#include "wx/rawbmp.h"
+#include "wx/gtk/private/object.h"
+
#include <gtk/gtk.h>
//-----------------------------------------------------------------------------
if (!m_bitmap) return false;
- GdkGC *gc = gdk_gc_new( m_bitmap );
+ wxGtkObject<GdkGC> gc(gdk_gc_new( m_bitmap ));
gdk_gc_set_function(gc, GDK_COPY_INVERT);
gdk_draw_drawable(m_bitmap, gc, bitmap.GetPixmap(), 0, 0, 0, 0, bitmap.GetWidth(), bitmap.GetHeight());
- g_object_unref (gc);
return true;
}
// wxBitmap
//-----------------------------------------------------------------------------
-class wxBitmapRefData: public wxObjectRefData
+class wxBitmapRefData: public wxGDIRefData
{
public:
wxBitmapRefData();
virtual ~wxBitmapRefData();
+ virtual bool IsOk() const { return m_pixmap || m_pixbuf; }
+
GdkPixmap *m_pixmap;
GdkPixbuf *m_pixbuf;
wxMask *m_mask;
//-----------------------------------------------------------------------------
-#define M_BMPDATA wx_static_cast(wxBitmapRefData*, m_refData)
+#define M_BMPDATA static_cast<wxBitmapRefData*>(m_refData)
IMPLEMENT_DYNAMIC_CLASS(wxBitmap,wxGDIObject)
wxCHECK2_MSG(bits != NULL, return, wxT("invalid bitmap data"));
GdkBitmap* mask = NULL;
- SetPixmap(gdk_pixmap_create_from_xpm_d(wxGetRootWindow()->window, &mask, NULL, wx_const_cast(char**, bits)));
+ SetPixmap(gdk_pixmap_create_from_xpm_d(wxGetRootWindow()->window, &mask, NULL, const_cast<char**>(bits)));
if (M_BMPDATA->m_pixmap != NULL && mask != NULL)
{
return false;
}
+ const GdkVisual* visual = wxTheApp->GetGdkVisual();
+
if (depth == 32)
{
SetPixbuf(gdk_pixbuf_new(GDK_COLORSPACE_RGB, true, 8, width, height), 32);
+ // must initialize alpha, otherwise GetPixmap()
+ // will create a mask out of garbage
+ gdk_pixbuf_fill(M_BMPDATA->m_pixbuf, 0x000000ff);
+ } else
+ if (depth == 24)
+ {
+ if (visual->depth == depth)
+ SetPixmap(gdk_pixmap_new(wxGetRootWindow()->window, width, height, depth));
+ else
+ SetPixbuf(gdk_pixbuf_new(GDK_COLORSPACE_RGB, false, 8, width, height), 24);
}
else
{
if (depth != 1)
{
- const GdkVisual* visual = wxTheApp->GetGdkVisual();
if (depth == -1)
depth = visual->depth;
-
- wxCHECK_MSG(depth == visual->depth, false, wxT("invalid bitmap depth"));
}
-
SetPixmap(gdk_pixmap_new(wxGetRootWindow()->window, width, height, depth));
}
return Ok();
}
-wxBitmap wxBitmap::Rescale(int clipx, int clipy, int clipwidth, int clipheight, int newx, int newy) const
+wxBitmap wxBitmap::Rescale(int clipx, int clipy, int clipwidth, int clipheight,
+ int width, int height) const
{
wxBitmap bmp;
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);
+ width = wxMax(width, 1);
+ height = wxMax(height, 1);
- wxCHECK_MSG(img, bmp, wxT("couldn't create image"));
+ const double scale_x = double(width) / clipwidth;
+ const double scale_y = double(height) / clipheight;
- GdkGC *gc = NULL;
- GdkPixmap *dstpix = NULL;
- char *dst = NULL;
- long dstbyteperline = 0;
+ // Converting to pixbuf, scaling with gdk_pixbuf_scale, and converting
+ // back, is faster than scaling pixmap ourselves.
- 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;
- }
-
- g_object_unref (img);
- if (gc) g_object_unref (gc);
-
- 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*scale_x, -clipy*scale_y, 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();
else
{
SetPixmap(gdk_pixmap_new(wxGetRootWindow()->window, w, h, depth));
- GdkGC* gc = gdk_gc_new(M_BMPDATA->m_pixmap);
+ wxGtkObject<GdkGC> gc(gdk_gc_new(M_BMPDATA->m_pixmap));
gdk_draw_rgb_image(
M_BMPDATA->m_pixmap, gc,
0, 0, w, h,
GDK_RGB_DITHER_NONE, image.GetData(), w * 3);
- g_object_unref(gc);
}
const wxByte* alpha = image.GetAlpha();
{
// mono bitmaps are inverted, i.e. 0 is white
pixmap_invert = gdk_pixmap_new(pixmap, w, h, 1);
- GdkGC* gc = gdk_gc_new(pixmap_invert);
+ wxGtkObject<GdkGC> gc(gdk_gc_new(pixmap_invert));
gdk_gc_set_function(gc, GDK_COPY_INVERT);
gdk_draw_drawable(pixmap_invert, gc, pixmap, 0, 0, 0, 0, w, h);
- g_object_unref(gc);
pixmap = pixmap_invert;
}
// create a pixbuf which shares data with the wxImage
return image;
}
-bool wxBitmap::operator == ( const wxBitmap& bmp ) const
-{
- return m_refData == bmp.m_refData;
-}
-
-bool wxBitmap::Ok() const
-{
- return (m_refData != NULL) &&
- (
- M_BMPDATA->m_pixbuf ||
- M_BMPDATA->m_pixmap
- );
-}
+#endif // wxUSE_IMAGE
int wxBitmap::GetHeight() const
{
{
wxCHECK_RET( Ok(), wxT("invalid bitmap") );
+ AllocExclusive();
delete M_BMPDATA->m_mask;
M_BMPDATA->m_mask = mask;
}
else
{
ret.Create(rect.width, rect.height, M_BMPDATA->m_bpp);
- GdkGC *gc = gdk_gc_new( ret.GetPixmap() );
+ wxGtkObject<GdkGC> gc(gdk_gc_new( ret.GetPixmap() ));
gdk_draw_drawable( ret.GetPixmap(), gc, GetPixmap(), rect.x, rect.y, 0, 0, rect.width, rect.height );
- g_object_unref (gc);
}
// make mask, unless there is already alpha
if (GetMask() && !HasAlpha())
wxMask *mask = new wxMask;
mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, rect.width, rect.height, 1 );
- GdkGC *gc = gdk_gc_new( mask->m_bitmap );
+ wxGtkObject<GdkGC> gc(gdk_gc_new( mask->m_bitmap ));
gdk_draw_drawable(mask->m_bitmap, gc, M_BMPDATA->m_mask->m_bitmap, rect.x, rect.y, 0, 0, rect.width, rect.height);
- g_object_unref (gc);
ret.SetMask( mask );
}
{
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
+ wxUnusedVar(name);
+ wxUnusedVar(type);
+
+ return false;
+#endif // wxUSE_IMAGE
}
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();
}
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;
}
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);
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;
if (M_BMPDATA->m_pixbuf == NULL)
{
+
int width = GetWidth();
int height = GetHeight();
M_BMPDATA->m_pixbuf = pixbuf;
gdk_pixbuf_get_from_drawable(pixbuf, M_BMPDATA->m_pixmap, NULL,
0, 0, 0, 0, width, height);
-
// apply the mask to created pixbuf:
if (M_BMPDATA->m_pixbuf && M_BMPDATA->m_mask)
{
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);
void* bits = NULL;
GdkPixbuf *pixbuf = GetPixbuf();
const bool hasAlpha = HasAlpha();
+
// allow access if bpp is valid and matches existence of alpha
- if (pixbuf != NULL && (
- bpp == 24 && !hasAlpha ||
- bpp == 32 && hasAlpha))
+ if ( pixbuf && ((bpp == 24 && !hasAlpha) || (bpp == 32 && hasAlpha)) )
{
data.m_height = gdk_pixbuf_get_height( pixbuf );
data.m_width = gdk_pixbuf_get_width( pixbuf );
gdk_pixbuf_get_has_alpha(M_BMPDATA->m_pixbuf);
}
-void wxBitmap::UseAlpha()
+wxGDIRefData* wxBitmap::CreateGDIRefData() const
{
- GdkPixbuf* pixbuf = GetPixbuf();
- // add alpha if necessary
- if (!gdk_pixbuf_get_has_alpha(pixbuf))
- {
- M_BMPDATA->m_pixbuf = NULL;
- SetPixbuf(gdk_pixbuf_add_alpha(pixbuf, false, 0, 0, 0));
- g_object_unref(pixbuf);
- }
+ return new wxBitmapRefData;
}
-//-----------------------------------------------------------------------------
-// wxBitmapHandler
-//-----------------------------------------------------------------------------
+wxGDIRefData* wxBitmap::CloneGDIRefData(const wxGDIRefData* data) const
+{
+ const wxBitmapRefData* oldRef = 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)
+ {
+ 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));
+ wxGtkObject<GdkGC> gc(gdk_gc_new(newRef->m_pixmap));
+ gdk_draw_drawable(
+ newRef->m_pixmap, gc, oldRef->m_pixmap, 0, 0, 0, 0, -1, -1);
+ }
+ 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);
+ wxGtkObject<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);
+ }
+#if wxUSE_PALETTE
+ // implement this if SetPalette is ever implemented
+ wxASSERT(oldRef->m_palette == NULL);
+#endif
-IMPLEMENT_ABSTRACT_CLASS(wxBitmapHandler, wxBitmapHandlerBase)
+ return newRef;
+}
/* static */ void wxBitmap::InitStandardHandlers()
{
projects / wxWidgets.git / blobdiff