The Tor Browser: gfx/src/nsRect.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: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     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 "nsRect.h"

     7 #include "mozilla/gfx/Types.h"          // for NS_SIDE_BOTTOM, etc

     8 #include "nsDeviceContext.h"            // for nsDeviceContext

     9 #include "nsString.h"               // for nsAutoString, etc

    10 #include "nsMargin.h"                   // for nsMargin

    12 static_assert((int(NS_SIDE_TOP) == 0) &&

    13               (int(NS_SIDE_RIGHT) == 1) &&

    14               (int(NS_SIDE_BOTTOM) == 2) &&

    15               (int(NS_SIDE_LEFT) == 3),

    16               "The mozilla::css::Side sequence must match the nsMargin nscoord sequence");

    18 #ifdef DEBUG

    19 // Diagnostics

    21 FILE* operator<<(FILE* out, const nsRect& rect)

    22 {

    23   nsAutoString tmp;

    25   // Output the coordinates in fractional pixels so they're easier to read

    26   tmp.AppendLiteral("{");

    27   tmp.AppendFloat(NSAppUnitsToFloatPixels(rect.x,

    28                        nsDeviceContext::AppUnitsPerCSSPixel()));

    29   tmp.AppendLiteral(", ");

    30   tmp.AppendFloat(NSAppUnitsToFloatPixels(rect.y,

    31                        nsDeviceContext::AppUnitsPerCSSPixel()));

    32   tmp.AppendLiteral(", ");

    33   tmp.AppendFloat(NSAppUnitsToFloatPixels(rect.width,

    34                        nsDeviceContext::AppUnitsPerCSSPixel()));

    35   tmp.AppendLiteral(", ");

    36   tmp.AppendFloat(NSAppUnitsToFloatPixels(rect.height,

    37                        nsDeviceContext::AppUnitsPerCSSPixel()));

    38   tmp.AppendLiteral("}");

    39   fputs(NS_LossyConvertUTF16toASCII(tmp).get(), out);

    40   return out;

    41 }

    43 #endif // DEBUG

The Tor Browser / file revision

gfx/src/nsRect.cpp@97036ab72558

gfx/src/nsRect.cpp