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iconGrid: Split out _calculateChildBox

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Split out the calculation of the child box in allocation function
to be reusable by subclasses and let the code be more modular

https://bugzilla.gnome.org/show_bug.cgi?id=706081
This commit is contained in:
Carlos Soriano 2013-08-21 19:16:58 +02:00
parent a27b44a3c2
commit cc5198205d
1 changed files with 24 additions and 19 deletions
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43
js/ui/iconGrid.js
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@ -283,25 +283,7 @@ const IconGrid = new Lang.Class({
let columnIndex = 0;
let rowIndex = 0;
for (let i = 0; i < children.length; i++) {
let [childMinWidth, childMinHeight, childNaturalWidth, childNaturalHeight]
= children[i].get_preferred_size();
/* Center the item in its allocation horizontally */
let width = Math.min(this._hItemSize, childNaturalWidth);
let childXSpacing = Math.max(0, width - childNaturalWidth) / 2;
let height = Math.min(this._vItemSize, childNaturalHeight);
let childYSpacing = Math.max(0, height - childNaturalHeight) / 2;
let childBox = new Clutter.ActorBox();
if (Clutter.get_default_text_direction() == Clutter.TextDirection.RTL) {
let _x = box.x2 - (x + width);
childBox.x1 = Math.floor(_x - childXSpacing);
} else {
childBox.x1 = Math.floor(x + childXSpacing);
}
childBox.y1 = Math.floor(y + childYSpacing);
childBox.x2 = childBox.x1 + width;
childBox.y2 = childBox.y1 + height;
let childBox = this._calculateChildBox(children[i], x, y, box);
if (this._rowLimit && rowIndex >= this._rowLimit ||
this._fillParent && childBox.y2 > availHeight) {
@ -326,6 +308,29 @@ const IconGrid = new Lang.Class({
}
},
_calculateChildBox: function(child, x, y, box) {
let [childMinWidth, childMinHeight, childNaturalWidth, childNaturalHeight] =
child.get_preferred_size();
/* Center the item in its allocation horizontally */
let width = Math.min(this._hItemSize, childNaturalWidth);
let childXSpacing = Math.max(0, width - childNaturalWidth) / 2;
let height = Math.min(this._vItemSize, childNaturalHeight);
let childYSpacing = Math.max(0, height - childNaturalHeight) / 2;
let childBox = new Clutter.ActorBox();
if (Clutter.get_default_text_direction() == Clutter.TextDirection.RTL) {
let _x = box.x2 - (x + width);
childBox.x1 = Math.floor(_x - childXSpacing);
} else {
childBox.x1 = Math.floor(x + childXSpacing);
}
childBox.y1 = Math.floor(y + childYSpacing);
childBox.x2 = childBox.x1 + width;
childBox.y2 = childBox.y1 + height;
return childBox;
},
childrenInRow: function(rowWidth) {
return this._computeLayout(rowWidth)[0];
},