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Docking: Added internal DockBuilderGetCentralNode(). Fixed being unable to undock whole node from dock button in DockSpace with a central node. (#2109)

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This commit is contained in:
omar 2018-11-26 22:18:55 +01:00
parent 962dcb466d
commit 3f51c831de
3 changed files with 18 additions and 7 deletions
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11
imgui.cpp
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@ -10350,7 +10350,7 @@ ImGuiDockNode::ImGuiDockNode(ImGuiID id)
SplitAxis = ImGuiAxis_None;
HostWindow = VisibleWindow = NULL;
OnlyNodeWithWindows = NULL;
CentralNode = OnlyNodeWithWindows = NULL;
LastFrameAlive = LastFrameActive = -1;
LastFocusedNodeID = 0;
SelectedTabID = 0;
@ -10674,7 +10674,7 @@ static void ImGui::DockNodeUpdate(ImGuiDockNode* node)
IM_ASSERT(node->LastFrameActive != g.FrameCount);
node->LastFrameAlive = g.FrameCount;
ImGuiDockNode* central_node = NULL;
node->CentralNode = node->OnlyNodeWithWindows = NULL;
if (node->IsRootNode())
{
DockNodeUpdateVisibleFlagAndInactiveChilds(node);
@ -10682,10 +10682,10 @@ static void ImGui::DockNodeUpdate(ImGuiDockNode* node)
// Find if there's only a single visible window in the hierarchy (in which case we need to display a regular title bar -> FIXME-DOCK: that last part is not done yet!)
ImGuiDockNodeUpdateScanResults results;
DockNodeUpdateScanRec(node, &results);
node->OnlyNodeWithWindows = (results.CountNodesWithWindows == 1 ? results.FirstNodeWithWindows : NULL);
node->CentralNode = results.CentralNode;
node->OnlyNodeWithWindows = (results.CountNodesWithWindows == 1) ? results.FirstNodeWithWindows : NULL;
if (node->LastFocusedNodeID == 0 && results.FirstNodeWithWindows != NULL)
node->LastFocusedNodeID = results.FirstNodeWithWindows->ID;
central_node = results.CentralNode;
// Copy the dock family from of our window so it can be used for proper dock filtering.
// When node has mixed windows, prioritize the family with the most constraint (CompatibleWithNeutral = false) as the reference to copy.
@ -10825,7 +10825,8 @@ static void ImGui::DockNodeUpdate(ImGuiDockNode* node)
}
// Register a hit-test hole in the window unless we are currently dragging a window that is compatible with our dockspace
bool central_node_hole = node->IsRootNode() && host_window && (node->Flags & ImGuiDockNodeFlags_PassthruDockspace) != 0 && central_node != NULL && central_node->IsEmpty();
const ImGuiDockNode* central_node = node->CentralNode;
const bool central_node_hole = node->IsRootNode() && host_window && (node->Flags & ImGuiDockNodeFlags_PassthruDockspace) != 0 && central_node != NULL && central_node->IsEmpty();
bool central_node_hole_register_hit_test_hole = central_node_hole;
if (central_node_hole)
if (const ImGuiPayload* payload = ImGui::GetDragDropPayload())

4
imgui_internal.h
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@ -769,7 +769,8 @@ struct ImGuiDockNode
ImGuiWindow* HostWindow;
ImGuiWindow* VisibleWindow;
ImGuiDockNode* OnlyNodeWithWindows; // [Root node only] Set when there is a single visible node within the hierarchy
ImGuiDockNode* CentralNode; // [Root node only] Pointer to central node.
ImGuiDockNode* OnlyNodeWithWindows; // [Root node only] Set when there is a single visible node within the hierarchy.
int LastFrameAlive; // Last frame number the node was updated or kept alive explicitly with DockSpace() + ImGuiDockNodeFlags_KeepAliveOnly
int LastFrameActive; // Last frame number the node was updated.
ImGuiID LastFocusedNodeID; // [Root node only] Which of our child node (any ancestor in the hierarchy) was last focused.
@ -1505,6 +1506,7 @@ namespace ImGui
// Docking - Builder function needs to be generally called before the DockSpace() node is submitted.
IMGUI_API void DockBuilderDockWindow(const char* window_name, ImGuiID node_id);
IMGUI_API ImGuiDockNode*DockBuilderGetNode(ImGuiID node_id); // Warning: DO NOT HOLD ON ImGuiDockNode* pointer, will be invalided by any split/merge/remove operation.
inline ImGuiDockNode* DockBuilderGetCentralNode(ImGuiID node_id) { ImGuiDockNode* node = DockBuilderGetNode(node_id); if (!node) return NULL; return DockNodeGetRootNode(node)->CentralNode; }
IMGUI_API void DockBuilderAddNode(ImGuiID node_id, ImVec2 ref_size, ImGuiDockNodeFlags flags = 0);
IMGUI_API void DockBuilderRemoveNode(ImGuiID node_id); // Remove node and all its child, undock all windows
IMGUI_API void DockBuilderRemoveNodeDockedWindows(ImGuiID node_id, bool clear_persistent_docking_references = true);

10
imgui_widgets.cpp
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@ -671,6 +671,7 @@ bool ImGui::CloseButton(ImGuiID id, const ImVec2& pos, float radius)
return pressed;
}
// The Collapse button also functions as a Dock Menu button.
bool ImGui::CollapseButton(ImGuiID id, const ImVec2& pos, ImGuiDockNode* dock_node)
{
ImGuiContext& g = *GImGui;
@ -695,7 +696,14 @@ bool ImGui::CollapseButton(ImGuiID id, const ImVec2& pos, ImGuiDockNode* dock_no
// Switch to moving the window after mouse is moved beyond the initial drag threshold
if (IsItemActive() && IsMouseDragging(0))
{
if (dock_node != NULL && DockNodeGetRootNode(dock_node)->OnlyNodeWithWindows != dock_node)
bool can_extract_dock_node = false;
if (dock_node != NULL)
{
ImGuiDockNode* root_node = DockNodeGetRootNode(dock_node);
if (root_node->OnlyNodeWithWindows != dock_node || (root_node->CentralNode != NULL))
can_extract_dock_node = true;
}
if (can_extract_dock_node)
{
float threshold_base = g.FontSize;
float threshold_x = (threshold_base * 2.2f);