From 5921e31c45e2d0b2b2ee4e03b21127abb3c30944 Mon Sep 17 00:00:00 2001
From: Po Lu <luangruo@yahoo.com>
Date: Mon, 9 May 2022 11:10:13 +0000
Subject: Respect display scale factor drawing underwaves on Haiku

* src/haikuterm.c (haiku_get_scale_factor): New function.
(haiku_draw_underwave): Apply said factor.
---
 src/haikuterm.c | 29 ++++++++++++++++++++++++++---
 1 file changed, 26 insertions(+), 3 deletions(-)

(limited to 'src/haikuterm.c')

diff --git a/src/haikuterm.c b/src/haikuterm.c
index 265d3fbf5e6..bfa6be225ac 100644
--- a/src/haikuterm.c
+++ b/src/haikuterm.c
@@ -723,22 +723,41 @@ haiku_draw_relief_rect (struct glyph_string *s,
     BView_EndClip (view);
 }
 
+static void
+haiku_get_scale_factor (int *scale_x, int *scale_y)
+{
+  struct haiku_display_info *dpyinfo = x_display_list;
+
+  if (dpyinfo->resx > 96)
+    *scale_x = floor (dpyinfo->resx / 96);
+  if (dpyinfo->resy > 96)
+    *scale_y = floor (dpyinfo->resy / 96);
+}
+
 static void
 haiku_draw_underwave (struct glyph_string *s, int width, int x)
 {
-  int wave_height = 3, wave_length = 2;
-  int y, dx, dy, odd, xmax;
+  int wave_height, wave_length;
+  int y, dx, dy, odd, xmax, scale_x, scale_y;
   float ax, ay, bx, by;
-  void *view = FRAME_HAIKU_VIEW (s->f);
+  void *view;
+
+  scale_x = 4;
+  scale_y = 4;
+  haiku_get_scale_factor (&scale_x, &scale_y);
+  wave_height = 3 * scale_y;
+  wave_length = 2 * scale_x;
 
   dx = wave_length;
   dy = wave_height - 1;
   y = s->ybase - wave_height + 3;
   xmax = x + width;
+  view = FRAME_HAIKU_VIEW (s->f);
 
   BView_StartClip (view);
   haiku_clip_to_string (s);
   BView_ClipToRect (view, x, y, width, wave_height);
+
   ax = x - ((int) (x) % dx) + (float) 0.5;
   bx = ax + dx;
   odd = (int) (ax / dx) % 2;
@@ -749,6 +768,8 @@ haiku_draw_underwave (struct glyph_string *s, int width, int x)
   else
     by += dy;
 
+  BView_SetPenSize (view, scale_y);
+
   while (ax <= xmax)
     {
       BView_StrokeLine (view, ax, ay, bx, by);
@@ -756,6 +777,8 @@ haiku_draw_underwave (struct glyph_string *s, int width, int x)
       bx += dx, by = y + 0.5 + odd * dy;
       odd = !odd;
     }
+
+  BView_SetPenSize (view, 1);
   BView_EndClip (view);
 }
 
-- 
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