0030507: Visualization - introduce AIS_ViewController

ViewerTest_EventManager now inherits AIS_ViewController.
Platform-dependent user input handling within ViewerTest has been revised
to process events in common way through AIS_ViewController.
The mouse navigation has been changed, so that left mouse clicked
without modifers now rotates View.
The rubber-band selection can be activated via Alt+LeftMouseButton.
Selection is now done on mouse unclick and keyboard short-cuts take effect on unclick.

Aspect_Window::SetTitle() - added new method configuring Window title.
Introduced new types Aspect_Touch, Aspect_VKey, Aspect_ScrollDelta
for processing window events in platform-independent way.

src/Xw/Xw_Window.cxx

@@ -22,6 +22,8 @@
 #include <Message.hxx>
 #include <Message_Messenger.hxx>
 
+//#include <X11/XF86keysym.h>
+
 #if defined(HAVE_EGL) || defined(HAVE_GLES2)
   #include <EGL/egl.h>
   #ifndef EGL_OPENGL_ES3_BIT
@@ -500,6 +502,18 @@ void Xw_Window::Size (Standard_Integer& theWidth,
   theHeight = aWinAttr.height;
 }
 
+// =======================================================================
+// function : SetTitle
+// purpose  :
+// =======================================================================
+void Xw_Window::SetTitle (const TCollection_AsciiString& theTitle)
+{
+  if (myXWindow != 0)
+  {
+    XStoreName (myDisplay->GetDisplay(), myXWindow, theTitle.ToCString());
+  }
+}
+
 // =======================================================================
 // function : InvalidateContent
 // purpose  :
@@ -522,4 +536,155 @@ void Xw_Window::InvalidateContent (const Handle(Aspect_DisplayConnection)& theDi
   XFlush (aDispX);
 }
 
+// =======================================================================
+// function : VirtualKeyFromNative
+// purpose  :
+// =======================================================================
+Aspect_VKey Xw_Window::VirtualKeyFromNative (unsigned long theKey)
+{
+  if (theKey >= XK_0
+   && theKey <= XK_9)
+  {
+    return Aspect_VKey(theKey - XK_0 + Aspect_VKey_0);
+  }
+
+  if (theKey >= XK_A
+   && theKey <= XK_Z)
+  {
+    return Aspect_VKey(theKey - XK_A + Aspect_VKey_A);
+  }
+
+  if (theKey >= XK_a
+   && theKey <= XK_z)
+  {
+    return Aspect_VKey(theKey - XK_a + Aspect_VKey_A);
+  }
+
+  if (theKey >= XK_F1
+   && theKey <= XK_F24)
+  {
+    if (theKey <= XK_F12)
+    {
+      return Aspect_VKey(theKey - XK_F1 + Aspect_VKey_F1);
+    }
+    return Aspect_VKey_UNKNOWN;
+  }
+
+  switch (theKey)
+  {
+    case XK_space:
+      return Aspect_VKey_Space;
+    case XK_apostrophe:
+      return Aspect_VKey_Apostrophe;
+    case XK_comma:
+      return Aspect_VKey_Comma;
+    case XK_minus:
+      return Aspect_VKey_Minus;
+    case XK_period:
+      return Aspect_VKey_Period;
+    case XK_semicolon:
+      return Aspect_VKey_Semicolon;
+    case XK_equal:
+      return Aspect_VKey_Equal;
+    case XK_bracketleft:
+      return Aspect_VKey_BracketLeft;
+    case XK_backslash:
+      return Aspect_VKey_Backslash;
+    case XK_bracketright:
+      return Aspect_VKey_BracketRight;
+    case XK_BackSpace:
+      return Aspect_VKey_Backspace;
+    case XK_Tab:
+      return Aspect_VKey_Tab;
+    //case XK_Linefeed:
+    case XK_Return:
+    case XK_KP_Enter:
+      return Aspect_VKey_Enter;
+    //case XK_Pause:
+    //  return Aspect_VKey_Pause;
+    case XK_Escape:
+      return Aspect_VKey_Escape;
+    case XK_Home:
+      return Aspect_VKey_Home;
+    case XK_Left:
+      return Aspect_VKey_Left;
+    case XK_Up:
+      return Aspect_VKey_Up;
+    case XK_Right:
+      return Aspect_VKey_Right;
+    case XK_Down:
+      return Aspect_VKey_Down;
+    case XK_Prior:
+      return Aspect_VKey_PageUp;
+    case XK_Next:
+      return Aspect_VKey_PageDown;
+    case XK_End:
+      return Aspect_VKey_End;
+    //case XK_Insert:
+    //  return Aspect_VKey_Insert;
+    case XK_Menu:
+      return Aspect_VKey_Menu;
+    case XK_Num_Lock:
+      return Aspect_VKey_Numlock;
+    //case XK_KP_Delete:
+    //  return Aspect_VKey_NumDelete;
+    case XK_KP_Multiply:
+      return Aspect_VKey_NumpadMultiply;
+    case XK_KP_Add:
+      return Aspect_VKey_NumpadAdd;
+    //case XK_KP_Separator:
+    //  return Aspect_VKey_Separator;
+    case XK_KP_Subtract:
+      return Aspect_VKey_NumpadSubtract;
+    //case XK_KP_Decimal:
+    //  return Aspect_VKey_Decimal;
+    case XK_KP_Divide:
+      return Aspect_VKey_NumpadDivide;
+    case XK_Shift_L:
+    case XK_Shift_R:
+      return Aspect_VKey_Shift;
+    case XK_Control_L:
+    case XK_Control_R:
+      return Aspect_VKey_Control;
+    //case XK_Caps_Lock:
+    //  return Aspect_VKey_CapsLock;
+    case XK_Alt_L:
+    case XK_Alt_R:
+      return Aspect_VKey_Alt;
+    //case XK_Super_L:
+    //case XK_Super_R:
+    //  return Aspect_VKey_Super;
+    case XK_Delete:
+      return Aspect_VKey_Delete;
+
+    case 0x1008FF11: // XF86AudioLowerVolume
+      return Aspect_VKey_VolumeDown;
+    case 0x1008FF12: // XF86AudioMute
+      return Aspect_VKey_VolumeMute;
+    case 0x1008FF13: // XF86AudioRaiseVolume
+      return Aspect_VKey_VolumeUp;
+
+    case 0x1008FF14: // XF86AudioPlay
+      return Aspect_VKey_MediaPlayPause;
+    case 0x1008FF15: // XF86AudioStop
+      return Aspect_VKey_MediaStop;
+    case 0x1008FF16: // XF86AudioPrev
+      return Aspect_VKey_MediaPreviousTrack;
+    case 0x1008FF17: // XF86AudioNext
+      return Aspect_VKey_MediaNextTrack;
+
+    case 0x1008FF18: // XF86HomePage
+      return Aspect_VKey_BrowserHome;
+    case 0x1008FF26: // XF86Back
+      return Aspect_VKey_BrowserBack;
+    case 0x1008FF27: // XF86Forward
+      return Aspect_VKey_BrowserForward;
+    case 0x1008FF28: // XF86Stop
+      return Aspect_VKey_BrowserStop;
+    case 0x1008FF29: // XF86Refresh
+      return Aspect_VKey_BrowserRefresh;
+  }
+  return Aspect_VKey_UNKNOWN;
+}
+
 #endif //  Win32 or Mac OS X

src/Xw/Xw_Window.hxx

@@ -20,6 +20,7 @@
 
 #include <Aspect_Window.hxx>
 
+#include <Aspect_VKey.hxx>
 #include <Aspect_DisplayConnection.hxx>
 #include <Aspect_FillMethod.hxx>
 #include <Aspect_GradientFillMethod.hxx>
@@ -38,6 +39,10 @@ class Aspect_GradientBackground;
 //! This class defines XLib window intended for creation of OpenGL context.
 class Xw_Window : public Aspect_Window
 {
+public:
+
+  //! Convert X11 virtual key (KeySym) into Aspect_VKey.
+  Standard_EXPORT static Aspect_VKey VirtualKeyFromNative (unsigned long theKey);
 
 public:
 
@@ -111,6 +116,9 @@ public:
     return myFBConfig;
   }
 
+  //! Sets window title.
+  Standard_EXPORT virtual void SetTitle (const TCollection_AsciiString& theTitle) Standard_OVERRIDE;
+
   //! Invalidate entire window content through generation of Expose event.
   //! This method does not aggregate multiple calls into single event - dedicated event will be sent on each call.
   //! When NULL display connection is specified, the connection specified on window creation will be used.