{
public:
wxImageRefData();
- ~wxImageRefData();
+ virtual ~wxImageRefData();
int m_width;
int m_height;
unsigned char *m_data;
+
bool m_hasMask;
unsigned char m_maskRed,m_maskGreen,m_maskBlue;
+
+ // alpha channel data, may be NULL for the formats without alpha support
+ unsigned char *m_alpha;
+
bool m_ok;
bool m_static;
+
#if wxUSE_PALETTE
wxPalette m_palette;
#endif // wxUSE_PALETTE
+
wxArrayString m_optionNames;
wxArrayString m_optionValues;
{
m_width = 0;
m_height = 0;
- m_data = (unsigned char*) NULL;
- m_ok = FALSE;
+ m_data =
+ m_alpha = (unsigned char *) NULL;
+
m_maskRed = 0;
m_maskGreen = 0;
m_maskBlue = 0;
m_hasMask = FALSE;
+
+ m_ok = FALSE;
m_static = FALSE;
}
wxImageRefData::~wxImageRefData()
{
- if (m_data && !m_static)
+ if ( !m_static )
free( m_data );
+
+ free(m_alpha);
}
wxList wxImage::sm_handlers;
{
}
-wxImage::wxImage( int width, int height )
+wxImage::wxImage( int width, int height, bool clear )
{
- Create( width, height );
+ Create( width, height, clear );
}
wxImage::wxImage( int width, int height, unsigned char* data, bool static_data )
if (image) Ref(*image);
}
-void wxImage::Create( int width, int height )
+void wxImage::Create( int width, int height, bool clear )
{
UnRef();
M_IMGDATA->m_data = (unsigned char *) malloc( width*height*3 );
if (M_IMGDATA->m_data)
{
- for (int l = 0; l < width*height*3; l++) M_IMGDATA->m_data[l] = 0;
+ if (clear) memset(M_IMGDATA->m_data, 0, width*height*3);
M_IMGDATA->m_width = width;
M_IMGDATA->m_height = height;
wxCHECK_MSG( Ok(), image, wxT("invalid image") );
- image.Create( M_IMGDATA->m_width, M_IMGDATA->m_height );
+ image.Create( M_IMGDATA->m_width, M_IMGDATA->m_height, false );
- char unsigned *data = image.GetData();
+ unsigned char *data = image.GetData();
wxCHECK_MSG( data, image, wxT("unable to create image") );
long width = old_width / xFactor ;
long height = old_height / yFactor ;
- image.Create( width , height );
+ image.Create( width, height, false );
char unsigned *data = image.GetData();
{
return ShrinkBy( old_width / width , old_height / height ) ;
}
- image.Create( width, height );
+ image.Create( width, height, false );
- char unsigned *data = image.GetData();
+ unsigned char *data = image.GetData();
wxCHECK_MSG( data, image, wxT("unable to create image") );
M_IMGDATA->m_maskBlue );
}
- char unsigned *source_data = M_IMGDATA->m_data;
- char unsigned *target_data = data;
+ unsigned char *source_data = M_IMGDATA->m_data;
+ unsigned char *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;
+ long x_delta = (old_width<<16) / width;
+ long y_delta = (old_height<<16) / height;
- for ( long i = 0; i <= width; i++ )
- {
- long x_offset = width ? (i * old_width) / width : 0;
+ unsigned char* dest_pixel = target_data;
- 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;
+ long y = 0;
+ for ( long j = 0; j < height; j++ )
+ {
+ unsigned char* src_line = &source_data[(y>>16)*old_width*3];
- for (long i = 0; i < width; i++)
+ long x = 0;
+ for ( long i = 0; i < width; i++ )
{
- memcpy( target_data,
- source_data + 3*(y_offset + ((i * old_width )/ width)),
- 3 );
- target_data += 3;
+ unsigned char* src_pixel = &src_line[(x>>16)*3];
+ dest_pixel[0] = src_pixel[0];
+ dest_pixel[1] = src_pixel[1];
+ dest_pixel[2] = src_pixel[2];
+ dest_pixel += 3;
+ x += x_delta;
}
+
+ y += y_delta;
}
-#endif
// In case this is a cursor, make sure the hotspot is scalled accordingly:
if ( HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_X) )
wxCHECK_MSG( Ok(), image, wxT("invalid image") );
- image.Create( M_IMGDATA->m_height, M_IMGDATA->m_width );
+ image.Create( M_IMGDATA->m_height, M_IMGDATA->m_width, false );
- char unsigned *data = image.GetData();
+ unsigned char *data = image.GetData();
wxCHECK_MSG( data, image, wxT("unable to create image") );
long height = M_IMGDATA->m_height;
long width = M_IMGDATA->m_width;
- char unsigned *source_data = M_IMGDATA->m_data;
- char unsigned *target_data;
+ unsigned char *source_data = M_IMGDATA->m_data;
+ unsigned char *target_data;
for (long j = 0; j < height; j++)
{
wxCHECK_MSG( Ok(), image, wxT("invalid image") );
- image.Create( M_IMGDATA->m_width, M_IMGDATA->m_height );
+ image.Create( M_IMGDATA->m_width, M_IMGDATA->m_height, false );
- char unsigned *data = image.GetData();
+ unsigned char *data = image.GetData();
wxCHECK_MSG( data, image, wxT("unable to create image") );
long height = M_IMGDATA->m_height;
long width = M_IMGDATA->m_width;
- char unsigned *source_data = M_IMGDATA->m_data;
- char unsigned *target_data;
+ unsigned char *source_data = M_IMGDATA->m_data;
+ unsigned char *target_data;
if (horizontally)
{
int subwidth=rect.GetWidth();
const int subheight=rect.GetHeight();
- image.Create( subwidth, subheight );
+ image.Create( subwidth, subheight, false );
- char unsigned *subdata = image.GetData(), *data=GetData();
+ unsigned char *subdata = image.GetData(), *data=GetData();
wxCHECK_MSG( subdata, image, wxT("unable to create image") );
{
wxCHECK_RET( Ok(), wxT("invalid image") );
- char unsigned *data = GetData();
+ unsigned char *data = GetData();
const int w = GetWidth();
const int h = GetHeight();
wxCHECK_MSG( Ok(), image, wxT("invalid image") );
- image.Create( M_IMGDATA->m_width, M_IMGDATA->m_height );
+ image.Create( M_IMGDATA->m_width, M_IMGDATA->m_height, false );
- char unsigned *data = image.GetData();
+ unsigned char *data = image.GetData();
wxCHECK_MSG( data, image, wxT("unable to create image") );
long size = M_IMGDATA->m_height * M_IMGDATA->m_width;
- char unsigned *srcd = M_IMGDATA->m_data;
- char unsigned *tard = image.GetData();
+ unsigned char *srcd = M_IMGDATA->m_data;
+ unsigned char *tard = image.GetData();
for ( long i = 0; i < size; i++, srcd += 3, tard += 3 )
{
return data && data->m_ok && data->m_width && data->m_height;
}
-char unsigned *wxImage::GetData() const
+unsigned char *wxImage::GetData() const
{
- wxCHECK_MSG( Ok(), (char unsigned *)NULL, wxT("invalid image") );
+ wxCHECK_MSG( Ok(), (unsigned char *)NULL, wxT("invalid image") );
return M_IMGDATA->m_data;
}
-void wxImage::SetData( char unsigned *data )
+void wxImage::SetData( unsigned char *data )
{
wxCHECK_RET( Ok(), wxT("invalid image") );
m_refData = newRefData;
}
-void wxImage::SetData( char unsigned *data, int new_width, int new_height )
+void wxImage::SetData( unsigned char *data, int new_width, int new_height )
{
wxImageRefData *newRefData = new wxImageRefData();
m_refData = newRefData;
}
+// ----------------------------------------------------------------------------
+// alpha channel support
+// ----------------------------------------------------------------------------
+
+void wxImage::SetAlpha(int x, int y, unsigned char alpha)
+{
+ wxCHECK_RET( Ok() && HasAlpha(), wxT("invalid image or no alpha channel") );
+
+ int w = M_IMGDATA->m_width,
+ h = M_IMGDATA->m_height;
+
+ wxCHECK_RET( x >=0 && y >= 0 && x < w && y < h, wxT("invalid image index") );
+
+ M_IMGDATA->m_alpha[y*w + x] = alpha;
+}
+
+unsigned char wxImage::GetAlpha(int x, int y)
+{
+ wxCHECK_MSG( Ok() && HasAlpha(), 0, wxT("invalid image or no alpha channel") );
+
+ int w = M_IMGDATA->m_width,
+ h = M_IMGDATA->m_height;
+
+ wxCHECK_MSG( x >=0 && y >= 0 && x < w && y < h, 0, wxT("invalid image index") );
+
+ return M_IMGDATA->m_alpha[y*w + x];
+}
+
+void wxImage::SetAlpha( unsigned char *alpha )
+{
+ wxCHECK_RET( Ok(), wxT("invalid image") );
+
+ if ( !alpha )
+ {
+ alpha = (unsigned char *)
+ malloc(M_IMGDATA->m_width*M_IMGDATA->m_height*3);
+ }
+
+ delete [] M_IMGDATA->m_alpha;
+ M_IMGDATA->m_alpha = alpha;
+}
+
+unsigned char *wxImage::GetAlpha() const
+{
+ wxCHECK_MSG( Ok(), (unsigned char *)NULL, wxT("invalid image") );
+
+ return M_IMGDATA->m_alpha;
+}
+
+// ----------------------------------------------------------------------------
+// mask support
+// ----------------------------------------------------------------------------
+
void wxImage::SetMaskColour( unsigned char r, unsigned char g, unsigned char b )
{
wxCHECK_RET( Ok(), wxT("invalid 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) const
-{
- wxImageHistogram histogram;
- unsigned long key;
-
- ComputeHistogram(histogram);
-
- unsigned char r2 = startR;
- unsigned char g2 = startG;
- unsigned char b2 = startB;
-
- key = (r2 << 16) | (g2 << 8) | b2;
-
- while ( histogram.find(key) != histogram.end() )
- {
- // 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,
+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") );
+ 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") );
+ wxLogError( _("No Unused Color in image being masked") );
return FALSE ;
}
-
- char unsigned *imgdata = GetData();
- char unsigned *maskdata = mask.GetData();
+
+ unsigned char *imgdata = GetData();
+ unsigned char *maskdata = mask.GetData();
const int w = GetWidth();
const int h = GetHeight();
SetMaskColour(r, g, b);
SetMask(TRUE);
-
+
return TRUE;
}
bool wxImage::SaveFile( const wxString& filename ) const
{
wxString ext = filename.AfterLast('.').Lower();
-
+
wxImageHandler * pHandler = FindHandler(ext, -1);
if (pHandler)
{
}
}
+
//-----------------------------------------------------------------------------
// wxImageHandler
//-----------------------------------------------------------------------------
#endif // WXWIN_COMPATIBILITY_2_2 && wxUSE_GUI
-//-----------------------------------------------------------------------------
+// ----------------------------------------------------------------------------
+// image histogram stuff
+// ----------------------------------------------------------------------------
+
+bool
+wxImageHistogram::FindFirstUnusedColour(unsigned char *r,
+ unsigned char *g,
+ unsigned char *b,
+ unsigned char r2,
+ unsigned char b2,
+ unsigned char g2) const
+{
+ unsigned long key = MakeKey(r2, g2, b2);
+
+ while ( find(key) != end() )
+ {
+ // 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 = MakeKey(r2, g2, b2);
+ }
+
+ if ( r )
+ *r = r2;
+ if ( g )
+ *g = g2;
+ if ( b )
+ *b = b2;
+
+ return TRUE;
+}
+
+bool
+wxImage::FindFirstUnusedColour(unsigned char *r,
+ unsigned char *g,
+ unsigned char *b,
+ unsigned char r2,
+ unsigned char b2,
+ unsigned char g2) const
+{
+ wxImageHistogram histogram;
+
+ ComputeHistogram(histogram);
+
+ return histogram.FindFirstUnusedColour(r, g, b, r2, g2, b2);
+}
+
+
// GRG, Dic/99
// Counts and returns the number of different colours. Optionally stops
r = *(p++);
g = *(p++);
b = *(p++);
- key = (r << 16) | (g << 8) | b;
+ key = wxImageHistogram::MakeKey(r, g, b);
if (h.Get(key) == NULL)
{
unsigned long wxImage::ComputeHistogram( wxImageHistogram &h ) const
{
- unsigned char r, g, b;
- unsigned char *p;
- unsigned long size, nentries, key;
+ unsigned char *p = GetData();
+ unsigned long nentries = 0;
h.clear();
- p = GetData();
- size = GetWidth() * GetHeight();
- nentries = 0;
+ const unsigned long size = GetWidth() * GetHeight();
- for (unsigned long j = 0; j < size; j++)
+ unsigned char r, g, b;
+ for ( unsigned long n = 0; n < size; n++ )
{
- r = *(p++);
- g = *(p++);
- b = *(p++);
- key = (r << 16) | (g << 8) | b;
+ r = *p++;
+ g = *p++;
+ b = *p++;
+
+ wxImageHistogramEntry& entry = h[wxImageHistogram::MakeKey(r, g, b)];
- wxImageHistogramEntry& entry = h[key];
if ( entry.value++ == 0 )
entry.index = nentries++;
}
int x2 = (int) ceil (wxMax (wxMax(p1.x, p2.x), wxMax(p3.x, p4.x)));
int y2 = (int) ceil (wxMax (wxMax(p1.y, p2.y), wxMax(p3.y, p4.y)));
- wxImage rotated (x2 - x1 + 1, y2 - y1 + 1);
+ wxImage rotated (x2 - x1 + 1, y2 - y1 + 1, false);
if (offset_after_rotation != NULL)
{
projects / wxWidgets.git / blobdiff