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Update lib.js to not clear the trace of user input 

Change the way the display is updated as to keep user input trace intact until they lift their finger from the screen. 
Now only the marker is updated every second as opposed to the whole screen.
To achieve this the marker is reimplemented outside the wrapString-method with g.fillRect() and g.clearRect() as well as a newly introduced function findMarker().
master
thyttan 2022-04-09 19:49:16 +02:00 committed by GitHub
parent dc273a7a12
commit e6f49639be
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1 changed files with 32 additions and 3 deletions
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35
apps/kbswipe/lib.js
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@ -45,11 +45,39 @@ exports.getStrokes( (id,s) => Bangle.strokes[id] = Unistroke.new(s) );
var flashToggle = false;
const R = Bangle.appRect;
var Rx1;
var Rx2;
var Ry1;
var Ry2;
function findMarker(strArr) {
if (strArr.length == 0) {
Rx1 = 4;
Rx2 = 6*4;
Ry1 = 8*4;
Ry2 = 8*4 + 3;
} else if (strArr.length <= 4) {
Rx1 = (strArr[strArr.length-1].length)%7*6*4 + 4 ;
Rx2 = (strArr[strArr.length-1].length)%7*6*4 + 6*4;
Ry1 = (strArr.length)*(8*4) + Math.floor((strArr[strArr.length-1].length)/7)*(8*4);
Ry2 = (strArr.length)*(8*4) + Math.floor((strArr[strArr.length-1].length)/7)*(8*4) + 3;
} else {
Rx1 = (strArr[strArr.length-1].length)%7*6*4 + 4 ;
Rx2 = (strArr[strArr.length-1].length)%7*6*4 + 6*4;
Ry1 = (4)*(8*4) + Math.floor((strArr[strArr.length-1].length)/7)*(8*4);
Ry2 = (4)*(8*4) + Math.floor((strArr[strArr.length-1].length)/7)*(8*4) + 3;
}
//print(Rx1,Rx2,Ry1, Ry2);
return {x:Rx1,y:Ry1,x2:Rx2,y2:Ry2};
}
function draw(noclear) {
g.reset();
if (!noclear) g.clearRect(R);
var l = g.setFont("6x8:4").wrapString(text+(flashToggle?"_":" "), R.w-8);
var l = g.setFont("6x8:4").wrapString(text+' ', R.w-8);
if (!l) l = [];
//print(text+':');
//print(l);
if (!noclear) (flashToggle?(g.fillRect(findMarker(l))):(g.clearRect(findMarker(l))));
if (l.length>4) l=l.slice(-4);
g.drawString(l.join("\n"),R.x+4,R.y+4);
}
@ -80,6 +108,7 @@ exports.getStrokes( (id,s) => Bangle.strokes[id] = Unistroke.new(s) );
var ch = o.stroke;
if (ch=="\b") text = text.slice(0,-1);
else text += ch;
g.clearRect(R);
}
flashToggle = true;
draw();
@ -87,7 +116,7 @@ exports.getStrokes( (id,s) => Bangle.strokes[id] = Unistroke.new(s) );
Bangle.on('stroke',strokeHandler);
g.reset().clearRect(R);
show();
draw(true);
draw(false);
var flashInterval;
return new Promise((resolve,reject) => {