jens@1: //
jens@1: //  GGBTextLayer.m
jens@1: //  GGB-iPhone
jens@1: //
jens@1: //  Created by Jens Alfke on 3/10/08.
jens@1: //  Copyright 2008 __MyCompanyName__. All rights reserved.
jens@1: //
jens@1: 
jens@1: #import "GGBTextLayer.h"
jens@1: #import "QuartzUtils.h"
jens@1: 
jens@1: 
jens@1: @implementation GGBTextLayer
jens@1: 
jens@1: 
jens@1: + (GGBTextLayer*) textLayerInSuperlayer: (CALayer*)superlayer
jens@1:                                withText: (NSString*)text
jens@1:                                fontSize: (float) fontSize
jens@1:                               alignment: (enum CAAutoresizingMask) align
jens@1: {
jens@8: #if TARGET_OS_IPHONE
jens@4:     UIFont *font = [UIFont systemFontOfSize: fontSize];
jens@4: #else
jens@4:     NSFont *font = [NSFont systemFontOfSize: fontSize];
jens@4: #endif
jens@4:     return [self textLayerInSuperlayer: superlayer
jens@4:                               withText: text
jens@4:                                   font: font
jens@4:                              alignment: align];
jens@4: }
jens@4: 
jens@4: 
jens@4: + (GGBTextLayer*) textLayerInSuperlayer: (CALayer*)superlayer
jens@4:                                withText: (NSString*)text
jens@4:                                    font: (id)inputFont
jens@4:                               alignment: (enum CAAutoresizingMask) align
jens@4: {
jens@1:     GGBTextLayer *label = [[self alloc] init];
jens@1:     label.string = text;
jens@1: 
jens@8: #if TARGET_OS_IPHONE
jens@4:     UIFont *font = inputFont;
jens@4:     [label setNeedsDisplay];
jens@4:     label.needsDisplayOnBoundsChange = YES;
jens@1: #else
jens@4:     NSFont *font = inputFont;
jens@4:     label.fontSize = font.pointSize;
jens@1: #endif
jens@1:     
jens@4:     label.font = font;
jens@1:     label.foregroundColor = kBlackColor;
jens@1:     
jens@1:     NSString *mode;
jens@1:     if( align & kCALayerWidthSizable )
jens@1:         mode = @"center";
jens@1:     else if( align & kCALayerMinXMargin )
jens@1:         mode = @"right";
jens@1:     else
jens@1:         mode = @"left";
jens@1:     align |= kCALayerWidthSizable;
jens@1:     label.alignmentMode = mode;
jens@1:     
jens@8:     // Get the bounds of the interior of the superlayer:
jens@8:     CGFloat inset = round(font.pointSize/8);
jens@1:     if( [superlayer respondsToSelector: @selector(borderWidth)] )
jens@1:         inset += ((GGBLayer*)superlayer).borderWidth;
jens@1:     CGRect bounds = CGRectInset(superlayer.bounds, inset, inset);
jens@8:     if( mode==@"center" ) {
jens@8:         // horizontal centering: ignore x inset:
jens@4:         bounds = CGRectInset(bounds,-inset,0);
jens@8:     }
jens@8:     
jens@8:     // Compute y position of bottom of layer's frame. (Remember, descender is negative!)
jens@8:     CGFloat y = bounds.origin.y;
jens@8:     CGFloat descender=font.descender, height=font.ascender-descender;
jens@8:     if( align & kCALayerHeightSizable ) {
jens@8:         // Vertical centering:
jens@8:         y += (bounds.size.height-height)/2.0;
jens@8: #if ! TARGET_OS_IPHONE
jens@8:         y += descender/2.0;
jens@4: #endif
jens@8:         align &= ~kCALayerHeightSizable;
jens@8:     } else if( align & kCALayerMinYMargin ) {
jens@8:         // Top alignment (Mac) or bottom (iPhone):
jens@1:         y += bounds.size.height - height;
jens@8:     }
jens@8:     
jens@8:     // Compute label's geometry:
jens@4:     label.bounds = CGRectMake(0, descender,
jens@8:                               bounds.size.width, height);
jens@1:     label.anchorPoint = CGPointMake(0,0);
jens@8:     label.position = CGPointMake(bounds.origin.x,y);
jens@1:     
jens@8: #if ! TARGET_OS_IPHONE
jens@1:     label.autoresizingMask = align;
jens@4: #endif
jens@1:     [superlayer addSublayer: label];
jens@1:     [label release];
jens@4:     
jens@8: #if 0 // for debugging layout, border the view
jens@8:     label.borderWidth = 1;
jens@8:     label.borderColor = kBlackColor;
jens@8: #endif
jens@4:     
jens@1:     return label;
jens@1: }
jens@1: 
jens@1: 
jens@8: #if TARGET_OS_IPHONE
jens@4: @synthesize string=_string, font=_font, 
jens@1:             foregroundColor=_foregroundColor, alignmentMode=_alignmentMode;
jens@4: 
jens@4: 
jens@4: - (id) copyWithZone: (NSZone*)zone
jens@4: {
jens@4:     GGBTextLayer *clone = [super copyWithZone: zone];
jens@4:     clone.string = _string;
jens@4:     clone.font = _font;
jens@4:     clone.foregroundColor = _foregroundColor;
jens@4:     clone.alignmentMode = _alignmentMode;
jens@4:     return clone;
jens@4: }
jens@4: 
jens@4: 
jens@4: - (void)drawInContext:(CGContextRef)ctx
jens@4: {
jens@4:     [super drawInContext: ctx];
jens@4:     
jens@4:     if( _string.length > 0 ) {
jens@4:         CGContextSaveGState(ctx);
jens@4:         UIGraphicsPushContext(ctx);
jens@4:         
jens@4:         if( _foregroundColor )
jens@4:             CGContextSetFillColorWithColor(ctx, _foregroundColor);
jens@4:         
jens@4:         UITextAlignment align;
jens@4:         if( [_alignmentMode isEqualToString: @"center"] )
jens@4:             align = UITextAlignmentCenter;
jens@4:         else if( [_alignmentMode isEqualToString: @"right"] )
jens@4:             align = UITextAlignmentRight;
jens@4:         else
jens@4:             align = UITextAlignmentLeft;
jens@4:         
jens@4:         CGRect bounds = self.bounds;
jens@8:         //float ascender=_font.ascender, descender=_font.descender, leading=_font.leading;
jens@8:         //bounds.size.height -= ascender-descender - leading;
jens@8:         
jens@4:         [_string drawInRect: bounds 
jens@4:                    withFont: _font
jens@4:               lineBreakMode: UILineBreakModeClip
jens@4:                   alignment: align];
jens@4:         
jens@4:         UIGraphicsPopContext();
jens@4:         CGContextRestoreGState(ctx);
jens@4:     }
jens@4: }
jens@4: 
jens@4: 
jens@1: #endif
jens@1: 
jens@1: 
jens@1: @end
jens@4: 
jens@4: 
jens@4: /*
jens@4:  .times lt mm: (TimesLTMM)
jens@4:  times new roman: (TimesNewRomanBoldItalic, TimesNewRomanItalic, TimesNewRoman, TimesNewRomanBold)
jens@4:  phonepadtwo: (PhonepadTwo)
jens@4:  hiragino kaku gothic pron w3: (HiraKakuProN-W3)
jens@4:  helvetica neue: (HelveticaNeueBold, HelveticaNeue)
jens@4:  trebuchet ms: (TrebuchetMSItalic, TrebuchetMSBoldItalic, TrebuchetMSBold, TrebuchetMS)
jens@4:  courier new: (CourierNewBoldItalic, CourierNewBold, CourierNewItalic, CourierNew)
jens@4:  arial unicode ms: (arialuni)
jens@4:  georgia: (Georgia, GeorgiaBold, GeorgiaBoldItalic, GeorgiaItalic)
jens@4:  zapfino: (Zapfino)
jens@4:  arial rounded mt bold: (ArialRoundedMTBold)
jens@4:  db lcd temp: (DB_LCD_Temp-Black)
jens@4:  verdana: (Verdana, VerdanaItalic, VerdanaBoldItalic, VerdanaBold)
jens@4:  american typewriter: (AmericanTypewriterCondensedBold, AmericanTypewriter)
jens@4:  helvetica: (HelveticaBoldOblique, Helvetica, HelveticaOblique, HelveticaBold)
jens@4:  lock clock: (LockClock)
jens@4:  courier: (CourierBoldOblique, CourierOblique)
jens@4:  hiragino kaku gothic pron w6: (HiraKakuProN-W6)
jens@4:  arial: (ArialItalic, ArialBold, Arial, ArialBoldItalic)
jens@4:  .helvetica lt mm: (HelveticaLTMM)
jens@4:  stheiti: (STHeiti, STXihei)
jens@4:  applegothic: (AppleGothicRegular)
jens@4:  marker felt: (MarkerFeltThin)
jens@4: */