gnome-shell/tests/interactive/background-size.js

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// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
const UI = imports.testcommon.ui;
const { Cogl, Clutter, Meta, St } = imports.gi;
function test() {
Meta.init();
let stage = Meta.get_backend().get_stage();
UI.init(stage);
let vbox = new St.BoxLayout({ style: 'background: #ffee88;' });
vbox.add_constraint(new Clutter.BindConstraint({ source: stage,
coordinate: Clutter.BindCoordinate.SIZE }));
stage.add_actor(vbox);
let scroll = new St.ScrollView();
vbox.add(scroll, { expand: true });
vbox = new St.BoxLayout({ vertical: true,
style: 'padding: 10px;'
+ 'spacing: 20px;' });
scroll.add_actor(vbox);
let tbox = null;
function addTestCase(image, size, backgroundSize, useCairo) {
let obin = new St.Bin({ style: 'border: 3px solid green;' });
tbox.add(obin);
let [width, height] = size;
let bin = new St.Bin({ style_class: 'background-image-' + image,
width: width,
height: height,
style: `${useCairo
? 'border: 1px solid transparent;' : ''
} background-size: ${backgroundSize};`,
x_fill: true,
y_fill: true
});
obin.set_child(bin);
bin.set_child(new St.Label({ text: backgroundSize + (useCairo ? ' (cairo)' : ' (cogl)'),
style: 'font-size: 15px;'
+ 'text-align: center;'
}));
}
function addTestLine(image, size) {
const backgroundSizes = ["auto", "contain", "cover", "200px 200px", "100px 100px", "100px 200px"];
let [width, height] = size;
vbox.add(new St.Label({ text: image + '.svg / ' + width + '×' + height,
style: 'font-size: 15px;'
+ 'text-align: center;'
}));
tbox = new St.BoxLayout({ style: 'spacing: 20px;' });
vbox.add(tbox);
for (let s of backgroundSizes)
addTestCase(image, size, s, false);
for (let s of backgroundSizes)
addTestCase(image, size, s, true);
}
function addTestImage(image) {
const containerSizes = [[100, 100], [200, 200], [250, 250], [100, 250], [250, 100]];
for (let size of containerSizes)
addTestLine(image, size);
}
addTestImage ('200-200');
addTestImage ('200-100');
addTestImage ('100-200');
UI.main(stage);
}
test();