FIXME-WORDWRAP: Bundle some of this into ImGuiTextIndex and/or extract as a different tool? 'max_output_buffer_size' happens to be a meaningful optimization to avoid writing the full line_index when not necessarily needed (e.g. very large buffer, scrolled up, inactive)
| 4605 | // FIXME-WORDWRAP: Bundle some of this into ImGuiTextIndex and/or extract as a different tool? |
| 4606 | // 'max_output_buffer_size' happens to be a meaningful optimization to avoid writing the full line_index when not necessarily needed (e.g. very large buffer, scrolled up, inactive) |
| 4607 | static int InputTextLineIndexBuild(ImGuiInputTextFlags flags, ImGuiTextIndex* line_index, const char* buf, const char* buf_end, float wrap_width, int max_output_buffer_size, const char** out_buf_end) |
| 4608 | { |
| 4609 | ImGuiContext& g = *GImGui; |
| 4610 | int size = 0; |
| 4611 | const char* s; |
| 4612 | bool trailing_line_already_counted = false; |
| 4613 | if (flags & ImGuiInputTextFlags_WordWrap) |
| 4614 | { |
| 4615 | for (s = buf; s < buf_end; s = (*s == '\n') ? s + 1 : s) |
| 4616 | { |
| 4617 | if (size++ <= max_output_buffer_size) |
| 4618 | line_index->Offsets.push_back((int)(s - buf)); |
| 4619 | s = ImFontCalcWordWrapPositionEx(g.Font, g.FontSize, s, buf_end, wrap_width, ImDrawTextFlags_WrapKeepBlanks); |
| 4620 | } |
| 4621 | } |
| 4622 | else if (buf_end != NULL) |
| 4623 | { |
| 4624 | for (s = buf; s < buf_end; s = s ? s + 1 : buf_end) |
| 4625 | { |
| 4626 | if (size++ <= max_output_buffer_size) |
| 4627 | line_index->Offsets.push_back((int)(s - buf)); |
| 4628 | s = (const char*)ImMemchr(s, '\n', buf_end - s); |
| 4629 | } |
| 4630 | } |
| 4631 | else |
| 4632 | { |
| 4633 | // Inactive path: we don't know buf_end ahead of time. |
| 4634 | const char* s_eol; |
| 4635 | for (s = buf; ; s = s_eol + 1) |
| 4636 | { |
| 4637 | if (size++ <= max_output_buffer_size) |
| 4638 | line_index->Offsets.push_back((int)(s - buf)); |
| 4639 | if ((s_eol = strchr(s, '\n')) != NULL) |
| 4640 | continue; |
| 4641 | s += strlen(s); |
| 4642 | trailing_line_already_counted = true; |
| 4643 | break; |
| 4644 | } |
| 4645 | } |
| 4646 | if (out_buf_end != NULL) |
| 4647 | *out_buf_end = buf_end = s; |
| 4648 | if (size == 0) |
| 4649 | { |
| 4650 | line_index->Offsets.push_back(0); |
| 4651 | size++; |
| 4652 | } |
| 4653 | if (buf_end > buf && buf_end[-1] == '\n' && !trailing_line_already_counted && size++ <= max_output_buffer_size) |
| 4654 | line_index->Offsets.push_back((int)(buf_end - buf)); |
| 4655 | return size; |
| 4656 | } |
| 4657 | |
| 4658 | static ImVec2 InputTextLineIndexGetPosOffset(ImGuiContext& g, ImGuiInputTextState* state, ImGuiTextIndex* line_index, const char* buf, const char* buf_end, int cursor_n) |
| 4659 | { |
no test coverage detected