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/*
* Copyright © 2010 Intel Corporation
*
* 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 "wayland-util.h"
#include "wayland-client.h"
#include "wayland-glib.h"
#include "window.h"
#include <X11/keysym.h>
struct resizor {
struct display *display;
struct window *window;
struct window *menu;
int32_t width;
struct {
double current;
double target;
double previous;
} height;
};
static void
frame_callback(struct wl_surface *surface, void *data, uint32_t time)
{
struct resizor *resizor = data;
double force, height;
height = resizor->height.current;
force = (resizor->height.target - height) / 10.0 +
(resizor->height.previous - height);
resizor->height.current =
height + (height - resizor->height.previous) + force;
resizor->height.previous = height;
if (resizor->height.current >= 400) {
resizor->height.current = 400;
resizor->height.previous = 400;
}
if (resizor->height.current <= 200) {
resizor->height.current = 200;
resizor->height.previous = 200;
}
window_set_child_size(resizor->window, resizor->width, height + 0.5);
window_schedule_redraw(resizor->window);
}
static void
resizor_draw(struct resizor *resizor)
{
cairo_surface_t *surface;
cairo_t *cr;
struct rectangle allocation;
window_draw(resizor->window);
window_get_child_allocation(resizor->window, &allocation);
surface = window_get_surface(resizor->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_destroy(cr);
cairo_surface_destroy(surface);
window_flush(resizor->window);
if (fabs(resizor->height.previous - resizor->height.target) > 0.1) {
wl_display_frame_callback(display_get_display(resizor->display),
window_get_wl_surface(resizor->window),
frame_callback, resizor);
}
}
static void
redraw_handler(struct window *window, void *data)
{
struct resizor *resizor = data;
resizor_draw(resizor);
}
static void
keyboard_focus_handler(struct window *window,
struct input *device, void *data)
{
struct resizor *resizor = data;
window_schedule_redraw(resizor->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 resizor *resizor = data;
if (state == 0)
return;
switch (sym) {
case XK_Down:
resizor->height.target = 400;
frame_callback(window_get_wl_surface(window), resizor, 0);
break;
case XK_Up:
resizor->height.target = 200;
frame_callback(window_get_wl_surface(window), resizor, 0);
break;
}
}
static void
show_menu(struct resizor *resizor, struct input *input)
{
int32_t x, y, width = 200, height = 200;
input_get_position(input, &x, &y);
resizor->menu = window_create_transient(resizor->display,
resizor->window,
x - 10, y - 10, width, height);
window_draw(resizor->menu);
window_flush(resizor->menu);
}
static void
button_handler(struct window *window,
struct input *input, uint32_t time,
int button, int state, void *data)
{
struct resizor *resizor = data;
switch (button) {
case 274:
if (state)
show_menu(resizor, input);
else
window_destroy(resizor->menu);
break;
}
}
static struct resizor *
resizor_create(struct display *display)
{
struct resizor *resizor;
int32_t height;
resizor = malloc(sizeof *resizor);
if (resizor == NULL)
return resizor;
memset(resizor, 0, sizeof *resizor);
resizor->window = window_create(display, 500, 400);
window_set_title(resizor->window, "Wayland Resizor");
resizor->display = display;
window_set_key_handler(resizor->window, key_handler);
window_set_user_data(resizor->window, resizor);
window_set_redraw_handler(resizor->window, redraw_handler);
window_set_keyboard_focus_handler(resizor->window,
keyboard_focus_handler);
resizor->width = 300;
resizor->height.current = 400;
resizor->height.previous = resizor->height.current;
resizor->height.target = resizor->height.current;
height = resizor->height.current + 0.5;
window_set_child_size(resizor->window, resizor->width, height);
window_set_button_handler(resizor->window, button_handler);
resizor_draw(resizor);
return resizor;
}
int
main(int argc, char *argv[])
{
struct display *d;
d = display_create(&argc, &argv, NULL, NULL);
if (d == NULL) {
fprintf(stderr, "failed to create display: %m\n");
return -1;
}
resizor_create (d);
display_run(d);
return 0;
}
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