Dragging a Konva layer from empty areas
0
I'd like to drag a Konva layer even if empty. I see that I can drag the layer only where objects are present (the code shows that you can drag where the rectangle is but nowhere else).
How can I drag the layer dragging empty parts?
Moreover, I see that also the mouseenter and mousleave aren't respected if you are out of the objects of the layer.
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
</head>
<body>
<script src="js/modulePattern.js"></script>
<script src="https://unpkg.com/konva@2.4.2/konva.min.js"></script>
<div id="container"></div>
<script>
function demo() {
var stage = new Konva.Stage({
container: 'container',
width: 100,
height: 100
});
var layer = new Konva.Layer({draggable: true});
stage.add(layer);
layer.on("dragmove", function() {
console.log(this.x(), this.y())
});
layer.on("mouseenter", function() {
stage.container().style.cursor = 'pointer';
});
layer.on("mouseleave", function() {
stage.container().style.cursor = 'default';
});
var rect = new Konva.Rect({
width: 50,
height: 50,
fill: 'red',
stroke: 'black',
strokeWidth: 5
});
layer.add(rect);
stage.draw();
}
demo();
</script>
</body>
</html>javascript konvajs
asked Nov 12 '18 at 22:14
cdarwincdarwin
1,45872952
add a comment |
0
I'd like to drag a Konva layer even if empty. I see that I can drag the layer only where objects are present (the code shows that you can drag where the rectangle is but nowhere else).
How can I drag the layer dragging empty parts?
Moreover, I see that also the mouseenter and mousleave aren't respected if you are out of the objects of the layer.
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
</head>
<body>
<script src="js/modulePattern.js"></script>
<script src="https://unpkg.com/konva@2.4.2/konva.min.js"></script>
<div id="container"></div>
<script>
function demo() {
var stage = new Konva.Stage({
container: 'container',
width: 100,
height: 100
});
var layer = new Konva.Layer({draggable: true});
stage.add(layer);
layer.on("dragmove", function() {
console.log(this.x(), this.y())
});
layer.on("mouseenter", function() {
stage.container().style.cursor = 'pointer';
});
layer.on("mouseleave", function() {
stage.container().style.cursor = 'default';
});
var rect = new Konva.Rect({
width: 50,
height: 50,
fill: 'red',
stroke: 'black',
strokeWidth: 5
});
layer.add(rect);
stage.draw();
}
demo();
</script>
</body>
</html>javascript konvajs
asked Nov 12 '18 at 22:14
cdarwincdarwin
1,45872952
add a comment |
0
0
0
I'd like to drag a Konva layer even if empty. I see that I can drag the layer only where objects are present (the code shows that you can drag where the rectangle is but nowhere else).
How can I drag the layer dragging empty parts?
Moreover, I see that also the mouseenter and mousleave aren't respected if you are out of the objects of the layer.
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
</head>
<body>
<script src="js/modulePattern.js"></script>
<script src="https://unpkg.com/konva@2.4.2/konva.min.js"></script>
<div id="container"></div>
<script>
function demo() {
var stage = new Konva.Stage({
container: 'container',
width: 100,
height: 100
});
var layer = new Konva.Layer({draggable: true});
stage.add(layer);
layer.on("dragmove", function() {
console.log(this.x(), this.y())
});
layer.on("mouseenter", function() {
stage.container().style.cursor = 'pointer';
});
layer.on("mouseleave", function() {
stage.container().style.cursor = 'default';
});
var rect = new Konva.Rect({
width: 50,
height: 50,
fill: 'red',
stroke: 'black',
strokeWidth: 5
});
layer.add(rect);
stage.draw();
}
demo();
</script>
</body>
</html>javascript konvajs
asked Nov 12 '18 at 22:14
cdarwincdarwin
1,45872952
I'd like to drag a Konva layer even if empty. I see that I can drag the layer only where objects are present (the code shows that you can drag where the rectangle is but nowhere else).
How can I drag the layer dragging empty parts?
Moreover, I see that also the mouseenter and mousleave aren't respected if you are out of the objects of the layer.
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
</head>
<body>
<script src="js/modulePattern.js"></script>
<script src="https://unpkg.com/konva@2.4.2/konva.min.js"></script>
<div id="container"></div>
<script>
function demo() {
var stage = new Konva.Stage({
container: 'container',
width: 100,
height: 100
});
var layer = new Konva.Layer({draggable: true});
stage.add(layer);
layer.on("dragmove", function() {
console.log(this.x(), this.y())
});
layer.on("mouseenter", function() {
stage.container().style.cursor = 'pointer';
});
layer.on("mouseleave", function() {
stage.container().style.cursor = 'default';
});
var rect = new Konva.Rect({
width: 50,
height: 50,
fill: 'red',
stroke: 'black',
strokeWidth: 5
});
layer.add(rect);
stage.draw();
}
demo();
</script>
</body>
</html><!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
</head>
<body>
<script src="js/modulePattern.js"></script>
<script src="https://unpkg.com/konva@2.4.2/konva.min.js"></script>
<div id="container"></div>
<script>
function demo() {
var stage = new Konva.Stage({
container: 'container',
width: 100,
height: 100
});
var layer = new Konva.Layer({draggable: true});
stage.add(layer);
layer.on("dragmove", function() {
console.log(this.x(), this.y())
});
layer.on("mouseenter", function() {
stage.container().style.cursor = 'pointer';
});
layer.on("mouseleave", function() {
stage.container().style.cursor = 'default';
});
var rect = new Konva.Rect({
width: 50,
height: 50,
fill: 'red',
stroke: 'black',
strokeWidth: 5
});
layer.add(rect);
stage.draw();
}
demo();
</script>
</body>
</html><!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
</head>
<body>
<script src="js/modulePattern.js"></script>
<script src="https://unpkg.com/konva@2.4.2/konva.min.js"></script>
<div id="container"></div>
<script>
function demo() {
var stage = new Konva.Stage({
container: 'container',
width: 100,
height: 100
});
var layer = new Konva.Layer({draggable: true});
stage.add(layer);
layer.on("dragmove", function() {
console.log(this.x(), this.y())
});
layer.on("mouseenter", function() {
stage.container().style.cursor = 'pointer';
});
layer.on("mouseleave", function() {
stage.container().style.cursor = 'default';
});
var rect = new Konva.Rect({
width: 50,
height: 50,
fill: 'red',
stroke: 'black',
strokeWidth: 5
});
layer.add(rect);
stage.draw();
}
demo();
</script>
</body>
</html>javascript konvajs
javascript konvajs
asked Nov 12 '18 at 22:14
cdarwincdarwin
1,45872952
asked Nov 12 '18 at 22:14
cdarwincdarwin
1,45872952
edited Nov 12 '18 at 23:31
cdarwin
asked Nov 12 '18 at 22:14
cdarwincdarwin
1,45872952
asked Nov 12 '18 at 22:14
cdarwincdarwin
1,45872952
asked Nov 12 '18 at 22:14
cdarwincdarwin
1,45872952
1,45872952
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
1
Konva does not detect events on empty space of layers. And it is unclear how can it do it if you have several layers on the stage.
If you still need to listen on empty layers and make a layer draggable at any space you can:
Make stage draggable instead and listen events on it (
clickwill work on empty space too).Add a transparent rectangle as a background, so it will be used to listen to events:
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
</head>
<body>
<script src="js/modulePattern.js"></script>
<script src="https://unpkg.com/konva@2.4.2/konva.min.js"></script>
<div id="container"></div>
<script>
function demo() {
var stage = new Konva.Stage({
container: 'container',
width: 300,
height: 300
});
var layer = new Konva.Layer({draggable: true});
stage.add(layer);
layer.on("mouseenter", function() {
stage.container().style.cursor = 'pointer';
});
layer.on("mouseleave", function() {
stage.container().style.cursor = 'default';
});
var rect = new Konva.Rect({
width: 50,
height: 50,
fill: 'red',
stroke: 'black',
strokeWidth: 5
});
var back = new Konva.Rect({
fill: 'red',
width: stage.width(),
height: stage.height()
})
layer.add(back);
// move rectangle so it always stay on the screen, no matter where layer it
layer.on('dragend', function() {
back.setAbsolutePosition({x: 0, y: 0});
layer.draw();
});
layer.add(rect);
stage.draw();
}
demo();
</script>
</body>
</html>answered Nov 13 '18 at 13:17
lavrtonlavrton
7,24221231
add a comment |
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
draft saved
draft discarded
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53270863%2fdragging-a-konva-layer-from-empty-areas%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
1
Konva does not detect events on empty space of layers. And it is unclear how can it do it if you have several layers on the stage.
If you still need to listen on empty layers and make a layer draggable at any space you can:
Make stage draggable instead and listen events on it (
clickwill work on empty space too).Add a transparent rectangle as a background, so it will be used to listen to events:
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
</head>
<body>
<script src="js/modulePattern.js"></script>
<script src="https://unpkg.com/konva@2.4.2/konva.min.js"></script>
<div id="container"></div>
<script>
function demo() {
var stage = new Konva.Stage({
container: 'container',
width: 300,
height: 300
});
var layer = new Konva.Layer({draggable: true});
stage.add(layer);
layer.on("mouseenter", function() {
stage.container().style.cursor = 'pointer';
});
layer.on("mouseleave", function() {
stage.container().style.cursor = 'default';
});
var rect = new Konva.Rect({
width: 50,
height: 50,
fill: 'red',
stroke: 'black',
strokeWidth: 5
});
var back = new Konva.Rect({
fill: 'red',
width: stage.width(),
height: stage.height()
})
layer.add(back);
// move rectangle so it always stay on the screen, no matter where layer it
layer.on('dragend', function() {
back.setAbsolutePosition({x: 0, y: 0});
layer.draw();
});
layer.add(rect);
stage.draw();
}
demo();
</script>
</body>
</html>answered Nov 13 '18 at 13:17
lavrtonlavrton
7,24221231
add a comment |
1
Konva does not detect events on empty space of layers. And it is unclear how can it do it if you have several layers on the stage.
If you still need to listen on empty layers and make a layer draggable at any space you can:
Make stage draggable instead and listen events on it (
clickwill work on empty space too).Add a transparent rectangle as a background, so it will be used to listen to events:
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
</head>
<body>
<script src="js/modulePattern.js"></script>
<script src="https://unpkg.com/konva@2.4.2/konva.min.js"></script>
<div id="container"></div>
<script>
function demo() {
var stage = new Konva.Stage({
container: 'container',
width: 300,
height: 300
});
var layer = new Konva.Layer({draggable: true});
stage.add(layer);
layer.on("mouseenter", function() {
stage.container().style.cursor = 'pointer';
});
layer.on("mouseleave", function() {
stage.container().style.cursor = 'default';
});
var rect = new Konva.Rect({
width: 50,
height: 50,
fill: 'red',
stroke: 'black',
strokeWidth: 5
});
var back = new Konva.Rect({
fill: 'red',
width: stage.width(),
height: stage.height()
})
layer.add(back);
// move rectangle so it always stay on the screen, no matter where layer it
layer.on('dragend', function() {
back.setAbsolutePosition({x: 0, y: 0});
layer.draw();
});
layer.add(rect);
stage.draw();
}
demo();
</script>
</body>
</html>answered Nov 13 '18 at 13:17
lavrtonlavrton
7,24221231
add a comment |
1
1
1
Konva does not detect events on empty space of layers. And it is unclear how can it do it if you have several layers on the stage.
If you still need to listen on empty layers and make a layer draggable at any space you can:
Make stage draggable instead and listen events on it (
clickwill work on empty space too).Add a transparent rectangle as a background, so it will be used to listen to events:
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
</head>
<body>
<script src="js/modulePattern.js"></script>
<script src="https://unpkg.com/konva@2.4.2/konva.min.js"></script>
<div id="container"></div>
<script>
function demo() {
var stage = new Konva.Stage({
container: 'container',
width: 300,
height: 300
});
var layer = new Konva.Layer({draggable: true});
stage.add(layer);
layer.on("mouseenter", function() {
stage.container().style.cursor = 'pointer';
});
layer.on("mouseleave", function() {
stage.container().style.cursor = 'default';
});
var rect = new Konva.Rect({
width: 50,
height: 50,
fill: 'red',
stroke: 'black',
strokeWidth: 5
});
var back = new Konva.Rect({
fill: 'red',
width: stage.width(),
height: stage.height()
})
layer.add(back);
// move rectangle so it always stay on the screen, no matter where layer it
layer.on('dragend', function() {
back.setAbsolutePosition({x: 0, y: 0});
layer.draw();
});
layer.add(rect);
stage.draw();
}
demo();
</script>
</body>
</html>answered Nov 13 '18 at 13:17
lavrtonlavrton
7,24221231
Konva does not detect events on empty space of layers. And it is unclear how can it do it if you have several layers on the stage.
If you still need to listen on empty layers and make a layer draggable at any space you can:
Make stage draggable instead and listen events on it (
clickwill work on empty space too).Add a transparent rectangle as a background, so it will be used to listen to events:
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
</head>
<body>
<script src="js/modulePattern.js"></script>
<script src="https://unpkg.com/konva@2.4.2/konva.min.js"></script>
<div id="container"></div>
<script>
function demo() {
var stage = new Konva.Stage({
container: 'container',
width: 300,
height: 300
});
var layer = new Konva.Layer({draggable: true});
stage.add(layer);
layer.on("mouseenter", function() {
stage.container().style.cursor = 'pointer';
});
layer.on("mouseleave", function() {
stage.container().style.cursor = 'default';
});
var rect = new Konva.Rect({
width: 50,
height: 50,
fill: 'red',
stroke: 'black',
strokeWidth: 5
});
var back = new Konva.Rect({
fill: 'red',
width: stage.width(),
height: stage.height()
})
layer.add(back);
// move rectangle so it always stay on the screen, no matter where layer it
layer.on('dragend', function() {
back.setAbsolutePosition({x: 0, y: 0});
layer.draw();
});
layer.add(rect);
stage.draw();
}
demo();
</script>
</body>
</html><!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
</head>
<body>
<script src="js/modulePattern.js"></script>
<script src="https://unpkg.com/konva@2.4.2/konva.min.js"></script>
<div id="container"></div>
<script>
function demo() {
var stage = new Konva.Stage({
container: 'container',
width: 300,
height: 300
});
var layer = new Konva.Layer({draggable: true});
stage.add(layer);
layer.on("mouseenter", function() {
stage.container().style.cursor = 'pointer';
});
layer.on("mouseleave", function() {
stage.container().style.cursor = 'default';
});
var rect = new Konva.Rect({
width: 50,
height: 50,
fill: 'red',
stroke: 'black',
strokeWidth: 5
});
var back = new Konva.Rect({
fill: 'red',
width: stage.width(),
height: stage.height()
})
layer.add(back);
// move rectangle so it always stay on the screen, no matter where layer it
layer.on('dragend', function() {
back.setAbsolutePosition({x: 0, y: 0});
layer.draw();
});
layer.add(rect);
stage.draw();
}
demo();
</script>
</body>
</html><!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
</head>
<body>
<script src="js/modulePattern.js"></script>
<script src="https://unpkg.com/konva@2.4.2/konva.min.js"></script>
<div id="container"></div>
<script>
function demo() {
var stage = new Konva.Stage({
container: 'container',
width: 300,
height: 300
});
var layer = new Konva.Layer({draggable: true});
stage.add(layer);
layer.on("mouseenter", function() {
stage.container().style.cursor = 'pointer';
});
layer.on("mouseleave", function() {
stage.container().style.cursor = 'default';
});
var rect = new Konva.Rect({
width: 50,
height: 50,
fill: 'red',
stroke: 'black',
strokeWidth: 5
});
var back = new Konva.Rect({
fill: 'red',
width: stage.width(),
height: stage.height()
})
layer.add(back);
// move rectangle so it always stay on the screen, no matter where layer it
layer.on('dragend', function() {
back.setAbsolutePosition({x: 0, y: 0});
layer.draw();
});
layer.add(rect);
stage.draw();
}
demo();
</script>
</body>
</html>answered Nov 13 '18 at 13:17
lavrtonlavrton
7,24221231
answered Nov 13 '18 at 13:17
lavrtonlavrton
7,24221231
answered Nov 13 '18 at 13:17
lavrtonlavrton
7,24221231
answered Nov 13 '18 at 13:17
lavrtonlavrton
7,24221231
7,24221231
add a comment |
add a comment |
draft saved
draft discarded
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
draft saved
draft discarded
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53270863%2fdragging-a-konva-layer-from-empty-areas%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
