Fix #33877: Pressure Sensitivity stop after opening User Preferences Window

Issue was caused by opening the same device id twice and closing one of
descriptors on closing window. This used to close device used by other
windows.

Now moved all device-specific code to SystemX11, so opening and closing
happens only once.

1 files changed, 35 insertions, 0 deletions

diff --git a/intern/ghost/intern/GHOST_SystemX11.h b/intern/ghost/intern/GHOST_SystemX11.h
index 02c0109085a..e49d6280b9c 100644
--- a/intern/ghost/intern/GHOST_SystemX11.h
+++ b/intern/ghost/intern/GHOST_SystemX11.h
@@ -39,6 +39,11 @@
 #include "GHOST_System.h"
 #include "../GHOST_Types.h"
 
+// For tablets
+#ifdef WITH_X11_XINPUT
+#  include <X11/extensions/XInput.h>
+#endif
+
 #if defined(WITH_X11_XINPUT) && defined(X_HAVE_UTF8_STRING)
 #  define GHOST_X11_RES_NAME  "Blender" /* res_name */
 #  define GHOST_X11_RES_CLASS "Blender" /* res_class */
@@ -284,6 +289,27 @@ public:
 	Atom m_incr;
 	Atom m_utf8_string;
 
+#ifdef WITH_X11_XINPUT
+	typedef struct GHOST_TabletX11 {
+		XDevice *StylusDevice;
+		XDevice *EraserDevice;
+
+		XID StylusID, EraserID;
+
+		int MotionEvent;
+		int ProxInEvent;
+		int ProxOutEvent;
+
+		int PressureLevels;
+		int XtiltLevels, YtiltLevels;
+	} GHOST_TabletX11;
+
+	GHOST_TabletX11 &GetXTablet()
+	{
+		return m_xtablet;
+	}
+#endif // WITH_X11_XINPUT
+
 private:
 
 	Display *m_display;
@@ -291,6 +317,11 @@ private:
 	XIM m_xim;
 #endif
 
+#ifdef WITH_X11_XINPUT
+	/* Tablet devices */
+	GHOST_TabletX11 m_xtablet;
+#endif
+
 	/// The vector of windows that need to be updated.
 	std::vector<GHOST_WindowX11 *> m_dirty_windows;
 
@@ -313,6 +344,10 @@ private:
 	bool openX11_IM();
 #endif
 
+#ifdef WITH_X11_XINPUT
+	void initXInputDevices();
+#endif
+
 	GHOST_WindowX11 *
 	findGhostWindow(
 	    Window xwind