Add a akeyboard shortcut to toggle full-screen mode

CHANGELOG.rst

@@ -12,6 +12,8 @@ version 0.5.0 [future]
 
 - Add an option to have window focus follow mouse
 
+- Add a keyboard shortcut (ctrl+shift+f11) to toggle fullscreen mode
+
 - macOS: Fix handling of option key. It now behaves just like the alt key on
   Linux. There is an option to make it type unicode characters instead.
 

kitty/boss.py

@@ -109,6 +109,9 @@ class Boss:
         for window in tab:
             self.close_window(window)
 
+    def toggle_fullscreen(self):
+        self.glfw_window.toggle_fullscreen()
+
     def start(self):
         if not getattr(self, 'io_thread_started', False):
             self.child_monitor.start()

kitty/glfw.c

@@ -36,12 +36,18 @@
 #define WINDOW_CALLBACK(name, fmt, ...) \
     CALLBACK(the_window->name, "O" fmt, the_window, __VA_ARGS__);
 
+typedef struct {
+    int x, y, w, h;
+    bool is_set;
+} GLFWWindowGeometry;
+
 typedef struct {
     PyObject_HEAD
 
     GLFWwindow *window;
     PyObject *framebuffer_size_callback, *window_focus_callback;
     GLFWcursor *standard_cursor, *click_cursor, *arrow_cursor;
+    GLFWWindowGeometry before_fullscreen;
 } WindowWrapper;
 
 static void update_viewport(GLFWwindow *window) {
@@ -429,6 +435,28 @@ current_monitor_dpi(WindowWrapper *self) {
     return get_physical_dpi(m);
 }
 
+static PyObject*
+toggle_fullscreen(WindowWrapper *self) {
+    GLFWmonitor *monitor;
+    if ((monitor = glfwGetWindowMonitor(self->window)) == NULL) {
+        // make fullscreen
+        monitor = current_monitor(self->window);
+        if (monitor == NULL) return NULL;
+        const GLFWvidmode* mode = glfwGetVideoMode(monitor);
+        self->before_fullscreen.is_set = true;
+        glfwGetWindowSize(self->window, &self->before_fullscreen.w, &self->before_fullscreen.h);
+        glfwGetWindowPos(self->window, &self->before_fullscreen.x, &self->before_fullscreen.y);
+        glfwSetWindowMonitor(self->window, monitor, 0, 0, mode->width, mode->height, mode->refreshRate);
+        Py_RETURN_TRUE;
+    } else {
+        // make windowed
+        const GLFWvidmode* mode = glfwGetVideoMode(monitor);
+        if (self->before_fullscreen.is_set) glfwSetWindowMonitor(self->window, NULL, self->before_fullscreen.x, self->before_fullscreen.y, self->before_fullscreen.w, self->before_fullscreen.h, mode->refreshRate);
+        else glfwSetWindowMonitor(self->window, NULL, 0, 0, 600, 400, mode->refreshRate);
+        Py_RETURN_FALSE;
+    }
+}
+
 void
 request_window_attention() {
 #ifdef has_request_attention
@@ -477,6 +505,7 @@ static PyMethodDef methods[] = {
     MND(should_close, METH_NOARGS),
     MND(get_framebuffer_size, METH_NOARGS),
     MND(get_window_size, METH_NOARGS),
+    MND(toggle_fullscreen, METH_NOARGS),
     MND(current_monitor_dpi, METH_NOARGS),
 #ifdef __APPLE__
     MND(cocoa_window_id, METH_NOARGS),

kitty/kitty.conf

@@ -282,6 +282,7 @@ map ctrl+shift+,        move_tab_backward
 map ctrl+shift+equal    increase_font_size
 map ctrl+shift+minus    decrease_font_size
 map ctrl+shift+backspace restore_font_size
+map ctrl+shift+f11      toggle_fullscreen
 
 # Sending arbitrary text on shortcut key presses
 # You can tell kitty to send arbitrary (UTF-8) encoded text to