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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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27
imgui_widgets.cpp
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@ -776,30 +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))
{
bool can_extract_dock_node = false;
if (dock_node != NULL && dock_node->VisibleWindow && !(dock_node->VisibleWindow->Flags & ImGuiWindowFlags_NoMove))
{
ImGuiDockNode* root_node = DockNodeGetRootNode(dock_node);
if (root_node->OnlyNodeWithWindows != dock_node || (root_node->CentralNode != NULL))
can_extract_dock_node = true;
}
if (can_extract_dock_node)
{
float threshold_base = g.FontSize;
float threshold_x = (threshold_base * 2.2f);
float threshold_y = (threshold_base * 1.5f);
IM_ASSERT(window->DockNodeAsHost != NULL);
if (g.IO.MouseDragMaxDistanceAbs[0].x > threshold_x || g.IO.MouseDragMaxDistanceAbs[0].y > threshold_y)
DockContextQueueUndockNode(&g, dock_node);
}
else
{
ImVec2 backup_active_click_offset = g.ActiveIdClickOffset + (pos - window->Pos);
StartMouseMovingWindow(window);
g.ActiveIdClickOffset = backup_active_click_offset;
}
}
StartMouseDragFromTitleBar(window, dock_node, true);
return pressed;
}
@ -7048,7 +7025,7 @@ bool ImGui::TabItemEx(ImGuiTabBar* tab_bar, const char* label, bool* p_open,
//float threshold_base = g.IO.ConfigDockingWithShift ? g.FontSize * 0.5f : g.FontSize;
float threshold_x = (threshold_base * 2.2f);
float threshold_y = (threshold_base * 1.5f) + ImClamp((ImFabs(g.IO.MouseDragMaxDistanceAbs[0].x) - threshold_base * 2.0f) * 0.20f, 0.0f, threshold_base * 4.0f);
//GetOverlayDrawList(window)->AddRect(ImVec2(bb.Min.x - threshold_x, bb.Min.y - threshold_y), ImVec2(bb.Max.x + threshold_x, bb.Max.y + threshold_y), IM_COL32_WHITE); // [DEBUG]
//GetForegroundDrawList()->AddRect(ImVec2(bb.Min.x - threshold_x, bb.Min.y - threshold_y), ImVec2(bb.Max.x + threshold_x, bb.Max.y + threshold_y), IM_COL32_WHITE); // [DEBUG]
float distance_from_edge_y = ImMax(bb.Min.y - g.IO.MousePos.y, g.IO.MousePos.y - bb.Max.y);
if (distance_from_edge_y >= threshold_y)