Function ChatHistoryDrawString

src/openrct2/interface/Chat.cpp:290–312

This method is the same as gfx_draw_string_left_wrapped. But this adjusts the initial Y coordinate depending of the number of lines.

// This method is the same as gfx_draw_string_left_wrapped.
// But this adjusts the initial Y coordinate depending of the number of lines.
static int32_t ChatHistoryDrawString(RenderTarget& rt, const char* text, const ScreenCoordsXY& screenCoords, int32_t width)
{
    int32_t numLines;
    u8string wrappedString;
    wrapString(FormatString("{OUTLINE}{WHITE}{STRING}", text), width, FontStyle::medium, &wrappedString, &numLines);
    auto lineHeight = FontGetLineHeight(FontStyle::medium);

    int32_t expectedY = screenCoords.y - (numLines * lineHeight);
    if (expectedY < 50)
    {
        return (numLines * lineHeight); // Skip drawing, return total height.
    }

    const utf8* bufferPtr = wrappedString.data();
    int32_t lineY = screenCoords.y;
    for (int32_t line = 0; line <= numLines; ++line)
    {
        drawText(rt, { screenCoords.x, lineY - (numLines * lineHeight) }, bufferPtr, { OpenRCT2::Drawing::kColourNull });
        bufferPtr = GetStringEnd(bufferPtr) + 1;
        lineY += lineHeight;
    }
    return lineY - screenCoords.y;
}

// Wrap string without drawing, useful to get the height of a wrapped string.
// Almost the same as gfx_draw_string_left_wrapped