Update imgui.

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Mr_Goldberg 2021-06-13 00:07:16 -04:00
parent 02195f5636
commit 7350397f9d
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19 changed files with 496 additions and 233 deletions

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@ -1,4 +1,4 @@
// dear imgui, v1.83 WIP
// dear imgui, v1.84 WIP
// (internal structures/api)
// You may use this file to debug, understand or extend ImGui features but we don't provide any guarantee of forward compatibility!
@ -63,7 +63,9 @@ Index of this file:
#pragma warning (disable: 4251) // class 'xxx' needs to have dll-interface to be used by clients of struct 'xxx' // when IMGUI_API is set to__declspec(dllexport)
#pragma warning (disable: 26812) // The enum type 'xxx' is unscoped. Prefer 'enum class' over 'enum' (Enum.3). [MSVC Static Analyzer)
#pragma warning (disable: 26495) // [Static Analyzer] Variable 'XXX' is uninitialized. Always initialize a member variable (type.6).
#if defined(_MSC_VER) && _MSC_VER >= 1922 // MSVC 2019 16.2 or later
#pragma warning (disable: 5054) // operator '|': deprecated between enumerations of different types
#endif
#endif
// Clang/GCC warnings with -Weverything
@ -130,10 +132,11 @@ struct ImGuiTabBar; // Storage for a tab bar
struct ImGuiTabItem; // Storage for a tab item (within a tab bar)
struct ImGuiTable; // Storage for a table
struct ImGuiTableColumn; // Storage for one column of a table
struct ImGuiTableTempData; // Temporary storage for one table (one per table in the stack), shared between tables.
struct ImGuiTableSettings; // Storage for a table .ini settings
struct ImGuiTableColumnsSettings; // Storage for a column .ini settings
struct ImGuiWindow; // Storage for one window
struct ImGuiWindowTempData; // Temporary storage for one window (that's the data which in theory we could ditch at the end of the frame)
struct ImGuiWindowTempData; // Temporary storage for one window (that's the data which in theory we could ditch at the end of the frame, in practice we currently keep it for each window)
struct ImGuiWindowSettings; // Storage for a window .ini settings (we keep one of those even if the actual window wasn't instanced during this session)
// Use your programming IDE "Go to definition" facility on the names of the center columns to find the actual flags/enum lists.
@ -321,12 +324,13 @@ static inline bool ImCharIsBlankA(char c) { return c == ' ' || c =
static inline bool ImCharIsBlankW(unsigned int c) { return c == ' ' || c == '\t' || c == 0x3000; }
// Helpers: UTF-8 <> wchar conversions
IMGUI_API int ImTextStrToUtf8(char* buf, int buf_size, const ImWchar* in_text, const ImWchar* in_text_end); // return output UTF-8 bytes count
IMGUI_API int ImTextCharFromUtf8(unsigned int* out_char, const char* in_text, const char* in_text_end); // read one character. return input UTF-8 bytes count
IMGUI_API int ImTextStrFromUtf8(ImWchar* buf, int buf_size, const char* in_text, const char* in_text_end, const char** in_remaining = NULL); // return input UTF-8 bytes count
IMGUI_API int ImTextCountCharsFromUtf8(const char* in_text, const char* in_text_end); // return number of UTF-8 code-points (NOT bytes count)
IMGUI_API int ImTextCountUtf8BytesFromChar(const char* in_text, const char* in_text_end); // return number of bytes to express one char in UTF-8
IMGUI_API int ImTextCountUtf8BytesFromStr(const ImWchar* in_text, const ImWchar* in_text_end); // return number of bytes to express string in UTF-8
IMGUI_API const char* ImTextCharToUtf8(char out_buf[5], unsigned int c); // return out_buf
IMGUI_API int ImTextStrToUtf8(char* out_buf, int out_buf_size, const ImWchar* in_text, const ImWchar* in_text_end); // return output UTF-8 bytes count
IMGUI_API int ImTextCharFromUtf8(unsigned int* out_char, const char* in_text, const char* in_text_end); // read one character. return input UTF-8 bytes count
IMGUI_API int ImTextStrFromUtf8(ImWchar* out_buf, int out_buf_size, const char* in_text, const char* in_text_end, const char** in_remaining = NULL); // return input UTF-8 bytes count
IMGUI_API int ImTextCountCharsFromUtf8(const char* in_text, const char* in_text_end); // return number of UTF-8 code-points (NOT bytes count)
IMGUI_API int ImTextCountUtf8BytesFromChar(const char* in_text, const char* in_text_end); // return number of bytes to express one char in UTF-8
IMGUI_API int ImTextCountUtf8BytesFromStr(const ImWchar* in_text, const ImWchar* in_text_end); // return number of bytes to express string in UTF-8
// Helpers: ImVec2/ImVec4 operators
// We are keeping those disabled by default so they don't leak in user space, to allow user enabling implicit cast operators between ImVec2 and their own types (using IM_VEC2_CLASS_EXTRA etc.)
@ -608,20 +612,30 @@ struct IMGUI_API ImPool
ImVector<T> Buf; // Contiguous data
ImGuiStorage Map; // ID->Index
ImPoolIdx FreeIdx; // Next free idx to use
ImPoolIdx AliveCount; // Number of active/alive items (for display purpose)
ImPool() { FreeIdx = 0; }
ImPool() { FreeIdx = AliveCount = 0; }
~ImPool() { Clear(); }
T* GetByKey(ImGuiID key) { int idx = Map.GetInt(key, -1); return (idx != -1) ? &Buf[idx] : NULL; }
T* GetByIndex(ImPoolIdx n) { return &Buf[n]; }
ImPoolIdx GetIndex(const T* p) const { IM_ASSERT(p >= Buf.Data && p < Buf.Data + Buf.Size); return (ImPoolIdx)(p - Buf.Data); }
T* GetOrAddByKey(ImGuiID key) { int* p_idx = Map.GetIntRef(key, -1); if (*p_idx != -1) return &Buf[*p_idx]; *p_idx = FreeIdx; return Add(); }
bool Contains(const T* p) const { return (p >= Buf.Data && p < Buf.Data + Buf.Size); }
void Clear() { for (int n = 0; n < Map.Data.Size; n++) { int idx = Map.Data[n].val_i; if (idx != -1) Buf[idx].~T(); } Map.Clear(); Buf.clear(); FreeIdx = 0; }
T* Add() { int idx = FreeIdx; if (idx == Buf.Size) { Buf.resize(Buf.Size + 1); FreeIdx++; } else { FreeIdx = *(int*)&Buf[idx]; } IM_PLACEMENT_NEW(&Buf[idx]) T(); return &Buf[idx]; }
void Clear() { for (int n = 0; n < Map.Data.Size; n++) { int idx = Map.Data[n].val_i; if (idx != -1) Buf[idx].~T(); } Map.Clear(); Buf.clear(); FreeIdx = AliveCount = 0; }
T* Add() { int idx = FreeIdx; if (idx == Buf.Size) { Buf.resize(Buf.Size + 1); FreeIdx++; } else { FreeIdx = *(int*)&Buf[idx]; } IM_PLACEMENT_NEW(&Buf[idx]) T(); AliveCount++; return &Buf[idx]; }
void Remove(ImGuiID key, const T* p) { Remove(key, GetIndex(p)); }
void Remove(ImGuiID key, ImPoolIdx idx) { Buf[idx].~T(); *(int*)&Buf[idx] = FreeIdx; FreeIdx = idx; Map.SetInt(key, -1); }
void Remove(ImGuiID key, ImPoolIdx idx) { Buf[idx].~T(); *(int*)&Buf[idx] = FreeIdx; FreeIdx = idx; Map.SetInt(key, -1); AliveCount--; }
void Reserve(int capacity) { Buf.reserve(capacity); Map.Data.reserve(capacity); }
int GetSize() const { return Buf.Size; }
// To iterate a ImPool: for (int n = 0; n < pool.GetMapSize(); n++) if (T* t = pool.TryGetMapData(n)) { ... }
// Can be avoided if you know .Remove() has never been called on the pool, or AliveCount == GetMapSize()
int GetAliveCount() const { return AliveCount; } // Number of active/alive items in the pool (for display purpose)
int GetBufSize() const { return Buf.Size; }
int GetMapSize() const { return Map.Data.Size; } // It is the map we need iterate to find valid items, since we don't have "alive" storage anywhere
T* TryGetMapData(ImPoolIdx n) { int idx = Map.Data[n].val_i; if (idx == -1) return NULL; return GetByIndex(idx); }
#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
int GetSize() { return GetMapSize(); } // For ImPlot: should use GetMapSize() from (IMGUI_VERSION_NUM >= 18304)
#endif
};
// Helper: ImChunkStream<>
@ -1028,7 +1042,7 @@ struct IMGUI_API ImGuiInputTextState
bool CursorFollow; // set when we want scrolling to follow the current cursor position (not always!)
bool SelectedAllMouseLock; // after a double-click to select all, we ignore further mouse drags to update selection
bool Edited; // edited this frame
ImGuiInputTextFlags UserFlags; // Temporarily set while we call user's callback
ImGuiInputTextFlags Flags; // copy of InputText() flags
ImGuiInputTextCallback UserCallback; // "
void* UserCallbackData; // "
@ -1516,8 +1530,9 @@ struct ImGuiContext
// Table
ImGuiTable* CurrentTable;
int CurrentTableStackIdx;
ImPool<ImGuiTable> Tables;
ImVector<ImGuiPtrOrIndex> CurrentTableStack;
ImVector<ImGuiTableTempData> TablesTempDataStack;
ImVector<float> TablesLastTimeActive; // Last used timestamp of each tables (SOA, for efficient GC)
ImVector<ImDrawChannel> DrawChannelsTempMergeBuffer;
@ -1584,6 +1599,7 @@ struct ImGuiContext
// Misc
float FramerateSecPerFrame[120]; // Calculate estimate of framerate for user over the last 2 seconds.
int FramerateSecPerFrameIdx;
int FramerateSecPerFrameCount;
float FramerateSecPerFrameAccum;
int WantCaptureMouseNextFrame; // Explicit capture via CaptureKeyboardFromApp()/CaptureMouseFromApp() sets those flags
int WantCaptureKeyboardNextFrame;
@ -1694,6 +1710,7 @@ struct ImGuiContext
memset(DragDropPayloadBufLocal, 0, sizeof(DragDropPayloadBufLocal));
CurrentTable = NULL;
CurrentTableStackIdx = -1;
CurrentTabBar = NULL;
LastValidMousePos = ImVec2(0.0f, 0.0f);
@ -1730,7 +1747,7 @@ struct ImGuiContext
DebugItemPickerBreakId = 0;
memset(FramerateSecPerFrame, 0, sizeof(FramerateSecPerFrame));
FramerateSecPerFrameIdx = 0;
FramerateSecPerFrameIdx = FramerateSecPerFrameCount = 0;
FramerateSecPerFrameAccum = 0.0f;
WantCaptureMouseNextFrame = WantCaptureKeyboardNextFrame = WantTextInputNextFrame = -1;
memset(TempBuffer, 0, sizeof(TempBuffer));
@ -1945,7 +1962,7 @@ enum ImGuiTabItemFlagsPrivate_
ImGuiTabItemFlags_Button = 1 << 21 // Used by TabItemButton, change the tab item behavior to mimic a button
};
// Storage for one active tab item (sizeof() 28~32 bytes)
// Storage for one active tab item (sizeof() 40 bytes)
struct ImGuiTabItem
{
ImGuiID ID;
@ -1955,12 +1972,12 @@ struct ImGuiTabItem
float Offset; // Position relative to beginning of tab
float Width; // Width currently displayed
float ContentWidth; // Width of label, stored during BeginTabItem() call
ImS16 NameOffset; // When Window==NULL, offset to name within parent ImGuiTabBar::TabsNames
ImS32 NameOffset; // When Window==NULL, offset to name within parent ImGuiTabBar::TabsNames
ImS16 BeginOrder; // BeginTabItem() order, used to re-order tabs after toggling ImGuiTabBarFlags_Reorderable
ImS16 IndexDuringLayout; // Index only used during TabBarLayout()
bool WantClose; // Marked as closed by SetTabItemClosed()
ImGuiTabItem() { memset(this, 0, sizeof(*this)); LastFrameVisible = LastFrameSelected = -1; NameOffset = BeginOrder = IndexDuringLayout = -1; }
ImGuiTabItem() { memset(this, 0, sizeof(*this)); LastFrameVisible = LastFrameSelected = -1; NameOffset = -1; BeginOrder = IndexDuringLayout = -1; }
};
// Storage for a tab bar (sizeof() 152 bytes)
@ -2002,7 +2019,7 @@ struct ImGuiTabBar
int GetTabOrder(const ImGuiTabItem* tab) const { return Tabs.index_from_ptr(tab); }
const char* GetTabName(const ImGuiTabItem* tab) const
{
IM_ASSERT(tab->NameOffset != -1 && (int)tab->NameOffset < TabsNames.Buf.Size);
IM_ASSERT(tab->NameOffset != -1 && tab->NameOffset < TabsNames.Buf.Size);
return TabsNames.Buf.Data + tab->NameOffset;
}
};
@ -2011,8 +2028,6 @@ struct ImGuiTabBar
// [SECTION] Table support
//-----------------------------------------------------------------------------
#ifdef IMGUI_HAS_TABLE
#define IM_COL32_DISABLE IM_COL32(0,0,0,1) // Special sentinel code which cannot be used as a regular color.
#define IMGUI_TABLE_MAX_COLUMNS 64 // sizeof(ImU64) * 8. This is solely because we frequently encode columns set in a ImU64.
#define IMGUI_TABLE_MAX_DRAW_CHANNELS (4 + 64 * 2) // See TableSetupDrawChannels()
@ -2089,12 +2104,13 @@ struct ImGuiTableCellData
ImGuiTableColumnIdx Column; // Column number
};
// FIXME-TABLE: transient data could be stored in a per-stacked table structure: DrawSplitter, SortSpecs, incoming RowData
// FIXME-TABLE: more transient data could be stored in a per-stacked table structure: DrawSplitter, SortSpecs, incoming RowData
struct ImGuiTable
{
ImGuiID ID;
ImGuiTableFlags Flags;
void* RawData; // Single allocation to hold Columns[], DisplayOrderToIndex[] and RowCellData[]
ImGuiTableTempData* TempData; // Transient data while table is active. Point within g.CurrentTableStack[]
ImSpan<ImGuiTableColumn> Columns; // Point within RawData[]
ImSpan<ImGuiTableColumnIdx> DisplayOrderToIndex; // Point within RawData[]. Store display order of columns (when not reordered, the values are 0...Count-1)
ImSpan<ImGuiTableCellData> RowCellData; // Point within RawData[]. Store cells background requests for current row.
@ -2146,22 +2162,11 @@ struct ImGuiTable
ImRect Bg0ClipRectForDrawCmd; // Actual ImDrawCmd clip rect for BG0/1 channel. This tends to be == OuterWindow->ClipRect at BeginTable() because output in BG0/BG1 is cpu-clipped
ImRect Bg2ClipRectForDrawCmd; // Actual ImDrawCmd clip rect for BG2 channel. This tends to be a correct, tight-fit, because output to BG2 are done by widgets relying on regular ClipRect.
ImRect HostClipRect; // This is used to check if we can eventually merge our columns draw calls into the current draw call of the current window.
ImRect HostBackupWorkRect; // Backup of InnerWindow->WorkRect at the end of BeginTable()
ImRect HostBackupParentWorkRect; // Backup of InnerWindow->ParentWorkRect at the end of BeginTable()
ImRect HostBackupInnerClipRect; // Backup of InnerWindow->ClipRect during PushTableBackground()/PopTableBackground()
ImVec2 HostBackupPrevLineSize; // Backup of InnerWindow->DC.PrevLineSize at the end of BeginTable()
ImVec2 HostBackupCurrLineSize; // Backup of InnerWindow->DC.CurrLineSize at the end of BeginTable()
ImVec2 HostBackupCursorMaxPos; // Backup of InnerWindow->DC.CursorMaxPos at the end of BeginTable()
ImVec2 UserOuterSize; // outer_size.x passed to BeginTable()
ImVec1 HostBackupColumnsOffset; // Backup of OuterWindow->DC.ColumnsOffset at the end of BeginTable()
float HostBackupItemWidth; // Backup of OuterWindow->DC.ItemWidth at the end of BeginTable()
int HostBackupItemWidthStackSize;// Backup of OuterWindow->DC.ItemWidthStack.Size at the end of BeginTable()
ImGuiWindow* OuterWindow; // Parent window for the table
ImGuiWindow* InnerWindow; // Window holding the table data (== OuterWindow or a child window)
ImGuiTextBuffer ColumnsNames; // Contiguous buffer holding columns names
ImDrawListSplitter DrawSplitter; // We carry our own ImDrawList splitter to allow recursion (FIXME: could be stored outside, worst case we need 1 splitter per recursing table)
ImGuiTableColumnSortSpecs SortSpecsSingle;
ImVector<ImGuiTableColumnSortSpecs> SortSpecsMulti; // FIXME-OPT: Using a small-vector pattern would work be good.
ImDrawListSplitter* DrawSplitter; // Shortcut to TempData->DrawSplitter while in table. Isolate draw commands per columns to avoid switching clip rect constantly
ImGuiTableSortSpecs SortSpecs; // Public facing sorts specs, this is what we return in TableGetSortSpecs()
ImGuiTableColumnIdx SortSpecsCount;
ImGuiTableColumnIdx ColumnsEnabledCount; // Number of enabled columns (<= ColumnsCount)
@ -2208,6 +2213,32 @@ struct ImGuiTable
IMGUI_API ~ImGuiTable() { IM_FREE(RawData); }
};
// Transient data that are only needed between BeginTable() and EndTable(), those buffers are shared (1 per level of stacked table).
// - Accessing those requires chasing an extra pointer so for very frequently used data we leave them in the main table structure.
// - We also leave out of this structure data that tend to be particularly useful for debugging/metrics.
// FIXME-TABLE: more transient data could be stored here: DrawSplitter, incoming RowData?
struct ImGuiTableTempData
{
int TableIndex; // Index in g.Tables.Buf[] pool
float LastTimeActive; // Last timestamp this structure was used
ImVec2 UserOuterSize; // outer_size.x passed to BeginTable()
ImDrawListSplitter DrawSplitter;
ImGuiTableColumnSortSpecs SortSpecsSingle;
ImVector<ImGuiTableColumnSortSpecs> SortSpecsMulti; // FIXME-OPT: Using a small-vector pattern would be good.
ImRect HostBackupWorkRect; // Backup of InnerWindow->WorkRect at the end of BeginTable()
ImRect HostBackupParentWorkRect; // Backup of InnerWindow->ParentWorkRect at the end of BeginTable()
ImVec2 HostBackupPrevLineSize; // Backup of InnerWindow->DC.PrevLineSize at the end of BeginTable()
ImVec2 HostBackupCurrLineSize; // Backup of InnerWindow->DC.CurrLineSize at the end of BeginTable()
ImVec2 HostBackupCursorMaxPos; // Backup of InnerWindow->DC.CursorMaxPos at the end of BeginTable()
ImVec1 HostBackupColumnsOffset; // Backup of OuterWindow->DC.ColumnsOffset at the end of BeginTable()
float HostBackupItemWidth; // Backup of OuterWindow->DC.ItemWidth at the end of BeginTable()
int HostBackupItemWidthStackSize;//Backup of OuterWindow->DC.ItemWidthStack.Size at the end of BeginTable()
IMGUI_API ImGuiTableTempData() { memset(this, 0, sizeof(*this)); LastTimeActive = -1.0f; }
};
// sizeof() ~ 12
struct ImGuiTableColumnSettings
{
@ -2246,8 +2277,6 @@ struct ImGuiTableSettings
ImGuiTableColumnSettings* GetColumnSettings() { return (ImGuiTableColumnSettings*)(this + 1); }
};
#endif // #ifdef IMGUI_HAS_TABLE
//-----------------------------------------------------------------------------
// [SECTION] ImGui internal API
// No guarantee of forward compatibility here!
@ -2269,7 +2298,6 @@ namespace ImGui
IMGUI_API bool IsWindowChildOf(ImGuiWindow* window, ImGuiWindow* potential_parent);
IMGUI_API bool IsWindowAbove(ImGuiWindow* potential_above, ImGuiWindow* potential_below);
IMGUI_API bool IsWindowNavFocusable(ImGuiWindow* window);
IMGUI_API ImRect GetWindowAllowedExtentRect(ImGuiWindow* window);
IMGUI_API void SetWindowPos(ImGuiWindow* window, const ImVec2& pos, ImGuiCond cond = 0);
IMGUI_API void SetWindowSize(ImGuiWindow* window, const ImVec2& size, ImGuiCond cond = 0);
IMGUI_API void SetWindowCollapsed(ImGuiWindow* window, bool collapsed, ImGuiCond cond = 0);
@ -2377,11 +2405,15 @@ namespace ImGui
IMGUI_API bool IsPopupOpen(ImGuiID id, ImGuiPopupFlags popup_flags);
IMGUI_API bool BeginPopupEx(ImGuiID id, ImGuiWindowFlags extra_flags);
IMGUI_API void BeginTooltipEx(ImGuiWindowFlags extra_flags, ImGuiTooltipFlags tooltip_flags);
IMGUI_API ImRect GetPopupAllowedExtentRect(ImGuiWindow* window);
IMGUI_API ImGuiWindow* GetTopMostPopupModal();
IMGUI_API ImVec2 FindBestWindowPosForPopup(ImGuiWindow* window);
IMGUI_API ImVec2 FindBestWindowPosForPopupEx(const ImVec2& ref_pos, const ImVec2& size, ImGuiDir* last_dir, const ImRect& r_outer, const ImRect& r_avoid, ImGuiPopupPositionPolicy policy);
IMGUI_API bool BeginViewportSideBar(const char* name, ImGuiViewport* viewport, ImGuiDir dir, float size, ImGuiWindowFlags window_flags);
// Combos
IMGUI_API bool BeginComboPopup(ImGuiID popup_id, const ImRect& bb, ImGuiComboFlags flags);
// Gamepad/Keyboard Navigation
IMGUI_API void NavInitWindow(ImGuiWindow* window, bool force_reinit);
IMGUI_API bool NavMoveRequestButNoResultYet();
@ -2470,6 +2502,7 @@ namespace ImGui
IMGUI_API void TableSetColumnWidthAutoAll(ImGuiTable* table);
IMGUI_API void TableRemove(ImGuiTable* table);
IMGUI_API void TableGcCompactTransientBuffers(ImGuiTable* table);
IMGUI_API void TableGcCompactTransientBuffers(ImGuiTableTempData* table);
IMGUI_API void TableGcCompactSettings();
// Tables: Settings
@ -2596,9 +2629,11 @@ namespace ImGui
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 DebugStartItemPicker() { ImGuiContext& g = *GImGui; g.DebugItemPickerActive = true; }
IMGUI_API void ShowFontAtlas(ImFontAtlas* atlas);
IMGUI_API void DebugNodeColumns(ImGuiOldColumns* columns);
IMGUI_API void DebugNodeDrawList(ImGuiWindow* window, const ImDrawList* draw_list, const char* label);
IMGUI_API void DebugNodeDrawCmdShowMeshAndBoundingBox(ImDrawList* out_draw_list, const ImDrawList* draw_list, const ImDrawCmd* draw_cmd, bool show_mesh, bool show_aabb);
IMGUI_API void DebugNodeFont(ImFont* font);
IMGUI_API void DebugNodeStorage(ImGuiStorage* storage, const char* label);
IMGUI_API void DebugNodeTabBar(ImGuiTabBar* tab_bar, const char* label);
IMGUI_API void DebugNodeTable(ImGuiTable* table);