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tdesdk/cervisia/diffview.cpp

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