Commit | Line | Data |
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a7393a71 RK |
1 | /* This Source Code Form is subject to the terms of the Mozilla Public |
2 | * License, v. 2.0. If a copy of the MPL was not distributed with this file, | |
3 | * You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
23cd2dcc | 4 | |
ac6286bd | 5 | var gGLMapCanvas, gTrackCanvas, gTrackContext, gGeolocation; |
0dc9cd0d | 6 | var gDebug = false; |
23cd2dcc | 7 | |
b054bd48 RK |
8 | var gMinTrackAccuracy = 1000; // meters |
9 | var gTrackWidth = 2; // pixels | |
10 | var gTrackColor = "#FF0000"; | |
4b1d0915 RK |
11 | var gCurLocSize = 6; // pixels |
12 | var gCurLocColor = "#A00000"; | |
b054bd48 | 13 | |
b47b4a65 RK |
14 | var gMapStyles = { |
15 | // OSM tile usage policy: http://wiki.openstreetmap.org/wiki/Tile_usage_policy | |
55c4a0b7 | 16 | // Find some more OSM ones at http://wiki.openstreetmap.org/wiki/Slippy_map_tilenames#Tile_servers |
ca77d52d | 17 | // and http://wiki.openstreetmap.org/wiki/Tiles or http://wiki.openstreetmap.org/wiki/TMS |
b47b4a65 RK |
18 | osm_mapnik: |
19 | {name: "OpenStreetMap (Mapnik)", | |
a40d8348 | 20 | url: "https://[a-c].tile.openstreetmap.org/{z}/{x}/{y}.png", |
5a19ec68 | 21 | copyright: 'Map data and imagery © <a href="http://www.openstreetmap.org/">OpenStreetMap</a> contributors, <a href="http://www.openstreetmap.org/copyright">ODbL/CC-BY-SA</a>'}, |
14e6d3ad RK |
22 | osm_cyclemap: |
23 | {name: "Cycle Map (OSM)", | |
a40d8348 | 24 | url: "https://[a-c].tile.thunderforest.com/cycle/{z}/{x}/{y}.png", // "http://[a-c].tile.opencyclemap.org/cycle/{z}/{x}/{y}.png", |
5a19ec68 | 25 | copyright: 'Map data and imagery © <a href="http://www.openstreetmap.org/">OpenStreetMap</a> contributors, <a href="http://www.openstreetmap.org/copyright">ODbL/CC-BY-SA</a>'}, |
14e6d3ad RK |
26 | osm_transmap: |
27 | {name: "Transport Map (OSM)", | |
a40d8348 | 28 | url: "https://[a-c].tile.thunderforest.com/transport/{z}/{x}/{y}.png", // "http://[a-c].tile2.opencyclemap.org/transport/{z}/{x}/{y}.png", |
5a19ec68 | 29 | copyright: 'Map data and imagery © <a href="http://www.openstreetmap.org/">OpenStreetMap</a> contributors, <a href="http://www.openstreetmap.org/copyright">ODbL/CC-BY-SA</a>'}, |
ca77d52d RK |
30 | osm_germany: |
31 | {name: "OSM German Style", | |
a40d8348 | 32 | url: "http://[a-d].tile.openstreetmap.de/tiles/osmde/{z}/{x}/{y}.png", // https is not supported at all |
ca77d52d RK |
33 | copyright: 'Map data and imagery © <a href="http://www.openstreetmap.org/">OpenStreetMap</a> contributors, <a href="http://www.openstreetmap.org/copyright">ODbL/CC-BY-SA</a>'}, |
34 | // oepnvkarte: // XXX: toolserver.org does not support CORS at this time :( | |
35 | // {name: "ÖPNV-Karte (OSM)", | |
36 | // url: "http://toolserver.org/~cmarqu/hill/{z}/{x}/{y}.png", | |
37 | // copyright: 'Map data © <a href="http://www.openstreetmap.org/">OpenStreetMap</a> contributors, <a href="http://www.openstreetmap.org/copyright">ODbL/CC-BY-SA</a>, tiles by <a href="http://memomaps.de">MeMoMaps</a> under <a href="http://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>.'}, | |
b47b4a65 | 38 | mapquest_open: |
55c4a0b7 | 39 | {name: "MapQuest OSM", |
a40d8348 | 40 | url: "http://otile[1-4].mqcdn.com/tiles/1.0.0/osm/{z}/{x}/{y}.png", // https has wrong cert, akamai instead of mqcdn |
ca77d52d | 41 | copyright: 'Map data © <a href="http://www.openstreetmap.org/">OpenStreetMap</a> and contributors (<a href="http://www.openstreetmap.org/copyright">ODbL/CC-BY-SA</a>), tiles courtesy of <a href="http://www.mapquest.com/">MapQuest</a>.'}, |
55c4a0b7 RK |
42 | mapquest_aerial: |
43 | {name: "MapQuest Open Aerial", | |
68afcd96 | 44 | url: "http://otile[1-4].mqcdn.com/tiles/1.0.0/sat/{z}/{x}/{y}.jpg", |
5a19ec68 | 45 | copyright: 'Tiles Courtesy of <a href="http://www.mapquest.com/">MapQuest</a>, portions Courtesy NASA/JPL-Caltech and U.S. Depart. of Agriculture, Farm Service Agency.'}, |
ca77d52d RK |
46 | osm_hot: |
47 | {name: "OSM HOT style", | |
a40d8348 | 48 | url: "http://[a-c].tile.openstreetmap.fr/hot/{z}/{x}/{y}.png", // https has CAcert which doesn't work in browsers |
ca77d52d RK |
49 | copyright: 'Map data and imagery © <a href="http://www.openstreetmap.org/">OpenStreetMap</a> contributors, <a href="http://www.openstreetmap.org/copyright">ODbL/CC-BY-SA</a>'}, |
50 | // hikebike: // XXX: toolserver.org does not support CORS at this time :( | |
51 | // {name: "Hike and Bike (OSM)", | |
52 | // url: "http://toolserver.org/tiles/hikebike/{z}/{x}/{y}.png", | |
53 | // copyright: 'Map data and imagery © <a href="http://www.openstreetmap.org/">OpenStreetMap</a> contributors, <a href="http://www.openstreetmap.org/copyright">ODbL/CC-BY-SA</a>'}, | |
54 | stamen_toner: | |
a40d8348 | 55 | {name: "Stamen Toner (B+W)", // https has wrong cert, .ssl.fastly.net instead of .tile.stamen.com |
ca77d52d RK |
56 | url: "http://[a-c].tile.stamen.com/toner/{z}/{x}/{y}.jpg", |
57 | copyright: 'Map data © <a href="http://www.openstreetmap.org/">OpenStreetMap</a> contributors, <a href="http://www.openstreetmap.org/copyright">ODbL/CC-BY-SA</a>, tiles by <a href="http://stamen.com">Stamen Design</a>, under <a href="http://creativecommons.org/licenses/by/3.0">CC BY 3.0</a>.'}, | |
58 | stamen_terrain: | |
a40d8348 | 59 | {name: "Stamen Terrain (USA only)", // https has wrong cert, .ssl.fastly.net instead of .tile.stamen.com |
ca77d52d RK |
60 | url: "http://[a-c].tile.stamen.com/terrain/{z}/{x}/{y}.jpg", |
61 | copyright: 'Map data © <a href="http://www.openstreetmap.org/">OpenStreetMap</a> contributors, <a href="http://www.openstreetmap.org/copyright">ODbL/CC-BY-SA</a>, tiles by <a href="http://stamen.com">Stamen Design</a>, under <a href="http://creativecommons.org/licenses/by/3.0">CC BY 3.0</a>.'}, | |
62 | stamen_watercolor: | |
a40d8348 | 63 | {name: "Stamen Watercolor (artistic)", // https has wrong cert, .ssl.fastly.net instead of .tile.stamen.com |
ca77d52d RK |
64 | url: "http://[a-c].tile.stamen.com/watercolor/{z}/{x}/{y}.jpg", |
65 | copyright: 'Map data © <a href="http://www.openstreetmap.org/">OpenStreetMap</a> contributors, <a href="http://www.openstreetmap.org/copyright">ODbL/CC-BY-SA</a>, tiles by <a href="http://stamen.com">Stamen Design</a>, under <a href="http://creativecommons.org/licenses/by/3.0">CC BY 3.0</a>.'}, | |
b47b4a65 | 66 | }; |
23cd2dcc RK |
67 | |
68 | var gLastMouseX = 0; | |
69 | var gLastMouseY = 0; | |
70 | ||
b395419b | 71 | var gLoadingTile; |
23cd2dcc | 72 | |
3610c22d RK |
73 | var gMapPrefsLoaded = false; |
74 | ||
23cd2dcc | 75 | var gDragging = false; |
517c0099 | 76 | var gDragTouchID, gPinchStartWidth; |
23cd2dcc | 77 | |
55c4a0b7 RK |
78 | var gGeoWatchID; |
79 | var gTrack = []; | |
14e6d3ad | 80 | var gLastTrackPoint, gLastDrawnPoint; |
05c21757 | 81 | var gCenterPosition = true; |
55c4a0b7 | 82 | |
b054bd48 RK |
83 | var gCurPosMapCache; |
84 | ||
b47b4a65 | 85 | function initMap() { |
4b12da3a | 86 | gGeolocation = navigator.geolocation; |
ac6286bd RK |
87 | // Set up canvas context. |
88 | gGLMapCanvas = document.getElementById("map"); | |
ecde0af2 RK |
89 | try { |
90 | // Try to grab the standard context. If it fails, fallback to experimental. | |
91 | // We also try to tell it we do not need a depth buffer. | |
edc3be71 RK |
92 | gMap.gl = gGLMapCanvas.getContext("webgl", {depth: false}) || |
93 | gGLMapCanvas.getContext("experimental-webgl", {depth: false}); | |
ecde0af2 RK |
94 | } |
95 | catch(e) {} | |
edc3be71 | 96 | if (!gMap.gl) { |
16e4f664 | 97 | // If we don't have a GL context, give up now |
ecde0af2 | 98 | showGLWarningDialog(); |
edc3be71 | 99 | gMap.gl = null; |
ecde0af2 | 100 | } |
16e4f664 RK |
101 | else { |
102 | // GL context can be lost at any time, handle that. | |
103 | // See http://www.khronos.org/webgl/wiki/HandlingContextLost | |
104 | gGLMapCanvas.addEventListener("webglcontextlost", | |
105 | gMap.handleContextLost, false); | |
106 | gGLMapCanvas.addEventListener("webglcontextrestored", | |
107 | gMap.handleContextRestored, false); | |
108 | } | |
4b1d0915 RK |
109 | gTrackCanvas = document.getElementById("track"); |
110 | gTrackContext = gTrackCanvas.getContext("2d"); | |
23cd2dcc | 111 | |
4b12da3a RK |
112 | //gDebug = true; |
113 | if (gDebug) { | |
114 | gGeolocation = geofake; | |
115 | var hiddenList = document.getElementsByClassName("debugHide"); | |
116 | // last to first - list of elements with that class is changing! | |
117 | for (var i = hiddenList.length - 1; i >= 0; i--) { | |
118 | hiddenList[i].classList.remove("debugHide"); | |
119 | } | |
120 | } | |
121 | ||
edc3be71 | 122 | gAction.addEventListener("prefload-done", gMap.initGL, false); |
ecde0af2 | 123 | |
582d50fc RK |
124 | console.log("map vars set, loading prefs..."); |
125 | loadPrefs(); | |
126 | } | |
b395419b | 127 | |
582d50fc RK |
128 | function loadPrefs(aEvent) { |
129 | if (aEvent && aEvent.type == "prefs-step") { | |
130 | console.log("wait: " + gWaitCounter); | |
131 | if (gWaitCounter == 0) { | |
132 | gAction.removeEventListener(aEvent.type, loadPrefs, false); | |
133 | gMapPrefsLoaded = true; | |
134 | console.log("prefs loaded."); | |
135 | ||
136 | gTrackCanvas.addEventListener("mouseup", mapEvHandler, false); | |
137 | gTrackCanvas.addEventListener("mousemove", mapEvHandler, false); | |
138 | gTrackCanvas.addEventListener("mousedown", mapEvHandler, false); | |
139 | gTrackCanvas.addEventListener("mouseout", mapEvHandler, false); | |
140 | ||
141 | gTrackCanvas.addEventListener("touchstart", mapEvHandler, false); | |
142 | gTrackCanvas.addEventListener("touchmove", mapEvHandler, false); | |
143 | gTrackCanvas.addEventListener("touchend", mapEvHandler, false); | |
144 | gTrackCanvas.addEventListener("touchcancel", mapEvHandler, false); | |
145 | gTrackCanvas.addEventListener("touchleave", mapEvHandler, false); | |
146 | ||
147 | gTrackCanvas.addEventListener("wheel", mapEvHandler, false); | |
148 | ||
149 | document.getElementById("body").addEventListener("keydown", mapEvHandler, false); | |
150 | ||
5dd2ab70 RK |
151 | document.addEventListener("visibilitychange", visibilityEvHandler, false); |
152 | ||
d7310ee2 | 153 | console.log("Events added."); |
582d50fc | 154 | |
decacd7f | 155 | console.log("Init loading tile..."); |
582d50fc | 156 | gLoadingTile = new Image(); |
582d50fc | 157 | gLoadingTile.onload = function() { |
decacd7f | 158 | console.log("Loading tile loaded."); |
ecde0af2 | 159 | var throwEv = new CustomEvent("prefload-done"); |
582d50fc RK |
160 | gAction.dispatchEvent(throwEv); |
161 | }; | |
decacd7f RK |
162 | console.log("Set loading tile..."); |
163 | gLoadingTile.src = "style/loading.png"; | |
582d50fc RK |
164 | } |
165 | } | |
166 | else { | |
167 | if (aEvent) | |
168 | gAction.removeEventListener(aEvent.type, loadPrefs, false); | |
169 | gAction.addEventListener("prefs-step", loadPrefs, false); | |
170 | gWaitCounter++; | |
ae9e33a2 RK |
171 | gPrefs.get("active_map_style", function(aValue) { |
172 | if (aValue && gMapStyles[aValue]) { | |
173 | gMap.activeMap = aValue; | |
174 | } | |
33a97b69 RK |
175 | else { |
176 | gMap.activeMap = "osm_mapnik"; | |
177 | } | |
178 | document.getElementById("mapSelector").value = gMap.activeMap; | |
179 | document.getElementById("copyright").innerHTML = | |
180 | gMapStyles[gMap.activeMap].copyright; | |
ae9e33a2 RK |
181 | gWaitCounter--; |
182 | var throwEv = new CustomEvent("prefs-step"); | |
183 | gAction.dispatchEvent(throwEv); | |
184 | }); | |
185 | gWaitCounter++; | |
582d50fc | 186 | gPrefs.get("position", function(aValue) { |
ac6286bd | 187 | if (aValue && aValue.x && aValue.y && aValue.z) { |
dda55132 | 188 | gMap.pos = aValue; |
582d50fc | 189 | } |
df81068a RK |
190 | gWaitCounter--; |
191 | var throwEv = new CustomEvent("prefs-step"); | |
192 | gAction.dispatchEvent(throwEv); | |
582d50fc RK |
193 | }); |
194 | gWaitCounter++; | |
195 | gPrefs.get("center_map", function(aValue) { | |
ae9e33a2 | 196 | if (aValue === undefined) { |
582d50fc | 197 | document.getElementById("centerCheckbox").checked = true; |
ae9e33a2 RK |
198 | } |
199 | else { | |
582d50fc | 200 | document.getElementById("centerCheckbox").checked = aValue; |
ae9e33a2 | 201 | } |
582d50fc RK |
202 | setCentering(document.getElementById("centerCheckbox")); |
203 | gWaitCounter--; | |
204 | var throwEv = new CustomEvent("prefs-step"); | |
205 | gAction.dispatchEvent(throwEv); | |
206 | }); | |
207 | gWaitCounter++; | |
208 | gPrefs.get("tracking_enabled", function(aValue) { | |
ae9e33a2 | 209 | if (aValue === undefined) { |
582d50fc | 210 | document.getElementById("trackCheckbox").checked = true; |
ae9e33a2 RK |
211 | } |
212 | else { | |
582d50fc | 213 | document.getElementById("trackCheckbox").checked = aValue; |
ae9e33a2 | 214 | } |
582d50fc RK |
215 | gWaitCounter--; |
216 | var throwEv = new CustomEvent("prefs-step"); | |
217 | gAction.dispatchEvent(throwEv); | |
218 | }); | |
219 | gWaitCounter++; | |
cef88e12 RK |
220 | var trackLoadStarted = false; |
221 | var redrawBase = 100; | |
6ddefbf9 RK |
222 | gTrackStore.getListStepped(function(aTPoint) { |
223 | if (aTPoint) { | |
224 | // Add in front and return new length. | |
225 | var tracklen = gTrack.unshift(aTPoint); | |
7a076538 RK |
226 | // Redraw track periodically, larger distance the longer it gets |
227 | // (but clamped to the first value over a certain limit). | |
fdaf08db RK |
228 | // Initial paint will do initial track drawing. |
229 | if (tracklen % redrawBase == 0) { | |
6ddefbf9 | 230 | drawTrack(); |
7a076538 RK |
231 | if (redrawBase < 1000) { |
232 | redrawBase = tracklen; | |
233 | } | |
fdaf08db | 234 | } |
6ddefbf9 RK |
235 | } |
236 | else { | |
237 | // Last point received. | |
238 | drawTrack(); | |
239 | } | |
240 | if (!trackLoadStarted) { | |
241 | // We have the most recent point, if present, rest will load async. | |
242 | trackLoadStarted = true; | |
243 | gWaitCounter--; | |
244 | var throwEv = new CustomEvent("prefs-step"); | |
245 | gAction.dispatchEvent(throwEv); | |
582d50fc | 246 | } |
582d50fc RK |
247 | }); |
248 | } | |
23cd2dcc RK |
249 | } |
250 | ||
edc3be71 RK |
251 | var gMap = { |
252 | gl: null, | |
253 | glShaderProgram: null, | |
254 | glVertexPositionAttr: null, | |
255 | glTextureCoordAttr: null, | |
256 | glResolutionAttr: null, | |
257 | glMapTexture: null, | |
e8525b46 | 258 | glTextures: {}, |
d6ff6891 RK |
259 | glTxCleanIntervalID: null, |
260 | glTexturesPerZoomLevel: 0, | |
edc3be71 | 261 | |
dda55132 RK |
262 | activeMap: "osm_mapnik", |
263 | tileSize: 256, | |
264 | maxZoom: 18, // The minimum is 0. | |
265 | zoomFactor: null, | |
266 | pos: { | |
267 | x: 35630000.0, // Current position in the map in pixels at the maximum zoom level (18) | |
268 | y: 23670000.0, // The range is 0-67108864 (2^gMap.maxZoom * gMap.tileSize) | |
269 | z: 5 // This could be fractional if supported being between zoom levels. | |
270 | }, | |
d6ff6891 RK |
271 | baseDim: { // Map width, height and tile size in level 18 pixels. |
272 | wid: null, | |
273 | ht: null, | |
274 | tsize: null, | |
275 | }, | |
dda55132 | 276 | |
ac6286bd RK |
277 | get width() { return gMap.gl ? gMap.gl.drawingBufferWidth : gGLMapCanvas.width; }, |
278 | get height() { return gMap.gl ? gMap.gl.drawingBufferHeight : gGLMapCanvas.height; }, | |
279 | ||
edc3be71 RK |
280 | getVertShaderSource: function() { |
281 | return 'attribute vec2 aVertexPosition;\n' + | |
282 | 'attribute vec2 aTextureCoord;\n\n' + | |
283 | 'uniform vec2 uResolution;\n\n' + | |
284 | 'varying highp vec2 vTextureCoord;\n\n' + | |
285 | 'void main(void) {\n' + | |
286 | // convert the rectangle from pixels to -1.0 to +1.0 (clipspace) 0.0 to 1.0 | |
287 | ' vec2 clipSpace = aVertexPosition * 2.0 / uResolution - 1.0;\n' + | |
288 | ' gl_Position = vec4(clipSpace * vec2(1, -1), 0, 1);\n' + | |
289 | ' vTextureCoord = aTextureCoord;\n' + | |
290 | '}'; }, | |
d7310ee2 | 291 | getFragShaderSource: function() { |
edc3be71 RK |
292 | return 'varying highp vec2 vTextureCoord;\n\n' + |
293 | 'uniform sampler2D uImage;\n\n' + | |
294 | 'void main(void) {\n' + | |
295 | ' gl_FragColor = texture2D(uImage, vTextureCoord);\n' + | |
296 | '}'; }, | |
297 | ||
298 | initGL: function() { | |
299 | // When called from the event listener, the "this" reference doesn't work, so use the object name. | |
b3a9fc52 | 300 | console.log("Initializing WebGL..."); |
edc3be71 RK |
301 | if (gMap.gl) { |
302 | gMap.gl.viewport(0, 0, gMap.gl.drawingBufferWidth, gMap.gl.drawingBufferHeight); | |
303 | gMap.gl.clearColor(0.0, 0.0, 0.0, 0.5); // Set clear color to black, fully opaque. | |
304 | gMap.gl.clear(gMap.gl.COLOR_BUFFER_BIT|gMap.gl.DEPTH_BUFFER_BIT); // Clear the color. | |
305 | ||
306 | // Create and initialize the shaders. | |
b3a9fc52 | 307 | console.log("Create and compile shaders..."); |
edc3be71 RK |
308 | var vertShader = gMap.gl.createShader(gMap.gl.VERTEX_SHADER); |
309 | var fragShader = gMap.gl.createShader(gMap.gl.FRAGMENT_SHADER); | |
310 | gMap.gl.shaderSource(vertShader, gMap.getVertShaderSource()); | |
311 | // Compile the shader program. | |
312 | gMap.gl.compileShader(vertShader); | |
313 | // See if it compiled successfully. | |
314 | if (!gMap.gl.getShaderParameter(vertShader, gMap.gl.COMPILE_STATUS)) { | |
315 | console.log("An error occurred compiling the vertex shader: " + gMap.gl.getShaderInfoLog(vertShader)); | |
316 | return null; | |
317 | } | |
318 | gMap.gl.shaderSource(fragShader, gMap.getFragShaderSource()); | |
319 | // Compile the shader program. | |
320 | gMap.gl.compileShader(fragShader); | |
321 | // See if it compiled successfully. | |
322 | if (!gMap.gl.getShaderParameter(fragShader, gMap.gl.COMPILE_STATUS)) { | |
323 | console.log("An error occurred compiling the fragment shader: " + gMap.gl.getShaderInfoLog(fragShader)); | |
324 | return null; | |
325 | } | |
ecde0af2 | 326 | |
b3a9fc52 | 327 | console.log("Create and link shader program..."); |
edc3be71 RK |
328 | gMap.glShaderProgram = gMap.gl.createProgram(); |
329 | gMap.gl.attachShader(gMap.glShaderProgram, vertShader); | |
330 | gMap.gl.attachShader(gMap.glShaderProgram, fragShader); | |
331 | gMap.gl.linkProgram(gMap.glShaderProgram); | |
332 | // If creating the shader program failed, alert | |
333 | if (!gMap.gl.getProgramParameter(gMap.glShaderProgram, gMap.gl.LINK_STATUS)) { | |
334 | alert("Unable to initialize the shader program."); | |
335 | } | |
336 | gMap.gl.useProgram(gMap.glShaderProgram); | |
337 | // Get locations of the attributes. | |
338 | gMap.glVertexPositionAttr = gMap.gl.getAttribLocation(gMap.glShaderProgram, "aVertexPosition"); | |
339 | gMap.glTextureCoordAttr = gMap.gl.getAttribLocation(gMap.glShaderProgram, "aTextureCoord"); | |
340 | gMap.glResolutionAttr = gMap.gl.getUniformLocation(gMap.glShaderProgram, "uResolution"); | |
341 | ||
b3a9fc52 | 342 | console.log("Set up vertex buffer..."); |
edc3be71 RK |
343 | var tileVerticesBuffer = gMap.gl.createBuffer(); |
344 | gMap.gl.bindBuffer(gMap.gl.ARRAY_BUFFER, tileVerticesBuffer); | |
345 | // The vertices are the coordinates of the corner points of the square. | |
346 | var vertices = [ | |
347 | 0.0, 0.0, | |
348 | 1.0, 0.0, | |
349 | 0.0, 1.0, | |
350 | 0.0, 1.0, | |
351 | 1.0, 0.0, | |
352 | 1.0, 1.0, | |
353 | ]; | |
354 | gMap.gl.bufferData(gMap.gl.ARRAY_BUFFER, new Float32Array(vertices), gMap.gl.STATIC_DRAW); | |
355 | gMap.gl.enableVertexAttribArray(gMap.glTextureCoordAttr); | |
356 | gMap.gl.vertexAttribPointer(gMap.glTextureCoordAttr, 2, gMap.gl.FLOAT, false, 0, 0); | |
357 | ||
dc047338 | 358 | gMap.loadImageToTexture(gLoadingTile, getTileKey("loading", {x: 0, y: 0, z: 0})); |
edc3be71 RK |
359 | |
360 | gMap.gl.uniform2f(gMap.glResolutionAttr, gGLMapCanvas.width, gGLMapCanvas.height); | |
361 | ||
362 | // Create a buffer for the position of the rectangle corners. | |
b3a9fc52 | 363 | console.log("Set up coord buffer..."); |
edc3be71 RK |
364 | var mapVerticesTextureCoordBuffer = gMap.gl.createBuffer(); |
365 | gMap.gl.bindBuffer(gMap.gl.ARRAY_BUFFER, mapVerticesTextureCoordBuffer); | |
366 | gMap.gl.enableVertexAttribArray(gMap.glVertexPositionAttr); | |
367 | gMap.gl.vertexAttribPointer(gMap.glVertexPositionAttr, 2, gMap.gl.FLOAT, false, 0, 0); | |
d6ff6891 RK |
368 | |
369 | // Call texture cleaning every 30 seconds, for now (is 60 better?). | |
370 | gMap.glTxCleanIntervalID = window.setInterval(gMap.cleanTextures, 30 * 1000); | |
ecde0af2 | 371 | } |
edc3be71 | 372 | |
16e4f664 RK |
373 | if (!gAppInitDone) { |
374 | // We may be called when context was lost and destroyed, | |
375 | // only send event when we are in app startup | |
376 | // (gAppInitDone is set to true right after we return this event). | |
377 | var throwEv = new CustomEvent("mapinit-done"); | |
378 | gAction.dispatchEvent(throwEv); | |
379 | } | |
edc3be71 RK |
380 | }, |
381 | ||
0f6678fa RK |
382 | draw: function() { |
383 | gMap.assembleGL(); | |
ac6286bd | 384 | drawTrack(); |
dda55132 | 385 | }, |
ecde0af2 | 386 | |
0f6678fa | 387 | assembleGL: function() { |
dda55132 | 388 | if (!gMap.gl) { return; } |
dda55132 RK |
389 | |
390 | document.getElementById("zoomLevel").textContent = gMap.pos.z; | |
391 | gMap.zoomFactor = Math.pow(2, gMap.maxZoom - gMap.pos.z); | |
d6ff6891 RK |
392 | gMap.baseDim.wid = gMap.gl.drawingBufferWidth * gMap.zoomFactor; |
393 | gMap.baseDim.ht = gMap.gl.drawingBufferHeight * gMap.zoomFactor; | |
394 | gMap.baseDim.tsize = gMap.tileSize * gMap.zoomFactor; | |
dda55132 | 395 | |
d6ff6891 RK |
396 | var xMin = gMap.pos.x - gMap.baseDim.wid / 2; // Corners of the window in level 18 pixels. |
397 | var yMin = gMap.pos.y - gMap.baseDim.ht / 2; | |
398 | var xMax = gMap.pos.x + gMap.baseDim.wid / 2; | |
399 | var yMax = gMap.pos.y + gMap.baseDim.ht / 2; | |
dda55132 RK |
400 | |
401 | if (gMapPrefsLoaded && mainDB) | |
402 | gPrefs.set("position", gMap.pos); | |
403 | ||
dda55132 | 404 | // Go through all the tiles in the map, find out if to draw them and do so. |
d6ff6891 RK |
405 | for (var x = Math.floor(xMin / gMap.baseDim.tsize); x < Math.ceil(xMax / gMap.baseDim.tsize); x++) { |
406 | for (var y = Math.floor(yMin / gMap.baseDim.tsize); y < Math.ceil(yMax / gMap.baseDim.tsize); y++) { | |
0f6678fa RK |
407 | // Only go to loading step if we haven't loaded the texture. |
408 | var coords = {x: x, y: y, z: gMap.pos.z}; | |
409 | var tileKey = getTileKey(gMap.activeMap, normalizeCoords(coords)); | |
dc047338 | 410 | if (!gMap.glTextures[tileKey]) { |
dda55132 | 411 | // Initiate loading/drawing of the actual tile. |
0f6678fa | 412 | gTileService.get(gMap.activeMap, coords, |
b9707ee0 | 413 | function(aImage, aStyle, aCoords, aTileKey) { |
0f6678fa | 414 | // Only actually load if this still applies for the current view. |
dda55132 | 415 | if ((aStyle == gMap.activeMap) && (aCoords.z == gMap.pos.z)) { |
0f6678fa RK |
416 | var URL = window.URL; |
417 | var imgURL = URL.createObjectURL(aImage); | |
418 | var imgObj = new Image(); | |
419 | imgObj.onload = function() { | |
dc047338 | 420 | gMap.loadImageToTexture(imgObj, aTileKey); |
5dd2ab70 RK |
421 | if (document.hidden != true) { // Only draw if we're actually visible. |
422 | window.requestAnimationFrame(function(aTimestamp) { gMap.drawGL() }); | |
423 | } | |
0f6678fa | 424 | URL.revokeObjectURL(imgURL); |
dda55132 | 425 | } |
0f6678fa | 426 | imgObj.src = imgURL; |
dda55132 RK |
427 | } |
428 | }); | |
dda55132 RK |
429 | } |
430 | } | |
431 | } | |
5dd2ab70 RK |
432 | if (document.hidden != true) { // Only draw if we're actually visible. |
433 | window.requestAnimationFrame(function(aTimestamp) { gMap.drawGL() }); | |
434 | } | |
b9707ee0 RK |
435 | }, |
436 | ||
437 | drawGL: function() { | |
d6ff6891 RK |
438 | var xMin = gMap.pos.x - gMap.baseDim.wid / 2; // Corners of the window in level 18 pixels. |
439 | var yMin = gMap.pos.y - gMap.baseDim.ht / 2; | |
440 | var xMax = gMap.pos.x + gMap.baseDim.wid / 2; | |
441 | var yMax = gMap.pos.y + gMap.baseDim.ht / 2; | |
b9707ee0 | 442 | |
b9707ee0 | 443 | // Go through all the tiles in the map, find out if to draw them and do so. |
d6ff6891 RK |
444 | for (var x = Math.floor(xMin / gMap.baseDim.tsize); x < Math.ceil(xMax / gMap.baseDim.tsize); x++) { |
445 | for (var y = Math.floor(yMin / gMap.baseDim.tsize); y < Math.ceil(yMax / gMap.baseDim.tsize); y++) { | |
446 | // Rounding the pixel offsets ensures we position the tiles precisely. | |
447 | var xoff = Math.round((x * gMap.baseDim.tsize - xMin) / gMap.zoomFactor); | |
448 | var yoff = Math.round((y * gMap.baseDim.tsize - yMin) / gMap.zoomFactor); | |
dc047338 | 449 | // Draw the tile, first find out the actual texture to use. |
b9707ee0 RK |
450 | var norm = normalizeCoords({x: x, y: y, z: gMap.pos.z}); |
451 | var tileKey = getTileKey(gMap.activeMap, norm); | |
dc047338 RK |
452 | if (!gMap.glTextures[tileKey]) { |
453 | tileKey = getTileKey("loading", {x: 0, y: 0, z: 0}); | |
454 | } | |
455 | gMap.drawTileGL(xoff, yoff, tileKey); | |
b9707ee0 RK |
456 | } |
457 | } | |
dda55132 | 458 | }, |
edc3be71 | 459 | |
ac6286bd RK |
460 | resizeAndDraw: function() { |
461 | var viewportWidth = Math.min(window.innerWidth, window.outerWidth); | |
462 | var viewportHeight = Math.min(window.innerHeight, window.outerHeight); | |
463 | if (gGLMapCanvas && gTrackCanvas) { | |
464 | gGLMapCanvas.width = viewportWidth; | |
465 | gGLMapCanvas.height = viewportHeight; | |
466 | gTrackCanvas.width = viewportWidth; | |
467 | gTrackCanvas.height = viewportHeight; | |
468 | if (gMap.gl) { | |
469 | // Size viewport to canvas size. | |
470 | gMap.gl.viewport(0, 0, gMap.gl.drawingBufferWidth, gMap.gl.drawingBufferHeight); | |
471 | // Clear the color. | |
472 | gMap.gl.clear(gMap.gl.COLOR_BUFFER_BIT); | |
473 | // Make sure the vertex shader get the right resolution. | |
474 | gMap.gl.uniform2f(gMap.glResolutionAttr, gGLMapCanvas.width, gGLMapCanvas.height); | |
d6ff6891 RK |
475 | // Prepare recalculation of textures to keep for one zoom level. |
476 | gMap.glTexturesPerZoomLevel = 0; | |
ac6286bd RK |
477 | } |
478 | gMap.draw(); | |
479 | showUI(); | |
480 | } | |
dda55132 RK |
481 | }, |
482 | ||
dc047338 | 483 | drawTileGL: function(aLeft, aRight, aTileKey) { |
b9707ee0 | 484 | gMap.gl.activeTexture(gMap.gl.TEXTURE0); |
dc047338 | 485 | gMap.gl.bindTexture(gMap.gl.TEXTURE_2D, gMap.glTextures[aTileKey]); |
b9707ee0 RK |
486 | // Set uImage to refer to TEXTURE0 |
487 | gMap.gl.uniform1i(gMap.gl.getUniformLocation(gMap.glShaderProgram, "uImage"), 0); | |
dda55132 RK |
488 | var x_start = aLeft; |
489 | var i_width = gMap.tileSize; | |
490 | var y_start = aRight; | |
491 | var i_height = gMap.tileSize; | |
edc3be71 RK |
492 | var textureCoordinates = [ |
493 | x_start, y_start, | |
494 | x_start + i_width, y_start, | |
495 | x_start, y_start + i_height, | |
496 | x_start, y_start + i_height, | |
497 | x_start + i_width, y_start, | |
498 | x_start + i_width, y_start + i_height, | |
499 | ]; | |
500 | gMap.gl.bufferData(gMap.gl.ARRAY_BUFFER, new Float32Array(textureCoordinates), gMap.gl.STATIC_DRAW); | |
edc3be71 RK |
501 | |
502 | // There are 6 indices in textureCoordinates. | |
503 | gMap.gl.drawArrays(gMap.gl.TRIANGLES, 0, 6); | |
e8525b46 RK |
504 | }, |
505 | ||
dc047338 | 506 | loadImageToTexture: function(aImage, aTileKey) { |
e8525b46 | 507 | // Create and bind texture. |
dc047338 RK |
508 | gMap.glTextures[aTileKey] = gMap.gl.createTexture(); |
509 | gMap.gl.bindTexture(gMap.gl.TEXTURE_2D, gMap.glTextures[aTileKey]); | |
e8525b46 RK |
510 | // Set params for how the texture minifies and magnifies (wrap params are not needed as we're power-of-two). |
511 | gMap.gl.texParameteri(gMap.gl.TEXTURE_2D, gMap.gl.TEXTURE_MIN_FILTER, gMap.gl.NEAREST); | |
512 | gMap.gl.texParameteri(gMap.gl.TEXTURE_2D, gMap.gl.TEXTURE_MAG_FILTER, gMap.gl.NEAREST); | |
513 | // Upload the image into the texture. | |
514 | gMap.gl.texImage2D(gMap.gl.TEXTURE_2D, 0, gMap.gl.RGBA, gMap.gl.RGBA, gMap.gl.UNSIGNED_BYTE, aImage); | |
515 | }, | |
d6ff6891 RK |
516 | |
517 | cleanTextures: function() { | |
518 | // Get rid of unneeded textures to save memory. | |
519 | // TODO: Be less aggressive, maybe keep neighboring zoom levels (but x/y coords there are zoom-specific). | |
520 | if (!gMap.glTexturesPerZoomLevel) { | |
521 | // Calculate how many textures we need to keep for one zoom level. | |
522 | // ceil(width/size) gives us the minimum, keep one on either side as well. | |
523 | gMap.glTexturesPerZoomLevel = | |
524 | Math.ceil(gMap.gl.drawingBufferWidth / gMap.tileSize + 2) * | |
525 | Math.ceil(gMap.gl.drawingBufferHeight / gMap.tileSize + 2); | |
526 | console.log("Keeping " + gMap.glTexturesPerZoomLevel + " textures per level"); | |
527 | } | |
528 | if (Object.keys(gMap.glTextures).length > gMap.glTexturesPerZoomLevel) { | |
529 | console.log("Cleaning textures... (have " + Object.keys(gMap.glTextures).length + " atm)"); | |
530 | ||
531 | // Find coordinate ranges for tiles to keep. | |
532 | var tMin = normalizeCoords({x: Math.floor((gMap.pos.x - gMap.baseDim.wid / 2) / gMap.baseDim.tsize) - 1, | |
533 | y: Math.floor((gMap.pos.y - gMap.baseDim.ht / 2) / gMap.baseDim.tsize) - 1, | |
534 | z: gMap.pos.z}); | |
535 | var tMax = normalizeCoords({x: Math.ceil((gMap.pos.x + gMap.baseDim.wid / 2) / gMap.baseDim.tsize) + 1, | |
536 | y: Math.ceil((gMap.pos.y + gMap.baseDim.ht / 2) / gMap.baseDim.tsize) + 1, | |
537 | z: gMap.pos.z}); | |
538 | console.log("In range: " + tMin.x + "," + tMin.y + "," + tMin.z + " - " + tMax.x + "," + tMax.y + "," + tMax.z); | |
bb752fc4 RK |
539 | for (var tileKey in gMap.glTextures) { |
540 | var keyMatches = tileKey.match(/([^:]+)::(\d+),(\d+),(\d+)/); | |
d6ff6891 RK |
541 | if (keyMatches && keyMatches[1] != "loading") { |
542 | var txData = { | |
543 | style: keyMatches[1], | |
544 | x: keyMatches[2], | |
545 | y: keyMatches[3], | |
546 | z: keyMatches[4], | |
547 | } | |
548 | var delTx = false; | |
549 | if (txData.style != gMap.activeMap) { delTx = true; console.log("Different map style: " + txData.style); } | |
550 | if (!delTx && (txData.z < tMin.z || txData.z > tMax.z)) { delTx = true; console.log("Out-of-range zoom: " + txData.z); } | |
551 | if (tMin.x < tMax.x) { | |
552 | if (!delTx && (txData.x < tMin.x || txData.x > tMax.x)) { delTx = true; console.log("Out-of-range X: " + txData.x); } | |
553 | } | |
554 | else { | |
555 | // We are crossing over the 0 coordinate! | |
556 | if (!delTx && (txData.x < tMin.x && txData.x > tMax.x)) { delTx = true; console.log("Out-of-range X: " + txData.x); } | |
557 | } | |
558 | if (tMin.y < tMax.y) { | |
559 | if (!delTx && (txData.y < tMin.y || txData.y > tMax.y)) { delTx = true; console.log("Out-of-range Y: " + txData.y); } | |
560 | } | |
561 | else { | |
562 | // We are crossing over the 0 coordinate! | |
563 | if (!delTx && (txData.y < tMin.y && txData.y > tMax.y)) { delTx = true; console.log("Out-of-range Y: " + txData.y); } | |
564 | } | |
565 | if (delTx) { | |
566 | // Delete texture from GL and from the array we are holding. | |
bb752fc4 RK |
567 | gMap.gl.deleteTexture(gMap.glTextures[tileKey]); |
568 | delete gMap.glTextures[tileKey]; | |
d6ff6891 RK |
569 | } |
570 | } | |
571 | } | |
572 | console.log("Cleaning complete, " + Object.keys(gMap.glTextures).length + " textures left)"); | |
d6ff6891 RK |
573 | } |
574 | }, | |
16e4f664 RK |
575 | |
576 | handleContextLost: function(event) { | |
577 | event.preventDefault(); | |
578 | // GL context is gone, let's reset everything that depends on it. | |
579 | clearInterval(gMap.glTxCleanIntervalID); | |
580 | gMap.glTextures = {}; | |
581 | }, | |
582 | ||
583 | handleContextRestored: function(event) { | |
584 | // When GL context is back, init GL again and draw. | |
585 | gMap.initGL(); | |
586 | gMap.draw(); | |
587 | }, | |
ecde0af2 RK |
588 | } |
589 | ||
b5e49b95 RK |
590 | // Using scale(x, y) together with drawing old data on scaled canvas would be an improvement for zooming. |
591 | // See https://developer.mozilla.org/en-US/docs/Canvas_tutorial/Transformations#Scaling | |
592 | ||
23cd2dcc | 593 | function zoomIn() { |
dda55132 RK |
594 | if (gMap.pos.z < gMap.maxZoom) { |
595 | gMap.pos.z++; | |
ac6286bd | 596 | gMap.draw(); |
23cd2dcc RK |
597 | } |
598 | } | |
599 | ||
600 | function zoomOut() { | |
dda55132 RK |
601 | if (gMap.pos.z > 0) { |
602 | gMap.pos.z--; | |
ac6286bd | 603 | gMap.draw(); |
23cd2dcc RK |
604 | } |
605 | } | |
606 | ||
1222624d RK |
607 | function zoomTo(aTargetLevel) { |
608 | aTargetLevel = parseInt(aTargetLevel); | |
dda55132 RK |
609 | if (aTargetLevel >= 0 && aTargetLevel <= gMap.maxZoom) { |
610 | gMap.pos.z = aTargetLevel; | |
ac6286bd | 611 | gMap.draw(); |
1222624d RK |
612 | } |
613 | } | |
614 | ||
55c4a0b7 | 615 | function gps2xy(aLatitude, aLongitude) { |
dda55132 | 616 | var maxZoomFactor = Math.pow(2, gMap.maxZoom) * gMap.tileSize; |
55c4a0b7 RK |
617 | var convLat = aLatitude * Math.PI / 180; |
618 | var rawY = (1 - Math.log(Math.tan(convLat) + | |
619 | 1 / Math.cos(convLat)) / Math.PI) / 2 * maxZoomFactor; | |
620 | var rawX = (aLongitude + 180) / 360 * maxZoomFactor; | |
621 | return {x: Math.round(rawX), | |
622 | y: Math.round(rawY)}; | |
623 | } | |
624 | ||
625 | function xy2gps(aX, aY) { | |
dda55132 | 626 | var maxZoomFactor = Math.pow(2, gMap.maxZoom) * gMap.tileSize; |
55c4a0b7 RK |
627 | var n = Math.PI - 2 * Math.PI * aY / maxZoomFactor; |
628 | return {latitude: 180 / Math.PI * | |
629 | Math.atan(0.5 * (Math.exp(n) - Math.exp(-n))), | |
630 | longitude: aX / maxZoomFactor * 360 - 180}; | |
631 | } | |
632 | ||
b47b4a65 RK |
633 | function setMapStyle() { |
634 | var mapSel = document.getElementById("mapSelector"); | |
33a97b69 | 635 | if (mapSel.selectedIndex >= 0 && gMap.activeMap != mapSel.value) { |
dda55132 | 636 | gMap.activeMap = mapSel.value; |
ae9e33a2 | 637 | gPrefs.set("active_map_style", gMap.activeMap); |
95f49ba7 | 638 | document.getElementById("copyright").innerHTML = |
dda55132 | 639 | gMapStyles[gMap.activeMap].copyright; |
33a97b69 RK |
640 | if (!gWaitCounter) { // Only do this when prefs are loaded already. |
641 | showUI(); | |
642 | gMap.draw(); | |
643 | } | |
b47b4a65 RK |
644 | } |
645 | } | |
646 | ||
23cd2dcc RK |
647 | // A sane mod function that works for negative numbers. |
648 | // Returns a % b. | |
649 | function mod(a, b) { | |
650 | return ((a % b) + b) % b; | |
651 | } | |
652 | ||
a8634d37 RK |
653 | function normalizeCoords(aCoords) { |
654 | var zoomFactor = Math.pow(2, aCoords.z); | |
655 | return {x: mod(aCoords.x, zoomFactor), | |
656 | y: mod(aCoords.y, zoomFactor), | |
657 | z: aCoords.z}; | |
23cd2dcc RK |
658 | } |
659 | ||
b9707ee0 RK |
660 | function getTileKey(aStyle, aNormalizedCoords) { |
661 | return aStyle + "::" + | |
662 | aNormalizedCoords.x + "," + | |
663 | aNormalizedCoords.y + "," + | |
664 | aNormalizedCoords.z; | |
665 | } | |
666 | ||
23cd2dcc RK |
667 | // Returns true if the tile is outside the current view. |
668 | function isOutsideWindow(t) { | |
669 | var pos = decodeIndex(t); | |
23cd2dcc | 670 | |
dda55132 | 671 | var zoomFactor = Math.pow(2, gMap.maxZoom - pos.z); |
ac6286bd RK |
672 | var wid = gMap.width * zoomFactor; |
673 | var ht = gMap.height * zoomFactor; | |
23cd2dcc | 674 | |
4b1d0915 RK |
675 | pos.x *= zoomFactor; |
676 | pos.y *= zoomFactor; | |
23cd2dcc | 677 | |
dda55132 RK |
678 | var sz = gMap.tileSize * zoomFactor; |
679 | if (pos.x > gMap.pos.x + wid / 2 || pos.y > gMap.pos.y + ht / 2 || | |
680 | pos.x + sz < gMap.pos.x - wid / 2 || pos.y - sz < gMap.pos.y - ht / 2) | |
23cd2dcc RK |
681 | return true; |
682 | return false; | |
683 | } | |
684 | ||
685 | function encodeIndex(x, y, z) { | |
a8634d37 | 686 | var norm = normalizeCoords({x: x, y: y, z: z}); |
23cd2dcc RK |
687 | return norm.x + "," + norm.y + "," + norm.z; |
688 | } | |
689 | ||
690 | function decodeIndex(encodedIdx) { | |
4b1d0915 RK |
691 | var ind = encodedIdx.split(",", 3); |
692 | return {x: ind[0], y: ind[1], z: ind[2]}; | |
23cd2dcc RK |
693 | } |
694 | ||
6ddefbf9 | 695 | function drawTrack() { |
7a076538 | 696 | if (gTrackContext && (document.hidden != true)) { // Only draw if we're actually visible. |
5dd2ab70 RK |
697 | gLastDrawnPoint = null; |
698 | gCurPosMapCache = undefined; | |
699 | gTrackContext.clearRect(0, 0, gTrackCanvas.width, gTrackCanvas.height); | |
700 | if (gTrack.length) { | |
701 | for (var i = 0; i < gTrack.length; i++) { | |
702 | drawTrackPoint(gTrack[i].coords.latitude, gTrack[i].coords.longitude, | |
852bc801 | 703 | (i + 1 >= gTrack.length || gTrack[i+1].beginSegment)); |
5dd2ab70 | 704 | } |
55c4a0b7 | 705 | } |
14e6d3ad | 706 | } |
55c4a0b7 RK |
707 | } |
708 | ||
14e6d3ad | 709 | function drawTrackPoint(aLatitude, aLongitude, lastPoint) { |
55c4a0b7 | 710 | var trackpoint = gps2xy(aLatitude, aLongitude); |
14e6d3ad RK |
711 | // lastPoint is for optimizing (not actually executing the draw until the last) |
712 | trackpoint.optimized = (lastPoint === false); | |
ac6286bd RK |
713 | var mappos = {x: Math.round((trackpoint.x - gMap.pos.x) / gMap.zoomFactor + gMap.width / 2), |
714 | y: Math.round((trackpoint.y - gMap.pos.y) / gMap.zoomFactor + gMap.height / 2)}; | |
14e6d3ad RK |
715 | |
716 | if (!gLastDrawnPoint || !gLastDrawnPoint.optimized) { | |
4b1d0915 RK |
717 | gTrackContext.strokeStyle = gTrackColor; |
718 | gTrackContext.fillStyle = gTrackContext.strokeStyle; | |
719 | gTrackContext.lineWidth = gTrackWidth; | |
720 | gTrackContext.lineCap = "round"; | |
721 | gTrackContext.lineJoin = "round"; | |
14e6d3ad | 722 | } |
852bc801 | 723 | // This breaks optimiziation, so make sure to reset optimization. |
14e6d3ad | 724 | if (!gLastDrawnPoint || gLastDrawnPoint == trackpoint) { |
852bc801 RK |
725 | trackpoint.optimized = false; |
726 | // Close path if one was open. | |
727 | if (gLastDrawnPoint && gLastDrawnPoint.optimized) { | |
4b1d0915 | 728 | gTrackContext.stroke(); |
852bc801 RK |
729 | } |
730 | } | |
731 | if (!gLastDrawnPoint || (gLastDrawnPoint == trackpoint) || !gLastDrawnPoint.optimized) { | |
732 | // Start drawing a segment. | |
4b1d0915 | 733 | gTrackContext.beginPath(); |
4b1d0915 RK |
734 | gTrackContext.arc(mappos.x, mappos.y, |
735 | gTrackContext.lineWidth, 0, Math.PI * 2, false); | |
736 | gTrackContext.fill(); | |
55c4a0b7 RK |
737 | } |
738 | else { | |
852bc801 | 739 | // Continue drawing segment, close if needed. |
4b1d0915 | 740 | gTrackContext.lineTo(mappos.x, mappos.y); |
14e6d3ad | 741 | if (!trackpoint.optimized) |
4b1d0915 | 742 | gTrackContext.stroke(); |
55c4a0b7 | 743 | } |
14e6d3ad | 744 | gLastDrawnPoint = trackpoint; |
23cd2dcc RK |
745 | } |
746 | ||
b054bd48 | 747 | function drawCurrentLocation(trackPoint) { |
4b1d0915 RK |
748 | var locpoint = gps2xy(trackPoint.coords.latitude, trackPoint.coords.longitude); |
749 | var circleRadius = Math.round(gCurLocSize / 2); | |
ac6286bd RK |
750 | var mappos = {x: Math.round((locpoint.x - gMap.pos.x) / gMap.zoomFactor + gMap.width / 2), |
751 | y: Math.round((locpoint.y - gMap.pos.y) / gMap.zoomFactor + gMap.height / 2)}; | |
4b1d0915 RK |
752 | |
753 | undrawCurrentLocation(); | |
b054bd48 RK |
754 | |
755 | // Cache overdrawn area. | |
4b1d0915 RK |
756 | gCurPosMapCache = |
757 | {point: locpoint, | |
758 | radius: circleRadius, | |
759 | data: gTrackContext.getImageData(mappos.x - circleRadius, | |
760 | mappos.y - circleRadius, | |
761 | circleRadius * 2, circleRadius * 2)}; | |
762 | ||
763 | gTrackContext.strokeStyle = gCurLocColor; | |
764 | gTrackContext.fillStyle = gTrackContext.strokeStyle; | |
765 | gTrackContext.beginPath(); | |
766 | gTrackContext.arc(mappos.x, mappos.y, | |
767 | circleRadius, 0, Math.PI * 2, false); | |
768 | gTrackContext.fill(); | |
769 | } | |
770 | ||
771 | function undrawCurrentLocation() { | |
772 | if (gCurPosMapCache) { | |
773 | var oldpoint = gCurPosMapCache.point; | |
ac6286bd RK |
774 | var oldmp = {x: Math.round((oldpoint.x - gMap.pos.x) / gMap.zoomFactor + gMap.width / 2), |
775 | y: Math.round((oldpoint.y - gMap.pos.y) / gMap.zoomFactor + gMap.height / 2)}; | |
4b1d0915 RK |
776 | gTrackContext.putImageData(gCurPosMapCache.data, |
777 | oldmp.x - gCurPosMapCache.radius, | |
778 | oldmp.y - gCurPosMapCache.radius); | |
779 | gCurPosMapCache = undefined; | |
780 | } | |
b054bd48 RK |
781 | } |
782 | ||
7a076538 RK |
783 | function calcTrackDuration() { |
784 | // Get the duration of the track in s. | |
785 | var tDuration = 0; | |
786 | if (gTrack.length > 1) { | |
787 | for (var i = 1; i < gTrack.length; i++) { | |
8f63227b RK |
788 | if (!gTrack[i].beginSegment) { |
789 | tDuration += (gTrack[i].time - gTrack[i-1].time); | |
790 | } | |
7a076538 RK |
791 | } |
792 | } | |
793 | return Math.round(tDuration / 1000); // The timestamps are in ms but we return seconds. | |
794 | } | |
795 | ||
796 | function calcTrackLength() { | |
797 | // Get the length of the track in km. | |
798 | var tLength = 0; | |
799 | if (gTrack.length > 1) { | |
800 | for (var i = 1; i < gTrack.length; i++) { | |
8f63227b RK |
801 | if (!gTrack[i].beginSegment) { |
802 | tLength += getPointDistance(gTrack[i-1].coords, gTrack[i].coords); | |
803 | } | |
7a076538 RK |
804 | } |
805 | } | |
806 | return tLength; | |
807 | } | |
808 | ||
809 | function getPointDistance(aGPSPoint1, aGPSPoint2) { | |
810 | // Get the distance in km between the two given GPS points. | |
811 | // See http://stackoverflow.com/questions/365826/calculate-distance-between-2-gps-coordinates | |
812 | // Earth is almost exactly a sphere and we calculate small distances on the surface, so we can do spherical great-circle math. | |
813 | // Also see http://en.wikipedia.org/wiki/Great-circle_distance | |
814 | var R = 6371; // km | |
815 | var dLat = deg2rad(aGPSPoint2.latitude - aGPSPoint1.latitude); | |
816 | var dLon = deg2rad(aGPSPoint2.longitude - aGPSPoint1.longitude); | |
817 | var lat1 = deg2rad(aGPSPoint1.latitude); | |
818 | var lat2 = deg2rad(aGPSPoint2.latitude); | |
819 | ||
820 | var a = Math.sin(dLat/2) * Math.sin(dLat/2) + | |
821 | Math.sin(dLon/2) * Math.sin(dLon/2) * Math.cos(lat1) * Math.cos(lat2); | |
822 | var c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a)); | |
823 | return R * c; | |
824 | } | |
825 | ||
826 | function deg2rad(aDegreeValue) { | |
827 | // Convert an angle in degrees to radiants. | |
828 | return aDegreeValue * (Math.PI / 180); | |
829 | } | |
830 | ||
23cd2dcc RK |
831 | var mapEvHandler = { |
832 | handleEvent: function(aEvent) { | |
833 | var touchEvent = aEvent.type.indexOf('touch') != -1; | |
834 | ||
306ae634 RK |
835 | if (touchEvent) { |
836 | aEvent.stopPropagation(); | |
837 | } | |
838 | ||
8389557a RK |
839 | // Bail out if the event is happening on an input. |
840 | if (aEvent.target.tagName.toLowerCase() == "input") | |
841 | return; | |
842 | ||
1222624d RK |
843 | // Bail out on unwanted map moves, but not zoom or keyboard events. |
844 | if (aEvent.type.indexOf("mouse") === 0 || aEvent.type.indexOf("touch") === 0) { | |
23cd2dcc RK |
845 | // Bail out if this is neither a touch nor left-click. |
846 | if (!touchEvent && aEvent.button != 0) | |
847 | return; | |
848 | ||
849 | // Bail out if the started touch can't be found. | |
4b12da3a RK |
850 | if (touchEvent && gDragging && |
851 | !aEvent.changedTouches.identifiedTouch(gDragTouchID)) | |
23cd2dcc RK |
852 | return; |
853 | } | |
854 | ||
855 | var coordObj = touchEvent ? | |
4b12da3a | 856 | aEvent.changedTouches.identifiedTouch(gDragTouchID) : |
23cd2dcc RK |
857 | aEvent; |
858 | ||
859 | switch (aEvent.type) { | |
860 | case "mousedown": | |
861 | case "touchstart": | |
862 | if (touchEvent) { | |
517c0099 RK |
863 | if (aEvent.targetTouches.length == 2) { |
864 | gPinchStartWidth = Math.sqrt( | |
865 | Math.pow(aEvent.targetTouches.item(1).clientX - | |
866 | aEvent.targetTouches.item(0).clientX, 2) + | |
867 | Math.pow(aEvent.targetTouches.item(1).clientY - | |
868 | aEvent.targetTouches.item(0).clientY, 2) | |
869 | ); | |
870 | } | |
4b12da3a RK |
871 | gDragTouchID = aEvent.changedTouches.item(0).identifier; |
872 | coordObj = aEvent.changedTouches.identifiedTouch(gDragTouchID); | |
23cd2dcc | 873 | } |
ac6286bd RK |
874 | var x = coordObj.clientX - gGLMapCanvas.offsetLeft; |
875 | var y = coordObj.clientY - gGLMapCanvas.offsetTop; | |
b395419b | 876 | |
23cd2dcc RK |
877 | if (touchEvent || aEvent.button === 0) { |
878 | gDragging = true; | |
879 | } | |
880 | gLastMouseX = x; | |
881 | gLastMouseY = y; | |
7a549148 | 882 | showUI(); |
23cd2dcc RK |
883 | break; |
884 | case "mousemove": | |
885 | case "touchmove": | |
517c0099 RK |
886 | if (touchEvent && aEvent.targetTouches.length == 2) { |
887 | curPinchStartWidth = Math.sqrt( | |
888 | Math.pow(aEvent.targetTouches.item(1).clientX - | |
889 | aEvent.targetTouches.item(0).clientX, 2) + | |
890 | Math.pow(aEvent.targetTouches.item(1).clientY - | |
891 | aEvent.targetTouches.item(0).clientY, 2) | |
892 | ); | |
003d56f8 RK |
893 | if (!gPinchStartWidth) |
894 | gPinchStartWidth = curPinchStartWidth; | |
d07d7abc | 895 | |
517c0099 RK |
896 | if (gPinchStartWidth / curPinchStartWidth > 1.7 || |
897 | gPinchStartWidth / curPinchStartWidth < 0.6) { | |
dda55132 RK |
898 | var newZoomLevel = gMap.pos.z + (gPinchStartWidth < curPinchStartWidth ? 1 : -1); |
899 | if ((newZoomLevel >= 0) && (newZoomLevel <= gMap.maxZoom)) { | |
517c0099 RK |
900 | // Calculate new center of the map - preserve middle of pinch. |
901 | // This means that pixel distance between old center and middle | |
902 | // must equal pixel distance of new center and middle. | |
903 | var x = (aEvent.targetTouches.item(1).clientX + | |
904 | aEvent.targetTouches.item(0).clientX) / 2 - | |
ac6286bd | 905 | gGLMapCanvas.offsetLeft; |
517c0099 RK |
906 | var y = (aEvent.targetTouches.item(1).clientY + |
907 | aEvent.targetTouches.item(0).clientY) / 2 - | |
ac6286bd | 908 | gGLMapCanvas.offsetTop; |
517c0099 RK |
909 | |
910 | // Zoom factor after this action. | |
dda55132 | 911 | var newZoomFactor = Math.pow(2, gMap.maxZoom - newZoomLevel); |
ac6286bd RK |
912 | gMap.pos.x -= (x - gMap.width / 2) * (newZoomFactor - gMap.zoomFactor); |
913 | gMap.pos.y -= (y - gMap.height / 2) * (newZoomFactor - gMap.zoomFactor); | |
517c0099 RK |
914 | |
915 | if (gPinchStartWidth < curPinchStartWidth) | |
916 | zoomIn(); | |
917 | else | |
918 | zoomOut(); | |
003d56f8 RK |
919 | |
920 | // Reset pinch start width and start another pinch gesture. | |
921 | gPinchStartWidth = null; | |
517c0099 RK |
922 | } |
923 | } | |
d07d7abc | 924 | // If we are in a pinch, do not drag. |
517c0099 RK |
925 | break; |
926 | } | |
ac6286bd RK |
927 | var x = coordObj.clientX - gGLMapCanvas.offsetLeft; |
928 | var y = coordObj.clientY - gGLMapCanvas.offsetTop; | |
23cd2dcc RK |
929 | if (gDragging === true) { |
930 | var dX = x - gLastMouseX; | |
931 | var dY = y - gLastMouseY; | |
dda55132 RK |
932 | gMap.pos.x -= dX * gMap.zoomFactor; |
933 | gMap.pos.y -= dY * gMap.zoomFactor; | |
0f6678fa | 934 | gMap.draw(); |
7a549148 | 935 | showUI(); |
23cd2dcc RK |
936 | } |
937 | gLastMouseX = x; | |
938 | gLastMouseY = y; | |
939 | break; | |
940 | case "mouseup": | |
941 | case "touchend": | |
d07d7abc | 942 | gPinchStartWidth = null; |
23cd2dcc | 943 | gDragging = false; |
7a549148 | 944 | showUI(); |
23cd2dcc RK |
945 | break; |
946 | case "mouseout": | |
947 | case "touchcancel": | |
948 | case "touchleave": | |
949 | //gDragging = false; | |
950 | break; | |
5fb31b29 RK |
951 | case "wheel": |
952 | // If we'd want pixels, we'd need to calc up using aEvent.deltaMode. | |
953 | // See https://developer.mozilla.org/en-US/docs/Mozilla_event_reference/wheel | |
954 | ||
955 | // Only accept (non-null) deltaY values | |
956 | if (!aEvent.deltaY) | |
957 | break; | |
23cd2dcc | 958 | |
55c4a0b7 RK |
959 | // Debug output: "coordinates" of the point the mouse was over. |
960 | /* | |
ac6286bd RK |
961 | var ptCoord = {x: gMap.pos.x + (x - gMap.width / 2) * gMap.zoomFactor, |
962 | y: gMap.pos.y + (x - gMap.height / 2) * gMap.zoomFactor}; | |
55c4a0b7 RK |
963 | var gpsCoord = xy2gps(ptCoord.x, ptCoord.y); |
964 | var pt2Coord = gps2xy(gpsCoord.latitude, gpsCoord.longitude); | |
915d4271 RK |
965 | console.log(ptCoord.x + "/" + ptCoord.y + " - " + |
966 | gpsCoord.latitude + "/" + gpsCoord.longitude + " - " + | |
967 | pt2Coord.x + "/" + pt2Coord.y); | |
55c4a0b7 | 968 | */ |
4b1d0915 | 969 | |
dda55132 RK |
970 | var newZoomLevel = gMap.pos.z + (aEvent.deltaY < 0 ? 1 : -1); |
971 | if ((newZoomLevel >= 0) && (newZoomLevel <= gMap.maxZoom)) { | |
4b1d0915 RK |
972 | // Calculate new center of the map - same point stays under the mouse. |
973 | // This means that the pixel distance between the old center and point | |
974 | // must equal the pixel distance of the new center and that point. | |
ac6286bd RK |
975 | var x = coordObj.clientX - gGLMapCanvas.offsetLeft; |
976 | var y = coordObj.clientY - gGLMapCanvas.offsetTop; | |
4b1d0915 RK |
977 | |
978 | // Zoom factor after this action. | |
dda55132 | 979 | var newZoomFactor = Math.pow(2, gMap.maxZoom - newZoomLevel); |
ac6286bd RK |
980 | gMap.pos.x -= (x - gMap.width / 2) * (newZoomFactor - gMap.zoomFactor); |
981 | gMap.pos.y -= (y - gMap.height / 2) * (newZoomFactor - gMap.zoomFactor); | |
4b1d0915 | 982 | |
5fb31b29 | 983 | if (aEvent.deltaY < 0) |
4b1d0915 | 984 | zoomIn(); |
5fb31b29 | 985 | else |
4b1d0915 RK |
986 | zoomOut(); |
987 | } | |
23cd2dcc | 988 | break; |
1222624d RK |
989 | case "keydown": |
990 | // Allow keyboard control to move and zoom the map. | |
991 | // Should use aEvent.key instead of aEvent.which but needs bug 680830. | |
992 | // See https://developer.mozilla.org/en-US/docs/DOM/Mozilla_event_reference/keydown | |
993 | var dX = 0; | |
994 | var dY = 0; | |
995 | switch (aEvent.which) { | |
996 | case 39: // right | |
dda55132 | 997 | dX = -gMap.tileSize / 2; |
1222624d RK |
998 | break; |
999 | case 37: // left | |
dda55132 | 1000 | dX = gMap.tileSize / 2; |
1222624d RK |
1001 | break; |
1002 | case 38: // up | |
dda55132 | 1003 | dY = gMap.tileSize / 2; |
1222624d RK |
1004 | break; |
1005 | case 40: // down | |
dda55132 | 1006 | dY = -gMap.tileSize / 2; |
1222624d RK |
1007 | break; |
1008 | case 87: // w | |
1009 | case 107: // + (numpad) | |
1010 | case 171: // + (normal key) | |
1011 | zoomIn(); | |
1012 | break; | |
1013 | case 83: // s | |
1014 | case 109: // - (numpad) | |
1015 | case 173: // - (normal key) | |
1016 | zoomOut(); | |
1017 | break; | |
1018 | case 48: // 0 | |
1019 | case 49: // 1 | |
1020 | case 50: // 2 | |
1021 | case 51: // 3 | |
1022 | case 52: // 4 | |
1023 | case 53: // 5 | |
1024 | case 54: // 6 | |
1025 | case 55: // 7 | |
1026 | case 56: // 8 | |
1027 | zoomTo(aEvent.which - 38); | |
1028 | break; | |
1029 | case 57: // 9 | |
1030 | zoomTo(9); | |
1031 | break; | |
1032 | case 96: // 0 (numpad) | |
1033 | case 97: // 1 (numpad) | |
1034 | case 98: // 2 (numpad) | |
1035 | case 99: // 3 (numpad) | |
1036 | case 100: // 4 (numpad) | |
1037 | case 101: // 5 (numpad) | |
1038 | case 102: // 6 (numpad) | |
1039 | case 103: // 7 (numpad) | |
1040 | case 104: // 8 (numpad) | |
1041 | zoomTo(aEvent.which - 86); | |
1042 | break; | |
1043 | case 105: // 9 (numpad) | |
1044 | zoomTo(9); | |
1045 | break; | |
1046 | default: // not supported | |
1047 | console.log("key not supported: " + aEvent.which); | |
1048 | break; | |
1049 | } | |
1050 | ||
1051 | // Move if needed. | |
1052 | if (dX || dY) { | |
dda55132 RK |
1053 | gMap.pos.x -= dX * gMap.zoomFactor; |
1054 | gMap.pos.y -= dY * gMap.zoomFactor; | |
0f6678fa | 1055 | gMap.draw(); |
1222624d RK |
1056 | } |
1057 | break; | |
23cd2dcc RK |
1058 | } |
1059 | } | |
1060 | }; | |
55c4a0b7 | 1061 | |
5dd2ab70 RK |
1062 | function visibilityEvHandler() { |
1063 | // Immediately draw if we just got visible. | |
1064 | if (document.hidden != true) { | |
1065 | gMap.draw(); | |
1066 | } | |
1067 | // No need to handle the event where we become invisible as we care only draw | |
1068 | // when we are visible anyhow. | |
1069 | } | |
1070 | ||
993fd081 | 1071 | var geofake = { |
55c4a0b7 | 1072 | tracking: false, |
4b12da3a | 1073 | lastPos: {x: undefined, y: undefined}, |
55c4a0b7 RK |
1074 | watchPosition: function(aSuccessCallback, aErrorCallback, aPrefObject) { |
1075 | this.tracking = true; | |
1076 | var watchCall = function() { | |
4b12da3a RK |
1077 | // calc new position in lat/lon degrees |
1078 | // 90° on Earth surface are ~10,000 km at the equator, | |
1079 | // so try moving at most 10m at a time | |
1080 | if (geofake.lastPos.x) | |
1081 | geofake.lastPos.x += (Math.random() - .5) * 90 / 1000000 | |
1082 | else | |
1083 | geofake.lastPos.x = 48.208174 | |
1084 | if (geofake.lastPos.y) | |
1085 | geofake.lastPos.y += (Math.random() - .5) * 90 / 1000000 | |
1086 | else | |
1087 | geofake.lastPos.y = 16.373819 | |
55c4a0b7 | 1088 | aSuccessCallback({timestamp: Date.now(), |
4b12da3a RK |
1089 | coords: {latitude: geofake.lastPos.x, |
1090 | longitude: geofake.lastPos.y, | |
55c4a0b7 RK |
1091 | accuracy: 20}}); |
1092 | if (geofake.tracking) | |
1093 | setTimeout(watchCall, 1000); | |
1094 | }; | |
1095 | setTimeout(watchCall, 1000); | |
1096 | return "foo"; | |
1097 | }, | |
1098 | clearWatch: function(aID) { | |
1099 | this.tracking = false; | |
1100 | } | |
1101 | } | |
1102 | ||
3610c22d RK |
1103 | function setCentering(aCheckbox) { |
1104 | if (gMapPrefsLoaded && mainDB) | |
1105 | gPrefs.set("center_map", aCheckbox.checked); | |
1106 | gCenterPosition = aCheckbox.checked; | |
1107 | } | |
1108 | ||
1109 | function setTracking(aCheckbox) { | |
1110 | if (gMapPrefsLoaded && mainDB) | |
1111 | gPrefs.set("tracking_enabled", aCheckbox.checked); | |
1112 | if (aCheckbox.checked) | |
1113 | startTracking(); | |
1114 | else | |
1115 | endTracking(); | |
1116 | } | |
1117 | ||
55c4a0b7 | 1118 | function startTracking() { |
31f0fe16 | 1119 | if (gGeolocation) { |
68afcd96 RK |
1120 | gActionLabel.textContent = "Establishing Position"; |
1121 | gAction.style.display = "block"; | |
4b12da3a | 1122 | gGeoWatchID = gGeolocation.watchPosition( |
55c4a0b7 | 1123 | function(position) { |
68afcd96 RK |
1124 | if (gActionLabel.textContent) { |
1125 | gActionLabel.textContent = ""; | |
1126 | gAction.style.display = "none"; | |
1127 | } | |
55c4a0b7 | 1128 | // Coords spec: https://developer.mozilla.org/en/XPCOM_Interface_Reference/NsIDOMGeoPositionCoords |
993fd081 | 1129 | var tPoint = {time: position.timestamp, |
31f0fe16 RK |
1130 | coords: {latitude: position.coords.latitude, |
1131 | longitude: position.coords.longitude, | |
1132 | altitude: position.coords.altitude, | |
1133 | accuracy: position.coords.accuracy, | |
1134 | altitudeAccuracy: position.coords.altitudeAccuracy, | |
1135 | heading: position.coords.heading, | |
1136 | speed: position.coords.speed}, | |
993fd081 | 1137 | beginSegment: !gLastTrackPoint}; |
b054bd48 RK |
1138 | // Only add point to track is accuracy is good enough. |
1139 | if (tPoint.coords.accuracy < gMinTrackAccuracy) { | |
1140 | gLastTrackPoint = tPoint; | |
1141 | gTrack.push(tPoint); | |
1142 | try { gTrackStore.push(tPoint); } catch(e) {} | |
1143 | var redrawn = false; | |
1144 | if (gCenterPosition) { | |
1145 | var posCoord = gps2xy(position.coords.latitude, | |
1146 | position.coords.longitude); | |
ac6286bd RK |
1147 | if (Math.abs(gMap.pos.x - posCoord.x) > gMap.width * gMap.zoomFactor / 4 || |
1148 | Math.abs(gMap.pos.y - posCoord.y) > gMap.height * gMap.zoomFactor / 4) { | |
dda55132 RK |
1149 | gMap.pos.x = posCoord.x; |
1150 | gMap.pos.y = posCoord.y; | |
ac6286bd | 1151 | gMap.draw(); // This draws the current point as well. |
b054bd48 RK |
1152 | redrawn = true; |
1153 | } | |
99631a75 | 1154 | } |
b054bd48 | 1155 | if (!redrawn) |
4b1d0915 | 1156 | undrawCurrentLocation(); |
b054bd48 | 1157 | drawTrackPoint(position.coords.latitude, position.coords.longitude, true); |
05c21757 | 1158 | } |
b054bd48 | 1159 | drawCurrentLocation(tPoint); |
55c4a0b7 RK |
1160 | }, |
1161 | function(error) { | |
1162 | // Ignore erros for the moment, but this is good for debugging. | |
1163 | // See https://developer.mozilla.org/en/Using_geolocation#Handling_errors | |
915d4271 RK |
1164 | if (gDebug) |
1165 | console.log(error.message); | |
55c4a0b7 RK |
1166 | }, |
1167 | {enableHighAccuracy: true} | |
1168 | ); | |
1169 | } | |
1170 | } | |
1171 | ||
1172 | function endTracking() { | |
68afcd96 RK |
1173 | if (gActionLabel.textContent) { |
1174 | gActionLabel.textContent = ""; | |
1175 | gAction.style.display = "none"; | |
1176 | } | |
55c4a0b7 | 1177 | if (gGeoWatchID) { |
4b12da3a | 1178 | gGeolocation.clearWatch(gGeoWatchID); |
55c4a0b7 RK |
1179 | } |
1180 | } | |
993fd081 RK |
1181 | |
1182 | function clearTrack() { | |
1183 | gTrack = []; | |
1184 | gTrackStore.clear(); | |
6ddefbf9 | 1185 | drawTrack(); |
993fd081 | 1186 | } |
a8634d37 RK |
1187 | |
1188 | var gTileService = { | |
1189 | objStore: "tilecache", | |
1190 | ||
5d67397a | 1191 | ageLimit: 14 * 86400 * 1000, // 2 weeks (in ms) |
3431f496 | 1192 | |
a8634d37 RK |
1193 | get: function(aStyle, aCoords, aCallback) { |
1194 | var norm = normalizeCoords(aCoords); | |
b9707ee0 | 1195 | var dbkey = getTileKey(aStyle, norm); |
a8634d37 RK |
1196 | this.getDBCache(dbkey, function(aResult, aEvent) { |
1197 | if (aResult) { | |
1198 | // We did get a cached object. | |
e8525b46 | 1199 | aCallback(aResult.image, aStyle, aCoords, dbkey); |
3431f496 | 1200 | // Look at the timestamp and return if it's not too old. |
5d67397a | 1201 | if (aResult.timestamp + gTileService.ageLimit > Date.now()) |
3431f496 RK |
1202 | return; |
1203 | // Reload cached tile otherwise. | |
5d67397a RK |
1204 | var oldDate = new Date(aResult.timestamp); |
1205 | console.log("reload cached tile: " + dbkey + " - " + oldDate.toUTCString()); | |
a8634d37 | 1206 | } |
3431f496 RK |
1207 | // Retrieve image from the web and store it in the cache. |
1208 | var XHR = new XMLHttpRequest(); | |
1209 | XHR.open("GET", | |
1210 | gMapStyles[aStyle].url | |
1211 | .replace("{x}", norm.x) | |
1212 | .replace("{y}", norm.y) | |
1213 | .replace("{z}", norm.z) | |
5ed2937e | 1214 | .replace("[a-c]", String.fromCharCode(97 + Math.floor(Math.random() * 3))) |
ca77d52d | 1215 | .replace("[a-d]", String.fromCharCode(97 + Math.floor(Math.random() * 4))) |
5ed2937e | 1216 | .replace("[1-4]", 1 + Math.floor(Math.random() * 4)), |
3431f496 RK |
1217 | true); |
1218 | XHR.responseType = "blob"; | |
1219 | XHR.addEventListener("load", function () { | |
1220 | if (XHR.status === 200) { | |
1221 | var blob = XHR.response; | |
e8525b46 | 1222 | aCallback(blob, aStyle, aCoords, dbkey); |
6d7cdcf6 | 1223 | gTileService.setDBCache(dbkey, {image: blob, timestamp: Date.now()}); |
3431f496 RK |
1224 | } |
1225 | }, false); | |
1226 | XHR.send(); | |
a8634d37 RK |
1227 | }); |
1228 | }, | |
1229 | ||
1230 | getDBCache: function(aKey, aCallback) { | |
1231 | if (!mainDB) | |
1232 | return; | |
1233 | var transaction = mainDB.transaction([this.objStore]); | |
1234 | var request = transaction.objectStore(this.objStore).get(aKey); | |
1235 | request.onsuccess = function(event) { | |
1236 | aCallback(request.result, event); | |
1237 | }; | |
1238 | request.onerror = function(event) { | |
1239 | // Errors can be handled here. | |
1240 | aCallback(undefined, event); | |
1241 | }; | |
1242 | }, | |
1243 | ||
1244 | setDBCache: function(aKey, aValue, aCallback) { | |
1245 | if (!mainDB) | |
1246 | return; | |
1247 | var success = false; | |
1248 | var transaction = mainDB.transaction([this.objStore], "readwrite"); | |
1249 | var objStore = transaction.objectStore(this.objStore); | |
1250 | var request = objStore.put(aValue, aKey); | |
1251 | request.onsuccess = function(event) { | |
1252 | success = true; | |
1253 | if (aCallback) | |
1254 | aCallback(success, event); | |
1255 | }; | |
1256 | request.onerror = function(event) { | |
1257 | // Errors can be handled here. | |
1258 | if (aCallback) | |
1259 | aCallback(success, event); | |
1260 | }; | |
1261 | }, | |
1262 | ||
1263 | unsetDBCache: function(aKey, aCallback) { | |
1264 | if (!mainDB) | |
1265 | return; | |
1266 | var success = false; | |
1267 | var transaction = mainDB.transaction([this.objStore], "readwrite"); | |
1268 | var request = transaction.objectStore(this.objStore).delete(aKey); | |
1269 | request.onsuccess = function(event) { | |
1270 | success = true; | |
1271 | if (aCallback) | |
1272 | aCallback(success, event); | |
1273 | }; | |
1274 | request.onerror = function(event) { | |
1275 | // Errors can be handled here. | |
1276 | if (aCallback) | |
1277 | aCallback(success, event); | |
1278 | } | |
3431f496 RK |
1279 | }, |
1280 | ||
1281 | clearDB: function(aCallback) { | |
1282 | if (!mainDB) | |
1283 | return; | |
1284 | var success = false; | |
1285 | var transaction = mainDB.transaction([this.objStore], "readwrite"); | |
1286 | var request = transaction.objectStore(this.objStore).clear(); | |
1287 | request.onsuccess = function(event) { | |
1288 | success = true; | |
1289 | if (aCallback) | |
1290 | aCallback(success, event); | |
1291 | }; | |
1292 | request.onerror = function(event) { | |
1293 | // Errors can be handled here. | |
1294 | if (aCallback) | |
1295 | aCallback(success, event); | |
1296 | } | |
a8634d37 RK |
1297 | } |
1298 | }; |