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Fix IsWindowAppearing() from returning true twice in most cases. (#3982, #1497, #1061)

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This commit is contained in:
ocornut 2021-03-29 19:45:55 +02:00
parent 951c84969b
commit 84e6fe4fc7
2 changed files with 3 additions and 2 deletions
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1
docs/CHANGELOG.txt
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@ -41,6 +41,7 @@ Other Changes:
- Scrolling: Fix scroll tracking with e.g. SetScrollHereX/Y() when WindowPadding < ItemSpacing.
- Scrolling: Fix scroll snapping on edge of scroll region when both scrollbars are enabled.
- Window: Fix IsWindowAppearing() from returning true twice in most cases. (#3982, #1497, #1061)
- Tables: Expose TableSetColumnEnabled() in public api. (#3935)
- TabBar: Fixed mouse reordering with very fast movements (e.g. crossing multiple tabs in a single
frame and then immediately standling still (would only affect automation/bots). [@rokups]

4
imgui.cpp
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@ -5703,14 +5703,13 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
// Update the Appearing flag
bool window_just_activated_by_user = (window->LastFrameActive < current_frame - 1); // Not using !WasActive because the implicit "Debug" window would always toggle off->on
const bool window_just_appearing_after_hidden_for_resize = (window->HiddenFramesCannotSkipItems > 0);
if (flags & ImGuiWindowFlags_Popup)
{
ImGuiPopupData& popup_ref = g.OpenPopupStack[g.BeginPopupStack.Size];
window_just_activated_by_user |= (window->PopupId != popup_ref.PopupId); // We recycle popups so treat window as activated if popup id changed
window_just_activated_by_user |= (window != popup_ref.Window);
}
window->Appearing = (window_just_activated_by_user || window_just_appearing_after_hidden_for_resize);
window->Appearing = window_just_activated_by_user;
if (window->Appearing)
SetWindowConditionAllowFlags(window, ImGuiCond_Appearing, true);
@ -5967,6 +5966,7 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
window->Pos = parent_window->DC.CursorPos;
}
const bool window_just_appearing_after_hidden_for_resize = (window->HiddenFramesCannotSkipItems > 0);
const bool window_pos_with_pivot = (window->SetWindowPosVal.x != FLT_MAX && window->HiddenFramesCannotSkipItems == 0);
if (window_pos_with_pivot)
SetWindowPos(window, window->SetWindowPosVal - window->Size * window->SetWindowPosPivot, 0); // Position given a pivot (e.g. for centering)