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/*
* Copyright © 2008 Kristian Høgsberg
*
* 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 "config.h"
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <math.h>
#include <cairo.h>
#include <sys/time.h>
#include <linux/input.h>
#include <wayland-client.h>
#include "window.h"
struct flower {
struct display *display;
struct window *window;
struct widget *widget;
int width, height;
};
static void
set_random_color(cairo_t *cr)
{
cairo_set_source_rgba(cr,
0.5 + (random() % 50) / 49.0,
0.5 + (random() % 50) / 49.0,
0.5 + (random() % 50) / 49.0,
0.5 + (random() % 100) / 99.0);
}
static void
draw_stuff(cairo_surface_t *surface, int width, int height)
{
const int petal_count = 3 + random() % 5;
const double r1 = 60 + random() % 35;
const double r2 = 20 + random() % 40;
const double u = (10 + random() % 90) / 100.0;
const double v = (random() % 90) / 100.0;
cairo_t *cr;
int i;
double t, dt = 2 * M_PI / (petal_count * 2);
double x1, y1, x2, y2, x3, y3;
cr = cairo_create(surface);
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
cairo_set_source_rgba(cr, 0, 0, 0, 0);
cairo_paint(cr);
cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
cairo_translate(cr, width / 2, height / 2);
cairo_move_to(cr, cos(0) * r1, sin(0) * r1);
for (t = 0, i = 0; i < petal_count; i++, t += dt * 2) {
x1 = cos(t) * r1;
y1 = sin(t) * r1;
x2 = cos(t + dt) * r2;
y2 = sin(t + dt) * r2;
x3 = cos(t + 2 * dt) * r1;
y3 = sin(t + 2 * dt) * r1;
cairo_curve_to(cr,
x1 - y1 * u, y1 + x1 * u,
x2 + y2 * v, y2 - x2 * v,
x2, y2);
cairo_curve_to(cr,
x2 - y2 * v, y2 + x2 * v,
x3 + y3 * u, y3 - x3 * u,
x3, y3);
}
cairo_close_path(cr);
set_random_color(cr);
cairo_fill_preserve(cr);
set_random_color(cr);
cairo_stroke(cr);
cairo_destroy(cr);
}
static void
resize_handler(struct widget *widget,
int32_t width, int32_t height, void *data)
{
struct flower *flower = data;
/* Dont resize me */
widget_set_size(flower->widget, flower->width, flower->height);
}
static void
redraw_handler(struct widget *widget, void *data)
{
struct flower *flower = data;
cairo_surface_t *surface;
surface = window_get_surface(flower->window);
if (surface == NULL ||
cairo_surface_status(surface) != CAIRO_STATUS_SUCCESS) {
fprintf(stderr, "failed to create cairo egl surface\n");
return;
}
draw_stuff(surface, flower->width, flower->height);
cairo_surface_destroy(surface);
}
static void
button_handler(struct widget *widget,
struct input *input, uint32_t time,
uint32_t button, enum wl_pointer_button_state state, void *data)
{
struct flower *flower = data;
switch (button) {
case BTN_LEFT:
if (state == WL_POINTER_BUTTON_STATE_PRESSED)
window_move(flower->window, input,
display_get_serial(flower->display));
break;
case BTN_MIDDLE:
if (state == WL_POINTER_BUTTON_STATE_PRESSED)
widget_schedule_redraw(widget);
break;
case BTN_RIGHT:
if (state == WL_POINTER_BUTTON_STATE_PRESSED)
window_show_frame_menu(flower->window, input, time);
break;
}
}
static void
touch_down_handler(struct widget *widget, struct input *input,
uint32_t serial, uint32_t time, int32_t id,
float x, float y, void *data)
{
struct flower *flower = data;
window_move(flower->window, input, display_get_serial(flower->display));
}
int main(int argc, char *argv[])
{
struct flower flower;
struct display *d;
struct timeval tv;
d = display_create(&argc, argv);
if (d == NULL) {
fprintf(stderr, "failed to create display: %m\n");
return -1;
}
gettimeofday(&tv, NULL);
srandom(tv.tv_usec);
flower.width = 200;
flower.height = 200;
flower.display = d;
flower.window = window_create(d);
flower.widget = window_add_widget(flower.window, &flower);
window_set_title(flower.window, "Flower");
widget_set_resize_handler(flower.widget, resize_handler);
widget_set_redraw_handler(flower.widget, redraw_handler);
widget_set_button_handler(flower.widget, button_handler);
widget_set_default_cursor(flower.widget, CURSOR_HAND1);
widget_set_touch_down_handler(flower.widget, touch_down_handler);
window_schedule_resize(flower.window, flower.width, flower.height);
display_run(d);
return 0;
}
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