Touch

Angular Bootstrap 5 Touch

This component allows you to improve the user experience on mobile touch screens by calling methods on the following custom events: pinch, swipe, tap, press, pan and rotate.

Note: Read the API tab to find all available options and advanced customization

Note: This method is intended only for users of mobile touch screens, so it won't work for the mouse or keyboard events.

Configuration

Step 1

Install hammerjs package.

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Step 2

Add HammerModule to your module imports.

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Step 3

Create HammerConfig and add it to the module providers.

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Press

Press calls the chosen method when the touch event on the element lasts longer than 250 milliseconds.

Hold the button to remove the mask from the image

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Press duration

To change default press duration, override the press time value in HammerConfig

Hold the button for 5s to remove mask from the image

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Tap

The callback on tap event is called with an object containing origin field - the x and y coordinates of the user's touch.

Tap button to change a color

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Double Tap

Set default taps to touch event.

Change background color with 2 taps

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Pan

The pan event is useful for dragging elements - every time the user moves a finger on the element to which the directive is attached to, the given method is being called with an argument consisting of two keys: x and y (the values corresponds to the horizontal and vertical translation).

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Pan Left

Pan with only left direction

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Pan Right

Pan with only right direction

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Pan Up/Down

Pan with only up/down direction

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Pinch

The pinch event calls the given method with an object containing two keys - ratio and origin. The first one it the ratio of the distance between user's fingers on touchend to the same distance on touchstart - it's particularly useful for scaling images. The second one, similarly as in doubleTap event, is a pair of coordinates indicating the middle point between the user's fingers.

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Swipe Left/Right

The swipe event comes with several modifiers (left, right, up, down) - each of them will ensure that event will fire only on swipe in that particular direction. If the directive is used without any modifier, the callback method will be called each time the swiping occurs, and the string indicating the direction will be passed as an argument.

This example shows example with left and right

Swipe Left-Right to change a color

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Swipe Up/Down

In order to use (swipeup) and (swipedown) events, you need to enable all swipe directions in the HammerConfig.

Swipe Up-Down to change a color

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Rotate

This example shows example with rotate

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