From 4de97d51fb41d086b36b0a2ab25aa860c5ce2016 Mon Sep 17 00:00:00 2001
From: Francesco Abbate <francesco.bbt@gmail.com>
Date: Mon, 12 Apr 2021 13:31:32 +0200
Subject: [PATCH] Avoid always calling system.get_window_mode

---
 data/core/init.lua      |  5 +++++
 data/core/titleview.lua |  3 +--
 src/api/system.c        | 10 ++++++++++
 3 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/data/core/init.lua b/data/core/init.lua
index d4ef5494..6aa0b848 100644
--- a/data/core/init.lua
+++ b/data/core/init.lua
@@ -411,6 +411,7 @@ function core.init()
   core.clip_rect_stack = {{ 0,0,0,0 }}
   core.log_items = {}
   core.docs = {}
+  core.window_mode = "normal"
   core.threads = setmetatable({}, { __mode = "k" })
 
   local project_dir_abs = system.absolute_path(project_dir)
@@ -812,6 +813,10 @@ function core.on_event(type, ...)
     core.root_view:on_mouse_released(...)
   elseif type == "mousewheel" then
     core.root_view:on_mouse_wheel(...)
+  elseif type == "resized" then
+    core.window_mode = system.get_window_mode()
+  elseif type == "minimized" or type == "maximized" or type == "restored" then
+    core.window_mode = type == "restored" and "normal" or type
   elseif type == "filedropped" then
     local filename, mx, my = ...
     local info = system.get_file_info(filename)
diff --git a/data/core/titleview.lua b/data/core/titleview.lua
index 702d8b63..08f06505 100644
--- a/data/core/titleview.lua
+++ b/data/core/titleview.lua
@@ -36,8 +36,7 @@ function TitleView:update()
     self.size.y = 0
   end
   TitleView.super.update(self)
-  local window_mode = system.get_window_mode()
-  title_commands[2] = window_mode == "maximized" and restore_command or maximize_command
+  title_commands[2] = core.window_mode == "maximized" and restore_command or maximize_command
   local title_height = self.size.y
   if core.window_borderless and title_height ~= core.hit_test_title_height then
     local icon_w = style.icon_font:get_width("_")
diff --git a/src/api/system.c b/src/api/system.c
index cd6ba90f..d52453a7 100644
--- a/src/api/system.c
+++ b/src/api/system.c
@@ -117,6 +117,16 @@ top:
         rencache_invalidate();
         lua_pushstring(L, "exposed");
         return 1;
+      } else if (e.window.event == SDL_WINDOWEVENT_MINIMIZED) {
+        lua_pushstring(L, "minimized");
+        return 1;
+      } else if (e.window.event == SDL_WINDOWEVENT_MAXIMIZED) {
+        fprintf(stderr, "maximized event!\n");
+        lua_pushstring(L, "maximized");
+        return 1;
+      } else if (e.window.event == SDL_WINDOWEVENT_RESTORED) {
+        lua_pushstring(L, "restored");
+        return 1;
       }
       if (e.window.event == SDL_WINDOWEVENT_FOCUS_LOST) {
         lua_pushstring(L, "focuslost");