Change filter mode in TextLabel to improve quality while scaling

[platform/core/uifw/dali-toolkit.git] / dali-toolkit / internal / visuals / visual-base-impl.h

diff --git a/dali-toolkit/internal/visuals/visual-base-impl.h b/dali-toolkit/internal/visuals/visual-base-impl.h
index e7d8ddd..d580d8f 100644 (file)
--- a/dali-toolkit/internal/visuals/visual-base-impl.h
+++ b/dali-toolkit/internal/visuals/visual-base-impl.h
@@ -2,7 +2,7 @@
 #define DALI_TOOLKIT_INTERNAL_VISUAL_H
 
 /*
- * Copyright (c) 2016 Samsung Electronics Co., Ltd.
+ * Copyright (c) 2017 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -44,6 +44,8 @@ namespace Internal
 namespace Visual
 {
 
+class ResourceObserver;
+
 /**
  * Base class for all Control rendering logic. A control may have multiple visuals.
  *
@@ -107,12 +109,12 @@ public:
   /**
    * @copydoc Toolkit::Visual::Base::SetDepthIndex
    */
-  void SetDepthIndex( float index );
+  void SetDepthIndex( int index );
 
   /**
    * @copydoc Toolkit::Visual::Base::GetDepthIndex
    */
-  float GetDepthIndex() const;
+  int GetDepthIndex() const;
 
   /**
    * @copydoc Toolkit::Visual::Base::SetOnStage
@@ -131,6 +133,16 @@ public:
   void CreatePropertyMap( Property::Map& map ) const;
 
   /**
+   * @brief Create a property map containing per-instance visual properties.
+   *
+   * This will enable creation of new visuals on control state change with
+   * any alternative style properties and the relevant instance properties
+   * (e.g. for image visual, the desired size, and for text visual, the actual text).
+   * @param[in] map The property map into which to write
+   */
+  void CreateInstancePropertyMap( Property::Map& map ) const;
+
+  /**
    * @brief Set whether the Pre-multiplied Alpha Blending is required
    *
    * @param[in] preMultipled whether alpha is pre-multiplied.
@@ -198,6 +210,29 @@ public:
   void AnimateProperty( Dali::Animation& transition,
                         Internal::TransitionData::Animator& animator );
 
+  /**
+   * @brief Add an observer to watch for when the Visuals resources are loaded.
+   * Currently only supports a single observer
+   *
+   */
+  void AddResourceObserver( Visual::ResourceObserver& observer );
+
+  /**
+   * @brief Remove an observer
+   */
+  void RemoveResourceObserver( Visual::ResourceObserver& observer );
+
+  /**
+   * @brief Called when the visuals resources are loaded / ready
+   */
+  void ResourceReady();
+
+  /**
+   * @brief Called when the visuals resources are loaded / ready
+   * @return true if ready, false otherwise
+   */
+  bool IsResourceReady() const;
+
 protected:
 
   /**
@@ -222,6 +257,15 @@ protected:
   virtual void DoCreatePropertyMap( Property::Map& map ) const = 0;
 
   /**
+   * @brief Called by CreateInstancePropertyMap() allowing derived
+   * classes to store instanced data (separate to styled data) that
+   * needs copying between visuals on state change.
+   *
+   * @param[out] map The visual property map
+   */
+  virtual void DoCreateInstancePropertyMap( Property::Map& map ) const = 0;
+
+  /**
    * @brief Called by SetProperties() allowing sub classes to set their properties
    *
    * @param[in] propertyMap The properties for the requested Visual object.
@@ -259,13 +303,6 @@ protected:
    */
   bool IsOnStage() const;
 
-  /**
-   * @brief Gets whether the Dali::Renderer is from a shared cache (and therefore any modifications will affect other users of that renderer)
-   *
-   * @return Returns true if the renderer is from shared cache, false otherwise
-   */
-  bool IsFromCache() const;
-
 private:
 
   /**