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Docking: Internals: Moved CentralNode and HiddenTabBar state into LocalFlags for consistency. (#2423, #2109)

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This commit is contained in:
omar 2019-03-27 20:32:44 +01:00
parent fd5859ed04
commit fc95da8aa3
2 changed files with 51 additions and 49 deletions
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90
imgui.cpp
View File

@ -5815,7 +5815,7 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
}
// Docking: Unhide tab bar
if (window->DockNode && window->DockNode->IsHiddenTabBar)
if (window->DockNode && window->DockNode->IsHiddenTabBar())
{
float unhide_sz_draw = ImFloor(g.FontSize * 0.70f);
float unhide_sz_hit = ImFloor(g.FontSize * 0.55f);
@ -11098,8 +11098,10 @@ static void ImGui::DockContextBuildNodesFromSettings(ImGuiContext* ctx, ImGuiDoc
node->SplitAxis = settings->SplitAxis;
if (settings->IsDockSpace)
node->LocalFlags |= ImGuiDockNodeFlags_DockSpace;
node->IsCentralNode = settings->IsCentralNode != 0;
node->IsHiddenTabBar = settings->IsHiddenTabBar != 0;
if (settings->IsCentralNode)
node->LocalFlags |= ImGuiDockNodeFlags_CentralNode;
if (settings->IsHiddenTabBar)
node->LocalFlags |= ImGuiDockNodeFlags_HiddenTabBar;
// Bind host window immediately if it already exist (in case of a rebuild)
// This is useful as the RootWindowForTitleBarHighlight links necessary to highlight the currently focused node requires node->HostWindow to be set.
@ -11198,7 +11200,7 @@ void ImGui::DockContextProcessDock(ImGuiContext* ctx, ImGuiDockRequest* req)
if (target_node)
IM_ASSERT(target_node->LastFrameAlive <= g.FrameCount);
if (target_node && target_window && target_node == target_window->DockNodeAsHost)
IM_ASSERT(target_node->Windows.Size > 0 || target_node->IsSplitNode() || target_node->IsCentralNode);
IM_ASSERT(target_node->Windows.Size > 0 || target_node->IsSplitNode() || target_node->IsCentralNode());
// Create new node and add existing window to it
if (target_node == NULL)
@ -11226,7 +11228,7 @@ void ImGui::DockContextProcessDock(ImGuiContext* ctx, ImGuiDockRequest* req)
new_node->HostWindow = target_node->HostWindow;
target_node = new_node;
}
target_node->IsHiddenTabBar = false;
target_node->LocalFlags &= ~ImGuiDockNodeFlags_HiddenTabBar;
if (target_node != payload_node)
{
@ -11256,13 +11258,14 @@ void ImGui::DockContextProcessDock(ImGuiContext* ctx, ImGuiDockRequest* req)
DockNodeMoveWindows(visible_node, target_node);
DockSettingsRenameNodeReferences(target_node->ID, visible_node->ID);
}
if (target_node->IsCentralNode)
if (target_node->IsCentralNode())
{
// Central node property needs to be moved to a leaf node, pick the last focused one.
// FIXME-DOCKING: If we had to transfer other flags here, what would the policy be?
ImGuiDockNode* last_focused_node = DockContextFindNodeByID(ctx, payload_node->LastFocusedNodeID);
IM_ASSERT(last_focused_node != NULL && DockNodeGetRootNode(last_focused_node) == DockNodeGetRootNode(payload_node));
last_focused_node->IsCentralNode = true;
target_node->IsCentralNode = false;
last_focused_node->LocalFlags |= ImGuiDockNodeFlags_CentralNode;
target_node->LocalFlags &= ~ImGuiDockNodeFlags_CentralNode;
}
IM_ASSERT(target_node->Windows.Size == 0);
@ -11311,7 +11314,7 @@ void ImGui::DockContextProcessUndockNode(ImGuiContext* ctx, ImGuiDockNode* node)
IM_ASSERT(node->IsLeafNode());
IM_ASSERT(node->Windows.Size >= 1);
if (node->IsRootNode() || node->IsCentralNode)
if (node->IsRootNode() || node->IsCentralNode())
{
// In the case of a root node or central node, the node will have to stay in place. Create a new node to receive the payload.
ImGuiDockNode* new_node = DockContextAddNode(ctx, 0);
@ -11357,7 +11360,7 @@ ImGuiDockNode::ImGuiDockNode(ImGuiID id)
AutorityForPos = AutorityForSize = ImGuiDataAutority_DockNode;
AutorityForViewport = ImGuiDataAutority_Auto;
IsVisible = true;
IsFocused = IsCentralNode = IsHiddenTabBar = HasCloseButton = HasCollapseButton = false;
IsFocused = HasCloseButton = HasCollapseButton = false;
WantCloseAll = WantLockSizeOnce = WantMouseMove = WantHiddenTabBarUpdate = WantHiddenTabBarToggle = false;
}
@ -11468,19 +11471,19 @@ static void ImGui::DockNodeRemoveWindow(ImGuiDockNode* node, ImGuiWindow* window
if (node->TabBar)
{
TabBarRemoveTab(node->TabBar, window->ID);
const int tab_count_threshold_for_tab_bar = node->IsCentralNode ? 1 : 2;
const int tab_count_threshold_for_tab_bar = node->IsCentralNode() ? 1 : 2;
if (node->Windows.Size < tab_count_threshold_for_tab_bar)
DockNodeRemoveTabBar(node);
}
if (node->Windows.Size == 0 && !node->IsCentralNode && !node->IsDockSpace() && window->DockId != node->ID)
if (node->Windows.Size == 0 && !node->IsCentralNode() && !node->IsDockSpace() && window->DockId != node->ID)
{
// Automatic dock node delete themselves if they are not holding at least one tab
DockContextRemoveNode(&g, node, true);
return;
}
if (node->Windows.Size == 1 && !node->IsCentralNode && node->HostWindow)
if (node->Windows.Size == 1 && !node->IsCentralNode() && node->HostWindow)
{
ImGuiWindow* remaining_window = node->Windows[0];
if (node->HostWindow->ViewportOwned && node->IsRootNode())
@ -11590,7 +11593,7 @@ static void DockNodeUpdateScanRec(ImGuiDockNode* node, ImGuiDockNodeUpdateScanRe
results->FirstNodeWithWindows = node;
results->CountNodesWithWindows++;
}
if (node->IsCentralNode)
if (node->IsCentralNode())
{
IM_ASSERT(results->CentralNode == NULL); // Should be only one
IM_ASSERT(node->IsLeafNode() && "If you get this assert: please submit .ini file + repro of actions leading to this.");
@ -11639,7 +11642,7 @@ static void ImGui::DockNodeUpdateVisibleFlagAndInactiveChilds(ImGuiDockNode* nod
if (!remove)
continue;
window->DockTabWantClose = false;
if (node->Windows.Size == 1 && !node->IsCentralNode)
if (node->Windows.Size == 1 && !node->IsCentralNode())
{
DockNodeHideHostWindow(node);
DockNodeRemoveWindow(node, window, node->ID); // Will delete the node so it'll be invalid on return
@ -11651,15 +11654,15 @@ static void ImGui::DockNodeUpdateVisibleFlagAndInactiveChilds(ImGuiDockNode* nod
// Auto-hide tab bar option
ImGuiDockNodeFlags node_flags = node->GetMergedFlags();
if (node->WantHiddenTabBarUpdate && node->Windows.Size == 1 && (node_flags & ImGuiDockNodeFlags_AutoHideTabBar) && !node->IsHiddenTabBar)
if (node->WantHiddenTabBarUpdate && node->Windows.Size == 1 && (node_flags & ImGuiDockNodeFlags_AutoHideTabBar) && !node->IsHiddenTabBar())
node->WantHiddenTabBarToggle = true;
node->WantHiddenTabBarUpdate = false;
// Apply toggles at a single point of the frame (here!)
if (node->Windows.Size > 1)
node->IsHiddenTabBar = false;
node->LocalFlags &= ~ImGuiDockNodeFlags_HiddenTabBar;
else if (node->WantHiddenTabBarToggle)
node->IsHiddenTabBar ^= 1;
node->LocalFlags ^= ImGuiDockNodeFlags_HiddenTabBar;
node->WantHiddenTabBarToggle = false;
DockNodeUpdateVisibleFlag(node);
@ -11668,7 +11671,7 @@ static void ImGui::DockNodeUpdateVisibleFlagAndInactiveChilds(ImGuiDockNode* nod
static void ImGui::DockNodeUpdateVisibleFlag(ImGuiDockNode* node)
{
// Update visibility flag
bool is_visible = (node->ParentNode == NULL) ? node->IsDockSpace() : node->IsCentralNode;
bool is_visible = (node->ParentNode == NULL) ? node->IsDockSpace() : node->IsCentralNode();
is_visible |= (node->Windows.Size > 0);
is_visible |= (node->ChildNodes[0] && node->ChildNodes[0]->IsVisible);
is_visible |= (node->ChildNodes[1] && node->ChildNodes[1]->IsVisible);
@ -11968,7 +11971,7 @@ static ImGuiID ImGui::DockNodeUpdateTabListMenu(ImGuiDockNode* node, ImGuiTabBar
node->IsFocused = true;
if (tab_bar->Tabs.Size == 1)
{
if (MenuItem("Hide tab bar", NULL, node->IsHiddenTabBar))
if (MenuItem("Hide tab bar", NULL, node->IsHiddenTabBar()))
node->WantHiddenTabBarToggle = true;
}
else
@ -12008,7 +12011,7 @@ static void ImGui::DockNodeUpdateTabBar(ImGuiDockNode* node, ImGuiWindow* host_w
is_focused = true;
// Hidden tab bar will show a triangle on the upper-left (in Begin)
if (node->IsHiddenTabBar)
if (node->IsHiddenTabBar())
{
node->VisibleWindow = (node->Windows.Size > 0) ? node->Windows[0] : NULL;
node->IsFocused = is_focused;
@ -12375,13 +12378,13 @@ static bool ImGui::DockNodePreviewDockCalc(ImGuiWindow* host_window, ImGuiDockNo
data->IsCenterAvailable = !is_outer_docking;
if (src_is_visibly_splitted && (!host_node || !host_node->IsEmpty()))
data->IsCenterAvailable = false;
if (host_node && (host_node_flags & ImGuiDockNodeFlags_NoDockingInCentralNode) && host_node->IsCentralNode)
if (host_node && (host_node_flags & ImGuiDockNodeFlags_NoDockingInCentralNode) && host_node->IsCentralNode())
data->IsCenterAvailable = false;
data->IsSidesAvailable = true;
if ((host_node && (host_node_flags & ImGuiDockNodeFlags_NoSplit)) || g.IO.ConfigDockingNoSplit)
data->IsSidesAvailable = false;
if (!is_outer_docking && host_node && host_node->ParentNode == NULL && host_node->IsCentralNode)
if (!is_outer_docking && host_node && host_node->ParentNode == NULL && host_node->IsCentralNode())
data->IsSidesAvailable = false;
// Calculate drop shapes geometry for allowed splitting directions
@ -12470,7 +12473,7 @@ static void ImGui::DockNodePreviewDockRender(ImGuiWindow* host_window, ImGuiDock
ImVec2 tab_pos = tab_bar_rect.Min;
if (host_node && host_node->TabBar)
{
if (!host_node->IsHiddenTabBar)
if (!host_node->IsHiddenTabBar())
tab_pos.x += host_node->TabBar->OffsetMax + g.Style.ItemInnerSpacing.x; // We don't use OffsetNewTab because when using non-persistent-order tab bar it is incremented with each Tab submission.
else
tab_pos.x += g.Style.ItemInnerSpacing.x + TabItemCalcSize(host_node->Windows[0]->Name, host_node->Windows[0]->HasCloseButton).x;
@ -12572,10 +12575,7 @@ void ImGui::DockNodeTreeSplit(ImGuiContext* ctx, ImGuiDockNode* parent_node, ImG
child_0->SharedFlags = parent_node->SharedFlags & ImGuiDockNodeFlags_SharedFlagsInheritMask_;
child_1->SharedFlags = parent_node->SharedFlags & ImGuiDockNodeFlags_SharedFlagsInheritMask_;
child_inheritor->LocalFlags = parent_node->LocalFlags & ImGuiDockNodeFlags_LocalFlagsTransferMask_;
child_inheritor->IsCentralNode = parent_node->IsCentralNode;
child_inheritor->IsHiddenTabBar = parent_node->IsHiddenTabBar;
parent_node->LocalFlags &= ~ImGuiDockNodeFlags_LocalFlagsTransferMask_;
parent_node->IsCentralNode = false;
}
void ImGui::DockNodeTreeMerge(ImGuiContext* ctx, ImGuiDockNode* parent_node, ImGuiDockNode* merge_lead_child)
@ -12610,8 +12610,6 @@ void ImGui::DockNodeTreeMerge(ImGuiContext* ctx, ImGuiDockNode* parent_node, ImG
// Flags transfer
parent_node->LocalFlags = ((child_0 ? child_0->LocalFlags : 0) | (child_1 ? child_1->LocalFlags : 0)) & ImGuiDockNodeFlags_LocalFlagsTransferMask_;
parent_node->IsCentralNode = (child_0 && child_0->IsCentralNode) || (child_1 && child_1->IsCentralNode);
parent_node->IsHiddenTabBar = merge_lead_child->IsHiddenTabBar;
if (child_0)
{
@ -12665,12 +12663,12 @@ void ImGui::DockNodeTreeUpdatePosSize(ImGuiDockNode* node, ImVec2 pos, ImVec2 si
}
// 3) If one window is the central node (~ use remaining space, should be made explicit!), use explicit size from the other, and remainder for the central node
else if (child_1->IsCentralNode && child_0->SizeRef[axis] != 0.0f)
else if (child_1->IsCentralNode() && child_0->SizeRef[axis] != 0.0f)
{
child_0_size[axis] = ImMin(size_avail - size_min_each, child_0->SizeRef[axis]);
child_1_size[axis] = (size_avail - child_0_size[axis]);
}
else if (child_0->IsCentralNode && child_1->SizeRef[axis] != 0.0f)
else if (child_0->IsCentralNode() && child_1->SizeRef[axis] != 0.0f)
{
child_1_size[axis] = ImMin(size_avail - size_min_each, child_1->SizeRef[axis]);
child_0_size[axis] = (size_avail - child_1_size[axis]);
@ -12909,7 +12907,7 @@ void ImGui::DockSpace(ImGuiID id, const ImVec2& size_arg, ImGuiDockNodeFlags fla
if (!node)
{
node = DockContextAddNode(ctx, id);
node->IsCentralNode = true;
node->LocalFlags |= ImGuiDockNodeFlags_CentralNode;
}
node->SharedFlags = flags;
node->WindowClass = window_class ? *window_class : ImGuiWindowClass();
@ -13091,8 +13089,8 @@ void ImGui::DockBuilderRemoveNode(ImGuiID node_id)
return;
DockBuilderRemoveNodeDockedWindows(node_id, true);
DockBuilderRemoveNodeChildNodes(node_id);
if (node->IsCentralNode && node->ParentNode)
node->ParentNode->IsCentralNode = true;
if (node->IsCentralNode() && node->ParentNode)
node->ParentNode->LocalFlags = ImGuiDockNodeFlags_CentralNode;
DockContextRemoveNode(ctx, node, true);
}
@ -13117,7 +13115,7 @@ void ImGui::DockBuilderRemoveNodeChildNodes(ImGuiID root_id)
bool want_removal = (root_id == 0) || (node->ID != root_id && DockNodeGetRootNode(node)->ID == root_id);
if (want_removal)
{
if (node->IsCentralNode)
if (node->IsCentralNode())
has_central_node = true;
if (root_id != 0)
DockContextQueueNotifyRemovedNode(ctx, node);
@ -13158,7 +13156,7 @@ void ImGui::DockBuilderRemoveNodeChildNodes(ImGuiID root_id)
}
else if (has_central_node)
{
root_node->IsCentralNode = true;
root_node->LocalFlags |= ImGuiDockNodeFlags_CentralNode;
}
}
@ -13240,7 +13238,6 @@ static ImGuiDockNode* DockBuilderCopyNodeRec(ImGuiDockNode* src_node, ImGuiID ds
dst_node->Size = src_node->Size;
dst_node->SizeRef = src_node->SizeRef;
dst_node->SplitAxis = src_node->SplitAxis;
dst_node->IsCentralNode = src_node->IsCentralNode;
out_node_remap_pairs->push_back(src_node->ID);
out_node_remap_pairs->push_back(dst_node->ID);
@ -13514,7 +13511,7 @@ void ImGui::BeginDocked(ImGuiWindow* window, bool* p_open)
// Update window flag
IM_ASSERT((window->Flags & ImGuiWindowFlags_ChildWindow) == 0);
window->Flags |= ImGuiWindowFlags_ChildWindow | ImGuiWindowFlags_AlwaysUseWindowPadding | ImGuiWindowFlags_NoResize;
if (node->IsHiddenTabBar)
if (node->IsHiddenTabBar())
window->Flags |= ImGuiWindowFlags_NoTitleBar;
else
window->Flags &= ~ImGuiWindowFlags_NoTitleBar; // Clear the NoTitleBar flag in case the user set it: confusingly enough we need a title bar height so we are correctly offset, but it won't be displayed!
@ -13580,7 +13577,7 @@ void ImGui::BeginAsDockableDragDropTarget(ImGuiWindow* window)
else
allow_null_target_node = true; // Dock into a regular window
const ImRect explicit_target_rect = (target_node && target_node->TabBar && !target_node->IsHiddenTabBar) ? target_node->TabBar->BarRect : ImRect(window->Pos, window->Pos + ImVec2(window->Size.x, GetFrameHeight()));
const ImRect explicit_target_rect = (target_node && target_node->TabBar && !target_node->IsHiddenTabBar()) ? target_node->TabBar->BarRect : ImRect(window->Pos, window->Pos + ImVec2(window->Size.x, GetFrameHeight()));
const bool is_explicit_target = g.IO.ConfigDockingWithShift || IsMouseHoveringRect(explicit_target_rect.Min, explicit_target_rect.Max);
// Preview docking request and find out split direction/ratio
@ -13590,7 +13587,7 @@ void ImGui::BeginAsDockableDragDropTarget(ImGuiWindow* window)
{
ImGuiDockPreviewData split_inner, split_outer;
ImGuiDockPreviewData* split_data = &split_inner;
if (target_node && (target_node->ParentNode || target_node->IsCentralNode))
if (target_node && (target_node->ParentNode || target_node->IsCentralNode()))
if (ImGuiDockNode* root_node = DockNodeGetRootNode(target_node))
if (DockNodePreviewDockCalc(window, root_node, payload_window, &split_outer, is_explicit_target, true))
split_data = &split_outer;
@ -13714,8 +13711,8 @@ static void DockSettingsHandler_DockNodeToSettings(ImGuiDockContext* dc, ImGuiDo
node_settings.SplitAxis = node->IsSplitNode() ? (char)node->SplitAxis : ImGuiAxis_None;
node_settings.Depth = (char)depth;
node_settings.IsDockSpace = (char)node->IsDockSpace();
node_settings.IsCentralNode = (char)node->IsCentralNode;
node_settings.IsHiddenTabBar = (char)node->IsHiddenTabBar;
node_settings.IsCentralNode = (char)node->IsCentralNode();
node_settings.IsHiddenTabBar = (char)node->IsHiddenTabBar();
node_settings.Pos = ImVec2ih((short)node->Pos.x, (short)node->Pos.y);
node_settings.Size = ImVec2ih((short)node->Size.x, (short)node->Size.y);
node_settings.SizeRef = ImVec2ih((short)node->SizeRef.x, (short)node->SizeRef.y);
@ -14215,11 +14212,12 @@ void ImGui::ShowDockingDebug()
ImGui::BulletText("SelectedTabID: 0x%08X", node->SelectedTabID);
ImGui::BulletText("LastFocusedNodeID: 0x%08X", node->LastFocusedNodeID);
if (ImGui::TreeNode("flags", "SharedFlags 0x%03X NodeFlags 0x%03X%s%s%s%s",
node->SharedFlags, node->LocalFlags, node->IsDockSpace() ? ", IsDockSpace" : "", node->IsCentralNode ? ", IsCentralNode" : "",
node->SharedFlags, node->LocalFlags, node->IsDockSpace() ? ", IsDockSpace" : "", node->IsCentralNode() ? ", IsCentralNode" : "",
(g.FrameCount - node->LastFrameAlive < 2) ? ", IsAlive" : "", (g.FrameCount - node->LastFrameActive < 2) ? ", IsActive" : ""))
{
ImGui::CheckboxFlags("NodeFlags: NoSplit", (unsigned int*)&node->LocalFlags, ImGuiDockNodeFlags_NoSplit);
ImGui::CheckboxFlags("NodeFlags: NoResize", (unsigned int*)&node->LocalFlags, ImGuiDockNodeFlags_NoResize);
ImGui::CheckboxFlags("LocalFlags: NoSplit", (unsigned int*)&node->LocalFlags, ImGuiDockNodeFlags_NoSplit);
ImGui::CheckboxFlags("LocalFlags: NoResize", (unsigned int*)&node->LocalFlags, ImGuiDockNodeFlags_NoResize);
ImGui::CheckboxFlags("LocalFlags: HiddenTabBar",(unsigned int*)&node->LocalFlags, ImGuiDockNodeFlags_HiddenTabBar);
ImGui::TreePop();
}
if (node->ChildNodes[0])
@ -14327,7 +14325,7 @@ void ImGui::ShowDockingDebug()
char buf[64] = "";
char* p = buf;
ImDrawList* overlay_draw_list = node->HostWindow ? GetForegroundDrawList(node->HostWindow) : GetForegroundDrawList((ImGuiViewportP*)GetMainViewport());
p += ImFormatString(p, buf + IM_ARRAYSIZE(buf) - p, "DockId: %X%s\n", node->ID, node->IsCentralNode ? " *CentralNode*" : "");
p += ImFormatString(p, buf + IM_ARRAYSIZE(buf) - p, "DockId: %X%s\n", node->ID, node->IsCentralNode() ? " *CentralNode*" : "");
p += ImFormatString(p, buf + IM_ARRAYSIZE(buf) - p, "Size: (%.0f, %.0f)\n", node->Size.x, node->Size.y);
p += ImFormatString(p, buf + IM_ARRAYSIZE(buf) - p, "SizeRef: (%.0f, %.0f)\n", node->SizeRef.x, node->SizeRef.y);
int depth = DockNodeGetDepth(node);

10
imgui_internal.h
View File

@ -851,9 +851,13 @@ struct ImGuiTabBarRef
enum ImGuiDockNodeFlagsPrivate_
{
// [Internal]
ImGuiDockNodeFlags_DockSpace = 1 << 10, // Local // A dockspace is a node that occupy space within an existing user window. Otherwise the node is floating and create its own window.
ImGuiDockNodeFlags_CentralNode = 1 << 11, // Local
ImGuiDockNodeFlags_HiddenTabBar = 1 << 13, // Local // Tab bar is hidden, with a triangle in the corner to show it again (NB: actual tab-bar instance may be destroyed as this is only used for single-window tab bar)
ImGuiDockNodeFlags_SharedFlagsInheritMask_ = ~0,
ImGuiDockNodeFlags_LocalFlagsTransferMask_ = ImGuiDockNodeFlags_NoResize | ImGuiDockNodeFlags_AutoHideTabBar // When splitting those flags are moved to the inheriting child, never duplicated
ImGuiDockNodeFlags_LocalFlagsMask_ = ImGuiDockNodeFlags_NoSplit | ImGuiDockNodeFlags_NoResize | ImGuiDockNodeFlags_AutoHideTabBar | ImGuiDockNodeFlags_DockSpace | ImGuiDockNodeFlags_CentralNode | ImGuiDockNodeFlags_HiddenTabBar,
ImGuiDockNodeFlags_LocalFlagsTransferMask_ = ImGuiDockNodeFlags_LocalFlagsMask_ & ~ImGuiDockNodeFlags_DockSpace // When splitting those flags are moved to the inheriting child, never duplicated
};
enum ImGuiDataAutority_
@ -894,8 +898,6 @@ struct ImGuiDockNode
ImGuiDataAutority AutorityForViewport :3;
bool IsVisible :1; // Set to false when the node is hidden (usually disabled as it has no active window)
bool IsFocused :1;
bool IsCentralNode :1;
bool IsHiddenTabBar :1;
bool HasCloseButton :1;
bool HasCollapseButton :1;
bool WantCloseAll :1; // Set when closing all tabs at once.
@ -908,6 +910,8 @@ struct ImGuiDockNode
~ImGuiDockNode();
bool IsRootNode() const { return ParentNode == NULL; }
bool IsDockSpace() const { return (LocalFlags & ImGuiDockNodeFlags_DockSpace) != 0; }
bool IsCentralNode() const { return (LocalFlags & ImGuiDockNodeFlags_CentralNode) != 0; }
bool IsHiddenTabBar() const { return (LocalFlags & ImGuiDockNodeFlags_HiddenTabBar) != 0; }
bool IsSplitNode() const { return ChildNodes[0] != NULL; }
bool IsLeafNode() const { return ChildNodes[0] == NULL; }
bool IsEmpty() const { return ChildNodes[0] == NULL && Windows.Size == 0; }