Class: UIView
- Defined in:
- lib/sugarcube-gestures/gestures.rb,
lib/sugarcube/uiview.rb,
lib/sugarcube/to_s/uiview.rb
Overview
BubbleWrap has these same methods, but the logic and options are a little different. In the spirit of open source, I am blatantly copying their code, changing it to suit my needs, and offering it here
Class Method Summary collapse
-
.animate(options = {}, &animations) ⇒ Object
If options is a Numeric, it is used as the duration.
-
.animation_chain(options = {}, &first) ⇒ Object
Animation chains are great for consecutive animation blocks.
- .attr_updates(*attrs) ⇒ Object
-
.first_responder ⇒ Object
returns the first responder, starting at the Window and searching every subview.
Instance Method Summary collapse
-
#<<(view) ⇒ Object
superview << view => superview.addSubview(view).
-
#animate(options = {}, &animations) ⇒ Object
Same as UIView##animate, but acts on self.
-
#controller ⇒ Object
returns the nearest nextResponder instance that is a UIViewController.
- #delta_to(delta, options = {}, &after) ⇒ Object
-
#fade(options = {}, &after) ⇒ Object
Changes the layer opacity.
-
#fade_in(options = {}, &after) ⇒ Object
Changes the layer opacity to 1.
-
#fade_out(options = {}, &after) ⇒ Object
Changes the layer opacity to 0.
-
#fade_out_and_remove(options = {}, &after) ⇒ Object
Changes the layer opacity to 0 and then removes the view from its superview.
-
#first_responder ⇒ Object
returns the first responder, or nil if it cannot be found.
- #hide ⇒ Object
- #move_to(position, options = {}, &after) ⇒ Object
-
#on_gesture(klass, options = {}) {|recognizer| ... } ⇒ Object
A generic gesture adder, but accepts a block like the other gesture methods.
- #on_pan(fingers_or_options = nil) {|recognizer| ... } ⇒ Object
- #on_pinch {|recognizer| ... } ⇒ Object
- #on_press(duration_or_options = nil) {|recognizer| ... } ⇒ Object
- #on_rotate {|recognizer| ... } ⇒ Object
- #on_swipe(direction_or_options) {|recognizer| ... } ⇒ Object
- #on_tap(taps_or_options = nil) {|recognizer| ... } ⇒ Object
-
#rotate(options = {}, &after) ⇒ Object
Changes the current rotation by
new_angle
(rotate
rotates to a specific angle). -
#rotate_to(options = {}, &after) ⇒ Object
Changes the current rotation to
new_angle
(rotate
rotates relative to the current rotation). -
#shake(options = {}) ⇒ Object
Vibrates the target.
- #show ⇒ Object
- #slide(direction, options = {}, more_options = nil, &after) ⇒ Object
- #to_s(options = {}) ⇒ Object
-
#tumble(options = {}, &after) ⇒ Object
Moves the view off screen while slowly rotating it.
-
#uiimage(use_content_size = false) ⇒ Object
Easily take a snapshot of a
UIView
. - #unshift(view) ⇒ Object
Class Method Details
.animate(options = {}, &animations) ⇒ Object
If options is a Numeric, it is used as the duration. Otherwise, duration is an option, and defaults to 0.3. All the transition methods work this way.
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# File 'lib/sugarcube/uiview.rb', line 25 def animate(={}, &animations) if .is_a? Numeric duration = = {} else duration = [:duration] || 0.3 end delay = [:delay] || 0 # chain: true is used inside animation_chain blocks to prevent some weird # animation errors (nested animations do not delay/queue as you'd expect) if [:chain] || Thread.current[:sugarcube_chaining] duration = 0 delay = 0 raise "Completion blocks cannot be used within an animation_chain block" if [:after] end after_animations = [:after] if after_animations if after_animations.arity == 0 after_adjusted = ->(finished){ after_animations.call } else after_adjusted = after_animations end else after_adjusted = nil end if duration == 0 && delay == 0 animations.call after_adjusted.call(true) if after_adjusted else UIView.animateWithDuration( duration, delay: delay, options: [:options] || (UIViewAnimationOptionCurveEaseInOut|UIViewAnimationOptionBeginFromCurrentState), animations: animations, completion: after_adjusted ) end nil end |
.animation_chain(options = {}, &first) ⇒ Object
Animation chains are great for consecutive animation blocks. Each chain can take the same options that UIView##animate take.
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# File 'lib/sugarcube/uiview.rb', line 70 def animation_chain(={}, &first) chain = SugarCube::AnimationChain.new if first chain.and_then(, &first) end return chain end |
.attr_updates(*attrs) ⇒ Object
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# File 'lib/sugarcube/uiview.rb', line 10 def attr_updates(*attrs) attr_accessor(*attrs) attrs.each do |attr| define_method("#{attr}=") { |value| if instance_variable_get("@#{attr}") != value setNeedsDisplay end instance_variable_set("@#{attr}", value) } end end |
.first_responder ⇒ Object
returns the first responder, starting at the Window and searching every subview
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# File 'lib/sugarcube/uiview.rb', line 6 def first_responder UIApplication.sharedApplication.keyWindow.first_responder end |
Instance Method Details
#<<(view) ⇒ Object
superview << view => superview.addSubview(view)
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# File 'lib/sugarcube/uiview.rb', line 110 def <<(view) self.addSubview(view) return self end |
#animate(options = {}, &animations) ⇒ Object
Same as UIView##animate, but acts on self
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# File 'lib/sugarcube/uiview.rb', line 131 def animate(={}, &animations) if .is_a? Numeric duration = = {} else duration = [:duration] || 0.3 end assign = [:assign] || {} UIView.animate() { animations.call if animations assign.each_pair do |key, value| self.send("#{key}=", value) end } self end |
#controller ⇒ Object
returns the nearest nextResponder instance that is a UIViewController. Goes up the responder chain until the nextResponder is a UIViewController subclass, or returns nil if none is found.
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# File 'lib/sugarcube/uiview.rb', line 98 def controller if nextResponder && nextResponder.is_a?(UIViewController) nextResponder elsif nextResponder nextResponder.controller else nil end end |
#delta_to(delta, options = {}, &after) ⇒ Object
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# File 'lib/sugarcube/uiview.rb', line 220 def delta_to(delta, ={}, &after) f = self.frame delta = SugarCube::CoreGraphics::Point(delta) position = SugarCube::CoreGraphics::Point(f.origin) to_position = CGPoint.new(position.x + delta.x, position.y + delta.y) move_to(to_position, , &after) self end |
#fade(options = {}, &after) ⇒ Object
Changes the layer opacity.
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# File 'lib/sugarcube/uiview.rb', line 152 def fade(={}, &after) if .is_a? Numeric = { opacity: } end [:after] = after animate() { self.alpha = [:opacity] } end |
#fade_in(options = {}, &after) ⇒ Object
Changes the layer opacity to 1.
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# File 'lib/sugarcube/uiview.rb', line 178 def fade_in(={}, &after) if .is_a? Numeric = { duration: } end [:opacity] ||= 1.0 fade(, &after) end |
#fade_out(options = {}, &after) ⇒ Object
Changes the layer opacity to 0.
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# File 'lib/sugarcube/uiview.rb', line 166 def fade_out(={}, &after) if .is_a? Numeric = { duration: } end [:opacity] ||= 0.0 fade(, &after) end |
#fade_out_and_remove(options = {}, &after) ⇒ Object
Changes the layer opacity to 0 and then removes the view from its superview
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# File 'lib/sugarcube/uiview.rb', line 190 def fade_out_and_remove(={}, &after) if .is_a? Numeric = { duration: } end original_opacity = self.alpha after_remove = proc { self.alpha = original_opacity removeFromSuperview after.call if after } fade_out(, &after_remove) end |
#first_responder ⇒ Object
returns the first responder, or nil if it cannot be found
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# File 'lib/sugarcube/uiview.rb', line 81 def first_responder if self.firstResponder? return self end found = nil self.subviews.each do |subview| found = subview.first_responder break if found end return found end |
#hide ⇒ Object
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# File 'lib/sugarcube/uiview.rb', line 125 def hide self.hidden = true self end |
#move_to(position, options = {}, &after) ⇒ Object
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# File 'lib/sugarcube/uiview.rb', line 206 def move_to(position, ={}, &after) if .is_a? Numeric = { duration: } end [:after] = after animate() { f = self.frame f.origin = SugarCube::CoreGraphics::Point(position) self.frame = f } end |
#on_gesture(recognizer) ⇒ Object #on_gesture(recognizer_class) ⇒ Object
A generic gesture adder, but accepts a block like the other gesture methods
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# File 'lib/sugarcube-gestures/gestures.rb', line 19 def on_gesture(klass, ={}, &proc) if klass.is_a? UIGestureRecognizer recognizer = klass recognizer.addTarget(self, action:'sugarcube_handle_gesture:') else recognizer = klass.alloc.initWithTarget(self, action:'sugarcube_handle_gesture:') end .each do |method, value| recognizer.send(method, value) end sugarcube_add_gesture(proc, recognizer) end |
#on_tap(taps) ⇒ Object #on_tap(options) ⇒ Object
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# File 'lib/sugarcube-gestures/gestures.rb', line 113 def on_pan(=nil, &proc) fingers = nil min_fingers = nil max_fingers = nil if if .is_a? Hash fingers = [:fingers] || fingers min_fingers = [:min_fingers] || min_fingers max_fingers = [:max_fingers] || max_fingers else fingers = end end # if fingers is assigned, but not min/max, assign it as a default min_fingers ||= fingers max_fingers ||= fingers recognizer = UIPanGestureRecognizer.alloc.initWithTarget(self, action:'sugarcube_handle_gesture:') recognizer.maximumNumberOfTouches = min_fingers if min_fingers recognizer.minimumNumberOfTouches = max_fingers if max_fingers sugarcube_add_gesture(proc, recognizer) end |
#on_pinch {|recognizer| ... } ⇒ Object
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# File 'lib/sugarcube-gestures/gestures.rb', line 59 def on_pinch(&proc) recognizer = UIPinchGestureRecognizer.alloc.initWithTarget(self, action:'sugarcube_handle_gesture:') sugarcube_add_gesture(proc, recognizer) end |
#on_press(duration) ⇒ Object #on_tap(options) ⇒ Object
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# File 'lib/sugarcube-gestures/gestures.rb', line 145 def on_press(=nil, &proc) duration = nil taps = nil fingers = nil if if .is_a? Hash duration = [:duration] || duration taps = [:taps] || taps fingers = [:fingers] || fingers else duration = end end recognizer = UILongPressGestureRecognizer.alloc.initWithTarget(self, action:'sugarcube_handle_gesture:') recognizer.minimumPressDuration = duration if duration recognizer.numberOfTapsRequired = taps if taps recognizer.numberOfTouchesRequired = fingers if fingers sugarcube_add_gesture(proc, recognizer) end |
#on_rotate {|recognizer| ... } ⇒ Object
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# File 'lib/sugarcube-gestures/gestures.rb', line 65 def on_rotate(&proc) recognizer = UIRotationGestureRecognizer.alloc.initWithTarget(self, action:'sugarcube_handle_gesture:') sugarcube_add_gesture(proc, recognizer) end |
#on_swipe(taps) ⇒ Object #on_swipe(options) ⇒ Object
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# File 'lib/sugarcube-gestures/gestures.rb', line 76 def on_swipe(, &proc) direction = nil fingers = nil if if .is_a? Hash direction = [:direction] || direction fingers = [:fingers] || fingers else direction = end end case direction when :left direction = UISwipeGestureRecognizerDirectionLeft when :right direction = UISwipeGestureRecognizerDirectionRight when :up direction = UISwipeGestureRecognizerDirectionUp when :down direction = UISwipeGestureRecognizerDirectionDown end recognizer = UISwipeGestureRecognizer.alloc.initWithTarget(self, action:'sugarcube_handle_gesture:') recognizer.direction = direction if direction recognizer.numberOfTouchesRequired = fingers if fingers sugarcube_add_gesture(proc, recognizer) end |
#on_tap(taps) ⇒ Object #on_tap(options) ⇒ Object
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# File 'lib/sugarcube-gestures/gestures.rb', line 39 def on_tap(=nil, &proc) taps = nil fingers = nil if if .is_a? Hash taps = [:taps] || taps fingers = [:fingers] || fingers else taps = end end recognizer = UITapGestureRecognizer.alloc.initWithTarget(self, action:'sugarcube_handle_gesture:') recognizer.numberOfTapsRequired = taps if taps recognizer.numberOfTouchesRequired = fingers if fingers sugarcube_add_gesture(proc, recognizer) end |
#rotate(options = {}, &after) ⇒ Object
Changes the current rotation by new_angle
(rotate
rotates to a specific angle)
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# File 'lib/sugarcube/uiview.rb', line 245 def rotate(={}, &after) if .is_a? Numeric new_angle = = {} else new_angle = [:angle] end old_angle = valueForKeyPath('layer.transform.rotation.z') [:angle] = old_angle + new_angle rotate_to(, &after) end |
#rotate_to(options = {}, &after) ⇒ Object
Changes the current rotation to new_angle
(rotate
rotates relative to the current rotation)
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# File 'lib/sugarcube/uiview.rb', line 231 def rotate_to(={}, &after) if .is_a? Numeric = { angle: } end [:after] = after animate() { self.transform = CGAffineTransformMakeRotation([:angle]) } end |
#shake(options = {}) ⇒ Object
Vibrates the target. You can trick this thing out to do other effects, like:
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# File 'lib/sugarcube/uiview.rb', line 291 def shake(={}) if .is_a? Numeric duration = = {} else duration = [:duration] || 0.3 end offset = [:offset] || 8 repeat = [:repeat] || 3 if repeat == Float::INFINITY duration = 0.1 else duration /= repeat end keypath = [:keypath] || 'transform.translation.x' origin = [:origin] || 0 left = origin - offset right = origin + offset animation = CAKeyframeAnimation.animationWithKeyPath(keypath) animation.send(:'setDuration:', duration) animation.repeatCount = repeat animation.values = [origin, left, right, origin] animation.keyTimes = [0, 0.25, 0.75, 1.0] self.layer.addAnimation(animation, forKey:'shake') self end |
#show ⇒ Object
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# File 'lib/sugarcube/uiview.rb', line 120 def show self.hidden = false self end |
#slide(direction, options = {}, more_options = nil, &after) ⇒ Object
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# File 'lib/sugarcube/uiview.rb', line 258 def (direction, ={}, =nil, &after) if .is_a? Numeric size = = || {} else size = [:size] end case direction when :left size ||= self.bounds.size.width delta_to([-size, 0], , &after) when :right size ||= self.bounds.size.width delta_to([size, 0], , &after) when :up size ||= self.bounds.size.height delta_to([0, -size], , &after) when :down size ||= self.bounds.size.height delta_to([0, size], , &after) else raise "Unknown direction #{direction.inspect}" end self end |
#to_s(options = {}) ⇒ Object
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# File 'lib/sugarcube/to_s/uiview.rb', line 3 def to_s(={}) [:superview] = true if [:superview].nil? if self.respond_to? :stylename and self.stylename suffix = ' stylename: ' + self.stylename.inspect else suffix = '' end if [:inner].is_a? Hash inner = '' [:inner].each do |key, value| inner += ', ' if inner.length > 0 inner += "#{key}: #{value.inspect}" end else inner = [:inner] end "#{self.class.name}(##{self.object_id.to_s(16)}, #{SugarCube::Adjust::format_frame(self.frame)}" + (inner ? ', ' + inner : '') + ')' + ([:superview] && self.superview ? ", child of #{self.superview.class.name}(##{self.superview.object_id.to_s(16)})" : '') + suffix end |
#tumble(options = {}, &after) ⇒ Object
Moves the view off screen while slowly rotating it.
Based on https://github.com/warrenm/AHAlertView/blob/master/AHAlertView/AHAlertView.m
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# File 'lib/sugarcube/uiview.rb', line 324 def tumble(={}, &after) if .is_a? Numeric default_duration = = {} else default_duration = 0.3 end [:duration] ||= default_duration [:options] ||= UIViewAnimationOptionCurveEaseIn|UIViewAnimationOptionBeginFromCurrentState reset_transform = self.transform reset_after = ->(finished) { self.transform = reset_transform } if after [:after] = ->(finished) { reset_after.call(finished) if after.arity == 0 after.call else after.call(finished) end } else [:after] = reset_after end self.animate() { offset = CGPoint.new(0, self.superview.bounds.size.height * 1.5) offset = CGPointApplyAffineTransform(offset, self.transform) self.transform = CGAffineTransformConcat(self.transform, CGAffineTransformMakeRotation(-Math::PI/4)) self.center = CGPointMake(self.center.x + offset.x, self.center.y + offset.y) } end |
#uiimage(use_content_size = false) ⇒ Object
Easily take a snapshot of a UIView
.
Calling uiimage
with no arguments will return the image based on the
bounds
of the image. In the case of container views (notably
UIScrollView
and its children) this does not include the entire contents,
which is something you probably want.
If you pass a truthy value to this method, it will use the contentSize
of
the view instead of the bounds
, and it will draw all the child views, not
just those that are visible in the viewport.
It is guaranteed that true
and :all
will always have this behavior. In
the future, if this argument becomes something that accepts multiple values,
those two are sacred.
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# File 'lib/sugarcube/uiview.rb', line 375 def uiimage(use_content_size=false) scale = UIScreen.mainScreen.scale if use_content_size UIGraphicsBeginImageContextWithOptions(contentSize, false, scale) context = UIGraphicsGetCurrentContext() subviews.each do |subview| CGContextSaveGState(context) CGContextTranslateCTM(context, subview.frame.origin.x, subview.frame.origin.y) subview.layer.renderInContext(context) CGContextRestoreGState(context) end image = UIGraphicsGetImageFromCurrentImageContext() UIGraphicsEndImageContext() else UIGraphicsBeginImageContextWithOptions(bounds.size, false, scale) layer.renderInContext(UIGraphicsGetCurrentContext()) image = UIGraphicsGetImageFromCurrentImageContext() UIGraphicsEndImageContext() end return image end |
#unshift(view) ⇒ Object
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# File 'lib/sugarcube/uiview.rb', line 115 def unshift(view) self.insertSubview(view, atIndex:0) return self end |