re-indent drawLine(), only care about mouse-up if zoomstart is set, do some var-...

[mandelbrot.git] / xulapp / chrome / mandelbrot / content / mandelbrot.js

diff --git a/xulapp/chrome/mandelbrot/content/mandelbrot.js b/xulapp/chrome/mandelbrot/content/mandelbrot.js
index 1ead31e1b2cb4e0423355e5690929c69dfcf864d..f698d4574a928eba66cd62d2baabffdc4fbe4a55 100644 (file)
--- a/xulapp/chrome/mandelbrot/content/mandelbrot.js
+++ b/xulapp/chrome/mandelbrot/content/mandelbrot.js
@@ -120,27 +120,27 @@ function drawImage() {
 }
 
 function drawLine(line, dimensions, canvas, context, iterMax, algorithm) {
-    let Cr_min = dimensions[0];
-    let Cr_max = dimensions[1];
-    let Cr_scale = Cr_max - Cr_min;
-
-    let Ci_min = dimensions[2];
-    let Ci_max = dimensions[3];
-    let Ci_scale = Ci_max - Ci_min;
-
-    let pixels = [];
-    for (var img_y = line; img_y < canvas.height && img_y < line+8; img_y++)
-      for (let img_x = 0; img_x < canvas.width; img_x++) {
-        let C = new complex(Cr_min + (img_x / canvas.width) * Cr_scale,
-                            Ci_min + (img_y / canvas.height) * Ci_scale);
-        pixels.push.apply(pixels, drawPoint(context, img_x, img_y, C, iterMax, algorithm));
-      }
-    context.putImageData({width: canvas.width, height: pixels.length/4/canvas.width, data: pixels}, 0, line);
+  let Cr_min = dimensions[0];
+  let Cr_max = dimensions[1];
+  let Cr_scale = Cr_max - Cr_min;
+
+  let Ci_min = dimensions[2];
+  let Ci_max = dimensions[3];
+  let Ci_scale = Ci_max - Ci_min;
+
+  let pixels = [];
+  for (var img_y = line; img_y < canvas.height && img_y < line+8; img_y++)
+    for (let img_x = 0; img_x < canvas.width; img_x++) {
+      let C = new complex(Cr_min + (img_x / canvas.width) * Cr_scale,
+                          Ci_min + (img_y / canvas.height) * Ci_scale);
+      pixels.push.apply(pixels, drawPoint(context, img_x, img_y, C, iterMax, algorithm));
+    }
+  context.putImageData({width: canvas.width, height: pixels.length/4/canvas.width, data: pixels}, 0, line);
 
-    if (img_y < canvas.height)
-      setTimeout(drawLine, 0, img_y, dimensions, canvas, context, iterMax, algorithm);
-    else if (gStartTime)
-      EndCalc();
+  if (img_y < canvas.height)
+    setTimeout(drawLine, 0, img_y, dimensions, canvas, context, iterMax, algorithm);
+  else if (gStartTime)
+    EndCalc();
 }
 
 function EndCalc() {
@@ -353,10 +353,10 @@ function mouseevent(etype, event) {
                      y: event.clientY - canvas.offsetTop};
       break;
     case 'up':
-      if (event.button == 0) {
-        var prompts = Components.classes["@mozilla.org/embedcomp/prompt-service;1"]
+      if (event.button == 0 && zoomstart) {
+        let prompts = Components.classes["@mozilla.org/embedcomp/prompt-service;1"]
                                 .getService(Components.interfaces.nsIPromptService);
-        var ok = prompts.confirm(null, gMbrotBundle.getString("zoomConfirmTitle"),
+        let ok = prompts.confirm(null, gMbrotBundle.getString("zoomConfirmTitle"),
             gMbrotBundle.getString("zoomConfirmLabel") + ' --- ' +
             zoomstart.x + ',' + zoomstart.y + '-' +
             (event.clientX - canvas.offsetLeft) + ',' +
@@ -370,18 +370,18 @@ function mouseevent(etype, event) {
 
 function saveImage() {
   const nsIFilePicker = Components.interfaces.nsIFilePicker;
-  var fp = null;
+  let fp = null;
   try {
     fp = Components.classes["@mozilla.org/filepicker;1"]
                    .createInstance(nsIFilePicker);
   } catch (e) {}
   if (!fp) return;
-  var promptString = gMbrotBundle.getString("savePrompt");
+  let promptString = gMbrotBundle.getString("savePrompt");
   fp.init(window, promptString, nsIFilePicker.modeSave);
   fp.appendFilter(gMbrotBundle.getString("pngFilterName"), "*.png");
   fp.defaultString = "mandelbrot.png";
 
-  var fpResult = fp.show();
+  let fpResult = fp.show();
   if (fpResult != nsIFilePicker.returnCancel) {
     saveCanvas(document.getElementById("mbrotImage"), fp.file);
   }
@@ -395,17 +395,17 @@ function updateBookmarkMenu(aParent) {
          aParent.lastChild.id != 'bookmarkSeparator')
     aParent.removeChild(aParent.lastChild);
 
-  var file = Components.classes["@mozilla.org/file/directory_service;1"]
+  let file = Components.classes["@mozilla.org/file/directory_service;1"]
                        .getService(Components.interfaces.nsIProperties)
                        .get("ProfD", Components.interfaces.nsIFile);
   file.append("mandelbookmarks.sqlite");
   if (file.exists()) {
-    var connection = Components.classes["@mozilla.org/storage/service;1"]
+    let connection = Components.classes["@mozilla.org/storage/service;1"]
                                .getService(Components.interfaces.mozIStorageService)
                                .openDatabase(file);
     try {
       if (connection.tableExists("bookmarks")) {
-        var statement = connection.createStatement(
+        let statement = connection.createStatement(
             "SELECT name FROM bookmarks ORDER BY ROWID DESC");
         while (statement.executeStep())
           aParent.appendChild(document.createElement("menuitem"))
@@ -419,7 +419,7 @@ function updateBookmarkMenu(aParent) {
     }
   }
   // Create the "Nothing Available" Menu item and disable it.
-  var na = aParent.appendChild(document.createElement("menuitem"));
+  let na = aParent.appendChild(document.createElement("menuitem"));
   na.setAttribute("label", gMbrotBundle.getString("noBookmarks"));
   na.setAttribute("disabled", "true");
 }
@@ -429,22 +429,22 @@ function callBookmark(evtarget) {
 
 function saveBookmark() {
   // retrieve wanted bookmark name with a prompt
-  var prompts = Components.classes["@mozilla.org/embedcomp/prompt-service;1"]
+  let prompts = Components.classes["@mozilla.org/embedcomp/prompt-service;1"]
                           .getService(Components.interfaces.nsIPromptService);
-  var input = {value: ""}; // empty default value
-  var ok = prompts.prompt(null, gMbrotBundle.getString("saveBookmarkTitle"), gMbrotBundle.getString("saveBookmarkLabel"), input, null, {});
+  let input = {value: ""}; // empty default value
+  let ok = prompts.prompt(null, gMbrotBundle.getString("saveBookmarkTitle"), gMbrotBundle.getString("saveBookmarkLabel"), input, null, {});
   // ok is true if OK is pressed, false if Cancel. input.value holds the value of the edit field if "OK" was pressed.
   if (!ok || !input.value)
     return
 
-  var bmName = input.value;
+  let bmName = input.value;
 
   // Open or create the bookmarks database.
-  var file = Components.classes["@mozilla.org/file/directory_service;1"]
+  let file = Components.classes["@mozilla.org/file/directory_service;1"]
                        .getService(Components.interfaces.nsIProperties)
                        .get("ProfD", Components.interfaces.nsIFile);
   file.append("mandelbookmarks.sqlite");
-  var connection = Components.classes["@mozilla.org/storage/service;1"]
+  let connection = Components.classes["@mozilla.org/storage/service;1"]
                              .getService(Components.interfaces.mozIStorageService)
                              .openDatabase(file);
   connection.beginTransaction();
@@ -456,7 +456,7 @@ function saveBookmark() {
   // TEXT. The value is a text string, stored using the database encoding (UTF-8, UTF-16BE or UTF-16-LE).
 
   // Put value of the current image into the bookmarks table
-  var statement = connection.createStatement(
+  let statement = connection.createStatement(
       "INSERT INTO bookmarks (name,iteration_max,Cr_min,Cr_max,Ci_min,Ci_max) VALUES (?1,?2,?3,?4,?5,?6)");
   statement.bindStringParameter(0, bmName);
   statement.bindStringParameter(1, gPref.getIntPref("mandelbrot.iteration_max"));
@@ -471,19 +471,18 @@ function saveBookmark() {
 }
 
 function updateIterMenu() {
+  let currentIter = 0;
   try {
-    var currentIter = gPref.getIntPref("mandelbrot.iteration_max");
-  }
-  catch(e) {
-    var currentIter = 0;
+    currentIter = gPref.getIntPref("mandelbrot.iteration_max");
   }
+  catch(e) { }
   if (currentIter < 10) {
     currentIter = 500;
     setIter(currentIter);
   }
 
-  var popup = document.getElementById("menu_iterPopup");
-  var item = popup.firstChild;
+  let popup = document.getElementById("menu_iterPopup");
+  let item = popup.firstChild;
   while (item) {
     if (item.getAttribute("name") == "iter") {
       if (item.getAttribute("value") == currentIter)
@@ -500,12 +499,11 @@ function setIter(aIter) {
 }
 
 function updatePaletteMenu() {
+  let currentPalette = '';
   try {
-    var currentPalette = gPref.getCharPref("mandelbrot.color_palette");
-  }
-  catch(e) {
-    var currentPalette = '';
+    currentPalette = gPref.getCharPref("mandelbrot.color_palette");
   }
+  catch(e) { }
   if (!currentPalette.length) {
     currentPalette = 'kairo';
     setPalette(currentPalette);
@@ -513,8 +511,8 @@ function updatePaletteMenu() {
   if (!gColorPalette || !gColorPalette.length)
     gColorPalette = getColorPalette(currentPalette);
 
-  var popup = document.getElementById("menu_palettePopup");
-  var item = popup.firstChild;
+  let popup = document.getElementById("menu_palettePopup");
+  let item = popup.firstChild;
   while (item) {
     if (item.getAttribute("name") == "palette") {
       if (item.getAttribute("value") == currentPalette)
@@ -547,19 +545,18 @@ function toggleJITState(jitMenuItem) {
 }
 
 function updateAlgoMenu() {
+  let currentAlgo = '';
   try {
-    var currentAlgo = gPref.getCharPref("mandelbrot.use_algorithm");
-  }
-  catch(e) {
-    var currentAlgo = '';
+    currentAlgo = gPref.getCharPref("mandelbrot.use_algorithm");
   }
+  catch(e) { }
   if (!currentAlgo.length) {
     currentAlgo = 'numeric';
     setAlgorithm(currentAlgo);
   }
 
-  var popup = document.getElementById("menu_algoPopup");
-  var item = popup.firstChild;
+  let popup = document.getElementById("menu_algoPopup");
+  let item = popup.firstChild;
   while (item) {
     if (item.getAttribute("name") == "algorithm") {
       if (item.getAttribute("value") == currentAlgo)
@@ -576,7 +573,7 @@ function setAlgorithm(algoID) {
 }
 
 function addonsManager(aPane) {
-  var theEM = Components.classes["@mozilla.org/appshell/window-mediator;1"]
+  let theEM = Components.classes["@mozilla.org/appshell/window-mediator;1"]
                         .getService(Components.interfaces.nsIWindowMediator)
                         .getMostRecentWindow("Extension:Manager");
   if (theEM) {