X-Git-Url: https://git-public.kairo.at/?p=lantea.git;a=blobdiff_plain;f=js%2Fmap.js;h=5c93ae5741dbf71885253461fbe3e7b6e2a4cd32;hp=d269a9574aec018f21894c08aeb674341852a3e5;hb=cef88e12438c01ca96198c62b32e7d3e99617625;hpb=8389557a642218382b7294fde519389b72551388

diff --git a/js/map.js b/js/map.js
index d269a95..5c93ae5 100644
--- a/js/map.js
+++ b/js/map.js
@@ -61,7 +61,7 @@ var gLoadingTile;
 var gMapPrefsLoaded = false;
 
 var gDragging = false;
-var gDragTouchID;
+var gDragTouchID, gPinchStartWidth;
 
 var gGeoWatchID;
 var gTrack = [];
@@ -89,74 +89,105 @@ function initMap() {
     }
   }
 
-  var loopCnt = 0;
-  var getPersistentPrefs = function() {
-    if (mainDB) {
-      gWaitCounter++;
-      gPrefs.get("position", function(aValue) {
-        if (aValue) {
-          gPos = aValue;
-          gWaitCounter--;
-        }
-      });
-      gWaitCounter++;
-      gPrefs.get("center_map", function(aValue) {
-        if (aValue === undefined)
-          document.getElementById("centerCheckbox").checked = true;
-        else
-          document.getElementById("centerCheckbox").checked = aValue;
-        setCentering(document.getElementById("centerCheckbox"));
-        gWaitCounter--;
-      });
-      gWaitCounter++;
-      gPrefs.get("tracking_enabled", function(aValue) {
-        if (aValue === undefined)
-          document.getElementById("trackCheckbox").checked = true;
-        else
-          document.getElementById("trackCheckbox").checked = aValue;
-        gWaitCounter--;
-      });
-      gWaitCounter++;
-      gTrackStore.getList(function(aTPoints) {
-        if (gDebug)
-          console.log(aTPoints.length + " points loaded.");
-        if (aTPoints.length) {
-          gTrack = aTPoints;
+  console.log("map vars set, loading prefs...");
+  loadPrefs();
+}
+
+function loadPrefs(aEvent) {
+  if (aEvent && aEvent.type == "prefs-step") {
+    console.log("wait: " + gWaitCounter);
+    if (gWaitCounter == 0) {
+      gAction.removeEventListener(aEvent.type, loadPrefs, false);
+      gMapPrefsLoaded = true;
+      console.log("prefs loaded.");
+
+      gTrackCanvas.addEventListener("mouseup", mapEvHandler, false);
+      gTrackCanvas.addEventListener("mousemove", mapEvHandler, false);
+      gTrackCanvas.addEventListener("mousedown", mapEvHandler, false);
+      gTrackCanvas.addEventListener("mouseout", mapEvHandler, false);
+
+      gTrackCanvas.addEventListener("touchstart", mapEvHandler, false);
+      gTrackCanvas.addEventListener("touchmove", mapEvHandler, false);
+      gTrackCanvas.addEventListener("touchend", mapEvHandler, false);
+      gTrackCanvas.addEventListener("touchcancel", mapEvHandler, false);
+      gTrackCanvas.addEventListener("touchleave", mapEvHandler, false);
+
+      gTrackCanvas.addEventListener("wheel", mapEvHandler, false);
+
+      document.getElementById("body").addEventListener("keydown", mapEvHandler, false);
+
+      document.getElementById("copyright").innerHTML =
+          gMapStyles[gActiveMap].copyright;
+
+      gLoadingTile = new Image();
+      gLoadingTile.src = "style/loading.png";
+      gLoadingTile.onload = function() {
+        var throwEv = new CustomEvent("mapinit-done");
+        gAction.dispatchEvent(throwEv);
+      };
+    }
+  }
+  else {
+    if (aEvent)
+      gAction.removeEventListener(aEvent.type, loadPrefs, false);
+    gAction.addEventListener("prefs-step", loadPrefs, false);
+    gWaitCounter++;
+    gPrefs.get("position", function(aValue) {
+      if (aValue) {
+        gPos = aValue;
+      }
+      gWaitCounter--;
+      var throwEv = new CustomEvent("prefs-step");
+      gAction.dispatchEvent(throwEv);
+    });
+    gWaitCounter++;
+    gPrefs.get("center_map", function(aValue) {
+      if (aValue === undefined)
+        document.getElementById("centerCheckbox").checked = true;
+      else
+        document.getElementById("centerCheckbox").checked = aValue;
+      setCentering(document.getElementById("centerCheckbox"));
+      gWaitCounter--;
+      var throwEv = new CustomEvent("prefs-step");
+      gAction.dispatchEvent(throwEv);
+    });
+    gWaitCounter++;
+    gPrefs.get("tracking_enabled", function(aValue) {
+      if (aValue === undefined)
+        document.getElementById("trackCheckbox").checked = true;
+      else
+        document.getElementById("trackCheckbox").checked = aValue;
+      gWaitCounter--;
+      var throwEv = new CustomEvent("prefs-step");
+      gAction.dispatchEvent(throwEv);
+    });
+    gWaitCounter++;
+    var trackLoadStarted = false;
+    var redrawBase = 100;
+    gTrackStore.getListStepped(function(aTPoint) {
+      if (aTPoint) {
+        // Add in front and return new length.
+        var tracklen = gTrack.unshift(aTPoint);
+        // Redraw track periodically, larger distance the longer it gets.
+        // Initial paint will do initial track drawing.
+        if (tracklen % redrawBase == 0) {
+          drawTrack();
+          redrawBase = tracklen;
         }
+      }
+      else {
+        // Last point received.
+        drawTrack();
+      }
+      if (!trackLoadStarted) {
+        // We have the most recent point, if present, rest will load async.
+        trackLoadStarted = true;
         gWaitCounter--;
-      });
-    }
-    else
-      setTimeout(getPersistentPrefs, 100);
-    loopCnt++;
-    if (loopCnt > 50) {
-      console.log("Loading prefs failed.");
-    }
-  };
-  getPersistentPrefs();
-
-  gTrackCanvas.addEventListener("mouseup", mapEvHandler, false);
-  gTrackCanvas.addEventListener("mousemove", mapEvHandler, false);
-  gTrackCanvas.addEventListener("mousedown", mapEvHandler, false);
-  gTrackCanvas.addEventListener("mouseout", mapEvHandler, false);
-
-  gTrackCanvas.addEventListener("touchstart", mapEvHandler, false);
-  gTrackCanvas.addEventListener("touchmove", mapEvHandler, false);
-  gTrackCanvas.addEventListener("touchend", mapEvHandler, false);
-  gTrackCanvas.addEventListener("touchcancel", mapEvHandler, false);
-  gTrackCanvas.addEventListener("touchleave", mapEvHandler, false);
-
-  gTrackCanvas.addEventListener("wheel", mapEvHandler, false);
-
-  document.getElementById("body").addEventListener("keydown", mapEvHandler, false);
-
-  document.getElementById("copyright").innerHTML =
-      gMapStyles[gActiveMap].copyright;
-
-  gLoadingTile = new Image();
-  gLoadingTile.src = "style/loading.png";
-  gWaitCounter++;
-  gLoadingTile.onload = function() { gWaitCounter--; };
+        var throwEv = new CustomEvent("prefs-step");
+        gAction.dispatchEvent(throwEv);
+      }
+    });
+  }
 }
 
 function resizeAndDraw() {
@@ -339,6 +370,10 @@ function drawMap(aPixels, aOverdraw) {
       }
     }
   }
+  drawTrack();
+}
+
+function drawTrack() {
   gLastDrawnPoint = null;
   gCurPosMapCache = undefined;
   gTrackContext.clearRect(0, 0, gTrackCanvas.width, gTrackCanvas.height);
@@ -451,6 +486,14 @@ var mapEvHandler = {
       case "mousedown":
       case "touchstart":
         if (touchEvent) {
+          if (aEvent.targetTouches.length == 2) {
+            gPinchStartWidth = Math.sqrt(
+                Math.pow(aEvent.targetTouches.item(1).clientX -
+                         aEvent.targetTouches.item(0).clientX, 2) +
+                Math.pow(aEvent.targetTouches.item(1).clientY -
+                         aEvent.targetTouches.item(0).clientY, 2)
+            );
+          }
           gDragTouchID = aEvent.changedTouches.item(0).identifier;
           coordObj = aEvent.changedTouches.identifiedTouch(gDragTouchID);
         }
@@ -466,6 +509,47 @@ var mapEvHandler = {
         break;
       case "mousemove":
       case "touchmove":
+        if (touchEvent && aEvent.targetTouches.length == 2) {
+          curPinchStartWidth = Math.sqrt(
+              Math.pow(aEvent.targetTouches.item(1).clientX -
+                       aEvent.targetTouches.item(0).clientX, 2) +
+              Math.pow(aEvent.targetTouches.item(1).clientY -
+                       aEvent.targetTouches.item(0).clientY, 2)
+          );
+          if (!gPinchStartWidth)
+            gPinchStartWidth = curPinchStartWidth;
+
+          if (gPinchStartWidth / curPinchStartWidth > 1.7 ||
+              gPinchStartWidth / curPinchStartWidth < 0.6) {
+            var newZoomLevel = gPos.z + (gPinchStartWidth < curPinchStartWidth ? 1 : -1);
+            if ((newZoomLevel >= 0) && (newZoomLevel <= gMaxZoom)) {
+              // Calculate new center of the map - preserve middle of pinch.
+              // This means that pixel distance between old center and middle
+              // must equal pixel distance of new center and middle.
+              var x = (aEvent.targetTouches.item(1).clientX +
+                       aEvent.targetTouches.item(0).clientX) / 2 -
+                      gMapCanvas.offsetLeft;
+              var y = (aEvent.targetTouches.item(1).clientY +
+                       aEvent.targetTouches.item(0).clientY) / 2 -
+                      gMapCanvas.offsetTop;
+
+              // Zoom factor after this action.
+              var newZoomFactor = Math.pow(2, gMaxZoom - newZoomLevel);
+              gPos.x -= (x - gMapCanvas.width / 2) * (newZoomFactor - gZoomFactor);
+              gPos.y -= (y - gMapCanvas.height / 2) * (newZoomFactor - gZoomFactor);
+
+              if (gPinchStartWidth < curPinchStartWidth)
+                zoomIn();
+              else
+                zoomOut();
+
+              // Reset pinch start width and start another pinch gesture.
+              gPinchStartWidth = null;
+            }
+          }
+          // If we are in a pinch, do not drag.
+          break;
+        }
         var x = coordObj.clientX - gMapCanvas.offsetLeft;
         var y = coordObj.clientY - gMapCanvas.offsetTop;
         if (gDragging === true) {
@@ -494,6 +578,7 @@ var mapEvHandler = {
         break;
       case "mouseup":
       case "touchend":
+        gPinchStartWidth = null;
         gDragging = false;
         showUI();
         break;
@@ -740,7 +825,7 @@ function endTracking() {
 function clearTrack() {
   gTrack = [];
   gTrackStore.clear();
-  drawMap({left: 0, right: 0, top: 0, bottom: 0});
+  drawTrack();
 }
 
 var gTileService = {