TAOverlay is a minimalistic and simple overlay meant to display useful information to the user.

What's new in v2.0.1

• Added completion block support on overlay hide
• Enhanced hide methods
• Added progress indicator overlay type
• Added more customization methods
• Bug fixes

Requirements

• iOS 7.0+
• ARC

Installation

TAOverlay can be installed using either of the following:

CocoaPods

Add the following to your podfile

pod 'TAOverlay'

Manual

• Drag the TAOverlay/TAOverlay folder into your project.
• Ensure that TAOverlay.bundle is added to Targets->Build Phases->Copy Bundle Resources.
• import "TAOverlay.h"

Usage

Using TAOverlay in your app is very simple.

Showing TAOverlay

You can show the TAOverlay using one of the following:

+ (void) showOverlayWithLabel:(NSString *)status Options:(TAOverlayOptions)options;

• The status parameter is the text to display on the overlay. If the value is 'nil', overlay is shown without a label
• The options parameter is mask of options indicating the type and appearence of the overlay

+ (void) showOverlayWithLabel:(NSString *)status Image:(UIImage *)image Options:(TAOverlayOptions)options;

• The status parameter is the text to display on the overlay. If the value is 'nil', overlay is shown without a label
• The image parameter is the image to display as an icon on the overlay. The image cannot be 'nil'
• The options parameter is mask of options indicating the appearence of the overlay

+ (void) showOverlayWithLabel:(NSString *)status ImageArray:(NSArray *)imageArray Duration:(CGFloat)duration Options:(TAOverlayOptions)options;

• The status parameter is the text that you want displayed
• The imageArray parameter is an array containing UIImage objects. Use this if your animation is easily expressable in images. The array cannot be 'nil'
• The duration parameter is the duration of the animation to cycle through the array of images
• The options parameter is mask of options indicating the appearence of the overlay

Dismissing TAOverlay

You can hide the TAOverlay using:

+ (void) hideOverlay;

• Hides the currently shown overlay

+ (void) hideOverlayWithCompletion;

• Hides the currently shown overlay and runs a set block of code

+ (void)hideOverlayWithCompletionBlock:(void (^)(BOOL finished))completionBlock;

• Hides the currently shown overlay and runs a given block of code
• The completionBlock parameter is the block of code you want to run after the overlay hides

Example

[TAOverlay showOverlayWithLabel:@"This is the status" Options:(TAOverlayOptionOverlayTypeActivityDefault | TAOverlayOptionAllowUserInteraction | TAOverlayOptionOverlaySizeFullScreen | TAOverlayOptionAutoHide)];

The above shows the TAOverlay with the following properties:

• It's status is "This is a status"
• It's type is the default iOS Activity Indicator
• It's size is fullscreen
• It has user interaction enabled
• It has auto hide enabled

( More on these optons below )

Customization

TAOverlay has a lot of customization options.

Customization methods

You can customize the TAOverlay using one of the following:

+ (void)setOverlayBackgroundColor:(UIColor *)color;

• The color parameter is the color you want to set as the overlay background color

+ (void)setOverlayLabelFont:(UIFont *)font;

• The font parameter is the font you want to set as the overlay label font

+ (void)setOverlayLabelTextColor:(UIColor *)color;

• The color parameter is the color you want to set as the overlay label text color

+ (void)setOverlayShadowColor:(UIColor *)color;

• The color parameter is the color you want to set as the overlay shadow color

 (void)setOverlayLabelText:(NSString *)text;

• The text parameter is the text you want to set as the overlay label text

+ (void)setOverlayIconColor:(UIColor *)color;

• The color parameter is the color you want to set as the overlay sucess, failure, info and warning icon color

+ (void)setOverlayProgressColor:(UIColor *)color;

• The color parameter is the color you want to set as the overlay progress indicator color

+ (void)setOverlayProgress:(CGFloat)overlayProgress;

• The overlayProgress parameter is the overlay progress you want to set for the overlay progress indicator. The value must be between 0.0 to 1.0. Default is 0.0.

+ (void)setCompletionBlock:(void (^)(BOOL))completionBlock;

• The completionBlock parameter is the block of code you want to run after the overlay hides

TAOverlayOptions

TAOverlayOptions defines the following set of bitmasks that can be used to fine tune the appearence of the overlay:
( passed as parameters in the "show" methods of TAOverlay )

Appearence options

• TAOverlayOptionOpaqueBackground option indicates that the overlay does not have a blur effect, rather, a solid background

• TAOverlayOptionOverlayShadow options indicates that the overlay has a semi-transparent shadow over the whole screen behind it

• TAOverlayOptionAutoHide option indicates that the overlay auto hides after a certain time, based on the length of the status string

Interaction options

• TAOverlayOptionAllowUserInteraction option indicates that the user can interact with objects behind the overlay

If the above option is not present, the folowing options establish how the user dismisses the overlay:

• TAOverlayOptionOverlayDismissTap option lets the user dismiss the overlay with a tap gesture

• TAOverlayOptionOverlayDismissSwipeUp option lets the user dismiss the overlay by swiping up

• TAOverlayOptionOverlayDismissSwipeDown option lets the user dismiss the overlay by swiping down

• TAOverlayOptionOverlayDismissSwipeLeft option lets the user dismiss the overlay by swiping left

• TAOverlayOptionOverlayDismissSwipeRight option lets the user dismiss the overlay by swiping right

Type options

• TAOverlayOptionOverlayTypeActivityDefault option indicates that the overlay shows ongoing activity using the default iOS Activity Indicator

• TAOverlayOptionOverlayTypeActivityLeaf options indicates that the overlay shows ongoing activity using a custom activity indicator of the style of a leaf - Default option

• TAOverlayOptionOverlayTypeActivityBlur option indicates that the overlay shows ongoing activity using a custom activity indicator of the style of a blurred halo

• TAOverlayOptionOverlayTypeActivitySquare option indicates that the overlay shows ongoing activity using a custom activity indicator of the style of a rounded rectangle

• TAOverlayOptionOverlayTypeSuccess option indicates that the overlay shows a check mark inside a circle, signifying, successful completion of a task

• TAOverlayOptionOverlayTypeWarning option indicates that the overlay shows an exclamation mark inside a circle, warning the user of something

• TAOverlayOptionOverlayTypeError option indicates that the overlay shows a cross mark inside a circle, signifying, an un-successful event

• TAOverlayOptionOverlayTypeInfo option indicates that the overlay shows an information mark inside a circle, informing the user of something

• TAOverlayOptionOverlayTypeProgress option indicates that the overlay shows a progress indicator - Progress handler methods available

• TAOverlayOptionOverlayTypeText option indicates that the overlay just shows text

Size options

• TAOverlayOptionOverlaySizeFullScreen option indicates that the overlay fills the whole screen

• TAOverlayOptionOverlaySizeBar options indicates that the overlay takes a bar like shape Default option

• TAOverlayOptionOverlaySizeRoundedRect option indicates that the overlay takes a rounded rect shape

Definitions

The header file includes the following definitions to tweak the appearence of the overlay:

• OVERLAY_LABEL_FONT The font of the status label

• OVERLAY_LABEL_COLOR The text color of the status label

• OVERLAY_ACTIVITY_DEFAULT_COLOR The color of the default type activity indicator

• OVERLAY_ACTIVITY_LEAF_COLOR The color of the leaf type activity indicator

• OVERLAY_ACTIVITY_BLUR_COLOR The color of the blur type activity indicator

• OVERLAY_ACTIVITY_SQUARE_COLOR The color of the square type activity indicator

• OVERLAY_SHADOW_COLOR The color of the semi-transparent shadow behind the overlay

• OVERLAY_BACKGROUND_COLOR The color of the background of the overlay

• OVERLAY_BLUR_TINT_COLOR The tint color of the blur of the overlay

• OVERLAY_SUCCESS_COLOR The color of the success icon

• OVERLAY_WARNING_COLOR The color of the warning icon

• OVERLAY_ERROR_COLOR The color of the error icon

• OVERLAY_INFO_COLOR The color of the information icon

• OVERLAY_PROGRESS_COLOR The progress fill color of the progress indicator, if one is shown.

• OVERLAY_ICON_THICKNESS The thickness of success, warning, error and information icons

• ANIMATION_DURATION The animation duration of the appearence and disappearence animations

Custom images

Custom images can be shown using the latter of the "show" methods described above. TAOverlay includes a UIImage category for masking images to a specific color. Use the following method to do so:

- (UIImage *) maskImageWithColor:(UIColor *)color;

• The color parameter is the color with which a given image is masked
• The return value is the masked image

Notifications

TAOverlay posts the following notifications via NSNotificationCenter:

• TAOverlayWillAppearNotification when the show animation starts.

• TAOverlayDidAppearNotification when the show animation completes.

• TAOverlayWillDisappearNotification when the dismiss animation starts.

• TAOverlayDidDisappearNotification when the dismiss animation completes.

• TAOverlayProgressCompletedNotification when a progress type overlay, completes the progress indicator.

Each notification passes a userInfo dictionary holding the Overlay's status string (if any), retrievable via TAOverlayStatusUserInfoKey.

ToDo

• Enhance overlay to more than just providing information

Contributing to this project

If you have feature requests or bug reports, feel free to help out by sending pull requests or by creating new issues :)

Credits

TAOverlay is brought to you by Taimur Ayaz. If you're using TAOverlay in your project, attribution would be much appreciated :)

License

Copyright (c) 2015 Taimur Ayaz

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.