func ScaleSimple(p *Pixbuf, width, height int, interp InterpType) *Pixbuf {
gpixbuf := C.gdk_pixbuf_scale_simple(p.GPixbuf, C.int(width), C.int(height), C.GdkInterpType(interp))
return &Pixbuf{
GdkPixbuf: &GdkPixbuf{gpixbuf},
GObject: glib.ObjectFromNative(unsafe.Pointer(gpixbuf)),
}
}
/*
Create a new #GdkPixbuf containing a copy of @src scaled to
@dest_width x @dest_height. Leaves @src unaffected. @interp_type
should be #GDK_INTERP_NEAREST if you want maximum speed (but when
scaling down #GDK_INTERP_NEAREST is usually unusably ugly). The
default @interp_type should be #GDK_INTERP_BILINEAR which offers
reasonable quality and speed.
You can scale a sub-portion of @src by creating a sub-pixbuf
pointing into @src; see gdk_pixbuf_new_subpixbuf().
For more complicated scaling/compositing see gdk_pixbuf_scale()
and gdk_pixbuf_composite().
*/
func (self *TraitPixbuf) ScaleSimple(dest_width int, dest_height int, interp_type C.GdkInterpType) (return__ *Pixbuf) {
var __cgo__return__ *C.GdkPixbuf
__cgo__return__ = C.gdk_pixbuf_scale_simple(self.CPointer, C.int(dest_width), C.int(dest_height), interp_type)
if __cgo__return__ != nil {
return__ = NewPixbufFromCPointer(unsafe.Pointer(reflect.ValueOf(__cgo__return__).Pointer()))
}
return
}
// ScaleSimple is a wrapper around gdk_pixbuf_scale_simple().
func (v *Pixbuf) ScaleSimple(width, height int, interp InterpType) (*Pixbuf, error) {
c := C.gdk_pixbuf_scale_simple(v.Native(), C.int(width), C.int(height), C.GdkInterpType(interp))
if c == nil {
return nil, nilPtrErr
}
obj := &glib.Object{glib.ToGObject(unsafe.Pointer(c))}
p := &Pixbuf{obj}
runtime.SetFinalizer(obj, (*glib.Object).Unref)
return p, nil
}
func (i *imagelist) Append(img *image.RGBA) {
var width, height C.gint
surface := C.cairo_image_surface_create(C.CAIRO_FORMAT_ARGB32,
C.int(img.Rect.Dx()),
C.int(img.Rect.Dy()))
if status := C.cairo_surface_status(surface); status != C.CAIRO_STATUS_SUCCESS {
panic(fmt.Errorf("cairo_create_image_surface() failed in ImageList.Append(): %s\n",
C.GoString(C.cairo_status_to_string(status))))
}
C.cairo_surface_flush(surface)
toARGB(img, uintptr(unsafe.Pointer(C.cairo_image_surface_get_data(surface))),
int(C.cairo_image_surface_get_stride(surface)), false) // not NRGBA
C.cairo_surface_mark_dirty(surface)
basepixbuf := C.gdk_pixbuf_get_from_surface(surface, 0, 0, C.gint(img.Rect.Dx()), C.gint(img.Rect.Dy()))
if basepixbuf == nil {
panic(fmt.Errorf("gdk_pixbuf_get_from_surface() failed in ImageList.Append() (no reason available)"))
}
if C.gtk_icon_size_lookup(scaleTo, &width, &height) == C.FALSE {
panic(fmt.Errorf("gtk_icon_size_lookup() failed in ImageList.Append() (no reason available)"))
}
if int(width) == img.Rect.Dx() && int(height) == img.Rect.Dy() {
// just add the base pixbuf; we're good
i.list = append(i.list, basepixbuf)
C.cairo_surface_destroy(surface)
return
}
// else scale
pixbuf := C.gdk_pixbuf_scale_simple(basepixbuf, C.int(width), C.int(height), C.GDK_INTERP_NEAREST)
if pixbuf == nil {
panic(fmt.Errorf("gdk_pixbuf_scale_simple() failed in ImageList.Append() (no reason available)"))
}
i.list = append(i.list, pixbuf)
C.gdk_pixbuf_unref(basepixbuf)
C.cairo_surface_destroy(surface)
}