Chapter 15. Keyboard and mouse shortcuts
Scream has lots of keyboard and mouse shortcuts which can be used to make routine tasks faster and easier. The most useful ones are listed in the sections below.
15.1 The Main Window
15.1.1 Menu items
A number of menu options from the Main Window have equivalent keyboard shortcuts:
| Select all streams |
| Open the ViewInfo window |
| Open the Network Control window |
| Open the Setup window |
| Open the Summary window |
| Open a new, empty WaveView window |
15.1.2 The source tree
When an entry in the left-hand pane (the source tree) is selected, you can navigate with the arrow keys:
| Move to the previous entry |
| Move to the next entry |
| “Roll up” the current entry |
| “Unroll” the current entry |
Other shortcuts in the source tree include:
or
| Expand all "rolled up" sub-trees |
or
| "Roll up" all sub-trees |
| Remove the currently selected entry (if not
Note: Deleting an active source when recording is enabled has the side-effect of flushing any buffered data to disk. The source will reappear as soon as the next packet is received. |
| Variable - see below: |
: The function of the Enter key changes, depending on the type of item that is selected in the source tree:
| equivalent to picking Replay files… from the File menu (see section 11.2) |
| no action |
| open the Network Control window (see section 4.3) |
| directs a web browser to open the address of the PC, NAM or EAM. |
| open a terminal session to an attached digitiser (see section 8.1) |
| opens the Control window (see chapter 10 on page 121) |
: If the stream list has too many entries to fit into the pane, the pane contents can be scrolled using the mouse wheel.
15.1.3 The stream list
If the right-hand pane (the streams list) is selected, the keys perform the following actions:
| Move to the previous stream. |
| Move to the next stream. |
| Extend the selection to the previous stream |
| Extend the selection to the next stream |
| Open a new WaveView window on the currently-selected streams. |
| Remove the currently-selected streams, and clear their data from the stream buffer.
Note: Deleting an active stream when recording is enabled has the side-effect of flushing any buffered data to disk. The stream will reappear as soon as the next packet is received. |
: If the source tree has too many entries to fit into the pane, the pane contents can be scrolled using the mouse wheel.
15.2 WaveView windows
Most of the functions of WaveView windows can be accessed by a keystroke, a mouse movement or the combination of the two. This is particularly useful if you have removed the window decoration with the No Caption menu option.
15.2.1 Shortcuts for all streams
| Increase the amplitude scale (zoom in vertically) |
| Decrease the amplitude scale (zoom out vertically) |
| “Roll up” the current entry |
| “Unroll” the current entry |
or | Increase the time scale (zoom in horizontally) |
or | Decrease the time scale (zoom out horizontally) |
| Set all scales to unity (i.e. display all amplitudes in counts) |
| Enter or leave "pause" mode (stop or start scrolling) |
| Scroll forwards in time when in pause mode |
| Scroll backwards in time when in pause mode |
| Create a duplicate window as an exact copy of the current WaveView window, with all settings the same |
| Toggle the filter on or off |
| Open the Filter Design window - see section 6.3 |
| Null the offsets of all unlocked streams in the WaveView window, so that the mean value of each is centred vertically in its respective lane |
| Toggle the spectrogram of all streams on or off |
| Increase the colour brightness of all spectrograms |
| Decrease the colour brightness of all spectrograms |
| Toggle the display of "lane lines" on or off |
| Toggle “overlay mode” on or off. In “overlay mode” all streams are drawn in the centre of the window, rather than having separate lanes. See also the following two entries |
| Restore standard axis spacing (see section 6.1.8). If standard spacing is already in force, this will recompute the display cache and redraw the contents of the WaveView window, cancelling any selection |
| Overlay streams |
| Space stream axes according to the instrument's depth. The calvals must contain a depth= entry for every stream in the window |
| If calvals contains position entries for every stream in the current window, this key will space the stream axes according to the distance from a set point, specified using… |
| Specify a set point for axes spacing |
| Toggle “no caption” on or off |
| Remove all streams from the WaveView window |
| Sets the offsets all streams to zero. This may make some or all traces move vertically outside of their lanes or even outside of the WaveView window. |
15.2.2 Shortcuts for the selected stream
There are also shortcuts which affect only the stream containing the mouse pointer. These are equivalent to the stream actions on the context-sensitive menu.
| Remove the active stream from the WaveView window |
| Display the Colour selection dialogue box for the active stream |
| Toggles on or off the Details window for the active stream |
| Null the offset of the active stream in the WaveView window, so that the mean value is centred vertically in its lane |
| Scale the active stream |
| Scale all other streams to have the same (visual) peak-to-peak amplitude as the active stream |
| Sets the scale to unity (i.e. display the amplitude in counts) |
| Sets the offset of the current stream to zero. This may make the trace move vertically outside of its lane or even outside of the WaveView window |
| Toggle on or off the spectrogram display for the active stream |
| Increase the colour brightness of the active stream's spectrogram |
| Decrease the colour brightness of the active stream's spectrogram |
15.3 Details window
The following shortcuts are active when the Details window has focus.
| Increase the stream's offset by one pixel (regardless of any scaling on the stream) |
| Decrease the stream's offset by one pixel |
| Increase the stream's offset by the width of one lane |
| Decrease the stream's offset by the width of one lane |
| Null the offset of the associated stream, so that the mean value is centred vertically in its lane |
