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Tweaked scroll link to perform simultaneous synchronization

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This commit is contained in:
benweet 2013-12-02 22:10:19 +00:00
parent ad435f0730
commit 180e98219e
1 changed files with 44 additions and 39 deletions
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83
public/res/extensions/scrollLink.js
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@ -87,7 +87,8 @@ define([
var isScrollPreview = false;
var isEditorMoving = false;
var isPreviewMoving = false;
var doScrollLink = _.debounce(function() {
var scrollingHelper = $('<div>');
var doScrollLink = _.throttle(function() {
if(mdSectionList.length === 0 || mdSectionList.length !== htmlSectionList.length) {
// Delay
doScrollLink();
@ -112,7 +113,10 @@ define([
}
var destScrollTop;
// Perform the animation if diff > 9px
if(isScrollEditor === true && Math.abs(editorScrollTop - lastEditorScrollTop) > 9) {
if(isScrollEditor === true) {
if(Math.abs(editorScrollTop - lastEditorScrollTop) <= 9) {
return;
}
isScrollEditor = false;
// Animate the preview
lastEditorScrollTop = editorScrollTop;
@ -124,25 +128,28 @@ define([
if(Math.abs(destScrollTop - previewScrollTop) <= 9) {
// Skip the animation if diff is <= 9
lastPreviewScrollTop = previewScrollTop;
return;
}
else {
isPreviewMoving = true;
$previewElt.animate({
scrollTop: destScrollTop
}, {
easing: 'easeOutSine',
complete: function() {
lastPreviewScrollTop = destScrollTop;
},
always: function() {
_.defer(function() {
isPreviewMoving = false;
});
}
});
}
$previewElt.stop(true).animate({
scrollTop: destScrollTop
}, {
easing: 'easeOutSine',
duration: 200,
step: function(now) {
isPreviewMoving = true;
lastPreviewScrollTop = previewScrollTop + now;
},
done: function() {
_.defer(function() {
isPreviewMoving = false;
});
},
});
}
else if(isScrollPreview === true && Math.abs(previewScrollTop - lastPreviewScrollTop) > 9) {
else if(isScrollPreview === true) {
if(Math.abs(previewScrollTop - lastPreviewScrollTop) <= 9) {
return;
}
isScrollPreview = false;
// Animate the editor
lastPreviewScrollTop = previewScrollTop;
@ -156,28 +163,26 @@ define([
if(Math.abs(destScrollTop - editorScrollTop) <= 9) {
// Skip the animation if diff is <= 9
lastEditorScrollTop = editorScrollTop;
return;
}
else {
isEditorMoving = true;
$("<div>").animate({
value: destScrollTop - editorScrollTop
}, {
easing: 'easeOutSine',
step: function(now) {
aceEditor.session.setScrollTop(editorScrollTop + now);
},
complete: function() {
lastEditorScrollTop = destScrollTop;
},
always: function() {
_.defer(function() {
isEditorMoving = false;
});
}
});
}
scrollingHelper.stop(true).css('value', 0).animate({
value: destScrollTop - editorScrollTop
}, {
easing: 'easeOutSine',
duration: 200,
step: function(now) {
isEditorMoving = true;
lastEditorScrollTop = editorScrollTop + now;
aceEditor.session.setScrollTop(lastEditorScrollTop);
},
done: function() {
setTimeout(function() {
isEditorMoving = false;
});
},
});
}
}, 500);
}, 100);
scrollLink.onLayoutResize = function() {
isScrollEditor = true;