kexirecordmarker.cpp

/* This file is part of the KDE project
   Copyright (C) 2002 Lucijan Busch <lucijan@gmx.at>
   Copyright (C) 2002 Till Busch <till@bux.at>
   Copyright (C) 2002 Daniel Molkentin <molkentin@kde.org>
   Copyright (C) 2003-2006 Jaroslaw Staniek <js@iidea.pl>
 
   This program is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library 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
   Library General Public License for more details.
 
   You should have received a copy of the GNU Library General Public License
   along with this program; see the file COPYING.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
*/
 
#include "kexirecordmarker.h"
 
#include <tqcolor.h>
#include <tqstyle.h>
#include <tqpixmap.h>
#include <tqpainter.h>
#include <tqimage.h>
#include <tqapplication.h>
 
#include <kdebug.h>
#include <kstaticdeleter.h>
 
#include <kexiutils/utils.h>
 
static KStaticDeleter<TQImage> KexiRecordMarker_pen_deleter, KexiRecordMarker_plus_deleter;
TQImage* KexiRecordMarker_pen = 0, *KexiRecordMarker_plus = 0;
 
static const unsigned char img_pen_data[] = {
    0x00,0x00,0x03,0x30,0x78,0x9c,0xfb,0xff,0xff,0x3f,0xc3,0x7f,0x32,0x30,
    0x10,0x80,0x88,0xff,0xe4,0xe8,0x85,0xe9,0xc7,0xc6,0x26,0x55,0x3f,0x3a,
    0x4d,0x8e,0x7e,0x72,0xfc,0x32,0xd2,0xf5,0xa3,0xeb,0xa5,0xb5,0x7e,0x5c,
    0xe9,0x85,0x54,0xfb,0xb1,0xa5,0x1b,0x52,0xdc,0x0e,0x00,0xf2,0xea,0x0a,
    0x13
};
static const unsigned char img_plus_data[] = {
    0x00,0x00,0x01,0x90,0x78,0x9c,0xfb,0xff,0xff,0x3f,0xc3,0x7f,0x28,0x86,
    0x82,0xff,0x50,0x0c,0x17,0x47,0xc7,0xd4,0x50,0x87,0x05,0xc0,0xd5,0xe1,
    0x10,0xa7,0x16,0x26,0xca,0x5e,0x7c,0xfe,0x20,0x47,0x1d,0xb2,0x5a,0x5c,
    0xea,0x40,0x72,0x00,0x03,0x6e,0x74,0x8c
};
 
static struct EmbedImage {
    int width, height, depth;
    const unsigned char *data;
    ulong compressed;
    int numColors;
    const TQRgb *colorTable;
    bool alpha;
    const char *name;
} embed_image[] = {
    { 17, 12, 32, (const unsigned char*)img_pen_data, 57, 0, 0, true, "tableview_pen.png" },
    { 10, 10, 32, (const unsigned char*)img_pen_data, 50, 0, 0, true, "tableview_plus.png" }
};
 
TQImage* getImg(const unsigned char* data, int id)
{
    TQByteArray baunzip;
    baunzip = tqUncompress( data, embed_image[id].compressed );
    TQImage *img = new TQImage( TQImage((uchar*)baunzip.data(),
            embed_image[id].width, embed_image[id].height,
            embed_image[id].depth, (TQRgb*)embed_image[id].colorTable,
            embed_image[id].numColors, TQImage::BigEndian
    ).copy() );
    if ( embed_image[id].alpha )
        img->setAlphaBuffer(true);
    return img;
}
 
static void initRecordMarkerImages()
{
    if (!KexiRecordMarker_pen) {
        KexiRecordMarker_pen_deleter.setObject( KexiRecordMarker_pen, getImg(img_pen_data, 0) );
        KexiRecordMarker_plus_deleter.setObject( KexiRecordMarker_plus, getImg(img_plus_data, 1) );
    }
}
 
//----------------------------------------------------------------

class KexiRecordMarker::Private
{
public:
    Private()
     : rowHeight(1)
     , offset(0)
     , currentRow(-1)
     , highlightedRow(-1)
     , editRow(-1)
     , rows(0)
     , selectionBackgroundColor(tqApp->palette().active().highlight())
     , showInsertRow(true)
    {
    }
    int rowHeight;
    int offset;
    int currentRow;
    int highlightedRow;
    int editRow;
    int rows;
    TQColor selectionBackgroundColor;
    bool showInsertRow : 1;
};
 
//----------------------------------------------------------------
 
KexiRecordMarker::KexiRecordMarker(TQWidget *parent, const char* name)
 : TQWidget(parent, name)
 , d( new Private() )
{
    initRecordMarkerImages();
}
 
KexiRecordMarker::~KexiRecordMarker()
{
    delete d;
}
 
TQImage* KexiRecordMarker::penImage()
{
    initRecordMarkerImages();
    return KexiRecordMarker_pen;
}
 
TQImage* KexiRecordMarker::plusImage()
{
    initRecordMarkerImages();
    return KexiRecordMarker_plus;
}
 
void KexiRecordMarker::addLabel(bool upd)
{
    d->rows++;
    if (upd)
        update();
}
 
void KexiRecordMarker::removeLabel(bool upd)
{
    if (d->rows > 0) {
        d->rows--;
        if (upd)
            update();
    }
}
 
void KexiRecordMarker::addLabels(int num, bool upd)
{
    d->rows += num;
    if (upd)
        update();
}
 
void KexiRecordMarker::clear(bool upd)
{
    d->rows=0;
    if (upd)
        update();
}
 
int KexiRecordMarker::rows() const
{
    if (d->showInsertRow)
        return d->rows +1;
    else
        return d->rows;
}
 
void KexiRecordMarker::paintEvent(TQPaintEvent *e)
{
    TQPainter p(this);
    TQRect r(e->rect());
 
    int first = (r.top()    + d->offset) / d->rowHeight;
    int last  = (r.bottom() + d->offset) / d->rowHeight;
    if(last > (d->rows-1+(d->showInsertRow?1:0)))
        last = d->rows-1+(d->showInsertRow?1:0);
 
    TQColorGroup selectedColorGroup(colorGroup());
    selectedColorGroup.setColor( TQColorGroup::Button, 
        KexiUtils::blendedColors( selectedColorGroup.color(TQColorGroup::Background), 
            d->selectionBackgroundColor, 2, 1) );
    selectedColorGroup.setColor( TQColorGroup::Background, 
        selectedColorGroup.color(TQColorGroup::Button) ); //set background color as well (e.g. for thinkeramik)
    TQColorGroup highlightedColorGroup(colorGroup());
    highlightedColorGroup.setColor( TQColorGroup::Button, 
        KexiUtils::blendedColors( highlightedColorGroup.color(TQColorGroup::Background), 
            d->selectionBackgroundColor, 4, 1) );
    highlightedColorGroup.setColor( TQColorGroup::Background, 
        highlightedColorGroup.color(TQColorGroup::Button) ); //set background color as well (e.g. for thinkeramik)
    for(int i=first; i <= last; i++)
    {
        int y = ((d->rowHeight * i)-d->offset);
        TQRect r(0, y, width(), d->rowHeight);
        p.drawRect(r);
        style().drawPrimitive( TQStyle::PE_HeaderSection, &p, r,
            (d->currentRow == i) ? selectedColorGroup : (d->highlightedRow == i ? highlightedColorGroup : colorGroup()), 
            TQStyle::Style_Raised | (isEnabled() ? TQStyle::Style_Enabled : 0));
    }
    if (d->editRow!=-1 && d->editRow >= first && d->editRow <= (last/*+1 for insert row*/)) {
        //show pen when editing
        int ofs = d->rowHeight / 4;
        int pos = ((d->rowHeight*(d->currentRow>=0?d->currentRow:0))-d->offset)-ofs/2+1;
        p.drawImage((d->rowHeight-KexiRecordMarker_pen->width())/2,
            (d->rowHeight-KexiRecordMarker_pen->height())/2+pos,*KexiRecordMarker_pen);
    }
    else if (d->currentRow >= first && d->currentRow <= last 
        && (!d->showInsertRow || (d->showInsertRow && d->currentRow < last)))/*don't display marker for 'insert' row*/ 
    {
        //show marker
        p.setBrush(colorGroup().foreground());
        p.setPen(TQPen(TQt::NoPen));
        TQPointArray points(3);
        int ofs = d->rowHeight / 4;
        int ofs2 = (width() - ofs) / 2 -1;
        int pos = ((d->rowHeight*d->currentRow)-d->offset)-ofs/2+2;
        points.putPoints(0, 3, ofs2, pos+ofs, ofs2 + ofs, pos+ofs*2, 
            ofs2,pos+ofs*3);
        p.drawPolygon(points);
//      kdDebug() <<"KexiRecordMarker::paintEvent(): POLYGON" << endl;
/*      int half = d->rowHeight / 2;
        points.setPoints(3, 2, pos + 2, width() - 5, pos + half, 2, pos + (2 * half) - 2);*/
    }
    if (d->showInsertRow && d->editRow < last
        && last == (d->rows-1+(d->showInsertRow?1:0)) ) {
        //show plus sign
        int pos = ((d->rowHeight*last)-d->offset)+(d->rowHeight-KexiRecordMarker_plus->height())/2;
//      p.drawImage((width()-d->plusImg.width())/2-1, pos, d->plusImg);
        p.drawImage((width()-KexiRecordMarker_plus->width())/2, pos, *KexiRecordMarker_plus);
    }
}
 
void KexiRecordMarker::setCurrentRow(int row)
{
    if (row == d->currentRow)
        return;
    int oldRow = d->currentRow;
    d->currentRow=row;
    
    if (oldRow != -1)
        update(0,(d->rowHeight*(oldRow))-d->offset-1, width()+2, d->rowHeight+2);
    if (d->currentRow != -1)
        update(0,(d->rowHeight*d->currentRow)-d->offset-1, width()+2, d->rowHeight+2);
}
 
void KexiRecordMarker::setHighlightedRow(int row)
{
    if (row == d->highlightedRow)
        return;
    int oldRow = d->highlightedRow;
    d->highlightedRow = row;
 
    if (oldRow != -1)
        update(0,(d->rowHeight*(oldRow))-d->offset-1, width()+2, d->rowHeight+2);
    if (d->currentRow != -1)
        update(0,(d->rowHeight*d->highlightedRow)-d->offset-1, width()+2, d->rowHeight+2);
}
 
void KexiRecordMarker::setOffset(int offset)
{
    int oldOff = d->offset;
    d->offset = offset;
    scroll(0,oldOff-offset);
}
 
void KexiRecordMarker::setCellHeight(int cellHeight)
{
    d->rowHeight = cellHeight;
}
 
void KexiRecordMarker::setEditRow(int row)
{
    d->editRow = row;
//TODO: update only needed area!
    update();
}
 
void KexiRecordMarker::showInsertRow(bool show)
{
    d->showInsertRow = show;
//TODO: update only needed area!
    update();
}
 
void KexiRecordMarker::setSelectionBackgroundColor(const TQColor &color)
{
    d->selectionBackgroundColor = color;
}
 
TQColor KexiRecordMarker::selectionBackgroundColor() const
{
    return d->selectionBackgroundColor;
}
 
#include "kexirecordmarker.moc"