Add configurable font shadow.

minetest.conf.example

@@ -205,12 +205,15 @@
 # Path to TrueTypeFont or bitmap
 #font_path = fonts/liberationsans.ttf
 #font_size = 13
+# Font shadow offset, if 0 then shadow will not be drawn.
+#font_shadow = 1
 #mono_font_path = fonts/liberationmono.ttf
 #mono_font_size = 13
 
 # This font will be used for certain languages
 #fallback_font_path = fonts/DroidSansFallbackFull.ttf
 #fallback_font_size = 13
+#fallback_font_shadow = 1
 
 #
 # Server stuff

src/cguittfont/CGUITTFont.cpp

@@ -199,7 +199,7 @@ void SGUITTGlyph::unload()
 
 //////////////////////
 
-CGUITTFont* CGUITTFont::createTTFont(IGUIEnvironment *env, const io::path& filename, const u32 size, const bool antialias, const bool transparency)
+CGUITTFont* CGUITTFont::createTTFont(IGUIEnvironment *env, const io::path& filename, const u32 size, const bool antialias, const bool transparency, const u32 shadow)
 {
 	if (!c_libraryLoaded)
 	{
@@ -216,6 +216,8 @@ CGUITTFont* CGUITTFont::createTTFont(IGUIEnvironment *env, const io::path& filen
 		return 0;
 	}
 
+	font->shadow_offset = shadow;
+
 	return font;
 }
 
@@ -625,6 +627,14 @@ void CGUITTFont::draw(const core::stringw& text, const core::rect<s32>& position
 		CGUITTGlyphPage* page = n->getValue();
 
 		if (!use_transparency) color.color |= 0xff000000;
+
+		if (shadow_offset) {
+			for (size_t i = 0; i < page->render_positions.size(); ++i)
+				page->render_positions[i] += core::vector2di(shadow_offset, shadow_offset);
+			Driver->draw2DImageBatch(page->texture, page->render_positions, page->render_source_rects, clip, video::SColor(255, 0, 0, 0), true);
+			for (size_t i = 0; i < page->render_positions.size(); ++i)
+				page->render_positions[i] -= core::vector2di(shadow_offset, shadow_offset);
+		}
 		Driver->draw2DImageBatch(page->texture, page->render_positions, page->render_source_rects, clip, color, true);
 	}
 }

src/cguittfont/CGUITTFont.h

@@ -207,7 +207,7 @@ namespace gui
 			//! \param antialias set the use_monochrome (opposite to antialias) flag
 			//! \param transparency set the use_transparency flag
 			//! \return Returns a pointer to a CGUITTFont.  Will return 0 if the font failed to load.
-			static CGUITTFont* createTTFont(IGUIEnvironment *env, const io::path& filename, const u32 size, const bool antialias = true, const bool transparency = true);
+			static CGUITTFont* createTTFont(IGUIEnvironment *env, const io::path& filename, const u32 size, const bool antialias = true, const bool transparency = true, const u32 shadow = 0);
 			static CGUITTFont* createTTFont(IrrlichtDevice *device, const io::path& filename, const u32 size, const bool antialias = true, const bool transparency = true);
 			static CGUITTFont* create(IGUIEnvironment *env, const io::path& filename, const u32 size, const bool antialias = true, const bool transparency = true);
 			static CGUITTFont* create(IrrlichtDevice *device, const io::path& filename, const u32 size, const bool antialias = true, const bool transparency = true);
@@ -369,6 +369,7 @@ namespace gui
 			s32 GlobalKerningWidth;
 			s32 GlobalKerningHeight;
 			core::ustring Invisible;
+			u32 shadow_offset;
 	};
 
 } // end namespace gui

src/defaultsettings.cpp

@@ -153,10 +153,12 @@ void set_default_settings(Settings *settings)
 	settings->setDefault("freetype", "true");
 	settings->setDefault("font_path", porting::getDataPath("fonts" DIR_DELIM "liberationsans.ttf"));
 	settings->setDefault("font_size", "13");
+	settings->setDefault("font_shadow", "1");
 	settings->setDefault("mono_font_path", porting::getDataPath("fonts" DIR_DELIM "liberationmono.ttf"));
 	settings->setDefault("mono_font_size", "13");
 	settings->setDefault("fallback_font_path", porting::getDataPath("fonts" DIR_DELIM "DroidSansFallbackFull.ttf"));
 	settings->setDefault("fallback_font_size", "13");
+	settings->setDefault("fallback_font_shadow", "1");
 #else
 	settings->setDefault("freetype", "false");
 	settings->setDefault("font_path", porting::getDataPath("fonts" DIR_DELIM "fontlucida.png"));

src/main.cpp

@@ -1481,7 +1481,8 @@ int main(int argc, char *argv[])
 			fallback = "fallback_";
 		u16 font_size = g_settings->getU16(fallback + "font_size");
 		font_path = g_settings->get(fallback + "font_path");
-		font = gui::CGUITTFont::createTTFont(guienv, font_path.c_str(), font_size);
+		u32 font_shadow = g_settings->getU16(fallback + "font_shadow");
+		font = gui::CGUITTFont::createTTFont(guienv, font_path.c_str(), font_size, true, true, font_shadow);
 	} else {
 		font = guienv->getFont(font_path.c_str());
 	}