Method InsertChars

3rdparty/imgui/src/imgui_widgets.cpp:4364–4406

}

void ImGuiInputTextCallbackData::InsertChars(int pos, const char* new_text, const char* new_text_end)
{
    // Accept null ranges
    if (new_text == new_text_end)
        return;

    ImGuiContext& g = *Ctx;
    ImGuiInputTextState* obj = &g.InputTextState;
    IM_ASSERT(obj->ID != 0 && g.ActiveId == obj->ID);
    const bool is_resizable = (Flags & ImGuiInputTextFlags_CallbackResize) != 0;
    const bool is_readonly = (Flags & ImGuiInputTextFlags_ReadOnly) != 0;
    int new_text_len = new_text_end ? (int)(new_text_end - new_text) : (int)ImStrlen(new_text);

    // We support partial insertion (with a mod in stb_textedit.h)
    const int avail = BufSize - 1 - BufTextLen;
    if (!is_resizable && new_text_len > avail)
        new_text_len = (int)(ImTextFindValidUtf8CodepointEnd(new_text, new_text + new_text_len, new_text + avail) - new_text); // Truncate to closest UTF-8 codepoint. Alternative: return 0 to cancel insertion.
    if (new_text_len == 0)
        return;

    // Grow internal buffer if needed
    if (new_text_len + BufTextLen + 1 > obj->TextA.Size && is_resizable && !is_readonly)
    {
        IM_ASSERT(Buf == obj->TextA.Data);
        int new_buf_size = BufTextLen + ImClamp(new_text_len * 4, 32, ImMax(256, new_text_len)) + 1;
        obj->TextA.resize(new_buf_size + 1);
        obj->TextSrc = obj->TextA.Data;
        Buf = obj->TextA.Data;
        BufSize = obj->BufCapacity = new_buf_size;
    }

    if (BufTextLen != pos)
        memmove(Buf + pos + new_text_len, Buf + pos, (size_t)(BufTextLen - pos));
    memcpy(Buf + pos, new_text, (size_t)new_text_len * sizeof(char));
    Buf[BufTextLen + new_text_len] = '\0';

    BufDirty = true;
    BufTextLen += new_text_len;
    if (CursorPos >= pos)
        CursorPos += new_text_len;
    CursorPos = ImClamp(CursorPos, 0, BufTextLen);
    SelectionStart = SelectionEnd = CursorPos;
}

void ImGui::PushPasswordFont()
{