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Add require("clock_info").addInteractive to allow info displays to be added to the screen easily (ref #2226)

master
Gordon Williams 2022-11-04 11:50:27 +00:00
parent 1b1f1d776b
commit 69dbac6128
1 changed files with 61 additions and 2 deletions
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63
modules/clock_info.js
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@ -111,12 +111,71 @@ exports.load = function() {
return menu;
};
/** Adds an interactive menu that could be used on a clock face by swiping.
Simply supply the menu data (from .load) and a function to draw the clock info.
// Code for testing
For example:
var clockInfoMenu = require("clock_info").addInteractive(require("clock_info").load(), (itm, info) => {
var y = 0;
g.reset().setFont("6x8:2").setFontAlign(-1,0);
g.clearRect(0,y,g.getWidth(),y+23);
g.drawImage(info.img, 0,y);
g.drawString(info.text, 48,y+12);
});
Then if you need to unload the clock info so it no longer
uses memory or responds to swipes, you can call clockInfoMenu.remove()
and delete clockInfoMenu
*/
exports.addInteractive = function(menu, drawFn) {
if (!menu.length || !menu[0].items.length) return; // no info
var menuA = 0, menuB = 0;
function menuShowItem(itm) {
itm.on('redraw', ()=>drawFn(itm, itm.get()));
itm.show();
itm.emit("redraw");
}
// handling for swipe between menu items
function swipeHandler(lr,ud){
var oldMenuItem;
if (ud) {
if (menu[menuA].items.length==1) return; // 1 item - can't move
oldMenuItem = menu[menuA].items[menuB];
menuB += ud;
if (menuB<0) menuB = menu[menuA].items.length-1;
if (menuB>=menu[menuA].items.length) menuB = 0;
} else if (lr) {
if (menu.length==1) return; // 1 item - can't move
oldMenuItem = menu[menuA].items[menuB];
menuA += ud;
if (menuA<0) menuA = menu.length-1;
if (menuA>=menu.length) menuA = 0;
menuB = 0;
}
if (oldMenuItem) {
oldMenuItem.hide();
oldMenuItem.removeAllListeners("draw");
menuShowItem(menu[menuA].items[menuB]);
}
}
Bangle.on("swipe",swipeHandler);
// draw the first item
menuShowItem(menu[menuA].items[menuB]);
// return an object with info that can be used to remove the info
return {
remove : function() {
Bangle.removeListener("swipe",swipeHandler);
menu[menuA].items[menuB].hide();
}
};
};
// Code for testing (plots all elements from first list)
/*
g.clear();
var menu = exports.load(); // or require("clock_info").load()
var itemsFirstMenu = menu[0].items;
var items = menu[0].items;
items.forEach((itm,i) => {
var y = i*24;
console.log("Starting", itm.name);