From 31e3405cdf03d2aa64f807cad92e8293a51b0c2f Mon Sep 17 00:00:00 2001
From: Jonas Kümmerlin <jonas@kuemmerlin.eu>
Date: Fri, 28 Dec 2018 22:23:26 +0100
Subject: use ALF_WM_UPDATEFONTS and more layout update corrections

---
 alf/alf.cpp   | 23 +++++++++++++++++------
 alf/alfpriv.h |  2 ++
 2 files changed, 19 insertions(+), 6 deletions(-)

diff --git a/alf/alf.cpp b/alf/alf.cpp
index e71e3a1..c83ac4a 100644
--- a/alf/alf.cpp
+++ b/alf/alf.cpp
@@ -49,8 +49,12 @@ ALF_UpdateFontForWidget(ALFWindowPriv *priv, ALFWidgetPriv *widget)
 void
 ALF_UpdateFonts(HWND win)
 {
-    ALFWindowPriv *priv = (ALFWindowPriv*)GetWindowLongPtr(win, 0);
+    SendMessage(win, ALF_WM_UPDATEFONTS, 0, 0);
+}
 
+void
+ALF_UpdateFontsPriv(HWND win, ALFWindowPriv *priv)
+{
     priv->fonts.dpi = priv->app->compatFn->GetDpiForWindow(win);
 
     NONCLIENTMETRICS ncm;
@@ -347,6 +351,11 @@ ALF_DefWindowProc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
         return (LRESULT)priv->app;
     }
 
+    if (msg == ALF_WM_UPDATEFONTS) {
+        ALF_UpdateFontsPriv(hwnd, priv);
+        return 0;
+    }
+
     if (msg == WM_ACTIVATE) {
         if (!HIWORD(wparam)) { // if !minimized
             if (LOWORD(wparam)) {
@@ -391,8 +400,9 @@ ALF_DefWindowProc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
         if (!alwaysUnderline) {
             SendMessage(hwnd, WM_UPDATEUISTATE, MAKEWPARAM(UIS_INITIALIZE, 0), 0);
         }
-        ALF_UpdateFonts(hwnd);
-        ALF_RecalculateLayout(hwnd);
+        ALF_UpdateFontsPriv(hwnd, priv);
+        ALF_CalculateSizes(priv);
+        ALF_ApplyLayout(hwnd, priv);
     }
 
     if (msg == WM_DESTROY && priv->vtbl->destroy) {
@@ -413,15 +423,16 @@ ALF_DefWindowProc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
     }
 
     if (msg == WM_DPICHANGED) {
-        ALF_UpdateFonts(hwnd);
+        ALF_UpdateFontsPriv(hwnd, priv);
         ALF_CalculateSizes(priv);
         RECT *r = (RECT*)lparam;
         SetWindowPos(hwnd, NULL, r->left, r->top, r->right-r->left, r->bottom-r->top, SWP_NOACTIVATE|SWP_NOZORDER);
     }
 
     if (msg == WM_THEMECHANGED || msg == WM_SETTINGCHANGE) {
-        ALF_UpdateFonts(hwnd);
-        ALF_RecalculateLayout(hwnd);
+        ALF_UpdateFontsPriv(hwnd, priv);
+        ALF_CalculateSizes(priv);
+        ALF_ApplyLayout(hwnd, priv);
     }
 
     if (msg == DM_GETDEFID) {
diff --git a/alf/alfpriv.h b/alf/alfpriv.h
index 14c529a..5affe15 100644
--- a/alf/alfpriv.h
+++ b/alf/alfpriv.h
@@ -66,3 +66,5 @@ struct ALFAppPriv {
 ALFCompatFunctions *
 ALF_CreateCompatFuncTable(void);
 
+void
+ALF_UpdateFontsPriv(HWND hwnd, ALFWindowPriv *priv);
-- 
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