透過網頁讀取Photoshop PSD檔案內容
在專案中有需要透過網頁來讀取Photoshop PSD檔案的內部資訊，我們透過PSD.js（備用載點）來實現這樣的功能，在官方提供的功能展示頁中，我們可以看到在頁面中只需引入psd.min.js後，加入透過少量的Javascript就可以針對PSD進行解析。
<!DOCTYPE html>
<html>
<head>
<title>psd.js image example</title>
<style type="text/css">
body, html {
padding: 0;
margin: 0;
}
#dropzone {
width: 500px;
height: 100px;
border: 1px #ababab dashed;
margin: 50px auto;
}
#dropzone p {
text-align: center;
line-height: 100px;
margin: 0;
padding: 0;
}
#image {
text-align: center;
}
</style>
<script type="text/javascript" src="psd.min.js"></script>
</head>
<body>
<div id="dropzone">
<p>Drop here</p>
</div>
<div id="image"></div>
<pre id="data"></pre>
<script type="text/javascript">
(function () {
var PSD = require('psd');
document.getElementById('dropzone').addEventListener('dragover', onDragOver, true);
document.getElementById('dropzone').addEventListener('drop', onDrop, true);
function onDragOver(e) {
e.stopPropagation();
e.preventDefault();
e.dataTransfer.dropEffect = 'copy';
}
function onDrop(e) {
e.stopPropagation();
e.preventDefault();
PSD.fromEvent(e).then(function (psd) {
var data = JSON.stringify(psd.tree().export(), undefined, 2);
document.getElementById('data').innerHTML = data;
document.getElementById('image').appendChild(psd.image.toPng());
});
}
}());
</script>
</body>
</html>
我們透過下圖這樣的一個PSD檔案對頁面進行測試，檔案中共有三個圖層，包含一個文字圖層。
頁面將PSD分析出結果後，以json格式顯示在頁面上，可以看到文字圖層的部分，不僅能讀到圖層名稱也包含文字內容和字型名稱。
{
"children": [
{
"type": "layer",
"visible": true,
"opacity": 1,
"blendingMode": "normal",
"name": "Photoshop Text",
"left": 302,
"right": 723,
"top": 90,
"bottom": 128,
"height": 38,
"width": 421,
"mask": {},
"text": {
"value": "THIS IS TEXT LAYER",
"font": {
"name": "MyriadPro-Regular\u0000",
"sizes": [
53
],
"colors": [
[
0,
0,
0,
255
]
],
"alignment": [
"center"
]
},
"left": 0,
"top": 0,
"right": 0,
"bottom": 0,
"transform": {
"xx": 1,
"xy": 0,
"yx": 0,
"yy": 1,
"tx": 513,
"ty": 127
}
},
"image": {}
},
{
"type": "layer",
"visible": true,
"opacity": 1,
"blendingMode": "normal",
"name": "PSD Icon",
"left": 287,
"right": 738,
"top": 209,
"bottom": 669,
"height": 460,
"width": 451,
"mask": {},
"image": {}
},
{
"type": "layer",
"visible": true,
"opacity": 1,
"blendingMode": "normal",
"name": "Background",
"left": 0,
"right": 1024,
"top": 0,
"bottom": 800,
"height": 800,
"width": 1024,
"mask": {},
"image": {}
}
],
"document": {
"width": 1024,
"height": 800,
"resources": {
"layerComps": [],
"guides": [],
"slices": []
}
}
}
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How Austrian climber Babsi Zangerl completed a ‘hard to believe’ historic ascent of El Capitan
гей член
On a vertical rockface like El Capitan, the soaring slab of granite in California’s Yosemite National Park, perfection is an elusive, almost impossible goal for professional climbers.
It can take years of experience to master a route to the top of the 3,000-foot wall, such is its difficulty and magnitude. That’s precisely why Babsi Zangerl’s recent “flash” of El Cap is so unique and impressive.
In climbing, to “flash” a route is to reach the top on the first attempt without any falls – a feat never before achieved on El Cap prior to Zangerl’s maiden summit of Freerider last month. From bottom to top, she was faultless.
“It was hard to believe,” the Austrian climber tells CNN Sport. “I was so surprised that this just happened and that I didn’t fall … I could have fallen so many times on that climb.”
Freerider is a popular route up El Capitan, the same one taken by Alex Honnold when he climbed the rockface without ropes or harnesses in the Oscar-winning documentary “Free Solo.”
Zangerl has lots of experience climbing on El Cap and around Yosemite but had never previously attempted the 30-plus pitches up Freerider. The challenging Monster Offwidth section – a 60-meter-long (almost 197 feet) crack around halfway through the climb – had put her off, and flashing the route, she says, wasn’t a long-standing target for her.
“It was more that we just could try to go flash and see how far we can get,” Zangerl explains. “But the expectations were really low, so it was not a big goal from the beginning … There are some really slabby pitches where you don’t have hand holds, so you’re mostly standing on the bad feet, and you always can slip off.
“The chance was really low – I didn’t have the feeling that we have a big chance on the flash.”
It was only once she had conquered the Boulder Problem – perhaps the hardest, most treacherous part of the climb with only razor-thin holds on which to grip – that the flash seemed possible.
“Then it was kind of: you don’t want to f**k it up on the last part,” says Zangerl.
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