Misc: Added IM_MALLOC/IM_FREE macros mimicking IM_NEW/IM_DELETE so user doesn't need to revert to using the ImGui::MemAlloc()/MemFree() calls directly.
This commit is contained in:
omar
parent
1c3311e4d6
commit
c8fd4afd75
@ -44,6 +44,8 @@ Other Changes:
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- GetMouseDragDelta(): also returns the delta on the mouse button released frame. (#2419)
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- GetMouseDragDelta(): verify that mouse positions are valid otherwise returns zero.
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- Inputs: Also add support for horizontal scroll with Shift+Mouse Wheel. (#2424, #1463) [@LucaRood]
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- Misc: Added IM_MALLOC/IM_FREE macros mimicking IM_NEW/IM_DELETE so user doesn't need to revert
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to using the ImGui::MemAlloc()/MemFree() calls directly.
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- Examples: OpenGL: Added a dummy GL call + comments in ImGui_ImplOpenGL3_Init() to detect uninitialized
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GL function loaders early, and help users understand what they are missing. (#2421)
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- Examples: OpenGL3: Minor tweaks + not calling glBindBuffer more than necessary in the render loop.
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20
imgui.cpp
20
imgui.cpp
@ -1307,7 +1307,7 @@ void ImStrncpy(char* dst, const char* src, size_t count)
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char* ImStrdup(const char* str)
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{
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size_t len = strlen(str);
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void* buf = ImGui::MemAlloc(len + 1);
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void* buf = IM_ALLOC(len + 1);
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return (char*)memcpy(buf, (const void*)str, len + 1);
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}
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@ -1317,8 +1317,8 @@ char* ImStrdupcpy(char* dst, size_t* p_dst_size, const char* src)
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size_t src_size = strlen(src) + 1;
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if (dst_buf_size < src_size)
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{
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ImGui::MemFree(dst);
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dst = (char*)ImGui::MemAlloc(src_size);
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IM_FREE(dst);
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dst = (char*)IM_ALLOC(src_size);
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if (p_dst_size)
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*p_dst_size = src_size;
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}
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@ -1527,7 +1527,7 @@ FILE* ImFileOpen(const char* filename, const char* mode)
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}
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// Load file content into memory
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// Memory allocated with ImGui::MemAlloc(), must be freed by user using ImGui::MemFree()
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// Memory allocated with IM_ALLOC(), must be freed by user using IM_FREE() == ImGui::MemFree()
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void* ImFileLoadToMemory(const char* filename, const char* file_open_mode, size_t* out_file_size, int padding_bytes)
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{
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IM_ASSERT(filename && file_open_mode);
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@ -1546,7 +1546,7 @@ void* ImFileLoadToMemory(const char* filename, const char* file_open_mode, size_
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}
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size_t file_size = (size_t)file_size_signed;
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void* file_data = ImGui::MemAlloc(file_size + padding_bytes);
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void* file_data = IM_ALLOC(file_size + padding_bytes);
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if (file_data == NULL)
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{
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fclose(f);
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@ -1555,7 +1555,7 @@ void* ImFileLoadToMemory(const char* filename, const char* file_open_mode, size_
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if (fread(file_data, 1, file_size, f) != file_size)
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{
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fclose(f);
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ImGui::MemFree(file_data);
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IM_FREE(file_data);
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return NULL;
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}
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if (padding_bytes > 0)
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@ -2962,6 +2962,7 @@ float ImGui::CalcWrapWidthForPos(const ImVec2& pos, float wrap_pos_x)
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return ImMax(wrap_pos_x - pos.x, 1.0f);
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}
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// IM_ALLOC() == ImGui::MemAlloc()
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void* ImGui::MemAlloc(size_t size)
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{
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if (ImGuiContext* ctx = GImGui)
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@ -2969,6 +2970,7 @@ void* ImGui::MemAlloc(size_t size)
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return GImAllocatorAllocFunc(size, GImAllocatorUserData);
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}
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// IM_FREE() == ImGui::MemFree()
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void ImGui::MemFree(void* ptr)
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{
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if (ptr)
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@ -9093,7 +9095,7 @@ void ImGui::LoadIniSettingsFromDisk(const char* ini_filename)
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if (!file_data)
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return;
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LoadIniSettingsFromMemory(file_data, (size_t)file_data_size);
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ImGui::MemFree(file_data);
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IM_FREE(file_data);
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}
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ImGuiSettingsHandler* ImGui::FindSettingsHandler(const char* type_name)
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@ -9117,7 +9119,7 @@ void ImGui::LoadIniSettingsFromMemory(const char* ini_data, size_t ini_size)
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// For our convenience and to make the code simpler, we'll also write zero-terminators within the buffer. So let's create a writable copy..
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if (ini_size == 0)
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ini_size = strlen(ini_data);
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char* buf = (char*)ImGui::MemAlloc(ini_size + 1);
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char* buf = (char*)IM_ALLOC(ini_size + 1);
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char* buf_end = buf + ini_size;
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memcpy(buf, ini_data, ini_size);
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buf[ini_size] = 0;
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@ -9164,7 +9166,7 @@ void ImGui::LoadIniSettingsFromMemory(const char* ini_data, size_t ini_size)
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entry_handler->ReadLineFn(&g, entry_handler, entry_data, line);
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}
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}
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ImGui::MemFree(buf);
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IM_FREE(buf);
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g.SettingsLoaded = true;
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}
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33
imgui.h
33
imgui.h
@ -13,6 +13,7 @@ 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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// Memory allocations macros
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// ImVector<>
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// ImGuiStyle
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// ImGuiIO
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@ -1185,6 +1186,22 @@ enum ImGuiCond_
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#endif
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};
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//-----------------------------------------------------------------------------
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// Helpers: Memory allocations macros
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// IM_MALLOC(), IM_FREE(), IM_NEW(), IM_PLACEMENT_NEW(), IM_DELETE()
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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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//-----------------------------------------------------------------------------
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struct ImNewDummy {};
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inline void* operator new(size_t, ImNewDummy, void* ptr) { return ptr; }
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inline void operator delete(void*, ImNewDummy, void*) {} // This is only required so we can use the symmetrical new()
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#define IM_ALLOC(_SIZE) ImGui::MemAlloc(_SIZE)
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#define IM_FREE(_PTR) ImGui::MemFree(_PTR)
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#define IM_PLACEMENT_NEW(_PTR) new(ImNewDummy(), _PTR)
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#define IM_NEW(_TYPE) new(ImNewDummy(), ImGui::MemAlloc(sizeof(_TYPE))) _TYPE
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template<typename T> void IM_DELETE(T* p) { if (p) { p->~T(); ImGui::MemFree(p); } }
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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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@ -1210,7 +1227,7 @@ struct ImVector
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inline ImVector() { Size = Capacity = 0; Data = NULL; }
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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(T)); return *this; }
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inline ~ImVector() { if (Data) ImGui::MemFree(Data); }
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inline ~ImVector() { if (Data) IM_FREE(Data); }
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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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@ -1219,7 +1236,7 @@ struct ImVector
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inline T& operator[](int i) { IM_ASSERT(i < Size); return Data[i]; }
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inline const T& 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 void clear() { if (Data) { Size = Capacity = 0; IM_FREE(Data); Data = NULL; } }
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inline T* begin() { return Data; }
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inline const T* begin() const { return Data; }
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inline T* end() { return Data + Size; }
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@ -1233,7 +1250,7 @@ struct ImVector
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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 T& 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) { if (new_capacity <= Capacity) return; T* new_data = (T*)ImGui::MemAlloc((size_t)new_capacity * sizeof(T)); if (Data) { memcpy(new_data, Data, (size_t)Size * sizeof(T)); ImGui::MemFree(Data); } Data = new_data; Capacity = new_capacity; }
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inline void reserve(int new_capacity) { if (new_capacity <= Capacity) return; T* new_data = (T*)IM_ALLOC((size_t)new_capacity * sizeof(T)); if (Data) { memcpy(new_data, Data, (size_t)Size * sizeof(T)); IM_FREE(Data); } Data = new_data; Capacity = new_capacity; }
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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 T& v) { if (Size == Capacity) reserve(_grow_capacity(Size + 1)); memcpy(&Data[Size], &v, sizeof(v)); Size++; }
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@ -1548,16 +1565,6 @@ typedef ImGuiInputTextCallbackData ImGuiTextEditCallbackData;
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// Helpers
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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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struct ImNewDummy {};
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inline void* operator new(size_t, ImNewDummy, void* ptr) { return ptr; }
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inline void operator delete(void*, ImNewDummy, void*) {} // This is only required so we can use the symmetrical new()
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#define IM_PLACEMENT_NEW(_PTR) new(ImNewDummy(), _PTR)
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#define IM_NEW(_TYPE) new(ImNewDummy(), ImGui::MemAlloc(sizeof(_TYPE))) _TYPE
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template<typename T> void IM_DELETE(T* p) { if (p) { p->~T(); ImGui::MemFree(p); } }
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// Helper: Execute a block of code at maximum once a frame. Convenient if you want to quickly create an UI within deep-nested code that runs multiple times every frame.
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// Usage: static ImGuiOnceUponAFrame oaf; if (oaf) ImGui::Text("This will be called only once per frame");
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struct ImGuiOnceUponAFrame
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@ -130,8 +130,8 @@ namespace IMGUI_STB_NAMESPACE
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#ifndef STB_TRUETYPE_IMPLEMENTATION // in case the user already have an implementation in the _same_ compilation unit (e.g. unity builds)
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#ifndef IMGUI_DISABLE_STB_TRUETYPE_IMPLEMENTATION
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#define STBTT_malloc(x,u) ((void)(u), ImGui::MemAlloc(x))
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#define STBTT_free(x,u) ((void)(u), ImGui::MemFree(x))
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#define STBTT_malloc(x,u) ((void)(u), IM_ALLOC(x))
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#define STBTT_free(x,u) ((void)(u), IM_FREE(x))
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#define STBTT_assert(x) IM_ASSERT(x)
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#define STBTT_fmod(x,y) ImFmod(x,y)
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#define STBTT_sqrt(x) ImSqrt(x)
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@ -1459,7 +1459,7 @@ void ImFontAtlas::ClearInputData()
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for (int i = 0; i < ConfigData.Size; i++)
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if (ConfigData[i].FontData && ConfigData[i].FontDataOwnedByAtlas)
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{
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ImGui::MemFree(ConfigData[i].FontData);
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IM_FREE(ConfigData[i].FontData);
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ConfigData[i].FontData = NULL;
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}
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@ -1480,9 +1480,9 @@ void ImFontAtlas::ClearTexData()
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{
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IM_ASSERT(!Locked && "Cannot modify a locked ImFontAtlas between NewFrame() and EndFrame/Render()!");
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if (TexPixelsAlpha8)
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ImGui::MemFree(TexPixelsAlpha8);
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IM_FREE(TexPixelsAlpha8);
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if (TexPixelsRGBA32)
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ImGui::MemFree(TexPixelsRGBA32);
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IM_FREE(TexPixelsRGBA32);
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TexPixelsAlpha8 = NULL;
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TexPixelsRGBA32 = NULL;
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}
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@ -1528,7 +1528,7 @@ void ImFontAtlas::GetTexDataAsRGBA32(unsigned char** out_pixels, int* out_wid
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GetTexDataAsAlpha8(&pixels, NULL, NULL);
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if (pixels)
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{
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TexPixelsRGBA32 = (unsigned int*)ImGui::MemAlloc((size_t)TexWidth * (size_t)TexHeight * 4);
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TexPixelsRGBA32 = (unsigned int*)IM_ALLOC((size_t)TexWidth * (size_t)TexHeight * 4);
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const unsigned char* src = pixels;
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unsigned int* dst = TexPixelsRGBA32;
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for (int n = TexWidth * TexHeight; n > 0; n--)
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@ -1560,7 +1560,7 @@ ImFont* ImFontAtlas::AddFont(const ImFontConfig* font_cfg)
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new_font_cfg.DstFont = Fonts.back();
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if (!new_font_cfg.FontDataOwnedByAtlas)
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{
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new_font_cfg.FontData = ImGui::MemAlloc(new_font_cfg.FontDataSize);
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new_font_cfg.FontData = IM_ALLOC(new_font_cfg.FontDataSize);
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new_font_cfg.FontDataOwnedByAtlas = true;
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memcpy(new_font_cfg.FontData, font_cfg->FontData, (size_t)new_font_cfg.FontDataSize);
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}
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@ -1645,7 +1645,7 @@ ImFont* ImFontAtlas::AddFontFromMemoryTTF(void* ttf_data, int ttf_size, float si
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ImFont* ImFontAtlas::AddFontFromMemoryCompressedTTF(const void* compressed_ttf_data, int compressed_ttf_size, float size_pixels, const ImFontConfig* font_cfg_template, const ImWchar* glyph_ranges)
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{
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const unsigned int buf_decompressed_size = stb_decompress_length((const unsigned char*)compressed_ttf_data);
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unsigned char* buf_decompressed_data = (unsigned char *)ImGui::MemAlloc(buf_decompressed_size);
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unsigned char* buf_decompressed_data = (unsigned char *)IM_ALLOC(buf_decompressed_size);
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stb_decompress(buf_decompressed_data, (const unsigned char*)compressed_ttf_data, (unsigned int)compressed_ttf_size);
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ImFontConfig font_cfg = font_cfg_template ? *font_cfg_template : ImFontConfig();
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@ -1657,10 +1657,10 @@ ImFont* ImFontAtlas::AddFontFromMemoryCompressedTTF(const void* compressed_ttf_d
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ImFont* ImFontAtlas::AddFontFromMemoryCompressedBase85TTF(const char* compressed_ttf_data_base85, float size_pixels, const ImFontConfig* font_cfg, const ImWchar* glyph_ranges)
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{
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int compressed_ttf_size = (((int)strlen(compressed_ttf_data_base85) + 4) / 5) * 4;
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void* compressed_ttf = ImGui::MemAlloc((size_t)compressed_ttf_size);
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void* compressed_ttf = IM_ALLOC((size_t)compressed_ttf_size);
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Decode85((const unsigned char*)compressed_ttf_data_base85, (unsigned char*)compressed_ttf);
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ImFont* font = AddFontFromMemoryCompressedTTF(compressed_ttf, compressed_ttf_size, size_pixels, font_cfg, glyph_ranges);
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ImGui::MemFree(compressed_ttf);
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IM_FREE(compressed_ttf);
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return font;
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}
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@ -1960,7 +1960,7 @@ bool ImFontAtlasBuildWithStbTruetype(ImFontAtlas* atlas)
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// 7. Allocate texture
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atlas->TexHeight = (atlas->Flags & ImFontAtlasFlags_NoPowerOfTwoHeight) ? (atlas->TexHeight + 1) : ImUpperPowerOfTwo(atlas->TexHeight);
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atlas->TexUvScale = ImVec2(1.0f / atlas->TexWidth, 1.0f / atlas->TexHeight);
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atlas->TexPixelsAlpha8 = (unsigned char*)ImGui::MemAlloc(atlas->TexWidth * atlas->TexHeight);
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atlas->TexPixelsAlpha8 = (unsigned char*)IM_ALLOC(atlas->TexWidth * atlas->TexHeight);
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memset(atlas->TexPixelsAlpha8, 0, atlas->TexWidth * atlas->TexHeight);
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spc.pixels = atlas->TexPixelsAlpha8;
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spc.height = atlas->TexHeight;
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@ -3540,7 +3540,7 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
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const int ib = state->HasSelection() ? ImMin(state->Stb.select_start, state->Stb.select_end) : 0;
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const int ie = state->HasSelection() ? ImMax(state->Stb.select_start, state->Stb.select_end) : state->CurLenW;
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const int clipboard_data_len = ImTextCountUtf8BytesFromStr(state->TextW.Data + ib, state->TextW.Data + ie) + 1;
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char* clipboard_data = (char*)MemAlloc(clipboard_data_len * sizeof(char));
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char* clipboard_data = (char*)IM_ALLOC(clipboard_data_len * sizeof(char));
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ImTextStrToUtf8(clipboard_data, clipboard_data_len, state->TextW.Data + ib, state->TextW.Data + ie);
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SetClipboardText(clipboard_data);
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MemFree(clipboard_data);
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@ -3559,7 +3559,7 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
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{
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// Filter pasted buffer
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const int clipboard_len = (int)strlen(clipboard);
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ImWchar* clipboard_filtered = (ImWchar*)MemAlloc((clipboard_len+1) * sizeof(ImWchar));
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ImWchar* clipboard_filtered = (ImWchar*)IM_ALLOC((clipboard_len+1) * sizeof(ImWchar));
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int clipboard_filtered_len = 0;
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for (const char* s = clipboard; *s; )
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{
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@ -398,7 +398,7 @@ bool ImFontAtlasBuildWithFreeType(FT_Library ft_library, ImFontAtlas* atlas, uns
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const int BITMAP_BUFFERS_CHUNK_SIZE = 256 * 1024;
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int buf_bitmap_current_used_bytes = 0;
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ImVector<unsigned char*> buf_bitmap_buffers;
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buf_bitmap_buffers.push_back((unsigned char*)ImGui::MemAlloc(BITMAP_BUFFERS_CHUNK_SIZE));
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buf_bitmap_buffers.push_back((unsigned char*)IM_ALLOC(BITMAP_BUFFERS_CHUNK_SIZE));
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// 4. Gather glyphs sizes so we can pack them in our virtual canvas.
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// 8. Render/rasterize font characters into the texture
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@ -440,7 +440,7 @@ bool ImFontAtlasBuildWithFreeType(FT_Library ft_library, ImFontAtlas* atlas, uns
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if (buf_bitmap_current_used_bytes + bitmap_size_in_bytes > BITMAP_BUFFERS_CHUNK_SIZE)
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{
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buf_bitmap_current_used_bytes = 0;
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buf_bitmap_buffers.push_back((unsigned char*)ImGui::MemAlloc(BITMAP_BUFFERS_CHUNK_SIZE));
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buf_bitmap_buffers.push_back((unsigned char*)IM_ALLOC(BITMAP_BUFFERS_CHUNK_SIZE));
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}
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// Blit rasterized pixels to our temporary buffer and keep a pointer to it.
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@ -493,7 +493,7 @@ bool ImFontAtlasBuildWithFreeType(FT_Library ft_library, ImFontAtlas* atlas, uns
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// 7. Allocate texture
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atlas->TexHeight = (atlas->Flags & ImFontAtlasFlags_NoPowerOfTwoHeight) ? (atlas->TexHeight + 1) : ImUpperPowerOfTwo(atlas->TexHeight);
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atlas->TexUvScale = ImVec2(1.0f / atlas->TexWidth, 1.0f / atlas->TexHeight);
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atlas->TexPixelsAlpha8 = (unsigned char*)ImGui::MemAlloc(atlas->TexWidth * atlas->TexHeight);
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atlas->TexPixelsAlpha8 = (unsigned char*)IM_ALLOC(atlas->TexWidth * atlas->TexHeight);
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memset(atlas->TexPixelsAlpha8, 0, atlas->TexWidth * atlas->TexHeight);
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// 8. Copy rasterized font characters back into the main texture
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@ -557,7 +557,7 @@ bool ImFontAtlasBuildWithFreeType(FT_Library ft_library, ImFontAtlas* atlas, uns
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// Cleanup
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for (int buf_i = 0; buf_i < buf_bitmap_buffers.Size; buf_i++)
|
||||
ImGui::MemFree(buf_bitmap_buffers[buf_i]);
|
||||
IM_FREE(buf_bitmap_buffers[buf_i]);
|
||||
for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
|
||||
src_tmp_array[src_i].~ImFontBuildSrcDataFT();
|
||||
|
||||
@ -567,8 +567,8 @@ bool ImFontAtlasBuildWithFreeType(FT_Library ft_library, ImFontAtlas* atlas, uns
|
||||
}
|
||||
|
||||
// Default memory allocators
|
||||
static void* ImFreeTypeDefaultAllocFunc(size_t size, void* user_data) { IM_UNUSED(user_data); return ImGui::MemAlloc(size); }
|
||||
static void ImFreeTypeDefaultFreeFunc(void* ptr, void* user_data) { IM_UNUSED(user_data); ImGui::MemFree(ptr); }
|
||||
static void* ImFreeTypeDefaultAllocFunc(size_t size, void* user_data) { IM_UNUSED(user_data); return IM_ALLOC(size); }
|
||||
static void ImFreeTypeDefaultFreeFunc(void* ptr, void* user_data) { IM_UNUSED(user_data); IM_FREE(ptr); }
|
||||
|
||||
// Current memory allocators
|
||||
static void* (*GImFreeTypeAllocFunc)(size_t size, void* user_data) = ImFreeTypeDefaultAllocFunc;
|
||||
|
||||
@ -29,7 +29,7 @@ namespace ImGuiFreeType
|
||||
|
||||
IMGUI_API bool BuildFontAtlas(ImFontAtlas* atlas, unsigned int extra_flags = 0);
|
||||
|
||||
// By default ImGuiFreeType will use ImGui::MemAlloc()/MemFree().
|
||||
// By default ImGuiFreeType will use IM_ALLOC()/IM_FREE().
|
||||
// However, as FreeType does lots of allocations we provide a way for the user to redirect it to a separate memory heap if desired:
|
||||
IMGUI_API void SetAllocatorFunctions(void* (*alloc_func)(size_t sz, void* user_data), void (*free_func)(void* ptr, void* user_data), void* user_data = NULL);
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user