зеркало из https://github.com/mozilla/gecko-dev.git
141 строка
3.5 KiB
C++
141 строка
3.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 et tw=78: */
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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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#ifndef mozilla_dom_TextTrackRegion_h
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#define mozilla_dom_TextTrackRegion_h
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#include "nsCycleCollectionParticipant.h"
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#include "nsString.h"
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#include "nsWrapperCache.h"
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#include "mozilla/ErrorResult.h"
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#include "mozilla/dom/TextTrack.h"
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#include "mozilla/dom/VTTRegionBinding.h"
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#include "mozilla/Preferences.h"
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namespace mozilla {
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namespace dom {
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class GlobalObject;
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class TextTrack;
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class TextTrackRegion final : public nsISupports, public nsWrapperCache {
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public:
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(TextTrackRegion)
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JSObject* WrapObject(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) override;
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nsISupports* GetParentObject() const { return mParent; }
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explicit TextTrackRegion(nsISupports* aGlobal);
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/** WebIDL Methods. */
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static already_AddRefed<TextTrackRegion> Constructor(
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const GlobalObject& aGlobal, ErrorResult& aRv);
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double Lines() const { return mLines; }
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void SetLines(double aLines, ErrorResult& aRv) {
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if (aLines < 0) {
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aRv.Throw(NS_ERROR_DOM_INDEX_SIZE_ERR);
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} else {
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mLines = aLines;
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}
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}
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double Width() const { return mWidth; }
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void SetWidth(double aWidth, ErrorResult& aRv) {
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if (!InvalidValue(aWidth, aRv)) {
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mWidth = aWidth;
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}
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}
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double RegionAnchorX() const { return mRegionAnchorX; }
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void SetRegionAnchorX(double aVal, ErrorResult& aRv) {
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if (!InvalidValue(aVal, aRv)) {
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mRegionAnchorX = aVal;
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}
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}
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double RegionAnchorY() const { return mRegionAnchorY; }
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void SetRegionAnchorY(double aVal, ErrorResult& aRv) {
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if (!InvalidValue(aVal, aRv)) {
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mRegionAnchorY = aVal;
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}
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}
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double ViewportAnchorX() const { return mViewportAnchorX; }
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void SetViewportAnchorX(double aVal, ErrorResult& aRv) {
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if (!InvalidValue(aVal, aRv)) {
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mViewportAnchorX = aVal;
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}
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}
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double ViewportAnchorY() const { return mViewportAnchorY; }
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void SetViewportAnchorY(double aVal, ErrorResult& aRv) {
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if (!InvalidValue(aVal, aRv)) {
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mViewportAnchorY = aVal;
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}
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}
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ScrollSetting Scroll() const { return mScroll; }
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void SetScroll(const ScrollSetting& aScroll) {
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if (aScroll == ScrollSetting::_empty || aScroll == ScrollSetting::Up) {
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mScroll = aScroll;
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}
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}
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void GetId(nsAString& aId) const { aId = mId; }
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void SetId(const nsAString& aId) { mId = aId; }
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/** end WebIDL Methods. */
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// Helper to aid copying of a given TextTrackRegion's width, lines,
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// anchor, viewport and scroll values.
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void CopyValues(TextTrackRegion& aRegion);
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// -----helpers-------
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const nsAString& Id() const { return mId; }
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private:
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~TextTrackRegion() = default;
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nsCOMPtr<nsISupports> mParent;
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nsString mId;
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double mWidth;
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long mLines;
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double mRegionAnchorX;
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double mRegionAnchorY;
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double mViewportAnchorX;
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double mViewportAnchorY;
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ScrollSetting mScroll;
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// Helper to ensure new value is in the range: 0.0% - 100.0%; throws
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// an IndexSizeError otherwise.
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inline bool InvalidValue(double aValue, ErrorResult& aRv) {
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if (aValue < 0.0 || aValue > 100.0) {
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aRv.Throw(NS_ERROR_DOM_INDEX_SIZE_ERR);
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return true;
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}
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return false;
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}
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_TextTrackRegion_h
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