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| -rw-r--r-- | vcl/osx/a11ytextattributeswrapper.mm | 361 |
1 files changed, 361 insertions, 0 deletions
diff --git a/vcl/osx/a11ytextattributeswrapper.mm b/vcl/osx/a11ytextattributeswrapper.mm new file mode 100644 index 000000000..433906d7d --- /dev/null +++ b/vcl/osx/a11ytextattributeswrapper.mm @@ -0,0 +1,361 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + + +#include <osx/salinst.h> +#include <quartz/utils.h> +#include <quartz/salgdi.h> + +#include "a11ytextattributeswrapper.h" + +#include <com/sun/star/accessibility/AccessibleTextType.hpp> +#include <com/sun/star/awt/FontUnderline.hpp> +#include <com/sun/star/awt/FontWeight.hpp> +#include <com/sun/star/awt/FontStrikeout.hpp> +#include <com/sun/star/lang/IllegalArgumentException.hpp> +#include <com/sun/star/lang/IndexOutOfBoundsException.hpp> +#include <com/sun/star/text/TextMarkupType.hpp> +#include <com/sun/star/style/ParagraphAdjust.hpp> + +namespace css_awt = ::com::sun::star::awt; +using namespace ::com::sun::star::accessibility; +using namespace ::com::sun::star::beans; +using namespace ::com::sun::star::lang; +using namespace ::com::sun::star::uno; + +// cannot use NSFontDescriptor as it has no notion of explicit NSUn{bold,italic}FontMask +@interface AquaA11yFontDescriptor : NSObject +{ + NSString *_name; + NSFontTraitMask _traits; + CGFloat _size; +} +-(void)setName:(NSString*)name; +-(void)setBold:(NSFontTraitMask)bold; +-(void)setItalic:(NSFontTraitMask)italic; +-(void)setSize:(CGFloat)size; +-(NSFont*)font; +@end + +@implementation AquaA11yFontDescriptor +- (id)init +{ + if((self = [super init])) + { + _name = nil; + _traits = 0; + _size = 0.0; + } + return self; +} + +- (id)initWithDescriptor:(AquaA11yFontDescriptor*)descriptor { + if((self = [super init])) + { + _name = [descriptor->_name retain]; + _traits = descriptor->_traits; + _size = descriptor->_size; + } + return self; +} + +- (void)dealloc { + [_name release]; + [super dealloc]; +} + +-(void)setName:(NSString*)name { + if (_name != name) { + [name retain]; + [_name release]; + _name = name; + } +} + +-(void)setBold:(NSFontTraitMask)bold { + _traits &= ~(NSBoldFontMask | NSUnboldFontMask); + _traits |= bold & (NSBoldFontMask | NSUnboldFontMask); +}; + +-(void)setItalic:(NSFontTraitMask)italic { + _traits &= ~(NSItalicFontMask | NSUnitalicFontMask); + _traits |= italic & (NSItalicFontMask | NSUnitalicFontMask); +}; + +-(void)setSize:(CGFloat)size { _size = size; } + +-(NSFont*)font { + return [[NSFontManager sharedFontManager] fontWithFamily:_name traits:_traits weight:0 size:_size]; +} +@end + +@implementation AquaA11yTextAttributesWrapper : NSObject + ++(int)convertUnderlineStyle:(PropertyValue)property { + int underlineStyle = NSUnderlineStyleNone; + sal_Int16 value = 0; + property.Value >>= value; + if ( value != ::css_awt::FontUnderline::NONE + && value != ::css_awt::FontUnderline::DONTKNOW) { + underlineStyle = NSUnderlineStyleSingle; + } + return underlineStyle; +} + ++(int)convertBoldStyle:(PropertyValue)property { + int boldStyle = NSUnboldFontMask; + float value = 0; + property.Value >>= value; + if ( value == ::css_awt::FontWeight::SEMIBOLD + || value == ::css_awt::FontWeight::BOLD + || value == ::css_awt::FontWeight::ULTRABOLD + || value == ::css_awt::FontWeight::BLACK ) { + boldStyle = NSBoldFontMask; + } + return boldStyle; +} + ++(int)convertItalicStyle:(PropertyValue)property { + int italicStyle = NSUnitalicFontMask; + ::css_awt::FontSlant value = property.Value.get< ::css_awt::FontSlant>(); + if ( value == ::css_awt::FontSlant_ITALIC ) { + italicStyle = NSItalicFontMask; + } + return italicStyle; +} + ++(BOOL)isStrikethrough:(PropertyValue)property { + bool strikethrough = false; + sal_Int16 value = 0; + property.Value >>= value; + if ( value != ::css_awt::FontStrikeout::NONE + && value != ::css_awt::FontStrikeout::DONTKNOW ) { + strikethrough = true; + } + return strikethrough; +} + ++(BOOL)convertBoolean:(PropertyValue)property { + bool myBoolean = false; + bool value = false; + property.Value >>= value; + if ( value ) { + myBoolean = true; + } + return myBoolean; +} + ++(NSNumber *)convertShort:(PropertyValue)property { + sal_Int16 value = 0; + property.Value >>= value; + return [ NSNumber numberWithShort: value ]; +} + ++(void)addColor:(Color)nColor forAttribute:(NSString *)attribute andRange:(NSRange)range toString:(NSMutableAttributedString *)string { + if( nColor == COL_TRANSPARENT ) + return; + const RGBAColor aRGBAColor( nColor); + CGColorRef aColorRef = CGColorCreate ( CGColorSpaceCreateWithName ( kCGColorSpaceGenericRGB ), aRGBAColor.AsArray() ); + [ string addAttribute: attribute value: reinterpret_cast<id>(aColorRef) range: range ]; + CGColorRelease( aColorRef ); +} + ++(void)addFont:(NSFont *)font toString:(NSMutableAttributedString *)string forRange:(NSRange)range { + if ( font != nil ) { + NSDictionary * fontDictionary = [ NSDictionary dictionaryWithObjectsAndKeys: + [ font fontName ], NSAccessibilityFontNameKey, + [ font familyName ], NSAccessibilityFontFamilyKey, + [ font displayName ], NSAccessibilityVisibleNameKey, + [ NSNumber numberWithFloat: [ font pointSize ] ], NSAccessibilityFontSizeKey, + nil + ]; + [ string addAttribute: NSAccessibilityFontTextAttribute + value: fontDictionary + range: range + ]; + } +} + ++(void)applyAttributesFrom:(Sequence < PropertyValue >)attributes toString:(NSMutableAttributedString *)string forRange:(NSRange)range fontDescriptor:(AquaA11yFontDescriptor*)fontDescriptor { + NSAutoreleasePool * pool = [ [ NSAutoreleasePool alloc ] init ]; + // constants + static const OUString attrUnderline("CharUnderline"); + static const OUString attrBold("CharWeight"); + static const OUString attrFontname("CharFontName"); + static const OUString attrItalic("CharPosture"); + static const OUString attrHeight("CharHeight"); + static const OUString attrStrikethrough("CharStrikeout"); + static const OUString attrShadow("CharShadowed"); + static const OUString attrUnderlineColor("CharUnderlineColor"); + static const OUString attrUnderlineHasColor("CharUnderlineHasColor"); + static const OUString attrForegroundColor("CharColor"); + static const OUString attrBackgroundColor("CharBackColor"); + static const OUString attrSuperscript("CharEscapement"); + static const OUString attrTextAlignment("ParaAdjust"); + // vars + sal_Int32 underlineColor = 0; + bool underlineHasColor = false; + // add attributes to string + for ( const PropertyValue& property : attributes ) { + // TODO: NSAccessibilityMisspelledTextAttribute, NSAccessibilityAttachmentTextAttribute, NSAccessibilityLinkTextAttribute + // NSAccessibilityStrikethroughColorTextAttribute is unsupported by UNP-API + if ( property.Value.hasValue() ) { + if ( property.Name.equals ( attrUnderline ) ) { + int style = [ AquaA11yTextAttributesWrapper convertUnderlineStyle: property ]; + if ( style != NSUnderlineStyleNone ) { + [ string addAttribute: NSAccessibilityUnderlineTextAttribute value: [ NSNumber numberWithInt: style ] range: range ]; + } + } else if ( property.Name.equals ( attrFontname ) ) { + OUString fontname; + property.Value >>= fontname; + [fontDescriptor setName:CreateNSString(fontname)]; + } else if ( property.Name.equals ( attrBold ) ) { + [fontDescriptor setBold:[AquaA11yTextAttributesWrapper convertBoldStyle:property]]; + } else if ( property.Name.equals ( attrItalic ) ) { + [fontDescriptor setItalic:[AquaA11yTextAttributesWrapper convertItalicStyle:property]]; + } else if ( property.Name.equals ( attrHeight ) ) { + float size; + property.Value >>= size; + [fontDescriptor setSize:size]; + } else if ( property.Name.equals ( attrStrikethrough ) ) { + if ( [ AquaA11yTextAttributesWrapper isStrikethrough: property ] ) { + [ string addAttribute: NSAccessibilityStrikethroughTextAttribute value: [ NSNumber numberWithBool: YES ] range: range ]; + } + } else if ( property.Name.equals ( attrShadow ) ) { + if ( [ AquaA11yTextAttributesWrapper convertBoolean: property ] ) { + [ string addAttribute: NSAccessibilityShadowTextAttribute value: [ NSNumber numberWithBool: YES ] range: range ]; + } + } else if ( property.Name.equals ( attrUnderlineColor ) ) { + property.Value >>= underlineColor; + } else if ( property.Name.equals ( attrUnderlineHasColor ) ) { + underlineHasColor = [ AquaA11yTextAttributesWrapper convertBoolean: property ]; + } else if ( property.Name.equals ( attrForegroundColor ) ) { + [ AquaA11yTextAttributesWrapper addColor: property.Value.get<sal_Int32>() forAttribute: NSAccessibilityForegroundColorTextAttribute andRange: range toString: string ]; + } else if ( property.Name.equals ( attrBackgroundColor ) ) { + [ AquaA11yTextAttributesWrapper addColor: property.Value.get<sal_Int32>() forAttribute: NSAccessibilityBackgroundColorTextAttribute andRange: range toString: string ]; + } else if ( property.Name.equals ( attrSuperscript ) ) { + // values < zero mean subscript + // values > zero mean superscript + // this is true for both NSAccessibility-API and UNO-API + NSNumber * number = [ AquaA11yTextAttributesWrapper convertShort: property ]; + if ( [ number shortValue ] != 0 ) { + [ string addAttribute: NSAccessibilitySuperscriptTextAttribute value: number range: range ]; + } + } else if ( property.Name.equals ( attrTextAlignment ) ) { + sal_Int32 alignment; + property.Value >>= alignment; + NSNumber *textAlignment = nil; +SAL_WNODEPRECATED_DECLARATIONS_PUSH + // 'NSCenterTextAlignment' is deprecated: first deprecated in macOS 10.12 + // 'NSJustifiedTextAlignment' is deprecated: first deprecated in macOS 10.12 + // 'NSLeftTextAlignment' is deprecated: first deprecated in macOS 10.12 + // 'NSRightTextAlignment' is deprecated: first deprecated in macOS 10.12 + switch(static_cast<css::style::ParagraphAdjust>(alignment)) { + case css::style::ParagraphAdjust_RIGHT : textAlignment = [NSNumber numberWithInteger:NSRightTextAlignment] ; break; + case css::style::ParagraphAdjust_CENTER: textAlignment = [NSNumber numberWithInteger:NSCenterTextAlignment] ; break; + case css::style::ParagraphAdjust_BLOCK : textAlignment = [NSNumber numberWithInteger:NSJustifiedTextAlignment]; break; + case css::style::ParagraphAdjust_LEFT : + default : textAlignment = [NSNumber numberWithInteger:NSLeftTextAlignment] ; break; + } +SAL_WNODEPRECATED_DECLARATIONS_POP + NSDictionary *paragraphStyle = [NSDictionary dictionaryWithObjectsAndKeys:textAlignment, @"AXTextAlignment", textAlignment, @"AXVisualTextAlignment", nil]; + [string addAttribute:@"AXParagraphStyle" value:paragraphStyle range:range]; + } + } + } + // add underline information + if ( underlineHasColor ) { + [ AquaA11yTextAttributesWrapper addColor: underlineColor forAttribute: NSAccessibilityUnderlineColorTextAttribute andRange: range toString: string ]; + } + // add font information + NSFont * font = [fontDescriptor font]; + [AquaA11yTextAttributesWrapper addFont:font toString:string forRange:range]; + [ pool release ]; +} + ++(void)addMarkup:(XAccessibleTextMarkup*)markup withType:(long)type toString:(NSMutableAttributedString*)string inRange:(NSRange)range { + const long markupCount = markup->getTextMarkupCount(type); + for (long markupIndex = 0; markupIndex < markupCount; ++markupIndex) { + TextSegment markupSegment = markup->getTextMarkup(markupIndex, type); + NSRange markupRange = NSMakeRange(markupSegment.SegmentStart, markupSegment.SegmentEnd - markupSegment.SegmentStart); + markupRange = NSIntersectionRange(range, markupRange); + if (markupRange.length > 0) { + markupRange.location -= range.location; + switch(type) { + case css::text::TextMarkupType::SPELLCHECK: { + [string addAttribute:NSAccessibilityMisspelledTextAttribute value:[NSNumber numberWithBool:YES] range:markupRange]; + [string addAttribute:@"AXMarkedMisspelled" value:[NSNumber numberWithBool:YES] range:markupRange]; + break; + } + } + } + } +} + ++(void)addMarkup:(XAccessibleTextMarkup*)markup toString:(NSMutableAttributedString*)string inRange:(NSRange)range { + [AquaA11yTextAttributesWrapper addMarkup:markup withType:css::text::TextMarkupType::SPELLCHECK toString:string inRange:range]; +} + ++(NSMutableAttributedString *)createAttributedStringForElement:(AquaA11yWrapper *)wrapper inOrigRange:(id)origRange { + static const Sequence < OUString > emptySequence; + // vars + NSMutableAttributedString * string = nil; + int loc = [ origRange rangeValue ].location; + int len = [ origRange rangeValue ].length; + int endIndex = loc + len; + int currentIndex = loc; + try { + NSString * myString = CreateNSString ( [ wrapper accessibleText ] -> getText() ); // TODO: dirty fix for i87817 + string = [ [ NSMutableAttributedString alloc ] initWithString: CreateNSString ( [ wrapper accessibleText ] -> getTextRange ( loc, loc + len ) ) ]; + if ( [ wrapper accessibleTextAttributes ] && [myString characterAtIndex:0] != 57361) { // TODO: dirty fix for i87817 + [ string beginEditing ]; + // add default attributes for whole string + Sequence < PropertyValue > defaultAttributes = [ wrapper accessibleTextAttributes ] -> getDefaultAttributes ( emptySequence ); + AquaA11yFontDescriptor *defaultFontDescriptor = [[AquaA11yFontDescriptor alloc] init]; + [ AquaA11yTextAttributesWrapper applyAttributesFrom: defaultAttributes toString: string forRange: NSMakeRange ( 0, len ) fontDescriptor: defaultFontDescriptor ]; + // add attributes for attribute run(s) + while ( currentIndex < endIndex ) { + TextSegment textSegment = [ wrapper accessibleText ] -> getTextAtIndex ( currentIndex, AccessibleTextType::ATTRIBUTE_RUN ); + int endOfRange = endIndex > textSegment.SegmentEnd ? textSegment.SegmentEnd : endIndex; + NSRange rangeForAttributeRun = NSMakeRange ( currentIndex - loc , endOfRange - currentIndex ); + // add run attributes + Sequence < PropertyValue > attributes = [ wrapper accessibleTextAttributes ] -> getRunAttributes ( currentIndex, emptySequence ); + AquaA11yFontDescriptor *fontDescriptor = [[AquaA11yFontDescriptor alloc] initWithDescriptor:defaultFontDescriptor]; + [ AquaA11yTextAttributesWrapper applyAttributesFrom: attributes toString: string forRange: rangeForAttributeRun fontDescriptor: fontDescriptor ]; + [fontDescriptor release]; + currentIndex = textSegment.SegmentEnd; + } + [defaultFontDescriptor release]; + if ([wrapper accessibleTextMarkup]) + [AquaA11yTextAttributesWrapper addMarkup:[wrapper accessibleTextMarkup] toString:string inRange:[origRange rangeValue]]; + [ string endEditing ]; + } + } catch ( IllegalArgumentException & ) { + // empty + } catch ( IndexOutOfBoundsException & ) { + // empty + } catch ( RuntimeException& ) { + // at least don't crash + } + return string; +} + +@end + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |