ImGui center docking

[tame trout]

Hey! I'm trying to have a window docked to the center of the screen, but I cannot figure out how to do it properly. I'd like for the "Center" window to take up all the remaining space. I cannot even resize it manually by dragging the window corners, it refuses to go beyond that point. The gap marked with red should be taken up by the "Center" window.

[split basalt]

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[tame trout]

void DockspaceBuild( ImGuiID dockspaceID, bool& bDockspaceBuilt )
{
    bDockspaceBuilt = true;
    ImGuiViewport* pViewport = ImGui::GetMainViewport();

    ImGui::DockBuilderRemoveNode( dockspaceID );
    ImGui::DockBuilderAddNode( dockspaceID, ImGuiDockNodeFlags_DockSpace );
    ImGui::DockBuilderSetNodeSize( dockspaceID, pViewport->Size );

    ImGuiID dock_id_main = dockspaceID;
    ImGuiID dock_id_top = ImGui::DockBuilderSplitNode( dockspaceID, ImGuiDir_Up, 0.15f, NULL, &dock_id_main );
    ImGuiID dock_id_left = ImGui::DockBuilderSplitNode( dock_id_main, ImGuiDir_Left, 0.15f, NULL, &dock_id_main );
    ImGuiID dock_id_right = ImGui::DockBuilderSplitNode( dock_id_main, ImGuiDir_Right, 0.25f, NULL, &dock_id_main );
    ImGuiID dock_id_rightBottom = ImGui::DockBuilderSplitNode( dock_id_right, ImGuiDir_Down, 0.20f, NULL, &dock_id_right );
    ImGuiID dock_id_bottom = ImGui::DockBuilderSplitNode( dock_id_main, ImGuiDir_Down, 0.25f, NULL, &dock_id_main );
    ImGuiID dock_id_bottomC = ImGui::DockBuilderSplitNode( dock_id_bottom, ImGuiDir_Down, 0.45f, NULL, &dock_id_bottom );
    ImGuiID dock_id_center = ImGui::DockBuilderSplitNode( dock_id_main, ImGuiDir_Down, 1.0f, NULL, &dock_id_main );

    ImGui::DockBuilderDockWindow( "Top", dock_id_top );
    ImGui::DockBuilderDockWindow( "Left", dock_id_left );
    ImGui::DockBuilderDockWindow( "Right", dock_id_right );
    ImGui::DockBuilderDockWindow( "Bottom Right", dock_id_rightBottom );
    ImGui::DockBuilderDockWindow( "Bottom", dock_id_bottom );
    ImGui::DockBuilderDockWindow( "Console", dock_id_bottomC );
    ImGui::DockBuilderDockWindow( "Center", dock_id_center );

    ImGui::DockBuilderFinish( dockspaceID );
}

void DockspaceDraw()
{
    static ImGuiID dockspaceID = 0;
    static bool bDockSpaceBuilt = false;
    ImGuiWindowFlags windowFlags = 0;
    windowFlags |= ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoMove;
    windowFlags |= ImGuiWindowFlags_NoBringToFrontOnFocus | ImGuiWindowFlags_NoNavFocus | ImGuiWindowFlags_NoResize;

    dockspaceID = ImGui::GetID( "MyDockspace" );
    ImGuiViewport* pViewport = ImGui::GetMainViewport();
    ImGui::SetNextWindowPos( pViewport->Pos );
    ImGui::SetNextWindowSize( pViewport->Size );
    ImGui::SetNextWindowViewport( pViewport->ID );

    if ( !bDockSpaceBuilt ) {
        DockspaceBuild( dockspaceID, bDockSpaceBuilt );
    }

    ImGui::Begin( "Dockspace", nullptr, windowFlags );
    ImGui::DockSpace( dockspaceID, ImVec2( 0, 0 ), ImGuiDockNodeFlags_None );
    ImGui::End();
}

....

DockspaceDraw();
ImGui::Begin( "Center", nullptr );
ImGui::End();
ImGui::Begin( "Left", nullptr );
ImGui::End();
ImGui::Begin( "Right", nullptr );
ImGui::End();
ImGui::Begin( "Top", nullptr );
ImGui::End();
ImGui::Begin( "Bottom Right", nullptr );
ImGui::End();
ImGui::Begin( "Bottom", nullptr );
ImGui::End();
ImGui::Begin( "Console", nullptr );
ImGui::End();

[paper apex]

I think you just split one time too many

that last split is splitting the center area into center and the red bit becomes main

(also idk what splitting with a ratio of 1.0 is meant to do :P)

[tame trout]

oh, I see what you mean!

so it should be just

ImGui::DockBuilderDockWindow( "Center", dock_main_id );

without splitting

[paper apex]

after the 6th split, main is that whole center area

yeah

[tame trout]

sweet, thank you mate :)

happy holidays!

!solved