X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/b7cacb43db1e69b87b257a67912b4d52995b070a..c17b2e31516424a77fd54b8fc192eac133269ce4:/src/gtk/bitmap.cpp diff --git a/src/gtk/bitmap.cpp b/src/gtk/bitmap.cpp index 1d9e3f82bd..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; + const double scale_x = double(newx) / M_BMPDATA->m_width; + const double scale_y = double(newy) / M_BMPDATA->m_height; - 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; - } + // Converting to pixbuf, scaling with gdk_pixbuf_scale, and converting + // back, is faster than scaling pixmap ourselves. - 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; - } + // 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); - g_object_unref (img); - if (gc) g_object_unref (gc); + // new pixbuf for scaled wxBitmap + GdkPixbuf* pixbuf_scaled = gdk_pixbuf_new( + GDK_COLORSPACE_RGB, gdk_pixbuf_get_has_alpha(pixbuf), 8, width, height); - if ( dst ) - { - bmp = wxBitmap(dst, width, height, 1); - free( dst ); - } + // 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); - if (GetMask()) - { - dstbyteperline = (width + 7) / 8; - dst = (char*) malloc(dstbyteperline*height); - img = gdk_drawable_get_image(GetMask()->GetBitmap(), 0, 0, GetWidth(), GetHeight()); + g_object_unref(pixbuf); + bmp.SetPixbuf(pixbuf_scaled, M_BMPDATA->m_bpp); - 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 (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(); @@ -708,10 +595,7 @@ wxImage wxBitmap::ConvertToImage() const return image; } -bool wxBitmap::operator == ( const wxBitmap& bmp ) const -{ - return m_refData == bmp.m_refData; -} +#endif // wxUSE_IMAGE bool wxBitmap::IsOk() const { @@ -754,6 +638,7 @@ void wxBitmap::SetMask( wxMask *mask ) { wxCHECK_RET( Ok(), wxT("invalid bitmap") ); + AllocExclusive(); delete M_BMPDATA->m_mask; M_BMPDATA->m_mask = mask; } @@ -811,9 +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 ) @@ -831,12 +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(); } @@ -857,25 +748,19 @@ void wxBitmap::SetPalette(const wxPalette& WXUNUSED(palette)) void wxBitmap::SetHeight( int height ) { - if (!m_refData) - m_refData = new wxBitmapRefData; - + AllocExclusive(); M_BMPDATA->m_height = height; } void wxBitmap::SetWidth( int width ) { - if (!m_refData) - m_refData = new wxBitmapRefData; - + AllocExclusive(); M_BMPDATA->m_width = width; } void wxBitmap::SetDepth( int depth ) { - if (!m_refData) - m_refData = new wxBitmapRefData; - + AllocExclusive(); M_BMPDATA->m_bpp = depth; } @@ -884,6 +769,8 @@ void wxBitmap::SetPixmap( GdkPixmap *pixmap ) if (!m_refData) m_refData = new wxBitmapRefData; + // AllocExclusive should not be needed for this internal function + wxASSERT(m_refData->GetRefCount() == 1); wxASSERT(M_BMPDATA->m_pixmap == NULL); M_BMPDATA->m_pixmap = pixmap; gdk_drawable_get_size(pixmap, &M_BMPDATA->m_width, &M_BMPDATA->m_height); @@ -909,7 +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; @@ -983,6 +870,8 @@ void wxBitmap::SetPixbuf(GdkPixbuf* pixbuf, int depth) if (!m_refData) m_refData = new wxBitmapRefData; + // AllocExclusive should not be needed for this internal function + wxASSERT(m_refData->GetRefCount() == 1); wxASSERT(M_BMPDATA->m_pixbuf == NULL); M_BMPDATA->m_pixbuf = pixbuf; M_BMPDATA->m_width = gdk_pixbuf_get_width(pixbuf); @@ -1038,16 +927,49 @@ bool wxBitmap::HasAlpha() const gdk_pixbuf_get_has_alpha(M_BMPDATA->m_pixbuf); } -void wxBitmap::UseAlpha() +wxObjectRefData* wxBitmap::CreateRefData() const { - GdkPixbuf* pixbuf = GetPixbuf(); - // add alpha if necessary - if (!gdk_pixbuf_get_has_alpha(pixbuf)) + return new wxBitmapRefData; +} + +wxObjectRefData* wxBitmap::CloneRefData(const wxObjectRefData* data) const +{ + const wxBitmapRefData* oldRef = wx_static_cast(const wxBitmapRefData*, data); + wxBitmapRefData* newRef = new wxBitmapRefData; + newRef->m_width = oldRef->m_width; + newRef->m_height = oldRef->m_height; + newRef->m_bpp = oldRef->m_bpp; + if (oldRef->m_pixmap != NULL) { - M_BMPDATA->m_pixbuf = NULL; - SetPixbuf(gdk_pixbuf_add_alpha(pixbuf, false, 0, 0, 0)); - g_object_unref(pixbuf); + newRef->m_pixmap = gdk_pixmap_new( + oldRef->m_pixmap, oldRef->m_width, oldRef->m_height, + // use pixmap depth, m_bpp may not match + gdk_drawable_get_depth(oldRef->m_pixmap)); + GdkGC* gc = gdk_gc_new(newRef->m_pixmap); + gdk_draw_drawable( + newRef->m_pixmap, gc, oldRef->m_pixmap, 0, 0, 0, 0, -1, -1); + g_object_unref(gc); + } + if (oldRef->m_pixbuf != NULL) + { + newRef->m_pixbuf = gdk_pixbuf_copy(oldRef->m_pixbuf); } + if (oldRef->m_mask != NULL) + { + newRef->m_mask = new wxMask; + newRef->m_mask->m_bitmap = gdk_pixmap_new( + oldRef->m_mask->m_bitmap, oldRef->m_width, oldRef->m_height, 1); + GdkGC* gc = gdk_gc_new(newRef->m_mask->m_bitmap); + gdk_draw_drawable(newRef->m_mask->m_bitmap, + gc, oldRef->m_mask->m_bitmap, 0, 0, 0, 0, -1, -1); + g_object_unref(gc); + } +#if wxUSE_PALETTE + // implement this if SetPalette is ever implemented + wxASSERT(oldRef->m_palette == NULL); +#endif + + return newRef; } //-----------------------------------------------------------------------------