tracing/tracing/ui/extras/chrome/cc/display_item_debugger.html - external/trace-viewer - Git at Google

 <!DOCTYPE html>
 <!--
 Copyright (c) 2015 The Chromium Authors. All rights reserved.
 Use of this source code is governed by a BSD-style license that can be
 found in the LICENSE file.
 -->

 <link rel="import" href="/extras/chrome/cc/picture.html">
 <link rel="import" href="/ui/analysis/generic_object_view.html">
 <link rel="import" href="/ui/base/drag_handle.html">
 <link rel="import" href="/ui/base/info_bar.html">
 <link rel="import" href="/ui/base/hotkey_controller.html">
 <link rel="import" href="/ui/base/list_view.html">
 <link rel="import" href="/ui/base/mouse_mode_selector.html">
 <link rel="import" href="/ui/base/overlay.html">
 <link rel="import" href="/ui/base/utils.html">
 <link rel="import" href="/ui/extras/chrome/cc/picture_ops_list_view.html">

 <template id="tr-ui-e-chrome-cc-display-item-debugger-template">
   <style>
   * /deep/ tr-ui-e-chrome-cc-display-item-debugger {
     -webkit-flex: 1 1 auto;
     display: -webkit-flex;
   }

   * /deep/ tr-ui-e-chrome-cc-display-item-debugger > left-panel {
     -webkit-flex-direction: column;
     display: -webkit-flex;
     min-width: 300px;
     overflow-y: auto;
   }

   * /deep/ tr-ui-e-chrome-cc-display-item-debugger > left-panel >
         display-item-info {
     -webkit-flex: 1 1 auto;
     padding-top: 2px;
   }

   * /deep/ tr-ui-e-chrome-cc-display-item-debugger > left-panel >
         display-item-info .title {
     font-weight: bold;
     margin-left: 5px;
     margin-right: 5px;
   }

   * /deep/ tr-ui-e-chrome-cc-display-item-debugger > left-panel >
         display-item-info .export {
     margin: 5px;
   }

   * /deep/ tr-ui-e-chrome-cc-display-item-debugger > x-drag-handle {
     -webkit-flex: 0 0 auto;
   }

   * /deep/ tr-ui-e-chrome-cc-display-item-debugger > right-panel {
     -webkit-flex: 1 1 auto;
     display: -webkit-flex;
   }

   * /deep/ tr-ui-e-chrome-cc-display-item-debugger > left-panel >
       display-item-info > header {
     border-bottom: 1px solid #555;
   }

   * /deep/ tr-ui-e-chrome-cc-display-item-debugger > left-panel >
       display-item-info > .x-list-view > div {
     border-bottom: 1px solid #555;
     padding-top: 3px;
     padding-bottom: 3px;
     padding-left: 5px;
   }

   * /deep/ tr-ui-e-chrome-cc-display-item-debugger > left-panel >
       display-item-info > .x-list-view > div:hover {
     background-color: #f0f0f0;
     cursor: pointer;
   }

   /*************************************************/

   * /deep/ tr-ui-e-chrome-cc-display-item-debugger > right-panel >
       tr-ui-e-chrome-cc-picture-ops-list-view.hasPictureOps {
     display: block;
   }

   * /deep/ tr-ui-e-chrome-cc-display-item-debugger > right-panel >
         x-drag-handle.hasPictureOps {
     display: block;
   }

   * /deep/ tr-ui-e-chrome-cc-display-item-debugger > right-panel >
         tr-ui-e-chrome-cc-picture-ops-list-view {
     display: none;
     overflow-y: auto;
   }

   * /deep/ tr-ui-e-chrome-cc-display-item-debugger > right-panel >
         x-drag-handle {
     display: none;
   }

   * /deep/ tr-ui-e-chrome-cc-display-item-debugger raster-area {
     -webkit-flex: 1 1 auto;
     background-color: #ddd;
     min-height: 200px;
     min-width: 200px;
     overflow-y: auto;
     padding-left: 5px;
   }
   </style>

   <left-panel>
     <display-item-info>
       <header>
         <span class='title'>Display Item List</span>
         <span class='size'></span>
         <div class='export'>
           <input class='dlfilename' type='text' value='displayitemlist.json' />
           <button class='dlexport'>Export display item list</button>
         </div>
         <div class='export'>
           <input class='skpfilename' type='text' value='skpicture.skp' />
           <button class='skpexport'>Export list as SkPicture</button>
         </div>
       </header>
     </display-item-info>
   </left-panel>
   <right-panel>
     <raster-area><canvas></canvas></raster-area>
   </right-panel>
 </template>

 <script>
 'use strict';

 tr.exportTo('tr.ui.e.chrome.cc', function() {
   var THIS_DOC = document.currentScript.ownerDocument;

   /**
    * DisplayItemDebugger is a view of a DisplayItemListSnapshot for inspecting
    * a display item list and the pictures within it.
    *
    * @constructor
    */
   var DisplayItemDebugger = tr.ui.b.define(
       'tr-ui-e-chrome-cc-display-item-debugger');

   DisplayItemDebugger.prototype = {
     __proto__: HTMLUnknownElement.prototype,

     decorate: function() {
       var node = tr.ui.b.instantiateTemplate(
           '#tr-ui-e-chrome-cc-display-item-debugger-template', THIS_DOC);

       this.appendChild(node);

       this.pictureAsImageData_ = undefined;
       this.zoomScaleValue_ = 1;

       this.sizeInfo_ = this.querySelector('.size');
       this.rasterArea_ = this.querySelector('raster-area');
       this.rasterCanvas_ = this.rasterArea_.querySelector('canvas');
       this.rasterCtx_ = this.rasterCanvas_.getContext('2d');

       this.trackMouse_();

       this.displayItemInfo_ = this.querySelector('display-item-info');
       this.displayItemInfo_.addEventListener(
           'click', this.onDisplayItemInfoClick_.bind(this), false);

       this.displayItemListView_ = new tr.ui.b.ListView();
       this.displayItemListView_.addEventListener('selection-changed',
           this.onDisplayItemListSelection_.bind(this));
       this.displayItemInfo_.appendChild(this.displayItemListView_);

       this.displayListFilename_ = this.querySelector('.dlfilename');
       this.displayListExportButton_ = this.querySelector('.dlexport');
       this.displayListExportButton_.addEventListener(
           'click', this.onExportDisplayListClicked_.bind(this));

       this.skpFilename_ = this.querySelector('.skpfilename');
       this.skpExportButton_ = this.querySelector('.skpexport');
       this.skpExportButton_.addEventListener(
           'click', this.onExportSkPictureClicked_.bind(this));

       var leftPanel = this.querySelector('left-panel');

       var middleDragHandle = new tr.ui.b.DragHandle();
       middleDragHandle.horizontal = false;
       middleDragHandle.target = leftPanel;

       var rightPanel = this.querySelector('right-panel');

       this.infoBar_ = document.createElement('tr-ui-b-info-bar');
       this.rasterArea_.insertBefore(this.infoBar_, this.rasterCanvas_);

       this.insertBefore(middleDragHandle, rightPanel);

       this.picture_ = undefined;

       this.pictureOpsListView_ = new tr.ui.e.chrome.cc.PictureOpsListView();
       rightPanel.insertBefore(this.pictureOpsListView_, this.rasterArea_);

       this.pictureOpsListDragHandle_ = new tr.ui.b.DragHandle();
       this.pictureOpsListDragHandle_.horizontal = false;
       this.pictureOpsListDragHandle_.target = this.pictureOpsListView_;
       rightPanel.insertBefore(this.pictureOpsListDragHandle_, this.rasterArea_);
     },

     get picture() {
       return this.picture_;
     },

     set displayItemList(displayItemList) {
       this.displayItemList_ = displayItemList;
       this.picture = this.displayItemList_;

       this.displayItemListView_.clear();
       this.displayItemList_.items.forEach(function(item) {
         var newListItem = document.createElement('div');
         newListItem.innerText = item;
         // FIXME: We should improve our output to better format this.
         var text = item.skp64 ? item.name : item;
         this.displayItemListView_.addItem(text);
       }.bind(this));
     },

     set picture(picture) {
       this.picture_ = picture;

       // Hide the ops list if we are showing the "main" display item list.
       var showOpsList = picture && picture !== this.displayItemList_;
       this.updateDrawOpsList_(showOpsList);

       if (picture) {
         var size = this.getRasterCanvasSize_();
         this.rasterCanvas_.width = size.width;
         this.rasterCanvas_.height = size.height;
       }

       var bounds = this.rasterArea_.getBoundingClientRect();
       var selectorBounds = this.mouseModeSelector_.getBoundingClientRect();
       this.mouseModeSelector_.pos = {
         x: (bounds.right - selectorBounds.width - 10),
         y: bounds.top
       };

       this.rasterize_();

       this.scheduleUpdateContents_();
     },

     getRasterCanvasSize_: function() {
       var style = window.getComputedStyle(this.rasterArea_);
       var width = parseInt(style.width);
       var height = parseInt(style.height);
       if (this.picture_) {
         width = Math.max(width, this.picture_.layerRect.width);
         height = Math.max(height, this.picture_.layerRect.height);
       }

       return {
         width: width,
         height: height
       };
     },

     scheduleUpdateContents_: function() {
       if (this.updateContentsPending_)
         return;
       this.updateContentsPending_ = true;
       tr.b.requestAnimationFrameInThisFrameIfPossible(
           this.updateContents_.bind(this)
       );
     },

     updateContents_: function() {
       this.updateContentsPending_ = false;

       if (this.picture_) {
         this.sizeInfo_.textContent = '(' +
             this.picture_.layerRect.width + ' x ' +
             this.picture_.layerRect.height + ')';
       }

       // Return if picture hasn't finished rasterizing.
       if (!this.pictureAsImageData_)
         return;

       this.infoBar_.visible = false;
       this.infoBar_.removeAllButtons();
       if (this.pictureAsImageData_.error) {
         this.infoBar_.message = 'Cannot rasterize...';
         this.infoBar_.addButton('More info...', function(e) {
           var overlay = new tr.ui.b.Overlay();
           overlay.textContent = this.pictureAsImageData_.error;
           overlay.visible = true;
           e.stopPropagation();
           return false;
         }.bind(this));
         this.infoBar_.visible = true;
       }

       this.drawPicture_();
     },

     drawPicture_: function() {
       var size = this.getRasterCanvasSize_();
       if (size.width !== this.rasterCanvas_.width)
         this.rasterCanvas_.width = size.width;
       if (size.height !== this.rasterCanvas_.height)
         this.rasterCanvas_.height = size.height;

       this.rasterCtx_.clearRect(0, 0, size.width, size.height);

       if (!this.picture_ || !this.pictureAsImageData_.imageData)
         return;

       var imgCanvas = this.pictureAsImageData_.asCanvas();
       var w = imgCanvas.width;
       var h = imgCanvas.height;
       this.rasterCtx_.drawImage(imgCanvas, 0, 0, w, h,
                                 0, 0, w * this.zoomScaleValue_,
                                 h * this.zoomScaleValue_);
     },

     rasterize_: function() {
       if (this.picture_) {
         this.picture_.rasterize(
             {
               showOverdraw: false
             },
             this.onRasterComplete_.bind(this));
       }
     },

     onRasterComplete_: function(pictureAsImageData) {
       this.pictureAsImageData_ = pictureAsImageData;
       this.scheduleUpdateContents_();
     },

     onDisplayItemListSelection_: function(e) {
       var selected = this.displayItemListView_.selectedElement;

       if (!selected) {
         this.picture = this.displayItemList_;
         return;
       }

       var index = Array.prototype.indexOf.call(
           this.displayItemListView_.children, selected);
       var displayItem = this.displayItemList_.items[index];
       if (displayItem && displayItem.skp64)
         this.picture = new tr.e.cc.Picture(
             displayItem.skp64, this.displayItemList_.layerRect);
       else
         this.picture = undefined;
     },

     onDisplayItemInfoClick_: function(e) {
       if (e && e.target == this.displayItemInfo_) {
         this.displayItemListView_.selectedElement = undefined;
       }
     },

     updateDrawOpsList_: function(showOpsList) {
       if (showOpsList) {
         this.pictureOpsListView_.picture = this.picture_;
         if (this.pictureOpsListView_.numOps > 0) {
           this.pictureOpsListView_.classList.add('hasPictureOps');
           this.pictureOpsListDragHandle_.classList.add('hasPictureOps');
         }
       } else {
         this.pictureOpsListView_.classList.remove('hasPictureOps');
         this.pictureOpsListDragHandle_.classList.remove('hasPictureOps');
       }
     },

     trackMouse_: function() {
       this.mouseModeSelector_ = document.createElement(
           'tr-ui-b-mouse-mode-selector');
       this.mouseModeSelector_.targetElement = this.rasterArea_;
       this.rasterArea_.appendChild(this.mouseModeSelector_);

       this.mouseModeSelector_.supportedModeMask =
           tr.ui.b.MOUSE_SELECTOR_MODE.ZOOM;
       this.mouseModeSelector_.mode = tr.ui.b.MOUSE_SELECTOR_MODE.ZOOM;
       this.mouseModeSelector_.defaultMode = tr.ui.b.MOUSE_SELECTOR_MODE.ZOOM;
       this.mouseModeSelector_.settingsKey = 'pictureDebugger.mouseModeSelector';

       this.mouseModeSelector_.addEventListener('beginzoom',
           this.onBeginZoom_.bind(this));
       this.mouseModeSelector_.addEventListener('updatezoom',
           this.onUpdateZoom_.bind(this));
       this.mouseModeSelector_.addEventListener('endzoom',
           this.onEndZoom_.bind(this));
     },

     onBeginZoom_: function(e) {
       this.isZooming_ = true;

       this.lastMouseViewPos_ = this.extractRelativeMousePosition_(e);

       e.preventDefault();
     },

     onUpdateZoom_: function(e) {
       if (!this.isZooming_)
         return;

       var currentMouseViewPos = this.extractRelativeMousePosition_(e);

       // Take the distance the mouse has moved and we want to zoom at about
       // 1/1000th of that speed. 0.01 feels jumpy. This could possibly be tuned
       // more if people feel it's too slow.
       this.zoomScaleValue_ +=
           ((this.lastMouseViewPos_.y - currentMouseViewPos.y) * 0.001);
       this.zoomScaleValue_ = Math.max(this.zoomScaleValue_, 0.1);

       this.drawPicture_();

       this.lastMouseViewPos_ = currentMouseViewPos;
     },

     onEndZoom_: function(e) {
       this.lastMouseViewPos_ = undefined;
       this.isZooming_ = false;
       e.preventDefault();
     },

     extractRelativeMousePosition_: function(e) {
       return {
         x: e.clientX - this.rasterArea_.offsetLeft,
         y: e.clientY - this.rasterArea_.offsetTop
       };
     },

     saveFile_: function(filename, rawData) {
       if (!rawData)
         return;

       // Convert this String into an Uint8Array
       var length = rawData.length;
       var arrayBuffer = new ArrayBuffer(length);
       var uint8Array = new Uint8Array(arrayBuffer);
       for (var c = 0; c < length; c++)
         uint8Array[c] = rawData.charCodeAt(c);

       // Create a blob URL from the binary array.
       var blob = new Blob([uint8Array], {type: 'application/octet-binary'});
       var blobUrl = window.URL.createObjectURL(blob);

       // Create a link and click on it.
       var link = document.createElementNS('http://www.w3.org/1999/xhtml', 'a');
       link.href = blobUrl;
       link.download = filename;
       var event = document.createEvent('MouseEvents');
       event.initMouseEvent(
           'click', true, false, window, 0, 0, 0, 0, 0,
           false, false, false, false, 0, null);
       link.dispatchEvent(event);
     },

     onExportDisplayListClicked_: function() {
       var rawData = JSON.stringify(this.displayItemList_.items);
       this.saveFile_(this.displayListFilename_.value, rawData);
     },

     onExportSkPictureClicked_: function() {
       var rawData = atob(this.picture_.getBase64SkpData());
       this.saveFile_(this.skpFilename_.value, rawData);
     }
   };

   return {
     DisplayItemDebugger: DisplayItemDebugger
   };
 });
 </script>
	<!DOCTYPE html>
	<!--
	Copyright (c) 2015 The Chromium Authors. All rights reserved.
	Use of this source code is governed by a BSD-style license that can be
	found in the LICENSE file.
	-->

	<link rel="import" href="/extras/chrome/cc/picture.html">
	<link rel="import" href="/ui/analysis/generic_object_view.html">
	<link rel="import" href="/ui/base/drag_handle.html">
	<link rel="import" href="/ui/base/info_bar.html">
	<link rel="import" href="/ui/base/hotkey_controller.html">
	<link rel="import" href="/ui/base/list_view.html">
	<link rel="import" href="/ui/base/mouse_mode_selector.html">
	<link rel="import" href="/ui/base/overlay.html">
	<link rel="import" href="/ui/base/utils.html">
	<link rel="import" href="/ui/extras/chrome/cc/picture_ops_list_view.html">

	<template id="tr-ui-e-chrome-cc-display-item-debugger-template">
	<style>
	* /deep/ tr-ui-e-chrome-cc-display-item-debugger {
	-webkit-flex: 1 1 auto;
	display: -webkit-flex;
	}

	* /deep/ tr-ui-e-chrome-cc-display-item-debugger > left-panel {
	-webkit-flex-direction: column;
	display: -webkit-flex;
	min-width: 300px;
	overflow-y: auto;
	}

	* /deep/ tr-ui-e-chrome-cc-display-item-debugger > left-panel >
	display-item-info {
	-webkit-flex: 1 1 auto;
	padding-top: 2px;
	}

	* /deep/ tr-ui-e-chrome-cc-display-item-debugger > left-panel >
	display-item-info .title {
	font-weight: bold;
	margin-left: 5px;
	margin-right: 5px;
	}

	* /deep/ tr-ui-e-chrome-cc-display-item-debugger > left-panel >
	display-item-info .export {
	margin: 5px;
	}

	* /deep/ tr-ui-e-chrome-cc-display-item-debugger > x-drag-handle {
	-webkit-flex: 0 0 auto;
	}

	* /deep/ tr-ui-e-chrome-cc-display-item-debugger > right-panel {
	-webkit-flex: 1 1 auto;
	display: -webkit-flex;
	}

	* /deep/ tr-ui-e-chrome-cc-display-item-debugger > left-panel >
	display-item-info > header {
	border-bottom: 1px solid #555;
	}

	* /deep/ tr-ui-e-chrome-cc-display-item-debugger > left-panel >
	display-item-info > .x-list-view > div {
	border-bottom: 1px solid #555;
	padding-top: 3px;
	padding-bottom: 3px;
	padding-left: 5px;
	}

	* /deep/ tr-ui-e-chrome-cc-display-item-debugger > left-panel >
	display-item-info > .x-list-view > div:hover {
	background-color: #f0f0f0;
	cursor: pointer;
	}

	/*************************************************/

	* /deep/ tr-ui-e-chrome-cc-display-item-debugger > right-panel >
	tr-ui-e-chrome-cc-picture-ops-list-view.hasPictureOps {
	display: block;
	}

	* /deep/ tr-ui-e-chrome-cc-display-item-debugger > right-panel >
	x-drag-handle.hasPictureOps {
	display: block;
	}

	* /deep/ tr-ui-e-chrome-cc-display-item-debugger > right-panel >
	tr-ui-e-chrome-cc-picture-ops-list-view {
	display: none;
	overflow-y: auto;
	}

	* /deep/ tr-ui-e-chrome-cc-display-item-debugger > right-panel >
	x-drag-handle {
	display: none;
	}

	* /deep/ tr-ui-e-chrome-cc-display-item-debugger raster-area {
	-webkit-flex: 1 1 auto;
	background-color: #ddd;
	min-height: 200px;
	min-width: 200px;
	overflow-y: auto;
	padding-left: 5px;
	}
	</style>

	<left-panel>
	<display-item-info>
	<header>
	<span class='title'>Display Item List</span>
	<span class='size'></span>
	<div class='export'>
	<input class='dlfilename' type='text' value='displayitemlist.json' />
	<button class='dlexport'>Export display item list</button>
	</div>
	<div class='export'>
	<input class='skpfilename' type='text' value='skpicture.skp' />
	<button class='skpexport'>Export list as SkPicture</button>
	</div>
	</header>
	</display-item-info>
	</left-panel>
	<right-panel>
	<raster-area><canvas></canvas></raster-area>
	</right-panel>
	</template>

	<script>
	'use strict';

	tr.exportTo('tr.ui.e.chrome.cc', function() {
	var THIS_DOC = document.currentScript.ownerDocument;

	/**
	* DisplayItemDebugger is a view of a DisplayItemListSnapshot for inspecting
	* a display item list and the pictures within it.
	*
	* @constructor
	*/
	var DisplayItemDebugger = tr.ui.b.define(
	'tr-ui-e-chrome-cc-display-item-debugger');

	DisplayItemDebugger.prototype = {
	__proto__: HTMLUnknownElement.prototype,

	decorate: function() {
	var node = tr.ui.b.instantiateTemplate(
	'#tr-ui-e-chrome-cc-display-item-debugger-template', THIS_DOC);

	this.appendChild(node);

	this.pictureAsImageData_ = undefined;
	this.zoomScaleValue_ = 1;

	this.sizeInfo_ = this.querySelector('.size');
	this.rasterArea_ = this.querySelector('raster-area');
	this.rasterCanvas_ = this.rasterArea_.querySelector('canvas');
	this.rasterCtx_ = this.rasterCanvas_.getContext('2d');

	this.trackMouse_();

	this.displayItemInfo_ = this.querySelector('display-item-info');
	this.displayItemInfo_.addEventListener(
	'click', this.onDisplayItemInfoClick_.bind(this), false);

	this.displayItemListView_ = new tr.ui.b.ListView();
	this.displayItemListView_.addEventListener('selection-changed',
	this.onDisplayItemListSelection_.bind(this));
	this.displayItemInfo_.appendChild(this.displayItemListView_);

	this.displayListFilename_ = this.querySelector('.dlfilename');
	this.displayListExportButton_ = this.querySelector('.dlexport');
	this.displayListExportButton_.addEventListener(
	'click', this.onExportDisplayListClicked_.bind(this));

	this.skpFilename_ = this.querySelector('.skpfilename');
	this.skpExportButton_ = this.querySelector('.skpexport');
	this.skpExportButton_.addEventListener(
	'click', this.onExportSkPictureClicked_.bind(this));

	var leftPanel = this.querySelector('left-panel');

	var middleDragHandle = new tr.ui.b.DragHandle();
	middleDragHandle.horizontal = false;
	middleDragHandle.target = leftPanel;

	var rightPanel = this.querySelector('right-panel');

	this.infoBar_ = document.createElement('tr-ui-b-info-bar');
	this.rasterArea_.insertBefore(this.infoBar_, this.rasterCanvas_);

	this.insertBefore(middleDragHandle, rightPanel);

	this.picture_ = undefined;

	this.pictureOpsListView_ = new tr.ui.e.chrome.cc.PictureOpsListView();
	rightPanel.insertBefore(this.pictureOpsListView_, this.rasterArea_);

	this.pictureOpsListDragHandle_ = new tr.ui.b.DragHandle();
	this.pictureOpsListDragHandle_.horizontal = false;
	this.pictureOpsListDragHandle_.target = this.pictureOpsListView_;
	rightPanel.insertBefore(this.pictureOpsListDragHandle_, this.rasterArea_);
	},

	get picture() {
	return this.picture_;
	},

	set displayItemList(displayItemList) {
	this.displayItemList_ = displayItemList;
	this.picture = this.displayItemList_;

	this.displayItemListView_.clear();
	this.displayItemList_.items.forEach(function(item) {
	var newListItem = document.createElement('div');
	newListItem.innerText = item;
	// FIXME: We should improve our output to better format this.
	var text = item.skp64 ? item.name : item;
	this.displayItemListView_.addItem(text);
	}.bind(this));
	},

	set picture(picture) {
	this.picture_ = picture;

	// Hide the ops list if we are showing the "main" display item list.
	var showOpsList = picture && picture !== this.displayItemList_;
	this.updateDrawOpsList_(showOpsList);

	if (picture) {
	var size = this.getRasterCanvasSize_();
	this.rasterCanvas_.width = size.width;
	this.rasterCanvas_.height = size.height;
	}

	var bounds = this.rasterArea_.getBoundingClientRect();
	var selectorBounds = this.mouseModeSelector_.getBoundingClientRect();
	this.mouseModeSelector_.pos = {
	x: (bounds.right - selectorBounds.width - 10),
	y: bounds.top
	};

	this.rasterize_();

	this.scheduleUpdateContents_();
	},

	getRasterCanvasSize_: function() {
	var style = window.getComputedStyle(this.rasterArea_);
	var width = parseInt(style.width);
	var height = parseInt(style.height);
	if (this.picture_) {
	width = Math.max(width, this.picture_.layerRect.width);
	height = Math.max(height, this.picture_.layerRect.height);
	}

	return {
	width: width,
	height: height
	};
	},

	scheduleUpdateContents_: function() {
	if (this.updateContentsPending_)
	return;
	this.updateContentsPending_ = true;
	tr.b.requestAnimationFrameInThisFrameIfPossible(
	this.updateContents_.bind(this)
	);
	},

	updateContents_: function() {
	this.updateContentsPending_ = false;

	if (this.picture_) {
	this.sizeInfo_.textContent = '(' +
	this.picture_.layerRect.width + ' x ' +
	this.picture_.layerRect.height + ')';
	}

	// Return if picture hasn't finished rasterizing.
	if (!this.pictureAsImageData_)
	return;

	this.infoBar_.visible = false;
	this.infoBar_.removeAllButtons();
	if (this.pictureAsImageData_.error) {
	this.infoBar_.message = 'Cannot rasterize...';
	this.infoBar_.addButton('More info...', function(e) {
	var overlay = new tr.ui.b.Overlay();
	overlay.textContent = this.pictureAsImageData_.error;
	overlay.visible = true;
	e.stopPropagation();
	return false;
	}.bind(this));
	this.infoBar_.visible = true;
	}

	this.drawPicture_();
	},

	drawPicture_: function() {
	var size = this.getRasterCanvasSize_();
	if (size.width !== this.rasterCanvas_.width)
	this.rasterCanvas_.width = size.width;
	if (size.height !== this.rasterCanvas_.height)
	this.rasterCanvas_.height = size.height;

	this.rasterCtx_.clearRect(0, 0, size.width, size.height);

	if (!this.picture_ \|\| !this.pictureAsImageData_.imageData)
	return;

	var imgCanvas = this.pictureAsImageData_.asCanvas();
	var w = imgCanvas.width;
	var h = imgCanvas.height;
	this.rasterCtx_.drawImage(imgCanvas, 0, 0, w, h,
	0, 0, w * this.zoomScaleValue_,
	h * this.zoomScaleValue_);
	},

	rasterize_: function() {
	if (this.picture_) {
	this.picture_.rasterize(
	{
	showOverdraw: false
	},
	this.onRasterComplete_.bind(this));
	}
	},

	onRasterComplete_: function(pictureAsImageData) {
	this.pictureAsImageData_ = pictureAsImageData;
	this.scheduleUpdateContents_();
	},

	onDisplayItemListSelection_: function(e) {
	var selected = this.displayItemListView_.selectedElement;

	if (!selected) {
	this.picture = this.displayItemList_;
	return;
	}

	var index = Array.prototype.indexOf.call(
	this.displayItemListView_.children, selected);
	var displayItem = this.displayItemList_.items[index];
	if (displayItem && displayItem.skp64)
	this.picture = new tr.e.cc.Picture(
	displayItem.skp64, this.displayItemList_.layerRect);
	else
	this.picture = undefined;
	},

	onDisplayItemInfoClick_: function(e) {
	if (e && e.target == this.displayItemInfo_) {
	this.displayItemListView_.selectedElement = undefined;
	}
	},

	updateDrawOpsList_: function(showOpsList) {
	if (showOpsList) {
	this.pictureOpsListView_.picture = this.picture_;
	if (this.pictureOpsListView_.numOps > 0) {
	this.pictureOpsListView_.classList.add('hasPictureOps');
	this.pictureOpsListDragHandle_.classList.add('hasPictureOps');
	}
	} else {
	this.pictureOpsListView_.classList.remove('hasPictureOps');
	this.pictureOpsListDragHandle_.classList.remove('hasPictureOps');
	}
	},

	trackMouse_: function() {
	this.mouseModeSelector_ = document.createElement(
	'tr-ui-b-mouse-mode-selector');
	this.mouseModeSelector_.targetElement = this.rasterArea_;
	this.rasterArea_.appendChild(this.mouseModeSelector_);

	this.mouseModeSelector_.supportedModeMask =
	tr.ui.b.MOUSE_SELECTOR_MODE.ZOOM;
	this.mouseModeSelector_.mode = tr.ui.b.MOUSE_SELECTOR_MODE.ZOOM;
	this.mouseModeSelector_.defaultMode = tr.ui.b.MOUSE_SELECTOR_MODE.ZOOM;
	this.mouseModeSelector_.settingsKey = 'pictureDebugger.mouseModeSelector';

	this.mouseModeSelector_.addEventListener('beginzoom',
	this.onBeginZoom_.bind(this));
	this.mouseModeSelector_.addEventListener('updatezoom',
	this.onUpdateZoom_.bind(this));
	this.mouseModeSelector_.addEventListener('endzoom',
	this.onEndZoom_.bind(this));
	},

	onBeginZoom_: function(e) {
	this.isZooming_ = true;

	this.lastMouseViewPos_ = this.extractRelativeMousePosition_(e);

	e.preventDefault();
	},

	onUpdateZoom_: function(e) {
	if (!this.isZooming_)
	return;

	var currentMouseViewPos = this.extractRelativeMousePosition_(e);

	// Take the distance the mouse has moved and we want to zoom at about
	// 1/1000th of that speed. 0.01 feels jumpy. This could possibly be tuned
	// more if people feel it's too slow.
	this.zoomScaleValue_ +=
	((this.lastMouseViewPos_.y - currentMouseViewPos.y) * 0.001);
	this.zoomScaleValue_ = Math.max(this.zoomScaleValue_, 0.1);

	this.drawPicture_();

	this.lastMouseViewPos_ = currentMouseViewPos;
	},

	onEndZoom_: function(e) {
	this.lastMouseViewPos_ = undefined;
	this.isZooming_ = false;
	e.preventDefault();
	},

	extractRelativeMousePosition_: function(e) {
	return {
	x: e.clientX - this.rasterArea_.offsetLeft,
	y: e.clientY - this.rasterArea_.offsetTop
	};
	},

	saveFile_: function(filename, rawData) {
	if (!rawData)
	return;

	// Convert this String into an Uint8Array
	var length = rawData.length;
	var arrayBuffer = new ArrayBuffer(length);
	var uint8Array = new Uint8Array(arrayBuffer);
	for (var c = 0; c < length; c++)
	uint8Array[c] = rawData.charCodeAt(c);

	// Create a blob URL from the binary array.
	var blob = new Blob([uint8Array], {type: 'application/octet-binary'});
	var blobUrl = window.URL.createObjectURL(blob);

	// Create a link and click on it.
	var link = document.createElementNS('http://www.w3.org/1999/xhtml', 'a');
	link.href = blobUrl;
	link.download = filename;
	var event = document.createEvent('MouseEvents');
	event.initMouseEvent(
	'click', true, false, window, 0, 0, 0, 0, 0,
	false, false, false, false, 0, null);
	link.dispatchEvent(event);
	},

	onExportDisplayListClicked_: function() {
	var rawData = JSON.stringify(this.displayItemList_.items);
	this.saveFile_(this.displayListFilename_.value, rawData);
	},

	onExportSkPictureClicked_: function() {
	var rawData = atob(this.picture_.getBase64SkpData());
	this.saveFile_(this.skpFilename_.value, rawData);
	}
	};

	return {
	DisplayItemDebugger: DisplayItemDebugger
	};
	});
	</script>