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add html2canvas

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This commit is contained in:
Jesse-Ma
2023-03-15 14:49:19 +08:00
parent b86cf176dd
commit 67035a0abf
3 changed files with 151 additions and 44 deletions
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75
src/views/EditNote.vue
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@@ -113,18 +113,13 @@
<Button-group vertical size="large">
<Button aria-label="create note" type="error" style="border-radius: 0px;font-size: 24px;"
@click="createNote(); switchMenu(); " icon="md-add"></Button>
<!--
<Button type="error" icon="md-refresh" style="border-radius: 0px;font-size: 14px;font-size: 24px;"
@click="refreshPage()"></Button>
-->
<Button aria-label="crop" v-show="model.showDownloadText" type="error"
style="border-radius: 0px;font-size: 24px;" @click="saveImage();switchMenu();"
icon="md-crop"></Button>
<Button aria-label="download text" v-show="model.showDownloadText" type="error"
style="border-radius: 0px;font-size: 24px;" @click="downLoadText(); switchMenu(); "
icon="md-download"></Button>
<Button aria-label="history text" v-show="model.showHistoryText" type="error"
style="border-radius: 0px;font-size: 24px;" @click="downLoadText(); switchMenu(); "
style="border-radius: 0px;font-size: 24px;" @click="downLoadText(); switchMenu();"
icon="md-download"></Button>
<Button type="error" icon="md-trash" style="border-radius: 0px;font-size: 24px;"
@@ -149,7 +144,7 @@
:lg="{ span: 18, offset: 3 }" :xl="{ span: 16, offset: 4 }" :xxl="{ span: 16, offset: 4 }">
<Card :padding="0">
<Form :model="noteForm" :label-width="80">
<div id="wrapper" style="border-left: 2px solid #ed4014;">
<div ref="html2canvas" id="wrapper" style="border-left: 2px solid #ed4014;">
<Input element-id="noteText" type="textarea" :border="false" v-model="noteForm.text" autofocus
:autosize="{ minRows: 30, maxRows: 409600 }" :placeholder="$t('content.noteTip')" @input="recordText"
@on-keydown="recordEventKdown" />
@@ -201,6 +196,7 @@ import { setStoreText,setNewStoreText } from "@/libs/noteStorage";
import { saveAs } from 'file-saver';
import { isWeixin } from "@/libs/utils";
import NoteConstant from "@/libs/constants";
import html2canvas from "html2canvas";
export default {
name: 'EditNote',
@@ -498,7 +494,62 @@ export default {
}
}
}
}
},
dataURLToBlob(dataurl) {
let arr = dataurl.split(',');
let mime = arr[0].match(/:(.*?);/)[1];
let bstr = atob(arr[1]);
let n = bstr.length;
let u8arr = new Uint8Array(n);
while (n--) {
u8arr[n] = bstr.charCodeAt(n);
}
return new Blob([u8arr], { type: mime });
},
saveImage() {
let canvasID = this.$refs["html2canvas"];
let that = this;
let a = document.createElement('a');
html2canvas(canvasID,{
scale: 1,
windowWidth: parseInt(document.getElementById("noteText").offsetWidth)+2,
onclone: (clonedDocument) => {
let nt = clonedDocument.getElementById("noteText");
const div = clonedDocument.createElement('div')
div.innerText = nt.value
div.style.color="black";
div.style.padding = "10px";
div.style.textAlign = "left";
div.style.wordBreak = "break-word";
div.style.whiteSpace = "pre-wrap";
div.style.verticalAlign = "top";
div.style.fontSize ="15px";
div.style.width= "100%";
div.style.border="0px";
div.style.fontFamily="'Helvetica Neue', Helvetica, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', '微软雅黑', Arial, sans-serif";
nt.style.display = 'none'
nt.parentElement.parentElement.style.borderLeftColor = "white";
nt.parentElement.append(div)
}
}).then(canvas => {
let dom = document.body.appendChild(canvas);
dom.style.display = 'none';
a.style.display = 'none';
document.body.removeChild(dom);
let blob = that.dataURLToBlob(dom.toDataURL('image/png'));
a.setAttribute('href', URL.createObjectURL(blob));
a.setAttribute('download', that.noteForm.key + '.png');
document.body.appendChild(a);
a.click();
URL.revokeObjectURL(blob);
document.body.removeChild(a);
});
},
}
}
</script>