-
Notifications
You must be signed in to change notification settings - Fork 0
/
background.js
60 lines (52 loc) · 1.71 KB
/
background.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
var screenshot = {
content : document.createElement("canvas"),
data : '',
init : function() {
this.initEvents();
},
saveScreenshot : function() {
var image = new Image();
image.onload = function() {
var canvas = screenshot.content;
canvas.width = image.width;
canvas.height = image.height;
var context = canvas.getContext("2d");
context.drawImage(image, 0, 0);
// save the image
var link = document.createElement('a');
link.download = "download.png";
link.href = screenshot.content.toDataURL();
link.click();
screenshot.data = '';
};
image.src = screenshot.data;
},
initEvents : function() {
chrome.tabs.onUpdated.addListener(function(tabId, changeInfo, tab) {
if(tab.status == "complete") {
chrome.tabs.captureVisibleTab(null, {
format : "png",
quality : 100
}, function(data) {
screenshot.data = data;
// send an alert message to webpage
chrome.tabs.query({
active : true,
currentWindow : true
}, function(tabs) {
chrome.tabs.sendMessage(tabs[0].id, {ready : "ready"}, function(response) {
console.log(response)
if (response != "download") {
screenshot.saveScreenshot();
}
else {
screenshot.data = '';
}
});
});
});
}
});
}
};
screenshot.init();