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Docking: Improved resizing system so that non-central zone are better at keeping their fixed size.

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This commit is contained in:
ocornut 2021-09-14 17:57:47 +02:00
parent 29828d0469
commit e7cc534367
3 changed files with 41 additions and 5 deletions
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2
docs/CHANGELOG.txt
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@ -145,6 +145,8 @@ Docking+Viewports Branch:
docking hierarchy. Added ImGuiFocusedFlags_DockHierarchy flag to consider docking hierarchy in the test.
- IsWindowHovered: Fixed using ImGuiHoveredFlags_ChildWindows (without _RootWindow) from leaking the
docking hierarchy. Added ImGuiHoveredFlags_DockHierarchy flag to consider docking hierarchy in the test.
- Docking: Improved resizing system so that non-central zone are better at keeping their fixed size.
The algorithm is still not handling the repartition of size idealy for nested sibling, but it got better.
- Docking: Fixed settings load issue when mouse wheeling. (#4310)
- Docking: Fixed manually created floating node with a central node from not hiding when windows are gone.
- Docking + Drag and Drop: Fixed using BeginDragDropSource() or BeginDragDropTarget() inside a Begin()

43
imgui.cpp
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@ -12627,6 +12627,7 @@ namespace ImGui
static void DockNodeUpdate(ImGuiDockNode* node);
static void DockNodeUpdateForRootNode(ImGuiDockNode* node);
static void DockNodeUpdateFlagsAndCollapse(ImGuiDockNode* node);
static void DockNodeUpdateHasCentralNodeChild(ImGuiDockNode* node);
static void DockNodeUpdateTabBar(ImGuiDockNode* node, ImGuiWindow* host_window);
static void DockNodeAddTabBar(ImGuiDockNode* node);
static void DockNodeRemoveTabBar(ImGuiDockNode* node);
@ -13301,6 +13302,7 @@ bool ImGui::DockContextCalcDropPosForDocking(ImGuiWindow* target, ImGuiDockNode*
// - DockNodeFindInfo()
// - DockNodeFindWindowByID()
// - DockNodeUpdateFlagsAndCollapse()
// - DockNodeUpdateHasCentralNodeFlag()
// - DockNodeUpdateVisibleFlag()
// - DockNodeStartMouseMovingWindow()
// - DockNodeUpdate()
@ -13338,7 +13340,7 @@ ImGuiDockNode::ImGuiDockNode(ImGuiID id)
AuthorityForPos = AuthorityForSize = ImGuiDataAuthority_DockNode;
AuthorityForViewport = ImGuiDataAuthority_Auto;
IsVisible = true;
IsFocused = HasCloseButton = HasWindowMenuButton = false;
IsFocused = HasCloseButton = HasWindowMenuButton = HasCentralNodeChild = false;
WantCloseAll = WantLockSizeOnce = WantMouseMove = WantHiddenTabBarUpdate = WantHiddenTabBarToggle = false;
MarkedForPosSizeWrite = false;
}
@ -13625,6 +13627,7 @@ static void ImGui::DockNodeUpdateFlagsAndCollapse(ImGuiDockNode* node)
// There is the possibility that one of our child becoming empty will delete itself and moving its sibling contents into 'node'.
// If 'node->ChildNode[0]' delete itself, then 'node->ChildNode[1]->Windows' will be moved into 'node'
// If 'node->ChildNode[1]' delete itself, then 'node->ChildNode[0]->Windows' will be moved into 'node' and the "remove inactive windows" loop will have run twice on those windows (harmless)
node->HasCentralNodeChild = false;
if (node->ChildNodes[0])
DockNodeUpdateFlagsAndCollapse(node->ChildNodes[0]);
if (node->ChildNodes[1])
@ -13684,6 +13687,25 @@ static void ImGui::DockNodeUpdateFlagsAndCollapse(ImGuiDockNode* node)
DockNodeUpdateVisibleFlag(node);
}
// This is rarely called as DockNodeUpdateForRootNode() generally does it most frames.
static void ImGui::DockNodeUpdateHasCentralNodeChild(ImGuiDockNode* node)
{
node->HasCentralNodeChild = false;
if (node->ChildNodes[0])
DockNodeUpdateHasCentralNodeChild(node->ChildNodes[0]);
if (node->ChildNodes[1])
DockNodeUpdateHasCentralNodeChild(node->ChildNodes[1]);
if (node->IsRootNode())
{
ImGuiDockNode* mark_node = node->CentralNode;
while (mark_node)
{
mark_node->HasCentralNodeChild = true;
mark_node = mark_node->ParentNode;
}
}
}
static void ImGui::DockNodeUpdateVisibleFlag(ImGuiDockNode* node)
{
// Update visibility flag
@ -13733,6 +13755,13 @@ static void ImGui::DockNodeUpdateForRootNode(ImGuiDockNode* node)
break;
}
}
ImGuiDockNode* mark_node = node->CentralNode;
while (mark_node)
{
mark_node->HasCentralNodeChild = true;
mark_node = mark_node->ParentNode;
}
}
static void DockNodeSetupHostWindow(ImGuiDockNode* node, ImGuiWindow* host_window)
@ -14791,6 +14820,7 @@ void ImGui::DockNodeTreeSplit(ImGuiContext* ctx, ImGuiDockNode* parent_node, ImG
DockNodeMoveWindows(parent_node->ChildNodes[split_inheritor_child_idx], parent_node);
DockSettingsRenameNodeReferences(parent_node->ID, parent_node->ChildNodes[split_inheritor_child_idx]->ID);
DockNodeUpdateHasCentralNodeChild(DockNodeGetRootNode(parent_node));
DockNodeTreeUpdatePosSize(parent_node, parent_node->Pos, parent_node->Size);
// Flags transfer (e.g. this is where we transfer the ImGuiDockNodeFlags_CentralNode property)
@ -14914,12 +14944,12 @@ 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_0->SizeRef[axis] != 0.0f && child_1->IsCentralNode())
else if (child_0->SizeRef[axis] != 0.0f && child_1->HasCentralNodeChild)
{
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_1->SizeRef[axis] != 0.0f && child_0->IsCentralNode())
else if (child_1->SizeRef[axis] != 0.0f && child_0->HasCentralNodeChild)
{
child_1_size[axis] = ImMin(size_avail - size_min_each, child_1->SizeRef[axis]);
child_0_size[axis] = (size_avail - child_1_size[axis]);
@ -15696,6 +15726,7 @@ void ImGui::DockBuilderCopyDockSpace(ImGuiID src_dockspace_id, ImGuiID dst_docks
}
}
// FIXME-DOCK: This is awkward because in series of split user is likely to loose access to its root node.
void ImGui::DockBuilderFinish(ImGuiID root_id)
{
ImGuiContext* ctx = GImGui;
@ -15759,6 +15790,7 @@ static ImGuiDockNode* ImGui::DockContextBindNodeToWindow(ImGuiContext* ctx, ImGu
ancestor_node = ancestor_node->ParentNode;
}
IM_ASSERT(ancestor_node->Size.x > 0.0f && ancestor_node->Size.y > 0.0f);
DockNodeUpdateHasCentralNodeChild(DockNodeGetRootNode(ancestor_node));
DockNodeTreeUpdatePosSize(ancestor_node, ancestor_node->Pos, ancestor_node->Size, true);
}
@ -16993,11 +17025,12 @@ void ImGui::DebugNodeDockNode(ImGuiDockNode* node, const char* label)
DebugNodeWindow(node->HostWindow, "HostWindow");
DebugNodeWindow(node->VisibleWindow, "VisibleWindow");
BulletText("SelectedTabID: 0x%08X, LastFocusedNodeID: 0x%08X", node->SelectedTabId, node->LastFocusedNodeId);
BulletText("Misc:%s%s%s%s%s",
BulletText("Misc:%s%s%s%s%s%s",
node->IsDockSpace() ? " IsDockSpace" : "",
node->IsCentralNode() ? " IsCentralNode" : "",
is_alive ? " IsAlive" : "", is_active ? " IsActive" : "",
node->WantLockSizeOnce ? " WantLockSizeOnce" : "");
node->WantLockSizeOnce ? " WantLockSizeOnce" : "",
node->HasCentralNodeChild ? " HasCentralNodeChild" : "");
if (TreeNode("flags", "Flags Merged: 0x%04X, Local: 0x%04X, InWindows: 0x%04X, Shared: 0x%04X", node->MergedFlags, node->LocalFlags, node->LocalFlagsInWindows, node->SharedFlags))
{
if (BeginTable("flags", 4))

1
imgui_internal.h
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@ -1377,6 +1377,7 @@ struct IMGUI_API ImGuiDockNode
bool IsFocused :1;
bool HasCloseButton :1; // Provide space for a close button (if any of the docked window has one). Note that button may be hidden on window without one.
bool HasWindowMenuButton :1;
bool HasCentralNodeChild :1;
bool WantCloseAll :1; // Set when closing all tabs at once.
bool WantLockSizeOnce :1;
bool WantMouseMove :1; // After a node extraction we need to transition toward moving the newly created host window