Method LogRenderedText

tutorials/common/imgui/imgui.cpp:12089–12145

Internal version that takes a position to decide on newline placement and pad items according to their depth. We split text into individual lines to add current tree level padding FIXME: This code is a little complicated perhaps, considering simplifying the whole system.

// We split text into individual lines to add current tree level padding
// FIXME: This code is a little complicated perhaps, considering simplifying the whole system.
void ImGui::LogRenderedText(const ImVec2* ref_pos, const char* text, const char* text_end)
{
    ImGuiContext& g = *GImGui;
    ImGuiWindow* window = g.CurrentWindow;

    const char* prefix = g.LogNextPrefix;
    const char* suffix = g.LogNextSuffix;
    g.LogNextPrefix = g.LogNextSuffix = NULL;

    if (!text_end)
        text_end = FindRenderedTextEnd(text, text_end);

    const bool log_new_line = ref_pos && (ref_pos->y > g.LogLinePosY + g.Style.FramePadding.y + 1);
    if (ref_pos)
        g.LogLinePosY = ref_pos->y;
    if (log_new_line)
    {
        LogText(IM_NEWLINE);
        g.LogLineFirstItem = true;
    }

    if (prefix)
        LogRenderedText(ref_pos, prefix, prefix + strlen(prefix)); // Calculate end ourself to ensure "##" are included here.

    // Re-adjust padding if we have popped out of our starting depth
    if (g.LogDepthRef > window->DC.TreeDepth)
        g.LogDepthRef = window->DC.TreeDepth;
    const int tree_depth = (window->DC.TreeDepth - g.LogDepthRef);

    const char* text_remaining = text;
    for (;;)
    {
        // Split the string. Each new line (after a '\n') is followed by indentation corresponding to the current depth of our log entry.
        // We don't add a trailing \n yet to allow a subsequent item on the same line to be captured.
        const char* line_start = text_remaining;
        const char* line_end = ImStreolRange(line_start, text_end);
        const bool is_last_line = (line_end == text_end);
        if (line_start != line_end || !is_last_line)
        {
            const int line_length = (int)(line_end - line_start);
            const int indentation = g.LogLineFirstItem ? tree_depth * 4 : 1;
            LogText("%*s%.*s", indentation, "", line_length, line_start);
            g.LogLineFirstItem = false;
            if (*line_end == '\n')
            {
                LogText(IM_NEWLINE);
                g.LogLineFirstItem = true;
            }
        }
        if (is_last_line)
            break;
        text_remaining = line_end + 1;
    }

    if (suffix)
        LogRenderedText(ref_pos, suffix, suffix + strlen(suffix));
}