src/button.c

   1 //
   2 // C Implementation: button
   3 //
   4 // Description:
   5 //
   6 //
   7 // Author: Tobias Glaesser <tobi.web@gmx.de>, (C) 2004
   8 //
   9 // Copyright: See COPYING file that comes with this distribution
  10 //
  11 //
  12
  13 #include <string.h>
  14 #include <stdlib.h>
  15 #include "setup.h"
  16 #include "screen.h"
  17 #include "globals.h"
  18 #include "button.h"
  19
  20 void button_load(button_type* pbutton,char* icon_file, char* info, SDLKey shortcut, int x, int y)
  21 {
  22   char filename[1024];
  23
  24   if(icon_file != NULL)
  25     {
  26       snprintf(filename, 1024, "%s/%s", DATA_PREFIX, icon_file);
  27       if(!faccessible(filename))
  28         snprintf(filename, 1024, "%s/images/icons/default-icon.png", DATA_PREFIX);
  29     }
  30   else
  31     {
  32       snprintf(filename, 1024, "%s/images/icons/default-icon.png", DATA_PREFIX);
  33     }
  34   texture_load(&pbutton->icon,filename,USE_ALPHA);
  35
  36   if(info == NULL)
  37     {
  38       pbutton->info = NULL;
  39     }
  40   else
  41     {
  42       pbutton->info = (char*) malloc(sizeof(char)*(strlen(info) + 1));
  43       strcpy(pbutton->info,info);
  44     }
  45
  46   pbutton->shortcut = shortcut;
  47
  48   pbutton->x = x;
  49   pbutton->y = y;
  50   pbutton->w = pbutton->icon.w;
  51   pbutton->h = pbutton->icon.h;
  52   pbutton->state = -1;
  53   pbutton->show_info = NO;
  54 }
  55
  56 button_type* button_create(char* icon_file, char* info, SDLKey shortcut, int x, int y)
  57 {
  58   button_type* pnew_button = (button_type*) malloc(sizeof(button_type));
  59   button_load(pnew_button,icon_file, info, shortcut, x, y);
  60   return pnew_button;
  61 }
  62
  63 void button_draw(button_type* pbutton)
  64 {
  65   fillrect(pbutton->x,pbutton->y,pbutton->w,pbutton->h,75,75,75,200);
  66   fillrect(pbutton->x+1,pbutton->y+1,pbutton->w-2,pbutton->h-2,175,175,175,200);
  67   texture_draw(&pbutton->icon,pbutton->x,pbutton->y,NO_UPDATE);
  68   if(pbutton->show_info == YES)
  69     {
  70       char str[80];
  71       if(pbutton->info)
  72         text_draw(&white_small_text, pbutton->info, pbutton->x - strlen(pbutton->info) * white_small_text.w, pbutton->y, 1, NO_UPDATE);
  73       sprintf(str,"(%s)", SDL_GetKeyName(pbutton->shortcut));
  74       text_draw(&white_small_text, str, pbutton->x - strlen(str) * white_small_text.w, pbutton->y + white_small_text.h+2, 1, NO_UPDATE);
  75     }
  76   if(pbutton->state == BN_PRESSED)
  77     fillrect(pbutton->x,pbutton->y,pbutton->w,pbutton->h,75,75,75,200);
  78 }
  79
  80 void button_free(button_type* pbutton)
  81 {
  82   free(pbutton->info);
  83   texture_free(&pbutton->icon);
  84 }
  85
  86 void button_event(button_type* pbutton, SDL_Event *event)
  87 {
  88   if(event->type == SDL_KEYDOWN)
  89     {
  90       SDLKey key = event->key.keysym.sym;
  91       if(key == pbutton->shortcut)
  92         pbutton->state = BN_CLICKED;
  93     }
  94   else if(event->type == SDL_MOUSEMOTION)
  95     {
  96
  97       if(pbutton->show_info)
  98         {
  99           pbutton->show_info = NO;
 100         }
 101     }
 102
 103   if(event->motion.x > pbutton->x && event->motion.x < pbutton->x + pbutton->w &&
 104       event->motion.y > pbutton->y && event->motion.y < pbutton->y + pbutton->h)
 105     {
 106       if(event->type == SDL_MOUSEBUTTONDOWN)
 107         {
 108           if(event->button.button == SDL_BUTTON_LEFT)
 109             {
 110               pbutton->state = BN_PRESSED;
 111             }
 112           else
 113             {
 114               pbutton->show_info = YES;
 115             }
 116         }
 117       if(event->type == SDL_MOUSEBUTTONUP)
 118         {
 119           if(event->button.button == SDL_BUTTON_LEFT && pbutton->state == BN_PRESSED)
 120             {
 121               pbutton->state = BN_CLICKED;
 122             }
 123           else if(event->button.button != SDL_BUTTON_LEFT && pbutton->state != BN_PRESSED)
 124             {
 125               pbutton->show_info = YES;
 126             }
 127         }
 128     }
 129   else
 130     {
 131       pbutton->state = -1;
 132       if(pbutton->show_info)
 133         {
 134           pbutton->show_info = NO;
 135         }
 136     }
 137 }
 138
 139 int button_get_state(button_type* pbutton)
 140 {
 141   int state;
 142   if(pbutton->state == BN_CLICKED)
 143     {
 144       state = pbutton->state;
 145       pbutton->state = -1;
 146       return state;
 147     }
 148   else
 149     return pbutton->state;
 150 }
 151
 152 void button_panel_init(button_panel_type* pbutton_panel, int x, int y, int w, int h)
 153 {
 154   pbutton_panel->num_items = 0;
 155   pbutton_panel->item = NULL;
 156   pbutton_panel->x = x;
 157   pbutton_panel->y = y;
 158   pbutton_panel->w = w;
 159   pbutton_panel->h = h;
 160 }
 161
 162 void button_panel_free(button_panel_type* pbutton_panel)
 163 {
 164   int i;
 165   for(i = 0; i < pbutton_panel->num_items; ++i)
 166     {
 167       button_free(&pbutton_panel->item[i]);
 168     }
 169   if(pbutton_panel->num_items)
 170     free(pbutton_panel->item);
 171 }
 172
 173 void button_panel_draw(button_panel_type* pbutton_panel)
 174 {
 175   int i;
 176   for(i = 0; i < pbutton_panel->num_items; ++i)
 177     {
 178       button_draw(&pbutton_panel->item[i]);
 179     }
 180 }
 181
 182 void button_panel_additem(button_panel_type* pbutton_panel, button_type* pbutton)
 183 {
 184   int max_cols, row, col;
 185
 186   ++pbutton_panel->num_items;
 187   pbutton_panel->item = (button_type*) realloc(pbutton_panel->item, sizeof(button_type) * pbutton_panel->num_items);
 188   memcpy(&pbutton_panel->item[pbutton_panel->num_items-1],pbutton,sizeof(button_type));
 189   free(pbutton);
 190
 191   /* A button_panel takes control of the buttons it contains and arranges them */
 192
 193   max_cols = pbutton_panel->w / 32;
 194
 195   row = pbutton_panel->num_items / max_cols;
 196   col = pbutton_panel->num_items % max_cols;
 197
 198   pbutton_panel->item[pbutton_panel->num_items-1].x = pbutton_panel->x + col * 32;
 199   pbutton_panel->item[pbutton_panel->num_items-1].y = pbutton_panel->y + row * 32;
 200
 201 }
 202