uiaccelerator_plat/alf_visual_api/inc/alf/alfgc.h
changeset 0 15bf7259bb7c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/uiaccelerator_plat/alf_visual_api/inc/alf/alfgc.h	Tue Feb 02 07:56:43 2010 +0200
@@ -0,0 +1,134 @@
+/*
+* Copyright (c) 2006 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:   Graphics context.
+*
+*/
+
+
+
+#ifndef C_ALFGC_H
+#define C_ALFGC_H
+
+#include <e32base.h>
+#include <gdi.h>
+
+#include <alf/alftimedvalue.h>
+#include <alf/alfrealline.h>
+
+struct TAlfRealLine;
+
+
+class CAlfTexture;
+class CAlfTextStyle;
+
+
+/** Horizontal alignment. */
+enum TAlfAlignHorizontal
+    {
+    EAlfAlignHLeft,
+    EAlfAlignHCenter,
+    EAlfAlignHRight,
+
+    /** Special alignment for localized text. This is converted to left or
+        right alignment internally. */
+    EAlfAlignHLocale,
+
+    /** Special alignment for localized text. This is the mirrored
+        alignment of the normal locale alignment. Converted to left or
+        right alignment internally. */
+    EAlfAlignHLocaleMirrored
+    };
+
+
+/** Vertical alignment. */
+enum TAlfAlignVertical
+    {
+    EAlfAlignVTop,
+    EAlfAlignVCenter,
+    EAlfAlignVBottom
+    };    
+    
+/** Polygon draw mode */
+enum TAlfPolygonDrawMode
+    {
+    ENoFill,
+    EFillNonZero,
+    EFillEvenOdd
+    };
+    
+/**
+ * CAlfGc is a graphics context that is used for storing the state of the
+ * drawing tools. 
+ *
+ */
+NONSHARABLE_CLASS(CAlfGc) : public CBase
+    {
+public:
+
+    /**
+     * Stretch modes.
+     */
+    enum TStretchMode
+        {
+        EStretchNone = 0,   ///< Does not stretch
+        EStretchHorizontal, ///< Fits to horizontal width (left-right)
+        EStretchVertical,   ///< Fits to vertical height
+        EStretchFull		///< Stretches the image to the full area of the visual, disregarding the original aspect ratio.
+
+        };
+
+public:
+    
+    static CAlfGc* NewL();
+    ~CAlfGc();    
+    void ActivateL();
+    HBufC8* CommandBuffer();
+    void Deactivate();
+
+    void DrawImage(const CAlfTexture& aTexture, const TAlfRealRect& aDestinationRect);    
+    void DrawText(const TDesC& aText, const TAlfRealRect& aDestinationRect);    
+	void DrawEllipse(const TAlfRealRect& aDestinationRect);	
+	void DrawLines(const RArray<TReal32> & aLinesPointCords);
+	void DrawPoints(const RArray<TReal32> & aPointsCords); 
+  	void DrawPolygon(const RArray<TReal32> & aPolygonPointCords);
+  	void DrawRects(const RArray<TReal32> & aRectPointCords);
+	
+	// Setters
+    void SetTextStyle(const CAlfTextStyle& aTextStyle);
+	void SetPenColor(const TRgb& aColor);
+	void SetPenWidth(const TReal32& aWidth);
+	void SetOpacity(const TReal32& aOpacity);
+	void SetPolygonDrawMode(TAlfPolygonDrawMode aPolygonDrawMode);
+	void SetTextAlign(TAlfAlignHorizontal aAlignHorizontal, TAlfAlignVertical aAlignVertical);
+
+    // Transformations
+	void LoadIdentity();
+	void Translate(const TReal32& aX, const TReal32& aY, const TReal32& aZ);
+	void Scale(const TReal32& aX, const TReal32& aY, const TReal32& aZ);
+	void Rotate(const TReal32& aAngle, const TReal32& aX, const TReal32& aY, const TReal32& aZ);
+  
+    
+private:
+    CAlfGc();
+    void ConstructL();
+    
+    void AppendCommand( TInt aCommand, const TDesC8& aParams );
+    void AppendCommandL( TInt aCommand, const TDesC8& aParams );
+    
+private:
+    struct TAlfGcData;
+    TAlfGcData* iData;
+    };
+
+#endif