Bilibili-Evolved/touch/touch-player.js
2018-07-16 18:58:17 +08:00

487 lines
18 KiB
JavaScript

const getPosition = element =>
{
let x = 0;
let y = 0;
while (element && !isNaN(element.offsetLeft) && !isNaN(element.offsetTop))
{
x += element.offsetLeft - element.scrollLeft;
y += element.offsetTop - element.scrollTop;
element = element.offsetParent;
}
return { x: x, y: y };
};
class Swiper
{
constructor(element)
{
this.action = new SwipeAction(element);
this.onTouchStart = undefined;
this.onTouchEnd = undefined;
this._direction = null;
element.addEventListener("touchstart", e =>
{
this._xDown = e.touches[0].clientX;
this._yDown = e.touches[0].clientY;
if (this.onTouchStart)
{
this.onTouchStart(e);
}
});
element.addEventListener("touchmove", e =>
{
if (!this._xDown || !this._yDown)
{
return;
}
const xUp = e.touches[0].clientX;
const yUp = e.touches[0].clientY;
const elementPosition = getPosition(element);
const position = {
x: (e.touches[0].pageX - elementPosition.x) / element.clientWidth,
y: (e.touches[0].pageY - elementPosition.y) / element.clientHeight,
width: element.clientWidth,
height: element.clientHeight
};
const xDiff = this._xDown - xUp;
const yDiff = this._yDown - yUp;
if (!this._direction)
{
let direction = "";
if (Math.abs(xDiff) > Math.abs(yDiff))
{
direction = "horizontal";
}
else
{
direction = "vertical";
}
this._direction = direction;
e.preventDefault();
}
else
{
if (this._direction === "vertical")
{
this.action.startAction(this._direction, yDiff, position);
}
else if (this._direction === "horizontal")
{
this.action.startAction(this._direction, -xDiff, position);
}
e.preventDefault();
}
});
element.addEventListener("touchend", e =>
{
this._xDown = null;
this._yDown = null;
this._direction = null;
if (this.onTouchEnd)
{
this.onTouchEnd(e);
}
});
}
}
class SwipeAction
{
constructor(element)
{
this.lowSpeedForward = undefined;
this.lowSpeedBackward = undefined;
this.mediumSpeedForward = undefined;
this.mediumSpeedBackward = undefined;
this.highSpeedForward = undefined;
this.highSpeedBackward = undefined;
this.lowVolumeUp = undefined;
this.lowVolumeDown = undefined;
this.mediumVolumeUp = undefined;
this.mediumVolumeDown = undefined;
this.highVolumeUp = undefined;
this.highVolumeDown = undefined;
this.speedCancel = undefined;
this.volumeCancel = undefined;
this.minSwipeDistance = 20;
this.onActionStart = undefined;
this.onActionEnd = undefined;
this._element = element;
this._touchStart = false;
this._startPosition = null;
this._lastAction = null;
element.addEventListener("touchstart", () =>
{
this._touchStart = true;
});
element.addEventListener("touchend", () =>
{
this._startPosition = null;
this.onActionEnd && this.onActionEnd(this._lastAction);
this._lastAction = null;
});
}
startAction(direction, distance, position)
{
if (this._touchStart)
{
this.onActionStart && this.onActionStart();
this._startPosition = position;
this._touchStart = false;
}
if (direction === "vertical")
{
if (Math.abs(distance) < this.minSwipeDistance)
{
this.volumeCancel && this.volumeCancel();
this._lastAction = null;
}
else
{
let volumeFactor = 0;
let upHandler = undefined;
let downHandler = undefined;
if (this._startPosition.x < 1 / 3)
{
volumeFactor = 0.4;
upHandler = this.lowVolumeUp;
downHandler = this.lowVolumeDown;
}
else if (this._startPosition.x >= 1 / 3 && this._startPosition.x <= 2 / 3)
{
volumeFactor = 1;
upHandler = this.mediumVolumeUp;
downHandler = this.mediumVolumeDown;
}
else
{
volumeFactor = 2;
upHandler = this.highVolumeUp;
downHandler = this.highVolumeDown;
}
if (distance > 0)
{
const volumeChange = Math.round(
volumeFactor * 100 * (distance - this.minSwipeDistance) / (1.5 * position.height)
);
upHandler && upHandler(volumeChange);
this._lastAction = {
type: "volume",
volume: volumeChange
};
}
else
{
const volumeChange = Math.round(
volumeFactor * 100 * (distance + this.minSwipeDistance) / (1.5 * position.height)
);
downHandler && downHandler(volumeChange);
this._lastAction = {
type: "volume",
volume: volumeChange
};
}
}
}
else if (direction === "horizontal")
{
if (position.y < 1 / 3 && (position.x < 0.1 || position.x > 0.9) ||
Math.abs(distance) < this.minSwipeDistance)
{
this.speedCancel && this.speedCancel();
this._lastAction = null;
}
else
{
let speedFactor = 0;
let forwardHandler = undefined;
let backwardHandler = undefined;
if (this._startPosition.y < 1 / 3)
{
speedFactor = 0.05;
forwardHandler = this.lowSpeedForward;
backwardHandler = this.lowSpeedBackward;
}
else if (this._startPosition.y >= 1 / 3 && this._startPosition.y <= 2 / 3)
{
speedFactor = 0.2;
forwardHandler = this.mediumSpeedForward;
backwardHandler = this.mediumSpeedBackward;
}
else
{
speedFactor = 1;
forwardHandler = this.highSpeedForward;
backwardHandler = this.highSpeedBackward;
}
if (distance > 0)
{
const seconds = (distance - this.minSwipeDistance) * speedFactor;
forwardHandler && forwardHandler(seconds);
this._lastAction = {
type: "playback",
seconds: seconds
};
}
else
{
const seconds = (distance + this.minSwipeDistance) * speedFactor;
backwardHandler && backwardHandler(seconds);
this._lastAction = {
type: "playback",
seconds: seconds
};
}
}
}
}
}
const touchVideoPlayer = () =>
{
waitForQuery()(
() => $(".bilibili-player-video-web-fullscreen"),
it => it.length > 0,
fullscreenButton =>
{
if (!fullscreenButton.hasClass("bilibili-player-video-btn") &&
$(".bilibili-player-video-btn-fullscreen").data("events"))
{
const clickHandler = getEventHandler(
$(".bilibili-player-video-btn-fullscreen"), "click");
fullscreenButton
.detach()
.insertAfter(".bilibili-player-video-btn-widescreen")
.addClass("bilibili-player-video-btn")
.on("click", clickHandler);
}
}
);
waitForQuery()(
() => $(".bilibili-player-iconfont,.bilibili-player-video-quality-menu"),
it => it.length > 0,
icons => icons.unbind("click")
);
waitForQuery()(
() => $(".bilibili-player-video"),
it => it.length > 0 && $("video").length > 0,
player =>
{
if ($(".touch-video-box").length === 0)
{
$(".bilibili-player-video-subtitle").before(`<div class='touch-video-box-wrapper'>
<div class='touch-video-box'>
<div class='touch-video-info'></div>
</div>
</div>`);
const swiper = new Swiper(player.get(0));
const text = document.getElementsByClassName("touch-video-info")[0];
const box = document.getElementsByClassName("touch-video-box")[0];
swiper.action.speedCancel = () =>
{
text.innerHTML = `松开手指,取消进退`;
};
swiper.action.volumeCancel = () =>
{
text.innerHTML = `松开手指,取消调整`;
};
swiper.action.onActionStart = () =>
{
box.style.display = "flex";
text.innerHTML = "";
};
const fixed = (number, precision = 1) =>
{
const str = number.toString();
const index = str.indexOf(".");
if (index !== -1)
{
if (str.length - index > precision + 1)
{
return str.substring(0, index + precision + 1);
}
else
{
return str;
}
}
else
{
return str + ".0";
}
};
const secondsToTime = sec =>
{
sec = Math.abs(sec);
const hours = Math.floor(sec / 3600);
const minutes = Math.floor((sec - hours * 3600) / 60);
const seconds = sec - hours * 3600 - minutes * 60;
let result = fixed(seconds) + "秒";
if (minutes > 0)
{
result = minutes + "分" + result;
}
if (hours > 0)
{
result = hours + "小时" + result;
}
return result;
};
const secondsToHms = sec =>
{
sec = Math.abs(sec);
const hours = Math.floor(sec / 3600);
const minutes = Math.floor((sec - hours * 3600) / 60);
const seconds = sec - hours * 3600 - minutes * 60;
let result = (seconds < 10 ? "0" : "") + fixed(seconds);
result = (minutes < 10 ? "0" : "") + minutes + ":" + result;
result = (hours < 10 ? "0" : "") + hours + ":" + result;
return result;
};
const video = $("video");
const videoDuration = video.prop("duration");
//const videoshot = new VideoShot(videoDuration);
const speedChange = speed =>
{
return sec =>
{
const current = video.prop("currentTime");
let info = `<div class='touch-row'><span class='touch-speed'>${speed}速</span><span class='touch-info'>进度: ${sec > 0 ? "+" : "-"}`;
const commonInfoPart = `</span></div><div class='touch-row'><div class='videoshot'></div><span class='touch-result'>`;
const finalTime = current + sec;
if (finalTime > videoDuration)
{
info += `${secondsToTime(videoDuration - current)}${commonInfoPart}${secondsToHms(current)}${secondsToHms(videoDuration)} (100%)`;
}
else if (finalTime < 0)
{
info += `${secondsToTime(current)}${commonInfoPart}${secondsToHms(current)}${secondsToHms(0)} (0%)`;
}
else
{
info += `${secondsToTime(sec)}${commonInfoPart}${secondsToHms(current)}${secondsToHms(finalTime)} (${fixed(100 * finalTime / videoDuration)}%)`;
}
text.innerHTML = info + `</span></div>`;
//$(".videoshot").css(videoshot.getStyle(finalTime));
};
};
swiper.action.lowSpeedBackward = speedChange("低");
swiper.action.lowSpeedForward = speedChange("低");
swiper.action.mediumSpeedBackward = speedChange("中");
swiper.action.mediumSpeedForward = speedChange("中");
swiper.action.highSpeedBackward = speedChange("高");
swiper.action.highSpeedForward = speedChange("高");
const volumeChange = speed =>
{
return volume =>
{
const current = Math.round(video.prop("volume") * 100);
let info = `<div class='touch-row'><span class='touch-speed'>${speed}速</span><span class='touch-info'>音量: ${volume > 0 ? "+" : "-"}`;
const commonInfoPart = `</span></div><div class='touch-row'><span class='touch-result'>`;
const finalVolume = current + volume;
if (finalVolume > 100)
{
info += `${100 - current}${commonInfoPart}${current} → 100`;
}
else if (finalVolume < 0)
{
info += `${current}${commonInfoPart}${current} → 0`;
}
else
{
info += `${Math.abs(volume)}${commonInfoPart}${current}${finalVolume}`;
}
text.innerHTML = info + `</span></div>`;
};
};
swiper.action.lowVolumeUp = volumeChange("低");
swiper.action.lowVolumeDown = volumeChange("低");
swiper.action.mediumVolumeUp = volumeChange("中");
swiper.action.mediumVolumeDown = volumeChange("中");
swiper.action.highVolumeUp = volumeChange("高");
swiper.action.highVolumeDown = volumeChange("高");
swiper.action.onActionEnd = action =>
{
box.style.display = "none";
text.innerHTML = "";
if (action)
{
if (action.type === "volume")
{
let volume = video.prop("volume");
volume += action.volume / 100;
if (volume < 0)
{
volume = 0;
}
else if (volume > 1)
{
volume = 1;
}
video.prop("volume", volume);
$(".bilibili-player-video-volume-num").text(Math.round(volume * 100));
$(".bpui-slider-progress").css("height", volume * 100 + "%");
$(".bpui-slider-handle").css("bottom", (35 + volume * 230) / 3 + "%");
if (volume === 0)
{
$(".icon-24soundoff").show();
$(".icon-24soundlarge").hide();
$(".icon-24soundsmall").hide();
}
else if (volume >= 0.5)
{
$(".icon-24soundoff").hide();
$(".icon-24soundlarge").show();
$(".icon-24soundsmall").hide();
}
else
{
$(".icon-24soundoff").hide();
$(".icon-24soundlarge").hide();
$(".icon-24soundsmall").show();
}
}
else if (action.type === "playback")
{
let time = video.prop("currentTime");
time += action.seconds;
if (time < 0)
{
time = 0;
}
else if (time > videoDuration)
{
time = videoDuration;
}
video.prop("currentTime", time);
}
}
};
}
}
);
if ($("#bilibili-touch-video-player").length === 0)
{
const style = getStyle("touchPlayerStyle");
const videoPlayerStyles = `<style id='bilibili-touch-video-player'>${style}</style>`;
$("body").after(videoPlayerStyles);
}
};