| Chris Craik | b122baf | 2015-03-05 13:58:42 -0800 | [diff] [blame] | 1 | <!DOCTYPE html> |
| 2 | <!-- |
| 3 | Copyright (c) 2013 The Chromium Authors. All rights reserved. |
| 4 | Use of this source code is governed by a BSD-style license that can be |
| 5 | found in the LICENSE file. |
| 6 | --> |
| 7 | |
| 8 | <link rel="stylesheet" href="/core/tracks/rect_track.css"> |
| 9 | |
| 10 | <link rel="import" href="/core/tracks/heading_track.html"> |
| 11 | <link rel="import" href="/core/fast_rect_renderer.html"> |
| 12 | <link rel="import" href="/core/draw_helpers.html"> |
| 13 | <link rel="import" href="/base/sorted_array_utils.html"> |
| 14 | <link rel="import" href="/base/ui.html"> |
| 15 | |
| 16 | <script> |
| 17 | 'use strict'; |
| 18 | |
| 19 | tv.exportTo('tv.c.tracks', function() { |
| 20 | |
| 21 | /** |
| 22 | * A track that displays an array of Rect objects. |
| 23 | * @constructor |
| 24 | * @extends {HeadingTrack} |
| 25 | */ |
| 26 | var RectTrack = tv.b.ui.define( |
| 27 | 'rect-track', tv.c.tracks.HeadingTrack); |
| 28 | |
| 29 | RectTrack.prototype = { |
| 30 | |
| 31 | __proto__: tv.c.tracks.HeadingTrack.prototype, |
| 32 | |
| 33 | decorate: function(viewport) { |
| 34 | tv.c.tracks.HeadingTrack.prototype.decorate.call(this, viewport); |
| 35 | this.classList.add('rect-track'); |
| 36 | this.asyncStyle_ = false; |
| 37 | this.rects_ = null; |
| 38 | }, |
| 39 | |
| 40 | get asyncStyle() { |
| 41 | return this.asyncStyle_; |
| 42 | }, |
| 43 | |
| 44 | set asyncStyle(v) { |
| 45 | this.asyncStyle_ = !!v; |
| 46 | }, |
| 47 | |
| 48 | get rects() { |
| 49 | return this.rects_; |
| 50 | }, |
| 51 | |
| 52 | set rects(rects) { |
| 53 | this.rects_ = rects || []; |
| 54 | this.invalidateDrawingContainer(); |
| 55 | }, |
| 56 | |
| 57 | get height() { |
| 58 | return window.getComputedStyle(this).height; |
| 59 | }, |
| 60 | |
| 61 | set height(height) { |
| 62 | this.style.height = height; |
| 63 | this.invalidateDrawingContainer(); |
| 64 | }, |
| 65 | |
| 66 | get hasVisibleContent() { |
| 67 | return this.rects_.length > 0; |
| 68 | }, |
| 69 | |
| 70 | getModelEventFromItem: function(rect) { |
| 71 | throw new Error('Not implemented.'); |
| 72 | }, |
| 73 | |
| 74 | draw: function(type, viewLWorld, viewRWorld) { |
| 75 | switch (type) { |
| 76 | case tv.c.tracks.DrawType.SLICE: |
| 77 | this.drawRects_(viewLWorld, viewRWorld); |
| 78 | break; |
| 79 | } |
| 80 | }, |
| 81 | |
| 82 | drawRects_: function(viewLWorld, viewRWorld) { |
| 83 | var ctx = this.context(); |
| 84 | |
| 85 | ctx.save(); |
| 86 | var bounds = this.getBoundingClientRect(); |
| 87 | tv.c.drawSlices( |
| 88 | ctx, |
| 89 | this.viewport.currentDisplayTransform, |
| 90 | viewLWorld, |
| 91 | viewRWorld, |
| 92 | bounds.height, |
| 93 | this.rects_, |
| 94 | this.asyncStyle_); |
| 95 | ctx.restore(); |
| 96 | |
| 97 | if (bounds.height <= 6) |
| 98 | return; |
| 99 | |
| 100 | var fontSize, yOffset; |
| 101 | if (bounds.height < 15) { |
| 102 | fontSize = 6; |
| 103 | yOffset = 1.0; |
| 104 | } else { |
| 105 | fontSize = 10; |
| 106 | yOffset = 2.5; |
| 107 | } |
| 108 | tv.c.drawLabels( |
| 109 | ctx, |
| 110 | this.viewport.currentDisplayTransform, |
| 111 | viewLWorld, |
| 112 | viewRWorld, |
| 113 | this.rects_, |
| 114 | this.asyncStyle_, |
| 115 | fontSize, |
| 116 | yOffset); |
| 117 | }, |
| 118 | |
| 119 | addEventsToTrackMap: function(eventToTrackMap) { |
| 120 | if (this.rects_ === undefined || this.rects_ === null) |
| 121 | return; |
| 122 | |
| 123 | this.rects_.forEach(function(rect) { |
| 124 | var event = this.getModelEventFromItem(rect); |
| 125 | if (event) |
| 126 | eventToTrackMap.addEvent(event, this); |
| 127 | }, this); |
| 128 | }, |
| 129 | |
| 130 | addIntersectingItemsInRangeToSelectionInWorldSpace: function( |
| 131 | loWX, hiWX, viewPixWidthWorld, selection) { |
| 132 | function onRect(rect) { |
| 133 | var event = this.getModelEventFromItem(rect); |
| 134 | if (event) |
| 135 | selection.push(event); |
| 136 | } |
| 137 | onRect = onRect.bind(this); |
| 138 | tv.b.iterateOverIntersectingIntervals(this.rects_, |
| 139 | function(x) { return x.start; }, |
| 140 | function(x) { return x.duration; }, |
| 141 | loWX, hiWX, |
| 142 | onRect); |
| 143 | }, |
| 144 | |
| 145 | /** |
| 146 | * Find the index for the given rect. |
| 147 | * @return {index} Index of the given rect, or undefined. |
| 148 | * @private |
| 149 | */ |
| 150 | indexOfRect_: function(rect) { |
| 151 | var index = tv.b.findLowIndexInSortedArray(this.rects_, |
| 152 | function(x) { return x.start; }, |
| 153 | rect.start); |
| 154 | while (index < this.rects_.length && |
| 155 | rect.start == this.rects_[index].start && |
| 156 | rect.colorId != this.rects_[index].colorId) { |
| 157 | index++; |
| 158 | } |
| 159 | return index < this.rects_.length ? index : undefined; |
| 160 | }, |
| 161 | |
| 162 | /** |
| 163 | * Add the item to the left or right of the provided event, if any, to the |
| 164 | * selection. |
| 165 | * @param {rect} The current rect. |
| 166 | * @param {Number} offset Number of rects away from the event to look. |
| 167 | * @param {Selection} selection The selection to add an event to, |
| 168 | * if found. |
| 169 | * @return {boolean} Whether an event was found. |
| 170 | * @private |
| 171 | */ |
| 172 | addItemNearToProvidedEventToSelection: function(event, offset, selection) { |
| 173 | var index = this.indexOfRect_(event); |
| 174 | if (index === undefined) |
| 175 | return false; |
| 176 | |
| 177 | var newIndex = index + offset; |
| 178 | if (newIndex < 0 || newIndex >= this.rects_.length) |
| 179 | return false; |
| 180 | |
| 181 | var event = this.rects_[newIndex]; |
| 182 | if (event) |
| 183 | selection.push(event); |
| 184 | return true; |
| 185 | }, |
| 186 | |
| 187 | addAllObjectsMatchingFilterToSelection: function(filter, selection) { |
| 188 | for (var i = 0; i < this.rects_.length; ++i) { |
| 189 | if (filter.matchSlice(this.rects_[i])) { |
| 190 | var event = this.getModelEventFromItem(this.rects_[i]); |
| 191 | if (event) |
| 192 | selection.push(event); |
| 193 | } |
| 194 | } |
| 195 | }, |
| 196 | |
| 197 | addClosestEventToSelection: function(worldX, worldMaxDist, loY, hiY, |
| 198 | selection) { |
| 199 | var rect = tv.b.findClosestIntervalInSortedIntervals( |
| 200 | this.rects_, |
| 201 | function(x) { return x.start; }, |
| 202 | function(x) { return x.end; }, |
| 203 | worldX, |
| 204 | worldMaxDist); |
| 205 | |
| 206 | if (rect) { |
| 207 | var event = this.getModelEventFromItem(rect); |
| 208 | if (event) |
| 209 | selection.push(event); |
| 210 | } |
| 211 | } |
| 212 | }; |
| 213 | |
| 214 | return { |
| 215 | RectTrack: RectTrack |
| 216 | }; |
| 217 | }); |
| 218 | </script> |