matchbox-keyboard-row.c

Linux系统上的一款屏幕软键盘

/* 
 *  Matchbox Keyboard - A lightweight software keyboard.
 *
 *  Authored By Matthew Allum <[e-mail]>
 *
 *  Copyright (c) 2005 OpenedHand Ltd - http://o-hand.com
 *
 *  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 2, or (at your option)
 *  any later version.
 *
 *  This program 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.
 *
 */

#include "matchbox-keyboard.h"

struct MBKeyboardRow
{
  MBKeyboard       *kbd;
  List             *keys;

  int               alloc_x, alloc_y;
};

MBKeyboardRow*
mb_kbd_row_new(MBKeyboard *kbd)
{
  MBKeyboardRow *row = NULL;

  row = util_malloc0(sizeof(MBKeyboardRow));
  row->kbd = kbd;

  return row;
}

void
mb_kbd_row_set_x(MBKeyboardRow *row, int x)
{
  row->alloc_x = x;
}

void
mb_kbd_row_set_y(MBKeyboardRow *row, int y)
{
  row->alloc_y = y;
}

int 
mb_kbd_row_x (MBKeyboardRow *row) 
{ 
  return row->alloc_x;
}

int 
mb_kbd_row_y(MBKeyboardRow *row) 
{
  return row->alloc_y;
}

int 
mb_kbd_row_height(MBKeyboardRow *row) 
{
  List          *key_item;

  /* XX this is a little crazed 
   * We avoid keys with 0 height - spacers or non allocated extended ones
  */

  mb_kbd_row_for_each_key(row, key_item)
    {
      if (!mb_kbd_is_extended(row->kbd) 
	  && mb_kbd_key_get_extended(key_item->data))
	continue;


      if (mb_kbd_key_height(key_item->data) > 0)
	return mb_kbd_key_height(key_item->data);
    }

  return 0;
}

int 
mb_kbd_row_width(MBKeyboardRow *row) 
{
  List *key_item;
  int   result;

  /* XXX we should cache this result somehow as locate_key calls this */

  result = mb_kbd_col_spacing(row->kbd);

  
  mb_kbd_row_for_each_key(row, key_item) 
   {
      MBKeyboardKey *key = key_item->data;
      
      if (!mb_kbd_is_extended(row->kbd) 
	  && mb_kbd_key_get_extended(key))
	continue;

      result += (mb_kbd_key_width(key) + mb_kbd_col_spacing(row->kbd));
    }

  return result;
}

int 
mb_kbd_row_base_width(MBKeyboardRow *row) 
{
  List *key_item;
  int   result;

  result = mb_kbd_col_spacing(row->kbd);

  mb_kbd_row_for_each_key(row, key_item) 
    {
      MBKeyboardKey *key = key_item->data;
      
      if (!mb_kbd_is_extended(row->kbd) 
	  && mb_kbd_key_get_extended(key))
	continue;

      result += (mb_kbd_key_width(key) 
		 + mb_kbd_col_spacing(row->kbd) 
		 - mb_kbd_key_get_extra_width_pad(key));

    }

  return result;
}

void
mb_kbd_row_append_key(MBKeyboardRow *row, MBKeyboardKey *key)
{
  row->keys = util_list_append(row->keys, (pointer)key);

  mb_kbd_key_set_row(key, row);
}

List*
mb_kdb_row_keys(MBKeyboardRow *row)
{
  return util_list_get_first(row->keys);
}