enhanced links in HelpDialog

fixed link color for Dark theme

src/emucore/FrameBuffer.cxx

@@ -1494,7 +1494,7 @@ UIPaletteArray FrameBuffer::ourLightUIPalette = {
 
 UIPaletteArray FrameBuffer::ourDarkUIPalette = {
   { 0x646464, 0xc0c0c0, 0x3c3c3c, 0x282828, 0x989898,           // base
-    0xc0c0c0, 0x1567a5, 0x0059a3, 0xc0c0c0, 0x1567a5,           // text
+    0xc0c0c0, 0x1567a5, 0x0064b7, 0xc0c0c0, 0x1d92e0,           // text
     0x202020, 0x000000, 0x0059a3, 0xb0b0b0,                     // UI elements
     0x282828, 0x00467f, 0x646464, 0x0059a3, 0xc0c0c0, 0xc0c0c0, // buttons
     0x989898,                                                   // checkbox

src/gui/HelpDialog.cxx

@@ -20,6 +20,7 @@
 #include "Dialog.hxx"
 #include "Widget.hxx"
 #include "Font.hxx"
+#include "MediaFactory.hxx"
 
 #include "HelpDialog.hxx"
 
@@ -79,12 +80,11 @@ HelpDialog::HelpDialog(OSystem& osystem, DialogContainer& parent,
     myDesc[i] =
       new StaticTextWidget(this, font, xpos+lwidth, ypos, _w - xpos - lwidth - HBORDER,
                            fontHeight);
+    myDesc[i]->setID(i);
     ypos += fontHeight;
   }
 
   addToFocusList(wid);
-
-  setHelpAnchor("Hotkeys");
 }
 
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
@@ -105,6 +105,7 @@ void HelpDialog::updateStrings(uInt8 page, uInt8 lines, string& title)
   auto ADD_TEXT = [&](const string& d) { ADD_BIND("", d); };
   auto ADD_LINE = [&]() { ADD_BIND("", ""); };
 
+  setHelpAnchor("Hotkeys");
   switch(page)
   {
     case 1:
@@ -170,6 +171,7 @@ void HelpDialog::updateStrings(uInt8 page, uInt8 lines, string& title)
       ADD_TEXT("remapped. Please consult the");
       ADD_TEXT("'Options/Input" + ELLIPSIS + "' dialog for");
       ADD_TEXT("more information.");
+      setHelpAnchor("Remapping");
       break;
 
     default:
@@ -191,6 +193,13 @@ void HelpDialog::displayInfo()
   {
     myKey[i]->setLabel(myKeyStr[i]);
     myDesc[i]->setLabel(myDescStr[i]);
+
+    if(BSPF::containsIgnoreCase(myDescStr[i], "Options/Input" + ELLIPSIS))
+      myDesc[i]->setUrl("https://stella-emu.github.io/docs/index.html#Remapping",
+                        "Options/Input" + ELLIPSIS);
+    else
+      // extract URL from label
+      myDesc[i]->setUrl();
   }
 }
 
@@ -220,6 +229,15 @@ void HelpDialog::handleCommand(CommandSender* sender, int cmd,
       displayInfo();
       break;
 
+    case StaticTextWidget::kOpenUrlCmd:
+    {
+      const string url = myDesc[id]->getUrl();
+
+      if(url != EmptyString)
+        MediaFactory::openURL(url);
+      break;
+    }
+
     default:
       Dialog::handleCommand(sender, cmd, data, 0);
   }