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Backends: GLFW: added ImGui_ImplGlfw_IsWayland(). (#8921, #8920)

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(technically presently untested but we've researched this)
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ocornut
2025-09-15 18:20:07 +02:00
parent 3c6c5692b8
commit 10d0162378
1 changed files with 40 additions and 11 deletions
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49
backends/imgui_impl_glfw.cpp
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@@ -104,20 +104,25 @@
// GLFW
#include <GLFW/glfw3.h>
#ifdef _WIN32
#undef APIENTRY
#ifndef GLFW_EXPOSE_NATIVE_WIN32
#ifndef GLFW_EXPOSE_NATIVE_WIN32 // for glfwGetWin32Window()
#define GLFW_EXPOSE_NATIVE_WIN32
#endif
#include <GLFW/glfw3native.h> // for glfwGetWin32Window()
#endif
#ifdef __APPLE__
#ifndef GLFW_EXPOSE_NATIVE_COCOA
#elif defined(__APPLE__)
#ifndef GLFW_EXPOSE_NATIVE_COCOA // for glfwGetCocoaWindow()
#define GLFW_EXPOSE_NATIVE_COCOA
#endif
#include <GLFW/glfw3native.h> // for glfwGetCocoaWindow()
#elif !defined(__EMSCRIPTEN__)
#ifndef GLFW_EXPOSE_NATIVE_X11 // for glfwGetX11Window() on Freedesktop (Linux, BSD, etc.)
#define GLFW_EXPOSE_NATIVE_X11
#endif
#ifndef GLFW_EXPOSE_NATIVE_WAYLAND
#define GLFW_EXPOSE_NATIVE_WAYLAND
#endif
#endif
#include <GLFW/glfw3native.h>
#undef Status // X11 headers are leaking this.
#ifndef _WIN32
#include <unistd.h> // for usleep()
#endif
@@ -144,6 +149,12 @@
#define GLFW_HAS_GAMEPAD_API (GLFW_VERSION_COMBINED >= 3300) // 3.3+ glfwGetGamepadState() new api
#define GLFW_HAS_GETKEYNAME (GLFW_VERSION_COMBINED >= 3200) // 3.2+ glfwGetKeyName()
#define GLFW_HAS_GETERROR (GLFW_VERSION_COMBINED >= 3300) // 3.3+ glfwGetError()
#define GLFW_HAS_GETPLATFORM (GLFW_VERSION_COMBINED >= 3400) // 3.4+ glfwGetPlatform()
#if defined(__linux__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) || defined(__DragonFly__)
#define GLFW_HAS_X11_OR_WAYLAND 1
#else
#define GLFW_HAS_X11_OR_WAYLAND 0
#endif
// Map GLFWWindow* to ImGuiContext*.
// - Would be simpler if we could use glfwSetWindowUserPointer()/glfwGetWindowUserPointer(), but this is a single and shared resource.
@@ -155,14 +166,14 @@ static void ImGui_ImplGlfw_ContextMap_Add(GLFWwindow* window, ImGuiContext* ctx)
static void ImGui_ImplGlfw_ContextMap_Remove(GLFWwindow* window) { for (ImGui_ImplGlfw_WindowToContext& entry : g_ContextMap) if (entry.Window == window) { g_ContextMap.erase_unsorted(&entry); return; } }
static ImGuiContext* ImGui_ImplGlfw_ContextMap_Get(GLFWwindow* window) { for (ImGui_ImplGlfw_WindowToContext& entry : g_ContextMap) if (entry.Window == window) return entry.Context; return nullptr; }
// GLFW data
enum GlfwClientApi
{
GlfwClientApi_Unknown,
GlfwClientApi_OpenGL,
GlfwClientApi_Vulkan,
GlfwClientApi_Unknown, // Anything else fits here.
};
// GLFW data
struct ImGui_ImplGlfw_Data
{
ImGuiContext* Context;
@@ -172,6 +183,7 @@ struct ImGui_ImplGlfw_Data
GLFWwindow* MouseWindow;
GLFWcursor* MouseCursors[ImGuiMouseCursor_COUNT];
ImVec2 LastValidMousePos;
bool IsWayland;
bool InstalledCallbacks;
bool CallbacksChainForAllWindows;
char BackendPlatformName[32];
@@ -216,6 +228,23 @@ static ImGui_ImplGlfw_Data* ImGui_ImplGlfw_GetBackendData(GLFWwindow* window)
}
// Functions
static bool ImGui_ImplGlfw_IsWayland()
{
#if GLFW_HAS_X11_OR_WAYLAND
return false;
#elif GLFW_HAS_GETPLATFORM
return glfwGetPlatform() == GLFW_PLATFORM_WAYLAND;
#else
const char* version = glfwGetVersionString();
if (strstr(version, "Wayland") == NULL) // e.g. Ubuntu 22.04 ships with GLFW 3.3.6 compiled without Wayland
return false;
#ifdef GLFW_EXPOSE_NATIVE_X11
if (glfwGetX11Display() != NULL)
return false;
#endif
return true;
#endif
}
// Not static to allow third-party code to use that if they want to (but undocumented)
ImGuiKey ImGui_ImplGlfw_KeyToImGuiKey(int keycode, int scancode);
@@ -365,7 +394,6 @@ static bool ImGui_ImplGlfw_ShouldChainCallback(ImGui_ImplGlfw_Data* bd, GLFWwind
void ImGui_ImplGlfw_MouseButtonCallback(GLFWwindow* window, int button, int action, int mods)
{
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(window);
if (bd->PrevUserCallbackMousebutton != nullptr && ImGui_ImplGlfw_ShouldChainCallback(bd, window))
bd->PrevUserCallbackMousebutton(window, button, action, mods);
@@ -630,6 +658,7 @@ static bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks, Glfw
bd->Context = ImGui::GetCurrentContext();
bd->Window = window;
bd->Time = 0.0;
bd->IsWayland = ImGui_ImplGlfw_IsWayland();
ImGui_ImplGlfw_ContextMap_Add(window, bd->Context);
ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();