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author | Hanspeter Portner <dev@open-music-kontrollers.ch> | 2016-12-05 14:49:31 +0100 |
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committer | Hanspeter Portner <dev@open-music-kontrollers.ch> | 2016-12-05 14:49:31 +0100 |
commit | 08924f1b755a4e703b02750bedcbe525842c2c7d (patch) | |
tree | 7ecd5609e0ddf1bb4bb4fd98a6f4fc6796292b4d | |
parent | ca1c9b3275cf8e31b01fcd61c4d5116f88d4e24d (diff) | |
download | sherlock.lv2-08924f1b755a4e703b02750bedcbe525842c2c7d.tar.xz |
add support for syntax highlighting
-rw-r--r-- | nuklear.h | 152 |
1 files changed, 140 insertions, 12 deletions
@@ -1663,6 +1663,18 @@ enum nk_text_edit_mode { NK_TEXT_EDIT_MODE_REPLACE }; +struct nk_token { + struct nk_color color; + int offset; +}; + +struct nk_lexer { + struct nk_token *tokens; + struct nk_token *(*lex)(void *data, const char *buf, int size); + void *data; + int needs_refresh; +}; + struct nk_text_edit { struct nk_clipboard clip; struct nk_str string; @@ -1681,6 +1693,7 @@ struct nk_text_edit { unsigned char padding1; float preferred_x; struct nk_text_undo_state undo; + struct nk_lexer lexer; }; /* filter function */ @@ -11929,6 +11942,8 @@ nk_textedit_text(struct nk_text_edit *state, const char *text, int total_len) glyph_len = nk_utf_decode(text + text_len, &unicode, total_len-text_len); text_len += glyph_len; } + + state->lexer.needs_refresh = 1; } NK_INTERN void @@ -12235,6 +12250,8 @@ retry: --state->cursor; }} break; } + + state->lexer.needs_refresh = 1; } NK_INTERN void @@ -12627,6 +12644,73 @@ nk_widget_text(struct nk_command_buffer *o, struct nk_rect b, } NK_INTERN void +nk_widget_text_lexed(struct nk_command_buffer *o, struct nk_rect b, + const char *string, int len, const struct nk_text *t, + nk_flags a, const struct nk_user_font *f, struct nk_token *tokens, int offset) +{ + struct nk_rect label; + float text_width; + struct nk_token *token = tokens; + + NK_ASSERT(o); + NK_ASSERT(t); + if (!o || !t) return; + + b.h = NK_MAX(b.h, 2 * t->padding.y); + label.x = 0; label.w = 0; + label.y = b.y + t->padding.y; + label.h = NK_MIN(f->height, b.h - 2 * t->padding.y); + + text_width = f->width(f->userdata, f->height, (const char*)string, len); + text_width += (2.0f * t->padding.x); + + /* align in x-axis */ + if (a & NK_TEXT_ALIGN_LEFT) { + label.x = b.x + t->padding.x; + label.w = NK_MAX(0, b.w - 2 * t->padding.x); + } else if (a & NK_TEXT_ALIGN_CENTERED) { + label.w = NK_MAX(1, 2 * t->padding.x + (float)text_width); + label.x = (b.x + t->padding.x + ((b.w - 2 * t->padding.x) - label.w) / 2); + label.x = NK_MAX(b.x + t->padding.x, label.x); + label.w = NK_MIN(b.x + b.w, label.x + label.w); + if (label.w >= label.x) label.w -= label.x; + } else if (a & NK_TEXT_ALIGN_RIGHT) { + label.x = NK_MAX(b.x + t->padding.x, (b.x + b.w) - (2 * t->padding.x + (float)text_width)); + label.w = (float)text_width + 2 * t->padding.x; + } else return; + + /* align in y-axis */ + if (a & NK_TEXT_ALIGN_MIDDLE) { + label.y = b.y + b.h/2.0f - (float)f->height/2.0f; + label.h = NK_MAX(b.h/2.0f, b.h - (b.h/2.0f + f->height/2.0f)); + } else if (a & NK_TEXT_ALIGN_BOTTOM) { + label.y = b.y + b.h - f->height; + label.h = f->height; + } + + //FIXME do this chunk-wise instead of character-wise + for(int i = 0; i < len; i++) + { + const struct nk_rect dst = { + .x = label.x + i*text_width/len, + .y = label.y, + .w = text_width, + .h = label.h + }; + + struct nk_color bg = t->background; + struct nk_color fg = t->text; + + while(offset + i >= token->offset) + token++; + + fg = token->color; + + nk_draw_text(o, dst, string + i, 1, f, bg, fg); + } +} + +NK_INTERN void nk_widget_text_wrap(struct nk_command_buffer *o, struct nk_rect b, const char *string, int len, const struct nk_text *t, const struct nk_user_font *f) @@ -14043,7 +14127,7 @@ nk_edit_draw_text(struct nk_command_buffer *out, const struct nk_style_edit *style, float pos_x, float pos_y, float x_offset, const char *text, int byte_len, float row_height, const struct nk_user_font *font, struct nk_color background, - struct nk_color foreground, int is_selected) + struct nk_color foreground, int is_selected, struct nk_lexer *lexer, int offset) { NK_ASSERT(out); NK_ASSERT(font); @@ -14080,8 +14164,16 @@ nk_edit_draw_text(struct nk_command_buffer *out, if (is_selected) /* selection needs to draw different background color */ nk_fill_rect(out, label, 0, background); - nk_widget_text(out, label, line, (int)((text + text_len) - line), - &txt, NK_TEXT_CENTERED, font); + if(lexer->tokens && !is_selected) + { + nk_widget_text_lexed(out, label, line, (int)((text + text_len) - line), + &txt, NK_TEXT_CENTERED, font, lexer->tokens, line - text + offset); + } + else + { + nk_widget_text(out, label, line, (int)((text + text_len) - line), + &txt, NK_TEXT_CENTERED, font); + } text_len++; line_count++; @@ -14114,11 +14206,34 @@ nk_edit_draw_text(struct nk_command_buffer *out, if (is_selected) nk_fill_rect(out, label, 0, background); - nk_widget_text(out, label, line, (int)((text + text_len) - line), - &txt, NK_TEXT_LEFT, font); + if(lexer->tokens && !is_selected) + { + nk_widget_text_lexed(out, label, line, (int)((text + text_len) - line), + &txt, NK_TEXT_LEFT, font, lexer->tokens, line - text + offset); + } + else + { + nk_widget_text(out, label, line, (int)((text + text_len) - line), + &txt, NK_TEXT_LEFT, font); + } }} } +NK_INTERN void +nk_edit_refresh_lex(struct nk_text_edit *edit) +{ + if(edit->lexer.needs_refresh || !edit->lexer.tokens) + { + if(edit->lexer.tokens) + free(edit->lexer.tokens); + + edit->lexer.tokens = edit->lexer.lex(edit->lexer.data, + nk_str_get_const(&edit->string), nk_str_len_char(&edit->string)); + + edit->lexer.needs_refresh = 0; + } +} + NK_INTERN nk_flags nk_do_edit(nk_flags *state, struct nk_command_buffer *out, struct nk_rect bounds, nk_flags flags, nk_plugin_filter filter, @@ -14134,6 +14249,7 @@ nk_do_edit(nk_flags *state, struct nk_command_buffer *out, char cursor_follow = 0; struct nk_rect old_clip; struct nk_rect clip; + int has_changes = 0; NK_ASSERT(state); NK_ASSERT(out); @@ -14271,7 +14387,7 @@ nk_do_edit(nk_flags *state, struct nk_command_buffer *out, /* tab handler */ {int tab = nk_input_is_key_pressed(in, NK_KEY_TAB); if (tab && (flags & NK_EDIT_ALLOW_TAB)) { - nk_textedit_text(edit, " ", 4); + nk_textedit_text(edit, " ", 2); cursor_follow = nk_true; }} } @@ -14462,7 +14578,7 @@ nk_do_edit(nk_flags *state, struct nk_command_buffer *out, scroll_step = scroll.h * 0.10f; scroll_inc = scroll.h * 0.01f; scroll_target = text_size.y; - edit->scrollbar.y = nk_do_scrollbarv(&ws, out, scroll, 0, + edit->scrollbar.y = nk_do_scrollbarv(&ws, out, scroll, nk_true, scroll_offset, scroll_target, scroll_step, scroll_inc, &style->scrollbar, in, font); } @@ -14505,6 +14621,13 @@ nk_do_edit(nk_flags *state, struct nk_command_buffer *out, background_color = nk_rgba(0,0,0,0); else background_color = background->data.color; + if(edit->lexer.lex) + { + if(has_changes) + edit->lexer.needs_refresh = 1; + + nk_edit_refresh_lex(edit); + } if (edit->select_start == edit->select_end) { /* no selection so just draw the complete text */ @@ -14512,7 +14635,7 @@ nk_do_edit(nk_flags *state, struct nk_command_buffer *out, int l = nk_str_len_char(&edit->string); nk_edit_draw_text(out, style, area.x - edit->scrollbar.x, area.y - edit->scrollbar.y, 0, begin, l, row_height, font, - background_color, text_color, nk_false); + background_color, text_color, nk_false, &edit->lexer, 0); } else { /* edit has selection so draw 1-3 text chunks */ if (edit->select_start != edit->select_end && selection_begin > 0){ @@ -14521,7 +14644,7 @@ nk_do_edit(nk_flags *state, struct nk_command_buffer *out, NK_ASSERT(select_begin_ptr); nk_edit_draw_text(out, style, area.x - edit->scrollbar.x, area.y - edit->scrollbar.y, 0, begin, (int)(select_begin_ptr - begin), - row_height, font, background_color, text_color, nk_false); + row_height, font, background_color, text_color, nk_false, &edit->lexer, 0); } if (edit->select_start != edit->select_end) { /* draw selected text */ @@ -14535,7 +14658,8 @@ nk_do_edit(nk_flags *state, struct nk_command_buffer *out, area.y + selection_offset_start.y - edit->scrollbar.y, selection_offset_start.x, select_begin_ptr, (int)(select_end_ptr - select_begin_ptr), - row_height, font, sel_background_color, sel_text_color, nk_true); + row_height, font, sel_background_color, sel_text_color, nk_true, + &edit->lexer, edit->select_start < edit->select_end ? edit->select_start : edit->select_end); } if ((edit->select_start != edit->select_end && selection_end < edit->string.len)) @@ -14550,7 +14674,8 @@ nk_do_edit(nk_flags *state, struct nk_command_buffer *out, area.y + selection_offset_end.y - edit->scrollbar.y, selection_offset_end.x, begin, (int)(end - begin), row_height, font, - background_color, text_color, nk_true); + background_color, text_color, nk_false, + &edit->lexer, edit->select_start < edit->select_end ? edit->select_end : edit->select_start); } } @@ -14594,6 +14719,9 @@ nk_do_edit(nk_flags *state, struct nk_command_buffer *out, int l = nk_str_len_char(&edit->string); const char *begin = nk_str_get_const(&edit->string); + if(edit->lexer.lex) + nk_edit_refresh_lex(edit); + const struct nk_style_item *background; struct nk_color background_color; struct nk_color text_color; @@ -14613,7 +14741,7 @@ nk_do_edit(nk_flags *state, struct nk_command_buffer *out, else background_color = background->data.color; nk_edit_draw_text(out, style, area.x - edit->scrollbar.x, area.y - edit->scrollbar.y, 0, begin, l, row_height, font, - background_color, text_color, nk_false); + background_color, text_color, nk_false, &edit->lexer, 0); } nk_push_scissor(out, old_clip);} return ret; |