Multitouch.h

   1 #include <SDL/SDL.h>
   2
   3 #define MT_MAX_CURSORS 10
   4
   5 /* we don't want to break any unrelated code */
   6 #define m_createStroke m_createStrokes[0]
   7 #define m_moveStroke   m_moveStrokes[0]
   8
   9 struct t_draw_event {
  10     int cursor_id;
  11     int x;
  12     int y;
  13 };
  14
  15 typedef struct t_draw_event DrawEvent;
  16
  17
  18 struct t_drag_event {
  19     int cursor_id;
  20     int x;
  21     int y;
  22 };
  23
  24 typedef struct t_drag_event DragEvent;
  25
  26
  27 struct t_pan_event {
  28     int xdiff;
  29     int ydiff;
  30 };
  31
  32 typedef struct t_pan_event PanEvent;
  33
  34
  35 struct t_zoom_event {
  36     int x;
  37     int y;
  38     float zoomfactor;
  39 };
  40
  41 typedef struct t_zoom_event ZoomEvent;
  42
  43
  44 struct t_delete_event {
  45     int x;
  46     int y;
  47 };
  48
  49 typedef struct t_delete_event DeleteEvent;
  50
  51
  52 struct t_cursor_event {
  53     int cursor_id;
  54 };
  55
  56 typedef struct t_cursor_event CursorEvent;
  57
  58
  59 enum
  60 {
  61     /* SDL_Events with one of the following have a DrawEvent as data1 */
  62     SDL_NP_START_STROKE = SDL_USEREVENT+1,
  63     SDL_NP_APPEND_STROKE,
  64     SDL_NP_FINISH_STROKE,
  65
  66     SDL_NP_START_ROPE,
  67     SDL_NP_APPEND_ROPE,
  68     SDL_NP_FINISH_ROPE,
  69
  70     SDL_NP_PREVIEW_CURSOR,
  71
  72     /* SDL_Event with one of the following types have a CursorEvent as data1 */
  73     SDL_NP_CANCEL_DRAW,
  74
  75     /* SDL_Events with one of the following types have a DragEvent as data1 */
  76     SDL_NP_START_DRAG,
  77     SDL_NP_DRAG,
  78     SDL_NP_END_DRAG,
  79
  80     /* SDL_Events with one of the following types have a PanEvent as data1 */
  81     SDL_NP_PAN,
  82
  83     /* SDL_Events with one of the following types have a ZoomEvent as data1 */
  84     SDL_NP_ZOOM,
  85
  86     /* SDL_Events with one of the following types have a DeletEvent as data1 */
  87     SDL_NP_DELETE
  88
  89 };
  90
  91 void queueStartStrokeEvent(int cursor_id, int x, int y);
  92 void queueAppendStrokeEvent(int cursor_id, int x, int y);
  93 void queueFinishStrokeEvent(int cursor_id, int x, int y);
  94 void queueCancelDrawEvent(int cursor_id);
  95 void queuePreviewCursorEvent(int cursor_id, int x, int y);
  96 void queueCursorEvent(int type, int cursor_id);
  97 void queueStartRopeEvent(int cursor_id, int x, int y);
  98 void queueAppendRopeEvent(int cursor_id, int x, int y);
  99 void queueFinishRopeEvent(int cursor_id, int x, int y);
 100 void queueStartDragEvent(int cursor_id, int x, int y);
 101 void queueDragEvent(int cursor_id, int x, int y);
 102 void queueEndDragEvent(int cursor_id, int x, int y);
 103 void queuePanEvent(int xdiff, int ydiff);
 104 void queueZoomEvent(int x, int y, float zoomfactor);
 105 void queueDeleteEvent(int x, int y);
 106 void queueUserEvent(int type, void *data1, void *data2);