/*! @license
* Shaka Player
* Copyright 2016 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
goog.provide('shaka.ui.SaveVideoFrameButton');
goog.require('shaka.ads.Utils');
goog.require('shaka.ui.ContextMenu');
goog.require('shaka.ui.Controls');
goog.require('shaka.ui.Element');
goog.require('shaka.ui.Enums');
goog.require('shaka.ui.Locales');
goog.require('shaka.ui.Localization');
goog.require('shaka.ui.OverflowMenu');
goog.require('shaka.ui.Utils');
goog.require('shaka.util.Dom');
/**
* @extends {shaka.ui.Element}
* @final
* @export
*/
shaka.ui.SaveVideoFrameButton = class extends shaka.ui.Element {
/**
* @param {!HTMLElement} parent
* @param {!shaka.ui.Controls} controls
*/
constructor(parent, controls) {
super(parent, controls);
const LocIds = shaka.ui.Locales.Ids;
/** @private {!HTMLButtonElement} */
this.button_ = shaka.util.Dom.createButton();
this.button_.classList.add('shaka-save.video-frame-button');
this.button_.classList.add('shaka-tooltip');
/** @private {!HTMLElement} */
this.icon_ = shaka.util.Dom.createHTMLElement('i');
this.icon_.classList.add('material-icons-round');
this.icon_.textContent = shaka.ui.Enums.MaterialDesignIcons.DOWNLOAD;
this.button_.appendChild(this.icon_);
const label = shaka.util.Dom.createHTMLElement('label');
label.classList.add('shaka-overflow-button-label');
label.classList.add('shaka-overflow-menu-only');
this.nameSpan_ = shaka.util.Dom.createHTMLElement('span');
this.nameSpan_.textContent =
this.localization.resolve(LocIds.DOWNLOAD_VIDEO_FRAME);
label.appendChild(this.nameSpan_);
/** @private {!HTMLElement} */
this.currentState_ = shaka.util.Dom.createHTMLElement('span');
this.currentState_.classList.add('shaka-current-selection-span');
label.appendChild(this.currentState_);
this.button_.appendChild(label);
this.updateLocalizedStrings_();
this.parent.appendChild(this.button_);
this.eventManager.listen(
this.localization, shaka.ui.Localization.LOCALE_UPDATED, () => {
this.updateLocalizedStrings_();
});
this.eventManager.listen(
this.localization, shaka.ui.Localization.LOCALE_CHANGED, () => {
this.updateLocalizedStrings_();
});
this.eventManager.listen(this.button_, 'click', () => {
this.onClick_();
});
const vr = this.controls.getVR();
this.eventManager.listen(vr, 'vrstatuschanged', () => {
this.checkAvailability_();
});
this.eventManager.listen(
this.adManager, shaka.ads.Utils.AD_STARTED, () => {
this.checkAvailability_();
});
this.eventManager.listen(
this.adManager, shaka.ads.Utils.AD_STOPPED, () => {
this.checkAvailability_();
});
this.eventManager.listen(this.player, 'unloading', () => {
this.checkAvailability_();
});
this.eventManager.listen(this.player, 'loaded', () => {
this.checkAvailability_();
});
this.eventManager.listen(this.player, 'loaded', () => {
this.checkAvailability_();
});
this.eventManager.listen(this.video, 'play', () => {
this.checkAvailability_();
});
this.eventManager.listen(this.video, 'pause', () => {
this.checkAvailability_();
});
this.eventManager.listen(this.video, 'seeking', () => {
this.checkAvailability_();
});
this.checkAvailability_();
}
/** @private */
onClick_() {
const canvas = /** @type {!HTMLCanvasElement}*/ (
document.createElement('canvas'));
const context = /** @type {CanvasRenderingContext2D} */ (
canvas.getContext('2d'));
const video = /** @type {!HTMLVideoElement} */ (
this.controls.getLocalVideo());
canvas.width = video.videoWidth;
canvas.height = video.videoHeight;
context.drawImage(video, 0, 0, canvas.width, canvas.height);
const dataURL = canvas.toDataURL('image/png');
const downloadLink = /** @type {!HTMLAnchorElement}*/ (
document.createElement('a'));
downloadLink.href = dataURL;
downloadLink.download =
'videoframe_' + video.currentTime.toFixed(3) + '.png';
downloadLink.click();
}
/**
* @private
*/
checkAvailability_() {
let available = true;
if (this.controls.isPlayingVR()) {
available = false;
}
if (this.player.drmInfo() || this.player.isAudioOnly()) {
available = false;
}
if (this.ad) {
available = false;
}
if (this.video.remote && this.video.remote.state != 'disconnected') {
available = false;
}
shaka.ui.Utils.setDisplay(this.button_, available);
}
/**
* @private
*/
updateLocalizedStrings_() {
const LocIds = shaka.ui.Locales.Ids;
this.button_.ariaLabel =
this.localization.resolve(LocIds.DOWNLOAD_VIDEO_FRAME);
this.nameSpan_.textContent =
this.localization.resolve(LocIds.DOWNLOAD_VIDEO_FRAME);
}
};
/**
* @implements {shaka.extern.IUIElement.Factory}
* @final
*/
shaka.ui.SaveVideoFrameButton.Factory = class {
/** @override */
create(rootElement, controls) {
return new shaka.ui.SaveVideoFrameButton(rootElement, controls);
}
};
shaka.ui.OverflowMenu.registerElement(
'save_video_frame', new shaka.ui.SaveVideoFrameButton.Factory());
shaka.ui.ContextMenu.registerElement(
'save_video_frame', new shaka.ui.SaveVideoFrameButton.Factory());