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Viewports: made standalone modals appear in taskbar + new window perform z-check before merging in main host viewport. (#3511, #1542)

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This should fix a good amount of "lost modal" problems, however it is still possible to loose a modal in a host viewport if secondary viewports are configured as children above the host.
This commit is contained in:
ocornut 2020-11-19 16:07:07 +01:00
parent b2a91dc390
commit cecf6b4209
2 changed files with 11 additions and 7 deletions
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16
imgui.cpp
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@ -6227,10 +6227,13 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
// Update common viewport flags
const ImGuiViewportFlags viewport_flags_to_clear = ImGuiViewportFlags_TopMost | ImGuiViewportFlags_NoTaskBarIcon | ImGuiViewportFlags_NoDecoration | ImGuiViewportFlags_NoRendererClear;
ImGuiViewportFlags viewport_flags = window->Viewport->Flags & ~viewport_flags_to_clear;
const bool is_short_lived_floating_window = (flags & (ImGuiWindowFlags_ChildMenu | ImGuiWindowFlags_Tooltip | ImGuiWindowFlags_Popup)) != 0;
const bool is_modal = (flags & ImGuiWindowFlags_Modal) != 0;
const bool is_short_lived_floating_window = (flags & (ImGuiWindowFlags_ChildMenu | ImGuiWindowFlags_Tooltip | ImGuiWindowFlags_Popup)) != 0 && !is_modal;
if (flags & ImGuiWindowFlags_Tooltip)
viewport_flags |= ImGuiViewportFlags_TopMost;
if (g.IO.ConfigViewportsNoTaskBarIcon || is_short_lived_floating_window)
//if (flags & ImGuiWindowFlags_Modal)
// viewport_flags |= ImGuiViewportFlags_TopMost; // Not correct because other popups can be stack above a modal?
if ((g.IO.ConfigViewportsNoTaskBarIcon || is_short_lived_floating_window) && !is_modal)
viewport_flags |= ImGuiViewportFlags_NoTaskBarIcon;
if (g.IO.ConfigViewportsNoDecoration || is_short_lived_floating_window)
viewport_flags |= ImGuiViewportFlags_NoDecoration;
@ -6239,7 +6242,7 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
// won't steal the OS focus away from their parent window (which may be reflected in OS the title bar decoration).
// Setting _NoFocusOnClick would technically prevent us from bringing back to front in case they are being covered by an OS window from a different app,
// but it shouldn't be much of a problem considering those are already popups that are closed when clicking elsewhere.
if (is_short_lived_floating_window && (flags & ImGuiWindowFlags_Modal) == 0)
if (is_short_lived_floating_window && !is_modal)
viewport_flags |= ImGuiViewportFlags_NoFocusOnAppearing | ImGuiViewportFlags_NoFocusOnClick;
// We can overwrite viewport flags using ImGuiWindowClass (advanced users)
@ -11426,10 +11429,11 @@ static void ImGui::UpdateSelectWindowViewport(ImGuiWindow* window)
UpdateTryMergeWindowIntoHostViewports(window);
}
// Fallback to default viewport
// Fallback: merge in default viewport if z-order matches, otherwise create a new viewport
if (window->Viewport == NULL)
window->Viewport = main_viewport;
if (!UpdateTryMergeWindowIntoHostViewport(window, main_viewport))
window->Viewport = AddUpdateViewport(window, window->ID, window->Pos, window->Size, ImGuiViewportFlags_None);
// Mark window as allowed to protrude outside of its viewport and into the current monitor
if (!lock_viewport)
{

2
imgui.h
View File

@ -1609,7 +1609,7 @@ struct ImGuiIO
// Viewport options (when ImGuiConfigFlags_ViewportsEnable is set)
bool ConfigViewportsNoAutoMerge; // = false; // Set to make all floating imgui windows always create their own viewport. Otherwise, they are merged into the main host viewports when overlapping it. May also set ImGuiViewportFlags_NoAutoMerge on individual viewport.
bool ConfigViewportsNoTaskBarIcon; // = false // Disable default OS task bar icon flag for secondary viewports. When a viewport doesn't want a task bar icon, ImGuiViewportFlags_NoTaskBarIcon will be set on it.
bool ConfigViewportsNoDecoration; // = true // [BETA] Disable default OS window decoration flag for secondary viewports. When a viewport doesn't want window decorations, ImGuiViewportFlags_NoDecoration will be set on it. Enabling decoration can create subsequent issues at OS levels (e.g. minimum window size).
bool ConfigViewportsNoDecoration; // = true // Disable default OS window decoration flag for secondary viewports. When a viewport doesn't want window decorations, ImGuiViewportFlags_NoDecoration will be set on it. Enabling decoration can create subsequent issues at OS levels (e.g. minimum window size).
bool ConfigViewportsNoDefaultParent; // = false // Disable default OS parenting to main viewport for secondary viewports. By default, viewports are marked with ParentViewportId = <main_viewport>, expecting the platform backend to setup a parent/child relationship between the OS windows (some backend may ignore this). Set to true if you want the default to be 0, then all viewports will be top-level OS windows.
// Miscellaneous options