743 lines
19 KiB
C
743 lines
19 KiB
C
/*
|
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* tkMacOSXMouseEvent.c --
|
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*
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* This file implements functions that decode & handle mouse events on
|
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* MacOS X.
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*
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* Copyright 2001-2009, Apple Inc.
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* Copyright (c) 2005-2009 Daniel A. Steffen <das@users.sourceforge.net>
|
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*
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* See the file "license.terms" for information on usage and redistribution of
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* this file, and for a DISCLAIMER OF ALL WARRANTIES.
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*/
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#include "tkMacOSXPrivate.h"
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#include "tkMacOSXWm.h"
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#include "tkMacOSXEvent.h"
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#include "tkMacOSXDebug.h"
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#include "tkMacOSXConstants.h"
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typedef struct {
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unsigned int state;
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long delta;
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Window window;
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Point global;
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Point local;
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} MouseEventData;
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static Tk_Window captureWinPtr = NULL; /* Current capture window; may be
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* NULL. */
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static int GenerateButtonEvent(MouseEventData *medPtr);
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static unsigned int ButtonModifiers2State(UInt32 buttonState,
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UInt32 keyModifiers);
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#pragma mark TKApplication(TKMouseEvent)
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enum {
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NSWindowWillMoveEventType = 20
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};
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/*
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* In OS X 10.6 an NSEvent of type NSMouseMoved would always have a non-Nil
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* window attribute pointing to the active window. As of 10.8 this behavior
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* had changed. The new behavior was that if the mouse were ever moved outside
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* of a window, all subsequent NSMouseMoved NSEvents would have a Nil window
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* attribute. To work around this the TKApplication remembers the last non-Nil
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* window that it received in a mouse event. If it receives an NSEvent with a
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* Nil window attribute then the saved window is used.
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*/
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@implementation TKApplication(TKMouseEvent)
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- (NSEvent *) tkProcessMouseEvent: (NSEvent *) theEvent
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{
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NSWindow *eventWindow = [theEvent window];
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NSEventType eventType = [theEvent type];
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TkWindow *winPtr = NULL, *grabWinPtr;
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Tk_Window tkwin;
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NSPoint local, global;
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#if 0
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NSTrackingArea *trackingArea = nil;
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NSInteger eventNumber, clickCount, buttonNumber;
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#endif
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[NSEvent stopPeriodicEvents];
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#ifdef TK_MAC_DEBUG_EVENTS
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TKLog(@"-[%@(%p) %s] %@", [self class], self, _cmd, theEvent);
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#endif
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switch (eventType) {
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case NSMouseEntered:
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case NSMouseExited:
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case NSCursorUpdate:
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case NSLeftMouseDown:
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case NSLeftMouseUp:
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case NSRightMouseDown:
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case NSRightMouseUp:
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case NSOtherMouseDown:
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case NSOtherMouseUp:
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case NSLeftMouseDragged:
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case NSRightMouseDragged:
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case NSOtherMouseDragged:
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case NSMouseMoved:
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case NSTabletPoint:
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case NSTabletProximity:
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case NSScrollWheel:
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break;
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default: /* Unrecognized mouse event. */
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return theEvent;
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}
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/*
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* Compute the mouse position in Tk screen coordinates (global) and in the
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* Tk coordinates of its containing Tk Window (local). If a grab is in effect,
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* the local coordinates should be relative to the grab window.
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*/
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if (eventWindow) {
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local = [theEvent locationInWindow];
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global = [eventWindow tkConvertPointToScreen: local];
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tkwin = TkMacOSXGetCapture();
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if (tkwin) {
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winPtr = (TkWindow *) tkwin;
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eventWindow = TkMacOSXDrawableWindow(winPtr->window);
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if (eventWindow) {
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local = [eventWindow tkConvertPointFromScreen: global];
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} else {
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return theEvent;
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}
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}
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local.y = [eventWindow frame].size.height - local.y;
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global.y = TkMacOSXZeroScreenHeight() - global.y;
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} else {
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/*
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* If the event has no NSWindow, the location is in screen coordinates.
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*/
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global = [theEvent locationInWindow];
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tkwin = TkMacOSXGetCapture();
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if (tkwin) {
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winPtr = (TkWindow *) tkwin;
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eventWindow = TkMacOSXDrawableWindow(winPtr->window);
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} else {
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eventWindow = [NSApp mainWindow];
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}
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if (!eventWindow) {
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return theEvent;
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}
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local = [eventWindow tkConvertPointFromScreen: global];
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local.y = [eventWindow frame].size.height - local.y;
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global.y = TkMacOSXZeroScreenHeight() - global.y;
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}
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/*
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* If we still don't have a window, try using the toplevel that
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* manages the NSWindow.
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*/
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if (!tkwin) {
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winPtr = TkMacOSXGetTkWindow(eventWindow);
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tkwin = (Tk_Window) winPtr;
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}
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if (!tkwin) {
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/*
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* We can't find a window for this event. We have to ignore it.
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*/
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#ifdef TK_MAC_DEBUG_EVENTS
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TkMacOSXDbgMsg("tkwin == NULL");
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#endif
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return theEvent;
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}
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/*
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* Ignore the event if a local grab is in effect and the Tk event window is
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* not in the grabber's subtree.
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*/
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grabWinPtr = winPtr->dispPtr->grabWinPtr;
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if (grabWinPtr && /* There is a grab in effect ... */
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!winPtr->dispPtr->grabFlags && /* and it is a local grab ... */
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grabWinPtr->mainPtr == winPtr->mainPtr){ /* in the same application. */
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Tk_Window tkwin2, tkEventWindow = Tk_CoordsToWindow(global.x, global.y, tkwin);
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if (!tkEventWindow) {
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return theEvent;
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}
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for (tkwin2 = tkEventWindow;
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!Tk_IsTopLevel(tkwin2);
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tkwin2 = Tk_Parent(tkwin2)) {
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if (tkwin2 == (Tk_Window) grabWinPtr) {
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break;
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}
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}
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if (tkwin2 != (Tk_Window) grabWinPtr) {
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return theEvent;
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}
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}
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/*
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* Convert local from NSWindow flipped coordinates to the toplevel's
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* coordinates.
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*/
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if (Tk_IsEmbedded(winPtr)) {
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TkWindow *contPtr = TkpGetOtherWindow(winPtr);
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if (Tk_IsTopLevel(contPtr)) {
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local.x -= contPtr->wmInfoPtr->xInParent;
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local.y -= contPtr->wmInfoPtr->yInParent;
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} else {
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TkWindow *topPtr = TkMacOSXGetHostToplevel(winPtr)->winPtr;
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local.x -= (topPtr->wmInfoPtr->xInParent + contPtr->changes.x);
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local.y -= (topPtr->wmInfoPtr->yInParent + contPtr->changes.y);
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}
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} else {
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local.x -= winPtr->wmInfoPtr->xInParent;
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local.y -= winPtr->wmInfoPtr->yInParent;
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}
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/*
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* Use the toplevel coordinates to find the containing Tk window. Then
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* convert local into the coordinates of that window. (The converted
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* local coordinates are only needed for scrollwheel events.)
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*/
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int win_x, win_y;
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tkwin = Tk_TopCoordsToWindow(tkwin, local.x, local.y, &win_x, &win_y);
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local.x = win_x;
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local.y = win_y;
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/*
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* Generate an XEvent for this mouse event.
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*/
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unsigned int state = 0;
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int button = [theEvent buttonNumber] + Button1;
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EventRef eventRef = (EventRef)[theEvent eventRef];
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UInt32 buttons;
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OSStatus err = GetEventParameter(eventRef, kEventParamMouseChord,
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typeUInt32, NULL, sizeof(UInt32), NULL, &buttons);
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if (err == noErr) {
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state |= (buttons & 0x1F) * Button1Mask;
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} else if (button <= Button5) {
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switch (eventType) {
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case NSLeftMouseDown:
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case NSRightMouseDown:
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case NSLeftMouseDragged:
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case NSRightMouseDragged:
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case NSOtherMouseDown:
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state |= TkGetButtonMask(button);
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break;
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default:
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break;
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}
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}
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NSUInteger modifiers = [theEvent modifierFlags];
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if (modifiers & NSAlphaShiftKeyMask) {
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state |= LockMask;
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}
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if (modifiers & NSShiftKeyMask) {
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state |= ShiftMask;
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}
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if (modifiers & NSControlKeyMask) {
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state |= ControlMask;
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}
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if (modifiers & NSCommandKeyMask) {
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state |= Mod1Mask; /* command key */
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}
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if (modifiers & NSAlternateKeyMask) {
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state |= Mod2Mask; /* option key */
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}
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if (modifiers & NSNumericPadKeyMask) {
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state |= Mod3Mask;
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}
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if (modifiers & NSFunctionKeyMask) {
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state |= Mod4Mask;
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}
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if (eventType != NSScrollWheel) {
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/*
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* For normal mouse events, Tk_UpdatePointer will send the XEvent.
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*/
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#ifdef TK_MAC_DEBUG_EVENTS
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TKLog(@"UpdatePointer %p x %f.0 y %f.0 %d",
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tkwin, global.x, global.y, state);
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#endif
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Tk_UpdatePointer(tkwin, global.x, global.y, state);
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} else {
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/*
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* For scroll wheel events we need to send the XEvent here.
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*/
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CGFloat delta;
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int coarseDelta;
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XEvent xEvent;
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xEvent.type = MouseWheelEvent;
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xEvent.xbutton.x = local.x;
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xEvent.xbutton.y = local.y;
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xEvent.xbutton.x_root = global.x;
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xEvent.xbutton.y_root = global.y;
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xEvent.xany.send_event = false;
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xEvent.xany.display = Tk_Display(tkwin);
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xEvent.xany.window = Tk_WindowId(tkwin);
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delta = [theEvent deltaY];
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if (delta != 0.0) {
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coarseDelta = (delta > -1.0 && delta < 1.0) ?
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(signbit(delta) ? -1 : 1) : lround(delta);
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xEvent.xbutton.state = state;
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xEvent.xkey.keycode = coarseDelta;
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xEvent.xany.serial = LastKnownRequestProcessed(Tk_Display(tkwin));
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Tk_QueueWindowEvent(&xEvent, TCL_QUEUE_TAIL);
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}
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delta = [theEvent deltaX];
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if (delta != 0.0) {
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coarseDelta = (delta > -1.0 && delta < 1.0) ?
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(signbit(delta) ? -1 : 1) : lround(delta);
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xEvent.xbutton.state = state | ShiftMask;
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xEvent.xkey.keycode = coarseDelta;
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xEvent.xany.serial = LastKnownRequestProcessed(Tk_Display(tkwin));
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Tk_QueueWindowEvent(&xEvent, TCL_QUEUE_TAIL);
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}
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}
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return theEvent;
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}
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@end
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#pragma mark -
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||
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/*
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*----------------------------------------------------------------------
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*
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* TkMacOSXKeyModifiers --
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*
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* Returns the current state of the modifier keys.
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*
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* Results:
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* An OS Modifier state.
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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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EventModifiers
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TkMacOSXModifierState(void)
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{
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UInt32 keyModifiers;
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int isFrontProcess = (GetCurrentEvent() && Tk_MacOSXIsAppInFront());
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keyModifiers = isFrontProcess ? GetCurrentEventKeyModifiers() :
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GetCurrentKeyModifiers();
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return (EventModifiers) (keyModifiers & USHRT_MAX);
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}
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/*
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*----------------------------------------------------------------------
|
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*
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* TkMacOSXButtonKeyState --
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*
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* Returns the current state of the button & modifier keys.
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*
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* Results:
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* A bitwise inclusive OR of a subset of the following: Button1Mask,
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* ShiftMask, LockMask, ControlMask, Mod*Mask.
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||
*
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||
* Side effects:
|
||
* None.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
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unsigned int
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TkMacOSXButtonKeyState(void)
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{
|
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UInt32 buttonState = 0, keyModifiers;
|
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int isFrontProcess = (GetCurrentEvent() && Tk_MacOSXIsAppInFront());
|
||
|
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buttonState = isFrontProcess ? GetCurrentEventButtonState() :
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GetCurrentButtonState();
|
||
keyModifiers = isFrontProcess ? GetCurrentEventKeyModifiers() :
|
||
GetCurrentKeyModifiers();
|
||
|
||
return ButtonModifiers2State(buttonState, keyModifiers);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
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* ButtonModifiers2State --
|
||
*
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* Converts Carbon mouse button state and modifier values into a Tk
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* button/modifier state.
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||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* None.
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||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
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static unsigned int
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ButtonModifiers2State(
|
||
UInt32 buttonState,
|
||
UInt32 keyModifiers)
|
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{
|
||
unsigned int state;
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||
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||
/*
|
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* Tk on OSX supports at most 5 buttons.
|
||
*/
|
||
|
||
state = (buttonState & 0x1F) * Button1Mask;
|
||
|
||
if (keyModifiers & alphaLock) {
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state |= LockMask;
|
||
}
|
||
if (keyModifiers & shiftKey) {
|
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state |= ShiftMask;
|
||
}
|
||
if (keyModifiers & controlKey) {
|
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state |= ControlMask;
|
||
}
|
||
if (keyModifiers & cmdKey) {
|
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state |= Mod1Mask; /* command key */
|
||
}
|
||
if (keyModifiers & optionKey) {
|
||
state |= Mod2Mask; /* option key */
|
||
}
|
||
if (keyModifiers & kEventKeyModifierNumLockMask) {
|
||
state |= Mod3Mask;
|
||
}
|
||
if (keyModifiers & kEventKeyModifierFnMask) {
|
||
state |= Mod4Mask;
|
||
}
|
||
|
||
return state;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* XQueryPointer --
|
||
*
|
||
* Check the current state of the mouse. This is not a complete
|
||
* implementation of this function. It only computes the root coordinates
|
||
* and the current mask.
|
||
*
|
||
* Results:
|
||
* Sets root_x_return, root_y_return, and mask_return. Returns true on
|
||
* success.
|
||
*
|
||
* Side effects:
|
||
* None.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
Bool
|
||
XQueryPointer(
|
||
Display *display,
|
||
Window w,
|
||
Window *root_return,
|
||
Window *child_return,
|
||
int *root_x_return,
|
||
int *root_y_return,
|
||
int *win_x_return,
|
||
int *win_y_return,
|
||
unsigned int *mask_return)
|
||
{
|
||
int getGlobal = (root_x_return && root_y_return);
|
||
int getLocal = (win_x_return && win_y_return && w != None);
|
||
|
||
if (getGlobal || getLocal) {
|
||
NSPoint global = [NSEvent mouseLocation];
|
||
|
||
if (getLocal) {
|
||
MacDrawable *macWin = (MacDrawable *) w;
|
||
NSWindow *win = TkMacOSXDrawableWindow(w);
|
||
|
||
if (win) {
|
||
NSPoint local;
|
||
|
||
local = [win tkConvertPointFromScreen:global];
|
||
local.y = [win frame].size.height - local.y;
|
||
if (macWin->winPtr && macWin->winPtr->wmInfoPtr) {
|
||
local.x -= macWin->winPtr->wmInfoPtr->xInParent;
|
||
local.y -= macWin->winPtr->wmInfoPtr->yInParent;
|
||
}
|
||
*win_x_return = local.x;
|
||
*win_y_return = local.y;
|
||
}
|
||
}
|
||
if (getGlobal) {
|
||
*root_x_return = global.x;
|
||
*root_y_return = TkMacOSXZeroScreenHeight() - global.y;
|
||
}
|
||
}
|
||
if (mask_return) {
|
||
*mask_return = TkMacOSXButtonKeyState();
|
||
}
|
||
return True;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* TkGenerateButtonEventForXPointer --
|
||
*
|
||
* This procedure generates an X button event for the current pointer
|
||
* state as reported by XQueryPointer().
|
||
*
|
||
* Results:
|
||
* True if event(s) are generated - false otherwise.
|
||
*
|
||
* Side effects:
|
||
* Additional events may be place on the Tk event queue. Grab state may
|
||
* also change.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
MODULE_SCOPE int
|
||
TkGenerateButtonEventForXPointer(
|
||
Window window) /* X Window containing button event. */
|
||
{
|
||
MouseEventData med;
|
||
int global_x, global_y, local_x, local_y;
|
||
|
||
bzero(&med, sizeof(MouseEventData));
|
||
XQueryPointer(NULL, window, NULL, NULL, &global_x, &global_y,
|
||
&local_x, &local_y, &med.state);
|
||
med.global.h = global_x;
|
||
med.global.v = global_y;
|
||
med.local.h = local_x;
|
||
med.local.v = local_y;
|
||
med.window = window;
|
||
|
||
return GenerateButtonEvent(&med);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* TkGenerateButtonEvent --
|
||
*
|
||
* Given a global x & y position and the button key status this procedure
|
||
* generates the appropriate X button event. It also handles the state
|
||
* changes needed to implement implicit grabs.
|
||
*
|
||
* Results:
|
||
* True if event(s) are generated, false otherwise.
|
||
*
|
||
* Side effects:
|
||
* Additional events may be place on the Tk event queue. Grab state may
|
||
* also change.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
int
|
||
TkGenerateButtonEvent(
|
||
int x, /* X location of mouse, */
|
||
int y, /* Y location of mouse. */
|
||
Window window, /* X Window containing button event. */
|
||
unsigned int state) /* Button Key state suitable for X event. */
|
||
{
|
||
MacDrawable *macWin = (MacDrawable *) window;
|
||
NSWindow *win = TkMacOSXDrawableWindow(window);
|
||
MouseEventData med;
|
||
|
||
bzero(&med, sizeof(MouseEventData));
|
||
med.state = state;
|
||
med.window = window;
|
||
med.global.h = x;
|
||
med.global.v = y;
|
||
med.local = med.global;
|
||
|
||
if (win) {
|
||
NSPoint local = NSMakePoint(x, TkMacOSXZeroScreenHeight() - y);
|
||
|
||
local = [win tkConvertPointFromScreen:local];
|
||
local.y = [win frame].size.height - local.y;
|
||
if (macWin->winPtr && macWin->winPtr->wmInfoPtr) {
|
||
local.x -= macWin->winPtr->wmInfoPtr->xInParent;
|
||
local.y -= macWin->winPtr->wmInfoPtr->yInParent;
|
||
}
|
||
med.local.h = local.x;
|
||
med.local.v = TkMacOSXZeroScreenHeight() - local.y;
|
||
}
|
||
|
||
return GenerateButtonEvent(&med);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* GenerateButtonEvent --
|
||
*
|
||
* Generate an X button event from a MouseEventData structure. Handles
|
||
* the state changes needed to implement implicit grabs.
|
||
*
|
||
* Results:
|
||
* True if event(s) are generated - false otherwise.
|
||
*
|
||
* Side effects:
|
||
* Additional events may be place on the Tk event queue. Grab state may
|
||
* also change.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static int
|
||
GenerateButtonEvent(
|
||
MouseEventData *medPtr)
|
||
{
|
||
Tk_Window tkwin;
|
||
int dummy;
|
||
TkDisplay *dispPtr;
|
||
|
||
#if UNUSED
|
||
|
||
/*
|
||
* ButtonDown events will always occur in the front window. ButtonUp
|
||
* events, however, may occur anywhere on the screen. ButtonUp events
|
||
* should only be sent to Tk if in the front window or during an implicit
|
||
* grab.
|
||
*/
|
||
|
||
if ((medPtr->activeNonFloating == NULL)
|
||
|| ((!(TkpIsWindowFloating(medPtr->whichWin))
|
||
&& (medPtr->activeNonFloating != medPtr->whichWin))
|
||
&& TkMacOSXGetCapture() == NULL)) {
|
||
return false;
|
||
}
|
||
#endif
|
||
|
||
dispPtr = TkGetDisplayList();
|
||
tkwin = Tk_IdToWindow(dispPtr->display, medPtr->window);
|
||
|
||
if (tkwin != NULL) {
|
||
tkwin = Tk_TopCoordsToWindow(tkwin, medPtr->local.h, medPtr->local.v,
|
||
&dummy, &dummy);
|
||
}
|
||
|
||
Tk_UpdatePointer(tkwin, medPtr->global.h, medPtr->global.v, medPtr->state);
|
||
return true;
|
||
}
|
||
|
||
void
|
||
TkpWarpPointer(
|
||
TkDisplay *dispPtr)
|
||
{
|
||
CGPoint pt;
|
||
NSPoint loc;
|
||
int wNum;
|
||
|
||
if (dispPtr->warpWindow) {
|
||
int x, y;
|
||
TkWindow *winPtr = (TkWindow *) dispPtr->warpWindow;
|
||
TkWindow *topPtr = winPtr->privatePtr->toplevel->winPtr;
|
||
NSWindow *w = TkMacOSXDrawableWindow(winPtr->window);
|
||
wNum = [w windowNumber];
|
||
Tk_GetRootCoords(dispPtr->warpWindow, &x, &y);
|
||
pt.x = x + dispPtr->warpX;
|
||
pt.y = y + dispPtr->warpY;
|
||
loc.x = dispPtr->warpX;
|
||
loc.y = Tk_Height(topPtr) - dispPtr->warpY;
|
||
} else {
|
||
wNum = 0;
|
||
pt.x = loc.x = dispPtr->warpX;
|
||
pt.y = dispPtr->warpY;
|
||
loc.y = TkMacOSXZeroScreenHeight() - pt.y;
|
||
}
|
||
|
||
/*
|
||
* Generate an NSEvent of type NSMouseMoved.
|
||
*
|
||
* It is not clear why this is necessary. For example, calling
|
||
* event generate $w <Motion> -warp 1 -x $X -y $Y
|
||
* will cause two <Motion> events to be added to the Tcl queue.
|
||
*/
|
||
|
||
CGWarpMouseCursorPosition(pt);
|
||
NSEvent *warpEvent = [NSEvent mouseEventWithType:NSMouseMoved
|
||
location:loc
|
||
modifierFlags:0
|
||
timestamp:GetCurrentEventTime()
|
||
windowNumber:wNum
|
||
context:nil
|
||
eventNumber:0
|
||
clickCount:1
|
||
pressure:0.0];
|
||
[NSApp postEvent:warpEvent atStart:NO];
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* TkpSetCapture --
|
||
*
|
||
* This function captures the mouse so that all future events will be
|
||
* reported to this window, even if the mouse is outside the window. If
|
||
* the specified window is NULL, then the mouse is released.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* Sets the capture flag and captures the mouse.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
void
|
||
TkpSetCapture(
|
||
TkWindow *winPtr) /* Capture window, or NULL. */
|
||
{
|
||
while (winPtr && !Tk_IsTopLevel(winPtr)) {
|
||
winPtr = winPtr->parentPtr;
|
||
}
|
||
[NSEvent stopPeriodicEvents];
|
||
captureWinPtr = (Tk_Window) winPtr;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* TkMacOSXGetCapture --
|
||
*
|
||
* Results:
|
||
* Returns the current grab window
|
||
*
|
||
* Side effects:
|
||
* None.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
Tk_Window
|
||
TkMacOSXGetCapture(void)
|
||
{
|
||
return captureWinPtr;
|
||
}
|
||
|
||
/*
|
||
* Local Variables:
|
||
* mode: objc
|
||
* c-basic-offset: 4
|
||
* fill-column: 79
|
||
* coding: utf-8
|
||
* End:
|
||
*/
|