Remove automatic consistent formspec size <-> font size (now has to be done manually)

Set builtin formspecs to autoscale in order to get consistent formspec look and feel
Uncouple label positioning from font size (May break some formspecs but is required to allow manual font adjustment)

builtin/mainmenu/init.lua

@@ -139,10 +139,9 @@ local function init_globals()
 	tv_main:add(tab_credits)
 
 	tv_main:set_global_event_handler(main_event_handler)
-
-	if PLATFORM == "Android" then
 	tv_main:set_fixed_size(false)
-	else
+
+	if not (PLATFORM == "Android") then
 		tv_main:set_tab(core.setting_get("maintab_LAST"))
 	end
 	ui.set_default("maintab")

src/game.cpp

@@ -1024,11 +1024,7 @@ static inline void create_formspec_menu(GUIFormSpecMenu **cur_formspec,
 	}
 }
 
-#ifdef __ANDROID__
 #define SIZE_TAG "size[11,5.5]"
-#else
-#define SIZE_TAG "size[11,5.5,true]"
-#endif
 
 static void show_chat_menu(GUIFormSpecMenu **cur_formspec,
 		InventoryManager *invmgr, IGameDef *gamedef,

src/guiFormSpecMenu.cpp

@@ -74,39 +74,6 @@ static unsigned int font_line_height(gui::IGUIFont *font)
 	return font->getDimension(L"Ay").Height + font->getKerningHeight();
 }
 
-static gui::IGUIFont *select_font_by_line_height(double target_line_height)
-{
-	// We don't get to directly select a font according to its
-	// baseline-to-baseline height.  Rather, we select by em size.
-	// The ratio between these varies between fonts.  The font
-	// engine also takes its size parameter not specified in pixels,
-	// as we want, but scaled by display density and gui_scaling,
-	// so invert that scaling here.  Use a binary search among
-	// requested sizes to find the right font.  Our starting bounds
-	// are an em height of 1 (being careful not to request size 0,
-	// which crashes the freetype system) and an em height of the
-	// target baseline-to-baseline height.
-	unsigned int loreq = ceil(1 / porting::getDisplayDensity()
-				/ g_settings->getFloat("gui_scaling"));
-	unsigned int hireq = ceil(target_line_height
-				/ porting::getDisplayDensity()
-				/ g_settings->getFloat("gui_scaling"));
-	unsigned int lohgt = font_line_height(g_fontengine->getFont(loreq));
-	unsigned int hihgt = font_line_height(g_fontengine->getFont(hireq));
-	while(hireq - loreq > 1 && lohgt != hihgt) {
-		unsigned int nureq = (loreq + hireq) >> 1;
-		unsigned int nuhgt = font_line_height(g_fontengine->getFont(nureq));
-		if(nuhgt < target_line_height) {
-			loreq = nureq;
-			lohgt = nuhgt;
-		} else {
-			hireq = nureq;
-			hihgt = nuhgt;
-		}
-	}
-	return g_fontengine->getFont(target_line_height - lohgt < hihgt - target_line_height ? loreq : hireq);
-}
-
 GUIFormSpecMenu::GUIFormSpecMenu(irr::IrrlichtDevice* dev,
 		gui::IGUIElement* parent, s32 id, IMenuManager *menumgr,
 		InventoryManager *invmgr, IGameDef *gamedef,
@@ -950,7 +917,7 @@ void GUIFormSpecMenu::parsePwdField(parserData* data,std::string element)
 
 		if (label.length() >= 1)
 		{
-			int font_height = font_line_height(m_font);
+			int font_height = g_fontengine->getTextHeight();
 			rect.UpperLeftCorner.Y -= font_height;
 			rect.LowerRightCorner.Y = rect.UpperLeftCorner.Y + font_height;
 			Environment->addStaticText(spec.flabel.c_str(), rect, false, true, this, 0);
@@ -1033,7 +1000,7 @@ void GUIFormSpecMenu::parseSimpleField(parserData* data,
 
 		if (label.length() >= 1)
 		{
-			int font_height = font_line_height(m_font);
+			int font_height = g_fontengine->getTextHeight();
 			rect.UpperLeftCorner.Y -= font_height;
 			rect.LowerRightCorner.Y = rect.UpperLeftCorner.Y + font_height;
 			Environment->addStaticText(spec.flabel.c_str(), rect, false, true, this, 0);
@@ -1130,7 +1097,7 @@ void GUIFormSpecMenu::parseTextArea(parserData* data,
 
 		if (label.length() >= 1)
 		{
-			int font_height = font_line_height(m_font);
+			int font_height = g_fontengine->getTextHeight();
 			rect.UpperLeftCorner.Y -= font_height;
 			rect.LowerRightCorner.Y = rect.UpperLeftCorner.Y + font_height;
 			Environment->addStaticText(spec.flabel.c_str(), rect, false, true, this, 0);
@@ -1177,8 +1144,6 @@ void GUIFormSpecMenu::parseLabel(parserData* data,std::string element)
 		if(!data->explicit_size)
 			errorstream<<"WARNING: invalid use of label without a size[] element"<<std::endl;
 
-		int font_height = font_line_height(m_font);
-
 		text = unescape_string(text);
 		std::vector<std::string> lines = split(text, '\n');
 
@@ -1195,9 +1160,9 @@ void GUIFormSpecMenu::parseLabel(parserData* data,std::string element)
 			s32 posy = pos.Y + ((float)i) * spacing.Y * 2.0 / 5.0;
 			std::wstring wlabel = narrow_to_wide(lines[i].c_str());
 			core::rect<s32> rect = core::rect<s32>(
-				pos.X, posy - font_height,
+				pos.X, posy - m_btn_height,
 				pos.X + m_font->getDimension(wlabel.c_str()).Width,
-				posy + font_height);
+				posy + m_btn_height);
 			FieldSpec spec(
 				L"",
 				wlabel,
@@ -1974,11 +1939,9 @@ void GUIFormSpecMenu::regenerateGui(v2u32 screensize)
 		imgsize = v2s32(use_imgsize, use_imgsize);
 		spacing = v2s32(use_imgsize*5.0/4, use_imgsize*15.0/13);
 		padding = v2s32(use_imgsize*3.0/8, use_imgsize*3.0/8);
-		double target_font_height = use_imgsize*15.0/13 * 0.4;
-		target_font_height *= g_settings->getFloat("font_size")/TTF_DEFAULT_FONT_SIZE;
 		m_btn_height = use_imgsize*15.0/13 * 0.35;
 
-		m_font = select_font_by_line_height(target_font_height);
+		m_font = g_fontengine->getFont();
 
 		mydata.size = v2s32(
 			padding.X*2+spacing.X*(mydata.invsize.X-1.0)+imgsize.X,