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31755a845c
We only have two counters enabled, just for testing, and they just count from the SVG mapped attribute code. That's not great, and they mostly complicate the next few patches. Differential Revision: https://phabricator.services.mozilla.com/D44695 --HG-- extra : moz-landing-system : lando
341 lines
12 KiB
C++
341 lines
12 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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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/*
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* methods for dealing with CSS properties and tables of the keyword
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* values they accept
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*/
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#include "nsCSSProps.h"
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#include "mozilla/ArrayUtils.h"
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#include "mozilla/Casting.h"
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#include "nsCSSKeywords.h"
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#include "nsLayoutUtils.h"
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#include "nsIWidget.h"
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#include "nsStyleConsts.h" // For system widget appearance types
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#include "mozilla/dom/Animation.h"
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#include "mozilla/dom/AnimationEffectBinding.h" // for PlaybackDirection
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#include "mozilla/LookAndFeel.h" // for system colors
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#include "nsString.h"
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#include "nsStaticNameTable.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/StaticPrefs_layout.h"
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using namespace mozilla;
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typedef nsCSSProps::KTableEntry KTableEntry;
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static int32_t gPropertyTableRefCount;
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static nsStaticCaseInsensitiveNameTable* gFontDescTable;
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static nsStaticCaseInsensitiveNameTable* gCounterDescTable;
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static nsDataHashtable<nsCStringHashKey, nsCSSPropertyID>*
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gPropertyIDLNameTable;
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static const char* const kCSSRawFontDescs[] = {
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#define CSS_FONT_DESC(name_, method_) #name_,
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#include "nsCSSFontDescList.h"
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#undef CSS_FONT_DESC
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};
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static const char* const kCSSRawCounterDescs[] = {
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#define CSS_COUNTER_DESC(name_, method_) #name_,
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#include "nsCSSCounterDescList.h"
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#undef CSS_COUNTER_DESC
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};
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static nsStaticCaseInsensitiveNameTable* CreateStaticTable(
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const char* const aRawTable[], int32_t aLength) {
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auto table = new nsStaticCaseInsensitiveNameTable(aRawTable, aLength);
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#ifdef DEBUG
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// Partially verify the entries.
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for (int32_t index = 0; index < aLength; ++index) {
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nsAutoCString temp(aRawTable[index]);
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MOZ_ASSERT(-1 == temp.FindChar('_'),
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"underscore char in case insensitive name table");
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}
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#endif
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return table;
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}
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void nsCSSProps::AddRefTable(void) {
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if (0 == gPropertyTableRefCount++) {
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MOZ_ASSERT(!gFontDescTable, "pre existing array!");
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MOZ_ASSERT(!gCounterDescTable, "pre existing array!");
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MOZ_ASSERT(!gPropertyIDLNameTable, "pre existing array!");
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gFontDescTable = CreateStaticTable(kCSSRawFontDescs, eCSSFontDesc_COUNT);
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gCounterDescTable =
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CreateStaticTable(kCSSRawCounterDescs, eCSSCounterDesc_COUNT);
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gPropertyIDLNameTable =
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new nsDataHashtable<nsCStringHashKey, nsCSSPropertyID>;
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for (nsCSSPropertyID p = nsCSSPropertyID(0);
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size_t(p) < ArrayLength(kIDLNameTable); p = nsCSSPropertyID(p + 1)) {
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if (kIDLNameTable[p]) {
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gPropertyIDLNameTable->Put(nsDependentCString(kIDLNameTable[p]), p);
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}
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}
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static bool prefObserversInited = false;
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if (!prefObserversInited) {
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prefObserversInited = true;
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for (const PropertyPref* pref = kPropertyPrefTable;
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pref->mPropID != eCSSProperty_UNKNOWN; pref++) {
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nsCString prefName;
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prefName.AssignLiteral(pref->mPref, strlen(pref->mPref));
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bool* enabled = &gPropertyEnabled[pref->mPropID];
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Preferences::AddBoolVarCache(enabled, prefName);
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}
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}
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}
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}
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#undef DEBUG_SHORTHANDS_CONTAINING
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void nsCSSProps::ReleaseTable(void) {
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if (0 == --gPropertyTableRefCount) {
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delete gFontDescTable;
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gFontDescTable = nullptr;
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delete gCounterDescTable;
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gCounterDescTable = nullptr;
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delete gPropertyIDLNameTable;
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gPropertyIDLNameTable = nullptr;
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}
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}
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/* static */
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bool nsCSSProps::IsCustomPropertyName(const nsAString& aProperty) {
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return aProperty.Length() >= CSS_CUSTOM_NAME_PREFIX_LENGTH &&
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StringBeginsWith(aProperty, NS_LITERAL_STRING("--"));
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}
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nsCSSPropertyID nsCSSProps::LookupPropertyByIDLName(
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const nsACString& aPropertyIDLName, EnabledState aEnabled) {
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nsCSSPropertyID res;
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if (!gPropertyIDLNameTable->Get(aPropertyIDLName, &res)) {
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return eCSSProperty_UNKNOWN;
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}
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MOZ_ASSERT(res < eCSSProperty_COUNT);
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if (!IsEnabled(res, aEnabled)) {
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return eCSSProperty_UNKNOWN;
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}
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return res;
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}
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nsCSSPropertyID nsCSSProps::LookupPropertyByIDLName(
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const nsAString& aPropertyIDLName, EnabledState aEnabled) {
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MOZ_ASSERT(gPropertyIDLNameTable, "no lookup table, needs addref");
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return LookupPropertyByIDLName(NS_ConvertUTF16toUTF8(aPropertyIDLName),
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aEnabled);
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}
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nsCSSFontDesc nsCSSProps::LookupFontDesc(const nsAString& aFontDesc) {
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MOZ_ASSERT(gFontDescTable, "no lookup table, needs addref");
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nsCSSFontDesc which = nsCSSFontDesc(gFontDescTable->Lookup(aFontDesc));
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if (which == eCSSFontDesc_Display &&
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!StaticPrefs::layout_css_font_display_enabled()) {
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which = eCSSFontDesc_UNKNOWN;
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}
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return which;
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}
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const nsCString& nsCSSProps::GetStringValue(nsCSSFontDesc aFontDescID) {
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MOZ_ASSERT(gFontDescTable, "no lookup table, needs addref");
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if (gFontDescTable) {
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return gFontDescTable->GetStringValue(int32_t(aFontDescID));
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} else {
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static nsDependentCString sNullStr("");
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return sNullStr;
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}
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}
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const nsCString& nsCSSProps::GetStringValue(nsCSSCounterDesc aCounterDesc) {
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MOZ_ASSERT(gCounterDescTable, "no lookup table, needs addref");
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if (gCounterDescTable) {
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return gCounterDescTable->GetStringValue(int32_t(aCounterDesc));
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} else {
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static nsDependentCString sNullStr("");
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return sNullStr;
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}
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}
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/***************************************************************************/
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const KTableEntry nsCSSProps::kCursorKTable[] = {
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// CSS 2.0
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{eCSSKeyword_auto, StyleCursorKind::Auto},
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{eCSSKeyword_crosshair, StyleCursorKind::Crosshair},
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{eCSSKeyword_default, StyleCursorKind::Default},
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{eCSSKeyword_pointer, StyleCursorKind::Pointer},
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{eCSSKeyword_move, StyleCursorKind::Move},
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{eCSSKeyword_e_resize, StyleCursorKind::EResize},
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{eCSSKeyword_ne_resize, StyleCursorKind::NeResize},
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{eCSSKeyword_nw_resize, StyleCursorKind::NwResize},
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{eCSSKeyword_n_resize, StyleCursorKind::NResize},
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{eCSSKeyword_se_resize, StyleCursorKind::SeResize},
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{eCSSKeyword_sw_resize, StyleCursorKind::SwResize},
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{eCSSKeyword_s_resize, StyleCursorKind::SResize},
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{eCSSKeyword_w_resize, StyleCursorKind::WResize},
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{eCSSKeyword_text, StyleCursorKind::Text},
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{eCSSKeyword_wait, StyleCursorKind::Wait},
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{eCSSKeyword_help, StyleCursorKind::Help},
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// CSS 2.1
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{eCSSKeyword_progress, StyleCursorKind::Progress},
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// CSS3 basic user interface module
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{eCSSKeyword_copy, StyleCursorKind::Copy},
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{eCSSKeyword_alias, StyleCursorKind::Alias},
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{eCSSKeyword_context_menu, StyleCursorKind::ContextMenu},
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{eCSSKeyword_cell, StyleCursorKind::Cell},
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{eCSSKeyword_not_allowed, StyleCursorKind::NotAllowed},
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{eCSSKeyword_col_resize, StyleCursorKind::ColResize},
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{eCSSKeyword_row_resize, StyleCursorKind::RowResize},
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{eCSSKeyword_no_drop, StyleCursorKind::NoDrop},
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{eCSSKeyword_vertical_text, StyleCursorKind::VerticalText},
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{eCSSKeyword_all_scroll, StyleCursorKind::AllScroll},
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{eCSSKeyword_nesw_resize, StyleCursorKind::NeswResize},
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{eCSSKeyword_nwse_resize, StyleCursorKind::NwseResize},
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{eCSSKeyword_ns_resize, StyleCursorKind::NsResize},
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{eCSSKeyword_ew_resize, StyleCursorKind::EwResize},
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{eCSSKeyword_none, StyleCursorKind::None},
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{eCSSKeyword_grab, StyleCursorKind::Grab},
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{eCSSKeyword_grabbing, StyleCursorKind::Grabbing},
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{eCSSKeyword_zoom_in, StyleCursorKind::ZoomIn},
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{eCSSKeyword_zoom_out, StyleCursorKind::ZoomOut},
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// -moz- prefixed vendor specific
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{eCSSKeyword__moz_grab, StyleCursorKind::Grab},
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{eCSSKeyword__moz_grabbing, StyleCursorKind::Grabbing},
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{eCSSKeyword__moz_zoom_in, StyleCursorKind::ZoomIn},
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{eCSSKeyword__moz_zoom_out, StyleCursorKind::ZoomOut},
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{eCSSKeyword_UNKNOWN, nsCSSKTableEntry::SENTINEL_VALUE}};
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const KTableEntry nsCSSProps::kFontSmoothingKTable[] = {
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{eCSSKeyword_auto, NS_FONT_SMOOTHING_AUTO},
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{eCSSKeyword_grayscale, NS_FONT_SMOOTHING_GRAYSCALE},
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{eCSSKeyword_UNKNOWN, nsCSSKTableEntry::SENTINEL_VALUE}};
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const KTableEntry nsCSSProps::kTextAlignKTable[] = {
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{eCSSKeyword_left, NS_STYLE_TEXT_ALIGN_LEFT},
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{eCSSKeyword_right, NS_STYLE_TEXT_ALIGN_RIGHT},
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{eCSSKeyword_center, NS_STYLE_TEXT_ALIGN_CENTER},
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{eCSSKeyword_justify, NS_STYLE_TEXT_ALIGN_JUSTIFY},
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{eCSSKeyword__moz_center, NS_STYLE_TEXT_ALIGN_MOZ_CENTER},
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{eCSSKeyword__moz_right, NS_STYLE_TEXT_ALIGN_MOZ_RIGHT},
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{eCSSKeyword__moz_left, NS_STYLE_TEXT_ALIGN_MOZ_LEFT},
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{eCSSKeyword_start, NS_STYLE_TEXT_ALIGN_START},
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{eCSSKeyword_end, NS_STYLE_TEXT_ALIGN_END},
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{eCSSKeyword_UNKNOWN, nsCSSKTableEntry::SENTINEL_VALUE}};
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const KTableEntry nsCSSProps::kTextDecorationStyleKTable[] = {
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{eCSSKeyword__moz_none, NS_STYLE_TEXT_DECORATION_STYLE_NONE},
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{eCSSKeyword_solid, NS_STYLE_TEXT_DECORATION_STYLE_SOLID},
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{eCSSKeyword_double, NS_STYLE_TEXT_DECORATION_STYLE_DOUBLE},
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{eCSSKeyword_dotted, NS_STYLE_TEXT_DECORATION_STYLE_DOTTED},
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{eCSSKeyword_dashed, NS_STYLE_TEXT_DECORATION_STYLE_DASHED},
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{eCSSKeyword_wavy, NS_STYLE_TEXT_DECORATION_STYLE_WAVY},
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{eCSSKeyword_UNKNOWN, nsCSSKTableEntry::SENTINEL_VALUE}};
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int32_t nsCSSProps::FindIndexOfKeyword(nsCSSKeyword aKeyword,
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const KTableEntry aTable[]) {
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if (eCSSKeyword_UNKNOWN == aKeyword) {
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// NOTE: we can have keyword tables where eCSSKeyword_UNKNOWN is used
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// not only for the sentinel, but also in the middle of the table to
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// knock out values that have been disabled by prefs, e.g. kDisplayKTable.
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// So we deal with eCSSKeyword_UNKNOWN up front to avoid returning a valid
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// index in the loop below.
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return -1;
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}
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for (int32_t i = 0;; ++i) {
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const KTableEntry& entry = aTable[i];
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if (entry.IsSentinel()) {
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break;
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}
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if (aKeyword == entry.mKeyword) {
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return i;
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}
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}
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return -1;
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}
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bool nsCSSProps::FindKeyword(nsCSSKeyword aKeyword, const KTableEntry aTable[],
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int32_t& aResult) {
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int32_t index = FindIndexOfKeyword(aKeyword, aTable);
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if (index >= 0) {
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aResult = aTable[index].mValue;
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return true;
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}
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return false;
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}
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nsCSSKeyword nsCSSProps::ValueToKeywordEnum(int32_t aValue,
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const KTableEntry aTable[]) {
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#ifdef DEBUG
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typedef decltype(aTable[0].mValue) table_value_type;
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NS_ASSERTION(table_value_type(aValue) == aValue, "Value out of range");
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#endif
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for (int32_t i = 0;; ++i) {
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const KTableEntry& entry = aTable[i];
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if (entry.IsSentinel()) {
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break;
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}
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if (aValue == entry.mValue) {
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return entry.mKeyword;
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}
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}
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return eCSSKeyword_UNKNOWN;
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}
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const nsCString& nsCSSProps::ValueToKeyword(int32_t aValue,
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const KTableEntry aTable[]) {
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nsCSSKeyword keyword = ValueToKeywordEnum(aValue, aTable);
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if (keyword == eCSSKeyword_UNKNOWN) {
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static nsDependentCString sNullStr("");
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return sNullStr;
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} else {
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return nsCSSKeywords::GetStringValue(keyword);
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}
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}
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const CSSPropFlags nsCSSProps::kFlagsTable[eCSSProperty_COUNT] = {
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#define CSS_PROP_LONGHAND(name_, id_, method_, flags_, ...) flags_,
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#define CSS_PROP_SHORTHAND(name_, id_, method_, flags_, ...) flags_,
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#include "mozilla/ServoCSSPropList.h"
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#undef CSS_PROP_SHORTHAND
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#undef CSS_PROP_LONGHAND
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};
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/* static */
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bool nsCSSProps::gPropertyEnabled[eCSSProperty_COUNT_with_aliases] = {
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// If the property has any "ENABLED_IN" flag set, it is disabled by
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// default. Note that, if a property has pref, whatever its default
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// value is, it will later be changed in nsCSSProps::AddRefTable().
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// If the property has "ENABLED_IN" flags but doesn't have a pref,
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// it is an internal property which is disabled elsewhere.
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#define IS_ENABLED_BY_DEFAULT(flags_) \
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(!((flags_) & (CSSPropFlags::EnabledMask | CSSPropFlags::Inaccessible)))
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#define CSS_PROP_LONGHAND(name_, id_, method_, flags_, ...) \
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IS_ENABLED_BY_DEFAULT(flags_),
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#define CSS_PROP_SHORTHAND(name_, id_, method_, flags_, ...) \
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IS_ENABLED_BY_DEFAULT(flags_),
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#define CSS_PROP_ALIAS(...) true,
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#include "mozilla/ServoCSSPropList.h"
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#undef CSS_PROP_ALIAS
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#undef CSS_PROP_SHORTHAND
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#undef CSS_PROP_LONGHAND
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#undef IS_ENABLED_BY_DEFAULT
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};
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#include "nsCSSPropsGenerated.inc"
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