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// Copyright 2012 Intel Corporation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "x11.h"
#include <waffle/core/wcore_error.h>
static void
x11_error(const char *func_call)
{
wcore_errorf(WAFFLE_UNKNOWN_ERROR, "%s", func_call);
}
bool
x11_display_connect(
const char *name,
Display **xlib_dpy,
xcb_connection_t **xcb_conn)
{
*xlib_dpy = XOpenDisplay(name);
if (!*xlib_dpy) {
x11_error("XOpenDisplay");
return false;
}
*xcb_conn = XGetXCBConnection(*xlib_dpy);
if (!xcb_conn) {
XCloseDisplay(*xlib_dpy);
return false;
}
return true;
}
bool
x11_display_disconnect(Display *dpy)
{
int error = XCloseDisplay(dpy);
if (error)
x11_error("XCloseDisplay");
return !error;
}
xcb_window_t
x11_window_create(
xcb_connection_t *conn,
xcb_visualid_t visual_id,
int width,
int height)
{
const uint32_t attrib_mask = XCB_CW_EVENT_MASK;
const uint32_t attrib_list[] = {
XCB_EVENT_MASK_BUTTON_PRESS
| XCB_EVENT_MASK_EXPOSURE
| XCB_EVENT_MASK_KEY_PRESS,
};
const xcb_setup_t *setup = xcb_get_setup(conn);
if (!setup){
wcore_errorf(WAFFLE_UNKNOWN_ERROR, "xcb_get_setup() failed");
goto error;
}
const xcb_screen_t *screen = xcb_setup_roots_iterator(setup).data;
if (!screen) {
wcore_errorf(WAFFLE_UNKNOWN_ERROR, "failed to get xcb screen");
goto error;
}
xcb_window_t window = xcb_generate_id(conn);
if (window <= 0) {
wcore_errorf(WAFFLE_UNKNOWN_ERROR, "xcb_generate_id() failed");
goto error;
}
xcb_void_cookie_t create_cookie = xcb_create_window_checked(
conn,
XCB_COPY_FROM_PARENT, // depth
window,
screen->root, // parent
0, 0, // x, y
width, height,
0, // border width
XCB_WINDOW_CLASS_INPUT_OUTPUT,
visual_id,
attrib_mask,
attrib_list);
xcb_void_cookie_t map_cookie = xcb_map_window_checked(conn, window);
// Check errors.
xcb_generic_error_t *error;
error = xcb_request_check(conn, create_cookie);
if (error) {
wcore_errorf(WAFFLE_UNKNOWN_ERROR,
"xcb_create_window_checked() failed: error=0x%x",
error->error_code);
goto error;
}
error = xcb_request_check(conn, map_cookie);
if (error) {
wcore_errorf(WAFFLE_UNKNOWN_ERROR,
"xcb_map_window_checked() failed: error=0x%x",
error->error_code);
goto error;
}
return window;
error:
if (window)
xcb_destroy_window(conn, window);
return 0;
}
bool
x11_window_destroy(
xcb_connection_t *conn,
xcb_window_t window)
{
bool ok = true;
xcb_void_cookie_t cookie = xcb_destroy_window_checked(conn, window);
xcb_generic_error_t *error = xcb_request_check(conn, cookie);
if (error) {
ok = false;
wcore_errorf(WAFFLE_UNKNOWN_ERROR,
"xcb_destroy_window_checked() failed: error=0x%x",
error->error_code);
}
return ok;
}
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