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authorPaul Gardiner <paul.gardiner@artifex.com>2013-11-20 13:57:48 +0000
committerPaul Gardiner <paul.gardiner@artifex.com>2013-11-20 13:57:48 +0000
commitcaa1a62c422fd73c2dadf3fc74f8a207c1f5ea14 (patch)
tree5982b8e5e5f3539a7184fd68883a50fa148be13c /platform/ios/Classes/MuInkView.m
parent6f532f78076d2bb24a8c6cf47c0f45994fa5b707 (diff)
downloadmupdf-caa1a62c422fd73c2dadf3fc74f8a207c1f5ea14.tar.xz
iOS: support creation of Ink annotations
Diffstat (limited to 'platform/ios/Classes/MuInkView.m')
-rw-r--r--platform/ios/Classes/MuInkView.m84
1 files changed, 84 insertions, 0 deletions
diff --git a/platform/ios/Classes/MuInkView.m b/platform/ios/Classes/MuInkView.m
new file mode 100644
index 00000000..6ac4d1dc
--- /dev/null
+++ b/platform/ios/Classes/MuInkView.m
@@ -0,0 +1,84 @@
+//
+// MuInkView.m
+// MuPDF
+//
+// Copyright (c) 2013 Artifex Software, Inc. All rights reserved.
+//
+
+#include "common.h"
+#import "MuInkView.h"
+
+@implementation MuInkView
+
+- (id) initWithPageSize:(CGSize)_pageSize
+{
+ self = [super initWithFrame:CGRectMake(0, 0, 100, 100)];
+ if (self) {
+ [self setOpaque:NO];
+ pageSize = _pageSize;
+ color = [[UIColor colorWithRed:1.0 green:0.0 blue:0.0 alpha:1.0] retain];
+ curves = [[NSMutableArray array] retain];
+ UIPanGestureRecognizer *rec = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(onDrag:)];
+ [self addGestureRecognizer:rec];
+ [rec release];
+ }
+ return self;
+}
+
+@synthesize curves;
+
+-(void)dealloc
+{
+ [curves release];
+ [color release];
+ [super dealloc];
+}
+
+-(void) onDrag:(UIPanGestureRecognizer *)rec
+{
+ CGSize scale = fitPageToScreen(pageSize, self.bounds.size);
+ CGPoint p = [rec locationInView:self];
+ p.x /= scale.width;
+ p.y /= scale.height;
+
+ if (rec.state == UIGestureRecognizerStateBegan)
+ [curves addObject:[NSMutableArray array]];
+
+ NSMutableArray *curve = [curves lastObject];
+ [curve addObject:[NSValue valueWithCGPoint:p]];
+
+ [self setNeedsDisplay];
+}
+
+- (void)drawRect:(CGRect)rect
+{
+ CGSize scale = fitPageToScreen(pageSize, self.bounds.size);
+ CGContextRef cref = UIGraphicsGetCurrentContext();
+ CGContextScaleCTM(cref, scale.width, scale.height);
+
+ [color set];
+ CGContextSetLineWidth(cref, 5.0);
+
+ for (NSArray *curve in curves)
+ {
+ if (curve.count >= 2)
+ {
+ CGPoint pt = [[curve objectAtIndex:0] CGPointValue];
+ CGContextBeginPath(cref);
+ CGContextMoveToPoint(cref, pt.x, pt.y);
+ CGPoint lpt = pt;
+
+ for (int i = 1; i < curve.count; i++)
+ {
+ pt = [[curve objectAtIndex:i] CGPointValue];
+ CGContextAddQuadCurveToPoint(cref, lpt.x, lpt.y, (pt.x + lpt.x)/2, (pt.y + lpt.y)/2);
+ lpt = pt;
+ }
+
+ CGContextAddLineToPoint(cref, pt.x, pt.y);
+ CGContextStrokePath(cref);
+ }
+ }
+}
+
+@end