get(fs)), fs(fs), height(_default_font_height[fs]),
+		ascender(_default_font_ascender[fs]), descender(_default_font_ascender[fs] - _default_font_height[fs]),
+		units_per_em(1)
 {
 	assert(parent == NULL || this->fs == parent->fs);
 	FontCache::caches[this->fs] = this;
@@ -187,8 +190,6 @@ bool SpriteFontCache::GetDrawGlyphShadow
 class FreeTypeFontCache : public FontCache {
 private:
 	FT_Face face;  ///< The font face associated with this font.
-	int ascender;  ///< The ascender value of this font.
-	int descender; ///< The descender value of this font.
 
 	/** Container for information about a glyph. */
 	struct GlyphEntry {
@@ -272,9 +273,10 @@ FreeTypeFontCache::FreeTypeFontCache(Fon
 		FT_Set_Pixel_Sizes(this->face, 0, n);
 	}
 
-	this->ascender  = this->face->size->metrics.ascender >> 6;
-	this->descender = this->face->size->metrics.descender >> 6;
-	this->height    = this->ascender - this->descender;
+	this->units_per_em = this->face->units_per_EM;
+	this->ascender     = this->face->size->metrics.ascender >> 6;
+	this->descender    = this->face->size->metrics.descender >> 6;
+	this->height       = this->ascender - this->descender;
 }
 
 /**
diff --git a/src/fontcache.h b/src/fontcache.h
--- a/src/fontcache.h
+++ b/src/fontcache.h
@@ -26,16 +26,43 @@ private:
 protected:
 	FontCache *parent;                ///< The parent of this font cache.
 	const FontSize fs;                ///< The size of the font.
-	int height;                       ///< The height of the font;
+	int height;                       ///< The height of the font.
+	int ascender;                     ///< The ascender value of the font.
+	int descender;                    ///< The descender value of the font.
+	int units_per_em;                 ///< The units per EM value of the font.
 public:
 	FontCache(FontSize fs);
 	virtual ~FontCache();
 
 	/**
+	 * Get the FontSize of the font.
+	 * @return The FontSize.
+	 */
+	inline FontSize GetSize() const { return this->fs; }
+
+	/**
 	 * Get the height of the font.
 	 * @return The height of the font.
 	 */
-	inline int GetHeight() { return this->height; }
+	inline int GetHeight() const { return this->height; }
+
+	/**
+	 * Get the ascender value of the font.
+	 * @return The ascender value of the font.
+	 */
+	inline int GetAscender() const { return this->ascender; }
+
+	/**
+	 * Get the descender value of the font.
+	 * @return The descender value of the font.
+	 */
+	inline int GetDescender() const{ return this->descender; }
+
+	/**
+	 * Get the units per EM value of the font.
+	 * @return The units per EM value of the font.
+	 */
+	inline int GetUnitsPerEM() const { return this->units_per_em; }
 
 	/**
 	 * Get the SpriteID mapped to the given key