Commit | Line | Data |
---|---|---|
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"); | |
dda55132 RK |
111 | if (!gMap.activeMap) |
112 | gMap.activeMap = "osm_mapnik"; | |
23cd2dcc | 113 | |
4b12da3a RK |
114 | //gDebug = true; |
115 | if (gDebug) { | |
116 | gGeolocation = geofake; | |
117 | var hiddenList = document.getElementsByClassName("debugHide"); | |
118 | // last to first - list of elements with that class is changing! | |
119 | for (var i = hiddenList.length - 1; i >= 0; i--) { | |
120 | hiddenList[i].classList.remove("debugHide"); | |
121 | } | |
122 | } | |
123 | ||
edc3be71 | 124 | gAction.addEventListener("prefload-done", gMap.initGL, false); |
ecde0af2 | 125 | |
582d50fc RK |
126 | console.log("map vars set, loading prefs..."); |
127 | loadPrefs(); | |
128 | } | |
b395419b | 129 | |
582d50fc RK |
130 | function loadPrefs(aEvent) { |
131 | if (aEvent && aEvent.type == "prefs-step") { | |
132 | console.log("wait: " + gWaitCounter); | |
133 | if (gWaitCounter == 0) { | |
134 | gAction.removeEventListener(aEvent.type, loadPrefs, false); | |
135 | gMapPrefsLoaded = true; | |
136 | console.log("prefs loaded."); | |
137 | ||
138 | gTrackCanvas.addEventListener("mouseup", mapEvHandler, false); | |
139 | gTrackCanvas.addEventListener("mousemove", mapEvHandler, false); | |
140 | gTrackCanvas.addEventListener("mousedown", mapEvHandler, false); | |
141 | gTrackCanvas.addEventListener("mouseout", mapEvHandler, false); | |
142 | ||
143 | gTrackCanvas.addEventListener("touchstart", mapEvHandler, false); | |
144 | gTrackCanvas.addEventListener("touchmove", mapEvHandler, false); | |
145 | gTrackCanvas.addEventListener("touchend", mapEvHandler, false); | |
146 | gTrackCanvas.addEventListener("touchcancel", mapEvHandler, false); | |
147 | gTrackCanvas.addEventListener("touchleave", mapEvHandler, false); | |
148 | ||
149 | gTrackCanvas.addEventListener("wheel", mapEvHandler, false); | |
150 | ||
151 | document.getElementById("body").addEventListener("keydown", mapEvHandler, false); | |
152 | ||
5dd2ab70 RK |
153 | document.addEventListener("visibilitychange", visibilityEvHandler, false); |
154 | ||
d7310ee2 | 155 | console.log("Events added."); |
582d50fc | 156 | document.getElementById("copyright").innerHTML = |
dda55132 | 157 | gMapStyles[gMap.activeMap].copyright; |
582d50fc | 158 | |
decacd7f | 159 | console.log("Init loading tile..."); |
582d50fc | 160 | gLoadingTile = new Image(); |
582d50fc | 161 | gLoadingTile.onload = function() { |
decacd7f | 162 | console.log("Loading tile loaded."); |
ecde0af2 | 163 | var throwEv = new CustomEvent("prefload-done"); |
582d50fc RK |
164 | gAction.dispatchEvent(throwEv); |
165 | }; | |
decacd7f RK |
166 | console.log("Set loading tile..."); |
167 | gLoadingTile.src = "style/loading.png"; | |
582d50fc RK |
168 | } |
169 | } | |
170 | else { | |
171 | if (aEvent) | |
172 | gAction.removeEventListener(aEvent.type, loadPrefs, false); | |
173 | gAction.addEventListener("prefs-step", loadPrefs, false); | |
174 | gWaitCounter++; | |
ae9e33a2 RK |
175 | gPrefs.get("active_map_style", function(aValue) { |
176 | if (aValue && gMapStyles[aValue]) { | |
177 | gMap.activeMap = aValue; | |
ace4b369 | 178 | document.getElementById("mapSelector").value = aValue; |
ae9e33a2 RK |
179 | } |
180 | gWaitCounter--; | |
181 | var throwEv = new CustomEvent("prefs-step"); | |
182 | gAction.dispatchEvent(throwEv); | |
183 | }); | |
184 | gWaitCounter++; | |
582d50fc | 185 | gPrefs.get("position", function(aValue) { |
ac6286bd | 186 | if (aValue && aValue.x && aValue.y && aValue.z) { |
dda55132 | 187 | gMap.pos = aValue; |
582d50fc | 188 | } |
df81068a RK |
189 | gWaitCounter--; |
190 | var throwEv = new CustomEvent("prefs-step"); | |
191 | gAction.dispatchEvent(throwEv); | |
582d50fc RK |
192 | }); |
193 | gWaitCounter++; | |
194 | gPrefs.get("center_map", function(aValue) { | |
ae9e33a2 | 195 | if (aValue === undefined) { |
582d50fc | 196 | document.getElementById("centerCheckbox").checked = true; |
ae9e33a2 RK |
197 | } |
198 | else { | |
582d50fc | 199 | document.getElementById("centerCheckbox").checked = aValue; |
ae9e33a2 | 200 | } |
582d50fc RK |
201 | setCentering(document.getElementById("centerCheckbox")); |
202 | gWaitCounter--; | |
203 | var throwEv = new CustomEvent("prefs-step"); | |
204 | gAction.dispatchEvent(throwEv); | |
205 | }); | |
206 | gWaitCounter++; | |
207 | gPrefs.get("tracking_enabled", function(aValue) { | |
ae9e33a2 | 208 | if (aValue === undefined) { |
582d50fc | 209 | document.getElementById("trackCheckbox").checked = true; |
ae9e33a2 RK |
210 | } |
211 | else { | |
582d50fc | 212 | document.getElementById("trackCheckbox").checked = aValue; |
ae9e33a2 | 213 | } |
582d50fc RK |
214 | gWaitCounter--; |
215 | var throwEv = new CustomEvent("prefs-step"); | |
216 | gAction.dispatchEvent(throwEv); | |
217 | }); | |
218 | gWaitCounter++; | |
cef88e12 RK |
219 | var trackLoadStarted = false; |
220 | var redrawBase = 100; | |
6ddefbf9 RK |
221 | gTrackStore.getListStepped(function(aTPoint) { |
222 | if (aTPoint) { | |
223 | // Add in front and return new length. | |
224 | var tracklen = gTrack.unshift(aTPoint); | |
7a076538 RK |
225 | // Redraw track periodically, larger distance the longer it gets |
226 | // (but clamped to the first value over a certain limit). | |
fdaf08db RK |
227 | // Initial paint will do initial track drawing. |
228 | if (tracklen % redrawBase == 0) { | |
6ddefbf9 | 229 | drawTrack(); |
7a076538 RK |
230 | if (redrawBase < 1000) { |
231 | redrawBase = tracklen; | |
232 | } | |
fdaf08db | 233 | } |
6ddefbf9 RK |
234 | } |
235 | else { | |
236 | // Last point received. | |
237 | drawTrack(); | |
238 | } | |
239 | if (!trackLoadStarted) { | |
240 | // We have the most recent point, if present, rest will load async. | |
241 | trackLoadStarted = true; | |
242 | gWaitCounter--; | |
243 | var throwEv = new CustomEvent("prefs-step"); | |
244 | gAction.dispatchEvent(throwEv); | |
582d50fc | 245 | } |
582d50fc RK |
246 | }); |
247 | } | |
23cd2dcc RK |
248 | } |
249 | ||
edc3be71 RK |
250 | var gMap = { |
251 | gl: null, | |
252 | glShaderProgram: null, | |
253 | glVertexPositionAttr: null, | |
254 | glTextureCoordAttr: null, | |
255 | glResolutionAttr: null, | |
256 | glMapTexture: null, | |
e8525b46 | 257 | glTextures: {}, |
d6ff6891 RK |
258 | glTxCleanIntervalID: null, |
259 | glTexturesPerZoomLevel: 0, | |
edc3be71 | 260 | |
dda55132 RK |
261 | activeMap: "osm_mapnik", |
262 | tileSize: 256, | |
263 | maxZoom: 18, // The minimum is 0. | |
264 | zoomFactor: null, | |
265 | pos: { | |
266 | x: 35630000.0, // Current position in the map in pixels at the maximum zoom level (18) | |
267 | y: 23670000.0, // The range is 0-67108864 (2^gMap.maxZoom * gMap.tileSize) | |
268 | z: 5 // This could be fractional if supported being between zoom levels. | |
269 | }, | |
d6ff6891 RK |
270 | baseDim: { // Map width, height and tile size in level 18 pixels. |
271 | wid: null, | |
272 | ht: null, | |
273 | tsize: null, | |
274 | }, | |
dda55132 | 275 | |
ac6286bd RK |
276 | get width() { return gMap.gl ? gMap.gl.drawingBufferWidth : gGLMapCanvas.width; }, |
277 | get height() { return gMap.gl ? gMap.gl.drawingBufferHeight : gGLMapCanvas.height; }, | |
278 | ||
edc3be71 RK |
279 | getVertShaderSource: function() { |
280 | return 'attribute vec2 aVertexPosition;\n' + | |
281 | 'attribute vec2 aTextureCoord;\n\n' + | |
282 | 'uniform vec2 uResolution;\n\n' + | |
283 | 'varying highp vec2 vTextureCoord;\n\n' + | |
284 | 'void main(void) {\n' + | |
285 | // convert the rectangle from pixels to -1.0 to +1.0 (clipspace) 0.0 to 1.0 | |
286 | ' vec2 clipSpace = aVertexPosition * 2.0 / uResolution - 1.0;\n' + | |
287 | ' gl_Position = vec4(clipSpace * vec2(1, -1), 0, 1);\n' + | |
288 | ' vTextureCoord = aTextureCoord;\n' + | |
289 | '}'; }, | |
d7310ee2 | 290 | getFragShaderSource: function() { |
edc3be71 RK |
291 | return 'varying highp vec2 vTextureCoord;\n\n' + |
292 | 'uniform sampler2D uImage;\n\n' + | |
293 | 'void main(void) {\n' + | |
294 | ' gl_FragColor = texture2D(uImage, vTextureCoord);\n' + | |
295 | '}'; }, | |
296 | ||
297 | initGL: function() { | |
298 | // When called from the event listener, the "this" reference doesn't work, so use the object name. | |
b3a9fc52 | 299 | console.log("Initializing WebGL..."); |
edc3be71 RK |
300 | if (gMap.gl) { |
301 | gMap.gl.viewport(0, 0, gMap.gl.drawingBufferWidth, gMap.gl.drawingBufferHeight); | |
302 | gMap.gl.clearColor(0.0, 0.0, 0.0, 0.5); // Set clear color to black, fully opaque. | |
303 | gMap.gl.clear(gMap.gl.COLOR_BUFFER_BIT|gMap.gl.DEPTH_BUFFER_BIT); // Clear the color. | |
304 | ||
305 | // Create and initialize the shaders. | |
b3a9fc52 | 306 | console.log("Create and compile shaders..."); |
edc3be71 RK |
307 | var vertShader = gMap.gl.createShader(gMap.gl.VERTEX_SHADER); |
308 | var fragShader = gMap.gl.createShader(gMap.gl.FRAGMENT_SHADER); | |
309 | gMap.gl.shaderSource(vertShader, gMap.getVertShaderSource()); | |
310 | // Compile the shader program. | |
311 | gMap.gl.compileShader(vertShader); | |
312 | // See if it compiled successfully. | |
313 | if (!gMap.gl.getShaderParameter(vertShader, gMap.gl.COMPILE_STATUS)) { | |
314 | console.log("An error occurred compiling the vertex shader: " + gMap.gl.getShaderInfoLog(vertShader)); | |
315 | return null; | |
316 | } | |
317 | gMap.gl.shaderSource(fragShader, gMap.getFragShaderSource()); | |
318 | // Compile the shader program. | |
319 | gMap.gl.compileShader(fragShader); | |
320 | // See if it compiled successfully. | |
321 | if (!gMap.gl.getShaderParameter(fragShader, gMap.gl.COMPILE_STATUS)) { | |
322 | console.log("An error occurred compiling the fragment shader: " + gMap.gl.getShaderInfoLog(fragShader)); | |
323 | return null; | |
324 | } | |
ecde0af2 | 325 | |
b3a9fc52 | 326 | console.log("Create and link shader program..."); |
edc3be71 RK |
327 | gMap.glShaderProgram = gMap.gl.createProgram(); |
328 | gMap.gl.attachShader(gMap.glShaderProgram, vertShader); | |
329 | gMap.gl.attachShader(gMap.glShaderProgram, fragShader); | |
330 | gMap.gl.linkProgram(gMap.glShaderProgram); | |
331 | // If creating the shader program failed, alert | |
332 | if (!gMap.gl.getProgramParameter(gMap.glShaderProgram, gMap.gl.LINK_STATUS)) { | |
333 | alert("Unable to initialize the shader program."); | |
334 | } | |
335 | gMap.gl.useProgram(gMap.glShaderProgram); | |
336 | // Get locations of the attributes. | |
337 | gMap.glVertexPositionAttr = gMap.gl.getAttribLocation(gMap.glShaderProgram, "aVertexPosition"); | |
338 | gMap.glTextureCoordAttr = gMap.gl.getAttribLocation(gMap.glShaderProgram, "aTextureCoord"); | |
339 | gMap.glResolutionAttr = gMap.gl.getUniformLocation(gMap.glShaderProgram, "uResolution"); | |
340 | ||
b3a9fc52 | 341 | console.log("Set up vertex buffer..."); |
edc3be71 RK |
342 | var tileVerticesBuffer = gMap.gl.createBuffer(); |
343 | gMap.gl.bindBuffer(gMap.gl.ARRAY_BUFFER, tileVerticesBuffer); | |
344 | // The vertices are the coordinates of the corner points of the square. | |
345 | var vertices = [ | |
346 | 0.0, 0.0, | |
347 | 1.0, 0.0, | |
348 | 0.0, 1.0, | |
349 | 0.0, 1.0, | |
350 | 1.0, 0.0, | |
351 | 1.0, 1.0, | |
352 | ]; | |
353 | gMap.gl.bufferData(gMap.gl.ARRAY_BUFFER, new Float32Array(vertices), gMap.gl.STATIC_DRAW); | |
354 | gMap.gl.enableVertexAttribArray(gMap.glTextureCoordAttr); | |
355 | gMap.gl.vertexAttribPointer(gMap.glTextureCoordAttr, 2, gMap.gl.FLOAT, false, 0, 0); | |
356 | ||
dc047338 | 357 | gMap.loadImageToTexture(gLoadingTile, getTileKey("loading", {x: 0, y: 0, z: 0})); |
edc3be71 RK |
358 | |
359 | gMap.gl.uniform2f(gMap.glResolutionAttr, gGLMapCanvas.width, gGLMapCanvas.height); | |
360 | ||
361 | // Create a buffer for the position of the rectangle corners. | |
b3a9fc52 | 362 | console.log("Set up coord buffer..."); |
edc3be71 RK |
363 | var mapVerticesTextureCoordBuffer = gMap.gl.createBuffer(); |
364 | gMap.gl.bindBuffer(gMap.gl.ARRAY_BUFFER, mapVerticesTextureCoordBuffer); | |
365 | gMap.gl.enableVertexAttribArray(gMap.glVertexPositionAttr); | |
366 | gMap.gl.vertexAttribPointer(gMap.glVertexPositionAttr, 2, gMap.gl.FLOAT, false, 0, 0); | |
d6ff6891 RK |
367 | |
368 | // Call texture cleaning every 30 seconds, for now (is 60 better?). | |
369 | gMap.glTxCleanIntervalID = window.setInterval(gMap.cleanTextures, 30 * 1000); | |
ecde0af2 | 370 | } |
edc3be71 | 371 | |
16e4f664 RK |
372 | if (!gAppInitDone) { |
373 | // We may be called when context was lost and destroyed, | |
374 | // only send event when we are in app startup | |
375 | // (gAppInitDone is set to true right after we return this event). | |
376 | var throwEv = new CustomEvent("mapinit-done"); | |
377 | gAction.dispatchEvent(throwEv); | |
378 | } | |
edc3be71 RK |
379 | }, |
380 | ||
0f6678fa RK |
381 | draw: function() { |
382 | gMap.assembleGL(); | |
ac6286bd | 383 | drawTrack(); |
dda55132 | 384 | }, |
ecde0af2 | 385 | |
0f6678fa | 386 | assembleGL: function() { |
dda55132 | 387 | if (!gMap.gl) { return; } |
dda55132 RK |
388 | |
389 | document.getElementById("zoomLevel").textContent = gMap.pos.z; | |
390 | gMap.zoomFactor = Math.pow(2, gMap.maxZoom - gMap.pos.z); | |
d6ff6891 RK |
391 | gMap.baseDim.wid = gMap.gl.drawingBufferWidth * gMap.zoomFactor; |
392 | gMap.baseDim.ht = gMap.gl.drawingBufferHeight * gMap.zoomFactor; | |
393 | gMap.baseDim.tsize = gMap.tileSize * gMap.zoomFactor; | |
dda55132 | 394 | |
d6ff6891 RK |
395 | var xMin = gMap.pos.x - gMap.baseDim.wid / 2; // Corners of the window in level 18 pixels. |
396 | var yMin = gMap.pos.y - gMap.baseDim.ht / 2; | |
397 | var xMax = gMap.pos.x + gMap.baseDim.wid / 2; | |
398 | var yMax = gMap.pos.y + gMap.baseDim.ht / 2; | |
dda55132 RK |
399 | |
400 | if (gMapPrefsLoaded && mainDB) | |
401 | gPrefs.set("position", gMap.pos); | |
402 | ||
dda55132 | 403 | // Go through all the tiles in the map, find out if to draw them and do so. |
d6ff6891 RK |
404 | for (var x = Math.floor(xMin / gMap.baseDim.tsize); x < Math.ceil(xMax / gMap.baseDim.tsize); x++) { |
405 | for (var y = Math.floor(yMin / gMap.baseDim.tsize); y < Math.ceil(yMax / gMap.baseDim.tsize); y++) { | |
0f6678fa RK |
406 | // Only go to loading step if we haven't loaded the texture. |
407 | var coords = {x: x, y: y, z: gMap.pos.z}; | |
408 | var tileKey = getTileKey(gMap.activeMap, normalizeCoords(coords)); | |
dc047338 | 409 | if (!gMap.glTextures[tileKey]) { |
dda55132 | 410 | // Initiate loading/drawing of the actual tile. |
0f6678fa | 411 | gTileService.get(gMap.activeMap, coords, |
b9707ee0 | 412 | function(aImage, aStyle, aCoords, aTileKey) { |
0f6678fa | 413 | // Only actually load if this still applies for the current view. |
dda55132 | 414 | if ((aStyle == gMap.activeMap) && (aCoords.z == gMap.pos.z)) { |
0f6678fa RK |
415 | var URL = window.URL; |
416 | var imgURL = URL.createObjectURL(aImage); | |
417 | var imgObj = new Image(); | |
418 | imgObj.onload = function() { | |
dc047338 | 419 | gMap.loadImageToTexture(imgObj, aTileKey); |
5dd2ab70 RK |
420 | if (document.hidden != true) { // Only draw if we're actually visible. |
421 | window.requestAnimationFrame(function(aTimestamp) { gMap.drawGL() }); | |
422 | } | |
0f6678fa | 423 | URL.revokeObjectURL(imgURL); |
dda55132 | 424 | } |
0f6678fa | 425 | imgObj.src = imgURL; |
dda55132 RK |
426 | } |
427 | }); | |
dda55132 RK |
428 | } |
429 | } | |
430 | } | |
5dd2ab70 RK |
431 | if (document.hidden != true) { // Only draw if we're actually visible. |
432 | window.requestAnimationFrame(function(aTimestamp) { gMap.drawGL() }); | |
433 | } | |
b9707ee0 RK |
434 | }, |
435 | ||
436 | drawGL: function() { | |
d6ff6891 RK |
437 | var xMin = gMap.pos.x - gMap.baseDim.wid / 2; // Corners of the window in level 18 pixels. |
438 | var yMin = gMap.pos.y - gMap.baseDim.ht / 2; | |
439 | var xMax = gMap.pos.x + gMap.baseDim.wid / 2; | |
440 | var yMax = gMap.pos.y + gMap.baseDim.ht / 2; | |
b9707ee0 | 441 | |
b9707ee0 | 442 | // Go through all the tiles in the map, find out if to draw them and do so. |
d6ff6891 RK |
443 | for (var x = Math.floor(xMin / gMap.baseDim.tsize); x < Math.ceil(xMax / gMap.baseDim.tsize); x++) { |
444 | for (var y = Math.floor(yMin / gMap.baseDim.tsize); y < Math.ceil(yMax / gMap.baseDim.tsize); y++) { | |
445 | // Rounding the pixel offsets ensures we position the tiles precisely. | |
446 | var xoff = Math.round((x * gMap.baseDim.tsize - xMin) / gMap.zoomFactor); | |
447 | var yoff = Math.round((y * gMap.baseDim.tsize - yMin) / gMap.zoomFactor); | |
dc047338 | 448 | // Draw the tile, first find out the actual texture to use. |
b9707ee0 RK |
449 | var norm = normalizeCoords({x: x, y: y, z: gMap.pos.z}); |
450 | var tileKey = getTileKey(gMap.activeMap, norm); | |
dc047338 RK |
451 | if (!gMap.glTextures[tileKey]) { |
452 | tileKey = getTileKey("loading", {x: 0, y: 0, z: 0}); | |
453 | } | |
454 | gMap.drawTileGL(xoff, yoff, tileKey); | |
b9707ee0 RK |
455 | } |
456 | } | |
dda55132 | 457 | }, |
edc3be71 | 458 | |
ac6286bd RK |
459 | resizeAndDraw: function() { |
460 | var viewportWidth = Math.min(window.innerWidth, window.outerWidth); | |
461 | var viewportHeight = Math.min(window.innerHeight, window.outerHeight); | |
462 | if (gGLMapCanvas && gTrackCanvas) { | |
463 | gGLMapCanvas.width = viewportWidth; | |
464 | gGLMapCanvas.height = viewportHeight; | |
465 | gTrackCanvas.width = viewportWidth; | |
466 | gTrackCanvas.height = viewportHeight; | |
467 | if (gMap.gl) { | |
468 | // Size viewport to canvas size. | |
469 | gMap.gl.viewport(0, 0, gMap.gl.drawingBufferWidth, gMap.gl.drawingBufferHeight); | |
470 | // Clear the color. | |
471 | gMap.gl.clear(gMap.gl.COLOR_BUFFER_BIT); | |
472 | // Make sure the vertex shader get the right resolution. | |
473 | gMap.gl.uniform2f(gMap.glResolutionAttr, gGLMapCanvas.width, gGLMapCanvas.height); | |
d6ff6891 RK |
474 | // Prepare recalculation of textures to keep for one zoom level. |
475 | gMap.glTexturesPerZoomLevel = 0; | |
ac6286bd RK |
476 | } |
477 | gMap.draw(); | |
478 | showUI(); | |
479 | } | |
dda55132 RK |
480 | }, |
481 | ||
dc047338 | 482 | drawTileGL: function(aLeft, aRight, aTileKey) { |
b9707ee0 | 483 | gMap.gl.activeTexture(gMap.gl.TEXTURE0); |
dc047338 | 484 | gMap.gl.bindTexture(gMap.gl.TEXTURE_2D, gMap.glTextures[aTileKey]); |
b9707ee0 RK |
485 | // Set uImage to refer to TEXTURE0 |
486 | gMap.gl.uniform1i(gMap.gl.getUniformLocation(gMap.glShaderProgram, "uImage"), 0); | |
dda55132 RK |
487 | var x_start = aLeft; |
488 | var i_width = gMap.tileSize; | |
489 | var y_start = aRight; | |
490 | var i_height = gMap.tileSize; | |
edc3be71 RK |
491 | var textureCoordinates = [ |
492 | x_start, y_start, | |
493 | x_start + i_width, y_start, | |
494 | x_start, y_start + i_height, | |
495 | x_start, y_start + i_height, | |
496 | x_start + i_width, y_start, | |
497 | x_start + i_width, y_start + i_height, | |
498 | ]; | |
499 | gMap.gl.bufferData(gMap.gl.ARRAY_BUFFER, new Float32Array(textureCoordinates), gMap.gl.STATIC_DRAW); | |
edc3be71 RK |
500 | |
501 | // There are 6 indices in textureCoordinates. | |
502 | gMap.gl.drawArrays(gMap.gl.TRIANGLES, 0, 6); | |
e8525b46 RK |
503 | }, |
504 | ||
dc047338 | 505 | loadImageToTexture: function(aImage, aTileKey) { |
e8525b46 | 506 | // Create and bind texture. |
dc047338 RK |
507 | gMap.glTextures[aTileKey] = gMap.gl.createTexture(); |
508 | gMap.gl.bindTexture(gMap.gl.TEXTURE_2D, gMap.glTextures[aTileKey]); | |
e8525b46 RK |
509 | // Set params for how the texture minifies and magnifies (wrap params are not needed as we're power-of-two). |
510 | gMap.gl.texParameteri(gMap.gl.TEXTURE_2D, gMap.gl.TEXTURE_MIN_FILTER, gMap.gl.NEAREST); | |
511 | gMap.gl.texParameteri(gMap.gl.TEXTURE_2D, gMap.gl.TEXTURE_MAG_FILTER, gMap.gl.NEAREST); | |
512 | // Upload the image into the texture. | |
513 | gMap.gl.texImage2D(gMap.gl.TEXTURE_2D, 0, gMap.gl.RGBA, gMap.gl.RGBA, gMap.gl.UNSIGNED_BYTE, aImage); | |
514 | }, | |
d6ff6891 RK |
515 | |
516 | cleanTextures: function() { | |
517 | // Get rid of unneeded textures to save memory. | |
518 | // TODO: Be less aggressive, maybe keep neighboring zoom levels (but x/y coords there are zoom-specific). | |
519 | if (!gMap.glTexturesPerZoomLevel) { | |
520 | // Calculate how many textures we need to keep for one zoom level. | |
521 | // ceil(width/size) gives us the minimum, keep one on either side as well. | |
522 | gMap.glTexturesPerZoomLevel = | |
523 | Math.ceil(gMap.gl.drawingBufferWidth / gMap.tileSize + 2) * | |
524 | Math.ceil(gMap.gl.drawingBufferHeight / gMap.tileSize + 2); | |
525 | console.log("Keeping " + gMap.glTexturesPerZoomLevel + " textures per level"); | |
526 | } | |
527 | if (Object.keys(gMap.glTextures).length > gMap.glTexturesPerZoomLevel) { | |
528 | console.log("Cleaning textures... (have " + Object.keys(gMap.glTextures).length + " atm)"); | |
529 | ||
530 | // Find coordinate ranges for tiles to keep. | |
531 | var tMin = normalizeCoords({x: Math.floor((gMap.pos.x - gMap.baseDim.wid / 2) / gMap.baseDim.tsize) - 1, | |
532 | y: Math.floor((gMap.pos.y - gMap.baseDim.ht / 2) / gMap.baseDim.tsize) - 1, | |
533 | z: gMap.pos.z}); | |
534 | var tMax = normalizeCoords({x: Math.ceil((gMap.pos.x + gMap.baseDim.wid / 2) / gMap.baseDim.tsize) + 1, | |
535 | y: Math.ceil((gMap.pos.y + gMap.baseDim.ht / 2) / gMap.baseDim.tsize) + 1, | |
536 | z: gMap.pos.z}); | |
537 | console.log("In range: " + tMin.x + "," + tMin.y + "," + tMin.z + " - " + tMax.x + "," + tMax.y + "," + tMax.z); | |
bb752fc4 RK |
538 | for (var tileKey in gMap.glTextures) { |
539 | var keyMatches = tileKey.match(/([^:]+)::(\d+),(\d+),(\d+)/); | |
d6ff6891 RK |
540 | if (keyMatches && keyMatches[1] != "loading") { |
541 | var txData = { | |
542 | style: keyMatches[1], | |
543 | x: keyMatches[2], | |
544 | y: keyMatches[3], | |
545 | z: keyMatches[4], | |
546 | } | |
547 | var delTx = false; | |
548 | if (txData.style != gMap.activeMap) { delTx = true; console.log("Different map style: " + txData.style); } | |
549 | if (!delTx && (txData.z < tMin.z || txData.z > tMax.z)) { delTx = true; console.log("Out-of-range zoom: " + txData.z); } | |
550 | if (tMin.x < tMax.x) { | |
551 | if (!delTx && (txData.x < tMin.x || txData.x > tMax.x)) { delTx = true; console.log("Out-of-range X: " + txData.x); } | |
552 | } | |
553 | else { | |
554 | // We are crossing over the 0 coordinate! | |
555 | if (!delTx && (txData.x < tMin.x && txData.x > tMax.x)) { delTx = true; console.log("Out-of-range X: " + txData.x); } | |
556 | } | |
557 | if (tMin.y < tMax.y) { | |
558 | if (!delTx && (txData.y < tMin.y || txData.y > tMax.y)) { delTx = true; console.log("Out-of-range Y: " + txData.y); } | |
559 | } | |
560 | else { | |
561 | // We are crossing over the 0 coordinate! | |
562 | if (!delTx && (txData.y < tMin.y && txData.y > tMax.y)) { delTx = true; console.log("Out-of-range Y: " + txData.y); } | |
563 | } | |
564 | if (delTx) { | |
565 | // Delete texture from GL and from the array we are holding. | |
bb752fc4 RK |
566 | gMap.gl.deleteTexture(gMap.glTextures[tileKey]); |
567 | delete gMap.glTextures[tileKey]; | |
d6ff6891 RK |
568 | } |
569 | } | |
570 | } | |
571 | console.log("Cleaning complete, " + Object.keys(gMap.glTextures).length + " textures left)"); | |
d6ff6891 RK |
572 | } |
573 | }, | |
16e4f664 RK |
574 | |
575 | handleContextLost: function(event) { | |
576 | event.preventDefault(); | |
577 | // GL context is gone, let's reset everything that depends on it. | |
578 | clearInterval(gMap.glTxCleanIntervalID); | |
579 | gMap.glTextures = {}; | |
580 | }, | |
581 | ||
582 | handleContextRestored: function(event) { | |
583 | // When GL context is back, init GL again and draw. | |
584 | gMap.initGL(); | |
585 | gMap.draw(); | |
586 | }, | |
ecde0af2 RK |
587 | } |
588 | ||
b5e49b95 RK |
589 | // Using scale(x, y) together with drawing old data on scaled canvas would be an improvement for zooming. |
590 | // See https://developer.mozilla.org/en-US/docs/Canvas_tutorial/Transformations#Scaling | |
591 | ||
23cd2dcc | 592 | function zoomIn() { |
dda55132 RK |
593 | if (gMap.pos.z < gMap.maxZoom) { |
594 | gMap.pos.z++; | |
ac6286bd | 595 | gMap.draw(); |
23cd2dcc RK |
596 | } |
597 | } | |
598 | ||
599 | function zoomOut() { | |
dda55132 RK |
600 | if (gMap.pos.z > 0) { |
601 | gMap.pos.z--; | |
ac6286bd | 602 | gMap.draw(); |
23cd2dcc RK |
603 | } |
604 | } | |
605 | ||
1222624d RK |
606 | function zoomTo(aTargetLevel) { |
607 | aTargetLevel = parseInt(aTargetLevel); | |
dda55132 RK |
608 | if (aTargetLevel >= 0 && aTargetLevel <= gMap.maxZoom) { |
609 | gMap.pos.z = aTargetLevel; | |
ac6286bd | 610 | gMap.draw(); |
1222624d RK |
611 | } |
612 | } | |
613 | ||
55c4a0b7 | 614 | function gps2xy(aLatitude, aLongitude) { |
dda55132 | 615 | var maxZoomFactor = Math.pow(2, gMap.maxZoom) * gMap.tileSize; |
55c4a0b7 RK |
616 | var convLat = aLatitude * Math.PI / 180; |
617 | var rawY = (1 - Math.log(Math.tan(convLat) + | |
618 | 1 / Math.cos(convLat)) / Math.PI) / 2 * maxZoomFactor; | |
619 | var rawX = (aLongitude + 180) / 360 * maxZoomFactor; | |
620 | return {x: Math.round(rawX), | |
621 | y: Math.round(rawY)}; | |
622 | } | |
623 | ||
624 | function xy2gps(aX, aY) { | |
dda55132 | 625 | var maxZoomFactor = Math.pow(2, gMap.maxZoom) * gMap.tileSize; |
55c4a0b7 RK |
626 | var n = Math.PI - 2 * Math.PI * aY / maxZoomFactor; |
627 | return {latitude: 180 / Math.PI * | |
628 | Math.atan(0.5 * (Math.exp(n) - Math.exp(-n))), | |
629 | longitude: aX / maxZoomFactor * 360 - 180}; | |
630 | } | |
631 | ||
b47b4a65 RK |
632 | function setMapStyle() { |
633 | var mapSel = document.getElementById("mapSelector"); | |
ae9e33a2 | 634 | if (!gWaitCounter && mapSel.selectedIndex >= 0 && gMap.activeMap != mapSel.value) { |
dda55132 | 635 | gMap.activeMap = mapSel.value; |
ae9e33a2 | 636 | gPrefs.set("active_map_style", gMap.activeMap); |
95f49ba7 | 637 | document.getElementById("copyright").innerHTML = |
dda55132 | 638 | gMapStyles[gMap.activeMap].copyright; |
b5c85133 | 639 | showUI(); |
ac6286bd | 640 | gMap.draw(); |
b47b4a65 RK |
641 | } |
642 | } | |
643 | ||
23cd2dcc RK |
644 | // A sane mod function that works for negative numbers. |
645 | // Returns a % b. | |
646 | function mod(a, b) { | |
647 | return ((a % b) + b) % b; | |
648 | } | |
649 | ||
a8634d37 RK |
650 | function normalizeCoords(aCoords) { |
651 | var zoomFactor = Math.pow(2, aCoords.z); | |
652 | return {x: mod(aCoords.x, zoomFactor), | |
653 | y: mod(aCoords.y, zoomFactor), | |
654 | z: aCoords.z}; | |
23cd2dcc RK |
655 | } |
656 | ||
b9707ee0 RK |
657 | function getTileKey(aStyle, aNormalizedCoords) { |
658 | return aStyle + "::" + | |
659 | aNormalizedCoords.x + "," + | |
660 | aNormalizedCoords.y + "," + | |
661 | aNormalizedCoords.z; | |
662 | } | |
663 | ||
23cd2dcc RK |
664 | // Returns true if the tile is outside the current view. |
665 | function isOutsideWindow(t) { | |
666 | var pos = decodeIndex(t); | |
23cd2dcc | 667 | |
dda55132 | 668 | var zoomFactor = Math.pow(2, gMap.maxZoom - pos.z); |
ac6286bd RK |
669 | var wid = gMap.width * zoomFactor; |
670 | var ht = gMap.height * zoomFactor; | |
23cd2dcc | 671 | |
4b1d0915 RK |
672 | pos.x *= zoomFactor; |
673 | pos.y *= zoomFactor; | |
23cd2dcc | 674 | |
dda55132 RK |
675 | var sz = gMap.tileSize * zoomFactor; |
676 | if (pos.x > gMap.pos.x + wid / 2 || pos.y > gMap.pos.y + ht / 2 || | |
677 | pos.x + sz < gMap.pos.x - wid / 2 || pos.y - sz < gMap.pos.y - ht / 2) | |
23cd2dcc RK |
678 | return true; |
679 | return false; | |
680 | } | |
681 | ||
682 | function encodeIndex(x, y, z) { | |
a8634d37 | 683 | var norm = normalizeCoords({x: x, y: y, z: z}); |
23cd2dcc RK |
684 | return norm.x + "," + norm.y + "," + norm.z; |
685 | } | |
686 | ||
687 | function decodeIndex(encodedIdx) { | |
4b1d0915 RK |
688 | var ind = encodedIdx.split(",", 3); |
689 | return {x: ind[0], y: ind[1], z: ind[2]}; | |
23cd2dcc RK |
690 | } |
691 | ||
6ddefbf9 | 692 | function drawTrack() { |
7a076538 | 693 | if (gTrackContext && (document.hidden != true)) { // Only draw if we're actually visible. |
5dd2ab70 RK |
694 | gLastDrawnPoint = null; |
695 | gCurPosMapCache = undefined; | |
696 | gTrackContext.clearRect(0, 0, gTrackCanvas.width, gTrackCanvas.height); | |
697 | if (gTrack.length) { | |
698 | for (var i = 0; i < gTrack.length; i++) { | |
699 | drawTrackPoint(gTrack[i].coords.latitude, gTrack[i].coords.longitude, | |
852bc801 | 700 | (i + 1 >= gTrack.length || gTrack[i+1].beginSegment)); |
5dd2ab70 | 701 | } |
55c4a0b7 | 702 | } |
14e6d3ad | 703 | } |
55c4a0b7 RK |
704 | } |
705 | ||
14e6d3ad | 706 | function drawTrackPoint(aLatitude, aLongitude, lastPoint) { |
55c4a0b7 | 707 | var trackpoint = gps2xy(aLatitude, aLongitude); |
14e6d3ad RK |
708 | // lastPoint is for optimizing (not actually executing the draw until the last) |
709 | trackpoint.optimized = (lastPoint === false); | |
ac6286bd RK |
710 | var mappos = {x: Math.round((trackpoint.x - gMap.pos.x) / gMap.zoomFactor + gMap.width / 2), |
711 | y: Math.round((trackpoint.y - gMap.pos.y) / gMap.zoomFactor + gMap.height / 2)}; | |
14e6d3ad RK |
712 | |
713 | if (!gLastDrawnPoint || !gLastDrawnPoint.optimized) { | |
4b1d0915 RK |
714 | gTrackContext.strokeStyle = gTrackColor; |
715 | gTrackContext.fillStyle = gTrackContext.strokeStyle; | |
716 | gTrackContext.lineWidth = gTrackWidth; | |
717 | gTrackContext.lineCap = "round"; | |
718 | gTrackContext.lineJoin = "round"; | |
14e6d3ad | 719 | } |
852bc801 | 720 | // This breaks optimiziation, so make sure to reset optimization. |
14e6d3ad | 721 | if (!gLastDrawnPoint || gLastDrawnPoint == trackpoint) { |
852bc801 RK |
722 | trackpoint.optimized = false; |
723 | // Close path if one was open. | |
724 | if (gLastDrawnPoint && gLastDrawnPoint.optimized) { | |
4b1d0915 | 725 | gTrackContext.stroke(); |
852bc801 RK |
726 | } |
727 | } | |
728 | if (!gLastDrawnPoint || (gLastDrawnPoint == trackpoint) || !gLastDrawnPoint.optimized) { | |
729 | // Start drawing a segment. | |
4b1d0915 | 730 | gTrackContext.beginPath(); |
4b1d0915 RK |
731 | gTrackContext.arc(mappos.x, mappos.y, |
732 | gTrackContext.lineWidth, 0, Math.PI * 2, false); | |
733 | gTrackContext.fill(); | |
55c4a0b7 RK |
734 | } |
735 | else { | |
852bc801 | 736 | // Continue drawing segment, close if needed. |
4b1d0915 | 737 | gTrackContext.lineTo(mappos.x, mappos.y); |
14e6d3ad | 738 | if (!trackpoint.optimized) |
4b1d0915 | 739 | gTrackContext.stroke(); |
55c4a0b7 | 740 | } |
14e6d3ad | 741 | gLastDrawnPoint = trackpoint; |
23cd2dcc RK |
742 | } |
743 | ||
b054bd48 | 744 | function drawCurrentLocation(trackPoint) { |
4b1d0915 RK |
745 | var locpoint = gps2xy(trackPoint.coords.latitude, trackPoint.coords.longitude); |
746 | var circleRadius = Math.round(gCurLocSize / 2); | |
ac6286bd RK |
747 | var mappos = {x: Math.round((locpoint.x - gMap.pos.x) / gMap.zoomFactor + gMap.width / 2), |
748 | y: Math.round((locpoint.y - gMap.pos.y) / gMap.zoomFactor + gMap.height / 2)}; | |
4b1d0915 RK |
749 | |
750 | undrawCurrentLocation(); | |
b054bd48 RK |
751 | |
752 | // Cache overdrawn area. | |
4b1d0915 RK |
753 | gCurPosMapCache = |
754 | {point: locpoint, | |
755 | radius: circleRadius, | |
756 | data: gTrackContext.getImageData(mappos.x - circleRadius, | |
757 | mappos.y - circleRadius, | |
758 | circleRadius * 2, circleRadius * 2)}; | |
759 | ||
760 | gTrackContext.strokeStyle = gCurLocColor; | |
761 | gTrackContext.fillStyle = gTrackContext.strokeStyle; | |
762 | gTrackContext.beginPath(); | |
763 | gTrackContext.arc(mappos.x, mappos.y, | |
764 | circleRadius, 0, Math.PI * 2, false); | |
765 | gTrackContext.fill(); | |
766 | } | |
767 | ||
768 | function undrawCurrentLocation() { | |
769 | if (gCurPosMapCache) { | |
770 | var oldpoint = gCurPosMapCache.point; | |
ac6286bd RK |
771 | var oldmp = {x: Math.round((oldpoint.x - gMap.pos.x) / gMap.zoomFactor + gMap.width / 2), |
772 | y: Math.round((oldpoint.y - gMap.pos.y) / gMap.zoomFactor + gMap.height / 2)}; | |
4b1d0915 RK |
773 | gTrackContext.putImageData(gCurPosMapCache.data, |
774 | oldmp.x - gCurPosMapCache.radius, | |
775 | oldmp.y - gCurPosMapCache.radius); | |
776 | gCurPosMapCache = undefined; | |
777 | } | |
b054bd48 RK |
778 | } |
779 | ||
7a076538 RK |
780 | function calcTrackDuration() { |
781 | // Get the duration of the track in s. | |
782 | var tDuration = 0; | |
783 | if (gTrack.length > 1) { | |
784 | for (var i = 1; i < gTrack.length; i++) { | |
8f63227b RK |
785 | if (!gTrack[i].beginSegment) { |
786 | tDuration += (gTrack[i].time - gTrack[i-1].time); | |
787 | } | |
7a076538 RK |
788 | } |
789 | } | |
790 | return Math.round(tDuration / 1000); // The timestamps are in ms but we return seconds. | |
791 | } | |
792 | ||
793 | function calcTrackLength() { | |
794 | // Get the length of the track in km. | |
795 | var tLength = 0; | |
796 | if (gTrack.length > 1) { | |
797 | for (var i = 1; i < gTrack.length; i++) { | |
8f63227b RK |
798 | if (!gTrack[i].beginSegment) { |
799 | tLength += getPointDistance(gTrack[i-1].coords, gTrack[i].coords); | |
800 | } | |
7a076538 RK |
801 | } |
802 | } | |
803 | return tLength; | |
804 | } | |
805 | ||
806 | function getPointDistance(aGPSPoint1, aGPSPoint2) { | |
807 | // Get the distance in km between the two given GPS points. | |
808 | // See http://stackoverflow.com/questions/365826/calculate-distance-between-2-gps-coordinates | |
809 | // Earth is almost exactly a sphere and we calculate small distances on the surface, so we can do spherical great-circle math. | |
810 | // Also see http://en.wikipedia.org/wiki/Great-circle_distance | |
811 | var R = 6371; // km | |
812 | var dLat = deg2rad(aGPSPoint2.latitude - aGPSPoint1.latitude); | |
813 | var dLon = deg2rad(aGPSPoint2.longitude - aGPSPoint1.longitude); | |
814 | var lat1 = deg2rad(aGPSPoint1.latitude); | |
815 | var lat2 = deg2rad(aGPSPoint2.latitude); | |
816 | ||
817 | var a = Math.sin(dLat/2) * Math.sin(dLat/2) + | |
818 | Math.sin(dLon/2) * Math.sin(dLon/2) * Math.cos(lat1) * Math.cos(lat2); | |
819 | var c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a)); | |
820 | return R * c; | |
821 | } | |
822 | ||
823 | function deg2rad(aDegreeValue) { | |
824 | // Convert an angle in degrees to radiants. | |
825 | return aDegreeValue * (Math.PI / 180); | |
826 | } | |
827 | ||
23cd2dcc RK |
828 | var mapEvHandler = { |
829 | handleEvent: function(aEvent) { | |
830 | var touchEvent = aEvent.type.indexOf('touch') != -1; | |
831 | ||
306ae634 RK |
832 | if (touchEvent) { |
833 | aEvent.stopPropagation(); | |
834 | } | |
835 | ||
8389557a RK |
836 | // Bail out if the event is happening on an input. |
837 | if (aEvent.target.tagName.toLowerCase() == "input") | |
838 | return; | |
839 | ||
1222624d RK |
840 | // Bail out on unwanted map moves, but not zoom or keyboard events. |
841 | if (aEvent.type.indexOf("mouse") === 0 || aEvent.type.indexOf("touch") === 0) { | |
23cd2dcc RK |
842 | // Bail out if this is neither a touch nor left-click. |
843 | if (!touchEvent && aEvent.button != 0) | |
844 | return; | |
845 | ||
846 | // Bail out if the started touch can't be found. | |
4b12da3a RK |
847 | if (touchEvent && gDragging && |
848 | !aEvent.changedTouches.identifiedTouch(gDragTouchID)) | |
23cd2dcc RK |
849 | return; |
850 | } | |
851 | ||
852 | var coordObj = touchEvent ? | |
4b12da3a | 853 | aEvent.changedTouches.identifiedTouch(gDragTouchID) : |
23cd2dcc RK |
854 | aEvent; |
855 | ||
856 | switch (aEvent.type) { | |
857 | case "mousedown": | |
858 | case "touchstart": | |
859 | if (touchEvent) { | |
517c0099 RK |
860 | if (aEvent.targetTouches.length == 2) { |
861 | gPinchStartWidth = Math.sqrt( | |
862 | Math.pow(aEvent.targetTouches.item(1).clientX - | |
863 | aEvent.targetTouches.item(0).clientX, 2) + | |
864 | Math.pow(aEvent.targetTouches.item(1).clientY - | |
865 | aEvent.targetTouches.item(0).clientY, 2) | |
866 | ); | |
867 | } | |
4b12da3a RK |
868 | gDragTouchID = aEvent.changedTouches.item(0).identifier; |
869 | coordObj = aEvent.changedTouches.identifiedTouch(gDragTouchID); | |
23cd2dcc | 870 | } |
ac6286bd RK |
871 | var x = coordObj.clientX - gGLMapCanvas.offsetLeft; |
872 | var y = coordObj.clientY - gGLMapCanvas.offsetTop; | |
b395419b | 873 | |
23cd2dcc RK |
874 | if (touchEvent || aEvent.button === 0) { |
875 | gDragging = true; | |
876 | } | |
877 | gLastMouseX = x; | |
878 | gLastMouseY = y; | |
7a549148 | 879 | showUI(); |
23cd2dcc RK |
880 | break; |
881 | case "mousemove": | |
882 | case "touchmove": | |
517c0099 RK |
883 | if (touchEvent && aEvent.targetTouches.length == 2) { |
884 | curPinchStartWidth = Math.sqrt( | |
885 | Math.pow(aEvent.targetTouches.item(1).clientX - | |
886 | aEvent.targetTouches.item(0).clientX, 2) + | |
887 | Math.pow(aEvent.targetTouches.item(1).clientY - | |
888 | aEvent.targetTouches.item(0).clientY, 2) | |
889 | ); | |
003d56f8 RK |
890 | if (!gPinchStartWidth) |
891 | gPinchStartWidth = curPinchStartWidth; | |
d07d7abc | 892 | |
517c0099 RK |
893 | if (gPinchStartWidth / curPinchStartWidth > 1.7 || |
894 | gPinchStartWidth / curPinchStartWidth < 0.6) { | |
dda55132 RK |
895 | var newZoomLevel = gMap.pos.z + (gPinchStartWidth < curPinchStartWidth ? 1 : -1); |
896 | if ((newZoomLevel >= 0) && (newZoomLevel <= gMap.maxZoom)) { | |
517c0099 RK |
897 | // Calculate new center of the map - preserve middle of pinch. |
898 | // This means that pixel distance between old center and middle | |
899 | // must equal pixel distance of new center and middle. | |
900 | var x = (aEvent.targetTouches.item(1).clientX + | |
901 | aEvent.targetTouches.item(0).clientX) / 2 - | |
ac6286bd | 902 | gGLMapCanvas.offsetLeft; |
517c0099 RK |
903 | var y = (aEvent.targetTouches.item(1).clientY + |
904 | aEvent.targetTouches.item(0).clientY) / 2 - | |
ac6286bd | 905 | gGLMapCanvas.offsetTop; |
517c0099 RK |
906 | |
907 | // Zoom factor after this action. | |
dda55132 | 908 | var newZoomFactor = Math.pow(2, gMap.maxZoom - newZoomLevel); |
ac6286bd RK |
909 | gMap.pos.x -= (x - gMap.width / 2) * (newZoomFactor - gMap.zoomFactor); |
910 | gMap.pos.y -= (y - gMap.height / 2) * (newZoomFactor - gMap.zoomFactor); | |
517c0099 RK |
911 | |
912 | if (gPinchStartWidth < curPinchStartWidth) | |
913 | zoomIn(); | |
914 | else | |
915 | zoomOut(); | |
003d56f8 RK |
916 | |
917 | // Reset pinch start width and start another pinch gesture. | |
918 | gPinchStartWidth = null; | |
517c0099 RK |
919 | } |
920 | } | |
d07d7abc | 921 | // If we are in a pinch, do not drag. |
517c0099 RK |
922 | break; |
923 | } | |
ac6286bd RK |
924 | var x = coordObj.clientX - gGLMapCanvas.offsetLeft; |
925 | var y = coordObj.clientY - gGLMapCanvas.offsetTop; | |
23cd2dcc RK |
926 | if (gDragging === true) { |
927 | var dX = x - gLastMouseX; | |
928 | var dY = y - gLastMouseY; | |
dda55132 RK |
929 | gMap.pos.x -= dX * gMap.zoomFactor; |
930 | gMap.pos.y -= dY * gMap.zoomFactor; | |
0f6678fa | 931 | gMap.draw(); |
7a549148 | 932 | showUI(); |
23cd2dcc RK |
933 | } |
934 | gLastMouseX = x; | |
935 | gLastMouseY = y; | |
936 | break; | |
937 | case "mouseup": | |
938 | case "touchend": | |
d07d7abc | 939 | gPinchStartWidth = null; |
23cd2dcc | 940 | gDragging = false; |
7a549148 | 941 | showUI(); |
23cd2dcc RK |
942 | break; |
943 | case "mouseout": | |
944 | case "touchcancel": | |
945 | case "touchleave": | |
946 | //gDragging = false; | |
947 | break; | |
5fb31b29 RK |
948 | case "wheel": |
949 | // If we'd want pixels, we'd need to calc up using aEvent.deltaMode. | |
950 | // See https://developer.mozilla.org/en-US/docs/Mozilla_event_reference/wheel | |
951 | ||
952 | // Only accept (non-null) deltaY values | |
953 | if (!aEvent.deltaY) | |
954 | break; | |
23cd2dcc | 955 | |
55c4a0b7 RK |
956 | // Debug output: "coordinates" of the point the mouse was over. |
957 | /* | |
ac6286bd RK |
958 | var ptCoord = {x: gMap.pos.x + (x - gMap.width / 2) * gMap.zoomFactor, |
959 | y: gMap.pos.y + (x - gMap.height / 2) * gMap.zoomFactor}; | |
55c4a0b7 RK |
960 | var gpsCoord = xy2gps(ptCoord.x, ptCoord.y); |
961 | var pt2Coord = gps2xy(gpsCoord.latitude, gpsCoord.longitude); | |
915d4271 RK |
962 | console.log(ptCoord.x + "/" + ptCoord.y + " - " + |
963 | gpsCoord.latitude + "/" + gpsCoord.longitude + " - " + | |
964 | pt2Coord.x + "/" + pt2Coord.y); | |
55c4a0b7 | 965 | */ |
4b1d0915 | 966 | |
dda55132 RK |
967 | var newZoomLevel = gMap.pos.z + (aEvent.deltaY < 0 ? 1 : -1); |
968 | if ((newZoomLevel >= 0) && (newZoomLevel <= gMap.maxZoom)) { | |
4b1d0915 RK |
969 | // Calculate new center of the map - same point stays under the mouse. |
970 | // This means that the pixel distance between the old center and point | |
971 | // must equal the pixel distance of the new center and that point. | |
ac6286bd RK |
972 | var x = coordObj.clientX - gGLMapCanvas.offsetLeft; |
973 | var y = coordObj.clientY - gGLMapCanvas.offsetTop; | |
4b1d0915 RK |
974 | |
975 | // Zoom factor after this action. | |
dda55132 | 976 | var newZoomFactor = Math.pow(2, gMap.maxZoom - newZoomLevel); |
ac6286bd RK |
977 | gMap.pos.x -= (x - gMap.width / 2) * (newZoomFactor - gMap.zoomFactor); |
978 | gMap.pos.y -= (y - gMap.height / 2) * (newZoomFactor - gMap.zoomFactor); | |
4b1d0915 | 979 | |
5fb31b29 | 980 | if (aEvent.deltaY < 0) |
4b1d0915 | 981 | zoomIn(); |
5fb31b29 | 982 | else |
4b1d0915 RK |
983 | zoomOut(); |
984 | } | |
23cd2dcc | 985 | break; |
1222624d RK |
986 | case "keydown": |
987 | // Allow keyboard control to move and zoom the map. | |
988 | // Should use aEvent.key instead of aEvent.which but needs bug 680830. | |
989 | // See https://developer.mozilla.org/en-US/docs/DOM/Mozilla_event_reference/keydown | |
990 | var dX = 0; | |
991 | var dY = 0; | |
992 | switch (aEvent.which) { | |
993 | case 39: // right | |
dda55132 | 994 | dX = -gMap.tileSize / 2; |
1222624d RK |
995 | break; |
996 | case 37: // left | |
dda55132 | 997 | dX = gMap.tileSize / 2; |
1222624d RK |
998 | break; |
999 | case 38: // up | |
dda55132 | 1000 | dY = gMap.tileSize / 2; |
1222624d RK |
1001 | break; |
1002 | case 40: // down | |
dda55132 | 1003 | dY = -gMap.tileSize / 2; |
1222624d RK |
1004 | break; |
1005 | case 87: // w | |
1006 | case 107: // + (numpad) | |
1007 | case 171: // + (normal key) | |
1008 | zoomIn(); | |
1009 | break; | |
1010 | case 83: // s | |
1011 | case 109: // - (numpad) | |
1012 | case 173: // - (normal key) | |
1013 | zoomOut(); | |
1014 | break; | |
1015 | case 48: // 0 | |
1016 | case 49: // 1 | |
1017 | case 50: // 2 | |
1018 | case 51: // 3 | |
1019 | case 52: // 4 | |
1020 | case 53: // 5 | |
1021 | case 54: // 6 | |
1022 | case 55: // 7 | |
1023 | case 56: // 8 | |
1024 | zoomTo(aEvent.which - 38); | |
1025 | break; | |
1026 | case 57: // 9 | |
1027 | zoomTo(9); | |
1028 | break; | |
1029 | case 96: // 0 (numpad) | |
1030 | case 97: // 1 (numpad) | |
1031 | case 98: // 2 (numpad) | |
1032 | case 99: // 3 (numpad) | |
1033 | case 100: // 4 (numpad) | |
1034 | case 101: // 5 (numpad) | |
1035 | case 102: // 6 (numpad) | |
1036 | case 103: // 7 (numpad) | |
1037 | case 104: // 8 (numpad) | |
1038 | zoomTo(aEvent.which - 86); | |
1039 | break; | |
1040 | case 105: // 9 (numpad) | |
1041 | zoomTo(9); | |
1042 | break; | |
1043 | default: // not supported | |
1044 | console.log("key not supported: " + aEvent.which); | |
1045 | break; | |
1046 | } | |
1047 | ||
1048 | // Move if needed. | |
1049 | if (dX || dY) { | |
dda55132 RK |
1050 | gMap.pos.x -= dX * gMap.zoomFactor; |
1051 | gMap.pos.y -= dY * gMap.zoomFactor; | |
0f6678fa | 1052 | gMap.draw(); |
1222624d RK |
1053 | } |
1054 | break; | |
23cd2dcc RK |
1055 | } |
1056 | } | |
1057 | }; | |
55c4a0b7 | 1058 | |
5dd2ab70 RK |
1059 | function visibilityEvHandler() { |
1060 | // Immediately draw if we just got visible. | |
1061 | if (document.hidden != true) { | |
1062 | gMap.draw(); | |
1063 | } | |
1064 | // No need to handle the event where we become invisible as we care only draw | |
1065 | // when we are visible anyhow. | |
1066 | } | |
1067 | ||
993fd081 | 1068 | var geofake = { |
55c4a0b7 | 1069 | tracking: false, |
4b12da3a | 1070 | lastPos: {x: undefined, y: undefined}, |
55c4a0b7 RK |
1071 | watchPosition: function(aSuccessCallback, aErrorCallback, aPrefObject) { |
1072 | this.tracking = true; | |
1073 | var watchCall = function() { | |
4b12da3a RK |
1074 | // calc new position in lat/lon degrees |
1075 | // 90° on Earth surface are ~10,000 km at the equator, | |
1076 | // so try moving at most 10m at a time | |
1077 | if (geofake.lastPos.x) | |
1078 | geofake.lastPos.x += (Math.random() - .5) * 90 / 1000000 | |
1079 | else | |
1080 | geofake.lastPos.x = 48.208174 | |
1081 | if (geofake.lastPos.y) | |
1082 | geofake.lastPos.y += (Math.random() - .5) * 90 / 1000000 | |
1083 | else | |
1084 | geofake.lastPos.y = 16.373819 | |
55c4a0b7 | 1085 | aSuccessCallback({timestamp: Date.now(), |
4b12da3a RK |
1086 | coords: {latitude: geofake.lastPos.x, |
1087 | longitude: geofake.lastPos.y, | |
55c4a0b7 RK |
1088 | accuracy: 20}}); |
1089 | if (geofake.tracking) | |
1090 | setTimeout(watchCall, 1000); | |
1091 | }; | |
1092 | setTimeout(watchCall, 1000); | |
1093 | return "foo"; | |
1094 | }, | |
1095 | clearWatch: function(aID) { | |
1096 | this.tracking = false; | |
1097 | } | |
1098 | } | |
1099 | ||
3610c22d RK |
1100 | function setCentering(aCheckbox) { |
1101 | if (gMapPrefsLoaded && mainDB) | |
1102 | gPrefs.set("center_map", aCheckbox.checked); | |
1103 | gCenterPosition = aCheckbox.checked; | |
1104 | } | |
1105 | ||
1106 | function setTracking(aCheckbox) { | |
1107 | if (gMapPrefsLoaded && mainDB) | |
1108 | gPrefs.set("tracking_enabled", aCheckbox.checked); | |
1109 | if (aCheckbox.checked) | |
1110 | startTracking(); | |
1111 | else | |
1112 | endTracking(); | |
1113 | } | |
1114 | ||
55c4a0b7 | 1115 | function startTracking() { |
31f0fe16 | 1116 | if (gGeolocation) { |
68afcd96 RK |
1117 | gActionLabel.textContent = "Establishing Position"; |
1118 | gAction.style.display = "block"; | |
4b12da3a | 1119 | gGeoWatchID = gGeolocation.watchPosition( |
55c4a0b7 | 1120 | function(position) { |
68afcd96 RK |
1121 | if (gActionLabel.textContent) { |
1122 | gActionLabel.textContent = ""; | |
1123 | gAction.style.display = "none"; | |
1124 | } | |
55c4a0b7 | 1125 | // Coords spec: https://developer.mozilla.org/en/XPCOM_Interface_Reference/NsIDOMGeoPositionCoords |
993fd081 | 1126 | var tPoint = {time: position.timestamp, |
31f0fe16 RK |
1127 | coords: {latitude: position.coords.latitude, |
1128 | longitude: position.coords.longitude, | |
1129 | altitude: position.coords.altitude, | |
1130 | accuracy: position.coords.accuracy, | |
1131 | altitudeAccuracy: position.coords.altitudeAccuracy, | |
1132 | heading: position.coords.heading, | |
1133 | speed: position.coords.speed}, | |
993fd081 | 1134 | beginSegment: !gLastTrackPoint}; |
b054bd48 RK |
1135 | // Only add point to track is accuracy is good enough. |
1136 | if (tPoint.coords.accuracy < gMinTrackAccuracy) { | |
1137 | gLastTrackPoint = tPoint; | |
1138 | gTrack.push(tPoint); | |
1139 | try { gTrackStore.push(tPoint); } catch(e) {} | |
1140 | var redrawn = false; | |
1141 | if (gCenterPosition) { | |
1142 | var posCoord = gps2xy(position.coords.latitude, | |
1143 | position.coords.longitude); | |
ac6286bd RK |
1144 | if (Math.abs(gMap.pos.x - posCoord.x) > gMap.width * gMap.zoomFactor / 4 || |
1145 | Math.abs(gMap.pos.y - posCoord.y) > gMap.height * gMap.zoomFactor / 4) { | |
dda55132 RK |
1146 | gMap.pos.x = posCoord.x; |
1147 | gMap.pos.y = posCoord.y; | |
ac6286bd | 1148 | gMap.draw(); // This draws the current point as well. |
b054bd48 RK |
1149 | redrawn = true; |
1150 | } | |
99631a75 | 1151 | } |
b054bd48 | 1152 | if (!redrawn) |
4b1d0915 | 1153 | undrawCurrentLocation(); |
b054bd48 | 1154 | drawTrackPoint(position.coords.latitude, position.coords.longitude, true); |
05c21757 | 1155 | } |
b054bd48 | 1156 | drawCurrentLocation(tPoint); |
55c4a0b7 RK |
1157 | }, |
1158 | function(error) { | |
1159 | // Ignore erros for the moment, but this is good for debugging. | |
1160 | // See https://developer.mozilla.org/en/Using_geolocation#Handling_errors | |
915d4271 RK |
1161 | if (gDebug) |
1162 | console.log(error.message); | |
55c4a0b7 RK |
1163 | }, |
1164 | {enableHighAccuracy: true} | |
1165 | ); | |
1166 | } | |
1167 | } | |
1168 | ||
1169 | function endTracking() { | |
68afcd96 RK |
1170 | if (gActionLabel.textContent) { |
1171 | gActionLabel.textContent = ""; | |
1172 | gAction.style.display = "none"; | |
1173 | } | |
55c4a0b7 | 1174 | if (gGeoWatchID) { |
4b12da3a | 1175 | gGeolocation.clearWatch(gGeoWatchID); |
55c4a0b7 RK |
1176 | } |
1177 | } | |
993fd081 RK |
1178 | |
1179 | function clearTrack() { | |
1180 | gTrack = []; | |
1181 | gTrackStore.clear(); | |
6ddefbf9 | 1182 | drawTrack(); |
993fd081 | 1183 | } |
a8634d37 RK |
1184 | |
1185 | var gTileService = { | |
1186 | objStore: "tilecache", | |
1187 | ||
5d67397a | 1188 | ageLimit: 14 * 86400 * 1000, // 2 weeks (in ms) |
3431f496 | 1189 | |
a8634d37 RK |
1190 | get: function(aStyle, aCoords, aCallback) { |
1191 | var norm = normalizeCoords(aCoords); | |
b9707ee0 | 1192 | var dbkey = getTileKey(aStyle, norm); |
a8634d37 RK |
1193 | this.getDBCache(dbkey, function(aResult, aEvent) { |
1194 | if (aResult) { | |
1195 | // We did get a cached object. | |
e8525b46 | 1196 | aCallback(aResult.image, aStyle, aCoords, dbkey); |
3431f496 | 1197 | // Look at the timestamp and return if it's not too old. |
5d67397a | 1198 | if (aResult.timestamp + gTileService.ageLimit > Date.now()) |
3431f496 RK |
1199 | return; |
1200 | // Reload cached tile otherwise. | |
5d67397a RK |
1201 | var oldDate = new Date(aResult.timestamp); |
1202 | console.log("reload cached tile: " + dbkey + " - " + oldDate.toUTCString()); | |
a8634d37 | 1203 | } |
3431f496 RK |
1204 | // Retrieve image from the web and store it in the cache. |
1205 | var XHR = new XMLHttpRequest(); | |
1206 | XHR.open("GET", | |
1207 | gMapStyles[aStyle].url | |
1208 | .replace("{x}", norm.x) | |
1209 | .replace("{y}", norm.y) | |
1210 | .replace("{z}", norm.z) | |
5ed2937e | 1211 | .replace("[a-c]", String.fromCharCode(97 + Math.floor(Math.random() * 3))) |
ca77d52d | 1212 | .replace("[a-d]", String.fromCharCode(97 + Math.floor(Math.random() * 4))) |
5ed2937e | 1213 | .replace("[1-4]", 1 + Math.floor(Math.random() * 4)), |
3431f496 RK |
1214 | true); |
1215 | XHR.responseType = "blob"; | |
1216 | XHR.addEventListener("load", function () { | |
1217 | if (XHR.status === 200) { | |
1218 | var blob = XHR.response; | |
e8525b46 | 1219 | aCallback(blob, aStyle, aCoords, dbkey); |
6d7cdcf6 | 1220 | gTileService.setDBCache(dbkey, {image: blob, timestamp: Date.now()}); |
3431f496 RK |
1221 | } |
1222 | }, false); | |
1223 | XHR.send(); | |
a8634d37 RK |
1224 | }); |
1225 | }, | |
1226 | ||
1227 | getDBCache: function(aKey, aCallback) { | |
1228 | if (!mainDB) | |
1229 | return; | |
1230 | var transaction = mainDB.transaction([this.objStore]); | |
1231 | var request = transaction.objectStore(this.objStore).get(aKey); | |
1232 | request.onsuccess = function(event) { | |
1233 | aCallback(request.result, event); | |
1234 | }; | |
1235 | request.onerror = function(event) { | |
1236 | // Errors can be handled here. | |
1237 | aCallback(undefined, event); | |
1238 | }; | |
1239 | }, | |
1240 | ||
1241 | setDBCache: function(aKey, aValue, aCallback) { | |
1242 | if (!mainDB) | |
1243 | return; | |
1244 | var success = false; | |
1245 | var transaction = mainDB.transaction([this.objStore], "readwrite"); | |
1246 | var objStore = transaction.objectStore(this.objStore); | |
1247 | var request = objStore.put(aValue, aKey); | |
1248 | request.onsuccess = function(event) { | |
1249 | success = true; | |
1250 | if (aCallback) | |
1251 | aCallback(success, event); | |
1252 | }; | |
1253 | request.onerror = function(event) { | |
1254 | // Errors can be handled here. | |
1255 | if (aCallback) | |
1256 | aCallback(success, event); | |
1257 | }; | |
1258 | }, | |
1259 | ||
1260 | unsetDBCache: function(aKey, aCallback) { | |
1261 | if (!mainDB) | |
1262 | return; | |
1263 | var success = false; | |
1264 | var transaction = mainDB.transaction([this.objStore], "readwrite"); | |
1265 | var request = transaction.objectStore(this.objStore).delete(aKey); | |
1266 | request.onsuccess = function(event) { | |
1267 | success = true; | |
1268 | if (aCallback) | |
1269 | aCallback(success, event); | |
1270 | }; | |
1271 | request.onerror = function(event) { | |
1272 | // Errors can be handled here. | |
1273 | if (aCallback) | |
1274 | aCallback(success, event); | |
1275 | } | |
3431f496 RK |
1276 | }, |
1277 | ||
1278 | clearDB: function(aCallback) { | |
1279 | if (!mainDB) | |
1280 | return; | |
1281 | var success = false; | |
1282 | var transaction = mainDB.transaction([this.objStore], "readwrite"); | |
1283 | var request = transaction.objectStore(this.objStore).clear(); | |
1284 | request.onsuccess = function(event) { | |
1285 | success = true; | |
1286 | if (aCallback) | |
1287 | aCallback(success, event); | |
1288 | }; | |
1289 | request.onerror = function(event) { | |
1290 | // Errors can be handled here. | |
1291 | if (aCallback) | |
1292 | aCallback(success, event); | |
1293 | } | |
a8634d37 RK |
1294 | } |
1295 | }; |