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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("devtools/client/memory/components/tree-map/canvas-utils");
const DragZoom = require("devtools/client/memory/components/tree-map/drag-zoom");
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, function* ({ tab, 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
});
let rafMock = createRAFMock();
panelDoc.body.appendChild(div);
let canvases = new CanvasUtils(div, 0);
let dragZoom = new DragZoom(canvases.container, 0, rafMock.raf);
let 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, 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, 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, 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");
{
let initialX = dragZoom.translateX;
let initialY = dragZoom.translateY;
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");
{
let previousZoom = dragZoom.zoom;
let 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");
{
let initialX = dragZoom.translateX;
let 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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