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)
| 4795 | // FIXME-WORDWRAP: Bundle some of this into ImGuiTextIndex and/or extract as a different tool? |
| 4796 | // '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) |
| 4797 | 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) |
| 4798 | { |
| 4799 | ImGuiContext& g = *GImGui; |
| 4800 | int size = 0; |
| 4801 | const char* s; |
| 4802 | bool trailing_line_already_counted = false; |
| 4803 | if (flags & ImGuiInputTextFlags_WordWrap) |
| 4804 | { |
| 4805 | for (s = buf; s < buf_end; s = (*s == '\n') ? s + 1 : s) |
| 4806 | { |
| 4807 | if (size++ <= max_output_buffer_size) |
| 4808 | line_index->Offsets.push_back((int)(s - buf)); |
| 4809 | s = ImFontCalcWordWrapPositionEx(g.Font, g.FontSize, s, buf_end, wrap_width, ImDrawTextFlags_WrapKeepBlanks); |
| 4810 | } |
| 4811 | } |
| 4812 | else if (buf_end != NULL) |
| 4813 | { |
| 4814 | for (s = buf; s < buf_end; s = s ? s + 1 : buf_end) |
| 4815 | { |
| 4816 | if (size++ <= max_output_buffer_size) |
| 4817 | line_index->Offsets.push_back((int)(s - buf)); |
| 4818 | s = (const char*)ImMemchr(s, '\n', buf_end - s); |
| 4819 | } |
| 4820 | } |
| 4821 | else |
| 4822 | { |
| 4823 | // Inactive path: we don't know buf_end ahead of time. |
| 4824 | const char* s_eol; |
| 4825 | for (s = buf; ; s = s_eol + 1) |
| 4826 | { |
| 4827 | if (size++ <= max_output_buffer_size) |
| 4828 | line_index->Offsets.push_back((int)(s - buf)); |
| 4829 | if ((s_eol = strchr(s, '\n')) != NULL) |
| 4830 | continue; |
| 4831 | s += strlen(s); |
| 4832 | trailing_line_already_counted = true; |
| 4833 | break; |
| 4834 | } |
| 4835 | } |
| 4836 | if (out_buf_end != NULL) |
| 4837 | *out_buf_end = buf_end = s; |
| 4838 | if (size == 0) |
| 4839 | { |
| 4840 | line_index->Offsets.push_back(0); |
| 4841 | size++; |
| 4842 | } |
| 4843 | if (buf_end > buf && buf_end[-1] == '\n' && !trailing_line_already_counted && size++ <= max_output_buffer_size) |
| 4844 | line_index->Offsets.push_back((int)(buf_end - buf)); |
| 4845 | return size; |
| 4846 | } |
| 4847 | |
| 4848 | static ImVec2 InputTextLineIndexGetPosOffset(ImGuiContext& g, ImGuiInputTextState* state, ImGuiTextIndex* line_index, const char* buf, const char* buf_end, int cursor_n) |
| 4849 | { |
no test coverage detected