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Backends: GLFW: Added ImGui_ImplGlfw_InstallCallbacks()/ImGui_ImplGlfw_RestoreCallbacks(). (#4981)
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@ -16,6 +16,7 @@
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// CHANGELOG
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// (minor and older changes stripped away, please see git history for details)
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// 2022-02-07: Added ImGui_ImplGlfw_InstallCallbacks()/ImGui_ImplGlfw_RestoreCallbacks() helpers to facilitate user installing callbacks after iniitializing backend.
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// 2022-01-26: Inputs: replaced short-lived io.AddKeyModsEvent() (added two weeks ago)with io.AddKeyEvent() using ImGuiKey_ModXXX flags. Sorry for the confusion.
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// 2021-01-20: Inputs: calling new io.AddKeyAnalogEvent() for gamepad support, instead of writing directly to io.NavInputs[].
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// 2022-01-17: Inputs: calling new io.AddMousePosEvent(), io.AddMouseButtonEvent(), io.AddMouseWheelEvent() API (1.87+).
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@ -68,13 +69,13 @@
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#define GLFW_EXPOSE_NATIVE_WIN32
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#include <GLFW/glfw3native.h> // for glfwGetWin32Window
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#endif
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#ifdef GLFW_RESIZE_NESW_CURSOR // Let's be nice to people who pulled GLFW between 2019-04-16 (3.4 define) and 2019-11-29 (cursors defines) // FIXME: Remove when GLFW 3.4 is released?
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#define GLFW_HAS_NEW_CURSORS (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3400) // 3.4+ GLFW_RESIZE_ALL_CURSOR, GLFW_RESIZE_NESW_CURSOR, GLFW_RESIZE_NWSE_CURSOR, GLFW_NOT_ALLOWED_CURSOR
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#ifdef GLFW_RESIZE_NESW_CURSOR // Let's be nice to people who pulled GLFW between 2019-04-16 (3.4 define) and 2019-11-29 (cursors defines) // FIXME: Remove when GLFW 3.4 is released?
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#define GLFW_HAS_NEW_CURSORS (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3400) // 3.4+ GLFW_RESIZE_ALL_CURSOR, GLFW_RESIZE_NESW_CURSOR, GLFW_RESIZE_NWSE_CURSOR, GLFW_NOT_ALLOWED_CURSOR
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#else
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#define GLFW_HAS_NEW_CURSORS (0)
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#define GLFW_HAS_NEW_CURSORS (0)
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#endif
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#define GLFW_HAS_GAMEPAD_API (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3300) // 3.3+ glfwGetGamepadState() new api
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#define GLFW_HAS_GET_KEY_NAME (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3200) // 3.2+ glfwGetKeyName()
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#define GLFW_HAS_GAMEPAD_API (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3300) // 3.3+ glfwGetGamepadState() new api
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#define GLFW_HAS_GET_KEY_NAME (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3200) // 3.2+ glfwGetKeyName()
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// GLFW data
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enum GlfwClientApi
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@ -91,7 +92,7 @@ struct ImGui_ImplGlfw_Data
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double Time;
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GLFWwindow* MouseWindow;
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GLFWcursor* MouseCursors[ImGuiMouseCursor_COUNT];
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ImVec2 LastMousePos;
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ImVec2 LastValidMousePos;
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bool InstalledCallbacks;
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// Chain GLFW callbacks: our callbacks will call the user's previously installed callbacks, if any.
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@ -339,7 +340,7 @@ void ImGui_ImplGlfw_CursorPosCallback(GLFWwindow* window, double x, double y)
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ImGuiIO& io = ImGui::GetIO();
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io.AddMousePosEvent((float)x, (float)y);
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bd->LastMousePos = ImVec2((float)x, (float)y);
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bd->LastValidMousePos = ImVec2((float)x, (float)y);
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}
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// Workaround: X11 seems to send spurious Leave/Enter events which would make us lose our position,
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@ -354,11 +355,11 @@ void ImGui_ImplGlfw_CursorEnterCallback(GLFWwindow* window, int entered)
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if (entered)
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{
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bd->MouseWindow = window;
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io.AddMousePosEvent(bd->LastMousePos.x, bd->LastMousePos.y);
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io.AddMousePosEvent(bd->LastValidMousePos.x, bd->LastValidMousePos.y);
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}
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else if (!entered && bd->MouseWindow == window)
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{
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bd->LastMousePos = io.MousePos;
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bd->LastValidMousePos = io.MousePos;
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bd->MouseWindow = NULL;
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io.AddMousePosEvent(-FLT_MAX, -FLT_MAX);
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}
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@ -379,6 +380,48 @@ void ImGui_ImplGlfw_MonitorCallback(GLFWmonitor*, int)
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// Unused in 'master' branch but 'docking' branch will use this, so we declare it ahead of it so if you have to install callbacks you can install this one too.
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}
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void ImGui_ImplGlfw_InstallCallbacks(GLFWwindow* window)
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{
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ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
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IM_ASSERT(bd->InstalledCallbacks == false && "Callbacks already installed!");
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IM_ASSERT(bd->Window == window);
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bd->PrevUserCallbackWindowFocus = glfwSetWindowFocusCallback(window, ImGui_ImplGlfw_WindowFocusCallback);
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bd->PrevUserCallbackCursorEnter = glfwSetCursorEnterCallback(window, ImGui_ImplGlfw_CursorEnterCallback);
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bd->PrevUserCallbackCursorPos = glfwSetCursorPosCallback(window, ImGui_ImplGlfw_CursorPosCallback);
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bd->PrevUserCallbackMousebutton = glfwSetMouseButtonCallback(window, ImGui_ImplGlfw_MouseButtonCallback);
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bd->PrevUserCallbackScroll = glfwSetScrollCallback(window, ImGui_ImplGlfw_ScrollCallback);
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bd->PrevUserCallbackKey = glfwSetKeyCallback(window, ImGui_ImplGlfw_KeyCallback);
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bd->PrevUserCallbackChar = glfwSetCharCallback(window, ImGui_ImplGlfw_CharCallback);
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bd->PrevUserCallbackMonitor = glfwSetMonitorCallback(ImGui_ImplGlfw_MonitorCallback);
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bd->InstalledCallbacks = true;
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}
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void ImGui_ImplGlfw_RestoreCallbacks(GLFWwindow* window)
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{
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ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
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IM_ASSERT(bd->InstalledCallbacks == true && "Callbacks not installed!");
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IM_ASSERT(bd->Window == window);
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glfwSetWindowFocusCallback(window, bd->PrevUserCallbackWindowFocus);
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glfwSetCursorEnterCallback(window, bd->PrevUserCallbackCursorEnter);
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glfwSetCursorPosCallback(window, bd->PrevUserCallbackCursorPos);
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glfwSetMouseButtonCallback(window, bd->PrevUserCallbackMousebutton);
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glfwSetScrollCallback(window, bd->PrevUserCallbackScroll);
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glfwSetKeyCallback(window, bd->PrevUserCallbackKey);
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glfwSetCharCallback(window, bd->PrevUserCallbackChar);
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glfwSetMonitorCallback(bd->PrevUserCallbackMonitor);
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bd->InstalledCallbacks = false;
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bd->PrevUserCallbackWindowFocus = NULL;
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bd->PrevUserCallbackCursorEnter = NULL;
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bd->PrevUserCallbackCursorPos = NULL;
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bd->PrevUserCallbackMousebutton = NULL;
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bd->PrevUserCallbackScroll = NULL;
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bd->PrevUserCallbackKey = NULL;
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bd->PrevUserCallbackChar = NULL;
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bd->PrevUserCallbackMonitor = NULL;
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}
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static bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks, GlfwClientApi client_api)
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{
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ImGuiIO& io = ImGui::GetIO();
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@ -427,25 +470,8 @@ static bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks, Glfw
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glfwSetErrorCallback(prev_error_callback);
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// Chain GLFW callbacks: our callbacks will call the user's previously installed callbacks, if any.
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bd->PrevUserCallbackWindowFocus = NULL;
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bd->PrevUserCallbackCursorEnter = NULL;
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bd->PrevUserCallbackMousebutton = NULL;
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bd->PrevUserCallbackScroll = NULL;
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bd->PrevUserCallbackKey = NULL;
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bd->PrevUserCallbackChar = NULL;
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bd->PrevUserCallbackMonitor = NULL;
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if (install_callbacks)
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{
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bd->InstalledCallbacks = true;
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bd->PrevUserCallbackWindowFocus = glfwSetWindowFocusCallback(window, ImGui_ImplGlfw_WindowFocusCallback);
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bd->PrevUserCallbackCursorEnter = glfwSetCursorEnterCallback(window, ImGui_ImplGlfw_CursorEnterCallback);
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bd->PrevUserCallbackCursorPos = glfwSetCursorPosCallback(window, ImGui_ImplGlfw_CursorPosCallback);
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bd->PrevUserCallbackMousebutton = glfwSetMouseButtonCallback(window, ImGui_ImplGlfw_MouseButtonCallback);
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bd->PrevUserCallbackScroll = glfwSetScrollCallback(window, ImGui_ImplGlfw_ScrollCallback);
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bd->PrevUserCallbackKey = glfwSetKeyCallback(window, ImGui_ImplGlfw_KeyCallback);
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bd->PrevUserCallbackChar = glfwSetCharCallback(window, ImGui_ImplGlfw_CharCallback);
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bd->PrevUserCallbackMonitor = glfwSetMonitorCallback(ImGui_ImplGlfw_MonitorCallback);
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}
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ImGui_ImplGlfw_InstallCallbacks(window);
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bd->ClientApi = client_api;
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return true;
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@ -473,16 +499,7 @@ void ImGui_ImplGlfw_Shutdown()
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ImGuiIO& io = ImGui::GetIO();
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if (bd->InstalledCallbacks)
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{
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glfwSetWindowFocusCallback(bd->Window, bd->PrevUserCallbackWindowFocus);
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glfwSetCursorEnterCallback(bd->Window, bd->PrevUserCallbackCursorEnter);
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glfwSetCursorPosCallback(bd->Window, bd->PrevUserCallbackCursorPos);
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glfwSetMouseButtonCallback(bd->Window, bd->PrevUserCallbackMousebutton);
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glfwSetScrollCallback(bd->Window, bd->PrevUserCallbackScroll);
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glfwSetKeyCallback(bd->Window, bd->PrevUserCallbackKey);
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glfwSetCharCallback(bd->Window, bd->PrevUserCallbackChar);
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glfwSetMonitorCallback(bd->PrevUserCallbackMonitor);
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}
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ImGui_ImplGlfw_RestoreCallbacks(bd->Window);
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for (ImGuiMouseCursor cursor_n = 0; cursor_n < ImGuiMouseCursor_COUNT; cursor_n++)
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glfwDestroyCursor(bd->MouseCursors[cursor_n]);
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@ -514,6 +531,7 @@ static void ImGui_ImplGlfw_UpdateMouseData()
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double mouse_x, mouse_y;
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glfwGetCursorPos(bd->Window, &mouse_x, &mouse_y);
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io.AddMousePosEvent((float)mouse_x, (float)mouse_y);
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bd->LastValidMousePos = ImVec2((float)mouse_x, (float)mouse_y);
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}
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}
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}
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@ -29,9 +29,13 @@ IMGUI_IMPL_API bool ImGui_ImplGlfw_InitForOther(GLFWwindow* window, bool ins
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IMGUI_IMPL_API void ImGui_ImplGlfw_Shutdown();
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IMGUI_IMPL_API void ImGui_ImplGlfw_NewFrame();
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// GLFW callbacks
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// - When calling Init with 'install_callbacks=true': GLFW callbacks will be installed for you. They will call user's previously installed callbacks, if any.
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// - When calling Init with 'install_callbacks=false': GLFW callbacks won't be installed. You will need to call those function yourself from your own GLFW callbacks.
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// GLFW callbacks (installer)
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// - When calling Init with 'install_callbacks=true': ImGui_ImplGlfw_InstallCallbacks() is called. GLFW callbacks will be installed for you. They will chain-call user's previously installed callbacks, if any.
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// - When calling Init with 'install_callbacks=false': GLFW callbacks won't be installed. You will need to call individual function yourself from your own GLFW callbacks.
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IMGUI_IMPL_API void ImGui_ImplGlfw_InstallCallbacks(GLFWwindow* window);
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IMGUI_IMPL_API void ImGui_ImplGlfw_RestoreCallbacks(GLFWwindow* window);
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// GLFW callbacks (individual callbacks to call if you didn't install callbacks)
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IMGUI_IMPL_API void ImGui_ImplGlfw_WindowFocusCallback(GLFWwindow* window, int focused); // Since 1.84
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IMGUI_IMPL_API void ImGui_ImplGlfw_CursorEnterCallback(GLFWwindow* window, int entered); // Since 1.84
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IMGUI_IMPL_API void ImGui_ImplGlfw_CursorPosCallback(GLFWwindow* window, double x, double y); // Since 1.87
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@ -134,6 +134,8 @@ Other Changes:
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- Backends: GLFW: Submit mouse data using io.AddMousePosEvent(), AddMouseButtonEvent(), AddMouseWheelEvent() functions. (#4858)
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- Backends: GLFW: Retrieve mouse position using glfwSetCursorPosCallback() + fallback when focused but not hovered/captured.
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- Backends: GLFW: Submit gamepad data using io.AddKeyEvent/AddKeyAnalogEvent() functions, stopped writing to io.NavInputs[]. (#4858)
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- Backends: GLFW: Added ImGui_ImplGlfw_InstallCallbacks()/ImGui_ImplGlfw_RestoreCallbacks() helpers to facilitate user installing
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callbacks after iniitializing backend. (#4981)
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- Backends: Win32: Submit keys using io.AddKeyEvent(). Submit keymods using io.AddKeyModsEvent() at the same time. (#2625)
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- Backends: Win32: Retrieve mouse position using WM_MOUSEMOVE/WM_MOUSELEAVE + fallback when focused but not hovered/captured.
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- Backends: Win32: Submit mouse data using io.AddMousePosEvent(), AddMouseButtonEvent(), AddMouseWheelEvent() functions. (#4858)
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