diff options
Diffstat (limited to 'clients/flower.c')
| -rw-r--r-- | clients/flower.c | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/clients/flower.c b/clients/flower.c new file mode 100644 index 00000000..825c833e --- /dev/null +++ b/clients/flower.c @@ -0,0 +1,198 @@ +/* + * 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 <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_touch_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; +} |