unsigned char m_maskRed,m_maskGreen,m_maskBlue;
bool m_ok;
bool m_static;
+#if wxUSE_PALETTE
wxPalette m_palette;
+#endif // wxUSE_PALETTE
wxArrayString m_optionNames;
wxArrayString m_optionValues;
};
wxCHECK_MSG( Ok(), image, wxT("invalid image") );
- wxCHECK_MSG( (width > 0) && (height > 0), image, wxT("invalid image size") );
+ // can't scale to/from 0 size
+ wxCHECK_MSG( (width > 0) && (height > 0), image,
+ wxT("invalid new image size") );
+
+ long old_height = M_IMGDATA->m_height,
+ old_width = M_IMGDATA->m_width;
+ wxCHECK_MSG( (old_height > 0) && (old_width > 0), image,
+ wxT("invalid old image size") );
image.Create( width, height );
wxCHECK_MSG( data, image, wxT("unable to create image") );
if (M_IMGDATA->m_hasMask)
- image.SetMaskColour( M_IMGDATA->m_maskRed, M_IMGDATA->m_maskGreen, M_IMGDATA->m_maskBlue );
-
- long old_height = M_IMGDATA->m_height;
- long old_width = M_IMGDATA->m_width;
+ {
+ image.SetMaskColour( M_IMGDATA->m_maskRed,
+ M_IMGDATA->m_maskGreen,
+ M_IMGDATA->m_maskBlue );
+ }
char unsigned *source_data = M_IMGDATA->m_data;
char unsigned *target_data = data;
+#if 0
+ // This is nonsense, RR.
+
+ // We do (x, y) -> (x, y)*oldSize/newSize but the valid values of x and y
+ // are from 0 to size-1, hence all decrement the sizes
+ long old_old_width = old_width;
+ old_height--;
+ old_width--;
+ height--;
+ width--;
+ for ( long j = 0; j <= height; j++ )
+ {
+ // don't crash for images with height == 1
+ long y_offset = height ? (j * old_height / height)* old_old_width : 0;
+
+ for ( long i = 0; i <= width; i++ )
+ {
+ long x_offset = width ? (i * old_width) / width : 0;
+
+ memcpy( target_data, source_data + 3*(y_offset + x_offset), 3 );
+ target_data += 3;
+ }
+ }
+#else
for (long j = 0; j < height; j++)
{
long y_offset = (j * old_height / height) * old_width;
target_data += 3;
}
}
+#endif
return image;
}
}
return;
}
-
+
if (!HasMask() && image.HasMask())
{
unsigned char r = image.GetMaskRed();
unsigned char g = image.GetMaskGreen();
unsigned char b = image.GetMaskBlue();
-
+
width *= 3;
unsigned char* source_data = image.GetData() + xx*3 + yy*3*image.GetWidth();
int source_step = image.GetWidth()*3;
unsigned char* target_data = GetData() + (x+xx)*3 + (y+yy)*3*M_IMGDATA->m_width;
int target_step = M_IMGDATA->m_width*3;
-
+
for (int j = 0; j < height; j++)
{
for (int i = 0; i < width; i+=3)
{
- if ((source_data[i] != r) &&
- (source_data[i+1] != g) &&
+ if ((source_data[i] != r) &&
+ (source_data[i+1] != g) &&
(source_data[i+2] != b))
{
memcpy( target_data+i, source_data+i, 3 );
}
- }
+ }
source_data += source_step;
target_data += target_step;
}
return M_IMGDATA->m_height;
}
+
+bool wxImage::FindFirstUnusedColour(
+ unsigned char *r, unsigned char *g, unsigned char *b,
+ unsigned char startR, unsigned char startG, unsigned char startB)
+{
+ wxHashTable hTable;
+ unsigned long key;
+
+ ComputeHistogram( hTable );
+
+ unsigned char r2 = startR;
+ unsigned char g2 = startG;
+ unsigned char b2 = startB;
+
+ key = (r2 << 16) | (g2 << 8) | b2;
+
+ while ( (wxHNode *) hTable.Get(key) )
+ {
+ // color already used
+ r2++;
+ if ( r2 >= 255 )
+ {
+ r2 = 0;
+ g2++;
+ if ( g2 >= 255 )
+ {
+ g2 = 0;
+ b2++;
+ if ( b2 >= 255 )
+ {
+ wxLogError( _("GetUnusedColour:: No Unused Color in image ") );
+ return FALSE;
+ }
+ }
+ }
+
+ key = (r2 << 16) | (g2 << 8) | b2;
+ }
+
+ if (r) *r = r2;
+ if (g) *g = g2;
+ if (b) *b = b2;
+
+ return TRUE;
+}
+
+
+bool wxImage::SetMaskFromImage(const wxImage& mask,
+ unsigned char mr, unsigned char mg, unsigned char mb)
+{
+ // check that the images are the same size
+ if ( (M_IMGDATA->m_height != mask.GetHeight() ) || (M_IMGDATA->m_width != mask.GetWidth () ) )
+ {
+ wxLogError( _("Image and Mask have different sizes") );
+ return FALSE;
+ }
+
+ // find unused colour
+ unsigned char r,g,b ;
+ if (!FindFirstUnusedColour(&r, &g, &b))
+ {
+ wxLogError( _("No Unused Color in image being masked") );
+ return FALSE ;
+ }
+
+ char unsigned *imgdata = GetData();
+ char unsigned *maskdata = mask.GetData();
+
+ const int w = GetWidth();
+ const int h = GetHeight();
+
+ for (int j = 0; j < h; j++)
+ {
+ for (int i = 0; i < w; i++)
+ {
+ if ((maskdata[0] == mr) && (maskdata[1] == mg) && (maskdata[2] == mb))
+ {
+ imgdata[0] = r;
+ imgdata[1] = g;
+ imgdata[2] = b;
+ }
+ imgdata += 3;
+ maskdata += 3;
+ }
+ }
+
+ SetMaskColour(r, g, b);
+ SetMask(TRUE);
+
+ return TRUE;
+}
+
+#if wxUSE_PALETTE
+
// Palette functions
bool wxImage::HasPalette() const
M_IMGDATA->m_palette = palette;
}
+#endif // wxUSE_PALETTE
+
// Option functions (arbitrary name/value mapping)
void wxImage::SetOption(const wxString& name, const wxString& value)
{
void wxImage::InitStandardHandlers()
{
- AddHandler( new wxBMPHandler );
+ AddHandler(new wxBMPHandler);
+#if wxUSE_XPM && !defined(__WXGTK__) && !defined(__WXMOTIF__)
+ AddHandler(new wxXPMHandler);
+#endif
}
void wxImage::CleanUpHandlers()
{
wxHashTable h;
wxObject dummy;
- unsigned char r, g, b, *p;
+ unsigned char r, g, b;
+ unsigned char *p;
unsigned long size, nentries, key;
p = GetData();
//
unsigned long wxImage::ComputeHistogram( wxHashTable &h )
{
- unsigned char r, g, b, *p;
+ unsigned char r, g, b;
+ unsigned char *p;
unsigned long size, nentries, key;
wxHNode *hnode;
projects / wxWidgets.git / blobdiff