From 677e13dcbb5b64ce85093b9ea5c14025964e35b9 Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Sat, 7 Jan 2023 19:27:08 -0500
Subject: Support closing views by sending a close event

---
 src/mac.m |  5 +++++
 src/win.c |  5 +++++
 src/x11.c | 30 ++++++++++++++++++++++++++----
 src/x11.h |  1 +
 4 files changed, 37 insertions(+), 4 deletions(-)

(limited to 'src')

diff --git a/src/mac.m b/src/mac.m
index 103e790..00b886c 100644
--- a/src/mac.m
+++ b/src/mac.m
@@ -1347,6 +1347,11 @@ puglSendEvent(PuglView* view, const PuglEvent* event)
     return PUGL_SUCCESS;
   }
 
+  if (event->type == PUGL_CLOSE) {
+    [view->impl->window close];
+    return PUGL_SUCCESS;
+  }
+
   return PUGL_UNSUPPORTED;
 }
 
diff --git a/src/win.c b/src/win.c
index 73f0757..79d38c2 100644
--- a/src/win.c
+++ b/src/win.c
@@ -887,6 +887,11 @@ puglStopTimer(PuglView* view, uintptr_t id)
 PuglStatus
 puglSendEvent(PuglView* view, const PuglEvent* event)
 {
+  if (event->type == PUGL_CLOSE) {
+    PostMessage(view->impl->hwnd, WM_CLOSE, 0, 0);
+    return PUGL_SUCCESS;
+  }
+
   if (event->type == PUGL_CLIENT) {
     PostMessage(view->impl->hwnd,
                 PUGL_LOCAL_CLIENT_MSG,
diff --git a/src/x11.c b/src/x11.c
index a6daf72..30a15be 100644
--- a/src/x11.c
+++ b/src/x11.c
@@ -161,6 +161,7 @@ puglInitWorldInternals(const PuglWorldType type, const PuglWorldFlags flags)
   impl->atoms.WM_PROTOCOLS     = XInternAtom(display, "WM_PROTOCOLS", 0);
   impl->atoms.WM_DELETE_WINDOW = XInternAtom(display, "WM_DELETE_WINDOW", 0);
   impl->atoms.PUGL_CLIENT_MSG  = XInternAtom(display, "_PUGL_CLIENT_MSG", 0);
+  impl->atoms.NET_CLOSE_WINDOW = XInternAtom(display, "_NET_CLOSE_WINDOW", 0);
   impl->atoms.NET_WM_NAME      = XInternAtom(display, "_NET_WM_NAME", 0);
   impl->atoms.NET_WM_STATE     = XInternAtom(display, "_NET_WM_STATE", 0);
   impl->atoms.NET_WM_STATE_DEMANDS_ATTENTION =
@@ -1162,15 +1163,36 @@ eventToX(PuglView* const view, const PuglEvent* const event)
 PuglStatus
 puglSendEvent(PuglView* const view, const PuglEvent* const event)
 {
-  XEvent xev = eventToX(view, event);
+  PuglInternals* const impl    = view->impl;
+  Display* const       display = view->world->impl->display;
+  XEvent               xev     = PUGL_INIT_STRUCT;
 
-  if (xev.type) {
-    return XSendEvent(
-             view->world->impl->display, view->impl->win, False, 0, &xev)
+  if (event->type == PUGL_CLOSE) {
+    xev.xclient.type         = ClientMessage;
+    xev.xclient.serial       = 0;
+    xev.xclient.send_event   = True;
+    xev.xclient.display      = display;
+    xev.xclient.window       = impl->win;
+    xev.xclient.message_type = view->world->impl->atoms.NET_CLOSE_WINDOW;
+    xev.xclient.format       = 32;
+    xev.xclient.data.l[0]    = CurrentTime;
+    xev.xclient.data.l[1]    = 1;
+
+    return XSendEvent(display,
+                      RootWindow(display, impl->screen),
+                      False,
+                      SubstructureNotifyMask | SubstructureRedirectMask,
+                      &xev)
              ? PUGL_SUCCESS
              : PUGL_UNKNOWN_ERROR;
   }
 
+  xev = eventToX(view, event);
+  if (xev.type) {
+    return XSendEvent(display, impl->win, False, 0, &xev) ? PUGL_SUCCESS
+                                                          : PUGL_UNKNOWN_ERROR;
+  }
+
   return PUGL_UNSUPPORTED;
 }
 
diff --git a/src/x11.h b/src/x11.h
index a34d698..de2e0d2 100644
--- a/src/x11.h
+++ b/src/x11.h
@@ -24,6 +24,7 @@ typedef struct {
   Atom WM_PROTOCOLS;
   Atom WM_DELETE_WINDOW;
   Atom PUGL_CLIENT_MSG;
+  Atom NET_CLOSE_WINDOW;
   Atom NET_WM_NAME;
   Atom NET_WM_STATE;
   Atom NET_WM_STATE_DEMANDS_ATTENTION;
-- 
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