Resolution parameters in CEF3

[andreykrasnodar]

Hello again.
I am using CEF 3 and need an unusual function
Just simple JavaScript code

Code: Select all

<script>
document.write(screen.width);
document.write(screen.height);
</script>

shows my real screen resolution. But I want to change theese parameters. Is it possible?

[dilfich]

Possible, but only OSR version.
SimpleOSRBrowser
GetScreenInfo( You can set the screen resolution
GetViewRect( You can set the browser resolution

[andreykrasnodar]

Is there any way to do it without using OSR Browser?

[dilfich]

Like, no, I'd like that, too(

[andreykrasnodar]

I made one thing

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procedure TForm1.Chromium1BeforeResourceLoad(Sender: TObject;
  const browser: ICefBrowser; const frame: ICefFrame;
  const request: ICefRequest; const callback: ICefRequestCallback;
  out Result: TCefReturnValue);
var
  CodeStr:string;
  screenwidth, screenheight: integer;
begin
  screenwidth:=800;
  screenheight:=600;
  CodeStr:='';
  CodeStr:=CodeStr+'var tempScreen = {}; for (var obj in screen)tempScreen[obj] = screen[obj]; tempScreen.__proto__ = screen.__proto__; screen = tempScreen;screen.width = '+IntToStr(screenwidth)+';screen.height = '+IntToStr(screenheight)+';';
  Chromium1.Browser.MainFrame.ExecuteJavaScript(CodeStr, 'about:blank', 0);
end;

If you open website containing

Code: Select all

<script>document.write(screen.width)</script>

you will see your real screen width. But if you open a website containing

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 <script src="script.js"></script>

and script.js is

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document.write(screen.width)

you will see 800
but if you reload this page (browser will load script from the cache, I think) you will see your real width.
Fun.

[dilfich]

you will see 800
but if you reload this page (browser will load script from the cache, I think) you will see your real width.
Fun.

It seems to work - https://browserleaks.com/javascript
But this is for the screen, and for the browser how?

[andreykrasnodar]

you will see 800
but if you reload this page (browser will load script from the cache, I think) you will see your real width.
Fun.

It seems to work - https://browserleaks.com/javascript
But this is for the screen, and for the browser how?

The browser window (in my project) is more simple: just set Chromium component parameters width and height as needed screen width and screen height minus constant.
But... link below also shows parameters availWidth and availHeight which I should correct.