/****************************************************************************
**
** This file is part of the LibreCAD project, a 2D CAD program
**
** Copyright (C) 2010 R. van Twisk (librecad@rvt.dds.nl)
** Copyright (C) 2001-2003 RibbonSoft. All rights reserved.
**
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file gpl-2.0.txt included in the
** packaging of this file.
**
** 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
**
** This copyright notice MUST APPEAR in all copies of the script!
**
**********************************************************************/

#include <QAction>
#include <QMouseEvent>
#include "rs_actiondrawtext.h"

#include "rs_dialogfactory.h"
#include "rs_graphicview.h"
#include "rs_commandevent.h"
#include "rs_line.h"
#include "rs_text.h"
#include "rs_coordinateevent.h"
#include "rs_preview.h"
#include "rs_debug.h"

struct RS_ActionDrawText::Points {
	RS_Vector pos;
	RS_Vector secPos;
};

RS_ActionDrawText::RS_ActionDrawText(RS_EntityContainer& container,
                                     RS_GraphicView& graphicView)
        :RS_PreviewActionInterface("Draw Text",
						   container, graphicView)
		, pPoints(new Points{})
		,textChanged(true)
{
	actionType=RS2::ActionDrawText;
}

RS_ActionDrawText::~RS_ActionDrawText() = default;


void RS_ActionDrawText::init(int status) {
	RS_ActionInterface::init(status);

	switch (status) {
	case ShowDialog: {
		reset();

		RS_Text tmp(NULL, *data);
		if (RS_DIALOGFACTORY->requestTextDialog(&tmp)) {
			data.reset(new RS_TextData(tmp.getData()));
			setStatus(SetPos);
			showOptions();
		} else {
			hideOptions();
			setFinished();
		}
	}
		break;

	case SetPos:
		RS_DIALOGFACTORY->requestOptions(this, true, true);
		deletePreview();
		preview->setVisible(true);
		preparePreview();
		break;

	default:
		break;
	}
}



void RS_ActionDrawText::reset() {
	const QString text=data.get()?data->text:"";
	data.reset(new RS_TextData(RS_Vector(0.0,0.0), RS_Vector(0.0,0.0),
                       1.0, 1.0,
                       RS_TextData::VABaseline,
                       RS_TextData::HALeft,
                       RS_TextData::None,
					   text,
                       "standard",
                       0.0,
					   RS2::Update));
}



void RS_ActionDrawText::trigger() {

    RS_DEBUG->print("RS_ActionDrawText::trigger()");

	if (pPoints->pos.valid) {
        deletePreview();

		RS_Text* text = new RS_Text(container, *data);
        text->update();
        container->addEntity(text);

        if (document) {
            document->startUndoCycle();
            document->addUndoable(text);
            document->endUndoCycle();
        }

                graphicView->redraw(RS2::RedrawDrawing);

        textChanged = true;
		pPoints->secPos = {};
        setStatus(SetPos);
    }
}


void RS_ActionDrawText::preparePreview() {
	if (data->halign == RS_TextData::HAFit || data->halign == RS_TextData::HAAligned) {
		if (pPoints->secPos.valid) {
			RS_Line* text = new RS_Line(pPoints->pos, pPoints->secPos);
            preview->addEntity(text);
        }
    } else {
		data->insertionPoint = pPoints->pos;
		RS_Text* text = new RS_Text(preview.get(), *data);
        text->update();
        preview->addEntity(text);
    }
    textChanged = false;
}


void RS_ActionDrawText::mouseMoveEvent(QMouseEvent* e) {
    RS_DEBUG->print("RS_ActionDrawText::mouseMoveEvent begin");

    if (getStatus()==SetPos) {
        RS_Vector mouse = snapPoint(e);
		RS_Vector mov = mouse - pPoints->pos;
		pPoints->pos = mouse;
		if (textChanged || pPoints->pos.valid == false || preview->isEmpty()) {
            deletePreview();
            preparePreview();
        } else {
            preview->move(mov);
            preview->setVisible(true);
        }
        drawPreview();
    } else if (getStatus()==SetSecPos) {
		pPoints->secPos = snapPoint(e);
        deletePreview();
        preparePreview();
        drawPreview();
    }

    RS_DEBUG->print("RS_ActionDrawText::mouseMoveEvent end");
}



void RS_ActionDrawText::mouseReleaseEvent(QMouseEvent* e) {
    if (e->button()==Qt::LeftButton) {
        RS_CoordinateEvent ce(snapPoint(e));
        coordinateEvent(&ce);
    } else if (e->button()==Qt::RightButton) {
        deletePreview();
        //init(getStatus()-1);
        finish(false);
    }
}



void RS_ActionDrawText::coordinateEvent(RS_CoordinateEvent* e) {
    if (e==NULL) {
        return;
    }

    RS_Vector mouse = e->getCoordinate();

    switch (getStatus()) {
    case ShowDialog:
        break;

    case SetPos:
		data->insertionPoint = mouse;
		if (data->halign == RS_TextData::HAFit || data->halign == RS_TextData::HAAligned)
            setStatus(SetSecPos);
        else
            trigger();
        break;

    case SetSecPos:
		data->secondPoint = mouse;
        trigger();
        break;

    default:
        break;
    }
}



void RS_ActionDrawText::commandEvent(RS_CommandEvent* e) {
    QString c = e->getCommand().toLower();

	if (checkCommand("help", c)) {
		RS_DIALOGFACTORY->commandMessage(msgAvailableCommands()
										 + getAvailableCommands().join(", "));
		return;
	}

    switch (getStatus()) {
    case SetPos:
        if (checkCommand("text", c)) {
            deletePreview();
            graphicView->disableCoordinateInput();
            setStatus(SetText);
        }
        break;

    case SetText: {
            setText(e->getCommand());
			RS_DIALOGFACTORY->requestOptions(this, true, true);
            graphicView->enableCoordinateInput();
            setStatus(SetPos);
        }
        break;

    default:
        break;
    }
}



QStringList RS_ActionDrawText::getAvailableCommands() {
    QStringList cmd;
    if (getStatus()==SetPos) {
        cmd += command("text");
    }
    return cmd;
}



void RS_ActionDrawText::showOptions() {
    RS_ActionInterface::showOptions();

	RS_DIALOGFACTORY->requestOptions(this, true, true);
}



void RS_ActionDrawText::hideOptions() {
    RS_ActionInterface::hideOptions();

	RS_DIALOGFACTORY->requestOptions(this, false);
}



void RS_ActionDrawText::updateMouseButtonHints() {
	switch (getStatus()) {
	case SetPos:
		RS_DIALOGFACTORY->updateMouseWidget(tr("Specify insertion point"),
											tr("Cancel"));
		break;
	case SetSecPos:
		RS_DIALOGFACTORY->updateMouseWidget(tr("Specify second point"),
											tr("Cancel"));
		break;
	case ShowDialog:
	case SetText:
		RS_DIALOGFACTORY->updateMouseWidget(tr("Enter text:"),
											tr("Back"));
		break;
	default:
		RS_DIALOGFACTORY->updateMouseWidget();
		break;
	}
}



void RS_ActionDrawText::updateMouseCursor() {
    graphicView->setMouseCursor(RS2::CadCursor);
}

void RS_ActionDrawText::setText(const QString& t) {
	data->text = t;
    textChanged = true;
}



const QString&  RS_ActionDrawText::getText() const{
	return data->text;
}


void RS_ActionDrawText::setAngle(double a) {
	data->angle = a;
    textChanged = true;
}

double RS_ActionDrawText::getAngle() const{
	return data->angle;
}


// EOF