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3 : /* ***** BEGIN LICENSE BLOCK *****
4 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
5 : *
6 : * The contents of this file are subject to the Mozilla Public License Version
7 : * 1.1 (the "License"); you may not use this file except in compliance with
8 : * the License. You may obtain a copy of the License at
9 : * http://www.mozilla.org/MPL/
10 : *
11 : * Software distributed under the License is distributed on an "AS IS" basis,
12 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
13 : * for the specific language governing rights and limitations under the
14 : * License.
15 : *
16 : * The Original Code is mozilla.org code.
17 : *
18 : * The Initial Developer of the Original Code is
19 : * Mozilla Foundation.
20 : * Portions created by the Initial Developer are Copyright (C) 2012
21 : * the Initial Developer. All Rights Reserved.
22 : *
23 : * Contributor(s):
24 : * Alexander Surkov <surkov.alexander@gmail.com> (original author)
25 : *
26 : * Alternatively, the contents of this file may be used under the terms of
27 : * either of the GNU General Public License Version 2 or later (the "GPL"),
28 : * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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35 : * the provisions above, a recipient may use your version of this file under
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37 : *
38 : * ***** END LICENSE BLOCK ***** */
39 :
40 : #include "StyleInfo.h"
41 :
42 : #include "mozilla/dom/Element.h"
43 : #include "nsComputedDOMStyle.h"
44 :
45 : using namespace mozilla;
46 : using namespace mozilla::a11y;
47 :
48 0 : StyleInfo::StyleInfo(dom::Element* aElement, nsIPresShell* aPresShell) :
49 0 : mElement(aElement)
50 : {
51 : mStyleContext =
52 : nsComputedDOMStyle::GetStyleContextForElementNoFlush(aElement,
53 : nsnull,
54 0 : aPresShell);
55 0 : }
56 :
57 : void
58 0 : StyleInfo::Display(nsAString& aValue)
59 : {
60 0 : aValue.Truncate();
61 : AppendASCIItoUTF16(
62 0 : nsCSSProps::ValueToKeyword(mStyleContext->GetStyleDisplay()->mDisplay,
63 0 : nsCSSProps::kDisplayKTable), aValue);
64 0 : }
65 :
66 : void
67 0 : StyleInfo::TextAlign(nsAString& aValue)
68 : {
69 0 : aValue.Truncate();
70 : AppendASCIItoUTF16(
71 0 : nsCSSProps::ValueToKeyword(mStyleContext->GetStyleText()->mTextAlign,
72 0 : nsCSSProps::kTextAlignKTable), aValue);
73 0 : }
74 :
75 : void
76 0 : StyleInfo::TextIndent(nsAString& aValue)
77 : {
78 0 : aValue.Truncate();
79 :
80 : const nsStyleCoord& styleCoord =
81 0 : mStyleContext->GetStyleText()->mTextIndent;
82 :
83 : nscoord coordVal;
84 0 : switch (styleCoord.GetUnit()) {
85 : case eStyleUnit_Coord:
86 0 : coordVal = styleCoord.GetCoordValue();
87 0 : break;
88 :
89 : case eStyleUnit_Percent:
90 : {
91 0 : nsIFrame* frame = mElement->GetPrimaryFrame();
92 0 : nsIFrame* containerFrame = frame->GetContainingBlock();
93 0 : nscoord percentageBase = containerFrame->GetContentRect().width;
94 : coordVal = NSCoordSaturatingMultiply(percentageBase,
95 0 : styleCoord.GetPercentValue());
96 0 : break;
97 : }
98 : }
99 :
100 0 : aValue.AppendFloat(nsPresContext::AppUnitsToFloatCSSPixels(coordVal));
101 0 : aValue.AppendLiteral("px");
102 0 : }
103 :
104 : void
105 0 : StyleInfo::Margin(css::Side aSide, nsAString& aValue)
106 : {
107 0 : aValue.Truncate();
108 :
109 0 : nscoord coordVal = mElement->GetPrimaryFrame()->GetUsedMargin().Side(aSide);
110 0 : aValue.AppendFloat(nsPresContext::AppUnitsToFloatCSSPixels(coordVal));
111 0 : aValue.AppendLiteral("px");
112 0 : }
113 :
114 : void
115 0 : StyleInfo::FormatColor(const nscolor& aValue, nsString& aFormattedValue)
116 : {
117 : // Combine the string like rgb(R, G, B) from nscolor.
118 0 : aFormattedValue.AppendLiteral("rgb(");
119 0 : aFormattedValue.AppendInt(NS_GET_R(aValue));
120 0 : aFormattedValue.AppendLiteral(", ");
121 0 : aFormattedValue.AppendInt(NS_GET_G(aValue));
122 0 : aFormattedValue.AppendLiteral(", ");
123 0 : aFormattedValue.AppendInt(NS_GET_B(aValue));
124 0 : aFormattedValue.Append(')');
125 0 : }
126 :
127 : void
128 0 : StyleInfo::FormatFontStyle(const nscoord& aValue, nsAString& aFormattedValue)
129 : {
130 : nsCSSKeyword keyword =
131 0 : nsCSSProps::ValueToKeywordEnum(aValue, nsCSSProps::kFontStyleKTable);
132 0 : AppendUTF8toUTF16(nsCSSKeywords::GetStringValue(keyword), aFormattedValue);
133 0 : }
134 :
135 : void
136 0 : StyleInfo::FormatTextDecorationStyle(PRUint8 aValue, nsAString& aFormattedValue)
137 : {
138 : nsCSSKeyword keyword =
139 : nsCSSProps::ValueToKeywordEnum(aValue,
140 0 : nsCSSProps::kTextDecorationStyleKTable);
141 0 : AppendUTF8toUTF16(nsCSSKeywords::GetStringValue(keyword), aFormattedValue);
142 0 : }
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