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Added support of on changing from view mode to other mode will auto scroll to corresponding position

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This commit is contained in:
Wu Cheng-Han 2015-09-25 18:41:03 +08:00
parent 4b81ee9104
commit b86a695f9c
1 changed files with 24 additions and 2 deletions
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26
public/js/index.js
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@ -625,12 +625,15 @@ function toggleMode() {
}
}
var lastMode = null;
function changeMode(type) {
lockNavbar();
saveInfo();
if (type)
if (type) {
lastMode = currentMode;
currentMode = type;
checkEditorStyle();
}
var responsiveClass = "col-lg-6 col-md-6 col-sm-6";
var scrollClass = "ui-scrollable";
ui.area.codemirror.removeClass(scrollClass);
@ -687,6 +690,14 @@ function changeMode(type) {
restoreInfo();
if (lastMode == modeType.view && currentMode == modeType.both) {
if (!scrollMap || !lineHeightMap)
buildMapInner();
var scrollMapNearest = closestIndex(scrollMap, lastInfo.view.scroll.top);
var lineHeightMapNearest = closestIndex(lineHeightMap, scrollMapNearest);
var height = lineHeightMapNearest * defaultTextHeight;
editor.scrollTo(null, height);
}
ui.toolbar.both.removeClass("active");
ui.toolbar.edit.removeClass("active");
@ -713,6 +724,17 @@ function lockNavbar() {
var unlockNavbar = _.debounce(function () {
$('.navbar').removeClass('locked');
}, 200);
function closestIndex(arr, closestTo) {
var closest = Math.max.apply(null, arr); //Get the highest number in arr in case it match nothing.
var index = 0;
for (var i = 0; i < arr.length; i++) { //Loop the array
if (arr[i] >= closestTo && arr[i] < closest) {
closest = arr[i]; //Check if it's higher than your number, but lower than your closest value
index = i;
}
}
return index; // return the value
}
//button actions