gecko-dev/gfx/thebes/gfxTeeSurface.cpp

47 lines
1.3 KiB
C++

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "gfxTeeSurface.h"
#include "nsTArray.h"
#include "cairo-tee.h"
gfxTeeSurface::gfxTeeSurface(cairo_surface_t *csurf)
{
Init(csurf, true);
}
gfxTeeSurface::gfxTeeSurface(gfxASurface **aSurfaces, int32_t aSurfaceCount)
{
NS_ASSERTION(aSurfaceCount > 0, "Must have a least one surface");
cairo_surface_t *csurf = cairo_tee_surface_create(aSurfaces[0]->CairoSurface());
Init(csurf, false);
for (int32_t i = 1; i < aSurfaceCount; ++i) {
cairo_tee_surface_add(csurf, aSurfaces[i]->CairoSurface());
}
}
const mozilla::gfx::IntSize
gfxTeeSurface::GetSize() const
{
RefPtr<gfxASurface> master = Wrap(cairo_tee_surface_index(mSurface, 0));
return master->GetSize();
}
void
gfxTeeSurface::GetSurfaces(nsTArray<RefPtr<gfxASurface> >* aSurfaces)
{
for (int32_t i = 0; ; ++i) {
cairo_surface_t *csurf = cairo_tee_surface_index(mSurface, i);
if (cairo_surface_status(csurf))
break;
RefPtr<gfxASurface> *elem = aSurfaces->AppendElement();
if (!elem)
return;
*elem = Wrap(csurf);
}
}