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Docking: Updating LastFrameActive earlier in Begin() because BeginDocked() will need to use it. Extracted some code into a DockNodeIsDropAllowedOne() function. Comments.

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This commit is contained in:
omar 2018-09-10 15:40:05 +02:00
parent a68c98bb67
commit dcef0c0237
2 changed files with 41 additions and 22 deletions
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60
imgui.cpp
View File

@ -3395,6 +3395,7 @@ void ImGui::NewFrame()
}
// Closing the focused window restore focus to the first active root window in descending z-order
// FIXME: Because z-order and nav-order are correlated, this will focus the wrong window if we are part of a hierarchy with NoBringToFrontOnFocus flag.
if (g.NavWindow && !g.NavWindow->WasActive)
FocusFrontMostActiveWindowIgnoringOne(NULL);
@ -3674,6 +3675,9 @@ void ImGui::EndFrame()
g.CurrentWindow->Active = false;
End();
// Docking
DockContextEndFrame(g.DockContext);
// Draw modal whitening background on _other_ viewports than the one the modal or target are on
ImGuiWindow* modal_window = GetFrontMostPopupModal();
const bool dim_bg_for_modal = (modal_window != NULL);
@ -4862,17 +4866,6 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
const int current_frame = g.FrameCount;
const bool first_begin_of_the_frame = (window->LastFrameActive != current_frame);
if (first_begin_of_the_frame)
{
window->FlagsPreviousFrame = window->Flags;
window->Flags = (ImGuiWindowFlags)flags;
window->BeginOrderWithinParent = 0;
window->BeginOrderWithinContext = g.WindowsActiveCount++;
}
else
{
flags = window->Flags;
}
// Update the Appearing flag
bool window_just_activated_by_user = (window->LastFrameActive < current_frame - 1); // Not using !WasActive because the implicit "Debug" window would always toggle off->on
@ -4887,6 +4880,20 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
if (window->Appearing)
SetWindowConditionAllowFlags(window, ImGuiCond_Appearing, true);
// Update Flags, LastFrameActive, BeginOrderXXX fields
if (first_begin_of_the_frame)
{
window->FlagsPreviousFrame = window->Flags;
window->Flags = (ImGuiWindowFlags)flags;
window->LastFrameActive = current_frame;
window->BeginOrderWithinParent = 0;
window->BeginOrderWithinContext = g.WindowsActiveCount++;
}
else
{
flags = window->Flags;
}
// Docking
// (NB: during the frame dock nodes are created, it is possible that (window->DockIsActive == false) even though (window->DockNode->Windows.Size > 1)
IM_ASSERT(window->DockNode == NULL || window->DockNodeAsHost == NULL); // Cannot be both
@ -4973,7 +4980,6 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
window->Active = true;
window->HasCloseButton = (p_open != NULL);
window->ClipRect = ImVec4(-FLT_MAX,-FLT_MAX,+FLT_MAX,+FLT_MAX);
window->LastFrameActive = current_frame;
window->IDStack.resize(1);
// UPDATE CONTENTS SIZE, UPDATE HIDDEN STATUS
@ -7611,6 +7617,7 @@ static void ImGui::UpdateSelectWindowViewport(ImGuiWindow* window)
}
else if ((flags & ImGuiWindowFlags_DockNodeHost) && (window->Appearing))
{
// Mark so the dock host can be on its own viewport
window->ViewportAllowPlatformMonitorExtend = FindPlatformMonitorForRect(window->Rect());
}
if (window->ViewportTrySplit && window->ViewportAllowPlatformMonitorExtend < 0)
@ -9709,6 +9716,10 @@ void ImGui::DockContextNewFrameUpdateDocking(ImGuiDockContext* ctx)
DockNodeUpdate(node);
}
void ImGui::DockContextEndFrame(ImGuiDockContext* ctx)
{
(void)ctx;
}
static ImGuiDockNode* ImGui::DockContextFindNodeByID(ImGuiDockContext* ctx, ImGuiID id)
{
@ -9950,7 +9961,7 @@ void ImGui::DockContextProcessDock(ImGuiDockContext* ctx, ImGuiDockRequest* req)
if (payload_node != NULL)
{
// Transfer full payload node (with 1+ child windows or child nodes)
// FIXME-DOCKING: Transition persistent DockId for all non-active windows?
// FIXME-DOCK: Transition persistent DockId for all non-active windows?
if (payload_node->IsParent())
{
if (target_node->Windows.Size > 0)
@ -10277,6 +10288,7 @@ static void ImGui::DockNodeUpdateVisibleFlag(ImGuiDockNode* node)
static void ImGui::DockNodeUpdate(ImGuiDockNode* node)
{
ImGuiContext& g = *GImGui;
IM_ASSERT(node->LastFrameActive != g.FrameCount);
if (node->IsRootNode())
{
@ -10641,6 +10653,18 @@ static void ImGui::DockNodeUpdateTabBar(ImGuiDockNode* node, ImGuiWindow* host_w
}
}
static bool DockNodeIsDropAllowedOne(ImGuiWindow* payload, ImGuiWindow* host_window)
{
if ((host_window->Flags & ImGuiWindowFlags_DockNodeHost) && host_window->DockNodeAsHost->IsExplicitRoot && payload->BeginOrderWithinContext < host_window->BeginOrderWithinContext)
return false;
ImGuiID host_user_type_id = host_window->DockNodeAsHost ? host_window->DockNodeAsHost->UserTypeIdFilter : host_window->UserTypeId;
if (payload->UserTypeId != host_user_type_id)
return false;
return true;
}
static bool ImGui::DockNodeIsDropAllowed(ImGuiWindow* host_window, ImGuiWindow* root_payload)
{
if (root_payload->DockNodeAsHost && root_payload->DockNodeAsHost->IsParent())
@ -10650,13 +10674,7 @@ static bool ImGui::DockNodeIsDropAllowed(ImGuiWindow* host_window, ImGuiWindow*
for (int payload_n = 0; payload_n < payload_count; payload_n++)
{
ImGuiWindow* payload = root_payload->DockNodeAsHost ? root_payload->DockNodeAsHost->Windows[payload_n] : root_payload;
if ((host_window->Flags & ImGuiWindowFlags_DockNodeHost) && payload->BeginOrderWithinContext < host_window->BeginOrderWithinContext)
continue;
ImGuiID host_user_type_id = host_window->DockNodeAsHost ? host_window->DockNodeAsHost->UserTypeIdFilter : host_window->UserTypeId;
if (payload->UserTypeId != host_user_type_id)
return false;
if (DockNodeIsDropAllowedOne(payload, host_window))
return true;
}
return false;
@ -10871,7 +10889,7 @@ static void ImGui::DockNodePreviewDockRender(ImGuiWindow* host_window, ImGuiDock
{
// Calculate the tab bounding box for each payload window
ImGuiWindow* payload = root_payload->DockNodeAsHost ? root_payload->DockNodeAsHost->TabBar->Tabs[payload_n].Window : root_payload;
if ((host_window->Flags & ImGuiWindowFlags_DockNodeHost) && payload->BeginOrderWithinContext < host_window->BeginOrderWithinContext)
if (!DockNodeIsDropAllowedOne(payload, host_window))
continue;
ImVec2 tab_size = TabItemCalcSize(payload->Name, payload->HasCloseButton);

1
imgui_internal.h
View File

@ -1464,6 +1464,7 @@ namespace ImGui
IMGUI_API void DockContextRebuild(ImGuiDockContext* ctx);
IMGUI_API void DockContextNewFrameUpdateUndocking(ImGuiDockContext* ctx);
IMGUI_API void DockContextNewFrameUpdateDocking(ImGuiDockContext* ctx);
IMGUI_API void DockContextEndFrame(ImGuiDockContext* ctx);
IMGUI_API void DockContextQueueUndock(ImGuiDockContext* ctx, ImGuiWindow* window);
IMGUI_API void BeginDocked(ImGuiWindow* window, bool* p_open);
IMGUI_API void BeginAsDockableDragDropSource(ImGuiWindow* window);