From b47b4a65e0de47e607e0f675402e69239d012ad6 Mon Sep 17 00:00:00 2001 From: Robert Kaiser Date: Sun, 18 Dec 2011 17:47:14 +0100 Subject: [PATCH] add zooming and map style selection --- index.html | 23 ++++++++++++++++----- js/map.js | 54 ++++++++++++++++++++++++++++++++++-------------- js/ui.js | 25 ++++++++++++++++++++++ style/lantea.css | 34 ++++++++++++++++++++++++++++++ 4 files changed, 116 insertions(+), 20 deletions(-) diff --git a/index.html b/index.html index 5b4cfe6..65ec071 100644 --- a/index.html +++ b/index.html @@ -39,21 +39,34 @@ - Lantea + Lantea Map -

Lantea

Lantea Map

+ +

+ +
+ +

Settings +Map style: + +

\ No newline at end of file diff --git a/js/map.js b/js/map.js index 2a65f78..869ce2c 100644 --- a/js/map.js +++ b/js/map.js @@ -40,7 +40,22 @@ var gCanvas, gContext; var gTileSize = 256; var gMaxZoom = 18; // The minimum is 0. -//drawMap(); +var gMapStyles = { + // OSM tile usage policy: http://wiki.openstreetmap.org/wiki/Tile_usage_policy + osm_mapnik: + {name: "OpenStreetMap (Mapnik)", + url: "http://tile.openstreetmap.org/{z}/{x}/{y}.png", + copyright: 'Map data and imagery © OpenStreetMap contributors, CC-BY-SA'}, + osm_tilesathome: + {name: "OpenStreetMap (OSMarender)", + url: "http://tah.openstreetmap.org/Tiles/tile/{z}/{x}/{y}.png", + copyright: 'Map data and imagery © OpenStreetMap contributors, CC-BY-SA'}, + mapquest_open: + {name: "MapQuest Open", + url: "http://otile1.mqcdn.com/tiles/1.0.0/osm/{z}/{x}/{y}.png", + copyright: 'Data, imagery and map information provided by MapQuest, OpenStreetMap and contributors, CC-BY-SA.'} +}; +var gActiveMap = "osm_mapnik"; var gPos = {x: 35630000.0, // Current position in the map in pixels at the maximum zoom level (18) y: 23670000.0, // The range is 0-67108864 (2^gMaxZoom * gTileSize) @@ -55,9 +70,11 @@ var gTiles = {}; var gDragging = false; var gZoomTouchID; -window.onload = function() { +function initMap() { gCanvas = document.getElementById("map"); gContext = gCanvas.getContext("2d"); + if (!gActiveMap) + gActiveMap = "osm_mapnik"; gCanvas.addEventListener("mouseup", mapEvHandler, false); gCanvas.addEventListener("mousemove", mapEvHandler, false); @@ -73,11 +90,8 @@ window.onload = function() { gCanvas.addEventListener("DOMMouseScroll", mapEvHandler, false); gCanvas.addEventListener("mousewheel", mapEvHandler, false); - resizeAndDraw(); -} - -window.onresize = function() { - resizeAndDraw(); + document.getElementById("copyright").innerHTML = + gMapStyles[gActiveMap].copyright; } function resizeAndDraw() { @@ -85,7 +99,7 @@ function resizeAndDraw() { var viewportHeight = window.innerHeight; var canvasWidth = viewportWidth * 0.98; - var canvasHeight = (viewportHeight-110) * 0.98; + var canvasHeight = (viewportHeight - 100) * 0.98; gCanvas.style.position = "fixed"; gCanvas.width = canvasWidth; gCanvas.height = canvasHeight; @@ -106,6 +120,15 @@ function zoomOut() { } } +function setMapStyle() { + var mapSel = document.getElementById("mapSelector"); + if (mapSel.selectedIndex >= 0 && gActiveMap != mapSel.value) { + gActiveMap = mapSel.value; + gTiles = {}; + drawMap(); + } +} + // A sane mod function that works for negative numbers. // Returns a % b. function mod(a, b) { @@ -120,8 +143,9 @@ function normaliseIndices(x, y, z) { function tileURL(x, y, z) { var norm = normaliseIndices(x, y, z); - var url = "http://tile.openstreetmap.org/" + norm.z + "/" + norm.x + "/" + norm.y + ".png"; - return url; + return gMapStyles[gActiveMap].url.replace("{x}", norm.x) + .replace("{y}", norm.y) + .replace("{z}", norm.z); } // Returns true if the tile is outside the current view. @@ -162,7 +186,7 @@ function drawMap() { var z = Math.round(gPos.z); var wid = gCanvas.width * Math.pow(2, gMaxZoom - z); // Width in level 18 pixels. var ht = gCanvas.height * Math.pow(2, gMaxZoom - z); // Height in level 18 pixels. - var sz = gTileSize * Math.pow(2, gMaxZoom - z); // Tile size in level 18 pixels. + var size = gTileSize * Math.pow(2, gMaxZoom - z); // Tile size in level 18 pixels. var xMin = gPos.x - wid / 2; // Corners of the window in level 18 pixels. var yMin = gPos.y - ht / 2; @@ -170,10 +194,10 @@ function drawMap() { var yMax = gPos.y + ht / 2; // Go through all the tiles we want. If any of them aren't loaded or being loaded, do so. - for (var x = Math.floor(xMin / sz); x < Math.ceil(xMax / sz); ++x) { - for (var y = Math.floor(yMin / sz); y < Math.ceil(yMax / sz); ++y) { - var xoff = (x * sz - xMin) / Math.pow(2, gMaxZoom - z); - var yoff = (y * sz - yMin) / Math.pow(2, gMaxZoom - z); + for (var x = Math.floor(xMin / size); x < Math.ceil(xMax / size); x++) { + for (var y = Math.floor(yMin / size); y < Math.ceil(yMax / size); y++) { + var xoff = (x * size - xMin) / Math.pow(2, gMaxZoom - z); + var yoff = (y * size - yMin) / Math.pow(2, gMaxZoom - z); var tileKey = encodeIndex(x, y, z); if (gTiles[tileKey] && gTiles[tileKey].complete) { // Round here is **CRUICIAL** otherwise the images are filtered and the performance sucks (more than expected). diff --git a/js/ui.js b/js/ui.js index 74ea521..f82dddb 100644 --- a/js/ui.js +++ b/js/ui.js @@ -35,4 +35,29 @@ * * ***** END LICENSE BLOCK ***** */ +window.onload = function() { + var mSel = document.getElementById("mapSelector"); + for (var mapStyle in gMapStyles) { + var opt = document.createElement("option"); + opt.value = mapStyle; + opt.text = gMapStyles[mapStyle].name; + mSel.add(opt, null); + } + initMap(); + resizeAndDraw(); +} + +window.onresize = function() { + resizeAndDraw(); +} + +function toggleSettings() { + var fs = document.getElementById("settings"); + if (fs.style.display != "block") { + fs.style.display = "block"; + } + else { + fs.style.display = "none"; + } +} diff --git a/style/lantea.css b/style/lantea.css index 47af3ca..d39eed6 100644 --- a/style/lantea.css +++ b/style/lantea.css @@ -37,6 +37,40 @@ body { font-family: sans-serif; + margin: 0; +} + +h1 { + display: none; +} + +#overlayArea { + position: absolute; + /* width: 30em; */ + left: 1%; + top: 1em; + z-index: 5; +} + +#settings { + display: none; + background-color: rgba(255, 255, 255, .8); + border: 0; + border-radius: 5px; +} + +#settings > legend { + display: none; + background-color: rgba(255, 255, 255, .8); + border-radius: 3px; +} + +#map { + border: 0; + top: 1em; + left: 1%; + right: 1%; + z-index: 1; } #copyright { -- 2.35.3