osk.c

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/*
 * Copyright 2010 Vincent Sanders <vince@simtec.co.uk>
 *
 * Framebuffer windowing toolkit on screen keyboard.
 *
 * This file is part of NetSurf, http://www.netsurf-browser.org/
 *
 * NetSurf is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * NetSurf is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#include <stdbool.h>
#include <limits.h>
 
#include <libnsfb.h>
#include <libnsfb_plot.h>
#include <libnsfb_event.h>
#include <libnsfb_cursor.h>
 
#include "utils/log.h"
#include "netsurf/browser_window.h"
 
#include "framebuffer/gui.h"
#include "framebuffer/fbtk.h"
#include "framebuffer/image_data.h"
 
#include "widget.h"
 
struct kbd_button_s {
        int x;
        int y;
        int w;
        int h;
        const char *t;
        enum nsfb_key_code_e keycode;
};
 
#define KEYCOUNT 58
 
static struct kbd_button_s kbdbase[KEYCOUNT] = {
        {   0,   0,  20,  15, "`", NSFB_KEY_BACKQUOTE},
        {  20,   0,  20,  15, "1", NSFB_KEY_1},
        {  40,   0,  20,  15, "2", NSFB_KEY_2},
        {  60,   0,  20,  15, "3", NSFB_KEY_3},
        {  80,   0,  20,  15, "4", NSFB_KEY_4},
        { 100,   0,  20,  15, "5", NSFB_KEY_5},
        { 120,   0,  20,  15, "6", NSFB_KEY_6},
        { 140,   0,  20,  15, "7", NSFB_KEY_7},
        { 160,   0,  20,  15, "8", NSFB_KEY_8},
        { 180,   0,  20,  15, "9", NSFB_KEY_9},
        { 200,   0,  20,  15, "0", NSFB_KEY_0},
        { 220,   0,  20,  15, "-", NSFB_KEY_MINUS},
        { 240,   0,  20,  15, "=", NSFB_KEY_EQUALS},
        { 260,   0,  40,  15, "\xe2\x8c\xab", NSFB_KEY_BACKSPACE},
        {   0,  15,  30,  15, "\xe2\x86\xb9", NSFB_KEY_TAB},
        {  30,  15,  20,  15, "q", NSFB_KEY_q},
        {  50,  15,  20,  15, "w", NSFB_KEY_w},
        {  70,  15,  20,  15, "e", NSFB_KEY_e},
        {  90,  15,  20,  15, "r", NSFB_KEY_r},
        { 110,  15,  20,  15, "t", NSFB_KEY_t},
        { 130,  15,  20,  15, "y", NSFB_KEY_y},
        { 150,  15,  20,  15, "u", NSFB_KEY_u},
        { 170,  15,  20,  15, "i", NSFB_KEY_i},
        { 190,  15,  20,  15, "o", NSFB_KEY_o},
        { 210,  15,  20,  15, "p", NSFB_KEY_p},
        { 230,  15,  20,  15, "[", NSFB_KEY_LEFTBRACKET},
        { 250,  15,  20,  15, "]", NSFB_KEY_RIGHTBRACKET},
        { 275,  15,  25,  30, "\xe2\x8f\x8e", NSFB_KEY_RETURN},
        {  35,  30,  20,  15, "a", NSFB_KEY_a},
        {  55,  30,  20,  15, "s", NSFB_KEY_s},
        {  75,  30,  20,  15, "d", NSFB_KEY_d},
        {  95,  30,  20,  15, "f", NSFB_KEY_f},
        { 115,  30,  20,  15, "g", NSFB_KEY_g},
        { 135,  30,  20,  15, "h", NSFB_KEY_h},
        { 155,  30,  20,  15, "j", NSFB_KEY_j},
        { 175,  30,  20,  15, "k", NSFB_KEY_k},
        { 195,  30,  20,  15, "l", NSFB_KEY_l},
        { 215,  30,  20,  15, ";", NSFB_KEY_SEMICOLON},
        { 235,  30,  20,  15, "'", NSFB_KEY_l},
        { 255,  30,  20,  15, "#", NSFB_KEY_HASH},
        {   0,  45,  25,  15, "\xe2\x87\xa7", NSFB_KEY_LSHIFT},
        {  25,  45,  20,  15, "\\", NSFB_KEY_SLASH},
        {  45,  45,  20,  15, "z", NSFB_KEY_z},
        {  65,  45,  20,  15, "x", NSFB_KEY_x},
        {  85,  45,  20,  15, "c", NSFB_KEY_c},
        { 105,  45,  20,  15, "v", NSFB_KEY_v},
        { 125,  45,  20,  15, "b", NSFB_KEY_b},
        { 145,  45,  20,  15, "n", NSFB_KEY_n},
        { 165,  45,  20,  15, "m", NSFB_KEY_m},
        { 185,  45,  20,  15, ",", NSFB_KEY_COMMA},
        { 205,  45,  20,  15, ".", NSFB_KEY_PERIOD},
        { 225,  45,  20,  15, "/", NSFB_KEY_BACKSLASH},
        { 245,  45,  55,  15, "\xe2\x87\xa7", NSFB_KEY_RSHIFT},
        {  40,  67, 185,  15, "", NSFB_KEY_SPACE},
        { 250,  60,  20,  15, "\xe2\x96\xb2", NSFB_KEY_UP},
        { 230,  67,  20,  15, "\xe2\x97\x80", NSFB_KEY_LEFT},
        { 270,  67,  20,  15, "\xe2\x96\xb6", NSFB_KEY_RIGHT},
        { 250,  75,  20,  15, "\xe2\x96\xbc", NSFB_KEY_DOWN},
};
 
static fbtk_widget_t *osk;
 
static int
osk_close(fbtk_widget_t *widget, fbtk_callback_info *cbi)
{
        if (cbi->event->type != NSFB_EVENT_KEY_UP)
                return 0;
 
        fbtk_set_mapping(osk, false);
 
        return 0;
}
 
static int
osk_click(fbtk_widget_t *widget, fbtk_callback_info *cbi)
{
        nsfb_event_t event;
        struct kbd_button_s *kbd_button = cbi->context;
 
        event.type = cbi->event->type;
        event.value.keycode = kbd_button->keycode;
        fbtk_input(widget, &event);
 
        return 0;
}
 
/* exported function documented in fbtk.h */
void 
fbtk_enable_oskb(fbtk_widget_t *fbtk)
{
        fbtk_widget_t *widget;
        int kloop;
        int maxx = 0;
        int maxy = 0;
        int ww;
        int wh;
        fbtk_widget_t *root = fbtk_get_root_widget(fbtk);
        int furniture_width = 18;
 
        for (kloop=0; kloop < KEYCOUNT; kloop++) {
                if ((kbdbase[kloop].x + kbdbase[kloop].w) > maxx)
                        maxx=kbdbase[kloop].x + kbdbase[kloop].w;
                if ((kbdbase[kloop].y + kbdbase[kloop].h) > maxy)
                        maxy=kbdbase[kloop].y + kbdbase[kloop].h;
        }
 
        ww = fbtk_get_width(root);
 
        /* scale window height apropriately */
        wh = (maxy * ww) / maxx;
 
        osk = fbtk_create_window(root, 0, fbtk_get_height(root) - wh, 0, wh, 0xff202020);
 
        for (kloop=0; kloop < KEYCOUNT; kloop++) {
                widget = fbtk_create_text_button(osk,
                                                 (kbdbase[kloop].x * ww) / maxx,
                                                 (kbdbase[kloop].y * ww) / maxx,
                                                 (kbdbase[kloop].w * ww) / maxx,
                                                 (kbdbase[kloop].h *ww) / maxx,
                                                 FB_FRAME_COLOUR,
                                                 FB_COLOUR_BLACK,
                                                 osk_click,
                                                 &kbdbase[kloop]);
                fbtk_set_text(widget, kbdbase[kloop].t);
        }
 
        widget = fbtk_create_button(osk,
                        fbtk_get_width(osk) - furniture_width,
                        fbtk_get_height(osk) - furniture_width,
                        furniture_width,
                        furniture_width,
                        FB_FRAME_COLOUR,
                        &osk_image,
                        osk_close,
                        NULL);
}
 
/* exported function documented in fbtk.h */
void 
map_osk(void)
{
        fbtk_set_zorder(osk, INT_MIN);
        fbtk_set_mapping(osk, true);
}
 
/*
 * Local Variables:
 * c-basic-offset:8
 * End:
 */