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       int i = -32;
  72
  73       if(0 > pbutton->x - (int)strlen(pbutton->info) * white_small_text.w)
  74           i = pbutton->w + strlen(pbutton->info) * white_small_text.w;
  75
  76       if(pbutton->info)
  77         text_draw(&white_small_text, pbutton->info, i + pbutton->x - strlen(pbutton->info) * white_small_text.w, pbutton->y, 1, NO_UPDATE);
  78       sprintf(str,"(%s)", SDL_GetKeyName(pbutton->shortcut));
  79       text_draw(&white_small_text, str, i + pbutton->x - strlen(str) * white_small_text.w, pbutton->y + white_small_text.h+2, 1, NO_UPDATE);
  80     }
  81   if(pbutton->state == BN_PRESSED)
  82     fillrect(pbutton->x,pbutton->y,pbutton->w,pbutton->h,75,75,75,200);
  83   else if(pbutton->state == BN_HOVER)
  84     fillrect(pbutton->x,pbutton->y,pbutton->w,pbutton->h,150,150,150,128);
  85 }
  86
  87 void button_free(button_type* pbutton)
  88 {
  89   free(pbutton->info);
  90   texture_free(&pbutton->icon);
  91 }
  92
  93 void button_event(button_type* pbutton, SDL_Event *event)
  94 {
  95   SDLKey key = event->key.keysym.sym;
  96
  97   if(event->motion.x > pbutton->x && event->motion.x < pbutton->x + pbutton->w &&
  98       event->motion.y > pbutton->y && event->motion.y < pbutton->y + pbutton->h)
  99     {
 100       if(event->type == SDL_MOUSEBUTTONDOWN)
 101         {
 102           if(event->button.button == SDL_BUTTON_LEFT)
 103             {
 104               pbutton->state = BN_PRESSED;
 105             }
 106           else
 107             {
 108               pbutton->show_info = YES;
 109             }
 110         }
 111       else if(event->type == SDL_MOUSEBUTTONUP)
 112         {
 113           if(event->button.button == SDL_BUTTON_LEFT && pbutton->state == BN_PRESSED)
 114             {
 115               pbutton->state = BN_CLICKED;
 116             }
 117           else if(event->button.button != SDL_BUTTON_LEFT && pbutton->state != BN_PRESSED)
 118             {
 119               pbutton->show_info = YES;
 120             }
 121         }
 122
 123       if(pbutton->state != BN_PRESSED && pbutton->state != BN_CLICKED)
 124         {
 125           pbutton->state = BN_HOVER;
 126         }
 127     }
 128   else if(event->type != SDL_KEYDOWN && event->type != SDL_KEYUP)
 129     {
 130       pbutton->state = -1;
 131       if(pbutton->show_info)
 132         {
 133           pbutton->show_info = NO;
 134         }
 135     }
 136
 137   if(event->type == SDL_KEYDOWN)
 138     {
 139       if(key == pbutton->shortcut)
 140         pbutton->state = BN_PRESSED;
 141     }
 142   else if(event->type == SDL_KEYUP)
 143     {
 144       if(pbutton->state == BN_PRESSED && key == pbutton->shortcut)
 145         pbutton->state = BN_CLICKED;
 146     }
 147   else if(event->type == SDL_MOUSEMOTION)
 148     {
 149
 150       if(pbutton->show_info)
 151         {
 152           pbutton->show_info = NO;
 153         }
 154     }
 155 }
 156
 157 int button_get_state(button_type* pbutton)
 158 {
 159   int state;
 160   if(pbutton->state == BN_CLICKED)
 161     {
 162       state = pbutton->state;
 163       pbutton->state = -1;
 164       return state;
 165     }
 166   else
 167     return pbutton->state;
 168 }
 169
 170 void button_panel_init(button_panel_type* pbutton_panel, int x, int y, int w, int h)
 171 {
 172   pbutton_panel->num_items = 0;
 173   pbutton_panel->item = NULL;
 174   pbutton_panel->x = x;
 175   pbutton_panel->y = y;
 176   pbutton_panel->w = w;
 177   pbutton_panel->h = h;
 178 }
 179
 180 void button_panel_free(button_panel_type* pbutton_panel)
 181 {
 182   int i;
 183   for(i = 0; i < pbutton_panel->num_items; ++i)
 184     {
 185       button_free(&pbutton_panel->item[i]);
 186     }
 187   if(pbutton_panel->num_items)
 188     free(pbutton_panel->item);
 189 }
 190
 191 void button_panel_draw(button_panel_type* pbutton_panel)
 192 {
 193   int i;
 194   fillrect(pbutton_panel->x,pbutton_panel->y,pbutton_panel->w,pbutton_panel->h,100,100,100,200);
 195   for(i = 0; i < pbutton_panel->num_items; ++i)
 196     {
 197       button_draw(&pbutton_panel->item[i]);
 198     }
 199 }
 200
 201 void button_panel_additem(button_panel_type* pbutton_panel, button_type* pbutton)
 202 {
 203   int max_cols, row, col;
 204
 205   ++pbutton_panel->num_items;
 206   pbutton_panel->item = (button_type*) realloc(pbutton_panel->item, sizeof(button_type) * pbutton_panel->num_items);
 207   memcpy(&pbutton_panel->item[pbutton_panel->num_items-1],pbutton,sizeof(button_type));
 208   free(pbutton);
 209
 210   /* A button_panel takes control of the buttons it contains and arranges them */
 211
 212   max_cols = pbutton_panel->w / 32;
 213
 214   row = pbutton_panel->num_items / max_cols;
 215   col = pbutton_panel->num_items % max_cols;
 216
 217   pbutton_panel->item[pbutton_panel->num_items-1].x = pbutton_panel->x + col * 32;
 218   pbutton_panel->item[pbutton_panel->num_items-1].y = pbutton_panel->y + row * 32;
 219
 220 }
 221