ui/inputbox.c

   1 /*
   2 THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
   3 SOFTWARE CORPORATION ("PARALLAX").  PARALLAX, IN DISTRIBUTING THE CODE TO
   4 END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
   5 ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
   6 IN USING, DISPLAYING,  AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
   7 SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
   8 FREE PURPOSES.  IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
   9 CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES.  THE END-USER UNDERSTANDS
  10 AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
  11 COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION.  ALL RIGHTS RESERVED.
  12 */
  13
  14 #ifdef HAVE_CONFIG_H
  15 #include "conf.h"
  16 #endif
  17
  18 #include <stdlib.h>
  19 #include <string.h>
  20
  21 #include "u_mem.h"
  22 #include "fix.h"
  23 #include "gr.h"
  24 #include "ui.h"
  25 #include "key.h"
  26
  27 // insert character c into string s at position p.
  28 void strcins(char *s, int p, char c)
  29 {
  30         int n;
  31         for (n = (int)strlen(s) - p; n >= 0; n--)
  32                 *(s+p+n+1) = *(s+p+n);   // Move everything over
  33         *(s+p) = c;         // then insert the character
  34 }
  35
  36 // delete n character from string s starting at position p
  37
  38 void strndel(char *s, int p, int n)
  39 {
  40         for (; (*(s+p) = *(s+p+n)) != '\0'; s++ )
  41                 *(s+p+n) = '\0';    // Delete and zero fill
  42 }
  43
  44 void ui_draw_inputbox( UI_GADGET_INPUTBOX * inputbox )
  45 {
  46         int w, h, aw;
  47
  48         if ((inputbox->status==1) || (inputbox->position != inputbox->oldposition))
  49         {
  50                 ui_mouse_hide();
  51                 gr_set_current_canvas( inputbox->canvas );
  52
  53                 if (CurWindow->keyboard_focus_gadget == (UI_GADGET *)inputbox)
  54                 {
  55                         if (inputbox->first_time)
  56                                 gr_set_fontcolor( CBLACK, CRED );
  57                         else
  58                                 gr_set_fontcolor( CRED, CBLACK );
  59                 }
  60                 else
  61                         gr_set_fontcolor( CWHITE, CBLACK );
  62
  63                 inputbox->status = 0;
  64
  65                 gr_string( 2, 2, inputbox->text );
  66                 gr_get_string_size(inputbox->text, &w, &h, &aw  );
  67
  68                 gr_setcolor( CBLACK );
  69                 gr_rect( 2+w, 0, inputbox->width-1, inputbox->height-1 );
  70
  71                 if (CurWindow->keyboard_focus_gadget == (UI_GADGET *)inputbox  && !inputbox->first_time )
  72                 {
  73                         gr_setcolor(CRED);
  74                         Vline( 2,inputbox->height-3, 2+w+1 );
  75                         Vline( 2,inputbox->height-3, 2+w+2 );
  76                 }
  77
  78                 ui_mouse_show();
  79         }
  80 }
  81
  82 UI_GADGET_INPUTBOX * ui_add_gadget_inputbox( UI_WINDOW * wnd, short x, short y, short length, short slength, char * text )
  83 {
  84         int h, w, aw, f;
  85         UI_GADGET_INPUTBOX * inputbox;
  86
  87         gr_get_string_size( NULL, &w, &h, &aw );
  88
  89         inputbox = (UI_GADGET_INPUTBOX *)ui_gadget_add( wnd, 6, x, y, x+aw*slength-1, y+h-1+4 );
  90
  91         f = 0;
  92
  93         inputbox->text = d_malloc(length + 1);
  94         strncpy( inputbox->text, text, length );
  95         inputbox->position = strlen(inputbox->text);
  96         inputbox->oldposition = inputbox->position;
  97         inputbox->width = aw*slength;
  98         inputbox->height = h+4;
  99         inputbox->length = length;
 100         inputbox->slength = slength;
 101         inputbox->pressed = 0;
 102         inputbox->first_time = 1;
 103
 104         gr_set_current_canvas( inputbox->canvas );
 105         gr_setcolor( CBLACK );
 106         gr_rect( 0, 0, inputbox->width-1, inputbox->height-1 );
 107
 108         return inputbox;
 109
 110 }
 111
 112
 113 void ui_inputbox_do( UI_GADGET_INPUTBOX * inputbox, int keypress )
 114 {
 115         unsigned char ascii;
 116         inputbox->oldposition = inputbox->position;
 117
 118         inputbox->pressed=0;
 119
 120         if (CurWindow->keyboard_focus_gadget==(UI_GADGET *)inputbox)
 121         {
 122                 switch( keypress )
 123                 {
 124                 case 0:
 125                         break;
 126                 case (KEY_LEFT):
 127                 case (KEY_BACKSP):
 128                         if (inputbox->position > 0)
 129                                 inputbox->position--;
 130                         inputbox->text[inputbox->position] = 0;
 131                         inputbox->status = 1;
 132                         if (inputbox->first_time) inputbox->first_time = 0;
 133                         break;
 134                 case (KEY_ENTER):
 135                         inputbox->pressed=1;
 136                         inputbox->status = 1;
 137                         if (inputbox->first_time) inputbox->first_time = 0;
 138                         break;
 139                 default:
 140                         ascii = key_to_ascii(keypress);
 141                         if ((ascii < 255 ) && (inputbox->position < inputbox->length-2))
 142                         {
 143                                 if (inputbox->first_time) {
 144                                         inputbox->first_time = 0;
 145                                         inputbox->position = 0;
 146                                 }
 147                                 inputbox->text[inputbox->position++] = ascii;
 148                                 inputbox->text[inputbox->position] = 0;
 149                         }
 150                         inputbox->status = 1;
 151                         break;
 152                 }
 153         } else {
 154                 inputbox->first_time = 1;
 155         }
 156
 157         last_keypress=0;
 158
 159         ui_draw_inputbox( inputbox );
 160
 161 }
 162
 163 void ui_inputbox_set_text(UI_GADGET_INPUTBOX *inputbox, char *text)
 164 {
 165         strncpy(inputbox->text, text, inputbox->length + 1);
 166         inputbox->position = strlen(text);
 167         inputbox->oldposition = inputbox->position;
 168         inputbox->status = 1;           // redraw
 169         inputbox->first_time = 1;       // select all
 170 }
 171