Mercurial > vba-linux

     1 // MemoryViewer.cpp : implementation file

     2 //

     3 

     4 #include "stdafx.h"

     5 #include "resource.h"

     6 #include "MemoryViewer.h"

     7 

     8 extern int emulating;

     9 

    10 /////////////////////////////////////////////////////////////////////////////

    11 // MemoryViewer

    12 

    13 bool MemoryViewer::isRegistered = false;

    14 

    15 MemoryViewer::MemoryViewer()

    16 {

    17 	address        = 0;

    18 	addressSize    = 0;

    19 	dataSize       = 0;

    20 	editAddress    = 0;

    21 	editNibble     = 0;

    22 	displayedLines = 0;

    23 	hasCaret       = false;

    24 	maxNibble      = 0;

    25 	font        = (HFONT)GetStockObject(SYSTEM_FIXED_FONT);

    26 	fontSize.cx = fontSize.cy = 0;

    27 	beginAscii  = 0;

    28 	beginHex    = 0;

    29 	dlg         = NULL;

    30 	registerClass();

    31 }

    32 

    33 MemoryViewer::~MemoryViewer()

    34 {}

    35 

    36 BEGIN_MESSAGE_MAP(MemoryViewer, CWnd)

    37 //{{AFX_MSG_MAP(MemoryViewer)

    38 ON_WM_ERASEBKGND()

    39 ON_WM_PAINT()

    40 ON_WM_VSCROLL()

    41 ON_WM_GETDLGCODE()

    42 ON_WM_LBUTTONDOWN()

    43 ON_WM_SETFOCUS()

    44 ON_WM_KILLFOCUS()

    45 ON_WM_KEYDOWN()

    46 //}}AFX_MSG_MAP

    47 ON_MESSAGE(WM_CHAR, OnWMChar)

    48 END_MESSAGE_MAP()

    49 

    50 /////////////////////////////////////////////////////////////////////////////

    51 // MemoryViewer message handlers

    52 

    53 void MemoryViewer::setDialog(IMemoryViewerDlg *d)

    54 {

    55 	dlg = d;

    56 }

    57 

    58 void MemoryViewer::setAddress(u32 a)

    59 {

    60 	address = a;

    61 	if (displayedLines)

    62 	{

    63 		if (addressSize)

    64 		{

    65 			u16 addr = address;

    66 			if ((u16)((addr+(displayedLines<<4)) & 0xFFFF) < addr)

    67 			{

    68 				address = 0xffff - (displayedLines<<4) + 1;

    69 			}

    70 		}

    71 		else

    72 		{

    73 			if ((address+(displayedLines<<4)) < address)

    74 			{

    75 				address = 0xffffffff - (displayedLines<<4) + 1;

    76 			}

    77 		}

    78 	}

    79 	if (addressSize)

    80 		address &= 0xffff;

    81 	setCaretPos();

    82 	InvalidateRect(NULL, TRUE);

    83 }

    84 

    85 void MemoryViewer::setSize(int s)

    86 {

    87 	dataSize = s;

    88 	if (s == 0)

    89 		maxNibble = 1;

    90 	else if (s == 1)

    91 		maxNibble = 3;

    92 	else

    93 		maxNibble = 7;

    94 

    95 	InvalidateRect(NULL, TRUE);

    96 }

    97 

    98 void MemoryViewer::setDecimal(bool decimalDisplayMode)

    99 {

   100 	decimalDisplay = decimalDisplayMode;

   101 	InvalidateRect(NULL, TRUE);

   102 }

   103 

   104 BOOL MemoryViewer::OnEraseBkgnd(CDC*pDC)

   105 {

   106 	return TRUE;

   107 }

   108 

   109 void MemoryViewer::updateScrollInfo(int lines)

   110 {

   111 	int        page = lines * 16;

   112 	SCROLLINFO si;

   113 	ZeroMemory(&si, sizeof(si));

   114 	si.cbSize = sizeof(si);

   115 	si.fMask  = SIF_PAGE | SIF_RANGE | SIF_DISABLENOSCROLL | SIF_POS;

   116 	si.nMin   = 0;

   117 	if (addressSize)

   118 	{

   119 		si.nMax  = 0x10000/page;

   120 		si.nPage = 1;

   121 	}

   122 	else

   123 	{

   124 		si.nMax  = 0xa000000 / page;

   125 		si.nPage = page;

   126 	}

   127 

   128 	si.nPos = address / page;

   129 	SetScrollInfo(SB_VERT,

   130 	              &si,

   131 	              TRUE);

   132 }

   133 

   134 void MemoryViewer::OnPaint()

   135 {

   136 	CPaintDC dc(this); // device context for painting

   137 

   138 	RECT rect;

   139 	GetClientRect(&rect);

   140 	int w = rect.right - rect.left;

   141 	int h = rect.bottom - rect.top - 6;

   142 

   143 	CDC memDC;

   144 	memDC.CreateCompatibleDC(&dc);

   145 	CBitmap bitmap, *pOldBitmap;

   146 	bitmap.CreateCompatibleBitmap(&dc, w, rect.bottom - rect.top);

   147 	pOldBitmap = memDC.SelectObject(&bitmap);

   148 

   149 	memDC.FillRect(&rect, CBrush::FromHandle((HBRUSH)GetStockObject(WHITE_BRUSH)));

   150 	memDC.DrawEdge(&rect, EDGE_ETCHED, BF_RECT);

   151 

   152 	CFont *oldFont = memDC.SelectObject(CFont::FromHandle(font));

   153 

   154 	fontSize = memDC.GetTextExtent("0", 1);

   155 

   156 	int lines = h / fontSize.cy;

   157 

   158 	displayedLines = lines;

   159 

   160 	updateScrollInfo(lines);

   161 

   162 	u32 addr = address;

   163 

   164 	memDC.SetTextColor(RGB(0, 0, 0));

   165 

   166 	u8 data[32];

   167 

   168 	RECT r;

   169 	r.top    = 3;

   170 	r.left   = 3;

   171 	r.bottom = r.top+fontSize.cy;

   172 	r.right  = rect.right-3;

   173 

   174 	int line = 0;

   175 

   176 	for (int i = 0; i < lines; i++)

   177 	{

   178 		CString buffer;

   179 		if (addressSize)

   180 			buffer.Format("%04X", addr);

   181 		else

   182 			buffer.Format("%08X", addr);

   183 		memDC.DrawText(buffer, &r, DT_TOP | DT_LEFT | DT_NOPREFIX);

   184 		r.left  += 10*fontSize.cx;

   185 		beginHex = r.left;

   186 		readData(addr, 16, data);

   187 

   188 		int j;

   189 

   190 		if (dataSize == 0)

   191 		{

   192 			for (j = 0; j < 16; j++)

   193 			{

   194 				const int nextRLeft = r.left + 3*fontSize.cx;

   195 				if (!decimalDisplay)

   196 					buffer.Format("%02X", data[j]);

   197 				else

   198 				{

   199 					const signed char num = data[j];

   200 					if (num < -9 || num > 99)

   201 						r.left -= fontSize.cx;

   202 					if (num >= -99 && num <= 99)

   203 						buffer.Format("%2d", num);

   204 					else

   205 						buffer.Format("");

   206 				}

   207 				memDC.DrawText(buffer, &r, DT_TOP | DT_LEFT | DT_NOPREFIX);

   208 				r.left = nextRLeft;

   209 			}

   210 		}

   211 		if (dataSize == 1)

   212 		{

   213 			for (j = 0; j < 16; j += 2)

   214 			{

   215 				const int nextRLeft = r.left + 5*fontSize.cx;

   216 				if (!decimalDisplay)

   217 					buffer.Format("%04X", data[j] | data[j+1]<<8);

   218 				else

   219 				{

   220 					const signed short num = data[j] | data[j+1]<<8;

   221 					if (num < -999 || num > 9999)

   222 						r.left -= fontSize.cx;

   223 					if (num >= -9999 && num <= 9999)

   224 						buffer.Format("%4d", num);

   225 					else

   226 						buffer.Format("");

   227 				}

   228 				memDC.DrawText(buffer, &r, DT_TOP | DT_LEFT | DT_NOPREFIX);

   229 				r.left = nextRLeft;

   230 			}

   231 		}

   232 		if (dataSize == 2)

   233 		{

   234 			for (j = 0; j < 16; j += 4)

   235 			{

   236 				if (!decimalDisplay)

   237 					buffer.Format("%08X", data[j] | data[j+1]<<8 | data[j+2] << 16 | data[j+3] << 24);

   238 				else

   239 				{

   240 					const signed long num = data[j] | data[j+1]<<8 | data[j+2] << 16 | data[j+3] << 24;

   241 					if (num >= -9999999 && num <= 99999999)

   242 						buffer.Format("%8d", num);

   243 					else

   244 						buffer.Format("");

   245 				}

   246 				memDC.DrawText(buffer, &r, DT_TOP | DT_LEFT | DT_NOPREFIX);

   247 				r.left += 9*fontSize.cx;

   248 			}

   249 		}

   250 

   251 		line = r.left;

   252 

   253 		r.left    += fontSize.cx;

   254 		beginAscii = r.left;

   255 		buffer.Empty();

   256 		for (j = 0; j < 16; j++)

   257 		{

   258 			char c = data[j];

   259 			if (c >= 32 && c <= 127)

   260 			{

   261 				buffer += c;

   262 			}

   263 			else

   264 				buffer += '.';

   265 		}

   266 

   267 		memDC.DrawText(buffer, &r, DT_TOP | DT_LEFT | DT_NOPREFIX);

   268 		addr += 16;

   269 		if (addressSize)

   270 			addr &= 0xffff;

   271 		r.top    += fontSize.cy;

   272 		r.bottom += fontSize.cy;

   273 		r.left    = 3;

   274 	}

   275 	CPen pen;

   276 	pen.CreatePen(PS_SOLID, 1, RGB(0, 0, 0));

   277 	CPen *old = memDC.SelectObject(&pen);

   278 

   279 	memDC.MoveTo(3+fontSize.cx*9, 3);

   280 	memDC.LineTo(3+fontSize.cx*9, 3+displayedLines*fontSize.cy);

   281 

   282 	memDC.MoveTo(line, 3);

   283 	memDC.LineTo(line, 3+displayedLines*fontSize.cy);

   284 

   285 	memDC.SelectObject(old);

   286 	pen.DeleteObject();

   287 

   288 	memDC.SelectObject(oldFont);

   289 

   290 	dc.BitBlt(0, 0, w, rect.bottom - rect.top, &memDC, 0, 0, SRCCOPY);

   291 

   292 	memDC.SelectObject(pOldBitmap);

   293 	memDC.DeleteDC();

   294 	bitmap.DeleteObject();

   295 }

   296 

   297 void MemoryViewer::OnVScroll(UINT nSBCode, UINT nPos, CScrollBar*pScrollBar)

   298 {

   299 	int address = this->address;

   300 	switch (nSBCode)

   301 	{

   302 	case SB_BOTTOM:

   303 		address = 0xffffff00;

   304 		break;

   305 	case SB_LINEDOWN:

   306 		address += 0x10;

   307 		break;

   308 	case SB_LINEUP:

   309 		address -= 0x10;

   310 		break;

   311 	case SB_PAGEDOWN:

   312 		address += (displayedLines<<4);

   313 		break;

   314 	case SB_PAGEUP:

   315 		address -= (displayedLines<<4);

   316 		break;

   317 	case SB_TOP:

   318 		address = 0;

   319 		break;

   320 	case SB_THUMBTRACK:

   321 	{

   322 		int        page = displayedLines * 16;

   323 		SCROLLINFO si;

   324 		ZeroMemory(&si, sizeof(si));

   325 		si.cbSize = sizeof(si);

   326 		si.fMask  = SIF_TRACKPOS;

   327 		GetScrollInfo(SB_VERT, &si);

   328 		address = page * si.nTrackPos;

   329 		break;

   330 	}

   331 	}

   332 	setAddress(address);

   333 }

   334 

   335 UINT MemoryViewer::OnGetDlgCode()

   336 {

   337 	return DLGC_WANTALLKEYS;

   338 }

   339 

   340 void MemoryViewer::createEditCaret(int w, int h)

   341 {

   342 	if (!hasCaret || caretWidth != w || caretHeight != h)

   343 	{

   344 		hasCaret    = true;

   345 		caretWidth  = w;

   346 		caretHeight = h;

   347 		::CreateCaret(m_hWnd, (HBITMAP)0, w, h);

   348 	}

   349 }

   350 

   351 void MemoryViewer::destroyEditCaret()

   352 {

   353 	hasCaret = false;

   354 	DestroyCaret();

   355 }

   356 

   357 void MemoryViewer::setCaretPos()

   358 {

   359 	if (GetFocus() != this)

   360 	{

   361 		destroyEditCaret();

   362 		return;

   363 	}

   364 

   365 	if (dlg)

   366 		dlg->setCurrentAddress(editAddress);

   367 

   368 	if (editAddress < address || editAddress > (address -1 + (displayedLines<<4)))

   369 	{

   370 		destroyEditCaret();

   371 		return;

   372 	}

   373 

   374 	int subAddress = (editAddress - address);

   375 

   376 	int x = 3+10*fontSize.cx+editNibble*fontSize.cx;

   377 	int y = 3+fontSize.cy*((editAddress-address)>>4);

   378 

   379 	if (editAscii)

   380 	{

   381 		x = beginAscii + fontSize.cx*(subAddress&15);

   382 	}

   383 	else

   384 	{

   385 		switch (dataSize)

   386 		{

   387 		case 0:

   388 			x += 3*fontSize.cx*(subAddress & 15);

   389 			break;

   390 		case 1:

   391 			x += 5*fontSize.cx*((subAddress>>1) & 7);

   392 			break;

   393 		case 2:

   394 			x += 9*fontSize.cx*((subAddress>>2) & 3);

   395 			break;

   396 		}

   397 	}

   398 

   399 	RECT r;

   400 	GetClientRect(&r);

   401 	r.right -= 3;

   402 	if (x >= r.right)

   403 	{

   404 		destroyEditCaret();

   405 		return;

   406 	}

   407 	int w = fontSize.cx;

   408 	if ((x+fontSize.cx) >= r.right)

   409 		w = r.right - x;

   410 	createEditCaret(w, fontSize.cy);

   411 	::SetCaretPos(x, y);

   412 	ShowCaret();

   413 }

   414 

   415 void MemoryViewer::OnLButtonDown(UINT nFlags, CPoint point)

   416 {

   417 	int x           = point.x;

   418 	int y           = point.y;

   419 	int line        = (y-3)/fontSize.cy;

   420 	int beforeAscii = beginHex;

   421 	int inc         = 1;

   422 	int sub         = 3*fontSize.cx;

   423 	switch (dataSize)

   424 	{

   425 	case 0:

   426 		beforeAscii += 47*fontSize.cx;

   427 		break;

   428 	case 1:

   429 		beforeAscii += 39*fontSize.cx;

   430 		inc          = 2;

   431 		sub          = 5*fontSize.cx;

   432 		break;

   433 	case 2:

   434 		beforeAscii += 35*fontSize.cx;

   435 		inc          = 4;

   436 		sub          = 9*fontSize.cx;

   437 		break;

   438 	}

   439 

   440 	editAddress = address + (line<<4);

   441 	if (x >= beginHex && x < beforeAscii)

   442 	{

   443 		x -= beginHex;

   444 		editNibble = 0;

   445 		while (x > 0)

   446 		{

   447 			x -= sub;

   448 			if (x >= 0)

   449 				editAddress += inc;

   450 			else

   451 			{

   452 				editNibble = (x + sub)/fontSize.cx;

   453 			}

   454 		}

   455 		editAscii = false;

   456 	}

   457 	else if (x >= beginAscii)

   458 	{

   459 		int afterAscii = beginAscii+16*fontSize.cx;

   460 		if (x >= afterAscii)

   461 			x = afterAscii-1;

   462 		editAddress += (x-beginAscii)/fontSize.cx;

   463 		editNibble   = 0;

   464 		editAscii    = true;

   465 	}

   466 	else

   467 	{

   468 		return;

   469 	}

   470 

   471 	if (editNibble > maxNibble)

   472 		editNibble = maxNibble;

   473 	SetFocus();

   474 	setCaretPos();

   475 }

   476 

   477 void MemoryViewer::OnSetFocus(CWnd*pOldWnd)

   478 {

   479 	setCaretPos();

   480 	InvalidateRect(NULL, TRUE);

   481 }

   482 

   483 void MemoryViewer::OnKillFocus(CWnd*pNewWnd)

   484 {

   485 	destroyEditCaret();

   486 	InvalidateRect(NULL, TRUE);

   487 }

   488 

   489 void MemoryViewer::OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags)

   490 {

   491 	bool isShift = (GetKeyState(VK_SHIFT) & 0x80000000) == 0x80000000;

   492 

   493 	switch (nChar)

   494 	{

   495 	case VK_RIGHT:

   496 		if (editAscii)

   497 			moveAddress(1, 0);

   498 		else if (isShift)

   499 			moveAddress((maxNibble+1)>>1, 0);

   500 		else

   501 			moveAddress(0, 1);

   502 		break;

   503 	case VK_LEFT:

   504 		if (editAscii)

   505 			moveAddress(-1, 0);

   506 		else if (isShift)

   507 			moveAddress(-((maxNibble+1)>>1), 0);

   508 		else

   509 			moveAddress(0, -1);

   510 		break;

   511 	case VK_DOWN:

   512 		moveAddress(16, 0);

   513 		break;

   514 	case VK_UP:

   515 		moveAddress(-16, 0);

   516 		break;

   517 	case VK_TAB:

   518 		GetNextDlgTabItem(GetParent(), isShift)->SetFocus();

   519 		break;

   520 	}

   521 }

   522 

   523 void MemoryViewer::moveAddress(s32 offset, int nibbleOff)

   524 {

   525 	if (offset == 0)

   526 	{

   527 		if (nibbleOff == -1)

   528 		{

   529 			editNibble--;

   530 			if (editNibble == -1)

   531 			{

   532 				editAddress -= (maxNibble + 1) >> 1;

   533 				editNibble   = maxNibble;

   534 			}

   535 			if (address == 0 && (editAddress >= (u32)(displayedLines<<4)))

   536 			{

   537 				editAddress = 0;

   538 				editNibble  = 0;

   539 				beep();

   540 			}

   541 			if (editAddress < address)

   542 				setAddress(address - 16);

   543 		}

   544 		else

   545 		{

   546 			editNibble++;

   547 			if (editNibble > maxNibble)

   548 			{

   549 				editNibble   = 0;

   550 				editAddress += (maxNibble + 1) >> 1;

   551 			}

   552 			if (editAddress < address)

   553 			{

   554 				editAddress -= (maxNibble + 1) >> 1;

   555 				editNibble   = maxNibble;

   556 				beep();

   557 			}

   558 			if (editAddress >= (address+(displayedLines<<4)))

   559 				setAddress(address+16);

   560 		}

   561 	}

   562 	else

   563 	{

   564 		editAddress += offset;

   565 		if (offset < 0 && editAddress > (address-1+(displayedLines<<4)))

   566 		{

   567 			editAddress -= offset;

   568 			beep();

   569 			return;

   570 		}

   571 		if (offset > 0 && (editAddress < address))

   572 		{

   573 			editAddress -= offset;

   574 			beep();

   575 			return;

   576 		}

   577 		if (editAddress < address)

   578 		{

   579 			if (offset & 15)

   580 				setAddress((address+offset-16) & ~15);

   581 			else

   582 				setAddress(address+offset);

   583 		}

   584 		else if (editAddress > (address - 1 + (displayedLines<<4)))

   585 		{

   586 			if (offset & 15)

   587 				setAddress((address+offset+16) & ~15);

   588 			else

   589 				setAddress(address+offset);

   590 		}

   591 	}

   592 

   593 	setCaretPos();

   594 }

   595 

   596 LRESULT MemoryViewer::OnWMChar(WPARAM wParam, LPARAM LPARAM)

   597 {

   598 	if (OnEditInput(wParam))

   599 		return 0;

   600 	return 1;

   601 }

   602 

   603 bool MemoryViewer::OnEditInput(UINT c)

   604 {

   605 	if (c > 255 || !emulating)

   606 	{

   607 		beep();

   608 		return false;

   609 	}

   610 

   611 	if (!editAscii)

   612 		c = tolower(c);

   613 

   614 	u32 value = 256;

   615 

   616 	if (c >= 'a' && c <= 'f')

   617 		value = 10 + (c - 'a');

   618 	else if (c >= '0' && c <= '9')

   619 		value = (c - '0');

   620 	if (editAscii)

   621 	{

   622 		editData(editAddress, 8, 0, c);

   623 		moveAddress(1, 0);

   624 		InvalidateRect(NULL, TRUE);

   625 	}

   626 	else

   627 	{

   628 		if (value != 256)

   629 		{

   630 			value <<= 4*(maxNibble-editNibble);

   631 			u32 mask = ~(15 << 4*(maxNibble - editNibble));

   632 			switch (dataSize)

   633 			{

   634 			case 0:

   635 				editData(editAddress, 8, mask, value);

   636 				break;

   637 			case 1:

   638 				editData(editAddress, 16, mask, value);

   639 				break;

   640 			case 2:

   641 				editData(editAddress, 32, mask, value);

   642 				break;

   643 			}

   644 			moveAddress(0, 1);

   645 			InvalidateRect(NULL, TRUE);

   646 		}

   647 	}

   648 	return true;

   649 }

   650 

   651 void MemoryViewer::beep()

   652 {

   653 	MessageBeep((UINT)-1);

   654 }

   655 

   656 void MemoryViewer::registerClass()

   657 {

   658 	if (!isRegistered)

   659 	{

   660 		WNDCLASS wc;

   661 		ZeroMemory(&wc, sizeof(wc));

   662 		wc.style         = CS_PARENTDC | CS_HREDRAW | CS_VREDRAW | CS_GLOBALCLASS;

   663 		wc.lpfnWndProc   = (WNDPROC) ::DefWindowProc;

   664 		wc.hInstance     = AfxGetInstanceHandle();

   665 		wc.hCursor       = LoadCursor(NULL, IDC_ARROW);

   666 		wc.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);

   667 		wc.lpszMenuName  = NULL;

   668 		wc.lpszClassName = "VbaMemoryViewer";

   669 		AfxRegisterClass(&wc);

   670 		isRegistered = true;

   671 	}

   672 }

   673 

   674 void MemoryViewer::setAddressSize(int s)

   675 {

   676 	addressSize = s;

   677 }

   678 

   679 u32 MemoryViewer::getCurrentAddress()

   680 {

   681 	return editAddress;

   682 }

   683 

   684 int MemoryViewer::getSize()

   685 {

   686 	return dataSize;

   687 }

   688
author	Robert McIntyre <rlm@mit.edu>
date	Sat, 03 Mar 2012 10:35:58 -0600
parents	f9f4f1b99eed
children