eleni.mutantstargoat.com Git - winnie/blob - libwinnie/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 bool client_open_mouse(void *smem_start, int offset)
  58 {
  59         mouse = (Mouse*)((unsigned char*)smem_start + offset);
  60         return true;
  61 }
  62
  63 void client_close_mouse()
  64 {
  65 }
  66
  67 void set_mouse_bounds(const Rect &rect)
  68 {
  69 }
  70
  71 int get_mouse_fd()
  72 {
  73         return -1;
  74 }
  75
  76 void process_mouse_event()
  77 {
  78         int bn;
  79         MouseMotionFuncType motion_callback = 0;
  80         MouseButtonFuncType button_callback = 0;
  81
  82         Window *win;
  83         if(!(win = wm->get_grab_window())) {
  84                 win = wm->get_window_at_pos(mouse->pointer_x, mouse->pointer_y);
  85                 if(win) {
  86                         wm->set_focused_window(win);
  87                 }
  88                 else {
  89                         wm->set_focused_window(0);
  90                 }
  91         }
  92
  93         switch(sdl_event.type) {
  94         case SDL_MOUSEMOTION:
  95                 mouse->pointer_x = sdl_event.motion.x;
  96                 mouse->pointer_y = sdl_event.motion.y;
  97                 if(win && (motion_callback = win->get_mouse_motion_callback())) {
  98                         Rect rect = win->get_absolute_rect();
  99                         motion_callback(win, mouse->pointer_x - rect.x, mouse->pointer_y - rect.y);
 100                 }
 101                 break;
 102
 103         case SDL_MOUSEBUTTONUP:
 104         case SDL_MOUSEBUTTONDOWN:
 105                 bn = sdl_event.button.button - SDL_BUTTON_LEFT;
 106                 if(sdl_event.button.state == SDL_PRESSED) {
 107                         mouse->bnstate |= 1 << bn;
 108                 }
 109                 else {
 110                         mouse->bnstate &= ~(1 << bn);
 111                 }
 112                 if(win && (button_callback = win->get_mouse_button_callback())) {
 113                         Rect rect = win->get_absolute_rect();
 114                         button_callback(win, bn, sdl_event.button.state, mouse->pointer_x - rect.x, mouse->pointer_y - rect.y);
 115                 }
 116         }
 117 }
 118
 119 void get_pointer_pos(int *x, int *y)
 120 {
 121         *x = mouse->pointer_x;
 122         *y = mouse->pointer_y;
 123 }
 124
 125 int get_button_state()
 126 {
 127         return mouse->bnstate;
 128 }
 129
 130 int get_button(int bn)
 131 {
 132         if(bn < 0 || bn >= 3) {
 133                 return 0;
 134         }
 135         return (mouse->bnstate & (1 << bn)) != 0;
 136 }
 137 #endif // WINNIE_SDL