source: mainline/uspace/app/vlaunch/vlaunch.c@ 6bcecc2

/*
 * Copyright (c) 2012 Petr Koupy
 * 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 vlaunch
 * @{
 */
/** @file
 */

#include <stdbool.h>
#include <errno.h>
#include <stdio.h>
#include <malloc.h>
#include <io/pixel.h>
#include <task.h>
#include <str.h>
#include <str_error.h>
#include <loc.h>
#include <fibril_synch.h>
#include <io/pixel.h>
#include <device/led_dev.h>

#include <window.h>
#include <grid.h>
#include <button.h>
#include <label.h>
#include <canvas.h>

#include <surface.h>
#include <source.h>
#include <drawctx.h>
#include <codec/tga.h>

#include "images.h"

#define NAME  "vlaunch"

#define LOGO_WIDTH   196
#define LOGO_HEIGHT  66

#define PERIOD  1000000
#define COLORS  7

static char *winreg = NULL;
static fibril_timer_t *timer = NULL;
static list_t led_devs;

static pixel_t colors[COLORS] = {
        PIXEL(0xff, 0xff, 0x00, 0x00),
        PIXEL(0xff, 0x00, 0xff, 0x00),
        PIXEL(0xff, 0x00, 0x00, 0xff),
        PIXEL(0xff, 0xff, 0xff, 0x00),
        PIXEL(0xff, 0xff, 0x00, 0xff),
        PIXEL(0xff, 0x00, 0xff, 0xff),
        PIXEL(0xff, 0xff, 0xff, 0xff)
};

static unsigned int color = 0;

typedef struct {
        link_t link;
        service_id_t svc_id;
        async_sess_t *sess;
} led_dev_t;

static int app_launch(const char *app)
{
        printf("%s: Spawning %s %s \n", NAME, app, winreg);
        
        task_id_t id;
        int rc = task_spawnl(&id, app, app, winreg, NULL);
        if (rc != EOK) {
                printf("%s: Error spawning %s %s (%s)\n", NAME, app,
                    winreg, str_error(rc));
                return -1;
        }
        
        task_exit_t texit;
        int retval;
        rc = task_wait(id, &texit, &retval);
        if ((rc != EOK) || (texit != TASK_EXIT_NORMAL)) {
                printf("%s: Error retrieving retval from %s (%s)\n", NAME,
                    app, str_error(rc));
                return -1;
        }
        
        return retval;
}

static void on_vterm(widget_t *widget, void *data)
{
        app_launch("/app/vterm");
}

static void on_vdemo(widget_t *widget, void *data)
{
        app_launch("/app/vdemo");
}

static void on_vlaunch(widget_t *widget, void *data)
{
        app_launch("/app/vlaunch");
}

static void timer_callback(void *data)
{
        pixel_t next_color = colors[color];
        
        color++;
        if (color >= COLORS)
                color = 0;
        
        list_foreach(led_devs, link, led_dev_t, dev) {
                if (dev->sess)
                        led_dev_color_set(dev->sess, next_color);
        }
        
        fibril_timer_set(timer, PERIOD, timer_callback, NULL);
}

static void loc_callback(void)
{
        category_id_t led_cat;
        int rc = loc_category_get_id("led", &led_cat, IPC_FLAG_BLOCKING);
        if (rc != EOK)
                return;
        
        service_id_t *svcs;
        size_t count;
        rc = loc_category_get_svcs(led_cat, &svcs, &count);
        if (rc != EOK)
                return;
        
        for (size_t i = 0; i < count; i++) {
                bool known = false;
                
                /* Determine whether we already know this device. */
                list_foreach(led_devs, link, led_dev_t, dev) {
                        if (dev->svc_id == svcs[i]) {
                                known = true;
                                break;
                        }
                }
                
                if (!known) {
                        led_dev_t *dev = (led_dev_t *) calloc(1, sizeof(led_dev_t));
                        if (!dev)
                                continue;
                        
                        link_initialize(&dev->link);
                        dev->svc_id = svcs[i];
                        dev->sess = loc_service_connect(EXCHANGE_SERIALIZE, svcs[i], 0);
                        
                        list_append(&dev->link, &led_devs);
                }
        }
        
        // FIXME: Handle LED device removal
        
        free(svcs);
}

int main(int argc, char *argv[])
{
        if (argc < 2) {
                printf("Compositor server not specified.\n");
                return 1;
        }
        
        list_initialize(&led_devs);
        int rc = loc_register_cat_change_cb(loc_callback);
        if (rc != EOK) {
                printf("Unable to register callback for device discovery.\n");
                return 1;
        }
        
        timer = fibril_timer_create();
        if (!timer) {
                printf("Unable to create timer.\n");
                return 1;
        }
        
        surface_t *logo = decode_tga((void *) helenos_tga, helenos_tga_size, 0);
        if (!logo) {
                printf("Unable to decode logo.\n");
                return 1;
        }
        
        winreg = argv[1];
        window_t *main_window = window_open(argv[1], true, true, "vlaunch");
        if (!main_window) {
                printf("Cannot open main window.\n");
                return 1;
        }
        
        pixel_t grd_bg = PIXEL(255, 255, 255, 255);
        
        pixel_t btn_bg = PIXEL(255, 255, 255, 255);
        pixel_t btn_fg = PIXEL(255, 186, 186, 186);
        pixel_t btn_text = PIXEL(255, 0, 0, 0);
        
        pixel_t lbl_bg = PIXEL(255, 255, 255, 255);
        pixel_t lbl_text = PIXEL(255, 0, 0, 0);
        
        canvas_t *logo_canvas = create_canvas(NULL, LOGO_WIDTH, LOGO_HEIGHT,
            logo);
        label_t *lbl_caption = create_label(NULL, "Launch application:", 16,
            lbl_bg, lbl_text);
        button_t *btn_vterm = create_button(NULL, "vterm", 16, btn_bg,
            btn_fg, btn_text);
        button_t *btn_vdemo = create_button(NULL, "vdemo", 16, btn_bg,
            btn_fg, btn_text);
        button_t *btn_vlaunch = create_button(NULL, "vlaunch", 16, btn_bg,
            btn_fg, btn_text);
        grid_t *grid = create_grid(window_root(main_window), 1, 5, grd_bg);
        
        if ((!logo_canvas) || (!lbl_caption) || (!btn_vterm) ||
            (!btn_vdemo) || (!btn_vlaunch) || (!grid)) {
                window_close(main_window);
                printf("Cannot create widgets.\n");
                return 1;
        }
        
        sig_connect(&btn_vterm->clicked, NULL, on_vterm);
        sig_connect(&btn_vdemo->clicked, NULL, on_vdemo);
        sig_connect(&btn_vlaunch->clicked, NULL, on_vlaunch);
        
        grid->add(grid, &logo_canvas->widget, 0, 0, 1, 1);
        grid->add(grid, &lbl_caption->widget, 0, 1, 1, 1);
        grid->add(grid, &btn_vterm->widget, 0, 2, 1, 1);
        grid->add(grid, &btn_vdemo->widget, 0, 3, 1, 1);
        grid->add(grid, &btn_vlaunch->widget, 0, 4, 1, 1);
        
        window_resize(main_window, 0, 0, 210, 130 + LOGO_HEIGHT,
            WINDOW_PLACEMENT_RIGHT | WINDOW_PLACEMENT_TOP);
        window_exec(main_window);
        
        fibril_timer_set(timer, PERIOD, timer_callback, NULL);
        
        task_retval(0);
        async_manager();
        
        return 0;
}

/** @}
 */