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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 <ipc/ipc.h>

#include <async.h>

#include <stdio.h>

#include <sys/mman.h>

#include <string.h>

#include <align.h>

#include "console.h"

#include "gcons.h"

#define CONSOLE_TOP      65

#define CONSOLE_MARGIN   6

#define STATUS_START    110

#define STATUS_TOP      8

#define STATUS_SPACE    3

#define STATUS_WIDTH    48

#define STATUS_HEIGHT   48

#define MAIN_COLOR      0xffffff

static int use_gcons = 0;

static ipcarg_t xres,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 int cstat_row, cstat_col; /* Size of cstatus buttons */

static enum butstate console_state[CONSOLE_COUNT];

static int fbphone;

/** List of pixmaps identifying these icons */

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

static int active_console = 0;

static void vp_switch(int vp)

{

    async_msg(fbphone,FB_VIEWPORT_SWITCH, vp);

}

/** Create view port */

static int vp_create(unsigned int x, unsigned int y,

             unsigned int width, unsigned int height)

{

    /* Init function, use ipc_call_sync */

    return ipc_call_sync_2(fbphone, FB_VIEWPORT_CREATE,

                   (x << 16) | y, (width << 16) | height,

                   NULL, NULL);

}

static void clear(void)

{

    async_msg(fbphone, FB_CLEAR, 0);

}

static void set_style(int fgcolor, int bgcolor)

{

    async_msg_2(fbphone, FB_SET_STYLE, fgcolor, bgcolor);

}

/** Transparent putchar */

static void tran_putch(char c, int row, int col)

{

    async_msg_3(fbphone, FB_TRANS_PUTCHAR, c, row, col);

}

/** Redraw the button showing state of a given console */

static void redraw_state(int consnum)

{

    char data[5];

    int i;

    enum butstate state = console_state[consnum];

    vp_switch(cstatus_vp[consnum]);

    if (ic_pixmaps[state] != -1)

        async_msg_2(fbphone, FB_VP_DRAW_PIXMAP, cstatus_vp[consnum], ic_pixmaps[state]);

    if (state != CONS_DISCONNECTED && state != CONS_KERNEL && state != CONS_DISCONNECTED_SEL) {

        snprintf(data, 5, "%d", consnum+1);

        for (i=0;data[i];i++)

            tran_putch(data[i], 1, 2+i);

    }

}

/** Notification run on changing console (except kernel console) */

void gcons_change_console(int consnum)

{

    int i;

    if (!use_gcons)

        return;

    if (active_console == KERNEL_CONSOLE) {

        for (i=0; i < CONSOLE_COUNT; i++)

            redraw_state(i);

    } 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 = consnum;

    if (console_state[consnum] == CONS_DISCONNECTED) {

        console_state[consnum] = CONS_DISCONNECTED_SEL;

        redraw_state(consnum);

    } else

        console_state[consnum] = CONS_SELECTED;

    redraw_state(consnum);

    vp_switch(console_vp);

}

/** Notification function that gets called on new output to virtual console */

void gcons_notify_char(int consnum)

{

    if (!use_gcons)

        return;

    if (consnum == active_console || console_state[consnum] == CONS_HAS_DATA)

        return;

    console_state[consnum] = CONS_HAS_DATA;

    if (active_console == KERNEL_CONSOLE)

        return;

    redraw_state(consnum);

    vp_switch(console_vp);

}

/** Notification function called on service disconnect from console */

void gcons_notify_disconnect(int consnum)

{

    if (!use_gcons)

        return;

    if (active_console == consnum)

        console_state[consnum] = CONS_DISCONNECTED_SEL;

    else

        console_state[consnum] = CONS_DISCONNECTED;

    if (active_console == KERNEL_CONSOLE)

        return;

    redraw_state(consnum);

    vp_switch(console_vp);

}

/** Notification function called on console connect */

void gcons_notify_connect(int consnum)

{

    if (!use_gcons)

        return;

    if (active_console == consnum)

        console_state[consnum] = CONS_SELECTED;

    else

        console_state[consnum] = CONS_IDLE;

    if (active_console == KERNEL_CONSOLE)

        return;

    redraw_state(consnum);

    vp_switch(console_vp);

}

/** Change to kernel console */

void gcons_in_kernel(void)

{

    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 = KERNEL_CONSOLE; /* Set to kernel console */

    vp_switch(0);

}

/** Draw a PPM pixmap to framebuffer

 *

 * @param logo Pointer to PPM data

 * @param size Size of PPM data

 * @param x Coordinate of upper left corner

 * @param y Coordinate of upper left corner

 */

static void draw_pixmap(char *logo, size_t size, int x, int y)

{

    char *shm;

    int rc;

    /* Create area */

    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 */

    rc = async_req_2(fbphone, FB_PREPARE_SHM, (ipcarg_t)shm, 0, NULL, NULL);

    if (rc)

        goto exit;

    rc = async_req_3(fbphone, IPC_M_AS_AREA_SEND, (ipcarg_t)shm, 0, PROTO_READ, NULL, NULL, NULL);

    if (rc)

        goto drop;

    /* Draw logo */

    async_msg_2(fbphone, FB_DRAW_PPM, x, y);

drop:

    /* Drop area */

    async_msg(fbphone, FB_DROP_SHM, 0);

exit:      

    /* Remove area */

    munmap(shm, size);

}

extern char _binary_helenos_ppm_start[0];

extern int _binary_helenos_ppm_size;

extern char _binary_nameic_ppm_start[0];

extern int _binary_nameic_ppm_size;

/** Redraws console graphics  */

static void gcons_redraw_console(void)

{

    int i;

    size_t hsize = (size_t)&_binary_helenos_ppm_size;

    if (!use_gcons)

        return;

    vp_switch(0);

    set_style(MAIN_COLOR, MAIN_COLOR);

    clear();

    draw_pixmap(_binary_helenos_ppm_start, (size_t)&_binary_helenos_ppm_size, xres-66, 2);

    draw_pixmap(_binary_nameic_ppm_start, (size_t)&_binary_nameic_ppm_size, 5, 17);

    for (i=0;i < CONSOLE_COUNT; i++)

        redraw_state(i);

    vp_switch(console_vp);

}

/** Creates a pixmap on framebuffer

 *

 * @param data PPM data

 * @param size PPM data size

 * @return Pixmap identification

 */

static int make_pixmap(char *data, int size)

{

    char *shm;

    int rc;

    int pxid = -1;

    /* Create area */

    shm = mmap(NULL, size, PROTO_READ | PROTO_WRITE, MAP_SHARED | MAP_ANONYMOUS, 0, 0);

    if (shm == MAP_FAILED)

        return -1;

    memcpy(shm, data, size);

    /* Send area */

    rc = async_req_2(fbphone, FB_PREPARE_SHM, (ipcarg_t)shm, 0, NULL, NULL);

    if (rc)

        goto exit;

    rc = async_req_3(fbphone, IPC_M_AS_AREA_SEND, (ipcarg_t)shm, 0, PROTO_READ, NULL, NULL, NULL);

    if (rc)

        goto drop;

    /* Obtain pixmap */

    rc = async_req(fbphone, FB_SHM2PIXMAP, 0, NULL);

    if (rc < 0)

        goto drop;

    pxid = rc;

drop:

    /* Drop area */

    async_msg(fbphone, FB_DROP_SHM, 0);

exit:      

    /* Remove area */

    munmap(shm, size);

    return pxid;

}

extern char _binary_cons_selected_ppm_start[0];

extern int _binary_cons_selected_ppm_size;

extern char _binary_cons_idle_ppm_start[0];

extern int _binary_cons_idle_ppm_size;

extern char _binary_cons_has_data_ppm_start[0];

extern int _binary_cons_has_data_ppm_size;

extern char _binary_cons_kernel_ppm_start[0];

extern int _binary_cons_kernel_ppm_size;

/** Initialize nice graphical console environment */

void gcons_init(int phone)

{

    int rc;

    int i;

    fbphone = phone;

    rc = ipc_call_sync_2(phone, FB_GET_RESOLUTION, 0, 0, &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 */

    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_style(0x202020, 0xffffff);

    }

    /* Initialize icons */

    ic_pixmaps[CONS_SELECTED] = make_pixmap(_binary_cons_selected_ppm_start,

                          (int)&_binary_cons_selected_ppm_size);

    ic_pixmaps[CONS_IDLE] = make_pixmap(_binary_cons_idle_ppm_start,

                          (int)&_binary_cons_idle_ppm_size);

    ic_pixmaps[CONS_HAS_DATA] = make_pixmap(_binary_cons_has_data_ppm_start,

                        (int)&_binary_cons_has_data_ppm_size);

    ic_pixmaps[CONS_DISCONNECTED] = make_pixmap(_binary_cons_idle_ppm_start,

                          (int)&_binary_cons_idle_ppm_size);

    ic_pixmaps[CONS_KERNEL] = make_pixmap(_binary_cons_kernel_ppm_start,

                          (int)&_binary_cons_kernel_ppm_size);

    ic_pixmaps[CONS_DISCONNECTED_SEL] = ic_pixmaps[CONS_SELECTED];

    use_gcons = 1;

    console_state[0] = CONS_DISCONNECTED_SEL;

    console_state[KERNEL_CONSOLE] = CONS_KERNEL;

    gcons_redraw_console();

}