134 lines
3.8 KiB
C
134 lines
3.8 KiB
C
/* Copyright 2020 Jay Greco
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*
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* This program 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, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include "HT16K33_GFX.h"
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#include <string.h>
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#define DISP_MODE_SCROLL 0
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#define DISP_MODE_BOUNCE 1
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#define DISP_MODE_PUSH 2
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#define BLANK " "
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#ifndef min
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#define min(a,b) (((a) < (b)) ? (a) : (b))
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#endif
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typedef struct animation_t {
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uint8_t mode : 7;
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uint8_t enabled: 1;
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int8_t pos : 8;
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int8_t dir : 3;
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uint16_t speed : 13;
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uint16_t delay_timer : 16;
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HT16K33 *disp;
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char *message;
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} animation_t;
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animation_t *newAnimation (HT16K33 *disp) {
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animation_t *animation = malloc(sizeof(animation_t));
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if (animation == NULL)
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return NULL;
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animation->mode = DISP_MODE_SCROLL;
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animation->enabled = false;
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animation->pos = 0;
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animation->dir = 1;
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animation->speed = 300;
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animation->delay_timer = timer_read();
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animation->disp = disp;
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animation->message = "";
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return animation;
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}
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__attribute__((weak)) void animation_done_cbk(animation_t *animation) {
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}
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void animation_scroll(animation_t *animation) {
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uint8_t target = min(animation->disp->size, strlen(animation->message));
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for (uint8_t n=0; n<target; n++) {
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HT16K33_dispASCII(animation->disp, n, animation->message[animation->pos+n]);
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}
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if ((animation->enabled) && (strlen(animation->message) > animation->disp->size)) {
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if (++animation->pos > strlen(animation->message) - animation->disp->size) {
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animation->pos = 0;
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animation_done_cbk(animation);
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}
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}
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HT16K33_refresh(animation->disp);
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animation->delay_timer = timer_read();
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}
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void animation_bounce(animation_t *animation) {
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uint8_t target = min(animation->disp->size, strlen(animation->message));
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for (uint8_t n=0; n<target; n++) {
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HT16K33_dispASCII(animation->disp, n, animation->message[animation->pos+n]);
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}
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if ((animation->enabled) && (strlen(animation->message) > animation->disp->size)) {
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animation->pos += animation->dir;
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if (animation->pos < 0) {
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animation->dir = 1;
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animation->pos += animation->dir;
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animation_done_cbk(animation);
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}
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else if (animation->pos > strlen(animation->message) - animation->disp->size) {
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animation->dir = -1;
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animation->pos += animation->dir;
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}
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}
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HT16K33_refresh(animation->disp);
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animation->delay_timer = timer_read();
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}
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void _refresh(animation_t *animation, bool force) {
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if ((timer_elapsed(animation->delay_timer) > animation->speed) || force) {
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if (strlen(animation->message) > INT8_MAX) {
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// dprintf("Message too long! Max: %d\n", INT8_MAX);
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return;
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}
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switch (animation->mode) {
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case DISP_MODE_SCROLL:
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animation_scroll(animation);
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break;
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case DISP_MODE_BOUNCE:
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animation_bounce(animation);
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break;
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default:
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break;
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}
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}
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}
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void animation_refresh(animation_t *animation) {
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_refresh(animation, false);
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}
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void force_animation_refresh(animation_t *animation) {
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animation->pos = 0;
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animation->dir = 1;
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_refresh(animation, true);
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} |