|
1 // |
|
2 // MGSplitCornersView.m |
|
3 // MGSplitView |
|
4 // |
|
5 // Created by Matt Gemmell on 28/07/2010. |
|
6 // Copyright 2010 Instinctive Code. |
|
7 // |
|
8 |
|
9 #import "MGSplitCornersView.h" |
|
10 |
|
11 |
|
12 @implementation MGSplitCornersView |
|
13 |
|
14 |
|
15 #pragma mark - |
|
16 #pragma mark Setup and teardown |
|
17 |
|
18 |
|
19 - (id)initWithFrame:(CGRect)frame |
|
20 { |
|
21 if ((self = [super initWithFrame:frame])) { |
|
22 self.contentMode = UIViewContentModeRedraw; |
|
23 self.userInteractionEnabled = NO; |
|
24 self.opaque = NO; |
|
25 self.backgroundColor = [UIColor clearColor]; |
|
26 cornerRadius = 0.0; // actual value is set by the splitViewController. |
|
27 cornersPosition = MGCornersPositionLeadingVertical; |
|
28 } |
|
29 |
|
30 return self; |
|
31 } |
|
32 |
|
33 |
|
34 - (void)dealloc |
|
35 { |
|
36 self.cornerBackgroundColor = nil; |
|
37 |
|
38 [super dealloc]; |
|
39 } |
|
40 |
|
41 |
|
42 #pragma mark - |
|
43 #pragma mark Geometry helpers |
|
44 |
|
45 |
|
46 double deg2Rad(double degrees) |
|
47 { |
|
48 // Converts degrees to radians. |
|
49 return degrees * (M_PI / 180.0); |
|
50 } |
|
51 |
|
52 |
|
53 double rad2Deg(double radians) |
|
54 { |
|
55 // Converts radians to degrees. |
|
56 return radians * (180 / M_PI); |
|
57 } |
|
58 |
|
59 |
|
60 #pragma mark - |
|
61 #pragma mark Drawing |
|
62 |
|
63 |
|
64 - (void)drawRect:(CGRect)rect |
|
65 { |
|
66 // Draw two appropriate corners, with cornerBackgroundColor behind them. |
|
67 if (cornerRadius > 0) { |
|
68 if (NO) { // just for debugging. |
|
69 [[UIColor redColor] set]; |
|
70 UIRectFill(self.bounds); |
|
71 } |
|
72 |
|
73 float maxX = CGRectGetMaxX(self.bounds); |
|
74 float maxY = CGRectGetMaxY(self.bounds); |
|
75 UIBezierPath *path = [UIBezierPath bezierPath]; |
|
76 CGPoint pt = CGPointZero; |
|
77 switch (cornersPosition) { |
|
78 case MGCornersPositionLeadingVertical: // top of screen for a left/right split |
|
79 [path moveToPoint:pt]; |
|
80 pt.y += cornerRadius; |
|
81 [path appendPath:[UIBezierPath bezierPathWithArcCenter:pt radius:cornerRadius startAngle:deg2Rad(90) endAngle:0 clockwise:YES]]; |
|
82 pt.x += cornerRadius; |
|
83 pt.y -= cornerRadius; |
|
84 [path addLineToPoint:pt]; |
|
85 [path addLineToPoint:CGPointZero]; |
|
86 [path closePath]; |
|
87 |
|
88 pt.x = maxX - cornerRadius; |
|
89 pt.y = 0; |
|
90 [path moveToPoint:pt]; |
|
91 pt.y = maxY; |
|
92 [path addLineToPoint:pt]; |
|
93 pt.x += cornerRadius; |
|
94 [path appendPath:[UIBezierPath bezierPathWithArcCenter:pt radius:cornerRadius startAngle:deg2Rad(180) endAngle:deg2Rad(90) clockwise:YES]]; |
|
95 pt.y -= cornerRadius; |
|
96 [path addLineToPoint:pt]; |
|
97 pt.x -= cornerRadius; |
|
98 [path addLineToPoint:pt]; |
|
99 [path closePath]; |
|
100 |
|
101 break; |
|
102 |
|
103 case MGCornersPositionTrailingVertical: // bottom of screen for a left/right split |
|
104 pt.y = maxY; |
|
105 [path moveToPoint:pt]; |
|
106 pt.y -= cornerRadius; |
|
107 [path appendPath:[UIBezierPath bezierPathWithArcCenter:pt radius:cornerRadius startAngle:deg2Rad(270) endAngle:deg2Rad(360) clockwise:NO]]; |
|
108 pt.x += cornerRadius; |
|
109 pt.y += cornerRadius; |
|
110 [path addLineToPoint:pt]; |
|
111 pt.x -= cornerRadius; |
|
112 [path addLineToPoint:pt]; |
|
113 [path closePath]; |
|
114 |
|
115 pt.x = maxX - cornerRadius; |
|
116 pt.y = maxY; |
|
117 [path moveToPoint:pt]; |
|
118 pt.y -= cornerRadius; |
|
119 [path addLineToPoint:pt]; |
|
120 pt.x += cornerRadius; |
|
121 [path appendPath:[UIBezierPath bezierPathWithArcCenter:pt radius:cornerRadius startAngle:deg2Rad(180) endAngle:deg2Rad(270) clockwise:NO]]; |
|
122 pt.y += cornerRadius; |
|
123 [path addLineToPoint:pt]; |
|
124 pt.x -= cornerRadius; |
|
125 [path addLineToPoint:pt]; |
|
126 [path closePath]; |
|
127 |
|
128 break; |
|
129 |
|
130 case MGCornersPositionLeadingHorizontal: // left of screen for a top/bottom split |
|
131 pt.x = 0; |
|
132 pt.y = cornerRadius; |
|
133 [path moveToPoint:pt]; |
|
134 pt.y -= cornerRadius; |
|
135 [path addLineToPoint:pt]; |
|
136 pt.x += cornerRadius; |
|
137 [path appendPath:[UIBezierPath bezierPathWithArcCenter:pt radius:cornerRadius startAngle:deg2Rad(180) endAngle:deg2Rad(270) clockwise:NO]]; |
|
138 pt.y += cornerRadius; |
|
139 [path addLineToPoint:pt]; |
|
140 pt.x -= cornerRadius; |
|
141 [path addLineToPoint:pt]; |
|
142 [path closePath]; |
|
143 |
|
144 pt.x = 0; |
|
145 pt.y = maxY - cornerRadius; |
|
146 [path moveToPoint:pt]; |
|
147 pt.y = maxY; |
|
148 [path addLineToPoint:pt]; |
|
149 pt.x += cornerRadius; |
|
150 [path appendPath:[UIBezierPath bezierPathWithArcCenter:pt radius:cornerRadius startAngle:deg2Rad(180) endAngle:deg2Rad(90) clockwise:YES]]; |
|
151 pt.y -= cornerRadius; |
|
152 [path addLineToPoint:pt]; |
|
153 pt.x -= cornerRadius; |
|
154 [path addLineToPoint:pt]; |
|
155 [path closePath]; |
|
156 |
|
157 break; |
|
158 |
|
159 case MGCornersPositionTrailingHorizontal: // right of screen for a top/bottom split |
|
160 pt.y = cornerRadius; |
|
161 [path moveToPoint:pt]; |
|
162 pt.y -= cornerRadius; |
|
163 [path appendPath:[UIBezierPath bezierPathWithArcCenter:pt radius:cornerRadius startAngle:deg2Rad(270) endAngle:deg2Rad(360) clockwise:NO]]; |
|
164 pt.x += cornerRadius; |
|
165 pt.y += cornerRadius; |
|
166 [path addLineToPoint:pt]; |
|
167 pt.x -= cornerRadius; |
|
168 [path addLineToPoint:pt]; |
|
169 [path closePath]; |
|
170 |
|
171 pt.y = maxY - cornerRadius; |
|
172 [path moveToPoint:pt]; |
|
173 pt.y += cornerRadius; |
|
174 [path appendPath:[UIBezierPath bezierPathWithArcCenter:pt radius:cornerRadius startAngle:deg2Rad(90) endAngle:0 clockwise:YES]]; |
|
175 pt.x += cornerRadius; |
|
176 pt.y -= cornerRadius; |
|
177 [path addLineToPoint:pt]; |
|
178 pt.x -= cornerRadius; |
|
179 [path addLineToPoint:pt]; |
|
180 [path closePath]; |
|
181 |
|
182 break; |
|
183 |
|
184 default: |
|
185 break; |
|
186 } |
|
187 |
|
188 [self.cornerBackgroundColor set]; |
|
189 [path fill]; |
|
190 } |
|
191 } |
|
192 |
|
193 |
|
194 #pragma mark - |
|
195 #pragma mark Accessors and properties |
|
196 |
|
197 |
|
198 - (void)setCornerRadius:(float)newRadius |
|
199 { |
|
200 if (newRadius != cornerRadius) { |
|
201 cornerRadius = newRadius; |
|
202 [self setNeedsDisplay]; |
|
203 } |
|
204 } |
|
205 |
|
206 |
|
207 - (void)setSplitViewController:(MGSplitViewController *)theController |
|
208 { |
|
209 if (theController != splitViewController) { |
|
210 splitViewController = theController; |
|
211 [self setNeedsDisplay]; |
|
212 } |
|
213 } |
|
214 |
|
215 |
|
216 - (void)setCornersPosition:(MGCornersPosition)posn |
|
217 { |
|
218 if (cornersPosition != posn) { |
|
219 cornersPosition = posn; |
|
220 [self setNeedsDisplay]; |
|
221 } |
|
222 } |
|
223 |
|
224 |
|
225 - (void)setCornerBackgroundColor:(UIColor *)color |
|
226 { |
|
227 if (color != cornerBackgroundColor) { |
|
228 [cornerBackgroundColor release]; |
|
229 cornerBackgroundColor = [color retain]; |
|
230 [self setNeedsDisplay]; |
|
231 } |
|
232 } |
|
233 |
|
234 |
|
235 @synthesize cornerRadius; |
|
236 @synthesize splitViewController; |
|
237 @synthesize cornersPosition; |
|
238 @synthesize cornerBackgroundColor; |
|
239 |
|
240 |
|
241 @end |