def get(self, url, check_cache=True):
if check_cache:
img = self.get_no_download(url)
if img is not None:
return img
# otherwise, find an existing image tag loading this url, or create one.
html = '''
(function() {
var img = document.getElementById(%(hashed_url)s);
if (!img) {
img = document.createElement('img');
document.body.appendChild(img);
window.allImages.push(img);
img.setAttribute('id', %(hashed_url)s);
img.setAttribute('onLoad', 'onLoad(this);');
img.setAttribute('onError', 'onError(this);');
img.src = %(url)s;
} else {
if (img.load_state === 'loaded')
onLoad(img);
else if (img.load_state === 'error')
onError(img);
}
img.lastAccessTime = new Date().getTime();
if (window.allImages.length > window.MAX_IMAGES)
evictOld();
})();
''' % dict(url = jsenc(url), hashed_url=jsenc(urlhash(url)))
self.GetWebView().RunScript(html)
def get(self, url, check_cache=True):
if check_cache:
img = self.get_no_download(url)
if img is not None:
return img
# otherwise, find an existing image tag loading this url, or create one.
html = '''
(function() {
var img = document.getElementById(%(hashed_url)s);
if (!img) {
img = document.createElement('img');
document.body.appendChild(img);
window.allImages.push(img);
img.setAttribute('id', %(hashed_url)s);
img.setAttribute('onLoad', 'onLoad(this);');
img.setAttribute('onError', 'onError(this);');
img.src = %(url)s;
} else {
if (img.load_state === 'loaded')
onLoad(img);
else if (img.load_state === 'error')
onError(img);
}
img.lastAccessTime = new Date().getTime();
if (window.allImages.length > window.MAX_IMAGES)
evictOld();
})();
''' % dict(url=jsenc(url), hashed_url=jsenc(urlhash(url)))
self.GetWebView().RunScript(html)
def GetWebView(self):
if self.webview is not None:
return self.webview
self.frame = wx.Frame(None)
w = self.webview = WebKitWindow(self.frame)
w.js_to_stderr = True
self.bridge = bridge = JSPythonBridge(self.webview)
bridge.on_call += self._webview_on_call
import gui.skin
jslib = lambda name: jsenc((gui.skin.resourcedir() / 'html' / name).url())
html = '''<!doctype html>
<html>
<head>
<script type="text/javascript" src=%(utils)s></script>
<script type="text/javascript" src=%(pythonbridgelib)s></script>
<script type="text/javascript">
function onLoad(img) {
img.load_state = 'loaded';
D.notify('onLoad', {src: img.src});
}
function onError(img) {
img.load_state = 'error';
D.notify('onError', {src: img.src});
}
function cmp(a, b) {
if (a < b) return -1;
else if (b > a) return 1;
else return 0;
}
function _byTime(a, b) {
return cmp(a.lastAccessTime, b.lastAccessTime);
}
function evictOld() {
// TODO: an insertion sort at access time would be more efficient, but this array is small so...eh
allImages.sort(_byTime);
var numToDelete = allImages.length - MAX_IMAGES;
var deleted = allImages.slice(0, numToDelete);
allImages = allImages.slice(numToDelete);
for (var i = 0; i < deleted.length; ++i) {
var img = deleted[i];
img.parentNode.removeChild(img);
}
}
window.allImages = [];
window.MAX_IMAGES = 30;
</script>
</head>
<body>
</body>
</html>''' % dict(pythonbridgelib=jslib('pythonbridge.js'),
utils=jslib('utils.js'))
self.bridge.SetPageSource(html, 'file://imageloader')
return self.webview
def GetWebView(self):
if self.webview is not None:
return self.webview
self.frame = wx.Frame(None)
w = self.webview = WebKitWindow(self.frame)
w.js_to_stderr = True
self.bridge = bridge = JSPythonBridge(self.webview)
bridge.on_call += self._webview_on_call
import gui.skin
jslib = lambda name: jsenc(
(gui.skin.resourcedir() / 'html' / name).url())
html = '''<!doctype html>
<html>
<head>
<script type="text/javascript" src=%(utils)s></script>
<script type="text/javascript" src=%(pythonbridgelib)s></script>
<script type="text/javascript">
function onLoad(img) {
img.load_state = 'loaded';
D.notify('onLoad', {src: img.src});
}
function onError(img) {
img.load_state = 'error';
D.notify('onError', {src: img.src});
}
function cmp(a, b) {
if (a < b) return -1;
else if (b > a) return 1;
else return 0;
}
function _byTime(a, b) {
return cmp(a.lastAccessTime, b.lastAccessTime);
}
function evictOld() {
// TODO: an insertion sort at access time would be more efficient, but this array is small so...eh
allImages.sort(_byTime);
var numToDelete = allImages.length - MAX_IMAGES;
var deleted = allImages.slice(0, numToDelete);
allImages = allImages.slice(numToDelete);
for (var i = 0; i < deleted.length; ++i) {
var img = deleted[i];
img.parentNode.removeChild(img);
}
}
window.allImages = [];
window.MAX_IMAGES = 30;
</script>
</head>
<body>
</body>
</html>''' % dict(pythonbridgelib=jslib('pythonbridge.js'),
utils=jslib('utils.js'))
self.bridge.SetPageSource(html, 'file://imageloader')
return self.webview
