#include "wx/log.h"
#include "wx/app.h"
#include "wx/filefn.h"
-#include "wx/filesys.h"
#include "wx/wfstream.h"
#include "wx/intl.h"
#include "wx/module.h"
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-1) / (height-1)) * old_width;
+ long y_offset = (j * old_height / height) * old_width;
for (long i = 0; i < width; i++)
{
memcpy( target_data,
- source_data + 3*(y_offset + ((i * (old_width-1) )/ (width-1))),
+ source_data + 3*(y_offset + ((i * old_width )/ width)),
3 );
target_data += 3;
}
}
+#endif
return image;
}
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)
{
bool wxImage::LoadFile( const wxString& filename, long type )
{
#if wxUSE_STREAMS
- // We want to use wxFileSystem for virtual FS compatibility
- wxFileSystem fsys;
- wxFSFile *file = fsys.OpenFile(filename);
- if (!file) {
- wxLogError(_("Can't open file '%s'"), filename);
- return FALSE;
- }
- wxInputStream *stream = file->GetStream();
- if (!stream) {
- wxLogError(_("Can't open stream for file '%s'"), filename);
+ if (wxFileExists(filename))
+ {
+ wxFileInputStream stream(filename);
+ wxBufferedInputStream bstream( stream );
+ return LoadFile(bstream, type);
+ }
+ else
+ {
+ wxLogError( _("Can't load image from file '%s': file does not exist."), filename.c_str() );
+
return FALSE;
- }
- return LoadFile(*stream, type);
+ }
#else // !wxUSE_STREAMS
return FALSE;
#endif // wxUSE_STREAMS
bool wxImage::LoadFile( const wxString& filename, const wxString& mimetype )
{
#if wxUSE_STREAMS
- // We want to use wxFileSystem for virtual FS compatibility
- wxFileSystem fsys;
- wxFSFile *file = fsys.OpenFile(filename);
- if (!file) {
- wxLogError(_("Can't open file '%s'"), filename);
- return FALSE;
- }
- wxInputStream *stream = file->GetStream();
- if (!stream) {
- wxLogError(_("Can't open stream for file '%s'"), filename);
+ if (wxFileExists(filename))
+ {
+ wxFileInputStream stream(filename);
+ wxBufferedInputStream bstream( stream );
+ return LoadFile(bstream, mimetype);
+ }
+ else
+ {
+ wxLogError( _("Can't load image from file '%s': file does not exist."), filename.c_str() );
+
return FALSE;
- }
- return LoadFile(*stream, mimetype);
+ }
#else // !wxUSE_STREAMS
return FALSE;
#endif // wxUSE_STREAMS
void wxImage::InitStandardHandlers()
{
AddHandler(new wxBMPHandler);
-#if !defined(__WXGTK__) && !defined(__WXMOTIF__)
+#if wxUSE_XPM && !defined(__WXGTK__) && !defined(__WXMOTIF__)
AddHandler(new wxXPMHandler);
#endif
}
projects / wxWidgets.git / blobdiff