forked from FOSS/BangleApps
65 lines
2.9 KiB
JavaScript
65 lines
2.9 KiB
JavaScript
let settings;
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exports.reload = function() {
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//let t = Date.now();
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settings = Object.assign({
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style : "randomcolor",
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colors : ["#F00","#0F0","#00F"]
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},require("Storage").readJSON("clockbg.json")||{});
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if (settings.style=="image")
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settings.img = require("Storage").read(settings.fn);
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else if (settings.style=="randomcolor") {
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settings.style = "color";
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let n = (0|(Math.random()*settings.colors.length)) % settings.colors.length;
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settings.color = settings.colors[n];
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delete settings.colors;
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} else if (settings.style=="squares") { // 32ms
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settings.style = "image";
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let bpp = (settings.colors.length>4)?4:2;
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let bg = Graphics.createArrayBuffer(11,11,bpp,{msb:true});
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let u32 = new Uint32Array(bg.buffer); // faster to do 1/4 of the ops of E.mapInPlace(bg.buffer, bg.buffer, ()=>Math.random()*256);
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if (Math.randInt) E.mapInPlace(u32, u32, Math.randInt); // random pixels
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else E.mapInPlace(u32, u32, function(r,n){"ram";return r()*n}.bind(null,Math.random,0x100000000)); // random pixels
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bg.buffer[bg.buffer.length-1]=Math.random()*256; // 11x11 isn't a multiple of 4 bytes - we need to set the last one!
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bg.palette = new Uint16Array(1<<bpp);
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bg.palette.set(settings.colors.map(c=>g.toColor(c)));
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settings.img = bg;
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settings.imgOpt = {scale:16};
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delete settings.colors;
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} else if (settings.style=="plasma") { // ~47ms
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settings.style = "image";
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let bg = Graphics.createArrayBuffer(16,16,4,{msb:true});
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let u32 = new Uint32Array(bg.buffer); // faster to do 1/4 of the ops of E.mapInPlace(bg.buffer, bg.buffer, ()=>Math.random()*256);
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if (Math.randInt) E.mapInPlace(u32, u32, Math.randInt); // random pixels
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else E.mapInPlace(u32, u32, function(r,n){"ram";return r()*n}.bind(null,Math.random,0x100000000)); // random pixels
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bg.filter([ // a gaussian filter to smooth out
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1, 4, 7, 4, 1,
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4,16,26,16, 4,
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7,26,41,26, 7,
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4,16,26,16, 4,
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1, 4, 7, 4, 1
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], { w:5, h:5, div:120, offset:-800 });
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bg.palette = new Uint16Array(16);
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bg.palette.set(settings.colors.map(c=>g.toColor(c)));
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settings.img = bg;
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settings.imgOpt = {scale:11};
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delete settings.colors;
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}
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//console.log("bg",Date.now()-t);
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};
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exports.reload();
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// Fill a rectangle with the current background style, rect = {x,y,w,h}
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// eg require("clockbg").fillRect({x:10,y:10,w:50,h:50})
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// require("clockbg").fillRect(Bangle.appRect)
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exports.fillRect = function(rect,y,x2,y2) {
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if ("object"!=typeof rect) rect = {x:rect,y:y,w:1+x2-rect,h:1+y2-y};
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if (settings.img) {
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g.setClipRect(rect.x, rect.y, rect.x+rect.w-1, rect.y+rect.h-1).drawImage(settings.img,0,0,settings.imgOpt).setClipRect(0,0,g.getWidth()-1,g.getHeight()-1);
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} else if (settings.style == "color") {
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g.setBgColor(settings.color).clearRect(rect);
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} else {
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console.log("clockbg: No background set!");
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g.setBgColor(g.theme.bg).clearRect(rect);
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}
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}; |