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-rw-r--r--generic/tkPointer.c299
1 files changed, 150 insertions, 149 deletions
diff --git a/generic/tkPointer.c b/generic/tkPointer.c
index 917020f..3b38cbe 100644
--- a/generic/tkPointer.c
+++ b/generic/tkPointer.c
@@ -1,17 +1,17 @@
-/*
+/*
* tkPointer.c --
*
- * This file contains functions for emulating the X server
- * pointer and grab state machine. This file is used by the
- * Mac and Windows platforms to generate appropriate enter/leave
- * events, and to update the global grab window information.
+ * This file contains functions for emulating the X server pointer and
+ * grab state machine. This file is used by the Mac and Windows platforms
+ * to generate appropriate enter/leave events, and to update the global
+ * grab window information.
*
* Copyright (c) 1996 by Sun Microsystems, Inc.
*
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
- * RCS: @(#) $Id: tkPointer.c,v 1.9 2004/03/17 18:15:43 das Exp $
+ * RCS: @(#) $Id: tkPointer.c,v 1.10 2005/11/15 15:18:22 dkf Exp $
*/
#include "tkInt.h"
@@ -26,8 +26,8 @@
#endif
/*
- * Mask that selects any of the state bits corresponding to buttons,
- * plus masks that select individual buttons' bits:
+ * Mask that selects any of the state bits corresponding to buttons, plus
+ * masks that select individual buttons' bits:
*/
#define ALL_BUTTONS \
@@ -38,15 +38,15 @@ static unsigned int buttonMasks[] = {
#define ButtonMask(b) (buttonMasks[(b)-Button1])
typedef struct ThreadSpecificData {
- TkWindow *grabWinPtr; /* Window that defines the top of the
- * grab tree in a global grab. */
- int lastState; /* Last known state flags. */
- XPoint lastPos; /* Last reported mouse position. */
- TkWindow *lastWinPtr; /* Last reported mouse window. */
- TkWindow *restrictWinPtr; /* Window to which all mouse events
- * will be reported. */
- TkWindow *cursorWinPtr; /* Window that is currently
- * controlling the global cursor. */
+ TkWindow *grabWinPtr; /* Window that defines the top of the grab
+ * tree in a global grab. */
+ int lastState; /* Last known state flags. */
+ XPoint lastPos; /* Last reported mouse position. */
+ TkWindow *lastWinPtr; /* Last reported mouse window. */
+ TkWindow *restrictWinPtr; /* Window to which all mouse events will be
+ * reported. */
+ TkWindow *cursorWinPtr; /* Window that is currently controlling the
+ * global cursor. */
} ThreadSpecificData;
static Tcl_ThreadDataKey dataKey;
@@ -54,12 +54,11 @@ static Tcl_ThreadDataKey dataKey;
* Forward declarations of procedures used in this file.
*/
-static int GenerateEnterLeave _ANSI_ARGS_((TkWindow *winPtr,
- int x, int y, int state));
-static void InitializeEvent _ANSI_ARGS_((XEvent* eventPtr,
- TkWindow *winPtr, int type, int x, int y,
- int state, int detail));
-static void UpdateCursor _ANSI_ARGS_((TkWindow *winPtr));
+static int GenerateEnterLeave(TkWindow *winPtr, int x, int y,
+ int state);
+static void InitializeEvent(XEvent* eventPtr, TkWindow *winPtr,
+ int type, int x, int y, int state, int detail);
+static void UpdateCursor(TkWindow *winPtr);
/*
*----------------------------------------------------------------------
@@ -78,13 +77,13 @@ static void UpdateCursor _ANSI_ARGS_((TkWindow *winPtr));
*/
static void
-InitializeEvent(eventPtr, winPtr, type, x, y, state, detail)
- XEvent* eventPtr; /* Event structure to initialize. */
- TkWindow *winPtr; /* Window to make event relative to. */
- int type; /* Message type. */
- int x, y; /* Root coords of event. */
- int state; /* State flags. */
- int detail; /* Detail value. */
+InitializeEvent(
+ XEvent *eventPtr, /* Event structure to initialize. */
+ TkWindow *winPtr, /* Window to make event relative to. */
+ int type, /* Message type. */
+ int x, int y, /* Root coords of event. */
+ int state, /* State flags. */
+ int detail) /* Detail value. */
{
eventPtr->type = type;
eventPtr->xany.serial = LastKnownRequestProcessed(winPtr->display);
@@ -97,22 +96,22 @@ InitializeEvent(eventPtr, winPtr, type, x, y, state, detail)
eventPtr->xcrossing.y_root = y;
switch (type) {
- case EnterNotify:
- case LeaveNotify:
- eventPtr->xcrossing.mode = NotifyNormal;
- eventPtr->xcrossing.state = state;
- eventPtr->xcrossing.detail = detail;
- eventPtr->xcrossing.focus = False;
- break;
- case MotionNotify:
- eventPtr->xmotion.state = state;
- eventPtr->xmotion.is_hint = detail;
- break;
- case ButtonPress:
- case ButtonRelease:
- eventPtr->xbutton.state = state;
- eventPtr->xbutton.button = detail;
- break;
+ case EnterNotify:
+ case LeaveNotify:
+ eventPtr->xcrossing.mode = NotifyNormal;
+ eventPtr->xcrossing.state = state;
+ eventPtr->xcrossing.detail = detail;
+ eventPtr->xcrossing.focus = False;
+ break;
+ case MotionNotify:
+ eventPtr->xmotion.state = state;
+ eventPtr->xmotion.is_hint = detail;
+ break;
+ case ButtonPress:
+ case ButtonRelease:
+ eventPtr->xbutton.state = state;
+ eventPtr->xbutton.button = detail;
+ break;
}
TkChangeEventWindow(eventPtr, winPtr);
}
@@ -122,8 +121,8 @@ InitializeEvent(eventPtr, winPtr, type, x, y, state, detail)
*
* GenerateEnterLeave --
*
- * Update the current mouse window and position, and generate
- * any enter/leave events that are needed.
+ * Update the current mouse window and position, and generate any
+ * enter/leave events that are needed.
*
* Results:
* Returns 1 if enter/leave events were generated.
@@ -135,14 +134,14 @@ InitializeEvent(eventPtr, winPtr, type, x, y, state, detail)
*/
static int
-GenerateEnterLeave(winPtr, x, y, state)
- TkWindow *winPtr; /* Current Tk window (or NULL). */
- int x,y; /* Current mouse position in root coords. */
- int state; /* State flags. */
+GenerateEnterLeave(
+ TkWindow *winPtr, /* Current Tk window (or NULL). */
+ int x, int y, /* Current mouse position in root coords. */
+ int state) /* State flags. */
{
int crossed = 0; /* 1 if mouse crossed a window boundary */
- ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
- Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
+ ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
+ Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
TkWindow *restrictWinPtr = tsdPtr->restrictWinPtr;
TkWindow *lastWinPtr = tsdPtr->lastWinPtr;
@@ -154,8 +153,8 @@ GenerateEnterLeave(winPtr, x, y, state)
oldPos = TkPositionInTree(lastWinPtr, restrictWinPtr);
/*
- * Check if the mouse crossed into or out of the restrict
- * window. If so, we need to generate an Enter or Leave event.
+ * Check if the mouse crossed into or out of the restrict window.
+ * If so, we need to generate an Enter or Leave event.
*/
if ((newPos != oldPos) && ((newPos == TK_GRAB_IN_TREE)
@@ -215,8 +214,8 @@ GenerateEnterLeave(winPtr, x, y, state)
*
* Tk_UpdatePointer --
*
- * This function updates the pointer state machine given an
- * the current window, position and modifier state.
+ * This function updates the pointer state machine given an the current
+ * window, position and modifier state.
*
* Results:
* None.
@@ -228,14 +227,14 @@ GenerateEnterLeave(winPtr, x, y, state)
*/
void
-Tk_UpdatePointer(tkwin, x, y, state)
- Tk_Window tkwin; /* Window to which pointer event
- * is reported. May be NULL. */
- int x, y; /* Pointer location in root coords. */
- int state; /* Modifier state mask. */
+Tk_UpdatePointer(
+ Tk_Window tkwin, /* Window to which pointer event is reported.
+ * May be NULL. */
+ int x, int y, /* Pointer location in root coords. */
+ int state) /* Modifier state mask. */
{
- ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
- Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
+ ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
+ Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
TkWindow *winPtr = (TkWindow *)tkwin;
TkWindow *targetWinPtr;
XPoint pos;
@@ -247,15 +246,15 @@ Tk_UpdatePointer(tkwin, x, y, state)
pos.y = y;
/*
- * Use the current keyboard state, but the old mouse button
- * state since we haven't generated the button events yet.
+ * Use the current keyboard state, but the old mouse button state since we
+ * haven't generated the button events yet.
*/
tsdPtr->lastState = (state & ~ALL_BUTTONS) | (tsdPtr->lastState
& ALL_BUTTONS);
/*
- * Generate Enter/Leave events. If the pointer has crossed window
+ * Generate Enter/Leave events. If the pointer has crossed window
* boundaries, update the current mouse position so we don't generate
* redundant motion events.
*/
@@ -272,17 +271,16 @@ Tk_UpdatePointer(tkwin, x, y, state)
for (b = Button1; b <= Button3; b++) {
mask = ButtonMask(b);
if (changes & mask) {
- if (state & mask) {
+ if (state & mask) {
type = ButtonPress;
- /*
+ /*
* ButtonPress - Set restrict window if we aren't grabbed, or
* if this is the first button down.
*/
if (!tsdPtr->restrictWinPtr) {
if (!tsdPtr->grabWinPtr) {
-
/*
* Mouse is not grabbed, so set a button grab.
*/
@@ -291,10 +289,9 @@ Tk_UpdatePointer(tkwin, x, y, state)
TkpSetCapture(tsdPtr->restrictWinPtr);
} else if ((tsdPtr->lastState & ALL_BUTTONS) == 0) {
-
/*
- * Mouse is in a non-button grab, so ensure
- * the button grab is inside the grab tree.
+ * Mouse is in a non-button grab, so ensure the button
+ * grab is inside the grab tree.
*/
if (TkPositionInTree(winPtr, tsdPtr->grabWinPtr)
@@ -310,7 +307,7 @@ Tk_UpdatePointer(tkwin, x, y, state)
} else {
type = ButtonRelease;
- /*
+ /*
* ButtonRelease - Release the mouse capture and clear the
* restrict window when the last button is released and we
* aren't in a global grab.
@@ -323,9 +320,9 @@ Tk_UpdatePointer(tkwin, x, y, state)
}
/*
- * If we are releasing a restrict window, then we need
- * to send the button event followed by mouse motion from
- * the restrict window to the current mouse position.
+ * If we are releasing a restrict window, then we need to send
+ * the button event followed by mouse motion from the restrict
+ * window to the current mouse position.
*/
if (tsdPtr->restrictWinPtr) {
@@ -339,14 +336,14 @@ Tk_UpdatePointer(tkwin, x, y, state)
GenerateEnterLeave(winPtr, x, y, tsdPtr->lastState);
tsdPtr->lastPos = pos;
continue;
- }
+ }
}
/*
- * If a restrict window is set, make sure the pointer event
- * is reported relative to that window. Otherwise, if a
- * global grab is in effect then events outside of windows
- * managed by Tk should be reported to the grab window.
+ * If a restrict window is set, make sure the pointer event is
+ * reported relative to that window. Otherwise, if a global grab
+ * is in effect then events outside of windows managed by Tk
+ * should be reported to the grab window.
*/
if (tsdPtr->restrictWinPtr) {
@@ -372,7 +369,7 @@ Tk_UpdatePointer(tkwin, x, y, state)
*/
tsdPtr->lastState = (type == ButtonPress)
- ? (tsdPtr->lastState | mask) : (tsdPtr->lastState & ~mask);
+ ? (tsdPtr->lastState | mask) : (tsdPtr->lastState & ~mask);
tsdPtr->lastPos = pos;
}
}
@@ -392,8 +389,8 @@ Tk_UpdatePointer(tkwin, x, y, state)
UpdateCursor(targetWinPtr);
/*
- * If no other events caused the position to be updated,
- * generate a motion event.
+ * If no other events caused the position to be updated, generate a motion
+ * event.
*/
if (tsdPtr->lastPos.x != pos.x || tsdPtr->lastPos.y != pos.y) {
@@ -417,42 +414,41 @@ Tk_UpdatePointer(tkwin, x, y, state)
*
* XGrabPointer --
*
- * Capture the mouse so event are reported outside of toplevels.
- * Note that this is a very limited implementation that only
- * supports GrabModeAsync and owner_events True.
+ * Capture the mouse so event are reported outside of toplevels. Note
+ * that this is a very limited implementation that only supports
+ * GrabModeAsync and owner_events True.
*
* Results:
* Always returns GrabSuccess.
*
* Side effects:
- * Turns on mouse capture, sets the global grab pointer, and
- * clears any window restrictions.
+ * Turns on mouse capture, sets the global grab pointer, and clears any
+ * window restrictions.
*
*----------------------------------------------------------------------
*/
int
-XGrabPointer(display, grab_window, owner_events, event_mask, pointer_mode,
- keyboard_mode, confine_to, cursor, time)
- Display* display;
- Window grab_window;
- Bool owner_events;
- unsigned int event_mask;
- int pointer_mode;
- int keyboard_mode;
- Window confine_to;
- Cursor cursor;
- Time time;
+XGrabPointer(
+ Display *display,
+ Window grab_window,
+ Bool owner_events,
+ unsigned int event_mask,
+ int pointer_mode,
+ int keyboard_mode,
+ Window confine_to,
+ Cursor cursor,
+ Time time)
{
- ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
- Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
+ ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
+ Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
display->request++;
tsdPtr->grabWinPtr = (TkWindow *) Tk_IdToWindow(display, grab_window);
tsdPtr->restrictWinPtr = NULL;
TkpSetCapture(tsdPtr->grabWinPtr);
- if (TkPositionInTree(tsdPtr->lastWinPtr, tsdPtr->grabWinPtr)
- != TK_GRAB_IN_TREE) {
+ if (TkPositionInTree(tsdPtr->lastWinPtr, tsdPtr->grabWinPtr)
+ != TK_GRAB_IN_TREE) {
UpdateCursor(tsdPtr->grabWinPtr);
}
return GrabSuccess;
@@ -475,12 +471,12 @@ XGrabPointer(display, grab_window, owner_events, event_mask, pointer_mode,
*/
void
-XUngrabPointer(display, time)
- Display* display;
- Time time;
+XUngrabPointer(
+ Display *display,
+ Time time)
{
- ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
- Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
+ ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
+ Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
display->request++;
tsdPtr->grabWinPtr = NULL;
@@ -506,11 +502,11 @@ XUngrabPointer(display, time)
*/
void
-TkPointerDeadWindow(winPtr)
- TkWindow *winPtr;
+TkPointerDeadWindow(
+ TkWindow *winPtr)
{
- ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
- Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
+ ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
+ Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
if (winPtr == tsdPtr->lastWinPtr) {
tsdPtr->lastWinPtr = NULL;
@@ -531,8 +527,8 @@ TkPointerDeadWindow(winPtr)
*
* UpdateCursor --
*
- * Set the windows global cursor to the cursor associated with
- * the given Tk window.
+ * Set the windows global cursor to the cursor associated with the given
+ * Tk window.
*
* Results:
* None.
@@ -544,17 +540,16 @@ TkPointerDeadWindow(winPtr)
*/
static void
-UpdateCursor(winPtr)
- TkWindow *winPtr;
+UpdateCursor(
+ TkWindow *winPtr)
{
Cursor cursor = None;
- ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
- Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
+ ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
+ Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
/*
- * A window inherits its cursor from its parent if it doesn't
- * have one of its own. Top level windows inherit the default
- * cursor.
+ * A window inherits its cursor from its parent if it doesn't have one of
+ * its own. Top level windows inherit the default cursor.
*/
tsdPtr->cursorWinPtr = winPtr;
@@ -575,10 +570,9 @@ UpdateCursor(winPtr)
*
* XDefineCursor --
*
- * This function is called to update the cursor on a window.
- * Since the mouse might be in the specified window, we need to
- * check the specified window against the current mouse position
- * and grab state.
+ * This function is called to update the cursor on a window. Since the
+ * mouse might be in the specified window, we need to check the specified
+ * window against the current mouse position and grab state.
*
* Results:
* None.
@@ -590,14 +584,14 @@ UpdateCursor(winPtr)
*/
void
-XDefineCursor(display, w, cursor)
- Display* display;
- Window w;
- Cursor cursor;
+XDefineCursor(
+ Display *display,
+ Window w,
+ Cursor cursor)
{
TkWindow *winPtr = (TkWindow *)Tk_IdToWindow(display, w);
- ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
- Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
+ ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
+ Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
if (tsdPtr->cursorWinPtr == winPtr) {
UpdateCursor(winPtr);
@@ -610,10 +604,10 @@ XDefineCursor(display, w, cursor)
*
* TkGenerateActivateEvents --
*
- * This function is called by the Mac and Windows window manager
- * routines when a toplevel window is activated or deactivated.
- * Activate/Deactivate events will be sent to every subwindow of
- * the toplevel followed by a FocusIn/FocusOut message.
+ * This function is called by the Mac and Windows window manager routines
+ * when a toplevel window is activated or deactivated.
+ * Activate/Deactivate events will be sent to every subwindow of the
+ * toplevel followed by a FocusIn/FocusOut message.
*
* Results:
* None.
@@ -625,16 +619,16 @@ XDefineCursor(display, w, cursor)
*/
void
-TkGenerateActivateEvents(winPtr, active)
- TkWindow *winPtr; /* Toplevel to activate. */
- int active; /* Non-zero if the window is being
- * activated, else 0.*/
+TkGenerateActivateEvents(
+ TkWindow *winPtr, /* Toplevel to activate. */
+ int active) /* Non-zero if the window is being activated,
+ * else 0.*/
{
XEvent event;
-
- /*
- * Generate Activate and Deactivate events. This event
- * is sent to every subwindow in a toplevel window.
+
+ /*
+ * Generate Activate and Deactivate events. This event is sent to every
+ * subwindow in a toplevel window.
*/
event.xany.serial = winPtr->display->request++;
@@ -644,5 +638,12 @@ TkGenerateActivateEvents(winPtr, active)
event.xany.type = active ? ActivateNotify : DeactivateNotify;
TkQueueEventForAllChildren(winPtr, &event);
-
}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
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