source: mainline/uspace/app/gfxdemo/gfxdemo.c@ 00e8290

/*
 * Copyright (c) 2019 Jiri Svoboda
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/** @addtogroup gfxdemo
 * @{
 */
/** @file Graphic demo
 */

#include <canvas.h>
#include <draw/surface.h>
#include <fibril.h>
#include <gfx/backend/canvas.h>
#include <gfx/backend/console.h>
#include <gfx/color.h>
#include <gfx/render.h>
#include <io/console.h>
#include <stdlib.h>
#include <str.h>
#include <window.h>

/** Run rectangle demo on a graphic context.
 *
 * @param gc Graphic context
 */
static errno_t demo_rects(gfx_context_t *gc, int w, int h)
{
        gfx_color_t *color = NULL;
        gfx_rect_t rect;
        int i;
        errno_t rc;

        while (true) {
                rc = gfx_color_new_rgb_i16(rand() % 0x10000, rand() % 0x10000,
                    rand() % 0x10000, &color);
                if (rc != EOK)
                        return rc;

                rc = gfx_set_color(gc, color);
                if (rc != EOK)
                        return rc;

                for (i = 0; i < 10; i++) {
                        rect.p0.x = rand() % (w - 1);
                        rect.p0.y = rand() % (h - 1);
                        rect.p1.x = rect.p0.x + rand() % (w - 1 - rect.p0.x);
                        rect.p1.y = rect.p0.y + rand() % (h - 1 - rect.p0.y);

                        rc = gfx_fill_rect(gc, &rect);
                        if (rc != EOK)
                                return rc;
                }

                gfx_color_delete(color);

                fibril_usleep(500 * 1000);
        }
}

/** Run demo on console. */
static errno_t demo_console(void)
{
        console_ctrl_t *con = NULL;
        console_gc_t *cgc = NULL;
        gfx_context_t *gc;
        errno_t rc;

        printf("Init console..\n");
        con = console_init(stdin, stdout);
        if (con == NULL)
                return EIO;

        printf("Create console GC\n");
        rc = console_gc_create(con, stdout, &cgc);
        if (rc != EOK)
                return rc;

        gc = console_gc_get_ctx(cgc);

        rc = demo_rects(gc, 80, 25);
        if (rc != EOK)
                return rc;

        rc = console_gc_delete(cgc);
        if (rc != EOK)
                return rc;

        return EOK;
}

/** Run demo on canvas. */
static errno_t demo_canvas(void)
{
        console_ctrl_t *con = NULL;
        canvas_gc_t *cgc = NULL;
        gfx_context_t *gc;
        window_t *window = NULL;
        pixel_t *pixbuf = NULL;
        surface_t *surface = NULL;
        canvas_t *canvas = NULL;
        int vw, vh;
        errno_t rc;

        printf("Init canvas..\n");
        con = console_init(stdin, stdout);
        if (con == NULL)
                return EIO;

        window = window_open("comp:0/winreg", NULL,
            WINDOW_MAIN | WINDOW_DECORATED, "GFX Demo");
        if (window == NULL) {
                printf("Error creating window.\n");
                return -1;
        }

        vw = 400;
        vh = 300;

        pixbuf = calloc(vw * vh, sizeof(pixel_t));
        if (pixbuf == NULL) {
                printf("Error allocating memory for pixel buffer.\n");
                return -1;
        }

        surface = surface_create(vw, vh, pixbuf, 0);
        if (surface == NULL) {
                printf("Error creating surface.\n");
                return -1;
        }

        canvas = create_canvas(window_root(window), NULL, vw, vh,
            surface);
        if (canvas == NULL) {
                printf("Error creating canvas.\n");
                return -1;
        }

//      sig_connect(&canvas->keyboard_event, NULL, wnd_keyboard_event);

        window_resize(window, 0, 0, vw + 10, vh + 30, WINDOW_PLACEMENT_ANY);
        window_exec(window);

        printf("Create canvas GC\n");
        rc = canvas_gc_create(canvas, surface, &cgc);
        if (rc != EOK)
                return rc;

        gc = canvas_gc_get_ctx(cgc);

        rc = demo_rects(gc, 400, 300);
        if (rc != EOK)
                return rc;

        rc = canvas_gc_delete(cgc);
        if (rc != EOK)
                return rc;

        return EOK;
}

static void print_syntax(void)
{
        printf("syntax: gfxdemo {canvas|console}\n");
}

int main(int argc, char *argv[])
{
        errno_t rc;

        if (argc < 2) {
                print_syntax();
                return 1;
        }

        if (str_cmp(argv[1], "console") == 0) {
                rc = demo_console();
                if (rc != EOK)
                        return 1;
        } else if (str_cmp(argv[1], "canvas") == 0) {
                rc = demo_canvas();
                if (rc != EOK)
                        return 1;
        } else {
                print_syntax();
                return 1;
        }
}

/** @}
 */