added the possibility to rescale the image during loading, especially useful with...

[wxWidgets.git] / src / common / gifdecod.cpp

diff --git a/src/common/gifdecod.cpp b/src/common/gifdecod.cpp
index fda902a8f693c30259d7f0d70053ed51609681ce..9d8cc1dd71d9a7a1a8bf94ff5c56f9a917b81407 100644 (file)
--- a/src/common/gifdecod.cpp
+++ b/src/common/gifdecod.cpp
@@ -122,6 +122,7 @@ bool wxGIFDecoder::ConvertToImage(unsigned int frame, wxImage *image) const
     // create the image
     wxSize sz = GetFrameSize(frame);
     image->Create(sz.GetWidth(), sz.GetHeight());
     // create the image
     wxSize sz = GetFrameSize(frame);
     image->Create(sz.GetWidth(), sz.GetHeight());

+    image->SetType(wxBITMAP_TYPE_GIF);

 
     if (!image->Ok())
         return false;
 
     if (!image->Ok())
         return false;


@@ -190,7 +191,7 @@ bool wxGIFDecoder::ConvertToImage(unsigned int frame, wxImage *image) const
 
 // Get data for current frame
 
 
 // Get data for current frame
 

-wxSize wxGIFDecoder::GetFrameSize(unsigned int frame) const 
+wxSize wxGIFDecoder::GetFrameSize(unsigned int frame) const

 {
     return wxSize(GetFrame(frame)->w, GetFrame(frame)->h);
 }
 {
     return wxSize(GetFrame(frame)->w, GetFrame(frame)->h);
 }


@@ -597,7 +598,7 @@ bool wxGIFDecoder::CanRead(wxInputStream &stream) const
 wxGIFErrorCode wxGIFDecoder::LoadGIF(wxInputStream& stream)
 {
     unsigned int  global_ncolors = 0;
 wxGIFErrorCode wxGIFDecoder::LoadGIF(wxInputStream& stream)
 {
     unsigned int  global_ncolors = 0;

-    int           bits, interl, transparent, i;
+    int           bits, interl, i;

     wxAnimationDisposal disposal;
     long          size;
     long          delay;
     wxAnimationDisposal disposal;
     long          size;
     long          delay;


@@ -659,7 +660,7 @@ wxGIFErrorCode wxGIFDecoder::LoadGIF(wxInputStream& stream)
     }
 
     // transparent colour, disposal method and delay default to unused
     }
 
     // transparent colour, disposal method and delay default to unused

-    transparent = -1;
+    int transparent = -1;

     disposal = wxANIM_UNSPECIFIED;
     delay = -1;
 
     disposal = wxANIM_UNSPECIFIED;
     delay = -1;
 


@@ -709,8 +710,7 @@ wxGIFErrorCode wxGIFDecoder::LoadGIF(wxInputStream& stream)
                 delay = 10 * (buf[2] + 256 * buf[3]);
 
                 // read transparent colour index, if used
                 delay = 10 * (buf[2] + 256 * buf[3]);
 
                 // read transparent colour index, if used

-                if (buf[1] & 0x01)
-                    transparent = buf[4];
+                transparent = buf[1] & 0x01 ? buf[4] : -1;

 
                 // read disposal method
                 disposal = (wxAnimationDisposal)(((buf[1] & 0x1C) >> 2) - 1);
 
                 // read disposal method
                 disposal = (wxAnimationDisposal)(((buf[1] & 0x1C) >> 2) - 1);


@@ -756,8 +756,8 @@ wxGIFErrorCode wxGIFDecoder::LoadGIF(wxInputStream& stream)
             pimg->w = buf[4] + 256 * buf[5];
             pimg->h = buf[6] + 256 * buf[7];
 
             pimg->w = buf[4] + 256 * buf[5];
             pimg->h = buf[6] + 256 * buf[7];
 

-            if ( anim && ((pimg->w == 0) || (pimg->w > (unsigned int)m_szAnimation.GetWidth()) || 
-                            (pimg->h == 0) || (pimg->h > (unsigned int)m_szAnimation.GetHeight())) )
+            if ( anim && ((pimg->w == 0) || (pimg->w > (unsigned int)m_szAnimation.GetWidth()) ||
+                  (pimg->h == 0) || (pimg->h > (unsigned int)m_szAnimation.GetHeight())) )

                 return wxGIF_INVFORMAT;
 
             interl = ((buf[8] & 0x40)? 1 : 0);
                 return wxGIF_INVFORMAT;
 
             interl = ((buf[8] & 0x40)? 1 : 0);