gcons.c

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/*
 * Copyright (c) 2006 Ondrej Palkovsky
 * 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.
 */

#include <ipc/fb.h>
#include <async.h>
#include <stdio.h>
#include <sys/mman.h>
#include <str.h>
#include <align.h>
#include <bool.h>

#include "console.h"
#include "gcons.h"

#define CONSOLE_TOP     66
#define CONSOLE_MARGIN  6

#define STATUS_START   110
#define STATUS_TOP     8
#define STATUS_SPACE   4
#define STATUS_WIDTH   48
#define STATUS_HEIGHT  48

#define COLOR_MAIN        0xffffff
#define COLOR_FOREGROUND  0x202020
#define COLOR_BACKGROUND  0xffffff

extern char _binary_gfx_helenos_ppm_start[0];
extern int _binary_gfx_helenos_ppm_size;
extern char _binary_gfx_nameic_ppm_start[0];
extern int _binary_gfx_nameic_ppm_size;

extern char _binary_gfx_anim_1_ppm_start[0];
extern int _binary_gfx_anim_1_ppm_size;
extern char _binary_gfx_anim_2_ppm_start[0];
extern int _binary_gfx_anim_2_ppm_size;
extern char _binary_gfx_anim_3_ppm_start[0];
extern int _binary_gfx_anim_3_ppm_size;
extern char _binary_gfx_anim_4_ppm_start[0];
extern int _binary_gfx_anim_4_ppm_size;

extern char _binary_gfx_cons_selected_ppm_start[0];
extern int _binary_gfx_cons_selected_ppm_size;
extern char _binary_gfx_cons_idle_ppm_start[0];
extern int _binary_gfx_cons_idle_ppm_size;
extern char _binary_gfx_cons_has_data_ppm_start[0];
extern int _binary_gfx_cons_has_data_ppm_size;
extern char _binary_gfx_cons_kernel_ppm_start[0];
extern int _binary_gfx_cons_kernel_ppm_size;

static bool use_gcons = false;
static sysarg_t xres;
static sysarg_t yres;

enum butstate {
        CONS_DISCONNECTED = 0,
        CONS_SELECTED,
        CONS_IDLE,
        CONS_HAS_DATA,
        CONS_KERNEL,
        CONS_DISCONNECTED_SEL,
        CONS_LAST
};

static int console_vp;
static int cstatus_vp[CONSOLE_COUNT];
static enum butstate console_state[CONSOLE_COUNT];

static int fbphone;

static int ic_pixmaps[CONS_LAST] = {-1, -1, -1, -1, -1, -1};
static int animation = -1;

static size_t active_console = 0;

static sysarg_t mouse_x = 0;
static sysarg_t mouse_y= 0;

static bool btn_pressed = false;
static sysarg_t btn_x = 0;
static sysarg_t btn_y = 0;

static void vp_switch(int vp)
{
        async_msg_1(fbphone, FB_VIEWPORT_SWITCH, vp);
}

static int vp_create(sysarg_t x, sysarg_t y, sysarg_t width, sysarg_t height)
{
        return async_req_2_0(fbphone, FB_VIEWPORT_CREATE, (x << 16) | y,
            (width << 16) | height);
}

static void clear(void)
{
        async_msg_0(fbphone, FB_CLEAR);
}

static void set_rgb_color(uint32_t fgcolor, uint32_t bgcolor)
{
        async_msg_2(fbphone, FB_SET_RGB_COLOR, fgcolor, bgcolor);
}

static void tran_putch(wchar_t ch, sysarg_t col, sysarg_t row)
{
        async_msg_3(fbphone, FB_PUTCHAR, ch, col, row);
}

static void redraw_state(size_t index)
{
        vp_switch(cstatus_vp[index]);
        
        enum butstate state = console_state[index];
        
        if (ic_pixmaps[state] != -1)
                async_msg_2(fbphone, FB_VP_DRAW_PIXMAP, cstatus_vp[index],
                    ic_pixmaps[state]);
        
        if ((state != CONS_DISCONNECTED) && (state != CONS_KERNEL)
            && (state != CONS_DISCONNECTED_SEL)) {
                
                char data[5];
                snprintf(data, 5, "%zu", index + 1);
                
                size_t i;
                for (i = 0; data[i] != 0; i++)
                        tran_putch(data[i], 2 + i, 1);
        }
}

void gcons_change_console(size_t index)
{
        if (!use_gcons)
                return;
        
        if (active_console == KERNEL_CONSOLE) {
                size_t i;
                
                for (i = 0; i < CONSOLE_COUNT; i++)
                        redraw_state(i);
                
                if (animation != -1)
                        async_msg_1(fbphone, FB_ANIM_START, animation);
        } else {
                if (console_state[active_console] == CONS_DISCONNECTED_SEL)
                        console_state[active_console] = CONS_DISCONNECTED;
                else
                        console_state[active_console] = CONS_IDLE;
                
                redraw_state(active_console);
        }
        
        active_console = index;
        
        if ((console_state[index] == CONS_DISCONNECTED)
            || (console_state[index] == CONS_DISCONNECTED_SEL))
                console_state[index] = CONS_DISCONNECTED_SEL;
        else
                console_state[index] = CONS_SELECTED;
        
        redraw_state(index);
        vp_switch(console_vp);
}

void gcons_notify_char(size_t index)
{
        if (!use_gcons)
                return;
        
        if ((index == active_console)
            || (console_state[index] == CONS_HAS_DATA))
                return;
        
        console_state[index] = CONS_HAS_DATA;
        
        if (active_console == KERNEL_CONSOLE)
                return;
        
        redraw_state(index);
        vp_switch(console_vp);
}

void gcons_notify_disconnect(size_t index)
{
        if (!use_gcons)
                return;
        
        if (index == active_console)
                console_state[index] = CONS_DISCONNECTED_SEL;
        else
                console_state[index] = CONS_DISCONNECTED;
        
        if (active_console == KERNEL_CONSOLE)
                return;
        
        redraw_state(index);
        vp_switch(console_vp);
}

void gcons_notify_connect(size_t index)
{
        if (!use_gcons)
                return;
        
        if (index == active_console)
                console_state[index] = CONS_SELECTED;
        else
                console_state[index] = CONS_IDLE;
        
        if (active_console == KERNEL_CONSOLE)
                return;
        
        redraw_state(index);
        vp_switch(console_vp);
}

void gcons_in_kernel(void)
{
        if (animation != -1)
                async_msg_1(fbphone, FB_ANIM_STOP, animation);
        
        active_console = KERNEL_CONSOLE;
        vp_switch(0);
}

static inline ssize_t limit(ssize_t a, ssize_t left, ssize_t right)
{
        if (a < left)
                a = left;
        
        if (a >= right)
                a = right - 1;
        
        return a;
}

void gcons_mouse_move(ssize_t dx, ssize_t dy)
{
        ssize_t nx = (ssize_t) mouse_x + dx;
        ssize_t ny = (ssize_t) mouse_y + dy;
        
        /* Until gcons is initalized we don't have the screen resolution */
        if (xres == 0 || yres == 0)
                return;
        
        mouse_x = (size_t) limit(nx, 0, xres);
        mouse_y = (size_t) limit(ny, 0, yres);
        
        if (active_console != KERNEL_CONSOLE)
                async_msg_2(fbphone, FB_POINTER_MOVE, mouse_x, mouse_y);
}

static int gcons_find_conbut(sysarg_t x, sysarg_t y)
{
        sysarg_t status_start = STATUS_START + (xres - 800) / 2;
        
        if ((y < STATUS_TOP) || (y >= STATUS_TOP + STATUS_HEIGHT))
                return -1;
        
        if (x < status_start)
                return -1;
        
        if (x >= status_start + (STATUS_WIDTH + STATUS_SPACE) * CONSOLE_COUNT)
                return -1;
        
        if (((x - status_start) % (STATUS_WIDTH + STATUS_SPACE)) < STATUS_SPACE)
                return -1;
        
        sysarg_t btn = (x - status_start) / (STATUS_WIDTH + STATUS_SPACE);
        
        if (btn < CONSOLE_COUNT)
                return btn;
        
        return -1;
}

int gcons_mouse_btn(bool state)
{
        /* Ignore mouse clicks if no buttons
           are drawn at all */
        if (xres < 800)
                return -1;
        
        if (state) {
                int conbut = gcons_find_conbut(mouse_x, mouse_y);
                if (conbut != -1) {
                        btn_pressed = true;
                        btn_x = mouse_x;
                        btn_y = mouse_y;
                }
                return -1;
        }
        
        if ((!state) && (!btn_pressed))
                return -1;
        
        btn_pressed = false;
        
        int conbut = gcons_find_conbut(mouse_x, mouse_y);
        if (conbut == gcons_find_conbut(btn_x, btn_y))
                return conbut;
        
        return -1;
}

static void draw_pixmap(char *logo, size_t size, sysarg_t x, sysarg_t y)
{
        /* Create area */
        char *shm = mmap(NULL, size, PROTO_READ | PROTO_WRITE, MAP_SHARED |
            MAP_ANONYMOUS, 0, 0);
        if (shm == MAP_FAILED)
                return;
        
        memcpy(shm, logo, size);
        
        /* Send area */
        int rc = async_req_1_0(fbphone, FB_PREPARE_SHM, (sysarg_t) shm);
        if (rc)
                goto exit;
        
        rc = async_share_out_start(fbphone, shm, PROTO_READ);
        if (rc)
                goto drop;
        
        /* Draw logo */
        async_msg_2(fbphone, FB_DRAW_PPM, x, y);
        
drop:
        /* Drop area */
        async_msg_0(fbphone, FB_DROP_SHM);
        
exit:
        /* Remove area */
        munmap(shm, size);
}

void gcons_redraw_console(void)
{
        if (!use_gcons)
                return;
        
        vp_switch(0);
        set_rgb_color(COLOR_MAIN, COLOR_MAIN);
        clear();
        draw_pixmap(_binary_gfx_helenos_ppm_start,
            (size_t) &_binary_gfx_helenos_ppm_size, xres - 66, 2);
        draw_pixmap(_binary_gfx_nameic_ppm_start,
            (size_t) &_binary_gfx_nameic_ppm_size, 5, 17);
        
        unsigned int i;
        for (i = 0; i < CONSOLE_COUNT; i++)
                redraw_state(i);
        
        vp_switch(console_vp);
}

static int make_pixmap(char *data, size_t size)
{
        /* Create area */
        char *shm = mmap(NULL, size, PROTO_READ | PROTO_WRITE, MAP_SHARED |
            MAP_ANONYMOUS, 0, 0);
        if (shm == MAP_FAILED)
                return -1;
        
        memcpy(shm, data, size);
        
        int pxid = -1;
        
        /* Send area */
        int rc = async_req_1_0(fbphone, FB_PREPARE_SHM, (sysarg_t) shm);
        if (rc)
                goto exit;
        
        rc = async_share_out_start(fbphone, shm, PROTO_READ);
        if (rc)
                goto drop;
        
        /* Obtain pixmap */
        rc = async_req_0_0(fbphone, FB_SHM2PIXMAP);
        if (rc < 0)
                goto drop;
        
        pxid = rc;
        
drop:
        /* Drop area */
        async_msg_0(fbphone, FB_DROP_SHM);
        
exit:
        /* Remove area */
        munmap(shm, size);
        
        return pxid;
}

static void make_anim(void)
{
        int an = async_req_1_0(fbphone, FB_ANIM_CREATE,
            cstatus_vp[KERNEL_CONSOLE]);
        if (an < 0)
                return;
        
        int pm = make_pixmap(_binary_gfx_anim_1_ppm_start,
            (size_t) &_binary_gfx_anim_1_ppm_size);
        async_msg_2(fbphone, FB_ANIM_ADDPIXMAP, an, pm);
        
        pm = make_pixmap(_binary_gfx_anim_2_ppm_start,
            (size_t) &_binary_gfx_anim_2_ppm_size);
        async_msg_2(fbphone, FB_ANIM_ADDPIXMAP, an, pm);
        
        pm = make_pixmap(_binary_gfx_anim_3_ppm_start,
            (size_t) &_binary_gfx_anim_3_ppm_size);
        async_msg_2(fbphone, FB_ANIM_ADDPIXMAP, an, pm);
        
        pm = make_pixmap(_binary_gfx_anim_4_ppm_start,
            (size_t) &_binary_gfx_anim_4_ppm_size);
        async_msg_2(fbphone, FB_ANIM_ADDPIXMAP, an, pm);
        
        async_msg_1(fbphone, FB_ANIM_START, an);
        
        animation = an;
}

void gcons_init(int phone)
{
        fbphone = phone;
        
        int rc = async_req_0_2(phone, FB_GET_RESOLUTION, &xres, &yres);
        if (rc)
                return;
        
        if ((xres < 800) || (yres < 600))
                return;
        
        /* Create console viewport */
        
        /* Align width & height to character size */
        console_vp = vp_create(CONSOLE_MARGIN, CONSOLE_TOP,
            ALIGN_DOWN(xres - 2 * CONSOLE_MARGIN, 8),
            ALIGN_DOWN(yres - (CONSOLE_TOP + CONSOLE_MARGIN), 16));
        
        if (console_vp < 0)
                return;
        
        /* Create status buttons */
        sysarg_t status_start = STATUS_START + (xres - 800) / 2;
        size_t i;
        for (i = 0; i < CONSOLE_COUNT; i++) {
                cstatus_vp[i] = vp_create(status_start + CONSOLE_MARGIN +
                    i * (STATUS_WIDTH + STATUS_SPACE), STATUS_TOP,
                    STATUS_WIDTH, STATUS_HEIGHT);
                
                if (cstatus_vp[i] < 0)
                        return;
                
                vp_switch(cstatus_vp[i]);
                set_rgb_color(COLOR_FOREGROUND, COLOR_BACKGROUND);
        }
        
        /* Initialize icons */
        ic_pixmaps[CONS_SELECTED] =
            make_pixmap(_binary_gfx_cons_selected_ppm_start,
            (size_t) &_binary_gfx_cons_selected_ppm_size);
        ic_pixmaps[CONS_IDLE] =
            make_pixmap(_binary_gfx_cons_idle_ppm_start,
            (size_t) &_binary_gfx_cons_idle_ppm_size);
        ic_pixmaps[CONS_HAS_DATA] =
            make_pixmap(_binary_gfx_cons_has_data_ppm_start,
            (size_t) &_binary_gfx_cons_has_data_ppm_size);
        ic_pixmaps[CONS_DISCONNECTED] =
            make_pixmap(_binary_gfx_cons_idle_ppm_start,
            (size_t) &_binary_gfx_cons_idle_ppm_size);
        ic_pixmaps[CONS_KERNEL] =
            make_pixmap(_binary_gfx_cons_kernel_ppm_start,
            (size_t) &_binary_gfx_cons_kernel_ppm_size);
        ic_pixmaps[CONS_DISCONNECTED_SEL] = ic_pixmaps[CONS_SELECTED];
        
        make_anim();
        
        use_gcons = true;
        console_state[0] = CONS_DISCONNECTED_SEL;
        console_state[KERNEL_CONSOLE] = CONS_KERNEL;
        
        vp_switch(console_vp);
}

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