gfx/thebes/gfxTeeSurface.cpp

   1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
   2  * This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "gfxTeeSurface.h"
   7
   8 #include "cairo-tee.h"
   9
  10 gfxTeeSurface::gfxTeeSurface(cairo_surface_t *csurf)
  11 {
  12     Init(csurf, true);
  13 }
  14
  15 gfxTeeSurface::gfxTeeSurface(gfxASurface **aSurfaces, int32_t aSurfaceCount)
  16 {
  17     NS_ASSERTION(aSurfaceCount > 0, "Must have a least one surface");
  18     cairo_surface_t *csurf = cairo_tee_surface_create(aSurfaces[0]->CairoSurface());
  19     Init(csurf, false);
  20
  21     for (int32_t i = 1; i < aSurfaceCount; ++i) {
  22         cairo_tee_surface_add(csurf, aSurfaces[i]->CairoSurface());
  23     }
  24 }
  25
  26 const gfxIntSize
  27 gfxTeeSurface::GetSize() const
  28 {
  29     nsRefPtr<gfxASurface> master = Wrap(cairo_tee_surface_index(mSurface, 0));
  30     return master->GetSize();
  31 }
  32
  33 void
  34 gfxTeeSurface::GetSurfaces(nsTArray<nsRefPtr<gfxASurface> >* aSurfaces)
  35 {
  36     for (int32_t i = 0; ; ++i) {
  37         cairo_surface_t *csurf = cairo_tee_surface_index(mSurface, i);
  38         if (cairo_surface_status(csurf))
  39             break;
  40         nsRefPtr<gfxASurface> *elem = aSurfaces->AppendElement();
  41         if (!elem)
  42             return;
  43         *elem = Wrap(csurf);
  44     }
  45 }