X-Git-Url: https://git-public.kairo.at/?p=mandelbrot.git;a=blobdiff_plain;f=xulapp%2Fchrome%2Fmandelbrot%2Fcontent%2Fimage-settings.js;h=a907f5a20bf677a820a4350f3c40b43f88d18a2d;hp=d9af9935a85f0c138dac817bce1d080206a462c4;hb=7727ce46183a6fb4adaaf0e5b63cd06a6034a2a8;hpb=eceff1c913ed3ce42776db2b5b1cf69e44f0b921

diff --git a/xulapp/chrome/mandelbrot/content/image-settings.js b/xulapp/chrome/mandelbrot/content/image-settings.js
index d9af993..a907f5a 100644
--- a/xulapp/chrome/mandelbrot/content/image-settings.js
+++ b/xulapp/chrome/mandelbrot/content/image-settings.js
@@ -38,6 +38,8 @@
 var gColorPalette = [];
 
 function initSettings() {
+  recalcCoord('Cr', 'scale');
+  recalcCoord('Ci', 'scale');
 }
 
 function drawPreview() {
@@ -78,3 +80,16 @@ function drawPreview() {
   drawLine(0, [Cr_min, Cr_max, Ci_min, Ci_max],
               canvas, context, iterMax, algorithm);
 }
+
+function recalcCoord(coord, target) {
+  if (target == 'scale') {
+    document.getElementById(coord + '_scale').value =
+      parseFloat(document.getElementById(coord + '_max').value) -
+      parseFloat(document.getElementById(coord + '_min').value);
+  }
+  else if (target == 'max') {
+    document.getElementById('mandelbrot.last_image.' + coord + '_max').value =
+      parseFloat(document.getElementById(coord + '_min').value) +
+      parseFloat(document.getElementById(coord + '_scale').value);
+  }
+}
\ No newline at end of file