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bertos/drv/lcd_lm44_qt.h

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+/**
+ * \file
+ * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
+ * Copyright 2006 Develer S.r.l. (http://www.develer.com/)
+ * Copyright 2000,2001 Bernie Innocenti <bernie@codewiz.org>
+ *
+ * -->
+ *
+ *
+ * \author Bernie Innocenti <bernie@codewiz.org>
+ *
+ * \brief Custom Qt widget for emulating a graphics LCD display (implementation)
+ */
+
+#ifndef EMULLCD_H
+#define EMULLCD_H
+
+#include <qframe.h>
+#include <qfont.h>
+#include <qcolor.h>
+
+// fwd decls
+class QSizePolicy;
+class QPaintEvent;
+class QResizeEvent;
+
+/**
+ * Qt widget to emulate a dot-matrix LCD display.
+ */
+class EmulLCD : public QFrame
+{
+	Q_OBJECT
+
+public:
+// Attributes
+	enum { COLS = 20, ROWS = 4 };
+
+// Construction
+	EmulLCD(QWidget *parent = 0, const char *name = 0);
+	virtual ~EmulLCD();
+
+// Base class overrides
+protected:
+	virtual QSizePolicy sizePolicy() const;
+	virtual QSize sizeHint() const;
+	virtual void drawContents(QPainter *p);
+
+// Operations
+public:
+	void MoveCursor		(int col, int row);
+	void ShowCursor		(bool show = true);
+	void PutChar		(unsigned char c);
+	char GetChar		();
+	void Clear			();
+	void SetCGRamAddr	(unsigned char addr);
+
+// Implementation
+protected:
+	void SetPainter(QPainter & p);
+	void RedrawText(QPainter & p);
+	void PrintChar(QPainter & p, int row, int col);
+	void AdvanceCursor();
+
+	QFont lcd_font;					///< Display character font
+	QColor fg_color, bg_color;		///< LCD colors
+	int font_width, font_height;	///< Font dimensions
+	int frame_width;				///< Frame width (and height)
+	int	cr_row, cr_col;				///< Cursor position
+	int cgramaddr;					///< CGRAM Address (-1 disabled)
+	unsigned char ddram[ROWS][COLS];///< Display data RAM
+	unsigned char cgram[8*8];		///< CGRAM
+	bool show_cursor;				///< Cursor enabled?
+};
+
+#endif // !defined(EMULLCD_H)
+