wmget/dockapp/da_mouse.c

   1 /*
   2     wmget - A background download manager as a Window Maker dock app
   3     Copyright (c) 2001-2003 Aaron Trickey <aaron@amtrickey.net>
   4
   5     Permission is hereby granted, free of charge, to any person
   6     obtaining a copy of this software and associated documentation files
   7     (the "Software"), to deal in the Software without restriction,
   8     including without limitation the rights to use, copy, modify, merge,
   9     publish, distribute, sublicense, and/or sell copies of the Software,
  10     and to permit persons to whom the Software is furnished to do so,
  11     subject to the following conditions:
  12
  13     The above copyright notice and this permission notice shall be
  14     included in all copies or substantial portions of the Software.
  15
  16     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  17     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  18     MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  19     NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  20     CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  21     TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  22     SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23
  24     ********************************************************************
  25     dockapp/da_mouse.c - Mouse/clickregion handling
  26
  27     This code keeps track of app-registered ``clickregions'', which
  28     represent clickable rectangles and button/modifier masks associated
  29     with app callbacks.
  30 */
  31
  32 #include <stdio.h>
  33 #include <sys/types.h>
  34 #include "dockapp.h"
  35
  36 #define DOCKAPP_EXPOSE_INTERNALS
  37 #include "da_mouse.h"
  38
  39
  40
  41 typedef struct {
  42     int x, y, w, h;
  43     int buttonmask;
  44
  45     dockapp_rv_t (*cb) (void *, int x, int y);
  46     void *cbdata;
  47 } da_clickregion;
  48
  49
  50 /* for now we use a simple array of clickregions
  51  */
  52 #define DA_MAX_CLICKREGIONS 50
  53 static da_clickregion da_clickregions[DA_MAX_CLICKREGIONS];
  54 static size_t da_num_clickregions = 0;
  55
  56
  57 /* a mouse-down simply stores the mouse state here for later processing
  58  * by a mouse-up
  59  */
  60 static int da_mouse_down_x;
  61 static int da_mouse_down_y;
  62 static int da_mouse_down_buttons;
  63
  64
  65 void da_mouse_button_down (int x, int y, int buttons)
  66 {
  67     /* fprintf (stderr, "hello from da_mouse_button_down\n"); */
  68     da_mouse_down_x = x;
  69     da_mouse_down_y = y;
  70     da_mouse_down_buttons = buttons;
  71 }
  72
  73
  74 dockapp_rv_t da_mouse_button_up (int x, int y, int buttons)
  75 {
  76     da_clickregion *c, *end;
  77
  78     /*
  79     fprintf (stderr, "hello from da_mouse_button_up, btns=0x%02x\n",
  80             buttons);
  81      */
  82
  83     end = da_clickregions + da_num_clickregions;
  84
  85     for (c = da_clickregions; c < end; ++c) {
  86         if (((buttons & c->buttonmask) == c->buttonmask)
  87                 && x >= c->x && x < c->x + c->w
  88                 && y >= c->y && y < c->y + c->h
  89                 && da_mouse_down_x >= c->x && da_mouse_down_x < c->x + c->w
  90                 && da_mouse_down_y >= c->y && da_mouse_down_y < c->y + c->h) {
  91             if (c->cb (c->cbdata, x, y) == dockapp_exit)
  92                 return dockapp_exit;
  93         }
  94     }
  95
  96     return dockapp_ok;
  97 }
  98
  99
 100 dockapp_rv_t dockapp_add_clickregion (
 101         int x, int y, int w, int h,
 102         int buttonmask,
 103         dockapp_rv_t (*cb) (void *, int x, int y),
 104         void *cbdata)
 105 {
 106     da_clickregion *c;
 107
 108     if (da_num_clickregions >= DA_MAX_CLICKREGIONS)
 109         return dockapp_rv_too_many_clickregions;
 110
 111     c = da_clickregions + da_num_clickregions++;
 112
 113     c->x = x;
 114     c->y = y;
 115     c->w = w;
 116     c->h = h;
 117     c->buttonmask = buttonmask;
 118     c->cb = cb;
 119     c->cbdata = cbdata;
 120
 121     return dockapp_ok;
 122 }
 123
 124
 125