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CPC View Documentation
USER'S GUIDE

CPC View implements a viewer for documents in a variety of document image formats including TIFF format and Cartesian's own CPC format. CPC View is a web browser plug-in that runs under all 32-bit versions of Windows and is compatible with Netscape Navigator 3.0 or later, Netscape Communicator, Microsoft Internet Explorer 3.0 through 5.0, and other applications supporting the plugin API. Users of Internet Explorer 5.5 and later should install CPC View ax, the ActiveX control version of the viewer.

Once the viewer is installed, documents in any of these formats are displayed within the browser along with a set of controls that allow navigation through and scaling of the image.

In the documentation below, advanced topics are described in this smaller font size.


Supported Formats

CPC View supports images with up to 32,767 pixels in either dimension. Documents in the following formats are supported:

Format Mime type Typical extensions As of version
CPC image/cpi .cpi, .cpc 1.0
TIFF image/tiff .tiff, .tif b/w 1.0; color/gray 4.3.0
Portable Bitmap image/pbm .pbm, .pgm, .ppm, .pnm 1.0
JEDMICS C4 image/c4 .c4, .ct4 4.3.0
CALS image/cals .cals, .cal 4.3.0
JFAX documents application/tiff .jfx, .jfax 4.3.0


Views

Documents may be viewed in a page view in which only a single page is shown at a time or a thumbnail view in which all pages are shown as small thumbnails.

By default, the document is brought up in page view. You can move to the thumbnail view by selecting the right "thumbnail" button in the "View" control or double-clicking on the image. You can return to page view from thumbnail view by selecting the left "page" button in the "View" control or double-clicking on the thumbnail representing the page to move to.

The view selection functionality is also available through a menu on the right mouse button within the viewer. This menu item also has a "View Properties..." option that displays any properties of the document, such as resolution, image size, and document source that may be stored with the image.


Navigating Among Pages

In addition to selecting pages in the thumbnail view, you can navigate among pages in a multi-page document using the "Page" control. The left and right arrow buttons within the control move backward and forward one page, respectively. The current page number is always shown in the text box in the "Page" control. Clicking on this number pops-up a menu of all page numbers, from which a new page can be selected.

The page selection functionality is also available through a menu on the right mouse button within the viewer.


Scrolling Pages

Often pages of the document will be larger than the viewer's window. In such cases, the scroll bars at right and bottom can be used to scroll around in the page image. In general, all scaling and scrolling changes persist as you move from page to page.

The "Mouse" control, pictured at left, determines the current mode that the viewer is in. By default, the viewer is in "scroll" mode, as indicated by the hand button being depressed. (The magnifying glass button puts the viewer in "zoom" mode; the pencil button puts the viewer in "annotation" mode.) When in scroll mode, the mouse can be used to "grab" a point on the image and drag it around on the screen.

In addition, the "Scrollpad" control, which looks like a yellow rectangle on a white page background, can be used for scrolling. The yellow rectangle depicts the position of the viewer window on the page image. By dragging the yellow rectangle around, the viewer window can be moved over the page.


Scaling Pages and Thumbnails

The "Zoom" control allows scaling of the pages in both page and thumbnail view. In general, all scaling and scrolling changes persist as you move from page to page.

The scaling functionality is also available through a menu on the right mouse button within the viewer.

Scaling in Page View

In page view, the up and down arrows double and halve the scale respectively. The current scale is shown as a percentage of full resolution in the text box in the "Zoom" control. Clicking on this number pops-up a menu of scale factors, from which a new scale can be selected.

The horizontal double arrow and vertical double arrow buttons force a scale factor that fits the current page to fit within the width or height, respectively, of the viewer window.

Scaling in Thumbnail View

In thumbnail view, the up and down arrows increase or decrease the number of images per row or column by one. The current scale is shown as a percentage of full resolution. Clicking on this number pops-up a menu from which a new number of thumbnails per row or column may be selected.

If the horizontal double arrow button is selected, the arrows and current scale pop-up govern the number of images per row. If the vertical double arrow button is selected, the arrows and current scale govern the number of images per column.

Zooming

Zooming in on a particular region can also be done by dragging the region when in "zoom" mode. The magnifying glass button in the "Mouse" control puts the viewer into zoom mode. (The hand button returns the viewer to "scroll" mode; the pencil button puts the viewer in "annotation" mode.) When in "zoom" mode, you can drag the left-mouse button to select the region to zoom to. When you release the left mouse button, the selected region will be scaled to fill the window. This works in both page view and thumbnail view. (If you are in thumbnail view, the viewer will switch to page view when you release the mouse button.)

The zoom operation may be cancelled by clicking on the right mouse button prior to releasing the left mouse button, which switches back to "scroll" mode. There is also an "Undo last zoom" operation available from the right mouse button, which allows undoing the sequence of zoom operations that have been executed since the document was opened.

Scaling factors for the fit-to-width options and so forth are generally chosen to maximize image quality, rather than exactly fill the screen. Selecting "Enable Precision Zoom" option from the right mouse menu causes the viewer to allow scalings that exactly fill the screen, at some cost in image quality and rendering speed. This option is generally not recommended but is incorporated for special applications.


Setting Foreground and Background Colors

You can set the foreground and background colors used when rendering pages using the "Color" control. The control has two buttons that show the current color choices for foreground (default black) and background (default white). Clicking on either button brings up a color selection dialog box that allows you to choose alternative colors. Clicking on the arrow line below the two buttons causes the foreground and background colors to be swapped, inverting the colors of the image. Clicking again swaps them back.

By default, the "Color" control is not provided in the toolbar. You can add it to the toolbar using the toolbar configuration methods described below.


Rotating Pages

Page images can be rotated at 90-degree increments using the "Rotation" control. The control shows four faces representing the four 90-degree rotations available. Clicking on each causes all page images in the current document to be displayed at that rotation.


Additional Toolbar Information

The title bar, which takes up the remaining space in the toolbar of controls, often provides information on the status of the document. A pie chart indicates progress in decompressing images in preparation for viewing. A moving pencil indicates that the page is still being rendered on the screen. The name of the document is also displayed in this area.


Configuring the Toolbar

You can completely configure which controls appear in the toolbar and in what order. Clicking the right mouse button in the toolbar brings up a "Configure Controls" dialog box that allows you to select which controls you want to appear in the toolbar and where the toolbar should be located. Check off the boxes that you want to appear in the toolbar. The toolbar reflects your selections immediately. To restore the toolbar to its initial state when the software was installed, click on "Restore Factory Settings".

To change the default location of the toolbar, click on one of the bottom buttons in the "Configure Controls" dialog box. By default, the toolbar is at the top, but you can select left, right, or bottom as well.

You can get rid of the toolbar completely by selecting the option "none" from the "Toolbar" submenu of the right mouse menu.

To change the order in which the various controls appear in the toolbar, you can drag the controls around with the left mouse button by mousing down on a point in the control that is not otherwise mouse-sensitive. (The mini-title-bar of the control is a natural place to use.) Alternatively, you can hold down the "Alt" key and mouse down anywhere in the control to drag the control. (Prior to Version 4.2 of CPC View, dragging controls required use of the "Alt" key.) The controls snap into place as you drag them past other controls. The figure at right shows the screen as the user is moving the "Rotation" control to the right.

All configuration changes are preserved so that the next time you run the viewer, the toolbar will be set up just the way you like it.


Printing Documents

Printing documents from CPC View works much like in other applications. To print a document displayed by CPC View, choose "Print..." or "Print Frame..." (as appropriate) from the browser's "File" menu to bring up the dialog box depicted at right. (Click on the figure at right for a full-size version.) You can also use the "Print..." item from the right mouse menu.

Use the dialog box to select the printer and other options. Standard print options allow selection of: the printer, the range of pages to print, the number of copies to print and collation preferences. Several additional options, special to CPC View, are described in more detail below. Once the appropriate options are selected, click the "Print" button to initiate printing.

Because of limitations in Microsoft Internet Explorer, CPC View (and other plugins) cannot support printing from Internet Explorer's toolbar or "File" menu. When running under Internet Explorer, you must use the right-mouse menu to initiate printing.


Print range

The Print range options select the range of pages to print:

Auto-scale

The Auto-scale options determine the scaling of the pages when printed to the printer. (Note that the current zoom magnification on the screen does not affect the print scaling, except when using "Print current view".)

Options

This group of controls enables various printing features.

Inclusions

This group of controls enables various additional items that are printed on the page along with the image.


Operating Without the Toolbar

All the functionality above can be accessed without using the toolbar. Instead, use the right mouse menu (pictured at left), which can be brought up by clicking the right mouse button in the page image area of the viewer. The different sections of the menu provide the same functionality as the "Page" control, the "Zoom" control, and the "View", "Rotation", "Color", Toolbar location, and Mouse controls. The "Document" section of the menu contains commands to save the current document to a file (optionally converting it to a different file format) and to print the current document.

In addition, you can


 

Finally, if you are still evaluating the software and have not yet licensed it, two further menu items appear. These allow you to


Interacting with the Windows Clipboard

To copy the current view of the image to the Windows clipboard, select the Copy to Clipboard command from the View sub-menu of the right mouse menu. The image is copied to the clipboard exactly as it appears on the screen. If the image is scaled such that only a portion of the image is visible in the window, only that portion of the image is copied to the clipboard.

The command is available in both page view and thumbnail view. In thumbnail view, it copies the currently visible thumbnails to the clipboard.

The copy function can also be activated by typing 'c' while the image window has keyboard focus.


Keyboard Shortcuts

Keyboard shortcuts allow you to initiate viewer commands directly from the keyboard. Shortcuts are accessible whenever the viewer window has keyboard focus. The following shortcuts are available:
Key Description
p Print the document
s Save the document
Z Zoom in (increase the display magnification).
z Zoom out (decrease the display magnification).
g Goto page.
Space Display the next page
Backspace Display the previous page
c Copy the current view of the document to the Windows clipboard
 
Page Up Scroll up one screen
Page Down Scroll down one screen
Home Scroll to the top of the page
End Scroll to the bottom of the page
Left Arrow Scroll left one screen
Right Arrow Scroll right one screen


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