+bool wxBitmap::Create( int width, int height, int depth )
+{
+ UnRef();
+
+ if ( width <= 0 || height <= 0 )
+ {
+ return false;
+ }
+
+ GdkVisual *visual = wxTheApp->GetGdkVisual();
+
+ if (depth == -1)
+ depth = visual->depth;
+
+ wxCHECK_MSG( (depth == visual->depth) || (depth == 1), FALSE,
+ wxT("invalid bitmap depth") )
+
+ m_refData = new wxBitmapRefData();
+ M_BMPDATA->m_mask = (wxMask *) NULL;
+ M_BMPDATA->m_width = width;
+ M_BMPDATA->m_height = height;
+ if (depth == 1)
+ {
+ M_BMPDATA->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
+ M_BMPDATA->m_bpp = 1;
+ }
+ else
+ {
+ M_BMPDATA->m_pixmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, depth );
+ M_BMPDATA->m_bpp = visual->depth;
+ }
+
+ return Ok();
+}
+
+bool wxBitmap::CreateFromXpm( const char **bits )
+{
+ UnRef();
+
+ wxCHECK_MSG( bits != NULL, FALSE, wxT("invalid bitmap data") )
+
+ GdkVisual *visual = wxTheApp->GetGdkVisual();
+
+ m_refData = new wxBitmapRefData();
+
+ GdkBitmap *mask = (GdkBitmap*) NULL;
+
+ M_BMPDATA->m_pixmap = gdk_pixmap_create_from_xpm_d( wxGetRootWindow()->window, &mask, NULL, (gchar **) bits );
+
+ wxCHECK_MSG( M_BMPDATA->m_pixmap, FALSE, wxT("couldn't create pixmap") );
+
+ if (mask)
+ {
+ M_BMPDATA->m_mask = new wxMask();
+ M_BMPDATA->m_mask->m_bitmap = mask;
+ }
+
+ gdk_window_get_size( M_BMPDATA->m_pixmap, &(M_BMPDATA->m_width), &(M_BMPDATA->m_height) );
+
+ M_BMPDATA->m_bpp = visual->depth; // Can we get a different depth from create_from_xpm_d() ?
+
+ return TRUE;
+}
+
+wxBitmap wxBitmap::Rescale( int clipx, int clipy, int clipwidth, int clipheight, int newx, int newy )
+{
+ wxCHECK_MSG( Ok(), wxNullBitmap, wxT("invalid bitmap") );
+
+ if (newy==M_BMPDATA->m_width && newy==M_BMPDATA->m_height)
+ return *this;
+
+ int width = wxMax(newx, 1);
+ int height = wxMax(newy, 1);
+ width = wxMin(width, clipwidth);
+ height = wxMin(height, clipheight);
+
+ wxBitmap bmp;
+
+#ifdef __WXGTK20__
+ if (HasPixbuf())
+ {
+ bmp.SetWidth(width);
+ bmp.SetHeight(height);
+ bmp.SetDepth(GetDepth());
+ bmp.SetPixbuf(gdk_pixbuf_new(GDK_COLORSPACE_RGB,
+ gdk_pixbuf_get_has_alpha(GetPixbuf()),
+ 8, width, height));
+ gdk_pixbuf_scale(GetPixbuf(), bmp.GetPixbuf(),
+ 0, 0, width, height,
+ clipx, clipy,
+ (double)newx/GetWidth(), (double)newy/GetHeight(),
+ GDK_INTERP_BILINEAR);
+ }
+ else
+#endif // __WXGTK20__
+ {
+ GdkImage *img = (GdkImage*) NULL;
+ if (GetPixmap())
+ img = gdk_image_get( GetPixmap(), 0, 0, GetWidth(), GetHeight() );
+ else if (GetBitmap())
+ img = gdk_image_get( GetBitmap(), 0, 0, GetWidth(), GetHeight() );
+ else
+ wxFAIL_MSG( wxT("Ill-formed bitmap") );
+
+ wxCHECK_MSG( img, wxNullBitmap, wxT("couldn't create image") );
+
+ int bpp = -1;
+
+
+ GdkGC *gc = NULL;
+ GdkPixmap *dstpix = NULL;
+ if (GetPixmap())
+ {
+ GdkVisual *visual = gdk_window_get_visual( GetPixmap() );
+ if (visual == NULL)
+ visual = wxTheApp->GetGdkVisual();
+
+ bpp = visual->depth;
+ bmp = wxBitmap(width,height,bpp);
+ dstpix = bmp.GetPixmap();
+ gc = gdk_gc_new( dstpix );
+ }
+
+ char *dst = NULL;
+ long dstbyteperline = 0;
+
+ if (GetBitmap())
+ {
+ bpp = 1;
+ dstbyteperline = width/8*M_BMPDATA->m_bpp;
+ if (width*M_BMPDATA->m_bpp % 8 != 0)
+ dstbyteperline++;
+ dst = (char*) malloc(dstbyteperline*height);
+ }
+
+ // be careful to use the right scaling factor
+ float scx = (float)M_BMPDATA->m_width/(float)newx;
+ float scy = (float)M_BMPDATA->m_height/(float)newy;
+ // prepare accel-tables
+ int *tablex = (int *)calloc(width,sizeof(int));
+ int *tabley = (int *)calloc(height,sizeof(int));
+
+ // accel table filled with clipped values
+ for (int x = 0; x < width; x++)
+ tablex[x] = (int) (scx * (x+clipx));
+ for (int y = 0; y < height; y++)
+ tabley[y] = (int) (scy * (y+clipy));
+
+ // Main rescaling routine starts here
+ for (int h = 0; h < height; h++)
+ {
+ char outbyte = 0;
+ int old_x = -1;
+ guint32 old_pixval = 0;
+
+ for (int w = 0; w < width; w++)
+ {
+ guint32 pixval;
+ int x = tablex[w];
+ if (x == old_x)
+ pixval = old_pixval;
+ else
+ {
+ pixval = gdk_image_get_pixel( img, x, tabley[h] );
+ old_pixval = pixval;
+ old_x = x;
+ }
+
+ if (bpp == 1)
+ {
+ if (!pixval)
+ {
+ char bit=1;
+ char shift = bit << w % 8;
+ outbyte |= shift;
+ }
+
+ if ((w+1)%8==0)
+ {
+ dst[h*dstbyteperline+w/8] = outbyte;
+ outbyte = 0;
+ }
+ }
+ else
+ {
+ GdkColor col;
+ col.pixel = pixval;
+ gdk_gc_set_foreground( gc, &col );
+ gdk_draw_point( dstpix, gc, w, h);
+ }
+ }
+
+ // do not forget the last byte
+ if ((bpp == 1) && (width % 8 != 0))
+ dst[h*dstbyteperline+width/8] = outbyte;
+ }
+
+ gdk_image_destroy( img );
+ if (gc) gdk_gc_unref( gc );
+
+ if (bpp == 1)
+ {
+ bmp = wxBitmap( (const char *)dst, width, height, 1 );
+ free( dst );
+ }
+
+ if (GetMask())
+ {
+ dstbyteperline = width/8;
+ if (width % 8 != 0)
+ dstbyteperline++;
+ dst = (char*) malloc(dstbyteperline*height);
+ img = gdk_image_get( GetMask()->GetBitmap(), 0, 0, GetWidth(), GetHeight() );
+
+ for (int h = 0; h < height; h++)
+ {
+ char outbyte = 0;
+ int old_x = -1;
+ guint32 old_pixval = 0;
+
+ for (int w = 0; w < width; w++)
+ {
+ guint32 pixval;
+ int x = tablex[w];
+ if (x == old_x)
+ pixval = old_pixval;
+ else
+ {
+ pixval = gdk_image_get_pixel( img, x, tabley[h] );
+ old_pixval = pixval;
+ old_x = x;
+ }
+
+ if (pixval)
+ {
+ char bit=1;
+ char shift = bit << w % 8;
+ outbyte |= shift;
+ }
+
+ if ((w+1)%8 == 0)
+ {
+ dst[h*dstbyteperline+w/8] = outbyte;
+ outbyte = 0;
+ }
+ }
+
+ // do not forget the last byte
+ if (width % 8 != 0)
+ dst[h*dstbyteperline+width/8] = outbyte;
+ }
+ wxMask* mask = new wxMask;
+ mask->m_bitmap = gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar *) dst, width, height );
+ bmp.SetMask(mask);
+
+ free( dst );
+ gdk_image_destroy( img );
+ }
+
+ free( tablex );
+ free( tabley );
+ }
+
+ return bmp;
+}
+
+bool wxBitmap::CreateFromImage(const wxImage& image, int depth)
+{
+ UnRef();
+
+ wxCHECK_MSG( image.Ok(), FALSE, wxT("invalid image") )
+ wxCHECK_MSG( depth == -1 || depth == 1, FALSE, wxT("invalid bitmap depth") )
+
+ if (image.GetWidth() <= 0 || image.GetHeight() <= 0)
+ return false;
+
+ m_refData = new wxBitmapRefData();
+
+ if (depth == 1)
+ {
+ return CreateFromImageAsBitmap(image);
+ }
+ else
+ {
+#ifdef __WXGTK20__
+ if (image.HasAlpha())
+ return CreateFromImageAsPixbuf(image);
projects / wxWidgets.git / blobdiff