Keyboard Shortcuts

The following table lists the keyboard shortcuts supported in DsPdfViewer that will help in performing a variety of supported operations more efficiently and make the DsPdfViewer components more accessible:

Shortcut Key	Key Code	Action	Action Description
Ctrl + "Numpad +"	107	zoomin	Zoom in.
Ctrl + "+"	187	zoomin	Zoom in.
Ctrl + "Numpad -"	109	zoomout	Zoom out.
Ctrl + "-"	189	zoomout	Zoom out.
Ctrl + 0	48	zoom_pagesize	Zoom to 100%.
Ctrl + 9	57	zoom_clientsize	Zoom to page width.
Ctrl + A	65	select_all	Select all text.
R	82	rotate	Rotate clockwise.
Shift + R	82	rotate	Rotate counterclockwise.
H	72	pan	Enable the pan tool.
S	83	selection	Enable the text selection tool.
Spacebar	32	holdToPan	Press and hold the Spacebar to temporarily enable the pan.
Ctrl + O	79	open	Open file from the local system.
Ctrl + F	70	search	Open the search panel.
Ctrl + P	80	print	Print document.
Left Arrow	37	move_caret_left	Move the caret (text cursor) left.
Up Arrow	38	move_caret_up	Move the caret up.
Down Arrow	40	move_caret_down	Move the caret down.
Right Arrow	39	move_caret_right	Move the caret right.
Home	36	move_caret_sequence_start	Move the caret to the start of the sequence.
Ctrl + Home	36	move_caret_document_start	Move the caret to the start of the document.
End	35	move_caret_sequence_end	Move the caret to the end of the sequence.
Ctrl + End	35	move_caret_document_end	Move the caret to the end of the document.
Ctrl + Enter	13	confirm-ok	Confirm changes.
ESC	27	confirm-cancel	Cancel changes
Page Up	33	scrollUp	Scroll up.
Page Down	34	scrollDown	Scroll down.

Customize Keyboard Shortcuts

DsPdfViewer also supports redefining, disabling, overriding, and removing the default keyboard shortcuts, as well as binding the default keyboard shortcuts to other keys and creating custom keyboard shortcuts via API using shortcuts option of ViewerOptions class.

Bind Keyboard Shortcuts

DsPdfViewer supports binding any tool to any keyboard shortcut key. The following are the available built-in tools accessible through keyboard shortcut keys:

Keyboard Shortcut Tools
zoomin	move_caret_left
zoomout	move_caret_up
zoom_pagesize	move_caret_down
zoom_clientsize	move_caret_right
select_all	move_caret_sequence_start
rotate	move_caret_document_start
pan	move_caret_sequence_end
selection	move_caret_document_end
holdToPan	confirm-ok
open	confirm-cancel
search	scrollUp
print	scrollDown

Refer to the following example code to bind the holdToPan action to “P” key:

// Bind the "P" shortcut to the holdToPan action and leave the Ctrl+P shortcut for the "print" action.
viewer.options.shortcuts["P"] = [{ ctrl: true, tool: "print" }, { tool: "holdToPan" }];

Disable Keyboard Shortcuts

Refer to the following example code to disable holdToPan keyboard shortcut:

/* Initialize DsPdfViewer and
 set the function(event) for both keys to null. */
var viewer = new DsPdfViewer("#viewer", {

    shortcuts: {

        "Z": {
ctrl: true,
            tool: function(event) { }
},
        "Y": {
ctrl: true,
            tool: function(event) { }
}
    }
});

// Disable holdToPan shortcut.
viewer.options.shortcuts["32"] = () => { };

Remove Default Keyboard Shortcuts

Refer to the following example code to remove all default keyboard shortcuts:

// Initialize DsPdfViewer and set the shortcuts to null.
var viewer = new DsPdfViewer("#root");
viewer.options.shortcuts = { };

Override Keyboard Shortcuts

Refer to the following example code to override Ctrl + “Numpad +“ keyboard shortcut:

/* Initialize DsPdfViewer and
 set the function(event) to zoom the PDF page to 10%. */
var viewer = new DsPdfViewer("#root", { 
  shortcuts: {
    107: {
ctrl: true,
      tool: function(event) {
        DsPdfViewer.findControl("#root").zoomValue += 10;
          event.preventDefault();
    }
}
  }
});

Create Custom Keyboard Shortcuts

Refer to the following example code to create a custom keyboard shortcut:

/* Create a custom keyboard shortcut to
 alert the user that Ctrl+Alt+E is pressed. */
viewer.options.shortcuts["E"] = {
ctrl: true,
  alt: true,
  tool: function(e) { alert("Ctrl+Alt+E pressed."); }
};

Customize Keyboard Shortcuts
Bind Keyboard Shortcuts
Disable Keyboard Shortcuts
Remove Default Keyboard Shortcuts
Override Keyboard Shortcuts
Create Custom Keyboard Shortcuts