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popupMenu: Simplify allocation code

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Use ClutterActor.allocate_align_fill() so we don't have to do
this math ourselves. At the same time, clean up the RTL handling
so that it's easier to follow.

https://bugzilla.gnome.org/show_bug.cgi?id=702539
This commit is contained in:
Jasper St. Pierre
2013-06-14 17:53:59 -04:00
parent 2aae272d86
commit 2fa40555e6
9 changed files with 97 additions and 136 deletions
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83
js/ui/popupMenu.js
View File

@ -268,6 +268,7 @@ const PopupBaseMenuItem = new Lang.Class({
},
_allocate: function(actor, box, flags) {
let width = box.x2 - box.x1;
let height = box.y2 - box.y1;
let direction = this.actor.get_text_direction();
@ -290,86 +291,46 @@ const PopupBaseMenuItem = new Lang.Class({
this._ornamentLabel.allocate(ornamentBox, flags);
let x;
if (direction == Clutter.TextDirection.LTR)
x = box.x1;
else
x = box.x2;
// if direction is ltr, x is the right edge of the last added
// actor, and it's constantly increasing, whereas if rtl, x is
// the left edge and it decreases
let x = box.x1;
for (let i = 0, col = 0; i < this._children.length; i++) {
let child = this._children[i];
let childBox = new Clutter.ActorBox();
let [minWidth, naturalWidth] = child.actor.get_preferred_width(-1);
let availWidth, extraWidth;
if (this._columnWidths) {
if (child.span == -1) {
if (direction == Clutter.TextDirection.LTR)
availWidth = box.x2 - x;
else
availWidth = x - box.x1;
} else {
let availWidth;
if (child.span == -1) {
availWidth = box.x2 - x;
} else {
if (this._columnWidths) {
availWidth = 0;
for (let j = 0; j < child.span; j++)
availWidth += this._columnWidths[col++];
}
extraWidth = availWidth - naturalWidth;
} else {
if (child.span == -1) {
if (direction == Clutter.TextDirection.LTR)
availWidth = box.x2 - x;
else
availWidth = x - box.x1;
} else {
availWidth = naturalWidth;
}
extraWidth = 0;
}
if (direction == Clutter.TextDirection.LTR) {
if (child.expand) {
childBox.x1 = x;
childBox.x2 = x + availWidth;
} else if (child.align === St.Align.MIDDLE) {
childBox.x1 = x + Math.round(extraWidth / 2);
childBox.x2 = childBox.x1 + naturalWidth;
} else if (child.align === St.Align.END) {
childBox.x2 = x + availWidth;
childBox.x1 = childBox.x2 - naturalWidth;
} else {
childBox.x1 = x;
childBox.x2 = x + naturalWidth;
}
} else {
if (child.expand) {
childBox.x1 = x - availWidth;
childBox.x2 = x;
} else if (child.align === St.Align.MIDDLE) {
childBox.x1 = x - Math.round(extraWidth / 2);
childBox.x2 = childBox.x1 + naturalWidth;
} else if (child.align === St.Align.END) {
// align to the left
childBox.x1 = x - availWidth;
childBox.x2 = childBox.x1 + naturalWidth;
} else {
// align to the right
childBox.x2 = x;
childBox.x1 = x - naturalWidth;
}
}
if (direction == Clutter.TextDirection.RTL)
childBox.x1 = width - x - availWidth;
else
childBox.x1 = x;
childBox.x2 = childBox.x1 + availWidth;
let [minHeight, naturalHeight] = child.actor.get_preferred_height(childBox.x2 - childBox.x1);
childBox.y1 = Math.round(box.y1 + (height - naturalHeight) / 2);
childBox.y2 = childBox.y1 + naturalHeight;
child.actor.allocate(childBox, flags);
let [xAlign, yAlign] = St.get_align_factors(child.align,
St.Align.MIDDLE);
if (direction == Clutter.TextDirection.LTR)
x += availWidth + this._spacing;
else
x -= availWidth + this._spacing;
// It's called "expand", but it's really more like "fill"
let xFill = child.expand;
child.actor.allocate_align_fill(childBox,
xAlign, yAlign,
xFill, true,
flags);
x += availWidth + this._spacing;
}
}
});