зеркало из https://github.com/mozilla/gecko-dev.git
757 строки
26 KiB
C++
757 строки
26 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#include "TextAttrs.h"
|
|
|
|
#include "Accessible-inl.h"
|
|
#include "nsAccUtils.h"
|
|
#include "nsCoreUtils.h"
|
|
#include "StyleInfo.h"
|
|
|
|
#include "gfxTextRun.h"
|
|
#include "nsFontMetrics.h"
|
|
#include "nsLayoutUtils.h"
|
|
#include "nsContainerFrame.h"
|
|
#include "nsStyleUtil.h"
|
|
#include "HyperTextAccessible.h"
|
|
#include "mozilla/AppUnits.h"
|
|
#include "mozilla/gfx/2D.h"
|
|
|
|
using namespace mozilla;
|
|
using namespace mozilla::a11y;
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// TextAttrsMgr
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
void TextAttrsMgr::GetAttributes(nsIPersistentProperties* aAttributes,
|
|
uint32_t* aStartOffset, uint32_t* aEndOffset) {
|
|
// 1. Hyper text accessible must be specified always.
|
|
// 2. Offset accessible and result hyper text offsets must be specified in
|
|
// the case of text attributes.
|
|
// 3. Offset accessible and result hyper text offsets must not be specified
|
|
// but include default text attributes flag and attributes list must be
|
|
// specified in the case of default text attributes.
|
|
MOZ_ASSERT(
|
|
mHyperTextAcc &&
|
|
((mOffsetAcc && mOffsetAccIdx != -1 && aStartOffset && aEndOffset) ||
|
|
(!mOffsetAcc && mOffsetAccIdx == -1 && !aStartOffset &&
|
|
!aEndOffset && mIncludeDefAttrs && aAttributes)),
|
|
"Wrong usage of TextAttrsMgr!");
|
|
|
|
// Embedded objects are combined into own range with empty attributes set.
|
|
if (mOffsetAcc && !mOffsetAcc->IsText()) {
|
|
for (int32_t childIdx = mOffsetAccIdx - 1; childIdx >= 0; childIdx--) {
|
|
Accessible* currAcc = mHyperTextAcc->GetChildAt(childIdx);
|
|
if (currAcc->IsText()) break;
|
|
|
|
(*aStartOffset)--;
|
|
}
|
|
|
|
uint32_t childCount = mHyperTextAcc->ChildCount();
|
|
for (uint32_t childIdx = mOffsetAccIdx + 1; childIdx < childCount;
|
|
childIdx++) {
|
|
Accessible* currAcc = mHyperTextAcc->GetChildAt(childIdx);
|
|
if (currAcc->IsText()) break;
|
|
|
|
(*aEndOffset)++;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
// Get the content and frame of the accessible. In the case of document
|
|
// accessible it's role content and root frame.
|
|
nsIContent* hyperTextElm = mHyperTextAcc->GetContent();
|
|
if (!hyperTextElm)
|
|
return; // XXX: we don't support text attrs on document with no body
|
|
|
|
nsIFrame* rootFrame = mHyperTextAcc->GetFrame();
|
|
MOZ_ASSERT(rootFrame, "No frame for accessible!");
|
|
if (!rootFrame) return;
|
|
|
|
nsIContent *offsetNode = nullptr, *offsetElm = nullptr;
|
|
nsIFrame* frame = nullptr;
|
|
if (mOffsetAcc) {
|
|
offsetNode = mOffsetAcc->GetContent();
|
|
offsetElm = nsCoreUtils::GetDOMElementFor(offsetNode);
|
|
MOZ_ASSERT(offsetElm, "No element for offset accessible!");
|
|
if (!offsetElm) return;
|
|
|
|
frame = offsetElm->GetPrimaryFrame();
|
|
}
|
|
|
|
// "language" text attribute
|
|
LangTextAttr langTextAttr(mHyperTextAcc, hyperTextElm, offsetNode);
|
|
|
|
// "aria-invalid" text attribute
|
|
InvalidTextAttr invalidTextAttr(hyperTextElm, offsetNode);
|
|
|
|
// "background-color" text attribute
|
|
BGColorTextAttr bgColorTextAttr(rootFrame, frame);
|
|
|
|
// "color" text attribute
|
|
ColorTextAttr colorTextAttr(rootFrame, frame);
|
|
|
|
// "font-family" text attribute
|
|
FontFamilyTextAttr fontFamilyTextAttr(rootFrame, frame);
|
|
|
|
// "font-size" text attribute
|
|
FontSizeTextAttr fontSizeTextAttr(rootFrame, frame);
|
|
|
|
// "font-style" text attribute
|
|
FontStyleTextAttr fontStyleTextAttr(rootFrame, frame);
|
|
|
|
// "font-weight" text attribute
|
|
FontWeightTextAttr fontWeightTextAttr(rootFrame, frame);
|
|
|
|
// "auto-generated" text attribute
|
|
AutoGeneratedTextAttr autoGenTextAttr(mHyperTextAcc, mOffsetAcc);
|
|
|
|
// "text-underline(line-through)-style(color)" text attributes
|
|
TextDecorTextAttr textDecorTextAttr(rootFrame, frame);
|
|
|
|
// "text-position" text attribute
|
|
TextPosTextAttr textPosTextAttr(rootFrame, frame);
|
|
|
|
TextAttr* attrArray[] = {
|
|
&langTextAttr, &invalidTextAttr, &bgColorTextAttr,
|
|
&colorTextAttr, &fontFamilyTextAttr, &fontSizeTextAttr,
|
|
&fontStyleTextAttr, &fontWeightTextAttr, &autoGenTextAttr,
|
|
&textDecorTextAttr, &textPosTextAttr};
|
|
|
|
// Expose text attributes if applicable.
|
|
if (aAttributes) {
|
|
for (uint32_t idx = 0; idx < ArrayLength(attrArray); idx++)
|
|
attrArray[idx]->Expose(aAttributes, mIncludeDefAttrs);
|
|
}
|
|
|
|
// Expose text attributes range where they are applied if applicable.
|
|
if (mOffsetAcc)
|
|
GetRange(attrArray, ArrayLength(attrArray), aStartOffset, aEndOffset);
|
|
}
|
|
|
|
void TextAttrsMgr::GetRange(TextAttr* aAttrArray[], uint32_t aAttrArrayLen,
|
|
uint32_t* aStartOffset, uint32_t* aEndOffset) {
|
|
// Navigate backward from anchor accessible to find start offset.
|
|
for (int32_t childIdx = mOffsetAccIdx - 1; childIdx >= 0; childIdx--) {
|
|
Accessible* currAcc = mHyperTextAcc->GetChildAt(childIdx);
|
|
|
|
// Stop on embedded accessible since embedded accessibles are combined into
|
|
// own range.
|
|
if (!currAcc->IsText()) break;
|
|
|
|
MOZ_ASSERT(nsCoreUtils::GetDOMElementFor(currAcc->GetContent()),
|
|
"Text accessible has to have an associated DOM element");
|
|
|
|
bool offsetFound = false;
|
|
for (uint32_t attrIdx = 0; attrIdx < aAttrArrayLen; attrIdx++) {
|
|
TextAttr* textAttr = aAttrArray[attrIdx];
|
|
if (!textAttr->Equal(currAcc)) {
|
|
offsetFound = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (offsetFound) break;
|
|
|
|
*(aStartOffset) -= nsAccUtils::TextLength(currAcc);
|
|
}
|
|
|
|
// Navigate forward from anchor accessible to find end offset.
|
|
uint32_t childLen = mHyperTextAcc->ChildCount();
|
|
for (uint32_t childIdx = mOffsetAccIdx + 1; childIdx < childLen; childIdx++) {
|
|
Accessible* currAcc = mHyperTextAcc->GetChildAt(childIdx);
|
|
if (!currAcc->IsText()) break;
|
|
|
|
MOZ_ASSERT(nsCoreUtils::GetDOMElementFor(currAcc->GetContent()),
|
|
"Text accessible has to have an associated DOM element");
|
|
|
|
bool offsetFound = false;
|
|
for (uint32_t attrIdx = 0; attrIdx < aAttrArrayLen; attrIdx++) {
|
|
TextAttr* textAttr = aAttrArray[attrIdx];
|
|
|
|
// Alter the end offset when text attribute changes its value and stop
|
|
// the search.
|
|
if (!textAttr->Equal(currAcc)) {
|
|
offsetFound = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (offsetFound) break;
|
|
|
|
(*aEndOffset) += nsAccUtils::TextLength(currAcc);
|
|
}
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// LangTextAttr
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
TextAttrsMgr::LangTextAttr::LangTextAttr(HyperTextAccessible* aRoot,
|
|
nsIContent* aRootElm, nsIContent* aElm)
|
|
: TTextAttr<nsString>(!aElm), mRootContent(aRootElm) {
|
|
aRoot->Language(mRootNativeValue);
|
|
mIsRootDefined = !mRootNativeValue.IsEmpty();
|
|
|
|
if (aElm) {
|
|
nsCoreUtils::GetLanguageFor(aElm, mRootContent, mNativeValue);
|
|
mIsDefined = !mNativeValue.IsEmpty();
|
|
}
|
|
}
|
|
|
|
TextAttrsMgr::LangTextAttr::~LangTextAttr() {}
|
|
|
|
bool TextAttrsMgr::LangTextAttr::GetValueFor(Accessible* aAccessible,
|
|
nsString* aValue) {
|
|
nsCoreUtils::GetLanguageFor(aAccessible->GetContent(), mRootContent, *aValue);
|
|
return !aValue->IsEmpty();
|
|
}
|
|
|
|
void TextAttrsMgr::LangTextAttr::ExposeValue(
|
|
nsIPersistentProperties* aAttributes, const nsString& aValue) {
|
|
nsAccUtils::SetAccAttr(aAttributes, nsGkAtoms::language, aValue);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// InvalidTextAttr
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
TextAttrsMgr::InvalidTextAttr::InvalidTextAttr(nsIContent* aRootElm,
|
|
nsIContent* aElm)
|
|
: TTextAttr<uint32_t>(!aElm), mRootElm(aRootElm) {
|
|
mIsRootDefined = GetValue(mRootElm, &mRootNativeValue);
|
|
if (aElm) mIsDefined = GetValue(aElm, &mNativeValue);
|
|
}
|
|
|
|
bool TextAttrsMgr::InvalidTextAttr::GetValueFor(Accessible* aAccessible,
|
|
uint32_t* aValue) {
|
|
nsIContent* elm = nsCoreUtils::GetDOMElementFor(aAccessible->GetContent());
|
|
return elm ? GetValue(elm, aValue) : false;
|
|
}
|
|
|
|
void TextAttrsMgr::InvalidTextAttr::ExposeValue(
|
|
nsIPersistentProperties* aAttributes, const uint32_t& aValue) {
|
|
switch (aValue) {
|
|
case eFalse:
|
|
nsAccUtils::SetAccAttr(aAttributes, nsGkAtoms::invalid,
|
|
NS_LITERAL_STRING("false"));
|
|
break;
|
|
|
|
case eGrammar:
|
|
nsAccUtils::SetAccAttr(aAttributes, nsGkAtoms::invalid,
|
|
NS_LITERAL_STRING("grammar"));
|
|
break;
|
|
|
|
case eSpelling:
|
|
nsAccUtils::SetAccAttr(aAttributes, nsGkAtoms::invalid,
|
|
NS_LITERAL_STRING("spelling"));
|
|
break;
|
|
|
|
case eTrue:
|
|
nsAccUtils::SetAccAttr(aAttributes, nsGkAtoms::invalid,
|
|
NS_LITERAL_STRING("true"));
|
|
break;
|
|
}
|
|
}
|
|
|
|
bool TextAttrsMgr::InvalidTextAttr::GetValue(nsIContent* aElm,
|
|
uint32_t* aValue) {
|
|
nsIContent* elm = aElm;
|
|
do {
|
|
if (nsAccUtils::HasDefinedARIAToken(elm, nsGkAtoms::aria_invalid)) {
|
|
static dom::Element::AttrValuesArray tokens[] = {
|
|
nsGkAtoms::_false, nsGkAtoms::grammar, nsGkAtoms::spelling, nullptr};
|
|
|
|
int32_t idx = elm->AsElement()->FindAttrValueIn(
|
|
kNameSpaceID_None, nsGkAtoms::aria_invalid, tokens, eCaseMatters);
|
|
switch (idx) {
|
|
case 0:
|
|
*aValue = eFalse;
|
|
return true;
|
|
case 1:
|
|
*aValue = eGrammar;
|
|
return true;
|
|
case 2:
|
|
*aValue = eSpelling;
|
|
return true;
|
|
default:
|
|
*aValue = eTrue;
|
|
return true;
|
|
}
|
|
}
|
|
} while ((elm = elm->GetParent()) && elm != mRootElm);
|
|
|
|
return false;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// BGColorTextAttr
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
TextAttrsMgr::BGColorTextAttr::BGColorTextAttr(nsIFrame* aRootFrame,
|
|
nsIFrame* aFrame)
|
|
: TTextAttr<nscolor>(!aFrame), mRootFrame(aRootFrame) {
|
|
mIsRootDefined = GetColor(mRootFrame, &mRootNativeValue);
|
|
if (aFrame) mIsDefined = GetColor(aFrame, &mNativeValue);
|
|
}
|
|
|
|
bool TextAttrsMgr::BGColorTextAttr::GetValueFor(Accessible* aAccessible,
|
|
nscolor* aValue) {
|
|
nsIContent* elm = nsCoreUtils::GetDOMElementFor(aAccessible->GetContent());
|
|
if (elm) {
|
|
nsIFrame* frame = elm->GetPrimaryFrame();
|
|
if (frame) {
|
|
return GetColor(frame, aValue);
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void TextAttrsMgr::BGColorTextAttr::ExposeValue(
|
|
nsIPersistentProperties* aAttributes, const nscolor& aValue) {
|
|
nsAutoString formattedValue;
|
|
StyleInfo::FormatColor(aValue, formattedValue);
|
|
nsAccUtils::SetAccAttr(aAttributes, nsGkAtoms::backgroundColor,
|
|
formattedValue);
|
|
}
|
|
|
|
bool TextAttrsMgr::BGColorTextAttr::GetColor(nsIFrame* aFrame,
|
|
nscolor* aColor) {
|
|
nscolor backgroundColor = aFrame->StyleBackground()->BackgroundColor(aFrame);
|
|
if (NS_GET_A(backgroundColor) > 0) {
|
|
*aColor = backgroundColor;
|
|
return true;
|
|
}
|
|
|
|
nsContainerFrame* parentFrame = aFrame->GetParent();
|
|
if (!parentFrame) {
|
|
*aColor = aFrame->PresContext()->DefaultBackgroundColor();
|
|
return true;
|
|
}
|
|
|
|
// Each frame of parents chain for the initially passed 'aFrame' has
|
|
// transparent background color. So background color isn't changed from
|
|
// 'mRootFrame' to initially passed 'aFrame'.
|
|
if (parentFrame == mRootFrame) return false;
|
|
|
|
return GetColor(parentFrame, aColor);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// ColorTextAttr
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
TextAttrsMgr::ColorTextAttr::ColorTextAttr(nsIFrame* aRootFrame,
|
|
nsIFrame* aFrame)
|
|
: TTextAttr<nscolor>(!aFrame) {
|
|
mRootNativeValue = aRootFrame->StyleText()->mColor.ToColor();
|
|
mIsRootDefined = true;
|
|
|
|
if (aFrame) {
|
|
mNativeValue = aFrame->StyleText()->mColor.ToColor();
|
|
mIsDefined = true;
|
|
}
|
|
}
|
|
|
|
bool TextAttrsMgr::ColorTextAttr::GetValueFor(Accessible* aAccessible,
|
|
nscolor* aValue) {
|
|
nsIContent* elm = nsCoreUtils::GetDOMElementFor(aAccessible->GetContent());
|
|
if (elm) {
|
|
if (nsIFrame* frame = elm->GetPrimaryFrame()) {
|
|
*aValue = frame->StyleText()->mColor.ToColor();
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void TextAttrsMgr::ColorTextAttr::ExposeValue(
|
|
nsIPersistentProperties* aAttributes, const nscolor& aValue) {
|
|
nsAutoString formattedValue;
|
|
StyleInfo::FormatColor(aValue, formattedValue);
|
|
nsAccUtils::SetAccAttr(aAttributes, nsGkAtoms::color, formattedValue);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// FontFamilyTextAttr
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
TextAttrsMgr::FontFamilyTextAttr::FontFamilyTextAttr(nsIFrame* aRootFrame,
|
|
nsIFrame* aFrame)
|
|
: TTextAttr<nsString>(!aFrame) {
|
|
mIsRootDefined = GetFontFamily(aRootFrame, mRootNativeValue);
|
|
|
|
if (aFrame) mIsDefined = GetFontFamily(aFrame, mNativeValue);
|
|
}
|
|
|
|
bool TextAttrsMgr::FontFamilyTextAttr::GetValueFor(Accessible* aAccessible,
|
|
nsString* aValue) {
|
|
nsIContent* elm = nsCoreUtils::GetDOMElementFor(aAccessible->GetContent());
|
|
if (elm) {
|
|
nsIFrame* frame = elm->GetPrimaryFrame();
|
|
if (frame) {
|
|
return GetFontFamily(frame, *aValue);
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void TextAttrsMgr::FontFamilyTextAttr::ExposeValue(
|
|
nsIPersistentProperties* aAttributes, const nsString& aValue) {
|
|
nsAccUtils::SetAccAttr(aAttributes, nsGkAtoms::font_family, aValue);
|
|
}
|
|
|
|
bool TextAttrsMgr::FontFamilyTextAttr::GetFontFamily(nsIFrame* aFrame,
|
|
nsString& aFamily) {
|
|
RefPtr<nsFontMetrics> fm =
|
|
nsLayoutUtils::GetFontMetricsForFrame(aFrame, 1.0f);
|
|
|
|
gfxFontGroup* fontGroup = fm->GetThebesFontGroup();
|
|
gfxFont* font = fontGroup->GetFirstValidFont();
|
|
gfxFontEntry* fontEntry = font->GetFontEntry();
|
|
aFamily.Append(NS_ConvertUTF8toUTF16(fontEntry->FamilyName()));
|
|
return true;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// FontSizeTextAttr
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
TextAttrsMgr::FontSizeTextAttr::FontSizeTextAttr(nsIFrame* aRootFrame,
|
|
nsIFrame* aFrame)
|
|
: TTextAttr<nscoord>(!aFrame) {
|
|
mDC = aRootFrame->PresContext()->DeviceContext();
|
|
|
|
mRootNativeValue = aRootFrame->StyleFont()->mSize;
|
|
mIsRootDefined = true;
|
|
|
|
if (aFrame) {
|
|
mNativeValue = aFrame->StyleFont()->mSize;
|
|
mIsDefined = true;
|
|
}
|
|
}
|
|
|
|
bool TextAttrsMgr::FontSizeTextAttr::GetValueFor(Accessible* aAccessible,
|
|
nscoord* aValue) {
|
|
nsIContent* el = nsCoreUtils::GetDOMElementFor(aAccessible->GetContent());
|
|
if (el) {
|
|
nsIFrame* frame = el->GetPrimaryFrame();
|
|
if (frame) {
|
|
*aValue = frame->StyleFont()->mSize;
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void TextAttrsMgr::FontSizeTextAttr::ExposeValue(
|
|
nsIPersistentProperties* aAttributes, const nscoord& aValue) {
|
|
// Convert from nscoord to pt.
|
|
//
|
|
// Note: according to IA2, "The conversion doesn't have to be exact.
|
|
// The intent is to give the user a feel for the size of the text."
|
|
//
|
|
// ATK does not specify a unit and will likely follow IA2 here.
|
|
//
|
|
// XXX todo: consider sharing this code with layout module? (bug 474621)
|
|
float px = NSAppUnitsToFloatPixels(aValue, mozilla::AppUnitsPerCSSPixel());
|
|
// Each pt is 4/3 of a CSS pixel.
|
|
int pts = NS_lround(px * 3 / 4);
|
|
|
|
nsAutoString value;
|
|
value.AppendInt(pts);
|
|
value.AppendLiteral("pt");
|
|
|
|
nsAccUtils::SetAccAttr(aAttributes, nsGkAtoms::font_size, value);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// FontStyleTextAttr
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
TextAttrsMgr::FontStyleTextAttr::FontStyleTextAttr(nsIFrame* aRootFrame,
|
|
nsIFrame* aFrame)
|
|
: TTextAttr<FontSlantStyle>(!aFrame) {
|
|
mRootNativeValue = aRootFrame->StyleFont()->mFont.style;
|
|
mIsRootDefined = true;
|
|
|
|
if (aFrame) {
|
|
mNativeValue = aFrame->StyleFont()->mFont.style;
|
|
mIsDefined = true;
|
|
}
|
|
}
|
|
|
|
bool TextAttrsMgr::FontStyleTextAttr::GetValueFor(Accessible* aAccessible,
|
|
FontSlantStyle* aValue) {
|
|
nsIContent* elm = nsCoreUtils::GetDOMElementFor(aAccessible->GetContent());
|
|
if (elm) {
|
|
nsIFrame* frame = elm->GetPrimaryFrame();
|
|
if (frame) {
|
|
*aValue = frame->StyleFont()->mFont.style;
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void TextAttrsMgr::FontStyleTextAttr::ExposeValue(
|
|
nsIPersistentProperties* aAttributes, const FontSlantStyle& aValue) {
|
|
nsAutoString string;
|
|
nsStyleUtil::AppendFontSlantStyle(aValue, string);
|
|
nsAccUtils::SetAccAttr(aAttributes, nsGkAtoms::font_style, string);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// FontWeightTextAttr
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
TextAttrsMgr::FontWeightTextAttr::FontWeightTextAttr(nsIFrame* aRootFrame,
|
|
nsIFrame* aFrame)
|
|
: TTextAttr<FontWeight>(!aFrame) {
|
|
mRootNativeValue = GetFontWeight(aRootFrame);
|
|
mIsRootDefined = true;
|
|
|
|
if (aFrame) {
|
|
mNativeValue = GetFontWeight(aFrame);
|
|
mIsDefined = true;
|
|
}
|
|
}
|
|
|
|
bool TextAttrsMgr::FontWeightTextAttr::GetValueFor(Accessible* aAccessible,
|
|
FontWeight* aValue) {
|
|
nsIContent* elm = nsCoreUtils::GetDOMElementFor(aAccessible->GetContent());
|
|
if (elm) {
|
|
nsIFrame* frame = elm->GetPrimaryFrame();
|
|
if (frame) {
|
|
*aValue = GetFontWeight(frame);
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void TextAttrsMgr::FontWeightTextAttr::ExposeValue(
|
|
nsIPersistentProperties* aAttributes, const FontWeight& aValue) {
|
|
nsAutoString formattedValue;
|
|
formattedValue.AppendFloat(aValue.ToFloat());
|
|
|
|
nsAccUtils::SetAccAttr(aAttributes, nsGkAtoms::fontWeight, formattedValue);
|
|
}
|
|
|
|
FontWeight 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).
|
|
RefPtr<nsFontMetrics> fm =
|
|
nsLayoutUtils::GetFontMetricsForFrame(aFrame, 1.0f);
|
|
|
|
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 FontWeight::Bold();
|
|
}
|
|
|
|
// 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
|
|
// range supported by the font face used, so we clamp the weight that was
|
|
// requested by style to what is actually supported by the font.
|
|
gfxFontEntry* fontEntry = font->GetFontEntry();
|
|
return fontEntry->Weight().Clamp(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->mTextDecorationStyle;
|
|
mColor = textReset->mTextDecorationColor.CalcColor(aFrame);
|
|
mLine =
|
|
textReset->mTextDecorationLine & (StyleTextDecorationLine::UNDERLINE |
|
|
StyleTextDecorationLine::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());
|
|
if (elm) {
|
|
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());
|
|
if (elm) {
|
|
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 auto& verticalAlign = aFrame->StyleDisplay()->mVerticalAlign;
|
|
if (verticalAlign.IsKeyword()) {
|
|
switch (verticalAlign.AsKeyword()) {
|
|
case StyleVerticalAlignKeyword::Baseline:
|
|
return eTextPosBaseline;
|
|
case StyleVerticalAlignKeyword::Sub:
|
|
return eTextPosSub;
|
|
case StyleVerticalAlignKeyword::Super:
|
|
return eTextPosSuper;
|
|
// No good guess for the rest, so do not expose value of text-position
|
|
// attribute.
|
|
default:
|
|
return eTextPosNone;
|
|
}
|
|
}
|
|
|
|
const auto& length = verticalAlign.AsLength();
|
|
if (length.ConvertsToPercentage()) {
|
|
float percentValue = length.ToPercentage();
|
|
return percentValue > 0
|
|
? eTextPosSuper
|
|
: (percentValue < 0 ? eTextPosSub : eTextPosBaseline);
|
|
}
|
|
|
|
if (length.ConvertsToLength()) {
|
|
nscoord coordValue = length.ToLength();
|
|
return coordValue > 0 ? eTextPosSuper
|
|
: (coordValue < 0 ? eTextPosSub : eTextPosBaseline);
|
|
}
|
|
|
|
if (const nsIContent* content = aFrame->GetContent()) {
|
|
if (content->IsHTMLElement(nsGkAtoms::sup)) return eTextPosSuper;
|
|
if (content->IsHTMLElement(nsGkAtoms::sub)) return eTextPosSub;
|
|
}
|
|
|
|
return eTextPosNone;
|
|
}
|