eudora-mac/listcdef.c

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// Copyright ¨ 1996 by QUALCOMM Incorporated
#define FILE_NUM 84
#include "listcdef.h"

#pragma segment ListCdef

typedef long CdefFunc(short varCode, ControlHandle theControl, short message, long param);

CdefFunc ListCdefDraw, ListCdefTest, ListCdefCalc, ListCdefInit,
				 ListCdefDisp, ListCdefTrack;

CdefFunc *ListCdefFuncs[] =
{
	ListCdefDraw,
	ListCdefTest,
	ListCdefCalc,
	ListCdefInit,
	ListCdefDisp,
	nil, /* pos */
	nil, /* thumb */
	nil, /* drag */
	ListCdefTrack, /* track */
	nil, /* mystery */
	ListCdefCalc,
	ListCdefCalc
};

static callingLClick;

/**********************************************************************
 * LCGetList - get the list out of the control
 **********************************************************************/
ListHandle LCGetList(ControlHandle cntl)
{
	return((ListHandle)GetControlDataHandle(cntl));
}

/**********************************************************************
 * LCSetList - set the list for a control
 **********************************************************************/
void LCSetList(ControlHandle cntl,ListHandle list)
{
	if (LCGetList(cntl)) LDispose(LCGetList(cntl));
	SetControlDataHandle(cntl,(void*)list);
}

/**********************************************************************
 * ListCdef - CDEF for a control that gives a list manager box
 **********************************************************************/
pascal long ListCdef(short varCode, ControlHandle theControl, short message, long param)
{
	if (message<(sizeof(ListCdefFuncs)/sizeof(CdefFunc*)) && ListCdefFuncs[message])
		return((*ListCdefFuncs[message])(varCode,theControl,message,param));
	else return(0);
}

/**********************************************************************
 * ListCdefDraw - draw the list cdef
 **********************************************************************/
long ListCdefDraw(short varCode, ControlHandle theControl, short message, long param)
{
	Rect r;
	ListHandle list = LCGetList(theControl);

	GetControlBounds(theControl,&r);
	if (list) LUpdate(MyGetPortVisibleRegion(GetWindowPort(GetControlOwner(theControl))),list);
	FrameRect(&r);
	return(0);
}

/**********************************************************************
 * ListCdefTest - test a point to see if it's in the CDEF
 **********************************************************************/
long ListCdefTest(short varCode, ControlHandle theControl, short message, long param)
{
	Point mouse;
	Rect r;
	
	GetControlBounds(theControl,&r);
	mouse.v = (param>>16)&0xffff;
	mouse.h = param&0xffff;

	/*
	 * make sure that LClick sees its scroll bar rather
	 * than this control
	 */
	if (callingLClick) r.right -= GROW_SIZE;
	
	return(PtInRect(mouse,&r));
}

/**********************************************************************
 * ListCdefCalc - calculate region for cdef
 **********************************************************************/
long ListCdefCalc(short varCode, ControlHandle theControl, short message, long param)
{
	Rect r;
	
	GetControlBounds(theControl,&r);
	if (message==calcCRgns) param &= 0x00ffffff;
	RectRgn((RgnHandle)param,&r);
	return(0);
}

/**********************************************************************
 * ListCdefInit - initialize
 **********************************************************************/
long ListCdefInit(short varCode, ControlHandle theControl, short message, long param)
{
	MyWindowPtr	win = GetWindowMyWindowPtr (GetControlOwner(theControl));
	ListHandle list;
	Point cSize;
	Rect bounds;
	Rect r;
	OSErr err = noErr;
	
	// Calculate sizes
	GetControlBounds(theControl,&r);
	InsetRect(&r,1,1);
	r.right -= GROW_SIZE;
	SetRect(&bounds,0,0,1,0);
	cSize.h = RectWi(r);
	cSize.v = win ? win->vPitch + 2 : 0;
	if (list = LNew(&r,&bounds,cSize,nil,GetControlOwner(theControl),True,False,False,True))
	{
		LCSetList(theControl,list);
		if (win) (*list)->indent.v = win->vPitch-2;
	}
	else err = MemError();
	SetControlAction(theControl,(void*)-1);
	
	return(err);
}

/**********************************************************************
 * ListCdefDisp - dispose of the list cdef
 **********************************************************************/
long ListCdefDisp(short varCode, ControlHandle theControl, short message, long param)
{
	ListHandle list = LCGetList(theControl);
	if (list)
	{
		(*list)->hScroll = (*list)->vScroll = nil;
		LDispose(list);
	}
	return(0);
}

/**********************************************************************
 * ListCdefTrack - track the mouse
 **********************************************************************/
long ListCdefTrack(short varCode, ControlHandle theControl, short message, long param)
{
	Point pt = MainEvent.where;
	ListHandle list = LCGetList(theControl);
	callingLClick = True;	// make sure that LClick sees its scroll bar rather
										// than this control
	GlobalToLocal(&pt);
	LClick(pt, MainEvent.modifiers, list);
	callingLClick = False;
	return(1);
}