bryan
/
BangleApps
0
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

kineticscroll - Directly draw while finger is touching

master
Martin Boonk 2024-03-26 10:41:50 +01:00
parent ecf31ce94a
commit 6e67f6a806
1 changed files with 7 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
apps/kineticscroll/boot.js
View File

@ -61,11 +61,14 @@
const draw = () => { const draw = () => {
if (velocity > MIN_VELOCITY){ if (velocity > MIN_VELOCITY){
if (!scheduledDraw)
scheduledDraw = setTimeout(draw, 0);
velocity *= 1-((Date.now() - lastTouchedDrag) / 8000); velocity *= 1-((Date.now() - lastTouchedDrag) / 8000);
if (velocity <= MIN_VELOCITY){ if (velocity <= MIN_VELOCITY){
velocity = 0; velocity = 0;
} else {
s.scroll -= velocity * direction;
} }
s.scroll -= velocity * direction;
} }
if (s.scroll > menuScrollMax){ if (s.scroll > menuScrollMax){
@ -81,11 +84,6 @@
rScroll = s.scroll &~1; rScroll = s.scroll &~1;
let d = oldScroll-rScroll; let d = oldScroll-rScroll;
if (velocity > MIN_VELOCITY)
scheduledDraw = setTimeout(draw, 0);
else
scheduledDraw = undefined;
if (!d) { if (!d) {
return; return;
} }
@ -111,11 +109,12 @@
} }
} }
g.setClipRect(0,0,g.getWidth()-1,g.getHeight()-1); g.setClipRect(0,0,g.getWidth()-1,g.getHeight()-1);
scheduledDraw = undefined;
}; };
const dragHandler = e=>{ const dragHandler = e=>{
let now=Date.now(); let now=Date.now();
direction = e.dy > 0 ? 1 : -1; direction = Math.sign(e.dy);
s.scroll -= e.dy; s.scroll -= e.dy;
if (e.b > 0){ if (e.b > 0){
// Finger touches the display or direction has been reversed // Finger touches the display or direction has been reversed
@ -134,10 +133,7 @@
} }
lastDragStart = 0; lastDragStart = 0;
} }
draw();
if (!scheduledDraw){
scheduledDraw = setTimeout(draw, 0);
}
}; };
let uiOpts = { let uiOpts = {