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Internals: moved LastItem data to a shared structure (instead of one per window)

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(should be a no-op as we are restoring things in Begin/End. Toward faciliate backup/restore of LastItemData and favor pulling from here instead of CurrentItemFlags, toward #211)
This commit is contained in:
ocornut
2021-07-19 21:08:22 +02:00
parent 1ad153056a
commit 6b8a059fc9
5 changed files with 159 additions and 165 deletions
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61
imgui_internal.h
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@ -116,7 +116,7 @@ struct ImGuiContextHook; // Hook for extensions like ImGuiTestEngine
struct ImGuiDataTypeInfo; // Type information associated to a ImGuiDataType enum
struct ImGuiGroupData; // Stacked storage data for BeginGroup()/EndGroup()
struct ImGuiInputTextState; // Internal state of the currently focused/edited text input box
struct ImGuiLastItemDataBackup; // Backup and restore IsItemHovered() internal data
struct ImGuiLastItemData; // Status storage for last submitted items
struct ImGuiMenuColumns; // Simple column measurement, currently used for MenuItem() only
struct ImGuiNavItemData; // Result of a gamepad/keyboard directional navigation move query result
struct ImGuiMetricsConfig; // Storage for ShowMetricsWindow() and DebugNodeXXX() functions
@ -1172,6 +1172,25 @@ struct ImGuiNextItemData
inline void ClearFlags() { Flags = ImGuiNextItemDataFlags_None; } // Also cleared manually by ItemAdd()!
};
// Status storage for the last submitted item
struct ImGuiLastItemData
{
ImGuiID ID;
ImGuiItemFlags InFlags;
ImGuiItemStatusFlags StatusFlags;
ImRect Rect;
ImRect DisplayRect;
ImGuiLastItemData() { memset(this, 0, sizeof(*this)); }
};
// Data saved for each window pushed into the stack
struct ImGuiWindowStackData
{
ImGuiWindow* Window;
ImGuiLastItemData ParentLastItemDataBackup;
};
struct ImGuiShrinkWidthItem
{
int Index;
@ -1414,7 +1433,7 @@ struct ImGuiContext
ImVector<ImGuiWindow*> Windows; // Windows, sorted in display order, back to front
ImVector<ImGuiWindow*> WindowsFocusOrder; // Root windows, sorted in focus order, back to front.
ImVector<ImGuiWindow*> WindowsTempSortBuffer; // Temporary buffer used in EndFrame() to reorder windows so parents are kept before their child
ImVector<ImGuiWindow*> CurrentWindowStack;
ImVector<ImGuiWindowStackData> CurrentWindowStack;
ImGuiStorage WindowsById; // Map window's ImGuiID to ImGuiWindow*
int WindowsActiveCount; // Number of unique windows submitted by frame
ImVec2 WindowsHoverPadding; // Padding around resizable windows for which hovering on counts as hovering the window == ImMax(style.TouchExtraPadding, WINDOWS_HOVER_PADDING)
@ -1427,7 +1446,6 @@ struct ImGuiContext
float WheelingWindowTimer;
// Item/widgets state and tracking information
ImGuiItemFlags CurrentItemFlags; // == g.ItemFlagsStack.back()
ImGuiID HoveredId; // Hovered widget, filled during the frame
ImGuiID HoveredIdPreviousFrame;
bool HoveredIdAllowOverlap;
@ -1461,8 +1479,10 @@ struct ImGuiContext
float LastActiveIdTimer; // Store the last non-zero ActiveId timer since the beginning of activation, useful for animation.
// Next window/item data
ImGuiNextWindowData NextWindowData; // Storage for SetNextWindow** functions
ImGuiItemFlags CurrentItemFlags; // == g.ItemFlagsStack.back()
ImGuiNextItemData NextItemData; // Storage for SetNextItem** functions
ImGuiLastItemData LastItemData; // Storage for last submitted item (setup by ItemAdd)
ImGuiNextWindowData NextWindowData; // Storage for SetNextWindow** functions
// Shared stacks
ImVector<ImGuiColorMod> ColorStack; // Stack for PushStyleColor()/PopStyleColor() - inherited by Begin()
@ -1659,7 +1679,6 @@ struct ImGuiContext
WheelingWindow = NULL;
WheelingWindowTimer = 0.0f;
CurrentItemFlags = ImGuiItemFlags_None;
HoveredId = HoveredIdPreviousFrame = 0;
HoveredIdAllowOverlap = false;
HoveredIdUsingMouseWheel = HoveredIdPreviousFrameUsingMouseWheel = false;
@ -1689,6 +1708,8 @@ struct ImGuiContext
LastActiveId = 0;
LastActiveIdTimer = 0.0f;
CurrentItemFlags = ImGuiItemFlags_None;
NavWindow = NULL;
NavId = NavFocusScopeId = NavActivateId = NavActivateDownId = NavActivatePressedId = NavInputId = 0;
NavJustTabbedId = NavJustMovedToId = NavJustMovedToFocusScopeId = NavNextActivateId = 0;
@ -1806,13 +1827,6 @@ struct IMGUI_API ImGuiWindowTempData
ImVec1 ColumnsOffset; // Offset to the current column (if ColumnsCurrent > 0). FIXME: This and the above should be a stack to allow use cases like Tree->Column->Tree. Need revamp columns API.
ImVec1 GroupOffset;
// Last item status
ImGuiID LastItemId; // ID for last item
ImGuiItemFlags LastItemInFlags; // Copy of flags for last item (see ImGuiItemflags_), named "In" to avoid probably confusion with status flags
ImGuiItemStatusFlags LastItemStatusFlags; // Status flags for last item (see ImGuiItemStatusFlags_)
ImRect LastItemRect; // Interaction rect for last item
ImRect LastItemDisplayRect; // End-user display rect for last item (only valid if LastItemStatusFlags & ImGuiItemStatusFlags_HasDisplayRect)
// Keyboard/Gamepad navigation
ImGuiNavLayer NavLayerCurrent; // Current layer, 0..31 (we currently only use 0..1)
short NavLayersActiveMask; // Which layers have been written to (result from previous frame)
@ -1959,20 +1973,6 @@ public:
ImRect MenuBarRect() const { float y1 = Pos.y + TitleBarHeight(); return ImRect(Pos.x, y1, Pos.x + SizeFull.x, y1 + MenuBarHeight()); }
};
// Backup and restore just enough data to be able to use IsItemHovered() on item A after another B in the same window has overwritten the data.
struct ImGuiLastItemDataBackup
{
ImGuiID LastItemId;
ImGuiItemFlags LastItemInFlags;
ImGuiItemStatusFlags LastItemStatusFlags;
ImRect LastItemRect;
ImRect LastItemDisplayRect;
ImGuiLastItemDataBackup() { Backup(); }
void Backup() { ImGuiWindow* window = GImGui->CurrentWindow; LastItemId = window->DC.LastItemId; LastItemInFlags = window->DC.LastItemInFlags; LastItemStatusFlags = window->DC.LastItemStatusFlags; LastItemRect = window->DC.LastItemRect; LastItemDisplayRect = window->DC.LastItemDisplayRect; }
void Restore() const { ImGuiWindow* window = GImGui->CurrentWindow; window->DC.LastItemId = LastItemId; window->DC.LastItemInFlags = LastItemInFlags; window->DC.LastItemStatusFlags = LastItemStatusFlags; window->DC.LastItemRect = LastItemRect; window->DC.LastItemDisplayRect = LastItemDisplayRect; }
};
//-----------------------------------------------------------------------------
// [SECTION] Tab bar, Tab item support
//-----------------------------------------------------------------------------
@ -2381,11 +2381,11 @@ namespace ImGui
IMGUI_API ImVec2 ScrollToBringRectIntoView(ImGuiWindow* window, const ImRect& item_rect);
// Basic Accessors
inline ImGuiID GetItemID() { ImGuiContext& g = *GImGui; return g.CurrentWindow->DC.LastItemId; } // Get ID of last item (~~ often same ImGui::GetID(label) beforehand)
inline ImGuiItemStatusFlags GetItemStatusFlags() { ImGuiContext& g = *GImGui; return g.CurrentWindow->DC.LastItemStatusFlags; }
inline ImGuiID GetItemID() { ImGuiContext& g = *GImGui; return g.LastItemData.ID; } // Get ID of last item (~~ often same ImGui::GetID(label) beforehand)
inline ImGuiItemStatusFlags GetItemStatusFlags(){ ImGuiContext& g = *GImGui; return g.LastItemData.StatusFlags; }
inline ImGuiItemFlags GetItemFlags() { ImGuiContext& g = *GImGui; return g.LastItemData.InFlags; }
inline ImGuiID GetActiveID() { ImGuiContext& g = *GImGui; return g.ActiveId; }
inline ImGuiID GetFocusID() { ImGuiContext& g = *GImGui; return g.NavId; }
inline ImGuiItemFlags GetItemFlags() { ImGuiContext& g = *GImGui; return g.CurrentItemFlags; }
IMGUI_API void SetActiveID(ImGuiID id, ImGuiWindow* window);
IMGUI_API void SetFocusID(ImGuiID id, ImGuiWindow* window);
IMGUI_API void ClearActiveID();
@ -2403,7 +2403,6 @@ namespace ImGui
IMGUI_API bool ItemHoverable(const ImRect& bb, ImGuiID id);
IMGUI_API void ItemFocusable(ImGuiWindow* window, ImGuiID id);
IMGUI_API bool IsClippedEx(const ImRect& bb, ImGuiID id, bool clip_even_when_logged);
IMGUI_API void SetLastItemData(ImGuiWindow* window, ImGuiID item_id, ImGuiItemFlags item_flags, ImGuiItemStatusFlags status_flags, const ImRect& item_rect);
IMGUI_API ImVec2 CalcItemSize(ImVec2 size, float default_w, float default_h);
IMGUI_API float CalcWrapWidthForPos(const ImVec2& pos, float wrap_pos_x);
IMGUI_API void PushMultiItemsWidths(int components, float width_full);
@ -2667,7 +2666,7 @@ namespace ImGui
// Debug Tools
IMGUI_API void ErrorCheckEndFrameRecover(ImGuiErrorLogCallback log_callback, void* user_data = NULL);
inline void DebugDrawItemRect(ImU32 col = IM_COL32(255,0,0,255)) { ImGuiContext& g = *GImGui; ImGuiWindow* window = g.CurrentWindow; GetForegroundDrawList(window)->AddRect(window->DC.LastItemRect.Min, window->DC.LastItemRect.Max, col); }
inline void DebugDrawItemRect(ImU32 col = IM_COL32(255,0,0,255)) { ImGuiContext& g = *GImGui; ImGuiWindow* window = g.CurrentWindow; GetForegroundDrawList(window)->AddRect(g.LastItemData.Rect.Min, g.LastItemData.Rect.Max, col); }
inline void DebugStartItemPicker() { ImGuiContext& g = *GImGui; g.DebugItemPickerActive = true; }
IMGUI_API void ShowFontAtlas(ImFontAtlas* atlas);