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/*
* Copyright © 2010 Intel Corporation
* Copyright © 2012 Collabora, Ltd.
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting documentation, and
* that the name of the copyright holders not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. The copyright holders make no representations
* about the suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <cairo.h>
#include <math.h>
#include <assert.h>
#include <linux/input.h>
#include <wayland-client.h>
#include "window.h"
#include <X11/keysym.h>
struct clickdot {
struct display *display;
struct window *window;
struct widget *widget;
int32_t x, y;
};
static void
redraw_handler(struct widget *widget, void *data)
{
static const double r = 10.0;
struct clickdot *clickdot = data;
cairo_surface_t *surface;
cairo_t *cr;
struct rectangle allocation;
widget_get_allocation(clickdot->widget, &allocation);
surface = window_get_surface(clickdot->window);
cr = cairo_create(surface);
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
cairo_rectangle(cr,
allocation.x,
allocation.y,
allocation.width,
allocation.height);
cairo_set_source_rgba(cr, 0, 0, 0, 0.8);
cairo_fill(cr);
cairo_translate(cr, clickdot->x + 0.5, clickdot->y + 0.5);
cairo_set_line_width(cr, 1.0);
cairo_set_source_rgb(cr, 0.1, 0.9, 0.9);
cairo_move_to(cr, 0.0, -r);
cairo_line_to(cr, 0.0, r);
cairo_move_to(cr, -r, 0.0);
cairo_line_to(cr, r, 0.0);
cairo_arc(cr, 0.0, 0.0, r, 0.0, 2.0 * M_PI);
cairo_stroke(cr);
cairo_destroy(cr);
cairo_surface_destroy(surface);
}
static void
keyboard_focus_handler(struct window *window,
struct input *device, void *data)
{
struct clickdot *clickdot = data;
window_schedule_redraw(clickdot->window);
}
static void
key_handler(struct window *window, struct input *input, uint32_t time,
uint32_t key, uint32_t sym, uint32_t state, void *data)
{
struct clickdot *clickdot = data;
if (state == 0)
return;
switch (sym) {
case XK_Escape:
display_exit(clickdot->display);
break;
}
}
static void
button_handler(struct widget *widget,
struct input *input, uint32_t time,
int button, int state, void *data)
{
struct clickdot *clickdot = data;
if (state && button == BTN_LEFT)
input_get_position(input, &clickdot->x, &clickdot->y);
widget_schedule_redraw(widget);
}
static struct clickdot *
clickdot_create(struct display *display)
{
struct clickdot *clickdot;
clickdot = malloc(sizeof *clickdot);
if (clickdot == NULL)
return clickdot;
memset(clickdot, 0, sizeof *clickdot);
clickdot->window = window_create(display);
clickdot->widget = frame_create(clickdot->window, clickdot);
window_set_title(clickdot->window, "Wayland ClickDot");
clickdot->display = display;
window_set_key_handler(clickdot->window, key_handler);
window_set_user_data(clickdot->window, clickdot);
window_set_keyboard_focus_handler(clickdot->window,
keyboard_focus_handler);
widget_set_redraw_handler(clickdot->widget, redraw_handler);
widget_set_button_handler(clickdot->widget, button_handler);
widget_schedule_resize(clickdot->widget, 500, 400);
clickdot->x = 250;
clickdot->y = 200;
return clickdot;
}
static void
clickdot_destroy(struct clickdot *clickdot)
{
widget_destroy(clickdot->widget);
window_destroy(clickdot->window);
free(clickdot);
}
int
main(int argc, char *argv[])
{
struct display *display;
struct clickdot *clickdot;
display = display_create(&argc, &argv, NULL);
if (display == NULL) {
fprintf(stderr, "failed to create display: %m\n");
return -1;
}
clickdot = clickdot_create(display);
display_run(display);
clickdot_destroy(clickdot);
display_destroy(display);
return 0;
}
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