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Docking: Internals: Rename StartMouseDragFromTitleBar() -> StartMouseMovingWindowOrNode(), clarify.

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This commit is contained in:
omar
2019-11-27 15:33:31 +01:00
parent 3096e7a9cd
commit 8d1b82d596
3 changed files with 28 additions and 21 deletions
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45
imgui.cpp
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@@ -3296,26 +3296,32 @@ void ImGui::StartMouseMovingWindow(ImGuiWindow* window)
g.MovingWindow = window;
}
void ImGui::StartMouseDragFromTitleBar(ImGuiWindow* window, ImGuiDockNode* node, bool from_collapse_button)
// We use 'undock_floating_node == false' when dragging from title bar to allow moving groups of floating nodes without undocking them.
// - undock_floating_node == true: when dragging from a floating node within a hierarchy, always undock the node.
// - undock_floating_node == false: when dragging from a floating node within a hierarchy, move root window.
void ImGui::StartMouseMovingWindowOrNode(ImGuiWindow* window, ImGuiDockNode* node, bool undock_floating_node)
{
ImGuiContext& g = *GImGui;
bool can_extract_dock_node = false;
bool can_undock_node = false;
if (node != NULL && node->VisibleWindow && (node->VisibleWindow->Flags & ImGuiWindowFlags_NoMove) == 0)
{
// Can undock if:
// - part of a floating node hierarchy with more than one visible node (if only one is visible, we'll just move the whole hierarchy)
// - part of a dockspace node hierarchy (trivia: undocking from a fixed/central node will create a new node and copy windows)
ImGuiDockNode* root_node = DockNodeGetRootNode(node);
if (root_node->OnlyNodeWithWindows != node || (root_node->CentralNode != NULL))
if (from_collapse_button || root_node->IsDockSpace())
can_extract_dock_node = true;
if (root_node->OnlyNodeWithWindows != node || root_node->CentralNode != NULL)
if (undock_floating_node || root_node->IsDockSpace())
can_undock_node = true;
}
const bool clicked = IsMouseClicked(0);
const bool dragging = IsMouseDragging(0, g.IO.MouseDragThreshold * 1.70f);
if (can_extract_dock_node && dragging)
if (can_undock_node && dragging)
{
DockContextQueueUndockNode(&g, node);
g.ActiveIdClickOffset = g.IO.MouseClickedPos[0] - node->Pos;
}
else if (!can_extract_dock_node && (clicked || dragging) && g.MovingWindow != window)
else if (!can_undock_node && (clicked || dragging) && g.MovingWindow != window)
{
StartMouseMovingWindow(window);
g.ActiveIdClickOffset = g.IO.MouseClickedPos[0] - window->RootWindow->Pos;
@@ -5541,7 +5547,7 @@ void ImGui::RenderWindowDecorations(ImGuiWindow* window, const ImRect& title_bar
if (ButtonBehavior(r, window->GetID("#UNHIDE"), &hovered, &held, ImGuiButtonFlags_FlattenChildren))
node->WantHiddenTabBarToggle = true;
else if (held && IsMouseDragging(0))
StartMouseDragFromTitleBar(window, node, true);
StartMouseMovingWindowOrNode(window, node, true);
// FIXME-DOCK: Ideally we'd use ImGuiCol_TitleBgActive/ImGuiCol_TitleBg here, but neither is guaranteed to be visible enough at this sort of size..
ImU32 col = GetColorU32(((held && hovered) || (node->IsFocused && !hovered)) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button);
@@ -12188,18 +12194,19 @@ static void ImGui::DockNodeUpdateVisibleFlagAndInactiveChilds(ImGuiDockNode* nod
remove |= node_was_active && (window->LastFrameActive + 1 < g.FrameCount);
remove |= node_was_active && (node->WantCloseAll || node->WantCloseTabID == window->ID) && window->HasCloseButton && !(window->Flags & ImGuiWindowFlags_UnsavedDocument); // Submit all _expected_ closure from last frame
remove |= (window->DockTabWantClose);
if (!remove)
continue;
window->DockTabWantClose = false;
if (node->Windows.Size == 1 && !node->IsCentralNode())
if (remove)
{
DockNodeHideHostWindow(node);
node->State = ImGuiDockNodeState_HostWindowHiddenBecauseSingleWindow;
DockNodeRemoveWindow(node, window, node->ID); // Will delete the node so it'll be invalid on return
return;
window->DockTabWantClose = false;
if (node->Windows.Size == 1 && !node->IsCentralNode())
{
DockNodeHideHostWindow(node);
node->State = ImGuiDockNodeState_HostWindowHiddenBecauseSingleWindow;
DockNodeRemoveWindow(node, window, node->ID); // Will delete the node so it'll be invalid on return
return;
}
DockNodeRemoveWindow(node, window, node->ID);
window_n--;
}
DockNodeRemoveWindow(node, window, node->ID);
window_n--;
}
// Auto-hide tab bar option
@@ -12798,7 +12805,7 @@ static void ImGui::DockNodeUpdateTabBar(ImGuiDockNode* node, ImGuiWindow* host_w
// Forward moving request to selected window
if (ImGuiTabItem* tab = TabBarFindTabByID(tab_bar, tab_bar->SelectedTabId))
StartMouseDragFromTitleBar(tab->Window, node, false);
StartMouseMovingWindowOrNode(tab->Window, node, false);
}
}

2
imgui_internal.h
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@@ -1805,7 +1805,7 @@ namespace ImGui
// NewFrame
IMGUI_API void UpdateHoveredWindowAndCaptureFlags();
IMGUI_API void StartMouseMovingWindow(ImGuiWindow* window);
IMGUI_API void StartMouseDragFromTitleBar(ImGuiWindow* window, ImGuiDockNode* node, bool from_collapse_button);
IMGUI_API void StartMouseMovingWindowOrNode(ImGuiWindow* window, ImGuiDockNode* node, bool undock_floating_node);
IMGUI_API void UpdateMouseMovingWindowNewFrame();
IMGUI_API void UpdateMouseMovingWindowEndFrame();

2
imgui_widgets.cpp
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@@ -776,7 +776,7 @@ bool ImGui::CollapseButton(ImGuiID id, const ImVec2& pos, ImGuiDockNode* dock_no
// Switch to moving the window after mouse is moved beyond the initial drag threshold
if (IsItemActive() && IsMouseDragging(0))
StartMouseDragFromTitleBar(window, dock_node, true);
StartMouseMovingWindowOrNode(window, dock_node, true);
return pressed;
}