Improvements in textedit and hotkey manager

* Set textedit's cursor position to the end of text in some situations
* Send hotkey messages to the current channel instead of default channel
* Allow to overwrite sprites using otml and pngs

src/framework/graphics/texturemanager.h

@@ -33,6 +33,7 @@ public:
     void poll();
 
     void clearTexturesCache();
+    void preload(const std::string& fileName) { getTexture(fileName); }
     TexturePtr getTexture(const std::string& fileName);
     const TexturePtr& getEmptyTexture() { return m_emptyTexture; }
 

src/framework/luafunctions.cpp

@@ -294,6 +294,7 @@ void Application::registerLuaFunctions()
 
     // Textures
     g_lua.registerSingletonClass("g_textures");
+    g_lua.bindSingletonFunction("g_textures", "preload", &TextureManager::preload, &g_textures);
     g_lua.bindSingletonFunction("g_textures", "clearTexturesCache", &TextureManager::clearTexturesCache, &g_textures);
 
     // UI

src/framework/ui/uitextedit.cpp

@@ -327,6 +327,9 @@ void UITextEdit::update(bool focusCursor)
 
 void UITextEdit::setCursorPos(int pos)
 {
+    if(pos < 0)
+        pos = m_text.length();
+
     if(pos != m_cursorPos) {
         if(pos < 0)
             m_cursorPos = 0;