2014/10/15 下午 10:13:43

iphone Programming Glossary: segments

setting background image of UISegmentedControl

http://stackoverflow.com/questions/10740373/setting-background-image-of-uisegmentedcontrol

objective c ios ipad uisegmentedcontrol share improve this question UISegmentControl has a Divider between two segments. By using the following code you can change the divider background. segmentedCtrl setDividerImage UIImage imageNamed @ divider_selected.png..

How to crop a UIImageView to a custom shape

http://stackoverflow.com/questions/13015676/how-to-crop-a-uiimageview-to-a-custom-shape

starts stroking the region call CGContextBeginPath then follow user gestures sampling the touches and adding small segments by calling CGContextMoveToPoint repeatedly as touchesMoved. Create mask To turn the path into a mask you want a black background..

Boundry detect paper sheet opencv

http://stackoverflow.com/questions/13493035/boundry-detect-paper-sheet-opencv

squares with gradient shading if l 0 Canny gray0 gray 10 20 3 Dilate helps to remove potential holes between edge segments dilate gray gray Mat cv Point 1 1 else gray gray0 l 1 255 threshold_level Find contours and store them in a list findContours..

Drag UIView around Shape Comprised of CGMutablePaths

http://stackoverflow.com/questions/13664615/drag-uiview-around-shape-comprised-of-cgmutablepaths

it for us. We can use CGPathCreateCopyByDashingPath with a short dash pattern. This creates a new path with many short segments. We'll take the endpoints of each segment as our array of points. That means we need to iterate over the elements of a CGPath.. cgDashedPath CGPathRelease cgDashedPath It turns out that when Core Graphics dashes the path it can create segments that slightly overlap. We'll want to eliminate those by filtering out each point that's too close to its predecessor so..

UISegmentedControl register taps on selected segment

http://stackoverflow.com/questions/1620972/uisegmentedcontrol-register-taps-on-selected-segment

is tapped the order gets inverted. I have all the code in place but I don't know how to register the taps on those segments. It seems the only control event you can use is UIControlEventValueChanged but that isn't working since the selected segment..

Need approach to show tables using segmented control?

http://stackoverflow.com/questions/2078200/need-approach-to-show-tables-using-segmented-control

With the help of this segmented control I would like to display to different tables on my view Suppose I have two segments in my table on tap of segment 1 I would like to display table 1 and on tap of segment 2 I would like to display table 2..

UISegmentedControl selected segment color

http://stackoverflow.com/questions/2270526/uisegmentedcontrol-selected-segment-color

its color is almost the same as the rest of segmented control so its hard to distinguish selected and unselected segments . So I cannot use any good bright colors for segmented control. The solution would be some separate property for selected..

How to draw a rounded rectangle in Core Graphics / Quartz 2D?

http://stackoverflow.com/questions/2835448/how-to-draw-a-rounded-rectangle-in-core-graphics-quartz-2d

iPhone smooth sketch drawing algorithm

http://stackoverflow.com/questions/5076622/iphone-smooth-sketch-drawing-algorithm

improve this question The easiest way to smooth a curve like this is to use a Bezier curve instead of straight line segments. For the math behind this see this article pointed to in this answer which describes how to calculate the curves required..

How to create custom easing function with Core Animation?

http://stackoverflow.com/questions/5161465/how-to-create-custom-easing-function-with-core-animation

the timing function to get a different effect. Yes it's possible to do line bouncing by creating and joining four line segments which goes back and forth but that shouldn't be necessary. After all it's just a simple linear function which maps time..

UISegmentedControl text with multiple lines?

http://stackoverflow.com/questions/5614284/uisegmentedcontrol-text-with-multiple-lines

create a multiline UILabel fill the label with N lines of text convert the label into an UIImage set the image as a segments content This works smooth on iOS 4 ... 6 MultiLineSegmentedControl header file MultiLineSegmentedControl.h Created by Jens..

Are there examples of how to use UIPopoverController on iOS?

http://stackoverflow.com/questions/5744434/are-there-examples-of-how-to-use-uipopovercontroller-on-ios

Is it possible to use it in relation to UISegmentedControl where different popover windows are summoned when different segments are selected as a type of a switch view function iphone ios ipad uipopovercontroller share improve this question Here..

iOS: parse a URL into segments

http://stackoverflow.com/questions/5903157/ios-parse-a-url-into-segments

parse a URL into segments What's an efficient way to take an NSURL object such as the following foo name 12345 and break it up into one string and..

Why is UIBezierPath faster than Core Graphics path?

http://stackoverflow.com/questions/6327817/why-is-uibezierpath-faster-than-core-graphics-path

cgpath NULL 0 100 UIBezierPath uipath UIBezierPath alloc init uipath moveToPoint CGPointMake 0 200 Add 200 curve segments to each path. int iterations 200 CGFloat cgBaseline 100 CGFloat uiBaseline 200 CGFloat xincrement self.bounds.size.width.. cgpath NULL 0 100 UIBezierPath uipath UIBezierPath alloc init uipath moveToPoint CGPointMake 0 200 Add 200 curve segments to each path. int iterations 80000 CGFloat cgBaseline 100 CGFloat uiBaseline 200 CGFloat xincrement self.bounds.size.width..

UISegmentcontrol appearances causing issues

http://stackoverflow.com/questions/8415922/uisegmentcontrol-appearances-causing-issues

UIOffsetMake 0 1 UITextAttributeTextShadowOffset nil forState UIControlStateHighlighted IBAction call Get number of segments int numSegments infoSegment.subviews count Reset segment's color non selected color for int i 0 i numSegments i reset color.. objectAtIndex i setTintColor UIColor colorWithRed 196.0 255.0 green 223.0 255.0 blue 155.0 255.0 alpha 1 Sort segments from left to right NSArray sortedViews infoSegment.subviews sortedArrayUsingFunction compareViewsByOrigin context NULL Change.. setTintColor UIColor colorWithRed 51.0 255.0 green 166.0 255.0 blue 85.0 255.0 alpha 1 Remove all original segments from the control for id view in infoSegment.subviews view removeFromSuperview Append sorted and colored segments to the..