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cefpython/src/client_handler/x11.cpp at master · BitCoding/cefpython · GitHub
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cefpython
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//
Copyright (c) 2016 CEF Python, see the Authors file.
//
All rights reserved. Licensed under BSD 3-clause license.
//
Project website: https://github.com/cztomczak/cefpython
//
NOTE: This file is also used by "subprocess" and "libcefpythonapp"
//
targets during build.
#
include
"
x11.h
"
#
include
"
include/base/cef_logging.h
"
int
XErrorHandlerImpl
(Display *display, XErrorEvent *event) {
LOG
(
INFO
) <<
"
[Browser process]
"
<<
"
X error received:
"
<<
"
type
"
<< event->
type
<<
"
,
"
<<
"
serial
"
<< event->
serial
<<
"
,
"
<<
"
error_code
"
<<
static_cast
<
int
>(event->
error_code
) <<
"
,
"
<<
"
request_code
"
<<
static_cast
<
int
>(event->
request_code
) <<
"
,
"
<<
"
minor_code
"
<<
static_cast
<
int
>(event->
minor_code
);
return
0
;
}
int
XIOErrorHandlerImpl
(Display *display) {
return
0
;
}
void
InstallX11ErrorHandlers
() {
//
Copied from upstream cefclient.
//
Install xlib error handlers so that the application won't be terminated
//
on non-fatal errors. Must be done after initializing GTK.
LOG
(
INFO
) <<
"
[Browser process] Install X11 error handlers
"
;
XSetErrorHandler
(XErrorHandlerImpl);
XSetIOErrorHandler
(XIOErrorHandlerImpl);
}
void
SetX11WindowBounds
(CefRefPtr<CefBrowser> browser,
int
x,
int
y,
int
width,
int
height) {
::Window xwindow = browser->
GetHost
()->
GetWindowHandle
();
::Display* xdisplay =
cef_get_xdisplay
();
XWindowChanges changes = {
0
};
changes.
x
= x;
changes.
y
= y;
changes.
width
=
static_cast
<
int
>(width);
changes.
height
=
static_cast
<
int
>(height);
XConfigureWindow
(xdisplay, xwindow,
CWX
|
CWY
| CWHeight | CWWidth, &changes);
}
void
SetX11WindowTitle
(CefRefPtr<CefBrowser> browser,
char
* title) {
::Window xwindow = browser->
GetHost
()->
GetWindowHandle
();
::Display* xdisplay =
cef_get_xdisplay
();
XStoreName
(xdisplay, xwindow, title);
}
GtkWindow*
CefBrowser_GetGtkWindow
(CefRefPtr<CefBrowser> browser) {
//
TODO: Should return NULL when using the Views framework
//
-- REWRITTEN FOR CEF PYTHON USE CASE --
//
X11 window handle
::Window xwindow = browser->
GetHost
()->
GetWindowHandle
();
//
X11 display
::Display* xdisplay =
cef_get_xdisplay
();
//
GDK display
GdkDisplay* gdk_display =
NULL
;
if
(xdisplay) {
//
See if we can find GDK display using X11 display
gdk_display =
gdk_x11_lookup_xdisplay
(xdisplay);
}
if
(!gdk_display) {
//
If not then get the default display
gdk_display =
gdk_display_get_default
();
}
if
(!gdk_display) {
//
The tkinter_.py and hello_world.py examples do not use GTK
//
internally, so GTK wasn't yet initialized and must do it
//
now, so that display is available. Also must install X11
//
error handlers to avoid 'BadWindow' errors.
//
--
//
A similar code is in cefpython_app.cpp and it might already
//
been executed. If making changes here, make changes there
//
as well.
LOG
(
INFO
) <<
"
[Browser process] Initialize GTK
"
;
gtk_init
(
0
,
NULL
);
InstallX11ErrorHandlers
();
//
Now the display is available
gdk_display =
gdk_display_get_default
();
}
//
In kivy_.py example getting error message:
//
> Can't create GtkPlug as child of non-GtkSocket
//
However dialog handler works just fine.
GtkWidget* widget =
gtk_plug_new_for_display
(gdk_display, xwindow);
//
Getting top level widget doesn't seem to be required.
//
OFF: GtkWidget* toplevel = gtk_widget_get_toplevel(widget);
GtkWindow* window =
GTK_WINDOW
(widget);
if
(!window) {
LOG
(
ERROR
) <<
"
No GtkWindow for browser
"
;
}
return
window;
}
XImage*
CefBrowser_GetImage
(CefRefPtr<CefBrowser> browser) {
::Display* display =
cef_get_xdisplay
();
if
(!display) {
LOG
(
ERROR
) <<
"
XOpenDisplay failed in CefBrowser_GetImage
"
;
return
NULL
;
}
::Window browser_window = browser->
GetHost
()->
GetWindowHandle
();
XWindowAttributes attrs;
if
(!
XGetWindowAttributes
(display, browser_window, &attrs)) {
LOG
(
ERROR
) <<
"
XGetWindowAttributes failed in CefBrowser_GetImage
"
;
return
NULL
;
}
XImage* image =
XGetImage
(display, browser_window,
0
,
0
, attrs.
width
, attrs.
height
,
AllPlanes, ZPixmap);
if
(!image) {
LOG
(
ERROR
) <<
"
XGetImage failed in CefBrowser_GetImage
"
;
return
NULL
;
}
return
image;
}
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