[win] Add option to disable WinTab for certain windows (aseprite/asep…

…rite#3358)

os/win/window.cpp

@@ -181,6 +181,7 @@ WindowWin::WindowWin(const WindowSpec& spec)
   , m_lastPointerDownButton(Event::NoneButton)
   , m_pointerDownCount(0)
 #endif
+  , m_allowWintab(spec.useTabletOptions())
   , m_hpenctx(nullptr)
   , m_fullscreen(false)
   , m_titled(spec.titled())
@@ -2485,6 +2486,9 @@ void WindowWin::checkDarkModeChange()
 
 void WindowWin::openWintabCtx()
 {
+  if (!m_allowWintab)
+    return;
+
   auto sys = system();
   TabletOptions options = sys->tabletOptions();
   if (options.api == TabletAPI::Wintab ||

os/win/window.h

@@ -246,6 +246,7 @@ namespace os {
     // packets queue are shared between all windows, because it's
     // information from the device that doesn't depend on the active
     // window.
+    bool m_allowWintab;
     HCTX m_hpenctx;
     static PointerType m_pointerType;
     static float m_pressure;

os/window_spec.h

@@ -1,5 +1,5 @@
 // LAF OS Library
-// Copyright (C) 2019-2021  Igara Studio S.A.
+// Copyright (C) 2019-2024  Igara Studio S.A.
 //
 // This file is released under the terms of the MIT license.
 // Read LICENSE.txt for more information.
@@ -58,6 +58,13 @@ namespace os {
     void transparent(const bool s) { m_transparent = s; }
     void parent(Window* p) { m_parent = p; }
 
+    // Option to ignore tablet options and avoid calling WTOpen() for
+    // each single window (e.g. tooltips don't need the tablet).
+#if LAF_WINDOWS
+    bool useTabletOptions() const { return m_useTabletOptions; }
+    void useTabletOptions(const bool s) { m_useTabletOptions = s; }
+#endif
+
     const gfx::Rect& frame() const { return m_frame; }
     const gfx::Rect& contentRect() const { return m_contentRect; }
     int scale() const { return m_scale; }
@@ -83,6 +90,9 @@ namespace os {
     int m_scale = 1;
     ScreenRef m_screen;
     Window* m_parent = nullptr;
+#if LAF_WINDOWS
+    bool m_useTabletOptions = true;
+#endif
   };
 
 } // namespace os