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Docking: Fixed single-frame node pos/size inconsistencies when window stop or start being submitted.

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Fix 718e15c7d while preserving its intended property. Tested by "docking_window_appearing_layout". (#2109)
This commit is contained in:
ocornut
2021-12-02 18:39:52 +01:00
parent 6afcfe3442
commit 8733ca49b0
3 changed files with 24 additions and 20 deletions
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1
docs/CHANGELOG.txt
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@@ -159,6 +159,7 @@ Docking+Viewports Branch:
- Docking: Fixed a bug undocking windows docked into a non-visible or _KeepAliveOnly dockspace
when unrelated windows submitted before the dockspace have dynamic visibility. (#4757)
- Docking: Fixed incorrectly rounded tab bars for dock node that are not at the top of their dock tree.
- Docking: Fixed single-frame node pos/size inconsistencies when window stop or start being submitted.
- Viewports: Made it possible to explicitly assign ImGuiWindowClass::ParentViewportId to 0 in order
to ensure a window is not parented. Previously this would use the global default (which might be 0,
but not always as it would depend on io.ConfigViewportsNoDefaultParent). (#3152, #2871)

41
imgui.cpp
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@@ -12908,7 +12908,7 @@ namespace ImGui
// ImGuiDockNode tree manipulations
static void DockNodeTreeSplit(ImGuiContext* ctx, ImGuiDockNode* parent_node, ImGuiAxis split_axis, int split_first_child, float split_ratio, ImGuiDockNode* new_node);
static void DockNodeTreeMerge(ImGuiContext* ctx, ImGuiDockNode* parent_node, ImGuiDockNode* merge_lead_child);
static void DockNodeTreeUpdatePosSize(ImGuiDockNode* node, ImVec2 pos, ImVec2 size, bool only_write_to_marked_nodes = false);
static void DockNodeTreeUpdatePosSize(ImGuiDockNode* node, ImVec2 pos, ImVec2 size, ImGuiDockNode* only_write_to_single_node = NULL);
static void DockNodeTreeUpdateSplitter(ImGuiDockNode* node);
static ImGuiDockNode* DockNodeTreeFindVisibleNodeByPos(ImGuiDockNode* node, ImVec2 pos);
static ImGuiDockNode* DockNodeTreeFindFallbackLeafNode(ImGuiDockNode* node);
@@ -13604,7 +13604,6 @@ ImGuiDockNode::ImGuiDockNode(ImGuiID id)
IsVisible = true;
IsFocused = HasCloseButton = HasWindowMenuButton = HasCentralNodeChild = false;
WantCloseAll = WantLockSizeOnce = WantMouseMove = WantHiddenTabBarUpdate = WantHiddenTabBarToggle = false;
MarkedForPosSizeWrite = false;
}
ImGuiDockNode::~ImGuiDockNode()
@@ -14045,7 +14044,6 @@ static void ImGui::DockNodeUpdate(ImGuiDockNode* node)
ImGuiContext& g = *GImGui;
IM_ASSERT(node->LastFrameActive != g.FrameCount);
node->LastFrameAlive = g.FrameCount;
node->MarkedForPosSizeWrite = false;
node->CentralNode = node->OnlyNodeWithWindows = NULL;
if (node->IsRootNode())
@@ -15153,11 +15151,11 @@ void ImGui::DockNodeTreeMerge(ImGuiContext* ctx, ImGuiDockNode* parent_node, ImG
// Update Pos/Size for a node hierarchy (don't affect child Windows yet)
// (Depth-first, Pre-Order)
void ImGui::DockNodeTreeUpdatePosSize(ImGuiDockNode* node, ImVec2 pos, ImVec2 size, bool only_write_to_marked_nodes)
void ImGui::DockNodeTreeUpdatePosSize(ImGuiDockNode* node, ImVec2 pos, ImVec2 size, ImGuiDockNode* only_write_to_single_node)
{
// During the regular dock node update we write to all nodes.
// 'only_write_to_marked_nodes' is only set when turning a node visible mid-frame and we need its size right-away.
const bool write_to_node = (only_write_to_marked_nodes == false) || (node->MarkedForPosSizeWrite);
// 'only_write_to_single_node' is only set when turning a node visible mid-frame and we need its size right-away.
const bool write_to_node = only_write_to_single_node == NULL || only_write_to_single_node == node;
if (write_to_node)
{
node->Pos = pos;
@@ -15171,15 +15169,21 @@ void ImGui::DockNodeTreeUpdatePosSize(ImGuiDockNode* node, ImVec2 pos, ImVec2 si
ImGuiDockNode* child_1 = node->ChildNodes[1];
ImVec2 child_0_pos = pos, child_1_pos = pos;
ImVec2 child_0_size = size, child_1_size = size;
if (child_0->IsVisible && child_1->IsVisible)
const bool child_0_is_toward_single_node = (only_write_to_single_node != NULL && DockNodeIsInHierarchyOf(only_write_to_single_node, child_0));
const bool child_1_is_toward_single_node = (only_write_to_single_node != NULL && DockNodeIsInHierarchyOf(only_write_to_single_node, child_1));
const bool child_0_is_or_will_be_visible = child_0->IsVisible || child_0_is_toward_single_node;
const bool child_1_is_or_will_be_visible = child_1->IsVisible || child_1_is_toward_single_node;
if (child_0_is_or_will_be_visible && child_1_is_or_will_be_visible)
{
ImGuiContext& g = *GImGui;
const float spacing = DOCKING_SPLITTER_SIZE;
const ImGuiAxis axis = (ImGuiAxis)node->SplitAxis;
const float size_avail = ImMax(size[axis] - spacing, 0.0f);
// Size allocation policy
// 1) The first 0..WindowMinSize[axis]*2 are allocated evenly to both windows.
ImGuiContext& g = *GImGui;
const float size_min_each = ImFloor(ImMin(size_avail, g.Style.WindowMinSize[axis] * 2.0f) * 0.5f);
// FIXME: Blocks 2) and 3) are essentially doing nearly the same thing.
@@ -15230,11 +15234,15 @@ void ImGui::DockNodeTreeUpdatePosSize(ImGuiDockNode* node, ImVec2 pos, ImVec2 si
child_1_pos[axis] += spacing + child_0_size[axis];
}
child_0->WantLockSizeOnce = child_1->WantLockSizeOnce = false;
if (child_0->IsVisible)
if (only_write_to_single_node == NULL)
child_0->WantLockSizeOnce = child_1->WantLockSizeOnce = false;
const bool child_0_recurse = only_write_to_single_node ? child_0_is_toward_single_node : child_0->IsVisible;
const bool child_1_recurse = only_write_to_single_node ? child_1_is_toward_single_node : child_1->IsVisible;
if (child_0_recurse)
DockNodeTreeUpdatePosSize(child_0, child_0_pos, child_0_size);
if (child_1->IsVisible)
if (child_1_recurse)
DockNodeTreeUpdatePosSize(child_1, child_1_pos, child_1_size);
}
@@ -16048,16 +16056,11 @@ static ImGuiDockNode* ImGui::DockContextBindNodeToWindow(ImGuiContext* ctx, ImGu
if (!node->IsVisible)
{
ImGuiDockNode* ancestor_node = node;
while (!ancestor_node->IsVisible)
{
ancestor_node->IsVisible = true;
ancestor_node->MarkedForPosSizeWrite = true;
if (ancestor_node->ParentNode)
ancestor_node = ancestor_node->ParentNode;
}
while (!ancestor_node->IsVisible && ancestor_node->ParentNode)
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);
DockNodeTreeUpdatePosSize(ancestor_node, ancestor_node->Pos, ancestor_node->Size, node);
}
// Add window to node

2
imgui_internal.h
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@@ -1457,7 +1457,6 @@ struct IMGUI_API ImGuiDockNode
bool WantMouseMove :1; // After a node extraction we need to transition toward moving the newly created host window
bool WantHiddenTabBarUpdate :1;
bool WantHiddenTabBarToggle :1;
bool MarkedForPosSizeWrite :1; // Update by DockNodeTreeUpdatePosSize() write-filtering
ImGuiDockNode(ImGuiID id);
~ImGuiDockNode();
@@ -2837,6 +2836,7 @@ namespace ImGui
IMGUI_API bool DockNodeBeginAmendTabBar(ImGuiDockNode* node);
IMGUI_API void DockNodeEndAmendTabBar();
inline ImGuiDockNode* DockNodeGetRootNode(ImGuiDockNode* node) { while (node->ParentNode) node = node->ParentNode; return node; }
inline bool DockNodeIsInHierarchyOf(ImGuiDockNode* node, ImGuiDockNode* parent) { while (node) { if (node == parent) return true; node = node->ParentNode; } return false; }
inline int DockNodeGetDepth(const ImGuiDockNode* node) { int depth = 0; while (node->ParentNode) { node = node->ParentNode; depth++; } return depth; }
inline ImGuiID DockNodeGetWindowMenuButtonId(const ImGuiDockNode* node) { return ImHashStr("#COLLAPSE", 0, node->ID); }
inline ImGuiDockNode* GetWindowDockNode() { ImGuiContext& g = *GImGui; return g.CurrentWindow->DockNode; }