ciderpress/app/NewDiskSize.cpp

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2007-03-27 17:47:10 +00:00
/*
* CiderPress
* Copyright (C) 2007 by faddenSoft, LLC. All Rights Reserved.
* See the file LICENSE for distribution terms.
*/
/*
* Functions and data to support the "new disk size" radio buttons.
*/
#include "stdafx.h"
#include "NewDiskSize.h"
#include "resource.h"
/*
* Number of blocks in the disks we create.
*
* These must be in ascending order.
*/
/*static*/ const NewDiskSize::RadioCtrlMap NewDiskSize::kCtrlMap[] = {
{ IDC_CONVDISK_140K, 280 },
{ IDC_CONVDISK_800K, 1600 },
{ IDC_CONVDISK_1440K, 2880 },
{ IDC_CONVDISK_5MB, 10240 },
{ IDC_CONVDISK_16MB, 32768 },
{ IDC_CONVDISK_20MB, 40960 },
{ IDC_CONVDISK_32MB, 65535 },
{ IDC_CONVDISK_SPECIFY, kSpecified },
};
static const kEditBoxID = IDC_CONVDISK_SPECIFY_EDIT;
/*
* Return the #of entries in the table.
*/
/*static*/ unsigned int
NewDiskSize::GetNumSizeEntries(void)
{
return NELEM(kCtrlMap);
}
/*
* Return the "size" field from an array entry.
*/
/*static*/ long
NewDiskSize::GetDiskSizeByIndex(int idx)
{
ASSERT(idx >= 0 && idx < NELEM(kCtrlMap));
return kCtrlMap[idx].blocks;
}
/*static*/ void
NewDiskSize::EnableButtons(CDialog* pDialog, BOOL state /*=true*/)
{
CWnd* pWnd;
for (int i = 0; i < NELEM(kCtrlMap); i++) {
pWnd = pDialog->GetDlgItem(kCtrlMap[i].ctrlID);
if (pWnd != nil)
pWnd->EnableWindow(state);
}
}
/*
* Run through the set of radio buttons, disabling any that don't have enough
* space to hold the ProDOS volume with the specified parameters.
*
* The space required is equal to the blocks required for data plus the blocks
* required for the free-space bitmap. Since the free-space bitmap size is
* smaller for smaller volumes, we have to adjust it for each.
*
* Pass in the total blocks and #of blocks used on a particular ProDOS volume.
* This will compute how much space would be required for larger and smaller
* volumes, and enable or disable radio buttons as appropriate. (You can get
* these values from DiskFS::GetFreeBlockCount()).
*/
/*static*/ void
NewDiskSize::EnableButtons_ProDOS(CDialog* pDialog, long totalBlocks,
long blocksUsed)
{
CButton* pButton;
long usedWithoutBitmap = blocksUsed - GetNumBitmapBlocks_ProDOS(totalBlocks);
bool first = true;
WMSG3("EnableButtons_ProDOS total=%ld used=%ld usedw/o=%ld\n",
totalBlocks, blocksUsed, usedWithoutBitmap);
for (int i = 0; i < NELEM(kCtrlMap); i++) {
pButton = (CButton*) pDialog->GetDlgItem(kCtrlMap[i].ctrlID);
if (pButton == nil) {
WMSG1("WARNING: couldn't find ctrlID %d\n", kCtrlMap[i].ctrlID);
continue;
}
if (kCtrlMap[i].blocks == kSpecified) {
pButton->SetCheck(BST_UNCHECKED);
pButton->EnableWindow(TRUE);
CWnd* pWnd = pDialog->GetDlgItem(kEditBoxID);
pWnd->EnableWindow(FALSE);
continue;
}
if (usedWithoutBitmap + GetNumBitmapBlocks_ProDOS(kCtrlMap[i].blocks) <=
kCtrlMap[i].blocks)
{
pButton->EnableWindow(TRUE);
if (first) {
pButton->SetCheck(BST_CHECKED);
first = false;
} else {
pButton->SetCheck(BST_UNCHECKED);
}
} else {
pButton->EnableWindow(FALSE);
pButton->SetCheck(BST_UNCHECKED);
}
}
UpdateSpecifyEdit(pDialog);
}
/*
* Compute the #of blocks needed to hold the ProDOS block bitmap.
*/
/*static*/long
NewDiskSize::GetNumBitmapBlocks_ProDOS(long totalBlocks) {
ASSERT(totalBlocks > 0);
const int kBitsPerBlock = 512 * 8;
int numBlocks = (totalBlocks + kBitsPerBlock-1) / kBitsPerBlock;
return numBlocks;
}
/*
* Update the "specify size" edit box.
*/
/*static*/ void
NewDiskSize::UpdateSpecifyEdit(CDialog* pDialog)
{
CEdit* pEdit = (CEdit*) pDialog->GetDlgItem(kEditBoxID);
int i;
if (pEdit == nil) {
ASSERT(false);
return;
}
for (i = 0; i < NELEM(kCtrlMap); i++) {
CButton* pButton = (CButton*) pDialog->GetDlgItem(kCtrlMap[i].ctrlID);
if (pButton == nil) {
WMSG1("WARNING: couldn't find ctrlID %d\n", kCtrlMap[i].ctrlID);
continue;
}
if (pButton->GetCheck() == BST_CHECKED) {
if (kCtrlMap[i].blocks == kSpecified)
return;
break;
}
}
if (i == NELEM(kCtrlMap)) {
WMSG0("WARNING: couldn't find a checked radio button\n");
return;
}
CString fmt;
fmt.Format("%ld", kCtrlMap[i].blocks);
pEdit->SetWindowText(fmt);
}