imgui/misc/cpp/imgui_stdlib.cpp at master · codeage/imgui · GitHub

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// dear imgui: wrappers for C++ standard library (STL) types (std::string, etc.)

// This is also an example of how you may wrap your own similar types.

// Changelog:

// - v0.10: Initial version. Added InputText() / InputTextMultiline() calls with std::string

// See more C++ related extension (fmt, RAII, syntaxis sugar) on Wiki:

// https://github.com/ocornut/imgui/wiki/Useful-Extensions#cness

#include "imgui.h"

#include "imgui_stdlib.h"

// Clang warnings with -Weverything

#if defined(__clang__)

#pragma clang diagnostic push

#pragma clang diagnostic ignored "-Wsign-conversion" // warning: implicit conversion changes signedness

#endif

struct InputTextCallback_UserData

{

std::string* Str;

ImGuiInputTextCallback ChainCallback;

void* ChainCallbackUserData;

};

static int InputTextCallback(ImGuiInputTextCallbackData* data)

{

InputTextCallback_UserData* user_data = (InputTextCallback_UserData*)data->UserData;

if (data->EventFlag == ImGuiInputTextFlags_CallbackResize)

{

// Resize string callback

// If for some reason we refuse the new length (BufTextLen) and/or capacity (BufSize) we need to set them back to what we want.

std::string* str = user_data->Str;

IM_ASSERT(data->Buf == str->c_str());

str->resize(data->BufTextLen);

data->Buf = (char*)str->c_str();

}

else if (user_data->ChainCallback)

{

// Forward to user callback, if any

data->UserData = user_data->ChainCallbackUserData;

return user_data->ChainCallback(data);

}

return 0;

}

bool ImGui::InputText(const char* label, std::string* str, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)

{

IM_ASSERT((flags & ImGuiInputTextFlags_CallbackResize) == 0);

flags |= ImGuiInputTextFlags_CallbackResize;

InputTextCallback_UserData cb_user_data;

cb_user_data.Str = str;

cb_user_data.ChainCallback = callback;

cb_user_data.ChainCallbackUserData = user_data;

return InputText(label, (char*)str->c_str(), str->capacity() + 1, flags, InputTextCallback, &cb_user_data);

}

bool ImGui::InputTextMultiline(const char* label, std::string* str, const ImVec2& size, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)

{

IM_ASSERT((flags & ImGuiInputTextFlags_CallbackResize) == 0);

flags |= ImGuiInputTextFlags_CallbackResize;

InputTextCallback_UserData cb_user_data;

cb_user_data.Str = str;

cb_user_data.ChainCallback = callback;

cb_user_data.ChainCallbackUserData = user_data;

return InputTextMultiline(label, (char*)str->c_str(), str->capacity() + 1, size, flags, InputTextCallback, &cb_user_data);

}

bool ImGui::InputTextWithHint(const char* label, const char* hint, std::string* str, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)

{

IM_ASSERT((flags & ImGuiInputTextFlags_CallbackResize) == 0);

flags |= ImGuiInputTextFlags_CallbackResize;

InputTextCallback_UserData cb_user_data;

cb_user_data.Str = str;

cb_user_data.ChainCallback = callback;

cb_user_data.ChainCallbackUserData = user_data;

return InputTextWithHint(label, hint, (char*)str->c_str(), str->capacity() + 1, flags, InputTextCallback, &cb_user_data);

}

#if defined(__clang__)

#pragma clang diagnostic pop

#endif

imgui/misc/cpp/imgui_stdlib.cpp at master · codeage/imgui · GitHub

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