X-Git-Url: https://git-public.kairo.at/?p=mandelbrot-web.git;a=blobdiff_plain;f=js%2Fmandelbrot.js;h=fad30134a9eeb917a109c8af5839dc63440f8238;hp=7f6c38ed6c36a89534af2b1421718cc39fa4a793;hb=5d56a513a8ece482f7223dfb8946d8c464f48170;hpb=d0244cd366597d6e75c6f81b28d56b7207342337

diff --git a/js/mandelbrot.js b/js/mandelbrot.js
index 7f6c38e..fad3013 100644
--- a/js/mandelbrot.js
+++ b/js/mandelbrot.js
@@ -2,21 +2,62 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
  * You can obtain one at http://mozilla.org/MPL/2.0/. */
 
+// Get the best-available indexedDB object.
+var iDB = window.indexedDB || window.webkitIndexedDB || window.mozIndexedDB || window.msIndexedDB;
+var mainDB;
+
+var gMainCanvas, gMainContext;
 var gColorPalette = [];
 var gStartTime = 0;
 var gCurrentImageData;
 var gLastImageData;
 
 function Startup() {
-  var img = document.getElementById("mbrotImage");
-  img.addEventListener("mouseup", imgEvHandler, false);
-  img.addEventListener("mousedown", imgEvHandler, false);
-  img.addEventListener("mousemove", imgEvHandler, false);
-  img.addEventListener("touchstart", imgEvHandler, false);
-  img.addEventListener("touchend", imgEvHandler, false);
-  img.addEventListener("touchcancel", imgEvHandler, false);
-  img.addEventListener("touchleave", imgEvHandler, false);
-  img.addEventListener("touchmove", imgEvHandler, false);
+  initDB();
+
+  gMainCanvas = document.getElementById("mbrotImage");
+  gMainContext = gMainCanvas.getContext("2d");
+
+  gMainCanvas.addEventListener("mouseup", imgEvHandler, false);
+  gMainCanvas.addEventListener("mousedown", imgEvHandler, false);
+  gMainCanvas.addEventListener("mousemove", imgEvHandler, false);
+  gMainCanvas.addEventListener("touchstart", imgEvHandler, false);
+  gMainCanvas.addEventListener("touchend", imgEvHandler, false);
+  gMainCanvas.addEventListener("touchcancel", imgEvHandler, false);
+  gMainCanvas.addEventListener("touchleave", imgEvHandler, false);
+  gMainCanvas.addEventListener("touchmove", imgEvHandler, false);
+
+  var initTile = new Image();
+  initTile.src = "style/initial-overview.png";
+  gMainContext.drawImage(initTile, 0, 0);
+}
+
+function initDB() {
+  // Open DB.
+  var request = iDB.open("MainDB", 1);
+  request.onerror = function(event) {
+    // Errors can be handled here. Error codes explain in:
+    // https://developer.mozilla.org/en/IndexedDB/IDBDatabaseException#Constants
+    //document.getElementById("debug").textContent =
+    //  "error opening mainDB: " + event.target.errorCode;
+  };
+  request.onsuccess = function(event) {
+    //document.getElementById("debug").textContent = "mainDB opened.";
+    mainDB = request.result;
+  };
+  request.onupgradeneeded = function(event) {
+    mainDB = request.result;
+    //document.getElementById("debug").textContent = "mainDB upgraded.";
+    // Create a "prefs" objectStore.
+    var prefsStore = mainDB.createObjectStore("prefs");
+    // Create a "bookmarks" objectStore.
+    var bmStore = mainDB.createObjectStore("bookmarks");
+    mainDB.onversionchange = function(event) {
+      mainDB.close();
+      mainDB = undefined;
+      initDB();
+    };
+  };
 }
 
 function getAdjustVal(aName) {
@@ -31,6 +72,7 @@ function getAdjustVal(aName) {
       catch (e) { }
       if ((value < 10) || (value > 5000)) {
         value = 300;
+        gPrefs.set(prefname, value);
         //document.getElementById(aName.replace(".", "_")).value = value;
       }
       return value;
@@ -46,6 +88,8 @@ function getAdjustVal(aName) {
           (Cr_max < -3) || (Cr_max > 2) || (Cr_min >= Cr_max)) {
         Cr_min = -2.0; Cr_max = 1.0;
       }
+      gPrefs.set("Cr_min", Cr_min);
+      gPrefs.set("Cr_max", Cr_max);
       document.getElementById("Cr_min").value = Cr_min;
       document.getElementById("Cr_max").value = Cr_max;
       return {Cr_min: Cr_min, Cr_max: Cr_max};
@@ -61,6 +105,8 @@ function getAdjustVal(aName) {
           (Ci_max < -2.5) || (Ci_max > 2.5) || (Ci_min >= Ci_max)) {
         Ci_min = -1.5; Ci_max = 1.5;
       }
+      gPrefs.set("Ci_min", Ci_min);
+      gPrefs.set("Ci_max", Ci_max);
       document.getElementById("Ci_min").value = Ci_min;
       document.getElementById("Ci_max").value = Ci_max;
       return {Ci_min: Ci_min, Ci_max: Ci_max};
@@ -101,6 +147,7 @@ function getAdjustVal(aName) {
         value = document.getElementById("proportional").value;
       }
       catch(e) {
+        gPrefs.set(prefname, value);
         document.getElementById("proportional").value = value;
       }
       return value;
@@ -113,13 +160,18 @@ function setVal(aName, aValue) {
   switch (aName) {
     case "image.width":
     case "image.height":
+      gPrefs.set(aName, value);
       document.getElementById(aName.replace(".", "_")).value = value;
       break;
     case "last_image.Cr_*":
+      gPrefs.set("Cr_min", Cr_min);
+      gPrefs.set("Cr_max", Cr_max);
       document.getElementById("Cr_min").value = aValue.Cr_min;
       document.getElementById("Cr_max").value = aValue.Cr_max;
       break;
     case "last_image.Ci_*":
+      gPrefs.set("Ci_min", Ci_min);
+      gPrefs.set("Ci_max", Ci_max);
       document.getElementById("Ci_min").value = aValue.Ci_min;
       document.getElementById("Ci_max").value = aValue.Ci_max;
       break;
@@ -133,11 +185,62 @@ function setVal(aName, aValue) {
       setPalette(valueaValue);
       break;
    case "syncProportions":
+      gPrefs.set(aName, value);
       document.getElementById("proportional").value = aValue;
       break;
   }
 }
 
+function checkISValue(textbox, type) {
+  if (type == "coord") {
+    textbox.value = roundCoord(parseFloat(textbox.value));
+  }
+  else if (type == "dim") {
+    textbox.value = parseInt(textbox.value);
+  }
+}
+
+function recalcCoord(coord, target) {
+  var othercoord = (coord == "Ci") ? "Cr" : "Ci";
+  var owndim = (coord == "Ci") ? "height" : "width";
+  var otherdim = (coord == "Ci") ? "width" : "height";
+  var myscale;
+  if (target == "scale") {
+    myscale =
+      parseFloat(document.getElementById(coord + "_max").value) -
+      parseFloat(document.getElementById(coord + "_min").value);
+    document.getElementById(coord + "_scale").value = roundCoord(myscale);
+  }
+  else if (target == 'max') {
+    var mymax =
+      parseFloat(document.getElementById(coord + "_min").value) +
+      parseFloat(document.getElementById(coord + "_scale").value);
+    document.getElementById(coord + "_max").value = roundCoord(mymax);
+    myscale = document.getElementById(coord + "_scale").value;
+  }
+  if (document.getElementById("proportional").checked) {
+    var otherscale = myscale *
+      document.getElementById("image_" + otherdim).value /
+      document.getElementById("image_" + owndim).value;
+    document.getElementById(othercoord + "_scale").value = roundCoord(otherscale);
+    var othermax =
+      parseFloat(document.getElementById(othercoord + "_min").value) +
+      parseFloat(document.getElementById(othercoord + "_scale").value);
+    document.getElementById(othercoord + "_max").value = roundCoord(othermax);
+  }
+}
+
+function checkProportions() {
+  if (!document.getElementById("proportional").checked) {
+    recalcCoord("Cr", "scale");
+  }
+}
+
+function roundCoord(floatval) {
+  // We should round to 10 decimals here or so
+  return parseFloat(floatval.toFixed(10));
+}
+
 function adjustCoordsAndDraw(aC_min, aC_max) {
   var iWidth = getAdjustVal("image.width");
   var iHeight = getAdjustVal("image.height");
@@ -173,8 +276,8 @@ function adjustCoordsAndDraw(aC_min, aC_max) {
 }
 
 function drawImage() {
-  var canvas = document.getElementById("mbrotImage");
-  var context = canvas.getContext("2d");
+  var canvas = gMainCanvas;
+  var context = gMainContext;
 
   document.getElementById("calcTime").textContent = "--";
 
@@ -196,16 +299,8 @@ function drawImage() {
   var iterMax = getAdjustVal("iteration_max");
   var algorithm = getAdjustVal("use_algorithm");
 
-  var iWidth = canvas.width;
-  if ((iWidth < 10) || (iWidth > 5000)) {
-    iWidth = 300;
-    canvas.width = iWidth;
-  }
-  var iHeight = canvas.height;
-  if ((iHeight < 10) || (iHeight > 5000)) {
-    iHeight = 300;
-    canvas.height = iHeight;
-  }
+  var iWidth = getAdjustVal("image.width");
+  var iHeight = getAdjustVal("image.height");
 
   gCurrentImageData = {
     C_min: new complex(Cr_min, Ci_min),
@@ -215,6 +310,9 @@ function drawImage() {
     iterMax: iterMax
   };
 
+  canvas.width = iWidth;
+  canvas.height = iHeight;
+
   context.fillStyle = "rgba(255, 255, 255, 127)";
   context.fillRect(0, 0, canvas.width, canvas.height);
 
@@ -555,14 +653,170 @@ function goBack() {
 }
 
 function setIter(aIter) {
+  gPrefs.set("iteration_max", aIter);
   document.getElementById("iterMax").value = aIter;
 }
 
 function setPalette(aPaletteID) {
+  gPrefs.set("color_palette", aPaletteID);
   document.getElementById("palette").value = aPaletteID;
   gColorPalette = getColorPalette(aPaletteID);
 }
 
 function setAlgorithm(algoID) {
+  gPrefs.set("use_algorithm", algoID);
   //document.getElementById("algorithm").value = algoID;
 }
+
+var gPrefs = {
+  objStore: "prefs",
+
+  get: function(aKey, aCallback) {
+    if (!mainDB)
+      return;
+    var transaction = mainDB.transaction([this.objStore]);
+    var request = transaction.objectStore(this.objStore).get(aKey);
+    request.onsuccess = function(event) {
+      aCallback(request.result, event);
+    };
+    request.onerror = function(event) {
+      // Errors can be handled here.
+      aCallback(undefined, event);
+    };
+  },
+
+  set: function(aKey, aValue, aCallback) {
+    if (!mainDB)
+      return;
+    var success = false;
+    var transaction = mainDB.transaction([this.objStore], "readwrite");
+    var objStore = transaction.objectStore(this.objStore);
+    var request = objStore.put(aValue, aKey);
+    request.onsuccess = function(event) {
+      success = true;
+      if (aCallback)
+        aCallback(success, event);
+    };
+    request.onerror = function(event) {
+      // Errors can be handled here.
+      if (aCallback)
+        aCallback(success, event);
+    };
+  },
+
+  unset: function(aKey, aCallback) {
+    if (!mainDB)
+      return;
+    var success = false;
+    var transaction = mainDB.transaction([this.objStore], "readwrite");
+    var request = transaction.objectStore(this.objStore).delete(aKey);
+    request.onsuccess = function(event) {
+      success = true;
+      if (aCallback)
+        aCallback(success, event);
+    };
+    request.onerror = function(event) {
+      // Errors can be handled here.
+      if (aCallback)
+        aCallback(success, event);
+    }
+  }
+};
+
+var gBMStore = {
+  objStore: "bookmarks",
+
+  getList: function(aCallback) {
+    if (!mainDB)
+      return;
+    var transaction = mainDB.transaction([this.objStore]);
+    var objStore = transaction.objectStore(this.objStore);
+    if (objStore.getAll) { // currently Mozilla-specific
+      objStore.getAll().onsuccess = function(event) {
+        aCallback(event.target.result);
+      };
+    }
+    else { // Use cursor (standard method).
+      var BMs = {};
+      objStore.openCursor().onsuccess = function(event) {
+        var cursor = event.target.result;
+        if (cursor) {
+          BMs[cursor.key] = cursor.value;
+          cursor.continue();
+        }
+        else {
+          aCallback(BMs);
+        }
+      };
+    }
+  },
+
+  get: function(aKey, aCallback) {
+    if (!mainDB)
+      return;
+    var transaction = mainDB.transaction([this.objStore]);
+    var request = transaction.objectStore(this.objStore).get(aKey);
+    request.onsuccess = function(event) {
+      aCallback(request.result, event);
+    };
+    request.onerror = function(event) {
+      // Errors can be handled here.
+      aCallback(undefined, event);
+    };
+  },
+
+  set: function(aKey, aValue, aCallback) {
+    if (!mainDB)
+      return;
+    var success = false;
+    var transaction = mainDB.transaction([this.objStore], "readwrite");
+    var objStore = transaction.objectStore(this.objStore);
+    var request = objStore.put(aValue, aKey);
+    request.onsuccess = function(event) {
+      success = true;
+      if (aCallback)
+        aCallback(success, event);
+    };
+    request.onerror = function(event) {
+      // Errors can be handled here.
+      if (aCallback)
+        aCallback(success, event);
+    };
+  },
+
+  unset: function(aKey, aCallback) {
+    if (!mainDB)
+      return;
+    var success = false;
+    var transaction = mainDB.transaction([this.objStore], "readwrite");
+    var request = transaction.objectStore(this.objStore).delete(aKey);
+    request.onsuccess = function(event) {
+      success = true;
+      if (aCallback)
+        aCallback(success, event);
+    };
+    request.onerror = function(event) {
+      // Errors can be handled here.
+      if (aCallback)
+        aCallback(success, event);
+    }
+  },
+
+  clear: function(aCallback) {
+    if (!mainDB)
+      return;
+    var success = false;
+    var transaction = mainDB.transaction([this.objStore], "readwrite");
+    var request = transaction.objectStore(this.objStore).clear();
+    request.onsuccess = function(event) {
+      success = true;
+      if (aCallback)
+        aCallback(success, event);
+    };
+    request.onerror = function(event) {
+      // Errors can be handled here.
+      if (aCallback)
+        aCallback(success, event);
+    }
+  }
+};