From ddfc3f553120cd2dc08a2f2172f12c752adc65a0 Mon Sep 17 00:00:00 2001
From: 闫增涛 <1829501689@qq.com>
Date: 星期三, 03 七月 2024 14:51:44 +0800
Subject: [PATCH] 优化
---
src/components/graffiti/index.vue | 191 ++++++++++++++++++++++++++++++++++++-----------
1 files changed, 144 insertions(+), 47 deletions(-)
diff --git a/src/components/graffiti/index.vue b/src/components/graffiti/index.vue
index de1beef..902940e 100644
--- a/src/components/graffiti/index.vue
+++ b/src/components/graffiti/index.vue
@@ -1,11 +1,11 @@
+<!-- 娑傝壊杩炵嚎棰樻帶浠� -->
<template>
- <div class="page">
+ <div class="page" :style="{ height: imgHeight + 120 + 'px' }">
<div class="main">
<div id="canvas_panel">
<canvas
id="canvas"
:style="{
- backgroundImage: `url(${backgroundImage})`,
backgroundSize: 'cover',
backgroundPosition: 'center',
}"
@@ -13,8 +13,12 @@
>
</div>
</div>
- <div class="footer">
- <BrushSize :size="brushSize" @change-size="onChangeSize" @change-color="onChangeColor" />
+ <div class="footer" :style="{ backgroundColor: bcColor }">
+ <BrushSize
+ :size="brushSize"
+ @change-size="onChangeSize"
+ @change-color="onChangeColor"
+ />
<ToolBtns :tool="brushTool" @change-tool="onChangeTool" />
</div>
</div>
@@ -26,19 +30,29 @@
export default {
name: "graffiti",
components: { BrushSize, ToolBtns },
- props:{
- page:{
- type:Number
+ props: {
+ page: {
+ type: Number,
},
- bcImg:{
- type:String
- }
+ bcImg: {
+ type: String,
+ },
+ imgWidth: {
+ type: Number,
+ },
+ imgHeight: {
+ type: Number,
+ },
+ bcColor: {
+ type: String,
+ default: "#fff",
+ },
},
data() {
return {
canvas: null,
context: null,
- painting: false,
+ painting: false, // 璁板綍鐘舵�侊紝榧犳爣鏄惁鍦ㄦ寜涓嬬姸鎬�
historyData: [], // 瀛樺偍鍘嗗彶鏁版嵁锛岀敤浜庢挙閿�
brushSize: 5, // 绗斿埛澶у皬
brushColor: "#000000", // 绗斿埛棰滆壊
@@ -47,18 +61,23 @@
left: 0,
top: 0,
},
- backgroundImage:
- "",
+ backgroundImage: "",
};
},
mounted() {
- this.backgroundImage = this.bcImg
- this.canvas = document.getElementById("canvas");
+ this.backgroundImage = this.bcImg;
+ this.canvas = (this.container ? this.container : document).getElementById(
+ "canvas"
+ );
if (this.canvas.getContext) {
this.context = this.canvas.getContext("2d", { willReadFrequently: true });
this.initCanvas();
// window.addEventListener('resize', updateCanvasPosition);
- window.addEventListener("scroll",this.updateCanvasOffset,true); // 娣诲姞婊氬姩鏉℃粴鍔ㄤ簨浠剁洃鍚櫒
+ (this.container ? this.container : document).addEventListener(
+ "scroll",
+ this.updateCanvasOffset,
+ true
+ ); // 娣诲姞婊氬姩鏉℃粴鍔ㄤ簨浠剁洃鍚櫒
this.getCanvasOffset();
this.context.lineGap = "round";
this.context.lineJoin = "round";
@@ -68,21 +87,49 @@
this.canvas.addEventListener("mouseleave", this.closePaint);
}
this.toolClear();
- const oldData = localStorage.getItem('graffiti-data')
- if(oldData) {
- this.backgroundImage = oldData
+ const oldData = localStorage.getItem(
+ this.config.activeBook.name + "-graffiti-" + this.page
+ );
+ if (oldData) {
+ this.backgroundImage = oldData;
}
},
+ // watch:{
+ // backgroundImage:{
+ // handler(newValue) {
+ // if(newValue && this.context) {
+ // const imgData = new Image();
+ // // 鍒嗕袱绉嶆儏鍐碉紝鍒濇鐨勫浘鐗� 鐩存帴鐢ㄥ閮ㄩ摼鎺ワ紝闇�瑕佸姞璺ㄥ煙鍜屾椂闂存埑锛屼簩娆′繚瀛樼殑浣滀负鑳屾櫙鍒欎笉闇�瑕�
+ // const oldData = localStorage.getItem(this.config.activeBook.name + '-graffiti-' + this.page)
+ // if(oldData) {
+ // imgData.src = newValue
+ // } else {
+ // imgData.src = newValue + '?' + new Date().getTime();
+ // imgData.setAttribute('crossOrigin', '');
+ // }
+ // imgData.onload = () => {
+ // this.context.drawImage(imgData,0,0)
+ // }
+ // }
+ // }
+ // }
+ // },
methods: {
changeBackground(imgUrl) {
this.backgroundImage = imgUrl;
},
+ // 鍒濆鍖� 鐢诲竷锛岃缃ぇ灏忚儗鏅壊
initCanvas() {
- const that = this
- function resetCanvas() {
- const elPanel = document.getElementById("canvas_panel");
- that.canvas.width = elPanel.clientWidth;
- that.canvas.height = elPanel.clientHeight;
+ const that = this;
+ const resetCanvas = () => {
+ const elPanel = (
+ this.container ? this.container : document
+ ).getElementById("canvas_panel");
+ try {
+ that.canvas.width = elPanel.clientWidth;
+ that.canvas.height = elPanel.clientHeight;
+ } catch (error) {}
+
that.context = that.canvas.getContext("2d", {
willReadFrequently: true,
}); // 娣诲姞杩欎竴琛�
@@ -90,9 +137,24 @@
that.context.fillRect(0, 0, that.canvas.width, that.canvas.height);
that.context.fillStyle = "black";
that.getCanvasOffset(); // 鏇存柊鐢诲竷浣嶇疆
- }
-
+ // 璁剧疆鐢诲竷鑳屾櫙鍥�
+ const imgData = new Image();
+ // 鍒嗕袱绉嶆儏鍐碉紝鍒濇鐨勫浘鐗� 鐩存帴鐢ㄥ閮ㄩ摼鎺ワ紝闇�瑕佸姞璺ㄥ煙鍜屾椂闂存埑锛屼簩娆′繚瀛樼殑浣滀负鑳屾櫙鍒欎笉闇�瑕�
+ const oldData = localStorage.getItem(
+ this.config.activeBook.name + "-graffiti-" + this.page
+ );
+ if (oldData) {
+ imgData.src = oldData;
+ } else {
+ imgData.src = this.backgroundImage + "?" + new Date().getTime();
+ imgData.setAttribute("crossOrigin", "");
+ }
+ imgData.onload = () => {
+ this.context.drawImage(imgData, 0, 0, this.imgWidth, this.imgHeight);
+ };
+ };
resetCanvas();
+ // 鐩戝惉绐楀彛澶у皬 锛岀獥鍙ｆ敼鍙橀噸鏂版覆鏌撶敾甯�
window.addEventListener("resize", resetCanvas);
},
@@ -110,7 +172,7 @@
y: y - this.canvasOffset.top,
};
},
-
+ // 榧犳爣鎶捣鏂规硶
downCallback(event) {
// 鍏堜繚瀛樹箣鍓嶇殑鏁版嵁锛岀敤浜庢挙閿�鏃舵仮澶嶏紙缁樺埗鍓嶄繚瀛橈紝涓嶆槸缁樺埗鍚庡啀淇濆瓨锛�
const data = this.context.getImageData(
@@ -129,7 +191,7 @@
this.brushTool === "eraser" ? "#FFFFFF" : this.brushColor;
this.painting = true;
},
-
+ // 榧犳爣绉诲姩鏂规硶(璁＄畻鍧愭爣骞舵覆鏌撹建杩�)
moveCallback(event) {
if (!this.painting) {
return;
@@ -142,19 +204,21 @@
closePaint() {
this.painting = false;
},
+ // 閲嶆柊璁＄畻鐢诲竷鐨勫亸绉诲��
updateCanvasOffset() {
- this.getCanvasOffset(); // 閲嶆柊璁＄畻鐢诲竷鐨勫亸绉诲��
+ this.getCanvasOffset();
},
-
+ // 鏀瑰彉绗斿埛澶у皬
onChangeSize(size) {
this.brushSize = size;
},
+ // 鏀瑰彉绗斿埛棰滆壊
onChangeColor(color) {
this.brushColor = color;
},
+ // 淇濆瓨锛屾竻绌虹瓑鎸夐挳
onChangeTool(tool) {
this.brushTool = tool;
- console.log(tool);
switch (tool) {
case "clear":
this.toolClear();
@@ -167,40 +231,76 @@
break;
}
},
+ // 娓呯┖canvas鎵�鏈夊唴瀹�(鑳屾櫙鍥鹃櫎澶�)
toolClear() {
this.context.clearRect(0, 0, this.canvas.width, this.canvas.height);
this.resetToolActive();
+ // 鏂板姞鍐呭锛屾竻绌哄悗灏嗚儗鏅浘鍐嶈缃笂鍘�
+ const imgData = new Image();
+ // 鍒嗕袱绉嶆儏鍐碉紝鍒濇鐨勫浘鐗� 鐩存帴鐢ㄥ閮ㄩ摼鎺ワ紝闇�瑕佸姞璺ㄥ煙鍜屾椂闂存埑锛屼簩娆′繚瀛樼殑浣滀负鑳屾櫙鍒欎笉闇�瑕�
+ const oldData = localStorage.getItem(
+ this.config.activeBook.name + "-graffiti-" + this.page
+ );
+ if (oldData) {
+ imgData.src = oldData;
+ } else {
+ imgData.src = this.backgroundImage + "?" + new Date().getTime();
+ imgData.setAttribute("crossOrigin", "");
+ }
+ imgData.onload = () => {
+ this.context.drawImage(imgData, 0, 0, this.imgWidth, this.imgHeight);
+ };
},
- // 鍘熶繚瀛樻柟娉�
+ // 淇濆瓨鐢诲竷鑳屾櫙鍜屽垝绾垮埌鏈湴鏂规硶
toolSave() {
- var imgData = this.canvas.toDataURL({format: 'png', quality:1, width:800,});
- localStorage.setItem('graffiti-data',imgData)
+ var imgData = this.canvas.toDataURL({
+ format: "png",
+ quality: 1,
+ width: 800,
+ });
+ localStorage.setItem(
+ this.config.activeBook.name + "-graffiti-" + this.page,
+ imgData
+ );
},
- // 淇濆瓨鏂规硶锛屼繚瀛樹负涓�寮犲浘鐗囧苟涓嬭浇
+ // 淇濆瓨涓轰竴寮犲浘鐗囧苟涓嬭浇鐨勬柟娉�
saveImgData() {
- var link = document.createElement("a");
- var imgData = this.canvas.toDataURL({format: 'png', quality:1, width:20000, height:4000});
+ var link = (this.container ? this.container : document).createElement(
+ "a"
+ );
+ var imgData = this.canvas.toDataURL({
+ format: "png",
+ quality: 1,
+ width: 20000,
+ height: 4000,
+ });
var strDataURI = imgData.substr(22, imgData.length);
var blob = dataURLtoBlob(imgData);
var objurl = URL.createObjectURL(blob);
link.download = "grid1.png";
link.href = objurl;
link.click();
-
- function dataURLtoBlob(dataurl) {
- var arr = dataurl.split(','), mime = arr[0].match(/:(.*?);/)[1],
- bstr = atob(arr[1]), n = bstr.length, u8arr = new Uint8Array(n);
- while(n--){
+
+ function dataURLtoBlob(dataurl) {
+ var arr = dataurl.split(","),
+ mime = arr[0].match(/:(.*?);/)[1],
+ bstr = atob(arr[1]),
+ n = bstr.length,
+ u8arr = new Uint8Array(n);
+ while (n--) {
u8arr[n] = bstr.charCodeAt(n);
}
- return new Blob([u8arr], {type:mime});
+ return new Blob([u8arr], { type: mime });
}
},
+ // 杩斿洖涓婁竴姝ユ柟娉�(鎾ら攢)
toolUndo() {
+ //
if (this.historyData.length <= 0) {
this.resetToolActive();
return;
}
+ // 灏嗙敾鐨勪笂涓�姝ユ暟鎹啓鍏anvas 閲嶆柊娓叉煋
const lastIndex = this.historyData.length - 1;
this.context.putImageData(this.historyData[lastIndex], 0, 0);
this.historyData.pop();
@@ -210,7 +310,6 @@
saveData(data) {
this.historyData.length >= 50 && this.historyData.shift(); // 璁剧疆鍌ㄥ瓨涓婇檺涓�50姝�
this.historyData.push(data);
- console.log('鏁版嵁',this.historyData);
},
// 娓呴櫎銆佹挙閿�銆佷繚瀛樼姸鎬佷笉闇�瑕佷繚鎸侊紝鎿嶄綔瀹屽悗鎭㈠绗斿埛鐘舵��
resetToolActive() {
@@ -226,8 +325,7 @@
.page {
display: flex;
flex-direction: column;
- width:100%;
- height: 866px;
+ width: 100%;
}
.main {
@@ -239,7 +337,6 @@
justify-content: space-around;
align-items: center;
height: 88px;
- background-color: #fff;
}
#canvas_panel {
--
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