The Source code viewer plugin (see figure sourceplugin) displays the source code of the selected call tree item. The file is opened in read-only mode per default. If you wish to edit the text, please uncheck the Read only box in the plugin menu. The menu item "Set external editor" allows to open the source file with an external editor.

"sourceplugin": Source code viewer plugin

If CUBE doesn't find the file at its original location, a button to open a file dialog is displayed. The new location of the source files is saved in the global settings.

The context menu (right mouse button) shows following options:

Copy copies the selection to the clipboard
Select All selects the whole source file
Find adds an additional widget at the bottom ot the viewer to search inside the source code
Open in external editor opens an external editor, after it is configured

General options can be set in the plugin menu (Plugins->SourceCodeViewer).

Set font Change the default viewer font
Read only The default viewer mode is read only. You can enable editing here.
Set external editor This options allows to select one of the predefined external editors or define a new one.

Source Code Viewer Keyboard control

Control in read only mode:

Up Arrow	Move one line up
Down Arrow	Move one line down
Left Arrow	Scroll one character to the left (if horizontally scrollable)
Right Arrow	Scroll one character to the right (if horizontally scrollable)
Page Up	Move one (viewport) page up
PageDown	Move one (viewport) page down
Home	Move to the beginning of the text
End	Move to the end of the text
< scroll mouse-wheel >	Scroll the page vertically
Alt+< scroll mouse-wheel >	Scroll the page horizontally (if horizontally scrollable)
Ctrl+F	Find text
Ctrl+< scroll mouse-wheel >	Zoom the text
Ctrl+A	Select all text

Additionally for the read and write mode:

Left Arrow	Move one character to the left
Right Arrow	Move one character to the right
Backspace	Delete the character to the left of the cursor
Delete	Delete the character to the right of the cursor
Ctrl+C	Copy the selected text to the clipboard
Ctrl+Insert	Copy the selected text to the clipboard
Ctrl+K	Delete to the end of the line
Ctrl+V	Paste the clipboard text into text edit
Shift+Insert	Paste the clipboard text into text edit
Ctrl+X	Delete the selected text and copy it to the clipboard
Shift+Delete	Delete the selected text and copy it to the clipboard
Ctrl+Z	Undo the last operation
Ctrl+Y	Redo the last operation
Ctrl+Left arrow	Move the cursor one word to the left
Ctrl+Right arrow	Move the cursor one word to the right
Ctrl+Home	Move the cursor to the beginning of the text
Ctrl+End	Move the cursor to the end of the text
Hold Shift + some movement (e.g., Right arrow)	Select region