/*

Copyright 2011-2012 Heikki Holstila <heikki.holstila@gmail.com>

This file is part of FingerTerm.

FingerTerm 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.

FingerTerm 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 FingerTerm. If not, see <http://www.gnu.org/licenses/>.

*/

#ifndef TEXTRENDER_H

#define TEXTRENDER_H

#include <QPainter>

#include "terminal.h"

class Util;

{

Q_PROPERTY(int fontWidth READ fontWidth NOTIFY fontSizeChanged)

Q_PROPERTY(int fontHeight READ fontHeight NOTIFY fontSizeChanged)

Q_PROPERTY(int fontPointSize READ fontPointSize WRITE setFontPointSize NOTIFY fontSizeChanged)

Q_PROPERTY(bool showBufferScrollIndicator READ showBufferScrollIndicator WRITE setShowBufferScrollIndicator NOTIFY showBufferScrollIndicatorChanged)

Q_OBJECT

public:

static void setUtil(Util *util);

static void setTerminal(Terminal *terminal);

int fontWidth() { return iFontWidth; }

int fontHeight() { return iFontHeight; }

int fontDescent() { return iFontDescent; }

int fontPointSize() { return iFont.pointSize(); }

void setFontPointSize(int psize);

bool showBufferScrollIndicator() { return iShowBufferScrollIndicator; }

void setShowBufferScrollIndicator(bool s) { if(iShowBufferScrollIndicator!=s) { iShowBufferScrollIndicator=s; emit showBufferScrollIndicatorChanged(); } }

Q_INVOKABLE QPoint cursorPixelPos();

Q_INVOKABLE QSize cursorPixelSize();

bool allowGestures();

void setAllowGestures(bool allow);

signals:

void fontSizeChanged();

void showBufferScrollIndicatorChanged();

public slots:

void redraw();

void updateTermSize();

void mousePress(float eventX, float eventY);

void mouseMove(float eventX, float eventY);

void mouseRelease(float eventX, float eventY);

private slots:

void handleScrollBack(bool reset);

private:

Q_DISABLE_COPY(TextRender)

enum PanGesture { PanNone, PanLeft, PanRight, PanUp, PanDown };

void paintFromBuffer(QPainter* painter, QList<QList<TermChar> >& buffer, int from, int to, int &y);

void drawBgFragment(QPainter* painter, int x, int y, int width, TermChar style);

void drawTextFragment(QPainter* painter, int x, int y, QString text, TermChar style);

QPoint charsToPixels(QPoint pos);

void selectionHelper(QPointF scenePos, bool selectionOngoing);

/**

* Scroll the back buffer on drag.

*

* @param now The current position

* @param last The last position (or start position)

* @return The new value for last (modified by any consumed offset)

**/

QPointF scrollBackBuffer(QPointF now, QPointF last);

void doGesture(PanGesture gesture);

bool newSelection;

QPointF dragOrigin;

QFont iFont;

int iFontWidth;

int iFontHeight;

int iFontDescent;

bool iShowBufferScrollIndicator;

static Terminal *sTerm;

static Util *sUtil;

QList<QColor> iColorTable;

};

#endif // TEXTRENDER_H