gecko-dev/gfx/thebes/gfxQuartzImageSurface.cpp

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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* 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 "gfxQuartzImageSurface.h"
#include "gfxImageSurface.h"
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#include "cairo-quartz-image.h"
gfxQuartzImageSurface::gfxQuartzImageSurface(gfxImageSurface *imageSurface)
{
if (imageSurface->CairoSurface() == nullptr)
return;
cairo_surface_t *surf = cairo_quartz_image_surface_create (imageSurface->CairoSurface());
Init (surf);
mSize = ComputeSize();
}
gfxQuartzImageSurface::gfxQuartzImageSurface(cairo_surface_t *csurf)
{
Init (csurf, true);
mSize = ComputeSize();
}
gfxQuartzImageSurface::~gfxQuartzImageSurface()
{
}
gfxIntSize
gfxQuartzImageSurface::ComputeSize()
{
if (mSurfaceValid) {
cairo_surface_t* isurf = cairo_quartz_image_surface_get_image(mSurface);
if (isurf) {
return gfxIntSize(cairo_image_surface_get_width(isurf),
cairo_image_surface_get_height(isurf));
}
}
// If we reach here then something went wrong. Just use the same default
// value as gfxASurface::GetSize.
return gfxIntSize(-1, -1);
}
int32_t
gfxQuartzImageSurface::KnownMemoryUsed()
{
// This surface doesn't own any memory itself, but we want to report here the
// amount of memory that the surface it wraps uses.
nsRefPtr<gfxImageSurface> imgSurface = GetAsImageSurface();
if (imgSurface)
return imgSurface->KnownMemoryUsed();
return 0;
}
already_AddRefed<gfxImageSurface>
gfxQuartzImageSurface::GetAsImageSurface()
{
if (!mSurfaceValid)
return nullptr;
cairo_surface_t *isurf = cairo_quartz_image_surface_get_image (CairoSurface());
if (!isurf) {
NS_WARNING ("Couldn't obtain an image surface from a QuartzImageSurface?!");
return nullptr;
}
nsRefPtr<gfxImageSurface> result = gfxASurface::Wrap(isurf).downcast<gfxImageSurface>();
result->SetOpaqueRect(GetOpaqueRect());
return result.forget();
}