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Fixed SetNextWindowPosCenter() being processed too early for windows that are still measuring their size (for #249)

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This commit is contained in:
ocornut 2015-06-23 15:45:34 -06:00
parent 5436266963
commit d171e48b20
1 changed files with 13 additions and 6 deletions
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19
imgui.cpp
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@ -1426,6 +1426,7 @@ struct ImGuiWindow
int SetWindowPosAllowFlags; // bit ImGuiSetCond_*** specify if SetWindowPos() call will succeed with this particular flag.
int SetWindowSizeAllowFlags; // bit ImGuiSetCond_*** specify if SetWindowSize() call will succeed with this particular flag.
int SetWindowCollapsedAllowFlags; // bit ImGuiSetCond_*** specify if SetWindowCollapsed() call will succeed with this particular flag.
bool SetWindowPosCenterWanted;
ImGuiDrawContext DC; // Temporary per-window data, reset at the beginning of the frame
ImVector<ImGuiID> IDStack; // ID stack. ID are hashes seeded with the value at the top of the stack
@ -1787,6 +1788,7 @@ ImGuiWindow::ImGuiWindow(const char* name)
AutoPosLastDirection = -1;
HiddenFrames = 0;
SetWindowPosAllowFlags = SetWindowSizeAllowFlags = SetWindowCollapsedAllowFlags = ImGuiSetCond_Always | ImGuiSetCond_Once | ImGuiSetCond_FirstUseEver | ImGuiSetCond_Appearing;
SetWindowPosCenterWanted = false;
LastFrameDrawn = -1;
ItemWidthDefault = 0.0f;
@ -3562,16 +3564,20 @@ bool ImGui::Begin(const char* name, bool* p_opened, const ImVec2& size_on_first_
// Process SetNextWindow***() calls
bool window_pos_set_by_api = false, window_size_set_by_api = false;
bool window_pos_center = false;
if (g.SetNextWindowPosCond)
{
const ImVec2 backup_cursor_pos = window->DC.CursorPos; // FIXME: not sure of the exact reason of this anymore :( need to look into that.
if (!window_was_visible) window->SetWindowPosAllowFlags |= ImGuiSetCond_Appearing;
window_pos_set_by_api = (window->SetWindowPosAllowFlags & g.SetNextWindowPosCond) != 0;
if (window_pos_set_by_api && ImLengthSqr(g.SetNextWindowPosVal - ImVec2(-FLT_MAX,-FLT_MAX)) < 0.001f)
window_pos_center = true;
{
window->SetWindowPosCenterWanted = true; // May be processed on the next frame if this is our first frame and we are measuring size
window->SetWindowPosAllowFlags &= ~(ImGuiSetCond_Once | ImGuiSetCond_FirstUseEver | ImGuiSetCond_Appearing);
}
else
{
ImGui::SetWindowPos(g.SetNextWindowPosVal, g.SetNextWindowPosCond);
}
window->DC.CursorPos = backup_cursor_pos;
g.SetNextWindowPosCond = 0;
}
@ -3738,12 +3744,12 @@ bool ImGui::Begin(const char* name, bool* p_opened, const ImVec2& size_on_first_
window->Size = window->SizeFull = size_on_first_use; // NB: argument name 'size_on_first_use' misleading here, it's really just 'size' as provided by user.
}
// Position popup
if ((flags & ImGuiWindowFlags_Modal) && !window_pos_set_by_api && window_appearing_after_being_hidden)
window_pos_center = true;
bool window_pos_center = false;
window_pos_center |= (window->SetWindowPosCenterWanted && window->HiddenFrames == 0);
window_pos_center |= ((flags & ImGuiWindowFlags_Modal) && !window_pos_set_by_api && window_appearing_after_being_hidden);
if (window_pos_center)
{
// Center (any sort of window)
ImRect fullscreen_rect(GetVisibleRect());
SetWindowPos(ImMax(style.DisplaySafeAreaPadding, fullscreen_rect.GetCenter() - window->SizeFull * 0.5f));
}
@ -4485,6 +4491,7 @@ static void SetWindowPos(ImGuiWindow* window, const ImVec2& pos, ImGuiSetCond co
if (cond && (window->SetWindowPosAllowFlags & cond) == 0)
return;
window->SetWindowPosAllowFlags &= ~(ImGuiSetCond_Once | ImGuiSetCond_FirstUseEver | ImGuiSetCond_Appearing);
window->SetWindowPosCenterWanted = false;
// Set
const ImVec2 old_pos = window->Pos;