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Docking: comments for DockBuilder API.

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This commit is contained in:
omar 2019-08-31 16:51:12 +02:00
parent a4af3cc814
commit d049a7988c
2 changed files with 19 additions and 9 deletions
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18
imgui.cpp
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@ -13740,8 +13740,12 @@ void ImGui::DockBuilderSetNodeSize(ImGuiID node_id, ImVec2 size)
node->AuthorityForSize = ImGuiDataAuthority_DockNode; node->AuthorityForSize = ImGuiDataAuthority_DockNode;
} }
// If you create a regular node, both ref_pos/ref_size will position the window. // Make sure to use the ImGuiDockNodeFlags_DockSpace flag to create a dockspace node! Otherwise this will create a floating node!
// If you create a dockspace node: ref_pos won't be used, ref_size is useful on the first frame to... // - Floating node: you can then call DockBuilderSetNodePos()/DockBuilderSetNodeSize() to position and size the floating node.
// - Dockspace node: calling DockBuilderSetNodePos() is unnecessary.
// - If you intend to split a node immediately after creation using DockBuilderSplitNode(), make sure to call DockBuilderSetNodeSize() beforehand!
// For various reason, the splitting code currently needs a base size otherwise space may not be allocated as precisely as you would expect.
// - Use (id == 0) to let the system allocate a node identifier.
ImGuiID ImGui::DockBuilderAddNode(ImGuiID id, ImGuiDockNodeFlags flags) ImGuiID ImGui::DockBuilderAddNode(ImGuiID id, ImGuiDockNodeFlags flags)
{ {
ImGuiContext* ctx = GImGui; ImGuiContext* ctx = GImGui;
@ -13878,8 +13882,10 @@ void ImGui::DockBuilderRemoveNodeDockedWindows(ImGuiID root_id, bool clear_persi
} }
} }
// If 'out_id_at_dir' or 'out_id_at_opposite_dir' are non NULL, the function will write out the ID of the two new nodes created.
// Return value is ID of the node at the specified direction, so same as (*out_id_at_dir) if that pointer is set.
// FIXME-DOCK: We are not exposing nor using split_outer. // FIXME-DOCK: We are not exposing nor using split_outer.
ImGuiID ImGui::DockBuilderSplitNode(ImGuiID id, ImGuiDir split_dir, float size_ratio_for_node_at_dir, ImGuiID* out_id_at_dir, ImGuiID* out_id_other) ImGuiID ImGui::DockBuilderSplitNode(ImGuiID id, ImGuiDir split_dir, float size_ratio_for_node_at_dir, ImGuiID* out_id_at_dir, ImGuiID* out_id_at_opposite_dir)
{ {
ImGuiContext* ctx = GImGui; ImGuiContext* ctx = GImGui;
IM_ASSERT(split_dir != ImGuiDir_None); IM_ASSERT(split_dir != ImGuiDir_None);
@ -13905,11 +13911,11 @@ ImGuiID ImGui::DockBuilderSplitNode(ImGuiID id, ImGuiDir split_dir, float size_r
DockContextProcessDock(ctx, &req); DockContextProcessDock(ctx, &req);
ImGuiID id_at_dir = node->ChildNodes[(split_dir == ImGuiDir_Left || split_dir == ImGuiDir_Up) ? 0 : 1]->ID; ImGuiID id_at_dir = node->ChildNodes[(split_dir == ImGuiDir_Left || split_dir == ImGuiDir_Up) ? 0 : 1]->ID;
ImGuiID id_other = node->ChildNodes[(split_dir == ImGuiDir_Left || split_dir == ImGuiDir_Up) ? 1 : 0]->ID; ImGuiID id_at_opposite_dir = node->ChildNodes[(split_dir == ImGuiDir_Left || split_dir == ImGuiDir_Up) ? 1 : 0]->ID;
if (out_id_at_dir) if (out_id_at_dir)
*out_id_at_dir = id_at_dir; *out_id_at_dir = id_at_dir;
if (out_id_other) if (out_id_at_opposite_dir)
*out_id_other = id_other; *out_id_at_opposite_dir = id_at_opposite_dir;
return id_at_dir; return id_at_dir;
} }

10
imgui_internal.h
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@ -1800,17 +1800,21 @@ namespace ImGui
IMGUI_API void SetWindowDock(ImGuiWindow* window, ImGuiID dock_id, ImGuiCond cond); IMGUI_API void SetWindowDock(ImGuiWindow* window, ImGuiID dock_id, ImGuiCond cond);
// Docking - Builder function needs to be generally called before the DockSpace() node is submitted. // Docking - Builder function needs to be generally called before the DockSpace() node is submitted.
// Important: do not hold on ImGuiDockNode* pointers. They may be invalidated by any split/merge/remove operation and every frame. // - The DockBuilderXXX functions are designed to _eventually_ become a public API, but it is too early to expose it and guarantee stability.
// - You can create dockspace _or_ floating nodes with this API. To create a dockspace node, make sure to set the ImGuiDockNodeFlags_DockSpace flag.
// - If you intend to split the node immediately after creation using DockBuilderSplitNode(), make sure to call DockBuilderSetNodeSize() beforehand.
// - Call DockBuilderFinish() after you are done.
// - Important: do not hold on ImGuiDockNode* pointers! They may be invalidated by any split/merge/remove operation and every frame.
IMGUI_API void DockBuilderDockWindow(const char* window_name, ImGuiID node_id); IMGUI_API void DockBuilderDockWindow(const char* window_name, ImGuiID node_id);
IMGUI_API ImGuiDockNode*DockBuilderGetNode(ImGuiID node_id); IMGUI_API ImGuiDockNode*DockBuilderGetNode(ImGuiID node_id);
inline ImGuiDockNode* DockBuilderGetCentralNode(ImGuiID node_id) { ImGuiDockNode* node = DockBuilderGetNode(node_id); if (!node) return NULL; return DockNodeGetRootNode(node)->CentralNode; } inline ImGuiDockNode* DockBuilderGetCentralNode(ImGuiID node_id) { ImGuiDockNode* node = DockBuilderGetNode(node_id); if (!node) return NULL; return DockNodeGetRootNode(node)->CentralNode; }
IMGUI_API ImGuiID DockBuilderAddNode(ImGuiID node_id, ImGuiDockNodeFlags flags = 0); // Use (flags == ImGuiDockNodeFlags_DockSpace) to create a dockspace, otherwise it'll create a floating node. IMGUI_API ImGuiID DockBuilderAddNode(ImGuiID node_id = 0, ImGuiDockNodeFlags flags = 0);
IMGUI_API void DockBuilderRemoveNode(ImGuiID node_id); // Remove node and all its child, undock all windows 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); IMGUI_API void DockBuilderRemoveNodeDockedWindows(ImGuiID node_id, bool clear_persistent_docking_references = true);
IMGUI_API void DockBuilderRemoveNodeChildNodes(ImGuiID node_id); // Remove all split/hierarchy. All remaining docked windows will be re-docked to the root. IMGUI_API void DockBuilderRemoveNodeChildNodes(ImGuiID node_id); // Remove all split/hierarchy. All remaining docked windows will be re-docked to the root.
IMGUI_API void DockBuilderSetNodePos(ImGuiID node_id, ImVec2 pos); IMGUI_API void DockBuilderSetNodePos(ImGuiID node_id, ImVec2 pos);
IMGUI_API void DockBuilderSetNodeSize(ImGuiID node_id, ImVec2 size); IMGUI_API void DockBuilderSetNodeSize(ImGuiID node_id, ImVec2 size);
IMGUI_API ImGuiID DockBuilderSplitNode(ImGuiID node_id, ImGuiDir split_dir, float size_ratio_for_node_at_dir, ImGuiID* out_id_dir, ImGuiID* out_id_other); IMGUI_API ImGuiID DockBuilderSplitNode(ImGuiID node_id, ImGuiDir split_dir, float size_ratio_for_node_at_dir, ImGuiID* out_id_at_dir, ImGuiID* out_id_at_opposite_dir);
IMGUI_API void DockBuilderCopyDockSpace(ImGuiID src_dockspace_id, ImGuiID dst_dockspace_id, ImVector<const char*>* in_window_remap_pairs); IMGUI_API void DockBuilderCopyDockSpace(ImGuiID src_dockspace_id, ImGuiID dst_dockspace_id, ImVector<const char*>* in_window_remap_pairs);
IMGUI_API void DockBuilderCopyNode(ImGuiID src_node_id, ImGuiID dst_node_id, ImVector<ImGuiID>* out_node_remap_pairs); IMGUI_API void DockBuilderCopyNode(ImGuiID src_node_id, ImGuiID dst_node_id, ImVector<ImGuiID>* out_node_remap_pairs);
IMGUI_API void DockBuilderCopyWindowSettings(const char* src_name, const char* dst_name); IMGUI_API void DockBuilderCopyWindowSettings(const char* src_name, const char* dst_name);