Drezil/imgui
1
0
Fork 0
mirror of https://github.com/Drezil/imgui.git synced 2025-07-04 12:08:47 +02:00
Code Issues Packages Projects Releases Wiki Activity

Backends: Win32/SDL2/SDL3/GLFW: Added support for io.AddMouseSourceEvent(). (#2334, #2702)

Browse Source 
SDL doesn't distinguish Pen yet, but we don't need it as much as TouchScreen which will alter trickling.
This commit is contained in:
ocornut
2023-04-04 19:43:51 +02:00
parent a16f99c6a2
commit f070497cbd
9 changed files with 91 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

48
backends/imgui_impl_glfw.cpp
View File

@ -5,6 +5,7 @@
// Implemented features:
// [X] Platform: Clipboard support.
// [X] Platform: Mouse support. Can discriminate Mouse/TouchScreen/Pen (Windows only).
// [X] Platform: Keyboard support. Since 1.87 we are using the io.AddKeyEvent() function. Pass ImGuiKey values to all key functions e.g. ImGui::IsKeyPressed(ImGuiKey_Space). [Legacy GLFW_KEY_* values will also be supported unless IMGUI_DISABLE_OBSOLETE_KEYIO is set]
// [X] Platform: Gamepad support. Enable with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'.
// [X] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange' (note: the resizing cursors requires GLFW 3.4+).
@ -16,6 +17,7 @@
// CHANGELOG
// (minor and older changes stripped away, please see git history for details)
// 2023-04-04: Inputs: Added support for io.AddMouseSourceEvent() to discriminate ImGuiMouseSource_Mouse/ImGuiMouseSource_TouchScreen/ImGuiMouseSource_Pen on Windows ONLY, using a custom WndProc hook. (#2702)
// 2023-03-16: Inputs: Fixed key modifiers handling on secondary viewports (docking branch). Broken on 2023/01/04. (#6248, #6034)
// 2023-03-14: Emscripten: Avoid using glfwGetError() and glfwGetGamepadState() which are not correctly implemented in Emscripten emulation. (#6240)
// 2023-02-03: Emscripten: Registering custom low-level mouse wheel handler to get more accurate scrolling impulses on Emscripten. (#4019, #6096)
@ -127,6 +129,9 @@ struct ImGui_ImplGlfw_Data
GLFWkeyfun PrevUserCallbackKey;
GLFWcharfun PrevUserCallbackChar;
GLFWmonitorfun PrevUserCallbackMonitor;
#ifdef _WIN32
WNDPROC GlfwWndProc;
#endif
ImGui_ImplGlfw_Data() { memset((void*)this, 0, sizeof(*this)); }
};
@ -444,6 +449,35 @@ static EM_BOOL ImGui_ImplEmscripten_WheelCallback(int, const EmscriptenWheelEven
}
#endif
#ifdef _WIN32
// GLFW doesn't allow to distinguish Mouse vs TouchScreen vs Pen.
// Add support for Win32 (based on imgui_impl_win32), because we rely on _TouchScreen info to trickle inputs differently.
static ImGuiMouseSource GetMouseSourceFromMessageExtraInfo()
{
LPARAM extra_info = ::GetMessageExtraInfo();
if ((extra_info & 0xFFFFFF80) == 0xFF515700)
return ImGuiMouseSource_Pen;
if ((extra_info & 0xFFFFFF80) == 0xFF515780)
return ImGuiMouseSource_TouchScreen;
return ImGuiMouseSource_Mouse;
}
static LRESULT CALLBACK ImGui_ImplGlfw_WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
switch (msg)
{
case WM_MOUSEMOVE: case WM_NCMOUSEMOVE:
case WM_LBUTTONDOWN: case WM_LBUTTONDBLCLK: case WM_LBUTTONUP:
case WM_RBUTTONDOWN: case WM_RBUTTONDBLCLK: case WM_RBUTTONUP:
case WM_MBUTTONDOWN: case WM_MBUTTONDBLCLK: case WM_MBUTTONUP:
case WM_XBUTTONDOWN: case WM_XBUTTONDBLCLK: case WM_XBUTTONUP:
ImGui::GetIO().AddMouseSourceEvent(GetMouseSourceFromMessageExtraInfo());
break;
}
return ::CallWindowProc(bd->GlfwWndProc, hWnd, msg, wParam, lParam);
}
#endif
void ImGui_ImplGlfw_InstallCallbacks(GLFWwindow* window)
{
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
@ -562,6 +596,13 @@ static bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks, Glfw
IM_UNUSED(main_viewport);
#endif
// Windows: register a WndProc hook so we can intercept some messages.
#ifdef _WIN32
bd->GlfwWndProc = (WNDPROC)::GetWindowLongPtr((HWND)main_viewport->PlatformHandleRaw, GWLP_WNDPROC);
IM_ASSERT(bd->GlfwWndProc != NULL);
::SetWindowLongPtr((HWND)main_viewport->PlatformHandleRaw, GWLP_WNDPROC, (LONG_PTR)ImGui_ImplGlfw_WndProc);
#endif
bd->ClientApi = client_api;
return true;
}
@ -593,6 +634,13 @@ void ImGui_ImplGlfw_Shutdown()
for (ImGuiMouseCursor cursor_n = 0; cursor_n < ImGuiMouseCursor_COUNT; cursor_n++)
glfwDestroyCursor(bd->MouseCursors[cursor_n]);
// Windows: register a WndProc hook so we can intercept some messages.
#ifdef _WIN32
ImGuiViewport* main_viewport = ImGui::GetMainViewport();
::SetWindowLongPtr((HWND)main_viewport->PlatformHandleRaw, GWLP_WNDPROC, (LONG_PTR)bd->GlfwWndProc);
bd->GlfwWndProc = NULL;
#endif
io.BackendPlatformName = nullptr;
io.BackendPlatformUserData = nullptr;
IM_DELETE(bd);