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windows-nt/Source/XPSP1/NT/shell/comctl32/v6/editrare.c

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2020-09-26 03:20:57 -05:00
#include "ctlspriv.h"
#pragma hdrstop
#include "usrctl32.h"
#include "edit.h"
//---------------------------------------------------------------------------//
#define WS_EX_EDGEMASK (WS_EX_WINDOWEDGE | WS_EX_CLIENTEDGE)
#define GetCharABCWidthsAorW ((ped)->fAnsi ? GetCharABCWidthsA : GetCharABCWidthsW)
#define GetCharWidthAorW ((ped)->fAnsi ? GetCharWidthA : GetCharWidthW)
//---------------------------------------------------------------------------//
INT Edit_GetStateId(PED ped)
{
INT iStateId;
if (ped->fDisabled)
{
iStateId = ETS_DISABLED;
}
else if (ped->fReadOnly)
{
iStateId = ETS_READONLY;
}
else if (ped->fFocus)
{
iStateId = ETS_FOCUSED;
}
else if (ped->fHot)
{
iStateId = ETS_HOT;
}
else
{
iStateId = ETS_NORMAL;
}
return iStateId;
}
//---------------------------------------------------------------------------//
VOID Edit_SetMargin(PED ped, UINT wFlags, long lMarginValues, BOOL fRedraw)
{
BOOL fUseFontInfo = FALSE;
UINT wValue, wOldLeftMargin, wOldRightMargin;
if (wFlags & EC_LEFTMARGIN)
{
//
// Set the left margin
//
if ((int) (wValue = (int)(short)LOWORD(lMarginValues)) < 0)
{
fUseFontInfo = TRUE;
wValue = min((ped->aveCharWidth / 2), (int)ped->wMaxNegA);
}
ped->rcFmt.left += wValue - ped->wLeftMargin;
wOldLeftMargin = ped->wLeftMargin;
ped->wLeftMargin = wValue;
}
if (wFlags & EC_RIGHTMARGIN)
{
//
// Set the Right margin
//
if ((int) (wValue = (int)(short)HIWORD(lMarginValues)) < 0)
{
fUseFontInfo = TRUE;
wValue = min((ped->aveCharWidth / 2), (int)ped->wMaxNegC);
}
ped->rcFmt.right -= wValue - ped->wRightMargin;
wOldRightMargin = ped->wRightMargin;
ped->wRightMargin = wValue;
}
if (fUseFontInfo)
{
if (ped->rcFmt.right - ped->rcFmt.left < 2 * ped->aveCharWidth)
{
TraceMsg(TF_STANDARD, "EDIT: Edit_SetMargin: rcFmt is too narrow for EC_USEFONTINFO");
if (wFlags & EC_LEFTMARGIN)
{
//
// Reset the left margin
//
ped->rcFmt.left += wOldLeftMargin - ped->wLeftMargin;
ped->wLeftMargin = wOldLeftMargin;
}
if (wFlags & EC_RIGHTMARGIN)
{
//
// Reset the Right margin
//
ped->rcFmt.right -= wOldRightMargin - ped->wRightMargin;
ped->wRightMargin = wOldRightMargin;
}
return;
}
}
if (fRedraw)
{
Edit_InvalidateClient(ped, TRUE);
}
}
//---------------------------------------------------------------------------//
VOID Edit_CalcMarginForDBCSFont(PED ped, BOOL fRedraw)
{
if (ped->fTrueType)
{
if (!ped->fSingle)
{
//
// wMaxNegA came from ABC CharWidth.
//
if (ped->wMaxNegA != 0)
{
Edit_SetMargin(ped, EC_LEFTMARGIN | EC_RIGHTMARGIN,
MAKELONG(EC_USEFONTINFO, EC_USEFONTINFO),fRedraw);
}
}
else
{
int iMaxNegA = 0, iMaxNegC = 0;
int i;
PVOID lpBuffer;
LPABC lpABCBuff;
ABC ABCInfo;
HFONT hOldFont;
HDC hdc = GetDC(ped->hwnd);
if (!ped->hFont || !(hOldFont = SelectFont(hdc, ped->hFont)))
{
ReleaseDC(ped->hwnd, hdc);
return;
}
if (lpBuffer = UserLocalAlloc(0,sizeof(ABC) * 256))
{
lpABCBuff = lpBuffer;
GetCharABCWidthsAorW(hdc, 0, 255, lpABCBuff);
}
else
{
lpABCBuff = &ABCInfo;
GetCharABCWidthsAorW(hdc, 0, 0, lpABCBuff);
}
i = 0;
while (TRUE)
{
iMaxNegA = min(iMaxNegA, lpABCBuff->abcA);
iMaxNegC = min(iMaxNegC, lpABCBuff->abcC);
if (++i == 256)
{
break;
}
if (lpBuffer)
{
lpABCBuff++;
}
else
{
GetCharABCWidthsAorW(hdc, i, i, lpABCBuff);
}
}
SelectFont(hdc, hOldFont);
if (lpBuffer)
{
UserLocalFree(lpBuffer);
}
ReleaseDC(ped->hwnd, hdc);
if ((iMaxNegA != 0) || (iMaxNegC != 0))
{
Edit_SetMargin(ped, EC_LEFTMARGIN | EC_RIGHTMARGIN,
MAKELONG((UINT)(-iMaxNegC), (UINT)(-iMaxNegA)),fRedraw);
}
}
}
}
//---------------------------------------------------------------------------//
//
// GetCharDimensionsEx(HDC hDC, HFONT hfont, LPTEXTMETRIC lptm, LPINT lpcy)
//
// if an app set a font for vertical writing, even though we don't
// handle it with EC, the escapement of tm can be NON 0. Then cxWidth from
// GetCharDimenstions() could be 0 in GetCharDimensions().
// This will break our caller who don't expect 0 at return. So I created
// this entry for the case the caller set vertical font.
//
//
// PORTPORT: Duplicates functionality of GetCharDimensions() in prsht.c
int UserGetCharDimensionsEx(HDC hDC, HFONT hfont, LPTEXTMETRICW lptm, LPINT lpcy)
{
static CONST WCHAR AveCharWidthData[] = L"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
int cxWidth;
TEXTMETRICW tm;
LOGFONTW lf;
WCHAR wchFaceName[LF_FACESIZE];
//
// Is this font vertical font ??
//
wchFaceName[0] = 0;
GetTextFaceW(hDC, LF_FACESIZE, wchFaceName);
if (wchFaceName[0] != L'@')
{
//
// if not call GDI...
//
return(GdiGetCharDimensions(hDC, lptm, lpcy));
}
if (!lptm)
{
lptm = &tm;
}
GetTextMetricsW(hDC, lptm);
// TMPF_FIXED_PITCH
//
// If this bit is set the font is a variable pitch font.
// If this bit is clear the font is a fixed pitch font.
// Note very carefully that those meanings are the opposite of what the constant name implies.
//
if (!(lptm->tmPitchAndFamily & TMPF_FIXED_PITCH))
{
//
// This is fixed pitch font....
//
cxWidth = lptm->tmAveCharWidth;
}
else
{
//
// This is variable pitch font...
//
if (hfont && GetObjectW(hfont, sizeof(LOGFONTW), &lf) && (lf.lfEscapement != 0))
{
cxWidth = lptm->tmAveCharWidth;
}
else
{
SIZE size;
GetTextExtentPointW(hDC, AveCharWidthData, 52, &size);
cxWidth = ((size.cx / 26) + 1) / 2;
}
}
if (lpcy)
{
*lpcy = lptm->tmHeight;
}
return cxWidth;
}
//---------------------------------------------------------------------------//
//
// Edit_GetTextHandler AorW
//
// Copies at most maxCchToCopy chars to the buffer lpBuffer. Returns
// how many chars were actually copied. Null terminates the string based
// on the fNullTerminate flag:
// fNullTerminate --> at most (maxCchToCopy - 1) characters will be copied
// !fNullTerminate --> at most (maxCchToCopy) characters will be copied
//
ICH Edit_GetTextHandler(PED ped, ICH maxCchToCopy, LPSTR lpBuffer, BOOL fNullTerminate)
{
PSTR pText;
if (maxCchToCopy)
{
//
// Zero terminator takes the extra byte
//
if (fNullTerminate)
{
maxCchToCopy--;
}
maxCchToCopy = min(maxCchToCopy, ped->cch);
//
// Zero terminate the string
//
if (ped->fAnsi)
{
*(LPSTR)(lpBuffer + maxCchToCopy) = 0;
}
else
{
*(((LPWSTR)lpBuffer) + maxCchToCopy) = 0;
}
pText = Edit_Lock(ped);
RtlCopyMemory(lpBuffer, pText, maxCchToCopy*ped->cbChar);
Edit_Unlock(ped);
}
return maxCchToCopy;
}
//---------------------------------------------------------------------------//
BOOL Edit_NcCreate( PED ped, HWND hwnd, LPCREATESTRUCT lpCreateStruct)
{
BOOL fAnsi;
ULONG ulStyle;
ULONG ulStyleEx;
//
// Initialize the ped
//
ped->hwnd = hwnd;
ped->pww = (PWW)GetWindowLongPtr(hwnd, GWLP_WOWWORDS);
ulStyle = GET_STYLE(ped);
ulStyleEx = GET_EXSTYLE(ped);
//
// (phellyar) All strings sent to us via standard WM_* messages or
// control specific EM_* messages are expanded to unicode
// for us by user. Therefore we need worry about
// whether be are created by and ANSI app.
//
//fAnsi = TESTFLAG(GET_STATE(ped), WS_ST_ANSICREATOR);
fAnsi = 0;
ped->fEncoded = FALSE;
ped->iLockLevel = 0;
ped->chLines = NULL;
ped->pTabStops = NULL;
ped->charWidthBuffer = NULL;
ped->fAnsi = fAnsi ? 1 : 0; // Force TRUE to be 1 because its a 1 bit field
ped->cbChar = (WORD)(fAnsi ? sizeof(CHAR) : sizeof(WCHAR));
ped->hInstance = lpCreateStruct->hInstance;
// IME
ped->hImcPrev = NULL_HIMC;
{
DWORD dwVer = UserGetVersion();
ped->fWin31Compat = Is310Compat(dwVer);
ped->f40Compat = Is400Compat(dwVer);
}
//
// NOTE:
// The order of the following two checks is important. People can
// create edit fields with a 3D and a normal border, and we don't
// want to disallow that. But we need to detect the "no 3D border"
// border case too.
//
if ( ulStyleEx & WS_EX_EDGEMASK )
{
ped->fBorder = TRUE;
}
else if ( ulStyle & WS_BORDER )
{
ClearWindowState(hwnd, WS_BORDER);
ped->fFlatBorder = TRUE;
ped->fBorder = TRUE;
}
if ( !(ulStyle & ES_MULTILINE) )
{
ped->fSingle = TRUE;
}
if ( ulStyle & WS_DISABLED )
{
ped->fDisabled = TRUE;
}
if ( ulStyle & ES_READONLY)
{
if (!ped->fWin31Compat)
{
//
// BACKWARD COMPATIBILITY HACK
//
// "MileStone" unknowingly sets the ES_READONLY style. So, we strip this
// style here for all Win3.0 apps (this style is new for Win3.1).
// Fix for Bug #12982 -- SANKAR -- 01/24/92 --
//
ClearWindowState(hwnd, ES_READONLY);
}
else
{
ped->fReadOnly = TRUE;
}
}
//
// Allocate storage for the text for the edit controls. Storage for single
// line edit controls will always get allocated in the local data segment.
// Multiline will allocate in the local ds but the app may free this and
// allocate storage elsewhere...
//
ped->hText = LocalAlloc(LHND, CCHALLOCEXTRA*ped->cbChar);
if (!ped->hText)
{
return FALSE;
}
ped->cchAlloc = CCHALLOCEXTRA;
ped->lineHeight = 1;
ped->hwndParent = lpCreateStruct->hwndParent;
ped->hTheme = OpenThemeData(ped->hwnd, L"Edit");
ped->wImeStatus = 0;
return (BOOL)DefWindowProc(hwnd, WM_NCCREATE, 0, (LPARAM)lpCreateStruct);
}
//---------------------------------------------------------------------------//
BOOL Edit_Create(PED ped, LONG windowStyle)
{
HDC hdc;
//
// Get values from the window instance data structure and put
// them in the ped so that we can access them easier.
//
if ( windowStyle & ES_AUTOHSCROLL )
{
ped->fAutoHScroll = 1;
}
if ( windowStyle & ES_NOHIDESEL )
{
ped->fNoHideSel = 1;
}
ped->format = (LOWORD(windowStyle) & LOWORD(ES_FMTMASK));
if ((windowStyle & ES_RIGHT) && !ped->format)
{
ped->format = ES_RIGHT;
}
//
// Max # chars we will initially allow
//
ped->cchTextMax = MAXTEXT;
//
// Set up undo initial conditions... (ie. nothing to undo)
//
ped->ichDeleted = (ICH)-1;
ped->ichInsStart = (ICH)-1;
ped->ichInsEnd = (ICH)-1;
//
// initial charset value - need to do this BEFORE EditML_Create is called
// so that we know not to fool with scrollbars if nessacary
//
hdc = Edit_GetDC(ped, TRUE);
ped->charSet = (BYTE)GetTextCharset(hdc);
Edit_ReleaseDC(ped, hdc, TRUE);
//
// FE_IME
// EC_INSERT_COMPOSITION_CHARACTER: Edit_Create() - call Edit_InitInsert()
//
Edit_InitInsert(ped, GetKeyboardLayout(0));
if( g_pLpkEditCallout )
{
ped->pLpkEditCallout = g_pLpkEditCallout;
}
else
{
ped->pLpkEditCallout = NULL;
}
return ped->pLpkEditCallout ? ped->pLpkEditCallout->EditCreate((PED0)ped, ped->hwnd) : TRUE;
}
//---------------------------------------------------------------------------//
//
// Do this once at process startup. The edit control has special
// callouts in lpk.dll to help it render complex script languages
// such as Arabic. The registry probing alg executed here is the same
// as the one performed in win32k!InitializeGre.
//
// We then call GetModuleHandle rather than LoadLibrary, since lpk.dll
// will be guaranteed to be loaded and initialized already by gdi32. This
// fixes the scenario in which the user turns on complex scripts but
// doesn't reboot, which caused us to try and load lpk without it having
// been initialized on the kernel side.
//
VOID InitEditLpk()
{
LONG lError;
HKEY hKey;
lError = RegOpenKeyEx(HKEY_LOCAL_MACHINE,
TEXT("Software\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack"),
0,
KEY_QUERY_VALUE,
&hKey);
if (lError == ERROR_SUCCESS)
{
HANDLE hLpk;
DWORD dwLpkShapingDlls;
DWORD dwIndex;
TCHAR szTemp[256];
DWORD dwTempSize;
DWORD dwValueType;
DWORD dwValue;
DWORD dwValueSize;
dwLpkShapingDlls = 0;
dwIndex = 0;
do
{
dwTempSize = ARRAYSIZE(szTemp);
dwValueSize = SIZEOF(DWORD);
lError = RegEnumValue(hKey,
dwIndex++,
szTemp,
&dwTempSize,
NULL,
&dwValueType,
(LPVOID)&dwValue,
&dwValueSize);
if ((lError == ERROR_SUCCESS) && (dwValueType == REG_DWORD))
{
dwLpkShapingDlls |= 1 << dwValue;
}
}
while (lError != ERROR_NO_MORE_ITEMS);
if (dwLpkShapingDlls != 0)
{
hLpk = GetModuleHandle(TEXT("LPK"));
if (hLpk != NULL)
{
g_pLpkEditCallout = (PLPKEDITCALLOUT)GetProcAddress(hLpk, "LpkEditControl");
if (g_pLpkEditCallout == NULL)
{
FreeLibrary(hLpk);
}
}
}
RegCloseKey(hKey);
}
}
//---------------------------------------------------------------------------//
//
// Destroys the edit control ped by freeing up all memory used by it.
//
VOID Edit_NcDestroyHandler(HWND hwnd, PED ped)
{
//
// ped could be NULL if WM_NCCREATE failed to create it...
//
if (ped)
{
//
// Free the text buffer (always present?)
//
LocalFree(ped->hText);
//
// Free up undo buffer and line start array (if present)
//
if (ped->hDeletedText != NULL)
{
GlobalFree(ped->hDeletedText);
}
//
// Free tab stop buffer (if present)
//
if (ped->pTabStops)
{
UserLocalFree(ped->pTabStops);
}
//
// Free line start array (if present)
//
if (ped->chLines)
{
UserLocalFree(ped->chLines);
}
//
// Free the character width buffer (if present)
//
if (ped->charWidthBuffer)
{
UserLocalFree(ped->charWidthBuffer);
}
//
// Free the cursor bitmap
//
if (ped->pLpkEditCallout && ped->hCaretBitmap)
{
DeleteObject(ped->hCaretBitmap);
}
//
// Free the cached font handle
//
if ( ped->hFontSave )
{
DeleteObject(ped->hFontSave);
}
//
// Close an open theme handle
//
if ( ped->hTheme )
{
CloseThemeData(ped->hTheme);
}
//
// Free the memory used by CueBannerText
//
Str_SetPtr(&(ped->pszCueBannerText), NULL);
//
// free the allocated password font
//
if ( ped->hFontPassword )
{
DeleteObject(ped->hFontPassword);
}
//
// Last but not least, free the ped
//
UserLocalFree(ped);
}
TraceMsg(TF_STANDARD, "EDIT: Clearing edit instance pointer.");
Edit_SetPtr(hwnd, NULL);
// If we're part of a combo box, let it know we're gone
#if 0 // PORTPORT: Expose fnid field in WND struct.
pwndParent = REBASEPWND(pwnd, spwndParent);
if (pwndParent && GETFNID(pwndParent) == FNID_COMBOBOX) {
ComboBoxWndProcWorker(pwndParent, WM_PARENTNOTIFY,
MAKELONG(WM_DESTROY, PTR_TO_ID(pwnd->spmenu)), (LPARAM)HWq(pwnd), FALSE);
}
#endif
}
//---------------------------------------------------------------------------//
//
// Edit_SetPasswordCharHandler AorW
//
// Sets the password char to display.
//
VOID Edit_SetPasswordCharHandler(PED ped, UINT pwchar)
{
HDC hdc;
SIZE size = {0};
ped->charPasswordChar = pwchar;
if (pwchar)
{
hdc = Edit_GetDC(ped, TRUE);
if (ped->fAnsi)
{
GetTextExtentPointA(hdc, (LPSTR)&pwchar, 1, &size);
}
else
{
GetTextExtentPointW(hdc, (LPWSTR)&pwchar, 1, &size);
}
GetTextExtentPointW(hdc, (LPWSTR)&pwchar, 1, &size);
ped->cPasswordCharWidth = max(size.cx, 1);
Edit_ReleaseDC(ped, hdc, TRUE);
}
if (pwchar)
{
SetWindowState(ped->hwnd, ES_PASSWORD);
}
else
{
ClearWindowState(ped->hwnd, ES_PASSWORD);
}
if ( g_fIMMEnabled )
{
Edit_EnableDisableIME(ped);
}
}
//---------------------------------------------------------------------------//
//
// GetNegABCwidthInfo()
//
// This function fills up the ped->charWidthBuffer buffer with the
// negative A,B and C widths for all the characters below 0x7f in the
// currently selected font.
//
// Returns:
// TRUE, if the function succeeded.
// FALSE, if GDI calls to get the char widths have failed.
//
// Note: not used if LPK installed
//
BOOL GetNegABCwidthInfo(PED ped, HDC hdc)
{
LPABC lpABCbuff;
int i;
int CharWidthBuff[CHAR_WIDTH_BUFFER_LENGTH]; // Local char width buffer.
int iOverhang;
if (!GetCharABCWidthsA(hdc, 0, CHAR_WIDTH_BUFFER_LENGTH-1, (LPABC)ped->charWidthBuffer))
{
TraceMsg(TF_STANDARD, "UxEdit: GetNegABCwidthInfo: GetCharABCWidthsA Failed");
return FALSE;
}
//
// The (A+B+C) returned for some fonts (eg: Lucida Caligraphy) does not
// equal the actual advanced width returned by GetCharWidths() minus overhang.
// This is due to font bugs. So, we adjust the 'B' width so that this
// discrepancy is removed.
// Fix for Bug #2932 --sankar-- 02/17/93
//
iOverhang = ped->charOverhang;
GetCharWidthA(hdc, 0, CHAR_WIDTH_BUFFER_LENGTH-1, (LPINT)CharWidthBuff);
lpABCbuff = (LPABC)ped->charWidthBuffer;
for(i = 0; i < CHAR_WIDTH_BUFFER_LENGTH; i++)
{
lpABCbuff->abcB = CharWidthBuff[i] - iOverhang
- lpABCbuff->abcA
- lpABCbuff->abcC;
lpABCbuff++;
}
return TRUE;
}
//---------------------------------------------------------------------------//
//
// Edit_Size() -
//
// Handle sizing for an edit control's client rectangle.
// Use lprc as the bounding rectangle if specified; otherwise use the current
// client rectangle.
//
VOID Edit_Size(PED ped, LPRECT lprc, BOOL fRedraw)
{
RECT rc;
//
// BiDi VB32 Creates an Edit Control and immediately sends a WM_SIZE
// message which causes EXSize to be called before Edit_SetFont, which
// in turn causes a divide by zero exception below. This check for
// ped->lineHeight will pick it up safely. [samera] 3/5/97
//
if(ped->lineHeight == 0)
{
return;
}
//
// assume that we won't be able to display the caret
//
ped->fCaretHidden = TRUE;
if ( lprc )
{
CopyRect(&rc, lprc);
}
else
{
GetClientRect(ped->hwnd, &rc);
}
if (!(rc.right - rc.left) || !(rc.bottom - rc.top))
{
if (ped->rcFmt.right - ped->rcFmt.left)
{
return;
}
rc.left = 0;
rc.top = 0;
rc.right = ped->aveCharWidth * 10;
rc.bottom = ped->lineHeight;
}
if (!lprc)
{
//
// subtract the margins from the given rectangle --
// make sure that this rectangle is big enough to have these margins.
//
if ((rc.right - rc.left) > (int)(ped->wLeftMargin + ped->wRightMargin))
{
rc.left += ped->wLeftMargin;
rc.right -= ped->wRightMargin;
}
}
//
// Leave space so text doesn't touch borders.
// For 3.1 compatibility, don't subtract out vertical borders unless
// there is room.
//
if (ped->fBorder)
{
INT cxBorder = GetSystemMetrics(SM_CXBORDER);
INT cyBorder = GetSystemMetrics(SM_CYBORDER);
if (ped->fFlatBorder)
{
cxBorder *= 2;
cyBorder *= 2;
}
if (rc.bottom < rc.top + ped->lineHeight + 2*cyBorder)
{
cyBorder = 0;
}
InflateRect(&rc, -cxBorder, -cyBorder);
}
//
// Is the resulting rectangle too small? Don't change it then.
//
if ((!ped->fSingle) && ((rc.right - rc.left < (int) ped->aveCharWidth) ||
((rc.bottom - rc.top) / ped->lineHeight == 0)))
{
return;
}
//
// now, we know we're safe to display the caret
//
ped->fCaretHidden = FALSE;
CopyRect(&ped->rcFmt, &rc);
if (ped->fSingle)
{
ped->rcFmt.bottom = min(rc.bottom, rc.top + ped->lineHeight);
}
else
{
EditML_Size(ped, fRedraw);
}
if (fRedraw)
{
InvalidateRect(ped->hwnd, NULL, TRUE);
}
//
// FE_IME
// Edit_Size() - call Edit_ImmSetCompositionWindow()
//
// normally this isn't needed because WM_SIZE will cause
// WM_PAINT and the paint handler will take care of IME
// composition window. However when the edit window is
// restored from maximized window and client area is out
// of screen, the window will not be redrawn.
//
if (ped->fFocus && g_fIMMEnabled && ImmIsIME(GetKeyboardLayout(0)))
{
POINT pt;
GetCaretPos(&pt);
Edit_ImmSetCompositionWindow(ped, pt.x, pt.y);
}
}
//---------------------------------------------------------------------------//
//
// Edit_SetFont AorW
//
// Sets the font used in the edit control. Warning: Memory compaction may
// occur if the font wasn't previously loaded. If the font handle passed
// in is NULL, assume the system font.
//
BOOL Edit_SetFont(PED ped, HFONT hfont, BOOL fRedraw)
{
TEXTMETRICW TextMetrics = {0};
HDC hdc;
HFONT hOldFont=NULL;
DWORD dwMaxOverlapChars;
CHWIDTHINFO cwi;
UINT uExtracharPos;
BOOL fRet = FALSE;
hdc = GetDC(ped->hwnd);
if (hdc)
{
#ifdef _USE_DRAW_THEME_TEXT_
if (hfont)
{
ped->hFontSave = hfont;
}
if ( ped->hTheme )
{
//
// use the theme font if we're themed
//
HRESULT hr;
LOGFONT lf;
hr = GetThemeFont(ped->hTheme, hdc, EP_EDITTEXT, 0, TMT_FONT, &lf);
if ( SUCCEEDED(hr) )
{
hfont = CreateFontIndirect(&lf);
}
}
#endif // _USE_DRAW_THEME_TEXT_
ped->hFont = hfont;
if (ped->hFont)
{
//
// Since the default font is the system font, no need to select it in
// if that's what the user wants.
//
hOldFont = SelectObject(hdc, hfont);
if (!hOldFont)
{
hfont = ped->hFont = NULL;
}
//
// Get the metrics and ave char width for the currently selected font
//
//
// Call Vertical font-aware AveWidth compute function...
//
// FE_SB
ped->aveCharWidth = UserGetCharDimensionsEx(hdc, hfont, &TextMetrics, &ped->lineHeight);
//
// This might fail when people uses network fonts (or bad fonts).
//
if (ped->aveCharWidth == 0)
{
TraceMsg(TF_STANDARD, "EDIT: Edit_SetFont: GdiGetCharDimensions failed");
if (hOldFont != NULL)
{
SelectObject(hdc, hOldFont);
}
//
// We've messed up the ped so let's reset the font.
// Note that we won't recurse more than once because we'll
// pass hfont == NULL.
// Too bad WM_SETFONT doesn't return a value.
//
return Edit_SetFont(ped, NULL, fRedraw);
}
}
else
{
ped->aveCharWidth = UserGetCharDimensionsEx(hdc, hfont, &TextMetrics, &ped->lineHeight);
// We should always be able to get the dimensions of the system font. Just in case
// set these guys to known system font constants
if ( ped->aveCharWidth == 0 )
{
ped->aveCharWidth = SYSFONT_CXCHAR;
ped->lineHeight = SYSFONT_CYCHAR;
}
}
ped->charOverhang = TextMetrics.tmOverhang;
//
// assume that they don't have any negative widths at all.
//
ped->wMaxNegA = ped->wMaxNegC = ped->wMaxNegAcharPos = ped->wMaxNegCcharPos = 0;
//
// Check if Proportional Width Font
//
// NOTE: as SDK doc says about TEXTMETRIC:
// TMPF_FIXED_PITCH
// If this bit is set the font is a variable pitch font. If this bit is clear
// the font is a fixed pitch font. Note very carefully that those meanings are
// the opposite of what the constant name implies.
//
// Thus we have to reverse the value using logical not (fNonPropFont has 1 bit width)
//
ped->fNonPropFont = !(TextMetrics.tmPitchAndFamily & FIXED_PITCH);
//
// Check for a TrueType font
// Older app OZWIN chokes if we allocate a bigger buffer for TrueType fonts
// So, for apps older than 4.0, no special treatment for TrueType fonts.
//
if (ped->f40Compat && (TextMetrics.tmPitchAndFamily & TMPF_TRUETYPE))
{
ped->fTrueType = GetCharWidthInfo(hdc, &cwi);
#if DBG
if (!ped->fTrueType)
{
TraceMsg(TF_STANDARD, "EDIT: Edit_SetFont: GetCharWidthInfo Failed");
}
#endif
}
else
{
ped->fTrueType = FALSE;
}
// FE_SB
//
// In DBCS Windows, Edit Control must handle Double Byte Character
// if tmCharSet field of textmetrics is double byte character set
// such as SHIFTJIS_CHARSET(128:Japan), HANGEUL_CHARSET(129:Korea).
//
// We call Edit_GetDBCSVector even when fAnsi is false so that we could
// treat ped->fAnsi and ped->fDBCS indivisually. I changed Edit_GetDBCSVector
// function so that it returns 0 or 1, because I would like to set ped->fDBCS
// bit field here.
//
ped->fDBCS = Edit_GetDBCSVector(ped,hdc,TextMetrics.tmCharSet);
ped->charSet = TextMetrics.tmCharSet;
if (ped->fDBCS)
{
//
// Free the character width buffer if ped->fDBCS.
//
// I expect single GetTextExtentPoint call is faster than multiple
// GetTextExtentPoint call (because the graphic engine has a cache buffer).
// See editec.c/ECTabTheTextOut().
//
if (ped->charWidthBuffer)
{
LocalFree(ped->charWidthBuffer);
ped->charWidthBuffer = NULL;
}
//
// if FullWidthChar : HalfWidthChar == 2 : 1....
//
// TextMetrics.tmMaxCharWidth = FullWidthChar width
// ped->aveCharWidth = HalfWidthChar width
//
if (ped->fNonPropFont &&
((ped->aveCharWidth * 2) == TextMetrics.tmMaxCharWidth))
{
ped->fNonPropDBCS = TRUE;
}
else
{
ped->fNonPropDBCS = FALSE;
}
}
else
{
//
// Since the font has changed, let us obtain and save the character width
// info for this font.
//
// First left us find out if the maximum chars that can overlap due to
// negative widths. Since we can't access USER globals, we make a call here.
//
if (!(ped->fSingle || ped->pLpkEditCallout))
{
//
// Is this a multiline edit control with no LPK present?
//
UINT wBuffSize;
LPINT lpCharWidthBuff;
SHORT i;
//
// For multiline edit controls, we maintain a buffer that contains
// the character width information.
//
wBuffSize = (ped->fTrueType) ? (CHAR_WIDTH_BUFFER_LENGTH * sizeof(ABC)) :
(CHAR_WIDTH_BUFFER_LENGTH * sizeof(int));
if (ped->charWidthBuffer)
{
//
// If buffer already present
//
lpCharWidthBuff = ped->charWidthBuffer;
ped->charWidthBuffer = UserLocalReAlloc(lpCharWidthBuff, wBuffSize, HEAP_ZERO_MEMORY);
if (ped->charWidthBuffer == NULL)
{
UserLocalFree((HANDLE)lpCharWidthBuff);
}
}
else
{
ped->charWidthBuffer = UserLocalAlloc(HEAP_ZERO_MEMORY, wBuffSize);
}
if (ped->charWidthBuffer != NULL)
{
if (ped->fTrueType)
{
ped->fTrueType = GetNegABCwidthInfo(ped, hdc);
}
//
// It is possible that the above attempts could have failed and reset
// the value of fTrueType. So, let us check that value again.
//
if (!ped->fTrueType)
{
if (!GetCharWidthA(hdc, 0, CHAR_WIDTH_BUFFER_LENGTH-1, ped->charWidthBuffer))
{
UserLocalFree((HANDLE)ped->charWidthBuffer);
ped->charWidthBuffer=NULL;
}
else
{
//
// We need to subtract out the overhang associated with
// each character since GetCharWidth includes it...
//
for (i=0;i < CHAR_WIDTH_BUFFER_LENGTH;i++)
{
ped->charWidthBuffer[i] -= ped->charOverhang;
}
}
}
}
}
}
{
//
// Calculate MaxNeg A C metrics
//
#if 0 // PORTPORT: How to get this info in user mode? And if we
// set it to zero what is the effect?
dwMaxOverlapChars = GetMaxOverlapChars();
#endif
dwMaxOverlapChars = 0;
if (ped->fTrueType)
{
if (cwi.lMaxNegA < 0)
{
ped->wMaxNegA = -cwi.lMaxNegA;
}
else
{
ped->wMaxNegA = 0;
}
if (cwi.lMaxNegC < 0)
{
ped->wMaxNegC = -cwi.lMaxNegC;
}
else
{
ped->wMaxNegC = 0;
}
if (cwi.lMinWidthD != 0)
{
ped->wMaxNegAcharPos = (ped->wMaxNegA + cwi.lMinWidthD - 1) / cwi.lMinWidthD;
ped->wMaxNegCcharPos = (ped->wMaxNegC + cwi.lMinWidthD - 1) / cwi.lMinWidthD;
if (ped->wMaxNegA + ped->wMaxNegC > (UINT)cwi.lMinWidthD)
{
uExtracharPos = (ped->wMaxNegA + ped->wMaxNegC - 1) / cwi.lMinWidthD;
ped->wMaxNegAcharPos += uExtracharPos;
ped->wMaxNegCcharPos += uExtracharPos;
}
}
else
{
ped->wMaxNegAcharPos = LOWORD(dwMaxOverlapChars); // Left
ped->wMaxNegCcharPos = HIWORD(dwMaxOverlapChars); // Right
}
}
else if (ped->charOverhang != 0)
{
//
// Some bitmaps fonts (i.e., italic) have under/overhangs;
// this is pretty much like having negative A and C widths.
//
ped->wMaxNegA = ped->wMaxNegC = ped->charOverhang;
ped->wMaxNegAcharPos = LOWORD(dwMaxOverlapChars); // Left
ped->wMaxNegCcharPos = HIWORD(dwMaxOverlapChars); // Right
}
}
if (!hfont)
{
//
// We are getting the stats for the system font so update the system
// font fields in the ed structure since we use these when calculating
// some spacing.
//
ped->cxSysCharWidth = ped->aveCharWidth;
ped->cySysCharHeight= ped->lineHeight;
}
else if (hOldFont)
{
SelectObject(hdc, hOldFont);
}
if (ped->fFocus)
{
UINT cxCaret;
SystemParametersInfo(SPI_GETCARETWIDTH, 0, (LPVOID)&cxCaret, 0);
//
// Update the caret.
//
HideCaret(ped->hwnd);
DestroyCaret();
if (ped->pLpkEditCallout)
{
ped->pLpkEditCallout->EditCreateCaret((PED0)ped, hdc, cxCaret, ped->lineHeight, 0);
}
else
{
CreateCaret(ped->hwnd, (HBITMAP)NULL, cxCaret, ped->lineHeight);
}
ShowCaret(ped->hwnd);
}
ReleaseDC(ped->hwnd, hdc);
//
// Update password character.
//
if (ped->charPasswordChar)
{
Edit_SetPasswordCharHandler(ped, ped->charPasswordChar);
}
//
// If it is a TrueType font and it's a new app, set both the margins at the
// max negative width values for all types of the edit controls.
// (NOTE: Can't use ped->f40Compat here because edit-controls inside dialog
// boxes without DS_LOCALEDIT style are always marked as 4.0 compat.
// This is the fix for NETBENCH 3.0)
//
if (ped->fTrueType && ped->f40Compat)
{
if (ped->fDBCS)
{
//
// For DBCS TrueType Font, we calc margin from ABC width.
//
Edit_CalcMarginForDBCSFont(ped, fRedraw);
}
else
{
Edit_SetMargin(ped, EC_LEFTMARGIN | EC_RIGHTMARGIN,
MAKELONG(EC_USEFONTINFO, EC_USEFONTINFO), fRedraw);
}
}
//
// We need to calc maxPixelWidth when font changes.
// If the word-wrap is ON, then this is done in EditML_Size() called later.
//
if((!ped->fSingle) && (!ped->fWrap))
{
EditML_BuildchLines(ped, 0, 0, FALSE, NULL, NULL);
}
//
// Recalc the layout.
//
Edit_Size(ped, NULL, fRedraw);
if ( ped->fFocus && ImmIsIME(GetKeyboardLayout(0)) )
{
Edit_SetCompositionFont( ped );
}
fRet = TRUE;
}
return fRet;
}
//---------------------------------------------------------------------------//
//
// Edit_IsCharNumeric AorW
//
// Tests whether the character entered is a numeral.
// For multiline and singleline edit controls with the ES_NUMBER style.
//
BOOL Edit_IsCharNumeric(PED ped, DWORD keyPress)
{
WORD wCharType;
if (ped->fAnsi)
{
char ch = (char)keyPress;
LCID lcid = (LCID)((ULONG_PTR)GetKeyboardLayout(0) & 0xFFFF);
GetStringTypeA(lcid, CT_CTYPE1, &ch, 1, &wCharType);
}
else
{
WCHAR wch = (WCHAR)keyPress;
GetStringTypeW(CT_CTYPE1, &wch, 1, &wCharType);
}
return (wCharType & C1_DIGIT ? TRUE : FALSE);
}
//---------------------------------------------------------------------------//
VOID Edit_EnableDisableIME(PED ped)
{
if ( ped->fReadOnly || ped->charPasswordChar )
{
//
// IME should be disabled
//
HIMC hImc;
hImc = ImmGetContext( ped->hwnd );
if ( hImc != NULL_HIMC )
{
ImmReleaseContext( ped->hwnd, hImc );
ped->hImcPrev = ImmAssociateContext( ped->hwnd, NULL_HIMC );
}
}
else
{
//
// IME should be enabled
//
if ( ped->hImcPrev != NULL_HIMC )
{
ped->hImcPrev = ImmAssociateContext( ped->hwnd, ped->hImcPrev );
//
// Font and the caret position might be changed while
// IME was being disabled. Set those now if the window
// has the focus.
//
if ( ped->fFocus )
{
POINT pt;
Edit_SetCompositionFont( ped );
GetCaretPos( &pt );
Edit_ImmSetCompositionWindow( ped, pt.x, pt.y );
}
}
}
Edit_InitInsert(ped, GetKeyboardLayout(0));
}
//---------------------------------------------------------------------------//
VOID Edit_ImmSetCompositionWindow(PED ped, LONG x, LONG y)
{
COMPOSITIONFORM cf = {0};
COMPOSITIONFORM cft = {0};
RECT rcScreenWindow;
HIMC hImc;
hImc = ImmGetContext(ped->hwnd);
if ( hImc != NULL_HIMC )
{
if ( ped->fFocus )
{
GetWindowRect( ped->hwnd, &rcScreenWindow);
//
// assuming RECT.left is the first and and RECT.top is the second field
//
MapWindowPoints( ped->hwnd, HWND_DESKTOP, (LPPOINT)&rcScreenWindow, 2);
if (ped->fInReconversion)
{
DWORD dwPoint = (DWORD)(ped->fAnsi ? SendMessageA : SendMessageW)(ped->hwnd, EM_POSFROMCHAR, ped->ichMinSel, 0);
x = GET_X_LPARAM(dwPoint);
y = GET_Y_LPARAM(dwPoint);
TraceMsg(TF_STANDARD, "UxEdit: Edit_ImmSetCompositionWindow: fInReconversion (%d,%d)", x, y);
}
//
// The window currently has the focus.
//
if (ped->fSingle)
{
//
// Single line edit control.
//
cf.dwStyle = CFS_POINT;
cf.ptCurrentPos.x = x;
cf.ptCurrentPos.y = y;
SetRectEmpty(&cf.rcArea);
}
else
{
//
// Multi line edit control.
//
cf.dwStyle = CFS_RECT;
cf.ptCurrentPos.x = x;
cf.ptCurrentPos.y = y;
cf.rcArea = ped->rcFmt;
}
ImmGetCompositionWindow( hImc, &cft );
if ( (!RtlEqualMemory(&cf,&cft,sizeof(COMPOSITIONFORM))) ||
(ped->ptScreenBounding.x != rcScreenWindow.left) ||
(ped->ptScreenBounding.y != rcScreenWindow.top) )
{
ped->ptScreenBounding.x = rcScreenWindow.left;
ped->ptScreenBounding.y = rcScreenWindow.top;
ImmSetCompositionWindow( hImc, &cf );
}
}
ImmReleaseContext( ped->hwnd, hImc );
}
}
//---------------------------------------------------------------------------//
VOID Edit_SetCompositionFont(PED ped)
{
HIMC hImc;
LOGFONTW lf;
hImc = ImmGetContext( ped->hwnd );
if (hImc != NULL_HIMC)
{
if (ped->hFont)
{
GetObjectW(ped->hFont, sizeof(LOGFONTW), (LPLOGFONTW)&lf);
}
else
{
GetObjectW(GetStockObject(SYSTEM_FONT), sizeof(LOGFONTW), (LPLOGFONTW)&lf);
}
ImmSetCompositionFontW( hImc, &lf );
ImmReleaseContext( ped->hwnd, hImc );
}
}
//---------------------------------------------------------------------------//
//
// Edit_InitInsert
//
// this function is called when:
// 1) a edit control window is initialized
// 2) active keyboard layout of current thread is changed
// 3) read only attribute of this edit control is changed
//
VOID Edit_InitInsert( PED ped, HKL hkl )
{
ped->fKorea = FALSE;
ped->fInsertCompChr = FALSE;
ped->fNoMoveCaret = FALSE;
ped->fResultProcess = FALSE;
if (g_fIMMEnabled && ImmIsIME(hkl) )
{
if (PRIMARYLANGID(LOWORD(HandleToUlong(hkl))) == LANG_KOREAN )
{
ped->fKorea = TRUE;
}
//
// LATER:this flag should be set based on the IME caps
// retrieved from IME. (Such IME caps should be defined)
// For now, we can safely assume that only Korean IMEs
// set CS_INSERTCHAR.
//
if ( ped->fKorea )
{
ped->fInsertCompChr = TRUE;
}
}
//
// if we had a composition character, the shape of caret
// is changed. We need to reset the caret shape.
//
if ( ped->fReplaceCompChr )
{
ped->fReplaceCompChr = FALSE;
Edit_SetCaretHandler( ped );
}
}
//---------------------------------------------------------------------------//
VOID Edit_SetCaretHandler(PED ped)
{
HDC hdc;
PSTR pText;
SIZE size = {0};
//
// In any case destroy caret beforehand otherwise SetCaretPos()
// will get crazy.. win95d-B#992,B#2370
//
if (ped->fFocus)
{
HideCaret(ped->hwnd);
DestroyCaret();
if ( ped->fReplaceCompChr )
{
hdc = Edit_GetDC(ped, TRUE );
pText = Edit_Lock(ped);
if ( ped->fAnsi)
{
GetTextExtentPointA(hdc, pText + ped->ichCaret, 2, &size);
}
else
{
GetTextExtentPointW(hdc, (LPWSTR)pText + ped->ichCaret, 1, &size);
}
Edit_Unlock(ped);
Edit_ReleaseDC(ped, hdc, TRUE);
CreateCaret(ped->hwnd, (HBITMAP)NULL, size.cx, ped->lineHeight);
}
else
{
CreateCaret(ped->hwnd,
(HBITMAP)NULL,
(ped->cxSysCharWidth > ped->aveCharWidth ? 1 : 2),
ped->lineHeight);
}
hdc = Edit_GetDC(ped, TRUE );
if ( ped->fSingle )
{
EditSL_SetCaretPosition( ped, hdc );
}
else
{
EditML_SetCaretPosition( ped, hdc );
}
Edit_ReleaseDC(ped, hdc, TRUE);
ShowCaret(ped->hwnd);
}
}
//---------------------------------------------------------------------------//
#define GET_COMPOSITION_STRING (ped->fAnsi ? ImmGetCompositionStringA : ImmGetCompositionStringW)
BOOL Edit_ResultStrHandler(PED ped)
{
HIMC himc;
LPSTR lpStr;
LONG dwLen;
ped->fInsertCompChr = FALSE; // clear the state
ped->fNoMoveCaret = FALSE;
himc = ImmGetContext(ped->hwnd);
if ( himc == NULL_HIMC )
{
return FALSE;
}
dwLen = GET_COMPOSITION_STRING(himc, GCS_RESULTSTR, NULL, 0);
if (dwLen == 0)
{
ImmReleaseContext(ped->hwnd, himc);
return FALSE;
}
dwLen *= ped->cbChar;
dwLen += ped->cbChar;
lpStr = (LPSTR)GlobalAlloc(GPTR, dwLen);
if (lpStr == NULL)
{
ImmReleaseContext(ped->hwnd, himc);
return FALSE;
}
GET_COMPOSITION_STRING(himc, GCS_RESULTSTR, lpStr, dwLen);
if (ped->fSingle)
{
EditSL_ReplaceSel(ped, lpStr);
}
else
{
EditML_ReplaceSel(ped, lpStr);
}
GlobalFree((HGLOBAL)lpStr);
ImmReleaseContext(ped->hwnd, himc);
ped->fReplaceCompChr = FALSE;
ped->fNoMoveCaret = FALSE;
ped->fResultProcess = FALSE;
Edit_SetCaretHandler(ped);
return TRUE;
}
//---------------------------------------------------------------------------//
LRESULT Edit_ImeComposition(PED ped, WPARAM wParam, LPARAM lParam)
{
INT ich;
LRESULT lReturn = 1;
HDC hdc;
BOOL fSLTextUpdated = FALSE;
ICH iResult;
HIMC hImc;
BYTE TextBuf[4];
if (!ped->fInsertCompChr)
{
if (lParam & GCS_RESULTSTR)
{
Edit_InOutReconversionMode(ped, FALSE);
if (!ped->fKorea && ped->wImeStatus & EIMES_GETCOMPSTRATONCE)
{
ResultAtOnce:
Edit_ResultStrHandler(ped);
lParam &= ~GCS_RESULTSTR;
}
}
return DefWindowProc(ped->hwnd, WM_IME_COMPOSITION, wParam, lParam);
}
//
// In case of Ansi edit control, the length of minimum composition string
// is 2. Check here maximum byte of edit control.
//
if( ped->fAnsi && ped->cchTextMax == 1 )
{
HIMC hImc;
hImc = ImmGetContext( ped->hwnd );
ImmNotifyIME(hImc, NI_COMPOSITIONSTR, CPS_CANCEL, 0L);
ImmReleaseContext( ped->hwnd, hImc );
MessageBeep(MB_ICONEXCLAMATION);
return lReturn;
}
//
// Don't move this after CS_NOMOVECARET check.
// In case if skip the message, fNoMoveCaret should not be set.
//
if ((lParam & CS_INSERTCHAR) && ped->fResultProcess)
{
//
// Now we're in result processing. GCS_RESULTSTR ends up
// to WM_IME_CHAR and WM_CHAR. Since WM_CHAR is posted,
// the message(s) will come later than this CS_INSERTCHAR
// message. This composition character should be handled
// after the WM_CHAR message(s).
//
if(ped->fAnsi)
{
PostMessageA(ped->hwnd, WM_IME_COMPOSITION, wParam, lParam);
}
else
{
PostMessageW(ped->hwnd, WM_IME_COMPOSITION, wParam, lParam);
}
ped->fResultProcess = FALSE;
return lReturn;
}
if (lParam & GCS_RESULTSTR)
{
if (!ped->fKorea && ped->wImeStatus & EIMES_GETCOMPSTRATONCE)
{
goto ResultAtOnce;
}
ped->fResultProcess = TRUE;
if ( ped->fReplaceCompChr )
{
//
// we have a DBCS character to be replaced.
// let's delete it before inserting the new one.
//
ich = (ped->fAnsi) ? 2 : 1;
ped->fReplaceCompChr = FALSE;
ped->ichMaxSel = min(ped->ichCaret + ich, ped->cch);
ped->ichMinSel = ped->ichCaret;
if ( Edit_DeleteText( ped ) > 0 )
{
if ( ped->fSingle )
{
//
// Update the display
//
Edit_NotifyParent(ped, EN_UPDATE);
hdc = Edit_GetDC(ped,FALSE);
EditSL_DrawText(ped, hdc, 0);
Edit_ReleaseDC(ped,hdc,FALSE);
//
// Tell parent our text contents changed.
//
Edit_NotifyParent(ped, EN_CHANGE);
}
}
Edit_SetCaretHandler( ped );
}
}
else if (lParam & CS_INSERTCHAR)
{
//
// If we are in the middle of a mousedown command, don't do anything.
//
if (ped->fMouseDown)
{
return lReturn;
}
//
// We can safely assume that interimm character is always DBCS.
//
ich = ( ped->fAnsi ) ? 2 : 1;
if ( ped->fReplaceCompChr )
{
//
// we have a character to be replaced.
// let's delete it before inserting the new one.
// when we have a composition characters, the
// caret is placed before the composition character.
//
ped->ichMaxSel = min(ped->ichCaret+ich, ped->cch);
ped->ichMinSel = ped->ichCaret;
}
//
// let's delete current selected text or composition character
//
if ( ped->fSingle )
{
if ( Edit_DeleteText( ped ) > 0 )
{
fSLTextUpdated = TRUE;
}
}
else
{
EditML_DeleteText( ped );
}
//
// When the composition charcter is canceled, IME may give us NULL wParam,
// with CS_INSERTCHAR flag on. We shouldn't insert a NULL character.
//
if ( wParam != 0 )
{
if ( ped->fAnsi )
{
TextBuf[0] = HIBYTE(LOWORD(wParam)); // leading byte
TextBuf[1] = LOBYTE(LOWORD(wParam)); // trailing byte
TextBuf[2] = '\0';
}
else
{
TextBuf[0] = LOBYTE(LOWORD(wParam));
TextBuf[1] = HIBYTE(LOWORD(wParam));
TextBuf[2] = '\0';
TextBuf[3] = '\0';
}
if ( ped->fSingle )
{
iResult = EditSL_InsertText( ped, (LPSTR)TextBuf, ich );
if (iResult == 0)
{
//
// Couldn't insert the text, for e.g. the text exceeded the limit.
//
MessageBeep(0);
}
else if (iResult > 0)
{
//
// Remember we need to update the text.
//
fSLTextUpdated = TRUE;
}
}
else
{
iResult = EditML_InsertText( ped, (LPSTR)TextBuf, ich, TRUE);
}
if ( iResult > 0 )
{
//
// ped->fReplaceCompChr will be reset:
//
// 1) when the character is finalized.
// we will receive GCS_RESULTSTR
//
// 2) when the character is canceled.
//
// we will receive WM_IME_COMPOSITION|CS_INSERTCHAR
// with wParam == 0 (in case of user types backspace
// at the first element of composition character).
//
// or
//
// we will receive WM_IME_ENDCOMPOSITION message
//
ped->fReplaceCompChr = TRUE;
//
// Caret should be placed BEFORE the composition
// character.
//
ped->ichCaret = max( 0, (INT)ped->ichCaret - ich);
Edit_SetCaretHandler( ped );
}
else
{
//
// We failed to insert a character. We might run out
// of memory, or reached to the text size limit. let's
// cancel the composition character.
//
hImc = ImmGetContext(ped->hwnd);
ImmNotifyIME(hImc, NI_COMPOSITIONSTR, CPS_CANCEL, 0);
ImmReleaseContext(ped->hwnd, hImc);
ped->fReplaceCompChr = FALSE;
Edit_SetCaretHandler( ped );
}
}
else
{
//
// the composition character is canceled.
//
ped->fReplaceCompChr = FALSE;
Edit_SetCaretHandler( ped );
}
//
// We won't notify parent the text change
// because the composition character has
// not been finalized.
//
if ( fSLTextUpdated )
{
//
// Update the display
//
Edit_NotifyParent(ped, EN_UPDATE);
hdc = Edit_GetDC(ped,FALSE);
if ( ped->fReplaceCompChr )
{
//
// move back the caret to the original position
// temporarily so that our new block cursor can
// be located within the visible area of window.
//
ped->ichCaret = min( ped->cch, ped->ichCaret + ich);
EditSL_ScrollText(ped, hdc);
ped->ichCaret = max( 0, (INT)ped->ichCaret - ich);
}
else
{
EditSL_ScrollText(ped, hdc);
}
EditSL_DrawText(ped, hdc, 0);
Edit_ReleaseDC(ped,hdc,FALSE);
//
// Tell parent our text contents changed.
//
Edit_NotifyParent(ped, EN_CHANGE);
}
return lReturn;
}
return DefWindowProc(ped->hwnd, WM_IME_COMPOSITION, wParam, lParam);
}
//---------------------------------------------------------------------------//
//
// HanjaKeyHandler
//
// VK_HANJA handler - Korean only
//
BOOL HanjaKeyHandler(PED ped)
{
BOOL changeSelection = FALSE;
if (ped->fKorea && !ped->fReadOnly)
{
ICH oldCaret = ped->ichCaret;
if (ped->fReplaceCompChr)
{
return FALSE;
}
if (ped->ichMinSel < ped->ichMaxSel)
{
ped->ichCaret = ped->ichMinSel;
}
if (!ped->cch || ped->cch == ped->ichCaret)
{
ped->ichCaret = oldCaret;
MessageBeep(MB_ICONEXCLAMATION);
return FALSE;
}
if (ped->fAnsi)
{
if (ImmEscapeA(GetKeyboardLayout(0), ImmGetContext(ped->hwnd),
IME_ESC_HANJA_MODE, (Edit_Lock(ped) + ped->ichCaret * ped->cbChar)))
{
changeSelection = TRUE;
}
else
{
ped->ichCaret = oldCaret;
}
Edit_Unlock(ped);
}
else
{
if (ImmEscapeW(GetKeyboardLayout(0), ImmGetContext(ped->hwnd),
IME_ESC_HANJA_MODE, (Edit_Lock(ped) + ped->ichCaret * ped->cbChar)))
{
changeSelection = TRUE;
}
else
{
ped->ichCaret = oldCaret;
}
Edit_Unlock(ped);
}
}
return changeSelection;
}
//---------------------------------------------------------------------------//
// Edit_RequestHandler()
//
// Handles WM_IME_REQUEST message originated by IME
//
#define MAX_ECDOCFEED 20
ICH Edit_ImeGetDocFeedMin(PED ped, LPSTR lpstr)
{
ICH ich;
if (ped->ichMinSel > MAX_ECDOCFEED)
{
ich = ped->ichMinSel - MAX_ECDOCFEED;
ich = Edit_AdjustIch(ped, lpstr, ich);
}
else
{
ich = 0;
}
return ich;
}
ICH Edit_ImeGetDocFeedMax(PED ped, LPSTR lpstr)
{
ICH ich;
if ((ped->cch - ped->ichMaxSel) > MAX_ECDOCFEED)
{
ich = ped->ichMaxSel + MAX_ECDOCFEED;
ich = Edit_AdjustIch(ped, lpstr, ich);
}
else
{
ich = ped->cch;
}
return ich;
}
LRESULT Edit_RequestHandler(PED ped, WPARAM dwSubMsg, LPARAM lParam)
{
LRESULT lreturn = 0L;
switch (dwSubMsg)
{
case IMR_CONFIRMRECONVERTSTRING:
//
// CHECK VERSION of the structure
//
if (lParam && ((LPRECONVERTSTRING)lParam)->dwVersion != 0)
{
TraceMsg(TF_STANDARD, "Edit_RequestHandler: RECONVERTSTRING dwVersion is not expected.",
((LPRECONVERTSTRING)lParam)->dwVersion);
return 0L;
}
if (lParam && ped && ped->fFocus && ped->hText && ImmIsIME(GetKeyboardLayout(0)))
{
LPVOID lpSrc;
lpSrc = Edit_Lock(ped);
if (lpSrc == NULL)
{
TraceMsg(TF_STANDARD, "Edit_RequestHandler: LOCALLOCK(ped) failed.");
}
else
{
LPRECONVERTSTRING lpRCS = (LPRECONVERTSTRING)lParam;
ICH ichStart;
ICH ichEnd;
UINT cchLen;
ichStart = Edit_ImeGetDocFeedMin(ped, lpSrc);
ichEnd = Edit_ImeGetDocFeedMax(ped, lpSrc);
UserAssert(ichEnd >= ichStart);
cchLen = ichEnd - ichStart; // holds character count.
Edit_Unlock(ped);
if (lpRCS->dwStrLen != cchLen)
{
TraceMsg(TF_STANDARD, "Edit_RequestHandler: the given string length is not expected.");
}
else
{
ICH ichSelStart;
ICH ichSelEnd;
ichSelStart = ichStart + (lpRCS->dwCompStrOffset / ped->cbChar);
ichSelEnd = ichSelStart + lpRCS->dwCompStrLen;
(ped->fAnsi ? SendMessageA : SendMessageW)(ped->hwnd, EM_SETSEL, ichSelStart, ichSelEnd);
lreturn = 1L;
}
}
}
break;
case IMR_RECONVERTSTRING:
//
// CHECK VERSION of the structure
//
if (lParam && ((LPRECONVERTSTRING)lParam)->dwVersion != 0)
{
TraceMsg(TF_STANDARD, "UxEdit: Edit_RequestHandler: RECONVERTSTRING dwVersion is not expected.");
return 0L;
}
if (ped && ped->fFocus && ped->hText && ImmIsIME(GetKeyboardLayout(0)))
{
ICH ichStart;
ICH ichEnd;
UINT cchLen;
UINT cchSelLen;
LPVOID lpSrc;
lpSrc = Edit_Lock(ped);
if (lpSrc == NULL)
{
TraceMsg(TF_STANDARD, "Edit_RequestHandler: LOCALLOCK(ped) failed.");
return 0L;
}
ichStart = Edit_ImeGetDocFeedMin(ped, lpSrc);
ichEnd = Edit_ImeGetDocFeedMax(ped, lpSrc);
UserAssert(ichEnd >= ichStart);
cchLen = ichEnd - ichStart; // holds character count.
cchSelLen = ped->ichMaxSel - ped->ichMinSel; // holds character count.
if (cchLen == 0)
{
// if we have no selection,
// just return 0.
break;
}
UserAssert(ped->cbChar == sizeof(BYTE) || ped->cbChar == sizeof(WCHAR));
// This Edit Control has selection.
if (lParam == 0)
{
//
// IME just want to get required size for buffer.
// cchLen + 1 is needed to reserve room for trailing L'\0'.
// ~~~~
lreturn = sizeof(RECONVERTSTRING) + (cchLen + 1) * ped->cbChar;
}
else
{
LPRECONVERTSTRING lpRCS = (LPRECONVERTSTRING)lParam;
LPVOID lpDest = (LPBYTE)lpRCS + sizeof(RECONVERTSTRING);
// check buffer size
// if the given buffer is smaller than actual needed size,
// shrink our size to fit the buffer
if ((INT)lpRCS->dwSize <= sizeof(RECONVERTSTRING) + cchLen * ped->cbChar)
{
TraceMsg(TF_STANDARD, "UxEdit: Edit_Request: ERR09");
cchLen = (lpRCS->dwSize - sizeof(RECONVERTSTRING)) / ped->cbChar - ped->cbChar;
}
lpRCS->dwStrOffset = sizeof(RECONVERTSTRING); // buffer begins just after RECONVERTSTRING
lpRCS->dwCompStrOffset =
lpRCS->dwTargetStrOffset = (ped->ichMinSel - ichStart) * ped->cbChar; // BYTE count offset
lpRCS->dwStrLen = cchLen; // TCHAR count
lpRCS->dwCompStrLen =
lpRCS->dwTargetStrLen = cchSelLen; // TCHAR count
RtlCopyMemory(lpDest,
(LPBYTE)lpSrc + ichStart * ped->cbChar,
cchLen * ped->cbChar);
// Null-Terminate the string
if (ped->fAnsi)
{
LPBYTE psz = (LPBYTE)lpDest;
psz[cchLen] = '\0';
}
else
{
LPWSTR pwsz = (LPWSTR)lpDest;
pwsz[cchLen] = L'\0';
}
Edit_Unlock(ped);
// final buffer size
lreturn = sizeof(RECONVERTSTRING) + (cchLen + 1) * ped->cbChar;
Edit_InOutReconversionMode(ped, TRUE);
Edit_ImmSetCompositionWindow(ped, 0, 0);
}
}
break;
}
return lreturn;
}
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