299 lines
7.4 KiB
C++
299 lines
7.4 KiB
C++
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/*
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* @doc INTERNAL
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*
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* @module dispprt.cpp -- Special logic for printer object |
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*
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* Authors:
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* Original RichEdit code: David R. Fulmer
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* Christian Fortini
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* Jon Matousek
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*/
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#include "_common.h"
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#include "_dispprt.h"
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#include "_edit.h"
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#include "_font.h"
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#include "_measure.h"
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#include "_render.h"
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#include "_select.h"
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#define PARA_NUMBER_NOT_SET ((WORD) -1)
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ASSERTDATA
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/*
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* CDisplayPrinter::CDisplayPrinter(ped, hdc, x, y, prtcon)
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*
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* @mfunc
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* Contructs a object that can be used to print a text control
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*/
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CDisplayPrinter::CDisplayPrinter (
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CTxtEdit* ped,
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HDC hdc, //@parm HDC for drawing
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LONG x, //@parm Max width to draw
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LONG y, //@parm Max height to draw
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SPrintControl prtcon//@parm Special controls for this print object
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)
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: CDisplayML( ped ), _prtcon(prtcon)
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{
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TRACEBEGIN(TRCSUBSYSPRT, TRCSCOPEINTERN, "CDisplayPrinter::CDisplayPrinter");
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Assert ( hdc );
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_fNoUpdateView = TRUE;
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_xWidthMax = x;
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_yHeightMax = y;
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_wNumber = PARA_NUMBER_NOT_SET;
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}
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/*
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* CDisplayPrinter::SetPrintDimensions(prc)
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*
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* @mfunc
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* Set area to print.
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*/
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void CDisplayPrinter::SetPrintDimensions(
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RECT *prc) //@parm dimensions of current area to print to.
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{
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_xWidthMax = prc->right - prc->left;
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_yHeightMax = prc->bottom - prc->top;
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}
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/*
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* CDisplayPrinter::FormatRange(cpFirst, cpMost)
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*
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* @mfunc
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* Format a range of text into this display and used only for printing.
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*
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* @rdesc
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* actual end of range position (updated)
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*/
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LONG CDisplayPrinter::FormatRange(
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LONG cpFirst, //@parm Start of text range
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LONG cpMost, //@parm End of text range
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BOOL fWidowOrphanControl) //@parm If TRUE, suppress widow/orphan
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{
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TRACEBEGIN(TRCSUBSYSPRT, TRCSCOPEINTERN, "CDisplayPrinter::FormatRange");
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LONG cch;
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WCHAR ch;
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BOOL fFirstInPara = TRUE;
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CLine liTarget;
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CLine * pliNew = NULL;
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LONG yHeightRnd;
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LONG yHeightTgt;
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BOOL fBindCp = FALSE;
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const CDevDesc *pdd = GetDdTarget() ? GetDdTarget() : this;
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// Set client height for zooming
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_yHeightClient = this->LYtoDY(_yHeightMax);
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// Set maximum in terms of target DC.
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LONG yMax = pdd->LYtoDY(_yHeightMax);
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if(cpMost < 0)
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cpMost = _ped->GetTextLength();
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CMeasurer me(this);
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cpFirst = me.SetCp(cpFirst); // Validate cpFirst while setting me
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ch = me.GetChar();
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// TODO: COMPATIBILITY ISSUE: Richedit 1.0 adjusted to before a
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// CRLF/CRCRLF boundary. if_ped->fUseCRLF(), adjust accordingly
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if(fBindCp)
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{
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cpFirst = me.GetCp();
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me._rpCF.BindToCp(cpFirst);
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me._rpPF.BindToCp(cpFirst);
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}
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_cpMin = cpFirst;
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_cpFirstVisible = cpFirst;
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yHeightTgt = 0;
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yHeightRnd = 0;
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if(me.GetCp())
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fFirstInPara = me._rpTX.IsAfterEOP();
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// Clear line CArray
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Clear(AF_DELETEMEM);
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// Assume that we will break on words
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UINT uiBreakAtWord = MEASURE_BREAKATWORD;
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if(_prtcon._fPrintFromDraw)
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{
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// This is from Draw so we want to take inset into account
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LONG xWidthView = _xWidthMax;
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GetViewDim(xWidthView, yMax);
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_xWidthView = (SHORT) xWidthView;
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// Restore client height
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_yHeightClient = this->LYtoDY(_yHeightMax);
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}
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else // Message-based printing always does word wrap
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SetWordWrap(TRUE);
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// Set paragraph numbering. This is a fairly difficult problem
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// because printing can start anywhere and end anywhere. However,
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// most printing will involve a contiguous range of pages. Therefore,
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// we cache the paragraph number and the cp for that number and
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// only resort to looking in the line array if the cached information
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// has become invalid.
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if ((PARA_NUMBER_NOT_SET == _wNumber) || (cpFirst != _cpForNumber))
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{
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CLinePtr rp(_ped->_pdp);
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rp.RpSetCp(cpFirst, FALSE);
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_wNumber = rp.GetNumber();
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_cpForNumber = cpFirst;
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}
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me.SetNumber(_wNumber);
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while(me.GetCp() < cpMost)
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{
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// Add one new line
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pliNew = Add(1, NULL);
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if(!pliNew)
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{
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_ped->GetCallMgr()->SetOutOfMemory();
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goto err;
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}
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// Store the current number of the paragraph. We do it
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// here because we have to measure and that potentially
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// updates the number of the paragraph in the measurer
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// for a line that might not be on the page.
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_wNumber = me.GetNumber();
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// Stuff some text into this new line
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if(!pliNew->Measure(me, cpMost - me.GetCp(), -1,
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uiBreakAtWord | (fFirstInPara ? MEASURE_FIRSTINPARA : 0),
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&liTarget))
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{
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Assert(FALSE);
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goto err;
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}
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// Note, we always put at least one line on a page. Otherwise, if the
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// first line is too big, we would cause our client to infinite loop
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// because we would never advance the print cp.
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if(_cel > 1 && (yHeightTgt + liTarget._yHeight > yMax))
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{
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cch = -pliNew->_cch; // Bump last line to next page
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_cel--; // One less line
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#if 0
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CLine *pli = pliNew - 1; // Point at previous line
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// If this line and the previous one are in the same para and
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// either this one ends in an EOP or the previous one starts
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// a para, bump both to following page (widow/orphan)
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if(fWidowOrphanControl)
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{
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if(_cel > 1 && !fFirstInPara &&
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(pli->_bFlags & fliFirstInPara || (pliNew->_bFlags & fliHasEOP)))
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{
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cch -= pli->_cch;
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_cel--; // One less line
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pli--; // Point to previous line
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}
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if(_cel > 1 && pli->_nHeading)
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{ // Don't end page with a heading
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cch -= pli->_cch;
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_cel--; // One less line
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}
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}
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#endif
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me.Advance(cch); // Move back over lines discarded
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break;
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}
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fFirstInPara = (pliNew->_bFlags & fliHasEOP);
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yHeightTgt += liTarget._yHeight;
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yHeightRnd += pliNew->_yHeight;
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if (me.GetPrevChar() == FF)
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break;
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}
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// If there was no text, then add a single blank line
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if(!pliNew)
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{
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pliNew = Add(1, NULL);
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if(!pliNew)
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{
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_ped->GetCallMgr()->SetOutOfMemory();
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goto err;
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}
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me.NewLine(fFirstInPara);
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*pliNew = me._li;
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}
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// Update display height
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_yHeight = yHeightRnd;
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// Update display width
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_xWidth = CalcDisplayWidth();
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cpMost = me.GetCp();
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_cpCalcMax = cpMost;
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_yCalcMax = _yHeight;
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// Update paragraph caching information.
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_cpForNumber = cpMost;
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return cpMost;
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err:
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Clear(AF_DELETEMEM);
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_xWidth = 0;
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_yHeight = 0;
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return -1;
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}
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/*
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* CDisplayPrinter::GetNaturalSize(hdcDraw, hicTarget, dwMode, pwidth, pheight)
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*
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* @mfunc
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* Recalculate display to input width & height for TXTNS_FITTOCONTENT.
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*
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* @rdesc
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* S_OK - Call completed successfully <nl>
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*
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* @devnote
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* This assumes that FormatRange was called just prior to this.
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*/
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HRESULT CDisplayPrinter::GetNaturalSize(
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HDC hdcDraw, //@parm DC for drawing
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HDC hicTarget, //@parm DC for information
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DWORD dwMode, //@parm Type of natural size required
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LONG *pwidth, //@parm Width in device units to use for fitting
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LONG *pheight) //@parm Height in device units to use for fitting
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{
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TRACEBEGIN(TRCSUBSYSDISP, TRCSCOPEINTERN, "CDisplayPrinter::GetNaturalSize");
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*pwidth = _xWidth;
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*pheight = _yHeight;
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return S_OK;
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}
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/*
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* CDisplayPrinter::IsPrinter()
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*
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* @mfunc
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* Returns whether this is a printer
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*
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* @rdesc
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* TRUE - is a display to a printer
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* FALSE - is not a display to a printer
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*/
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BOOL CDisplayPrinter::IsPrinter() const
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{
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AssertSz(_hdc, "CDisplayPrinter::IsPrinter no hdc set");
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return GetDeviceCaps(_hdc, TECHNOLOGY) == DT_RASPRINTER;
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}
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