intern/ghost/GHOST_C-api.h

@@ -943,6 +943,11 @@ extern void GHOST_SetBacktraceHandler(GHOST_TBacktraceFn backtrace_fn);
  */
 extern void GHOST_UseWindowFocus(bool use_focus);
 
+/**
+ * Focus and raise windows on mouse hover.
+ */
+extern void GHOST_SetAutoFocus(bool auto_focus);
+
 /**
  * If window was opened using native pixel size, it returns scaling factor.
  */

intern/ghost/GHOST_ISystem.h

@@ -332,6 +332,11 @@ class GHOST_ISystem {
    */
   virtual void useWindowFocus(const bool use_focus) = 0;
 
+  /**
+   * Focus and raise windows on mouse hover.
+   */
+  virtual void setAutoFocus(const bool auto_focus) = 0;
+
   /**
    * Get the Window under the cursor.
    * \param x: The x-coordinate of the cursor.

intern/ghost/intern/GHOST_C-api.cpp

@@ -918,6 +918,12 @@ void GHOST_UseWindowFocus(bool use_focus)
   return system->useWindowFocus(use_focus);
 }
 
+void GHOST_SetAutoFocus(bool auto_focus)
+{
+  GHOST_ISystem *system = GHOST_ISystem::getSystem();
+  system->setAutoFocus(auto_focus);
+}
+
 float GHOST_GetNativePixelSize(GHOST_WindowHandle windowhandle)
 {
   GHOST_IWindow *window = (GHOST_IWindow *)windowhandle;

intern/ghost/intern/GHOST_System.cpp

@@ -23,6 +23,7 @@
 GHOST_System::GHOST_System()
     : m_nativePixel(false),
       m_windowFocus(true),
+      m_autoFocus(true),
       m_displayManager(nullptr),
       m_timerManager(nullptr),
       m_windowManager(nullptr),
@@ -412,6 +413,11 @@ void GHOST_System::useWindowFocus(const bool use_focus)
   m_windowFocus = use_focus;
 }
 
+void GHOST_System::setAutoFocus(const bool auto_focus)
+{
+  m_autoFocus = auto_focus;
+}
+
 bool GHOST_System::supportsCursorWarp()
 {
   return true;

intern/ghost/intern/GHOST_System.h

@@ -160,6 +160,12 @@ class GHOST_System : public GHOST_ISystem {
 
   bool m_windowFocus;
 
+  /**
+   * Focus and raise windows on mouse hover.
+   */
+  void setAutoFocus(const bool auto_focus);
+  bool m_autoFocus;
+
   /**
    * Get the Window under the cursor.
    * \param x: The x-coordinate of the cursor.

intern/ghost/intern/GHOST_SystemWin32.cpp

@@ -1828,10 +1828,13 @@ LRESULT WINAPI GHOST_SystemWin32::s_wndProc(HWND hwnd, uint msg, WPARAM wParam,
           if (!window->m_mousePresent) {
             WINTAB_PRINTF("HWND %p mouse enter\n", window->getHWND());
             TRACKMOUSEEVENT tme = {sizeof(tme)};
-            /* Request WM_MOUSELEAVE message when the cursor leaves the client area, and
-             * WM_MOUSEHOVER message after 50ms when in the client area. */
-            tme.dwFlags = TME_LEAVE | TME_HOVER;
-            tme.dwHoverTime = 50;
+            /* Request WM_MOUSELEAVE message when the cursor leaves the client area. */
+            tme.dwFlags = TME_LEAVE;
+            if (system->m_autoFocus) {
+              /* Request WM_MOUSEHOVER message after 100ms when in the client area. */
+              tme.dwFlags |= TME_HOVER;
+              tme.dwHoverTime = 100;
+            }
             tme.hwndTrack = hwnd;
             TrackMouseEvent(&tme);
             window->m_mousePresent = true;

source/blender/editors/interface/CMakeLists.txt

@@ -20,6 +20,7 @@ set(INC
   ../../python
   ../../render
   ../../windowmanager
+  ../../../../intern/ghost
   ../../../../intern/guardedalloc
   ../../bmesh
   # RNA_prototypes.h

source/blender/editors/interface/interface_handlers.cc

@@ -47,6 +47,8 @@
 #include "BKE_tracking.h"
 #include "BKE_unit.h"
 
+#include "GHOST_C-api.h"
+
 #include "IMB_colormanagement.h"
 
 #include "ED_screen.h"
@@ -3459,6 +3461,9 @@ static void ui_textedit_begin(bContext *C, uiBut *but, uiHandleButtonData *data)
 
   WM_cursor_modal_set(win, WM_CURSOR_TEXT_EDIT);
 
+  /* Temporarily turn off window auto-focus on platforms that support it. */
+  GHOST_SetAutoFocus(false);
+
 #ifdef WITH_INPUT_IME
   if (!is_num_but) {
     ui_textedit_ime_begin(win, but);
@@ -3514,6 +3519,9 @@ static void ui_textedit_end(bContext *C, uiBut *but, uiHandleButtonData *data)
 
   WM_cursor_modal_restore(win);
 
+  /* Turn back on the auto-focusing of windows. */
+  GHOST_SetAutoFocus(true);
+
   /* Free text undo history text blocks. */
   ui_textedit_undo_stack_destroy(data->undo_stack_text);
   data->undo_stack_text = nullptr;