Applied John L's patches for curson scaling, image resizing

without scaling and the art provider resize bitmap patch.
    I'll look into adapting the generic file dialog to it.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@32598 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/artprov.h

@@ -137,6 +137,10 @@ public:
                           const wxArtClient& client = wxART_OTHER,
                           const wxSize& size = wxDefaultSize);
 
+    // Get the size of an icon from a specific wxArtClient, queries 
+    // the topmost provider if platform_dependent = false
+    static wxSize GetSize(const wxArtClient& client, bool platform_dependent = false);
+
 protected:
     friend class wxArtProviderModule;
     // Initializes default provider
@@ -146,6 +150,12 @@ protected:
     // Destroy caches & all providers
     static void CleanUpProviders();
 
+    // Get the default size of an icon for a specific client
+    virtual wxSize DoGetSize(const wxArtClient& client) 
+    {
+        return GetSize(client, true);
+    }
+                             
     // Derived classes must override this method to create requested
     // art resource. This method is called only once per instance's
     // lifetime for each requested wxArtID.

include/wx/gdicmn.h

@@ -346,6 +346,8 @@ public:
     wxSize GetSize() const { return wxSize(width, height); }
     void SetSize( const wxSize &s ) { width = s.GetWidth(); height = s.GetHeight(); }
 
+    bool IsEmpty() const { return (width <= 0) || (height <= 0); }
+
     wxPoint GetTopLeft() const { return GetPosition(); }
     wxPoint GetLeftTop() const { return GetTopLeft(); }
     void SetTopLeft(const wxPoint &p) { SetPosition(p); }

include/wx/image.h

@@ -178,7 +178,14 @@ public:
     wxImage Copy() const;
 
     // return the new image with size width*height
-    wxImage GetSubImage( const wxRect& ) const;
+    wxImage GetSubImage( const wxRect& rect) const;
+
+    // Paste the image or part of this image into an image of the given size at the pos
+    //  any newly exposed areas will be filled with the rgb colour
+    //  by default if r = g = b = -1 then fill with this image's mask colour or find and 
+    //  set a suitable mask colour
+    wxImage Size( const wxSize& size, const wxPoint& pos, 
+                  int r = -1, int g = -1, int b = -1 ) const;
 
     // pastes image into this instance and takes care of
     // the mask colour and out of bounds problems
@@ -192,6 +199,10 @@ public:
     // rescales the image in place
     wxImage& Rescale( int width, int height ) { return *this = Scale(width, height); }
 
+    // resizes the image in place
+    wxImage& Resize( const wxSize& size, const wxPoint& pos, 
+                     int r = -1, int g = -1, int b = -1 ) { return *this = Size(size, pos, r, g, b); }
+
     // Rotates the image about the given point, 'angle' radians.
     // Returns the rotated image, leaving this image intact.
     wxImage Rotate(double angle, const wxPoint & centre_of_rotation,
@@ -210,6 +221,7 @@ public:
 
     // these routines are slow but safe
     void SetRGB( int x, int y, unsigned char r, unsigned char g, unsigned char b );
+    void SetRGB( const wxRect& rect, unsigned char r, unsigned char g, unsigned char b );
     unsigned char GetRed( int x, int y ) const;
     unsigned char GetGreen( int x, int y ) const;
     unsigned char GetBlue( int x, int y ) const;
@@ -280,6 +292,9 @@ public:
 
     // Mask functions
     void SetMaskColour( unsigned char r, unsigned char g, unsigned char b );
+    // Get the current mask colour or find a suitable colour
+    // returns true if using current mask colour
+    bool GetOrFindMaskColour( unsigned char *r, unsigned char *g, unsigned char *b ) const;
     unsigned char GetMaskRed() const;
     unsigned char GetMaskGreen() const;
     unsigned char GetMaskBlue() const;