Mon, 12 Feb 2024 17:32:02 +0100
add minimal working download
/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright 2014 Olaf Wintermann. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #import <stdio.h> #import <stdlib.h> #import <string.h> #import "text.h" #import "container.h" @implementation TextChangeMgr - (TextChangeMgr*)initWithValue:(UiText*)text context:(UiContext*)ctx { value = text; context = ctx; last_length = 0; return self; } - (NSUndoManager*)undoManagerForTextView:(NSTextView*)textview { return (NSUndoManager*)value->undomgr; } - (NSRange)textView:(NSTextView *)textview willChangeSelectionFromCharacterRange:(NSRange)oldrange toCharacterRange:(NSRange)newrange { if(newrange.length != last_length) { if(newrange.length == 0) { ui_unset_group(context, UI_GROUP_SELECTION); } else { ui_set_group(context, UI_GROUP_SELECTION); } } last_length = newrange.length; return newrange; } @end UIWIDGET ui_textarea(UiObject *obj, UiText *value) { UiContainer *ct = uic_get_current_container(obj); NSRect frame = ct->getframe(ct); NSScrollView *scrollview = [[NSScrollView alloc] initWithFrame:frame]; [scrollview setHasVerticalScroller:YES]; //[scrollvew setHasHorizontalScroller:YES]; [scrollview setBorderType:NSNoBorder]; //[scrollview setAutoresizingMask:NSViewWidthSizable|NSViewHeightSizable]; //frame.size.width = frame.size.width - 15; NSTextView *textview = [[NSTextView alloc]initWithFrame:frame]; [textview setAllowsUndo:TRUE]; [textview setAutoresizingMask:NSViewWidthSizable|NSViewHeightSizable]; [textview setFont:[NSFont fontWithName:@"Menlo" size:12]]; [scrollview setDocumentView:textview]; ct->add(ct, scrollview); // bind value if(value) { value->get = ui_textarea_get; value->set = ui_textarea_set; value->getsubstr = ui_textarea_getsubstr; value->insert = ui_textarea_insert; value->position = ui_textarea_position; value->selection = ui_textarea_selection; value->length = ui_textarea_length; value->value = NULL; value->obj = textview; TextChangeMgr *delegate = [[TextChangeMgr alloc]initWithValue:value context:obj->ctx]; [textview setDelegate:delegate]; NSUndoManager *undomgr = [[NSUndoManager alloc]init]; value->undomgr = undomgr; } return textview; } char* ui_textarea_get(UiText *text) { if(text->value) { free(text->value); } NSTextView *textview = (NSTextView*)text->obj; NSString *str = [[textview textStorage]string]; size_t length = [str lengthOfBytesUsingEncoding:NSUTF8StringEncoding]; const char *cstr = [str UTF8String]; char *value = malloc(length + 1); memcpy(value, cstr, length); value[length] = '\0'; text->value = value; return value; } void ui_textarea_set(UiText *text, char *str) { if(text->value) { free(text->value); } NSTextView *textview = (NSTextView*)text->obj; NSString *s = [[NSString alloc]initWithUTF8String:str]; NSAttributedString *as = [[NSAttributedString alloc]initWithString:s]; [[textview textStorage] setAttributedString:as]; text->value = NULL; } char* ui_textarea_getsubstr(UiText *text, int begin, int end) { if(text->value) { free(text->value); } NSTextView *textview = (NSTextView*)text->obj; NSString *str = [[textview textStorage]string]; NSRange range; range.location = begin; range.length = end - begin; NSString *substr = [str substringWithRange:range]; size_t length = [substr lengthOfBytesUsingEncoding:NSUTF8StringEncoding]; const char *cstr = [substr UTF8String]; char *value = malloc(length + 1); memcpy(value, cstr, length); value[length] = '\0'; text->value = value; return value; } void ui_textarea_insert(UiText *text, int pos, char *str) { if(text->value) { free(text->value); } NSTextView *textview = (NSTextView*)text->obj; NSString *s = [[NSString alloc]initWithUTF8String:str]; NSAttributedString *as = [[NSAttributedString alloc]initWithString:s]; [[textview textStorage] insertAttributedString:as atIndex: pos]; text->value = NULL; } int ui_textarea_position(UiText *text) { return [[[(NSTextView*)text->obj selectedRanges] objectAtIndex:0] rangeValue].location; } void ui_textarea_selection(UiText *text, int *begin, int *end) { NSRange range = [[[(NSTextView*)text->obj selectedRanges] objectAtIndex:0] rangeValue]; *begin = range.location; *end = range.location + range.length; } int ui_textarea_length(UiText *text) { return [[(NSTextView*)text->obj textStorage] length]; } void ui_text_undo(UiText *text) { [(NSUndoManager*)text->undomgr undo]; } void ui_text_redo(UiText *text) { [(NSUndoManager*)text->undomgr redo]; }