mirror of https://github.com/ocornut/imgui
Moved ImVector higher up in imgui :( because we will need it in ImGuiIO.
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omar
parent
8b5f635624
commit
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139
imgui.h
139
imgui.h
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@ -13,11 +13,12 @@ Index of this file:
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// Forward declarations and basic types
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// ImGui API (Dear ImGui end-user API)
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// Flags & Enumerations
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// ImVector
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// ImGuiStyle
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// ImGuiIO
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// Misc data structures (ImGuiInputTextCallbackData, ImGuiSizeCallbackData, ImGuiPayload)
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// Obsolete functions
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// Helpers (ImVector, ImGuiOnceUponAFrame, ImGuiTextFilter, ImGuiTextBuffer, ImGuiStorage, ImGuiListClipper, ImColor)
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// Helpers (ImGuiOnceUponAFrame, ImGuiTextFilter, ImGuiTextBuffer, ImGuiStorage, ImGuiListClipper, ImColor)
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// Draw List API (ImDrawCmd, ImDrawIdx, ImDrawVert, ImDrawChannel, ImDrawListFlags, ImDrawList, ImDrawData)
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// Font API (ImFontConfig, ImFontGlyph, ImFontAtlasFlags, ImFontAtlas, ImFont)
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@ -1148,6 +1149,77 @@ enum ImGuiCond_
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#endif
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};
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//-----------------------------------------------------------------------------
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// Helper: ImVector<>
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// Lightweight std::vector<>-like class to avoid dragging dependencies (also: some implementations of STL with debug enabled are absurdly slow, we bypass it so our code runs fast in debug).
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// You generally do NOT need to care or use this ever. But we need to make it available in imgui.h because some of our data structures are relying on it.
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// Important: our implementation does NOT call C++ constructors/destructors, we treat everything as raw data! This is intentional but be extra mindful of that,
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// do NOT use this class as a std::vector replacement in your own code!
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//-----------------------------------------------------------------------------
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template<typename T>
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class ImVector
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{
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public:
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int Size;
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int Capacity;
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T* Data;
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typedef T value_type;
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typedef value_type* iterator;
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typedef const value_type* const_iterator;
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inline ImVector() { Size = Capacity = 0; Data = NULL; }
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inline ~ImVector() { if (Data) ImGui::MemFree(Data); }
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inline ImVector(const ImVector<T>& src) { Size = Capacity = 0; Data = NULL; operator=(src); }
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inline ImVector<T>& operator=(const ImVector<T>& src) { clear(); resize(src.Size); memcpy(Data, src.Data, (size_t)Size * sizeof(value_type)); return *this; }
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inline bool empty() const { return Size == 0; }
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inline int size() const { return Size; }
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inline int capacity() const { return Capacity; }
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inline value_type& operator[](int i) { IM_ASSERT(i < Size); return Data[i]; }
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inline const value_type& operator[](int i) const { IM_ASSERT(i < Size); return Data[i]; }
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inline void clear() { if (Data) { Size = Capacity = 0; ImGui::MemFree(Data); Data = NULL; } }
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inline iterator begin() { return Data; }
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inline const_iterator begin() const { return Data; }
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inline iterator end() { return Data + Size; }
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inline const_iterator end() const { return Data + Size; }
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inline value_type& front() { IM_ASSERT(Size > 0); return Data[0]; }
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inline const value_type& front() const { IM_ASSERT(Size > 0); return Data[0]; }
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inline value_type& back() { IM_ASSERT(Size > 0); return Data[Size - 1]; }
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inline const value_type& back() const { IM_ASSERT(Size > 0); return Data[Size - 1]; }
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inline void swap(ImVector<value_type>& rhs) { int rhs_size = rhs.Size; rhs.Size = Size; Size = rhs_size; int rhs_cap = rhs.Capacity; rhs.Capacity = Capacity; Capacity = rhs_cap; value_type* rhs_data = rhs.Data; rhs.Data = Data; Data = rhs_data; }
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inline int _grow_capacity(int sz) const { int new_capacity = Capacity ? (Capacity + Capacity/2) : 8; return new_capacity > sz ? new_capacity : sz; }
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inline void resize(int new_size) { if (new_size > Capacity) reserve(_grow_capacity(new_size)); Size = new_size; }
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inline void resize(int new_size,const value_type& v){ if (new_size > Capacity) reserve(_grow_capacity(new_size)); if (new_size > Size) for (int n = Size; n < new_size; n++) memcpy(&Data[n], &v, sizeof(v)); Size = new_size; }
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inline void reserve(int new_capacity)
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{
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if (new_capacity <= Capacity)
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return;
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value_type* new_data = (value_type*)ImGui::MemAlloc((size_t)new_capacity * sizeof(value_type));
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if (Data)
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{
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memcpy(new_data, Data, (size_t)Size * sizeof(value_type));
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ImGui::MemFree(Data);
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}
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Data = new_data;
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Capacity = new_capacity;
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}
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// NB: It is illegal to call push_back/push_front/insert with a reference pointing inside the ImVector data itself! e.g. v.push_back(v[10]) is forbidden.
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inline void push_back(const value_type& v) { if (Size == Capacity) reserve(_grow_capacity(Size + 1)); memcpy(&Data[Size], &v, sizeof(v)); Size++; }
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inline void pop_back() { IM_ASSERT(Size > 0); Size--; }
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inline void push_front(const value_type& v) { if (Size == 0) push_back(v); else insert(Data, v); }
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inline iterator erase(const_iterator it) { IM_ASSERT(it >= Data && it < Data+Size); const ptrdiff_t off = it - Data; memmove(Data + off, Data + off + 1, ((size_t)Size - (size_t)off - 1) * sizeof(value_type)); Size--; return Data + off; }
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inline iterator erase(const_iterator it, const_iterator it_last){ IM_ASSERT(it >= Data && it < Data+Size && it_last > it && it_last <= Data+Size); const ptrdiff_t count = it_last - it; const ptrdiff_t off = it - Data; memmove(Data + off, Data + off + count, ((size_t)Size - (size_t)off - count) * sizeof(value_type)); Size -= (int)count; return Data + off; }
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inline iterator erase_unsorted(const_iterator it) { IM_ASSERT(it >= Data && it < Data+Size); const ptrdiff_t off = it - Data; if (it < Data+Size-1) memcpy(Data + off, Data + Size - 1, sizeof(value_type)); Size--; return Data + off; }
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inline iterator insert(const_iterator it, const value_type& v) { IM_ASSERT(it >= Data && it <= Data+Size); const ptrdiff_t off = it - Data; if (Size == Capacity) reserve(_grow_capacity(Size + 1)); if (off < (int)Size) memmove(Data + off + 1, Data + off, ((size_t)Size - (size_t)off) * sizeof(value_type)); memcpy(&Data[off], &v, sizeof(v)); Size++; return Data + off; }
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inline bool contains(const value_type& v) const { const T* data = Data; const T* data_end = Data + Size; while (data < data_end) if (*data++ == v) return true; return false; }
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inline int index_from_pointer(const_iterator it) const { IM_ASSERT(it >= Data && it <= Data+Size); const ptrdiff_t off = it - Data; return (int)off; }
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};
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//-----------------------------------------------------------------------------
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// ImGuiStyle
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// You may modify the ImGui::GetStyle() main instance during initialization and before NewFrame().
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@ -1447,71 +1519,6 @@ typedef ImGuiInputTextCallbackData ImGuiTextEditCallbackData;
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// Helpers
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//-----------------------------------------------------------------------------
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// Helper: Lightweight std::vector<> like class to avoid dragging dependencies (also: Windows implementation of STL with debug enabled is absurdly slow, so let's bypass it so our code runs fast in debug).
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// *Important* Our implementation does NOT call C++ constructors/destructors. This is intentional, we do not require it but you have to be mindful of that. Do _not_ use this class as a std::vector replacement in your code!
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template<typename T>
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class ImVector
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{
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public:
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int Size;
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int Capacity;
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T* Data;
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typedef T value_type;
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typedef value_type* iterator;
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typedef const value_type* const_iterator;
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inline ImVector() { Size = Capacity = 0; Data = NULL; }
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inline ~ImVector() { if (Data) ImGui::MemFree(Data); }
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inline ImVector(const ImVector<T>& src) { Size = Capacity = 0; Data = NULL; operator=(src); }
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inline ImVector<T>& operator=(const ImVector<T>& src) { clear(); resize(src.Size); memcpy(Data, src.Data, (size_t)Size * sizeof(value_type)); return *this; }
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inline bool empty() const { return Size == 0; }
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inline int size() const { return Size; }
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inline int capacity() const { return Capacity; }
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inline value_type& operator[](int i) { IM_ASSERT(i < Size); return Data[i]; }
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inline const value_type& operator[](int i) const { IM_ASSERT(i < Size); return Data[i]; }
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inline void clear() { if (Data) { Size = Capacity = 0; ImGui::MemFree(Data); Data = NULL; } }
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inline iterator begin() { return Data; }
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inline const_iterator begin() const { return Data; }
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inline iterator end() { return Data + Size; }
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inline const_iterator end() const { return Data + Size; }
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inline value_type& front() { IM_ASSERT(Size > 0); return Data[0]; }
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inline const value_type& front() const { IM_ASSERT(Size > 0); return Data[0]; }
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inline value_type& back() { IM_ASSERT(Size > 0); return Data[Size - 1]; }
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inline const value_type& back() const { IM_ASSERT(Size > 0); return Data[Size - 1]; }
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inline void swap(ImVector<value_type>& rhs) { int rhs_size = rhs.Size; rhs.Size = Size; Size = rhs_size; int rhs_cap = rhs.Capacity; rhs.Capacity = Capacity; Capacity = rhs_cap; value_type* rhs_data = rhs.Data; rhs.Data = Data; Data = rhs_data; }
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inline int _grow_capacity(int sz) const { int new_capacity = Capacity ? (Capacity + Capacity/2) : 8; return new_capacity > sz ? new_capacity : sz; }
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inline void resize(int new_size) { if (new_size > Capacity) reserve(_grow_capacity(new_size)); Size = new_size; }
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inline void resize(int new_size,const value_type& v){ if (new_size > Capacity) reserve(_grow_capacity(new_size)); if (new_size > Size) for (int n = Size; n < new_size; n++) memcpy(&Data[n], &v, sizeof(v)); Size = new_size; }
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inline void reserve(int new_capacity)
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{
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if (new_capacity <= Capacity)
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return;
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value_type* new_data = (value_type*)ImGui::MemAlloc((size_t)new_capacity * sizeof(value_type));
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if (Data)
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{
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memcpy(new_data, Data, (size_t)Size * sizeof(value_type));
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ImGui::MemFree(Data);
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}
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Data = new_data;
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Capacity = new_capacity;
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}
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// NB: It is illegal to call push_back/push_front/insert with a reference pointing inside the ImVector data itself! e.g. v.push_back(v[10]) is forbidden.
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inline void push_back(const value_type& v) { if (Size == Capacity) reserve(_grow_capacity(Size + 1)); memcpy(&Data[Size], &v, sizeof(v)); Size++; }
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inline void pop_back() { IM_ASSERT(Size > 0); Size--; }
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inline void push_front(const value_type& v) { if (Size == 0) push_back(v); else insert(Data, v); }
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inline iterator erase(const_iterator it) { IM_ASSERT(it >= Data && it < Data+Size); const ptrdiff_t off = it - Data; memmove(Data + off, Data + off + 1, ((size_t)Size - (size_t)off - 1) * sizeof(value_type)); Size--; return Data + off; }
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inline iterator erase(const_iterator it, const_iterator it_last){ IM_ASSERT(it >= Data && it < Data+Size && it_last > it && it_last <= Data+Size); const ptrdiff_t count = it_last - it; const ptrdiff_t off = it - Data; memmove(Data + off, Data + off + count, ((size_t)Size - (size_t)off - count) * sizeof(value_type)); Size -= (int)count; return Data + off; }
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inline iterator erase_unsorted(const_iterator it) { IM_ASSERT(it >= Data && it < Data+Size); const ptrdiff_t off = it - Data; if (it < Data+Size-1) memcpy(Data + off, Data + Size - 1, sizeof(value_type)); Size--; return Data + off; }
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inline iterator insert(const_iterator it, const value_type& v) { IM_ASSERT(it >= Data && it <= Data+Size); const ptrdiff_t off = it - Data; if (Size == Capacity) reserve(_grow_capacity(Size + 1)); if (off < (int)Size) memmove(Data + off + 1, Data + off, ((size_t)Size - (size_t)off) * sizeof(value_type)); memcpy(&Data[off], &v, sizeof(v)); Size++; return Data + off; }
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inline bool contains(const value_type& v) const { const T* data = Data; const T* data_end = Data + Size; while (data < data_end) if (*data++ == v) return true; return false; }
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inline int index_from_pointer(const_iterator it) const { IM_ASSERT(it >= Data && it <= Data+Size); const ptrdiff_t off = it - Data; return (int)off; }
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};
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// Helper: IM_NEW(), IM_PLACEMENT_NEW(), IM_DELETE() macros to call MemAlloc + Placement New, Placement Delete + MemFree
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// We call C++ constructor on own allocated memory via the placement "new(ptr) Type()" syntax.
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// Defining a custom placement new() with a dummy parameter allows us to bypass including <new> which on some platforms complains when user has disabled exceptions.
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