Texture: Notify observers of a DimensionsChange

skyjake · Mar 21, 2013 · 449f5a4 · 449f5a4
1 parent dd6cf00
commit 449f5a4
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Showing 2 changed files with 27 additions and 3 deletions.
diff --git a/doomsday/client/include/resource/texture.h b/doomsday/client/include/resource/texture.h
@@ -54,6 +54,7 @@ class Texture
 
 public:
     DENG2_DEFINE_AUDIENCE(Deletion, void textureBeingDeleted(Texture const &texture))
+    DENG2_DEFINE_AUDIENCE(DimensionsChange, void textureDimensionsChanged(Texture const &texture))
 
     /**
      * Classification/processing flags.
@@ -263,13 +264,27 @@ class Texture
      */
     String description() const;
 
-    /// Returns the dimensions of the texture in map coordinate space units.
+    /**
+     * Returns the world dimensions of the texture, in map coordinate space
+     * units. The DimensionsChange audience is notified whenever dimensions
+     * are changed.
+     */
     Vector2i const &dimensions() const;
 
-    /// Returns the world width of the texture in map coordinate space units.
+    /**
+     * Convenient accessor method for returning the X axis size (width) of
+     * the world dimensions for the texture, in map coordinate space units.
+     *
+     * @see dimensions()
+     */
     inline int width() const { return dimensions().x; }
 
-    /// Returns the world height of the texture in map coordinate space units.
+    /**
+     * Convenient accessor method for returning the X axis size (height) of
+     * the world dimensions for the texture, in map coordinate space units.
+     *
+     * @see dimensions()
+     */
     inline int height() const { return dimensions().y; }
 
     /**

diff --git a/doomsday/client/src/resource/texture.cpp b/doomsday/client/src/resource/texture.cpp
@@ -72,6 +72,12 @@ DENG2_PIMPL(Texture)
         self.clearVariants();
 #endif
     }
+
+    /// Notify iterested parties of a change in world dimensions.
+    void notifyDimensionsChanged()
+    {
+        DENG2_FOR_PUBLIC_AUDIENCE(DimensionsChange, i) i->textureDimensionsChanged(self);
+    }
 };
 
 Texture::Texture(TextureManifest &manifest) : d(new Instance(this, manifest))
@@ -131,6 +137,7 @@ void Texture::setDimensions(Vector2i const &_newDimensions)
     if(d->dimensions != newDimensions)
     {
         d->dimensions = newDimensions;
+        d->notifyDimensionsChanged();
     }
 }
 
@@ -139,6 +146,7 @@ void Texture::setWidth(int newWidth)
     if(d->dimensions.x != newWidth)
     {
         d->dimensions.x = newWidth;
+        d->notifyDimensionsChanged();
     }
 }
 
@@ -147,6 +155,7 @@ void Texture::setHeight(int newHeight)
     if(d->dimensions.y != newHeight)
     {
         d->dimensions.y = newHeight;
+        d->notifyDimensionsChanged();
     }
 }