2 * Copyright (C) 2013 Google Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
14 * * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 * @param {!WebInspector.LayerTreeModel} model
34 * @extends {WebInspector.VBox}
36 WebInspector.LayerDetailsView = function(model)
38 WebInspector.VBox.call(this);
39 this.element.classList.add("layer-details-view");
40 this._emptyView = new WebInspector.EmptyView(WebInspector.UIString("Select a layer to see its details"));
43 this._model.addEventListener(WebInspector.LayerTreeModel.Events.LayerTreeChanged, this._onLayerTreeUpdated, this);
44 this._model.addEventListener(WebInspector.LayerTreeModel.Events.LayerPainted, this._onLayerPainted, this);
50 WebInspector.LayerDetailsView.Events = {
51 ObjectSelected: "ObjectSelected"
55 * @type {!Object.<string, string>}
57 WebInspector.LayerDetailsView.CompositingReasonDetail = {
58 "transform3D": WebInspector.UIString("Composition due to association with an element with a CSS 3D transform."),
59 "video": WebInspector.UIString("Composition due to association with a <video> element."),
60 "canvas": WebInspector.UIString("Composition due to the element being a <canvas> element."),
61 "plugin": WebInspector.UIString("Composition due to association with a plugin."),
62 "iFrame": WebInspector.UIString("Composition due to association with an <iframe> element."),
63 "backfaceVisibilityHidden": WebInspector.UIString("Composition due to association with an element with a \"backface-visibility: hidden\" style."),
64 "animation": WebInspector.UIString("Composition due to association with an animated element."),
65 "filters": WebInspector.UIString("Composition due to association with an element with CSS filters applied."),
66 "positionFixed": WebInspector.UIString("Composition due to association with an element with a \"position: fixed\" style."),
67 "positionSticky": WebInspector.UIString("Composition due to association with an element with a \"position: sticky\" style."),
68 "overflowScrollingTouch": WebInspector.UIString("Composition due to association with an element with a \"overflow-scrolling: touch\" style."),
69 "blending": WebInspector.UIString("Composition due to association with an element that has blend mode other than \"normal\"."),
70 "assumedOverlap": WebInspector.UIString("Composition due to association with an element that may overlap other composited elements."),
71 "overlap": WebInspector.UIString("Composition due to association with an element overlapping other composited elements."),
72 "negativeZIndexChildren": WebInspector.UIString("Composition due to association with an element with descendants that have a negative z-index."),
73 "transformWithCompositedDescendants": WebInspector.UIString("Composition due to association with an element with composited descendants."),
74 "opacityWithCompositedDescendants": WebInspector.UIString("Composition due to association with an element with opacity applied and composited descendants."),
75 "maskWithCompositedDescendants": WebInspector.UIString("Composition due to association with a masked element and composited descendants."),
76 "reflectionWithCompositedDescendants": WebInspector.UIString("Composition due to association with an element with a reflection and composited descendants."),
77 "filterWithCompositedDescendants": WebInspector.UIString("Composition due to association with an element with CSS filters applied and composited descendants."),
78 "blendingWithCompositedDescendants": WebInspector.UIString("Composition due to association with an element with CSS blending applied and composited descendants."),
79 "clipsCompositingDescendants": WebInspector.UIString("Composition due to association with an element clipping compositing descendants."),
80 "perspective": WebInspector.UIString("Composition due to association with an element with perspective applied."),
81 "preserve3D": WebInspector.UIString("Composition due to association with an element with a \"transform-style: preserve-3d\" style."),
82 "root": WebInspector.UIString("Root layer."),
83 "layerForClip": WebInspector.UIString("Layer for clip."),
84 "layerForScrollbar": WebInspector.UIString("Layer for scrollbar."),
85 "layerForScrollingContainer": WebInspector.UIString("Layer for scrolling container."),
86 "layerForForeground": WebInspector.UIString("Layer for foreground."),
87 "layerForBackground": WebInspector.UIString("Layer for background."),
88 "layerForMask": WebInspector.UIString("Layer for mask."),
89 "layerForVideoOverlay": WebInspector.UIString("Layer for video overlay.")
92 WebInspector.LayerDetailsView.prototype = {
94 * @param {!WebInspector.LayersPanel.ActiveObject} activeObject
96 setObject: function(activeObject)
98 this._layer = activeObject ? activeObject.layer : null;
99 this._scrollRectIndex = activeObject ? activeObject.scrollRectIndex : null;
100 if (this.isShowing())
106 WebInspector.View.prototype.wasShown.call(this);
110 _onLayerTreeUpdated: function()
112 if (this.isShowing())
117 * @param {!WebInspector.Event} event
119 _onLayerPainted: function(event)
121 var layer = /** @type {!WebInspector.Layer} */ (event.data);
122 if (this._layer === layer)
123 this._paintCountCell.textContent = layer.paintCount();
127 * @param {number} index
128 * @param {?Event} event
130 _onScrollRectClicked: function(index, event)
132 if (event.which !== 1)
134 this.dispatchEventToListeners(WebInspector.LayerDetailsView.Events.ObjectSelected, {layer: this._layer, scrollRectIndex: index});
138 * @param {!LayerTreeAgent.ScrollRect} scrollRect
139 * @param {number} index
141 _createScrollRectElement: function(scrollRect, index)
144 this._scrollRectsCell.createTextChild(", ");
145 var element = this._scrollRectsCell.createChild("span");
146 element.className = index === this._scrollRectIndex ? "scroll-rect active" : "scroll-rect";
147 element.textContent = WebInspector.LayerTreeModel.ScrollRectType[scrollRect.type].description + " (" + scrollRect.rect.x + ", " + scrollRect.rect.y +
148 ", " + scrollRect.rect.width + ", " + scrollRect.rect.height + ")";
149 element.addEventListener("click", this._onScrollRectClicked.bind(this, index), false);
155 this._tableElement.remove();
156 this._emptyView.show(this.element);
159 this._emptyView.detach();
160 this.element.appendChild(this._tableElement);
161 this._positionCell.textContent = WebInspector.UIString("%d,%d", this._layer.offsetX(), this._layer.offsetY());
162 this._sizeCell.textContent = WebInspector.UIString("%d × %d", this._layer.width(), this._layer.height());
163 this._paintCountCell.textContent = this._layer.paintCount();
164 const bytesPerPixel = 4;
165 this._memoryEstimateCell.textContent = Number.bytesToString(this._layer.invisible() ? 0 : this._layer.width() * this._layer.height() * bytesPerPixel);
166 this._layer.requestCompositingReasons(this._updateCompositingReasons.bind(this));
167 this._scrollRectsCell.removeChildren();
168 this._layer.scrollRects().forEach(this._createScrollRectElement.bind(this));
171 _createTable: function()
173 this._tableElement = this.element.createChild("table");
174 this._tbodyElement = this._tableElement.createChild("tbody");
175 this._positionCell = this._createRow(WebInspector.UIString("Position in parent:"));
176 this._sizeCell = this._createRow(WebInspector.UIString("Size:"));
177 this._compositingReasonsCell = this._createRow(WebInspector.UIString("Compositing Reasons:"));
178 this._memoryEstimateCell = this._createRow(WebInspector.UIString("Memory estimate:"));
179 this._paintCountCell = this._createRow(WebInspector.UIString("Paint count:"));
180 this._scrollRectsCell = this._createRow(WebInspector.UIString("Slow scroll regions:"));
184 * @param {string} title
186 _createRow: function(title)
188 var tr = this._tbodyElement.createChild("tr");
189 var titleCell = tr.createChild("td");
190 titleCell.textContent = title;
191 return tr.createChild("td");
195 * @param {!Array.<string>} compositingReasons
197 _updateCompositingReasons: function(compositingReasons)
199 if (!compositingReasons || !compositingReasons.length) {
200 this._compositingReasonsCell.textContent = "n/a";
203 var fragment = document.createDocumentFragment();
204 for (var i = 0; i < compositingReasons.length; ++i) {
206 fragment.appendChild(document.createTextNode(","));
207 var span = document.createElement("span");
208 span.title = WebInspector.LayerDetailsView.CompositingReasonDetail[compositingReasons[i]] || "";
209 span.textContent = compositingReasons[i];
210 fragment.appendChild(span);
212 this._compositingReasonsCell.removeChildren();
213 this._compositingReasonsCell.appendChild(fragment);
216 __proto__: WebInspector.VBox.prototype