textviewer.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef TEXTVIEWER_DIALOG_H
#define TEXTVIEWER_DIALOG_H

#include "common/array.h"
#include "common/str.h"

#include "gui/dialog.h"

namespace Graphics {
class Font;
}

namespace GUI {

class ButtonWidget;
class ScrollBarWidget;
#ifdef EMSCRIPTEN
enum {
    kDownloadFileCmd = 'dlfc',
};
#endif 

class TextViewerDialog : public Dialog {
private:
    int _lineWidth;
    int _linesPerPage;
    int _currentPos;
    int _scrollLine;

    int _charWidth;
    int _lineHeight;
    int _padX, _padY;

    Common::StringArray _linesArray;

    ScrollBarWidget *_scrollBar;
    ButtonWidget *_closeButton;
#ifdef EMSCRIPTEN
    ButtonWidget *_downloadButton;
#endif

    Common::Path _fname;
    const Graphics::Font *_font = nullptr;

    bool loadFile(const Common::Path &fname);
    void reflowLayout();

public:
    TextViewerDialog(const Common::Path &fname);
    ~TextViewerDialog();

    void destroy();
    void open();
    void drawDialog(DrawLayer layerToDraw);

    void handleMouseWheel(int x, int y, int direction);
    void handleKeyDown(Common::KeyState state);
    void handleCommand(CommandSender *sender, uint32 cmd, uint32 data);
};

} // End of namespace GUI

#endif