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textrootwidget.h
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textrootwidget.h
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/** @file textrootwidget.h Text-based root widget.
*
* @authors Copyright © 2013 Jaakko Keränen <jaakko.keranen@iki.fi>
*
* @par License
* GPL: http://www.gnu.org/licenses/gpl.html
*
* <small>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, see:
* http://www.gnu.org/licenses</small>
*/
#ifndef LIBSHELL_TEXTROOTWIDGET_H
#define LIBSHELL_TEXTROOTWIDGET_H
#include "libshell.h"
#include <de/RootWidget>
#include "TextCanvas"
namespace de {
namespace shell {
class TextWidget;
/**
* Root widget for device-independent, text-based UIs.
*
* As TextCanvas uses the concept of dirty characters to indicidate changes to
* be drawn on the screen, the text root widget assumes that by default drawing
* is unnecessary, and redraws must be requested by widgets when suitable.
*/
class LIBSHELL_PUBLIC TextRootWidget : public RootWidget
{
public:
/**
* Constructs a new text-based root widget.
*
* @param cv Canvas for the root. Ownership taken. Size of the canvas
* is used as the root widget's size.
*/
TextRootWidget(TextCanvas *cv);
~TextRootWidget();
TextCanvas &rootCanvas();
void requestDraw();
bool drawWasRequested() const;
/**
* Resizes the canvas and changes the view size.
*
* @param viewSize New size.
*/
void setViewSize(Size const &viewSize);
TextWidget *focus() const;
void draw();
private:
TextCanvas *_canvas;
bool _drawRequest;
};
} // namespace shell
} // namespace de
#endif // LIBSHELL_TEXTROOTWIDGET_H