From dd604afc891dc8e8357ad5e2846768eb0864dda2 Mon Sep 17 00:00:00 2001
From: Aaron van Geffen <aaron@aaronweb.net>
Date: Wed, 23 Dec 2015 02:56:47 +0900
Subject: [PATCH] Use FontConfig to find suitable TrueType fonts on Linux and
 OS X. Fixes #2537.

---
 CMakeLists.txt          |  5 +++++
 src/drawing/string.c    |  7 +++++--
 src/platform/platform.h |  2 ++
 src/platform/posix.c    | 28 ++++++++++++++++++++++++++++
 src/platform/windows.c  |  8 ++++++++
 5 files changed, 48 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b88bc3f3c1..c54b8d22b4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -161,6 +161,11 @@ if (UNIX)
 		list(APPEND RCT2_SECTIONS "${CMAKE_BINARY_DIR}/openrct2_data_section.o" "${CMAKE_BINARY_DIR}/openrct2_text_section.o")
 		set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-T,\"${CMAKE_CURRENT_SOURCE_DIR}/distribution/linux/ld_script.xc\"")
 	endif (APPLE)
+
+	# FontConfig for TrueType fonts.
+	find_path(FONTCONFIG_INCLUDE_DIR fontconfig/fontconfig.h)
+	find_library(FONTCONFIG_LIBRARY NAMES fontconfig)
+	TARGET_LINK_LIBRARIES(${PROJECT} ${FONTCONFIG_LIBRARY})
 endif (UNIX)
 
 # install into ${CMAKE_INSTALL_PREFIX}/bin/
diff --git a/src/drawing/string.c b/src/drawing/string.c
index f4241b4b4e..f12f0af0e0 100644
--- a/src/drawing/string.c
+++ b/src/drawing/string.c
@@ -888,8 +888,11 @@ bool ttf_initialise()
 		for (int i = 0; i < 4; i++) {
 			TTFFontDescriptor *fontDesc = &(gCurrentTTFFontSet->size[i]);
 
-			utf8 fontPath[MAX_PATH] = "C:\\Windows\\Fonts\\";
-			strcat(fontPath, fontDesc->filename);
+			utf8 fontPath[MAX_PATH];
+			if (!platform_get_font_path(fontDesc, fontPath)) {
+				log_error("Unable to load font '%s'", fontDesc->font_name);
+				return false;
+			}
 
 			fontDesc->font = TTF_OpenFont(fontPath, fontDesc->ptSize);
 			if (fontDesc->font == NULL) {
diff --git a/src/platform/platform.h b/src/platform/platform.h
index 0d65b6c566..c9e3eb23ad 100644
--- a/src/platform/platform.h
+++ b/src/platform/platform.h
@@ -28,6 +28,7 @@
 #include <SDL.h>
 
 #include "../common.h"
+#include "../drawing/font.h"
 
 #ifndef MAX_PATH
 #define MAX_PATH 260
@@ -161,6 +162,7 @@ uint8 platform_get_locale_currency();
 uint16 platform_get_locale_language();
 uint8 platform_get_locale_measurement_format();
 uint8 platform_get_locale_temperature_format();
+bool platform_get_font_path(TTFFontDescriptor *font, utf8 *buffer);
 
 bool platform_check_steam_overlay_attached();
 
diff --git a/src/platform/posix.c b/src/platform/posix.c
index 8a09b85b6f..8bfd8eb260 100644
--- a/src/platform/posix.c
+++ b/src/platform/posix.c
@@ -37,6 +37,7 @@
 #include <fnmatch.h>
 #include <locale.h>
 #include <time.h>
+#include "fontconfig/fontconfig.h"
 
 // The name of the mutex used to prevent multiple instances of the game from running
 #define SINGLE_INSTANCE_MUTEX_NAME "RollerCoaster Tycoon 2_GSKMUTEX"
@@ -757,4 +758,31 @@ uint8 platform_get_locale_temperature_format(){
 	return TEMPERATURE_FORMAT_C;
 }
 
+bool platform_get_font_path(TTFFontDescriptor *font, utf8 *buffer)
+{
+	FcConfig* config = FcInitLoadConfigAndFonts();
+	FcPattern* pat = FcNameParse((const FcChar8*) font->font_name);
+
+	FcConfigSubstitute(config, pat, FcMatchPattern);
+	FcDefaultSubstitute(pat);
+
+	bool found = false;
+	FcResult result = FcResultNoMatch;
+	FcPattern* match = FcFontMatch(config, pat, &result);
+
+	if (match)
+	{
+		FcChar8* filename = NULL;
+		if (FcPatternGetString(match, FC_FILE, 0, &filename) == FcResultMatch)
+		{
+			found = true;
+			strcpy(buffer, (utf8*) filename);
+		}
+		FcPatternDestroy(match);
+	}
+
+	FcPatternDestroy(pat);
+	return found;
+}
+
 #endif
diff --git a/src/platform/windows.c b/src/platform/windows.c
index d07f765fcd..5b1476b769 100644
--- a/src/platform/windows.c
+++ b/src/platform/windows.c
@@ -897,4 +897,12 @@ void platform_get_exe_path(utf8 *outPath)
 	_wfullpath(exePath, tempPath, MAX_PATH);
 	WideCharToMultiByte(CP_UTF8, 0, exePath, countof(exePath), outPath, MAX_PATH, NULL, NULL);
 }
+
+void platform_get_font_path(TTFFontDescriptor *font, utf8 *buffer)
+{
+	strcpy(buffer, "C:\\Windows\\Fonts\\");
+	strcat(buffer, font->filename);
+	return true;
+}
+
 #endif