- Add dockBuilderGetNode, dockBuilderGetCentralNode

- Backport ocornut/imgui@a63220e

Author: kcbanner

libs/imgui/imgui.cpp

@@ -19572,6 +19572,8 @@ ImGuiID ImGui::DockSpaceOverViewport(ImGuiID dockspace_id, const ImGuiViewport*
     host_window_flags |= ImGuiWindowFlags_NoBringToFrontOnFocus | ImGuiWindowFlags_NoNavFocus;
     if (dockspace_flags & ImGuiDockNodeFlags_PassthruCentralNode)
         host_window_flags |= ImGuiWindowFlags_NoBackground;
+    if (dockspace_flags & ImGuiDockNodeFlags_KeepAliveOnly)
+        host_window_flags |= ImGuiWindowFlags_NoMouseInputs;
 
     // FIXME-OPT: When using ImGuiDockNodeFlags_KeepAliveOnly with DockSpaceOverViewport() we might be able to spare submitting the window,
     // since DockSpace() with that flag doesn't need a window. We'd only need to compute the default ID accordingly.

src/gui.zig

@@ -975,9 +975,17 @@ pub const DockSpaceOverViewport = zguiDockSpaceOverViewport;
 // DockBuilder (Unstable internal imgui API, subject to change, use at own risk)
 //
 //--------------------------------------------------------------------------------------------------
+const DockNode = anyopaque;
+pub fn dockNodeRect(node: *const DockNode, out_rect: *[4]f32) void {
+    return zguiDockNodeRect(node, out_rect);
+}
+extern fn zguiDockNodeRect(node: *const DockNode, out_rect: *[4]f32) void;
+
 pub fn dockBuilderDockWindow(window_name: [:0]const u8, node_id: Ident) void {
     zguiDockBuilderDockWindow(window_name.ptr, node_id);
 }
+pub const dockBuilderGetNode = zguiDockBuilderGetNode;
+pub const dockBuilderGetCentralNode = zguiDockBuilderGetCentralNode;
 pub const dockBuilderAddNode = zguiDockBuilderAddNode;
 pub const dockBuilderRemoveNode = zguiDockBuilderRemoveNode;
 pub fn dockBuilderSetNodePos(node_id: Ident, pos: [2]f32) void {
@@ -990,6 +998,8 @@ pub const dockBuilderSplitNode = zguiDockBuilderSplitNode;
 pub const dockBuilderFinish = zguiDockBuilderFinish;
 
 extern fn zguiDockBuilderDockWindow(window_name: [*:0]const u8, node_id: Ident) void;
+extern fn zguiDockBuilderGetNode(node_id: Ident) ?*DockNode;
+extern fn zguiDockBuilderGetCentralNode(node_id: Ident) ?*DockNode;
 extern fn zguiDockBuilderAddNode(node_id: Ident, flags: DockNodeFlags) Ident;
 extern fn zguiDockBuilderRemoveNode(node_id: Ident) void;
 extern fn zguiDockBuilderSetNodePos(node_id: Ident, pos: *const [2]f32) void;

src/zgui.cpp

@@ -2784,11 +2784,26 @@ extern "C"
     // DockBuilder (Unstable internal imgui API, subject to change, use at own risk)
     //
     //--------------------------------------------------------------------------------------------------
+    ZGUI_API void zguiDockNodeRect(const ImGuiDockNode* node, ImRect* out_rect)
+    {
+        *out_rect = node->Rect();
+    }
+
     ZGUI_API void zguiDockBuilderDockWindow(const char *window_name, ImGuiID node_id)
     {
         ImGui::DockBuilderDockWindow(window_name, node_id);
     }
 
+    ZGUI_API ImGuiDockNode* zguiDockBuilderGetNode(ImGuiID node_id)
+    {
+        return ImGui::DockBuilderGetNode(node_id);
+    }
+
+    ZGUI_API ImGuiDockNode* zguiDockBuilderGetCentralNode(ImGuiID node_id)
+    {
+        return ImGui::DockBuilderGetCentralNode(node_id);
+    }
+
     ZGUI_API ImGuiID zguiDockBuilderAddNode(ImGuiID node_id, ImGuiDockNodeFlags flags)
     {
         return ImGui::DockBuilderAddNode(node_id, flags);