TimelineOverviewPane.js [plain text]
WebInspector.TimelineOverviewPane = function(model)
{
WebInspector.View.call(this);
this.element.id = "timeline-overview-panel";
this._windowStartTime = 0;
this._windowEndTime = Infinity;
this._eventDividers = [];
this._model = model;
this._topPaneSidebarElement = document.createElement("div");
this._topPaneSidebarElement.id = "timeline-overview-sidebar";
if (WebInspector.experimentsSettings.timelineVerticalOverview.isEnabled()) {
this._overviewModeSelector = new WebInspector.TimelineOverviewModeSelector(this._onOverviewModeChanged.bind(this));
this._overviewModeSelector.addButton(WebInspector.UIString("Show each event category as a horizontal strip in overview"),
"timeline-mode-horizontal-bars", WebInspector.TimelineOverviewPane.Mode.EventsHorizontal);
this._overviewModeSelector.addButton(WebInspector.UIString("Show each event as a vertical bar in overview"),
"timeline-mode-vertical-bars", WebInspector.TimelineOverviewPane.Mode.EventsVertical);
}
var overviewTreeElement = document.createElement("ol");
overviewTreeElement.className = "sidebar-tree";
this._topPaneSidebarElement.appendChild(overviewTreeElement);
this.element.appendChild(this._topPaneSidebarElement);
var topPaneSidebarTree = new TreeOutline(overviewTreeElement);
this._timelinesOverviewItem = new WebInspector.SidebarTreeElement("resources-time-graph-sidebar-item", WebInspector.UIString("Timelines"));
if (this._overviewModeSelector)
this._timelinesOverviewItem.statusElement = this._overviewModeSelector.element;
topPaneSidebarTree.appendChild(this._timelinesOverviewItem);
this._timelinesOverviewItem.revealAndSelect(false);
this._timelinesOverviewItem.onselect = this._showTimelines.bind(this);
this._memoryOverviewItem = new WebInspector.SidebarTreeElement("resources-size-graph-sidebar-item", WebInspector.UIString("Memory"));
topPaneSidebarTree.appendChild(this._memoryOverviewItem);
this._memoryOverviewItem.onselect = this._showMemoryGraph.bind(this);
this._currentMode = WebInspector.TimelineOverviewPane.Mode.EventsHorizontal;
this._overviewContainer = this.element.createChild("div", "fill");
this._overviewContainer.id = "timeline-overview-container";
this._overviewGrid = new WebInspector.TimelineGrid();
this._overviewGrid.element.id = "timeline-overview-grid";
this._overviewGrid.itemsGraphsElement.id = "timeline-overview-timelines";
this._overviewContainer.appendChild(this._overviewGrid.element);
this._heapGraph = new WebInspector.HeapGraph(this._model);
this._heapGraph.element.id = "timeline-overview-memory";
this._overviewGrid.element.insertBefore(this._heapGraph.element, this._overviewGrid.itemsGraphsElement);
this._overviewWindow = new WebInspector.TimelineOverviewWindow(this._overviewContainer);
this._overviewWindow.addEventListener(WebInspector.TimelineOverviewWindow.Events.WindowChanged, this._onWindowChanged, this);
this._overviewContainer.appendChild(this._overviewGrid.element);
var separatorElement = document.createElement("div");
separatorElement.id = "timeline-overview-separator";
this.element.appendChild(separatorElement);
this._categoryGraphs = {};
var i = 0;
var categories = WebInspector.TimelinePresentationModel.categories();
for (var category in categories) {
var categoryGraph = new WebInspector.TimelineCategoryGraph(categories[category], i++ % 2);
this._categoryGraphs[category] = categoryGraph;
this._overviewGrid.itemsGraphsElement.appendChild(categoryGraph.graphElement);
categories[category].addEventListener(WebInspector.TimelineCategory.Events.VisibilityChanged, this._onCategoryVisibilityChanged, this);
}
this._overviewGrid.setScrollAndDividerTop(0, 0);
this._overviewCalculator = new WebInspector.TimelineOverviewCalculator();
model.addEventListener(WebInspector.TimelineModel.Events.RecordAdded, this._onRecordAdded, this);
model.addEventListener(WebInspector.TimelineModel.Events.RecordsCleared, this._reset, this);
}
WebInspector.TimelineOverviewPane.MinSelectableSize = 12;
WebInspector.TimelineOverviewPane.WindowScrollSpeedFactor = .3;
WebInspector.TimelineOverviewPane.ResizerOffset = 3.5;
WebInspector.TimelineOverviewPane.Mode = {
EventsVertical: "EventsVertical",
EventsHorizontal: "EventsHorizontal",
Memory: "Memory"
};
WebInspector.TimelineOverviewPane.Events = {
ModeChanged: "ModeChanged",
WindowChanged: "WindowChanged"
};
WebInspector.TimelineOverviewPane.prototype = {
wasShown: function()
{
this._update();
},
_showTimelines: function()
{
var newMode = this._overviewModeSelector ? this._overviewModeSelector.value : WebInspector.TimelineOverviewPane.Mode.EventsHorizontal;
if (this._currentMode === newMode)
return;
this._currentMode = newMode;
this._timelinesOverviewItem.revealAndSelect(false);
this._heapGraph.hide();
this._setVerticalOverview(this._currentMode === WebInspector.TimelineOverviewPane.Mode.EventsVertical);
this._overviewGrid.itemsGraphsElement.removeStyleClass("hidden");
this.dispatchEventToListeners(WebInspector.TimelineOverviewPane.Events.ModeChanged, this._currentMode);
},
_showMemoryGraph: function()
{
this._currentMode = WebInspector.TimelineOverviewPane.Mode.Memory;
this._setVerticalOverview(false);
this._memoryOverviewItem.revealAndSelect(false);
this._heapGraph.show();
this._heapGraph.update();
this._overviewGrid.itemsGraphsElement.addStyleClass("hidden");
this.dispatchEventToListeners(WebInspector.TimelineOverviewPane.Events.ModeChanged, this._currentMode);
},
_setVerticalOverview: function(enabled)
{
if (!enabled === !this._verticalOverview)
return;
if (enabled) {
this._verticalOverview = new WebInspector.TimelineVerticalOverview(this._model);
this._verticalOverview.show(this._overviewContainer);
} else {
this._verticalOverview.detach();
this._verticalOverview = null;
this._overviewGrid.itemsGraphsElement.removeStyleClass("hidden");
this._updateCategoryStrips();
}
},
_onOverviewModeChanged: function()
{
if (this._currentMode === WebInspector.TimelineOverviewPane.Mode.Memory)
return;
this._showTimelines();
},
_onCategoryVisibilityChanged: function(event)
{
var category = event.data;
this._categoryGraphs[category.name].dimmed = category.hidden;
this._update();
},
_update: function()
{
delete this._refreshTimeout;
this._overviewCalculator.setWindow(this._model.minimumRecordTime(), this._model.maximumRecordTime());
this._overviewCalculator.setDisplayWindow(0, this._overviewContainer.clientWidth);
if (this._heapGraph.visible)
this._heapGraph.update();
else if (this._verticalOverview)
this._verticalOverview.update();
else
this._updateCategoryStrips();
this._overviewGrid.updateDividers(this._overviewCalculator);
this._updateEventDividers();
},
_updateCategoryStrips: function()
{
var timelines = {};
var categories = WebInspector.TimelinePresentationModel.categories();
for (var category in categories) {
timelines[category] = [];
this._categoryGraphs[category].clearChunks();
}
function markPercentagesForRecord(record)
{
var isLong = WebInspector.TimelineModel.durationInSeconds(record) > WebInspector.TimelinePresentationModel.shortRecordThreshold;
if (!(this._showShortEvents || isLong))
return;
var percentages = this._overviewCalculator.computeBarGraphPercentages(record);
var end = Math.round(percentages.end);
var categoryName = WebInspector.TimelinePresentationModel.categoryForRecord(record).name;
for (var j = Math.round(percentages.start); j <= end; ++j)
timelines[categoryName][j] = true;
}
var records = this._model.records;
WebInspector.TimelinePresentationModel.forAllRecords(records, markPercentagesForRecord.bind(this));
for (var category in categories) {
var timeline = timelines[category];
window.timelineSaved = timeline;
var chunkStart = -1;
for (var j = 0; j < 101; ++j) {
if (timeline[j]) {
if (chunkStart === -1)
chunkStart = j;
} else {
if (chunkStart !== -1) {
this._categoryGraphs[category].addChunk(chunkStart, j);
chunkStart = -1;
}
}
}
if (chunkStart !== -1) {
this._categoryGraphs[category].addChunk(chunkStart, 100);
chunkStart = -1;
}
}
},
_updateEventDividers: function()
{
var records = this._eventDividers;
this._overviewGrid.removeEventDividers();
var dividers = [];
for (var i = 0; i < records.length; ++i) {
var record = records[i];
var positions = this._overviewCalculator.computeBarGraphPercentages(record);
var dividerPosition = Math.round(positions.start * 10);
if (dividers[dividerPosition])
continue;
var divider = WebInspector.TimelinePresentationModel.createEventDivider(record.type);
divider.style.left = positions.start + "%";
dividers[dividerPosition] = divider;
}
this._overviewGrid.addEventDividers(dividers);
},
sidebarResized: function(width)
{
this._overviewContainer.style.left = width + "px";
this._topPaneSidebarElement.style.width = width + "px";
},
addFrame: function(frame)
{
this._verticalOverview.addFrame(frame);
this._scheduleRefresh();
},
zoomToFrame: function(frame)
{
var window = this._verticalOverview.framePosition(frame);
if (!window)
return;
this._overviewWindow._setWindowPosition(window.start, window.end);
},
_onRecordAdded: function(event)
{
var record = event.data;
var eventDividers = this._eventDividers;
function addEventDividers(record)
{
if (WebInspector.TimelinePresentationModel.isEventDivider(record))
eventDividers.push(record);
}
WebInspector.TimelinePresentationModel.forAllRecords([record], addEventDividers);
this._scheduleRefresh();
},
_reset: function()
{
this._windowStartTime = 0;
this._windowEndTime = Infinity;
this._overviewWindow.reset();
this._overviewCalculator.reset();
this._eventDividers = [];
this._overviewGrid.updateDividers(this._overviewCalculator);
if (this._verticalOverview)
this._verticalOverview.reset();
this._update();
},
accept: function(record)
{
return record.endTime >= this._windowStartTime && record.startTime <= this._windowEndTime;
},
windowStartTime: function()
{
return this._windowStartTime || this._model.minimumRecordTime();
},
windowEndTime: function()
{
return this._windowEndTime < Infinity ? this._windowEndTime : this._model.maximumRecordTime();
},
windowLeft: function()
{
return this._overviewWindow.windowLeft;
},
windowRight: function()
{
return this._overviewWindow.windowRight;
},
_onWindowChanged: function()
{
if (this._verticalOverview) {
var times = this._verticalOverview.getWindowTimes(this.windowLeft(), this.windowRight());
this._windowStartTime = times.startTime;
this._windowEndTime = times.endTime;
} else {
var absoluteMin = this._model.minimumRecordTime();
var absoluteMax = this._model.maximumRecordTime();
this._windowStartTime = absoluteMin + (absoluteMax - absoluteMin) * this.windowLeft();
this._windowEndTime = absoluteMin + (absoluteMax - absoluteMin) * this.windowRight();
}
this.dispatchEventToListeners(WebInspector.TimelineOverviewPane.Events.WindowChanged);
},
setShowShortEvents: function(value)
{
this._showShortEvents = value;
this._update();
},
_scheduleRefresh: function()
{
if (this._refreshTimeout)
return;
if (!this.isShowing())
return;
this._refreshTimeout = setTimeout(this._update.bind(this), 100);
}
}
WebInspector.TimelineOverviewPane.prototype.__proto__ = WebInspector.View.prototype;
WebInspector.TimelineOverviewWindow = function(parentElement)
{
this._parentElement = parentElement;
this.windowLeft = 0.0;
this.windowRight = 1.0;
this._parentElement.addEventListener("mousedown", this._dragWindow.bind(this), true);
this._parentElement.addEventListener("mousewheel", this._onMouseWheel.bind(this), true);
this._parentElement.addEventListener("dblclick", this._resizeWindowMaximum.bind(this), true);
this._overviewWindowElement = document.createElement("div");
this._overviewWindowElement.className = "timeline-overview-window";
parentElement.appendChild(this._overviewWindowElement);
this._overviewWindowBordersElement = document.createElement("div");
this._overviewWindowBordersElement.className = "timeline-overview-window-rulers";
parentElement.appendChild(this._overviewWindowBordersElement);
var overviewDividersBackground = document.createElement("div");
overviewDividersBackground.className = "timeline-overview-dividers-background";
parentElement.appendChild(overviewDividersBackground);
this._leftResizeElement = document.createElement("div");
this._leftResizeElement.className = "timeline-window-resizer";
this._leftResizeElement.style.left = 0;
parentElement.appendChild(this._leftResizeElement);
this._rightResizeElement = document.createElement("div");
this._rightResizeElement.className = "timeline-window-resizer timeline-window-resizer-right";
this._rightResizeElement.style.right = 0;
parentElement.appendChild(this._rightResizeElement);
}
WebInspector.TimelineOverviewWindow.Events = {
WindowChanged: "WindowChanged"
}
WebInspector.TimelineOverviewWindow.prototype = {
reset: function()
{
this.windowLeft = 0.0;
this.windowRight = 1.0;
this._overviewWindowElement.style.left = "0%";
this._overviewWindowElement.style.width = "100%";
this._overviewWindowBordersElement.style.left = "0%";
this._overviewWindowBordersElement.style.right = "0%";
this._leftResizeElement.style.left = "0%";
this._rightResizeElement.style.left = "100%";
},
_resizeWindow: function(resizeElement, event)
{
WebInspector.elementDragStart(resizeElement, this._windowResizeDragging.bind(this, resizeElement), this._endWindowDragging.bind(this), event, "ew-resize");
},
_windowResizeDragging: function(resizeElement, event)
{
if (resizeElement === this._leftResizeElement)
this._resizeWindowLeft(event.pageX - this._parentElement.offsetLeft);
else
this._resizeWindowRight(event.pageX - this._parentElement.offsetLeft);
event.preventDefault();
},
_dragWindow: function(event)
{
if (event.button)
return;
var node = event.target;
while (node) {
if (node.hasStyleClass("resources-dividers-label-bar")) {
WebInspector.elementDragStart(this._overviewWindowElement, this._windowDragging.bind(this, event.pageX,
this._leftResizeElement.offsetLeft + WebInspector.TimelineOverviewPane.ResizerOffset, this._rightResizeElement.offsetLeft + WebInspector.TimelineOverviewPane.ResizerOffset), this._endWindowDragging.bind(this), event, "ew-resize");
break;
} else if (node === this._parentElement) {
var position = event.pageX - this._parentElement.offsetLeft;
this._overviewWindowSelector = new WebInspector.TimelineOverviewPane.WindowSelector(this._parentElement, position);
WebInspector.elementDragStart(null, this._windowSelectorDragging.bind(this), this._endWindowSelectorDragging.bind(this), event, "ew-resize");
break;
} else if (node === this._leftResizeElement || node === this._rightResizeElement) {
this._resizeWindow(node, event);
break;
}
node = node.parentNode;
}
},
_windowSelectorDragging: function(event)
{
this._overviewWindowSelector._updatePosition(event.pageX - this._parentElement.offsetLeft);
event.preventDefault();
},
_endWindowSelectorDragging: function(event)
{
WebInspector.elementDragEnd(event);
var window = this._overviewWindowSelector._close(event.pageX - this._parentElement.offsetLeft);
delete this._overviewWindowSelector;
if (window.end === window.start) { var middle = window.end;
window.start = Math.max(0, middle - WebInspector.TimelineOverviewPane.MinSelectableSize / 2);
window.end = Math.min(this._parentElement.clientWidth, middle + WebInspector.TimelineOverviewPane.MinSelectableSize / 2);
} else if (window.end - window.start < WebInspector.TimelineOverviewPane.MinSelectableSize) {
if (this._parentElement.clientWidth - window.end > WebInspector.TimelineOverviewPane.MinSelectableSize)
window.end = window.start + WebInspector.TimelineOverviewPane.MinSelectableSize;
else
window.start = window.end - WebInspector.TimelineOverviewPane.MinSelectableSize;
}
this._setWindowPosition(window.start, window.end);
},
_windowDragging: function(startX, windowLeft, windowRight, event)
{
var delta = event.pageX - startX;
var start = windowLeft + delta;
var end = windowRight + delta;
var windowSize = windowRight - windowLeft;
if (start < 0) {
start = 0;
end = windowSize;
}
if (end > this._parentElement.clientWidth) {
end = this._parentElement.clientWidth;
start = end - windowSize;
}
this._setWindowPosition(start, end);
event.preventDefault();
},
_resizeWindowLeft: function(start)
{
if (start < 10)
start = 0;
else if (start > this._rightResizeElement.offsetLeft - 4)
start = this._rightResizeElement.offsetLeft - 4;
this._setWindowPosition(start, null);
},
_resizeWindowRight: function(end)
{
if (end > this._parentElement.clientWidth - 10)
end = this._parentElement.clientWidth;
else if (end < this._leftResizeElement.offsetLeft + WebInspector.TimelineOverviewPane.MinSelectableSize)
end = this._leftResizeElement.offsetLeft + WebInspector.TimelineOverviewPane.MinSelectableSize;
this._setWindowPosition(null, end);
},
_resizeWindowMaximum: function()
{
this._setWindowPosition(0, this._parentElement.clientWidth);
},
_setWindowPosition: function(start, end)
{
var clientWidth = this._parentElement.clientWidth;
const rulerAdjustment = 1 / clientWidth;
if (typeof start === "number") {
this.windowLeft = start / clientWidth;
this._leftResizeElement.style.left = this.windowLeft * 100 + "%";
this._overviewWindowElement.style.left = this.windowLeft * 100 + "%";
this._overviewWindowBordersElement.style.left = (this.windowLeft - rulerAdjustment) * 100 + "%";
}
if (typeof end === "number") {
this.windowRight = end / clientWidth;
this._rightResizeElement.style.left = this.windowRight * 100 + "%";
}
this._overviewWindowElement.style.width = (this.windowRight - this.windowLeft) * 100 + "%";
this._overviewWindowBordersElement.style.right = (1 - this.windowRight + 2 * rulerAdjustment) * 100 + "%";
this.dispatchEventToListeners(WebInspector.TimelineOverviewWindow.Events.WindowChanged);
},
_endWindowDragging: function(event)
{
WebInspector.elementDragEnd(event);
},
_onMouseWheel: function(event)
{
const zoomFactor = 1.1;
const mouseWheelZoomSpeed = 1 / 120;
if (typeof event.wheelDeltaY === "number" && event.wheelDeltaY) {
var referencePoint = event.pageX - this._parentElement.offsetLeft;
this._zoom(Math.pow(zoomFactor, -event.wheelDeltaY * mouseWheelZoomSpeed), referencePoint);
}
if (typeof event.wheelDeltaX === "number" && event.wheelDeltaX) {
this._windowDragging(event.pageX + Math.round(event.wheelDeltaX * WebInspector.TimelineOverviewPane.WindowScrollSpeedFactor),
this._leftResizeElement.offsetLeft + WebInspector.TimelineOverviewPane.ResizerOffset,
this._rightResizeElement.offsetLeft + WebInspector.TimelineOverviewPane.ResizerOffset,
event);
}
},
_zoom: function(factor, referencePoint)
{
var left = this._leftResizeElement.offsetLeft + WebInspector.TimelineOverviewPane.ResizerOffset;
var right = this._rightResizeElement.offsetLeft + WebInspector.TimelineOverviewPane.ResizerOffset;
if (factor < 1 && factor * (right - left) < WebInspector.TimelineOverviewPane.MinSelectableSize)
return;
left = Math.max(0, referencePoint + (left - referencePoint) * factor);
right = Math.min(this._parentElement.clientWidth, referencePoint + (right - referencePoint) * factor);
this._setWindowPosition(left, right);
}
}
WebInspector.TimelineOverviewWindow.prototype.__proto__ = WebInspector.Object.prototype;
WebInspector.TimelineOverviewCalculator = function()
{
}
WebInspector.TimelineOverviewCalculator.prototype = {
computePosition: function(time)
{
return (time - this.minimumBoundary) / this.boundarySpan * this._workingArea + this.paddingLeft;
},
computeBarGraphPercentages: function(record)
{
var start = (WebInspector.TimelineModel.startTimeInSeconds(record) - this.minimumBoundary) / this.boundarySpan * 100;
var end = (WebInspector.TimelineModel.endTimeInSeconds(record) - this.minimumBoundary) / this.boundarySpan * 100;
return {start: start, end: end};
},
setWindow: function(minimum, maximum)
{
this.minimumBoundary = minimum >= 0 ? minimum : undefined;
this.maximumBoundary = maximum >= 0 ? maximum : undefined;
this.boundarySpan = this.maximumBoundary - this.minimumBoundary;
},
setDisplayWindow: function(paddingLeft, clientWidth)
{
this._workingArea = clientWidth - paddingLeft;
this.paddingLeft = paddingLeft;
},
reset: function()
{
this.setWindow();
},
formatTime: function(value)
{
return Number.secondsToString(value);
}
}
WebInspector.TimelineCategoryGraph = function(category, isEven)
{
this._category = category;
this._graphElement = document.createElement("div");
this._graphElement.className = "timeline-graph-side timeline-overview-graph-side" + (isEven ? " even" : "");
this._barAreaElement = document.createElement("div");
this._barAreaElement.className = "timeline-graph-bar-area timeline-category-" + category.name;
this._graphElement.appendChild(this._barAreaElement);
}
WebInspector.TimelineCategoryGraph.prototype = {
get graphElement()
{
return this._graphElement;
},
addChunk: function(start, end)
{
var chunk = document.createElement("div");
chunk.className = "timeline-graph-bar";
this._barAreaElement.appendChild(chunk);
chunk.style.setProperty("left", start + "%");
chunk.style.setProperty("width", (end - start) + "%");
},
clearChunks: function()
{
this._barAreaElement.removeChildren();
},
set dimmed(dimmed)
{
if (dimmed)
this._barAreaElement.removeStyleClass("timeline-category-" + this._category.name);
else
this._barAreaElement.addStyleClass("timeline-category-" + this._category.name);
}
}
WebInspector.TimelineOverviewPane.WindowSelector = function(parent, position)
{
this._startPosition = position;
this._width = parent.offsetWidth;
this._windowSelector = document.createElement("div");
this._windowSelector.className = "timeline-window-selector";
this._windowSelector.style.left = this._startPosition + "px";
this._windowSelector.style.right = this._width - this._startPosition + + "px";
parent.appendChild(this._windowSelector);
}
WebInspector.TimelineOverviewPane.WindowSelector.prototype = {
_createSelectorElement: function(parent, left, width, height)
{
var selectorElement = document.createElement("div");
selectorElement.className = "timeline-window-selector";
selectorElement.style.left = left + "px";
selectorElement.style.width = width + "px";
selectorElement.style.top = "0px";
selectorElement.style.height = height + "px";
parent.appendChild(selectorElement);
return selectorElement;
},
_close: function(position)
{
position = Math.max(0, Math.min(position, this._width));
this._windowSelector.parentNode.removeChild(this._windowSelector);
return this._startPosition < position ? {start: this._startPosition, end: position} : {start: position, end: this._startPosition};
},
_updatePosition: function(position)
{
position = Math.max(0, Math.min(position, this._width));
if (position < this._startPosition) {
this._windowSelector.style.left = position + "px";
this._windowSelector.style.right = this._width - this._startPosition + "px";
} else {
this._windowSelector.style.left = this._startPosition + "px";
this._windowSelector.style.right = this._width - position + "px";
}
}
}
WebInspector.HeapGraph = function(model) {
this._canvas = document.createElement("canvas");
this._model = model;
this._maxHeapSizeLabel = document.createElement("div");
this._maxHeapSizeLabel.addStyleClass("max");
this._maxHeapSizeLabel.addStyleClass("memory-graph-label");
this._minHeapSizeLabel = document.createElement("div");
this._minHeapSizeLabel.addStyleClass("min");
this._minHeapSizeLabel.addStyleClass("memory-graph-label");
this._element = document.createElement("div");
this._element.addStyleClass("hidden");
this._element.appendChild(this._canvas);
this._element.appendChild(this._maxHeapSizeLabel);
this._element.appendChild(this._minHeapSizeLabel);
}
WebInspector.HeapGraph.prototype = {
get element() {
return this._element;
},
get visible() {
return !this.element.hasStyleClass("hidden");
},
show: function() {
this.element.removeStyleClass("hidden");
},
hide: function() {
this.element.addStyleClass("hidden");
},
update: function()
{
var records = this._model.records;
if (!records.length)
return;
const yPadding = 5;
this._canvas.width = this.element.clientWidth;
this._canvas.height = this.element.clientHeight - yPadding;
const lowerOffset = 3;
var maxUsedHeapSize = 0;
var minUsedHeapSize = 100000000000;
var minTime = this._model.minimumRecordTime();
var maxTime = this._model.maximumRecordTime();;
WebInspector.TimelinePresentationModel.forAllRecords(records, function(r) {
maxUsedHeapSize = Math.max(maxUsedHeapSize, r.usedHeapSize || maxUsedHeapSize);
minUsedHeapSize = Math.min(minUsedHeapSize, r.usedHeapSize || minUsedHeapSize);
});
minUsedHeapSize = Math.min(minUsedHeapSize, maxUsedHeapSize);
var width = this._canvas.width;
var height = this._canvas.height - lowerOffset;
var xFactor = width / (maxTime - minTime);
var yFactor = height / (maxUsedHeapSize - minUsedHeapSize);
var histogram = new Array(width);
WebInspector.TimelinePresentationModel.forAllRecords(records, function(r) {
if (!r.usedHeapSize)
return;
var x = Math.round((WebInspector.TimelineModel.endTimeInSeconds(r) - minTime) * xFactor);
var y = Math.round((r.usedHeapSize - minUsedHeapSize) * yFactor);
histogram[x] = Math.max(histogram[x] || 0, y);
});
var ctx = this._canvas.getContext("2d");
this._clear(ctx);
height = height + 1;
ctx.beginPath();
var initialY = 0;
for (var k = 0; k < histogram.length; k++) {
if (histogram[k]) {
initialY = histogram[k];
break;
}
}
ctx.moveTo(0, height - initialY);
for (var x = 0; x < histogram.length; x++) {
if (!histogram[x])
continue;
ctx.lineTo(x, height - histogram[x]);
}
ctx.lineWidth = 0.5;
ctx.strokeStyle = "rgba(20,0,0,0.8)";
ctx.stroke();
ctx.fillStyle = "rgba(214,225,254, 0.8);";
ctx.lineTo(width, 60);
ctx.lineTo(0, 60);
ctx.lineTo(0, height - initialY);
ctx.fill();
ctx.closePath();
this._maxHeapSizeLabel.textContent = Number.bytesToString(maxUsedHeapSize);
this._minHeapSizeLabel.textContent = Number.bytesToString(minUsedHeapSize);
},
_clear: function(ctx) {
ctx.fillStyle = "rgba(255,255,255,0.8)";
ctx.fillRect(0, 0, this._canvas.width, this._canvas.height);
},
}
WebInspector.TimelineVerticalOverview = function(model) {
WebInspector.View.call(this);
this.element = document.createElement("canvas");
this.element.className = "timeline-vertical-overview-bars fill";
this._model = model;
this.reset();
this._outerPadding = 4;
this._maxInnerBarWidth = 10;
this._actualPadding = 5;
this._actualOuterBarWidth = this._maxInnerBarWidth + this._actualPadding;
this._context = this.element.getContext("2d");
this._fillStyles = {};
this._fillStyles.loading = this._context.createLinearGradient(0, 0, this._maxInnerBarWidth, 0);
this._fillStyles.loading.addColorStop(0, "rgb(201, 220, 245)");
this._fillStyles.loading.addColorStop(1, "rgb(109, 157, 222)");
this._fillStyles.scripting = this._context.createLinearGradient(0, 0, this._maxInnerBarWidth, 0);
this._fillStyles.scripting.addColorStop(0, "rgb(251, 222, 168)");
this._fillStyles.scripting.addColorStop(1, "rgb(234, 182, 77)");
this._fillStyles.rendering = this._context.createLinearGradient(0, 0, this._maxInnerBarWidth, 0);
this._fillStyles.rendering.addColorStop(0, "rgb(213, 185, 236)");
this._fillStyles.rendering.addColorStop(1, "rgb(137, 62, 200)");
this._borderStyles = {};
this._borderStyles.loading = "rgb(106, 152, 213)";
this._borderStyles.scripting = "rgb(223, 175, 77)";
this._borderStyles.rendering = "rgb(130, 59, 190)";
this._borderStyles._frameLength = "rgb(90, 90, 90)";
}
WebInspector.TimelineVerticalOverview.prototype = {
reset: function()
{
this._recordsPerBar = 1;
this._barTimes = [];
this._frames = [];
},
update: function()
{
const minBarWidth = 4;
this._framesPerBar = Math.max(1, this._frames.length * minBarWidth / this.element.clientWidth);
this._barTimes = [];
var visibleFrames = this._aggregateFrames(this._framesPerBar);
const paddingTop = 4;
var scale = (this.element.clientHeight - paddingTop) / this._normalBarLength;
this._renderBars(visibleFrames, scale);
},
addFrame: function(frame)
{
this._frames.push(frame);
},
framePosition: function(frame)
{
var frameNumber = this._frames.indexOf(frame);
if (frameNumber < 0)
return;
var barNumber = Math.floor(frameNumber / this._framesPerBar);
var firstBar = this._framesPerBar > 1 ? barNumber : Math.max(barNumber - 1, 0);
var lastBar = this._framesPerBar > 1 ? barNumber : Math.min(barNumber + 1, this._barTimes.length - 1);
return {
start: Math.ceil(this._barNumberToScreenPosition(firstBar) - this._actualPadding / 2),
end: Math.floor(this._barNumberToScreenPosition(lastBar + 1) - this._actualPadding / 2)
}
},
_aggregateFrames: function(framesPerBar)
{
var visibleFrames = [];
var durations = [];
var longestFrameTime = 0;
for (var barNumber = 0, currentFrame = 0; currentFrame < this._frames.length; ++barNumber) {
var barStartTime = this._frames[currentFrame].startTime;
var longestFrame = null;
for (var lastFrame = Math.min(Math.floor((barNumber + 1) * framesPerBar), this._frames.length);
currentFrame < lastFrame; ++currentFrame) {
if (!longestFrame || longestFrame.duration < this._frames[currentFrame].duration)
longestFrame = this._frames[currentFrame];
}
var barEndTime = this._frames[currentFrame - 1].endTime;
if (longestFrame) {
longestFrameTime = Math.max(longestFrameTime, longestFrame.duration);
visibleFrames.push(longestFrame);
this._barTimes.push({ startTime: barStartTime, endTime: barEndTime });
durations.push(longestFrame.duration);
}
}
this._normalBarLength = Math.min(longestFrameTime, 3 * durations.qselect(Math.floor(durations.length / 2)));
return visibleFrames;
},
_renderBars: function(frames, scale)
{
this.element.width = this.element.clientWidth;
this.element.height = this.element.clientHeight;
const maxPadding = 5;
this._actualOuterBarWidth = Math.min((this.element.width - 2 * this._outerPadding) / frames.length, this._maxInnerBarWidth + maxPadding);
this._actualPadding = Math.min(Math.floor(this._actualOuterBarWidth / 3), maxPadding);
for (var i = 0; i < frames.length; ++i) {
var width = this._actualOuterBarWidth - this._actualPadding;
this._renderBar(this._barNumberToScreenPosition(i), width, frames[i], scale);
}
},
_barNumberToScreenPosition: function(n)
{
return this._outerPadding + this._actualOuterBarWidth * n;
},
_renderBar: function(left, width, frame, scale)
{
var categories = Object.keys(frame.timeByCategory);
if (!categories.length)
return;
var x = Math.floor(left) + 0.5;
width = Math.floor(width);
for (var i = 0, bottomOffset = this.element.height; i < categories.length; ++i) {
var category = categories[i];
var duration = frame.timeByCategory[category];
if (!duration)
continue;
var height = duration * scale;
var y = Math.floor(bottomOffset - height) + 0.5;
this._context.save();
this._context.translate(x, 0);
this._context.scale(width / this._maxInnerBarWidth, 1);
this._context.fillStyle = this._fillStyles[category];
this._context.fillRect(0, y, this._maxInnerBarWidth, Math.floor(height));
this._context.restore();
this._context.strokeStyle = this._borderStyles[category];
this._context.strokeRect(x, y, width, Math.floor(height));
bottomOffset -= height - 1;
}
var nonCPUTime = frame.duration - frame.cpuTime;
var y0 = Math.floor(bottomOffset - nonCPUTime * scale) + 0.5;
var y1 = Math.floor(bottomOffset) + 0.5;
this._context.strokeStyle = this._borderStyles._frameLength;
this._context.beginPath();
this._context.moveTo(x, y1);
this._context.lineTo(x, y0);
this._context.lineTo(x + width, y0);
this._context.lineTo(x + width, y1);
this._context.stroke();
},
getWindowTimes: function(windowLeft, windowRight)
{
var windowSpan = this.element.clientWidth;
var leftOffset = windowLeft * windowSpan - this._outerPadding + this._actualPadding;
var rightOffset = windowRight * windowSpan - this._outerPadding;
var bars = this.element.children;
var firstBar = Math.floor(Math.max(leftOffset, 0) / this._actualOuterBarWidth);
var lastBar = Math.min(Math.floor(rightOffset / this._actualOuterBarWidth), this._barTimes.length - 1);
const snapToRightTolerancePixels = 3;
return {
startTime: firstBar >= this._barTimes.length ? Infinity : this._barTimes[firstBar].startTime,
endTime: rightOffset + snapToRightTolerancePixels > windowSpan ? Infinity : this._barTimes[lastBar].endTime
}
}
}
WebInspector.TimelineVerticalOverview.prototype.__proto__ = WebInspector.View.prototype;
WebInspector.TimelineOverviewModeSelector = function(selectCallback)
{
this.element = document.createElement("div");
this.element.className = "timeline-overview-mode-selector";
this._selectCallback = selectCallback;
this._buttons = [];
this.element.addEventListener("click", this._onClick.bind(this), false);
}
WebInspector.TimelineOverviewModeSelector.prototype = {
addButton: function(tooltip, className, value)
{
var button = this._createButton(tooltip, className, value);
this.element.appendChild(button);
this._buttons.push(button);
if (this._buttons.length === 1)
this._select(button, true);
},
get value()
{
return this._value;
},
_createButton: function(tooltip, className, value)
{
var button = document.createElement("button");
button.createChild("div", "glyph");
button.createChild("div", "glyph shadow");
button.className = className;
button.title = tooltip;
button.value = value;
return button;
},
_select: function(button, selected)
{
if (selected) {
button.addStyleClass("toggled");
this._value = button.value;
} else
button.removeStyleClass("toggled");
},
_onClick: function(event)
{
var button = event.target.enclosingNodeOrSelfWithNodeName("button");
if (!button)
return;
for (var i = 0; i < this._buttons.length; ++i)
this._select(this._buttons[i], this._buttons[i] === button);
this._selectCallback(button.value);
}
}