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Docking: Demo: Fixed docking document window into parent window. (#2286)

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This commit is contained in:
omar 2019-01-16 14:43:27 +01:00
parent 8a45c56c2c
commit 2f9bae140b
1 changed files with 27 additions and 12 deletions
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37
imgui_demo.cpp
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@ -4205,24 +4205,32 @@ void ShowExampleAppDocuments(bool* p_open)
{ {
static ExampleAppDocuments app; static ExampleAppDocuments app;
if (!ImGui::Begin("Example: Documents", p_open, ImGuiWindowFlags_MenuBar))
{
ImGui::End();
return;
}
// Options // Options
enum Target enum Target
{ {
Target_None, Target_None,
Target_Tab, // Create document as a local tab into a local tab bar Target_Tab, // Create documents as local tab into a local tab bar
Target_Window // Create document as a regular window Target_DockspaceAndWindow // Create documents as regular windows, and create an embedded dockspace
}; };
static Target opt_target = Target_Tab; static Target opt_target = Target_Tab;
static bool opt_reorderable = true; static bool opt_reorderable = true;
static ImGuiTabBarFlags opt_fitting_flags = ImGuiTabBarFlags_FittingPolicyDefault_; static ImGuiTabBarFlags opt_fitting_flags = ImGuiTabBarFlags_FittingPolicyDefault_;
// Menu // When (opt_target == Target_DockspaceAndWindow) there is the possibily that one of our child Document window (e.g. "Eggplant")
// that we emit gets docked into the same spot as the parent window ("Example: Documents").
// This would create a problematic feedback loop because selecting the "Eggplant" tab would make the "Example: Documents" tab
// not visible, which in turn would stop submitting the "Eggplant" window.
// We avoid this problem by submitting our documents window even if our parent window is not currently visible.
// Another solution may be to make the "Example: Documents" window use the ImGuiWindowFlags_NoDocking.
bool window_contents_visible = ImGui::Begin("Example: Documents", p_open, ImGuiWindowFlags_MenuBar);
if (!window_contents_visible && opt_target != Target_DockspaceAndWindow)
{
ImGui::End();
return;
}
// Menu Bar
if (ImGui::BeginMenuBar()) if (ImGui::BeginMenuBar())
{ {
if (ImGui::BeginMenu("File")) if (ImGui::BeginMenu("File"))
@ -4268,7 +4276,7 @@ void ShowExampleAppDocuments(bool* p_open)
ImGui::PopItemWidth(); ImGui::PopItemWidth();
bool redock_all = false; bool redock_all = false;
if (opt_target == Target_Tab) { ImGui::SameLine(); ImGui::Checkbox("Reorderable Tabs", &opt_reorderable); } if (opt_target == Target_Tab) { ImGui::SameLine(); ImGui::Checkbox("Reorderable Tabs", &opt_reorderable); }
if (opt_target == Target_Window) { ImGui::SameLine(); redock_all = ImGui::Button("Redock all"); } if (opt_target == Target_DockspaceAndWindow) { ImGui::SameLine(); redock_all = ImGui::Button("Redock all"); }
ImGui::Separator(); ImGui::Separator();
@ -4313,7 +4321,7 @@ void ShowExampleAppDocuments(bool* p_open)
ImGui::EndTabBar(); ImGui::EndTabBar();
} }
} }
else if (opt_target == Target_Window) else if (opt_target == Target_DockspaceAndWindow)
{ {
if (ImGui::GetIO().ConfigFlags & ImGuiConfigFlags_DockingEnable) if (ImGui::GetIO().ConfigFlags & ImGuiConfigFlags_DockingEnable)
{ {
@ -4357,6 +4365,13 @@ void ShowExampleAppDocuments(bool* p_open)
} }
} }
// Early out other contents
if (!window_contents_visible)
{
ImGui::End();
return;
}
// Update closing queue // Update closing queue
static ImVector<MyDocument*> close_queue; static ImVector<MyDocument*> close_queue;
if (close_queue.empty()) if (close_queue.empty())