Added image manipulation codes to Meter=BITMAP/BUTTON/HISTOGRAM and refactored them.

For BITMAP/BUTTON:
- Greyscale
- ImageTint
- ImageAlpha
- ColorMatrixN
- ImageFlip
Note: BITMAP and BUTTON are not able to support ImageRotate.

For HISTOGRAM:
- PrimaryGreyscale
- PrimaryImageTint
- PrimaryImageAlpha
- PrimaryColorMatrixN
- PrimaryImageFlip
- PrimaryImageRotate
- Secondary***
- Both***

Library/MeterImage.h

@@ -20,17 +20,13 @@
 #define __METERIMAGE_H__
 
 #include "Meter.h"
+#include "TintedImage.h"
 #include "MeterWindow.h"
 
-namespace Gdiplus 
-{
-	class Bitmap;
-};
-
 class CMeterImage : public CMeter
 {
 public:
-	CMeterImage(CMeterWindow* meterWindow, WCHAR* wName = L"W", WCHAR* hName = L"H");
+	CMeterImage(CMeterWindow* meterWindow);
 	virtual ~CMeterImage();
 
 	virtual void ReadConfig(const WCHAR* section);
@@ -41,34 +37,15 @@ public:
 
 protected:
 	void LoadImage(bool bLoadAlways);
-	bool CompareColorMatrix(const Gdiplus::ColorMatrix& a, const Gdiplus::ColorMatrix& b);
-	void ApplyTint();
-	Gdiplus::Bitmap* TurnGreyscale();
-	void ApplyTransform();
-	
-	const std::wstring m_ImageWidthString;
-	const std::wstring m_ImageHeightString;
 
-	Gdiplus::Bitmap* m_Bitmap;			// The bitmap
-	Gdiplus::Bitmap* m_BitmapTint;		// The bitmap
+	CTintedImage m_Image;
 	std::wstring m_ImageName;			// Name of the image
 	std::wstring m_Path;
+
 	bool m_NeedsReload;
-	bool m_NeedsTinting;
-	bool m_NeedsTransform;
 	bool m_WidthDefined;
 	bool m_HeightDefined;
 	bool m_PreserveAspectRatio;			// If true, aspect ratio of the image is preserved when the image is scaled
-	HGLOBAL m_hBuffer;
-	FILETIME m_Modified;
-
-	bool m_GreyScale;
-	Gdiplus::ColorMatrix m_ColorMatrix;
-	Gdiplus::RotateFlipType m_Flip;
-	Gdiplus::REAL m_Rotate;
-
-	static const Gdiplus::ColorMatrix c_GreyScaleMatrix;
-	static const Gdiplus::ColorMatrix c_IdentifyMatrix;
 };
 
 #endif