From 8c0765a1b6739f8f41eecb897d9e6ce8ec7bbe3a Mon Sep 17 00:00:00 2001
From: Paul Dicker <paul@pitdicker.nl>
Date: Wed, 2 Apr 2025 14:05:39 +0200
Subject: [PATCH] Draw ecc capacity threshold line with cairo

---
 src/rs01-window.c | 11 +++++++----
 src/rs02-window.c | 11 +++++++----
 src/rs03-window.c | 11 +++++++----
 3 files changed, 21 insertions(+), 12 deletions(-)

diff --git a/src/rs01-window.c b/src/rs01-window.c
index 52a75e0..3461c11 100644
--- a/src/rs01-window.c
+++ b/src/rs01-window.c
@@ -268,10 +268,13 @@ static void redraw_curve(RS01Widgets *wl)
    /* Ecc capacity threshold line */
 
    y = GuiCurveY(wl->fixCurve, wl->eccBytes);  
-   gdk_gc_set_rgb_fg_color(Closure->drawGC, Closure->greenSector);
-   gdk_draw_line(gtk_widget_get_window(wl->fixCurve->widget),
-		 Closure->drawGC,
-		 wl->fixCurve->leftX-6, y, wl->fixCurve->rightX+6, y);
+
+   cairo_t *cr = gdk_cairo_create(gtk_widget_get_window(wl->fixCurve->widget));
+   gdk_cairo_set_source_color(cr, Closure->greenSector);
+   cairo_set_line_width(cr, 1.0);
+   cairo_move_to(cr, wl->fixCurve->leftX-5.5, y+0.5);
+   cairo_line_to(cr, wl->fixCurve->rightX+5.5, y+0.5);
+   cairo_stroke(cr);
 }
 
 /*
diff --git a/src/rs02-window.c b/src/rs02-window.c
index 8c3e765..d23267a 100644
--- a/src/rs02-window.c
+++ b/src/rs02-window.c
@@ -208,10 +208,13 @@ static void redraw_curve(RS02Widgets *wl)
    /* Ecc capacity threshold line */
 
    y = GuiCurveY(wl->fixCurve, wl->eccBytes);  
-   gdk_gc_set_rgb_fg_color(Closure->drawGC, Closure->greenSector);
-   gdk_draw_line(wl->fixCurve->widget->window,
-		 Closure->drawGC,
-		 wl->fixCurve->leftX-6, y, wl->fixCurve->rightX+6, y);
+
+   cairo_t *cr = gdk_cairo_create(gtk_widget_get_window(wl->fixCurve->widget));
+   gdk_cairo_set_source_color(cr, Closure->greenSector);
+   cairo_set_line_width(cr, 1.0);
+   cairo_move_to(cr, wl->fixCurve->leftX-5.5, y+0.5);
+   cairo_line_to(cr, wl->fixCurve->rightX+5.5, y+0.5);
+   cairo_stroke(cr);
 }
 
 /*
diff --git a/src/rs03-window.c b/src/rs03-window.c
index 1e8e982..ad5a549 100644
--- a/src/rs03-window.c
+++ b/src/rs03-window.c
@@ -238,10 +238,13 @@ static void redraw_curve(RS03Widgets *wl)
    /* Ecc capacity threshold line */
 
    y = GuiCurveY(wl->fixCurve, wl->eccBytes);  
-   gdk_gc_set_rgb_fg_color(Closure->drawGC, Closure->greenSector);
-   gdk_draw_line(gtk_widget_get_window(wl->fixCurve->widget),
-		 Closure->drawGC,
-		 wl->fixCurve->leftX-6, y, wl->fixCurve->rightX+6, y);
+
+   cairo_t *cr = gdk_cairo_create(gtk_widget_get_window(wl->fixCurve->widget));
+   gdk_cairo_set_source_color(cr, Closure->greenSector);
+   cairo_set_line_width(cr, 1.0);
+   cairo_move_to(cr, wl->fixCurve->leftX-5.5, y+0.5);
+   cairo_line_to(cr, wl->fixCurve->rightX+5.5, y+0.5);
+   cairo_stroke(cr);
 }
 
 /*