3.4 Modifier Keys

Modifier keys are combinations of a keyboard key and a mouse key that are used to generate pop-up menus or to perform interactions. Generally a keyboard key is kept pressed and during this pressing, a mouse key is clicked (e.g. to get a pop-up menu) or kept pressed (e.g. zooming).

A list of available modifier keys with conditions and actions:

Table 3.5. Modifier keys and actions

Modifier KeyConditionAction
left-press onlyin canvas pad (see 3.2.1 Canvas Pads) Zoom with respect to the central point (horizontal zoom in the φ/ρ projection (see 5.5 φ/ρ Projection))
left-press onlyin canvas pad (see 3.2.1 Canvas Pads), 3DBox projection active (see 5.10 3DBox Projection) Change the volume of the box
right-click onlyin canvas pad (see 3.2.1 Canvas Pads) Interaction pop-up menu (see 3.3.3 Interaction Menus): interaction dependent operations (e.g. type of rubberband)
A + left-clickin canvas pad (see 3.2.1 Canvas Pads), pick interaction active (see 4.3 Pick) Add the data item to be picked to the currently selected list node
C + left-clickin canvas pad (see 3.2.1 Canvas Pads), pick interaction active (see 4.3 Pick) Clear the highlight list node
C + left-clickin canvas pad (see 3.2.1 Canvas Pads) Change position of central point
F + left-pressin canvas pad (see 3.2.1 Canvas Pads) Fast zoom with respect to the central point (horizontal zoom in the φ/ρ projection (see 5.5 φ/ρ Projection)); data are not shown during the zoom
H + left-clickin canvas pad (see 3.2.1 Canvas Pads), pick interaction active (see 4.3 Pick) Highlight, place the data item to be picked in the highlight list node, causing it to be drawn in white
H + left-pressin canvas pad (see 3.2.1 Canvas Pads) Horizontal zoom with respect to the central point
H + left-pressin canvas pad (see 3.2.1 Canvas Pads), 3DBox projection active (see 5.10 3DBox Projection) Change the length of the box
I + right-clickin canvas pad (see 3.2.1 Canvas Pads) Interaction list pop-up menu (see 3.3.3 Interaction Menus): list with available interactions
M + left-pressin canvas pad (see 3.2.1 Canvas Pads) Move (panning)
P + right-clickin canvas pad (see 3.2.1 Canvas Pads) Projection pop-up menu (see 3.3.2 Projection Menus); projection dependent (e.g. restore aspect ratio)
P + left-pressin canvas pad (see 3.2.1 Canvas Pads), synchro cursors active (see 4.4 Synchro Cursors) Change splitting angle φ and copy it to ρ/Z projection
R + left-pressin canvas pad (see 3.2.1 Canvas Pads) Rotate (projection dependent)
R + left-pressin canvas pad (see 3.2.1 Canvas Pads), 3DBox projection active (see 5.10 3DBox Projection) Rotate the tracks around the direction of flight of the decaying particle
V + left-pressin canvas pad (see 3.2.1 Canvas Pads) Vertical zoom with respect to the central point
V + left-pressin canvas pad (see 3.2.1 Canvas Pads), 3DBox projection active (see 5.10 3DBox Projection) Change the width of the box
W + right-clickin canvas pad (see 3.2.1 Canvas Pads) Canvas pad pop-up menu (see 3.3.1 Canvas Pad Menu): restore canvas pad defaults, rotation, flipping, etc.
Z + left-pressin canvas pad (see 3.2.1 Canvas Pads) Zoom with respect to the central point (horizontal zoom in the φ/ρ projection (see 5.5 φ/ρ Projection))
Z + left-pressin canvas pad (see 3.2.1 Canvas Pads), 3DBox projection active (see 5.10 3DBox Projection) Change the volume of the box