The Tor Browser: gfx/thebes/gfxQPainterSurface.cpp@97036ab72558

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

     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/. */

     6 #include <assert.h>

     8 #include "cairo-features.h"

     9 #ifdef CAIRO_HAS_QT_SURFACE

    10 #include "cairo-qt.h"

    11 #include "gfxQPainterSurface.h"

    13 gfxQPainterSurface::gfxQPainterSurface(QPainter *painter)

    14 {

    15     cairo_surface_t *csurf = cairo_qt_surface_create (painter);

    17     mPainter = painter;

    19     Init (csurf);

    20 }

    22 gfxQPainterSurface::gfxQPainterSurface(const gfxIntSize& size, gfxImageFormat format)

    23 {

    24     cairo_surface_t *csurf = cairo_qt_surface_create_with_qimage ((cairo_format_t) format,

    25                                                                         size.width,

    26                                                                         size.height);

    27     mPainter = cairo_qt_surface_get_qpainter (csurf);

    29     Init (csurf);

    30 }

    32 gfxQPainterSurface::gfxQPainterSurface(const gfxIntSize& size, gfxContentType content)

    33 {

    34     cairo_surface_t *csurf = cairo_qt_surface_create_with_qpixmap ((cairo_content_t) content,

    35                                                                          size.width,

    36                                                                          size.height);

    37     mPainter = cairo_qt_surface_get_qpainter (csurf);

    39     Init (csurf);

    40 }

    42 gfxQPainterSurface::gfxQPainterSurface(cairo_surface_t *csurf)

    43 {

    44     mPainter = cairo_qt_surface_get_qpainter (csurf);

    46     Init(csurf, true);

    47 }

    49 gfxQPainterSurface::~gfxQPainterSurface()

    50 {

    51 }

    53 QImage *

    54 gfxQPainterSurface::GetQImage()

    55 {

    56     if (!mSurfaceValid)

    57         return nullptr;

    59     return cairo_qt_surface_get_qimage(CairoSurface());

    60 }

    62 already_AddRefed<gfxImageSurface>

    63 gfxQPainterSurface::GetAsImageSurface()

    64 {

    65     if (!mSurfaceValid)

    66         return nullptr;

    68     cairo_surface_t *isurf = cairo_qt_surface_get_image(CairoSurface());

    69     if (!isurf)

    70         return nullptr;

    72     assert(cairo_surface_get_type(isurf) == CAIRO_SURFACE_TYPE_IMAGE);

    74     nsRefPtr<gfxImageSurface> asurf = new gfxImageSurface(isurf);

    75     asurf->SetOpaqueRect(GetOpaqueRect());

    76     return asurf.forget();

    77 }

    78 #endif

The Tor Browser / file revision

gfx/thebes/gfxQPainterSurface.cpp@97036ab72558

gfx/thebes/gfxQPainterSurface.cpp