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Internals: avoid using bitfields in ImGuiNextItemData as it leads to extraneous packing. rename ImGuiDataTypeTempStorage to ImGuiDataTypeStorage. moved DataType section above Widgets.

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This commit is contained in:
ocornut 2024-06-06 15:53:05 +02:00
parent 0561d708ba
commit 3460014e05
2 changed files with 39 additions and 39 deletions
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72
imgui_internal.h
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@ -14,8 +14,8 @@ Index of this file:
// [SECTION] Macros
// [SECTION] Generic helpers
// [SECTION] ImDrawList support
// [SECTION] Widgets support: flags, enums, data structures
// [SECTION] Data types support
// [SECTION] Widgets support: flags, enums, data structures
// [SECTION] Popup support
// [SECTION] Inputs support
// [SECTION] Clipper support
@ -798,6 +798,40 @@ struct ImDrawDataBuilder
ImDrawDataBuilder() { memset(this, 0, sizeof(*this)); }
};
//-----------------------------------------------------------------------------
// [SECTION] Data types support
//-----------------------------------------------------------------------------
struct ImGuiDataVarInfo
{
ImGuiDataType Type;
ImU32 Count; // 1+
ImU32 Offset; // Offset in parent structure
void* GetVarPtr(void* parent) const { return (void*)((unsigned char*)parent + Offset); }
};
struct ImGuiDataTypeStorage
{
ImU8 Data[8]; // Opaque storage to fit any data up to ImGuiDataType_COUNT
};
// Type information associated to one ImGuiDataType. Retrieve with DataTypeGetInfo().
struct ImGuiDataTypeInfo
{
size_t Size; // Size in bytes
const char* Name; // Short descriptive name for the type, for debugging
const char* PrintFmt; // Default printf format for the type
const char* ScanFmt; // Default scanf format for the type
};
// Extend ImGuiDataType_
enum ImGuiDataTypePrivate_
{
ImGuiDataType_String = ImGuiDataType_COUNT + 1,
ImGuiDataType_Pointer,
ImGuiDataType_ID,
};
//-----------------------------------------------------------------------------
// [SECTION] Widgets support: flags, enums, data structures
//-----------------------------------------------------------------------------
@ -1189,7 +1223,7 @@ struct ImGuiNextItemData
ImGuiKeyChord Shortcut; // Set by SetNextItemShortcut()
ImGuiInputFlags ShortcutFlags; // Set by SetNextItemShortcut()
bool OpenVal; // Set by SetNextItemOpen()
ImGuiCond OpenCond : 8;
ImU8 OpenCond; // Set by SetNextItemOpen()
ImGuiNextItemData() { memset(this, 0, sizeof(*this)); SelectionUserData = -1; }
inline void ClearFlags() { Flags = ImGuiNextItemDataFlags_None; ItemFlags = ImGuiItemFlags_None; } // Also cleared manually by ItemAdd()!
@ -1263,40 +1297,6 @@ struct ImGuiPtrOrIndex
ImGuiPtrOrIndex(int index) { Ptr = NULL; Index = index; }
};
//-----------------------------------------------------------------------------
// [SECTION] Data types support
//-----------------------------------------------------------------------------
struct ImGuiDataVarInfo
{
ImGuiDataType Type;
ImU32 Count; // 1+
ImU32 Offset; // Offset in parent structure
void* GetVarPtr(void* parent) const { return (void*)((unsigned char*)parent + Offset); }
};
struct ImGuiDataTypeTempStorage
{
ImU8 Data[8]; // Can fit any data up to ImGuiDataType_COUNT
};
// Type information associated to one ImGuiDataType. Retrieve with DataTypeGetInfo().
struct ImGuiDataTypeInfo
{
size_t Size; // Size in bytes
const char* Name; // Short descriptive name for the type, for debugging
const char* PrintFmt; // Default printf format for the type
const char* ScanFmt; // Default scanf format for the type
};
// Extend ImGuiDataType_
enum ImGuiDataTypePrivate_
{
ImGuiDataType_String = ImGuiDataType_COUNT + 1,
ImGuiDataType_Pointer,
ImGuiDataType_ID,
};
//-----------------------------------------------------------------------------
// [SECTION] Popup support
//-----------------------------------------------------------------------------

6
imgui_widgets.cpp
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@ -2150,7 +2150,7 @@ bool ImGui::DataTypeApplyFromText(const char* buf, ImGuiDataType data_type, void
// Copy the value in an opaque buffer so we can compare at the end of the function if it changed at all.
const ImGuiDataTypeInfo* type_info = DataTypeGetInfo(data_type);
ImGuiDataTypeTempStorage data_backup;
ImGuiDataTypeStorage data_backup;
memcpy(&data_backup, p_data, type_info->Size);
// Sanitize format
@ -3471,7 +3471,7 @@ bool ImGui::TempInputScalar(const ImRect& bb, ImGuiID id, const char* label, ImG
{
// Backup old value
size_t data_type_size = type_info->Size;
ImGuiDataTypeTempStorage data_backup;
ImGuiDataTypeStorage data_backup;
memcpy(&data_backup, p_data, data_type_size);
// Apply new value (or operations) then clamp
@ -6497,7 +6497,7 @@ void ImGui::SetNextItemOpen(bool is_open, ImGuiCond cond)
return;
g.NextItemData.Flags |= ImGuiNextItemDataFlags_HasOpen;
g.NextItemData.OpenVal = is_open;
g.NextItemData.OpenCond = cond ? cond : ImGuiCond_Always;
g.NextItemData.OpenCond = (ImU8)(cond ? cond : ImGuiCond_Always);
}
// CollapsingHeader returns true when opened but do not indent nor push into the ID stack (because of the ImGuiTreeNodeFlags_NoTreePushOnOpen flag).