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Zooming and navigating

Kwave provides several ways to zoom and navigate, using keyboard shortcuts, menu commands, toolbar buttons and by using the mouse. The following sections should give an overview on how to use all of these functions.

Zooming in and out

  • zoom in: zooms in to see more details, magnifies by factor 3.

    • menu entry / keyboard shortcut: View → Zoom In (Ctrl++)

    • toolbar button: “zoom in”

  • zoom out: zooms in to see less details, shrinks by factor 3.

    • menu entry / keyboard shortcut: View → Zoom Out (Ctrl+-)

    • toolbar button: “zoom out”

  • zoom selection: zooms to a factor where the current selection is completely visible in the current view.

    • menu entry / keyboard shortcut: View → Zoom to Selection (Ctrl+Space)

    • toolbar button: “zoom to selection”

  • zoom to whole signal: selects a zoom factor that makes the whole signal visible in the current window.

    • menu entry: View → Zoom to whole signal

    • toolbar button: “zoom all”

  • zoom to 100%: zooms in up to a scale where one sample is represented by one pixel on the screen.

    • menu entry: View → Zoom to 100%

    • toolbar button: “zoom to 100%”

  • select predefined zoom: select a zoom factor from the zoom combo box in the toolbar.

Scrolling left and right

  • goto position: opens a dialog to enter the position where you want scrolls the current view.

    menu entry / keyboard shortcut: View → Go to Position... (Ctrl+G)

  • to begin: scrolls the current view so that it starts at the beginning of the signal.

    menu entry / keyboard shortcut: View → Begin (Ctrl+Home)

  • to end: scrolls the current view so that it ends at the end of the signal.

    menu entry / keyboard shortcut: View → End (Ctrl+End)

  • previous page: scrolls to the position right before the current view (left).

    menu entry / keyboard shortcut: View → Previous Page (PgUp)

    toolbar button: “previous page”

  • next page: scrolls to the position right after the current view (right).

    menu entry / keyboard shortcut: View → Next Page (PgDn)

    toolbar button: “next page”

  • scroll right: scrolls to the end of the signal by 1/3 of the current view.

    menu entry / keyboard shortcut: View → Scroll right (Right)

    toolbar button: “scroll right”

  • scroll left: scrolls to the start of the signal by 1/3 of the current view.

    menu entry / keyboard shortcut: View → Scroll left (Left)

    toolbar button: “scroll left”

Using the overview

The main screen of Kwave shows a small overview of the whole signal above the horizontal scroll bar of the main window. This overview also provides some functionality for navigating:

  • single click with left mouse button: directly move the current view to the clicked position.

  • double click with left mouse button: directly move the current view to the clicked position and additionally zoom in.

  • double click with left mouse button, with Shift pressed: directly move the current view to the clicked position and additionally zoom out.

Vertical zoom

You can zoom the current view vertically by pressing the Alt key and scrolling with the mouse wheel.