[gtk/wip/baedert/for-master: 35/58] renderborder: Make simple border case more obvious

[Timm Bäder <baedert src gnome org>]

commit dff29840e4e196548e2672d599801f20895be308
Author: Timm Bäder <mail baedert org>
Date:   Wed Jan 29 10:40:10 2020 +0100

    renderborder: Make simple border case more obvious
    
    When reaching this point, it is impossible that all border styles are
    HIDDEN or NONE, but up to 3 of them can still be that style. In any
    case, the "none or solid" border style is the most common on there is,
    so try to make this simpler here by just appending a border node
    directly instead of going through the snapshot_border path.

 gtk/gtkrenderborder.c | 26 ++++++++++++++++++++------
 1 file changed, 20 insertions(+), 6 deletions(-)
---
diff --git a/gtk/gtkrenderborder.c b/gtk/gtkrenderborder.c
index b574002203..78a2cacea7 100644
--- a/gtk/gtkrenderborder.c
+++ b/gtk/gtkrenderborder.c
@@ -709,12 +709,26 @@ gtk_css_style_snapshot_border (GtkCssBoxes *boxes,
       border_width[3] = _gtk_css_number_value_get (border->border_left_width, 100);
 
       gtk_snapshot_push_debug (snapshot, "CSS border");
-      snapshot_border (snapshot,
-                       gtk_css_boxes_get_border_box (boxes),
-                       border_width,
-                       colors,
-                       border_style);
-      gtk_snapshot_pop (snapshot);
+      if (border_style[0] <= GTK_BORDER_STYLE_SOLID &&
+          border_style[1] <= GTK_BORDER_STYLE_SOLID &&
+          border_style[2] <= GTK_BORDER_STYLE_SOLID &&
+          border_style[3] <= GTK_BORDER_STYLE_SOLID)
+        {
+          /* The most common case of a solid border */
+          gtk_snapshot_append_border (snapshot,
+                                      gtk_css_boxes_get_border_box (boxes),
+                                      border_width,
+                                      colors);
+        }
+      else
+        {
+          snapshot_border (snapshot,
+                           gtk_css_boxes_get_border_box (boxes),
+                           border_width,
+                           colors,
+                           border_style);
+        }
+       gtk_snapshot_pop (snapshot);
     }
 }