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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
// Test the drag and zooming behavior
"use strict";
const CanvasUtils = require("resource://devtools/client/memory/components/tree-map/canvas-utils.js");
const DragZoom = require("resource://devtools/client/memory/components/tree-map/drag-zoom.js");
const TEST_URL = "data:text/html,<html><body></body></html>";
const PIXEL_SCROLL_MODE = 0;
const PIXEL_DELTA = 10;
const MAX_RAF_LOOP = 1000;
this.test = makeMemoryTest(TEST_URL, async function ({ panel }) {
const panelWin = panel.panelWin;
const panelDoc = panelWin.document;
const div = panelDoc.createElement("div");
Object.assign(div.style, {
width: "100px",
height: "200px",
position: "absolute",
left: 0,
top: 0,
});
const rafMock = createRAFMock();
panelDoc.body.appendChild(div);
const canvases = new CanvasUtils(div, 0);
const dragZoom = new DragZoom(canvases.container, 0, rafMock.raf);
const style = canvases.container.style;
info("Check initial state of dragZoom");
{
is(dragZoom.zoom, 0, "Zooming starts at 0");
is(dragZoom.smoothZoom, 0, "Smoothed zooming starts at 0");
is(rafMock.timesCalled, 0, "No RAFs have been queued");
is(
style.transform,
"translate(0px) scale(1)",
"No transforms have been done."
);
canvases.container.dispatchEvent(
new WheelEvent("wheel", {
deltaY: -PIXEL_DELTA,
deltaMode: PIXEL_SCROLL_MODE,
})
);
is(
style.transform,
"translate(0px) scale(1.05)",
"The div has been slightly scaled."
);
is(
dragZoom.zoom,
PIXEL_DELTA * dragZoom.ZOOM_SPEED,
"The zoom was increased"
);
ok(
floatEquality(dragZoom.smoothZoom, 0.05),
"The smooth zoom is between the initial value and the target"
);
is(rafMock.timesCalled, 1, "A RAF has been queued");
}
info("RAF will eventually stop once the smooth values approach the target");
{
let i;
let lastCallCount;
for (i = 0; i < MAX_RAF_LOOP; i++) {
if (lastCallCount === rafMock.timesCalled) {
break;
}
lastCallCount = rafMock.timesCalled;
rafMock.nextFrame();
}
is(
style.transform,
"translate(0px) scale(1.1)",
"The scale has been fully applied"
);
is(
dragZoom.zoom,
dragZoom.smoothZoom,
"The smooth and target zoom values match"
);
isnot(MAX_RAF_LOOP, i, "The RAF loop correctly stopped");
}
info("Dragging correctly translates the div");
{
div.dispatchEvent(
new MouseEvent("mousemove", {
clientX: 10,
clientY: 10,
})
);
div.dispatchEvent(new MouseEvent("mousedown"));
div.dispatchEvent(
new MouseEvent("mousemove", {
clientX: 20,
clientY: 20,
})
);
div.dispatchEvent(new MouseEvent("mouseup"));
is(
style.transform,
"translate(2.5px, 5px) scale(1.1)",
"The style is correctly translated"
);
ok(
floatEquality(dragZoom.translateX, 5),
"Translate X moved by some pixel amount"
);
ok(
floatEquality(dragZoom.translateY, 10),
"Translate Y moved by some pixel amount"
);
}
info("Zooming centers around the mouse");
{
canvases.container.dispatchEvent(
new WheelEvent("wheel", {
deltaY: -PIXEL_DELTA,
deltaMode: PIXEL_SCROLL_MODE,
})
);
// Run through the RAF loop to zoom in towards that value.
let lastCallCount;
for (let i = 0; i < MAX_RAF_LOOP; i++) {
if (lastCallCount === rafMock.timesCalled) {
break;
}
lastCallCount = rafMock.timesCalled;
rafMock.nextFrame();
}
is(
style.transform,
"translate(8.18182px, 18.1818px) scale(1.2)",
"Zooming affects the translation to keep the mouse centered"
);
ok(
floatEquality(dragZoom.translateX, 8.181818181818185),
"Translate X was affected by the mouse position"
);
ok(
floatEquality(dragZoom.translateY, 18.18181818181817),
"Translate Y was affected by the mouse position"
);
is(dragZoom.zoom, 0.2, "Zooming starts at 0");
}
dragZoom.destroy();
info("Scroll isn't tracked after destruction");
{
const previousZoom = dragZoom.zoom;
const previousSmoothZoom = dragZoom.smoothZoom;
canvases.container.dispatchEvent(
new WheelEvent("wheel", {
deltaY: -PIXEL_DELTA,
deltaMode: PIXEL_SCROLL_MODE,
})
);
is(dragZoom.zoom, previousZoom, "The zoom stayed the same");
is(
dragZoom.smoothZoom,
previousSmoothZoom,
"The smooth zoom stayed the same"
);
}
info("Translation isn't tracked after destruction");
{
const initialX = dragZoom.translateX;
const initialY = dragZoom.translateY;
div.dispatchEvent(new MouseEvent("mousedown"));
div.dispatchEvent(new MouseEvent("mousemove"), {
clientX: 40,
clientY: 40,
});
div.dispatchEvent(new MouseEvent("mouseup"));
is(dragZoom.translateX, initialX, "The translationX didn't change");
is(dragZoom.translateY, initialY, "The translationY didn't change");
}
panelDoc.body.removeChild(div);
});
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