/*
 * Copyright (c) 2010 Mike Qin <mikeandmore@gmail.com>
 *
 * The contents of this file are subject to the terms of either the GNU Lesser
 * General Public License Version 2.1 only ("LGPL") or the Common Development and
 * Distribution License ("CDDL")(collectively, the "License"). You may not use this
 * file except in compliance with the License. You can obtain a copy of the CDDL at
 * http://www.opensource.org/licenses/cddl1.php and a copy of the LGPLv2.1 at
 * http://www.opensource.org/licenses/lgpl-license.php. See the License for the
 * specific language governing permissions and limitations under the License. When
 * distributing the software, include this License Header Notice in each file and
 * include the full text of the License in the License file as well as the
 * following notice:
 *
 * NOTICE PURSUANT TO SECTION 9 OF THE COMMON DEVELOPMENT AND DISTRIBUTION LICENSE
 * (CDDL)
 * For Covered Software in this distribution, this License shall be governed by the
 * laws of the State of California (excluding conflict-of-law provisions).
 * Any litigation relating to this License shall be subject to the jurisdiction of
 * the Federal Courts of the Northern District of California and the state courts
 * of the State of California, with venue lying in Santa Clara County, California.
 *
 * Contributor(s):
 *
 * If you wish your version of this file to be governed by only the CDDL or only
 * the LGPL Version 2.1, indicate your decision by adding "[Contributor]" elects to
 * include this software in this distribution under the [CDDL or LGPL Version 2.1]
 * license." If you don't indicate a single choice of license, a recipient has the
 * option to distribute your version of this file under either the CDDL or the LGPL
 * Version 2.1, or to extend the choice of license to its licensees as provided
 * above. However, if you add LGPL Version 2.1 code and therefore, elected the LGPL
 * Version 2 license, then the option applies only if the new code is made subject
 * to such option by the copyright holder.
 */

#include <gdk/gdkx.h>

#include "xmisc.h"

void
get_window_position(Window w, int* x, int* y)
{
    int tx = 0, ty = 0;
    Window child;
    if (XTranslateCoordinates(dpy, w, DefaultRootWindow(dpy),
                              0, 0,
                              &tx, &ty, &child) < 0) {
        printf("ERROR\n");
        return;
    }
    if (x != NULL)
        (*x) = tx;
    if (y != NULL)
        (*y) = ty;
}

void
get_window_size(Window w, int* width, int* height)
{
    XWindowAttributes attrs;
    if (XGetWindowAttributes(dpy, w, &attrs) < 0) {
        printf("ERROR\n");
    }
    if (width != NULL)
        (*width) = attrs.width;
    if (height != NULL)
        (*height) = attrs.height;
}

void
get_screen_size(int* width, int* height)
{
    get_window_size(DefaultRootWindow(dpy), width, height);
}

Display* dpy = NULL;

void
init_display(int* argc, char*** argv)
{
    gtk_init(argc, argv);
    dpy = GDK_DISPLAY();
}

static int
in_range(int x, int min, int max)
{
    if (x < min) x = min;
    if (x > max) x = max;
    return x;
}

void
adjust_position(int* x, int* y, int width, int height)
{
    int screen_width, screen_height;
    get_screen_size(&screen_width, &screen_height);
    *x = in_range(*x, 0, screen_width - width);
    *y = in_range(*y, 0, screen_height - height);
}