/* $Id: gui_softkeyboard.c,v 1.2 2013/03/09 00:02:30 steffen Exp $ */
/***************************************************************************
 *            gui_softkeyboard.c
 *  
 *  Copyright (C) 2013  Steffen Pohle
 *  steffen@gulpe.de
 ***************************************************************************
 * softkeyboard: self written softkeyboard.
 ***************************************************************************/

/* 
 * This program 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, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * main.c 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 "osmroute.h"
#include "draw.h"
#include "gui.h"
#include "system.h"

GUISoftkeyboard *softkeyb = NULL;

void gui_softkeyb_getpos (int row, int btnnr, int *x1, int *x2, int *y1, int *y2);


void gui_softkeyb_show (int enable) {
	/* keys which are displayed.. */
	char line[GUI_SOFTKEYB_MODE_MAX][GUI_SOFTKEYB_X][GUI_SOFTKEYB_X] = {
		{ 	"qwertzuiop?",
			"asdfghjkl??",
			"yxcvbnm,.-_" },
		{ 	"QWERTZUIOP?",
			"ASDFGHIKL??",
			"YXCVBNM;:#+" },
		{ 	"0123456789=",
			"           ",
			"           " }};
	int i, j;

	/* disable software keyboard */
	if (cfg.softkeyboard == 0 || enable == 0) {
		if (softkeyb) softkeyb->enabled = FALSE;
		return;
	}

	/* check for allocation.. */
	if (softkeyb == NULL) {
		softkeyb = (GUISoftkeyboard*) ml_malloc (sizeof (GUISoftkeyboard));
		memset (softkeyb, 0x0, sizeof (GUISoftkeyboard));
	}

	/* reset data */
	for (i = 0; i < GUI_SOFTKEYB_MODE_MAX; i++) for (j = 0; j < 3; j++)
		strncpy (softkeyb->keys[i][j], line[i][j], GUI_SOFTKEYB_X);

	softkeyb->enabled = TRUE;
	softkeyb->mode = GUI_SOFTKEYB_MODE_NORM;
};


/* only preparing the screen image... copying to the screen will be done later... */
static float _linepos[2][4] = { {  5.0, 25.0, 45.0, 65.0 },
								{ 20.0, 40.0, 60.0, 95.0 } };
static float _btnpos[2][4] = { {  5.0, 20.0, 35.0, 65.0 },
							   { 15.0, 30.0, 60.0, 95.0 } };

void gui_softkeyb_getpos (int row, int btnnr, int *x1, int *y1, int *x2, int *y2) {
	if (row < 3) {
		*x1 = 5 + (btnnr * (softkeyb->screen->width - 10)) / GUI_SOFTKEYB_X;
		*x2 = 5 + ((btnnr + 1) * (softkeyb->screen->width - 10)) / GUI_SOFTKEYB_X;
		*y1 = (_linepos[0][row] * softkeyb->screen->height)/100;
		*y2 = (_linepos[1][row] * softkeyb->screen->height)/100;
	}
};

void gui_softkeyb_draw () {
	struct line_style ls;
	int i, j, x1, x2, y1, y2;

	if (softkeyb == NULL || gfx_screensize.x < 0 || softkeyb->enabled == FALSE) return;
	if (softkeyb->screen == NULL || softkeyb->screen->width != gfx_screensize.x) {
		if (softkeyb->screen) gfx_img_free (softkeyb->screen);
		softkeyb->screen = gfx_img_alloc (gfx_screensize.x, gfx_screensize.y * 0.8);
	}

	/* setup the lines... */
	for (j = 0; j < 2; j++) for (i = 0; i < 4; i++) {
			softkeyb->linepos[j][i] = _linepos[j][i] * softkeyb->screen->width;
			softkeyb->btnpos[j][i] = _btnpos[j][i] * softkeyb->screen->height;
		}

	/* draw border */
	ls.c = color[COLOR_white][2];
	ls.width = 1;
	gfx_clear (softkeyb->screen, &color[COLOR_white][1]);
	draw_rectangle (softkeyb->screen, 1, 1, softkeyb->screen->width-2, softkeyb->screen->height-2, ls);

	/* draw 3 key rows.. */
	ls.c = color[COLOR_blue][2];
	ls.width = 1;
	for (j = 0; j < 3; j++) {
		for (i = 0; i < GUI_SOFTKEYB_X; i++) {
			gui_softkeyb_getpos (j, i, &x1, &y1, &x2, &y2);
			draw_rectangle (softkeyb->screen, x1, y1, x2, y2, ls);
		}
	}

	/* draw the last keys */

};