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Docking: Making it possible to undock a node by clicking on the tab bar / title bar for the node. (#2645, #2109)

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This commit is contained in:
omar
2019-07-17 13:55:00 -07:00
parent 56e10f1c35
commit bb2aa5e770
3 changed files with 41 additions and 32 deletions
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45
imgui.cpp
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@ -3403,6 +3403,32 @@ void ImGui::StartMouseMovingWindow(ImGuiWindow* window)
g.MovingWindow = window;
}
void ImGui::StartMouseDragFromTitleBar(ImGuiWindow* window, ImGuiDockNode* node, bool from_collapse_button)
{
ImGuiContext& g = *GImGui;
bool can_extract_dock_node = false;
if (node != NULL && node->VisibleWindow && (node->VisibleWindow->Flags & ImGuiWindowFlags_NoMove) == 0)
{
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;
}
const bool clicked = IsMouseClicked(0);
const bool dragging = IsMouseDragging(0, g.IO.MouseDragThreshold * 1.70f);
if (can_extract_dock_node && dragging)
{
DockContextQueueUndockNode(&g, node);
g.ActiveIdClickOffset = g.IO.MouseClickedPos[0] - node->Pos;
}
else if (!can_extract_dock_node && (clicked || dragging) && g.MovingWindow != window)
{
StartMouseMovingWindow(window);
g.ActiveIdClickOffset = g.IO.MouseClickedPos[0] - window->RootWindow->Pos;
}
}
// Handle mouse moving window
// Note: moving window with the navigation keys (Square + d-pad / CTRL+TAB + Arrows) are processed in NavUpdateWindowing()
void ImGui::UpdateMouseMovingWindowNewFrame()
@ -12802,15 +12828,20 @@ static void ImGui::DockNodeUpdateTabBar(ImGuiDockNode* node, ImGuiWindow* host_w
}
// When clicking on the title bar outside of tabs, we still focus the selected tab for that node
if (g.HoveredWindow == host_window && g.HoveredId == 0 && IsMouseHoveringRect(title_bar_rect.Min, title_bar_rect.Max))
// FIXME: TabItem use AllowItemOverlap so we manually perform a more specific test for now (hovered || held)
ImGuiID title_bar_id = host_window->GetID("#TITLEBAR");
if (g.HoveredId == 0 || g.HoveredId == title_bar_id || g.ActiveId == title_bar_id)
{
if (IsMouseClicked(0))
bool held;
ButtonBehavior(title_bar_rect, title_bar_id, NULL, &held);
if (held)
{
focus_tab_id = tab_bar->SelectedTabId;
if (IsMouseClicked(0))
focus_tab_id = tab_bar->SelectedTabId;
// Forward moving request to selected window
if (ImGuiTabItem* tab = TabBarFindTabByID(tab_bar, focus_tab_id))
StartMouseMovingWindow(tab->Window);
if (ImGuiTabItem* tab = TabBarFindTabByID(tab_bar, tab_bar->SelectedTabId))
StartMouseDragFromTitleBar(tab->Window, node, false);
}
}
@ -13418,7 +13449,7 @@ void ImGui::DockNodeTreeUpdateSplitter(ImGuiDockNode* node)
/*
// [DEBUG] Render limits
ImDrawList* draw_list = node->HostWindow ? GetOverlayDrawList(node->HostWindow) : GetOverlayDrawList((ImGuiViewportP*)GetMainViewport());
ImDrawList* draw_list = node->HostWindow ? GetForegroundDrawList(node->HostWindow) : GetForegroundDrawList((ImGuiViewportP*)GetMainViewport());
for (int n = 0; n < 2; n++)
if (axis == ImGuiAxis_X)
draw_list->AddLine(ImVec2(resize_limits[n], node->ChildNodes[n]->Pos.y), ImVec2(resize_limits[n], node->ChildNodes[n]->Pos.y + node->ChildNodes[n]->Size.y), IM_COL32(255, 0, 255, 255), 3.0f);
@ -13446,7 +13477,7 @@ void ImGui::DockNodeTreeUpdateSplitter(ImGuiDockNode* node)
for (int touching_node_n = 0; touching_node_n < touching_nodes[side_n].Size; touching_node_n++)
{
ImGuiDockNode* touching_node = touching_nodes[side_n][touching_node_n];
//ImDrawList* draw_list = node->HostWindow ? GetOverlayDrawList(node->HostWindow) : GetOverlayDrawList((ImGuiViewportP*)GetMainViewport());
//ImDrawList* draw_list = node->HostWindow ? GetForegroundDrawList(node->HostWindow) : GetForegroundDrawList((ImGuiViewportP*)GetMainViewport());
//draw_list->AddRect(touching_node->Pos, touching_node->Pos + touching_node->Size, IM_COL32(255, 128, 0, 255));
while (touching_node->ParentNode != node)
{