From 7dcfd1a840ac87f9f4306eaf08fc5f45f9e76c84 Mon Sep 17 00:00:00 2001
From: Andreas Tennert <mail@andreas-tennert.de>
Date: Sat, 20 Feb 2021 17:51:08 +0100
Subject: [PATCH] #4 fix: fix layout update on size change

---
 CHANGELOG                                     |  1 +
 .../atennert/lcarsde/statusbar/StatusBar.kt   | 19 ++++++++++++-------
 2 files changed, 13 insertions(+), 7 deletions(-)

diff --git a/CHANGELOG b/CHANGELOG
index f934e80..f902ce7 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,5 +1,6 @@
 21.2
 * add linking for systems with /usr/lib64 instead of /usr/lib
+* fix issue where the app is not redrawn on size changes
 
 21.1
 * rewrite in Kotlin
diff --git a/src/nativeMain/kotlin/de/atennert/lcarsde/statusbar/StatusBar.kt b/src/nativeMain/kotlin/de/atennert/lcarsde/statusbar/StatusBar.kt
index 0466b29..af0a09b 100644
--- a/src/nativeMain/kotlin/de/atennert/lcarsde/statusbar/StatusBar.kt
+++ b/src/nativeMain/kotlin/de/atennert/lcarsde/statusbar/StatusBar.kt
@@ -21,7 +21,8 @@ class StatusBar {
         window.setStyling(cssProvider, "window")
 
         gSignalConnect(window, "realize", staticCFunction { w: CPointer<GtkWidget>? -> create(w) })
-        gSignalConnect(window, "size-allocate", staticCFunction { w: CPointer<GtkWidget>? -> sizeAdjust(w) })
+        gSignalConnect(window, "configure-event",
+            staticCFunction { w: CPointer<GtkWidget>?, e: CPointer<GdkEvent>? -> configure(w, e) })
 
         gtk_grid_set_column_spacing(grid.reinterpret(), GAP_SIZE.convert())
         gtk_grid_set_row_spacing(grid.reinterpret(), GAP_SIZE.convert())
@@ -48,16 +49,20 @@ class StatusBar {
          */
         private fun create(widget: CPointer<GtkWidget>?) {
             val gdkWindow = gtk_widget_get_window(widget)
+            gdk_window_set_events(gdkWindow, GDK_STRUCTURE_MASK)
             gdk_x11_window_set_utf8_property(gdkWindow, LCARSDE_STATUS_BAR, LCARSDE_STATUS_BAR)
         }
 
-        private fun sizeAdjust(widget: CPointer<GtkWidget>?) {
-            val allocation = nativeHeap.alloc<GtkAllocation>()
-            gtk_widget_get_allocation(widget, allocation.ptr)
-            if (allocation.width != currentWidth) {
-                currentWidth = allocation.width
+        private fun configure(widget: CPointer<GtkWidget>?, event: CPointer<GdkEvent>?) {
+            val configureData = event?.pointed?.configure
+            if (configureData != null) {
+                gtk_widget_set_size_request(widget, configureData.width, configureData.height)
 
-                updateLayout()
+                if (configureData.width != currentWidth) {
+                    currentWidth = configureData.width
+
+                    updateLayout()
+                }
             }
         }