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/*
 For general Scribus (>=1.3.2) copyright and licensing information please refer
 to the COPYING file provided with the program. Following this notice may exist
 a copyright and/or license notice that predates the release of Scribus 1.3.2
 for which a new license (GPL+exception) is in place.
 */

/***************************************************************************
*                                                                         *
*   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.                                   *
*                                                                         *
***************************************************************************/



#include "canvasmode_objimport.h"

#include <QApplication>
#include <QCursor>
#include <QDropEvent>
#include <QPoint>
#include <QRect>
#include <QDebug>

#include "appmodes.h"
#include "canvas.h"
#include "fpoint.h"
#include "fpointarray.h"
#include "prefscontext.h"
#include "prefsfile.h"
#include "prefsmanager.h"
#include "scribus.h"
#include "scribusdoc.h"
#include "scribusview.h"
#include "selection.h"
#include "ui/pageselector.h"
#include "ui/scrspinbox.h"
#include "undomanager.h"
#include "util.h"
#include "util_math.h"


CanvasMode_ObjImport::CanvasMode_ObjImport(ScribusView* view) :
        CanvasMode(view)
{
}

CanvasMode_ObjImport::~CanvasMode_ObjImport()
{
        delete m_mimeData;
        delete m_trSettings;
}

void CanvasMode_ObjImport::setMimeData(QMimeData* mimeData)
{
        delete m_mimeData;
        m_mimeData = mimeData;
}

void CanvasMode_ObjImport:: setTransactionSettings(TransactionSettings* settings)
{
        delete m_trSettings;
        m_trSettings = settings;
}

void CanvasMode_ObjImport::drawControls(QPainter* p)
{
//      qDebug() << "CanvasMode_ObjImport::drawControls";
        drawSelection(p, false);
}

void CanvasMode_ObjImport::enterEvent(QEvent *e)
{
        if (m_mimeData)
        {
                setModeCursor();
                return;
        }
}

void CanvasMode_ObjImport::leaveEvent(QEvent *e)
{
}


void CanvasMode_ObjImport::activate(bool fromGesture)
{
//      qDebug() << "CanvasMode_ObjImport::activate" << fromGesture;
        CanvasMode::activate(fromGesture);

        m_canvas->m_viewMode.m_MouseButtonPressed = false;
        m_canvas->resetRenderMode();
        m_doc->DragP = false;
        m_doc->leaveDrag = false;
        m_canvas->m_viewMode.operItemMoving = false;
        m_canvas->m_viewMode.operItemResizing = false;
        m_view->MidButt = false;
        m_Mxp = m_Myp = -1;
        setModeCursor();
        if (fromGesture)
        {
                m_view->update();
        }
}

void CanvasMode_ObjImport::deactivate(bool forGesture)
{
//      qDebug() << "CanvasMode_ObjImport::deactivate" << forGesture;
        setMimeData(nullptr);
        setTransactionSettings(nullptr);
        m_view->setRedrawMarkerShown(false);

        CanvasMode::deactivate(forGesture);
}

void CanvasMode_ObjImport::mouseDoubleClickEvent(QMouseEvent *m)
{
        m->accept();
        m_canvas->m_viewMode.m_MouseButtonPressed = false;
        m_canvas->resetRenderMode();
//      m_view->stopDragTimer();
}

void CanvasMode_ObjImport::mouseMoveEvent(QMouseEvent *m)
{
        m->accept();

        if (commonMouseMove(m))
                return;
}

void CanvasMode_ObjImport::mousePressEvent(QMouseEvent *m)
{
//      const double mouseX = m->globalX();
//      const double mouseY = m->globalY();
        const FPoint mousePointDoc = m_canvas->globalToCanvas(m->globalPos());

        double Rxp = 0, Ryp = 0;
        m_canvas->PaintSizeRect(QRect());
        m_canvas->m_viewMode.m_MouseButtonPressed = true;
        m_canvas->m_viewMode.operItemMoving = false;
        m_view->HaveSelRect = false;
        m_doc->DragP = false;
        m_doc->leaveDrag = false;
//      oldClip = 0;
        m->accept();
        m_view->registerMousePress(m->globalPos());
        m_Mxp = mousePointDoc.x();
        m_Myp = mousePointDoc.y();
        Rxp = m_doc->ApplyGridF(FPoint(m_Mxp, m_Myp)).x();
        m_Mxp = qRound(Rxp);
        Ryp = m_doc->ApplyGridF(FPoint(m_Mxp, m_Myp)).y();
        m_Myp = qRound(Ryp);
        if (m->button() == Qt::MidButton)
        {
                m_view->MidButt = true;
                if (m->modifiers() & Qt::ControlModifier)
                        m_view->DrawNew();
                return;
        }
}

void CanvasMode_ObjImport::mouseReleaseEvent(QMouseEvent *m)
{
        m_canvas->m_viewMode.m_MouseButtonPressed = false;
        m_canvas->resetRenderMode();
        m->accept();
        if ((m->button() == Qt::LeftButton) && m_mimeData)
        {
                UndoTransaction undoTransaction;
                if (m_trSettings && UndoManager::undoEnabled())
                {
                        undoTransaction = UndoManager::instance()->beginTransaction(*m_trSettings);
                }
                // Creating QDragEnterEvent outside of Qt is not recommended per docs :S
                QPoint dropPos = m_view->widget()->mapFromGlobal(m->globalPos());
                const FPoint mousePointDoc = m_canvas->globalToCanvas(m->globalPos());
                QDropEvent dropEvent(dropPos, Qt::CopyAction|Qt::MoveAction, m_mimeData, m->buttons(), m->modifiers());
                m_view->contentsDropEvent(&dropEvent);
                if (m_doc->m_Selection->count() > 0)
                {
                        double gx, gy, gh, gw;
                        m_doc->m_Selection->getGroupRect(&gx, &gy, &gw, &gh);
                        m_doc->moveGroup(mousePointDoc.x() - gx, mousePointDoc.y() -gy);
                }
                // Commit undo transaction if necessary
                if (undoTransaction)
                {
                        undoTransaction.commit();
                }
                // Return to normal mode
                m_view->requestMode(modeNormal);
        }
//      m_view->stopDragTimer();
       
        m_canvas->setRenderModeUseBuffer(false);
        m_doc->DragP = false;
        m_doc->leaveDrag = false;
        m_canvas->m_viewMode.operItemMoving = false;
        m_canvas->m_viewMode.operItemResizing = false;
        m_view->MidButt = false;
        //Make sure the Zoom spinbox and page selector don't have focus if we click on the canvas
        m_view->m_ScMW->zoomSpinBox->clearFocus();
        m_view->m_ScMW->pageSelector->clearFocus();
}