CLuaInstance: Add DynFonts for lua scripts

- You can create fixed-size fonts for use in Lua Scripts
 - The fonts are deleted after the script
 - The use of fonts is limited to the following functions currently:
   - RenderString()
   - getRenderWidth()
   - FontHeight()
 - Example in Lua scripts:
   Normal usage:
     local font = FONT.MENU
     RenderString(font, ....)
   Use DynFonts:
     Creates a font with height of 50px:
       local font = n:getDynFont(0, 50)
       local useDynFont = true
       RenderString(useDynFont, font, ....)
           or
     Creates a font in which the text("Example: xyz") has a width of 200px:
       local font = n:getDynFont(200, 0, "Example: xyz")
       local useDynFont = true
       RenderString(useDynFont, font, ....)

 - Set Lua api version to 1.13

src/gui/luainstance.cpp

@@ -34,6 +34,7 @@
 #include <gui/filebrowser.h>
 #include <gui/movieplayer.h>
 #include <gui/infoclock.h>
+#include <driver/neutrinofonts.h>
 #include <driver/pictureviewer/pictureviewer.h>
 #include <neutrino.h>
 #include <zapit/types.h>
@@ -310,6 +311,18 @@ static void set_lua_variables(lua_State *L)
 		{ NULL, 0 }
 	};
 
+	table_key dynfont[] =
+	{
+		{ "STYLE_REGULAR",	(lua_Integer)CNeutrinoFonts::FONT_STYLE_REGULAR },
+		{ "STYLE_BOLD",		(lua_Integer)CNeutrinoFonts::FONT_STYLE_BOLD },
+		{ "STYLE_ITALIC",	(lua_Integer)CNeutrinoFonts::FONT_STYLE_ITALIC },
+		{ "MAX",		(lua_Integer)CNeutrinoFonts::DYNFONTEXT_MAX },
+		{ "MAXIMUM_FONTS",	(lua_Integer)CLuaInstance::DYNFONT_MAXIMUM_FONTS },
+		{ "TO_WIDE",		(lua_Integer)CLuaInstance::DYNFONT_TO_WIDE },
+		{ "TOO_HIGH",		(lua_Integer)CLuaInstance::DYNFONT_TOO_HIGH },
+		{ NULL, 0 }
+	};
+
 	/* list of environment variable arrays to be exported */
 	lua_envexport e[] =
 	{
@@ -321,6 +334,7 @@ static void set_lua_variables(lua_State *L)
 		{ "APIVERSION",  apiversion },
 		{ "PLAYSTATE",   playstate },
 		{ "CC",          ccomponents },
+		{ "DYNFONT",     dynfont },
 		{ NULL, NULL }
 	};
 
@@ -564,6 +578,7 @@ const luaL_Reg CLuaInstance::methods[] =
 	{ "checkVersion", CLuaInstance::checkVersion },
 	{ "createChannelIDfromUrl", CLuaInstance::createChannelIDfromUrl },
 	{ "enableInfoClock", CLuaInstance::enableInfoClock },
+	{ "getDynFont", CLuaInstance::getDynFont },
 	{ NULL, NULL }
 };
 
@@ -671,12 +686,14 @@ int CLuaInstance::PaintBox(lua_State *L)
 	y = luaL_checkint(L, 3);
 	w = luaL_checkint(L, 4);
 	h = luaL_checkint(L, 5);
+
 #if HAVE_COOL_HARDWARE
 	c = luaL_checkunsigned(L, 6);
 #else
 	/* luaL_checkint does not like e.g. 0xffcc0000 on powerpc (returns INT_MAX) instead */
 	c = (unsigned int)luaL_checknumber(L, 6);
 #endif
+
 	if (count > 6)
 		radius = luaL_checkint(L, 7);
 	if (count > 7)
@@ -872,7 +889,8 @@ int CLuaInstance::GetSize(lua_State *L)
 
 int CLuaInstance::RenderString(lua_State *L)
 {
-	int x, y, w, boxh, f, center;
+	int x, y, w, boxh, f, center, id;
+	Font* font = NULL;
 	unsigned int c;
 	const char *text;
 	int numargs = lua_gettop(L);
@@ -884,53 +902,110 @@ int CLuaInstance::RenderString(lua_State *L)
 	CLuaData *W = CheckData(L, 1);
 	if (!W || !W->fbwin)
 		return 0;
-	f = luaL_checkint(L, 2);	/* font number, use FONT_TYPE_XXX in the script */
-	text = luaL_checkstring(L, 3);	/* text */
-	x = luaL_checkint(L, 4);
-	y = luaL_checkint(L, 5);
-	if (numargs > 5)
+
+	int step = 0;
+	bool isDynFont = false;
+	if (lua_isboolean(L, 2)) {
+		if (lua_toboolean(L, 2) == true)
+			isDynFont = true;
+		step = 1;
+	}
+
+	if (!isDynFont) {
+		f = luaL_checkint(L, 2+step);	/* font number, use FONT_TYPE_XXX in the script */
+		if (f >= SNeutrinoSettings::FONT_TYPE_COUNT || f < 0)
+			f = SNeutrinoSettings::FONT_TYPE_MENU;
+		font = g_Font[f];
+	}
+	else {
+		id = luaL_checkint(L, 2+step);	/* dynfont */
+		for (fontmap_iterator_t it = W->fontmap.begin(); it != W->fontmap.end(); ++it) {
+			if (it->first == id) {
+				font = it->second;
+				break;
+			}
+		}
+		if (font == NULL) {
+			printf("[CLuaInstance::%s:%d] no font found\n", __func__, __LINE__);
+			lua_pushinteger(L, 0); /* no font found */
+			return 1;
+		}
+	}
+
+	text = luaL_checkstring(L, 3+step);	/* text */
+	x = luaL_checkint(L, 4+step);
+	y = luaL_checkint(L, 5+step);
+	if (numargs > 5+step)
 #if HAVE_COOL_HARDWARE
-		c = luaL_checkunsigned(L, 6);
+		c = luaL_checkunsigned(L, 6+step);
 #else
-		c = luaL_checkint(L, 6);
+		c = luaL_checkint(L, 6+step);
 #endif
-	if (numargs > 6)
-		w = luaL_checkint(L, 7);
+	if (numargs > 6+step)
+		w = luaL_checkint(L, 7+step);
 	else
 		w = W->fbwin->dx - x;
-	if (numargs > 7)
-		boxh = luaL_checkint(L, 8);
-	if (numargs > 8)
-		center = luaL_checkint(L, 9);
-	if (f >= SNeutrinoSettings::FONT_TYPE_COUNT || f < 0)
-		f = SNeutrinoSettings::FONT_TYPE_MENU;
-	int rwidth = g_Font[f]->getRenderWidth(text);
+	if (numargs > 7+step)
+		boxh = luaL_checkint(L, 8+step);
+	if (numargs > 8+step)
+		center = luaL_checkint(L, 9+step);
+
+	int rwidth = font->getRenderWidth(text);
+
 	if (center) { /* center the text inside the box */
 		if (rwidth < w)
 			x += (w - rwidth) / 2;
 	}
 	checkMagicMask(c);
 	if (boxh > -1) /* if boxh < 0, don't paint string */
-		W->fbwin->RenderString(g_Font[f], x, y, w, text, c, boxh);
+		W->fbwin->RenderString(font, x, y, w, text, c, boxh);
 	lua_pushinteger(L, rwidth); /* return renderwidth */
 	return 1;
 }
 
 int CLuaInstance::getRenderWidth(lua_State *L)
 {
-	int f;
+	int f, id;
+	Font* font = NULL;
 	const char *text;
 	DBG1("CLuaInstance::%s %d\n", __func__, lua_gettop(L));
 
 	CLuaData *W = CheckData(L, 1);
 	if (!W)
 		return 0;
-	f = luaL_checkint(L, 2);	/* font number, use FONT['xxx'] for FONT_TYPE_xxx in the script */
-	text = luaL_checkstring(L, 3);	/* text */
-	if (f >= SNeutrinoSettings::FONT_TYPE_COUNT || f < 0)
-		f = SNeutrinoSettings::FONT_TYPE_MENU;
 
-	lua_pushinteger(L, (int)g_Font[f]->getRenderWidth(text));
+	int step = 0;
+	bool isDynFont = false;
+	if (lua_isboolean(L, 2)) {
+		if (lua_toboolean(L, 2) == true)
+			isDynFont = true;
+		step = 1;
+	}
+
+	if (!isDynFont) {
+		f = luaL_checkint(L, 2+step);	/* font number, use FONT_TYPE_XXX in the script */
+		if (f >= SNeutrinoSettings::FONT_TYPE_COUNT || f < 0)
+			f = SNeutrinoSettings::FONT_TYPE_MENU;
+		font = g_Font[f];
+	}
+	else {
+		id = luaL_checkint(L, 2+step);	/* dynfont */
+		for (fontmap_iterator_t it = W->fontmap.begin(); it != W->fontmap.end(); ++it) {
+			if (it->first == id) {
+				font = it->second;
+				break;
+			}
+		}
+		if (font == NULL) {
+			printf("[CLuaInstance::%s:%d] no font found\n", __func__, __LINE__);
+			lua_pushinteger(L, 0); /* no font found */
+			return 1;
+		}
+	}
+
+	text = luaL_checkstring(L, 3+step);	/* text */
+
+	lua_pushinteger(L, (int)font->getRenderWidth(text));
 	return 1;
 }
 
@@ -961,16 +1036,44 @@ int CLuaInstance::GetInput(lua_State *L)
 
 int CLuaInstance::FontHeight(lua_State *L)
 {
-	int f;
+	int f, id;
+	Font* font = NULL;
 	DBG1("CLuaInstance::%s %d\n", __func__, lua_gettop(L));
 
 	CLuaData *W = CheckData(L, 1);
 	if (!W)
 		return 0;
-	f = luaL_checkint(L, 2);	/* font number, use FONT['xxx'] for FONT_TYPE_xxx in the script */
-	if (f >= SNeutrinoSettings::FONT_TYPE_COUNT || f < 0)
-		f = SNeutrinoSettings::FONT_TYPE_MENU;
-	lua_pushinteger(L, (int)g_Font[f]->getHeight());
+
+	int step = 0;
+	bool isDynFont = false;
+	if (lua_isboolean(L, 2)) {
+		if (lua_toboolean(L, 2) == true)
+			isDynFont = true;
+		step = 1;
+	}
+
+	if (!isDynFont) {
+		f = luaL_checkint(L, 2+step);	/* font number, use FONT_TYPE_XXX in the script */
+		if (f >= SNeutrinoSettings::FONT_TYPE_COUNT || f < 0)
+			f = SNeutrinoSettings::FONT_TYPE_MENU;
+		font = g_Font[f];
+	}
+	else {
+		id = luaL_checkint(L, 2+step);	/* dynfont */
+		for (fontmap_iterator_t it = W->fontmap.begin(); it != W->fontmap.end(); ++it) {
+			if (it->first == id) {
+				font = it->second;
+				break;
+			}
+		}
+		if (font == NULL) {
+			printf("[CLuaInstance::%s:%d] no font found\n", __func__, __LINE__);
+			lua_pushinteger(L, 0); /* no font found */
+			return 1;
+		}
+	}
+
+	lua_pushinteger(L, (int)font->getHeight());
 	return 1;
 }
 
@@ -978,6 +1081,12 @@ int CLuaInstance::GCWindow(lua_State *L)
 {
 	DBG1("CLuaInstance::%s %d\n", __func__, lua_gettop(L));
 	CLuaData *w = (CLuaData *)lua_unboxpointer(L, 1);
+
+	if (w && w->fbwin) {
+		w->fontmap.clear();
+	}
+	CNeutrinoFonts::getInstance()->deleteDynFontExtAll();
+
 	delete w->fbwin;
 	w->rcinput = NULL;
 	delete w;
@@ -2808,3 +2917,56 @@ int CLuaInstance::enableInfoClock(lua_State *L)
 }
 
 // --------------------------------------------------------------------------------
+
+int CLuaInstance::getDynFont(lua_State *L)
+{
+	int numargs = lua_gettop(L);
+	CLuaData *W = CheckData(L, 1);
+	if (!W || !W->fbwin)
+		return 0;
+
+	if (numargs < 3) {
+		printf("CLuaInstance::%s: not enough arguments (%d, expected 2)\n", __func__, numargs);
+		return 0;
+	}
+
+	lua_Integer fontID = W->fontmap.size();
+	if (fontID >= CNeutrinoFonts::DYNFONTEXT_MAX) {
+		lua_pushnil(L);
+		lua_pushinteger(L, DYNFONT_MAXIMUM_FONTS);
+		return 2;
+	}
+
+	lua_Integer dx = 0, dy = 0, style = CNeutrinoFonts::FONT_STYLE_REGULAR;
+	std::string text="";
+
+	dx = luaL_checkint(L, 2);
+	if (dx > (lua_Integer)CFrameBuffer::getInstance()->getScreenWidth(true)) {
+		lua_pushnil(L);
+		lua_pushinteger(L, DYNFONT_TO_WIDE);
+		return 2;
+	}
+	dy = luaL_checkint(L, 3);
+	if (dy > 100) {
+		lua_pushnil(L);
+		lua_pushinteger(L, DYNFONT_TOO_HIGH);
+		return 2;
+	}
+	if (numargs > 3)
+		text = luaL_checkstring(L, 4);
+	if (numargs > 4) {
+		style = luaL_checkint(L, 5);
+		if (style > CNeutrinoFonts::FONT_STYLE_ITALIC)
+			style = CNeutrinoFonts::FONT_STYLE_REGULAR;
+	}
+
+	Font* f = CNeutrinoFonts::getInstance()->getDynFontExt(dx, dy, fontID, text, style);
+
+	lua_Integer id = fontID + 1;
+	W->fontmap.insert(fontmap_pair_t(id, f));
+	lua_pushinteger(L, id);
+	lua_pushinteger(L, DYNFONT_NO_ERROR);
+	return 2;
+}
+
+// --------------------------------------------------------------------------------

src/gui/luainstance.h

@@ -34,13 +34,18 @@ extern "C" {
 #include <vector>
 
 #define LUA_API_VERSION_MAJOR 1
-#define LUA_API_VERSION_MINOR 12
+#define LUA_API_VERSION_MINOR 13
+
+typedef std::pair<lua_Integer, Font*> fontmap_pair_t;
+typedef std::map<lua_Integer, Font*> fontmap_t;
+typedef fontmap_t::iterator fontmap_iterator_t;
 
 /* this is stored as userdata in the lua_State */
 struct CLuaData
 {
 	CFBWindow *fbwin;
 	CRCInput *rcinput;
+	fontmap_t fontmap;
 };
 
 struct CLuaMenuItem
@@ -200,6 +205,13 @@ public:
 	void runScript(const char *fileName, std::vector<std::string> *argv = NULL, std::string *result_code = NULL, std::string *result_string = NULL, std::string *error_string = NULL);
 	void abortScript();
 
+	enum {
+		DYNFONT_NO_ERROR      = 0,
+		DYNFONT_MAXIMUM_FONTS = 1,
+		DYNFONT_TO_WIDE       = 2,
+		DYNFONT_TOO_HIGH      = 3
+	};
+
 	// Example: runScript(fileName, "Arg1", "Arg2", "Arg3", ..., NULL);
 	//	Type of all parameters: const char*
 	//	The last parameter to NULL is imperative.
@@ -324,6 +336,7 @@ private:
 	static int checkVersion(lua_State *L);
 	static int createChannelIDfromUrl(lua_State *L);
 	static int enableInfoClock(lua_State *L);
+	static int getDynFont(lua_State *L);
 };
 
 #endif /* _LUAINSTANCE_H */