1098 lines
28 KiB
C++
1098 lines
28 KiB
C++
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//+-------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1996 - 2000.
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//
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// File: brview.cxx
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//
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// Contents:
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//
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// History: 15 Aug 1996 DLee Created
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//
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//--------------------------------------------------------------------------
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#include <pch.cxx>
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#pragma hdrstop
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#define TheModel _layout.GetModel()
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#define UNICODE_PARAGRAPH_SEPARATOR 0x2029
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const int BUFLEN = 256;
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WCHAR LineBuffer[BUFLEN];
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const int cpLeftMargin = 3;
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int TrimEOL (WCHAR * pwcLine, int cwcLine)
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{
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// If the line ends in \r\n or \n, don't include that in the length.
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// TabbedTextOut() prints garbage when it sees \r or \n
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if ((cwcLine >= 2) && (pwcLine[cwcLine - 2] == L'\r'))
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cwcLine -= 2;
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else if ((cwcLine >= 1) &&
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((pwcLine[cwcLine - 1] == L'\r') ||
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(pwcLine[cwcLine - 1] == UNICODE_PARAGRAPH_SEPARATOR) ||
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(pwcLine[cwcLine - 1] == L'\n')))
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cwcLine--;
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return cwcLine;
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} //TrimEOL
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void TextMetrics::GetSizes ( CharDim& dim )
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{
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dim.cxChar = _tm.tmAveCharWidth;
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dim.cyChar = _tm.tmHeight + _tm.tmExternalLeading;
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} //GetSizes
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void View::_NoSelection()
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{
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_Selection.None();
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} //NoSelection
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void View::_UpdateSelection(
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LPARAM lParam )
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{
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int x = (int) (short) LOWORD( lParam );
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int y = (int) (short) HIWORD( lParam );
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if ( y < 0 )
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y = 0;
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else if ( y > _cyClient )
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y = _cyClient;
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int para, o;
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GetParaAndOffset( x, y, para, o );
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if ( _fStartIsAnchor )
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{
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if ( ( para < _Selection.ParaStart() ) ||
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( ( para == _Selection.ParaStart() ) &&
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( o < _Selection.OffStart() ) ) )
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{
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_Selection.SetEnd( _Selection.ParaStart(), _Selection.OffStart() );
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_Selection.SetStart( para, o );
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_fStartIsAnchor = FALSE;
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}
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else
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{
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_Selection.SetEnd( para, o );
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}
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}
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else
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{
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if ( ( para > _Selection.ParaEnd() ) ||
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( ( para == _Selection.ParaEnd() ) &&
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( o > _Selection.OffEnd() ) ) )
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{
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_Selection.SetStart( _Selection.ParaEnd(), _Selection.OffEnd() );
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_Selection.SetEnd( para, o );
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_fStartIsAnchor = TRUE;
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}
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else
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{
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_Selection.SetStart( para, o );
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}
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}
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if ( _fFullSelRepaint )
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{
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InvalidateRect( _hwnd, NULL, FALSE );
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_fFullSelRepaint = FALSE;
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}
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else
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{
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int yMin = __min( y, _cpLastSelY );
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int yMax = __max( y, _cpLastSelY );
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RECT rc;
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rc.left = 0;
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rc.right = _cxClient;
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rc.top = yMin - LineHeight();
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rc.bottom = yMax + LineHeight();
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InvalidateRect( _hwnd, &rc, FALSE );
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}
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_cpLastSelY = y;
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} //_UpdateSelection
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void View::ButtonUp( WPARAM wParam, LPARAM lParam )
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{
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_fSelecting = FALSE;
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if ( GetCapture() == _hwnd )
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ReleaseCapture();
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if ( _fDblClk )
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return;
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if ( _Selection.IsNull() )
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{
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_Selection.None();
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return;
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}
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else
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{
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_UpdateSelection( lParam );
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}
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} //ButtonUp
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void View::MouseMove( WPARAM wParam, LPARAM lParam )
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{
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if ( _fSelecting &&
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( wParam & MK_LBUTTON ) )
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_UpdateSelection( lParam );
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} //MouseMove
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void View::ButtonDown( WPARAM wParam, LPARAM lParam )
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{
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BOOL fOldSel = _Selection.SelectionExists();
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_fDblClk = FALSE;
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SetCapture( _hwnd );
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_fStartIsAnchor = TRUE;
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_fSelecting = TRUE;
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_NoSelection();
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int x = LOWORD( lParam );
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int y = HIWORD( lParam );
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_cpLastSelY = y;
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int para, o;
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GetParaAndOffset( x, y, para, o );
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_Selection.SetStart( para, o );
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_fFullSelRepaint = FALSE;
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if ( fOldSel )
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InvalidateRect( _hwnd, NULL, FALSE );
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} //ButtonDown
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int GetCharOffset(
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HDC hdc,
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int iClickX,
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WCHAR * pwcLine,
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int cwcLine,
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int cpLeft )
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{
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// a click in the left margin counts
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if ( 0 != cwcLine && iClickX < cpLeft )
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return 0;
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int l = cpLeft;
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for ( int c = 0; c < cwcLine; c++ )
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{
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int dx = LOWORD( GetTabbedTextExtent( hdc, pwcLine, 1 + c, 0, 0 ) );
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if ( iClickX >= l && iClickX <= dx + cpLeft )
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break;
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l = dx + cpLeft;
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}
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return c;
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} //GetCharOffset
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void View::GetParaAndOffset(
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int x,
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int y,
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int & para,
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int & offset )
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{
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offset = 0;
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HDC hdc = GetDC( _hwnd );
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if ( 0 == hdc )
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return;
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HFONT hOldFont = (HFONT) SelectObject( hdc, _layout.Font() );
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para = _layout.FirstPara();
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int paLine = _layout.FirstLineInPara(); // line within paragraph
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int paOffBeg; // line beginning offset within paragraph
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int paOffEnd; // line end offset within paragraph
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int line = 0; // line # counting from top of window
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int left = cpLeftMargin - _layout.XBegin();
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while ( _layout.GetLineOffsets( para, paLine, paOffBeg, paOffEnd ) )
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{
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do
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{
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int top = _layout.Y ( line );
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int bottom = top + _layout.CyChar();
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if ( y >= top && y <= bottom )
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{
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// got the line, now find the word selected
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int cwcLine = __min ( BUFLEN, paOffEnd - paOffBeg );
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if ( TheModel.GetLine(para, paOffBeg, cwcLine, LineBuffer ) )
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{
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cwcLine = TrimEOL( LineBuffer, cwcLine );
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offset = paOffBeg + GetCharOffset( hdc,
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x,
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LineBuffer,
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cwcLine,
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cpLeftMargin );
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}
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goto cleanup;
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}
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line++;
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if (line >= _layout.MaxLines())
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goto cleanup;
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paLine++;
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} while ( _layout.GetLineOffsets( para, paLine, paOffBeg, paOffEnd ) );
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// next paragraph
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para++;
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paLine = 0;
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}
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cleanup:
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SelectObject( hdc, hOldFont );
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ReleaseDC( _hwnd, hdc );
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} //GetParaAndOffset
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void View::EditCopy( HWND hwnd, WPARAM wParam )
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{
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if ( _Selection.SelectionExists() )
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{
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// is everything in one paragraph? -- easy case
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if ( _Selection.IsInOnePara() )
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{
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int cwcLine = __min ( BUFLEN,
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_Selection.OffEnd() - _Selection.OffStart() );
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TheModel.GetLine( _Selection.ParaStart(),
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_Selection.OffStart(),
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cwcLine, LineBuffer );
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cwcLine = TrimEOL( LineBuffer, cwcLine );
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LineBuffer[cwcLine] = 0;
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PutInClipboard( LineBuffer );
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}
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else
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{
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// compute how much text to copy
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int cwcTotal = 0;
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for ( int p = _Selection.ParaStart();
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p <= _Selection.ParaEnd();
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p++ )
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{
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int cwcLine = BUFLEN;
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if ( p == _Selection.ParaStart() )
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{
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TheModel.GetLine( p, _Selection.OffStart(),
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cwcLine, LineBuffer );
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}
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else if ( p == _Selection.ParaEnd() )
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{
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TheModel.GetLine( p, 0, cwcLine, LineBuffer );
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cwcLine = _Selection.OffEnd();
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}
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else
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{
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TheModel.GetLine( p, 0, cwcLine, LineBuffer );
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}
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cwcTotal += cwcLine;
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}
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// allocate a buffer and copy the text
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XArray<WCHAR> aClip( cwcTotal + 1 );
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WCHAR *pwc = (WCHAR *) aClip.GetPointer();
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cwcTotal = 0;
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for ( p = _Selection.ParaStart();
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p <= _Selection.ParaEnd();
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p++ )
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{
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int cwcLine = BUFLEN;
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if ( p == _Selection.ParaStart() )
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{
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TheModel.GetLine( p, _Selection.OffStart(),
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cwcLine, LineBuffer );
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}
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else if ( p == _Selection.ParaEnd() )
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{
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TheModel.GetLine( p, 0, cwcLine, LineBuffer );
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cwcLine = _Selection.OffEnd();
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}
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else
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{
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TheModel.GetLine( p, 0, cwcLine, LineBuffer );
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}
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LineBuffer[cwcLine] = 0;
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wcscpy( pwc + cwcTotal, LineBuffer );
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cwcTotal += cwcLine;
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}
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PutInClipboard( pwc );
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}
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}
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} //EditCopy
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BOOL isWhite( WCHAR c )
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{
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// well, actually white space and C++ break characters
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return ( L' ' == c ||
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L'\r' == c ||
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L'\n' == c ||
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L'\t' == c ||
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L'\\' == c ||
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L'\'' == c ||
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L'\"' == c ||
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L':' == c ||
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L';' == c ||
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L',' == c ||
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L'[' == c ||
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L']' == c ||
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L'{' == c ||
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L'}' == c ||
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L'(' == c ||
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L')' == c ||
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L'/' == c ||
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L'+' == c ||
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L'-' == c ||
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L'=' == c ||
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L'*' == c ||
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L'^' == c ||
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L'~' == c ||
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L'&' == c ||
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L'!' == c ||
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L'?' == c ||
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L'<' == c ||
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L'>' == c ||
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L'.' == c ||
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L'|' == c ||
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UNICODE_PARAGRAPH_SEPARATOR == c );
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} //isWhite
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BOOL GetSelectedWord(
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HDC hdc,
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int iClickX,
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WCHAR *pwcLine,
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int cwcLine,
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int cpLeft,
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int &rStart,
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int &rEnd )
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{
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// what character had the click?
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int c = GetCharOffset( hdc, iClickX, pwcLine, cwcLine, cpLeft );
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// move left and right till white space is found
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if ( c != cwcLine )
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{
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rEnd = c;
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while ( rEnd < (cwcLine - 1) && !isWhite( pwcLine[ rEnd ] ) )
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rEnd++;
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|
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// selection doesn't include end
|
||
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|
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if ( ( rEnd == ( cwcLine - 1 ) ) &&
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|
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( !isWhite( pwcLine[ rEnd ] ) ) )
|
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rEnd++;
|
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rStart = c;
|
||
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while ( rStart > 0 && !isWhite( pwcLine[ rStart ] ) )
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||
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rStart--;
|
||
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|
||
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// don't include white space if not at start of line
|
||
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|
||
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if ( rStart < c && isWhite( pwcLine[ rStart ] ) )
|
||
|
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rStart++;
|
||
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|
|
||
|
|
// did we grab anything?
|
||
|
|
|
||
|
|
return ( rEnd > rStart );
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
} //GetSelectedWord
|
||
|
|
|
||
|
|
int View::ParaFromY(
|
||
|
|
int y )
|
||
|
|
{
|
||
|
|
int para = _layout.FirstPara();
|
||
|
|
int paLine = _layout.FirstLineInPara(); // line within paragraph
|
||
|
|
|
||
|
|
int paOffBeg; // line beginning offset within paragraph
|
||
|
|
int paOffEnd; // line end offset within paragraph
|
||
|
|
int line = 0; // line # counting from top of window
|
||
|
|
int left = cpLeftMargin - _layout.XBegin();
|
||
|
|
|
||
|
|
while ( _layout.GetLineOffsets( para, paLine, paOffBeg, paOffEnd ) )
|
||
|
|
{
|
||
|
|
do
|
||
|
|
{
|
||
|
|
int top = _layout.Y( line );
|
||
|
|
int bottom = top + _layout.CyChar();
|
||
|
|
|
||
|
|
if ( y >= top && y <= bottom )
|
||
|
|
{
|
||
|
|
return 1 + para;
|
||
|
|
}
|
||
|
|
|
||
|
|
line++;
|
||
|
|
if (line >= _layout.MaxLines())
|
||
|
|
return _layout.FirstPara();
|
||
|
|
paLine++;
|
||
|
|
} while ( _layout.GetLineOffsets( para, paLine, paOffBeg, paOffEnd ) );
|
||
|
|
|
||
|
|
// next paragraph
|
||
|
|
para++;
|
||
|
|
paLine = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
return _layout.FirstPara();
|
||
|
|
} //ParaFromY
|
||
|
|
|
||
|
|
void View::DblClk( WPARAM wParam, LPARAM lParam )
|
||
|
|
{
|
||
|
|
_fDblClk = TRUE;
|
||
|
|
|
||
|
|
BOOL fCtrl = ( 0 != ( 0x8000 & GetAsyncKeyState( VK_CONTROL ) ) );
|
||
|
|
|
||
|
|
int x = LOWORD( lParam );
|
||
|
|
int y = HIWORD( lParam );
|
||
|
|
|
||
|
|
Selection oldSel( _Selection );
|
||
|
|
_Selection.None();
|
||
|
|
|
||
|
|
HDC hdc = GetDC( _hwnd );
|
||
|
|
|
||
|
|
if ( 0 == hdc )
|
||
|
|
return;
|
||
|
|
|
||
|
|
HFONT hOldFont = (HFONT) SelectObject( hdc, _layout.Font() );
|
||
|
|
|
||
|
|
int para = _layout.FirstPara();
|
||
|
|
int paLine = _layout.FirstLineInPara(); // line within paragraph
|
||
|
|
|
||
|
|
int paOffBeg; // line beginning offset within paragraph
|
||
|
|
int paOffEnd; // line end offset within paragraph
|
||
|
|
int line = 0; // line # counting from top of window
|
||
|
|
int left = cpLeftMargin - _layout.XBegin();
|
||
|
|
|
||
|
|
while (_layout.GetLineOffsets ( para, paLine, paOffBeg, paOffEnd ))
|
||
|
|
{
|
||
|
|
do
|
||
|
|
{
|
||
|
|
int top = _layout.Y ( line );
|
||
|
|
int bottom = top + _layout.CyChar();
|
||
|
|
|
||
|
|
if ( y >= top && y <= bottom )
|
||
|
|
{
|
||
|
|
// if ctrl key is down, attempt to fire up an editor
|
||
|
|
|
||
|
|
if ( fCtrl )
|
||
|
|
{
|
||
|
|
ViewFile( _pModel->Filename(), fileEdit, 1+para );
|
||
|
|
goto cleanup;
|
||
|
|
}
|
||
|
|
|
||
|
|
// got the line, now find the word selected
|
||
|
|
|
||
|
|
int cwcLine = __min ( BUFLEN, paOffEnd - paOffBeg );
|
||
|
|
|
||
|
|
if ( TheModel.GetLine(para, paOffBeg, cwcLine, LineBuffer ) )
|
||
|
|
{
|
||
|
|
cwcLine = TrimEOL( LineBuffer, cwcLine );
|
||
|
|
|
||
|
|
int iStart, iEnd;
|
||
|
|
|
||
|
|
if ( GetSelectedWord( hdc,
|
||
|
|
x,
|
||
|
|
LineBuffer,
|
||
|
|
cwcLine,
|
||
|
|
cpLeftMargin,
|
||
|
|
iStart,
|
||
|
|
iEnd ) )
|
||
|
|
_Selection.Set( para,
|
||
|
|
paOffBeg + iStart,
|
||
|
|
para,
|
||
|
|
paOffBeg + iEnd );
|
||
|
|
|
||
|
|
RECT rc;
|
||
|
|
rc.left = 0; rc.right = _cxClient;
|
||
|
|
rc.top = top; rc.bottom = bottom;
|
||
|
|
InvalidateRect( _hwnd, &rc, FALSE );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if ( oldSel.IsInSelection( para ) )
|
||
|
|
{
|
||
|
|
RECT rc;
|
||
|
|
rc.left = 0; rc.right = _cxClient;
|
||
|
|
rc.top = top; rc.bottom = bottom;
|
||
|
|
InvalidateRect( _hwnd, &rc, FALSE );
|
||
|
|
}
|
||
|
|
|
||
|
|
line++;
|
||
|
|
if (line >= _layout.MaxLines())
|
||
|
|
goto cleanup;
|
||
|
|
paLine++;
|
||
|
|
} while (_layout.GetLineOffsets (para, paLine, paOffBeg, paOffEnd ));
|
||
|
|
|
||
|
|
// next paragraph
|
||
|
|
para++;
|
||
|
|
paLine = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
cleanup:
|
||
|
|
|
||
|
|
SelectObject( hdc, hOldFont );
|
||
|
|
ReleaseDC( _hwnd, hdc );
|
||
|
|
|
||
|
|
UpdateWindow( _hwnd );
|
||
|
|
} //DblClk
|
||
|
|
|
||
|
|
void View::Size ( int cx, int cy )
|
||
|
|
{
|
||
|
|
_cyClient = cy;
|
||
|
|
_cxClient = cx;
|
||
|
|
}
|
||
|
|
|
||
|
|
void View::SetScrollMax ()
|
||
|
|
{
|
||
|
|
int linesFromEnd = _cyClient / _layout.CyChar() - 2;
|
||
|
|
int cline;
|
||
|
|
for (int para = TheModel.Paras() - 1; para >= 0; para--)
|
||
|
|
{
|
||
|
|
cline = _layout.LinesInPara(para);
|
||
|
|
if (linesFromEnd < cline)
|
||
|
|
break;
|
||
|
|
linesFromEnd -= cline;
|
||
|
|
}
|
||
|
|
|
||
|
|
_paraVScrollMax = TheModel.Paras() - 1;
|
||
|
|
|
||
|
|
if ( _paraVScrollMax < 0 )
|
||
|
|
{
|
||
|
|
_paraVScrollMax = 0;
|
||
|
|
_paLineVScrollMax = 0;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
_paLineVScrollMax = cline - 1 - linesFromEnd;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void View::SetRange ( int maxParaLen, int cParas )
|
||
|
|
{
|
||
|
|
_layout.SetParaRange(cParas);
|
||
|
|
#if 0
|
||
|
|
_nHScrollMax = 2 + maxParaLen - _cxClient / _layout.CxChar();
|
||
|
|
if ( _nHScrollMax < 0 )
|
||
|
|
#endif
|
||
|
|
_nHScrollMax = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void View::SetScroll( Position & pos )
|
||
|
|
{
|
||
|
|
_fFullSelRepaint = TRUE;
|
||
|
|
|
||
|
|
int paLine, paOffBeg, paOffEnd;
|
||
|
|
_layout.Locate (pos.Para(), pos.BegOff(), paLine, paOffBeg, paOffEnd);
|
||
|
|
if (paLine >= 3)
|
||
|
|
{
|
||
|
|
_paraVScroll = pos.Para();
|
||
|
|
_paLineVScroll = paLine - 3;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// show last line of prev para
|
||
|
|
int iOffset = ( 0 == _cyClient ) ? 6 : ( VisibleLines() / 3 );
|
||
|
|
_paraVScroll = pos.Para() - iOffset;
|
||
|
|
|
||
|
|
if (_paraVScroll >= 0 )
|
||
|
|
{
|
||
|
|
_paLineVScroll = _layout.LinesInPara(_paraVScroll) - 1;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
_paraVScroll = 0;
|
||
|
|
_paLineVScroll = 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#if 0
|
||
|
|
if ( pos.EndOff() - _nHScrollPos + 1 > _cxClient / _layout.CxChar() )
|
||
|
|
_nHScrollPos = pos.EndOff() - _cxClient / _layout.CxChar() + 1;
|
||
|
|
else
|
||
|
|
_nHScrollPos = 0;
|
||
|
|
_nHScrollPos = min ( _nHScrollPos, _nHScrollMax );
|
||
|
|
#else
|
||
|
|
_nHScrollPos = 0;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
int View::JumpToPara ( int para )
|
||
|
|
{
|
||
|
|
_fFullSelRepaint = TRUE;
|
||
|
|
|
||
|
|
int delta = 0;
|
||
|
|
int paraStart;
|
||
|
|
int paraEnd;
|
||
|
|
if (para == _paraVScroll)
|
||
|
|
{
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
else if (para < _paraVScroll)
|
||
|
|
{
|
||
|
|
// jumping backwards, delta negative
|
||
|
|
delta = -_paLineVScroll;
|
||
|
|
for ( int p = _paraVScroll - 1; p >= para; p--)
|
||
|
|
delta -= _layout.LinesInPara(p);
|
||
|
|
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// jumping forward, delta positive
|
||
|
|
delta = _layout.LinesInPara(_paraVScroll) - _paLineVScroll;
|
||
|
|
for (int p = _paraVScroll + 1; p < para; p++)
|
||
|
|
delta += _layout.LinesInPara(p);
|
||
|
|
}
|
||
|
|
_paraVScroll = para;
|
||
|
|
_paLineVScroll = 0;
|
||
|
|
// return delta from previous position
|
||
|
|
return delta;
|
||
|
|
}
|
||
|
|
|
||
|
|
int View::IncVScrollPos ( int cLine )
|
||
|
|
{
|
||
|
|
_fFullSelRepaint = TRUE;
|
||
|
|
|
||
|
|
int para;
|
||
|
|
|
||
|
|
if (cLine >= 0)
|
||
|
|
{
|
||
|
|
// first back up to the beginning
|
||
|
|
// of the current para
|
||
|
|
int cLineLeft = cLine + _paLineVScroll;
|
||
|
|
// move forward
|
||
|
|
for (para = _paraVScroll; para <= _paraVScrollMax; para++)
|
||
|
|
{
|
||
|
|
int ln = _layout.LinesInPara(para);
|
||
|
|
if (cLineLeft < ln)
|
||
|
|
break;
|
||
|
|
cLineLeft -= ln;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (para > _paraVScrollMax)
|
||
|
|
{
|
||
|
|
// overshot the end
|
||
|
|
// move back
|
||
|
|
_paraVScroll = _paraVScrollMax;
|
||
|
|
int cline = _layout.LinesInPara(_paraVScroll);
|
||
|
|
_paLineVScroll = _paLineVScrollMax;
|
||
|
|
cLineLeft += cline - _paLineVScrollMax;
|
||
|
|
cLine -= cLineLeft;
|
||
|
|
}
|
||
|
|
else if (para == _paraVScrollMax && cLineLeft > _paLineVScrollMax)
|
||
|
|
{
|
||
|
|
_paraVScroll = _paraVScrollMax;
|
||
|
|
_paLineVScroll = _paLineVScrollMax;
|
||
|
|
cLineLeft -= _paLineVScrollMax;
|
||
|
|
cLine -= cLineLeft;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// cLineLeft < Lines In Para
|
||
|
|
_paraVScroll = para;
|
||
|
|
_paLineVScroll = cLineLeft;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if (cLine < 0)
|
||
|
|
{
|
||
|
|
// first skip to the end
|
||
|
|
// of the current para
|
||
|
|
int cLineLeft = - cLine + (_layout.LastLineInPara(_paraVScroll) - _paLineVScroll);
|
||
|
|
// move backward
|
||
|
|
for (para = _paraVScroll; para >= 0; para--)
|
||
|
|
{
|
||
|
|
int ln = _layout.LinesInPara(para);
|
||
|
|
if (ln > cLineLeft)
|
||
|
|
break;
|
||
|
|
cLineLeft -= ln;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (para < 0)
|
||
|
|
{
|
||
|
|
// overshot the beginning.
|
||
|
|
// move up one line
|
||
|
|
_paraVScroll = 0;
|
||
|
|
_paLineVScroll = 0;
|
||
|
|
cLineLeft++;
|
||
|
|
cLine += cLineLeft;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// cLineLeft < Lines In Para
|
||
|
|
_paraVScroll = para;
|
||
|
|
_paLineVScroll = _layout.LinesInPara(para) - cLineLeft - 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return cLine;
|
||
|
|
}
|
||
|
|
|
||
|
|
int View::IncHScrollPos ( int delta )
|
||
|
|
{
|
||
|
|
Win4Assert ( FALSE );
|
||
|
|
// Clip the increment
|
||
|
|
|
||
|
|
if ( delta < -_nHScrollPos )
|
||
|
|
delta = -_nHScrollPos;
|
||
|
|
else if ( delta > _nHScrollMax - _nHScrollPos )
|
||
|
|
delta = _nHScrollMax - _nHScrollPos;
|
||
|
|
_nHScrollPos += delta;
|
||
|
|
return delta;
|
||
|
|
}
|
||
|
|
|
||
|
|
void View::Paint( HWND hwnd )
|
||
|
|
{
|
||
|
|
_layout.Adjust ( _cxClient, _cyClient, _paraVScroll, _paLineVScroll, _nHScrollPos);
|
||
|
|
PaintText paint (hwnd, _paraVScroll, _paLineVScroll, _layout, _Selection);
|
||
|
|
paint.PrintLines ();
|
||
|
|
paint.HiliteHits ();
|
||
|
|
}
|
||
|
|
|
||
|
|
PaintText::PaintText(HWND hwnd, int paraFirst, int paLineFirst, Layout& layout,
|
||
|
|
Selection & Selection )
|
||
|
|
: Paint(hwnd), _paraFirst(paraFirst), _paLineFirst(paLineFirst),
|
||
|
|
_layout(layout), _Selection( Selection )
|
||
|
|
{
|
||
|
|
_hOldFont = (HFONT) SelectObject ( hdc, _layout.Font() );
|
||
|
|
|
||
|
|
SetBkColor ( hdc, GetSysColor(COLOR_WINDOW) );
|
||
|
|
SetTextColor( hdc, GetSysColor(COLOR_WINDOWTEXT) );
|
||
|
|
}
|
||
|
|
|
||
|
|
PaintText::~PaintText()
|
||
|
|
{
|
||
|
|
SelectObject ( hdc, _hOldFont );
|
||
|
|
}
|
||
|
|
|
||
|
|
void Layout::SetParaRange (int cParas)
|
||
|
|
{
|
||
|
|
_cParas = cParas;
|
||
|
|
_aParaLine = _pModel->GetParaLine();
|
||
|
|
}
|
||
|
|
|
||
|
|
void Layout::Adjust (int cx, int cy, int& paraVScroll, int& paLineVScroll, int nHScrollPos)
|
||
|
|
{
|
||
|
|
_cLine = (cy + _dim.cyChar - 1) / _dim.cyChar;
|
||
|
|
_cCharWidth = cx / _dim.cxChar;
|
||
|
|
_xBegin = nHScrollPos * _dim.cxChar;
|
||
|
|
|
||
|
|
if ( paraVScroll < 0 )
|
||
|
|
{
|
||
|
|
paraVScroll = 0;
|
||
|
|
paLineVScroll = 0;
|
||
|
|
}
|
||
|
|
_paLineFirst = paLineVScroll;
|
||
|
|
_paraFirst = paraVScroll;
|
||
|
|
}
|
||
|
|
|
||
|
|
int Layout::Y (int line ) const
|
||
|
|
{
|
||
|
|
return line * _dim.cyChar;
|
||
|
|
}
|
||
|
|
|
||
|
|
void Layout::Locate (int para, int paOff, int& paLine, int& paOffBeg, int& paOffEnd ) const
|
||
|
|
{
|
||
|
|
Win4Assert(para < _cParas);
|
||
|
|
paLine = 0;
|
||
|
|
paOffBeg = 0;
|
||
|
|
for (ParaLine const* p = &_aParaLine[para]; p != 0 && p->offEnd <= paOff; p = p->next)
|
||
|
|
{
|
||
|
|
paOffBeg = p->offEnd;
|
||
|
|
paLine++;
|
||
|
|
}
|
||
|
|
if (p == 0)
|
||
|
|
paOffEnd = 0;
|
||
|
|
else
|
||
|
|
paOffEnd = p->offEnd;
|
||
|
|
}
|
||
|
|
|
||
|
|
BOOL Layout::GetLineOffsets (int para, int paLine, int& paOffBeg, int& paOffEnd) const
|
||
|
|
{
|
||
|
|
if (para < _paraFirst || para > LastPara() || para >= _cParas)
|
||
|
|
return FALSE;
|
||
|
|
|
||
|
|
ParaLine const * p = &_aParaLine[para];
|
||
|
|
paOffBeg = 0;
|
||
|
|
for (int line = 0; line < paLine; line++)
|
||
|
|
{
|
||
|
|
paOffBeg = p->offEnd;
|
||
|
|
p = p->next;
|
||
|
|
if (p == 0)
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
paOffEnd = p->offEnd;
|
||
|
|
Win4Assert ( paOffEnd >= paOffBeg);
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
int Layout::LastPara() const
|
||
|
|
{
|
||
|
|
// at most this number
|
||
|
|
return _paraFirst + _cLine;
|
||
|
|
}
|
||
|
|
|
||
|
|
int Layout::LineNumber (int para, int paLine) const
|
||
|
|
{
|
||
|
|
if (para == _paraFirst)
|
||
|
|
{
|
||
|
|
return paLine - _paLineFirst;
|
||
|
|
}
|
||
|
|
int curPara = _paraFirst + 1;
|
||
|
|
int curLine = LinesInPara(_paraFirst) - _paLineFirst;
|
||
|
|
|
||
|
|
while (curPara < para)
|
||
|
|
{
|
||
|
|
curLine += LinesInPara(curPara);
|
||
|
|
curPara++;
|
||
|
|
}
|
||
|
|
return curLine + paLine;
|
||
|
|
}
|
||
|
|
|
||
|
|
int Layout::LinesInPara (int para) const
|
||
|
|
{
|
||
|
|
Win4Assert(para < _cParas);
|
||
|
|
int line = 1;
|
||
|
|
for (ParaLine const * p = _aParaLine[para].next; p != 0; p = p->next)
|
||
|
|
line++;
|
||
|
|
return line;
|
||
|
|
}
|
||
|
|
|
||
|
|
void EnableHilite( HDC hdc )
|
||
|
|
{
|
||
|
|
SetBkColor( hdc, GetSysColor(COLOR_HIGHLIGHT) );
|
||
|
|
SetTextColor( hdc, GetSysColor(COLOR_HIGHLIGHTTEXT) );
|
||
|
|
}
|
||
|
|
|
||
|
|
void EnableHitHilite( HDC hdc )
|
||
|
|
{
|
||
|
|
// SetBkColor( hdc, GetSysColor(COLOR_ACTIVECAPTION) );
|
||
|
|
// SetTextColor( hdc, GetSysColor(COLOR_CAPTIONTEXT) );
|
||
|
|
|
||
|
|
// SetBkColor( hdc, GetSysColor(COLOR_INACTIVECAPTION) );
|
||
|
|
// SetTextColor( hdc, GetSysColor(COLOR_INACTIVECAPTIONTEXT) );
|
||
|
|
|
||
|
|
// SetBkColor( hdc, GetSysColor(COLOR_HIGHLIGHTTEXT) );
|
||
|
|
// SetTextColor( hdc, GetSysColor(COLOR_HIGHLIGHT) );
|
||
|
|
|
||
|
|
SetBkColor( hdc, GetSysColor(COLOR_WINDOWTEXT) );
|
||
|
|
SetTextColor( hdc, GetSysColor(COLOR_WINDOW) );
|
||
|
|
|
||
|
|
// SetBkColor( hdc, GetSysColor(COLOR_HIGHLIGHT) );
|
||
|
|
// SetTextColor( hdc, GetSysColor(COLOR_HIGHLIGHTTEXT) );
|
||
|
|
}
|
||
|
|
|
||
|
|
void EnableNonCurrentHitHilite( HDC hdc )
|
||
|
|
{
|
||
|
|
SetBkColor ( hdc, GetSysColor(COLOR_WINDOW) );
|
||
|
|
SetTextColor( hdc, GetSysColor(COLOR_HIGHLIGHT) );
|
||
|
|
}
|
||
|
|
|
||
|
|
void DisableHilite( HDC hdc )
|
||
|
|
{
|
||
|
|
SetBkColor ( hdc, GetSysColor(COLOR_WINDOW) );
|
||
|
|
SetTextColor ( hdc, GetSysColor(COLOR_WINDOWTEXT) );
|
||
|
|
}
|
||
|
|
|
||
|
|
void PaintText::PrintLines ()
|
||
|
|
{
|
||
|
|
int para = _layout.FirstPara();
|
||
|
|
int paLine = _layout.FirstLineInPara(); // line within paragraph
|
||
|
|
int paOffBeg; // line beginning offset within paragraph
|
||
|
|
int paOffEnd; // line end offset within paragraph
|
||
|
|
|
||
|
|
int line = 0; // line # counting from top of window
|
||
|
|
int left = cpLeftMargin - _layout.XBegin();
|
||
|
|
|
||
|
|
while (_layout.GetLineOffsets ( para, paLine, paOffBeg, paOffEnd ))
|
||
|
|
{
|
||
|
|
// print paragraph
|
||
|
|
do
|
||
|
|
{
|
||
|
|
// clip to the update rect
|
||
|
|
int top = _layout.Y ( line );
|
||
|
|
int bottom = top + _layout.CyChar();
|
||
|
|
|
||
|
|
if ( top <= rcPaint.bottom && bottom >= rcPaint.top)
|
||
|
|
{
|
||
|
|
int cwcLine = __min ( BUFLEN, paOffEnd - paOffBeg );
|
||
|
|
if (!TheModel.GetLine( para, paOffBeg, cwcLine, LineBuffer ))
|
||
|
|
return;
|
||
|
|
|
||
|
|
cwcLine = TrimEOL( LineBuffer, cwcLine );
|
||
|
|
|
||
|
|
if ( 0 == cwcLine )
|
||
|
|
{
|
||
|
|
// to make selections look better...
|
||
|
|
wcscpy(LineBuffer,L" ");
|
||
|
|
cwcLine = 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
Win4Assert( cwcLine >= 0 );
|
||
|
|
|
||
|
|
if ( _Selection.IsInSelection( para ) )
|
||
|
|
{
|
||
|
|
if ( ( para > _Selection.ParaStart() ) &&
|
||
|
|
( para < _Selection.ParaEnd() ) )
|
||
|
|
{
|
||
|
|
EnableHilite( hdc );
|
||
|
|
TabbedTextOut( hdc, left, top, LineBuffer, cwcLine,
|
||
|
|
0, 0, left );
|
||
|
|
DisableHilite( hdc );
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
int l = left;
|
||
|
|
for ( int c = 0; c < cwcLine; c++ )
|
||
|
|
{
|
||
|
|
if ( _Selection.IsInSelection( para, c + paOffBeg ) )
|
||
|
|
EnableHilite( hdc );
|
||
|
|
LONG dim = TabbedTextOut( hdc, l, top,
|
||
|
|
LineBuffer + c, 1,
|
||
|
|
0, 0, left );
|
||
|
|
DisableHilite( hdc );
|
||
|
|
l += LOWORD(dim);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
TabbedTextOut( hdc, left, top, LineBuffer, cwcLine,
|
||
|
|
0, 0, left );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
line++;
|
||
|
|
if (line >= _layout.MaxLines())
|
||
|
|
return;
|
||
|
|
paLine++;
|
||
|
|
} while (_layout.GetLineOffsets( para, paLine, paOffBeg, paOffEnd ));
|
||
|
|
|
||
|
|
// next paragraph
|
||
|
|
para++;
|
||
|
|
paLine = 0;
|
||
|
|
}
|
||
|
|
} //PrintLines
|
||
|
|
|
||
|
|
void PaintText::HiliteHits ()
|
||
|
|
{
|
||
|
|
TheModel.HiliteAll( TRUE );
|
||
|
|
|
||
|
|
if ( TheModel.FirstHit() )
|
||
|
|
{
|
||
|
|
do
|
||
|
|
{
|
||
|
|
if ( !TheModel.isSavedCurrent() )
|
||
|
|
PrintCurrentHit( FALSE );
|
||
|
|
}
|
||
|
|
while( TheModel.NextHit() );
|
||
|
|
|
||
|
|
TheModel.RestoreHilite();
|
||
|
|
}
|
||
|
|
|
||
|
|
TheModel.HiliteAll( FALSE );
|
||
|
|
|
||
|
|
PrintCurrentHit( TRUE );
|
||
|
|
} //HiliteHits
|
||
|
|
|
||
|
|
const int WORDBUFLEN = 80;
|
||
|
|
static WCHAR WordBuffer [WORDBUFLEN];
|
||
|
|
|
||
|
|
void PaintText::PrintCurrentHit( BOOL fCurrent )
|
||
|
|
{
|
||
|
|
if ( fCurrent )
|
||
|
|
EnableHitHilite( hdc );
|
||
|
|
else
|
||
|
|
EnableNonCurrentHitHilite( hdc );
|
||
|
|
|
||
|
|
int cPos = TheModel.GetPositionCount();
|
||
|
|
int iPos = 0;
|
||
|
|
Position pos = TheModel.GetPosition(iPos);
|
||
|
|
|
||
|
|
int left = cpLeftMargin - _layout.XBegin();
|
||
|
|
|
||
|
|
while ( iPos < cPos )
|
||
|
|
{
|
||
|
|
int curPara = pos.Para();
|
||
|
|
|
||
|
|
if ( curPara > _layout.LastPara() )
|
||
|
|
break;
|
||
|
|
|
||
|
|
if (curPara >= _layout.FirstPara())
|
||
|
|
{
|
||
|
|
int paLine; // line within paragraph
|
||
|
|
int paOffBeg; // line beginning offset within paragraph
|
||
|
|
int paOffEnd; // line end offset within paragraph
|
||
|
|
|
||
|
|
_layout.Locate ( curPara, pos.BegOff(), paLine, paOffBeg, paOffEnd );
|
||
|
|
|
||
|
|
int line = _layout.LineNumber ( curPara, paLine );
|
||
|
|
|
||
|
|
// Output the line with highlights
|
||
|
|
|
||
|
|
int cwcLine = __min ( BUFLEN, paOffEnd - paOffBeg );
|
||
|
|
if (!TheModel.GetLine (curPara, paOffBeg, cwcLine, LineBuffer ))
|
||
|
|
break;
|
||
|
|
|
||
|
|
cwcLine = TrimEOL( LineBuffer, cwcLine );
|
||
|
|
|
||
|
|
int top = _layout.Y (line);
|
||
|
|
|
||
|
|
do
|
||
|
|
{
|
||
|
|
int cwc = __min( pos.Len(), WORDBUFLEN);
|
||
|
|
TheModel.GetWord( curPara, pos.BegOff(), cwc, WordBuffer );
|
||
|
|
Win4Assert ( cwc >= 0 );
|
||
|
|
|
||
|
|
// Find out how much space it takes before the highlight
|
||
|
|
|
||
|
|
DWORD dwExt = GetTabbedTextExtent ( hdc,
|
||
|
|
LineBuffer,
|
||
|
|
pos.BegOff() - paOffBeg,
|
||
|
|
0, 0 );
|
||
|
|
|
||
|
|
// Print hilighted text
|
||
|
|
|
||
|
|
TabbedTextOut ( hdc,
|
||
|
|
left + LOWORD(dwExt),
|
||
|
|
top,
|
||
|
|
WordBuffer,
|
||
|
|
cwc,
|
||
|
|
0, 0,
|
||
|
|
left );
|
||
|
|
|
||
|
|
iPos++;
|
||
|
|
if (iPos >= cPos)
|
||
|
|
break;
|
||
|
|
pos = TheModel.GetPosition(iPos);
|
||
|
|
|
||
|
|
} while ( pos.Para() == curPara );
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
iPos++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
DisableHilite( hdc );
|
||
|
|
} //PrintCurrentHit
|
||
|
|
|