/* IaOra KWin window decoration
  Copyright (C) 2006 Laurent Montel <lmontel@mandriva.com>
  based on plastik code
  Copyright (C) 2003-2005 Sandro Giessl <sandro@giessl.com>

  based on the window decoration "Web":
  Copyright (C) 2001 Rik Hemsley (rikkus) <rik@kde.org>

  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; see the file COPYING.  If not, write to
  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  Boston, MA 02110-1301, USA.
 */

#include <tqbitmap.h>
#include <tqpainter.h>
#include <tqpixmap.h>
#include <kpixmap.h>
#include <kpixmapeffect.h>
#include <tqtimer.h>

#include "iaorabutton.h"
#include "iaorabutton.moc"
#include "iaoraclient.h"
#include "misc.h"

namespace KWinIaOra
{


IaOraButton::IaOraButton(ButtonType type, IaOraClient *parent, const char *name)
    : KCommonDecorationButton(type, parent, name),
    m_client(parent),
    m_iconType(NumButtonIcons),
    hover(false)
{
    setBackgroundMode(NoBackground);

}

IaOraButton::~IaOraButton()
{
}

void IaOraButton::reset(unsigned long changed)
{
    if (changed&DecorationReset || changed&ManualReset || changed&SizeChange || changed&StateChange) {
        switch (type() ) {
            case CloseButton:
                m_iconType = CloseIcon;
                break;
            case HelpButton:
                m_iconType = HelpIcon;
                break;
            case MinButton:
                m_iconType = MinIcon;
                break;
            case MaxButton:
                if (isOn()) {
                    m_iconType = MaxRestoreIcon;
                } else {
                    m_iconType = MaxIcon;
                }
                break;
            case OnAllDesktopsButton:
                if (isOn()) {
                    m_iconType = NotOnAllDesktopsIcon;
                } else {
                    m_iconType = OnAllDesktopsIcon;
                }
                break;
            case ShadeButton:
                if (isOn()) {
                    m_iconType = UnShadeIcon;
                } else {
                    m_iconType = ShadeIcon;
                }
                break;
            case AboveButton:
                if (isOn()) {
                    m_iconType = NoKeepAboveIcon;
                } else {
                    m_iconType = KeepAboveIcon;
                }
                break;
            case BelowButton:
                if (isOn()) {
                    m_iconType = NoKeepBelowIcon;
                } else {
                    m_iconType = KeepBelowIcon;
                }
                break;
            default:
                m_iconType = NumButtonIcons; // empty...
                break;
        }

        this->update();
    }
}


void IaOraButton::enterEvent(TQEvent *e)
{
    TQButton::enterEvent(e);

    hover = true;
    repaint(false);
}

void IaOraButton::leaveEvent(TQEvent *e)
{
    TQButton::leaveEvent(e);

    hover = false;
    repaint(false);
}

void IaOraButton::drawButton(TQPainter *painter)
{
   TQRect r(0,0,width(),height());

    bool active = m_client->isActive();
    KPixmap tempKPixmap;

    TQPixmap buffer;
    buffer.resize(width(), height());
    TQPainter bP(&buffer);

    // fake the titlebar background
    bP.drawTiledPixmap(0, 0, width(), width(), /*define color*/m_client->getTitleBarTile(active) );
    if (type() == MenuButton)
    {
        TQPixmap menuIcon(m_client->icon().pixmap( TQIconSet::Small, TQIconSet::Normal));
        if (width() < menuIcon.width() || height() < menuIcon.height() ) {
            menuIcon.convertFromImage( menuIcon.convertToImage().smoothScale(width(), height()));
        }
        bP.drawPixmap((width()-menuIcon.width())/2, (height()-menuIcon.height())/2, menuIcon);
    }
    else
    {
        int dX,dY;
        const TQBitmap &icon = Handler()->buttonBitmap(m_iconType, size(), decoration()->isToolWindow() );
        dX = r.x()+(r.width()-icon.width())/2;
        dY = r.y()+(r.height()-icon.height())/2;
        if (isDown() ) {
            dY++;
        }
#if 0
        if(!isDown() && Handler()->titleShadow() ) {
            TQColor shadowColor;
            if (tqGray(Handler()->getColor(TitleFont,active).rgb()) < 100)
                shadowColor = TQColor(255, 255, 255);
            else
                shadowColor = TQColor(0,0,0);
            //bP.setPen(alphaBlendColors(sourfaceTop, shadowColor, 180) );
            bP.drawPixmap(dX+1, dY+1, icon);
        }
#endif
        bP.setPen(Handler()->getColor(TitleFont,hover ? false : active) );
        bP.drawPixmap(dX, dY, icon,0,0,icon.width(),icon.height()/2);
	bP.setPen(TQColor("#CFD7DF") );
        bP.drawPixmap(dX, dY+icon.height()/2, icon,0,icon.height()/2,icon.width(),icon.height());
    }
    bP.end();
    painter->drawPixmap(0, 0, buffer);
}

TQBitmap IconEngine::icon(ButtonIcon icon, int size)
{
    if (size%2 == 0)
        --size;

    TQBitmap bitmap(size,size);
    bitmap.fill(TQt::color0);
    TQPainter p(&bitmap);

    p.setPen(TQt::color1);

    TQRect r = bitmap.rect();

    // line widths
    int lwTitleBar = 1;
    if (r.width() > 16) {
        lwTitleBar = 4;
    } else if (r.width() > 4) {
        lwTitleBar = 2;
    }
    int lwArrow = 1;
    if (r.width() > 16) {
        lwArrow = 4;
    } else if (r.width() > 7) {
        lwArrow = 2;
    }

    //TQColor col1( "#FFFFFF" );
    //TQColor col2( "#CFD7DF" );

    switch(icon) {
        case CloseIcon:
        {
            int lineWidth = 1;
            if (r.width() > 16) {
                lineWidth = 3;
            } else if (r.width() > 4) {
                lineWidth = 2;
            }

            drawObject(p, DiagonalLine, r.x(), r.y(), r.width(), lineWidth);
            drawObject(p, CrossDiagonalLine, r.x(), r.bottom(), r.width(), lineWidth);

            break;
        }

        case MaxIcon:
        {
            int lineWidth2 = 1; // frame
            if (r.width() > 16) {
                lineWidth2 = 2;
            } else if (r.width() > 4) {
                lineWidth2 = 1;
            }

            drawObject(p, HorizontalLine, r.x(), r.top(), r.width(), lwTitleBar);
            drawObject(p, HorizontalLine, r.x(), r.bottom()-(lineWidth2-1), r.width(), lineWidth2);
            drawObject(p, VerticalLine, r.x(), r.top(), r.height(), lineWidth2);
            drawObject(p, VerticalLine, r.right()-(lineWidth2-1), r.top(), r.height(), lineWidth2);

            break;
        }

        case MaxRestoreIcon:
        {
            int lineWidth2 = 1; // frame
            if (r.width() > 16) {
                lineWidth2 = 2;
            } else if (r.width() > 4) {
                lineWidth2 = 1;
            }

            int margin1, margin2;
            margin1 = margin2 = lineWidth2*2;
            if (r.width() < 8)
                margin1 = 1;

            // background window
            drawObject(p, HorizontalLine, r.x(), r.top(), r.width()-margin1+1 +3 , lineWidth2);
            drawObject(p, HorizontalLine, r.right()-margin2, r.bottom()-(lineWidth2-1)/*-margin1*/, margin2, lineWidth2);
            drawObject(p, VerticalLine, r.x(), r.top(), margin2+3, lineWidth2);
            drawObject(p, VerticalLine, r.right()-(lineWidth2-1), r.top(), r.height()-margin1+3, lineWidth2);

            // foreground window
            drawObject(p, HorizontalLine, r.x(), r.top()+margin2, r.width()-margin2, lwTitleBar);
            drawObject(p, HorizontalLine, r.x(), r.bottom()-(lineWidth2-1), r.width()-margin2, lineWidth2);
            drawObject(p, VerticalLine, r.x(), r.top()+margin2, r.height(), lineWidth2);
            drawObject(p, VerticalLine, r.right()-(lineWidth2-1)-margin2, r.top()+margin2, r.height(), lineWidth2);
            break;
        }

        case MinIcon:
        {
            int posY = r.height()/2-(lwTitleBar-1);

            drawObject(p, HorizontalLine, r.x()+1,posY, r.width()-2, lwTitleBar);
            //grey 2
            //p.setPen( col2 );
            p.drawLine(r.x(),posY+1, r.x()+r.width()-1, posY+1);
            p.drawLine(r.x()+1, posY+2, r.x()+r.width()-2, posY+2);

            break;
        }

        case HelpIcon:
        {
            int center = r.x()+r.width()/2 -1;
            int side = r.width()/4;

            // paint a question mark... code is quite messy, to be cleaned up later...! :o

            if (r.width() > 16) {
                int lineWidth = 3;

                // top bar
                drawObject(p, HorizontalLine, center-side+3, r.y(), 2*side-3-1, lineWidth);
                // top bar rounding
                drawObject(p, CrossDiagonalLine, center-side-1, r.y()+5, 6, lineWidth);
                drawObject(p, DiagonalLine, center+side-3, r.y(), 5, lineWidth);
                // right bar
                drawObject(p, VerticalLine, center+side+2-lineWidth, r.y()+3, r.height()-(2*lineWidth+side+2+1), lineWidth);
                // bottom bar
                drawObject(p, CrossDiagonalLine, center, r.bottom()-2*lineWidth, side+2, lineWidth);
                drawObject(p, HorizontalLine, center, r.bottom()-3*lineWidth+2, lineWidth, lineWidth);
                // the dot
                drawObject(p, HorizontalLine, center, r.bottom()-(lineWidth-1), lineWidth, lineWidth);
            } else if (r.width() > 8) {
                int lineWidth = 2;

                // top bar
                drawObject(p, HorizontalLine, center-(side-1), r.y(), 2*side-1, lineWidth);
                // top bar rounding
                if (r.width() > 9) {
                    drawObject(p, CrossDiagonalLine, center-side-1, r.y()+3, 3, lineWidth);
                } else {
                    drawObject(p, CrossDiagonalLine, center-side-1, r.y()+2, 3, lineWidth);
                }
                drawObject(p, DiagonalLine, center+side-1, r.y(), 3, lineWidth);
                // right bar
                drawObject(p, VerticalLine, center+side+2-lineWidth, r.y()+2, r.height()-(2*lineWidth+side+1), lineWidth);
                // bottom bar
                drawObject(p, CrossDiagonalLine, center, r.bottom()-2*lineWidth+1, side+2, lineWidth);
                // the dot
                drawObject(p, HorizontalLine, center, r.bottom()-(lineWidth-1), lineWidth, lineWidth);
            } else {
                int lineWidth = 1;

                // top bar
                drawObject(p, HorizontalLine, center-(side-1), r.y(), 2*side, lineWidth);
                // top bar rounding
                drawObject(p, CrossDiagonalLine, center-side-1, r.y()+1, 2, lineWidth);
                // right bar
                drawObject(p, VerticalLine, center+side+1, r.y(), r.height()-(side+2+1), lineWidth);
                // bottom bar
                drawObject(p, CrossDiagonalLine, center, r.bottom()-2, side+2, lineWidth);
                // the dot
                drawObject(p, HorizontalLine, center, r.bottom(), 1, 1);
            }

            break;
        }

        case NotOnAllDesktopsIcon:
        {
            int lwMark = r.width()-lwTitleBar*2-2;
            if (lwMark < 1)
                lwMark = 3;

            drawObject(p, HorizontalLine, r.x()+(r.width()-lwMark)/2, r.y()+(r.height()-lwMark)/2, lwMark, lwMark);

            // Fall through to OnAllDesktopsIcon intended!
        }
        case OnAllDesktopsIcon:
        {
            // horizontal bars
            drawObject(p, HorizontalLine, r.x()+lwTitleBar, r.y(), r.width()-2*lwTitleBar, lwTitleBar);
            drawObject(p, HorizontalLine, r.x()+lwTitleBar, r.bottom()-(lwTitleBar-1), r.width()-2*lwTitleBar, lwTitleBar);
            // vertical bars
            drawObject(p, VerticalLine, r.x(), r.y()+lwTitleBar, r.height()-2*lwTitleBar, lwTitleBar);
            drawObject(p, VerticalLine, r.right()-(lwTitleBar-1), r.y()+lwTitleBar, r.height()-2*lwTitleBar, lwTitleBar);


            break;
        }

        case NoKeepAboveIcon:
        {
            int center = r.x()+r.width()/2;

            // arrow
            drawObject(p, CrossDiagonalLine, r.x(), center+2*lwArrow, center-r.x(), lwArrow);
            drawObject(p, DiagonalLine, r.x()+center, r.y()+1+2*lwArrow, center-r.x(), lwArrow);
            if (lwArrow>1)
                drawObject(p, HorizontalLine, center-(lwArrow-2), r.y()+2*lwArrow, (lwArrow-2)*2, lwArrow);

            // Fall through to KeepAboveIcon intended!
        }
        case KeepAboveIcon:
        {
            int center = r.x()+r.width()/2;

            // arrow
            drawObject(p, CrossDiagonalLine, r.x(), center, center-r.x(), lwArrow);
            drawObject(p, DiagonalLine, r.x()+center, r.y()+1, center-r.x(), lwArrow);
            if (lwArrow>1)
                drawObject(p, HorizontalLine, center-(lwArrow-2), r.y(), (lwArrow-2)*2, lwArrow);

            break;
        }

        case NoKeepBelowIcon:
        {
            int center = r.x()+r.width()/2;

            // arrow
            drawObject(p, DiagonalLine, r.x(), center-2*lwArrow, center-r.x(), lwArrow);
            drawObject(p, CrossDiagonalLine, r.x()+center, r.bottom()-1-2*lwArrow, center-r.x(), lwArrow);
            if (lwArrow>1)
                drawObject(p, HorizontalLine, center-(lwArrow-2), r.bottom()-(lwArrow-1)-2*lwArrow, (lwArrow-2)*2, lwArrow);

            // Fall through to KeepBelowIcon intended!
        }
        case KeepBelowIcon:
        {
            int center = r.x()+r.width()/2;

            // arrow
            drawObject(p, DiagonalLine, r.x(), center, center-r.x(), lwArrow);
            drawObject(p, CrossDiagonalLine, r.x()+center, r.bottom()-1, center-r.x(), lwArrow);
            if (lwArrow>1)
                drawObject(p, HorizontalLine, center-(lwArrow-2), r.bottom()-(lwArrow-1), (lwArrow-2)*2, lwArrow);

            break;
        }

        case ShadeIcon:
        {
            drawObject(p, HorizontalLine, r.x(), r.y(), r.width(), lwTitleBar);

            break;
        }

        case UnShadeIcon:
        {
            int lw1 = 1;
            int lw2 = 1;
            if (r.width() > 16) {
                lw1 = 4;
                lw2 = 2;
            } else if (r.width() > 7) {
                lw1 = 2;
                lw2 = 1;
            }

            int h = TQMAX( (r.width()/2), (lw1+2*lw2) );

            // horizontal bars
            drawObject(p, HorizontalLine, r.x(), r.y(), r.width(), lw1);
            drawObject(p, HorizontalLine, r.x(), r.x()+h-(lw2-1), r.width(), lw2);
            // vertical bars
            drawObject(p, VerticalLine, r.x(), r.y(), h, lw2);
            drawObject(p, VerticalLine, r.right()-(lw2-1), r.y(), h, lw2);

            break;
        }

        default:
            break;
    }

    p.end();

    bitmap.setMask(bitmap);

    return bitmap;
}

void IconEngine::drawObject(TQPainter &p, Object object, int x, int y, int length, int lineWidth)
{
    switch(object) {
        case DiagonalLine:
            if (lineWidth <= 1) {
                for (int i = 0; i < length; ++i) {
                    p.drawPoint(x+i,y+i);
                }
            } else if (lineWidth <= 2) {
                for (int i = 0; i < length; ++i) {
                    p.drawPoint(x+i,y+i);
                }
                for (int i = 0; i < (length-1); ++i) {
                    p.drawPoint(x+1+i,y+i);
                    p.drawPoint(x+i,y+1+i);
                }
            } else {
                for (int i = 1; i < (length-1); ++i) {
                    p.drawPoint(x+i,y+i);
                }
                for (int i = 0; i < (length-1); ++i) {
                    p.drawPoint(x+1+i,y+i);
                    p.drawPoint(x+i,y+1+i);
                }
                for (int i = 0; i < (length-2); ++i) {
                    p.drawPoint(x+2+i,y+i);
                    p.drawPoint(x+i,y+2+i);
                }
            }
            break;
        case CrossDiagonalLine:
            if (lineWidth <= 1) {
                for (int i = 0; i < length; ++i) {
                    p.drawPoint(x+i,y-i);
                }
            } else if (lineWidth <= 2) {
                for (int i = 0; i < length; ++i) {
                    p.drawPoint(x+i,y-i);
                }
                for (int i = 0; i < (length-1); ++i) {
                    p.drawPoint(x+1+i,y-i);
                    p.drawPoint(x+i,y-1-i);
                }
            } else {
                for (int i = 1; i < (length-1); ++i) {
                    p.drawPoint(x+i,y-i);
                }
                for (int i = 0; i < (length-1); ++i) {
                    p.drawPoint(x+1+i,y-i);
                    p.drawPoint(x+i,y-1-i);
                }
                for (int i = 0; i < (length-2); ++i) {
                    p.drawPoint(x+2+i,y-i);
                    p.drawPoint(x+i,y-2-i);
                }
            }
            break;
        case HorizontalLine:
            for (int i = 0; i < lineWidth; ++i) {
                p.drawLine(x,y+i, x+length-1, y+i);
            }
            break;
        case VerticalLine:
            for (int i = 0; i < lineWidth; ++i) {
                p.drawLine(x+i,y, x+i, y+length-1);
            }
            break;
        default:
            break;
    }
}

} // KWinIaOra