Files
squeezelite-esp32/components/services/display.h
2020-01-26 01:31:43 -08:00

47 lines
2.1 KiB
C

/*
* (c) Philippe G. 2019, philippe_44@outlook.com
*
* 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/>.
*
*/
#pragma once
#define DISPLAY_CLEAR 0x01
#define DISPLAY_UPDATE 0x02
#define SCROLL 0x04 // scroll value is in ... >0 is right, < 0 is left
enum display_pos_e { DISPLAY_LEFT, DISPLAY_RIGHT, DISPLAY_TOP_LEFT, DISPLAY_MIDDLE_LEFT, DISPLAY_BOTTOM_LEFT, DISPLAY_CENTER };
enum display_font_e { DISPLAY_FONT_DEFAULT, DISPLAY_FONT_SEGMENT, DISPLAY_FONT_TINY,
DISPLAY_FONT_SMALL, DISPLAY_FONT_MEDIUM, DISPLAY_FONT_LARGE, DISPLAY_FONT_HUGE };
enum displayer_cmd_e { DISPLAYER_SHUTDOWN, DISPLAYER_ACTIVATE, DISPLAYER_SUSPEND } ;
// don't change anything there w/o changing all drivers init code
extern struct display_s {
int width, height;
bool (*init)(char *config, char *welcome);
void (*clear)(void);
bool (*set_font)(int num, enum display_font_e font, int space);
void (*on)(bool state);
void (*brightness)(u8_t level);
void (*text)(enum display_font_e font, enum display_pos_e pos, int attribute, char *msg, ...);
bool (*line)(int num, enum display_pos_e pos, int offset, int attribute, char *text);
int (*stretch)(int num, char *string, int max);
void (*update)(void);
void (*draw)(int x1, int y1, int x2, int y2, bool by_column, u8_t *data);
void (*draw_cbr)(u8_t *data, int height); // height is the # of columns in data, as oppoosed to display height (0 = display height)
} *display;
void displayer_scroll(char *string, int speed);
void displayer_control(enum displayer_cmd_e cmd);