From 80fca449a43d8a5f3095ee6db6211a37bbc48036 Mon Sep 17 00:00:00 2001
From: Alx Sa <cmyk.student@gmail.com>
Date: Sun, 25 Feb 2024 03:14:28 +0000
Subject: [PATCH] widgets: Use theme colors of palette...

..background rendering. As with the
previous commit, this patch tries to
retrieve the background color and color
properties of the widget, then use them
to draw the background and grid of the
Palette and Colormap dockables.
---
 app/widgets/gimpviewrendererpalette.c | 52 +++++++++++++++++++++++++--
 1 file changed, 50 insertions(+), 2 deletions(-)

diff --git a/app/widgets/gimpviewrendererpalette.c b/app/widgets/gimpviewrendererpalette.c
index 65adf19393..b6510fe039 100644
--- a/app/widgets/gimpviewrendererpalette.c
+++ b/app/widgets/gimpviewrendererpalette.c
@@ -83,6 +83,11 @@ gimp_view_renderer_palette_render (GimpViewRenderer *renderer,
   GimpViewRendererPalette *renderpal = GIMP_VIEW_RENDERER_PALETTE (renderer);
   GimpPalette             *palette;
   GimpColorTransform      *transform;
+  GtkStyleContext         *style;
+  GdkRGBA                 *bg_color = NULL;
+  GdkRGBA                 *fg_color = NULL;
+  guchar                   bg_rgb[3];
+  guchar                   fg_rgb[3];
   guchar                  *row;
   guchar                  *dest;
   GList                   *list;
@@ -96,6 +101,39 @@ gimp_view_renderer_palette_render (GimpViewRenderer *renderer,
   if (gimp_palette_get_n_colors (palette) == 0)
     return;
 
+  /* Get background colors from context */
+  style = gtk_widget_get_style_context (widget);
+  gtk_style_context_get (style, gtk_style_context_get_state (style),
+                         GTK_STYLE_PROPERTY_COLOR,            &fg_color,
+                         GTK_STYLE_PROPERTY_BACKGROUND_COLOR, &bg_color,
+                         NULL);
+
+  if (fg_color)
+    {
+      fg_rgb[0] = (gint) (fg_color->red * 255);
+      fg_rgb[1] = (gint) (fg_color->green * 255);
+      fg_rgb[2] = (gint) (fg_color->blue * 255);
+
+      gdk_rgba_free (fg_color);
+    }
+  else
+    {
+      fg_rgb[0] = fg_rgb[1] = fg_rgb[2] = 0;
+    }
+
+  if (bg_color)
+    {
+      bg_rgb[0] = (gint) (bg_color->red * 255);
+      bg_rgb[1] = (gint) (bg_color->green * 255);
+      bg_rgb[2] = (gint) (bg_color->blue * 255);
+
+      gdk_rgba_free (bg_color);
+    }
+  else
+    {
+      bg_rgb[0] = bg_rgb[1] = bg_rgb[2] = 255;
+    }
+
   grid_width = renderpal->draw_grid ? 1 : 0;
 
   if (renderpal->cell_size > 0)
@@ -185,13 +223,23 @@ gimp_view_renderer_palette_render (GimpViewRenderer *renderer,
                     }
                   else
                     {
-                      rgb[0] = rgb[1] = rgb[2] = (renderpal->draw_grid ? 0 : 255);
+                      if (renderpal->draw_grid)
+                        {
+                          for (gint i = 0; i < 3; i++)
+                            rgb[i] = fg_rgb[i];
+                        }
+                      else
+                        {
+                          for (gint i = 0; i < 3; i++)
+                            rgb[i] = bg_rgb[i];
+                        }
                     }
                 }
 
               if (renderpal->draw_grid && (x % renderpal->cell_width) == 0)
                 {
-                  GIMP_CAIRO_RGB24_SET_PIXEL (d, 0, 0, 0);
+                  GIMP_CAIRO_RGB24_SET_PIXEL (d, fg_rgb[0], fg_rgb[1],
+                                              fg_rgb[2]);
                 }
               else
                 {