* Style is now responsible for generating and caching

the gradient color array, it observs the gradient for
  this purpose
* introduced IconObject class that combines Observable,
  Referenceable and Selectable interfaces and adds an
  interface for retrieving a PropertyObject that represents
  the object in question
* Shape and Style inherit from IconObject now


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18037 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/apps/icon-o-matic/Jamfile

@@ -41,6 +41,7 @@ Application Icon-O-Matic :
 	# document
 	Document.cpp
 	Icon.cpp
+	IconObject.cpp
 	IconRenderer.cpp
 	# generic/command
 	Command.cpp
@@ -110,8 +111,6 @@ Application Icon-O-Matic :
 	ShapeListView.cpp
 	SwatchGroup.cpp
 	TransformerListView.cpp
-	# gradient
-	Gradient.cpp
 	# shape
 	PathContainer.cpp
 	PathManipulator.cpp
@@ -127,6 +126,7 @@ Application Icon-O-Matic :
 	RemovePointsCommand.cpp
 	RemoveShapesCommand.cpp
 	# style
+	Gradient.cpp
 	Style.cpp
 	StyleManager.cpp
 	# transformer

src/apps/icon-o-matic/document/IconObject.cpp

@@ -0,0 +1,47 @@
+/*
+ * Copyright 2006, Haiku.
+ * Distributed under the terms of the MIT License.
+ *
+ * Authors:
+ *		Stephan Aßmus <superstippi@gmx.de>
+ */
+
+#include "IconObject.h"
+
+// constructor
+IconObject::IconObject()
+	: Observable(),
+	  Referenceable(),
+	  Selectable()
+{
+}
+
+// destructor
+IconObject::~IconObject()
+{
+}
+
+// SelectedChanged
+void
+IconObject::SelectedChanged()
+{
+	// simply pass on the event for now
+	Notify();
+}
+
+// #pragma mark -
+
+// MakePropertyObject
+PropertyObject*
+IconObject::MakePropertyObject() const
+{
+	return NULL;
+}
+
+// SetToPropertyObject
+bool
+IconObject::SetToPropertyObject(const PropertyObject* object)
+{
+	return false;
+}
+

src/apps/icon-o-matic/document/IconObject.h

@@ -0,0 +1,36 @@
+/*
+ * Copyright 2006, Haiku.
+ * Distributed under the terms of the MIT License.
+ *
+ * Authors:
+ *		Stephan Aßmus <superstippi@gmx.de>
+ */
+
+#ifndef ICON_OBJECT_H
+#define ICON_OBJECT_H
+
+#include "Observable.h"
+#include "Referenceable.h"
+#include "Selectable.h"
+
+class PropertyObject;
+
+class IconObject : public Observable,
+				   public Referenceable,
+				   public Selectable {
+ public:
+								IconObject();
+	virtual						~IconObject();
+
+	// Selectable interface
+	virtual	void				SelectedChanged();
+
+	// IconObject
+	virtual	PropertyObject*		MakePropertyObject() const;
+	virtual	bool				SetToPropertyObject(
+									const PropertyObject* object);
+
+ private:
+};
+
+#endif // ICON_OBJECT_H

src/apps/icon-o-matic/document/IconRenderer.cpp

@@ -99,11 +99,7 @@ StyleHandler::generate_span(agg::rgba8* span, int x, int y,
 	}
 
 	Gradient* gradient = style->Gradient();		
-
-	// TODO: move filling of color array elsewhere and cache result
-	// maybe in Style?
-	agg::rgba8 colors[256];
-	gradient->MakeGradient((uint32*)colors, 256);
+	const agg::rgba8* colors = style->Colors();
 
 	agg::trans_affine transformation;
 		// TODO: construct the gradient transformation here

src/apps/icon-o-matic/shape/Shape.cpp

@@ -25,12 +25,12 @@ ShapeListener::~ShapeListener()
 
 // constructor
 Shape::Shape(::Style* style)
-	: Observable(),
-	  Referenceable(),
+	: IconObject(),
+	  Observer(),
 	  PathContainerListener(),
 
 	  fPaths(new (nothrow) PathContainer(false)),
-	  fStyle(style),
+	  fStyle(NULL),
 
 	  fPathSource(fPaths),
 	  fTransformers(4),
@@ -42,18 +42,17 @@ Shape::Shape(::Style* style)
 	if (fPaths)
 		fPaths->AddListener(this);
 
-	if (fStyle)
-		fStyle->Acquire();
+	SetStyle(style);
 }
 
 // constructor
 Shape::Shape(const Shape& other)
-	: Observable(),
-	  Referenceable(),
+	: IconObject(),
+	  Observer(),
 	  PathContainerListener(),
 
 	  fPaths(new (nothrow) PathContainer(false)),
-	  fStyle(other.fStyle),
+	  fStyle(NULL),
 
 	  fPathSource(fPaths),
 	  fTransformers(4),
@@ -76,8 +75,7 @@ Shape::Shape(const Shape& other)
 	}
 	// TODO: clone vertex transformers
 
-	if (fStyle)
-		fStyle->Acquire();
+	SetStyle(other.fStyle);
 }
 
 // destructor
@@ -91,10 +89,23 @@ Shape::~Shape()
 	fPaths->RemoveListener(this);
 	delete fPaths;
 
-	if (fStyle)
-		fStyle->Release();
+	SetStyle(NULL);
 }
 
+// #pragma mark -
+
+// ObjectChanged
+void
+Shape::ObjectChanged(const Observable* object)
+{
+	// simply pass on the event for now
+	// (a path or the style changed,
+	// the shape needs to be re-rendered)
+	Notify();
+}
+
+// #pragma mark -
+
 // PathAdded
 void
 Shape::PathAdded(VectorPath* path)
@@ -115,26 +126,6 @@ Shape::PathRemoved(VectorPath* path)
 
 // #pragma mark -
 
-// ObjectChanged
-void
-Shape::ObjectChanged(const Observable* object)
-{
-	// simply pass on the event for now
-	Notify();
-}
-
-// #pragma mark -
-
-// SelectedChanged
-void
-Shape::SelectedChanged()
-{
-	// simply pass on the event for now
-	Notify();
-}
-
-// #pragma mark -
-
 // InitCheck
 status_t
 Shape::InitCheck() const
@@ -149,13 +140,17 @@ Shape::SetStyle(::Style* style)
 	if (fStyle == style)
 		return;
 
-	if (fStyle)
+	if (fStyle) {
+		fStyle->RemoveObserver(this);
 		fStyle->Release();
+	}
 
 	fStyle = style;
 
-	if (fStyle)
+	if (fStyle) {
 		fStyle->Acquire();
+		fStyle->AddObserver(this);
+	}
 
 	Notify();
 }

src/apps/icon-o-matic/shape/Shape.h

@@ -5,12 +5,10 @@
 #include <Rect.h>
 #include <String.h>
 
-#include "Observable.h"
+#include "IconObject.h"
 #include "Observer.h"
 #include "PathContainer.h"
 #include "PathSource.h"
-#include "Referenceable.h"
-#include "Selectable.h"
 
 class Style;
 
@@ -25,25 +23,20 @@ class ShapeListener {
 	virtual	void				TransformerRemoved(Transformer* t) = 0;
 };
 
-class Shape : public Observable,
-			  public Observer,	// observing all the paths
-			  public Referenceable,
-			  public Selectable,
+class Shape : public IconObject,
+			  public Observer,	// observing all the paths and the style
 			  public PathContainerListener {
  public:
 								Shape(::Style* style);
 								Shape(const Shape& other);
 	virtual						~Shape();
 
-	// PathContainerListener interface
-	virtual	void				PathAdded(VectorPath* path);
-	virtual	void				PathRemoved(VectorPath* path);
-
 	// Observer interface
 	virtual	void				ObjectChanged(const Observable* object);
 
-	// Selectable interface
-	virtual	void				SelectedChanged();
+	// PathContainerListener interface
+	virtual	void				PathAdded(VectorPath* path);
+	virtual	void				PathRemoved(VectorPath* path);
 
 	// Shape
 			status_t			InitCheck() const;

src/apps/icon-o-matic/style/Style.cpp

@@ -12,29 +12,63 @@
 
 // constructor
 Style::Style()
-	: Referenceable(),
+	: IconObject(),
+	  Observer(),
+
 	  fColor(),
-	  fGradient(NULL)
+	  fGradient(NULL),
+	  fColors(NULL)
 {
 }
 
 // destructor
 Style::~Style()
 {
-	delete fGradient;
+	SetGradient(NULL);
 }
 
+// ObjectChanged
+void
+Style::ObjectChanged(const Observable* object)
+{
+	if (object == fGradient && fColors) {
+		fGradient->MakeGradient((uint32*)fColors, 256);
+		Notify();
+	}
+}
+
+// #pragma mark -
+
 // SetColor
 void
 Style::SetColor(const rgb_color& color)
 {
+	if ((uint32&)fColor == (uint32&)color)
+		return;
+
 	fColor = color;
+	Notify();
 }
 
 // SetGradient
 void
 Style::SetGradient(::Gradient* gradient)
 {
-	delete fGradient;
+	if (fGradient) {
+		fGradient->RemoveObserver(this);
+		delete fGradient;
+	}
+
 	fGradient = gradient;
+
+	if (fGradient) {
+		fGradient->AddObserver(this);
+		// generate gradient
+		if (!fColors)
+			fColors = new agg::rgba8[256];
+		fGradient->MakeGradient((uint32*)fColors, 256);
+	} else {
+		delete[] fColors;
+		fColors = NULL;
+	}
 }

src/apps/icon-o-matic/style/Style.h

@@ -11,15 +11,24 @@
 
 #include <GraphicsDefs.h>
 
-#include "Referenceable.h"
+#include <agg_color_rgba.h>
+
+#include "IconObject.h"
+#include "Observer.h"
 
 class Gradient;
 
-class Style : public Referenceable {
+class Style : public IconObject,
+			  public Observer {
  public:
 								Style();
 	virtual						~Style();
 
+
+	// Observer interface
+	virtual	void				ObjectChanged(const Observable* object);
+
+	// Style
 			void				SetColor(const rgb_color& color);
 	inline	rgb_color			Color() const
 									{ return fColor; }
@@ -28,9 +37,15 @@ class Style : public Referenceable {
 			::Gradient*			Gradient() const
 									{ return fGradient; }
 
+			const agg::rgba8*	Colors() const
+									{ return fColors; }
+
  private:
 			rgb_color			fColor;
 			::Gradient*			fGradient;
+
+			// hold gradient color array
+			agg::rgba8*			fColors;
 };
 
 #endif // STYLE_H