From 89f7d320b04423d8594fedf8bca66422240cc0a5 Mon Sep 17 00:00:00 2001
From: trilader <trilader@schroedingers-bit.net>
Date: Wed, 2 Dec 2020 23:06:42 +0100
Subject: [PATCH] Add support for timeouts in tp_wait_for_event

---
 tui.cpp | 12 ++++++++++--
 tui.h   |  3 ++-
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/tui.cpp b/tui.cpp
index 19e66b9..c70f010 100644
--- a/tui.cpp
+++ b/tui.cpp
@@ -41,6 +41,8 @@ static void convert_tp_event(void *, termpaint_event *tp_event) {
 }
 
 std::optional<Event> wait_for_event(termpaint_integration *integration, int timeout) {
+    const int cols = termpaint_surface_width(surface);
+    const int rows = termpaint_surface_height(surface);
     while (eventqueue.empty()) {
         bool ok = false;
         if(timeout > 0)
@@ -49,8 +51,14 @@ std::optional<Event> wait_for_event(termpaint_integration *integration, int time
             ok = termpaintx_full_integration_do_iteration(integration);
         if (!ok) {
             return {}; // or some other error handling
+        } else if(cols != termpaint_surface_width(surface) || rows != termpaint_surface_height(surface)) {
+            Event e;
+            e.modifier = 0;
+            e.type = EV_RESIZE;
+            eventqueue.push_back(e);
         } else if(timeout == 0) {
             Event e;
+            e.modifier = 0;
             e.type = EV_TIMEOUT;
             eventqueue.push_back(e);
         }
@@ -111,9 +119,9 @@ void tp_flush(const bool force)
     termpaint_terminal_flush(terminal, force);
 }
 
-std::optional<Event> tp_wait_for_event()
+std::optional<Event> tp_wait_for_event(int timeout)
 {
-    return wait_for_event(integration, 0);
+    return wait_for_event(integration, timeout);
 }
 
 static std::string repeated(const int n, const std::string &what)
diff --git a/tui.h b/tui.h
index 4d86f32..10d9c37 100644
--- a/tui.h
+++ b/tui.h
@@ -4,6 +4,7 @@
 #include <termpaintx.h>
 #define EV_TIMEOUT 0xffff
 #define EV_IGNORE 0xfffe
+#define EV_RESIZE 0xfffd
 
 #include <functional>
 #include <optional>
@@ -58,7 +59,7 @@ void tp_shutdown();
 void tp_flush(const bool force=false);
 void tp_pause();
 void tp_unpause();
-std::optional<Event> tp_wait_for_event();
+std::optional<Event> tp_wait_for_event(int timeout=0);
 
 struct action
 {