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Support JavaScript window.moveTo/By() and resizeTo/By() (fixes #698)

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Adds new CefDisplayHandler::OnContentsBoundsChange and
CefDisplayHandler::GetRootWindowScreenRect callbacks.

cefclient: Implement the above callbacks and call
CefBrowserHost::NotifyScreenInfoChanged when the root window
bounds change.

cefclient: osr: Use real screen bounds by default. Pass
`--fake-screen-bounds` for the old default behavior.

Load https://tests/window in cefclient for additional
implementation details and usage examples.
This commit is contained in:
Marshall Greenblatt
2025-04-23 20:33:07 -04:00
parent f59112d839
commit faa85bf980
68 changed files with 1725 additions and 700 deletions
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43
include/cef_display_handler.h
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@ -38,6 +38,7 @@
#define CEF_INCLUDE_CEF_DISPLAY_HANDLER_H_
#pragma once
#include "include/cef_api_hash.h"
#include "include/cef_base.h"
#include "include/cef_browser.h"
#include "include/cef_frame.h"
@ -123,7 +124,7 @@ class CefDisplayHandler : public virtual CefBaseRefCounted {
///
/// Called when auto-resize is enabled via
/// CefBrowserHost::SetAutoResizeEnabled and the contents have auto-resized.
/// |new_size| will be the desired size in view coordinates. Return true if
/// |new_size| will be the desired size in DIP coordinates. Return true if
/// the resize was handled or false for default handling.
///
/*--cef()--*/
@ -162,6 +163,46 @@ class CefDisplayHandler : public virtual CefBaseRefCounted {
virtual void OnMediaAccessChange(CefRefPtr<CefBrowser> browser,
bool has_video_access,
bool has_audio_access) {}
#if CEF_API_ADDED(CEF_NEXT)
///
/// Called when JavaScript is requesting new bounds via window.moveTo/By() or
/// window.resizeTo/By(). |new_bounds| are in DIP screen coordinates.
///
/// With Views-hosted browsers |new_bounds| are the desired bounds for
/// the containing CefWindow and may be passed directly to
/// CefWindow::SetBounds. With external (client-provided) parent on macOS and
/// Windows |new_bounds| are the desired frame bounds for the containing root
/// window. With other non-Views browsers |new_bounds| are the desired bounds
/// for the browser content only unless the client implements either
/// CefDisplayHandler::GetRootWindowScreenRect for windowed browsers or
/// CefRenderHandler::GetWindowScreenRect for windowless browsers. Clients may
/// expand browser content bounds to window bounds using OS-specific or
/// CefDisplay methods.
///
/// Return true if this method was handled or false for default handling.
/// Default move/resize behavior is only provided with Views-hosted Chrome
/// style browsers.
///
/*--cef(added=next)--*/
virtual bool OnContentsBoundsChange(CefRefPtr<CefBrowser> browser,
const CefRect& new_bounds) {
return false;
}
///
/// Called to retrieve the external (client-provided) root window rectangle in
/// screen DIP coordinates. Only called for windowed browsers on Windows and
/// Linux. Return true if the rectangle was provided. Return false to use the
/// root window bounds on Windows or the browser content bounds on Linux. For
/// additional usage details see CefBrowserHost::NotifyScreenInfoChanged.
///
/*--cef(added=next)--*/
virtual bool GetRootWindowScreenRect(CefRefPtr<CefBrowser> browser,
CefRect& rect) {
return false;
}
#endif
};
#endif // CEF_INCLUDE_CEF_DISPLAY_HANDLER_H_