From: Bram Moolenaar <Bram@vim.org>
Date: Tue, 7 May 2019 20:52:50 +0000 (+0200)
Subject: patch 8.1.1294: MS-Windows: Some fonts return wrong average char width
X-Git-Tag: v8.1.1294
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=93d77b2cbec08518ee426d0c44c50cf505732443;p=vim

patch 8.1.1294: MS-Windows: Some fonts return wrong average char width

Problem:    MS-Windows: Some fonts return wrong average char width.
Solution:   Compute the average ourselves. (Ken Takata, closes #4356)
---

diff --git a/src/gui_w32.c b/src/gui_w32.c
index 3914733d7..7bea58e97 100644
--- a/src/gui_w32.c
+++ b/src/gui_w32.c
@@ -1455,10 +1455,16 @@ GetFontSize(GuiFont font)
     HWND    hwnd = GetDesktopWindow();
     HDC	    hdc = GetWindowDC(hwnd);
     HFONT   hfntOld = SelectFont(hdc, (HFONT)font);
+    SIZE    size;
     TEXTMETRIC tm;
 
     GetTextMetrics(hdc, &tm);
-    gui.char_width = tm.tmAveCharWidth + tm.tmOverhang;
+    // GetTextMetrics() may not return the right value in tmAveCharWidth
+    // for some fonts.  Do our own average computation.
+    GetTextExtentPoint(hdc,
+	    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz",
+	    52, &size);
+    gui.char_width = (size.cx / 26 + 1) / 2 + tm.tmOverhang;
 
     gui.char_height = tm.tmHeight + p_linespace;
 
diff --git a/src/version.c b/src/version.c
index 21292fe26..06a7a5f68 100644
--- a/src/version.c
+++ b/src/version.c
@@ -767,6 +767,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1294,
 /**/
     1293,
 /**/