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dashley |
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/* $Header$ */
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dashley |
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/*
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* tkWinPointer.c --
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*
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* Windows specific mouse tracking code.
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*
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* Copyright (c) 1995-1997 Sun Microsystems, Inc.
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* Copyright (c) 1998-1999 by Scriptics Corporation.
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*
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* See the file "license.terms" for information on usage and redistribution
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* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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*
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* RCS: @(#) $Id: tkwinpointer.c,v 1.1.1.1 2001/06/13 05:14:12 dtashley Exp $
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*/
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#include "tkWinInt.h"
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/*
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* Check for enter/leave events every MOUSE_TIMER_INTERVAL milliseconds.
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*/
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#define MOUSE_TIMER_INTERVAL 250
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/*
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* Declarations of static variables used in this file.
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*/
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static int captured = 0; /* 1 if mouse is currently captured. */
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static TkWindow *keyboardWinPtr = NULL; /* Current keyboard grab window. */
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static Tcl_TimerToken mouseTimer; /* Handle to the latest mouse timer. */
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static int mouseTimerSet = 0; /* 1 if the mouse timer is active. */
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/*
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* Forward declarations of procedures used in this file.
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*/
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static void MouseTimerProc _ANSI_ARGS_((ClientData clientData));
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/*
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*----------------------------------------------------------------------
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*
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* TkWinGetModifierState --
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*
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* Return the modifier state as of the last message.
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*
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* Results:
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* Returns the X modifier mask.
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*
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* Side effects:
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* None.
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*
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*----------------------------------------------------------------------
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*/
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int
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TkWinGetModifierState()
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{
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int state = 0;
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if (GetKeyState(VK_SHIFT) & 0x8000) {
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state |= ShiftMask;
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}
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if (GetKeyState(VK_CONTROL) & 0x8000) {
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state |= ControlMask;
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}
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if (GetKeyState(VK_MENU) & 0x8000) {
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state |= ALT_MASK;
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}
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if (GetKeyState(VK_CAPITAL) & 0x0001) {
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state |= LockMask;
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}
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if (GetKeyState(VK_NUMLOCK) & 0x0001) {
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state |= Mod1Mask;
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}
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if (GetKeyState(VK_SCROLL) & 0x0001) {
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state |= Mod3Mask;
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}
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if (GetKeyState(VK_LBUTTON) & 0x8000) {
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state |= Button1Mask;
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}
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if (GetKeyState(VK_MBUTTON) & 0x8000) {
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state |= Button2Mask;
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}
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if (GetKeyState(VK_RBUTTON) & 0x8000) {
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state |= Button3Mask;
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}
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return state;
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}
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/*
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*----------------------------------------------------------------------
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*
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* Tk_PointerEvent --
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*
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* This procedure is called for each pointer-related event.
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* It converts the position to root coords and updates the
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* global pointer state machine. It also ensures that the
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* mouse timer is scheduled.
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*
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* Results:
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* None.
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*
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* Side effects:
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* May queue events and change the grab state.
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*
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*----------------------------------------------------------------------
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*/
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void
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Tk_PointerEvent(hwnd, x, y)
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HWND hwnd; /* Window for coords, or NULL for
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* the root window. */
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int x, y; /* Coords relative to hwnd, or screen
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* if hwnd is NULL. */
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{
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POINT pos;
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int state;
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Tk_Window tkwin;
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pos.x = x;
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pos.y = y;
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/*
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* Convert client coords to root coords if we were given a window.
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*/
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if (hwnd) {
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ClientToScreen(hwnd, &pos);
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}
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/*
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* If the mouse is captured, Windows will report all pointer
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* events to the capture window. So, we need to determine which
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* window the mouse is really over and change the event. Note
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* that the computed hwnd may point to a window not owned by Tk,
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* or a toplevel decorative frame, so tkwin can be NULL.
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*/
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if (captured || hwnd == NULL) {
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hwnd = WindowFromPoint(pos);
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}
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tkwin = Tk_HWNDToWindow(hwnd);
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state = TkWinGetModifierState();
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Tk_UpdatePointer(tkwin, pos.x, pos.y, state);
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if ((captured || tkwin) && !mouseTimerSet) {
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mouseTimerSet = 1;
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mouseTimer = Tcl_CreateTimerHandler(MOUSE_TIMER_INTERVAL,
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MouseTimerProc, NULL);
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}
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}
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/*
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*----------------------------------------------------------------------
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*
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* XGrabKeyboard --
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*
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* Simulates a keyboard grab by setting the focus.
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*
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* Results:
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* Always returns GrabSuccess.
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*
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* Side effects:
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* Sets the keyboard focus to the specified window.
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*
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*----------------------------------------------------------------------
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*/
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int
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XGrabKeyboard(display, grab_window, owner_events, pointer_mode,
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keyboard_mode, time)
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Display* display;
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Window grab_window;
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Bool owner_events;
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int pointer_mode;
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int keyboard_mode;
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Time time;
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{
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keyboardWinPtr = TkWinGetWinPtr(grab_window);
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return GrabSuccess;
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}
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/*
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*----------------------------------------------------------------------
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*
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* XUngrabKeyboard --
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*
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* Releases the simulated keyboard grab.
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*
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* Results:
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* None.
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*
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* Side effects:
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* Sets the keyboard focus back to the value before the grab.
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*
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*----------------------------------------------------------------------
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*/
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void
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XUngrabKeyboard(display, time)
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Display* display;
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Time time;
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{
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keyboardWinPtr = NULL;
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}
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/*
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*----------------------------------------------------------------------
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*
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* MouseTimerProc --
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*
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* Check the current mouse position and look for enter/leave
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* events.
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*
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* Results:
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* None.
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*
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* Side effects:
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* May schedule a new timer and/or generate enter/leave events.
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*
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*----------------------------------------------------------------------
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*/
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void
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MouseTimerProc(clientData)
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ClientData clientData;
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{
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POINT pos;
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mouseTimerSet = 0;
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/*
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* Get the current mouse position and window. Don't do anything
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* if the mouse hasn't moved since the last time we looked.
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*/
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GetCursorPos(&pos);
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Tk_PointerEvent(NULL, pos.x, pos.y);
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}
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/*
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*----------------------------------------------------------------------
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*
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* TkWinCancelMouseTimer --
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*
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* If the mouse timer is set, cancel it.
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*
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* Results:
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* None.
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*
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* Side effects:
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* May cancel the mouse timer.
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*
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*----------------------------------------------------------------------
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*/
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void
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TkWinCancelMouseTimer()
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{
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if (mouseTimerSet) {
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Tcl_DeleteTimerHandler(mouseTimer);
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mouseTimerSet = 0;
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}
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}
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/*
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*----------------------------------------------------------------------
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*
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* TkGetPointerCoords --
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*
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* Fetch the position of the mouse pointer.
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*
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* Results:
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* *xPtr and *yPtr are filled in with the root coordinates
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* of the mouse pointer for the display.
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*
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* Side effects:
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* None.
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*
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*----------------------------------------------------------------------
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*/
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void
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TkGetPointerCoords(tkwin, xPtr, yPtr)
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Tk_Window tkwin; /* Window that identifies screen on which
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* lookup is to be done. */
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int *xPtr, *yPtr; /* Store pointer coordinates here. */
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{
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POINT point;
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GetCursorPos(&point);
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*xPtr = point.x;
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*yPtr = point.y;
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}
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298 |
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/*
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300 |
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*----------------------------------------------------------------------
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301 |
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*
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302 |
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* XQueryPointer --
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*
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304 |
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* Check the current state of the mouse. This is not a complete
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305 |
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* implementation of this function. It only computes the root
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* coordinates and the current mask.
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*
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308 |
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* Results:
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309 |
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* Sets root_x_return, root_y_return, and mask_return. Returns
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310 |
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* true on success.
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*
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312 |
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* Side effects:
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* None.
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*
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315 |
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*----------------------------------------------------------------------
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316 |
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*/
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317 |
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Bool
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XQueryPointer(display, w, root_return, child_return, root_x_return,
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root_y_return, win_x_return, win_y_return, mask_return)
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Display* display;
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Window w;
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323 |
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Window* root_return;
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324 |
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Window* child_return;
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325 |
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int* root_x_return;
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326 |
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int* root_y_return;
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327 |
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int* win_x_return;
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328 |
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int* win_y_return;
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329 |
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unsigned int* mask_return;
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330 |
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{
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331 |
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display->request++;
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332 |
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TkGetPointerCoords(NULL, root_x_return, root_y_return);
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333 |
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*mask_return = TkWinGetModifierState();
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334 |
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return True;
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}
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336 |
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337 |
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/*
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338 |
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*----------------------------------------------------------------------
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339 |
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*
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340 |
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* XWarpPointer --
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341 |
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*
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342 |
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* Move pointer to new location. This is not a complete
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343 |
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* implementation of this function.
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344 |
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*
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345 |
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* Results:
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346 |
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* None.
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347 |
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*
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348 |
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* Side effects:
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349 |
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* Mouse pointer changes position on screen.
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350 |
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*
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351 |
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*----------------------------------------------------------------------
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352 |
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*/
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353 |
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354 |
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void
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355 |
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XWarpPointer(display, src_w, dest_w, src_x, src_y, src_width,
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356 |
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src_height, dest_x, dest_y)
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357 |
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Display* display;
|
358 |
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Window src_w;
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359 |
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Window dest_w;
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360 |
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int src_x;
|
361 |
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int src_y;
|
362 |
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unsigned int src_width;
|
363 |
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unsigned int src_height;
|
364 |
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int dest_x;
|
365 |
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int dest_y;
|
366 |
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{
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367 |
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RECT r;
|
368 |
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369 |
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GetWindowRect(Tk_GetHWND(dest_w), &r);
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370 |
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SetCursorPos(r.left+dest_x, r.top+dest_y);
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371 |
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}
|
372 |
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|
|
373 |
|
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/*
|
374 |
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*----------------------------------------------------------------------
|
375 |
|
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*
|
376 |
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* XGetInputFocus --
|
377 |
|
|
*
|
378 |
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* Retrieves the current keyboard focus window.
|
379 |
|
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*
|
380 |
|
|
* Results:
|
381 |
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|
* Returns the current focus window.
|
382 |
|
|
*
|
383 |
|
|
* Side effects:
|
384 |
|
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* None.
|
385 |
|
|
*
|
386 |
|
|
*----------------------------------------------------------------------
|
387 |
|
|
*/
|
388 |
|
|
|
389 |
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void
|
390 |
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XGetInputFocus(display, focus_return, revert_to_return)
|
391 |
|
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Display *display;
|
392 |
|
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Window *focus_return;
|
393 |
|
|
int *revert_to_return;
|
394 |
|
|
{
|
395 |
|
|
Tk_Window tkwin = Tk_HWNDToWindow(GetFocus());
|
396 |
|
|
*focus_return = tkwin ? Tk_WindowId(tkwin) : None;
|
397 |
|
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*revert_to_return = RevertToParent;
|
398 |
|
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display->request++;
|
399 |
|
|
}
|
400 |
|
|
|
401 |
|
|
/*
|
402 |
|
|
*----------------------------------------------------------------------
|
403 |
|
|
*
|
404 |
|
|
* XSetInputFocus --
|
405 |
|
|
*
|
406 |
|
|
* Set the current focus window.
|
407 |
|
|
*
|
408 |
|
|
* Results:
|
409 |
|
|
* None.
|
410 |
|
|
*
|
411 |
|
|
* Side effects:
|
412 |
|
|
* Changes the keyboard focus and causes the selected window to
|
413 |
|
|
* be activated.
|
414 |
|
|
*
|
415 |
|
|
*----------------------------------------------------------------------
|
416 |
|
|
*/
|
417 |
|
|
|
418 |
|
|
void
|
419 |
|
|
XSetInputFocus(display, focus, revert_to, time)
|
420 |
|
|
Display* display;
|
421 |
|
|
Window focus;
|
422 |
|
|
int revert_to;
|
423 |
|
|
Time time;
|
424 |
|
|
{
|
425 |
|
|
display->request++;
|
426 |
|
|
if (focus != None) {
|
427 |
|
|
SetFocus(Tk_GetHWND(focus));
|
428 |
|
|
}
|
429 |
|
|
}
|
430 |
|
|
|
431 |
|
|
/*
|
432 |
|
|
*----------------------------------------------------------------------
|
433 |
|
|
*
|
434 |
|
|
* TkpChangeFocus --
|
435 |
|
|
*
|
436 |
|
|
* This procedure is invoked to move the system focus from
|
437 |
|
|
* one window to another.
|
438 |
|
|
*
|
439 |
|
|
* Results:
|
440 |
|
|
* The return value is the serial number of the command that
|
441 |
|
|
* changed the focus. It may be needed by the caller to filter
|
442 |
|
|
* out focus change events that were queued before the command.
|
443 |
|
|
* If the procedure doesn't actually change the focus then
|
444 |
|
|
* it returns 0.
|
445 |
|
|
*
|
446 |
|
|
* Side effects:
|
447 |
|
|
* The official Windows focus window changes; the application's focus
|
448 |
|
|
* window isn't changed by this procedure.
|
449 |
|
|
*
|
450 |
|
|
*----------------------------------------------------------------------
|
451 |
|
|
*/
|
452 |
|
|
|
453 |
|
|
int
|
454 |
|
|
TkpChangeFocus(winPtr, force)
|
455 |
|
|
TkWindow *winPtr; /* Window that is to receive the X focus. */
|
456 |
|
|
int force; /* Non-zero means claim the focus even
|
457 |
|
|
* if it didn't originally belong to
|
458 |
|
|
* topLevelPtr's application. */
|
459 |
|
|
{
|
460 |
|
|
TkDisplay *dispPtr = winPtr->dispPtr;
|
461 |
|
|
Window focusWindow;
|
462 |
|
|
int dummy, serial;
|
463 |
|
|
TkWindow *winPtr2;
|
464 |
|
|
|
465 |
|
|
if (!force) {
|
466 |
|
|
XGetInputFocus(dispPtr->display, &focusWindow, &dummy);
|
467 |
|
|
winPtr2 = (TkWindow *) Tk_IdToWindow(dispPtr->display, focusWindow);
|
468 |
|
|
if ((winPtr2 == NULL) || (winPtr2->mainPtr != winPtr->mainPtr)) {
|
469 |
|
|
return 0;
|
470 |
|
|
}
|
471 |
|
|
}
|
472 |
|
|
|
473 |
|
|
if (winPtr->window == None) {
|
474 |
|
|
panic("ChangeXFocus got null X window");
|
475 |
|
|
}
|
476 |
|
|
|
477 |
|
|
/*
|
478 |
|
|
* Change the foreground window so the focus window is raised to the top of
|
479 |
|
|
* the system stacking order and gets the keyboard focus.
|
480 |
|
|
*/
|
481 |
|
|
|
482 |
|
|
if (force) {
|
483 |
|
|
TkWinSetForegroundWindow(winPtr);
|
484 |
|
|
}
|
485 |
|
|
XSetInputFocus(dispPtr->display, winPtr->window, RevertToParent,
|
486 |
|
|
CurrentTime);
|
487 |
|
|
|
488 |
|
|
/*
|
489 |
|
|
* Remember the current serial number for the X server and issue
|
490 |
|
|
* a dummy server request. This marks the position at which we
|
491 |
|
|
* changed the focus, so we can distinguish FocusIn and FocusOut
|
492 |
|
|
* events on either side of the mark.
|
493 |
|
|
*/
|
494 |
|
|
|
495 |
|
|
serial = NextRequest(winPtr->display);
|
496 |
|
|
XNoOp(winPtr->display);
|
497 |
|
|
return serial;
|
498 |
|
|
}
|
499 |
|
|
|
500 |
|
|
/*
|
501 |
|
|
*----------------------------------------------------------------------
|
502 |
|
|
*
|
503 |
|
|
* TkpSetCapture --
|
504 |
|
|
*
|
505 |
|
|
* This function captures the mouse so that all future events
|
506 |
|
|
* will be reported to this window, even if the mouse is outside
|
507 |
|
|
* the window. If the specified window is NULL, then the mouse
|
508 |
|
|
* is released.
|
509 |
|
|
*
|
510 |
|
|
* Results:
|
511 |
|
|
* None.
|
512 |
|
|
*
|
513 |
|
|
* Side effects:
|
514 |
|
|
* Sets the capture flag and captures the mouse.
|
515 |
|
|
*
|
516 |
|
|
*----------------------------------------------------------------------
|
517 |
|
|
*/
|
518 |
|
|
|
519 |
|
|
void
|
520 |
|
|
TkpSetCapture(winPtr)
|
521 |
|
|
TkWindow *winPtr; /* Capture window, or NULL. */
|
522 |
|
|
{
|
523 |
|
|
if (winPtr) {
|
524 |
|
|
SetCapture(Tk_GetHWND(Tk_WindowId(winPtr)));
|
525 |
|
|
captured = 1;
|
526 |
|
|
} else {
|
527 |
|
|
captured = 0;
|
528 |
|
|
ReleaseCapture();
|
529 |
|
|
}
|
530 |
|
|
}
|
531 |
|
|
|
532 |
dashley |
69 |
/* End of tkwinpointer.c */
|