From 9f6b1ace8f7e26e26619120843e53453fe70b014 Mon Sep 17 00:00:00 2001 From: ocornut Date: Sat, 23 Jan 2016 15:13:55 +0000 Subject: [PATCH] Tidying up internal FindBestPopupWindowPos() --- imgui.cpp | 20 +++++++++----------- 1 file changed, 9 insertions(+), 11 deletions(-) diff --git a/imgui.cpp b/imgui.cpp index f92e0dd8..b6f8a6ec 100644 --- a/imgui.cpp +++ b/imgui.cpp @@ -612,7 +612,7 @@ static void ClosePopupToLevel(int remaining); static void ClosePopup(ImGuiID id); static bool IsPopupOpen(ImGuiID id); static ImGuiWindow* GetFrontMostModalRootWindow(); -static ImVec2 FindBestPopupWindowPos(const ImVec2& base_pos, const ImVec2& size, ImGuiWindowFlags flags, int* last_dir, const ImRect& r_inner); +static ImVec2 FindBestPopupWindowPos(const ImVec2& base_pos, const ImVec2& size, int* last_dir, const ImRect& rect_to_avoid); static bool InputTextFilterCharacter(unsigned int* p_char, ImGuiInputTextFlags flags, ImGuiTextEditCallback callback, void* user_data); static int InputTextCalcTextLenAndLineCount(const char* text_begin, const char** out_text_end); @@ -3415,7 +3415,7 @@ static void CheckStacksSize(ImGuiWindow* window, bool write) IM_ASSERT(p_backup == window->DC.StackSizesBackup + IM_ARRAYSIZE(window->DC.StackSizesBackup)); } -static ImVec2 FindBestPopupWindowPos(const ImVec2& base_pos, const ImVec2& size, ImGuiWindowFlags flags, int* last_dir, const ImRect& r_inner) +static ImVec2 FindBestPopupWindowPos(const ImVec2& base_pos, const ImVec2& size, int* last_dir, const ImRect& r_inner) { const ImGuiStyle& style = GImGui->Style; @@ -3425,7 +3425,7 @@ static ImVec2 FindBestPopupWindowPos(const ImVec2& base_pos, const ImVec2& size, r_outer.Reduce(ImVec2((size.x - r_outer.GetWidth() > safe_padding.x*2) ? safe_padding.x : 0.0f, (size.y - r_outer.GetHeight() > safe_padding.y*2) ? safe_padding.y : 0.0f)); ImVec2 base_pos_clamped = ImClamp(base_pos, r_outer.Min, r_outer.Max - size); - for (int n = (*last_dir != -1) ? -1 : 0; n < 4; n++) // Right, down, up, left. Favor last used direction. + for (int n = (*last_dir != -1) ? -1 : 0; n < 4; n++) // Last, Right, down, up, left. (Favor last used direction). { const int dir = (n == -1) ? *last_dir : n; ImRect rect(dir == 0 ? r_inner.Max.x : r_outer.Min.x, dir == 1 ? r_inner.Max.y : r_outer.Min.y, dir == 3 ? r_inner.Min.x : r_outer.Max.x, dir == 2 ? r_inner.Min.y : r_outer.Max.y); @@ -3435,12 +3435,8 @@ static ImVec2 FindBestPopupWindowPos(const ImVec2& base_pos, const ImVec2& size, return ImVec2(dir == 0 ? r_inner.Max.x : dir == 3 ? r_inner.Min.x - size.x : base_pos_clamped.x, dir == 1 ? r_inner.Max.y : dir == 2 ? r_inner.Min.y - size.y : base_pos_clamped.y); } - // Fallback + // Fallback, try to keep within display *last_dir = -1; - if (flags & ImGuiWindowFlags_Tooltip) // For tooltip we prefer avoiding the cursor at all cost even if it means that part of the tooltip won't be visible. - return base_pos + ImVec2(2,2); - - // Otherwise try to keep within display ImVec2 pos = base_pos; pos.x = ImMax(ImMin(pos.x + size.x, r_outer.Max.x) - size.x, r_outer.Min.x); pos.y = ImMax(ImMin(pos.y + size.y, r_outer.Max.y) - size.y, r_outer.Min.y); @@ -3804,19 +3800,21 @@ bool ImGui::Begin(const char* name, bool* p_opened, const ImVec2& size_on_first_ rect_to_avoid = ImRect(-FLT_MAX, parent_window->Pos.y + parent_window->TitleBarHeight(), FLT_MAX, parent_window->Pos.y + parent_window->TitleBarHeight() + parent_window->MenuBarHeight()); else rect_to_avoid = ImRect(parent_window->Pos.x + style.ItemSpacing.x, -FLT_MAX, parent_window->Pos.x + parent_window->Size.x - style.ItemSpacing.x - parent_window->ScrollbarSizes.x, FLT_MAX); // We want some overlap to convey the relative depth of each popup (here hard-coded to 4) - window->PosFloat = FindBestPopupWindowPos(window->PosFloat, window->Size, flags, &window->AutoPosLastDirection, rect_to_avoid); + window->PosFloat = FindBestPopupWindowPos(window->PosFloat, window->Size, &window->AutoPosLastDirection, rect_to_avoid); } else if ((flags & ImGuiWindowFlags_Popup) != 0 && !window_pos_set_by_api && window_appearing_after_being_hidden) { ImRect rect_to_avoid(window->PosFloat.x - 1, window->PosFloat.y - 1, window->PosFloat.x + 1, window->PosFloat.y + 1); - window->PosFloat = FindBestPopupWindowPos(window->PosFloat, window->Size, flags, &window->AutoPosLastDirection, rect_to_avoid); + window->PosFloat = FindBestPopupWindowPos(window->PosFloat, window->Size, &window->AutoPosLastDirection, rect_to_avoid); } // Position tooltip (always follows mouse) if ((flags & ImGuiWindowFlags_Tooltip) != 0 && !window_pos_set_by_api) { ImRect rect_to_avoid(g.IO.MousePos.x - 16, g.IO.MousePos.y - 8, g.IO.MousePos.x + 24, g.IO.MousePos.y + 24); // FIXME: Completely hard-coded. Perhaps center on cursor hit-point instead? - window->PosFloat = FindBestPopupWindowPos(g.IO.MousePos, window->Size, flags, &window->AutoPosLastDirection, rect_to_avoid); + window->PosFloat = FindBestPopupWindowPos(g.IO.MousePos, window->Size, &window->AutoPosLastDirection, rect_to_avoid); + if (window->AutoPosLastDirection == -1) + window->PosFloat = g.IO.MousePos + ImVec2(2,2); // If there's not enough room, for tooltip we prefer avoiding the cursor at all cost even if it means that part of the tooltip won't be visible. } // User moving window (at the beginning of the frame to avoid input lag or sheering). Only valid for root windows.