textscreen/txt_radiobutton.c

   1 // Emacs style mode select   -*- C++ -*-
   2 //-----------------------------------------------------------------------------
   3 //
   4 // Copyright(C) 2006 Simon Howard
   5 //
   6 // This program is free software; you can redistribute it and/or
   7 // modify it under the terms of the GNU General Public License
   8 // as published by the Free Software Foundation; either version 2
   9 // of the License, or (at your option) any later version.
  10 //
  11 // This program is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15 //
  16 // You should have received a copy of the GNU General Public License
  17 // along with this program; if not, write to the Free Software
  18 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  19 // 02111-1307, USA.
  20 //
  21
  22 #include <stdlib.h>
  23 #include <string.h>
  24
  25 #include "doomkeys.h"
  26
  27 #include "txt_radiobutton.h"
  28 #include "txt_gui.h"
  29 #include "txt_io.h"
  30 #include "txt_main.h"
  31 #include "txt_window.h"
  32
  33 static void TXT_RadioButtonSizeCalc(TXT_UNCAST_ARG(radiobutton))
  34 {
  35     TXT_CAST_ARG(txt_radiobutton_t, radiobutton);
  36
  37     // Minimum width is the string length + two spaces for padding
  38
  39     radiobutton->widget.w = strlen(radiobutton->label) + 6;
  40     radiobutton->widget.h = 1;
  41 }
  42
  43 static void TXT_RadioButtonDrawer(TXT_UNCAST_ARG(radiobutton), int selected)
  44 {
  45     TXT_CAST_ARG(txt_radiobutton_t, radiobutton);
  46     int i;
  47     int w;
  48
  49     w = radiobutton->widget.w;
  50
  51     TXT_BGColor(TXT_COLOR_BLUE, 0);
  52     TXT_FGColor(TXT_COLOR_BRIGHT_CYAN);
  53     TXT_DrawString(" (");
  54
  55     TXT_FGColor(TXT_COLOR_BRIGHT_WHITE);
  56
  57     if (*radiobutton->variable == radiobutton->value)
  58     {
  59         TXT_DrawString("\x07");
  60     }
  61     else
  62     {
  63         TXT_DrawString(" ");
  64     }
  65
  66     TXT_FGColor(TXT_COLOR_BRIGHT_CYAN);
  67
  68     TXT_DrawString(") ");
  69
  70     if (selected)
  71     {
  72         TXT_BGColor(TXT_COLOR_GREY, 0);
  73     }
  74
  75     TXT_FGColor(TXT_COLOR_BRIGHT_WHITE);
  76
  77     TXT_DrawString(radiobutton->label);
  78
  79     for (i=strlen(radiobutton->label); i < w-6; ++i)
  80     {
  81         TXT_DrawString(" ");
  82     }
  83 }
  84
  85 static void TXT_RadioButtonDestructor(TXT_UNCAST_ARG(radiobutton))
  86 {
  87     TXT_CAST_ARG(txt_radiobutton_t, radiobutton);
  88
  89     free(radiobutton->label);
  90 }
  91
  92 static int TXT_RadioButtonKeyPress(TXT_UNCAST_ARG(radiobutton), int key)
  93 {
  94     TXT_CAST_ARG(txt_radiobutton_t, radiobutton);
  95
  96     if (key == KEY_ENTER || key == ' ')
  97     {
  98         if (*radiobutton->variable != radiobutton->value)
  99         {
 100             *radiobutton->variable = radiobutton->value;
 101             TXT_EmitSignal(radiobutton, "selected");
 102         }
 103         return 1;
 104     }
 105
 106     return 0;
 107 }
 108
 109 static void TXT_RadioButtonMousePress(TXT_UNCAST_ARG(radiobutton),
 110                                       int x, int y, int b)
 111 {
 112     TXT_CAST_ARG(txt_radiobutton_t, radiobutton);
 113
 114     if (b == TXT_MOUSE_LEFT)
 115     {
 116         // Equivalent to pressing enter
 117
 118         TXT_RadioButtonKeyPress(radiobutton, KEY_ENTER);
 119     }
 120 }
 121
 122 txt_widget_class_t txt_radiobutton_class =
 123 {
 124     TXT_RadioButtonSizeCalc,
 125     TXT_RadioButtonDrawer,
 126     TXT_RadioButtonKeyPress,
 127     TXT_RadioButtonDestructor,
 128     TXT_RadioButtonMousePress,
 129     NULL,
 130 };
 131
 132 txt_radiobutton_t *TXT_NewRadioButton(char *label, int *variable, int value)
 133 {
 134     txt_radiobutton_t *radiobutton;
 135
 136     radiobutton = malloc(sizeof(txt_radiobutton_t));
 137
 138     TXT_InitWidget(radiobutton, &txt_radiobutton_class);
 139     radiobutton->label = strdup(label);
 140     radiobutton->variable = variable;
 141     radiobutton->value = value;
 142
 143     return radiobutton;
 144 }
 145
 146 void TXT_SetRadioButtonLabel(txt_radiobutton_t *radiobutton, char *value)
 147 {
 148     free(radiobutton->label);
 149     radiobutton->label = strdup(value);
 150 }
 151