--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/uiaccelerator_plat/alf_core_toolkit_api/inc/uiacceltk/HuiGradientBrush.h Tue Feb 02 07:56:43 2010 +0200
@@ -0,0 +1,171 @@
+/*
+* Copyright (c) 2006-2007 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: Defines CHuiLinearGradientBrush - a Brush that is able to
+* draw linear color gradients.
+*
+*/
+
+
+
+#ifndef __HUIGRADIENTBRUSH_H__
+#define __HUIGRADIENTBRUSH_H__
+
+#include <e32base.h>
+#include <uiacceltk/HuiBrush.h>
+#include <uiacceltk/HuiSkin.h>
+#include <uiacceltk/HuiGc.h>
+#include <uiacceltk/HuiImage.h>
+
+
+/**
+ * Linear gradient brush. Draws a sequence of colors in a linear gradient.
+ */
+NONSHARABLE_CLASS(CHuiGradientBrush) : public CHuiBrush
+ {
+public:
+
+ /** Linear gradient directions. */
+ enum TDirection
+ {
+ EDirectionUp,
+ EDirectionRight,
+ EDirectionDown,
+ EDirectionLeft
+ };
+
+ /* Constructors and destructor. */
+
+ /**
+ * Constructor.
+ */
+ IMPORT_C static CHuiGradientBrush* NewL();
+
+ /**
+ * Constructor. The new brush is left on the cleanup stack.
+ */
+ IMPORT_C static CHuiGradientBrush* NewLC();
+
+ /**
+ * Destructor.
+ */
+ ~CHuiGradientBrush();
+
+
+ /* Methods. */
+
+ /**
+ * Sets the gradient direction.
+ */
+ IMPORT_C void SetDirection(TDirection aDirection);
+
+ /**
+ * Replaces all colors with a single color.
+ *
+ * @param aColor Solid color for the gradient.
+ * @param aOpacity Opacity.
+ */
+ IMPORT_C virtual void SetColor(const TRgb& aColor, TReal32 aOpacity = 1.0) __SOFTFP;
+
+ /**
+ * Sets the image for the gradient. By default, no image is used. The image
+ * can be cleared with <code>SetImage(THuiImage())</code>.
+ *
+ * @param aImage Image to use in the gradient.
+ */
+ IMPORT_C virtual void SetImage(const THuiImage& aImage);
+
+ /**
+ * Returns a color from the gradient.
+ */
+ IMPORT_C virtual TRgb Color(TInt aIndex) const;
+
+ /**
+ * Returns an opacity value from the gradient.
+ */
+ IMPORT_C virtual TReal32 Opacity(TInt aIndex) const __SOFTFP;
+
+ /**
+ * Returns the image of the gradient brush.
+ */
+ IMPORT_C virtual const THuiImage& Image() const;
+
+ /**
+ * Appends a new color for the entire gradient. The caller must
+ * append colors in the correct order, by ascending position.
+ *
+ * @param aPosition Position of the color.
+ * @param aColor Color at the position.
+ * @param aOpacity Opacity at the position.
+ */
+ IMPORT_C virtual void AppendColorL(TReal32 aPosition, const TRgb& aColor,
+ TReal32 aOpacity = 1.0) __SOFTFP;
+
+ /**
+ * Draw the brush.
+ */
+ virtual void Draw(CHuiGc& aGc, const MHuiBrushGuide& aGuide) const;
+
+
+protected:
+
+ /* Constructors. */
+
+ /**
+ * Constructor.
+ */
+ CHuiGradientBrush();
+
+ /**
+ * Second-phase constructor.
+ */
+ void ConstructL();
+
+
+private:
+
+ /* Private data */
+
+ /** One color in the gradient. */
+ struct SColor
+ {
+ /** Position in the range 0..1. */
+ TReal32 iPosition;
+
+ /** RGB color. */
+ TRgb iColor;
+
+ /** Opacity. */
+ TReal32 iOpacity;
+ };
+
+
+private:
+
+ /* Private methods */
+
+
+private:
+
+ /** Direction of a linear gradient. */
+ TDirection iDirection;
+
+ /** Array of gradient colors. */
+ RArray<SColor> iColors;
+
+ /** Image for the gradient. */
+ THuiImage iImage;
+
+ };
+
+#endif // __HUIGRADIENTBRUSH_H__