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Moved IM_MALLOC/IM_FREE/etc. to IO structure members one can set at runtime.

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This commit is contained in:
ocornut 2014-09-24 18:01:07 +01:00
parent 85672fec2e
commit fec4232c79
3 changed files with 73 additions and 51 deletions
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10
imconfig.h
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@ -1,14 +1,11 @@
//-----------------------------------------------------------------------------
// USER IMPLEMENTATION
// This file contains compile-time options for ImGui.
// Other options (memory allocation overrides, callbacks, etc.) can be set at runtime via the ImGuiIO structure - ImGui::GetIO().
//-----------------------------------------------------------------------------
#pragma once
//---- Define your own malloc/free/realloc functions if you want to override internal memory allocations for ImGui
//#define IM_MALLOC(_SIZE) MyMalloc(_SIZE) // void* MyMalloc(size_t size);
//#define IM_FREE(_PTR) MyFree(_PTR) // void MyFree(void *ptr);
//#define IM_REALLOC(_PTR, _SIZE) MyRealloc(_PTR, _SIZE) // void* MyRealloc(void *ptr, size_t size);
//---- Define your own ImVector<> type if you don't want to use the provided implementation defined in imgui.h
//#include <vector>
//#define ImVector std::vector
@ -17,7 +14,7 @@
//---- Define assertion handler. Defaults to calling assert().
//#define IM_ASSERT(_EXPR) MyAssert(_EXPR)
//---- Don't implement default clipboard handlers for Windows (so as not to link with OpenClipboard(), etc.)
//---- Don't implement default clipboard handlers for Windows (so as not to link with OpenClipboard() and others Win32 functions)
//#define IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS
//---- Include imgui_user.cpp at the end of imgui.cpp so you can include code that extends ImGui using its private data/functions.
@ -35,6 +32,7 @@
*/
//---- Freely implement extra functions within the ImGui:: namespace.
//---- Declare helpers or widgets implemented in imgui_user.cpp or elsewhere, so end-user doesn't need to include multiple files.
//---- e.g. you can create variants of the ImGui::Value() helper for your low-level math types.
/*
namespace ImGui

77
imgui.cpp
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@ -139,7 +139,8 @@
API CHANGES
===========
- 2014/09/24 (1.12) renamed SetFontScale() to SetWindowFontScale().
- 2014/09/24 (1.12) renamed SetFontScale() to SetWindowFontScale()
- 2014/09/24 (1.12) moved IM_MALLOC/IM_REALLOC/IM_FREE preprocessor defines to IO.MemAllocFn/IO.MemReallocFn/IO.MemFreeFn
- 2014/08/30 (1.09) removed IO.FontHeight (now computed automatically)
- 2014/08/30 (1.09) moved IMGUI_FONT_TEX_UV_FOR_WHITE preprocessor define to IO.FontTexUvForWhite
- 2014/08/28 (1.09) changed the behaviour of IO.PixelCenterOffset following various rendering fixes
@ -324,7 +325,12 @@ ImGuiIO::ImGuiIO()
MouseDoubleClickTime = 0.30f;
MouseDoubleClickMaxDist = 6.0f;
// Platform dependant default implementations
// Memory management functions, default to posix
MemAllocFn = malloc;
MemReallocFn = realloc;
MemFreeFn = free;
// Platform dependant default implementations
GetClipboardTextFn = GetClipboardTextFn_DefaultImpl;
SetClipboardTextFn = SetClipboardTextFn_DefaultImpl;
}
@ -393,7 +399,7 @@ static int ImStricmp(const char* str1, const char* str2)
static char* ImStrdup(const char *str)
{
char *buff = (char*)IM_MALLOC(strlen(str) + 1);
char *buff = (char*)ImGui::MemAlloc(strlen(str) + 1);
IM_ASSERT(buff);
strcpy(buff, str);
return buff;
@ -641,7 +647,7 @@ struct ImGuiIniData
bool Collapsed;
ImGuiIniData() { memset(this, 0, sizeof(*this)); }
~ImGuiIniData() { if (Name) { IM_FREE(Name); Name = NULL; } }
~ImGuiIniData() { if (Name) { ImGui::MemFree(Name); Name = NULL; } }
};
struct ImGuiState
@ -998,16 +1004,16 @@ ImGuiWindow::ImGuiWindow(const char* name, ImVec2 default_pos, ImVec2 default_si
FocusIdxRequestCurrent = IM_INT_MAX;
FocusIdxRequestNext = IM_INT_MAX;
DrawList = (ImDrawList*)IM_MALLOC(sizeof(ImDrawList));
DrawList = (ImDrawList*)ImGui::MemAlloc(sizeof(ImDrawList));
new(DrawList) ImDrawList();
}
ImGuiWindow::~ImGuiWindow()
{
DrawList->~ImDrawList();
IM_FREE(DrawList);
ImGui::MemFree(DrawList);
DrawList = NULL;
IM_FREE(Name);
ImGui::MemFree(Name);
Name = NULL;
}
@ -1077,6 +1083,21 @@ void ImGuiWindow::AddToRenderList()
namespace ImGui
{
void* MemAlloc(size_t sz)
{
return GImGui.IO.MemAllocFn(sz);
}
void MemFree(void* ptr)
{
return GImGui.IO.MemFreeFn(ptr);
}
void* MemRealloc(void* ptr, size_t sz)
{
return GImGui.IO.MemReallocFn(ptr, sz);
}
static ImGuiIniData* FindWindowSettings(const char* name)
{
ImGuiState& g = GImGui;
@ -1087,7 +1108,7 @@ static ImGuiIniData* FindWindowSettings(const char* name)
if (ImStricmp(ini->Name, name) == 0)
return ini;
}
ImGuiIniData* ini = (ImGuiIniData*)IM_MALLOC(sizeof(ImGuiIniData));
ImGuiIniData* ini = (ImGuiIniData*)ImGui::MemAlloc(sizeof(ImGuiIniData));
new(ini) ImGuiIniData();
ini->Name = ImStrdup(name);
ini->Collapsed = false;
@ -1127,12 +1148,12 @@ static void LoadSettings()
fclose(f);
return;
}
char* f_data = (char*)IM_MALLOC(f_size+1);
char* f_data = (char*)ImGui::MemAlloc(f_size+1);
f_size = fread(f_data, 1, f_size, f); // Text conversion alter read size so let's not be fussy about return value
fclose(f);
if (f_size == 0)
{
IM_FREE(f_data);
ImGui::MemFree(f_data);
return;
}
f_data[f_size] = 0;
@ -1166,7 +1187,7 @@ static void LoadSettings()
line_start = line_end+1;
}
IM_FREE(f_data);
ImGui::MemFree(f_data);
}
static void SaveSettings()
@ -1239,7 +1260,7 @@ void NewFrame()
if (!g.Initialized)
{
// Initialize on first frame
g.LogClipboard = (ImGuiTextBuffer*)IM_MALLOC(sizeof(ImGuiTextBuffer));
g.LogClipboard = (ImGuiTextBuffer*)ImGui::MemAlloc(sizeof(ImGuiTextBuffer));
new(g.LogClipboard) ImGuiTextBuffer();
IM_ASSERT(g.Settings.empty());
@ -1250,7 +1271,7 @@ void NewFrame()
const void* fnt_data;
unsigned int fnt_size;
ImGui::GetDefaultFontData(&fnt_data, &fnt_size, NULL, NULL);
g.IO.Font = (ImBitmapFont*)IM_MALLOC(sizeof(ImBitmapFont));
g.IO.Font = (ImBitmapFont*)ImGui::MemAlloc(sizeof(ImBitmapFont));
new(g.IO.Font) ImBitmapFont();
g.IO.Font->LoadFromMemory(fnt_data, fnt_size);
g.IO.FontYOffset = +1;
@ -1380,7 +1401,7 @@ void Shutdown()
for (size_t i = 0; i < g.Windows.size(); i++)
{
g.Windows[i]->~ImGuiWindow();
IM_FREE(g.Windows[i]);
ImGui::MemFree(g.Windows[i]);
}
g.Windows.clear();
g.CurrentWindowStack.clear();
@ -1391,7 +1412,7 @@ void Shutdown()
for (size_t i = 0; i < g.Settings.size(); i++)
{
g.Settings[i]->~ImGuiIniData();
IM_FREE(g.Settings[i]);
ImGui::MemFree(g.Settings[i]);
}
g.Settings.clear();
g.ColorEditModeStorage.Clear();
@ -1403,20 +1424,20 @@ void Shutdown()
if (g.IO.Font)
{
g.IO.Font->~ImBitmapFont();
IM_FREE(g.IO.Font);
ImGui::MemFree(g.IO.Font);
g.IO.Font = NULL;
}
if (g.PrivateClipboard)
{
IM_FREE(g.PrivateClipboard);
ImGui::MemFree(g.PrivateClipboard);
g.PrivateClipboard = NULL;
}
if (g.LogClipboard)
{
g.LogClipboard->~ImGuiTextBuffer();
IM_FREE(g.LogClipboard);
ImGui::MemFree(g.LogClipboard);
}
g.Initialized = false;
@ -1938,7 +1959,7 @@ bool Begin(const char* name, bool* open, ImVec2 size, float fill_alpha, ImGuiWin
if (flags & (ImGuiWindowFlags_ChildWindow | ImGuiWindowFlags_Tooltip))
{
// Tooltip and child windows don't store settings
window = (ImGuiWindow*)IM_MALLOC(sizeof(ImGuiWindow));
window = (ImGuiWindow*)ImGui::MemAlloc(sizeof(ImGuiWindow));
new(window) ImGuiWindow(name, ImVec2(0,0), size);
}
else
@ -1947,7 +1968,7 @@ bool Begin(const char* name, bool* open, ImVec2 size, float fill_alpha, ImGuiWin
if (settings && ImLength(settings->Size) > 0.0f && !(flags & ImGuiWindowFlags_NoResize))// && ImLengthsize) == 0.0f)
size = settings->Size;
window = (ImGuiWindow*)IM_MALLOC(sizeof(ImGuiWindow));
window = (ImGuiWindow*)ImGui::MemAlloc(sizeof(ImGuiWindow));
new(window) ImGuiWindow(name, g.NewWindowDefaultPos, size);
if (settings->Pos.x != FLT_MAX)
@ -4068,7 +4089,7 @@ bool InputText(const char* label, char* buf, size_t buf_size, ImGuiInputTextFlag
{
// Remove new-line from pasted buffer
size_t clipboard_len = strlen(clipboard);
char* clipboard_filtered = (char*)IM_MALLOC(clipboard_len+1);
char* clipboard_filtered = (char*)ImGui::MemAlloc(clipboard_len+1);
int clipboard_filtered_len = 0;
for (int i = 0; clipboard[i]; i++)
{
@ -4079,7 +4100,7 @@ bool InputText(const char* label, char* buf, size_t buf_size, ImGuiInputTextFlag
}
clipboard_filtered[clipboard_filtered_len] = 0;
stb_textedit_paste(&edit_state, &edit_state.StbState, clipboard_filtered, clipboard_filtered_len);
IM_FREE(clipboard_filtered);
ImGui::MemFree(clipboard_filtered);
}
}
else if (g.IO.InputCharacters[0])
@ -5206,7 +5227,7 @@ ImBitmapFont::ImBitmapFont()
void ImBitmapFont::Clear()
{
if (Data && DataOwned)
IM_FREE(Data);
ImGui::MemFree(Data);
Data = NULL;
DataOwned = false;
Info = NULL;
@ -5242,7 +5263,7 @@ bool ImBitmapFont::LoadFromFile(const char* filename)
fclose(f);
return false;
}
if ((Data = (unsigned char*)IM_MALLOC(DataSize)) == NULL)
if ((Data = (unsigned char*)ImGui::MemAlloc(DataSize)) == NULL)
{
fclose(f);
return false;
@ -5250,7 +5271,7 @@ bool ImBitmapFont::LoadFromFile(const char* filename)
if (fread(Data, 1, DataSize, f) != DataSize)
{
fclose(f);
IM_FREE(Data);
ImGui::MemFree(Data);
return false;
}
fclose(f);
@ -5493,7 +5514,7 @@ static const char* GetClipboardTextFn_DefaultImpl()
static char* buf_local = NULL;
if (buf_local)
{
IM_FREE(buf_local);
ImGui::MemFree(buf_local);
buf_local = NULL;
}
if (!OpenClipboard(NULL))
@ -5541,12 +5562,12 @@ static void SetClipboardTextFn_DefaultImpl(const char* text, const char* text_en
{
if (GImGui.PrivateClipboard)
{
IM_FREE(GImGui.PrivateClipboard);
ImGui::MemFree(GImGui.PrivateClipboard);
GImGui.PrivateClipboard = NULL;
}
if (!text_end)
text_end = text + strlen(text);
GImGui.PrivateClipboard = (char*)IM_MALLOC((size_t)(text_end - text) + 1);
GImGui.PrivateClipboard = (char*)ImGui::MemAlloc((size_t)(text_end - text) + 1);
memcpy(GImGui.PrivateClipboard, text, (size_t)(text_end - text));
GImGui.PrivateClipboard[(size_t)(text_end - text)] = 0;
}

37
imgui.h
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@ -1,4 +1,4 @@
// ImGui library v1.11
// ImGui library v1.11+
// See .cpp file for commentary.
// See ImGui::ShowTestWindow() for sample code.
// Read 'Programmer guide' in .cpp for notes on how to setup ImGui in your codebase.
@ -19,18 +19,6 @@ struct ImGuiWindow;
#include <stdarg.h> // va_list
#include <stdlib.h> // NULL, malloc
#ifndef IM_MALLOC
#define IM_MALLOC(_SIZE) malloc((_SIZE))
#endif
#ifndef IM_FREE
#define IM_FREE(_PTR) free((_PTR))
#endif
#ifndef IM_REALLOC
#define IM_REALLOC(_PTR, _SIZE) realloc((_PTR), (_SIZE))
#endif
#ifndef IM_ASSERT
#include <assert.h>
#define IM_ASSERT(_EXPR) assert(_EXPR)
@ -67,8 +55,17 @@ struct ImVec4
#endif
};
namespace ImGui
{
// Proxy functions to access the MemAllocFn/MemFreeFn/MemReallocFn pointers in ImGui::GetIO(). The only reason they exist here is to allow ImVector<> to compile inline.
void* MemAlloc(size_t sz);
void MemFree(void* ptr);
void* MemRealloc(void* ptr, size_t sz);
};
// 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).
// this implementation does NOT call c++ constructors! we don't need them! also only provide the minimum functionalities we need.
// Use '#define ImVector std::vector' if you want to use the STL type or your own type.
// Our implementation does NOT call c++ constructors! because the data types we use don't need them (but that could be added as well). Only provide the minimum functionalities we need.
#ifndef ImVector
template<typename T>
class ImVector
@ -84,7 +81,7 @@ public:
typedef const value_type* const_iterator;
ImVector() { Size = Capacity = 0; Data = NULL; }
~ImVector() { if (Data) IM_FREE(Data); }
~ImVector() { if (Data) ImGui::MemFree(Data); }
inline bool empty() const { return Size == 0; }
inline size_t size() const { return Size; }
@ -95,7 +92,7 @@ public:
inline value_type& operator[](size_t i) { IM_ASSERT(i < Size); return Data[i]; }
inline const value_type& operator[](size_t i) const { IM_ASSERT(i < Size); return Data[i]; }
inline void clear() { if (Data) { Size = Capacity = 0; IM_FREE(Data); Data = NULL; } }
inline void clear() { if (Data) { Size = Capacity = 0; ImGui::MemFree(Data); Data = NULL; } }
inline iterator begin() { return Data; }
inline const_iterator begin() const { return Data; }
inline iterator end() { return Data + Size; }
@ -106,7 +103,7 @@ public:
inline const value_type& back() const { IM_ASSERT(Size > 0); return at(Size-1); }
inline void swap(ImVector<T>& rhs) { const size_t rhs_size = rhs.Size; rhs.Size = Size; Size = rhs_size; const size_t rhs_cap = rhs.Capacity; rhs.Capacity = Capacity; Capacity = rhs_cap; value_type* rhs_data = rhs.Data; rhs.Data = Data; Data = rhs_data; }
inline void reserve(size_t new_capacity) { Data = (value_type*)IM_REALLOC(Data, new_capacity * sizeof(value_type)); Capacity = new_capacity; }
inline void reserve(size_t new_capacity) { Data = (value_type*)ImGui::MemRealloc(Data, new_capacity * sizeof(value_type)); Capacity = new_capacity; }
inline void resize(size_t new_size) { if (new_size > Capacity) reserve(new_size); Size = new_size; }
inline void push_back(const value_type& v) { if (Size == Capacity) reserve(Capacity ? Capacity * 2 : 4); Data[Size++] = v; }
@ -424,6 +421,12 @@ struct ImGuiIO
const char* (*GetClipboardTextFn)();
void (*SetClipboardTextFn)(const char* text, const char* text_end);
// Settings - Memory allocation
// Default to posix malloc/realloc/free functions.
void* (*MemAllocFn)(size_t sz);
void* (*MemReallocFn)(void* ptr, size_t sz);
void (*MemFreeFn)(void* ptr);
// Input - Fill before calling NewFrame()
ImVec2 MousePos; // Mouse position, in pixels (set to -1,-1 if no mouse / on another screen, etc.)
bool MouseDown[5]; // Mouse buttons. ImGui itself only uses button 0 (left button) but you can use others as storage for convenience.