ciderpress/util/MySpinCtrl.cpp

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/*
* CiderPress
* Copyright (C) 2007 by faddenSoft, LLC. All Rights Reserved.
* See the file LICENSE for distribution terms.
*/
/*
* Replacement spin control. This one has a 32-bit range and doesn't
* have the weird wrap-under behavior in hex mode.
*/
#include "stdafx.h"
#include "MySpinCtrl.h"
/*
* Grab the notification that tells us an update has been made.
*/
BEGIN_MESSAGE_MAP(MySpinCtrl, CSpinButtonCtrl)
ON_NOTIFY_REFLECT(UDN_DELTAPOS, OnDeltaPos)
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END_MESSAGE_MAP()
#if 0
// This is called by MFC after the window's HWND has been bound to the
// MySpinCtrl object, but before the subclassing occurs. Note that this class
// never gets WM_CREATE, because that comes before the subclassing occurs.
void MySpinCtrl::PreSubclassWindow()
{
_ASSERTE(! (UDS_SETBUDDYINT & GetStyle()) && "'Auto Buddy Int' style *MUST NOT* be checked");
_ASSERTE( (UDS_AUTOBUDDY & GetStyle()) && "'Auto Buddy' style *MUST* be checked");
// Do this so that, the first time, the up/down arrows work in the right
// direction, and the range is a reasonable value.
CSpinButtonCtrl::SetRange(fLow, fHigh);
SetRange(fLow, fHigh);
CSpinButtonCtrl::PreSubclassWindow();
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}
#endif
/*
* Convert a decimal or hex string to a long.
*
* Returns "true" on success, "false" on error.
*/
bool
MySpinCtrl::ConvLong(const char* str, long* pVal) const
{
char* endp;
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*pVal = strtol(str, &endp, GetBase());
if (endp == str || *endp != '\0')
return false;
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return true;
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}
/*
* Handle UDN_DELTAPOS notification.
*/
void
MySpinCtrl::OnDeltaPos(NMHDR* pNMHDR, LRESULT* pResult)
{
_ASSERTE(! (UDS_SETBUDDYINT & GetStyle()) && "'Auto Buddy Int' style *MUST* be unchecked");
// _ASSERTE( (UDS_AUTOBUDDY & GetStyle()) && "'Auto Buddy' style *MUST* be checked");
_ASSERTE( (UDS_NOTHOUSANDS & GetStyle()) && "'No Thousands' style *MUST* be checked");
NM_UPDOWN* pNMUpDown = (NM_UPDOWN*)pNMHDR;
/* grab value from buddy ctrl */
ASSERT(GetBuddy() != nil);
CString buddyStr;
GetBuddy()->GetWindowText(buddyStr);
long buddyVal, proposedVal;
if (!ConvLong(buddyStr, &buddyVal))
goto bail; // bad string
proposedVal = buddyVal - pNMUpDown->iDelta;
/* peg at the end */
if (proposedVal < fLow)
proposedVal = fLow;
if (proposedVal > fHigh)
proposedVal = fHigh;
if (proposedVal != buddyVal) {
/* set buddy control to new value */
if (GetBase() == 10)
buddyStr.Format("%d", proposedVal);
else
buddyStr.Format("%X", proposedVal);
GetBuddy()->SetWindowText(buddyStr);
}
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bail:
*pResult = 0;
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}
/*
* Set the current position.
*
* Returns the previous position.
*/
int
MySpinCtrl::SetPos(int nPos)
{
_ASSERTE(! (UDS_SETBUDDYINT & GetStyle()) && "'Auto Buddy Int' style *MUST* be unchecked");
// _ASSERTE( (UDS_AUTOBUDDY & GetStyle()) && "'Auto Buddy' style *MUST* be checked");
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CString buddyStr;
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if (nPos < fLow || nPos > fHigh) {
//WMSG0(" MSP setpos out of range\n");
return -1;
}
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if (GetBase() == 10)
buddyStr.Format("%d", nPos);
else
buddyStr.Format("%X", nPos);
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GetBuddy()->SetWindowText(buddyStr);
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return -1; // broken
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}
/*
* Get the current position.
*
* Returns -1 on error. Yes, that's bogus, but it's good enough for now.
*/
int
MySpinCtrl::GetPos() const
{
_ASSERTE(! (UDS_SETBUDDYINT & GetStyle()) && "'Auto Buddy Int' style *MUST* be unchecked");
// _ASSERTE( (UDS_AUTOBUDDY & GetStyle()) && "'Auto Buddy' style *MUST* be checked");
// Grab buddy edit control value.
CString buddyStr;
GetBuddy()->GetWindowText(buddyStr);
long val;
if (!ConvLong(buddyStr, &val))
return -1;
if (val < fLow || val > fHigh)
return -1;
// if they typed a "sloppy value" in, make it look nice
CString reformatStr;
if (GetBase() == 10)
reformatStr.Format("%d", val);
else
reformatStr.Format("%X", val);
if (buddyStr != reformatStr)
GetBuddy()->SetWindowText(reformatStr);
return val;
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}
DWORD
MySpinCtrl::GetRange(void) const
{
_ASSERTE(! "Do NOT use this method!");
return 0;
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}
/*
* Get 32-bit ranges.
*/
void
MySpinCtrl::GetRange32(int& lower, int& upper) const
{
lower = fLow;
upper = fHigh;
//WMSG2(" MSP getting lower=%d upper=%d\n", lower, upper);
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}
/*
* Set 32-bit ranges.
*/
void
MySpinCtrl::SetRange32(int nLo, int nHi)
{
_ASSERTE(! (UDS_SETBUDDYINT & GetStyle()) && "'Auto Buddy Int' style *MUST* be unchecked");
// _ASSERTE( (UDS_AUTOBUDDY & GetStyle()) && "'Auto Buddy' style *MUST* be checked");
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fLow = nLo;
fHigh = nHi;
//WMSG2(" MSP setting lower=%d upper=%d\n", fLow, fHigh);
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}