michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* vim: set expandtab shiftwidth=2 tabstop=2: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "StyleInfo.h"
michael@0: 
michael@0: #include "mozilla/dom/Element.h"
michael@0: #include "nsComputedDOMStyle.h"
michael@0: #include "nsCSSProps.h"
michael@0: #include "nsIFrame.h"
michael@0: 
michael@0: using namespace mozilla;
michael@0: using namespace mozilla::a11y;
michael@0: 
michael@0: StyleInfo::StyleInfo(dom::Element* aElement, nsIPresShell* aPresShell) :
michael@0:   mElement(aElement)
michael@0: {
michael@0:   mStyleContext =
michael@0:     nsComputedDOMStyle::GetStyleContextForElementNoFlush(aElement,
michael@0:                                                          nullptr,
michael@0:                                                          aPresShell);
michael@0: }
michael@0: 
michael@0: void
michael@0: StyleInfo::Display(nsAString& aValue)
michael@0: {
michael@0:   aValue.Truncate();
michael@0:   AppendASCIItoUTF16(
michael@0:     nsCSSProps::ValueToKeyword(mStyleContext->StyleDisplay()->mDisplay,
michael@0:                                nsCSSProps::kDisplayKTable), aValue);
michael@0: }
michael@0: 
michael@0: void
michael@0: StyleInfo::TextAlign(nsAString& aValue)
michael@0: {
michael@0:   aValue.Truncate();
michael@0:   AppendASCIItoUTF16(
michael@0:     nsCSSProps::ValueToKeyword(mStyleContext->StyleText()->mTextAlign,
michael@0:                                nsCSSProps::kTextAlignKTable), aValue);
michael@0: }
michael@0: 
michael@0: void
michael@0: StyleInfo::TextIndent(nsAString& aValue)
michael@0: {
michael@0:   aValue.Truncate();
michael@0: 
michael@0:   const nsStyleCoord& styleCoord =
michael@0:     mStyleContext->StyleText()->mTextIndent;
michael@0: 
michael@0:   nscoord coordVal = 0;
michael@0:   switch (styleCoord.GetUnit()) {
michael@0:     case eStyleUnit_Coord:
michael@0:       coordVal = styleCoord.GetCoordValue();
michael@0:       break;
michael@0: 
michael@0:     case eStyleUnit_Percent:
michael@0:     {
michael@0:       nsIFrame* frame = mElement->GetPrimaryFrame();
michael@0:       nsIFrame* containerFrame = frame->GetContainingBlock();
michael@0:       nscoord percentageBase = containerFrame->GetContentRect().width;
michael@0:       coordVal = NSCoordSaturatingMultiply(percentageBase,
michael@0:                                            styleCoord.GetPercentValue());
michael@0:       break;
michael@0:     }
michael@0: 
michael@0:     case eStyleUnit_Null:
michael@0:     case eStyleUnit_Normal:
michael@0:     case eStyleUnit_Auto:
michael@0:     case eStyleUnit_None:
michael@0:     case eStyleUnit_Factor:
michael@0:     case eStyleUnit_Degree:
michael@0:     case eStyleUnit_Grad:
michael@0:     case eStyleUnit_Radian:
michael@0:     case eStyleUnit_Turn:
michael@0:     case eStyleUnit_FlexFraction:
michael@0:     case eStyleUnit_Integer:
michael@0:     case eStyleUnit_Enumerated:
michael@0:     case eStyleUnit_Calc:
michael@0:       break;
michael@0:   }
michael@0: 
michael@0:   aValue.AppendFloat(nsPresContext::AppUnitsToFloatCSSPixels(coordVal));
michael@0:   aValue.AppendLiteral("px");
michael@0: }
michael@0: 
michael@0: void
michael@0: StyleInfo::Margin(css::Side aSide, nsAString& aValue)
michael@0: {
michael@0:   aValue.Truncate();
michael@0: 
michael@0:   nscoord coordVal = mElement->GetPrimaryFrame()->GetUsedMargin().Side(aSide);
michael@0:   aValue.AppendFloat(nsPresContext::AppUnitsToFloatCSSPixels(coordVal));
michael@0:   aValue.AppendLiteral("px");
michael@0: }
michael@0: 
michael@0: void
michael@0: StyleInfo::FormatColor(const nscolor& aValue, nsString& aFormattedValue)
michael@0: {
michael@0:   // Combine the string like rgb(R, G, B) from nscolor.
michael@0:   aFormattedValue.AppendLiteral("rgb(");
michael@0:   aFormattedValue.AppendInt(NS_GET_R(aValue));
michael@0:   aFormattedValue.AppendLiteral(", ");
michael@0:   aFormattedValue.AppendInt(NS_GET_G(aValue));
michael@0:   aFormattedValue.AppendLiteral(", ");
michael@0:   aFormattedValue.AppendInt(NS_GET_B(aValue));
michael@0:   aFormattedValue.Append(')');
michael@0: }
michael@0: 
michael@0: void
michael@0: StyleInfo::FormatFontStyle(const nscoord& aValue, nsAString& aFormattedValue)
michael@0: {
michael@0:   nsCSSKeyword keyword =
michael@0:     nsCSSProps::ValueToKeywordEnum(aValue, nsCSSProps::kFontStyleKTable);
michael@0:   AppendUTF8toUTF16(nsCSSKeywords::GetStringValue(keyword), aFormattedValue);
michael@0: }
michael@0: 
michael@0: void
michael@0: StyleInfo::FormatTextDecorationStyle(uint8_t aValue, nsAString& aFormattedValue)
michael@0: {
michael@0:   nsCSSKeyword keyword =
michael@0:     nsCSSProps::ValueToKeywordEnum(aValue,
michael@0:                                    nsCSSProps::kTextDecorationStyleKTable);
michael@0:   AppendUTF8toUTF16(nsCSSKeywords::GetStringValue(keyword), aFormattedValue);
michael@0: }