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503 lines
13 KiB
503 lines
13 KiB
/*
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* Copyright (C) 1999-2002 Bernd Gehrmann
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* bernd@mail.berlios.de
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "diffview.h"
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#include <tqpainter.h>
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#include <tqscrollbar.h>
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#include <tqpixmap.h>
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#include <tqregexp.h>
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#include <tqstyle.h>
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#include <tdeapplication.h>
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#include <tdeconfig.h>
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#include <kdebug.h>
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#include <tdeglobalsettings.h>
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#include <tdelocale.h>
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class DiffViewItem
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{
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public:
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TQString line;
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DiffView::DiffType type;
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bool inverted;
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int no;
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};
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int DiffViewItemList::compareItems(TQPtrCollection::Item item1, TQPtrCollection::Item item2)
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{
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return (static_cast<DiffViewItem*>(item1)->no
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== static_cast<DiffViewItem*>(item2)->no)? 0 : 1;
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}
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const int DiffView::BORDER = 7;
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DiffView::DiffView( TDEConfig& cfg, bool withlinenos, bool withmarker,
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TQWidget *parent, const char *name )
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: QtTableView(parent, name, WRepaintNoErase)
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, partConfig(cfg)
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{
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setNumRows(0);
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setNumCols( 1 + (withlinenos?1:0) + (withmarker?1:0) );
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setTableFlags( Tbl_autoVScrollBar|Tbl_autoHScrollBar|
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Tbl_smoothVScrolling );
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setFrameStyle( TQFrame::WinPanel | TQFrame::Sunken );
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setBackgroundMode( PaletteBase );
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setWFlags( WResizeNoErase );
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partConfig.setGroup("LookAndFeel");
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setFont(partConfig.readFontEntry("DiffFont"));
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TQFontMetrics fm(font());
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setCellHeight(fm.lineSpacing());
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setCellWidth(0);
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textwidth = 0;
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partConfig.setGroup("General");
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m_tabWidth = partConfig.readNumEntry("TabWidth", 8);
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items.setAutoDelete(true);
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linenos = withlinenos;
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marker = withmarker;
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partConfig.setGroup("Colors");
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TQColor defaultColor=TQColor(237, 190, 190);
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diffChangeColor=partConfig.readColorEntry("DiffChange",&defaultColor);
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defaultColor=TQColor(190, 190, 237);
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diffInsertColor=partConfig.readColorEntry("DiffInsert",&defaultColor);
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defaultColor=TQColor(190, 237, 190);
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diffDeleteColor=partConfig.readColorEntry("DiffDelete",&defaultColor);
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}
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void DiffView::setFont(const TQFont &font)
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{
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QtTableView::setFont(font);
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TQFontMetrics fm(font);
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setCellHeight(fm.lineSpacing());
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}
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void DiffView::setPartner(DiffView *other)
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{
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partner = other;
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if (partner)
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{
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connect( verticalScrollBar(), TQ_SIGNAL(valueChanged(int)),
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TQ_SLOT(vertPositionChanged(int)) );
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connect( verticalScrollBar(), TQ_SIGNAL(sliderMoved(int)),
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TQ_SLOT(vertPositionChanged(int)) );
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connect( horizontalScrollBar(), TQ_SIGNAL(valueChanged(int)),
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TQ_SLOT(horzPositionChanged(int)) );
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connect( horizontalScrollBar(), TQ_SIGNAL(sliderMoved(int)),
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TQ_SLOT(horzPositionChanged(int)) );
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}
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}
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void DiffView::vertPositionChanged(int val)
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{
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if (partner)
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partner->setYOffset(TQMIN(val,partner->maxYOffset()));
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}
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void DiffView::horzPositionChanged(int val)
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{
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if (partner)
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partner->setXOffset(TQMIN(val,partner->maxXOffset()));
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}
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// *offset methods are only for views withlineno
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void DiffView::removeAtOffset(int offset)
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{
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items.remove(offset);
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setNumRows(numRows()-1);
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}
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void DiffView::insertAtOffset(const TQString &line, DiffType type, int offset)
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{
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DiffViewItem *item = new DiffViewItem;
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item->line = line;
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item->type = type;
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item->no = -1;
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item->inverted = false;
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items.insert(offset, item);
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setNumRows(numRows()+1);
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}
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void DiffView::setCenterOffset(int offset)
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{
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if (!rowIsVisible(offset))
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{
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int visiblerows = viewHeight()/cellHeight(0);
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setTopCell( TQMAX(0, offset - visiblerows/2) );
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}
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}
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void DiffView::addLine(const TQString &line, DiffType type, int no)
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{
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TQFont f(font());
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f.setBold(true);
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TQFontMetrics fmbold(f);
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TQFontMetrics fm(font());
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// calculate textwidth based on 'line' where tabs are expanded
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//
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// *Please note*
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// For some fonts, e.g. "Clean", is fm.maxWidth() greater than
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// fmbold.maxWidth().
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TQString copy(line);
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const int numTabs = copy.contains('\t', false);
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copy.replace( TQRegExp("\t"), "");
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const int tabSize = m_tabWidth * TQMAX(fm.maxWidth(), fmbold.maxWidth());
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const int copyWidth = TQMAX(fm.width(copy), fmbold.width(copy));
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textwidth = TQMAX(textwidth, copyWidth + numTabs * tabSize);
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DiffViewItem *item = new DiffViewItem;
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item->line = line;
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item->type = type;
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item->no = no;
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item->inverted = false;
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items.append(item);
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setNumRows(numRows()+1);
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}
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TQString DiffView::stringAtOffset(int offset)
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{
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if (offset >= (int)items.count())
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{
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kdDebug(8050) << "Internal error: lineAtOffset" << endl;
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}
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return items.at(offset)->line;
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}
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int DiffView::count()
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{
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return items.count();
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}
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int DiffView::findLine(int lineno)
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{
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int offset;
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DiffViewItem tmp;
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tmp.no = lineno;
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if ( (offset = items.find(&tmp)) == -1)
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{
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kdDebug(8050) << "Internal Error: Line " << lineno << " not found" << endl;
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return -1;
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}
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return offset;
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}
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void DiffView::setInverted(int lineno, bool inverted)
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{
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int offset;
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if ( (offset = findLine(lineno)) != -1)
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items.at(offset)->inverted = inverted;
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}
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void DiffView::setCenterLine(int lineno)
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{
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int offset;
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if ( (offset = findLine(lineno)) != -1)
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setCenterOffset(offset);
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}
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TQString DiffView::stringAtLine(int lineno)
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{
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int pos;
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if ( (pos = findLine(lineno)) != -1 )
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return items.at(pos)->line;
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else
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return TQString();
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}
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TQByteArray DiffView::compressedContent()
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{
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TQByteArray res(items.count());
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TQPtrListIterator<DiffViewItem> it(items);
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int i=0;
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for (; it.current(); ++it)
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{
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switch (it.current()->type)
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{
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case Change: res[i] = 'C'; break;
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case Insert: res[i] = 'I'; break;
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case Delete: res[i] = 'D'; break;
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case Neutral: res[i] = 'N'; break;
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case Unchanged:res[i] = 'U'; break;
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default: res[i] = ' ';
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}
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++i;
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}
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return res;
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}
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int DiffView::cellWidth(int col)
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{
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if (col == 0 && linenos)
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{
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TQFontMetrics fm(font());
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return fm.width("10000");
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}
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else if (marker && (col == 0 || col == 1))
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{
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TQFontMetrics fm( fontMetrics() );
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return TQMAX(TQMAX( fm.width(i18n("Delete")),
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fm.width(i18n("Insert"))),
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fm.width(i18n("Change")))+2*BORDER;
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}
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else
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{
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int rest = (linenos || marker)? cellWidth(0) : 0;
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if (linenos && marker)
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rest += cellWidth(1);
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return TQMAX(textwidth, viewWidth()-rest);
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}
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}
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TQSize DiffView::sizeHint() const
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{
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TQFontMetrics fm(font());
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return TQSize( 4*fm.width("0123456789"), fm.lineSpacing()*8 );
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}
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void DiffView::paintCell(TQPainter *p, int row, int col)
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{
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TQFontMetrics fm(font());
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p->setTabStops(m_tabWidth * fm.maxWidth());
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DiffViewItem *item = items.at(row);
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int width = cellWidth(col);
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int height = cellHeight();
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TQColor backgroundColor;
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bool inverted;
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int align;
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int innerborder;
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TQString str;
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TQFont oldFont(p->font());
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if (item->type==Separator)
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{
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backgroundColor = TDEGlobalSettings::highlightColor();
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p->setPen(TDEGlobalSettings::highlightedTextColor());
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inverted = false;
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align = AlignLeft;
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innerborder = 0;
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if (col == (linenos?1:0) + (marker?1:0))
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str = item->line;
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TQFont f(oldFont);
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f.setBold(true);
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p->setFont(f);
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}
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else if (col == 0 && linenos)
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{
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backgroundColor = TDEGlobalSettings::highlightColor();
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p->setPen(TDEGlobalSettings::highlightedTextColor());
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inverted = false;
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align = AlignLeft;
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innerborder = 0;
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if (item->no == -1)
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str = "+++++";
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else
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str.setNum(item->no);
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}
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else if (marker && (col == 0 || col == 1))
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{
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backgroundColor = TDEGlobalSettings::alternateBackgroundColor();
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p->setPen(TDEGlobalSettings::textColor());
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inverted = false;
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align = AlignRight;
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innerborder = BORDER;
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str = (item->type==Change)? i18n("Change")
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: (item->type==Insert)? i18n("Insert")
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: (item->type==Delete)? i18n("Delete") : TQString();
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}
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else
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{
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backgroundColor =
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(item->type==Change)? diffChangeColor
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: (item->type==Insert)? diffInsertColor
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: (item->type==Delete)? diffDeleteColor
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: (item->type==Neutral)? TDEGlobalSettings::alternateBackgroundColor() : TDEGlobalSettings::baseColor();
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p->setPen(TDEGlobalSettings::textColor());
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inverted = item->inverted;
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align = AlignLeft;
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innerborder = 0;
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str = item->line;
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}
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if (inverted)
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{
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p->setPen(backgroundColor);
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backgroundColor = TDEGlobalSettings::textColor();
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TQFont f(oldFont);
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f.setBold(true);
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p->setFont(f);
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}
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p->fillRect(0, 0, width, height, backgroundColor);
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p->drawText(innerborder, 0, width-2*innerborder, height, align|ExpandTabs, str);
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p->setFont(oldFont);
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}
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void DiffView::wheelEvent(TQWheelEvent *e)
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{
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TQApplication::sendEvent(verticalScrollBar(), e);
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}
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DiffZoomWidget::DiffZoomWidget(TDEConfig& cfg, TQWidget *parent, const char *name)
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: TQFrame(parent, name)
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{
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setSizePolicy( TQSizePolicy( TQSizePolicy::Fixed, TQSizePolicy::Minimum ) );
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cfg.setGroup("Colors");
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TQColor defaultColor=TQColor(237, 190, 190);
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diffChangeColor=cfg.readColorEntry("DiffChange",&defaultColor);
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defaultColor=TQColor(190, 190, 237);
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diffInsertColor=cfg.readColorEntry("DiffInsert",&defaultColor);
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defaultColor=TQColor(190, 237, 190);
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diffDeleteColor=cfg.readColorEntry("DiffDelete",&defaultColor);
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}
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DiffZoomWidget::~DiffZoomWidget()
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{}
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void DiffZoomWidget::setDiffView(DiffView *view)
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{
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diffview = view;
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TQScrollBar *sb = const_cast<TQScrollBar*>(diffview->scrollBar());
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sb->installEventFilter(this);
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}
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TQSize DiffZoomWidget::sizeHint() const
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{
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return TQSize(25, style().pixelMetric(TQStyle::PM_ScrollBarExtent, this));
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}
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bool DiffZoomWidget::eventFilter(TQObject *o, TQEvent *e)
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{
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if (e->type() == TQEvent::Show
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|| e->type() == TQEvent::Hide
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|| e->type() == TQEvent::Resize)
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repaint();
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return TQFrame::eventFilter(o, e);
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}
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void DiffZoomWidget::paintEvent(TQPaintEvent *)
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{
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const TQScrollBar* scrollBar = diffview->scrollBar();
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if (!scrollBar)
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return;
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// only y and height are important
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const TQRect scrollBarGroove(scrollBar->isVisible()
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? style().querySubControlMetrics(TQStyle::CC_ScrollBar,
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scrollBar,
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TQStyle::SC_ScrollBarGroove)
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: rect());
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// draw rectangles at the positions of the differences
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const TQByteArray& lineTypes(diffview->compressedContent());
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TQPixmap pixbuf(width(), scrollBarGroove.height());
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pixbuf.fill(TDEGlobalSettings::baseColor());
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TQPainter p(&pixbuf, this);
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if (const unsigned int numberOfLines = lineTypes.size())
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{
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const double scale(((double) scrollBarGroove.height()) / numberOfLines);
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for (unsigned int index(0); index < numberOfLines;)
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{
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const char lineType(lineTypes[index]);
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// don't use tqRound() to avoid painting outside of the pixmap
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// (yPos1 must be lesser than scrollBarGroove.height())
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const int yPos1(static_cast<int>(index * scale));
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// search next line with different lineType
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for (++index; index < numberOfLines && lineType == lineTypes[index]; ++index)
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;
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TQColor color;
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switch (lineType)
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{
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case 'C':
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color = diffChangeColor;
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break;
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case 'I':
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color = diffInsertColor;
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break;
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case 'D':
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color = diffDeleteColor;
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break;
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case ' ':
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case 'N':
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color = TDEGlobalSettings::alternateBackgroundColor();
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break;
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}
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if (color.isValid())
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{
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const int yPos2(tqRound(index * scale));
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const int areaHeight((yPos2 != yPos1) ? yPos2 - yPos1 : 1);
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p.fillRect(0, yPos1, pixbuf.width(), areaHeight, TQBrush(color));
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}
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}
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}
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p.flush();
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bitBlt(this, 0, scrollBarGroove.y(), &pixbuf);
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}
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#include "diffview.moc"
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