diff options
Diffstat (limited to 'ui.c')
| -rw-r--r-- | ui.c | 296 |
1 files changed, 0 insertions, 296 deletions
@@ -1,296 +0,0 @@ -// Format option at a position in raw text, used when iterating to know when to toggle a color -// option. -typedef struct { - u32 Position; - u32 Color; -} format_option; - -// Array of format options and length of said array -typedef struct { - format_option* Options; - u32 Len; -} markdown_formatoptions; - -typedef struct { - u32* Text; - u32 Len; -} raw_result; - -// Return True if ch is whitespace -Bool -is_whitespace(u32 ch) -{ - if (ch == L' ') - return True; - return False; -} - -// Return True if ch is a supported markdown markup character -// TODO: tilde -Bool -is_markdown(u32 ch) -{ - if (ch == L'_' || - ch == L'*') - return True; - return False; -} - -// Print `Text`, `Len` characters long with markdown -// NOTE: This function has no wrapping support -void -tb_print_markdown(u32 X, u32 Y, u32 fg, u32 bg, u32* Text, u32 Len) -{ - for (u32 ch = 0; ch < Len; ch++) - { - if (Text[ch] == L'_') - { - if (ch < Len - 1 && Text[ch + 1] == L'_') - { - fg ^= TB_UNDERLINE; - ch++; - } - else - { - fg ^= TB_ITALIC; - } - } - else if (Text[ch] == L'*') - { - if (ch < Len - 1 && Text[ch + 1] == L'*') - { - fg ^= TB_BOLD; - ch++; - } - else - { - fg ^= TB_ITALIC; - } - } - else - { - tb_printf(X, Y, fg, bg, "%lc", Text[ch]); -#ifdef DEBUG - tb_present(); -#endif - X++; - } - } -} - -// Print `Text`, `Len` characters long as a string wrapped at `XLimit` width and `YLimit` height. -void -tb_print_wrapped(u32 X, u32 Y, u32 XLimit, u32 YLimit, u32* Text, u32 Len) -{ - // Iterator in text - assert(XLimit > 0); - assert(YLimit > 0); - u32 i = XLimit; - - u32 PrevI = 0; - - // For printing - u32 t = 0; - - while(i < Len) - { - // Search backwards for whitespace - while (!is_whitespace(Text[i])) - { - i--; - - // Failed to find whitespace, break on limit at character - if (i == PrevI) - { - i += XLimit; - break; - } - } - - t = Text[i]; - Text[i] = 0; - tb_printf(X, Y++, 0, 0, "%ls", Text + PrevI); -#ifdef DEBUG - tb_present(); -#endif - - Text[i] = t; - - if (is_whitespace(Text[i])) i++; - - PrevI = i; - i += XLimit; - - if (Y >= YLimit - 1) - { - break; - } - } - tb_printf(X, Y++, 0, 0, "%ls", Text + PrevI); -} - -// Print raw string with markdown format options in `MDFormat`, wrapped at -// `XLimit` and `YLimit`. The string is offset by `XOffset` and `YOffset`. -// `fg` and `bg` are passed to `tb_printf`. -// `Len` is the length of the string not including a null terminator -// The wrapping algorithm searches for a whitespace backwards and if none are found it wraps at -// `XLimit`. -// This function first builds an array of positions where to wrap and then prints `Text` by -// character using the array in `MDFormat.Options` and `WrapPositions` to know when to act. -// Returns how many times wrapped -u32 -tb_print_wrapped_with_markdown(u32 XOffset, u32 YOffset, u32 fg, u32 bg, - u32* Text, u32 Len, - u32 XLimit, u32 YLimit, - markdown_formatoptions MDFormat) -{ - XLimit -= XOffset; - YLimit -= YOffset; - assert(YLimit > 0); - assert(XLimit > 0); - - u32 TextIndex = XLimit; - u32 PrevTextIndex = 0; - - u32 WrapPositions[Len/XLimit + 1]; - u32 WrapPositionsLen = 0; - - // Get wrap positions - while (TextIndex < Len) - { - while (!is_whitespace(Text[TextIndex])) - { - TextIndex--; - - if (TextIndex == PrevTextIndex) - { - TextIndex += XLimit; - break; - } - } - - WrapPositions[WrapPositionsLen] = TextIndex; - WrapPositionsLen++; - - PrevTextIndex = TextIndex; - TextIndex += XLimit; - } - - u32 MDFormatOptionsIndex = 0; - u32 WrapPositionsIndex = 0; - u32 X = XOffset, Y = YOffset; - - for (u32 TextIndex = 0; TextIndex < Len; TextIndex++) - { - if (MDFormatOptionsIndex < MDFormat.Len && - TextIndex == MDFormat.Options[MDFormatOptionsIndex].Position) - { - fg ^= MDFormat.Options[MDFormatOptionsIndex].Color; - MDFormatOptionsIndex++; - } - if (WrapPositionsIndex < WrapPositionsLen && - TextIndex == WrapPositions[WrapPositionsIndex]) - { - Y++; - if (Y == YLimit) return WrapPositionsIndex + 1; - WrapPositionsIndex++; - X = XOffset; - if (is_whitespace(Text[TextIndex])) continue; - } - tb_printf(X++, Y, fg, bg, "%lc", Text[TextIndex]); - } - assert(WrapPositionsIndex == WrapPositionsLen); - assert(MDFormat.Len == MDFormatOptionsIndex); - - return WrapPositionsLen + 1; -} - -// Return string without markdown markup characters using `is_markdown()` -// ScratchArena is used to allocate space for the raw text -// If ScratchArena is null then it will only return then length of the raw string -// Len should be characters + null terminator -// Copies the null terminator as well -raw_result -markdown_to_raw(Arena* ScratchArena, u32* Text, u32 Len) -{ - raw_result Result = {0}; - if (ScratchArena) - { - Result.Text = ScratchArena->addr; - } - - for (u32 i = 0; i < Len; i++) - { - if (!is_markdown(Text[i])) - { - if (ScratchArena) - { - u32* ch = ArenaPush(ScratchArena, sizeof(*ch)); - *ch = Text[i]; - } - Result.Len++; - } - } - - return Result; -} - -// Get a string with markdown in it and fill array in makrdown_formtoptions with position and colors -// Use Scratcharena to make allocations on that buffer, The Maximimum space needed is Len, eg. when -// the string is only markup characters. -markdown_formatoptions -preprocess_markdown(Arena* ScratchArena, u32* Text, u32 Len) -{ - markdown_formatoptions Result = {0}; - Result.Options = (format_option*)((u8*)ScratchArena->addr + ScratchArena->pos); - - format_option* FormatOpt; - - // raw char iterator - u32 rawch = 0; - - for (u32 i = 0; i < Len; i++) - { - switch (Text[i]) - { - case L'_': - { - FormatOpt = ArenaPush(ScratchArena, sizeof(*FormatOpt)); - Result.Len++; - - FormatOpt->Position = rawch; - if (i < Len - 1 && Text[i + 1] == '_') - { - FormatOpt->Color = TB_UNDERLINE; - i++; - } - else - { - FormatOpt->Color = TB_ITALIC; - } - } break; - case L'*': - { - FormatOpt = ArenaPush(ScratchArena, sizeof(*FormatOpt)); - Result.Len++; - - FormatOpt->Position = rawch; - if (i < Len - 1 && Text[i + 1] == '*') - { - FormatOpt->Color = TB_BOLD; - i++; - } - else - { - FormatOpt->Color = TB_ITALIC; - } - } break; - default: - { - rawch++; - } break; - } - } - - return Result; -} |