Further performance optimizations

[wxWidgets.git] / include / wx / image.h

diff --git a/include/wx/image.h b/include/wx/image.h
index 40418fdc5fd95a77ed53c019acea843d3280f711..eb536ca793382e12e81e2429b74f3587b0871d76 100644 (file)
--- a/include/wx/image.h
+++ b/include/wx/image.h
@@ -37,9 +37,17 @@
 #define wxIMAGE_OPTION_RESOLUTIONUNIT        wxString(_T("ResolutionUnit"))
 
 // constants used with wxIMAGE_OPTION_RESOLUTIONUNIT
-enum
+//
+// NB: don't change these values, they correspond to libjpeg constants
+enum wxImageResolution
 {
+    // Resolution not specified
+    wxIMAGE_RESOLUTION_NONE = 0,
+
+    // Resolution specified in inches
     wxIMAGE_RESOLUTION_INCHES = 1,
+
+    // Resolution specified in centimeters
     wxIMAGE_RESOLUTION_CM = 2
 };
 
@@ -61,9 +69,9 @@ const unsigned char wxIMAGE_ALPHA_OPAQUE = 0xff;
 // classes
 //-----------------------------------------------------------------------------
 
-class WXDLLEXPORT wxImageHandler;
-class WXDLLEXPORT wxImage;
-class WXDLLEXPORT wxPalette;
+class WXDLLIMPEXP_FWD_CORE wxImageHandler;
+class WXDLLIMPEXP_FWD_CORE wxImage;
+class WXDLLIMPEXP_FWD_CORE wxPalette;
 
 //-----------------------------------------------------------------------------
 // wxVariant support
@@ -71,14 +79,14 @@ class WXDLLEXPORT wxPalette;
 
 #if wxUSE_VARIANT
 #include "wx/variant.h"
-DECLARE_VARIANT_OBJECT_EXPORTED(wxImage,WXDLLEXPORT)
+DECLARE_VARIANT_OBJECT_EXPORTED(wxImage,WXDLLIMPEXP_CORE)
 #endif
 
 //-----------------------------------------------------------------------------
 // wxImageHandler
 //-----------------------------------------------------------------------------
 
-class WXDLLEXPORT wxImageHandler: public wxObject
+class WXDLLIMPEXP_CORE wxImageHandler: public wxObject
 {
 public:
     wxImageHandler()
@@ -112,6 +120,13 @@ protected:
     bool CallDoCanRead(wxInputStream& stream);
 #endif // wxUSE_STREAMS
 
+    // helper for the derived classes SaveFile() implementations: returns the
+    // values of x- and y-resolution options specified as the image options if
+    // any
+    static wxImageResolution
+    GetResolutionFromOptions(const wxImage& image, int *x, int *y);
+
+
     wxString  m_name;
     wxString  m_extension;
     wxString  m_mime;
@@ -125,7 +140,7 @@ private:
 // wxImageHistogram
 //-----------------------------------------------------------------------------
 
-class WXDLLEXPORT wxImageHistogramEntry
+class WXDLLIMPEXP_CORE wxImageHistogramEntry
 {
 public:
     wxImageHistogramEntry() { index = value = 0; }
@@ -137,7 +152,7 @@ WX_DECLARE_EXPORTED_HASH_MAP(unsigned long, wxImageHistogramEntry,
                              wxIntegerHash, wxIntegerEqual,
                              wxImageHistogramBase);
 
-class WXDLLEXPORT wxImageHistogram : public wxImageHistogramBase
+class WXDLLIMPEXP_CORE wxImageHistogram : public wxImageHistogramBase
 {
 public:
     wxImageHistogram() : wxImageHistogramBase(256) { }
@@ -167,7 +182,7 @@ public:
 // wxImage
 //-----------------------------------------------------------------------------
 
-class WXDLLEXPORT wxImage: public wxObject
+class WXDLLIMPEXP_CORE wxImage: public wxObject
 {
 public:
     // red, green and blue are 8 bit unsigned integers in the range of 0..255
@@ -210,6 +225,11 @@ public:
     bool Create( int width, int height, unsigned char* data, bool static_data = false );
     bool Create( int width, int height, unsigned char* data, unsigned char* alpha, bool static_data = false );
     bool Create( const char* const* xpmData );
+#ifdef __BORLANDC__
+    // needed for Borland 5.5
+    wxImage( char** xpmData ) { Create(wx_const_cast(const char* const*, xpmData)); }
+    bool Create( char** xpmData ) { return Create(wx_const_cast(const char* const*, xpmData)); }
+#endif
     void Destroy();
 
     // creates an identical copy of the image (the = operator
@@ -238,9 +258,9 @@ public:
     wxImage ResampleBicubic(int width, int height) const;
 
     // blur the image according to the specified pixel radius
-    wxImage Blur(int radius);
-    wxImage BlurHorizontal(int radius);
-    wxImage BlurVertical(int radius);
+    wxImage Blur(int radius) const;
+    wxImage BlurHorizontal(int radius) const;
+    wxImage BlurVertical(int radius) const;
 
     wxImage ShrinkBy( int xFactor , int yFactor ) const ;
 
@@ -387,11 +407,6 @@ public:
     // -1.0..1.0 where -1.0 is -360 degrees and 1.0 is 360 degrees
     void RotateHue(double angle);
 
-    bool operator == (const wxImage& image) const
-        { return m_refData == image.m_refData; }
-    bool operator != (const wxImage& image) const
-        { return m_refData != image.m_refData; }
-
     static wxList& GetHandlers() { return sm_handlers; }
     static void AddHandler( wxImageHandler *handler );
     static void InsertHandler( wxImageHandler *handler );
@@ -423,15 +438,15 @@ protected:
     virtual wxObjectRefData* CloneRefData(const wxObjectRefData* data) const;
 
 private:
-    friend class WXDLLEXPORT wxImageHandler;
+    friend class WXDLLIMPEXP_FWD_CORE wxImageHandler;
 
     DECLARE_DYNAMIC_CLASS(wxImage)
 };
 
 
-extern void WXDLLEXPORT wxInitAllImageHandlers();
+extern void WXDLLIMPEXP_CORE wxInitAllImageHandlers();
 
-extern WXDLLEXPORT_DATA(wxImage)    wxNullImage;
+extern WXDLLIMPEXP_DATA_CORE(wxImage)    wxNullImage;
 
 //-----------------------------------------------------------------------------
 // wxImage handlers