demo: dockspace + documents example apps
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4DBug
@@ -951,4 +951,306 @@ function ShowExampleAppCustomRendering(p_open)
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return p_open
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end
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----------------------------------------------------------------
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-- [SECTION] Example App: Docking, DockSpace / ShowExampleAppDockSpace()
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----------------------------------------------------------------
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local DSA = { IsFullscreen = true, KeepWindowPadding = false, DockSpaceFlags = 0, opt_demo_mode = 0, opt_demo_mode_changed = false }
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local function ShowExampleAppDockSpaceAdvanced(args, p_open)
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local dockspace_flags = args.DockSpaceFlags
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local W = ImGuiWindowFlags
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local window_flags = W.NoDocking
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if args.IsFullscreen then
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local viewport = ImGui.GetMainViewport()
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ImGui.SetNextWindowPos(viewport.WorkPos)
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ImGui.SetNextWindowSize(viewport.WorkSize)
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ImGui.SetNextWindowViewport(viewport.ID)
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ImGui.PushStyleVar(ImGuiStyleVar.WindowRounding, 0.0)
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ImGui.PushStyleVar(ImGuiStyleVar.WindowBorderSize, 0.0)
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window_flags = bit32.bor(window_flags, W.NoTitleBar, W.NoCollapse, W.NoResize, W.NoMove, W.NoBringToFrontOnFocus, W.NoNavFocus, W.NoBackground)
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else
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dockspace_flags = bit32.band(dockspace_flags, bit32.bnot(ImGuiDockNodeFlags.PassthruCentralNode))
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end
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if not args.KeepWindowPadding then ImGui.PushStyleVar(ImGuiStyleVar.WindowPadding, ImVec2(0.0, 0.0)) end
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p_open = ImGui.Begin("Window with a DockSpace", p_open, window_flags)
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if not args.KeepWindowPadding then ImGui.PopStyleVar() end
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if args.IsFullscreen then ImGui.PopStyleVar(2) end
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local dockspace_id = ImGui.GetID("MyDockSpace")
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ImGui.DockSpace(dockspace_id, ImVec2(0.0, 0.0), dockspace_flags)
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ImGui.End()
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return p_open
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end
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function ShowExampleAppDockSpace(p_open)
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local args = DSA
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if args.opt_demo_mode == 0 then
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ImGui.DockSpaceOverViewport(0, nil, args.DockSpaceFlags)
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else
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p_open = ShowExampleAppDockSpaceAdvanced(args, p_open)
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end
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if args.opt_demo_mode_changed then ImGui.SetNextWindowFocus() end
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p_open = ImGui.Begin("Examples: Dockspace", p_open, ImGuiWindowFlags.MenuBar)
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local c1, c2
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c1, args.opt_demo_mode = ImGui.RadioButton("Basic demo mode", args.opt_demo_mode, 0)
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c2, args.opt_demo_mode = ImGui.RadioButton("Advanced demo mode", args.opt_demo_mode, 1)
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args.opt_demo_mode_changed = c1 or c2
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ImGui.SeparatorText("Options")
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local D = ImGuiDockNodeFlags
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if bit32.band(ImGui.GetIO().ConfigFlags, ImGuiConfigFlags.DockingEnable) == 0 then
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ShowDockingDisabledMessage()
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elseif args.opt_demo_mode == 0 then
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args.DockSpaceFlags = bit32.band(args.DockSpaceFlags, D.PassthruCentralNode)
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_, args.DockSpaceFlags = ImGui.CheckboxFlags("Flag: PassthruCentralNode", args.DockSpaceFlags, D.PassthruCentralNode)
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else
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_, args.IsFullscreen = ImGui.Checkbox("Fullscreen", args.IsFullscreen)
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_, args.KeepWindowPadding = ImGui.Checkbox("Keep Window Padding", args.KeepWindowPadding)
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ImGui.SameLine()
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HelpMarker("This is mostly exposed to facilitate understanding that a DockSpace() is _inside_ a window.")
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ImGui.BeginDisabled(args.IsFullscreen == false)
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_, args.DockSpaceFlags = ImGui.CheckboxFlags("Flag: PassthruCentralNode", args.DockSpaceFlags, D.PassthruCentralNode)
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ImGui.EndDisabled()
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for _, n in ipairs({ "NoDockingOverCentralNode", "NoDockingSplit", "NoUndocking", "NoResize", "AutoHideTabBar" }) do
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if D[n] then _, args.DockSpaceFlags = ImGui.CheckboxFlags("Flag: " .. n, args.DockSpaceFlags, D[n]) end
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end
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end
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if ImGui.BeginMenuBar() then
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if ImGui.BeginMenu("Help") then
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ImGui.TextUnformatted("This demonstrates the use of ImGui::DockSpace() which allows you to manually\ncreate a docking node _within_ another window.\nThe \"Basic\" version uses the ImGui::DockSpaceOverViewport() helper. Most applications can probably use this.")
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ImGui.Separator()
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ImGui.TextUnformatted("When docking is enabled, you can ALWAYS dock MOST window into another! Try it now!\n- Drag from window title bar or their tab to dock/undock.\n- Drag from window menu button (upper-left button) to undock an entire node (all windows).\n- Hold SHIFT to disable docking (if io.ConfigDockingWithShift == false, default)\n- Hold SHIFT to enable docking (if io.ConfigDockingWithShift == true)")
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ImGui.Separator()
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ImGui.TextUnformatted("More details:"); ImGui.Bullet(); ImGui.SameLine(); ImGui.TextLinkOpenURL("Docking Wiki page", "https://github.com/ocornut/imgui/wiki/Docking")
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ImGui.BulletText("Read comments in ShowExampleAppDockSpace()")
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ImGui.EndMenu()
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end
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ImGui.EndMenuBar()
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end
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ImGui.End()
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return p_open
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end
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----------------------------------------------------------------
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-- [SECTION] Example App: Documents Handling / ShowExampleAppDocuments()
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----------------------------------------------------------------
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local function MyDocument(uid, name, open, color)
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if open == nil then open = true end
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local d = { UID = uid, NameBuf = Buf(name, 32), Open = open, OpenPrev = open, Dirty = false, Color = color or ImVec4(1.0, 1.0, 1.0, 1.0) }
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function d:Name() return BufStr(self.NameBuf) end
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function d:DoOpen() self.Open = true end
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function d:DoForceClose() self.Open = false; self.Dirty = false end
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function d:DoSave() self.Dirty = false end
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return d
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end
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local Docs = nil
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local function DocsInit()
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local app = { Documents = {
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MyDocument(0, "Lettuce", true, ImVec4(0.4, 0.8, 0.4, 1.0)),
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MyDocument(1, "Eggplant", true, ImVec4(0.8, 0.5, 1.0, 1.0)),
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MyDocument(2, "Carrot", true, ImVec4(1.0, 0.8, 0.5, 1.0)),
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MyDocument(3, "Tomato", false, ImVec4(1.0, 0.3, 0.4, 1.0)),
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MyDocument(4, "A Rather Long Title", false, ImVec4(0.4, 0.8, 0.8, 1.0)),
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MyDocument(5, "Some Document", false, ImVec4(0.8, 0.8, 1.0, 1.0)),
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}, CloseQueue = {}, RenamingDoc = nil, RenamingStarted = false,
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opt_target = 1, opt_reorderable = true, opt_fitting_flags = ImGuiTabBarFlags.FittingPolicyDefault_ }
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function app:QueueClose(doc)
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for _, d in ipairs(self.CloseQueue) do if d == doc then return end end
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self.CloseQueue[#self.CloseQueue + 1] = doc
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end
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function app:GetTabName(doc) return string.format("%s###doc%d", doc:Name(), doc.UID) end
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function app:DisplayDocContents(doc)
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ImGui.PushID("doc" .. doc.UID)
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ImGui.Text("Document \"%s\"", doc:Name())
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ImGui.PushStyleColor(ImGuiCol.Text, doc.Color)
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ImGui.TextWrapped("Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.")
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ImGui.PopStyleColor()
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ImGui.SetNextItemShortcut(bit32.bor(ImGuiMod_Ctrl, ImGuiKey.R), ImGuiInputFlags.Tooltip)
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if ImGui.Button("Rename..") then self.RenamingDoc = doc; self.RenamingStarted = true end
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ImGui.SameLine()
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ImGui.SetNextItemShortcut(bit32.bor(ImGuiMod_Ctrl, ImGuiKey.M), ImGuiInputFlags.Tooltip)
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if ImGui.Button("Modify") then doc.Dirty = true end
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ImGui.SameLine()
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ImGui.SetNextItemShortcut(bit32.bor(ImGuiMod_Ctrl, ImGuiKey.S), ImGuiInputFlags.Tooltip)
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if ImGui.Button("Save") then doc:DoSave() end
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ImGui.SameLine()
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ImGui.SetNextItemShortcut(bit32.bor(ImGuiMod_Ctrl, ImGuiKey.W), ImGuiInputFlags.Tooltip)
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if ImGui.Button("Close") then self:QueueClose(doc) end
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ImGui.ColorEdit3("color", doc.Color)
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ImGui.PopID()
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end
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function app:DisplayDocContextMenu(doc)
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if not ImGui.BeginPopupContextItem() then return end
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if ImGui.MenuItem("Save " .. doc:Name(), "Ctrl+S", false, doc.Open) then doc:DoSave() end
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if ImGui.MenuItem("Rename...", "Ctrl+R", false, doc.Open) then self.RenamingDoc = doc end
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if ImGui.MenuItem("Close", "Ctrl+W", false, doc.Open) then self:QueueClose(doc) end
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ImGui.EndPopup()
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end
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function app:NotifyOfDocumentsClosedElsewhere()
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for _, doc in ipairs(self.Documents) do
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if not doc.Open and doc.OpenPrev then ImGui.SetTabItemClosed(doc:Name()) end
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doc.OpenPrev = doc.Open
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end
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end
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return app
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end
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function ShowExampleAppDocuments(p_open)
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Docs = Docs or DocsInit()
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local app = Docs
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local Target_Tab, Target_DockSpaceAndWindow = 1, 2
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local window_contents_visible
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p_open, window_contents_visible = ImGui.Begin("Example: Documents", p_open, ImGuiWindowFlags.MenuBar)
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if not window_contents_visible and app.opt_target ~= Target_DockSpaceAndWindow then
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ImGui.End()
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return p_open
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end
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if ImGui.BeginMenuBar() then
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if ImGui.BeginMenu("File") then
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local open_count = 0
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for _, doc in ipairs(app.Documents) do if doc.Open then open_count = open_count + 1 end end
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if ImGui.BeginMenu("Open", open_count < #app.Documents) then
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for _, doc in ipairs(app.Documents) do
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if not doc.Open and ImGui.MenuItem(doc:Name()) then doc:DoOpen() end
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end
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ImGui.EndMenu()
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end
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if ImGui.MenuItem("Close All Documents", nil, false, open_count > 0) then
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for _, doc in ipairs(app.Documents) do app:QueueClose(doc) end
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end
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if ImGui.MenuItem("Exit") and p_open ~= nil then p_open = false end
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ImGui.EndMenu()
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end
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ImGui.EndMenuBar()
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end
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for doc_n, doc in ipairs(app.Documents) do
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if doc_n > 1 then ImGui.SameLine() end
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ImGui.PushID("doc" .. doc.UID)
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local pressed
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pressed, doc.Open = ImGui.Checkbox(doc:Name(), doc.Open)
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if pressed and not doc.Open then doc:DoForceClose() end
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ImGui.PopID()
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end
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ImGui.PushItemWidth(ImGui.GetFontSize() * 12)
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app.opt_target = ImGui.Combo("Output", app.opt_target, "None\0TabBar+Tabs\0DockSpace+Window\0")
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ImGui.PopItemWidth()
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local redock_all = false
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if app.opt_target == Target_Tab then ImGui.SameLine(); _, app.opt_reorderable = ImGui.Checkbox("Reorderable Tabs", app.opt_reorderable) end
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if app.opt_target == Target_DockSpaceAndWindow then ImGui.SameLine(); redock_all = ImGui.Button("Redock all") end
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ImGui.Separator()
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if app.opt_target == Target_Tab then
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local tab_bar_flags = bit32.bor(app.opt_fitting_flags, app.opt_reorderable and ImGuiTabBarFlags.Reorderable or 0, ImGuiTabBarFlags.DrawSelectedOverline)
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if ImGui.BeginTabBar("##tabs", tab_bar_flags) then
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if app.opt_reorderable then app:NotifyOfDocumentsClosedElsewhere() end
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for _, doc in ipairs(app.Documents) do
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if doc.Open then
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local tab_flags = doc.Dirty and ImGuiTabItemFlags.UnsavedDocument or 0
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local visible
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visible, doc.Open = ImGui.BeginTabItem(app:GetTabName(doc), doc.Open, tab_flags)
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if not doc.Open and doc.Dirty then
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doc.Open = true
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app:QueueClose(doc)
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end
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app:DisplayDocContextMenu(doc)
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if visible then
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app:DisplayDocContents(doc)
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ImGui.EndTabItem()
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end
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end
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end
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ImGui.EndTabBar()
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end
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elseif app.opt_target == Target_DockSpaceAndWindow then
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if bit32.band(ImGui.GetIO().ConfigFlags, ImGuiConfigFlags.DockingEnable) ~= 0 then
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app:NotifyOfDocumentsClosedElsewhere()
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local dockspace_id = ImGui.GetID("MyDockSpace")
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ImGui.DockSpace(dockspace_id)
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for _, doc in ipairs(app.Documents) do
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if doc.Open then
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ImGui.SetNextWindowDockID(dockspace_id, redock_all and ImGuiCond.Always or ImGuiCond.FirstUseEver)
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local window_flags = doc.Dirty and ImGuiWindowFlags.UnsavedDocument or 0
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local visible
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doc.Open, visible = ImGui.Begin(doc:Name(), doc.Open, window_flags)
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if not doc.Open and doc.Dirty then
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doc.Open = true
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app:QueueClose(doc)
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end
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app:DisplayDocContextMenu(doc)
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if visible then app:DisplayDocContents(doc) end
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ImGui.End()
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end
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end
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else
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ShowDockingDisabledMessage()
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end
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end
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if not window_contents_visible then
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ImGui.End()
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return p_open
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end
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if app.RenamingDoc ~= nil then
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if app.RenamingStarted then ImGui.OpenPopup("Rename") end
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if ImGui.BeginPopup("Rename") then
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ImGui.SetNextItemWidth(ImGui.GetFontSize() * 30)
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if ImGui.InputText("###Name", app.RenamingDoc.NameBuf, 32, ImGuiInputTextFlags.EnterReturnsTrue) then
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ImGui.CloseCurrentPopup()
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app.RenamingDoc = nil
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end
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if app.RenamingStarted then ImGui.SetKeyboardFocusHere(-1) end
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ImGui.EndPopup()
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else
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app.RenamingDoc = nil
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end
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app.RenamingStarted = false
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end
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if #app.CloseQueue > 0 then
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local close_queue_unsaved_documents = 0
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for _, doc in ipairs(app.CloseQueue) do if doc.Dirty then close_queue_unsaved_documents = close_queue_unsaved_documents + 1 end end
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if close_queue_unsaved_documents == 0 then
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for _, doc in ipairs(app.CloseQueue) do doc:DoForceClose() end
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app.CloseQueue = {}
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else
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if not ImGui.IsPopupOpen("Save?") then ImGui.OpenPopup("Save?") end
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if ImGui.BeginPopupModal("Save?", nil, ImGuiWindowFlags.AlwaysAutoResize) then
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ImGui.Text("Save change to the following items?")
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local item_height = ImGui.GetTextLineHeightWithSpacing()
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if ImGui.BeginChild(ImGui.GetID("frame"), ImVec2(-FLT_MIN, 6.25 * item_height), ImGuiChildFlags.FrameStyle) then
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for _, doc in ipairs(app.CloseQueue) do if doc.Dirty then ImGui.Text("%s", doc:Name()) end end
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end
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ImGui.EndChild()
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local button_size = ImVec2(ImGui.GetFontSize() * 7.0, 0.0)
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if ImGui.Button("Yes", button_size) then
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for _, doc in ipairs(app.CloseQueue) do
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if doc.Dirty then doc:DoSave() end
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doc:DoForceClose()
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end
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app.CloseQueue = {}
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ImGui.CloseCurrentPopup()
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end
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ImGui.SameLine()
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if ImGui.Button("No", button_size) then
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for _, doc in ipairs(app.CloseQueue) do doc:DoForceClose() end
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app.CloseQueue = {}
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ImGui.CloseCurrentPopup()
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end
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ImGui.SameLine()
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if ImGui.Button("Cancel", button_size) then
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app.CloseQueue = {}
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ImGui.CloseCurrentPopup()
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end
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ImGui.EndPopup()
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end
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end
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end
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ImGui.End()
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return p_open
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end
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return true
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