From f0357f199c0105c57a0010b0519664c0e0cbd5a1 Mon Sep 17 00:00:00 2001
From: guokeke <guo.ke.ke.a@gmail.com>
Date: Mon, 28 Aug 2017 22:32:08 +0800
Subject: [PATCH] Improve

---
 src/DPlayer.js   | 32 ++++++++++++++++++++++----------
 src/DPlayer.scss |  6 +++---
 2 files changed, 25 insertions(+), 13 deletions(-)

diff --git a/src/DPlayer.js b/src/DPlayer.js
index cd36cc2..2aa6cf5 100644
--- a/src/DPlayer.js
+++ b/src/DPlayer.js
@@ -1106,14 +1106,17 @@ class DPlayer {
             const time = this.video.duration * (tx / pbar.offsetWidth);
             timeTips.innerText = utils.secondToTime(time);
             timeTips.style.left = `${(tx - 20)}px`;
-            this.previewWrapper.style.left = `${(tx - 80)}px`;
+            this.previewWrapper.style.left = `${(tx - this.previewWrapper.offsetWidth / 2)}px`;
 
             switch (e.type) {
             case 'mouseenter':
             case 'mouseover':
             case 'mousemove':
                 this.isMouseHoverPbar = true;
-                this.setPreviewSourceAndFrame({ time });
+                this.setPreviewSourceAndFrame({
+                    url: this.video.current.src,
+                    time
+                });
                 this.timeTipsDisplay(true, timeTips);
                 break;
             case 'mouseleave':
@@ -1146,11 +1149,18 @@ class DPlayer {
         this.previewVideo = document.createElement("video");
         this.previewWrapper = this.element.getElementsByClassName('dplayer-bar-preview')[0];
         this.previewCanvas = this.element.getElementsByClassName('dplayer-bar-preview-canvas')[0];
-        this.previewCanvas.width = this.previewWrapper.offsetWidth;
-        this.previewCanvas.height = this.previewWrapper.offsetHeight;
+
         this.previewVideo.preload = 'auto';
+        const w = this.element.offsetWidth / 3;
+        const h = this.element.offsetHeight / 3;
+        this.previewWrapper.style.width = `${w}px`;
+        this.previewWrapper.style.height = `${h}px`;
+        this.previewWrapper.style.top = `${-h}px`;
+        this.previewCanvas.width = w;
+        this.previewCanvas.height = h;
+
         this.setPreviewSourceAndFrame({
-            url: this.video.src, time: 0
+            url: this.video.current.src, time: 0
         });
         this.bindPreviewEvent();
     }
@@ -1165,20 +1175,22 @@ class DPlayer {
     }
 
     bindPreviewEvent () {
-        if (!this.previewVideo) {return;}
+        this.previewNumber = 0;
         this.previewVideo.addEventListener('seeked', () => {
-            this.generPreviewImage(this.video.currentTime);
+            this.previewNumber += 1;
+            this.generPreviewImage(this.previewNumber);
         });
     }
 
-    generPreviewImage (time) {
-        if (time !== this.video.currentTime) {return;}
+    generPreviewImage (number) {
+        if (number !== this.previewNumber) {return;}
         if (!this.isMouseHoverPbar) {return;}
+        this.previewDispaly(true);
+        if (!this.isPreViewShow) {return;}
         const ctx = this.previewCanvas.getContext('2d');
         ctx.drawImage(this.previewVideo, 0, 0,
             this.previewWrapper.offsetWidth,
             this.previewWrapper.offsetHeight);
-        this.previewDispaly(true);
     }
 
 
diff --git a/src/DPlayer.scss b/src/DPlayer.scss
index f244944..896fbba 100644
--- a/src/DPlayer.scss
+++ b/src/DPlayer.scss
@@ -376,9 +376,9 @@
 
             .dplayer-bar-preview {
                 position: absolute;
-                width: 160px;
-                height: 80px;
-                top: -80px;
+                // width: 160px;
+                // height: 80px;
+                // top: -80px;
                 background: #fff;
 
                 &.hidden {