/*
 *  kis_cmb_composite.cc - part of KImageShop/Krayon/Krita
 *
 *  Copyright (c) 2004 Boudewijn Rempt (boud@valdyas.org)
 *  Copyright (c) 2011 Silvio Heinrich <plassy@web.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 "kis_cmb_composite.h"

#include <KoCompositeOp.h>
#include <KoCompositeOpRegistry.h>
#include "kis_composite_ops_model.h"
#include "kis_categorized_item_delegate.h"

#include <kaction.h>

//////////////////////////////////////////////////////////////////////////////////////////
// ---- KisCompositeOpListWidget ------------------------------------------------------ //

KisCompositeOpListWidget::KisCompositeOpListWidget(QWidget* parent):
    KisCategorizedListView(false, parent),
    m_model(new KisSortedCompositeOpListModel(this))
{
    setModel(m_model);
    setItemDelegate(new KisCategorizedItemDelegate(true, this));
}

KisCompositeOpListWidget::~KisCompositeOpListWidget()
{
}

KoID KisCompositeOpListWidget::selectedCompositeOp() const {
    KoID op;

    if (m_model->entryAt(op, currentIndex())) {
        return op;
    }

    return KoCompositeOpRegistry::instance().getDefaultCompositeOp();
}

//////////////////////////////////////////////////////////////////////////////////////////
// ---- KisCompositeOpComboBox -------------------------------------------------------- //

KisCompositeOpComboBox::KisCompositeOpComboBox(QWidget* parent):
    QComboBox(parent),
    m_model(new KisSortedCompositeOpListModel(this)),
    m_allowToHidePopup(true)
{
    m_view = new KisCategorizedListView(true);

    setMaxVisibleItems(100);
    setSizeAdjustPolicy(AdjustToContents);
    m_view->setResizeMode(QListView::Adjust);

    setToolTip(i18n("Blending Mode"));

    setModel(m_model);
    setView(m_view);
    setItemDelegate(new KisCategorizedItemDelegate(true, this));

    connect(m_view, SIGNAL(sigCategoryToggled(const QModelIndex&, bool)), SLOT(slotCategoryToggled(const QModelIndex&, bool)));
    connect(m_view, SIGNAL(sigEntryChecked(const QModelIndex&)), SLOT(slotEntryChecked(const QModelIndex&)));

    selectCompositeOp(KoCompositeOpRegistry::instance().getDefaultCompositeOp());

    KAction *action = 0;
//    //    Cycle through blending modes
//    //    Shift + + (plus) or – (minus)
//    KAction *action = new KAction(i18n("Next Blending Mode"), this);
//    action->setShortcut(QKeySequence(Qt::SHIFT + Qt::ALT + Qt::Key_Plus));
//    connect(action, SIGNAL(triggered()), SLOT(slotNextBlendingMode()));
//    m_actions << action;

//    action = new KAction(i18n("Previous Blending Mode"), this);
//    action->setShortcut(QKeySequence(Qt::SHIFT + Qt::ALT +  Qt::Key_Minus));
//    connect(action, SIGNAL(triggered()), SLOT(slotPreviousBlendingMode()));
//    m_actions << action;

    //    Normal
    //    Shift + Alt + N
    action = new KAction(i18n("Select Normal Blending Mode"), this);
    action->setShortcut(QKeySequence(Qt::SHIFT + Qt::ALT + Qt::Key_N));
    connect(action, SIGNAL(triggered()), SLOT(slotNormal()));
    m_actions << action;

    //    Dissolve
    //    Shift + Alt + I
    action = new KAction(i18n("Select Dissolve Blending Mode"), this);
    action->setShortcut(QKeySequence(Qt::SHIFT + Qt::ALT + Qt::Key_I));
    connect(action, SIGNAL(triggered()), SLOT(slotDissolve()));
    m_actions << action;

    //    Behind (Brush tool only)
    //    Shift + Alt + Q
    action = new KAction(i18n("Select Behind Blending Mode"), this);
    action->setShortcut(QKeySequence(Qt::SHIFT + Qt::ALT + Qt::Key_Q));
    connect(action, SIGNAL(triggered()), SLOT(slotBehind()));
    m_actions << action;

    //    Clear (Brush tool only)
    //    Shift + Alt + R
    action = new KAction(i18n("Select Clear Blending Mode"), this);
    action->setShortcut(QKeySequence(Qt::SHIFT + Qt::ALT + Qt::Key_R));
    connect(action, SIGNAL(triggered()), SLOT(slotClear()));
    m_actions << action;

    //    Darken
    //    Shift + Alt + K
    action = new KAction(i18n("Select Darken Blending Mode"), this);
    action->setShortcut(QKeySequence(Qt::SHIFT + Qt::ALT + Qt::Key_K));
    connect(action, SIGNAL(triggered()), SLOT(slotDarken()));
    m_actions << action;

    //    Multiply
    //    Shift + Alt + M
    action = new KAction(i18n("Select Multiply Blending Mode"), this);
    action->setShortcut(QKeySequence(Qt::SHIFT + Qt::ALT + Qt::Key_M));
    connect(action, SIGNAL(triggered()), SLOT(slotMultiply()));
    m_actions << action;

    //    Color Burn
    //    Shift + Alt + B
    action = new KAction(i18n("Select Color Burn Blending Mode"), this);
    action->setShortcut(QKeySequence(Qt::SHIFT + Qt::ALT + Qt::Key_B));
    connect(action, SIGNAL(triggered()), SLOT(slotColorBurn()));
    m_actions << action;

    //    Linear Burn
    //    Shift + Alt + A
    action = new KAction(i18n("Select Linear Burn Blending Mode"), this);
    action->setShortcut(QKeySequence(Qt::SHIFT + Qt::ALT + Qt::Key_A));
    connect(action, SIGNAL(triggered()), SLOT(slotLinearBurn()));
    m_actions << action;

    //    Lighten
    //    Shift + Alt + G
    action = new KAction(i18n("Select Lighten Blending Mode"), this);
    action->setShortcut(QKeySequence(Qt::SHIFT + Qt::ALT + Qt::Key_G));
    connect(action, SIGNAL(triggered()), SLOT(slotLighten()));
    m_actions << action;

    //    Screen
    //    Shift + Alt + S
    action = new KAction(i18n("Select Screen Blending Mode"), this);
    action->setShortcut(QKeySequence(Qt::SHIFT + Qt::ALT + Qt::Key_S));
    connect(action, SIGNAL(triggered()), SLOT(slotScreen()));
    m_actions << action;

    //    Color Dodge
    //    Shift + Alt + D
    action = new KAction(i18n("Select Color Dodge Blending Mode"), this);
    action->setShortcut(QKeySequence(Qt::SHIFT + Qt::ALT + Qt::Key_D));
    connect(action, SIGNAL(triggered()), SLOT(slotColorDodge()));
    m_actions << action;

    //    Linear Dodge
    //    Shift + Alt + W
    action = new KAction(i18n("Select Linear Dodge Blending Mode"), this);
    action->setShortcut(QKeySequence(Qt::SHIFT + Qt::ALT + Qt::Key_W));
    connect(action, SIGNAL(triggered()), SLOT(slotLinearDodge()));
    m_actions << action;

    //    Overlay
    //    Shift + Alt + O
    action = new KAction(i18n("Select Overlay Blending Mode"), this);
    action->setShortcut(QKeySequence(Qt::SHIFT + Qt::ALT + Qt::Key_O));
    connect(action, SIGNAL(triggered()), SLOT(slotOverlay()));
    m_actions << action;

    //    Soft Light
    //    Shift + Alt + F
    action = new KAction(i18n("Select Soft Light Blending Mode"), this);
    action->setShortcut(QKeySequence(Qt::SHIFT + Qt::ALT + Qt::Key_F));
    connect(action, SIGNAL(triggered()), SLOT(slotSoftLight()));
    m_actions << action;

    //    Hard Light
    //    Shift + Alt + H
    action = new KAction(i18n("Select Hard Light Blending Mode"), this);
    action->setShortcut(QKeySequence(Qt::SHIFT + Qt::ALT + Qt::Key_H));
    connect(action, SIGNAL(triggered()), SLOT(slotHardLight()));
    m_actions << action;

    //    Vivid Light
    //    Shift + Alt + V
    action = new KAction(i18n("Select Vivid Light Blending Mode"), this);
    action->setShortcut(QKeySequence(Qt::SHIFT + Qt::ALT + Qt::Key_V));
    connect(action, SIGNAL(triggered()), SLOT(slotVividLight()));
    m_actions << action;

    //    Linear Light
    //    Shift + Alt + J
    action = new KAction(i18n("Select Linear Light Blending Mode"), this);
    action->setShortcut(QKeySequence(Qt::SHIFT + Qt::ALT + Qt::Key_J));
    connect(action, SIGNAL(triggered()), SLOT(slotLinearLight()));
    m_actions << action;

    //    Pin Light
    //    Shift + Alt + Z
    action = new KAction(i18n("Select Pin Light Blending Mode"), this);
    action->setShortcut(QKeySequence(Qt::SHIFT + Qt::ALT + Qt::Key_Z));
    connect(action, SIGNAL(triggered()), SLOT(slotPinLight()));
    m_actions << action;

    //    Hard Mix
    //    Shift + Alt + L
    action = new KAction(i18n("Select Hard Mix Blending Mode"), this);
    action->setShortcut(QKeySequence(Qt::SHIFT + Qt::ALT + Qt::Key_L));
    connect(action, SIGNAL(triggered()), SLOT(slotHardMix()));
    m_actions << action;

    //    Difference
    //    Shift + Alt + E
    action = new KAction(i18n("Select Difference Blending Mode"), this);
    action->setShortcut(QKeySequence(Qt::SHIFT + Qt::ALT + Qt::Key_E));
    connect(action, SIGNAL(triggered()), SLOT(slotDifference()));
    m_actions << action;

    //    Exclusion
    //    Shift + Alt + X
    action = new KAction(i18n("Select Exclusion Blending Mode"), this);
    action->setShortcut(QKeySequence(Qt::SHIFT + Qt::ALT + Qt::Key_X));
    connect(action, SIGNAL(triggered()), SLOT(slotExclusion()));
    m_actions << action;

    //    Hue
    //    Shift + Alt + U
    action = new KAction(i18n("Select Hue Blending Mode"), this);
    action->setShortcut(QKeySequence(Qt::SHIFT + Qt::ALT + Qt::Key_U));
    connect(action, SIGNAL(triggered()), SLOT(slotHue()));
    m_actions << action;

    //    Saturation
    //    Shift + Alt + T
    action = new KAction(i18n("Select Saturation Blending Mode"), this);
    action->setShortcut(QKeySequence(Qt::SHIFT + Qt::ALT + Qt::Key_T));
    connect(action, SIGNAL(triggered()), SLOT(slotSaturation()));
    m_actions << action;

    //    Color
    //    Shift + Alt + C
    action = new KAction(i18n("Select Color Blending Mode"), this);
    action->setShortcut(QKeySequence(Qt::SHIFT + Qt::ALT + Qt::Key_C));
    connect(action, SIGNAL(triggered()), SLOT(slotColor()));
    m_actions << action;

    //    Luminosity
    //    Shift + Alt + Y
    action = new KAction(i18n("Select Luminosity Blending Mode"), this);
    action->setShortcut(QKeySequence(Qt::SHIFT + Qt::ALT + Qt::Key_Y));
    connect(action, SIGNAL(triggered()), SLOT(slotLuminosity()));
    m_actions << action;


}

KisCompositeOpComboBox::~KisCompositeOpComboBox()
{
    delete m_view;
}

void KisCompositeOpComboBox::validate(const KoColorSpace *cs) {
    m_model->validate(cs);
}

void KisCompositeOpComboBox::selectCompositeOp(const KoID &op) {
    QModelIndex index = m_model->indexOf(op);
    setCurrentIndex(index.row());
}

KoID KisCompositeOpComboBox::selectedCompositeOp() const {
    KoID op;

    if (m_model->entryAt(op, m_model->index(currentIndex(), 0))) {
        return op;
    }
    return KoCompositeOpRegistry::instance().getDefaultCompositeOp();
}


QList<KAction *> KisCompositeOpComboBox::blendmodeActions()
{
    return m_actions;
}

void KisCompositeOpComboBox::slotCategoryToggled(const QModelIndex& index, bool toggled)
{
    Q_UNUSED(index);
    Q_UNUSED(toggled);

    //NOTE: this will (should) fit the size of the
    //      popup widget to the view
    //      don't know if this is expected behaviour
    //      on all supported platforms.
    //      Thre is nothing written about this in the docs.
    showPopup();
}

void KisCompositeOpComboBox::slotEntryChecked(const QModelIndex& index)
{
    Q_UNUSED(index);
    m_allowToHidePopup = false;
}

void KisCompositeOpComboBox::hidePopup()
{
    if (m_allowToHidePopup) {
        QComboBox::hidePopup();
    }
    else  {
        QComboBox::showPopup();
    }

    m_allowToHidePopup = true;
}

void KisCompositeOpComboBox::slotNextBlendingMode()
{
    if (currentIndex() < count()) {
        setCurrentIndex(currentIndex() + 1);
    }
}

void KisCompositeOpComboBox::slotPreviousBlendingMode()
{
    if (currentIndex() > 0) {
        setCurrentIndex(currentIndex() - 1);
    }
}

void KisCompositeOpComboBox::slotNormal()
{
    selectCompositeOp(KoCompositeOpRegistry::instance().getKoID(COMPOSITE_OVER));
}

void KisCompositeOpComboBox::slotDissolve()
{
    selectCompositeOp(KoCompositeOpRegistry::instance().getKoID(COMPOSITE_DISSOLVE));
}

void KisCompositeOpComboBox::slotBehind()
{
    selectCompositeOp(KoCompositeOpRegistry::instance().getKoID(COMPOSITE_BEHIND));
}

void KisCompositeOpComboBox::slotClear()
{
    selectCompositeOp(KoCompositeOpRegistry::instance().getKoID(COMPOSITE_CLEAR));
}

void KisCompositeOpComboBox::slotDarken()
{
    selectCompositeOp(KoCompositeOpRegistry::instance().getKoID(COMPOSITE_DARKEN));
}

void KisCompositeOpComboBox::slotMultiply()
{
    selectCompositeOp(KoCompositeOpRegistry::instance().getKoID(COMPOSITE_MULT));
}

void KisCompositeOpComboBox::slotColorBurn()
{
    selectCompositeOp(KoCompositeOpRegistry::instance().getKoID(COMPOSITE_BURN));
}

void KisCompositeOpComboBox::slotLinearBurn()
{
    selectCompositeOp(KoCompositeOpRegistry::instance().getKoID(COMPOSITE_LINEAR_BURN));
}

void KisCompositeOpComboBox::slotLighten()
{
    selectCompositeOp(KoCompositeOpRegistry::instance().getKoID(COMPOSITE_LIGHTEN));
}

void KisCompositeOpComboBox::slotScreen()
{
    selectCompositeOp(KoCompositeOpRegistry::instance().getKoID(COMPOSITE_SCREEN));
}

void KisCompositeOpComboBox::slotColorDodge()
{
    selectCompositeOp(KoCompositeOpRegistry::instance().getKoID(COMPOSITE_DODGE));
}

void KisCompositeOpComboBox::slotLinearDodge()
{
    selectCompositeOp(KoCompositeOpRegistry::instance().getKoID(COMPOSITE_LINEAR_DODGE));
}

void KisCompositeOpComboBox::slotOverlay()
{
    selectCompositeOp(KoCompositeOpRegistry::instance().getKoID(COMPOSITE_OVERLAY));
}

void KisCompositeOpComboBox::slotSoftLight()
{
    selectCompositeOp(KoCompositeOpRegistry::instance().getKoID(COMPOSITE_SOFT_LIGHT_PHOTOSHOP));
}

void KisCompositeOpComboBox::slotHardLight()
{
    selectCompositeOp(KoCompositeOpRegistry::instance().getKoID(COMPOSITE_HARD_LIGHT));
}

void KisCompositeOpComboBox::slotVividLight()
{
    selectCompositeOp(KoCompositeOpRegistry::instance().getKoID(COMPOSITE_VIVID_LIGHT));
}

void KisCompositeOpComboBox::slotLinearLight()
{
    selectCompositeOp(KoCompositeOpRegistry::instance().getKoID(COMPOSITE_LINEAR_LIGHT));
}

void KisCompositeOpComboBox::slotPinLight()
{
    selectCompositeOp(KoCompositeOpRegistry::instance().getKoID(COMPOSITE_PIN_LIGHT));
}

void KisCompositeOpComboBox::slotHardMix()
{
    selectCompositeOp(KoCompositeOpRegistry::instance().getKoID(COMPOSITE_HARD_MIX));
}

void KisCompositeOpComboBox::slotDifference()
{
    selectCompositeOp(KoCompositeOpRegistry::instance().getKoID(COMPOSITE_DIFF));
}

void KisCompositeOpComboBox::slotExclusion()
{
    selectCompositeOp(KoCompositeOpRegistry::instance().getKoID(COMPOSITE_EXCLUSION));
}

void KisCompositeOpComboBox::slotHue()
{
    selectCompositeOp(KoCompositeOpRegistry::instance().getKoID(COMPOSITE_HUE));
}

void KisCompositeOpComboBox::slotSaturation()
{
    selectCompositeOp(KoCompositeOpRegistry::instance().getKoID(COMPOSITE_SATURATION));
}

void KisCompositeOpComboBox::slotColor()
{
    selectCompositeOp(KoCompositeOpRegistry::instance().getKoID(COMPOSITE_COLOR));
}

void KisCompositeOpComboBox::slotLuminosity()
{
    selectCompositeOp(KoCompositeOpRegistry::instance().getKoID(COMPOSITE_LUMINIZE));
}
