improvements to skins

src/framework/graphics/fontmanager.cpp

@@ -38,6 +38,12 @@ void FontManager::terminate()
     m_defaultFont = nullptr;
 }
 
+void FontManager::clearFonts()
+{
+    m_fonts.clear();
+    m_defaultFont = BitmapFontPtr(new BitmapFont("emptyfont"));
+}
+
 bool FontManager::importFont(std::string fontFile)
 {
     try {

src/framework/graphics/fontmanager.h

@@ -31,6 +31,7 @@ public:
     FontManager();
 
     void terminate();
+    void clearFonts();
 
     bool importFont(std::string fontFile);
 

src/framework/graphics/painterogl2.cpp

@@ -120,7 +120,7 @@ void PainterOGL2::drawCoords(CoordsBuffer& coordsBuffer, DrawMode drawMode)
 
 void PainterOGL2::drawTextureCoords(CoordsBuffer& coordsBuffer, const TexturePtr& texture)
 {
-    if(texture->isEmpty())
+    if(texture && texture->isEmpty())
         return;
 
     setDrawProgram(m_shaderProgram ? m_shaderProgram : m_drawTexturedProgram.get());