Added: Allow to set UI scale with /setuiscale command

--HG--
branch : experimental-ui-scaling

code/ryzom/client/data/gamedev/interfaces_v3/commands.xml

@@ -122,6 +122,8 @@
 
 	<command name="loot" action="inv_temp_all" params="" />
 
+	<command name="setuiscale" action="set_ui_scale" params="scale=$"/>
+
 	<!-- WebIG -->
 	<command name="go" action="browse" params="name=ui:interface:webig:content:html|url=home"/>
 	<command name="webdev" action="browse" params="name=ui:interface:webig:content:html|url=http://localhost/index.html"/>

code/ryzom/client/src/client_cfg.cpp

@@ -839,8 +839,7 @@ void CClientConfig::setValues()
 	READ_FLOAT_FV(Gamma)
 	// UI scaling
 	READ_FLOAT_FV(InterfaceScale);
-	// 50% smaller / 2x bigger
-	clamp(ClientCfg.InterfaceScale, 0.5f, 2.0f);
+	clamp(ClientCfg.InterfaceScale, MIN_INTERFACE_SCALE, MAX_INTERFACE_SCALE);
 	READ_BOOL_FV(BilinearUI);
 	// 3D Driver
 	varPtr = ClientCfg.ConfigFile.getVarPtr ("Driver3D");

code/ryzom/client/src/client_cfg.h

@@ -46,6 +46,9 @@ using NLMISC::CVector;
 using NLMISC::CRGBA;
 using std::string;
 
+// limits for UI scale
+const float MIN_INTERFACE_SCALE = 0.8;
+const float MAX_INTERFACE_SCALE = 2.0;
 
 //---------------------------------------------------
 // CClientConfig :

code/ryzom/client/src/interface_v3/action_handler_game.cpp

@@ -3732,6 +3732,34 @@ class CHandlerGameConfigChangeScreenRatioCustom : public IActionHandler
 };
 REGISTER_ACTION_HANDLER (CHandlerGameConfigChangeScreenRatioCustom, "game_config_change_screen_ratio_custom");
 
+// ***************************************************************************
+class CHandlerSetInterfaceScale : public IActionHandler
+{
+	virtual void execute (CCtrlBase *pCaller, const string &Params)
+	{
+		std::string s;
+		s = getParam(Params, "scale");
+		if (!s.empty()) {
+			float scale;
+			if (fromString(s, scale))
+			{
+				if (scale >= MIN_INTERFACE_SCALE && scale <= MAX_INTERFACE_SCALE)
+				{
+					ClientCfg.InterfaceScale = scale;
+					ClientCfg.writeDouble("InterfaceScale", ClientCfg.InterfaceScale);
+
+					ClientCfg.IsInvalidated = true;
+					return;
+				}
+			}
+		}
+
+		ucstring help("/setuiscale "+toString("%.1f .. %.1f", MIN_INTERFACE_SCALE, MAX_INTERFACE_SCALE));
+		CInterfaceManager::getInstance()->displaySystemInfo(help);
+	}
+};
+REGISTER_ACTION_HANDLER (CHandlerSetInterfaceScale, "set_ui_scale");
+
 
 // ***************************************************************************
 class CHandlerGameMissionAbandon : public IActionHandler

code/ryzom/client/src/interface_v3/interface_manager.cpp

@@ -2038,8 +2038,7 @@ void CInterfaceManager::drawViews(NL3D::UCamera camera)
 		_CurrentPlayerCharac[i] = node ? node->getValue32() : 0;
 	}
 
-	// update value change from ingame config window
-	// must update it here, right before widget manager checks it
+	// scale must be updated right before widget manager checks it
 	if (_InterfaceScaleChanged)
 	{
 		CViewRenderer::getInstance()->setInterfaceScale(_InterfaceScale);
@@ -2916,7 +2915,6 @@ NLMISC_COMMAND(loadui, "Load an interface file", "<loadui [all]/interface.xml>")
 	return result;
 }
 
-
 // ***************************************************************************
 void CInterfaceManager::displayWebWindow(const string & name, const string & url)
 {