/*
 *  kis_tool_select_brush.cc - part of Chalk
 *
 *  Copyright (c) 2004 Boudewijn Rempt <boud@valdyas.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; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

#include <tqevent.h>
#include <tqlabel.h>
#include <tqlayout.h>
#include <tqwidget.h>
#include <tqrect.h>

#include <kdebug.h>
#include <kaction.h>
#include <kcommand.h>
#include <klocale.h>

#include "kis_brush.h"
#include "kis_button_press_event.h"
#include "kis_button_release_event.h"
#include "kis_cmb_composite.h"
#include "kis_cursor.h"
#include "kis_doc.h"
#include "kis_paintop.h"
#include "kis_paintop_registry.h"
#include "kis_move_event.h"
#include "kis_painter.h"
#include "kis_selection.h"
#include "kis_tool_select_brush.h"
#include "kis_types.h"
#include "kis_layer.h"
#include "kis_view.h"
#include "kis_selection_options.h"
#include "kis_selected_transaction.h"

KisToolSelectBrush::KisToolSelectBrush()
        : super(i18n("SelectBrush"))
{
    setName("tool_select_brush");
    m_optWidget = 0;
    setCursor(KisCursor::load("tool_brush_selection_cursor.png", 5, 5));
    m_paintOnSelection = true;
}

KisToolSelectBrush::~KisToolSelectBrush()
{
}

void KisToolSelectBrush::activate()
{
    super::activate();

    if (!m_optWidget)
        return;

    m_optWidget->slotActivated();
}

void KisToolSelectBrush::initPaint(KisEvent* /*e*/) 
{
    if (!m_currentImage || !m_currentImage->activeDevice()) return;

    m_mode = PAINT;
    m_dragDist = 0;

    // Create painter
    KisPaintDeviceSP dev = m_currentImage->activeDevice();
    if (m_painter)
        delete m_painter;
    bool hasSelection = dev->hasSelection();
    if (m_currentImage->undo()) m_transaction = new KisSelectedTransaction(i18n("Selection Brush"), dev);
    if(! hasSelection)
    {
        dev->selection()->clear();
        dev->emitSelectionChanged();
    }
    KisSelectionSP selection = dev->selection();

    m_target = selection;
    m_painter = new KisPainter(selection.data());
    Q_CHECK_PTR(m_painter);
    m_painter->setPaintColor(KisColor(TQt::black, selection->colorSpace()));
    m_painter->setBrush(m_subject->currentBrush());
    m_painter->setOpacity(OPACITY_OPAQUE);//m_subject->fgColor().colorSpace()->intensity8(m_subject->fgColor().data()));
    m_painter->setCompositeOp(COMPOSITE_OVER);
    KisPaintOp * op = KisPaintOpRegistry::instance()->paintOp("paintbrush", 0, painter());
    painter()->setPaintOp(op); // And now the painter owns the op and will destroy it.

    // Set the cursor -- ideally. this should be a tqmask created from the brush,
    // now that X11 can handle colored cursors.
#if 0
    // Setting cursors has no effect until the tool is selected again; this
    // should be fixed.
    setCursor(KisCursor::brushCursor());
#endif
}

void KisToolSelectBrush::endPaint() 
{
    m_mode = HOVER;
    if (m_currentImage && m_currentImage->activeLayer()) {
        if (m_currentImage->undo() && m_painter) {
            // If painting in mouse release, make sure painter
            // is destructed or end()ed
            m_currentImage->undoAdapter()->addCommand(m_transaction);
        }
        delete m_painter;
        m_painter = 0;
        if (m_currentImage->activeDevice())
            m_currentImage->activeDevice()->emitSelectionChanged();
        notifyModified();
    }
}


void KisToolSelectBrush::setup(KActionCollection *collection)
{
    m_action = static_cast<KRadioAction *>(collection->action(name()));

    if (m_action == 0) {
        m_action = new KRadioAction(i18n("&Selection Brush"),
                        "tool_brush_selection", "Ctrl+Shift+B", this,
                        TQT_SLOT(activate()), collection,
                        name());
        Q_CHECK_PTR(m_action);
        m_action->setToolTip(i18n("Paint a selection"));
        m_action->setExclusiveGroup("tools");
        m_ownAction = true;
    }
}

TQWidget* KisToolSelectBrush::createOptionWidget(TQWidget* tqparent)
{
    Q_UNUSED(tqparent);
    // Commented out due to the fact that this doesn't actually work if you change the action
#if 0
    m_optWidget = new KisSelectionOptions(tqparent, m_subject);
    Q_CHECK_PTR(m_optWidget);
    m_optWidget->setCaption(i18n("Selection Brush"));

    TQVBoxLayout * l = dynamic_cast<TQVBoxLayout*>(m_optWidget->tqlayout());
    l->addItem(new TQSpacerItem(1, 1, TQSizePolicy::Fixed, TQSizePolicy::Expanding));

    return m_optWidget;
#endif
    return 0;
}

TQWidget* KisToolSelectBrush::optionWidget()
{
    return m_optWidget;
}

#include "kis_tool_select_brush.moc"