On "pointerdown", "pointerup", and "click" , this property indicates the device button whose state change caused the event to fire. -1: Neither buttons nor touch/pen contact changed since last event. 0: Left Mouse, Touch contact, Pen contact. 1: Middle Mouse. 2: Right Mouse, Pen barrel button. 3: X1 (back) Mouse 4: X2 (forward) Mouse 5: Pen eraser button
A number representing which buttons that are pressed on the mouse when a mouse event is triggered. Simultaneous buttons gives a combined value.
0: No button or un-initialized
1: Primary button (usually the left button)
2: Secondary button (usually the right button)
4: Auxiliary button (usually the mouse wheel button or middle button)
8: 4th button (typically the "Browser Back" button)
16 : 5th button (typically the "Browser Forward" button)
If this event's default action is cancelable. See respective engine event for its definition of default action.
The x coordinate in the application's client area.
The y coordinate in the application's client area.
Indicates whether the ctrl key was pressed or not
If this event's default action has been canceled/prevented by a call to preventDefault()
True if stopImmediatePropagation() was called on this event.
Indicates whether or not the pointer device that created the event is the primary pointer. For more information, see: https://developer.mozilla.org/en-US/docs/Web/API/PointerEvent/isPrimary
If this event runs in a "trusted" context, i.e. the event callback is executed during a user-generated event such as "click" or "pointerdown".
If the event was related to a media resource in the publication such as an image, audio or video resource. It contains additional information about the media resource and methods to access media content.
Indicates whether the meta key was pressed or not
The x coordinate relative the left edge of the application document. This includes any portion of the document not currently visible.
The y coordinate relative the top edge of the application document. This includes any portion of the document not currently visible.
An identifier assigned to a given pointer event. The identifier is unique, being different from the identifiers of all other active pointer events.
Indicates the device type (mouse, pen, or touch) that caused a given pointer event.
True if stopPropagation() was called on this event.
Describes how the reader document acted on the event.
The ReaderView instance this event is related to.
The client X coordinate relative to the window width. Typically a number between 0 and 1.
The client Y coordinate relative to the window height. Typically a number between 0 and 1.
The global screen X coordinate relative to the screen width. Typically a number between 0 and 1.
The global screen Y coordinate relative to the screen height. Typically a number between 0 and 1.
The x coordinate in global screen coordinates.
The y coordinate in global screen coordinates.
Contains additional information about the original event target, such as the targeted node in the reader document.
The type of event.
If the event was emitted due to a user generated event.
Note that if this value is true, the engine event listener might still be called in an untrusted execution context due to proxying through iframes, etc. Use isTrusted() to verify if the current execution context is trusted.
If true, a native DOM event with the same type as this engine event will also be fired in your app.
If you are also listening on the corresponding DOM event, use this value to ensure that you are not handling the same event twice.
For example, when performing a "click" inside an EPUB reader document, the DOM "click" event will not be visible to your app because the document is rendered in an iframe. However, a click on the edge of an EPUB reader document will generate a normal DOM "click" event AND also a Colibrio "click" engine event.
Prevent the event's default action. See the respective engine event for its definition of default action.
For this particular event, no other listener will be called. Neither those attached on the same object, nor those attached on the reading system which will be traversed later.
Stops the propagation of events further along in the Reading System. Listeners attached on the same object is still called.
Get this event as a plain JSON object.
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eventmust only be passed if it was emitted in the top frame.