88 lines
3.1 KiB
C
88 lines
3.1 KiB
C
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/**
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* \file
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* <!--
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* This file is part of BeRTOS.
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*
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* Bertos is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* As a special exception, you may use this file as part of a free software
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* library without restriction. Specifically, if other files instantiate
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* templates or use macros or inline functions from this file, or you compile
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* this file and link it with other files to produce an executable, this
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* file does not by itself cause the resulting executable to be covered by
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* the GNU General Public License. This exception does not however
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* invalidate any other reasons why the executable file might be covered by
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* the GNU General Public License.
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*
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* Copyright 2004, 2006 Develer S.r.l. (http://www.develer.com/)
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*
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* -->
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*
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* \brief Generic editor for (volume/gain/contrast/...) setting.
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*
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* \author Stefano Fedrigo <aleph@develer.com>
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*/
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#ifndef GUI_LEVELEDIT_H
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#define GUI_LEVELEDIT_H
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//#include <gui/levelbar.h>
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/* Type for level_init */
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#define LEVELEDIT_NOBAR 0 /**< Edit number only, without bar nor units */
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#define LEVELEDIT_SINGLE 1 /**< Single channel editing */
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#define LEVELEDIT_DOUBLE 2 /**< Double channel editing */
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/* Fwd decl */
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struct Bitmap;
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struct LevelEdit;
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/** Type for callback used to set meter levels */
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typedef void level_set_callback(void);
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/** Type for callback used to customize display of units */
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typedef void display_callback(struct LevelEdit *);
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/**
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* State of a level meter
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*/
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typedef struct LevelEdit {
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int type; /*<! Type of level edititing mode (see prev defines) */
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const char *title; /*<! Title on top of screen */
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const char *unit; /*<! Unit of quantity changed by this LevelEdit */
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int min; /*<! Minimum level */
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int max; /*<! Maximum level */
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int step; /*<! Value of a single increment/decrement */
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level_set_callback *set_hook; /*<! Callback called when a value is changed */
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display_callback *display_hook; /*<! Callback for complex unit display */
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int *ch1_val; /*<! (left) Value edited by this leveledit */
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int *ch2_val; /*<! Right channel edited */
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struct Bitmap *bitmap; /*<! Bitmap where the whole thing is rendered */
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} LevelEdit;
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void level_init(struct LevelEdit *lev,
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int type,
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struct Bitmap *bmp, const char *title, const char *unit,
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int min, int max, int step,
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int *ch1_val, int *ch2_val,
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level_set_callback *change_hook, display_callback *display_hook);
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void level_edit(struct LevelEdit *lev);
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#endif /* GUI_LEVELEDIT_H */
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