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Diffstat (limited to '')
| -rw-r--r-- | widget/gtk/WidgetUtilsGtk.cpp | 446 |
1 files changed, 446 insertions, 0 deletions
diff --git a/widget/gtk/WidgetUtilsGtk.cpp b/widget/gtk/WidgetUtilsGtk.cpp new file mode 100644 index 0000000000..29368b3823 --- /dev/null +++ b/widget/gtk/WidgetUtilsGtk.cpp @@ -0,0 +1,446 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "WidgetUtilsGtk.h" + +#include "MainThreadUtils.h" +#include "mozilla/StaticPrefs_widget.h" +#include "mozilla/UniquePtr.h" +#include "nsReadableUtils.h" +#include "nsString.h" +#include "nsStringFwd.h" +#include "nsWindow.h" +#include "nsIGfxInfo.h" +#include "mozilla/Components.h" +#include "nsGtkKeyUtils.h" +#include "nsGtkUtils.h" + +#include <gtk/gtk.h> +#include <dlfcn.h> +#include <glib.h> + +#ifdef MOZ_LOGGING +# include "mozilla/Logging.h" +extern mozilla::LazyLogModule gWidgetLog; +# define LOGW(...) MOZ_LOG(gWidgetLog, mozilla::LogLevel::Debug, (__VA_ARGS__)) +#else +# define LOGW(...) +#endif /* MOZ_LOGGING */ + +namespace mozilla::widget { + +int32_t WidgetUtilsGTK::IsTouchDeviceSupportPresent() { + int32_t result = 0; + GdkDisplay* display = gdk_display_get_default(); + if (!display) { + return 0; + } + + GdkDeviceManager* manager = gdk_display_get_device_manager(display); + if (!manager) { + return 0; + } + + GList* devices = + gdk_device_manager_list_devices(manager, GDK_DEVICE_TYPE_SLAVE); + GList* list = devices; + + while (devices) { + GdkDevice* device = static_cast<GdkDevice*>(devices->data); + if (gdk_device_get_source(device) == GDK_SOURCE_TOUCHSCREEN) { + result = 1; + break; + } + devices = devices->next; + } + + if (list) { + g_list_free(list); + } + + return result; +} + +bool IsMainWindowTransparent() { + return nsWindow::IsToplevelWindowTransparent(); +} + +// We avoid linking gdk_*_display_get_type directly in order to avoid a runtime +// dependency on GTK built with both backends. Other X11- and Wayland-specific +// functions get stubbed out by libmozgtk and crash when called, but those +// should only be called when the matching backend is already in use. + +bool GdkIsWaylandDisplay(GdkDisplay* display) { + static auto sGdkWaylandDisplayGetType = + (GType(*)())dlsym(RTLD_DEFAULT, "gdk_wayland_display_get_type"); + return sGdkWaylandDisplayGetType && + G_TYPE_CHECK_INSTANCE_TYPE(display, sGdkWaylandDisplayGetType()); +} + +bool GdkIsX11Display(GdkDisplay* display) { + static auto sGdkX11DisplayGetType = + (GType(*)())dlsym(RTLD_DEFAULT, "gdk_x11_display_get_type"); + return sGdkX11DisplayGetType && + G_TYPE_CHECK_INSTANCE_TYPE(display, sGdkX11DisplayGetType()); +} + +bool IsXWaylandProtocol() { + static bool isXwayland = [] { + return !GdkIsWaylandDisplay() && !!getenv("WAYLAND_DISPLAY"); + }(); + return isXwayland; +} + +bool GdkIsWaylandDisplay() { + static bool isWaylandDisplay = gdk_display_get_default() && + GdkIsWaylandDisplay(gdk_display_get_default()); + return isWaylandDisplay; +} + +bool GdkIsX11Display() { + static bool isX11Display = gdk_display_get_default() + ? GdkIsX11Display(gdk_display_get_default()) + : false; + return isX11Display; +} + +GdkDevice* GdkGetPointer() { + GdkDisplay* display = gdk_display_get_default(); + GdkDeviceManager* deviceManager = gdk_display_get_device_manager(display); + return gdk_device_manager_get_client_pointer(deviceManager); +} + +static GdkEvent* sLastMousePressEvent = nullptr; +GdkEvent* GetLastMousePressEvent() { return sLastMousePressEvent; } + +void SetLastMousePressEvent(GdkEvent* aEvent) { + if (sLastMousePressEvent) { + GUniquePtr<GdkEvent> event(sLastMousePressEvent); + sLastMousePressEvent = nullptr; + } + if (!aEvent) { + return; + } + GUniquePtr<GdkEvent> event(gdk_event_copy(aEvent)); + sLastMousePressEvent = event.release(); +} + +bool IsRunningUnderSnap() { return g_getenv("SNAP_INSTANCE_NAME") != nullptr; } + +bool IsRunningUnderFlatpak() { + // https://gitlab.gnome.org/GNOME/gtk/-/blob/4300a5c609306ce77cbc8a3580c19201dccd8d13/gdk/gdk.c#L472 + static bool sRunning = [] { + return g_file_test("/.flatpak-info", G_FILE_TEST_EXISTS); + }(); + return sRunning; +} + +const char* GetSnapInstanceName() { + static const char* sInstanceName = []() -> const char* { + // Intentionally leaked, as keeping a pointer to the environment forever is + // a bit suspicious. + if (const char* instanceName = g_getenv("SNAP_INSTANCE_NAME")) { + return g_strdup(instanceName); + } + // Compatibility for snapd <= 2.35: + if (const char* instanceName = g_getenv("SNAP_NAME")) { + return g_strdup(instanceName); + } + return nullptr; + }(); + + return sInstanceName; +} + +bool ShouldUsePortal(PortalKind aPortalKind) { + static bool sPortalEnv = [] { + if (IsRunningUnderFlatpakOrSnap()) { + return true; + } + const char* portalEnvString = g_getenv("GTK_USE_PORTAL"); + return portalEnvString && atoi(portalEnvString) != 0; + }(); + + bool autoBehavior = sPortalEnv; + const int32_t pref = [&] { + switch (aPortalKind) { + case PortalKind::FilePicker: + return StaticPrefs::widget_use_xdg_desktop_portal_file_picker(); + case PortalKind::MimeHandler: + // Mime portal breaks default browser handling, see bug 1516290. + autoBehavior = IsRunningUnderFlatpakOrSnap(); + return StaticPrefs::widget_use_xdg_desktop_portal_mime_handler(); + case PortalKind::Settings: + autoBehavior = true; + return StaticPrefs::widget_use_xdg_desktop_portal_settings(); + case PortalKind::Location: + return StaticPrefs::widget_use_xdg_desktop_portal_location(); + case PortalKind::OpenUri: + return StaticPrefs::widget_use_xdg_desktop_portal_open_uri(); + } + return 2; + }(); + + switch (pref) { + case 0: + return false; + case 1: + return true; + default: + return autoBehavior; + } +} + +nsTArray<nsCString> ParseTextURIList(const nsACString& aData) { + UniquePtr<char[]> data(ToNewCString(aData)); + gchar** uris = g_uri_list_extract_uris(data.get()); + + nsTArray<nsCString> result; + for (size_t i = 0; i < g_strv_length(uris); i++) { + result.AppendElement(nsCString(uris[i])); + } + + g_strfreev(uris); + return result; +} + +#ifdef MOZ_WAYLAND +static gboolean token_failed(gpointer aData); + +class XDGTokenRequest { + public: + void SetTokenID(const char* aTokenID) { + mTransferPromise->Resolve(aTokenID, __func__); + } + void Cancel() { + mTransferPromise->Reject(false, __func__); + mActivationTimeoutID = 0; + } + + XDGTokenRequest(xdg_activation_token_v1* aXdgToken, + RefPtr<FocusRequestPromise::Private> aTransferPromise) + : mXdgToken(aXdgToken), mTransferPromise(std::move(aTransferPromise)) { + mActivationTimeoutID = + g_timeout_add(sActivationTimeout, token_failed, this); + } + ~XDGTokenRequest() { + MozClearPointer(mXdgToken, xdg_activation_token_v1_destroy); + if (mActivationTimeoutID) { + g_source_remove(mActivationTimeoutID); + } + } + + private: + xdg_activation_token_v1* mXdgToken; + RefPtr<FocusRequestPromise::Private> mTransferPromise; + guint mActivationTimeoutID; + // Reject FocusRequestPromise if we don't get XDG token in 0.5 sec. + static constexpr int sActivationTimeout = 500; +}; + +// Failed to get token in time +static gboolean token_failed(gpointer data) { + UniquePtr<XDGTokenRequest> request(static_cast<XDGTokenRequest*>(data)); + request->Cancel(); + return false; +} + +// We've got activation token from Wayland compositor so it's time to use it. +static void token_done(gpointer data, struct xdg_activation_token_v1* provider, + const char* tokenID) { + UniquePtr<XDGTokenRequest> request(static_cast<XDGTokenRequest*>(data)); + request->SetTokenID(tokenID); +} + +static const struct xdg_activation_token_v1_listener token_listener = { + token_done, +}; +#endif + +RefPtr<FocusRequestPromise> RequestWaylandFocusPromise() { +#ifdef MOZ_WAYLAND + if (!GdkIsWaylandDisplay() || !nsWindow::GetFocusedWindow() || + nsWindow::GetFocusedWindow()->IsDestroyed()) { + return nullptr; + } + + RefPtr<nsWindow> sourceWindow = nsWindow::GetFocusedWindow(); + if (!sourceWindow) { + return nullptr; + } + + RefPtr<nsWaylandDisplay> display = WaylandDisplayGet(); + xdg_activation_v1* xdg_activation = display->GetXdgActivation(); + if (!xdg_activation) { + return nullptr; + } + + wl_surface* focusSurface; + uint32_t focusSerial; + KeymapWrapper::GetFocusInfo(&focusSurface, &focusSerial); + if (!focusSurface) { + return nullptr; + } + + GdkWindow* gdkWindow = gtk_widget_get_window(sourceWindow->GetGtkWidget()); + if (!gdkWindow) { + return nullptr; + } + wl_surface* surface = gdk_wayland_window_get_wl_surface(gdkWindow); + if (focusSurface != surface) { + return nullptr; + } + + RefPtr<FocusRequestPromise::Private> transferPromise = + new FocusRequestPromise::Private(__func__); + + xdg_activation_token_v1* aXdgToken = + xdg_activation_v1_get_activation_token(xdg_activation); + xdg_activation_token_v1_add_listener( + aXdgToken, &token_listener, + new XDGTokenRequest(aXdgToken, transferPromise)); + xdg_activation_token_v1_set_serial(aXdgToken, focusSerial, + KeymapWrapper::GetSeat()); + xdg_activation_token_v1_set_surface(aXdgToken, focusSurface); + xdg_activation_token_v1_commit(aXdgToken); + + return transferPromise.forget(); +#else // !defined(MOZ_WAYLAND) + return nullptr; +#endif +} + +// https://specifications.freedesktop.org/wm-spec/1.3/ar01s05.html +static nsCString GetWindowManagerName() { + if (!GdkIsX11Display()) { + return {}; + } + +#ifdef MOZ_X11 + Display* xdisplay = gdk_x11_get_default_xdisplay(); + Window root_win = + GDK_WINDOW_XID(gdk_screen_get_root_window(gdk_screen_get_default())); + + int actual_format_return; + Atom actual_type_return; + unsigned long nitems_return; + unsigned long bytes_after_return; + unsigned char* prop_return = nullptr; + auto releaseXProperty = MakeScopeExit([&] { + if (prop_return) { + XFree(prop_return); + } + }); + + Atom property = XInternAtom(xdisplay, "_NET_SUPPORTING_WM_CHECK", true); + Atom req_type = XInternAtom(xdisplay, "WINDOW", true); + if (!property || !req_type) { + return {}; + } + int result = + XGetWindowProperty(xdisplay, root_win, property, + 0L, // offset + sizeof(Window) / 4, // length + false, // delete + req_type, &actual_type_return, &actual_format_return, + &nitems_return, &bytes_after_return, &prop_return); + + if (result != Success || bytes_after_return != 0 || nitems_return != 1) { + return {}; + } + + Window wmWindow = reinterpret_cast<Window*>(prop_return)[0]; + if (!wmWindow) { + return {}; + } + + XFree(prop_return); + prop_return = nullptr; + + property = XInternAtom(xdisplay, "_NET_WM_NAME", true); + req_type = XInternAtom(xdisplay, "UTF8_STRING", true); + if (!property || !req_type) { + return {}; + } + result = + XGetWindowProperty(xdisplay, wmWindow, property, + 0L, // offset + INT32_MAX, // length + false, // delete + req_type, &actual_type_return, &actual_format_return, + &nitems_return, &bytes_after_return, &prop_return); + if (result != Success || bytes_after_return != 0) { + return {}; + } + + return nsCString(reinterpret_cast<const char*>(prop_return)); +#else + return {}; +#endif +} + +// Getting a reliable identifier is quite tricky. We try to use the standard +// XDG_CURRENT_DESKTOP environment first, _NET_WM_NAME later, and a set of +// legacy / non-standard environment variables otherwise. +// +// Documentation for some of those can be found in: +// +// https://wiki.archlinux.org/title/Environment_variables#Examples +// https://wiki.archlinux.org/title/Xdg-utils#Environment_variables +const nsCString& GetDesktopEnvironmentIdentifier() { + MOZ_ASSERT(NS_IsMainThread()); + static const nsDependentCString sIdentifier = [] { + nsCString ident = [] { + if (const char* currentDesktop = getenv("XDG_CURRENT_DESKTOP")) { + return nsCString(currentDesktop); + } + if (auto wm = GetWindowManagerName(); !wm.IsEmpty()) { + return wm; + } + if (const char* sessionDesktop = getenv("XDG_SESSION_DESKTOP")) { + // This is not really standardized in freedesktop.org, but it is + // documented here, and should be set in systemd systems. + // https://www.freedesktop.org/software/systemd/man/pam_systemd.html#%24XDG_SESSION_DESKTOP + return nsCString(sessionDesktop); + } + // We try first the DE-specific variables, then SESSION_DESKTOP, to match + // the documented order in: + // https://wiki.archlinux.org/title/Xdg-utils#Environment_variables + if (getenv("GNOME_DESKTOP_SESSION_ID")) { + return nsCString("gnome"_ns); + } + if (getenv("KDE_FULL_SESSION")) { + return nsCString("kde"_ns); + } + if (getenv("MATE_DESKTOP_SESSION_ID")) { + return nsCString("mate"_ns); + } + if (getenv("LXQT_SESSION_CONFIG")) { + return nsCString("lxqt"_ns); + } + if (const char* desktopSession = getenv("DESKTOP_SESSION")) { + // Try the legacy DESKTOP_SESSION as a last resort. + return nsCString(desktopSession); + } + return nsCString(); + }(); + ToLowerCase(ident); + // Intentionally put into a ToNewCString copy, rather than just making a + // static nsCString to avoid leakchecking errors, since we really want to + // leak this string. + return nsDependentCString(ToNewCString(ident), ident.Length()); + }(); + return sIdentifier; +} + +bool IsGnomeDesktopEnvironment() { + return FindInReadable("gnome"_ns, GetDesktopEnvironmentIdentifier()); +} + +bool IsKdeDesktopEnvironment() { + return GetDesktopEnvironmentIdentifier().EqualsLiteral("kde"); +} + +} // namespace mozilla::widget |