iPhoneOS build support, Quartz-based text layout

diff --git a/plugin/quartz/GVTextLayout.h b/plugin/quartz/GVTextLayout.h
new file mode 100644 (file)
index 0000000..ad53b4d
--- /dev/null
+++ b/plugin/quartz/GVTextLayout.h
@@ -0,0 +1,27 @@
+//
+//  GVTextLayout.h
+//  
+//
+//  Created by Glen Low on 3/01/09.
+//  Copyright 2009 Pixelglow Software. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+@interface GVTextLayout : NSObject
+{
+       UIFont* _font;
+       NSString* _text;
+}
+
+@property (readonly, nonatomic) UIFont* font;
+@property (readonly, nonatomic) NSString* text;
+@property (readonly, nonatomic) CGSize size;
+
+- (id)initWithFontName:(char*)fontName fontSize:(CGFloat)fontSize text:(char*)text;
+
+- (void)drawAtPoint:(CGPoint)point inContext:(CGContextRef)context;
+
+- (void)dealloc;
+
+@end

diff --git a/plugin/quartz/GVTextLayout.m b/plugin/quartz/GVTextLayout.m
new file mode 100644 (file)
index 0000000..b7956c8
--- /dev/null
+++ b/plugin/quartz/GVTextLayout.m
@@ -0,0 +1,125 @@
+//
+//  GVTextLayout.m
+//  
+//
+//  Created by Glen Low on 3/01/09.
+//  Copyright 2009 Pixelglow Software. All rights reserved.
+//
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "types.h"
+#include "gvcjob.h"
+
+#include "gvplugin_quartz.h"
+
+#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 20000
+
+#import "GVTextLayout.h"
+
+boolean quartz_textlayout(textpara_t *para, char **fontpath)
+{
+       GVTextLayout* layout = [[GVTextLayout alloc] initWithFontName:para->fontname fontSize:para->fontsize text:para->str];
+       CGSize size = layout.size;
+       
+       para->layout = layout;
+       para->free_layout = &quartz_free_layout;
+       para->width = size.width;
+       para->height = size.height;
+       para->yoffset_layout = layout.font.ascender;
+       para->yoffset_centerline = 0;
+       
+       return TRUE;
+}
+
+void quartz_free_layout(void *layout)
+{
+       [(GVTextLayout*)layout release];
+}
+
+void quartzgen_textpara(GVJ_t *job, pointf p, textpara_t *para)
+{
+       CGContextRef context = (CGContextRef)job->context;
+
+       /* adjust text position */
+       switch (para->just) {
+               case 'r':
+                       p.x -= para->width;
+                       break;
+               case 'l':
+                       p.x -= 0.0;
+                       break;
+               case 'n':
+               default:
+                       p.x -= para->width / 2.0;
+                       break;
+               }
+       p.y += para->yoffset_centerline;
+       
+       GVTextLayout* layout;
+       if (para->free_layout == &quartz_free_layout)
+               layout = (GVTextLayout*)para->layout;
+       else
+               layout = [[GVTextLayout alloc] initWithFontName:para->fontname fontSize:para->fontsize text:para->str];
+               
+       CGContextSaveGState(context);
+       CGContextScaleCTM(context, 1.0, -1.0);
+       CGContextSetRGBFillColor(context, job->obj->pencolor.u.RGBA [0], job->obj->pencolor.u.RGBA [1], job->obj->pencolor.u.RGBA [2], job->obj->pencolor.u.RGBA [3]);
+       [layout drawAtPoint:CGPointMake(p.x, -p.y - para->yoffset_layout) inContext:context];
+       CGContextRestoreGState(context);
+       
+       if (para->free_layout != &quartz_free_layout)
+               [layout release];
+}
+
+static NSString* _defaultFontName = @"TimesNewRomanPSMT";
+
+@implementation GVTextLayout
+
+@synthesize font = _font;
+@synthesize text = _text;
+
+- (id)initWithFontName:(char*)fontName fontSize:(CGFloat)fontSize text:(char*)text
+{
+       if (self = [super init])
+       {
+               _font = nil;
+               if (fontName)
+                       _font = [[UIFont fontWithName:[NSString stringWithUTF8String:fontName] size:fontSize] retain];
+               if (!_font)
+                       _font = [[UIFont fontWithName:_defaultFontName size:fontSize] retain];
+                       
+               _text = text ? [[NSString alloc] initWithUTF8String:text] : nil;
+       }
+       return self;
+}
+
+- (void)drawAtPoint:(CGPoint)point inContext:(CGContextRef)context
+{
+       UIGraphicsPushContext(context);
+       [_text drawAtPoint:point withFont:_font];
+       UIGraphicsPopContext();
+}
+
+- (CGSize)size
+{
+       return [_text sizeWithFont:_font];
+}
+
+- (void)dealloc
+{
+       [_font release];
+       [_text release];
+       
+       [super dealloc];
+}
+
+
+@end
+
+#endif

diff --git a/plugin/quartz/Makefile.am b/plugin/quartz/Makefile.am
index 4899a115d53126882d973858d65aa45c29eb8675..c74525c2fcf534f88f2f27407c2d49aacddc6c36 100644 (file)
--- a/plugin/quartz/Makefile.am
+++ b/plugin/quartz/Makefile.am
@@ -25,7 +25,9 @@ libgvplugin_quartz_C_la_SOURCES = \
        gvdevice_quartz.c \
        gvloadimage_quartz.c \
        gvplugin_quartz.c \
-       gvrender_quartz.c
+       gvrender_quartz.c \
+       gvtextlayout_quartz.c \
+       GVTextLayout.m
 
 libgvplugin_quartz_la_LDFLAGS = -version-info @GVPLUGIN_VERSION_INFO@
 libgvplugin_quartz_la_SOURCES = $(libgvplugin_quartz_C_la_SOURCES)