toaruos/userspace/gui/demo/cairo-demo.c
2014-06-07 23:13:29 -07:00

90 lines
2.3 KiB
C

/* This file is part of ToaruOS and is released under the terms
* of the NCSA / University of Illinois License - see LICENSE.md
* Copyright (C) 2013-2014 Kevin Lange
*/
#include <math.h>
#include <stdio.h>
#include <cairo.h>
#include "lib/yutani.h"
#include "lib/graphics.h"
static yutani_t * yctx;
static yutani_window_t * window;
static gfx_context_t * ctx;
void render() {
draw_fill(ctx, rgba(0,0,0,127));
int stride = cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, window->width);
cairo_surface_t * surface = cairo_image_surface_create_for_data(ctx->buffer, CAIRO_FORMAT_ARGB32, window->width, window->height, stride);
cairo_t * cr = cairo_create(surface);
cairo_set_line_width (cr, 6);
cairo_rectangle (cr, 12, 12, 232, 70);
cairo_new_sub_path (cr); cairo_arc (cr, 64, 64, 40, 0, 2*M_PI);
cairo_new_sub_path (cr); cairo_arc_negative (cr, 192, 64, 40, 0, -2*M_PI);
cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);
cairo_set_source_rgb (cr, 0, 0.7, 0); cairo_fill_preserve (cr);
cairo_set_source_rgb (cr, 0, 0, 0); cairo_stroke (cr);
cairo_translate (cr, 0, 128);
cairo_rectangle (cr, 12, 12, 232, 70);
cairo_new_sub_path (cr); cairo_arc (cr, 64, 64, 40, 0, 2*M_PI);
cairo_new_sub_path (cr); cairo_arc_negative (cr, 192, 64, 40, 0, -2*M_PI);
cairo_set_fill_rule (cr, CAIRO_FILL_RULE_WINDING);
cairo_set_source_rgb (cr, 0, 0, 0.9); cairo_fill_preserve (cr);
cairo_set_source_rgb (cr, 0, 0, 0); cairo_stroke (cr);
cairo_surface_flush(surface);
cairo_destroy(cr);
cairo_surface_flush(surface);
cairo_surface_destroy(surface);
yutani_flip(yctx, window);
}
int main(int argc, char * argv[]) {
int width = 500;
int height = 500;
yctx = yutani_init();
window = yutani_window_create(yctx,500,500);
yutani_window_move(yctx, window, 100, 100);
ctx = init_graphics_yutani(window);
draw_fill(ctx, rgba(0,0,0,127));
render();
while (1) {
yutani_msg_t * m = yutani_poll(yctx);
if (m) {
switch (m->type) {
case YUTANI_MSG_KEY_EVENT:
{
struct yutani_msg_key_event * ke = (void*)m->data;
if (ke->event.action == KEY_ACTION_DOWN && ke->event.keycode == 'q') {
free(m);
goto done;
}
}
break;
case YUTANI_MSG_SESSION_END:
goto done;
default:
break;
}
}
free(m);
}
done:
yutani_close(yctx, window);
return 0;
}