From 542c61397cc3ad6a56e70221a7a0901bb755a8bd Mon Sep 17 00:00:00 2001
From: rubidium <rubidium@openttd.org>
Date: Sun, 20 Nov 2011 08:08:13 +0000
Subject: (svn r23271) -Codechange: don't repeatedly initialise and free the
 freetype library

---
 src/fontcache.cpp | 65 +++++++++++++++++++++++++++++++------------------------
 src/fontcache.h   |  6 ++---
 src/openttd.cpp   |  2 ++
 src/strings.cpp   |  4 ----
 4 files changed, 41 insertions(+), 36 deletions(-)

(limited to 'src')

diff --git a/src/fontcache.cpp b/src/fontcache.cpp
index ec63b1614..a86792db0 100644
--- a/src/fontcache.cpp
+++ b/src/fontcache.cpp
@@ -23,6 +23,14 @@ static const int ASCII_LETTERSTART = 32; ///< First printable ASCII letter.
 /** Semi-constant for the height of the different sizes of fonts. */
 int _font_height[FS_END];
 
+/** Reset the font sizes to the defaults of the sprite based fonts. */
+void ResetFontSizes()
+{
+	_font_height[FS_SMALL]  =  6;
+	_font_height[FS_NORMAL] = 10;
+	_font_height[FS_LARGE]  = 18;
+}
+
 #ifdef WITH_FREETYPE
 #include <ft2build.h>
 #include FT_FREETYPE_H
@@ -809,21 +817,45 @@ static void LoadFreeTypeFont(const char *font_name, FT_Face *face, const char *t
 }
 
 
+static void ResetGlyphCache();
+
+/**
+ * Unload a face and set it to NULL.
+ * @param face the face to unload
+ */
+static void UnloadFace(FT_Face *face)
+{
+	if (*face == NULL) return;
+
+	FT_Done_Face(*face);
+	*face = NULL;
+}
+
+/**
+ * (Re)initialize the freetype related things, i.e. load the non-sprite fonts.
+ */
 void InitFreeType()
 {
 	ResetFontSizes();
+	ResetGlyphCache();
+
+	UnloadFace(&_face_small);
+	UnloadFace(&_face_medium);
+	UnloadFace(&_face_large);
 
 	if (StrEmpty(_freetype.small_font) && StrEmpty(_freetype.medium_font) && StrEmpty(_freetype.large_font)) {
 		DEBUG(freetype, 1, "No font faces specified, using sprite fonts instead");
 		return;
 	}
 
-	if (FT_Init_FreeType(&_library) != FT_Err_Ok) {
-		ShowInfoF("Unable to initialize FreeType, using sprite fonts instead");
-		return;
-	}
+	if (_library == NULL) {
+		if (FT_Init_FreeType(&_library) != FT_Err_Ok) {
+			ShowInfoF("Unable to initialize FreeType, using sprite fonts instead");
+			return;
+		}
 
-	DEBUG(freetype, 2, "Initialized");
+		DEBUG(freetype, 2, "Initialized");
+	}
 
 	/* Load each font */
 	LoadFreeTypeFont(_freetype.small_font,  &_face_small,  "small");
@@ -842,26 +874,11 @@ void InitFreeType()
 	}
 }
 
-static void ResetGlyphCache();
-
-/**
- * Unload a face and set it to NULL.
- * @param face the face to unload
- */
-static void UnloadFace(FT_Face *face)
-{
-	if (*face == NULL) return;
-
-	FT_Done_Face(*face);
-	*face = NULL;
-}
-
 /**
  * Free everything allocated w.r.t. fonts.
  */
 void UninitFreeType()
 {
-	ResetFontSizes();
 	ResetGlyphCache();
 
 	UnloadFace(&_face_small);
@@ -1109,14 +1126,6 @@ uint GetGlyphWidth(FontSize size, WChar key)
 
 #endif /* WITH_FREETYPE */
 
-/** Reset the font sizes to the defaults of the sprite based fonts. */
-void ResetFontSizes()
-{
-	_font_height[FS_SMALL]  =  6;
-	_font_height[FS_NORMAL] = 10;
-	_font_height[FS_LARGE]  = 18;
-}
-
 /* Sprite based glyph mapping */
 
 #include "table/unicode.h"
diff --git a/src/fontcache.h b/src/fontcache.h
index 3445a09ce..a3cceace1 100644
--- a/src/fontcache.h
+++ b/src/fontcache.h
@@ -23,8 +23,6 @@ void SetUnicodeGlyph(FontSize size, uint32 key, SpriteID sprite);
 /** Initialize the glyph map */
 void InitializeUnicodeGlyphMap();
 
-void ResetFontSizes();
-
 #ifdef WITH_FREETYPE
 
 struct FreeTypeSettings {
@@ -62,8 +60,8 @@ bool SetFallbackFont(FreeTypeSettings *settings, const char *language_isocode, i
 #else
 
 /* Stub for initializiation */
-static inline void InitFreeType() { ResetFontSizes(); }
-static inline void UninitFreeType() { ResetFontSizes(); }
+static inline void InitFreeType() { extern void ResetFontSizes(); ResetFontSizes(); }
+static inline void UninitFreeType() {}
 
 /** Get the Sprite for a glyph */
 static inline const Sprite *GetGlyph(FontSize size, uint32 key)
diff --git a/src/openttd.cpp b/src/openttd.cpp
index c9dbb6d82..28fb91d7a 100644
--- a/src/openttd.cpp
+++ b/src/openttd.cpp
@@ -303,6 +303,8 @@ static void ShutdownGame()
 
 	/* Close all and any open filehandles */
 	FioCloseAll();
+
+	UninitFreeType();
 }
 
 /**
diff --git a/src/strings.cpp b/src/strings.cpp
index cfa38bf3f..3054dcdaf 100644
--- a/src/strings.cpp
+++ b/src/strings.cpp
@@ -1750,10 +1750,7 @@ const char *GetCurrentLanguageIsoCode()
  */
 bool MissingGlyphSearcher::FindMissingGlyphs(const char **str)
 {
-#ifdef WITH_FREETYPE
-	UninitFreeType();
 	InitFreeType();
-#endif
 	const Sprite *question_mark[FS_END];
 
 	for (FontSize size = FS_BEGIN; size < FS_END; size++) {
@@ -1856,7 +1853,6 @@ void CheckForMissingGlyphsInLoadedLanguagePack(bool base_font)
 			/* Our fallback font does miss characters too, so keep the
 			 * user chosen font as that is more likely to be any good than
 			 * the wild guess we made */
-			UninitFreeType();
 			InitFreeType();
 		}
 	}
-- 
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