The Tor Browser: widget/xpwidgets/GfxInfoWebGL.cpp@44a2da4a2ab2

Replace accessor implementation with direct member state manipulation, by
request https://trac.torproject.org/projects/tor/ticket/9701#comment:32

     1 /* vim: se cin sw=2 ts=2 et : */

     2 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-

     3  *

     4  * This Source Code Form is subject to the terms of the Mozilla Public

     5  * License, v. 2.0. If a copy of the MPL was not distributed with this

     6  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     8 #include "GfxInfoWebGL.h"

    10 #include "nsServiceManagerUtils.h"

    12 #include "GLDefs.h"

    13 #include "nsIDOMWebGLRenderingContext.h"

    14 #include "nsICanvasRenderingContextInternal.h"

    16 using namespace mozilla::widget;

    18 nsresult

    19 GfxInfoWebGL::GetWebGLParameter(const nsAString& aParam, nsAString& aResult)

    20 {

    21   GLenum param;

    23   if (aParam.EqualsLiteral("vendor")) param = LOCAL_GL_VENDOR;

    24   else if (aParam.EqualsLiteral("renderer")) param = LOCAL_GL_RENDERER;

    25   else if (aParam.EqualsLiteral("version")) param = LOCAL_GL_VERSION;

    26   else if (aParam.EqualsLiteral("shading_language_version")) param = LOCAL_GL_SHADING_LANGUAGE_VERSION;

    27   else if (aParam.EqualsLiteral("extensions")) param = LOCAL_GL_EXTENSIONS;

    28   else if (aParam.EqualsLiteral("full-renderer")) param = 0;

    29   else return NS_ERROR_INVALID_ARG;

    31   nsCOMPtr<nsIDOMWebGLRenderingContext> webgl =

    32     do_CreateInstance("@mozilla.org/content/canvas-rendering-context;1?id=experimental-webgl");

    33   if (!webgl)

    34     return NS_ERROR_NOT_AVAILABLE;

    36   nsCOMPtr<nsICanvasRenderingContextInternal> webglInternal =

    37     do_QueryInterface(webgl);

    38   if (!webglInternal)

    39     return NS_ERROR_NOT_AVAILABLE;

    41   nsresult rv = webglInternal->SetDimensions(16, 16);

    42   NS_ENSURE_SUCCESS(rv, rv);

    44   if (param)

    45     return webgl->MozGetUnderlyingParamString(param, aResult);

    47   // this is the "full renderer" string, which is vendor + renderer + version

    49   nsAutoString str;

    51   rv = webgl->MozGetUnderlyingParamString(LOCAL_GL_VENDOR, str);

    52   NS_ENSURE_SUCCESS(rv, rv);

    54   aResult.Append(str);

    55   aResult.AppendLiteral(" -- ");

    57   rv = webgl->MozGetUnderlyingParamString(LOCAL_GL_RENDERER, str);

    58   NS_ENSURE_SUCCESS(rv, rv);

    60   aResult.Append(str);

    61   aResult.AppendLiteral(" -- ");

    63   rv = webgl->MozGetUnderlyingParamString(LOCAL_GL_VERSION, str);

    64   NS_ENSURE_SUCCESS(rv, rv);

    66   aResult.Append(str);

    68   return NS_OK;

    69 }

The Tor Browser / file revision