Port all apps to GApplication.

Applications/Clock/main.cpp

@@ -1,10 +1,10 @@
-#include <LibGUI/GEventLoop.h>
+#include <LibGUI/GApplication.h>
 #include <LibGUI/GWindow.h>
 #include "ClockWidget.h"
 
-int main(int, char**)
+int main(int argc, char** argv)
 {
-    GEventLoop loop;
+    GApplication app(argc, argv);
 
     auto* window = new GWindow;
     window->set_title("Clock");
@@ -16,7 +16,7 @@ int main(int, char**)
     window->set_main_widget(clock_widget);
 
     window->show();
-    return loop.exec();
+    return app.exec();
 }
 
 

Applications/FileManager/main.cpp

@@ -1,7 +1,7 @@
 #include <LibGUI/GWindow.h>
 #include <LibGUI/GWidget.h>
 #include <LibGUI/GBoxLayout.h>
-#include <LibGUI/GEventLoop.h>
+#include <LibGUI/GApplication.h>
 #include <LibGUI/GStatusBar.h>
 #include <unistd.h>
 #include <stdio.h>
@@ -9,15 +9,15 @@
 
 static GWindow* make_window();
 
-int main(int, char**)
+int main(int argc, char** argv)
 {
-    GEventLoop loop;
+    GApplication app(argc, argv);
 
     auto* window = make_window();
     window->set_should_exit_app_on_close(true);
     window->show();
 
-    return loop.exec();
+    return app.exec();
 }
 
 GWindow* make_window()

Applications/FontEditor/main.cpp

@@ -1,10 +1,12 @@
 #include "FontEditor.h"
-#include <LibGUI/GEventLoop.h>
+#include <LibGUI/GApplication.h>
 #include <LibGUI/GWindow.h>
 #include <stdio.h>
 
 int main(int argc, char** argv)
 {
+    GApplication app(argc, argv);
+
     RetainPtr<Font> edited_font;
     String path;
 
@@ -22,7 +24,6 @@ int main(int argc, char** argv)
     else
         edited_font = Font::default_font().clone();
 
-    GEventLoop loop;
     auto* window = new GWindow;
     window->set_title("FontEditor");
     window->set_rect({ 50, 50, 420, 200 });
@@ -31,5 +32,5 @@ int main(int argc, char** argv)
     window->set_main_widget(font_editor);
     window->set_should_exit_app_on_close(true);
     window->show();
-    return loop.exec();
+    return app.exec();
 }

Applications/Launcher/main.cpp

@@ -2,7 +2,7 @@
 #include <LibGUI/GWindow.h>
 #include <LibGUI/GWidget.h>
 #include <LibGUI/GButton.h>
-#include <LibGUI/GEventLoop.h>
+#include <LibGUI/GApplication.h>
 #include <sys/wait.h>
 #include <signal.h>
 #include <unistd.h>
@@ -19,17 +19,17 @@ void handle_sigchld(int)
     ASSERT(pid > 0);
 }
 
-int main(int, char**)
+int main(int argc, char** argv)
 {
-    signal(SIGCHLD, handle_sigchld);
+    GApplication app(argc, argv);
 
-    GEventLoop loop;
+    signal(SIGCHLD, handle_sigchld);
 
     auto* launcher_window = make_launcher_window();
     launcher_window->set_should_exit_app_on_close(true);
     launcher_window->show();
 
-    return loop.exec();
+    return app.exec();
 }
 
 class LauncherButton final : public GButton {

Applications/Terminal/main.cpp

@@ -10,7 +10,7 @@
 #include <LibC/gui.h>
 #include "Terminal.h"
 #include <Kernel/KeyCode.h>
-#include <LibGUI/GEventLoop.h>
+#include <LibGUI/GApplication.h>
 #include <LibGUI/GNotifier.h>
 #include <LibGUI/GWidget.h>
 #include <LibGUI/GWindow.h>
@@ -53,8 +53,10 @@ static void make_shell(int ptm_fd)
     }
 }
 
-int main(int, char**)
+int main(int argc, char** argv)
 {
+    GApplication app(argc, argv);
+
     int ptm_fd = open("/dev/ptmx", O_RDWR);
     if (ptm_fd < 0) {
         perror("open(ptmx)");
@@ -63,8 +65,6 @@ int main(int, char**)
 
     make_shell(ptm_fd);
 
-    GEventLoop loop;
-
     auto* window = new GWindow;
     window->set_should_exit_app_on_close(true);
 
@@ -80,12 +80,12 @@ int main(int, char**)
         if (nread < 0) {
             dbgprintf("Terminal read error: %s\n", strerror(errno));
             perror("read(ptm)");
-            GEventLoop::main().exit(1);
+            GApplication::the().exit(1);
             return;
         }
         if (nread == 0) {
             dbgprintf("Terminal: EOF on master pty, closing.\n");
-            GEventLoop::main().exit(0);
+            GApplication::the().exit(0);
             return;
         }
         for (ssize_t i = 0; i < nread; ++i)
@@ -95,84 +95,5 @@ int main(int, char**)
 
     window->show();
 
-    return loop.exec();
-
-#if 0
-    for (;;) {
-        fd_set rfds;
-        FD_ZERO(&rfds);
-        FD_SET(ptm_fd, &rfds);
-        FD_SET(event_fd, &rfds);
-        int nfds = select(max(ptm_fd, event_fd) + 1, &rfds, nullptr, nullptr, nullptr);
-        if (nfds < 0) {
-            dbgprintf("Terminal(%u) select() failed :( errno=%d\n", getpid(), errno);
-            return 1;
-        }
-
-        if (FD_ISSET(ptm_fd, &rfds)) {
-            byte buffer[4096];
-            ssize_t nread = read(ptm_fd, buffer, sizeof(buffer));
-            if (nread < 0) {
-                dbgprintf("Terminal read error: %s\n", strerror(errno));
-                perror("read(ptm)");
-                continue;
-            }
-            if (nread == 0) {
-                dbgprintf("Terminal: EOF on master pty, closing.\n");
-                break;
-            }
-            for (ssize_t i = 0; i < nread; ++i)
-                terminal.on_char(buffer[i]);
-            terminal.update();
-        }
-
-        if (FD_ISSET(event_fd, &rfds)) {
-            GUI_Event event;
-            ssize_t nread = read(event_fd, &event, sizeof(event));
-            if (nread < 0) {
-                perror("read(event)");
-                return 1;
-            }
-
-            assert(nread != 0);
-            assert(nread == sizeof(event));
-
-            if (event.type == GUI_Event::Type::Paint) {
-                terminal.update();
-            } else if (event.type == GUI_Event::Type::KeyDown) {
-                char ch = event.key.character;
-                if (event.key.ctrl) {
-                    if (ch >= 'a' && ch <= 'z') {
-                        ch = ch - 'a' + 1;
-                    } else if (ch == '\\') {
-                        ch = 0x1c;
-                    }
-                }
-                switch (event.key.key) {
-                case KeyCode::Key_Up:
-                    write(ptm_fd, "\033[A", 3);
-                    break;
-                case KeyCode::Key_Down:
-                    write(ptm_fd, "\033[B", 3);
-                    break;
-                case KeyCode::Key_Right:
-                    write(ptm_fd, "\033[C", 3);
-                    break;
-                case KeyCode::Key_Left:
-                    write(ptm_fd, "\033[D", 3);
-                    break;
-                default:
-                    write(ptm_fd, &ch, 1);
-                }
-            } else if (event.type == GUI_Event::Type::WindowActivated) {
-                terminal.set_in_active_window(true);
-            } else if (event.type == GUI_Event::Type::WindowDeactivated) {
-                terminal.set_in_active_window(false);
-            } else if (event.type == GUI_Event::Type::WindowCloseRequest) {
-                return 0;
-            }
-        }
-    }
-#endif
-    return 0;
+    return app.exec();
 }

LibGUI/GApplication.cpp

@@ -2,8 +2,18 @@
 #include <LibGUI/GEventLoop.h>
 #include <LibGUI/GMenuBar.h>
 
+static GApplication* s_the;
+
+GApplication& GApplication::the()
+{
+    ASSERT(s_the);
+    return *s_the;
+}
+
 GApplication::GApplication(int argc, char** argv)
 {
+    ASSERT(!s_the);
+    s_the = this;
     m_event_loop = make<GEventLoop>();
 }
 
@@ -16,6 +26,11 @@ int GApplication::exec()
     return m_event_loop->exec();
 }
 
+void GApplication::exit(int exit_code)
+{
+    m_event_loop->exit(exit_code);
+}
+
 void GApplication::set_menubar(OwnPtr<GMenuBar>&& menubar)
 {
     m_menubar = move(menubar);

LibGUI/GApplication.h

@@ -7,9 +7,12 @@ class GMenuBar;
 
 class GApplication {
 public:
+    static GApplication& the();
     GApplication(int argc, char** argv);
+    ~GApplication();
 
     int exec();
+    void exit(int);
 
     void set_menubar(OwnPtr<GMenuBar>&&);
 

LibGUI/GStyle.cpp

@@ -1,7 +1,7 @@
 #include <LibGUI/GStyle.h>
 #include <SharedGraphics/Painter.h>
 
-GStyle* s_the;
+static GStyle* s_the;
 
 GStyle& GStyle::the()
 {

LibGUI/Makefile

@@ -24,6 +24,7 @@ LIBGUI_OBJS = \
     GMenuBar.o \
     GMenu.o \
     GMenuItem.o \
+    GApplication.o \
     GWindow.o
 
 OBJS = $(SHAREDGRAPHICS_OBJS) $(LIBGUI_OBJS)

Userland/guitest2.cpp

@@ -13,9 +13,9 @@
 #include <LibGUI/GWidget.h>
 #include <LibGUI/GLabel.h>
 #include <LibGUI/GButton.h>
-#include <LibGUI/GEventLoop.h>
 #include <LibGUI/GTextBox.h>
 #include <LibGUI/GCheckBox.h>
+#include <LibGUI/GApplication.h>
 #include <signal.h>
 
 static GWindow* make_font_test_window();
@@ -31,9 +31,10 @@ void handle_sigchld(int)
 
 int main(int argc, char** argv)
 {
+    GApplication app(argc, argv);
+
     signal(SIGCHLD, handle_sigchld);
 
-    GEventLoop loop;
 #if 0
     auto* font_test_window = make_font_test_window();
     font_test_window->show();
@@ -43,7 +44,7 @@ int main(int argc, char** argv)
     launcher_window->set_should_exit_app_on_close(true);
     launcher_window->show();
 
-    return loop.exec();
+    return app.exec();
 }
 
 GWindow* make_font_test_window()