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toaster-oven-bluepill/Core/Src/Gui/screen_menu.c

116 lines
3.6 KiB

//
// Created by MightyPork on 2023/04/09.
//
#include <stdbool.h>
#include <string.h>
#include "screen_menu.h"
#include "app_gui.h"
#include "FreeRTOS.h"
#include "task.h"
#include "ufb/utf8.h"
#include "ufb/framebuffer_config.h"
#include "ufb/framebuffer.h"
#include "ufb/fb_text.h"
struct menu_state {
int pos;
int len;
uint32_t change_time;
uint32_t slide_end_time;
uint16_t text_slide;
void * last_opts;
} s_menu;
void screen_menu(GuiEvent event, const char **options, menu_callback_t cb) {
screen_menu_offset(event, options, cb, 15);
}
void screen_menu_offset(GuiEvent event, const char **options, menu_callback_t cb, fbpos_t offset) {
if (event != GUI_EVENT_SCREEN_INIT && s_menu.last_opts != (void*) options) {
// ensure the menu is properly inited when the options list changes.
screen_menu(GUI_EVENT_SCREEN_INIT, options, cb);
}
bool menu_changed = false;
const uint32_t tickNow = xTaskGetTickCount();
switch (event) {
case GUI_EVENT_SCREEN_INIT:
memset(&s_menu, 0, sizeof(s_menu));
s_menu.last_opts = (void*) options;
s_menu.change_time = tickNow;
// count options
const char **opt = options;
while (*opt) {
s_menu.len++;
opt++;
}
break;
case GUI_EVENT_SCREEN_TICK:
// long text sliding animation
if (tickNow - s_menu.change_time >= pdMS_TO_TICKS(500)) {
const uint32_t textlen = utf8_strlen(options[s_menu.pos]) * 6;
if (textlen >= FBW - 2) {
if (textlen - s_menu.text_slide > FBW - 1) {
s_menu.text_slide += 1;
if (textlen - s_menu.text_slide >= FBW - 1) {
s_menu.slide_end_time = tickNow;
}
} else if (tickNow - s_menu.slide_end_time >= pdMS_TO_TICKS(500)) {
s_menu.change_time = tickNow;
s_menu.slide_end_time = 0;
s_menu.text_slide = 0;
}
request_paint();
}
}
break;
case GUI_EVENT_PAINT:
for (int i = 0; i < s_menu.len; i++) {
// is the row currently rendered the selected row?
const bool is_selected = s_menu.pos == i;
const fbcolor_t color = !is_selected; // text color - black if selected, because it's inverted
const fbpos_t y = 12 + offset + i * 10 ;
fb_rect(0, y, FBW, 10, !color);
fb_text(1 - (is_selected ? s_menu.text_slide : 0), y + 1, options[i], FONT_5X7, color);
// ensure the text doesn't touch the edge (looks ugly)
fb_vline(FBW - 1, y, 10, !color);
fb_vline(0, y, 10, !color);
}
break;
// the button is held! release is what activates the button
case GUI_EVENT_KNOB_RELEASE:
input_sound_effect();
cb(s_menu.pos);
break;
case GUI_EVENT_KNOB_PLUS:
if (s_menu.pos < s_menu.len - 1) {
s_menu.pos++;
menu_changed = true;
}
break;
case GUI_EVENT_KNOB_MINUS:
if (s_menu.pos > 0) {
s_menu.pos--;
menu_changed = true;
}
break;
}
if (menu_changed) {
s_menu.change_time = tickNow;
s_menu.text_slide = 0;
s_menu.slide_end_time = 0;
input_sound_effect();
request_paint();
}
}