Div positioning (overlays when not wanted)

Div positioning (overlays when not wanted)

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Div positioning (overlays when not wanted)
Tag : css , By : Govind Bhavan
Date : November 25 2020, 01:01 AM

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Text overlays over image using relative positioning

Tag : html , By : user121350
Date : March 29 2020, 07:55 AM
should help you out I want to position a text overlaying an image. Below is my currently used code: , You want position: absolute and the container to be relative:
<td width="10%" style="position: relative;">
    <img src="tempballoon.png" alt="balloon"  style="z-index: -1"/>
    <div style="position:absolute;left:0px;top:0px;font-size: 32px;display: none">

Inaccurate positioning of overlays in Android's MapView

Tag : android , By : dummyadresse
Date : March 29 2020, 07:55 AM
To fix the issue you can do Finally I've found the reason of the problem.
This part was wrong, because Projection was accessed inside the Elapsed delegate. But by that time Projection has already changed its state, which resulted in wrong coordinates.
if (e.Action == MotionEventActions.Down) {
    // Finger has touched screen.
    longpressTimer = new Timer(LONGPRESS_THRESHOLD);
    longpressTimer.AutoReset = false;
    longpressTimer.Elapsed += delegate(object sender, ElapsedEventArgs e_elapsed) {
        GeoPoint longpressLocation = Projection.FromPixels((int)e.GetX(), (int)e.GetY());
        if (OnLongPress != null) {
             OnMapViewLongPressEventArgs args = new OnMapViewLongPressEventArgs();
             args.location = longpressLocation;
             OnLongPress(this, args);


    lastMapCenter = MapCenter;
if (e.Action == MotionEventActions.Down) {
    capturedProjection = Projection.FromPixels((int)e.GetX(), (int)e.GetY());

    // Finger has touched screen.
    longpressTimer = new Timer(LONGPRESS_THRESHOLD);
    longpressTimer.AutoReset = false;
    longpressTimer.Elapsed += (object sender, ElapsedEventArgs e_timer) => {
        if (OnLongPress != null) {
            OnMapViewLongPressEventArgs args = new OnMapViewLongPressEventArgs();
            args.location = capturedProjection;
            OnLongPress(this, args);


    lastMapCenter = MapCenter;

MKMapView overlays redraw(blink) when adding new overlays. MKPolyLines are jagged

Tag : ios , By : user147496
Date : March 29 2020, 07:55 AM
This might help you For the blinking, see this post - it may be a bug in the overlay system.
With the jagged lines, they do appear to be antialiased in your screenshot, but may have been scaled up. From experimentation, I believe that overlays are rendered to a separate bitmap for discrete zoom levels and then rendered over the map view scaled up or down to suit the current zoom level. So it may be that your overlay looks a bit rough at that level but zooming in or out a bit improves it.
if ([overlay isKindOfClass:[MKPolyline class]])
    borderView = [[MKPolylineView alloc] initWithPolyline:overlay];
    borderView.strokeColor = [UIColor blackColor];
    borderView.lineWidth = 1.0;
    return borderView;

Tag : javascript , By : BooTeK
Date : March 29 2020, 07:55 AM
this one helps. Looks like this is a bug with OpenSeadragon! Here's the issue ticket:
var overlaySets = [
    id: 'overlay1',
    px: 100,
    py: 0,
    width: 200,
    height: 200,
    className: 'filter'
    id: 'overlay2',
    px: 100,
    py: 0,
    width: 500,
    height: 500,
    className: 'filter'

viewer.addHandler('open', function() {
  overlaySets.forEach(function(overlaySet, setIndex) {
    var tiledImage = viewer.world.getItemAt(setIndex);
    if (!overlaySet || !tiledImage) {

    overlaySet.forEach(function(overlay) {
      var rect = new OpenSeadragon.Rect(overlay.px, overlay.py, overlay.width, overlay.height);
      rect = tiledImage.imageToViewportRectangle(rect);
      overlay.x = rect.x;
      overlay.y = rect.y;
      overlay.width = rect.width;
      overlay.height = rect.height;
      delete overlay.px;
      delete overlay.py;

FFmpeg: Adding multiple overlays to the video with the fade in/out effect. Command works but the images ( overlays ) doe

Tag : video , By : KaoFloppy
Date : March 29 2020, 07:55 AM
hop of those help? Your timestamps are offset wrong, e.g.
[1]...setpts=PTS+5/TB[ovr1]; but [0:v][ovr1]overlay=0:0:enable='between(t,0,5)'[base1];, so the stream starts after the overlay enabled range. It should be setpts=PTS+0/TB. Reduce all offsets by 5, similarly.
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