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windows-xp/Source/XPSP1/NT/shell/comctl32/v6/editsl.c

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#include "ctlspriv.h"
#pragma hdrstop
#include "usrctl32.h"
#include "edit.h"
//---------------------------------------------------------------------------//
//
// Language pack notes:
// With the language pack loaded all positional processing is based on
// ped->xOffset rather than ped->ichScreenStart. The non-lpk optimisation of
// maintaining ped->ichScreenStart doesn't work because of the
// glyph reordering features of complex scripts.
//
//---------------------------------------------------------------------------//
//
// Forwards
//
VOID EditSL_ChangeSelection(PED, HDC, ICH, ICH);
VOID EditSL_DrawLine(PED, HDC, int, int, ICH, int, BOOL);
BOOL EditSL_Undo(PED);
//---------------------------------------------------------------------------//
//
typedef BOOL (*FnGetTextExtentPoint)(HDC, PVOID, int, LPSIZE);
//---------------------------------------------------------------------------//
INT EditSL_CalcStringWidth(PED ped, HDC hdc, ICH ich, ICH cch)
{
if (cch == 0)
{
return 0;
}
if (ped->charPasswordChar)
{
return cch * ped->cPasswordCharWidth;
}
else
{
SIZE size;
if (ped->fNonPropFont && !ped->fDBCS)
{
size.cx = cch * ped->aveCharWidth;
}
else
{
PSTR pText = Edit_Lock(ped);
if (ped->fAnsi)
{
GetTextExtentPointA(hdc, (LPSTR)(pText + ich), cch, &size);
}
else
{
GetTextExtentPointW(hdc, (LPWSTR)pText + ich, cch, &size);
}
Edit_Unlock(ped);
}
return size.cx - ped->charOverhang;
}
}
//---------------------------------------------------------------------------//
//
// EditSL_CalcXOffsetLeft
//
// Calculates the starting offset for left-aligned strings.
//
INT EditSL_CalcXOffsetLeft(PED ped, HDC hdc, ICH ich)
{
int cch = (int)(ich - ped->ichScreenStart);
if (cch <= 0)
{
return 0;
}
return EditSL_CalcStringWidth(ped, hdc, ped->ichScreenStart, cch);
}
//---------------------------------------------------------------------------//
//
// EditSL_CalcXOffsetSpecial
//
// Calculates the horizontal offset (indent) required for right or center
// justified lines.
//
INT EditSL_CalcXOffsetSpecial(PED ped, HDC hdc, ICH ich)
{
PSTR pText;
ICH cch, ichStart = ped->ichScreenStart;
int cx;
//
// Calc the number of characters from start to right end.
//
pText = Edit_Lock(ped);
cch = Edit_CchInWidth(ped, hdc, (LPSTR)(pText + ichStart * ped->cbChar),
ped->cch - ichStart, ped->rcFmt.right - ped->rcFmt.left, TRUE);
Edit_Unlock(ped);
//
// Once the last character of the string has been scrolled out of
// the view, use normal offset calculation.
//
if (ped->ichScreenStart + cch < ped->cch)
{
return EditSL_CalcXOffsetLeft(ped, hdc, ich);
}
cx = ped->rcFmt.right - ped->rcFmt.left - EditSL_CalcStringWidth(ped,
hdc, ichStart, cch);
if (ped->format == ES_CENTER)
{
cx = max(0, cx / 2);
}
else if (ped->format == ES_RIGHT)
{
//
// Subtract 1 so that the 1 pixel wide cursor will be in the visible
// region on the very right side of the screen, mle does this.
//
cx = max(0, cx - 1);
}
return cx + EditSL_CalcStringWidth(ped, hdc, ichStart, ich - ichStart);
}
//---------------------------------------------------------------------------//
//
// EditSL_SetCaretPosition AorW
//
// If the window has the focus, find where the caret belongs and move
// it there.
//
VOID EditSL_SetCaretPosition(PED ped, HDC hdc)
{
int xPosition;
//
// We will only position the caret if we have the focus since we don't want
// to move the caret while another window could own it.
//
if (!ped->fFocus)
{
return;
}
if (ped->fCaretHidden)
{
SetCaretPos(-20000, -20000);
return;
}
xPosition = EditSL_IchToLeftXPos(ped, hdc, ped->ichCaret);
//
// Don't let caret go out of bounds of edit control if there is too much
// text.
//
if (ped->pLpkEditCallout)
{
xPosition += ped->iCaretOffset;
xPosition = max(xPosition , 0);
xPosition = min(xPosition, ped->rcFmt.right - 1 -
((ped->cxSysCharWidth > ped->aveCharWidth) ? 1 : 2));
}
else
{
xPosition = min(xPosition, ped->rcFmt.right -
((ped->cxSysCharWidth > ped->aveCharWidth) ? 1 : 2));
}
SetCaretPos(xPosition, ped->rcFmt.top);
//
// FE_IME EditSL_SetCaretPosition - ECImmSetCompostionWindow( CFS_POINT )
//
if (g_fIMMEnabled && ImmIsIME(GetKeyboardLayout(0)))
{
Edit_ImmSetCompositionWindow(ped, xPosition, ped->rcFmt.top);
}
}
//---------------------------------------------------------------------------//
//
// EditSL_IchToLeftXPos AorW
//
// Given a character index, find its (left side) x coordinate within
// the ped->rcFmt rectangle assuming the character ped->ichScreenStart is at
// coordinates (ped->rcFmt.top, ped->rcFmt.left). A negative value is
// return ed if the character ich is to the left of ped->ichScreenStart. WARNING:
// ASSUMES AT MOST 1000 characters will be VISIBLE at one time on the screen.
// There may be 64K total characters in the editcontrol, but we can only
// display 1000 without scrolling. This shouldn't be a problem obviously.
//
INT EditSL_IchToLeftXPos(PED ped, HDC hdc, ICH ich)
{
int textExtent;
PSTR pText;
SIZE size;
int cchDiff;
if (ped->pLpkEditCallout)
{
pText = Edit_Lock(ped);
textExtent = ped->pLpkEditCallout->EditIchToXY((PED0)ped, hdc, pText, ped->cch, ich);
Edit_Unlock(ped);
return textExtent;
}
//
// Check if we are adding lots and lots of chars. A paste for example could
// cause this and GetTextExtents could overflow on this.
//
cchDiff = (int)ich - (int)ped->ichScreenStart;
if (cchDiff > 1000)
{
return (30000);
}
else if (cchDiff < -1000)
{
return (-30000);
}
if (ped->format != ES_LEFT)
{
return (ped->rcFmt.left + EditSL_CalcXOffsetSpecial(ped, hdc, ich));
}
//
// Caret position /w DBCS text, we can not optimize...
//
if (ped->fNonPropFont && !ped->fDBCS)
{
return (ped->rcFmt.left + cchDiff*ped->aveCharWidth);
}
//
// Check if password hidden chars are being used.
//
if (ped->charPasswordChar)
{
return ( ped->rcFmt.left + cchDiff*ped->cPasswordCharWidth);
}
pText = Edit_Lock(ped);
if (ped->fAnsi)
{
if (cchDiff >= 0)
{
GetTextExtentPointA(hdc, (LPSTR)(pText + ped->ichScreenStart),
cchDiff, &size);
textExtent = size.cx;
//
// In case of signed/unsigned overflow since the text extent may be
// greater than maxint. This happens with long single line edit
// controls. The rect we edit text in will never be greater than 30000
// pixels so we are ok if we just ignore them.
//
if (textExtent < 0 || textExtent > 31000)
{
textExtent = 30000;
}
}
else
{
GetTextExtentPointA(hdc,(LPSTR)(pText + ich), -cchDiff, &size);
textExtent = (-1) * size.cx;
}
}
else
{
if (cchDiff >= 0)
{
GetTextExtentPointW(hdc, (LPWSTR)(pText + ped->ichScreenStart*sizeof(WCHAR)),
cchDiff, &size);
textExtent = size.cx;
//
// In case of signed/unsigned overflow since the text extent may be
// greater than maxint. This happens with long single line edit
// controls. The rect we edit text in will never be greater than 30000
// pixels so we are ok if we just ignore them.
//
if (textExtent < 0 || textExtent > 31000)
{
textExtent = 30000;
}
}
else
{
GetTextExtentPointW(hdc,(LPWSTR)(pText + ich*sizeof(WCHAR)), -cchDiff, &size);
textExtent = (-1) * size.cx;
}
}
Edit_Unlock(ped);
return (ped->rcFmt.left + textExtent - (textExtent ? ped->charOverhang : 0));
}
//---------------------------------------------------------------------------//
//
// EditSL_SetSelection AorW
//
// Sets the PED to have the new selection specified.
//
VOID EditSL_SetSelection(PED ped, ICH ichSelStart, ICH ichSelEnd)
{
HDC hdc = Edit_GetDC(ped, FALSE);
if (ichSelStart == 0xFFFFFFFF)
{
//
// Set no selection if we specify -1
//
ichSelStart = ichSelEnd = ped->ichCaret;
}
//
// Bounds ichSelStart, ichSelEnd are checked in EditSL_ChangeSelection...
//
EditSL_ChangeSelection(ped, hdc, ichSelStart, ichSelEnd);
//
// Put the caret at the end of the selected text
//
ped->ichCaret = ped->ichMaxSel;
EditSL_SetCaretPosition(ped, hdc);
//
// We may need to scroll the text to bring the caret into view...
//
EditSL_ScrollText(ped, hdc);
Edit_ReleaseDC(ped, hdc, FALSE);
}
//---------------------------------------------------------------------------//
VOID EditSL_GetClipRect(PED ped, HDC hdc, ICH ichStart, int iCount, LPRECT lpClipRect)
{
int iStCount;
PSTR pText;
if (ped->pLpkEditCallout)
{
TraceMsg(TF_STANDARD, "UxEdit: EditSL_GetClipRect - Error - Invalid call with language pack loaded");
memset(lpClipRect, 0, sizeof(RECT));
return;
}
CopyRect(lpClipRect, &ped->rcFmt);
pText = Edit_Lock(ped);
//
// Calculates the starting pos for this piece of text
//
if ((iStCount = (int)(ichStart - ped->ichScreenStart)) > 0)
{
if (ped->format == ES_LEFT)
{
lpClipRect->left += EditSL_CalcXOffsetLeft(ped, hdc, ichStart);
}
}
else
{
//
// Reset the values to visible portions
//
iCount -= (ped->ichScreenStart - ichStart);
ichStart = ped->ichScreenStart;
}
if (ped->format != ES_LEFT)
{
lpClipRect->left += EditSL_CalcXOffsetSpecial(ped, hdc, ichStart);
}
if (iCount < 0)
{
//
// This is not in the visible area of the edit control, so return
// an empty rect.
//
SetRectEmpty(lpClipRect);
Edit_Unlock(ped);
return;
}
if (ped->charPasswordChar)
{
lpClipRect->right = lpClipRect->left + ped->cPasswordCharWidth * iCount;
}
else
{
SIZE size;
if ( ped->fAnsi)
{
GetTextExtentPointA(hdc, pText + ichStart, iCount, &size);
}
else
{
GetTextExtentPointW(hdc, ((LPWSTR)pText) + ichStart, iCount, &size);
}
lpClipRect->right = lpClipRect->left + size.cx - ped->charOverhang;
}
Edit_Unlock(ped);
}
//---------------------------------------------------------------------------//
//
// EditSL_LpkEditDrawText
//
// lpk!EditDrawText always sets the BkMode for single line edits to OPAQUE.
// This causes painting problems for read-only edits in property sheets.
// Unfortunately, lpk.dll can't be changed since it would break the user32
// edit, so I'm faking lpk!EditDrawText into thinking this isn't a single
// line edit.
//
__inline VOID EditSL_LpkEditDrawText(PED ped, HDC hdc, PSTR pText)
{
BOOL fSingleSave;
fSingleSave = ped->fSingle;
ped->fSingle = FALSE;
ped->pLpkEditCallout->EditDrawText((PED0)ped, hdc, pText, ped->cch, ped->ichMinSel, ped->ichMaxSel, ped->rcFmt.top);
ped->fSingle = fSingleSave;
}
//---------------------------------------------------------------------------//
//
// EditSL_ChangeSelection AorW
//
// Changes the current selection to have the specified starting and
// ending values. Properly highlights the new selection and unhighlights
// anything deselected. If NewMinSel and NewMaxSel are out of order, we swap
// them. Doesn't update the caret position.
//
VOID EditSL_ChangeSelection(PED ped, HDC hdc, ICH ichNewMinSel, ICH ichNewMaxSel)
{
ICH temp;
ICH ichOldMinSel;
ICH ichOldMaxSel;
if (ichNewMinSel > ichNewMaxSel)
{
temp = ichNewMinSel;
ichNewMinSel = ichNewMaxSel;
ichNewMaxSel = temp;
}
ichNewMinSel = min(ichNewMinSel, ped->cch);
ichNewMaxSel = min(ichNewMaxSel, ped->cch);
//
// To avoid position to half of DBCS, check and ajust position if necessary
//
// We check ped->fDBCS and ped->fAnsi though Edit_AdjustIch checks these bits.
// We're worrying about the overhead of EcLock and EcUnlock.
//
if (ped->fDBCS && ped->fAnsi)
{
PSTR pText;
pText = Edit_Lock(ped);
ichNewMinSel = Edit_AdjustIch( ped, pText, ichNewMinSel );
ichNewMaxSel = Edit_AdjustIch( ped, pText, ichNewMaxSel );
Edit_Unlock(ped);
}
//
// Preserve the Old selection
//
ichOldMinSel = ped->ichMinSel;
ichOldMaxSel = ped->ichMaxSel;
//
// Set new selection
//
ped->ichMinSel = ichNewMinSel;
ped->ichMaxSel = ichNewMaxSel;
//
// We will find the intersection of current selection rectangle with the new
// selection rectangle. We will then invert the parts of the two rectangles
// not in the intersection.
//
if (IsWindowVisible(ped->hwnd) && (ped->fFocus || ped->fNoHideSel))
{
SELBLOCK Blk[2];
int i;
RECT rc;
if (ped->fFocus)
{
HideCaret(ped->hwnd);
}
if (ped->pLpkEditCallout)
{
//
// The language pack handles display while complex script support present
//
PSTR pText;
HBRUSH hbr = NULL;
BOOL fNeedDelete = FALSE;
//
// Give user a chance to manipulate the DC
//
hbr = Edit_GetBrush(ped, hdc, &fNeedDelete);
FillRect(hdc, &ped->rcFmt, hbr);
pText = Edit_Lock(ped);
EditSL_LpkEditDrawText(ped, hdc, pText);
Edit_Unlock(ped);
if (hbr && fNeedDelete)
{
DeleteObject(hbr);
}
}
else
{
Blk[0].StPos = ichOldMinSel;
Blk[0].EndPos = ichOldMaxSel;
Blk[1].StPos = ped->ichMinSel;
Blk[1].EndPos = ped->ichMaxSel;
if (Edit_CalcChangeSelection(ped, ichOldMinSel, ichOldMaxSel,
(LPSELBLOCK)&Blk[0], (LPSELBLOCK)&Blk[1]))
{
//
// Paint the rectangles where selection has changed.
// Paint both Blk[0] and Blk[1], if they exist.
//
for (i = 0; i < 2; i++)
{
if (Blk[i].StPos != 0xFFFFFFFF)
{
EditSL_GetClipRect(ped, hdc, Blk[i].StPos,
Blk[i].EndPos - Blk[i].StPos, (LPRECT)&rc);
EditSL_DrawLine(ped, hdc, rc.left, rc.right, Blk[i].StPos,
Blk[i].EndPos - Blk[i].StPos,
((Blk[i].StPos >= ped->ichMinSel) &&
(Blk[i].StPos < ped->ichMaxSel)));
}
}
}
}
//
// Update caret.
//
EditSL_SetCaretPosition(ped, hdc);
if (ped->fFocus)
{
ShowCaret(ped->hwnd);
}
}
}
//---------------------------------------------------------------------------//
//
// EditSL_DrawLine()
//
// This draws the line starting from ichStart, iCount number of characters;
// fSelStatus is TRUE if we're to draw the text as selected.
//
VOID EditSL_DrawLine(PED ped, HDC hdc, int xClipStPos, int xClipEndPos, ICH ichStart, int iCount, BOOL fSelStatus)
{
RECT rc;
RECT rcClip;
PSTR pText;
DWORD rgbSaveBk;
DWORD rgbSaveText;
DWORD wSaveBkMode;
int iStCount;
ICH ichNewStart;
HBRUSH hbrBack = NULL;
BOOL fNeedDelete = FALSE;
HRESULT hr;
if (ped->pLpkEditCallout)
{
TraceMsg(TF_STANDARD, "UxEdit: EditSL_DrawLine - Error - Invalid call with language pack loaded");
return;
}
//
// Anything to draw?
//
// PORTPORT: Note the symantics of IsWindowVisible and _IsWindowVisible are
// slightly different.
if (xClipStPos >= xClipEndPos || !IsWindowVisible(ped->hwnd) )
{
return;
}
if (ped->fAnsi && ped->fDBCS)
{
PSTR pT,pTOrg;
int iTCount;
pText = Edit_Lock(ped);
ichNewStart = 0;
if (ichStart > 0)
{
pT = pText + ichStart;
ichNewStart = ichStart;
while (ichNewStart &&
(ichStart - ichNewStart < ped->wMaxNegCcharPos))
{
pT = Edit_AnsiPrev(ped, pText, pT);
ichNewStart = (ICH)(pT - pText);
if (!ichNewStart)
{
break;
}
}
//
// B#16152 - win95.
// In case of T2, SLE always set an additional margin
// to erase a character (iCount == 0 case), using aveCharWidth.
// It erases unexpected an extra char if we don't use ichNewStart
// and it happens when wMaxNegCcharPos == 0.
//
if (ped->wMaxNegCcharPos == 0 && iCount == 0)
{
pT = Edit_AnsiPrev(ped, pText, pT);
ichNewStart = (ICH)(pT - pText);
}
}
iTCount = 0;
if (ichStart + iCount < ped->cch)
{
pTOrg = pT = pText + ichStart + iCount;
while ((iTCount < (int)ped->wMaxNegAcharPos) &&
(ichStart + iCount + iTCount < ped->cch))
{
pT = Edit_AnsiNext(ped, pT);
iTCount = (int)(pT - pTOrg);
}
}
Edit_Unlock(ped);
iCount = (int)(min(ichStart+iCount+iTCount, ped->cch) - ichNewStart);
}
else
{
//
// Reset ichStart to take care of the negative C widths
//
ichNewStart = max((int)(ichStart - ped->wMaxNegCcharPos), 0);
//
// Reset ichCount to take care of the negative C and A widths
//
iCount = (int)(min(ichStart+iCount+ped->wMaxNegAcharPos, ped->cch)
- ichNewStart);
}
ichStart = ichNewStart;
//
// Reset ichStart and iCount to the first one visible on the screen
//
if (ichStart < ped->ichScreenStart)
{
if (ichStart+iCount < ped->ichScreenStart)
{
return;
}
iCount -= (ped->ichScreenStart-ichStart);
ichStart = ped->ichScreenStart;
}
CopyRect(&rc, &ped->rcFmt);
//
// Set the drawing rectangle
//
rcClip.left = xClipStPos;
rcClip.right = xClipEndPos;
rcClip.top = rc.top;
rcClip.bottom = rc.bottom;
//
// Set the proper clipping rectangle
//
Edit_SetClip(ped, hdc, TRUE);
pText = Edit_Lock(ped);
//
// Calculate the starting pos for this piece of text
//
if (ped->format == ES_LEFT)
{
if (iStCount = (int)(ichStart - ped->ichScreenStart))
{
rc.left += EditSL_CalcXOffsetLeft(ped, hdc, ichStart);
}
}
else
{
rc.left += EditSL_CalcXOffsetSpecial(ped, hdc, ichStart);
}
//
// Set the background mode before calling NtUserGetControlBrush so that the app
// can change it to TRANSPARENT if it wants to.
//
SetBkMode(hdc, OPAQUE);
hr = E_FAIL;
#ifdef _USE_DRAW_THEME_TEXT_
if ( ped->hTheme )
{
INT iState;
INT iProp;
COLORREF clrBk;
COLORREF clrText;
iState = fSelStatus ? ETS_SELECTED : Edit_GetStateId(ped);
iProp = fSelStatus ? TMT_HIGHLIGHT : TMT_FILLCOLOR;
hr = GetThemeColor(ped->hTheme, EP_EDITTEXT, iState, iProp, &clrBk);
if ( SUCCEEDED(hr) )
{
iProp = fSelStatus ? TMT_HIGHLIGHTTEXT : TMT_TEXTCOLOR;
hr = GetThemeColor(ped->hTheme, EP_EDITTEXT, iState, iProp, &clrText);
if ( SUCCEEDED(hr) )
{
hbrBack = CreateSolidBrush(clrBk);
fNeedDelete = TRUE;
rgbSaveBk = SetBkColor(hdc, clrBk);
rgbSaveText = SetTextColor(hdc, clrText);
}
}
}
#endif // _USE_DRAW_THEME_TEXT_
if ( !ped->hTheme || FAILED(hr) )
{
if (fSelStatus)
{
//
// if we're not themed or we are themed but failed
// to get the highlight and highlighttext colors
//
// use normal colors
//
hbrBack = GetSysColorBrush(COLOR_HIGHLIGHT);
if (hbrBack == NULL)
{
goto sldl_errorexit;
}
rgbSaveBk = SetBkColor(hdc, GetSysColor(COLOR_HIGHLIGHT));
rgbSaveText = SetTextColor(hdc, GetSysColor(COLOR_HIGHLIGHTTEXT));
}
else
{
//
// We always want to send this so that the app has a chance to muck
// with the DC.
//
// Note that ReadOnly and Disabled edit fields are drawn as "static"
// instead of as "active."
//
hbrBack = Edit_GetBrush(ped, hdc, &fNeedDelete);
rgbSaveBk = GetBkColor(hdc);
rgbSaveText = GetTextColor(hdc);
}
}
//
// Erase the rectangular area before text is drawn. Note that we inflate
// the rect by 1 so that the selection color has a one pixel border around
// the text.
//
InflateRect(&rcClip, 0, 1);
FillRect(hdc, &rcClip, hbrBack);
InflateRect(&rcClip, 0, -1);
if (ped->charPasswordChar)
{
wSaveBkMode = SetBkMode(hdc, TRANSPARENT);
for (iStCount = 0; iStCount < iCount; iStCount++)
{
if ( ped->fAnsi )
{
ExtTextOutA(hdc, rc.left, rc.top, ETO_CLIPPED, &rcClip,
(LPSTR)&ped->charPasswordChar, 1, NULL);
}
else
{
ExtTextOutW(hdc, rc.left, rc.top, ETO_CLIPPED, &rcClip,
(LPWSTR)&ped->charPasswordChar, 1, NULL);
}
rc.left += ped->cPasswordCharWidth;
}
SetBkMode(hdc, wSaveBkMode);
}
else
{
if ( ped->fAnsi )
{
ExtTextOutA(hdc, rc.left, rc.top, ETO_CLIPPED, &rcClip,
pText+ichStart,iCount, NULL);
}
else
{
ExtTextOutW(hdc, rc.left, rc.top, ETO_CLIPPED, &rcClip,
((LPWSTR)pText)+ichStart,iCount, NULL);
}
}
SetTextColor(hdc, rgbSaveText);
SetBkColor(hdc, rgbSaveBk);
if (hbrBack && fNeedDelete)
{
DeleteObject(hbrBack);
}
sldl_errorexit:
Edit_Unlock(ped);
}
//---------------------------------------------------------------------------//
//
// EditSL_GetBlkEnd AorW
//
// Given a Starting point and and end point, this function return s whether the
// first few characters fall inside or outside the selection block and if so,
// howmany characters?
//
INT EditSL_GetBlkEnd(PED ped, ICH ichStart, ICH ichEnd, BOOL *lpfStatus)
{
*lpfStatus = FALSE;
if (ichStart >= ped->ichMinSel)
{
if (ichStart >= ped->ichMaxSel)
{
return (ichEnd - ichStart);
}
*lpfStatus = TRUE;
return (min(ichEnd, ped->ichMaxSel) - ichStart);
}
return (min(ichEnd, ped->ichMinSel) - ichStart);
}
//---------------------------------------------------------------------------//
//
// EditSL_DrawCueBannerText (Unicode Only!)
//
// This function is called by EditSL_DrawText to display the cue banner text in
// the edit box.
//
// Note:
// May need to call pLpkEditCallout to support complex scripts.
//
VOID EditSL_DrawCueBannerText(PED ped, HDC hdc, RECT rc)
{
//
// Draw the overlay of the cue banner text.
// Only draw this text if:
// 1. has cue banner text to display
// 2. the edit box is empty,
// 3. does not have focus,
// 4. is not disabled
// 5. and is not read only
//
if (ped->pszCueBannerText
&& ped->cch == 0
&& !ped->fFocus
&& !ped->fDisabled
&& !ped->fReadOnly)
{
COLORREF crOldColor;
UINT iOldAlign;
//
// Setup the font to be light gray
// NOTE: Should this be read from the theme manager?
//
crOldColor = SetTextColor(hdc, GetSysColor(COLOR_BTNSHADOW));
//
// Setup the alignment for the text to display.
// We will match our alignment with the alignment that is
// actually used for text in the edit control
//
switch (ped->format)
{
case ES_LEFT:
iOldAlign = SetTextAlign(hdc, TA_LEFT);
break;
case ES_RIGHT:
iOldAlign = SetTextAlign(hdc, TA_RIGHT);
break;
case ES_CENTER:
iOldAlign = SetTextAlign(hdc, TA_CENTER);
break;
}
// Draw the text to the box:
ExtTextOutW(hdc,
rc.left,
rc.top,
ETO_CLIPPED,
&(ped->rcFmt),
ped->pszCueBannerText, // Text
wcslen(ped->pszCueBannerText), // Size of text
NULL);
//
// Reset the alignment
//
SetTextAlign(hdc, iOldAlign);
//
// Reset the color back:
//
SetTextColor(hdc, crOldColor);
}
}
//---------------------------------------------------------------------------//
//
// EditSL_DrawText AorW
//
// Draws text for a single line edit control in the rectangle
// specified by ped->rcFmt. If ichStart == 0, starts drawing text at the left
// side of the window starting at character index ped->ichScreenStart and draws
// as much as will fit. If ichStart > 0, then it appends the characters
// starting at ichStart to the end of the text showing in the window. (ie. We
// are just growing the text length and keeping the left side
// (ped->ichScreenStart to ichStart characters) the same. Assumes the hdc came
// from Edit_GetDC so that the caret and such are properly hidden.
//
VOID EditSL_DrawText(PED ped, HDC hdc, ICH ichStart)
{
ICH cchToDraw;
RECT rc;
PSTR pText;
BOOL fSelStatus;
int iCount, iStCount;
ICH ichEnd;
BOOL fNoSelection;
BOOL fCalcRect;
BOOL fDrawLeftMargin = FALSE;
BOOL fDrawEndOfLineStrip = FALSE;
SIZE size;
HBRUSH hbr = NULL;
BOOL fNeedDelete = FALSE;
//
// PORTPORT: Note the symantics of IsWindowVisible and _IsWindowVisible are
// slightly different.
//
if (!IsWindowVisible(ped->hwnd))
{
return;
}
if (ped->pLpkEditCallout)
{
//
// The language pack handles display while complex script support present
//
//
// Give user a chance to manipulate the DC
//
hbr = Edit_GetBrush(ped, hdc, &fNeedDelete);
pText = Edit_Lock(ped);
EditSL_LpkEditDrawText(ped, hdc, pText);
Edit_Unlock(ped);
EditSL_SetCaretPosition(ped, hdc);
if (hbr && fNeedDelete)
{
DeleteObject(hbr);
}
return;
}
//
// When drawing the entire visible content of special-aligned sle
// erase the view.
//
if (ped->format != ES_LEFT && ichStart == 0)
{
hbr = Edit_GetBrush(ped, hdc, &fNeedDelete);
FillRect(hdc, &ped->rcFmt, hbr);
if (hbr && fNeedDelete)
{
DeleteObject(hbr);
}
}
pText = Edit_Lock(ped);
if (ichStart < ped->ichScreenStart)
{
#if DBG
ICH ichCompare = Edit_AdjustIch(ped, pText, ped->ichScreenStart);
UserAssert(ichCompare == ped->ichScreenStart);
#endif
ichStart = ped->ichScreenStart;
}
else if (ped->fDBCS && ped->fAnsi)
{
//
// If ichStart stays on trailing byte of DBCS, we have to
// adjust it.
//
ichStart = Edit_AdjustIch(ped, pText, ichStart);
}
CopyRect((LPRECT)&rc, (LPRECT)&ped->rcFmt);
//
// Find out how many characters will fit on the screen so that we don't do
// any needless drawing.
//
cchToDraw = Edit_CchInWidth(ped, hdc,
(LPSTR)(pText + ped->ichScreenStart * ped->cbChar),
ped->cch - ped->ichScreenStart, rc.right - rc.left, TRUE);
ichEnd = ped->ichScreenStart + cchToDraw;
//
// There is no selection if,
// 1. MinSel and MaxSel are equal OR
// 2. (This has lost the focus AND Selection is to be hidden)
//
fNoSelection = ((ped->ichMinSel == ped->ichMaxSel) || (!ped->fFocus && !ped->fNoHideSel));
if (ped->format == ES_LEFT)
{
if (iStCount = (int)(ichStart - ped->ichScreenStart))
{
rc.left += EditSL_CalcXOffsetLeft(ped, hdc, ichStart);
}
}
else
{
rc.left += EditSL_CalcXOffsetSpecial(ped, hdc, ichStart);
}
//
// If this is the begining of the whole line, we may have to draw a blank
// strip at the begining.
//
if ((ichStart == 0) && ped->wLeftMargin)
{
fDrawLeftMargin = TRUE;
}
//
// If there is nothing to draw, that means we need to draw the end of
// line strip, which erases the last character.
//
if (ichStart == ichEnd)
{
fDrawEndOfLineStrip = TRUE;
rc.left -= ped->wLeftMargin;
}
while (ichStart < ichEnd)
{
fCalcRect = TRUE;
if (fNoSelection)
{
fSelStatus = FALSE;
iCount = ichEnd - ichStart;
}
else
{
if (fDrawLeftMargin)
{
iCount = 0;
fSelStatus = FALSE;
fCalcRect = FALSE;
rc.right = rc.left;
}
else
{
iCount = EditSL_GetBlkEnd(ped, ichStart, ichEnd,
(BOOL *)&fSelStatus);
}
}
if (ichStart+iCount == ichEnd)
{
if (fSelStatus)
{
fDrawEndOfLineStrip = TRUE;
}
else
{
rc.right = ped->rcFmt.right + ped->wRightMargin;
fCalcRect = FALSE;
}
}
if (fCalcRect)
{
if (ped->charPasswordChar)
{
rc.right = rc.left + ped->cPasswordCharWidth * iCount;
}
else
{
if ( ped->fAnsi )
{
GetTextExtentPointA(hdc, pText + ichStart,
iCount, &size);
}
else
{
GetTextExtentPointW(hdc, ((LPWSTR)pText) + ichStart,
iCount, &size);
}
rc.right = rc.left + size.cx;
//
// The extent is equal to the advance width. So for TrueType fonts
// we need to take care of Neg A and C. For non TrueType, the extent
// includes the overhang.
// If drawing the selection, draw only the advance width
//
if (fSelStatus)
{
rc.right -= ped->charOverhang;
}
else if (ped->fTrueType)
{
rc.right += ped->wMaxNegC;
if (iStCount > 0)
{
rc.right += ped->wMaxNegA;
iStCount = 0;
}
}
}
}
if (fDrawLeftMargin)
{
fDrawLeftMargin = FALSE;
rc.left -= ped->wLeftMargin;
if (rc.right < rc.left)
{
rc.right = rc.left;
}
}
EditSL_DrawLine(ped, hdc, rc.left, rc.right, ichStart, iCount, fSelStatus);
ichStart += iCount;
rc.left = rc.right;
//
// If we're going to draw the selection, adjust rc.left
// to include advance width of the selected text
// For non TT fonts, ped->wMaxNegC equals ped->charOverhang
//
if (!fSelStatus && (iCount != 0) && (ichStart < ichEnd))
{
rc.left -= ped->wMaxNegC;
}
}
Edit_Unlock(ped);
//
// Check if anything to be erased on the right hand side
//
if (fDrawEndOfLineStrip &&
(rc.left < (rc.right = (ped->rcFmt.right+ped->wRightMargin))))
{
EditSL_DrawLine(ped, hdc, rc.left, rc.right, ichStart, 0, FALSE);
}
EditSL_SetCaretPosition(ped, hdc);
//
// Call the function to display the cue banner text into the edit box
//
EditSL_DrawCueBannerText(ped, hdc, rc);
}
//---------------------------------------------------------------------------//
//
// EditSL_ScrollText AorW
//
// Scrolls the text to bring the caret into view. If the text is
// scrolled, the current selection is unhighlighted. Returns TRUE if the text
// is scrolled else return s false.
//
BOOL EditSL_ScrollText(PED ped, HDC hdc)
{
PSTR pTextScreenStart;
ICH scrollAmount;
ICH newScreenStartX = ped->ichScreenStart;
ICH cch;
BOOLEAN fAdjustNext = FALSE;
if (!ped->fAutoHScroll)
{
return FALSE;
}
if (ped->pLpkEditCallout)
{
BOOL fChanged;
//
// With complex script glyph reordering, use lpk to do horz scroll
//
pTextScreenStart = Edit_Lock(ped);
fChanged = ped->pLpkEditCallout->EditHScroll((PED0)ped, hdc, pTextScreenStart);
Edit_Unlock(ped);
if (fChanged)
{
EditSL_DrawText(ped, hdc, 0);
}
return fChanged;
}
//
// Calculate the new starting screen position
//
if (ped->ichCaret <= ped->ichScreenStart)
{
//
// Caret is to the left of the starting text on the screen we must
// scroll the text backwards to bring it into view. Watch out when
// subtracting unsigned numbers when we have the possibility of going
// negative.
//
pTextScreenStart = Edit_Lock(ped);
scrollAmount = Edit_CchInWidth(ped, hdc, (LPSTR)pTextScreenStart,
ped->ichCaret, (ped->rcFmt.right - ped->rcFmt.left) / 4, FALSE);
newScreenStartX = ped->ichCaret - scrollAmount;
Edit_Unlock(ped);
}
else if (ped->ichCaret != ped->ichScreenStart)
{
pTextScreenStart = Edit_Lock(ped);
pTextScreenStart += ped->ichScreenStart * ped->cbChar;
cch = Edit_CchInWidth(ped, hdc, (LPSTR)pTextScreenStart,
ped->ichCaret - ped->ichScreenStart,
ped->rcFmt.right - ped->rcFmt.left, FALSE);
if (cch < ped->ichCaret - ped->ichScreenStart)
{
fAdjustNext = TRUE;
//
// Scroll Forward 1/4 -- if that leaves some empty space
// at the end, scroll back enough to fill the space
//
newScreenStartX = ped->ichCaret - (3 * cch / 4);
cch = Edit_CchInWidth(ped, hdc, (LPSTR)pTextScreenStart,
ped->cch - ped->ichScreenStart,
ped->rcFmt.right - ped->rcFmt.left, FALSE);
if (newScreenStartX > (ped->cch - cch))
{
newScreenStartX = ped->cch - cch;
}
}
else if (ped->format != ES_LEFT)
{
cch = Edit_CchInWidth(ped, hdc, (LPSTR)pTextScreenStart,
ped->cch - ped->ichScreenStart,
ped->rcFmt.right - ped->rcFmt.left, FALSE);
//
// Scroll the text hidden behind the left border back
// into view.
//
if (ped->ichScreenStart == ped->cch - cch)
{
pTextScreenStart -= ped->ichScreenStart * ped->cbChar;
cch = Edit_CchInWidth(ped, hdc, (LPSTR)pTextScreenStart,
ped->cch, ped->rcFmt.right - ped->rcFmt.left, FALSE);
newScreenStartX = ped->cch - cch;
}
}
Edit_Unlock(ped);
}
//
// Adjust newScreenStartX
//
if (ped->fAnsi && ped->fDBCS)
{
newScreenStartX = (fAdjustNext ? Edit_AdjustIchNext : Edit_AdjustIch)(ped,
Edit_Lock(ped),
newScreenStartX);
Edit_Unlock(ped);
}
if (ped->ichScreenStart != newScreenStartX)
{
//
// Check if we have to wipe out the left margin
//
if (ped->wLeftMargin && (ped->ichScreenStart == 0))
{
RECT rc;
HBRUSH hBrush = NULL;
BOOL fNeedDelete = FALSE;
hBrush = Edit_GetBrush(ped, hdc, &fNeedDelete);
CopyRect(&rc, &ped->rcFmt);
InflateRect(&rc, 0, 1);
rc.right = rc.left;
rc.left -= ped->wLeftMargin;
FillRect(hdc, &rc, hBrush);
if (hBrush && fNeedDelete)
{
DeleteObject(hBrush);
}
}
ped->ichScreenStart = newScreenStartX;
EditSL_DrawText(ped, hdc, 0);
//
// Caret pos is set by EditSL_DrawText().
//
return TRUE;
}
return FALSE;
}
//---------------------------------------------------------------------------//
//
// EditSL_InsertText AorW
//
// Adds up to cchInsert characters from lpText to the ped starting at
// ichCaret. If the ped only allows a maximum number of characters, then we
// will only add that many characters to the ped and send a EN_MAXTEXT
// notification code to the parent of the ec. Also, if !fAutoHScroll, then we
// only allow as many chars as will fit in the client rectangle. The number of
// characters actually added is return ed (could be 0). If we can't allocate
// the required space, we notify the parent with EN_ERRSPACE and no characters
// are added.
//
ICH EditSL_InsertText(PED ped, LPSTR lpText, ICH cchInsert)
{
HDC hdc;
PSTR pText;
ICH cchInsertCopy = cchInsert;
ICH cchT;
int textWidth;
SIZE size;
//
// First determine exactly how many characters from lpText we can insert
// into the ped.
//
if( ped->cchTextMax <= ped->cch)
{
cchInsert = 0;
}
else
{
if (!ped->fAutoHScroll)
{
pText = Edit_Lock(ped);
hdc = Edit_GetDC(ped, TRUE);
cchInsert = min(cchInsert, (unsigned)(ped->cchTextMax - ped->cch));
if (ped->charPasswordChar)
{
textWidth = ped->cch * ped->cPasswordCharWidth;
}
else
{
if (ped->fAnsi)
{
GetTextExtentPointA(hdc, (LPSTR)pText, ped->cch, &size);
}
else
{
GetTextExtentPointW(hdc, (LPWSTR)pText, ped->cch, &size);
}
textWidth = size.cx;
}
cchT = Edit_CchInWidth(ped, hdc, lpText, cchInsert,
ped->rcFmt.right - ped->rcFmt.left -
textWidth, TRUE);
cchInsert = min(cchInsert, cchT);
Edit_Unlock(ped);
Edit_ReleaseDC(ped, hdc, TRUE);
}
else
{
cchInsert = min((unsigned)(ped->cchTextMax - ped->cch), cchInsert);
}
}
//
// Now try actually adding the text to the ped
//
if (cchInsert && !Edit_InsertText(ped, lpText, &cchInsert))
{
Edit_NotifyParent(ped, EN_ERRSPACE);
return 0;
}
if (cchInsert)
{
ped->fDirty = TRUE;
}
if (cchInsert < cchInsertCopy)
{
//
// Notify parent that we couldn't insert all the text requested
//
Edit_NotifyParent(ped, EN_MAXTEXT);
}
//
// Update selection extents and the caret position. Note that Edit_InsertText
// updates ped->ichCaret, ped->ichMinSel, and ped->ichMaxSel to all be after
// the inserted text.
//
return cchInsert;
}
//---------------------------------------------------------------------------//
//
// EditSL_PasteText AorW
//
// Pastes a line of text from the clipboard into the edit control
// starting at ped->ichMaxSel. Updates ichMaxSel and ichMinSel to point to
// the end of the inserted text. Notifies the parent if space cannot be
// allocated. Returns how many characters were inserted.
//
ICH EditSL_PasteText(PED ped)
{
HANDLE hData;
LPSTR lpchClip;
ICH cchAdded = 0;
ICH clipLength;
if (!OpenClipboard(ped->hwnd))
{
goto PasteExitNoCloseClip;
}
hData = GetClipboardData(ped->fAnsi ? CF_TEXT : CF_UNICODETEXT);
if (!hData || (GlobalFlags(hData) == GMEM_INVALID_HANDLE))
{
TraceMsg(TF_STANDARD, "UxEdit: EditSL_PasteText(): couldn't get a valid handle(%x)", hData);
goto PasteExit;
}
lpchClip = GlobalLock(hData);
if (lpchClip == NULL)
{
TraceMsg(TF_STANDARD, "UxEdit: EditSL_PasteText(): USERGLOBALLOCK(%x) failed.", hData);
goto PasteExit;
}
if (ped->fAnsi)
{
LPSTR lpchClip2 = lpchClip;
//
// Find the first carrage return or line feed. Just add text to that point.
//
clipLength = (UINT)strlen(lpchClip);
for (cchAdded = 0; cchAdded < clipLength; cchAdded++)
{
if (*lpchClip2++ == 0x0D)
{
break;
}
}
}
else
{
LPWSTR lpwstrClip2 = (LPWSTR)lpchClip;
//
// Find the first carrage return or line feed. Just add text to that point.
//
clipLength = (UINT)wcslen((LPWSTR)lpchClip);
for (cchAdded = 0; cchAdded < clipLength; cchAdded++)
{
if (*lpwstrClip2++ == 0x0D)
{
break;
}
}
}
//
// Insert the text (EditSL_InsertText checks line length)
//
cchAdded = EditSL_InsertText(ped, lpchClip, cchAdded);
GlobalUnlock(hData);
PasteExit:
CloseClipboard();
PasteExitNoCloseClip:
return cchAdded;
}
//---------------------------------------------------------------------------//
//
// EditSL_ReplaceSel AorW
//
// Replaces the text in the current selection with the given text.
//
VOID EditSL_ReplaceSel(PED ped, LPSTR lpText)
{
UINT cchText;
//
// Delete text, putting it into the clean undo buffer.
//
Edit_EmptyUndo(Pundo(ped));
Edit_DeleteText(ped);
//
// B#3356
// Some apps do "clear" by selecting all of the text, then replacing it
// with "", in which case EditSL_InsertText() will return 0. But that
// doesn't mean failure...
//
if ( ped->fAnsi )
{
cchText = strlen(lpText);
}
else
{
cchText = wcslen((LPWSTR)lpText);
}
if (cchText)
{
BOOL fFailed;
UNDO undo;
HWND hwndSave;
//
// Save undo buffer, but DO NOT CLEAR IT!
//
Edit_SaveUndo(Pundo(ped), &undo, FALSE);
hwndSave = ped->hwnd;
fFailed = (BOOL) !EditSL_InsertText(ped, lpText, cchText);
if (!IsWindow(hwndSave))
{
return;
}
if (fFailed)
{
//
// UNDO the previous edit.
//
Edit_SaveUndo(&undo, Pundo(ped), FALSE);
EditSL_Undo(ped);
return;
}
}
//
// Success. So update the display
//
Edit_NotifyParent(ped, EN_UPDATE);
// PORTPORT: Note the symantics of IsWindowVisible and _IsWindowVisible are
// slightly different.
if (IsWindowVisible(ped->hwnd))
{
HDC hdc;
hdc = Edit_GetDC(ped, FALSE);
if (!EditSL_ScrollText(ped, hdc))
{
EditSL_DrawText(ped, hdc, 0);
}
Edit_ReleaseDC(ped, hdc, FALSE);
}
Edit_NotifyParent(ped, EN_CHANGE);
NotifyWinEvent(EVENT_OBJECT_VALUECHANGE, ped->hwnd, OBJID_CLIENT, INDEXID_CONTAINER);
}
//---------------------------------------------------------------------------//
//
// EditSL_Char AorW
//
// Handles character input
//
VOID EditSL_Char(PED ped, DWORD keyValue)
{
HDC hdc;
WCHAR keyPress;
BOOL updateText = FALSE;
HWND hwndSave = ped->hwnd;
int InsertTextLen = 1;
int DBCSkey;
if (ped->fAnsi)
{
keyPress = LOBYTE(keyValue);
}
else
{
keyPress = LOWORD(keyValue);
}
if (ped->fMouseDown || (ped->fReadOnly && keyPress != 3))
{
//
// Don't do anything if we are in the middle of a mousedown deal or if
// this is a read only edit control, with exception of allowing
// ctrl-C in order to copy to the clipboard.
//
return;
}
if (g_fIMMEnabled)
{
Edit_InOutReconversionMode(ped, FALSE);
}
switch (keyPress)
{
case VK_BACK:
DeleteSelection:
if (Edit_DeleteText(ped))
{
updateText = TRUE;
}
break;
default:
if (keyPress >= TEXT(' '))
{
//
// If this is in [a-z],[A-Z] and we are an ES_NUMBER
// edit field, bail.
//
if (ped->f40Compat && (GET_STYLE(ped) & ES_NUMBER))
{
if (!Edit_IsCharNumeric(ped, keyPress))
{
Edit_ShowBalloonTipWrap(ped->hwnd, IDS_NUMERIC_TITLE, IDS_NUMERIC_MSG, TTI_ERROR);
goto IllegalChar;
}
}
goto DeleteSelection;
}
break;
}
switch (keyPress)
{
case 3:
//
// CTRL-C Copy
//
SendMessage(ped->hwnd, WM_COPY, 0, 0L);
return;
case VK_BACK:
//
// Delete any selected text or delete character left if no sel
//
if (!updateText && ped->ichMinSel)
{
//
// There was no selection to delete so we just delete character
// left if available
//
// Calling PrevIch rather than just doing a decrement for VK_BACK
//
ped->ichMinSel = Edit_PrevIch( ped, NULL, ped->ichMinSel);
Edit_DeleteText(ped);
updateText = TRUE;
}
break;
case 22:
//
// CTRL-V Paste
//
SendMessage(ped->hwnd, WM_PASTE, 0, 0L);
return;
case 24:
//
// CTRL-X Cut
//
if (ped->ichMinSel == ped->ichMaxSel)
{
goto IllegalChar;
}
SendMessage(ped->hwnd, WM_CUT, 0, 0L);
return;
case 26:
//
// CTRL-Z Undo
//
SendMessage(ped->hwnd, EM_UNDO, 0, 0L);
return;
case VK_RETURN:
case VK_ESCAPE:
//
// If this is an edit control for a combobox and the dropdown list
// is visible, forward it up to the combo.
//
if (ped->listboxHwnd && SendMessage(ped->hwndParent, CB_GETDROPPEDSTATE, 0, 0L))
{
SendMessage(ped->hwndParent, WM_KEYDOWN, (WPARAM)keyPress, 0L);
}
else
{
goto IllegalChar;
}
return;
default:
if (keyPress >= 0x1E)
{
//
// 1E,1F are unicode block and segment separators
//
//
// Hide the cursor if typing, if the mouse is captured, do not mess with this
// as it is going to desapear forever (no WM_SETCURSOR is sent to restore it
// at the first mouse-move)
// MCostea #166951
//
if (GetCapture() == NULL)
{
SetCursor(NULL);
}
if (g_fDBCSEnabled && ped->fAnsi && (Edit_IsDBCSLeadByte(ped,(BYTE)keyPress)))
{
if ((DBCSkey = DbcsCombine(ped->hwnd, keyPress)) != 0 &&
EditSL_InsertText(ped,(LPSTR)&DBCSkey, 2) == 2)
{
InsertTextLen = 2;
updateText = TRUE;
}
else
{
MessageBeep(0);
}
}
else
{
InsertTextLen = 1;
if (EditSL_InsertText(ped, (LPSTR)&keyPress, 1))
{
updateText = TRUE;
}
else
{
//
// Beep. Since we couldn't add the text
//
MessageBeep(0);
}
}
}
else
{
IllegalChar:
MessageBeep(0);
}
if (!IsWindow(hwndSave))
{
return;
}
break;
}
if (updateText)
{
//
// Dirty flag (ped->fDirty) was set when we inserted text
//
Edit_NotifyParent(ped, EN_UPDATE);
hdc = Edit_GetDC(ped, FALSE);
if (!EditSL_ScrollText(ped, hdc))
{
if (ped->format == ES_LEFT)
{
//
// Call EditSL_DrawText with correct ichStart
//
EditSL_DrawText(ped, hdc, max(0, (int)(ped->ichCaret - InsertTextLen - ped->wMaxNegCcharPos)));
}
else
{
//
// We can't just draw from ichStart because string may have
// shifted because of alignment.
//
EditSL_DrawText(ped, hdc, 0);
}
}
Edit_ReleaseDC(ped, hdc, FALSE);
Edit_NotifyParent(ped, EN_CHANGE);
NotifyWinEvent(EVENT_OBJECT_VALUECHANGE, ped->hwnd, OBJID_CLIENT, INDEXID_CONTAINER);
}
}
//---------------------------------------------------------------------------//
//
// EditSL_MoveSelectionRestricted AorW
//
// Moves the selection like Edit_MoveSelection, but also obeys limitations
// imposed by some languages such as Thai, where the cursor cannot stop
// between a character and it's attached vowel or tone marks.
//
// Only called if the language pack is loaded.
//
ICH EditSL_MoveSelectionRestricted(PED ped, ICH ich, BOOL fLeft)
{
PSTR pText;
HDC hdc;
ICH ichResult;
pText = Edit_Lock(ped);
hdc = Edit_GetDC(ped, TRUE);
ichResult = ped->pLpkEditCallout->EditMoveSelection((PED0)ped, hdc, pText, ich, fLeft);
Edit_ReleaseDC(ped, hdc, TRUE);
Edit_Unlock(ped);
return ichResult;
}
//---------------------------------------------------------------------------//
void EditSL_CheckCapsLock(PED ped)
{
if ((GetKeyState(VK_CAPITAL) & 0x0001) != 0)
{
Edit_ShowBalloonTipWrap(ped->hwnd, IDS_CAPSLOCK_TITLE, IDS_CAPSLOCK_MSG, TTI_WARNING);
}
}
//---------------------------------------------------------------------------//
//
// EditSL_KeyDown AorW
//
// Handles cursor movement and other VIRT KEY stuff. keyMods allows
// us to make EditSL_KeyDownHandler calls and specify if the modifier keys (shift
// and control) are up or down. This is useful for imnplementing the
// cut/paste/clear messages for single line edit controls. If keyMods == 0,
// we get the keyboard state using GetKeyState(VK_SHIFT) etc. Otherwise, the
// bits in keyMods define the state of the shift and control keys.
//
VOID EditSL_KeyDown(PED ped, DWORD virtKeyCode, int keyMods)
{
HDC hdc;
//
// Variables we will use for redrawing the updated text
//
ICH newMaxSel = ped->ichMaxSel;
ICH newMinSel = ped->ichMinSel;
//
// Flags for drawing the updated text
//
BOOL updateText = FALSE;
BOOL changeSelection = FALSE; // new selection is specified by
// newMinSel, newMaxSel
//
// Comparisons we do often
//
BOOL MinEqMax = (newMaxSel == newMinSel);
BOOL MinEqCar = (ped->ichCaret == newMinSel);
BOOL MaxEqCar = (ped->ichCaret == newMaxSel);
//
// State of shift and control keys.
//
int scState;
//
// Combo box support
//
BOOL fIsListVisible;
BOOL fIsExtendedUI;
if (ped->fMouseDown)
{
//
// If we are in the middle of a mouse down handler, then don't do
// anything. ie. ignore keyboard input.
//
return;
}
if (ped->hwndBalloon)
{
Edit_HideBalloonTip(ped->hwnd);
}
scState = Edit_GetModKeys(keyMods);
switch (virtKeyCode)
{
case VK_UP:
if ( ped->listboxHwnd )
{
//
// Handle Combobox support
//
fIsExtendedUI = (BOOL)SendMessage(ped->hwndParent, CB_GETEXTENDEDUI, 0, 0);
fIsListVisible = (BOOL)SendMessage(ped->hwndParent, CB_GETDROPPEDSTATE, 0, 0);
if (!fIsListVisible && fIsExtendedUI)
{
DropExtendedUIListBox:
//
// Since an extendedui combo box doesn't do anything on f4, we
// turn off the extended ui, send the f4 to drop, and turn it
// back on again.
//
SendMessage(ped->hwndParent, CB_SETEXTENDEDUI, 0, 0);
SendMessage(ped->listboxHwnd, WM_KEYDOWN, VK_F4, 0);
SendMessage(ped->hwndParent, CB_SETEXTENDEDUI, 1, 0);
return;
}
else
{
goto SendKeyToListBox;
}
}
//
// else fall through
//
case VK_LEFT:
//
// If the caret isn't at the beginning, we can move left
//
if (ped->ichCaret)
{
//
// Get new caret pos.
//
if (scState & CTRLDOWN)
{
//
// Move caret word left
//
Edit_Word(ped, ped->ichCaret, TRUE, &ped->ichCaret, NULL);
}
else
{
//
// Move caret char left
//
if (ped->pLpkEditCallout)
{
ped->ichCaret = EditSL_MoveSelectionRestricted(ped, ped->ichCaret, TRUE);
}
else
{
ped->ichCaret = Edit_PrevIch(ped,NULL,ped->ichCaret);
}
}
//
// Get new selection
//
if (scState & SHFTDOWN)
{
if (MaxEqCar && !MinEqMax)
{
//
// Reduce selection
//
newMaxSel = ped->ichCaret;
UserAssert(newMinSel == ped->ichMinSel);
}
else
{
//
// Extend selection
//
newMinSel = ped->ichCaret;
}
}
else
{
//
// Clear selection
//
newMaxSel = newMinSel = ped->ichCaret;
}
changeSelection = TRUE;
}
else
{
//
// If the user tries to move left and we are at the 0th
// character and there is a selection, then cancel the
// selection.
//
if ( (ped->ichMaxSel != ped->ichMinSel) && !(scState & SHFTDOWN) )
{
changeSelection = TRUE;
newMaxSel = newMinSel = ped->ichCaret;
}
}
break;
case VK_DOWN:
if (ped->listboxHwnd)
{
//
// Handle Combobox support
//
fIsExtendedUI = (BOOL)SendMessage(ped->hwndParent, CB_GETEXTENDEDUI, 0, 0);
fIsListVisible = (BOOL)SendMessage(ped->hwndParent, CB_GETDROPPEDSTATE, 0, 0);
if (!fIsListVisible && fIsExtendedUI)
{
goto DropExtendedUIListBox;
}
else
{
goto SendKeyToListBox;
}
}
//
// else fall through
//
case VK_RIGHT:
//
// If the caret isn't at the end, we can move right.
//
if (ped->ichCaret < ped->cch)
{
//
// Get new caret pos.
//
if (scState & CTRLDOWN)
{
//
// Move caret word right
//
Edit_Word(ped, ped->ichCaret, FALSE, NULL, &ped->ichCaret);
}
else
{
//
// Move caret char right
//
if (ped->pLpkEditCallout)
{
ped->ichCaret = EditSL_MoveSelectionRestricted(ped, ped->ichCaret, FALSE);
}
else
{
ped->ichCaret = Edit_NextIch(ped,NULL,ped->ichCaret);
}
}
//
// Get new selection.
//
if (scState & SHFTDOWN)
{
if (MinEqCar && !MinEqMax)
{
//
// Reduce selection
//
newMinSel = ped->ichCaret;
UserAssert(newMaxSel == ped->ichMaxSel);
}
else
{
//
// Extend selection
//
newMaxSel = ped->ichCaret;
}
}
else
{
//
// Clear selection
//
newMaxSel = newMinSel = ped->ichCaret;
}
changeSelection = TRUE;
}
else
{
//
// If the user tries to move right and we are at the last
// character and there is a selection, then cancel the
// selection.
//
if ( (ped->ichMaxSel != ped->ichMinSel) &&
!(scState & SHFTDOWN) )
{
newMaxSel = newMinSel = ped->ichCaret;
changeSelection = TRUE;
}
}
break;
case VK_HOME:
//
// Move caret to top.
//
ped->ichCaret = 0;
//
// Update selection.
//
if (scState & SHFTDOWN)
{
if (MaxEqCar && !MinEqMax)
{
//
// Reduce selection
//
newMinSel = ped->ichCaret;
newMaxSel = ped->ichMinSel;
}
else
{
//
// Extend selection
//
newMinSel = ped->ichCaret;
}
}
else
{
//
// Clear selection
//
newMaxSel = newMinSel = ped->ichCaret;
}
changeSelection = TRUE;
break;
case VK_END:
//
// Move caret to end.
//
ped->ichCaret = ped->cch;
//
// Update selection.
//
newMaxSel = ped->ichCaret;
if (scState & SHFTDOWN)
{
if (MinEqCar && !MinEqMax)
{
//
// Reduce selection
//
newMinSel = ped->ichMaxSel;
}
}
else
{
//
// Clear selection
//
newMinSel = ped->ichCaret;
}
changeSelection = TRUE;
break;
case VK_DELETE:
if (ped->fReadOnly)
{
break;
}
switch (scState)
{
case NONEDOWN:
//
// Clear selection. If no selection, delete (clear) character
// right.
//
if ((ped->ichMaxSel < ped->cch) && (ped->ichMinSel == ped->ichMaxSel))
{
//
// Move cursor forwards and simulate a backspace.
//
if (ped->pLpkEditCallout)
{
ped->ichMinSel = ped->ichCaret;
ped->ichMaxSel = ped->ichCaret = EditSL_MoveSelectionRestricted(ped, ped->ichCaret, FALSE);
}
else
{
ped->ichCaret = Edit_NextIch(ped,NULL,ped->ichCaret);
ped->ichMaxSel = ped->ichMinSel = ped->ichCaret;
}
EditSL_Char(ped, (UINT)VK_BACK);
}
if (ped->ichMinSel != ped->ichMaxSel)
{
EditSL_Char(ped, (UINT)VK_BACK);
}
break;
case SHFTDOWN:
//
// Send ourself a WM_CUT message if a selection exists.
// Otherwise, delete the left character.
//
if (ped->ichMinSel == ped->ichMaxSel)
{
UserAssert(!ped->fEatNextChar);
EditSL_Char(ped, VK_BACK);
}
else
{
SendMessage(ped->hwnd, WM_CUT, 0, 0L);
}
break;
case CTRLDOWN:
//
// Delete to end of line if no selection else delete (clear)
// selection.
//
if ((ped->ichMaxSel < ped->cch) && (ped->ichMinSel == ped->ichMaxSel))
{
//
// Move cursor to end of line and simulate a backspace.
//
ped->ichMaxSel = ped->ichCaret = ped->cch;
}
if (ped->ichMinSel != ped->ichMaxSel)
{
EditSL_Char(ped, (UINT)VK_BACK);
}
break;
}
//
// No need to update text or selection since BACKSPACE message does it
// for us.
//
break;
case VK_INSERT:
switch (scState)
{
case CTRLDOWN:
//
// Copy current selection to clipboard
//
SendMessage(ped->hwnd, WM_COPY, 0, 0);
break;
case SHFTDOWN:
SendMessage(ped->hwnd, WM_PASTE, 0, 0L);
break;
}
break;
case VK_HANJA:
//
// VK_HANJA support
//
if ( HanjaKeyHandler( ped ) )
{
changeSelection = TRUE;
newMinSel = ped->ichCaret;
newMaxSel = ped->ichCaret + (ped->fAnsi ? 2 : 1);
}
break;
case VK_CAPITAL:
if (GET_STYLE(ped) & ES_PASSWORD)
{
EditSL_CheckCapsLock(ped);
}
break;
case VK_F4:
case VK_PRIOR:
case VK_NEXT:
//
// Send keys to the listbox if we are a part of a combo box. This
// assumes the listbox ignores keyup messages which is correct right
// now.
//
SendKeyToListBox:
if (ped->listboxHwnd)
{
//
// Handle Combobox support
//
SendMessage(ped->listboxHwnd, WM_KEYDOWN, virtKeyCode, 0L);
return;
}
}
if (changeSelection || updateText)
{
hdc = Edit_GetDC(ped, FALSE);
//
// Scroll if needed
//
EditSL_ScrollText(ped, hdc);
if (changeSelection)
{
EditSL_ChangeSelection(ped, hdc, newMinSel, newMaxSel);
}
if (updateText)
{
EditSL_DrawText(ped, hdc, 0);
}
Edit_ReleaseDC(ped, hdc, FALSE);
if (updateText)
{
Edit_NotifyParent(ped, EN_CHANGE);
NotifyWinEvent(EVENT_OBJECT_VALUECHANGE, ped->hwnd, OBJID_CLIENT, INDEXID_CONTAINER);
}
}
}
//---------------------------------------------------------------------------//
//
// EditSL_MouseToIch AorW
//
// Returns the closest cch to where the mouse point is.
//
ICH EditSL_MouseToIch(PED ped, HDC hdc, LPPOINT mousePt)
{
PSTR pText;
int width = mousePt->x;
int lastHighWidth, lastLowWidth;
SIZE size;
ICH cch;
ICH cchLo, cchHi;
LPSTR lpText;
FnGetTextExtentPoint pGetTextExtentPoint;
if (ped->pLpkEditCallout)
{
pText = Edit_Lock(ped);
cch = ped->pLpkEditCallout->EditMouseToIch((PED0)ped, hdc, pText, ped->cch, width);
Edit_Unlock(ped);
return cch;
}
if (width <= ped->rcFmt.left)
{
//
// Return either the first non visible character or return 0 if at
// beginning of text
//
if (ped->ichScreenStart)
{
return (ped->ichScreenStart - 1);
}
else
{
return 0;
}
}
if (width > ped->rcFmt.right)
{
pText = Edit_Lock(ped);
//
// Return last char in text or one plus the last char visible
//
cch = Edit_CchInWidth(ped, hdc,
(LPSTR)(pText + ped->ichScreenStart * ped->cbChar),
ped->cch - ped->ichScreenStart, ped->rcFmt.right -
ped->rcFmt.left, TRUE) + ped->ichScreenStart;
//
// This is marked as JAPAN in Win31J. But it should be a DBCS
// issue. LiZ -- 5/5/93
// We must check DBCS Lead byte. Because Edit_AdjustIch() pick up Prev Char.
// 1993.3.9 by yutakas
//
if (ped->fAnsi && ped->fDBCS)
{
if (cch >= ped->cch)
{
cch = ped->cch;
}
else
{
if (Edit_IsDBCSLeadByte(ped,*(pText+cch)))
{
cch += 2;
}
else
{
cch ++;
}
}
Edit_Unlock(ped);
return cch;
}
else
{
Edit_Unlock(ped);
if (cch >= ped->cch)
{
return (ped->cch);
}
else
{
return (cch + 1);
}
}
}
if (ped->format != ES_LEFT)
{
width -= EditSL_CalcXOffsetSpecial(ped, hdc, ped->ichScreenStart);
}
//
// Check if password hidden chars are being used.
//
if (ped->charPasswordChar)
{
return min( (DWORD)( (width - ped->rcFmt.left) / ped->cPasswordCharWidth),
ped->cch);
}
if (!ped->cch)
{
return 0;
}
pText = Edit_Lock(ped);
lpText = pText + ped->ichScreenStart * ped->cbChar;
pGetTextExtentPoint = ped->fAnsi ? (FnGetTextExtentPoint)GetTextExtentPointA
: (FnGetTextExtentPoint)GetTextExtentPointW;
width -= ped->rcFmt.left;
//
// If the user clicked past the end of the text, return the last character
//
cchHi = ped->cch - ped->ichScreenStart;
pGetTextExtentPoint(hdc, lpText, cchHi, &size);
if (size.cx <= width)
{
cch = cchHi;
goto edAdjust;
}
//
// Initialize Binary Search Bounds
//
cchLo = 0;
cchHi ++;
lastLowWidth = 0;
lastHighWidth = size.cx;
//
// Binary search for closest char
//
while (cchLo < cchHi - 1)
{
cch = (cchHi + cchLo) / 2;
pGetTextExtentPoint(hdc, lpText, cch, &size);
if (size.cx <= width)
{
cchLo = cch;
lastLowWidth = size.cx;
}
else
{
cchHi = cch;
lastHighWidth = size.cx;
}
}
//
// When the while ends, you can't know the exact position.
// Try to see if the mouse pointer was on the farest half
// of the char we got and if so, adjust cch.
//
if (cchLo == cch)
{
//
// Need to compare with lastHighWidth
//
if ((lastHighWidth - width) < (width - size.cx))
{
cch++;
}
}
else
{
//
// Need to compare with lastLowWidth
//
if ((width - lastLowWidth) < (size.cx - width))
{
cch--;
}
}
edAdjust:
//
// Avoid to point the intermediate of double byte character
//
cch = Edit_AdjustIch(ped, pText, cch + ped->ichScreenStart);
Edit_Unlock(ped);
return cch;
}
//---------------------------------------------------------------------------//
VOID EditSL_MouseMotion(PED ped, UINT message, UINT virtKeyDown, LPPOINT mousePt)
{
DWORD selectionl;
DWORD selectionh;
BOOL changeSelection;
ICH newMaxSel;
ICH newMinSel;
HDC hdc;
ICH mouseIch;
LPSTR pText;
changeSelection = FALSE;
newMinSel = ped->ichMinSel;
newMaxSel = ped->ichMaxSel;
hdc = Edit_GetDC(ped, FALSE);
mouseIch = EditSL_MouseToIch(ped, hdc, mousePt);
switch (message)
{
case WM_LBUTTONDBLCLK:
//
// if shift key is down, extend selection to word we double clicked on
// else clear current selection and select word.
//
// in DBCS, we have different word breaking. LiZ -- 5/5/93
// In Hangeul Environment we use word selection feature because Hangeul
// use SPACE as word break
//
if (ped->fAnsi && ped->fDBCS)
{
pText = Edit_Lock(ped) + mouseIch;
Edit_Word(ped, mouseIch,
(Edit_IsDBCSLeadByte(ped,*pText) && mouseIch < ped->cch) ? FALSE : TRUE,
&selectionl, &selectionh);
Edit_Unlock(ped);
}
else
{
Edit_Word(ped, mouseIch, (mouseIch) ? TRUE : FALSE, &selectionl, &selectionh);
}
if (!(virtKeyDown & MK_SHIFT))
{
//
// If shift key isn't down, move caret to mouse point and clear
// old selection
//
newMinSel = selectionl;
newMaxSel = ped->ichCaret = selectionh;
}
else
{
//
// Shiftkey is down so we want to maintain the current selection
// (if any) and just extend or reduce it
//
if (ped->ichMinSel == ped->ichCaret)
{
newMinSel = ped->ichCaret = selectionl;
Edit_Word(ped, newMaxSel, TRUE, &selectionl, &selectionh);
}
else
{
newMaxSel = ped->ichCaret = selectionh;
Edit_Word(ped, newMinSel, FALSE, &selectionl, &selectionh);
}
ped->ichMaxSel = ped->ichCaret;
}
ped->ichStartMinSel = selectionl;
ped->ichStartMaxSel = selectionh;
goto InitDragSelect;
case WM_MOUSEMOVE:
//
// We know the mouse button's down -- otherwise the OPTIMIZE
// test would've failed in EditSL_WndProc and never called
//
changeSelection = TRUE;
//
// Extend selection, move caret word right
//
if (ped->ichStartMinSel || ped->ichStartMaxSel)
{
//
// We're in WORD SELECT mode
//
BOOL fReverse = (mouseIch <= ped->ichStartMinSel);
Edit_Word(ped, mouseIch, !fReverse, &selectionl, &selectionh);
if (fReverse)
{
newMinSel = ped->ichCaret = selectionl;
newMaxSel = ped->ichStartMaxSel;
}
else
{
newMinSel = ped->ichStartMinSel;
newMaxSel = ped->ichCaret = selectionh;
}
}
else if ((ped->ichMinSel == ped->ichCaret) &&
(ped->ichMinSel != ped->ichMaxSel))
{
//
// Reduce selection extent
//
newMinSel = ped->ichCaret = mouseIch;
}
else
{
// Extend selection extent
newMaxSel = ped->ichCaret=mouseIch;
}
break;
case WM_LBUTTONDOWN:
//
// If we currently don't have the focus yet, try to get it.
//
if (!ped->fFocus)
{
if (!ped->fNoHideSel)
{
//
// Clear the selection before setting the focus so that we
// don't get refresh problems and flicker. Doesn't matter
// since the mouse down will end up changing it anyway.
//
ped->ichMinSel = ped->ichMaxSel = ped->ichCaret;
}
SetFocus(ped->hwnd);
//
// BOGUS
// (1) We should see if SetFocus() succeeds.
// (2) We should ignore mouse messages if the first window
// ancestor with a caption isn't "active."
//
// If we are part of a combo box, then this is the first time
// the edit control is getting the focus so we just want to
// highlight the selection and we don't really want to position
// the caret.
//
if (ped->listboxHwnd)
{
break;
}
//
// We yield at SetFocus -- text might have changed at that point
// update selection and caret info accordingly
// FIX for bug # 11743 -- JEFFBOG 8/23/91
//
newMaxSel = ped->ichMaxSel;
newMinSel = ped->ichMinSel;
mouseIch = min(mouseIch, ped->cch);
}
if (ped->fFocus)
{
//
// Only do this if we have the focus since a clever app may not
// want to give us the focus at the SetFocus call above.
//
if (!(virtKeyDown & MK_SHIFT))
{
//
// If shift key isn't down, move caret to mouse point and
// clear old selection
//
newMinSel = newMaxSel = ped->ichCaret = mouseIch;
}
else
{
//
// Shiftkey is down so we want to maintain the current
// selection (if any) and just extend or reduce it
//
if (ped->ichMinSel == ped->ichCaret)
{
newMinSel = ped->ichCaret = mouseIch;
}
else
{
newMaxSel = ped->ichCaret = mouseIch;
}
}
ped->ichStartMinSel = ped->ichStartMaxSel = 0;
InitDragSelect:
ped->fMouseDown = FALSE;
SetCapture(ped->hwnd);
ped->fMouseDown = TRUE;
changeSelection = TRUE;
}
break;
case WM_LBUTTONUP:
if (ped->fMouseDown)
{
ped->fMouseDown = FALSE;
ReleaseCapture();
}
break;
}
if (changeSelection)
{
EditSL_ScrollText(ped,hdc);
EditSL_ChangeSelection(ped, hdc, newMinSel, newMaxSel);
}
Edit_ReleaseDC(ped, hdc, FALSE);
}
//---------------------------------------------------------------------------//
//
// EditSL_Paint AorW
//
// Handles painting of the edit control window. Draws the border if
// necessary and draws the text in its current state.
//
VOID EditSL_Paint(PED ped, HDC hdc)
{
RECT rcEdit;
HWND hwnd = ped->hwnd;
HBRUSH hBrushRemote = NULL;
BOOL fNeedDelete = FALSE;
HANDLE hOldFont;
//
// Had to put in hide/show carets. The first one needs to be done before
// beginpaint to correctly paint the caret if part is in the update region
// and part is out. The second is for 1.03 compatibility. It breaks
// micrografix's worksheet edit control if not there.
//
HideCaret(hwnd);
if (IsWindowVisible(hwnd))
{
CCDBUFFER db;
//
// Erase the background since we don't do it in the erasebkgnd message.
//
GetClientRect(hwnd, &rcEdit);
hdc = CCBeginDoubleBuffer(hdc, &rcEdit, &db);
#ifdef _USE_DRAW_THEME_TEXT_
if (!ped->hTheme)
#endif // _USE_DRAW_THEME_TEXT_
{
hBrushRemote = Edit_GetBrush(ped, hdc, &fNeedDelete);
if (hBrushRemote)
{
FillRect(hdc, &rcEdit, hBrushRemote);
if (fNeedDelete)
{
DeleteObject(hBrushRemote);
}
}
if (ped->fFlatBorder)
{
DrawFrame(hdc, &rcEdit, 1, DF_WINDOWFRAME);
}
}
#ifdef _USE_DRAW_THEME_TEXT_
else
{
HRESULT hr;
INT iStateId = Edit_GetStateId(ped);
hr = DrawThemeBackground(ped->hTheme, hdc, EP_EDITTEXT, iStateId, &rcEdit, 0);
}
#endif // _USE_DRAW_THEME_TEXT_
if (ped->hFont != NULL)
{
//
// We have to select in the font since this may be a subclassed dc
// or a begin paint dc which hasn't been initialized with out fonts
// like Edit_GetDC does.
//
hOldFont = SelectObject(hdc, ped->hFont);
}
EditSL_DrawText(ped, hdc, 0);
if (ped->hFont != NULL && hOldFont != NULL)
{
SelectObject(hdc, hOldFont);
}
CCEndDoubleBuffer(&db);
}
ShowCaret(hwnd);
}
//---------------------------------------------------------------------------//
//
// EditSL_SetFocus AorW
//
// Gives the edit control the focus and notifies the parent
// EN_SETFOCUS.
//
VOID EditSL_SetFocus(PED ped)
{
if (!ped->fFocus)
{
HDC hdc;
UINT cxCaret;
ped->fFocus = TRUE;
InvalidateRect(ped->hwnd, NULL, TRUE);
//
// We don't want to muck with the caret since it isn't created.
//
hdc = Edit_GetDC(ped, TRUE);
//
// Show the current selection if necessary.
//
if (!ped->fNoHideSel)
{
EditSL_DrawText(ped, hdc, 0);
}
//
// Create the caret
//
SystemParametersInfo(SPI_GETCARETWIDTH, 0, (LPVOID)&cxCaret, 0);
if (ped->pLpkEditCallout)
{
ped->pLpkEditCallout->EditCreateCaret ((PED0)ped, hdc, cxCaret,
ped->lineHeight, 0);
}
else
{
CreateCaret(ped->hwnd, (HBITMAP)NULL, cxCaret, ped->lineHeight);
}
EditSL_SetCaretPosition(ped, hdc);
Edit_ReleaseDC(ped, hdc, TRUE);
ShowCaret(ped->hwnd);
//
// check the capslock key
//
if (GET_STYLE(ped) & ES_PASSWORD)
{
EditSL_CheckCapsLock(ped);
}
}
//
// Notify parent we have the focus
//
Edit_NotifyParent(ped, EN_SETFOCUS);
}
//---------------------------------------------------------------------------//
//
// EditSL_KillFocus
//
// The edit control loses the focus and notifies the parent via EN_KILLFOCUS.
//
void EditSL_KillFocus(PED ped, HWND newFocusHwnd)
{
HWND hwnd = ped->hwnd;
if (ped->fFocus)
{
DestroyCaret();
ped->fFocus = FALSE;
//
// Do this only if we still have the focus. But we always notify the
// parent that we lost the focus whether or not we originally had the
// focus.
//
// Hide the current selection if needed
//
#ifdef _USE_DRAW_THEME_TEXT_
if ((!ped->fNoHideSel && (ped->ichMinSel != ped->ichMaxSel)) || ped->hTheme)
#else
if ((!ped->fNoHideSel && (ped->ichMinSel != ped->ichMaxSel)))
#endif // _USE_DRAW_THEME_TEXT_
{
InvalidateRect(hwnd, NULL, FALSE);
}
}
//
// If we aren't a combo box, notify parent that we lost the focus.
//
if (!ped->listboxHwnd)
{
Edit_NotifyParent(ped, EN_KILLFOCUS);
}
else
{
//
// This editcontrol is part of a combo box and is losing the focus. If
// the focus is NOT being sent to another control in the combo box
// window, then it means the combo box is losing the focus. So we will
// notify the combo box of this fact.
//
if ((newFocusHwnd == NULL) || (!IsChild(ped->hwndParent, newFocusHwnd)))
{
//
// Excel has a slaker in it's midst. They're not using our combo
// boxes, but they still expect to get all the internal messages
// that we give to OUR comboboxes. And they expect them to be at
// the same offset from WM_USER as they were in 3.1.
// (JEFFBOG - 01/26/94)
//
// Focus is being sent to a window which is not a child of the combo
// box window which implies that the combo box is losing the focus.
// Send a message to the combo box informing him of this fact so
// that he can clean up...
//
SendMessage(ped->hwndParent, CBEC_KILLCOMBOFOCUS, 0, 0L);
}
}
//
// If we're still valid, invalidate to cause a redraw. It's common
// for some controls be destroyed after losing focus.
//
if ( IsWindow(hwnd) )
{
InvalidateRect(hwnd, NULL, FALSE);
}
}
//---------------------------------------------------------------------------//
//
// EditSL_Paste()
//
// Does actual text paste and update.
//
VOID EditSL_Paste(PED ped)
{
HDC hdc;
//
// Insert contents of clipboard, after unhilighting current selection
// and deleting it.
//
Edit_DeleteText(ped);
EditSL_PasteText(ped);
//
// Update display
//
Edit_NotifyParent(ped, EN_UPDATE);
hdc = Edit_GetDC(ped,FALSE);
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);
NotifyWinEvent(EVENT_OBJECT_VALUECHANGE, ped->hwnd, OBJID_CLIENT, INDEXID_CONTAINER);
}
//---------------------------------------------------------------------------//
//
// EditSL_Create
//
// Creates the edit control for the window hwnd by allocating memory
// as required from the application's heap. Notifies parent if no memory
// error (after cleaning up if needed). Returns TRUE if no error else return s
// -1.
//
LONG EditSL_Create(PED ped, LPCREATESTRUCT lpCreateStruct)
{
LPSTR lpWindowText;
LONG windowStyle = GET_STYLE(ped);
//
// Do the standard creation stuff
//
if (!Edit_Create(ped, windowStyle))
{
return -1;
}
//
// Single lines always have no undo and 1 line
//
ped->cLines = 1;
ped->undoType = UNDO_NONE;
//
// Check if this edit control is part of a combobox and get a pointer to the
// combobox structure.
//
if (windowStyle & ES_COMBOBOX)
{
ped->listboxHwnd = GetDlgItem(lpCreateStruct->hwndParent, CBLISTBOXID);
}
//
// Set the default font to be the system font.
//
if ( !Edit_SetFont(ped, NULL, FALSE) )
{
// If setting the font fails, our textmetrics can potentially be left
// unitialize. Fail to create the control.
return -1;
}
//
// Set the window text if needed. Return false if we can't set the text
// SLSetText notifies the parent in case there is a no memory error.
//
#if 0
if ((ULONG_PTR)lpCreateStruct->lpszName > gHighestUserAddress)
{
lpWindowText = REBASEPTR(ped->pwnd, (PVOID)lpCreateStruct->lpszName);
}
else
#endif
{
lpWindowText = (LPSTR)lpCreateStruct->lpszName;
}
if ((lpWindowText != NULL)
&& !IsEmptyString(lpWindowText, ped->fAnsi)
&& !Edit_SetEditText(ped, lpWindowText))
{
return -1;
}
if (windowStyle & ES_PASSWORD)
{
LOGFONT lfFont = {0};
LoadString(HINST_THISDLL, IDS_PASSWORDCHARFONT, lfFont.lfFaceName, ARRAYSIZE(lfFont.lfFaceName));
lfFont.lfWeight = FW_NORMAL;
lfFont.lfCharSet = DEFAULT_CHARSET;
ped->hFontPassword = CreateFontIndirect(&lfFont);
if (ped->hFontPassword && Edit_SetFont(ped, ped->hFontPassword, FALSE))
{
WCHAR szChar[10];
UINT uChar;
LoadString(HINST_THISDLL, IDS_PASSWORDCHAR, szChar, ARRAYSIZE(szChar));
uChar = StrToInt(szChar);
Edit_SetPasswordCharHandler(ped, uChar);
}
else
{
Edit_SetPasswordCharHandler(ped, (UINT)'*');
}
}
//
// Since memory cleared to 0 when allocated, this should still be NULL
//
ASSERT(ped->pszCueBannerText == NULL);
return TRUE;
}
//---------------------------------------------------------------------------//
//
// EditSL_Undo AorW
//
// Handles UNDO for single line edit controls.
//
BOOL EditSL_Undo(PED ped)
{
PBYTE hDeletedText = ped->hDeletedText;
BOOL fDelete = (BOOL)(ped->undoType & UNDO_DELETE);
ICH cchDeleted = ped->cchDeleted;
ICH ichDeleted = ped->ichDeleted;
BOOL fUpdate = FALSE;
if (ped->undoType == UNDO_NONE)
{
//
// No undo...
//
return FALSE;
}
ped->hDeletedText = NULL;
ped->cchDeleted = 0;
ped->ichDeleted = (ICH)-1;
ped->undoType &= ~UNDO_DELETE;
if (ped->undoType == UNDO_INSERT)
{
ped->undoType = UNDO_NONE;
//
// Set the selection to the inserted text
//
EditSL_SetSelection(ped, ped->ichInsStart, ped->ichInsEnd);
ped->ichInsStart = ped->ichInsEnd = (ICH)-1;
//
// Delete the selected text and save it in undo buff.
// Call Edit_DeleteText() instead of sending a VK_BACK message
// which results in an EN_UPDATE notification send even before
// we insert the deleted chars. This results in Bug #6610.
// Fix for Bug #6610 -- SANKAR -- 04/19/91 --
//
if (Edit_DeleteText(ped))
{
//
// Text was deleted -- flag for update and clear selection
//
fUpdate = TRUE;
EditSL_SetSelection(ped, ichDeleted, ichDeleted);
}
}
if (fDelete)
{
HWND hwndSave = ped->hwnd; // Used for validation.
//
// Insert deleted chars. Set the selection to the inserted text.
//
EditSL_SetSelection(ped, ichDeleted, ichDeleted);
EditSL_InsertText(ped, hDeletedText, cchDeleted);
GlobalFree(hDeletedText);
if (!IsWindow(hwndSave))
{
return FALSE;
}
EditSL_SetSelection(ped, ichDeleted, ichDeleted + cchDeleted);
fUpdate = TRUE;
}
if (fUpdate)
{
//
// If we have something to update, send EN_UPDATE before and
// EN_CHANGE after the actual update.
// A part of the fix for Bug #6610 -- SANKAR -- 04/19/91 --
//
Edit_NotifyParent(ped, EN_UPDATE);
if (IsWindowVisible(ped->hwnd))
{
Edit_InvalidateClient(ped, FALSE);
}
Edit_NotifyParent(ped, EN_CHANGE);
NotifyWinEvent(EVENT_OBJECT_VALUECHANGE, ped->hwnd, OBJID_CLIENT, INDEXID_CONTAINER);
}
return TRUE;
}
//---------------------------------------------------------------------------//
//
// EditSL_SetCueBanner (Unicode Only)
//
// Handles setting the cue banner text for an edit control.
//
BOOL EditSL_SetCueBanner(PED ped, LPCWSTR pszBanner)
{
BOOL retVal = FALSE;
if (pszBanner != NULL)
{
//
// Store the input string into the ped's pointer. Str_SetPtr will
// allocate/free memory as needed.
//
retVal = Str_SetPtr(&(ped->pszCueBannerText), pszBanner);
//
// Redraw the control
//
InvalidateRect(ped->hwnd, NULL, FALSE);
}
return retVal;
}
//---------------------------------------------------------------------------//
//
// EditSL_WndProc
//
// Class procedure for all single line edit controls.
// Dispatches all messages to the appropriate handlers which are named
// as follows:
// EditSL_ (single line) prefixes all single line edit control procedures while
// Edit_ (edit control) prefixes all common handlers.
//
// The EditSL_WndProc only handles messages specific to single line edit
// controls.
//
LRESULT EditSL_WndProc(PED ped, UINT message, WPARAM wParam, LPARAM lParam)
{
HDC hdc;
PAINTSTRUCT ps;
POINT pt;
switch (message)
{
case WM_INPUTLANGCHANGE:
if (ped && ped->fFocus && ped->pLpkEditCallout)
{
UINT cxCaret;
SystemParametersInfo(SPI_GETCARETWIDTH, 0, (LPVOID)&cxCaret, 0);
HideCaret(ped->hwnd);
hdc = Edit_GetDC(ped, TRUE);
DestroyCaret();
ped->pLpkEditCallout->EditCreateCaret ((PED0)ped, hdc, cxCaret, ped->lineHeight, (UINT)lParam);
EditSL_SetCaretPosition(ped, hdc);
Edit_ReleaseDC(ped, hdc, TRUE);
ShowCaret(ped->hwnd);
}
goto PassToDefaultWindowProc;
case WM_STYLECHANGED:
if (ped && ped->pLpkEditCallout)
{
switch (wParam)
{
case GWL_STYLE:
Edit_UpdateFormat(ped, ((LPSTYLESTRUCT)lParam)->styleNew, GET_EXSTYLE(ped));
return 1L;
case GWL_EXSTYLE:
Edit_UpdateFormat(ped, GET_STYLE(ped), ((LPSTYLESTRUCT)lParam)->styleNew);
return 1L;
}
}
goto PassToDefaultWindowProc;
case WM_CHAR:
//
// wParam - the value of the key
// lParam - modifiers, repeat count etc (not used)
//
if (!ped->fEatNextChar)
{
EditSL_Char(ped, (UINT)wParam);
}
else
{
ped->fEatNextChar = FALSE;
}
break;
case WM_ERASEBKGND:
//
// wParam - device context handle
// lParam - not used
// We do nothing on this message and we don't want DefWndProc to do
// anything, so return 1
//
return 1;
case WM_GETDLGCODE:
{
LONG code = DLGC_WANTCHARS | DLGC_HASSETSEL | DLGC_WANTARROWS;
//
// If this is a WM_SYSCHAR message generated by the UNDO keystroke
// we want this message so we can EAT IT in "case WM_SYSCHAR:"
//
if (lParam)
{
switch (((LPMSG)lParam)->message)
{
case WM_SYSCHAR:
if ((HIWORD(((LPMSG)lParam)->lParam) & SYS_ALTERNATE) &&
((WORD)wParam == VK_BACK))
{
code |= DLGC_WANTMESSAGE;
}
break;
case WM_KEYDOWN:
if (( (((WORD)wParam == VK_RETURN) ||
((WORD)wParam == VK_ESCAPE)) &&
(ped->listboxHwnd) &&
(GetWindowStyle(ped->hwndParent) & CBS_DROPDOWN) &&
SendMessage(ped->hwndParent, CB_GETDROPPEDSTATE, 0, 0L)))
{
code |= DLGC_WANTMESSAGE;
}
break;
}
}
return code;
}
break;
case WM_KEYDOWN:
//
// wParam - virt keycode of the given key
// lParam - modifiers such as repeat count etc. (not used)
//
EditSL_KeyDown(ped, (UINT)wParam, 0);
break;
case WM_KILLFOCUS:
//
// wParam - handle of the window that receives the input focus
// lParam - not used
//
EditSL_KillFocus(ped, (HWND)wParam);
break;
case WM_CAPTURECHANGED:
if (ped->fMouseDown)
{
ped->fMouseDown = FALSE;
}
break;
case WM_MOUSEMOVE:
UserAssert(ped->fMouseDown);
//
// FALL THRU
//
case WM_LBUTTONDBLCLK:
case WM_LBUTTONDOWN:
case WM_LBUTTONUP:
//
// wParam - contains a value that indicates which virtual keys are down
// lParam - contains x and y coords of the mouse cursor
//
POINTSTOPOINT(pt, lParam);
EditSL_MouseMotion(ped, message, (UINT)wParam, &pt);
break;
case WM_CREATE:
//
// wParam - handle to window being created
// lParam - points to a CREATESTRUCT that contains copies of parameters
// passed to the CreateWindow function.
//
return EditSL_Create(ped, (LPCREATESTRUCT)lParam);
break;
case WM_PRINTCLIENT:
//
// wParam -- can be hdc from subclassed paint
// lParam -- unused
//
EditSL_Paint(ped, (HDC) wParam);
break;
case WM_PAINT:
//
// wParam -- can be hdc from subclassed paint
// lParam -- unused
//
if (wParam)
{
hdc = (HDC) wParam;
}
else
{
//
// this hide/show caret is outside Begin/EndPaint to handle the
// case when the caret is half in/half out of the update region
//
HideCaret(ped->hwnd);
hdc = BeginPaint(ped->hwnd, &ps);
}
//
// PORTPORT: Note the symantics of IsWindowVisible and _IsWindowVisible are
// slightly different.
//
if (IsWindowVisible(ped->hwnd))
{
EditSL_Paint(ped, hdc);
}
if (!wParam)
{
EndPaint(ped->hwnd, &ps);
ShowCaret(ped->hwnd);
}
break;
case WM_PASTE:
//
// wParam - not used
// lParam - not used
//
if (!ped->fReadOnly)
{
EditSL_Paste(ped);
}
break;
case WM_SETFOCUS:
//
// wParam - handle of window that loses the input focus (may be NULL)
// lParam - not used
//
EditSL_SetFocus(ped);
break;
case WM_SIZE:
// wParam - defines the type of resizing fullscreen, sizeiconic,
// sizenormal etc.
// lParam - new width in LOWORD, new height in HIGHWORD of client area
Edit_Size(ped, NULL, TRUE);
return 0;
case WM_SYSKEYDOWN:
//
// wParam -- virtual key code
// lParam -- modifiers
//
//
// Are we in a combobox with the Alt key down?
//
if (ped->listboxHwnd && (lParam & 0x20000000L))
{
//
// Handle Combobox support. We want alt up or down arrow to behave
// like F4 key which completes the combo box selection
//
if (lParam & 0x1000000)
{
//
// This is an extended key such as the arrow keys not on the
// numeric keypad so just drop the combobox.
//
if (wParam == VK_DOWN || wParam == VK_UP)
{
goto DropCombo;
}
else
{
goto SkipDropCombo;
}
}
if (!(GetKeyState(VK_NUMLOCK) & 1) &&
(wParam == VK_DOWN || wParam == VK_UP))
{
//
// NUMLOCK is up and the keypad up or down arrow hit:
// eat character generated by keyboard driver.
//
ped->fEatNextChar = TRUE;
}
else
{
goto SkipDropCombo;
}
DropCombo:
if (SendMessage(ped->hwndParent, CB_GETEXTENDEDUI, 0, 0) & 0x00000001)
{
//
// Extended ui doesn't honor VK_F4.
//
if (SendMessage(ped->hwndParent, CB_GETDROPPEDSTATE, 0, 0))
{
return SendMessage(ped->hwndParent, CB_SHOWDROPDOWN, 0, 0);
}
else
{
return SendMessage(ped->hwndParent, CB_SHOWDROPDOWN, 1, 0);
}
}
else
{
return SendMessage(ped->listboxHwnd, WM_KEYDOWN, VK_F4, 0);
}
}
SkipDropCombo:
if (wParam == VK_BACK)
{
SendMessage(ped->hwnd, WM_UNDO, 0, 0L);
break;
}
else
{
goto PassToDefaultWindowProc;
}
break;
case EM_GETLINE:
//
// wParam - line number to copy (always the first line for SL)
// lParam - buffer to copy text to. FIrst word is max # of bytes to copy
//
return Edit_GetTextHandler(ped, (*(LPWORD)lParam), (LPSTR)lParam, FALSE);
case EM_LINELENGTH:
//
// wParam - ignored
// lParam - ignored
//
return (LONG)ped->cch;
case EM_SETSEL:
//
// wParam -- start pos
// lParam -- end pos
//
EditSL_SetSelection(ped, (ICH)wParam, (ICH)lParam);
break;
case EM_REPLACESEL:
//
// wParam - flag for 4.0+ apps saying whether to clear undo
// lParam - points to a null terminated string of replacement text
//
EditSL_ReplaceSel(ped, (LPSTR)lParam);
if (!ped->f40Compat || !wParam)
{
Edit_EmptyUndo(Pundo(ped));
}
break;
case EM_GETFIRSTVISIBLELINE:
//
// wParam - not used
// lParam - not used
//
// effects: Returns the first visible line for single line edit controls.
//
return ped->ichScreenStart;
case EM_POSFROMCHAR:
//
// wParam -- char index in text
// lParam -- not used
// This function returns the (x,y) position of the character.
// y is always 0 for single.
//
case EM_CHARFROMPOS:
//
// wParam -- unused
// lParam -- pt in edit client coords
// This function returns
// LOWORD: the position of the _closest_ char
// to the passed in point.
// HIWORD: the index of the line (always 0 for single)
{
LONG xyPos;
hdc = Edit_GetDC(ped, TRUE);
if (message == EM_POSFROMCHAR)
{
xyPos = MAKELONG(EditSL_IchToLeftXPos(ped, hdc, (ICH)wParam), 0);
}
else
{
POINTSTOPOINT(pt, lParam);
xyPos = EditSL_MouseToIch(ped, hdc, &pt);
}
Edit_ReleaseDC(ped, hdc, TRUE);
return (LRESULT)xyPos;
}
case WM_UNDO:
case EM_UNDO:
EditSL_Undo(ped);
break;
case EM_SETCUEBANNER:
//
// This message passes in a LPCWSTR as the lParam to set the
// cue banner text.
//
// Call function to set the text:
return (LRESULT)EditSL_SetCueBanner(ped, (LPCWSTR) lParam);
break;
default:
PassToDefaultWindowProc:
return DefWindowProc(ped->hwnd, message, wParam, lParam);
break;
}
return 1L;
}