Visualization Settings

Visualization settings include all properties that have something to do in a broader sense how program Image Viewer handles displayed pictures. These settings include, beside others, all zooming related values and how pictures are interpolated as well. The definition of a text that is shown if not picture can be displayed is part of this settings group too.

Panel of visualization program settings.

As shown in figure above the visualization settings are split into the groups Appearance and Zoom factor. Each parameter of those groups should be discussed right now.

Appearance

This group includes, beside a component to provide an error text, a component to define the border width as well as an additional checkbox. See following overview about all relevant details.

Error text

This edit box allows users to define the text to display whenever showing a picture is impossible. For example this would be the case either if a picture is actually not selected in the navigator or if loading a picture has failed. Showing an error text can be suppressed too. In this case just leave the control empty. The default error text is set to Nothing to display….

Border width

This control allows users to setup the width of a border that has to be kept around a shown picture. This boarder width has to be provides as number of pixels and can be in a range of 0 up to 100. The default value is 10 pixels.

Interpolation

This checkbox enables users to define whether a shown picture is painted smoothly or not. Smooth painting means here that all pixels are displayed blurry as soon as picture highly magnified. This gives a better overall impression of the whole picture. If in turn interpolation is deactivated then all pixels are shown “sharply”. However, interpolation mode is always disabled if a zoom factor of 100% is used. This has been done to ensure a better program performance. Otherwise changing the size of the program’s main window would cause flickering. The interpolation mode is enabled by default.

Zoom factor

This group only provides controls to input number values. Further, all values only apply to the behavior how program Image Viewer handles zooming. These settings should be discussed right now.

Default

This control allows users to define the value to be used whenever program Image Viewer needs to apply the default zoom factor. For example this would be the case as soon as shortcut CTRL+0 is used to restore a picture’s default size. The default zoom factor has to be provided as percentage and can be in a range of 1 and 32,000. Furthermore, this value depends on the minimum and maximum zoom factor and must be within these limitations. The default value of this property is set to 100%.

Minimum

This control enables users to define the minimum allowed zoom factor. The minimum zoom factor has to be provided as percentage too and can be in a range of 1 and 32,000 as well. Furthermore, this value depends on the maximum zoom factor and must always be less than that value. The default value of this property is 10%.

Maximum

This control enables users to define the maximum allowed zoom factor. The maximum zoom factor has to be provided as percentage as well. The allowed value range of 1 up to 32,000 applies here too. Furthermore, this value depends on the minimum zoom factor and must always be greater than that value. The default value of this property is 6,400%.

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