X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/55ccdb93e4ae4b606a4068cb37492c1ec3ed77a6..c4e43bea7b24f7b7f58e3f87786490cd81abf0a7:/src/gtk/bitmap.cpp diff --git a/src/gtk/bitmap.cpp b/src/gtk/bitmap.cpp index 37cf202e56..e5f2b669d1 100644 --- a/src/gtk/bitmap.cpp +++ b/src/gtk/bitmap.cpp @@ -304,180 +304,67 @@ wxBitmap wxBitmap::Rescale(int clipx, int clipy, int clipwidth, int clipheight, wxCHECK_MSG(Ok(), bmp, 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); - // scale pixbuf if available and it has alpha or there is no mask - if (M_BMPDATA->m_pixbuf != NULL && ( - M_BMPDATA->m_mask == NULL || gdk_pixbuf_get_has_alpha(M_BMPDATA->m_pixbuf))) - { - bmp.SetPixbuf(gdk_pixbuf_new(GDK_COLORSPACE_RGB, - gdk_pixbuf_get_has_alpha(M_BMPDATA->m_pixbuf), - 8, width, height), M_BMPDATA->m_bpp); - gdk_pixbuf_scale(M_BMPDATA->m_pixbuf, bmp.GetPixbuf(), - 0, 0, width, height, - clipx, clipy, - (double)newx/GetWidth(), (double)newy/GetHeight(), - GDK_INTERP_BILINEAR); - } - else - { - GdkImage* img = gdk_drawable_get_image( - M_BMPDATA->m_pixmap, 0, 0, M_BMPDATA->m_width, M_BMPDATA->m_height); - - wxCHECK_MSG(img, bmp, wxT("couldn't create image")); - - GdkGC *gc = NULL; - GdkPixmap *dstpix = NULL; - char *dst = NULL; - long dstbyteperline = 0; - - if (GetDepth() != 1) - { - bmp.Create(width, height, gdk_drawable_get_depth(M_BMPDATA->m_pixmap)); - dstpix = bmp.GetPixmap(); - gc = gdk_gc_new( dstpix ); - } - else - { - dstbyteperline = (width + 7) / 8; - 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 ( dst ) - { - 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 ( dst && (width % 8 != 0) ) - dst[h*dstbyteperline+width/8] = outbyte; - } + const double scale_x = double(newx) / M_BMPDATA->m_width; + const double scale_y = double(newy) / M_BMPDATA->m_height; - g_object_unref (img); - if (gc) g_object_unref (gc); + // Converting to pixbuf, scaling with gdk_pixbuf_scale, and converting + // back, is faster than scaling pixmap ourselves. - if ( dst ) - { - bmp = wxBitmap(dst, width, height, 1); - free( dst ); - } + // use pixbuf if already available, + // otherwise create temporary pixbuf from pixmap + GdkPixbuf* pixbuf = M_BMPDATA->m_pixbuf; + if (pixbuf) + g_object_ref(pixbuf); + else + pixbuf = gdk_pixbuf_get_from_drawable( + NULL, M_BMPDATA->m_pixmap, NULL, + 0, 0, 0, 0, M_BMPDATA->m_width, M_BMPDATA->m_height); - if (GetMask()) - { - dstbyteperline = (width + 7) / 8; - dst = (char*) malloc(dstbyteperline*height); - img = gdk_drawable_get_image(GetMask()->GetBitmap(), 0, 0, GetWidth(), GetHeight()); + // new pixbuf for scaled wxBitmap + GdkPixbuf* pixbuf_scaled = gdk_pixbuf_new( + GDK_COLORSPACE_RGB, gdk_pixbuf_get_has_alpha(pixbuf), 8, width, height); - for (int h = 0; h < height; h++) - { - char outbyte = 0; - int old_x = -1; - guint32 old_pixval = 0; + // GDK_INTERP_NEAREST is the lowest-quality method for continuous-tone + // images, but the only one which preserves sharp edges + gdk_pixbuf_scale( + pixbuf, pixbuf_scaled, + 0, 0, width, height, -clipx, -clipy, scale_x, scale_y, + GDK_INTERP_NEAREST); - 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; - } + g_object_unref(pixbuf); + bmp.SetPixbuf(pixbuf_scaled, M_BMPDATA->m_bpp); - if (pixval) - { - char bit=1; - char shift = bit << (w % 8); - outbyte |= shift; - } + if (M_BMPDATA->m_mask) + { + pixbuf = gdk_pixbuf_get_from_drawable( + NULL, M_BMPDATA->m_mask->m_bitmap, NULL, + 0, 0, 0, 0, M_BMPDATA->m_width, M_BMPDATA->m_height); - if ((w+1)%8 == 0) - { - dst[h*dstbyteperline+w/8] = outbyte; - outbyte = 0; - } - } + pixbuf_scaled = gdk_pixbuf_new( + GDK_COLORSPACE_RGB, false, 8, width, height); - // 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); + gdk_pixbuf_scale( + pixbuf, pixbuf_scaled, + 0, 0, width, height, -clipx, -clipy, scale_x, scale_y, + GDK_INTERP_NEAREST); - free( dst ); - g_object_unref (img); - } + g_object_unref(pixbuf); - free( tablex ); - free( tabley ); + // use existing functionality to create mask from scaled pixbuf + wxBitmap maskbmp; + maskbmp.SetPixbuf(pixbuf_scaled); + bmp.SetMask(new wxMask(maskbmp, *wxBLACK)); } - return bmp; } +#if wxUSE_IMAGE + bool wxBitmap::CreateFromImage(const wxImage& image, int depth) { UnRef(); @@ -708,6 +595,8 @@ wxImage wxBitmap::ConvertToImage() const return image; } +#endif // wxUSE_IMAGE + bool wxBitmap::IsOk() const { return (m_refData != NULL) && @@ -807,9 +696,13 @@ bool wxBitmap::SaveFile( const wxString &name, wxBitmapType type, const wxPalett { wxCHECK_MSG( Ok(), false, wxT("invalid bitmap") ); +#if wxUSE_IMAGE // Try to save the bitmap via wxImage handlers: wxImage image = ConvertToImage(); return image.Ok() && image.SaveFile(name, type); +#else // !wxUSE_IMAGE + return false; +#endif // wxUSE_IMAGE } bool wxBitmap::LoadFile( const wxString &name, wxBitmapType type ) @@ -827,12 +720,14 @@ bool wxBitmap::LoadFile( const wxString &name, wxBitmapType type ) M_BMPDATA->m_mask->m_bitmap = mask; } } +#if wxUSE_IMAGE else // try if wxImage can load it { wxImage image; if (image.LoadFile(name, type) && image.Ok()) CreateFromImage(image, -1); } +#endif // wxUSE_IMAGE return Ok(); } @@ -901,7 +796,7 @@ GdkPixmap *wxBitmap::GetPixmap() const gdk_pixbuf_render_pixmap_and_mask(M_BMPDATA->m_pixbuf, &M_BMPDATA->m_pixmap, pmask, - wxIMAGE_ALPHA_THRESHOLD); + 0x80 /* alpha threshold */); } return M_BMPDATA->m_pixmap; @@ -1032,19 +927,6 @@ bool wxBitmap::HasAlpha() const gdk_pixbuf_get_has_alpha(M_BMPDATA->m_pixbuf); } -void wxBitmap::UseAlpha() -{ - GdkPixbuf* pixbuf = GetPixbuf(); - // add alpha if necessary - if (!gdk_pixbuf_get_has_alpha(pixbuf)) - { - M_BMPDATA->m_pixbuf = NULL; - AllocExclusive(); - M_BMPDATA->m_pixbuf = gdk_pixbuf_add_alpha(pixbuf, false, 0, 0, 0); - g_object_unref(pixbuf); - } -} - wxObjectRefData* wxBitmap::CreateRefData() const { return new wxBitmapRefData;