Drezil/imgui
1
0
Fork 0
mirror of https://github.com/Drezil/imgui.git synced 2024-12-19 06:26:35 +00:00
Code Issues Packages Projects Releases Wiki Activity

Internals: Added ImPool helper structure. Moved ImVec1f.

Browse Source
This commit is contained in:
omar 2018-09-06 15:34:03 +02:00
parent 741bdf151a
commit c039a77d21
1 changed files with 33 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

41
imgui_internal.h
View File

@ -211,18 +211,32 @@ static inline ImVec2 ImRotate(const ImVec2& v, float cos_a, float sin_a)
static inline float ImLinearSweep(float current, float target, float speed) { if (current < target) return ImMin(current + speed, target); if (current > target) return ImMax(current - speed, target); return current; }
static inline ImVec2 ImMul(const ImVec2& lhs, const ImVec2& rhs) { return ImVec2(lhs.x * rhs.x, lhs.y * rhs.y); }
// Helper: ImPool<>. Basic keyed storage for contiguous instances, slow/amortized insertion, O(1) indexable, O(Log N) queries by ID over a dense/hot buffer
// Creation/Erasure invalidate all pointers, but indexes are valid as long as the object lifetime.
template<typename T>
struct IMGUI_API ImPool
{
ImVector<T> Data; // Contiguous data
ImGuiStorage Map; // ID->Index
int FreeIdx; // Next free idx to use
ImPool() { FreeIdx = 0; }
~ImPool() { Clear(); }
T* GetByKey(ImGuiID key) { int idx = Map.GetInt(key, -1); return (idx != -1) ? &Data[idx] : NULL; }
T* GetByIndex(int n) { return &Data[n]; }
int GetIndex(const T* p) const { IM_ASSERT(p >= Data.Data && p < Data.Data + Data.Size); return (int)(p - Data.Data); }
T* GetOrAddByKey(ImGuiID key) { int* p_idx = Map.GetIntRef(key, -1); if (*p_idx != -1) return &Data[*p_idx]; *p_idx = FreeIdx; return Add(); }
void Clear() { for (int n = 0; n < Map.Data.Size; n++) { int idx = Map.Data[n].val_i; if (idx != -1) Data[idx].~T(); } Map.Clear(); Data.clear(); FreeIdx = 0; }
T* Add() { int idx = FreeIdx; if (idx == Data.Size) { Data.resize(Data.Size + 1); FreeIdx++; } else { FreeIdx = *(int*)&Data[idx]; } IM_PLACEMENT_NEW(&Data[idx]) T(); return &Data[idx]; }
void Remove(ImGuiID key, const T* p) { Remove(key, GetIndex(p)); }
void Remove(ImGuiID key, int idx) { Data[idx].~T(); *(int*)&Data[idx] = FreeIdx; FreeIdx = idx; Map.SetInt(key, -1); }
};
typedef int ImPoolIdx;
//-----------------------------------------------------------------------------
// Types
//-----------------------------------------------------------------------------
// 1D vector (this odd construct is used to facilitate the transition between 1D and 2D and maintenance of some patches)
struct ImVec1
{
float x;
ImVec1() { x = 0.0f; }
ImVec1(float _x) { x = _x; }
};
enum ImGuiButtonFlags_
{
ImGuiButtonFlags_None = 0,
@ -366,6 +380,14 @@ enum ImGuiPopupPositionPolicy
ImGuiPopupPositionPolicy_ComboBox
};
// 1D vector (this odd construct is used to facilitate the transition between 1D and 2D and maintenance of some patches)
struct ImVec1
{
float x;
ImVec1() { x = 0.0f; }
ImVec1(float _x) { x = _x; }
};
// 2D axis aligned bounding-box
// NB: we can't rely on ImVec2 math operators being available here
struct IMGUI_API ImRect
@ -632,7 +654,10 @@ struct ImGuiNextWindowData
}
};
//-----------------------------------------------------------------------------
// Main imgui context
//-----------------------------------------------------------------------------
struct ImGuiContext
{
bool Initialized;