Added logic, API and docs for wxDataViewModel::HasDefaultCompare indicating a compare...

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

diff --git a/src/common/image.cpp b/src/common/image.cpp
index 7abe5f9860111b5623cc2f1f66760c11f91eb8c6..92bbdde513e35aa9b79f661b82216eaf62e860cc 100644 (file)
--- a/src/common/image.cpp
+++ b/src/common/image.cpp
@@ -675,13 +675,13 @@ wxImage wxImage::ResampleBicubic(int width, int height) const
     for ( int dsty = 0; dsty < height; dsty++ )
     {
         // We need to calculate the source pixel to interpolate from - Y-axis
-        double srcpixy = dsty * M_IMGDATA->m_height / height;
+        double srcpixy = double(dsty * M_IMGDATA->m_height) / height;
         double dy = srcpixy - (int)srcpixy;
 
         for ( int dstx = 0; dstx < width; dstx++ )
         {
             // X-axis of pixel to interpolate from
-            double srcpixx = dstx * M_IMGDATA->m_width / width;
+            double srcpixx = double(dstx * M_IMGDATA->m_width) / width;
             double dx = srcpixx - (int)srcpixx;
 
             // Sums for each color channel
@@ -1665,7 +1665,9 @@ void wxImage::SetAlpha( unsigned char *alpha, bool static_data )
         alpha = (unsigned char *)malloc(M_IMGDATA->m_width*M_IMGDATA->m_height);
     }
 
-    free(M_IMGDATA->m_alpha);
+    if( !M_IMGDATA->m_staticAlpha )
+        free(M_IMGDATA->m_alpha);
+
     M_IMGDATA->m_alpha = alpha;
     M_IMGDATA->m_staticAlpha = static_data;
 }
@@ -1898,8 +1900,11 @@ bool wxImage::ConvertAlphaToMask(unsigned char threshold)
         }
     }
 
-    free(M_IMGDATA->m_alpha);
+    if( !M_IMGDATA->m_staticAlpha )
+        free(M_IMGDATA->m_alpha);
+
     M_IMGDATA->m_alpha = NULL;
+    M_IMGDATA->m_staticAlpha = false;
 
     return true;
 }