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Docking: Added experimental flags to perform more docking filtering and disable resize per axis. Designed for toolbar patterns.

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The local/shared flags specs, saving and inheriting rules are pretty inconsistent at the moment.
This commit is contained in:
omar
2019-11-29 17:52:30 +01:00
parent 4bdbea8375
commit fc9d6b6cb5
3 changed files with 24 additions and 8 deletions
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19
imgui.cpp
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@@ -13486,22 +13486,27 @@ static void ImGui::DockNodePreviewDockSetup(ImGuiWindow* host_window, ImGuiDockN
IM_ASSERT(ref_node_for_rect->IsVisible);
// Filter, figure out where we are allowed to dock
ImGuiDockNodeFlags host_node_flags = host_node ? host_node->GetMergedFlags() : 0;
ImGuiDockNodeFlags src_node_flags = root_payload_as_host ? root_payload_as_host->GetMergedFlags() : root_payload->WindowClass.DockNodeFlagsOverrideSet;
ImGuiDockNodeFlags dst_node_flags = host_node ? host_node->GetMergedFlags() : host_window->WindowClass.DockNodeFlagsOverrideSet;
data->IsCenterAvailable = true;
if (is_outer_docking)
data->IsCenterAvailable = false;
else if (host_node && (host_node_flags & ImGuiDockNodeFlags_NoDocking))
else if (dst_node_flags & ImGuiDockNodeFlags_NoDocking)
data->IsCenterAvailable = false;
else if (host_node && (host_node_flags & ImGuiDockNodeFlags_NoDockingInCentralNode) && host_node->IsCentralNode())
else if (host_node && (dst_node_flags & ImGuiDockNodeFlags_NoDockingInCentralNode) && host_node->IsCentralNode())
data->IsCenterAvailable = false;
else if ((!host_node || !host_node->IsEmpty()) && root_payload_as_host && root_payload_as_host->IsSplitNode() && (root_payload_as_host->OnlyNodeWithWindows == NULL)) // Is _visibly_ split?
data->IsCenterAvailable = false;
else if ((dst_node_flags & ImGuiDockNodeFlags_NoDockingOverMe) || (src_node_flags & ImGuiDockNodeFlags_NoDockingOverOther))
data->IsCenterAvailable = false;
data->IsSidesAvailable = true;
if ((host_node && (host_node_flags & ImGuiDockNodeFlags_NoSplit)) || g.IO.ConfigDockingNoSplit)
if ((dst_node_flags & ImGuiDockNodeFlags_NoSplit) || g.IO.ConfigDockingNoSplit)
data->IsSidesAvailable = false;
else if (!is_outer_docking && host_node && host_node->ParentNode == NULL && host_node->IsCentralNode())
data->IsSidesAvailable = false;
else if ((dst_node_flags & ImGuiDockNodeFlags_NoDockingSplitMe) || (src_node_flags & ImGuiDockNodeFlags_NoDockingSplitOther))
data->IsSidesAvailable = false;
// Build a tentative future node (reuse same structure because it is practical. Shape will be readjusted when previewing a split)
data->FutureNode.HasCloseButton = (host_node ? host_node->HasCloseButton : host_window->HasCloseButton) || (root_payload->HasCloseButton);
@@ -13877,7 +13882,9 @@ void ImGui::DockNodeTreeUpdateSplitter(ImGuiDockNode* node)
bb.Max[axis ^ 1] += child_1->Size[axis ^ 1];
//if (g.IO.KeyCtrl) GetForegroundDrawList(g.CurrentWindow->Viewport)->AddRect(bb.Min, bb.Max, IM_COL32(255,0,255,255));
if ((child_0->GetMergedFlags() | child_1->GetMergedFlags()) & ImGuiDockNodeFlags_NoResize)
const ImGuiDockNodeFlags merged_flags = child_0->GetMergedFlags() | child_1->GetMergedFlags();
const ImGuiDockNodeFlags no_resize_axis_flag = (axis == ImGuiAxis_X) ? ImGuiDockNodeFlags_NoResizeX : ImGuiDockNodeFlags_NoResizeY;
if ((merged_flags & ImGuiDockNodeFlags_NoResize) || (merged_flags & no_resize_axis_flag))
{
ImGuiWindow* window = g.CurrentWindow;
window->DrawList->AddRectFilled(bb.Min, bb.Max, GetColorU32(ImGuiCol_Separator), g.Style.FrameRounding);
@@ -15603,6 +15610,8 @@ void ImGui::ShowMetricsWindow(bool* p_open)
ImGui::CheckboxFlags("LocalFlags: NoDocking", (ImU32*)&node->LocalFlags, ImGuiDockNodeFlags_NoDocking);
ImGui::CheckboxFlags("LocalFlags: NoSplit", (ImU32*)&node->LocalFlags, ImGuiDockNodeFlags_NoSplit);
ImGui::CheckboxFlags("LocalFlags: NoResize", (ImU32*)&node->LocalFlags, ImGuiDockNodeFlags_NoResize);
ImGui::CheckboxFlags("LocalFlags: NoResizeX", (ImU32*)&node->LocalFlags, ImGuiDockNodeFlags_NoResizeX);
ImGui::CheckboxFlags("LocalFlags: NoResizeY", (ImU32*)&node->LocalFlags, ImGuiDockNodeFlags_NoResizeY);
ImGui::CheckboxFlags("LocalFlags: NoTabBar", (ImU32*)&node->LocalFlags, ImGuiDockNodeFlags_NoTabBar);
ImGui::CheckboxFlags("LocalFlags: HiddenTabBar", (ImU32*)&node->LocalFlags, ImGuiDockNodeFlags_HiddenTabBar);
ImGui::CheckboxFlags("LocalFlags: NoWindowMenuButton", (ImU32*)&node->LocalFlags, ImGuiDockNodeFlags_NoWindowMenuButton);

2
imgui.h
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@@ -1739,7 +1739,7 @@ struct ImGuiWindowClass
ImGuiDockNodeFlags DockNodeFlagsOverrideSet; // [EXPERIMENTAL] Dock node flags to set when a window of this class is hosted by a dock node (it doesn't have to be selected!)
ImGuiDockNodeFlags DockNodeFlagsOverrideClear; // [EXPERIMENTAL]
bool DockingAlwaysTabBar; // Set to true to enforce single floating windows of this class always having their own docking node (equivalent of setting the global io.ConfigDockingAlwaysTabBar)
bool DockingAllowUnclassed; // Set to true to allow windows of this class to be docked/merged with an unclassed window.
bool DockingAllowUnclassed; // Set to true to allow windows of this class to be docked/merged with an unclassed window. // FIXME-DOCK: Move to DockNodeFlags override?
ImGuiWindowClass() { ClassId = 0; ParentViewportId = 0; ViewportFlagsOverrideSet = ViewportFlagsOverrideClear = 0x00; DockNodeFlagsOverrideSet = DockNodeFlagsOverrideClear = 0x00; DockingAlwaysTabBar = false; DockingAllowUnclassed = true; }
};

11
imgui_internal.h
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@@ -1086,10 +1086,17 @@ enum ImGuiDockNodeFlagsPrivate_
ImGuiDockNodeFlags_NoWindowMenuButton = 1 << 14, // Local, Saved // Disable window/docking menu (that one that appears instead of the collapse button)
ImGuiDockNodeFlags_NoCloseButton = 1 << 15, // Local, Saved //
ImGuiDockNodeFlags_NoDocking = 1 << 16, // Local, Saved // Disable any form of docking in this dockspace or individual node. (On a whole dockspace, this pretty much defeat the purpose of using a dockspace at all). Note: when turned on, existing docked nodes will be preserved.
ImGuiDockNodeFlags_NoDockingSplitMe = 1 << 17, // [EXPERIMENTAL] Prevent another window/node from splitting this node.
ImGuiDockNodeFlags_NoDockingSplitOther = 1 << 18, // [EXPERIMENTAL] Prevent this node from splitting another window/node.
ImGuiDockNodeFlags_NoDockingOverMe = 1 << 19, // [EXPERIMENTAL] Prevent another window/node to be docked over this node.
ImGuiDockNodeFlags_NoDockingOverOther = 1 << 20, // [EXPERIMENTAL] Prevent this node to be docked over another window/node.
ImGuiDockNodeFlags_NoResizeX = 1 << 21, // [EXPERIMENTAL]
ImGuiDockNodeFlags_NoResizeY = 1 << 22, // [EXPERIMENTAL]
ImGuiDockNodeFlags_SharedFlagsInheritMask_ = ~0,
ImGuiDockNodeFlags_LocalFlagsMask_ = ImGuiDockNodeFlags_NoSplit | ImGuiDockNodeFlags_NoResize | ImGuiDockNodeFlags_AutoHideTabBar | ImGuiDockNodeFlags_DockSpace | ImGuiDockNodeFlags_CentralNode | ImGuiDockNodeFlags_NoTabBar | ImGuiDockNodeFlags_HiddenTabBar | ImGuiDockNodeFlags_NoWindowMenuButton | ImGuiDockNodeFlags_NoCloseButton | ImGuiDockNodeFlags_NoDocking,
ImGuiDockNodeFlags_NoResizeFlagsMask_ = ImGuiDockNodeFlags_NoResize | ImGuiDockNodeFlags_NoResizeX | ImGuiDockNodeFlags_NoResizeY,
ImGuiDockNodeFlags_LocalFlagsMask_ = ImGuiDockNodeFlags_NoSplit | ImGuiDockNodeFlags_NoResizeFlagsMask_ | ImGuiDockNodeFlags_AutoHideTabBar | ImGuiDockNodeFlags_DockSpace | ImGuiDockNodeFlags_CentralNode | ImGuiDockNodeFlags_NoTabBar | ImGuiDockNodeFlags_HiddenTabBar | ImGuiDockNodeFlags_NoWindowMenuButton | ImGuiDockNodeFlags_NoCloseButton | ImGuiDockNodeFlags_NoDocking,
ImGuiDockNodeFlags_LocalFlagsTransferMask_ = ImGuiDockNodeFlags_LocalFlagsMask_ & ~ImGuiDockNodeFlags_DockSpace, // When splitting those flags are moved to the inheriting child, never duplicated
ImGuiDockNodeFlags_SavedFlagsMask_ = ImGuiDockNodeFlags_NoResize | ImGuiDockNodeFlags_DockSpace | ImGuiDockNodeFlags_CentralNode | ImGuiDockNodeFlags_NoTabBar | ImGuiDockNodeFlags_HiddenTabBar | ImGuiDockNodeFlags_NoWindowMenuButton | ImGuiDockNodeFlags_NoCloseButton | ImGuiDockNodeFlags_NoDocking
ImGuiDockNodeFlags_SavedFlagsMask_ = ImGuiDockNodeFlags_NoResizeFlagsMask_ | ImGuiDockNodeFlags_DockSpace | ImGuiDockNodeFlags_CentralNode | ImGuiDockNodeFlags_NoTabBar | ImGuiDockNodeFlags_HiddenTabBar | ImGuiDockNodeFlags_NoWindowMenuButton | ImGuiDockNodeFlags_NoCloseButton | ImGuiDockNodeFlags_NoDocking
};
// Store the source authority (dock node vs window) of a field