Usermode/Applications/axwin3_src/WM/wm_input.c

   1 /*
   2  * Acess2 Window Manager v3
   3  * - By John Hodge (thePowersGang)
   4  *
   5  * wm.c
   6  * - Window manager core
   7  */
   8 #include <common.h>
   9 #include <wm_internals.h>
  10 #include <wm_messages.h>
  11
  12 #define MAX_BUTTONS     3
  13
  14 // === IMPORTS ===
  15 extern tWindow  *gpWM_RootWindow;
  16
  17 // === GLOBALS ===
  18 //! Window in which the mouse button was originally pressed
  19 tWindow *gpWM_DownStartWindow[MAX_BUTTONS];
  20
  21 // === CODE ===
  22 tWindow *WM_int_GetWindowAtPos(int X, int Y)
  23 {
  24         tWindow *win, *next_win, *ret;
  25
  26         next_win = gpWM_RootWindow;
  27
  28         while(next_win)
  29         {
  30                 ret = next_win;
  31                 next_win = NULL;
  32                 for(win = ret->FirstChild; win; win = win->NextSibling)
  33                 {
  34                         if( !(win->Flags & WINFLAG_SHOW) )      continue ;
  35                         if( X < win->X || X >= win->X + win->W )        continue;
  36                         if( Y < win->Y || Y >= win->Y + win->H )        continue;
  37                         next_win = win; // Overwrite as we want the final rendered window
  38                 }
  39         }
  40
  41         return ret;
  42 }
  43
  44 void WM_Input_MouseMoved(int OldX, int OldY, int NewX, int NewY)
  45 {
  46         tWindow *win, *newWin;
  47         struct sWndMsg_MouseMove        msg;
  48
  49         win = WM_int_GetWindowAtPos(OldX, OldY);
  50         msg.X = NewX - win->X;
  51         msg.Y = NewY - win->Y;
  52         msg.dX = NewX - OldX;
  53         msg.dY = NewY - OldY;
  54         WM_SendMessage(NULL, win, WNDMSG_MOUSEMOVE, sizeof(msg), &msg);
  55
  56         // If the new coordinates are not in a new window
  57         // NOTE: Should this handle crossing over a small window?
  58         // - Nah, no need
  59         newWin = WM_int_GetWindowAtPos(NewX, NewY);
  60         if(win == newWin)       return;
  61
  62         // TODO: Send mouseup to match mousedown if the cursor moves out of a window?
  63
  64         win = newWin;
  65         msg.X = NewX - win->X;
  66         msg.Y = NewY - win->Y;
  67         msg.dX = NewX - OldX;
  68         msg.dY = NewY - OldY;
  69         WM_SendMessage(NULL, win, WNDMSG_MOUSEMOVE, sizeof(msg), &msg);
  70 }
  71
  72 inline void WM_Input_int_SendBtnMsg(tWindow *Win, int X, int Y, int Index, int Pressed)
  73 {
  74         struct sWndMsg_MouseButton      msg;
  75
  76         msg.X = X - Win->X;
  77         msg.Y = Y - Win->Y;
  78         msg.Button = Index;
  79         msg.bPressed = !!Pressed;
  80
  81         WM_SendMessage(NULL, Win, WNDMSG_MOUSEBTN, sizeof(msg), &msg);
  82 }
  83
  84 void WM_Input_MouseButton(int X, int Y, int ButtonIndex, int Pressed)
  85 {
  86         tWindow *win;
  87
  88         win = WM_int_GetWindowAtPos(X, Y);
  89
  90         // Handle press of primary button to change focus
  91         if( ButtonIndex == 0 && Pressed == 1 )
  92         {
  93                 _SysDebug("Gave focus to %p", win);
  94                 WM_FocusWindow(win);
  95                 WM_RaiseWindow(win);
  96         }
  97
  98         // Make sure that even if the mouse has moved out of the original window,
  99         // mouse release messages reach the window.
 100         if( !Pressed && ButtonIndex < MAX_BUTTONS && gpWM_DownStartWindow[ButtonIndex] != win )
 101         {
 102                 WM_Input_int_SendBtnMsg(gpWM_DownStartWindow[ButtonIndex], X, Y, ButtonIndex, 0);
 103         }
 104         if( Pressed && ButtonIndex < MAX_BUTTONS )
 105         {
 106                 gpWM_DownStartWindow[ButtonIndex] = win;
 107         }
 108
 109         // Send Press/Release message
 110         WM_Input_int_SendBtnMsg(win, X, Y, ButtonIndex, Pressed);
 111 }
 112