The Tor Browser: accessible/src/base/StyleInfo.cpp@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

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

     2 /* vim: set expandtab shiftwidth=2 tabstop=2: */

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

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

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

     7 #include "StyleInfo.h"

     9 #include "mozilla/dom/Element.h"

    10 #include "nsComputedDOMStyle.h"

    11 #include "nsCSSProps.h"

    12 #include "nsIFrame.h"

    14 using namespace mozilla;

    15 using namespace mozilla::a11y;

    17 StyleInfo::StyleInfo(dom::Element* aElement, nsIPresShell* aPresShell) :

    18   mElement(aElement)

    19 {

    20   mStyleContext =

    21     nsComputedDOMStyle::GetStyleContextForElementNoFlush(aElement,

    22                                                          nullptr,

    23                                                          aPresShell);

    24 }

    26 void

    27 StyleInfo::Display(nsAString& aValue)

    28 {

    29   aValue.Truncate();

    30   AppendASCIItoUTF16(

    31     nsCSSProps::ValueToKeyword(mStyleContext->StyleDisplay()->mDisplay,

    32                                nsCSSProps::kDisplayKTable), aValue);

    33 }

    35 void

    36 StyleInfo::TextAlign(nsAString& aValue)

    37 {

    38   aValue.Truncate();

    39   AppendASCIItoUTF16(

    40     nsCSSProps::ValueToKeyword(mStyleContext->StyleText()->mTextAlign,

    41                                nsCSSProps::kTextAlignKTable), aValue);

    42 }

    44 void

    45 StyleInfo::TextIndent(nsAString& aValue)

    46 {

    47   aValue.Truncate();

    49   const nsStyleCoord& styleCoord =

    50     mStyleContext->StyleText()->mTextIndent;

    52   nscoord coordVal = 0;

    53   switch (styleCoord.GetUnit()) {

    54     case eStyleUnit_Coord:

    55       coordVal = styleCoord.GetCoordValue();

    56       break;

    58     case eStyleUnit_Percent:

    59     {

    60       nsIFrame* frame = mElement->GetPrimaryFrame();

    61       nsIFrame* containerFrame = frame->GetContainingBlock();

    62       nscoord percentageBase = containerFrame->GetContentRect().width;

    63       coordVal = NSCoordSaturatingMultiply(percentageBase,

    64                                            styleCoord.GetPercentValue());

    65       break;

    66     }

    68     case eStyleUnit_Null:

    69     case eStyleUnit_Normal:

    70     case eStyleUnit_Auto:

    71     case eStyleUnit_None:

    72     case eStyleUnit_Factor:

    73     case eStyleUnit_Degree:

    74     case eStyleUnit_Grad:

    75     case eStyleUnit_Radian:

    76     case eStyleUnit_Turn:

    77     case eStyleUnit_FlexFraction:

    78     case eStyleUnit_Integer:

    79     case eStyleUnit_Enumerated:

    80     case eStyleUnit_Calc:

    81       break;

    82   }

    84   aValue.AppendFloat(nsPresContext::AppUnitsToFloatCSSPixels(coordVal));

    85   aValue.AppendLiteral("px");

    86 }

    88 void

    89 StyleInfo::Margin(css::Side aSide, nsAString& aValue)

    90 {

    91   aValue.Truncate();

    93   nscoord coordVal = mElement->GetPrimaryFrame()->GetUsedMargin().Side(aSide);

    94   aValue.AppendFloat(nsPresContext::AppUnitsToFloatCSSPixels(coordVal));

    95   aValue.AppendLiteral("px");

    96 }

    98 void

    99 StyleInfo::FormatColor(const nscolor& aValue, nsString& aFormattedValue)

   100 {

   101   // Combine the string like rgb(R, G, B) from nscolor.

   102   aFormattedValue.AppendLiteral("rgb(");

   103   aFormattedValue.AppendInt(NS_GET_R(aValue));

   104   aFormattedValue.AppendLiteral(", ");

   105   aFormattedValue.AppendInt(NS_GET_G(aValue));

   106   aFormattedValue.AppendLiteral(", ");

   107   aFormattedValue.AppendInt(NS_GET_B(aValue));

   108   aFormattedValue.Append(')');

   109 }

   111 void

   112 StyleInfo::FormatFontStyle(const nscoord& aValue, nsAString& aFormattedValue)

   113 {

   114   nsCSSKeyword keyword =

   115     nsCSSProps::ValueToKeywordEnum(aValue, nsCSSProps::kFontStyleKTable);

   116   AppendUTF8toUTF16(nsCSSKeywords::GetStringValue(keyword), aFormattedValue);

   117 }

   119 void

   120 StyleInfo::FormatTextDecorationStyle(uint8_t aValue, nsAString& aFormattedValue)

   121 {

   122   nsCSSKeyword keyword =

   123     nsCSSProps::ValueToKeywordEnum(aValue,

   124                                    nsCSSProps::kTextDecorationStyleKTable);

   125   AppendUTF8toUTF16(nsCSSKeywords::GetStringValue(keyword), aFormattedValue);

   126 }

The Tor Browser / file revision