diff --git a/doc/classes/TabContainer.xml b/doc/classes/TabContainer.xml
index 74f258072cf6..302f9b329bb9 100644
--- a/doc/classes/TabContainer.xml
+++ b/doc/classes/TabContainer.xml
@@ -258,5 +258,8 @@
The style of the other, unselected tabs.
+
+ The style for the background fill of the [TabBar] area.
+
diff --git a/editor/editor_node.cpp b/editor/editor_node.cpp
index 6b68c4127fd6..0f2e0c8fcbfd 100644
--- a/editor/editor_node.cpp
+++ b/editor/editor_node.cpp
@@ -753,6 +753,8 @@ void EditorNode::_notification(int p_what) {
gui_base->add_theme_style_override("panel", gui_base->get_theme_stylebox(SNAME("Background"), SNAME("EditorStyles")));
scene_root_parent->add_theme_style_override("panel", gui_base->get_theme_stylebox(SNAME("Content"), SNAME("EditorStyles")));
bottom_panel->add_theme_style_override("panel", gui_base->get_theme_stylebox(SNAME("panel"), SNAME("TabContainer")));
+
+ tabbar_panel->add_theme_style_override("panel", gui_base->get_theme_stylebox(SNAME("tabbar_background"), SNAME("TabContainer")));
scene_tabs->add_theme_style_override("tab_selected", gui_base->get_theme_stylebox(SNAME("SceneTabFG"), SNAME("EditorStyles")));
scene_tabs->add_theme_style_override("tab_unselected", gui_base->get_theme_stylebox(SNAME("SceneTabBG"), SNAME("EditorStyles")));
@@ -6490,8 +6492,11 @@ EditorNode::EditorNode() {
tab_preview->set_position(Point2(2, 2) * EDSCALE);
tab_preview_panel->add_child(tab_preview);
+ tabbar_panel = memnew(PanelContainer);
+ tabbar_panel->add_theme_style_override("panel", gui_base->get_theme_stylebox(SNAME("tabbar_background"), SNAME("TabContainer")));
+ srt->add_child(tabbar_panel);
tabbar_container = memnew(HBoxContainer);
- srt->add_child(tabbar_container);
+ tabbar_panel->add_child(tabbar_container);
scene_tabs = memnew(TabBar);
scene_tabs->add_theme_style_override("tab_selected", gui_base->get_theme_stylebox(SNAME("SceneTabFG"), SNAME("EditorStyles")));
diff --git a/editor/editor_node.h b/editor/editor_node.h
index 792d2fc8791f..7e66e14ce0d6 100644
--- a/editor/editor_node.h
+++ b/editor/editor_node.h
@@ -426,6 +426,7 @@ class EditorNode : public Node {
int dock_popup_selected_idx = -1;
int dock_select_rect_over_idx = -1;
+ PanelContainer *tabbar_panel = nullptr;
HBoxContainer *tabbar_container = nullptr;
Button *distraction_free = nullptr;
Button *scene_tab_add = nullptr;
diff --git a/editor/editor_themes.cpp b/editor/editor_themes.cpp
index d20caef51c89..088239c2d901 100644
--- a/editor/editor_themes.cpp
+++ b/editor/editor_themes.cpp
@@ -656,45 +656,46 @@ Ref create_editor_theme(const Ref p_theme) {
// TabBar
- Ref style_tab_selected = style_widget->duplicate();
+ Ref style_tab_base = style_widget->duplicate();
- // Add a highlight line at the top of the selected tab.
- style_tab_selected->set_border_width_all(0);
- style_tab_selected->set_default_margin(SIDE_LEFT, widget_default_margin.x - border_width);
- style_tab_selected->set_border_width(SIDE_TOP, Math::round(2 * EDSCALE));
- // Make the highlight line prominent, but not too prominent as to not be distracting.
- Color tab_highlight = dark_color_2.lerp(accent_color, 0.75);
- style_tab_selected->set_border_color(tab_highlight);
+ style_tab_base->set_border_width_all(0);
// Don't round the top corners to avoid creating a small blank space between the tabs and the main panel.
// This also makes the top highlight look better.
- style_tab_selected->set_corner_radius_all(0);
+ style_tab_base->set_corner_detail(corner_width);
+ style_tab_base->set_corner_radius_all(0);
+ style_tab_base->set_corner_radius(CORNER_TOP_LEFT, corner_radius * EDSCALE);
+ style_tab_base->set_corner_radius(CORNER_TOP_RIGHT, corner_radius * EDSCALE);
// Prevent visible artifacts and cover the top-left rounded corner of the panel below the tab if selected
// We can't prevent them with both rounded corners and non-zero border width, though
- style_tab_selected->set_expand_margin_size(SIDE_BOTTOM, corner_width > 0 ? corner_width : border_width);
-
+ style_tab_base->set_expand_margin_size(SIDE_BOTTOM, corner_width > 0 ? corner_width : border_width);
// When using a border width greater than 0, visually line up the left of the selected tab with the underlying panel.
- style_tab_selected->set_expand_margin_size(SIDE_LEFT, -border_width);
+ style_tab_base->set_expand_margin_size(SIDE_LEFT, -border_width);
+
+ style_tab_base->set_default_margin(SIDE_LEFT, widget_default_margin.x + 5 * EDSCALE);
+ style_tab_base->set_default_margin(SIDE_RIGHT, widget_default_margin.x + 5 * EDSCALE);
+ style_tab_base->set_default_margin(SIDE_BOTTOM, widget_default_margin.y);
+ style_tab_base->set_default_margin(SIDE_TOP, widget_default_margin.y);
+
+ Ref style_tab_selected = style_tab_base->duplicate();
- style_tab_selected->set_default_margin(SIDE_LEFT, widget_default_margin.x + 2 * EDSCALE);
- style_tab_selected->set_default_margin(SIDE_RIGHT, widget_default_margin.x + 2 * EDSCALE);
- style_tab_selected->set_default_margin(SIDE_BOTTOM, widget_default_margin.y);
- style_tab_selected->set_default_margin(SIDE_TOP, widget_default_margin.y);
style_tab_selected->set_bg_color(base_color);
+ // Add a highlight line at the top of the selected tab.
+ style_tab_selected->set_border_width(SIDE_TOP, Math::round(2 * EDSCALE));
+ // Make the highlight line prominent, but not too prominent as to not be distracting.
+ Color tab_highlight = dark_color_2.lerp(accent_color, 0.75);
+ style_tab_selected->set_border_color(tab_highlight);
+ style_tab_selected->set_corner_radius_all(0);
- Ref style_tab_unselected = style_tab_selected->duplicate();
- style_tab_unselected->set_bg_color(dark_color_1);
+ Ref style_tab_unselected = style_tab_base->duplicate();
style_tab_unselected->set_expand_margin_size(SIDE_BOTTOM, 0);
+ style_tab_unselected->set_bg_color(dark_color_1);
// Add some spacing between unselected tabs to make them easier to distinguish from each other
style_tab_unselected->set_border_color(Color(0, 0, 0, 0));
- style_tab_unselected->set_border_width(SIDE_LEFT, Math::round(1 * EDSCALE));
- style_tab_unselected->set_border_width(SIDE_RIGHT, Math::round(1 * EDSCALE));
- style_tab_unselected->set_default_margin(SIDE_LEFT, widget_default_margin.x + 2 * EDSCALE);
- style_tab_unselected->set_default_margin(SIDE_RIGHT, widget_default_margin.x + 2 * EDSCALE);
- Ref style_tab_disabled = style_tab_selected->duplicate();
- style_tab_disabled->set_bg_color(disabled_bg_color);
+ Ref style_tab_disabled = style_tab_base->duplicate();
style_tab_disabled->set_expand_margin_size(SIDE_BOTTOM, 0);
+ style_tab_disabled->set_bg_color(disabled_bg_color);
style_tab_disabled->set_border_color(disabled_bg_color);
// Editor background
@@ -1199,6 +1200,13 @@ Ref create_editor_theme(const Ref p_theme) {
theme->set_constant("line_separation", "ItemList", 3 * EDSCALE);
// TabBar & TabContainer
+ Ref style_tabbar_background = make_flat_stylebox(dark_color_1, 0, 0, 0, 0);
+ style_tabbar_background->set_expand_margin_size(SIDE_BOTTOM, corner_width > 0 ? corner_width : border_width);
+ style_tabbar_background->set_corner_detail(corner_width);
+ style_tabbar_background->set_corner_radius(CORNER_TOP_LEFT, corner_radius * EDSCALE);
+ style_tabbar_background->set_corner_radius(CORNER_TOP_RIGHT, corner_radius * EDSCALE);
+ theme->set_stylebox("tabbar_background", "TabContainer", style_tabbar_background);
+
theme->set_stylebox("tab_selected", "TabContainer", style_tab_selected);
theme->set_stylebox("tab_unselected", "TabContainer", style_tab_unselected);
theme->set_stylebox("tab_disabled", "TabContainer", style_tab_disabled);
@@ -1234,14 +1242,14 @@ Ref create_editor_theme(const Ref p_theme) {
Ref style_content_panel = style_default->duplicate();
style_content_panel->set_border_color(dark_color_3);
style_content_panel->set_border_width_all(border_width);
+ style_content_panel->set_border_width(Side::SIDE_TOP, 0);
+ style_content_panel->set_corner_radius(CORNER_TOP_LEFT, 0);
+ style_content_panel->set_corner_radius(CORNER_TOP_RIGHT, 0);
// compensate the border
style_content_panel->set_default_margin(SIDE_TOP, (2 + margin_size_extra) * EDSCALE);
style_content_panel->set_default_margin(SIDE_RIGHT, margin_size_extra * EDSCALE);
style_content_panel->set_default_margin(SIDE_BOTTOM, margin_size_extra * EDSCALE);
style_content_panel->set_default_margin(SIDE_LEFT, margin_size_extra * EDSCALE);
- // Display border to visually split the body of the container from its possible backgrounds.
- style_content_panel->set_border_width(Side::SIDE_TOP, Math::round(2 * EDSCALE));
- style_content_panel->set_border_color(dark_color_2);
theme->set_stylebox("panel", "TabContainer", style_content_panel);
// TabContainerOdd can be used on tabs against the base color background (e.g. nested tabs).
diff --git a/scene/gui/tab_container.cpp b/scene/gui/tab_container.cpp
index 861a3050cb06..3e04ebee6a9f 100644
--- a/scene/gui/tab_container.cpp
+++ b/scene/gui/tab_container.cpp
@@ -163,6 +163,10 @@ void TabContainer::_notification(int p_what) {
int header_height = _get_top_margin();
+ // Draw background for the tabbar.
+ Ref tabbar_background = get_theme_stylebox(SNAME("tabbar_background"));
+ tabbar_background->draw(canvas, Rect2(0, 0, size.width, header_height));
+ // Draw the background for the tab's content.
panel->draw(canvas, Rect2(0, header_height, size.width, size.height - header_height));
// Draw the popup menu.
diff --git a/scene/resources/default_theme/default_theme.cpp b/scene/resources/default_theme/default_theme.cpp
index 410f35e5979b..73ad1ceff753 100644
--- a/scene/resources/default_theme/default_theme.cpp
+++ b/scene/resources/default_theme/default_theme.cpp
@@ -831,6 +831,7 @@ void fill_default_theme(Ref &theme, const Ref &default_font, const
theme->set_stylebox("tab_unselected", "TabContainer", style_tab_unselected);
theme->set_stylebox("tab_disabled", "TabContainer", style_tab_disabled);
theme->set_stylebox("panel", "TabContainer", make_flat_stylebox(style_normal_color, 0, 0, 0, 0));
+ theme->set_stylebox("tabbar_background", "TabContainer", make_empty_stylebox(0, 0, 0, 0));
theme->set_icon("increment", "TabContainer", icons["scroll_button_right"]);
theme->set_icon("increment_highlight", "TabContainer", icons["scroll_button_right_hl"]);