tdegraphics/kolourpaint/widgets/kpcolortoolbar.cpp

/*
   Copyright (c) 2003,2004,2005 Clarence Dang <dang@kde.org>
   All rights reserved.

   Redistribution and use in source and binary forms, with or without
   modification, are permitted provided that the following conditions
   are met:

   1. Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
   2. Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

   THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/


#define DEBUG_KP_COLOR_TOOL_BAR 0


#include <kpcolortoolbar.h>

#include <qbitmap.h>
#include <qdrawutil.h>
#include <qframe.h>
#include <qlayout.h>
#include <qpainter.h>
#include <qsize.h>
#include <qtooltip.h>
#include <qwidget.h>

#include <kapplication.h>
#include <kcolordialog.h>
#include <kcolordrag.h>
#include <kconfig.h>
#include <kdebug.h>
#include <kiconloader.h>
#include <klocale.h>

#include <kpcolorsimilaritydialog.h>
#include <kpdefs.h>
#include <kpmainwindow.h>
#include <kppixmapfx.h>
#include <kptool.h>
#include <kpview.h>


/*
 * kpDualColorButton
 */

kpDualColorButton::kpDualColorButton (kpMainWindow *mainWindow,
                                      QWidget *parent, const char *name)
    : QFrame (parent, name, Qt::WNoAutoErase/*no flicker*/),
      m_mainWindow (mainWindow),
      m_backBuffer (0)
{
    setFrameStyle (QFrame::Panel | QFrame::Sunken);

    m_color [0] = kpColor (0, 0, 0);  // black
    m_color [1] = kpColor (255, 255, 255);  // white

    setAcceptDrops (true);
}

kpDualColorButton::~kpDualColorButton ()
{
    delete m_backBuffer; m_backBuffer = 0;
}


kpColor kpDualColorButton::color (int which) const
{
    if (which < 0 || which > 1)
    {
        kdWarning () << "kpDualColorButton::color (" << which
                     << ") - out of range" << endl;
        which = 0;
    }

    return m_color [which];
}

kpColor kpDualColorButton::foregroundColor () const
{
    return color (0);
}

kpColor kpDualColorButton::backgroundColor () const
{
    return color (1);
}


void kpDualColorButton::setColor (int which, const kpColor &color)
{
    if (which < 0 || which > 1)
    {
        kdWarning () << "kpDualColorButton::setColor (" << which
                     << ") - out of range" << endl;
        which = 0;
    }

    if (m_color [which] == color)
        return;

    m_oldColor [which] = m_color [which];
    m_color [which] = color;
    update ();

    if (which == 0)
        emit foregroundColorChanged (color);
    else
        emit backgroundColorChanged (color);
}

void kpDualColorButton::setForegroundColor (const kpColor &color)
{
    setColor (0, color);
}

void kpDualColorButton::setBackgroundColor (const kpColor &color)
{
    setColor (1, color);
}


// public
kpColor kpDualColorButton::oldForegroundColor () const
{
    return m_oldColor [0];
}

// public
kpColor kpDualColorButton::oldBackgroundColor () const
{
    return m_oldColor [1];
}


// public virtual [base QWidget]
QSize kpDualColorButton::sizeHint () const
{
    return QSize (52, 52);
}


// protected
QRect kpDualColorButton::swapPixmapRect () const
{
    QPixmap swapPixmap = UserIcon ("colorbutton_swap_16x16");

    return QRect (contentsRect ().width () - swapPixmap.width (),
                  0,
                  swapPixmap.width (),
                  swapPixmap.height ());
}

// protected
QRect kpDualColorButton::foregroundBackgroundRect () const
{
    QRect cr (contentsRect ());
    return QRect (cr.width () / 8,
                  cr.height () / 8,
                  cr.width () * 6 / 8,
                  cr.height () * 6 / 8);
}

// protected
QRect kpDualColorButton::foregroundRect () const
{
    QRect fbr (foregroundBackgroundRect ());
    return QRect (fbr.x (),
                  fbr.y (),
                  fbr.width () * 3 / 4,
                  fbr.height () * 3 / 4);
}

// protected
QRect kpDualColorButton::backgroundRect () const
{
    QRect fbr (foregroundBackgroundRect ());
    return QRect (fbr.x () + fbr.width () / 4,
                  fbr.y () + fbr.height () / 4,
                  fbr.width () * 3 / 4,
                  fbr.height () * 3 / 4);
}


// TODO: drag a colour from this widget

// protected virtual [base QWidget]
void kpDualColorButton::dragMoveEvent (QDragMoveEvent *e)
{
    e->accept ((foregroundRect ().contains (e->pos ()) ||
                backgroundRect ().contains (e->pos ())) &&
               KColorDrag::canDecode (e));
}

// protected virtual [base QWidget]
void kpDualColorButton::dropEvent (QDropEvent *e)
{
    QColor col;
    KColorDrag::decode (e, col/*ref*/);

    if (col.isValid ())
    {
        if (foregroundRect ().contains (e->pos ()))
            setForegroundColor (kpColor (col.rgb ()));
        else if (backgroundRect ().contains (e->pos ()))
            setBackgroundColor (kpColor (col.rgb ()));
    }
}


// protected virtual [base QWidget]
void kpDualColorButton::mousePressEvent (QMouseEvent * /*e*/)
{
    // eat right-mouse click to prevent it from getting to the toolbar
}

// protected virtual [base QWidget]
void kpDualColorButton::mouseDoubleClickEvent (QMouseEvent *e)
{
    int whichColor = -1;

    if (foregroundRect ().contains (e->pos ()))
        whichColor = 0;
    else if (backgroundRect ().contains (e->pos ()))
        whichColor = 1;

    if (whichColor == 0 || whichColor == 1)
    {
        QColor col = Qt::black;
        if (color (whichColor).isOpaque ())
            col = color (whichColor).toQColor ();
        else
        {
            // TODO: If you double-click on a transparent color and press OK, you get
            //       black, instead of the color staying as transparent.
            //
            //       We should modify or fork KColorDialog to allow us to fix this.
            //
            //       It would be wrong to stop the user from double-clicking on a
            //       transparent color as that would make the UI inconsistent, compared
            //       to opaque colors.
        }

        // TODO: parent
        if (KColorDialog::getColor (col/*ref*/))
            setColor (whichColor, kpColor (col.rgb ()));
    }
}

// protected virtual [base QWidget]
void kpDualColorButton::mouseReleaseEvent (QMouseEvent *e)
{
    if (swapPixmapRect ().contains (e->pos ()) &&
        m_color [0] != m_color [1])
    {
    #if DEBUG_KP_COLOR_TOOL_BAR && 1
        kdDebug () << "kpDualColorButton::mouseReleaseEvent() swap colors:" << endl;
    #endif
        m_oldColor [0] = m_color [0];
        m_oldColor [1] = m_color [1];

        kpColor temp = m_color [0];
        m_color [0] = m_color [1];
        m_color [1] = temp;

        update ();

        emit colorsSwapped (m_color [0], m_color [1]);
        emit foregroundColorChanged (m_color [0]);
        emit backgroundColorChanged (m_color [1]);
    }
}


// protected virtual [base QFrame]
void kpDualColorButton::drawContents (QPainter *p)
{
#if DEBUG_KP_COLOR_TOOL_BAR && 1
    kdDebug () << "kpDualColorButton::draw() rect=" << rect ()
               << " contentsRect=" << contentsRect ()
               << endl;
#endif

    if (!m_backBuffer ||
        m_backBuffer->width () != contentsRect ().width () ||
        m_backBuffer->height () != contentsRect ().height ())
    {
        delete m_backBuffer;
        m_backBuffer = new QPixmap (contentsRect ().width (), contentsRect ().height ());
    }


    QPainter backBufferPainter (m_backBuffer);

    if (isEnabled () && m_mainWindow)
    {
        kpView::drawTransparentBackground (&backBufferPainter,
                                           m_backBuffer->width (), m_backBuffer->height (),
                                           m_backBuffer->rect (),
                                           true/*preview*/);
    }
    else
    {
        backBufferPainter.fillRect (m_backBuffer->rect (),
                                    colorGroup ().color (QColorGroup::Background));
    }

    QPixmap swapPixmap = UserIcon ("colorbutton_swap_16x16");
    if (!isEnabled ())
    {
        // swapPixmap has a mask after all
        swapPixmap.fill (colorGroup ().color (QColorGroup::Dark));
    }
    backBufferPainter.drawPixmap (swapPixmapRect ().topLeft (), swapPixmap);

    // foreground patch must be drawn after background patch
    // as it overlaps on top of background patch
    QRect bgRect = backgroundRect ();
    QRect bgRectInside = QRect (bgRect.x () + 2, bgRect.y () + 2,
                                bgRect.width () - 4, bgRect.height () - 4);
    if (isEnabled ())
    {
    #if DEBUG_KP_COLOR_TOOL_BAR && 1
        kdDebug () << "\tbackgroundColor=" << (int *) m_color [1].toQRgb ()
                   << endl;
    #endif
        if (m_color [1].isOpaque ())
            backBufferPainter.fillRect (bgRectInside, m_color [1].toQColor ());
        else
            backBufferPainter.drawPixmap (bgRectInside, UserIcon ("color_transparent_26x26"));
    }
    else
        backBufferPainter.fillRect (bgRectInside, colorGroup ().color (QColorGroup::Button));
    qDrawShadePanel (&backBufferPainter, bgRect, colorGroup (),
                     false/*not sunken*/, 2/*lineWidth*/,
                     0/*never fill*/);

    QRect fgRect = foregroundRect ();
    QRect fgRectInside = QRect (fgRect.x () + 2, fgRect.y () + 2,
                                fgRect.width () - 4, fgRect.height () - 4);
    if (isEnabled ())
    {
    #if DEBUG_KP_COLOR_TOOL_BAR && 1
        kdDebug () << "\tforegroundColor=" << (int *) m_color [0].toQRgb ()
                   << endl;
    #endif
        if (m_color [0].isOpaque ())
            backBufferPainter.fillRect (fgRectInside, m_color [0].toQColor ());
        else
            backBufferPainter.drawPixmap (fgRectInside, UserIcon ("color_transparent_26x26"));
    }
    else
        backBufferPainter.fillRect (fgRectInside, colorGroup ().color (QColorGroup::Button));
    qDrawShadePanel (&backBufferPainter, fgRect, colorGroup (),
                     false/*not sunken*/, 2/*lineWidth*/,
                     0/*never fill*/);

    backBufferPainter.end ();

    p->drawPixmap (contentsRect (), *m_backBuffer);
}


/*
 * kpColorCells
 */

static inline int roundUp2 (int val)
{
    return val % 2 ? val + 1 : val;
}

static inline int btwn0_255 (int val)
{
    if (val < 0)
        return 0;
    else if (val > 255)
        return 255;
    else
        return val;
}

enum
{
    blendDark = 25,
    blendNormal = 50,
    blendLight = 75,
    blendAdd = 100
};

static QColor blend (const QColor &a, const QColor &b, int percent = blendNormal)
{
    return QColor (btwn0_255 (roundUp2 (a.red () + b.red ()) * percent / 100),
                   btwn0_255 (roundUp2 (a.green () + b.green ()) * percent / 100),
                   btwn0_255 (roundUp2 (a.blue () + b.blue ()) * percent / 100));
}

static QColor add (const QColor &a, const QColor &b)
{
    return blend (a, b, blendAdd);
}





//
// make our own colors in case weird ones like "Qt::cyan"
// (turquoise) get changed by Qt
//

// primary colors + B&W
static QColor kpRed;
static QColor kpGreen;
static QColor kpBlue;
static QColor kpBlack;
static QColor kpWhite;

// intentionally _not_ an HSV darkener
static QColor dark (const QColor &color)
{
    return blend (color, kpBlack);
}

// full-brightness colors
static QColor kpYellow;
static QColor kpPurple;
static QColor kpAqua;

// mixed colors
static QColor kpGrey;
static QColor kpLightGrey;
static QColor kpOrange;

// pastel colors
static QColor kpPink;
static QColor kpLightGreen;
static QColor kpLightBlue;
static QColor kpTan;

static bool ownColorsInitialised = false;

/* TODO: clean up this code!!!
 *       (probably when adding palette load/save)
 */
#define rows 2
#define cols 11
kpColorCells::kpColorCells (QWidget *parent,
                            Qt::Orientation o,
                            const char *name)
    : KColorCells (parent, rows, cols),
      m_mouseButton (-1)
{
    setName (name);

    setShading (false);  // no 3D look
    
    // Trap KColorDrag so that kpMainWindow does not trap it.
    // See our impl of dropEvent().
    setAcceptDrops (true);
    setAcceptDrags (true);
    
    connect (this, SIGNAL (colorDoubleClicked (int)),
             SLOT (slotColorDoubleClicked (int)));

    if (!ownColorsInitialised)
    {
        // Don't initialise globally when we probably don't have a colour
        // allocation context.  This way, the colours aren't sometimes
        // invalid (e.g. at 8-bit).

        kpRed = QColor (255, 0, 0);
        kpGreen = QColor (0, 255, 0);
        kpBlue = QColor (0, 0, 255);
        kpBlack = QColor (0, 0, 0);
        kpWhite = QColor (255, 255, 255);

        kpYellow = add (kpRed, kpGreen);
        kpPurple = add (kpRed, kpBlue);
        kpAqua = add (kpGreen, kpBlue);

        kpGrey = blend (kpBlack, kpWhite);
        kpLightGrey = blend (kpGrey, kpWhite);
        kpOrange = blend (kpRed, kpYellow);

        kpPink = blend (kpRed, kpWhite);
        kpLightGreen = blend (kpGreen, kpWhite);
        kpLightBlue = blend (kpBlue, kpWhite);
        kpTan = blend (kpYellow, kpWhite);

        ownColorsInitialised = true;
    }

    setOrientation (o);
}

kpColorCells::~kpColorCells ()
{
}

Qt::Orientation kpColorCells::orientation () const
{
    return m_orientation;
}

void kpColorCells::setOrientation (Qt::Orientation o)
{
    int c, r;

    if (o == Qt::Horizontal)
    {
        c = cols;
        r = rows;
    }
    else
    {
        c = rows;
        r = cols;
    }

#if DEBUG_KP_COLOR_TOOL_BAR
    kdDebug () << "kpColorCells::setOrientation(): r=" << r << " c=" << c << endl;
#endif

    setNumRows (r);
    setNumCols (c);

    setCellWidth (26);
    setCellHeight (26);
    
    setFixedSize (numCols () * cellWidth () + frameWidth () * 2,
                  numRows () * cellHeight () + frameWidth () * 2);

/*
    kdDebug () << "\tlimits: array=" << sizeof (colors) / sizeof (colors [0])
               << " r*c=" << r * c << endl;
    kdDebug () << "\tsizeof (colors)=" << sizeof (colors)
               << " sizeof (colors [0])=" << sizeof (colors [0])
               << endl;*/
    QColor colors [] =
    {
        kpBlack,
        kpGrey,
        kpRed,
        kpOrange,
        kpYellow,
        kpGreen,
        kpAqua,
        kpBlue,
        kpPurple,
        kpPink,
        kpLightGreen,

        kpWhite,
        kpLightGrey,
        dark (kpRed),
        dark (kpOrange)/*brown*/,
        dark (kpYellow),
        dark (kpGreen),
        dark (kpAqua),
        dark (kpBlue),
        dark (kpPurple),
        kpLightBlue,
        kpTan
    };

    for (int i = 0;
         /*i < int (sizeof (colors) / sizeof (colors [0])) &&*/
         i < r * c;
         i++)
    {
        int y, x;
        int pos;

        if (o == Qt::Horizontal)
        {
            y = i / cols;
            x = i % cols;
            pos = i;
        }
        else
        {
            y = i % cols;
            x = i / cols;
            // int x = rows - 1 - i / cols;
            pos = y * rows + x;
        }

        KColorCells::setColor (pos, colors [i]);
        //QToolTip::add (this, cellGeometry (y, x), colors [i].name ());
    }

    m_orientation = o;
}

// virtual protected [base KColorCells]
void kpColorCells::dropEvent (QDropEvent *e)
{
    // Eat event so that:
    //
    // 1. User doesn't clobber the palette (until we support reconfigurable
    //    palettes)
    // 2. kpMainWindow::dropEvent() doesn't try to paste colour code as text
    //    (when the user slips and drags colour cell a little instead of clicking)
    e->accept ();
}

// virtual protected
void kpColorCells::paintCell (QPainter *painter, int row, int col)
{
    QColor oldColor;
    int cellNo;

    if (!isEnabled ())
    {
        cellNo = row * numCols () + col;

        // make all cells 3D (so that disabled palette doesn't look flat)
        setShading (true);

        oldColor = KColorCells::color (cellNo);
        KColorCells::colors [cellNo] = backgroundColor ();
    }


    // no focus rect as it doesn't make sense
    // since 2 colors (foreground & background) can be selected
    KColorCells::selected = -1;
    KColorCells::paintCell (painter, row, col);


    if (!isEnabled ())
    {
        KColorCells::colors [cellNo] = oldColor;
        setShading (false);
    }
}

// virtual protected
void kpColorCells::mouseReleaseEvent (QMouseEvent *e)
{
    m_mouseButton = -1;

    Qt::ButtonState button = e->button ();
#if DEBUG_KP_COLOR_TOOL_BAR
    kdDebug () << "kpColorCells::mouseReleaseEvent(left="
               << (button & Qt::LeftButton)
               << ",right="
               << (button & Qt::RightButton)
               << ")"
               << endl;
#endif
    if (!((button & Qt::LeftButton) && (button & Qt::RightButton)))
    {
        if (button & Qt::LeftButton)
            m_mouseButton = 0;
        else if (button & Qt::RightButton)
            m_mouseButton = 1;
    }

    connect (this, SIGNAL (colorSelected (int)), this, SLOT (slotColorSelected (int)));
    KColorCells::mouseReleaseEvent (e);
    disconnect (this, SIGNAL (colorSelected (int)), this, SLOT (slotColorSelected (int)));

#if DEBUG_KP_COLOR_TOOL_BAR
    kdDebug () << "kpColorCells::mouseReleaseEvent() setting m_mouseButton back to -1" << endl;
#endif
    m_mouseButton = -1;
}

// protected virtual [base KColorCells]
void kpColorCells::resizeEvent (QResizeEvent *e)
{
    // KColorCells::resizeEvent() tries to adjust the cellWidth and cellHeight
    // to the current dimensions but doesn't take into account
    // frame{Width,Height}().
    //
    // In any case, we already set the cell{Width,Height} and a fixed
    // widget size and don't want any of it changed.  Eat the resize event.
    (void) e;
}

// protected slot
void kpColorCells::slotColorSelected (int cell)
{
#if DEBUG_KP_COLOR_TOOL_BAR
    kdDebug () << "kpColorCells::slotColorSelected(cell=" << cell
               << ") mouseButton = " << m_mouseButton << endl;
#endif
    QColor c = KColorCells::color (cell);

    if (m_mouseButton == 0)
    {
        emit foregroundColorChanged (c);
        emit foregroundColorChanged (kpColor (c.rgb ()));
    }
    else if (m_mouseButton == 1)
    {
        emit backgroundColorChanged (c);
        emit backgroundColorChanged (kpColor (c.rgb ()));
    }

    m_mouseButton = -1;  // just in case
}

// protected slot
void kpColorCells::slotColorDoubleClicked (int cell)
{
#if DEBUG_KP_COLOR_TOOL_BAR
    kdDebug () << "kpColorCells::slotColorDoubleClicked(cell="
               << cell << ")" << endl;
#endif

    QColor color = KColorCells::color (cell);

    // TODO: parent
    if (KColorDialog::getColor (color/*ref*/))
        KColorCells::setColor (cell, color);
}


/*
 * kpTransparentColorCell
 */

kpTransparentColorCell::kpTransparentColorCell (QWidget *parent, const char *name)
    : QFrame (parent, name)
{
#if DEBUG_KP_COLOR_TOOL_BAR
    kdDebug () << "kpTransparentColorCell::kpTransparentColorCell()" << endl;
#endif

    setFrameStyle (QFrame::Panel | QFrame::Sunken);
#if DEBUG_KP_COLOR_TOOL_BAR && 0
    kdDebug () << "\tdefault line width=" << lineWidth ()
               << " frame width=" << frameWidth () << endl;
#endif
    //setLineWidth (2);
#if DEBUG_KP_COLOR_TOOL_BAR && 0
    kdDebug () << "\tline width=" << lineWidth ()
               << " frame width=" << frameWidth () << endl;
#endif

    m_pixmap = UserIcon ("color_transparent_26x26");

    QToolTip::add (this, i18n ("Transparent"));
}

kpTransparentColorCell::~kpTransparentColorCell ()
{
}


// public virtual [base QWidget]
QSize kpTransparentColorCell::sizeHint () const
{
    return QSize (m_pixmap.width () + frameWidth () * 2,
                  m_pixmap.height () + frameWidth () * 2);
}

// protected virtual [base QWidget]
void kpTransparentColorCell::mousePressEvent (QMouseEvent * /*e*/)
{
    // eat right-mouse click to prevent it from getting to the toolbar
}

// protected virtual [base QWidget]
void kpTransparentColorCell::mouseReleaseEvent (QMouseEvent *e)
{
    if (rect ().contains (e->pos ()))
    {
        if (e->button () == Qt::LeftButton)
        {
            emit transparentColorSelected (0);
            emit foregroundColorChanged (kpColor::transparent);
        }
        else if (e->button () == Qt::RightButton)
        {
            emit transparentColorSelected (1);
            emit backgroundColorChanged (kpColor::transparent);
        }
    }
}

// protected virtual [base QFrame]
void kpTransparentColorCell::drawContents (QPainter *p)
{
    QFrame::drawContents (p);
    if (isEnabled ())
    {
    #if DEBUG_KP_COLOR_TOOL_BAR
        kdDebug () << "kpTransparentColorCell::drawContents() contentsRect="
                   << contentsRect ()
                   << endl;
    #endif
        p->drawPixmap (contentsRect (), m_pixmap);
    }
}


/*
 * kpColorPalette
 */

kpColorPalette::kpColorPalette (QWidget *parent,
                                Qt::Orientation o,
                                const char *name)
    : QWidget (parent, name),
      m_boxLayout (0)
{
#if DEBUG_KP_COLOR_TOOL_BAR
    kdDebug () << "kpColorPalette::kpColorPalette()" << endl;
#endif

    m_transparentColorCell = new kpTransparentColorCell (this);
    m_transparentColorCell->setSizePolicy (QSizePolicy::Fixed, QSizePolicy::Fixed);
    connect (m_transparentColorCell, SIGNAL (foregroundColorChanged (const kpColor &)),
             this, SIGNAL (foregroundColorChanged (const kpColor &)));
    connect (m_transparentColorCell, SIGNAL (backgroundColorChanged (const kpColor &)),
             this, SIGNAL (backgroundColorChanged (const kpColor &)));

    m_colorCells = new kpColorCells (this);
    connect (m_colorCells, SIGNAL (foregroundColorChanged (const kpColor &)),
             this, SIGNAL (foregroundColorChanged (const kpColor &)));
    connect (m_colorCells, SIGNAL (backgroundColorChanged (const kpColor &)),
             this, SIGNAL (backgroundColorChanged (const kpColor &)));

    setOrientation (o);
}

kpColorPalette::~kpColorPalette ()
{
}

// public
Qt::Orientation kpColorPalette::orientation () const
{
    return m_orientation;
}

void kpColorPalette::setOrientation (Qt::Orientation o)
{
    m_colorCells->setOrientation (o);

    delete m_boxLayout;

    if (o == Qt::Horizontal)
    {
        m_boxLayout = new QBoxLayout (this, QBoxLayout::LeftToRight, 0/*margin*/, 5/*spacing*/);
        m_boxLayout->addWidget (m_transparentColorCell, 0/*stretch*/, Qt::AlignVCenter);
        m_boxLayout->addWidget (m_colorCells);
    }
    else
    {
        m_boxLayout = new QBoxLayout (this, QBoxLayout::TopToBottom, 0/*margin*/, 5/*spacing*/);
        m_boxLayout->addWidget (m_transparentColorCell, 0/*stretch*/, Qt::AlignHCenter);
        m_boxLayout->addWidget (m_colorCells);
    }

    m_orientation = o;
}


/*
 * kpColorSimilarityToolBarItem
 */

kpColorSimilarityToolBarItem::kpColorSimilarityToolBarItem (kpMainWindow *mainWindow,
                                                            QWidget *parent,
                                                            const char *name)
    : kpColorSimilarityCube (kpColorSimilarityCube::Depressed |
                             kpColorSimilarityCube::DoubleClickInstructions,
                             mainWindow, parent, name),
      m_mainWindow (mainWindow),
      m_processedColorSimilarity (kpColor::Exact)
{
    setColorSimilarity (mainWindow->configColorSimilarity ());
}

kpColorSimilarityToolBarItem::~kpColorSimilarityToolBarItem ()
{
}


// public
int kpColorSimilarityToolBarItem::processedColorSimilarity () const
{
    return m_processedColorSimilarity;
}


// public slot
void kpColorSimilarityToolBarItem::setColorSimilarity (double similarity)
{
    m_oldColorSimilarity = colorSimilarity ();

    kpColorSimilarityCube::setColorSimilarity (similarity);
    if (similarity > 0)
        QToolTip::add (this, i18n ("Color similarity: %1%").arg (qRound (similarity * 100)));
    else
        QToolTip::add (this, i18n ("Color similarity: Exact"));

    m_processedColorSimilarity = kpColor::processSimilarity (colorSimilarity ());

    m_mainWindow->configSetColorSimilarity (colorSimilarity ());

    emit colorSimilarityChanged (colorSimilarity (), m_processedColorSimilarity);
}

// public
double kpColorSimilarityToolBarItem::oldColorSimilarity () const
{
    return m_oldColorSimilarity;
}


// private virtual [base QWidget]
void kpColorSimilarityToolBarItem::mousePressEvent (QMouseEvent * /*e*/)
{
    // eat right-mouse click to prevent it from getting to the toolbar
}

// private virtual [base QWidget]
void kpColorSimilarityToolBarItem::mouseDoubleClickEvent (QMouseEvent * /*e*/)
{
    kpColorSimilarityDialog dialog (m_mainWindow, this);
    dialog.setColorSimilarity (colorSimilarity ());
    if (dialog.exec ())
    {
        setColorSimilarity (dialog.colorSimilarity ());
    }
}


/*
 * kpColorToolBar
 */

kpColorToolBar::kpColorToolBar (const QString &label, kpMainWindow *mainWindow, const char *name)
    : KToolBar (mainWindow, name),
      m_mainWindow (mainWindow)
{
    setText (label);


    QWidget *base = new QWidget (this);
    m_boxLayout = new QBoxLayout (base, QBoxLayout::LeftToRight,
                                  5/*margin*/, (10 * 4)/*spacing*/);

    m_dualColorButton = new kpDualColorButton (mainWindow, base);
    m_dualColorButton->setSizePolicy (QSizePolicy::Fixed, QSizePolicy::Fixed);
    connect (m_dualColorButton, SIGNAL (colorsSwapped (const kpColor &, const kpColor &)),
             this, SIGNAL (colorsSwapped (const kpColor &, const kpColor &)));
    connect (m_dualColorButton, SIGNAL (foregroundColorChanged (const kpColor &)),
             this, SIGNAL (foregroundColorChanged (const kpColor &)));
    connect (m_dualColorButton, SIGNAL (backgroundColorChanged (const kpColor &)),
             this, SIGNAL (backgroundColorChanged (const kpColor &)));
    m_boxLayout->addWidget (m_dualColorButton, 0/*stretch*/);

    m_colorPalette = new kpColorPalette (base);
    connect (m_colorPalette, SIGNAL (foregroundColorChanged (const kpColor &)),
             m_dualColorButton, SLOT (setForegroundColor (const kpColor &)));
    connect (m_colorPalette, SIGNAL (backgroundColorChanged (const kpColor &)),
             m_dualColorButton, SLOT (setBackgroundColor (const kpColor &)));
    m_boxLayout->addWidget (m_colorPalette, 0/*stretch*/);

    m_colorSimilarityToolBarItem = new kpColorSimilarityToolBarItem (mainWindow, base);
    m_colorSimilarityToolBarItem->setSizePolicy (QSizePolicy::Fixed, QSizePolicy::Fixed);
    connect (m_colorSimilarityToolBarItem, SIGNAL (colorSimilarityChanged (double, int)),
             this, SIGNAL (colorSimilarityChanged (double, int)));
    m_boxLayout->addWidget (m_colorSimilarityToolBarItem, 0/*stretch*/);

    // HACK: couldn't get QSpacerItem to work
    QWidget *fakeSpacer = new QWidget (base);
    m_boxLayout->addWidget (fakeSpacer, 1/*stretch*/);

    m_lastDockedOrientationSet = false;
    setOrientation (orientation ());

    KToolBar::insertWidget (0, base->width (), base);
}

// virtual
void kpColorToolBar::setOrientation (Qt::Orientation o)
{
    // (QDockWindow::undock() calls us)
    bool isOutsideDock = (place () == QDockWindow::OutsideDock);

    if (!m_lastDockedOrientationSet || !isOutsideDock)
    {
        m_lastDockedOrientation = o;
        m_lastDockedOrientationSet = true;
    }

    if (isOutsideDock)
    {
        //kdDebug () << "\toutside dock, forcing orientation to last" << endl;
        o = m_lastDockedOrientation;
    }

    if (o == Qt::Horizontal)
    {
        m_boxLayout->setDirection (QBoxLayout::LeftToRight);
    }
    else
    {
        m_boxLayout->setDirection (QBoxLayout::TopToBottom);
    }

    m_colorPalette->setOrientation (o);

    KToolBar::setOrientation (o);
}

kpColorToolBar::~kpColorToolBar ()
{
}

kpColor kpColorToolBar::color (int which) const
{
    if (which < 0 || which > 1)
    {
        kdWarning () << "kpColorToolBar::color (" << which
                     << ") - out of range" << endl;
        which = 0;
    }

    return m_dualColorButton->color (which);
}

void kpColorToolBar::setColor (int which, const kpColor &color)
{
    if (which < 0 || which > 1)
    {
        kdWarning () << "kpColorToolBar::setColor (" << which
                     << ") - out of range" << endl;
        which = 0;
    }

    m_dualColorButton->setColor (which, color);
}

kpColor kpColorToolBar::foregroundColor () const
{
    return m_dualColorButton->foregroundColor ();
}

void kpColorToolBar::setForegroundColor (const kpColor &color)
{
    m_dualColorButton->setForegroundColor (color);
}

kpColor kpColorToolBar::backgroundColor () const
{
    return m_dualColorButton->backgroundColor ();
}

void kpColorToolBar::setBackgroundColor (const kpColor &color)
{
    m_dualColorButton->setBackgroundColor (color);
}


kpColor kpColorToolBar::oldForegroundColor () const
{
    return m_dualColorButton->oldForegroundColor ();
}

kpColor kpColorToolBar::oldBackgroundColor () const
{
    return m_dualColorButton->oldBackgroundColor ();
}

double kpColorToolBar::oldColorSimilarity () const
{
    return m_colorSimilarityToolBarItem->oldColorSimilarity ();
}


double kpColorToolBar::colorSimilarity () const
{
    return m_colorSimilarityToolBarItem->colorSimilarity ();
}

void kpColorToolBar::setColorSimilarity (double similarity)
{
    m_colorSimilarityToolBarItem->setColorSimilarity (similarity);
}

int kpColorToolBar::processedColorSimilarity () const
{
    return m_colorSimilarityToolBarItem->processedColorSimilarity ();
}


#include <kpcolortoolbar.moc>