From f51e05e400097b60fc360a4b46518944d0943e8e Mon Sep 17 00:00:00 2001
From: "Chris.Elston" <chris.elston@blueyonder.co.uk>
Date: Thu, 14 Jan 2021 12:25:56 +0000
Subject: [PATCH] improve styling of module section expander button

---
 data/themes/darktable.css | 19 +++++++++++++++++++
 src/iop/temperature.c     |  2 ++
 src/libs/import.c         |  2 ++
 3 files changed, 23 insertions(+)

diff --git a/data/themes/darktable.css b/data/themes/darktable.css
index 785d8f0234ea..d1f924b7ee7b 100644
--- a/data/themes/darktable.css
+++ b/data/themes/darktable.css
@@ -695,6 +695,25 @@ overshoot.right
   margin: 2px 0 6px 0;
 }
 
+/* Control sections that can be expanded/collapsed need to be handled differently */
+
+#iop-plugin-ui .section-expander #section_label,
+#lib-plugin-ui .section-expander #section_label
+{
+  margin: 0;
+}
+
+#lib-plugin-ui .section-expander,
+#iop-plugin-ui .section-expander {
+  padding: 12px 0 6px 0;
+}
+
+#lib-plugin-ui .section-expander #control-button,
+#iop-plugin-ui .section-expander #control-button {
+  padding: 0;
+  margin: 0;
+}
+
 /* Special modules: image infos, navigation and search ones */
 #image-info
 {
diff --git a/src/iop/temperature.c b/src/iop/temperature.c
index d6a8c1cefbab..862bef8f2901 100644
--- a/src/iop/temperature.c
+++ b/src/iop/temperature.c
@@ -2005,6 +2005,8 @@ void gui_init(struct dt_iop_module_t *self)
   GtkWidget *destdisp_head = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, DT_BAUHAUS_SPACE);
   GtkWidget *header_evb = gtk_event_box_new();
   GtkWidget *destdisp = dt_ui_section_label_new(_("channel coefficients"));
+  context = gtk_widget_get_style_context(destdisp_head);
+  gtk_style_context_add_class(context, "section-expander");
   gtk_container_add(GTK_CONTAINER(header_evb), destdisp);
 
   g->coeffs_toggle = dtgtk_togglebutton_new(dtgtk_cairo_paint_solid_arrow, CPF_STYLE_BOX | CPF_DIRECTION_LEFT, NULL);
diff --git a/src/libs/import.c b/src/libs/import.c
index a37b10f198c7..0b8bb546063b 100644
--- a/src/libs/import.c
+++ b/src/libs/import.c
@@ -748,6 +748,8 @@ void gui_init(dt_lib_module_t *self)
   // collapsible section
   GtkWidget *destdisp_head = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 0);
   GtkWidget *header_evb = gtk_event_box_new();
+  GtkStyleContext *context = gtk_widget_get_style_context(destdisp_head);
+  gtk_style_context_add_class(context, "section-expander");
   GtkWidget *destdisp = dt_ui_section_label_new(_("parameters"));
   gtk_container_add(GTK_CONTAINER(header_evb), destdisp);