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gecko-dev
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Backout 175e66ebdb05 (bug 1077444) for dt2 orange

This commit is contained in:
Wes Kocher 2015-01-09 14:00:31 -08:00
Родитель be4d564b24
Коммит e28a549c00
8 изменённых файлов: 17 добавлений и 1099 удалений
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1
browser/devtools/shared/moz.build
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@ -22,7 +22,6 @@ EXTRA_JS_MODULES.devtools += [
'widgets/AbstractTreeItem.jsm',
'widgets/BreadcrumbsWidget.jsm',
'widgets/Chart.jsm',
'widgets/FlameGraph.jsm',
'widgets/Graphs.jsm',
'widgets/GraphsWorker.js',
'widgets/SideMenuWidget.jsm',

4
browser/devtools/shared/test/browser.ini
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@ -15,10 +15,6 @@ support-files =
[browser_cubic-bezier-01.js]
[browser_cubic-bezier-02.js]
[browser_cubic-bezier-03.js]
[browser_flame-graph-01.js]
[browser_flame-graph-02.js]
[browser_flame-graph-03.js]
[browser_flame-graph-04.js]
[browser_graphs-01.js]
[browser_graphs-02.js]
[browser_graphs-03.js]

60
browser/devtools/shared/test/browser_flame-graph-01.js
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@ -1,60 +0,0 @@
/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
// Tests that flame graph widget works properly.
let {FlameGraph} = Cu.import("resource:///modules/devtools/FlameGraph.jsm", {});
let {DOMHelpers} = Cu.import("resource:///modules/devtools/DOMHelpers.jsm", {});
let {Promise} = devtools.require("resource://gre/modules/Promise.jsm");
let {Hosts} = devtools.require("devtools/framework/toolbox-hosts");
let test = Task.async(function*() {
yield promiseTab("about:blank");
yield performTest();
gBrowser.removeCurrentTab();
finish();
});
function* performTest() {
let [host, win, doc] = yield createHost();
doc.body.setAttribute("style", "position: fixed; width: 100%; height: 100%; margin: 0;");
let graph = new FlameGraph(doc.body);
let readyEventEmitted;
graph.once("ready", () => readyEventEmitted = true);
yield graph.ready();
ok(readyEventEmitted, "The 'ready' event should have been emitted");
testGraph(host, graph);
graph.destroy();
host.destroy();
}
function testGraph(host, graph) {
ok(graph._container.classList.contains("flame-graph-widget-container"),
"The correct graph container was created.");
ok(graph._canvas.classList.contains("flame-graph-widget-canvas"),
"The correct graph container was created.");
let bounds = host.frame.getBoundingClientRect();
is(graph.width, bounds.width * window.devicePixelRatio,
"The graph has the correct width.");
is(graph.height, bounds.height * window.devicePixelRatio,
"The graph has the correct height.");
ok(graph._selection.start === null,
"The graph's selection start value is initially null.");
ok(graph._selection.end === null,
"The graph's selection end value is initially null.");
ok(graph._selectionDragger.origin === null,
"The graph's dragger origin value is initially null.");
ok(graph._selectionDragger.anchor.start === null,
"The graph's dragger anchor start value is initially null.");
ok(graph._selectionDragger.anchor.end === null,
"The graph's dragger anchor end value is initially null.");
}

45
browser/devtools/shared/test/browser_flame-graph-02.js
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@ -1,45 +0,0 @@
/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
// Tests that flame graph widgets may have a fixed width or height.
let {FlameGraph} = Cu.import("resource:///modules/devtools/FlameGraph.jsm", {});
let {DOMHelpers} = Cu.import("resource:///modules/devtools/DOMHelpers.jsm", {});
let {Promise} = devtools.require("resource://gre/modules/Promise.jsm");
let {Hosts} = devtools.require("devtools/framework/toolbox-hosts");
let test = Task.async(function*() {
yield promiseTab("about:blank");
yield performTest();
gBrowser.removeCurrentTab();
finish();
});
function* performTest() {
let [host, win, doc] = yield createHost();
doc.body.setAttribute("style", "position: fixed; width: 100%; height: 100%; margin: 0;");
let graph = new FlameGraph(doc.body);
graph.fixedWidth = 200;
graph.fixedHeight = 100;
yield graph.ready();
testGraph(host, graph);
graph.destroy();
host.destroy();
}
function testGraph(host, graph) {
let bounds = host.frame.getBoundingClientRect();
isnot(graph.width, bounds.width * window.devicePixelRatio,
"The graph should not span all the parent node's width.");
isnot(graph.height, bounds.height * window.devicePixelRatio,
"The graph should not span all the parent node's height.");
is(graph.width, graph.fixedWidth * window.devicePixelRatio,
"The graph has the correct width.");
is(graph.height, graph.fixedHeight * window.devicePixelRatio,
"The graph has the correct height.");
}

122
browser/devtools/shared/test/browser_flame-graph-03.js
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@ -1,122 +0,0 @@
/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
// Tests that selections in the flame graph widget work properly.
let TEST_DATA = [{ color: "#f00", blocks: [{ x: 0, y: 0, width: 50, height: 20, text: "FOO" }, { x: 50, y: 0, width: 100, height: 20, text: "BAR" }] }, { color: "#00f", blocks: [{ x: 0, y: 30, width: 30, height: 20, text: "BAZ" }] }];
let TEST_WIDTH = 200;
let TEST_HEIGHT = 100;
let {FlameGraph} = Cu.import("resource:///modules/devtools/FlameGraph.jsm", {});
let {DOMHelpers} = Cu.import("resource:///modules/devtools/DOMHelpers.jsm", {});
let {Promise} = devtools.require("resource://gre/modules/Promise.jsm");
let {Hosts} = devtools.require("devtools/framework/toolbox-hosts");
let test = Task.async(function*() {
yield promiseTab("about:blank");
yield performTest();
gBrowser.removeCurrentTab();
finish();
});
function* performTest() {
let [host, win, doc] = yield createHost();
doc.body.setAttribute("style", "position: fixed; width: 100%; height: 100%; margin: 0;");
let graph = new FlameGraph(doc.body, 1);
graph.fixedWidth = TEST_WIDTH;
graph.fixedHeight = TEST_HEIGHT;
yield graph.ready();
testGraph(graph);
graph.destroy();
host.destroy();
}
function testGraph(graph) {
graph.setData(TEST_DATA);
is(graph.getDataWindowStart(), 0,
"The selection start boundary is correct (1).");
is(graph.getDataWindowEnd(), TEST_WIDTH,
"The selection end boundary is correct (1).");
scroll(graph, 200, HORIZONTAL_AXIS, 10);
is(graph.getDataWindowStart() | 0, 100,
"The selection start boundary is correct (2).");
is(graph.getDataWindowEnd() | 0, 300,
"The selection end boundary is correct (2).");
scroll(graph, -200, HORIZONTAL_AXIS, 10);
is(graph.getDataWindowStart() | 0, 0,
"The selection start boundary is correct (3).");
is(graph.getDataWindowEnd() | 0, 200,
"The selection end boundary is correct (3).");
scroll(graph, 200, VERTICAL_AXIS, TEST_WIDTH / 2);
is(graph.getDataWindowStart() | 0, 0,
"The selection start boundary is correct (4).");
is(graph.getDataWindowEnd() | 0, 207,
"The selection end boundary is correct (4).");
scroll(graph, -200, VERTICAL_AXIS, TEST_WIDTH / 2);
is(graph.getDataWindowStart() | 0, 7,
"The selection start boundary is correct (5).");
is(graph.getDataWindowEnd() | 0, 199,
"The selection end boundary is correct (5).");
dragStart(graph, TEST_WIDTH / 2);
is(graph.getDataWindowStart() | 0, 7,
"The selection start boundary is correct (6).");
is(graph.getDataWindowEnd() | 0, 199,
"The selection end boundary is correct (6).");
hover(graph, TEST_WIDTH / 2 - 10);
is(graph.getDataWindowStart() | 0, 16,
"The selection start boundary is correct (7).");
is(graph.getDataWindowEnd() | 0, 209,
"The selection end boundary is correct (7).");
dragStop(graph, 10);
is(graph.getDataWindowStart() | 0, 93,
"The selection start boundary is correct (8).");
is(graph.getDataWindowEnd() | 0, 286,
"The selection end boundary is correct (8).");
}
// EventUtils just doesn't work!
function hover(graph, x, y = 1) {
x /= window.devicePixelRatio;
y /= window.devicePixelRatio;
graph._onMouseMove({ clientX: x, clientY: y });
}
function dragStart(graph, x, y = 1) {
x /= window.devicePixelRatio;
y /= window.devicePixelRatio;
graph._onMouseMove({ clientX: x, clientY: y });
graph._onMouseDown({ clientX: x, clientY: y });
}
function dragStop(graph, x, y = 1) {
x /= window.devicePixelRatio;
y /= window.devicePixelRatio;
graph._onMouseMove({ clientX: x, clientY: y });
graph._onMouseUp({ clientX: x, clientY: y });
}
let HORIZONTAL_AXIS = 1;
let VERTICAL_AXIS = 2;
function scroll(graph, wheel, axis, x, y = 1) {
x /= window.devicePixelRatio;
y /= window.devicePixelRatio;
graph._onMouseMove({ clientX: x, clientY: y });
graph._onMouseWheel({ clientX: x, clientY: y, axis, detail: wheel, axis,
HORIZONTAL_AXIS,
VERTICAL_AXIS
});
}

88
browser/devtools/shared/test/browser_flame-graph-04.js
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@ -1,88 +0,0 @@
/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
// Tests that text metrics in the flame graph widget work properly.
let HTML_NS = "http://www.w3.org/1999/xhtml";
let FLAME_GRAPH_BLOCK_TEXT_FONT_SIZE = 9; // px
let FLAME_GRAPH_BLOCK_TEXT_FONT_FAMILY = "sans-serif";
let {ViewHelpers} = Cu.import("resource:///modules/devtools/ViewHelpers.jsm", {});
let {FlameGraph} = Cu.import("resource:///modules/devtools/FlameGraph.jsm", {});
let {DOMHelpers} = Cu.import("resource:///modules/devtools/DOMHelpers.jsm", {});
let {Promise} = devtools.require("resource://gre/modules/Promise.jsm");
let {Hosts} = devtools.require("devtools/framework/toolbox-hosts");
let L10N = new ViewHelpers.L10N();
let test = Task.async(function*() {
yield promiseTab("about:blank");
yield performTest();
gBrowser.removeCurrentTab();
finish();
});
function* performTest() {
let [host, win, doc] = yield createHost();
let graph = new FlameGraph(doc.body, 1);
yield graph.ready();
testGraph(graph);
graph.destroy();
host.destroy();
}
function testGraph(graph) {
is(graph._averageCharWidth, getAverageCharWidth(),
"The average char width was calculated correctly.");
is(graph._overflowCharWidth, getCharWidth(L10N.ellipsis),
"The ellipsis char width was calculated correctly.");
is(graph._getTextWidthApprox("This text is maybe overflowing"),
getAverageCharWidth() * 30,
"The approximate width was calculated correctly.");
is(graph._getFittedText("This text is maybe overflowing", 1000),
"This text is maybe overflowing",
"The fitted text for 1000px width is correct.");
isnot(graph._getFittedText("This text is maybe overflowing", 100),
"This text is maybe overflowing",
"The fitted text for 100px width is correct (1).");
ok(graph._getFittedText("This text is maybe overflowing", 100)
.contains(L10N.ellipsis),
"The fitted text for 100px width is correct (2).");
is(graph._getFittedText("This text is maybe overflowing", 10),
L10N.ellipsis,
"The fitted text for 10px width is correct.");
is(graph._getFittedText("This text is maybe overflowing", 1),
"",
"The fitted text for 1px width is correct.");
}
function getAverageCharWidth() {
let letterWidthsSum = 0;
let start = 32; // space
let end = 123; // "z"
for (let i = start; i < end; i++) {
let char = String.fromCharCode(i);
letterWidthsSum += getCharWidth(char);
}
return letterWidthsSum / (end - start);
}
function getCharWidth(char) {
let canvas = document.createElementNS(HTML_NS, "canvas");
let ctx = canvas.getContext("2d");
let fontSize = FLAME_GRAPH_BLOCK_TEXT_FONT_SIZE;
let fontFamily = FLAME_GRAPH_BLOCK_TEXT_FONT_FAMILY;
ctx.font = fontSize + "px " + fontFamily;
return ctx.measureText(char).width;
}

755
browser/devtools/shared/widgets/FlameGraph.jsm
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@ -1,755 +0,0 @@
/* 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/. */
"use strict";
const Cu = Components.utils;
Cu.import("resource:///modules/devtools/ViewHelpers.jsm");
Cu.import("resource:///modules/devtools/Graphs.jsm");
const promise = Cu.import("resource://gre/modules/Promise.jsm", {}).Promise;
const {Task} = Cu.import("resource://gre/modules/Task.jsm", {});
const {EventEmitter} = Cu.import("resource://gre/modules/devtools/event-emitter.js", {});
this.EXPORTED_SYMBOLS = [
"FlameGraph",
"FlameGraphUtils"
];
const HTML_NS = "http://www.w3.org/1999/xhtml";
const GRAPH_SRC = "chrome://browser/content/devtools/graphs-frame.xhtml";
const L10N = new ViewHelpers.L10N();
const GRAPH_WHEEL_ZOOM_SENSITIVITY = 0.00035;
const GRAPH_WHEEL_SCROLL_SENSITIVITY = 0.5;
const GRAPH_MIN_SELECTION_WIDTH = 10; // ms
const TIMELINE_TICKS_MULTIPLE = 5; // ms
const TIMELINE_TICKS_SPACING_MIN = 75; // px
const OVERVIEW_HEADER_HEIGHT = 18; // px
const OVERVIEW_HEADER_SAFE_BOUNDS = 50; // px
const OVERVIEW_HEADER_TEXT_COLOR = "#18191a";
const OVERVIEW_HEADER_TEXT_FONT_SIZE = 9; // px
const OVERVIEW_HEADER_TEXT_FONT_FAMILY = "sans-serif";
const OVERVIEW_HEADER_TEXT_PADDING_LEFT = 6; // px
const OVERVIEW_HEADER_TEXT_PADDING_TOP = 5; // px
const OVERVIEW_TIMELINE_STROKES = "#ddd";
const FLAME_GRAPH_BLOCK_BORDER = 1; // px
const FLAME_GRAPH_BLOCK_TEXT_COLOR = "#000";
const FLAME_GRAPH_BLOCK_TEXT_FONT_SIZE = 9; // px
const FLAME_GRAPH_BLOCK_TEXT_FONT_FAMILY = "sans-serif";
const FLAME_GRAPH_BLOCK_TEXT_PADDING_TOP = 1; // px
const FLAME_GRAPH_BLOCK_TEXT_PADDING_LEFT = 3; // px
const FLAME_GRAPH_BLOCK_TEXT_PADDING_RIGHT = 3; // px
/**
* A flamegraph visualization. This implementation is responsable only with
* drawing the graph, using a data source consisting of rectangles and
* their corresponding widths.
*
* Example usage:
* let graph = new FlameGraph(node);
* let src = FlameGraphUtils.createFlameGraphDataFromSamples(samples);
* graph.once("ready", () => {
* graph.setData(src);
* });
*
* Data source format:
* [
* {
* color: "string",
* blocks: [
* {
* x: number,
* y: number,
* width: number,
* height: number,
* text: "string"
* },
* ...
* ]
* },
* {
* color: "string",
* blocks: [...]
* },
* ...
* {
* color: "string",
* blocks: [...]
* }
* ]
*
* Use `FlameGraphUtils` to convert profiler data (or any other data source)
* into a drawable format.
*
* @param nsIDOMNode parent
* The parent node holding the graph.
* @param number sharpness [optional]
* Defaults to the current device pixel ratio.
*/
function FlameGraph(parent, sharpness) {
EventEmitter.decorate(this);
this._parent = parent;
this._ready = promise.defer();
AbstractCanvasGraph.createIframe(GRAPH_SRC, parent, iframe => {
this._iframe = iframe;
this._window = iframe.contentWindow;
this._document = iframe.contentDocument;
this._pixelRatio = sharpness || this._window.devicePixelRatio;
let container = this._container = this._document.getElementById("graph-container");
container.className = "flame-graph-widget-container graph-widget-container";
let canvas = this._canvas = this._document.getElementById("graph-canvas");
canvas.className = "flame-graph-widget-canvas graph-widget-canvas";
let bounds = parent.getBoundingClientRect();
bounds.width = this.fixedWidth || bounds.width;
bounds.height = this.fixedHeight || bounds.height;
iframe.setAttribute("width", bounds.width);
iframe.setAttribute("height", bounds.height);
this._width = canvas.width = bounds.width * this._pixelRatio;
this._height = canvas.height = bounds.height * this._pixelRatio;
this._ctx = canvas.getContext("2d");
this._selection = new GraphSelection();
this._selectionDragger = new GraphSelectionDragger();
// Calculating text widths is necessary to trim the text inside the blocks
// while the scaling changes (e.g. via scrolling). This is very expensive,
// so maintain a cache of string contents to text widths.
this._textWidthsCache = {};
let fontSize = FLAME_GRAPH_BLOCK_TEXT_FONT_SIZE * this._pixelRatio;
let fontFamily = FLAME_GRAPH_BLOCK_TEXT_FONT_FAMILY;
this._ctx.font = fontSize + "px " + fontFamily;
this._averageCharWidth = this._calcAverageCharWidth();
this._overflowCharWidth = this._getTextWidth(this.overflowChar);
this._onMouseMove = this._onMouseMove.bind(this);
this._onMouseDown = this._onMouseDown.bind(this);
this._onMouseUp = this._onMouseUp.bind(this);
this._onMouseWheel = this._onMouseWheel.bind(this);
this._onAnimationFrame = this._onAnimationFrame.bind(this);
container.addEventListener("mousemove", this._onMouseMove);
container.addEventListener("mousedown", this._onMouseDown);
container.addEventListener("mouseup", this._onMouseUp);
container.addEventListener("MozMousePixelScroll", this._onMouseWheel);
this._animationId = this._window.requestAnimationFrame(this._onAnimationFrame);
this._ready.resolve(this);
this.emit("ready", this);
});
}
FlameGraph.prototype = {
/**
* Read-only width and height of the canvas.
* @return number
*/
get width() {
return this._width;
},
get height() {
return this._height;
},
/**
* Returns a promise resolved once this graph is ready to receive data.
*/
ready: function() {
return this._ready.promise;
},
/**
* Destroys this graph.
*/
destroy: function() {
let container = this._container;
container.removeEventListener("mousemove", this._onMouseMove);
container.removeEventListener("mousedown", this._onMouseDown);
container.removeEventListener("mouseup", this._onMouseUp);
container.removeEventListener("MozMousePixelScroll", this._onMouseWheel);
this._window.cancelAnimationFrame(this._animationId);
this._iframe.remove();
this._selection = null;
this._selectionDragger = null;
this._data = null;
this.emit("destroyed");
},
/**
* Rendering options. Subclasses should override these.
*/
overviewHeaderTextColor: OVERVIEW_HEADER_TEXT_COLOR,
overviewTimelineStrokes: OVERVIEW_TIMELINE_STROKES,
blockTextColor: FLAME_GRAPH_BLOCK_TEXT_COLOR,
/**
* Makes sure the canvas graph is of the specified width or height, and
* doesn't flex to fit all the available space.
*/
fixedWidth: null,
fixedHeight: null,
/**
* The units used in the overhead ticks. Could be "ms", for example.
* Overwrite this with your own localized format.
*/
timelineTickUnits: "",
/**
* Character used when a block's text is overflowing.
* Defaults to an ellipsis.
*/
overflowChar: L10N.ellipsis,
/**
* Sets the data source for this graph.
*
* @param object data
* The data source. See the constructor for more information.
*/
setData: function(data) {
this._data = data;
this._selection = { start: 0, end: this._width };
this._shouldRedraw = true;
},
/**
* Same as `setData`, but waits for this graph to finish initializing first.
*
* @param object data
* The data source. See the constructor for more information.
* @return promise
* A promise resolved once the data is set.
*/
setDataWhenReady: Task.async(function*(data) {
yield this.ready();
this.setData(data);
}),
/**
* Gets the start or end of this graph's selection, i.e. the 'data window'.
* @return number
*/
getDataWindowStart: function() {
return this._selection.start;
},
getDataWindowEnd: function() {
return this._selection.end;
},
/**
* The contents of this graph are redrawn only when something changed,
* like the data source, or the selection bounds etc. This flag tracks
* if the rendering is "dirty" and needs to be refreshed.
*/
_shouldRedraw: false,
/**
* Animation frame callback, invoked on each tick of the refresh driver.
*/
_onAnimationFrame: function() {
this._animationId = this._window.requestAnimationFrame(this._onAnimationFrame);
this._drawWidget();
},
/**
* Redraws the widget when necessary. The actual graph is not refreshed
* every time this function is called, only the cliphead, selection etc.
*/
_drawWidget: function() {
if (!this._shouldRedraw) {
return;
}
let ctx = this._ctx;
let canvasWidth = this._width;
let canvasHeight = this._height;
ctx.clearRect(0, 0, canvasWidth, canvasHeight);
let selection = this._selection;
let selectionWidth = selection.end - selection.start;
let selectionScale = canvasWidth / selectionWidth;
this._drawTicks(selection.start, selectionScale);
this._drawPyramid(this._data, selection.start, selectionScale);
this._shouldRedraw = false;
},
/**
* Draws the overhead ticks in this graph.
*
* @param number dataOffset, dataScale
* Offsets and scales the data source by the specified amount.
* This is used for scrolling the visualization.
*/
_drawTicks: function(dataOffset, dataScale) {
let ctx = this._ctx;
let canvasWidth = this._width;
let canvasHeight = this._height;
let scaledOffset = dataOffset * dataScale;
let safeBounds = OVERVIEW_HEADER_SAFE_BOUNDS * this._pixelRatio;
let availableWidth = canvasWidth - safeBounds;
let fontSize = OVERVIEW_HEADER_TEXT_FONT_SIZE * this._pixelRatio;
let fontFamily = OVERVIEW_HEADER_TEXT_FONT_FAMILY;
let textPaddingLeft = OVERVIEW_HEADER_TEXT_PADDING_LEFT * this._pixelRatio;
let textPaddingTop = OVERVIEW_HEADER_TEXT_PADDING_TOP * this._pixelRatio;
let tickInterval = this._findOptimalTickInterval(dataScale);
ctx.textBaseline = "top";
ctx.font = fontSize + "px " + fontFamily;
ctx.fillStyle = this.overviewHeaderTextColor;
ctx.strokeStyle = this.overviewTimelineStrokes;
ctx.beginPath();
for (let x = 0; x < availableWidth + scaledOffset; x += tickInterval) {
let lineLeft = x - scaledOffset;
let textLeft = lineLeft + textPaddingLeft;
let time = Math.round(x / dataScale / this._pixelRatio);
let label = time + " " + this.timelineTickUnits;
ctx.fillText(label, textLeft, textPaddingTop);
ctx.moveTo(lineLeft, 0);
ctx.lineTo(lineLeft, canvasHeight);
}
ctx.stroke();
},
/**
* Draws the blocks and text in this graph.
*
* @param object dataSource
* The data source. See the constructor for more information.
* @param number dataOffset, dataScale
* Offsets and scales the data source by the specified amount.
* This is used for scrolling the visualization.
*/
_drawPyramid: function(dataSource, dataOffset, dataScale) {
let ctx = this._ctx;
let fontSize = FLAME_GRAPH_BLOCK_TEXT_FONT_SIZE * this._pixelRatio;
let fontFamily = FLAME_GRAPH_BLOCK_TEXT_FONT_FAMILY;
let visibleBlocks = this._drawPyramidFill(dataSource, dataOffset, dataScale);
ctx.textBaseline = "middle";
ctx.font = fontSize + "px " + fontFamily;
ctx.fillStyle = this.blockTextColor;
this._drawPyramidText(visibleBlocks, dataOffset, dataScale);
},
/**
* Fills all block inside this graph's pyramid.
* @see FlameGraph.prototype._drawPyramid
*/
_drawPyramidFill: function(dataSource, dataOffset, dataScale) {
let visibleBlocksStore = [];
let minVisibleBlockWidth = this._overflowCharWidth;
for (let { color, blocks } of dataSource) {
this._drawBlocksFill(
color, blocks, dataOffset, dataScale,
visibleBlocksStore, minVisibleBlockWidth);
}
return visibleBlocksStore;
},
/**
* Adds the text for all block inside this graph's pyramid.
* @see FlameGraph.prototype._drawPyramid
*/
_drawPyramidText: function(blocks, dataOffset, dataScale) {
for (let block of blocks) {
this._drawBlockText(block, dataOffset, dataScale);
}
},
/**
* Fills a group of blocks sharing the same style.
*
* @param string color
* The color used as the block's background.
* @param array blocks
* A list of { x, y, width, height } objects visually representing
* all the blocks sharing this particular style.
* @param number dataOffset, dataScale
* Offsets and scales the data source by the specified amount.
* This is used for scrolling the visualization.
* @param array visibleBlocksStore
* An array to store all the visible blocks into, after drawing them.
* The provided array will be populated.
* @param number minVisibleBlockWidth
* The minimum width of the blocks that will be added into
* the `visibleBlocksStore`.
*/
_drawBlocksFill: function(
color, blocks, dataOffset, dataScale,
visibleBlocksStore, minVisibleBlockWidth)
{
let ctx = this._ctx;
let canvasWidth = this._width;
let canvasHeight = this._height;
let scaledOffset = dataOffset * dataScale;
ctx.fillStyle = color;
ctx.beginPath();
for (let block of blocks) {
let { x, y, width, height } = block;
let rectLeft = x * this._pixelRatio * dataScale - scaledOffset;
let rectTop = (y + OVERVIEW_HEADER_HEIGHT) * this._pixelRatio;
let rectWidth = width * this._pixelRatio * dataScale;
let rectHeight = height * this._pixelRatio;
if (rectLeft > canvasWidth || // Too far right.
rectLeft < -rectWidth || // Too far left.
rectTop > canvasHeight) { // Too far bottom.
continue;
}
// Clamp the blocks position to start at 0. Avoid negative X coords,
// to properly place the text inside the blocks.
if (rectLeft < 0) {
rectWidth += rectLeft;
rectLeft = 0;
}
// Avoid drawing blocks that are too narrow.
if (rectWidth <= FLAME_GRAPH_BLOCK_BORDER ||
rectHeight <= FLAME_GRAPH_BLOCK_BORDER) {
continue;
}
ctx.rect(
rectLeft, rectTop,
rectWidth - FLAME_GRAPH_BLOCK_BORDER,
rectHeight - FLAME_GRAPH_BLOCK_BORDER);
// Populate the visible blocks store with this block if the width
// is longer than a given threshold.
if (rectWidth > minVisibleBlockWidth) {
visibleBlocksStore.push(block);
}
}
ctx.fill();
},
/**
* Adds text for a single block.
*
* @param object block
* A single { x, y, width, height, text } object visually representing
* the block containing the text.
* @param number dataOffset, dataScale
* Offsets and scales the data source by the specified amount.
* This is used for scrolling the visualization.
*/
_drawBlockText: function(block, dataOffset, dataScale) {
let ctx = this._ctx;
let scaledOffset = dataOffset * dataScale;
let { x, y, width, height, text } = block;
let paddingTop = FLAME_GRAPH_BLOCK_TEXT_PADDING_TOP * this._pixelRatio;
let paddingLeft = FLAME_GRAPH_BLOCK_TEXT_PADDING_LEFT * this._pixelRatio;
let paddingRight = FLAME_GRAPH_BLOCK_TEXT_PADDING_RIGHT * this._pixelRatio;
let totalHorizontalPadding = paddingLeft + paddingRight;
let rectLeft = x * this._pixelRatio * dataScale - scaledOffset;
let rectWidth = width * this._pixelRatio * dataScale;
// Clamp the blocks position to start at 0. Avoid negative X coords,
// to properly place the text inside the blocks.
if (rectLeft < 0) {
rectWidth += rectLeft;
rectLeft = 0;
}
let textLeft = rectLeft + paddingLeft;
let textTop = (y + height / 2 + OVERVIEW_HEADER_HEIGHT) * this._pixelRatio + paddingTop;
let textAvailableWidth = rectWidth - totalHorizontalPadding;
// Massage the text to fit inside a given width. This clamps the string
// at the end to avoid overflowing.
let fittedText = this._getFittedText(text, textAvailableWidth);
if (fittedText.length < 1) {
return;
}
ctx.fillText(fittedText, textLeft, textTop);
},
/**
* Calculating text widths is necessary to trim the text inside the blocks
* while the scaling changes (e.g. via scrolling). This is very expensive,
* so maintain a cache of string contents to text widths.
*/
_textWidthsCache: null,
_overflowCharWidth: null,
_averageCharWidth: null,
/**
* Gets the width of the specified text, for the current context state
* (font size, family etc.).
*
* @param string text
* The text to analyze.
* @return number
* The text width.
*/
_getTextWidth: function(text) {
let cachedWidth = this._textWidthsCache[text];
if (cachedWidth) {
return cachedWidth;
}
let metrics = this._ctx.measureText(text);
return (this._textWidthsCache[text] = metrics.width);
},
/**
* Gets an approximate width of the specified text. This is much faster
* than `_getTextWidth`, but inexact.
*
* @param string text
* The text to analyze.
* @return number
* The approximate text width.
*/
_getTextWidthApprox: function(text) {
return text.length * this._averageCharWidth;
},
/**
* Gets the average letter width in the English alphabet, for the current
* context state (font size, family etc.). This provides a close enough
* value to use in `_getTextWidthApprox`.
*
* @return number
* The average letter width.
*/
_calcAverageCharWidth: function() {
let letterWidthsSum = 0;
let start = 32; // space
let end = 123; // "z"
for (let i = start; i < end; i++) {
let char = String.fromCharCode(i);
letterWidthsSum += this._getTextWidth(char);
}
return letterWidthsSum / (end - start);
},
/**
* Massage a text to fit inside a given width. This clamps the string
* at the end to avoid overflowing.
*
* @param string text
* The text to fit inside the given width.
* @param number maxWidth
* The available width for the given text.
* @return string
* The fitted text.
*/
_getFittedText: function(text, maxWidth) {
let textWidth = this._getTextWidth(text);
if (textWidth < maxWidth) {
return text;
}
if (this._overflowCharWidth > maxWidth) {
return "";
}
for (let i = 1, len = text.length; i <= len; i++) {
let trimmedText = text.substring(0, len - i);
let trimmedWidth = this._getTextWidthApprox(trimmedText) + this._overflowCharWidth;
if (trimmedWidth < maxWidth) {
return trimmedText + this.overflowChar;
}
}
return "";
},
/**
* Listener for the "mousemove" event on the graph's container.
*/
_onMouseMove: function(e) {
let offset = this._getContainerOffset();
let mouseX = (e.clientX - offset.left) * this._pixelRatio;
let canvasWidth = this._width;
let canvasHeight = this._height;
let selection = this._selection;
let selectionWidth = selection.end - selection.start;
let selectionScale = canvasWidth / selectionWidth;
let dragger = this._selectionDragger;
if (dragger.origin != null) {
selection.start = dragger.anchor.start + (dragger.origin - mouseX) / selectionScale;
selection.end = dragger.anchor.end + (dragger.origin - mouseX) / selectionScale;
this._normalizeSelectionBounds();
this._shouldRedraw = true;
}
},
/**
* Listener for the "mousedown" event on the graph's container.
*/
_onMouseDown: function(e) {
let offset = this._getContainerOffset();
let mouseX = (e.clientX - offset.left) * this._pixelRatio;
this._selectionDragger.origin = mouseX;
this._selectionDragger.anchor.start = this._selection.start;
this._selectionDragger.anchor.end = this._selection.end;
this._canvas.setAttribute("input", "adjusting-selection-boundary");
},
/**
* Listener for the "mouseup" event on the graph's container.
*/
_onMouseUp: function() {
this._selectionDragger.origin = null;
this._canvas.removeAttribute("input");
},
/**
* Listener for the "wheel" event on the graph's container.
*/
_onMouseWheel: function(e) {
let offset = this._getContainerOffset();
let mouseX = (e.clientX - offset.left) * this._pixelRatio;
let canvasWidth = this._width;
let canvasHeight = this._height;
let selection = this._selection;
let selectionWidth = selection.end - selection.start;
let selectionScale = canvasWidth / selectionWidth;
switch (e.axis) {
case e.VERTICAL_AXIS: {
let distFromStart = mouseX;
let distFromEnd = canvasWidth - mouseX;
let vector = e.detail * GRAPH_WHEEL_ZOOM_SENSITIVITY / selectionScale;
selection.start -= distFromStart * vector;
selection.end += distFromEnd * vector;
break;
}
case e.HORIZONTAL_AXIS: {
let vector = e.detail * GRAPH_WHEEL_SCROLL_SENSITIVITY / selectionScale;
selection.start += vector;
selection.end += vector;
break;
}
}
this._normalizeSelectionBounds();
this._shouldRedraw = true;
},
/**
* Makes sure the start and end points of the current selection
* are withing the graph's visible bounds, and that they form a selection
* wider than the allowed minimum width.
*/
_normalizeSelectionBounds: function() {
let canvasWidth = this._width * 2;
let canvasHeight = this._height;
let { start, end } = this._selection;
let minSelectionWidth = GRAPH_MIN_SELECTION_WIDTH * this._pixelRatio;
if (start < 0) {
start = 0;
}
if (end < 0) {
start = 0;
end = minSelectionWidth;
}
if (end > canvasWidth) {
end = canvasWidth;
}
if (start > canvasWidth) {
end = canvasWidth;
start = canvasWidth - minSelectionWidth;
}
if (end - start < minSelectionWidth) {
let midPoint = (start + end) / 2;
start = midPoint - minSelectionWidth / 2;
end = midPoint + minSelectionWidth / 2;
}
this._selection.start = start;
this._selection.end = end;
},
/**
*
* Finds the optimal tick interval between time markers in this graph.
*
* @param number dataScale
* @return number
*/
_findOptimalTickInterval: function(dataScale) {
let timingStep = TIMELINE_TICKS_MULTIPLE;
let spacingMin = TIMELINE_TICKS_SPACING_MIN * this._pixelRatio;
if (dataScale > spacingMin) {
return dataScale;
}
while (true) {
let scaledStep = dataScale * timingStep;
if (scaledStep < spacingMin) {
timingStep <<= 1;
continue;
}
return scaledStep;
}
},
/**
* Gets the offset of this graph's container relative to the owner window.
*
* @return object
* The { left, top } offset.
*/
_getContainerOffset: function() {
let node = this._canvas;
let x = 0;
let y = 0;
while ((node = node.offsetParent)) {
x += node.offsetLeft;
y += node.offsetTop;
}
return { left: x, top: y };
}
};
/**
* A collection of utility functions converting various data sources
* into a format drawable by the FlameGraph.
*/
let FlameGraphUtils = {
// TODO bug 1077459
};

41
browser/devtools/shared/widgets/Graphs.jsm
Просмотреть файл

@ -7,14 +7,10 @@ const Cu = Components.utils;
Cu.import("resource:///modules/devtools/ViewHelpers.jsm");
const promise = Cu.import("resource://gre/modules/Promise.jsm", {}).Promise;
const {Task} = Cu.import("resource://gre/modules/Task.jsm", {});
const {EventEmitter} = Cu.import("resource://gre/modules/devtools/event-emitter.js", {});
const {Task} = Cu.import("resource://gre/modules/Task.jsm", {});
this.EXPORTED_SYMBOLS = [
"GraphCursor",
"GraphSelection",
"GraphSelectionDragger",
"GraphSelectionResizer",
"AbstractCanvasGraph",
"LineGraphWidget",
"BarGraphWidget",
@ -97,23 +93,28 @@ const BAR_GRAPH_LEGEND_MOUSEOVER_DEBOUNCE = 50; // ms
/**
* Small data primitives for all graphs.
*/
this.GraphCursor = function() {
this.x = null;
this.y = null;
this.GraphCursor = function() {};
this.GraphSelection = function() {};
this.GraphSelectionDragger = function() {};
this.GraphSelectionResizer = function() {};
GraphCursor.prototype = {
x: null,
y: null
};
this.GraphSelection = function() {
this.start = null;
this.end = null;
GraphSelection.prototype = {
start: null,
end: null
};
this.GraphSelectionDragger = function() {
this.origin = null;
this.anchor = new GraphSelection();
GraphSelectionDragger.prototype = {
origin: null,
anchor: new GraphSelection()
};
this.GraphSelectionResizer = function() {
this.margin = null;
GraphSelectionResizer.prototype = {
margin: null
};
/**
@ -244,11 +245,6 @@ AbstractCanvasGraph.prototype = {
this._window.cancelAnimationFrame(this._animationId);
this._iframe.remove();
this._cursor = null;
this._selection = null;
this._selectionDragger = null;
this._selectionResizer = null;
this._data = null;
this._mask = null;
this._maskArgs = null;
@ -896,9 +892,6 @@ AbstractCanvasGraph.prototype = {
/**
* Gets the offset of this graph's container relative to the owner window.
*
* @return object
* The { left, top } offset.
*/
_getContainerOffset: function() {
let node = this._canvas;