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Merge pull request #121 from tophf/editor-autosize

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Editor: maximize height of code boxes when possible
This commit is contained in:
Jason Barnabe 2015-06-09 21:01:08 -05:00
commit 290f0635d8
1 changed files with 52 additions and 1 deletions
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53
edit.js
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@ -481,6 +481,7 @@ function addSection(event, section) {
}
setCleanSection(div);
return div;
}
function removeAppliesTo(event) {
@ -754,7 +755,7 @@ function initWithStyle(style) {
});
style.sections.forEach(function(section) {
setTimeout(function() {
addSection(null, section)
maximizeCodeHeight(addSection(null, section), editors.length == style.sections.length);
}, 0);
});
initHooks();
@ -776,6 +777,50 @@ function initHooks() {
updateTitle();
}
function maximizeCodeHeight(sectionDiv, isLast) {
var cm = getCodeMirrorForSection(sectionDiv);
var stats = maximizeCodeHeight.stats = maximizeCodeHeight.stats || {totalHeight: 0, deltas: []};
if (!stats.cmActualHeight) {
stats.cmActualHeight = getComputedHeight(cm.display.wrapper);
}
if (!stats.sectionMarginTop) {
stats.sectionMarginTop = parseFloat(getComputedStyle(sectionDiv).marginTop);
}
var sectionTop = sectionDiv.getBoundingClientRect().top - stats.sectionMarginTop;
if (!stats.firstSectionTop) {
stats.firstSectionTop = sectionTop;
}
var extrasHeight = getComputedHeight(sectionDiv) - stats.cmActualHeight;
var cmMaxHeight = window.innerHeight - extrasHeight - sectionTop - stats.sectionMarginTop;
var cmDesiredHeight = cm.display.sizer.clientHeight + 2*cm.defaultTextHeight();
var cmGrantableHeight = Math.max(stats.cmActualHeight, Math.min(cmMaxHeight, cmDesiredHeight));
stats.deltas.push(cmGrantableHeight - stats.cmActualHeight);
stats.totalHeight += cmGrantableHeight + extrasHeight;
if (!isLast) {
return;
}
stats.totalHeight += stats.firstSectionTop;
if (stats.totalHeight <= window.innerHeight) {
editors.forEach(function(cm, index) {
cm.setSize(null, stats.deltas[index] + stats.cmActualHeight);
});
return;
}
// scale heights to fill the gap between last section and bottom edge of the window
var sections = document.getElementById("sections");
var available = window.innerHeight - sections.getBoundingClientRect().bottom -
parseFloat(getComputedStyle(sections).marginBottom);
if (available <= 0) {
return;
}
var totalDelta = stats.deltas.reduce(function(sum, d) { return sum + d; }, 0);
var q = available / totalDelta;
var baseHeight = stats.cmActualHeight - stats.sectionMarginTop;
stats.deltas.forEach(function(delta, index) {
editors[index].setSize(null, baseHeight + Math.floor(q * delta));
});
}
function updateTitle() {
var DIRTY_TITLE = "* $";
@ -1055,3 +1100,9 @@ function querySelectorParent(node, selector) {
function stringAsRegExp(s, flags) {
return new RegExp(s.replace(/[{}()\[\]\/\\.+?^$:=*!|]/g, "\\$&"), flags);
}
function getComputedHeight(el) {
var compStyle = getComputedStyle(el);
return el.getBoundingClientRect().height +
parseFloat(compStyle.marginTop) + parseFloat(compStyle.marginBottom);
}