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Viewport: Various sanity fixes. Popup always inherit viewport from their parent for now. (#1542)

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features/sdl_renderer3_multiviewports
omar ago%!(EXTRA string=8 years)
parent 3637193556
commit 25fd9d6132
1 changed files with 26 additions and 25 deletions
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  1. 49
      imgui.cpp

49
imgui.cpp
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@ -4479,9 +4479,9 @@ static void ImGui::ResizeViewportTranslateWindows(int viewport_idx_min, int view
static void ImGui::ResizeViewport(ImGuiViewport* viewport, const ImVec2& size)
{
ImGuiContext& g = *GImGui;
// We defer translating windows to the beginning of the frame.
// Our viewport system already works with fully overlapped viewports, it's only certain user interactions that don't and they can't be performed while resizing.
ImGuiContext& g = *GImGui;
viewport->Size = size;
if (viewport == g.Viewports[0])
{
@ -4492,6 +4492,8 @@ static void ImGui::ResizeViewport(ImGuiViewport* viewport, const ImVec2& size)
void ImGui::SetCurrentViewport(ImGuiViewport* viewport)
{
// Notify platform interface of viewport changes
// FIXME-DPI: This is only currently used for experimenting with handling of multiple DPI
ImGuiContext& g = *GImGui;
if (g.CurrentViewport == viewport)
return;
@ -5902,6 +5904,7 @@ static void ImGui::UpdateWindowViewport(ImGuiWindow* window, bool window_pos_set
{
ImGuiContext& g = *GImGui;
ImGuiWindowFlags flags = window->Flags;
(void)window_pos_set_by_api;
// Restore main viewport if multi viewports are not supported by the back-end
ImGuiViewport* main_viewport = g.Viewports[0];
@ -5917,16 +5920,16 @@ static void ImGui::UpdateWindowViewport(ImGuiWindow* window, bool window_pos_set
bool created_viewport = false;
ImGuiViewport* prev_viewport = window->Viewport;
if (g.NextWindowData.ViewportCond)
{
window->Viewport = prev_viewport = FindViewportByID(g.NextWindowData.ViewportId);
// Code explicitly request a viewport
window->Viewport = FindViewportByID(g.NextWindowData.ViewportId);
window->ViewportId = g.NextWindowData.ViewportId; // Store ID even if Viewport isn't resolved.
}
else if (flags & ImGuiWindowFlags_ChildWindow)// || (flags & ImGuiWindowFlags_Popup))
else if (flags & ImGuiWindowFlags_ChildWindow)
{
IM_ASSERT(window->ParentWindow);
window->Viewport = prev_viewport = window->ParentWindow->Viewport;
window->Viewport = window->ParentWindow->Viewport;
}
else if (window_follow_mouse_viewport && IsMousePosValid())
{
@ -5938,7 +5941,7 @@ static void ImGui::UpdateWindowViewport(ImGuiWindow* window, bool window_pos_set
ImGuiViewportFlags viewport_flags = ImGuiViewportFlags_NoDecoration | ImGuiViewportFlags_NoFocusOnAppearing | ImGuiViewportFlags_NoInputs;
ImGuiViewport* viewport = Viewport(window->ID, viewport_flags, os_desktop_pos, window->Size);
window->Flags |= ImGuiWindowFlags_FullViewport | ImGuiWindowFlags_NoBringToFrontOnFocus;
window->Viewport = prev_viewport = viewport;
window->Viewport = viewport;
created_viewport = true;
// Preserve relative mouse position so docking title bar test stays valid mid-frame (since it isn't latched)
@ -5950,20 +5953,24 @@ static void ImGui::UpdateWindowViewport(ImGuiWindow* window, bool window_pos_set
// This is so we don't require of the multi-viewport windowing back-end to preserve mouse buttons after a window closure, making it easier to implement them.
bool preserve_temporary_viewport = g.MovingWindow && g.MovingWindow->RootWindow == window && (window->Viewport->Flags & ImGuiWindowFlags_FullViewport);
if (!preserve_temporary_viewport)
window->Viewport = prev_viewport = g.MouseViewport;
window->Viewport = g.MouseViewport;
}
}
else if (g.NavWindow != NULL && g.NavWindow != window && (flags & ImGuiWindowFlags_Tooltip))
{
window->Viewport = prev_viewport = g.NavWindow->Viewport;
window->Viewport = g.NavWindow->Viewport;
}
// Appearing popups grabs the viewport from their parent window
// Appearing popups reset their viewport so they can inherit again
const bool window_just_appearing_after_hidden_for_resize = (window->HiddenFrames == 1);
if ((flags & ImGuiWindowFlags_Popup) && !window_pos_set_by_api && window_just_appearing_after_hidden_for_resize)
if ((flags & ImGuiWindowFlags_Popup) && window_just_appearing_after_hidden_for_resize)
window->Viewport = NULL;
// By default inherit from parent window
if (window->Viewport == NULL && window->ParentWindow)
window->Viewport = window->ParentWindow->Viewport;
// If we stored a viewport id (= window that hasn't been activated yet), try to restore the viewport based on saved 'window->ViewportOsDesktopPos'
// Restore a viewport id (= window that hasn't been activated yet), try to restore the viewport based on saved 'window->ViewportOsDesktopPos'
if (window->Viewport == NULL && window->ViewportId != 0)
{
window->Viewport = FindViewportByID(window->ViewportId);
@ -5973,7 +5980,7 @@ static void ImGui::UpdateWindowViewport(ImGuiWindow* window, bool window_pos_set
{
ImGuiViewport* viewport = Viewport(window->ID, ImGuiViewportFlags_NoDecoration, window->ViewportOsDesktopPos, window->Size);
window->Flags |= ImGuiWindowFlags_FullViewport | ImGuiWindowFlags_NoBringToFrontOnFocus;
window->Viewport = prev_viewport = viewport;
window->Viewport = viewport;
created_viewport = true;
}
else
@ -5983,13 +5990,11 @@ static void ImGui::UpdateWindowViewport(ImGuiWindow* window, bool window_pos_set
}
}
if (window->Viewport == NULL && window->ParentWindow)
window->Viewport = window->ParentWindow->Viewport;
// Fallback to default viewport
if (window->Viewport == NULL)
window->Viewport = g.Viewports[0];
window->Viewport = main_viewport;
// When we own the viewport update its size
if (window->ID == window->Viewport->ID && !created_viewport)
{
window->Viewport->Flags |= ImGuiViewportFlags_NoDecoration;
@ -5999,19 +6004,13 @@ static void ImGui::UpdateWindowViewport(ImGuiWindow* window, bool window_pos_set
}
// Disable rounding for the window
if (window->Viewport != g.Viewports[0])
if (window->Viewport != main_viewport)
window->WindowRounding = 0.0f;
if (window->Flags & ImGuiWindowFlags_FullViewport)
SetWindowPos(window, window->Viewport->Pos, ImGuiCond_Always);
window->ViewportId = window->Viewport->ID;
window->Viewport->LastFrameActive = g.FrameCount;
// On unexpected viewport changes, we try to preserve the same position in OS space.
if (prev_viewport != window->Viewport && prev_viewport != NULL && window->WasActive)
if (!(flags & ImGuiWindowFlags_ChildWindow) && !(flags & ImGuiWindowFlags_Tooltip) && !window_pos_set_by_api)
SetWindowViewportTranslateToPreservePlatformPos(window, prev_viewport, window->Viewport);
}
struct ImGuiResizeGripDef
@ -6320,7 +6319,9 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
UpdateWindowViewport(window, window_pos_set_by_api);
SetCurrentViewport(window->Viewport);
window->Viewport->LastFrameActive = g.FrameCount;
flags = window->Flags;
if (p_open != NULL && window->Viewport->PlatformRequestClose && !(window->Viewport->Flags & ImGuiViewportFlags_MainViewport))
{
window->Viewport->PlatformRequestClose = false;
@ -11882,7 +11883,7 @@ bool ImGui::BeginMenu(const char* label, bool enabled)
if (menu_is_open)
{
SetNextWindowPos(popup_pos, ImGuiCond_Always);
ImGuiWindowFlags flags = ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoSavedSettings | ((window->Flags & (ImGuiWindowFlags_Popup|ImGuiWindowFlags_ChildMenu)) ? ImGuiWindowFlags_ChildMenu|ImGuiWindowFlags_ChildWindow : ImGuiWindowFlags_ChildMenu);
ImGuiWindowFlags flags = ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoSavedSettings | ((window->Flags & (ImGuiWindowFlags_Popup|ImGuiWindowFlags_ChildMenu)) ? ImGuiWindowFlags_ChildMenu|ImGuiWindowFlags_ChildWindow : ImGuiWindowFlags_ChildMenu);
menu_is_open = BeginPopupEx(id, flags); // menu_is_open can be 'false' when the popup is completely clipped (e.g. zero size display)
}

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