avoid infinite recursion for richtooltops, (hopefully) fixes #15070

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

diff --git a/interface/wx/image.h b/interface/wx/image.h
index 8f19e19969400f87cf4bee1fff579ebcec791376..1a2ae82c79a5ab1580398ad9936c13e5120c2838 100644 (file)
--- a/interface/wx/image.h
+++ b/interface/wx/image.h
@@ -335,6 +335,24 @@ public:
         @since 2.9.2
      */
      static wxVersionInfo GetLibraryVersionInfo();
         @since 2.9.2
      */
      static wxVersionInfo GetLibraryVersionInfo();

+
+protected:
+    /**
+       Called to get the number of images available in a multi-image file
+       type, if supported.
+       
+       NOTE: this function is allowed to change the current stream position
+             since GetImageCount() will take care of restoring it later
+    */
+    virtual int DoGetImageCount( wxInputStream& stream );
+
+    /**
+       Called to test if this handler can read an image from the given stream.
+       
+       NOTE: this function is allowed to change the current stream position
+             since CallDoCanRead() will take care of restoring it later
+    */
+    virtual bool DoCanRead( wxInputStream& stream ) = 0;

 };
 
 
 };
 
 


@@ -350,6 +368,9 @@ const unsigned char wxIMAGE_ALPHA_TRANSPARENT = 0;
 */
 const unsigned char wxIMAGE_ALPHA_OPAQUE = 0xff;
 
 */
 const unsigned char wxIMAGE_ALPHA_OPAQUE = 0xff;
 

+const unsigned char wxIMAGE_ALPHA_THRESHOLD = 0x80;
+
+

 /**
     @class wxImage
 
 /**
     @class wxImage
 


@@ -1074,7 +1095,7 @@ public:
         This is most often used when doing direct image manipulation.
         The return value points to an array of characters in RGBRGBRGB... format
         in the top-to-bottom, left-to-right order, that is the first RGB triplet
         This is most often used when doing direct image manipulation.
         The return value points to an array of characters in RGBRGBRGB... format
         in the top-to-bottom, left-to-right order, that is the first RGB triplet

-        corresponds to the pixel first pixel of the first row, the second one ---
+        corresponds to the first pixel of the first row, the second one ---

         to the second pixel of the first row and so on until the end of the first
         row, with second row following after it and so on.
 
         to the second pixel of the first row and so on until the end of the first
         row, with second row following after it and so on.
 


@@ -1335,7 +1356,7 @@ public:
     bool IsOk() const;
 
     /**
     bool IsOk() const;
 
     /**

-        Returns @true if the given pixel is transparent, i.e. either has the mask
+        Returns @true if the given pixel is transparent, i.e.\ either has the mask

         colour if this image has a mask or if this image has alpha channel and alpha
         value of this pixel is strictly less than @a threshold.
     */
         colour if this image has a mask or if this image has alpha channel and alpha
         value of this pixel is strictly less than @a threshold.
     */