git.mutantstargoat.com Git - winnie/blob - src/sdl/mouse.cc

   1 /*
   2 winnie - an experimental window system
   3
   4 Copyright (C) 2013 Eleni Maria Stea
   5
   6 This program is free software: you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation, either version 3 of the License, or
   9 (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, see <http://www.gnu.org/licenses/>.
  18
  19 Author: Eleni Maria Stea <elene.mst@gmail.com>
  20 */
  21
  22 #ifdef WINNIE_SDL
  23 #include <SDL/SDL.h>
  24
  25 #include "mouse.h"
  26 #include "shalloc.h"
  27 #include "wm.h"
  28 #include "window.h"
  29 #include "winnie.h"
  30
  31 extern SDL_Event sdl_event;
  32
  33 struct Mouse {
  34         int pointer_x;
  35         int pointer_y;
  36         int bnstate;
  37 };
  38
  39 static Mouse *mouse;
  40
  41 bool init_mouse()
  42 {
  43         if(!(mouse = (Mouse*)sh_malloc(sizeof *mouse))) {
  44                 return false;
  45         }
  46         get_subsys()->mouse_offset = (int)((char*)mouse - (char*)get_pool());
  47
  48         memset(mouse, 0, sizeof *mouse);
  49         return true;
  50 }
  51
  52 void destroy_mouse()
  53 {
  54         sh_free(mouse);
  55 }
  56
  57 void set_mouse_bounds(const Rect &rect)
  58 {
  59 }
  60
  61 int get_mouse_fd()
  62 {
  63         return -1;
  64 }
  65
  66 void process_mouse_event()
  67 {
  68         int bn;
  69         MouseMotionFuncType motion_callback = 0;
  70         MouseButtonFuncType button_callback = 0;
  71
  72         Window *win;
  73         if(!(win = wm->get_grab_window())) {
  74                 win = wm->get_window_at_pos(mouse->pointer_x, mouse->pointer_y);
  75                 if(win) {
  76                         wm->set_focused_window(win);
  77                 }
  78                 else {
  79                         wm->set_focused_window(0);
  80                 }
  81         }
  82
  83         switch(sdl_event.type) {
  84         case SDL_MOUSEMOTION:
  85                 mouse->pointer_x = sdl_event.motion.x;
  86                 mouse->pointer_y = sdl_event.motion.y;
  87                 if(win && (motion_callback = win->get_mouse_motion_callback())) {
  88                         Rect rect = win->get_absolute_rect();
  89                         motion_callback(win, mouse->pointer_x - rect.x, mouse->pointer_y - rect.y);
  90                 }
  91                 break;
  92
  93         case SDL_MOUSEBUTTONUP:
  94         case SDL_MOUSEBUTTONDOWN:
  95                 bn = sdl_event.button.button - SDL_BUTTON_LEFT;
  96                 if(sdl_event.button.state == SDL_PRESSED) {
  97                         mouse->bnstate |= 1 << bn;
  98                 }
  99                 else {
 100                         mouse->bnstate &= ~(1 << bn);
 101                 }
 102                 if(win && (button_callback = win->get_mouse_button_callback())) {
 103                         Rect rect = win->get_absolute_rect();
 104                         button_callback(win, bn, sdl_event.button.state, mouse->pointer_x - rect.x, mouse->pointer_y - rect.y);
 105                 }
 106         }
 107 }
 108
 109 void get_pointer_pos(int *x, int *y)
 110 {
 111         *x = mouse->pointer_x;
 112         *y = mouse->pointer_y;
 113 }
 114
 115 int get_button_state()
 116 {
 117         return mouse->bnstate;
 118 }
 119
 120 int get_button(int bn)
 121 {
 122         if(bn < 0 || bn >= 3) {
 123                 return 0;
 124         }
 125         return (mouse->bnstate & (1 << bn)) != 0;
 126 }
 127 #endif // WINNIE_SDL