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CPC View Documentation
USER'S GUIDE

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.

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

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.

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.

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.

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.

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.

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.

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 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

• All: Select this option to print all of the pages in the current document.
• Pages: Select this option to print a consecutive range of pages from the current document. Once selected, enter the starting page number of the range in the "from" box and enter the ending page number of the range in the "to" box. If the current document contains only one page, this option is disabled.
• Current view: Select this option to print only the portion of the page image that is currently in view on screen in the CPC View window. Scaling of this portion of the image is governed by the scaling options described below. (Typically, you will want to use "Match printer page size" when printing "Current view".) If the entire page is currently visible in the image window, this option is disabled.

Auto-scale

• Disable:When the "Disable" option is selected, no scaling on the image is done. A pixel in the image is printed as a pixel on the printer at the printer's resolution. The printed result depends on the resolution of the printer.
• Match printer page size:When the "Match printer page size" option is selected, image resolution information is ignored, and the pages of the document are scaled so as to fill the printer page. This is useful, for instance, when printing images that at full image resolution are too large to fit on the page (such as A4 images) or to blow up small images to full page size.
• Match printer resolution: When the "Match printer resolution" option is selected, CPC View matches the image resolution of the document (if available) to the printer resolution so as to print the pages at the correct document image resolution. If the document images contain no resolution information, the "Default document resolution" is used instead. If you know the correct document resolution, you can reset the "Default document resolution" to that value so that printing will occur at the correct nominal resolution.

Options

• Automatic orientation: The "Automatic orientation" option causes CPC View to automatically select the print orientation (landscape or portrait mode) for each page that is printed.
• Quick print: The "Quick print" option prints a lower quality version of the image (at half resolution), but works much faster on slow printer connections.
• Use screen colors: By default, CPC View prints black foreground on white background. If the "Use screen colors" box is checked, CPC View will instead use the foreground and background colors that have been set for screen viewing. This allows, for instance, printing the image with black and white inverted. It also allows for color effects on color printers. [No longer supported in version 4.2 and later.]
• Invert image colors: By default, CPC View prints black foreground on white background. If the "Invert image colors" box is checked, CPC View will instead print white foreground on black background. [V4.2]

Inclusions

• Page Titles: If this option is checked, pages will be printed with a title bar at the top of each page giving the document name and URL and the page number and length of document. [V4.2]
• Annotations: If this option is checked, pages will be printed with annotations. Otherwise, pages will be printed without annotations. [V5]

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

• Access current documentation on CPC View with the "Help..." menu item, which will open up a new browser window with the on-line documentation for CPC View.
• Find out about your version of CPC View, including the license that you are working under, with the "About CPC View..." menu item.

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

• Get information about how to purchase your copy of CPC View and get a registration key, with the "Registration Info..." menu item.
• Enter your registration key to fully license your copy of CPC View with the "Enter Registration Key..." menu item.

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.

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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