unsigned char *m_alpha;
bool m_ok;
+
+ // if true, m_data is pointer to static data and shouldn't be freed
bool m_static;
+ // same as m_static but for m_alpha
+ bool m_staticAlpha;
+
#if wxUSE_PALETTE
wxPalette m_palette;
#endif // wxUSE_PALETTE
m_hasMask = false;
m_ok = false;
- m_static = false;
+ m_static =
+ m_staticAlpha = false;
}
wxImageRefData::~wxImageRefData()
{
- if (!m_static)
- {
+ if ( !m_static )
free( m_data );
+ if ( !m_staticAlpha )
free( m_alpha );
- }
}
wxList wxImage::sm_handlers;
{
#if wxUSE_XPM
UnRef();
-
+
wxXPMDecoder decoder;
(*this) = decoder.ReadData(xpmData);
return Ok();
unsigned char *target_data = data;
unsigned char *source_alpha = 0 ;
unsigned char *target_alpha = 0 ;
-
+
if (M_IMGDATA->m_hasMask)
{
image.SetMaskColour( M_IMGDATA->m_maskRed,
{
unsigned char* src_line = &source_data[(y>>16)*old_width*3];
unsigned char* src_alpha_line = source_alpha ? &source_alpha[(y>>16)*old_width] : 0 ;
-
+
long x = 0;
for ( long i = 0; i < width; i++ )
{
return image;
}
+wxImage wxImage::Size( const wxSize& size, const wxPoint& pos,
+ int r_, int g_, int b_ ) const
+{
+ wxImage image;
+
+ wxCHECK_MSG( Ok(), image, wxT("invalid image") );
+ wxCHECK_MSG( (size.GetWidth() > 0) && (size.GetHeight() > 0), image, wxT("invalid size") );
+
+ int width = GetWidth(), height = GetHeight();
+ image.Create(size.GetWidth(), size.GetHeight(), false);
+
+ unsigned char r = (unsigned char)r_;
+ unsigned char g = (unsigned char)g_;
+ unsigned char b = (unsigned char)b_;
+ if ((r_ == -1) && (g_ == -1) && (b_ == -1))
+ {
+ GetOrFindMaskColour( &r, &g, &b );
+ image.SetMaskColour(r, g, b);
+ }
+
+ image.SetRGB(wxRect(), r, g, b);
+
+ wxRect subRect(pos.x, pos.y, width, height);
+ wxRect finalRect(0, 0, size.GetWidth(), size.GetHeight());
+
+ subRect.Intersect(finalRect);
+
+ if (!subRect.IsEmpty())
+ {
+ if ((subRect.GetWidth() == width) && (subRect.GetHeight() == height))
+ image.Paste(*this, pos.x, pos.y);
+ else
+ image.Paste(GetSubImage(subRect), pos.x, pos.y);
+ }
+
+ return image;
+}
+
void wxImage::Paste( const wxImage &image, int x, int y )
{
wxCHECK_RET( Ok(), wxT("invalid image") );
if (height < 1) return;
if ((!HasMask() && !image.HasMask()) ||
+ (HasMask() && !image.HasMask()) ||
((HasMask() && image.HasMask() &&
(GetMaskRed()==image.GetMaskRed()) &&
(GetMaskGreen()==image.GetMaskGreen()) &&
return image;
}
-void wxImage::SetRGB( int x, int y, unsigned char r, unsigned char g, unsigned char b )
+int wxImage::GetWidth() const
{
- wxCHECK_RET( Ok(), wxT("invalid image") );
+ wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
- int w = M_IMGDATA->m_width;
- int h = M_IMGDATA->m_height;
+ return M_IMGDATA->m_width;
+}
- wxCHECK_RET( (x>=0) && (y>=0) && (x<w) && (y<h), wxT("invalid image index") );
+int wxImage::GetHeight() const
+{
+ wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
+
+ return M_IMGDATA->m_height;
+}
+
+long wxImage::XYToIndex(int x, int y) const
+{
+ if ( Ok() &&
+ x >= 0 && y >= 0 &&
+ x < M_IMGDATA->m_width && y < M_IMGDATA->m_height )
+ {
+ return y*M_IMGDATA->m_width + x;
+ }
+
+ return -1;
+}
- long pos = (y * w + x) * 3;
+void wxImage::SetRGB( int x, int y, unsigned char r, unsigned char g, unsigned char b )
+{
+ long pos = XYToIndex(x, y);
+ wxCHECK_RET( pos != -1, wxT("invalid image coordinates") );
+
+ pos *= 3;
M_IMGDATA->m_data[ pos ] = r;
M_IMGDATA->m_data[ pos+1 ] = g;
M_IMGDATA->m_data[ pos+2 ] = b;
}
-unsigned char wxImage::GetRed( int x, int y ) const
+void wxImage::SetRGB( const wxRect& rect_, unsigned char r, unsigned char g, unsigned char b )
{
- wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
+ wxCHECK_RET( Ok(), wxT("invalid image") );
+
+ wxRect rect(rect_);
+ wxRect imageRect(0, 0, GetWidth(), GetHeight());
+ if ( rect == wxRect() )
+ {
+ rect = imageRect;
+ }
+ else
+ {
+ wxCHECK_RET( imageRect.Inside(rect.GetTopLeft()) &&
+ imageRect.Inside(rect.GetBottomRight()),
+ wxT("invalid bounding rectangle") );
+ }
- int w = M_IMGDATA->m_width;
- int h = M_IMGDATA->m_height;
+ int x1 = rect.GetLeft(),
+ y1 = rect.GetTop(),
+ x2 = rect.GetRight() + 1,
+ y2 = rect.GetBottom() + 1;
- wxCHECK_MSG( (x>=0) && (y>=0) && (x<w) && (y<h), 0, wxT("invalid image index") );
+ unsigned char *data wxDUMMY_INITIALIZE(NULL);
+ int x, y, width = GetWidth();
+ for (y = y1; y < y2; y++)
+ {
+ data = M_IMGDATA->m_data + (y*width + x1)*3;
+ for (x = x1; x < x2; x++)
+ {
+ *data++ = r;
+ *data++ = g;
+ *data++ = b;
+ }
+ }
+}
+
+unsigned char wxImage::GetRed( int x, int y ) const
+{
+ long pos = XYToIndex(x, y);
+ wxCHECK_MSG( pos != -1, 0, wxT("invalid image coordinates") );
- long pos = (y * w + x) * 3;
+ pos *= 3;
return M_IMGDATA->m_data[pos];
}
unsigned char wxImage::GetGreen( int x, int y ) const
{
- wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
-
- int w = M_IMGDATA->m_width;
- int h = M_IMGDATA->m_height;
-
- wxCHECK_MSG( (x>=0) && (y>=0) && (x<w) && (y<h), 0, wxT("invalid image index") );
+ long pos = XYToIndex(x, y);
+ wxCHECK_MSG( pos != -1, 0, wxT("invalid image coordinates") );
- long pos = (y * w + x) * 3;
+ pos *= 3;
return M_IMGDATA->m_data[pos+1];
}
unsigned char wxImage::GetBlue( int x, int y ) const
{
- wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
-
- int w = M_IMGDATA->m_width;
- int h = M_IMGDATA->m_height;
+ long pos = XYToIndex(x, y);
+ wxCHECK_MSG( pos != -1, 0, wxT("invalid image coordinates") );
- wxCHECK_MSG( (x>=0) && (y>=0) && (x<w) && (y<h), 0, wxT("invalid image index") );
-
- long pos = (y * w + x) * 3;
+ pos *= 3;
return M_IMGDATA->m_data[pos+2];
}
return M_IMGDATA->m_data;
}
-void wxImage::SetData( unsigned char *data )
+void wxImage::SetData( unsigned char *data, bool static_data )
{
wxCHECK_RET( Ok(), wxT("invalid image") );
newRefData->m_maskGreen = M_IMGDATA->m_maskGreen;
newRefData->m_maskBlue = M_IMGDATA->m_maskBlue;
newRefData->m_hasMask = M_IMGDATA->m_hasMask;
+ newRefData->m_static = static_data;
UnRef();
m_refData = newRefData;
}
-void wxImage::SetData( unsigned char *data, int new_width, int new_height )
+void wxImage::SetData( unsigned char *data, int new_width, int new_height, bool static_data )
{
wxImageRefData *newRefData = new wxImageRefData();
newRefData->m_data = data;
newRefData->m_ok = true;
}
+ newRefData->m_static = static_data;
UnRef();
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( HasAlpha(), wxT("no alpha channel") );
- wxCHECK_RET( x >=0 && y >= 0 && x < w && y < h, wxT("invalid image index") );
+ long pos = XYToIndex(x, y);
+ wxCHECK_RET( pos != -1, wxT("invalid image coordinates") );
- M_IMGDATA->m_alpha[y*w + x] = alpha;
+ M_IMGDATA->m_alpha[pos] = alpha;
}
unsigned char wxImage::GetAlpha(int x, int y) const
{
- wxCHECK_MSG( Ok() && HasAlpha(), 0, wxT("invalid image or no alpha channel") );
+ wxCHECK_MSG( HasAlpha(), 0, wxT("no alpha channel") );
- int w = M_IMGDATA->m_width,
- h = M_IMGDATA->m_height;
+ long pos = XYToIndex(x, y);
+ wxCHECK_MSG( pos != -1, 0, wxT("invalid image coordinates") );
- wxCHECK_MSG( x >=0 && y >= 0 && x < w && y < h, 0, wxT("invalid image index") );
-
- return M_IMGDATA->m_alpha[y*w + x];
+ return M_IMGDATA->m_alpha[pos];
}
-bool wxImage::ConvertColourToAlpha( unsigned char r, unsigned char g, unsigned char b )
+bool
+wxImage::ConvertColourToAlpha(unsigned char r, unsigned char g, unsigned char b)
{
- SetAlpha( NULL );
+ SetAlpha(NULL);
- int w = M_IMGDATA->m_width,
- h = M_IMGDATA->m_height;
+ const int w = M_IMGDATA->m_width;
+ const int h = M_IMGDATA->m_height;
unsigned char *alpha = GetAlpha();
unsigned char *data = GetData();
- int x,y;
- for (y = 0; y < h; y++)
- for (x = 0; x < w; x++)
- {
- *alpha = *data;
- alpha++;
- *data = r;
- data++;
- *data = g;
- data++;
- *data = b;
- data++;
- }
+ for ( int y = 0; y < h; y++ )
+ {
+ for ( int x = 0; x < w; x++ )
+ {
+ *alpha++ = *data;
+ *data++ = r;
+ *data++ = g;
+ *data++ = b;
+ }
+ }
return true;
}
-void wxImage::SetAlpha( unsigned char *alpha )
+void wxImage::SetAlpha( unsigned char *alpha, bool static_data )
{
wxCHECK_RET( Ok(), wxT("invalid image") );
free(M_IMGDATA->m_alpha);
M_IMGDATA->m_alpha = alpha;
+ M_IMGDATA->m_staticAlpha = static_data;
}
unsigned char *wxImage::GetAlpha() const
unsigned char *alpha = M_IMGDATA->m_alpha;
const size_t lenAlpha = M_IMGDATA->m_width * M_IMGDATA->m_height;
- static const unsigned char ALPHA_TRANSPARENT = 0;
- static const unsigned char ALPHA_OPAQUE = 0xff;
if ( HasMask() )
{
// use the mask to initialize the alpha channel.
src += 3, alpha++ )
{
*alpha = (src[0] == mr && src[1] == mg && src[2] == mb)
- ? ALPHA_TRANSPARENT
- : ALPHA_OPAQUE;
+ ? wxIMAGE_ALPHA_TRANSPARENT
+ : wxIMAGE_ALPHA_OPAQUE;
}
M_IMGDATA->m_hasMask = false;
else // no mask
{
// make the image fully opaque
- memset(alpha, ALPHA_OPAQUE, lenAlpha);
+ memset(alpha, wxIMAGE_ALPHA_OPAQUE, lenAlpha);
}
}
M_IMGDATA->m_hasMask = true;
}
+bool wxImage::GetOrFindMaskColour( unsigned char *r, unsigned char *g, unsigned char *b ) const
+{
+ wxCHECK_MSG( Ok(), false, wxT("invalid image") );
+
+ if (M_IMGDATA->m_hasMask)
+ {
+ if (r) *r = M_IMGDATA->m_maskRed;
+ if (g) *g = M_IMGDATA->m_maskGreen;
+ if (b) *b = M_IMGDATA->m_maskBlue;
+ return true;
+ }
+ else
+ {
+ FindFirstUnusedColour(r, g, b);
+ return false;
+ }
+}
+
unsigned char wxImage::GetMaskRed() const
{
wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
return M_IMGDATA->m_hasMask;
}
-int wxImage::GetWidth() const
+bool wxImage::IsTransparent(int x, int y, unsigned char threshold) const
{
- wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
+ long pos = XYToIndex(x, y);
+ wxCHECK_MSG( pos != -1, false, wxT("invalid image coordinates") );
- return M_IMGDATA->m_width;
-}
+ // check mask
+ if ( M_IMGDATA->m_hasMask )
+ {
+ const unsigned char *p = M_IMGDATA->m_data + 3*pos;
+ if ( p[0] == M_IMGDATA->m_maskRed &&
+ p[1] == M_IMGDATA->m_maskGreen &&
+ p[2] == M_IMGDATA->m_maskBlue )
+ {
+ return true;
+ }
+ }
-int wxImage::GetHeight() const
-{
- wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
+ // then check alpha
+ if ( M_IMGDATA->m_alpha )
+ {
+ if ( M_IMGDATA->m_alpha[pos] < threshold )
+ {
+ // transparent enough
+ return true;
+ }
+ }
- return M_IMGDATA->m_height;
+ // not transparent
+ return false;
}
bool wxImage::SetMaskFromImage(const wxImage& mask,
return true;
}
-#if wxUSE_PALETTE
-
+// ----------------------------------------------------------------------------
// Palette functions
+// ----------------------------------------------------------------------------
+
+#if wxUSE_PALETTE
bool wxImage::HasPalette() const
{
#endif // wxUSE_PALETTE
+// ----------------------------------------------------------------------------
// Option functions (arbitrary name/value mapping)
+// ----------------------------------------------------------------------------
+
void wxImage::SetOption(const wxString& name, const wxString& value)
{
wxCHECK_RET( Ok(), wxT("invalid image") );
return (M_IMGDATA->m_optionNames.Index(name, false) != wxNOT_FOUND);
}
+// ----------------------------------------------------------------------------
+// image I/O
+// ----------------------------------------------------------------------------
+
bool wxImage::LoadFile( const wxString& filename, long type, int index )
{
#if wxUSE_STREAMS
}
#endif // wxUSE_STREAMS
+// ----------------------------------------------------------------------------
+// image I/O handlers
+// ----------------------------------------------------------------------------
+
void wxImage::AddHandler( wxImageHandler *handler )
{
// Check for an existing handler of the type being added.
projects / wxWidgets.git / blobdiff