private void Init()
{
if (_isInitialized)
{
return;
}
_isInitialized = true;
var proxy = (mozIDOMWindowProxy)Xpcom.QueryInterface(_webNav.Instance, typeof(mozIDOMWindowProxy).GUID);
GeckoDomDocument doc = _webNav.Instance.GetDocumentAttribute()
.Wrap(proxy, GeckoDomDocument.CreateDomDocumentWraper);
GeckoElement rootElement = doc.DocumentElement;
while (rootElement.FirstChild != null)
{
rootElement.RemoveChild(rootElement.FirstChild);
}
// Use of the canvas technique was inspired by: the abduction! firefox plugin by Rowan Lewis
// https://addons.mozilla.org/en-US/firefox/addon/abduction/
uint flags = /*nsIDOMCanvasRenderingContext2DConsts.DRAWWINDOW_DO_NOT_FLUSH*/ 2
//| nsIDOMCanvasRenderingContext2DConsts.DRAWWINDOW_DRAW_VIEW 4
| /*nsIDOMCanvasRenderingContext2DConsts.DRAWWINDOW_ASYNC_DECODE_IMAGES*/ 16
| /*nsIDOMCanvasRenderingContext2DConsts.DRAWWINDOW_USE_WIDGET_LAYERS*/ 8;
string func = @"
function drawWindow(window, document, x, y, w, h, canvas)
{
try {
canvas = document.createElement('canvas');
canvas.width = w;
canvas.height = h;
ctx = canvas.getContext('2d');
ctx.drawWindow(window, x, y, w, h, 'rgb(255,255,255)', " + flags + @");
return canvas.toDataURL('image/png');
} catch(e) {
return e + '' + 'window = ' + window + ' x = ' + x;
}
}
";
var button = doc.CreateElement("button");
button.SetAttribute("onclick",
func +
@"this.dataset.drawResult = drawWindow(this.sourceWin, this.ownerDocument, this.x, this.y, this.w, this.h)");
rootElement.AppendChild(button);
_command = Xpcom.QueryInterface <nsIDOMElement>(button.DOMElement).AsComPtr();
}
private void Init()
{
if (!_isInitialized)
{
_isInitialized = true;
GeckoDomDocument doc = webNav.Instance.GetDocumentAttribute()
.Wrap(GeckoDocument.CreateDomDocumentWraper);
GeckoElement rootElement = doc.DocumentElement;
while (rootElement.FirstChild != null)
{
rootElement.RemoveChild(rootElement.FirstChild);
}
// Use of the canvas technique was inspired by: the abduction! firefox plugin by Rowan Lewis
// https://addons.mozilla.org/en-US/firefox/addon/abduction/
uint flags = (uint)(nsIDOMCanvasRenderingContext2DConsts.DRAWWINDOW_DO_NOT_FLUSH
//| nsIDOMCanvasRenderingContext2DConsts.DRAWWINDOW_DRAW_VIEW
| nsIDOMCanvasRenderingContext2DConsts.DRAWWINDOW_ASYNC_DECODE_IMAGES
| nsIDOMCanvasRenderingContext2DConsts.DRAWWINDOW_USE_WIDGET_LAYERS);
string func = @"
function drawWindow(window, x, y, w, h, canvas, ctx)
{
try {
canvas = window.document.createElement('canvas');
canvas.width = w;
canvas.height = h;
ctx = canvas.getContext('2d');
ctx.drawWindow(window, x, y, w, h, 'rgb(255,255,255)', " + flags.ToString() + @");
return canvas.toDataURL('image/png');
} catch(e) {
return e + ''
}
}
";
var button = doc.CreateElement("button");
button.SetAttribute("oncommand",
func +
@"this.setUserData('drawResult', drawWindow(this.getUserData('window'), this.getUserData('x'), this.getUserData('y'), this.getUserData('w'), this.getUserData('h')), null)");
rootElement.AppendChild(button);
command = Xpcom.QueryInterface <nsIDOMXULElement>(button.DOMElement).AsComPtr();
}
}