@ -18,6 +18,7 @@
# define WIN32_LEAN_AND_MEAN
# endif
# include <windows.h>
# include <windowsx.h> // GET_X_LPARAM(), GET_Y_LPARAM()
# include <tchar.h>
# include <dwmapi.h>
@ -33,6 +34,7 @@ typedef DWORD (WINAPI *PFN_XInputGetState)(DWORD, XINPUT_STATE*);
// CHANGELOG
// (minor and older changes stripped away, please see git history for details)
// 2022-01-12: Update mouse inputs using WM_MOUSEMOVE/WM_MOUSELEAVE + fallback to provide it when focused but not hovered/captured. More standard and will allow us to pass it to future input queue API.
// 2022-01-12: Maintain our own copy of MouseButtonsDown mask instead of using ImGui::IsAnyMouseDown() which will be obsoleted.
// 2022-01-10: Inputs: calling new io.AddKeyEvent(), io.AddKeyModsEvent() + io.SetKeyEventNativeData() API (1.87+). Support for full ImGuiKey range.
// 2021-12-16: Inputs: Fill VK_LCONTROL/VK_RCONTROL/VK_LSHIFT/VK_RSHIFT/VK_LMENU/VK_RMENU for completeness.
@ -240,38 +242,31 @@ static void ImGui_ImplWin32_UpdateKeyModifiers()
io . AddKeyModsEvent ( key_mods ) ;
}
static void ImGui_ImplWin32_UpdateMousePos ( )
static void ImGui_ImplWin32_UpdateMouseData ( )
{
ImGui_ImplWin32_Data * bd = ImGui_ImplWin32_GetBackendData ( ) ;
ImGuiIO & io = ImGui : : GetIO ( ) ;
IM_ASSERT ( bd - > hWnd ! = 0 ) ;
const ImVec2 mouse_pos_prev = io . MousePos ;
io . MousePos = ImVec2 ( - FLT_MAX , - FLT_MAX ) ;
// Obtain focused and hovered window. We forward mouse input when focused or when hovered (and no other window is capturing)
HWND focused_window = : : GetForegroundWindow ( ) ;
HWND hovered_window = bd - > MouseHwnd ;
HWND mouse_window = NULL ;
if ( hovered_window & & ( hovered_window = = bd - > hWnd | | : : IsChild ( hovered_window , bd - > hWnd ) ) )
mouse_window = hovered_window ;
else if ( focused_window & & ( focused_window = = bd - > hWnd | | : : IsChild ( focused_window , bd - > hWnd ) ) )
mouse_window = focused_window ;
if ( mouse_window = = NULL )
return ;
// Set OS mouse position from Dear ImGui if requested (rarely used, only when ImGuiConfigFlags_NavEnableSetMousePos is enabled by user)
if ( io . WantSetMousePos )
const bool is_app_focused = ( : : GetForegroundWindow ( ) = = bd - > hWnd ) ;
if ( is_app_focused )
{
POINT pos = { ( int ) mouse_pos_prev . x , ( int ) mouse_pos_prev . y } ;
if ( : : ClientToScreen ( bd - > hWnd , & pos ) )
: : SetCursorPos ( pos . x , pos . y ) ;
}
// (Optional) Set OS mouse position from Dear ImGui if requested (rarely used, only when ImGuiConfigFlags_NavEnableSetMousePos is enabled by user)
if ( io . WantSetMousePos )
{
POINT pos = { ( int ) io . MousePos . x , ( int ) io . MousePos . y } ;
if ( : : ClientToScreen ( bd - > hWnd , & pos ) )
: : SetCursorPos ( pos . x , pos . y ) ;
}
// Set Dear ImGui mouse position from OS position
POINT pos ;
if ( : : GetCursorPos ( & pos ) & & : : ScreenToClient ( mouse_window , & pos ) )
io . MousePos = ImVec2 ( ( float ) pos . x , ( float ) pos . y ) ;
// (Optional) Fallback to provide mouse position when focused (WM_MOUSEMOVE already provides this when hovered or captured)
if ( ! io . WantSetMousePos & & ! bd - > MouseTracked )
{
POINT pos ;
if ( : : GetCursorPos ( & pos ) & & : : ScreenToClient ( bd - > hWnd , & pos ) )
io . MousePos = ImVec2 ( ( float ) pos . x , ( float ) pos . y ) ;
}
}
}
// Gamepad navigation mapping
@ -341,15 +336,15 @@ void ImGui_ImplWin32_NewFrame()
io . DeltaTime = ( float ) ( current_time - bd - > Time ) / bd - > TicksPerSecond ;
bd - > Time = current_time ;
// Update OS mouse position
ImGui_ImplWin32_UpdateMouseData ( ) ;
// Process workarounds for known Windows key handling issues
ImGui_ImplWin32_ProcessKeyEventsWorkarounds ( ) ;
// Update key modifiers
ImGui_ImplWin32_UpdateKeyModifiers ( ) ;
// Update OS mouse position
ImGui_ImplWin32_UpdateMousePos ( ) ;
// Update OS mouse cursor with the cursor requested by imgui
ImGuiMouseCursor mouse_cursor = io . MouseDrawCursor ? ImGuiMouseCursor_None : ImGui : : GetMouseCursor ( ) ;
if ( bd - > LastMouseCursor ! = mouse_cursor )
@ -517,11 +512,13 @@ IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hwnd, UINT msg, WPARA
: : TrackMouseEvent ( & tme ) ;
bd - > MouseTracked = true ;
}
io . MousePos = ImVec2 ( ( float ) GET_X_LPARAM ( lParam ) , ( float ) GET_Y_LPARAM ( lParam ) ) ;
break ;
case WM_MOUSELEAVE :
if ( bd - > MouseHwnd = = hwnd )
bd - > MouseHwnd = NULL ;
bd - > MouseTracked = false ;
io . MousePos = ImVec2 ( - FLT_MAX , - FLT_MAX ) ;
break ;
case WM_LBUTTONDOWN : case WM_LBUTTONDBLCLK :
case WM_RBUTTONDOWN : case WM_RBUTTONDBLCLK :
@ -535,8 +532,8 @@ IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hwnd, UINT msg, WPARA
if ( msg = = WM_XBUTTONDOWN | | msg = = WM_XBUTTONDBLCLK ) { button = ( GET_XBUTTON_WPARAM ( wParam ) = = XBUTTON1 ) ? 3 : 4 ; }
if ( bd - > MouseButtonsDown = = 0 & & : : GetCapture ( ) = = NULL )
: : SetCapture ( hwnd ) ;
io . MouseDown [ button ] = true ;
bd - > MouseButtonsDown | = 1 < < button ;
io . MouseDown [ button ] = true ;
return 0 ;
}
case WM_LBUTTONUP :
@ -549,10 +546,10 @@ IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hwnd, UINT msg, WPARA
if ( msg = = WM_RBUTTONUP ) { button = 1 ; }
if ( msg = = WM_MBUTTONUP ) { button = 2 ; }
if ( msg = = WM_XBUTTONUP ) { button = ( GET_XBUTTON_WPARAM ( wParam ) = = XBUTTON1 ) ? 3 : 4 ; }
io . MouseDown [ button ] = false ;
bd - > MouseButtonsDown & = ~ ( 1 < < button ) ;
if ( bd - > MouseButtonsDown = = 0 & & : : GetCapture ( ) = = hwnd )
: : ReleaseCapture ( ) ;
io . MouseDown [ button ] = false ;
return 0 ;
}
case WM_MOUSEWHEEL :
ocornut
3 years ago