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897 lines
26 KiB
C++
897 lines
26 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "TextAttrs.h"
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#include "Accessible-inl.h"
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#include "nsAccUtils.h"
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#include "nsCoreUtils.h"
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#include "StyleInfo.h"
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#include "gfxFont.h"
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#include "nsFontMetrics.h"
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#include "nsLayoutUtils.h"
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#include "nsContainerFrame.h"
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#include "HyperTextAccessible.h"
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#include "mozilla/AppUnits.h"
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#include "mozilla/gfx/2D.h"
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#if defined(MOZ_WIDGET_GTK)
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#include "gfxPlatformGtk.h" // xxx - for UseFcFontList
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#endif
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using namespace mozilla;
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using namespace mozilla::a11y;
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////////////////////////////////////////////////////////////////////////////////
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// TextAttrsMgr
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////////////////////////////////////////////////////////////////////////////////
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void
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TextAttrsMgr::GetAttributes(nsIPersistentProperties* aAttributes,
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uint32_t* aStartOffset,
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uint32_t* aEndOffset)
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{
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// 1. Hyper text accessible must be specified always.
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// 2. Offset accessible and result hyper text offsets must be specified in
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// the case of text attributes.
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// 3. Offset accessible and result hyper text offsets must not be specified
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// but include default text attributes flag and attributes list must be
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// specified in the case of default text attributes.
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NS_PRECONDITION(mHyperTextAcc &&
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((mOffsetAcc && mOffsetAccIdx != -1 &&
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aStartOffset && aEndOffset) ||
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(!mOffsetAcc && mOffsetAccIdx == -1 &&
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!aStartOffset && !aEndOffset &&
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mIncludeDefAttrs && aAttributes)),
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"Wrong usage of TextAttrsMgr!");
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// Embedded objects are combined into own range with empty attributes set.
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if (mOffsetAcc && nsAccUtils::IsEmbeddedObject(mOffsetAcc)) {
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for (int32_t childIdx = mOffsetAccIdx - 1; childIdx >= 0; childIdx--) {
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Accessible* currAcc = mHyperTextAcc->GetChildAt(childIdx);
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if (!nsAccUtils::IsEmbeddedObject(currAcc))
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break;
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(*aStartOffset)--;
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}
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uint32_t childCount = mHyperTextAcc->ChildCount();
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for (uint32_t childIdx = mOffsetAccIdx + 1; childIdx < childCount;
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childIdx++) {
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Accessible* currAcc = mHyperTextAcc->GetChildAt(childIdx);
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if (!nsAccUtils::IsEmbeddedObject(currAcc))
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break;
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(*aEndOffset)++;
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}
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return;
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}
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// Get the content and frame of the accessible. In the case of document
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// accessible it's role content and root frame.
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nsIContent* hyperTextElm = mHyperTextAcc->GetContent();
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if (!hyperTextElm)
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return; // XXX: we don't support text attrs on document with no body
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nsIFrame* rootFrame = mHyperTextAcc->GetFrame();
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NS_ASSERTION(rootFrame, "No frame for accessible!");
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if (!rootFrame)
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return;
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nsIContent *offsetNode = nullptr, *offsetElm = nullptr;
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nsIFrame *frame = nullptr;
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if (mOffsetAcc) {
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offsetNode = mOffsetAcc->GetContent();
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offsetElm = nsCoreUtils::GetDOMElementFor(offsetNode);
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NS_ASSERTION(offsetElm, "No element for offset accessible!");
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if (!offsetElm)
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return;
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frame = offsetElm->GetPrimaryFrame();
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}
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// "language" text attribute
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LangTextAttr langTextAttr(mHyperTextAcc, hyperTextElm, offsetNode);
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// "aria-invalid" text attribute
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InvalidTextAttr invalidTextAttr(hyperTextElm, offsetNode);
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// "background-color" text attribute
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BGColorTextAttr bgColorTextAttr(rootFrame, frame);
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// "color" text attribute
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ColorTextAttr colorTextAttr(rootFrame, frame);
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// "font-family" text attribute
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FontFamilyTextAttr fontFamilyTextAttr(rootFrame, frame);
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// "font-size" text attribute
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FontSizeTextAttr fontSizeTextAttr(rootFrame, frame);
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// "font-style" text attribute
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FontStyleTextAttr fontStyleTextAttr(rootFrame, frame);
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// "font-weight" text attribute
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FontWeightTextAttr fontWeightTextAttr(rootFrame, frame);
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// "auto-generated" text attribute
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AutoGeneratedTextAttr autoGenTextAttr(mHyperTextAcc, mOffsetAcc);
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// "text-underline(line-through)-style(color)" text attributes
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TextDecorTextAttr textDecorTextAttr(rootFrame, frame);
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// "text-position" text attribute
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TextPosTextAttr textPosTextAttr(rootFrame, frame);
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TextAttr* attrArray[] =
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{
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&langTextAttr,
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&invalidTextAttr,
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&bgColorTextAttr,
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&colorTextAttr,
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&fontFamilyTextAttr,
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&fontSizeTextAttr,
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&fontStyleTextAttr,
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&fontWeightTextAttr,
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&autoGenTextAttr,
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&textDecorTextAttr,
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&textPosTextAttr
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};
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// Expose text attributes if applicable.
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if (aAttributes) {
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for (uint32_t idx = 0; idx < ArrayLength(attrArray); idx++)
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attrArray[idx]->Expose(aAttributes, mIncludeDefAttrs);
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}
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// Expose text attributes range where they are applied if applicable.
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if (mOffsetAcc)
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GetRange(attrArray, ArrayLength(attrArray), aStartOffset, aEndOffset);
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}
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void
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TextAttrsMgr::GetRange(TextAttr* aAttrArray[], uint32_t aAttrArrayLen,
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uint32_t* aStartOffset, uint32_t* aEndOffset)
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{
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// Navigate backward from anchor accessible to find start offset.
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for (int32_t childIdx = mOffsetAccIdx - 1; childIdx >= 0; childIdx--) {
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Accessible* currAcc = mHyperTextAcc->GetChildAt(childIdx);
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// Stop on embedded accessible since embedded accessibles are combined into
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// own range.
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if (nsAccUtils::IsEmbeddedObject(currAcc))
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break;
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bool offsetFound = false;
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for (uint32_t attrIdx = 0; attrIdx < aAttrArrayLen; attrIdx++) {
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TextAttr* textAttr = aAttrArray[attrIdx];
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if (!textAttr->Equal(currAcc)) {
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offsetFound = true;
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break;
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}
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}
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if (offsetFound)
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break;
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*(aStartOffset) -= nsAccUtils::TextLength(currAcc);
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}
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// Navigate forward from anchor accessible to find end offset.
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uint32_t childLen = mHyperTextAcc->ChildCount();
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for (uint32_t childIdx = mOffsetAccIdx + 1; childIdx < childLen; childIdx++) {
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Accessible* currAcc = mHyperTextAcc->GetChildAt(childIdx);
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if (nsAccUtils::IsEmbeddedObject(currAcc))
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break;
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bool offsetFound = false;
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for (uint32_t attrIdx = 0; attrIdx < aAttrArrayLen; attrIdx++) {
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TextAttr* textAttr = aAttrArray[attrIdx];
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// Alter the end offset when text attribute changes its value and stop
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// the search.
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if (!textAttr->Equal(currAcc)) {
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offsetFound = true;
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break;
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}
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}
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if (offsetFound)
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break;
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(*aEndOffset) += nsAccUtils::TextLength(currAcc);
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}
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}
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////////////////////////////////////////////////////////////////////////////////
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// LangTextAttr
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////////////////////////////////////////////////////////////////////////////////
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TextAttrsMgr::LangTextAttr::
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LangTextAttr(HyperTextAccessible* aRoot,
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nsIContent* aRootElm, nsIContent* aElm) :
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TTextAttr<nsString>(!aElm), mRootContent(aRootElm)
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{
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aRoot->Language(mRootNativeValue);
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mIsRootDefined = !mRootNativeValue.IsEmpty();
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if (aElm) {
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nsCoreUtils::GetLanguageFor(aElm, mRootContent, mNativeValue);
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mIsDefined = !mNativeValue.IsEmpty();
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}
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}
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TextAttrsMgr::LangTextAttr::
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~LangTextAttr() {}
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bool
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TextAttrsMgr::LangTextAttr::
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GetValueFor(Accessible* aAccessible, nsString* aValue)
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{
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nsCoreUtils::GetLanguageFor(aAccessible->GetContent(), mRootContent, *aValue);
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return !aValue->IsEmpty();
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}
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void
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TextAttrsMgr::LangTextAttr::
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ExposeValue(nsIPersistentProperties* aAttributes, const nsString& aValue)
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{
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nsAccUtils::SetAccAttr(aAttributes, nsGkAtoms::language, aValue);
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}
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////////////////////////////////////////////////////////////////////////////////
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// InvalidTextAttr
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////////////////////////////////////////////////////////////////////////////////
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TextAttrsMgr::InvalidTextAttr::
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InvalidTextAttr(nsIContent* aRootElm, nsIContent* aElm) :
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TTextAttr<uint32_t>(!aElm), mRootElm(aRootElm)
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{
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mIsRootDefined = GetValue(mRootElm, &mRootNativeValue);
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if (aElm)
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mIsDefined = GetValue(aElm, &mNativeValue);
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}
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bool
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TextAttrsMgr::InvalidTextAttr::
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GetValueFor(Accessible* aAccessible, uint32_t* aValue)
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{
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nsIContent* elm = nsCoreUtils::GetDOMElementFor(aAccessible->GetContent());
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return elm ? GetValue(elm, aValue) : false;
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}
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void
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TextAttrsMgr::InvalidTextAttr::
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ExposeValue(nsIPersistentProperties* aAttributes, const uint32_t& aValue)
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{
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switch (aValue) {
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case eFalse:
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nsAccUtils::SetAccAttr(aAttributes, nsGkAtoms::invalid,
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NS_LITERAL_STRING("false"));
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break;
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case eGrammar:
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nsAccUtils::SetAccAttr(aAttributes, nsGkAtoms::invalid,
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NS_LITERAL_STRING("grammar"));
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break;
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case eSpelling:
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nsAccUtils::SetAccAttr(aAttributes, nsGkAtoms::invalid,
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NS_LITERAL_STRING("spelling"));
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break;
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case eTrue:
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nsAccUtils::SetAccAttr(aAttributes, nsGkAtoms::invalid,
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NS_LITERAL_STRING("true"));
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break;
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}
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}
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bool
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TextAttrsMgr::InvalidTextAttr::
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GetValue(nsIContent* aElm, uint32_t* aValue)
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{
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nsIContent* elm = aElm;
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do {
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if (nsAccUtils::HasDefinedARIAToken(elm, nsGkAtoms::aria_invalid)) {
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static nsIContent::AttrValuesArray tokens[] =
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{ &nsGkAtoms::_false, &nsGkAtoms::grammar, &nsGkAtoms::spelling,
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nullptr };
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int32_t idx = elm->FindAttrValueIn(kNameSpaceID_None,
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nsGkAtoms::aria_invalid, tokens,
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eCaseMatters);
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switch (idx) {
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case 0:
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*aValue = eFalse;
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return true;
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case 1:
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*aValue = eGrammar;
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return true;
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case 2:
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*aValue = eSpelling;
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return true;
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default:
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*aValue = eTrue;
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return true;
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}
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}
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} while ((elm = elm->GetParent()) && elm != mRootElm);
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return false;
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}
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////////////////////////////////////////////////////////////////////////////////
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// BGColorTextAttr
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////////////////////////////////////////////////////////////////////////////////
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TextAttrsMgr::BGColorTextAttr::
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BGColorTextAttr(nsIFrame* aRootFrame, nsIFrame* aFrame) :
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TTextAttr<nscolor>(!aFrame), mRootFrame(aRootFrame)
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{
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mIsRootDefined = GetColor(mRootFrame, &mRootNativeValue);
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if (aFrame)
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mIsDefined = GetColor(aFrame, &mNativeValue);
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}
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bool
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TextAttrsMgr::BGColorTextAttr::
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GetValueFor(Accessible* aAccessible, nscolor* aValue)
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{
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nsIContent* elm = nsCoreUtils::GetDOMElementFor(aAccessible->GetContent());
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nsIFrame* frame = elm->GetPrimaryFrame();
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return frame ? GetColor(frame, aValue) : false;
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}
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void
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TextAttrsMgr::BGColorTextAttr::
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ExposeValue(nsIPersistentProperties* aAttributes, const nscolor& aValue)
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{
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nsAutoString formattedValue;
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StyleInfo::FormatColor(aValue, formattedValue);
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nsAccUtils::SetAccAttr(aAttributes, nsGkAtoms::backgroundColor,
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formattedValue);
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}
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bool
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TextAttrsMgr::BGColorTextAttr::
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GetColor(nsIFrame* aFrame, nscolor* aColor)
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{
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const nsStyleBackground* styleBackground = aFrame->StyleBackground();
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if (NS_GET_A(styleBackground->mBackgroundColor) > 0) {
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*aColor = styleBackground->mBackgroundColor;
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return true;
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}
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nsContainerFrame *parentFrame = aFrame->GetParent();
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if (!parentFrame) {
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*aColor = aFrame->PresContext()->DefaultBackgroundColor();
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return true;
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}
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// Each frame of parents chain for the initially passed 'aFrame' has
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// transparent background color. So background color isn't changed from
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// 'mRootFrame' to initially passed 'aFrame'.
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if (parentFrame == mRootFrame)
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return false;
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return GetColor(parentFrame, aColor);
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}
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////////////////////////////////////////////////////////////////////////////////
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// ColorTextAttr
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////////////////////////////////////////////////////////////////////////////////
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TextAttrsMgr::ColorTextAttr::
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ColorTextAttr(nsIFrame* aRootFrame, nsIFrame* aFrame) :
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TTextAttr<nscolor>(!aFrame)
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{
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mRootNativeValue = aRootFrame->StyleColor()->mColor;
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mIsRootDefined = true;
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if (aFrame) {
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mNativeValue = aFrame->StyleColor()->mColor;
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mIsDefined = true;
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}
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}
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bool
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TextAttrsMgr::ColorTextAttr::
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GetValueFor(Accessible* aAccessible, nscolor* aValue)
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{
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nsIContent* elm = nsCoreUtils::GetDOMElementFor(aAccessible->GetContent());
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nsIFrame* frame = elm->GetPrimaryFrame();
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if (frame) {
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*aValue = frame->StyleColor()->mColor;
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return true;
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}
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return false;
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}
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void
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TextAttrsMgr::ColorTextAttr::
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ExposeValue(nsIPersistentProperties* aAttributes, const nscolor& aValue)
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{
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nsAutoString formattedValue;
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StyleInfo::FormatColor(aValue, formattedValue);
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nsAccUtils::SetAccAttr(aAttributes, nsGkAtoms::color, formattedValue);
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}
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////////////////////////////////////////////////////////////////////////////////
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// FontFamilyTextAttr
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////////////////////////////////////////////////////////////////////////////////
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TextAttrsMgr::FontFamilyTextAttr::
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FontFamilyTextAttr(nsIFrame* aRootFrame, nsIFrame* aFrame) :
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TTextAttr<nsString>(!aFrame)
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{
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mIsRootDefined = GetFontFamily(aRootFrame, mRootNativeValue);
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if (aFrame)
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mIsDefined = GetFontFamily(aFrame, mNativeValue);
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}
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bool
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TextAttrsMgr::FontFamilyTextAttr::
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GetValueFor(Accessible* aAccessible, nsString* aValue)
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{
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nsIContent* elm = nsCoreUtils::GetDOMElementFor(aAccessible->GetContent());
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nsIFrame* frame = elm->GetPrimaryFrame();
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return frame ? GetFontFamily(frame, *aValue) : false;
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}
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void
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TextAttrsMgr::FontFamilyTextAttr::
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ExposeValue(nsIPersistentProperties* aAttributes, const nsString& aValue)
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{
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nsAccUtils::SetAccAttr(aAttributes, nsGkAtoms::font_family, aValue);
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}
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bool
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TextAttrsMgr::FontFamilyTextAttr::
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GetFontFamily(nsIFrame* aFrame, nsString& aFamily)
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{
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nsRefPtr<nsFontMetrics> fm;
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nsLayoutUtils::GetFontMetricsForFrame(aFrame, getter_AddRefs(fm));
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gfxFontGroup* fontGroup = fm->GetThebesFontGroup();
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gfxFont* font = fontGroup->GetFirstValidFont();
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gfxFontEntry* fontEntry = font->GetFontEntry();
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aFamily = fontEntry->FamilyName();
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return true;
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}
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////////////////////////////////////////////////////////////////////////////////
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// FontSizeTextAttr
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////////////////////////////////////////////////////////////////////////////////
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TextAttrsMgr::FontSizeTextAttr::
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FontSizeTextAttr(nsIFrame* aRootFrame, nsIFrame* aFrame) :
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TTextAttr<nscoord>(!aFrame)
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{
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mDC = aRootFrame->PresContext()->DeviceContext();
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mRootNativeValue = aRootFrame->StyleFont()->mSize;
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mIsRootDefined = true;
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if (aFrame) {
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mNativeValue = aFrame->StyleFont()->mSize;
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mIsDefined = true;
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}
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}
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bool
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TextAttrsMgr::FontSizeTextAttr::
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GetValueFor(Accessible* aAccessible, nscoord* aValue)
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{
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nsIContent* content = nsCoreUtils::GetDOMElementFor(aAccessible->GetContent());
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nsIFrame* frame = content->GetPrimaryFrame();
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if (frame) {
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*aValue = frame->StyleFont()->mSize;
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return true;
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}
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return false;
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}
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void
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TextAttrsMgr::FontSizeTextAttr::
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ExposeValue(nsIPersistentProperties* aAttributes, const nscoord& aValue)
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{
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// Convert from nscoord to pt.
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//
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// Note: according to IA2, "The conversion doesn't have to be exact.
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// The intent is to give the user a feel for the size of the text."
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//
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// ATK does not specify a unit and will likely follow IA2 here.
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//
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// XXX todo: consider sharing this code with layout module? (bug 474621)
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float px =
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NSAppUnitsToFloatPixels(aValue, mozilla::AppUnitsPerCSSPixel());
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// Each pt is 4/3 of a CSS pixel.
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int pts = NS_lround(px*3/4);
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nsAutoString value;
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value.AppendInt(pts);
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value.AppendLiteral("pt");
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nsAccUtils::SetAccAttr(aAttributes, nsGkAtoms::font_size, value);
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}
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////////////////////////////////////////////////////////////////////////////////
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// FontStyleTextAttr
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////////////////////////////////////////////////////////////////////////////////
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|
|
|
TextAttrsMgr::FontStyleTextAttr::
|
|
FontStyleTextAttr(nsIFrame* aRootFrame, nsIFrame* aFrame) :
|
|
TTextAttr<nscoord>(!aFrame)
|
|
{
|
|
mRootNativeValue = aRootFrame->StyleFont()->mFont.style;
|
|
mIsRootDefined = true;
|
|
|
|
if (aFrame) {
|
|
mNativeValue = aFrame->StyleFont()->mFont.style;
|
|
mIsDefined = true;
|
|
}
|
|
}
|
|
|
|
bool
|
|
TextAttrsMgr::FontStyleTextAttr::
|
|
GetValueFor(Accessible* aAccessible, nscoord* aValue)
|
|
{
|
|
nsIContent* elm = nsCoreUtils::GetDOMElementFor(aAccessible->GetContent());
|
|
nsIFrame* frame = elm->GetPrimaryFrame();
|
|
if (frame) {
|
|
*aValue = frame->StyleFont()->mFont.style;
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void
|
|
TextAttrsMgr::FontStyleTextAttr::
|
|
ExposeValue(nsIPersistentProperties* aAttributes, const nscoord& aValue)
|
|
{
|
|
nsAutoString formattedValue;
|
|
StyleInfo::FormatFontStyle(aValue, formattedValue);
|
|
|
|
nsAccUtils::SetAccAttr(aAttributes, nsGkAtoms::font_style, formattedValue);
|
|
}
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// FontWeightTextAttr
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
TextAttrsMgr::FontWeightTextAttr::
|
|
FontWeightTextAttr(nsIFrame* aRootFrame, nsIFrame* aFrame) :
|
|
TTextAttr<int32_t>(!aFrame)
|
|
{
|
|
mRootNativeValue = GetFontWeight(aRootFrame);
|
|
mIsRootDefined = true;
|
|
|
|
if (aFrame) {
|
|
mNativeValue = GetFontWeight(aFrame);
|
|
mIsDefined = true;
|
|
}
|
|
}
|
|
|
|
bool
|
|
TextAttrsMgr::FontWeightTextAttr::
|
|
GetValueFor(Accessible* aAccessible, int32_t* aValue)
|
|
{
|
|
nsIContent* elm = nsCoreUtils::GetDOMElementFor(aAccessible->GetContent());
|
|
nsIFrame* frame = elm->GetPrimaryFrame();
|
|
if (frame) {
|
|
*aValue = GetFontWeight(frame);
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void
|
|
TextAttrsMgr::FontWeightTextAttr::
|
|
ExposeValue(nsIPersistentProperties* aAttributes, const int32_t& aValue)
|
|
{
|
|
nsAutoString formattedValue;
|
|
formattedValue.AppendInt(aValue);
|
|
|
|
nsAccUtils::SetAccAttr(aAttributes, nsGkAtoms::fontWeight, formattedValue);
|
|
}
|
|
|
|
int32_t
|
|
TextAttrsMgr::FontWeightTextAttr::
|
|
GetFontWeight(nsIFrame* aFrame)
|
|
{
|
|
// nsFont::width isn't suitable here because it's necessary to expose real
|
|
// value of font weight (used font might not have some font weight values).
|
|
nsRefPtr<nsFontMetrics> fm;
|
|
nsLayoutUtils::GetFontMetricsForFrame(aFrame, getter_AddRefs(fm));
|
|
|
|
gfxFontGroup *fontGroup = fm->GetThebesFontGroup();
|
|
gfxFont *font = fontGroup->GetFirstValidFont();
|
|
|
|
// When there doesn't exist a bold font in the family and so the rendering of
|
|
// a non-bold font face is changed so that the user sees what looks like a
|
|
// bold font, i.e. synthetic bolding is used. IsSyntheticBold method is only
|
|
// needed on Mac, but it is "safe" to use on all platforms. (For non-Mac
|
|
// platforms it always return false.)
|
|
if (font->IsSyntheticBold())
|
|
return 700;
|
|
|
|
bool useFontEntryWeight = true;
|
|
|
|
// Under Linux, when gfxPangoFontGroup code is used,
|
|
// font->GetStyle()->weight will give the absolute weight requested of the
|
|
// font face. The gfxPangoFontGroup code uses the gfxFontEntry constructor
|
|
// which doesn't initialize the weight field.
|
|
#if defined(MOZ_WIDGET_QT)
|
|
useFontEntryWeight = false;
|
|
#elif defined(MOZ_WIDGET_GTK)
|
|
useFontEntryWeight = gfxPlatformGtk::UseFcFontList();
|
|
#endif
|
|
|
|
if (useFontEntryWeight) {
|
|
// On Windows, font->GetStyle()->weight will give the same weight as
|
|
// fontEntry->Weight(), the weight of the first font in the font group,
|
|
// which may not be the weight of the font face used to render the
|
|
// characters. On Mac, font->GetStyle()->weight will just give the same
|
|
// number as getComputedStyle(). fontEntry->Weight() will give the weight
|
|
// of the font face used.
|
|
gfxFontEntry *fontEntry = font->GetFontEntry();
|
|
return fontEntry->Weight();
|
|
} else {
|
|
return font->GetStyle()->weight;
|
|
}
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// AutoGeneratedTextAttr
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
TextAttrsMgr::AutoGeneratedTextAttr::
|
|
AutoGeneratedTextAttr(HyperTextAccessible* aHyperTextAcc,
|
|
Accessible* aAccessible) :
|
|
TTextAttr<bool>(!aAccessible)
|
|
{
|
|
mRootNativeValue = false;
|
|
mIsRootDefined = false;
|
|
|
|
if (aAccessible)
|
|
mIsDefined = mNativeValue = (aAccessible->NativeRole() == roles::STATICTEXT);
|
|
}
|
|
|
|
bool
|
|
TextAttrsMgr::AutoGeneratedTextAttr::
|
|
GetValueFor(Accessible* aAccessible, bool* aValue)
|
|
{
|
|
return *aValue = (aAccessible->NativeRole() == roles::STATICTEXT);
|
|
}
|
|
|
|
void
|
|
TextAttrsMgr::AutoGeneratedTextAttr::
|
|
ExposeValue(nsIPersistentProperties* aAttributes, const bool& aValue)
|
|
{
|
|
nsAccUtils::SetAccAttr(aAttributes, nsGkAtoms::auto_generated,
|
|
aValue ? NS_LITERAL_STRING("true") : NS_LITERAL_STRING("false"));
|
|
}
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// TextDecorTextAttr
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
TextAttrsMgr::TextDecorValue::
|
|
TextDecorValue(nsIFrame* aFrame)
|
|
{
|
|
const nsStyleTextReset* textReset = aFrame->StyleTextReset();
|
|
mStyle = textReset->GetDecorationStyle();
|
|
|
|
bool isForegroundColor = false;
|
|
textReset->GetDecorationColor(mColor, isForegroundColor);
|
|
if (isForegroundColor)
|
|
mColor = aFrame->StyleColor()->mColor;
|
|
|
|
mLine = textReset->mTextDecorationLine &
|
|
(NS_STYLE_TEXT_DECORATION_LINE_UNDERLINE |
|
|
NS_STYLE_TEXT_DECORATION_LINE_LINE_THROUGH);
|
|
}
|
|
|
|
TextAttrsMgr::TextDecorTextAttr::
|
|
TextDecorTextAttr(nsIFrame* aRootFrame, nsIFrame* aFrame) :
|
|
TTextAttr<TextDecorValue>(!aFrame)
|
|
{
|
|
mRootNativeValue = TextDecorValue(aRootFrame);
|
|
mIsRootDefined = mRootNativeValue.IsDefined();
|
|
|
|
if (aFrame) {
|
|
mNativeValue = TextDecorValue(aFrame);
|
|
mIsDefined = mNativeValue.IsDefined();
|
|
}
|
|
}
|
|
|
|
bool
|
|
TextAttrsMgr::TextDecorTextAttr::
|
|
GetValueFor(Accessible* aAccessible, TextDecorValue* aValue)
|
|
{
|
|
nsIContent* elm = nsCoreUtils::GetDOMElementFor(aAccessible->GetContent());
|
|
nsIFrame* frame = elm->GetPrimaryFrame();
|
|
if (frame) {
|
|
*aValue = TextDecorValue(frame);
|
|
return aValue->IsDefined();
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void
|
|
TextAttrsMgr::TextDecorTextAttr::
|
|
ExposeValue(nsIPersistentProperties* aAttributes, const TextDecorValue& aValue)
|
|
{
|
|
if (aValue.IsUnderline()) {
|
|
nsAutoString formattedStyle;
|
|
StyleInfo::FormatTextDecorationStyle(aValue.Style(), formattedStyle);
|
|
nsAccUtils::SetAccAttr(aAttributes,
|
|
nsGkAtoms::textUnderlineStyle,
|
|
formattedStyle);
|
|
|
|
nsAutoString formattedColor;
|
|
StyleInfo::FormatColor(aValue.Color(), formattedColor);
|
|
nsAccUtils::SetAccAttr(aAttributes, nsGkAtoms::textUnderlineColor,
|
|
formattedColor);
|
|
return;
|
|
}
|
|
|
|
if (aValue.IsLineThrough()) {
|
|
nsAutoString formattedStyle;
|
|
StyleInfo::FormatTextDecorationStyle(aValue.Style(), formattedStyle);
|
|
nsAccUtils::SetAccAttr(aAttributes,
|
|
nsGkAtoms::textLineThroughStyle,
|
|
formattedStyle);
|
|
|
|
nsAutoString formattedColor;
|
|
StyleInfo::FormatColor(aValue.Color(), formattedColor);
|
|
nsAccUtils::SetAccAttr(aAttributes, nsGkAtoms::textLineThroughColor,
|
|
formattedColor);
|
|
}
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// TextPosTextAttr
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
TextAttrsMgr::TextPosTextAttr::
|
|
TextPosTextAttr(nsIFrame* aRootFrame, nsIFrame* aFrame) :
|
|
TTextAttr<TextPosValue>(!aFrame)
|
|
{
|
|
mRootNativeValue = GetTextPosValue(aRootFrame);
|
|
mIsRootDefined = mRootNativeValue != eTextPosNone;
|
|
|
|
if (aFrame) {
|
|
mNativeValue = GetTextPosValue(aFrame);
|
|
mIsDefined = mNativeValue != eTextPosNone;
|
|
}
|
|
}
|
|
|
|
bool
|
|
TextAttrsMgr::TextPosTextAttr::
|
|
GetValueFor(Accessible* aAccessible, TextPosValue* aValue)
|
|
{
|
|
nsIContent* elm = nsCoreUtils::GetDOMElementFor(aAccessible->GetContent());
|
|
nsIFrame* frame = elm->GetPrimaryFrame();
|
|
if (frame) {
|
|
*aValue = GetTextPosValue(frame);
|
|
return *aValue != eTextPosNone;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void
|
|
TextAttrsMgr::TextPosTextAttr::
|
|
ExposeValue(nsIPersistentProperties* aAttributes, const TextPosValue& aValue)
|
|
{
|
|
switch (aValue) {
|
|
case eTextPosBaseline:
|
|
nsAccUtils::SetAccAttr(aAttributes, nsGkAtoms::textPosition,
|
|
NS_LITERAL_STRING("baseline"));
|
|
break;
|
|
|
|
case eTextPosSub:
|
|
nsAccUtils::SetAccAttr(aAttributes, nsGkAtoms::textPosition,
|
|
NS_LITERAL_STRING("sub"));
|
|
break;
|
|
|
|
case eTextPosSuper:
|
|
nsAccUtils::SetAccAttr(aAttributes, nsGkAtoms::textPosition,
|
|
NS_LITERAL_STRING("super"));
|
|
break;
|
|
|
|
case eTextPosNone:
|
|
break;
|
|
}
|
|
}
|
|
|
|
TextAttrsMgr::TextPosValue
|
|
TextAttrsMgr::TextPosTextAttr::
|
|
GetTextPosValue(nsIFrame* aFrame) const
|
|
{
|
|
const nsStyleCoord& styleCoord = aFrame->StyleTextReset()->mVerticalAlign;
|
|
switch (styleCoord.GetUnit()) {
|
|
case eStyleUnit_Enumerated:
|
|
switch (styleCoord.GetIntValue()) {
|
|
case NS_STYLE_VERTICAL_ALIGN_BASELINE:
|
|
return eTextPosBaseline;
|
|
case NS_STYLE_VERTICAL_ALIGN_SUB:
|
|
return eTextPosSub;
|
|
case NS_STYLE_VERTICAL_ALIGN_SUPER:
|
|
return eTextPosSuper;
|
|
|
|
// No good guess for these:
|
|
// NS_STYLE_VERTICAL_ALIGN_TOP
|
|
// NS_STYLE_VERTICAL_ALIGN_TEXT_TOP
|
|
// NS_STYLE_VERTICAL_ALIGN_MIDDLE
|
|
// NS_STYLE_VERTICAL_ALIGN_TEXT_BOTTOM
|
|
// NS_STYLE_VERTICAL_ALIGN_BOTTOM
|
|
// NS_STYLE_VERTICAL_ALIGN_MIDDLE_WITH_BASELINE
|
|
// Do not expose value of text-position attribute.
|
|
|
|
default:
|
|
break;
|
|
}
|
|
return eTextPosNone;
|
|
|
|
case eStyleUnit_Percent:
|
|
{
|
|
float percentValue = styleCoord.GetPercentValue();
|
|
return percentValue > 0 ?
|
|
eTextPosSuper :
|
|
(percentValue < 0 ? eTextPosSub : eTextPosBaseline);
|
|
}
|
|
|
|
case eStyleUnit_Coord:
|
|
{
|
|
nscoord coordValue = styleCoord.GetCoordValue();
|
|
return coordValue > 0 ?
|
|
eTextPosSuper :
|
|
(coordValue < 0 ? eTextPosSub : eTextPosBaseline);
|
|
}
|
|
|
|
case eStyleUnit_Null:
|
|
case eStyleUnit_Normal:
|
|
case eStyleUnit_Auto:
|
|
case eStyleUnit_None:
|
|
case eStyleUnit_Factor:
|
|
case eStyleUnit_Degree:
|
|
case eStyleUnit_Grad:
|
|
case eStyleUnit_Radian:
|
|
case eStyleUnit_Turn:
|
|
case eStyleUnit_FlexFraction:
|
|
case eStyleUnit_Integer:
|
|
case eStyleUnit_Calc:
|
|
break;
|
|
}
|
|
|
|
const nsIContent* content = aFrame->GetContent();
|
|
if (content) {
|
|
if (content->IsHTMLElement(nsGkAtoms::sup))
|
|
return eTextPosSuper;
|
|
if (content->IsHTMLElement(nsGkAtoms::sub))
|
|
return eTextPosSub;
|
|
}
|
|
|
|
return eTextPosNone;
|
|
}
|