PTPDFView

@interface PTPDFView : NSObject

PDFView is a utility class that can be used for interactive rendering of PDF documents.

In .NET environment PDFView is derived from System.Windows.Forms.Control and it can be used like a regular form (see PDFViewForm.cs in PDFView sample for C# for a concrete example).

PDFView implements some essential features such as double-buffering, multi-threaded rendering, scrolling, zooming, and page navigation that are essential in interactive rendering applications (e.g. in client PDF viewing and editing applications).

PDFView defines several coordinate spaces and it is important to understand their differences:

  • Page Space refers to the space in which a PDF page is defined. It is determined by a page itself and the origin is at the lower-left corner of the page. Note that Page Space is independent of how a page is viewed in PDFView and each page has its own Page space.

  • Canvas Space refers to the tightest axis-aligned bounding box of all the pages given the current page presentation mode in PDFView. For example, if the page presentation mode is e_single_continuous, all the pages are arranged vertically with one page in each row, and therefore the Canvas Space is rectangle with possibly large height value. For this reason, Canvas Space is also, like Page Space, independent of the zoom factor. Also note that since PDFView adds gaps between adjacent pages, the Canvas Space is larger than the space occupied by all the pages. The origin of the Canvas Space is located at the upper-left corner.

  • Screen Space (or Client Space) is the space occupied by PDFView and its origin is at the upper-left corner. Note that the virtual size of this space can extend beyond the visible region.

  • Scrollable Space is the virtual space within which PDFView can scroll. It is determined by the Canvas Space and the current zoom factor. Roughly speaking, the dimensions of the Scrollable Space is the dimensions of the Canvas Space timed by the zoom. Therefore, a large zoom factor will result in a larger Scrollable region given the same Canvas region. For this reason, Scrollable Space might also be referred to as Zoomed Canvas Space. Note that since PDFView adds gaps between pages in Canvas Space and these gaps are not scaled when rendered, the scrollable range is not exactly what the zoom factor times the Canvas range. For functions such as SetHScrollPos(), SetVScrollPos(), GetCanvasHeight(), and GetCanvasWidth(), it is the Scrollable Space that is involved.

Note

PDFView is available on all platforms supported by PDFNet.

PDFView is a utility class that can be used for interactive rendering of PDF documents.

In .NET environment PDFView is derived from System.Windows.Forms.Control and it can be used like a regular form (see PDFViewForm.cs in PDFView sample for C# for a concrete example).

PDFView implements some essential features such as double-buffering, multi-threaded rendering, scrolling, zooming, and page navigation that are essential in interactive rendering applications (e.g. in client PDF viewing and editing applications).

PDFView defines several coordinate spaces and it is important to understand their differences:

  • Page Space refers to the space in which a PDF page is defined. It is determined by a page itself and the origin is at the lower-left corner of the page. Note that Page Space is independent of how a page is viewed in PDFView and each page has its own Page space.

  • Canvas Space refers to the tightest axis-aligned bounding box of all the pages given the current page presentation mode in PDFView. For example, if the page presentation mode is e_single_continuous, all the pages are arranged vertically with one page in each row, and therefore the Canvas Space is rectangle with possibly large height value. For this reason, Canvas Space is also, like Page Space, independent of the zoom factor. Also note that since PDFView adds gaps between adjacent pages, the Canvas Space is larger than the space occupied by all the pages. The origin of the Canvas Space is located at the upper-left corner.

  • Screen Space (or Client Space) is the space occupied by PDFView and its origin is at the upper-left corner. Note that the virtual size of this space can extend beyond the visible region.

  • Scrollable Space is the virtual space within which PDFView can scroll. It is determined by the Canvas Space and the current zoom factor. Roughly speaking, the dimensions of the Scrollable Space is the dimensions of the Canvas Space timed by the zoom. Therefore, a large zoom factor will result in a larger Scrollable region given the same Canvas region. For this reason, Scrollable Space might also be referred to as Zoomed Canvas Space. Note that since PDFView adds gaps between pages in Canvas Space and these gaps are not scaled when rendered, the scrollable range is not exactly what the zoom factor times the Canvas range. For functions such as SetHScrollPos(), SetVScrollPos(), GetCanvasHeight(), and GetCanvasWidth(), it is the Scrollable Space that is involved.

Note

PDFView is available on all platforms supported by PDFNet.

  • PDFView constructor and destructor. Create PDFView without associating it to any document.

    Declaration

    Objective-C

    - (instancetype)init;

    Swift

    init!()
  • Associates this PDFView with a given PDF document.

    Associates this PDFView with a given PDF document.

    Declaration

    Objective-C

    - (void)SetDoc:(PTPDFDoc *)doc;

    Swift

    func setDoc(_ doc: PTPDFDoc!)

    Parameters

    doc

    - A document to be displayed in the view.

    doc

    - A document to be displayed in the view.

  • Associates this PDFView with a given document conversion. The conversion will be performed page-by-page, asynchronously. The pdview object will be updated to display the conversion result

    Associates this PDFView with a given document conversion. The conversion will be performed page-by-page, asynchronously. The pdview object will be updated to display the conversion result

    Declaration

    Objective-C

    - (void)OpenUniversalDoc:(PTDocumentConversion *)conversion;

    Swift

    func openUniversalDoc(_ conversion: PTDocumentConversion!)

    Parameters

    doc

    - A document to be displayed in the view.

    doc

    - A document to be displayed in the view.

  • Close the associated PDF document.

    Close the associated PDF document.

    Declaration

    Objective-C

    - (void)CloseDoc;

    Swift

    func closeDoc()
  • Declaration

    Objective-C

    - (PTPDFDoc *)GetDoc;

    Swift

    func getDoc() -> PTPDFDoc!

    Return Value

    Currently associated document with this PDFView.

  • Acquires a write lock on the currently open document, optionally canceling all threads accessing the document.

    Acquires a write lock on the currently open document, optionally canceling all threads accessing the document.

    Declaration

    Objective-C

    - (void)DocLock:(BOOL)cancel_threads;

    Swift

    func docLock(_ cancel_threads: Bool)
  • Releases the write lock from the currently open document.

    Releases the write lock from the currently open document.

    Declaration

    Objective-C

    - (void)DocUnlock;

    Swift

    func docUnlock()
  • Try acquiring a write lock on the currently open document, waiting no longer than specified number of milliseconds.

    Try acquiring a write lock on the currently open document, waiting no longer than specified number of milliseconds.

    Declaration

    Objective-C

    - (BOOL)DocTryLock:(int)milliseconds;

    Swift

    func docTryLock(_ milliseconds: Int32) -> Bool

    Return Value

    true if the document is locked for multi-threaded access, false otherwise.

  • Locks the currently open document to prevent competing write threads (using Lock()) from accessing the document at the same time. Other reader threads however, will be allowed to access the document. Threads attempting to obtain write access to the document will wait in suspended state until the thread that owns the lock calls doc.UnlockRead(). Note: To avoid deadlocks obtaining a write lock while holding a read lock is not permitted and will throw an exception. If this situation is encountered please either unlock the read lock before the write lock is obtained or acquire a write lock (rather than read lock) in the first place.

    Locks the currently open document to prevent competing write threads (using Lock()) from accessing the document at the same time. Other reader threads however, will be allowed to access the document. Threads attempting to obtain write access to the document will wait in suspended state until the thread that owns the lock calls doc.UnlockRead(). Note: To avoid deadlocks obtaining a write lock while holding a read lock is not permitted and will throw an exception. If this situation is encountered please either unlock the read lock before the write lock is obtained or acquire a write lock (rather than read lock) in the first place.

    Declaration

    Objective-C

    - (void)DocLockRead;

    Swift

    func docLockRead()
  • Releases the read lock from the currently open document.

    Releases the read lock from the currently open document.

    Declaration

    Objective-C

    - (void)DocUnlockRead;

    Swift

    func docUnlockRead()
  • Try acquiring a read lock on the current document, waiting no longer than specified number of milliseconds.

    Try acquiring a read lock on the current document, waiting no longer than specified number of milliseconds.

    Declaration

    Objective-C

    - (BOOL)DocTryLockRead:(int)milliseconds;

    Swift

    func docTryLockRead(_ milliseconds: Int32) -> Bool

    Return Value

    true if the document is locked for multi-threaded access, false otherwise.

  • Sets the current page presentation mode.

    Sets the current page presentation mode.

    Declaration

    Objective-C

    - (void)SetPagePresentationMode:(PTPagePresentationMode)mode;

    Swift

    func setPagePresentationMode(_ mode: PTPagePresentationMode)

    Parameters

    mode

    - the new page presentation mode. @default The default PagePresentationMode is e_single_continuous.

    mode

    - the new page presentation mode. @default The default PagePresentationMode is e_single_continuous.

  • Declaration

    Objective-C

    - (PTPagePresentationMode)GetPagePresentationMode;

    Swift

    func getPagePresentationMode() -> PTPagePresentationMode

    Return Value

    the current page presentation mode.

  • Set the color post processing transformation. This transform is applied to the rasterized bitmap as the final step in the rasterization process, and is applied directly to the resulting bitmap (disregarding any color space information). Color post processing only supported for RGBA output.

    Set the color post processing transformation. This transform is applied to the rasterized bitmap as the final step in the rasterization process, and is applied directly to the resulting bitmap (disregarding any color space information). Color post processing only supported for RGBA output.

    Declaration

    Objective-C

    - (void)SetColorPostProcessMode:(PTColorPostProcessMode)mode;

    Swift

    func setColorPostProcessMode(_ mode: PTColorPostProcessMode)

    Parameters

    mode

    is the specific transform to be applied

    mode

    is the specific transform to be applied

  • Sets the color post processing transformation. This transform is applied to the rasterized bitmap as the final step in the rasterization process, and is applied directly to the resulting bitmap (disregarding any color space information). Color post processing only supported for RGBA output.

    This mode will map the brightness of the original rasterized bitmap to a gradient in image_file_contents from left to right.

    Sets the color post processing transformation. This transform is applied to the rasterized bitmap as the final step in the rasterization process, and is applied directly to the resulting bitmap (disregarding any color space information). Color post processing only supported for RGBA output.

    This mode will map the brightness of the original rasterized bitmap to a gradient in image_file_contents from left to right.

    Declaration

    Objective-C

    - (void)SetColorPostProcessMapFile:(PTFilter *)image_file_contents;

    Swift

    func setColorPostProcessMapFile(_ image_file_contents: PTFilter!)

    Parameters

    image_file_contents

    A filter with image file contents.

    image_file_contents

    A filter with image file contents.

  • Sets the color post processing transformation. This transform is applied to the rasterized bitmap as the final step in the rasterization process, and is applied directly to the resulting bitmap (disregarding any color space information). Color post processing only supported for RGBA output. This mode will map the brightness of the original rasterized bitmap to a gradient between whiteColor and blackColor

    Sets the color post processing transformation. This transform is applied to the rasterized bitmap as the final step in the rasterization process, and is applied directly to the resulting bitmap (disregarding any color space information). Color post processing only supported for RGBA output. This mode will map the brightness of the original rasterized bitmap to a gradient between whiteColor and blackColor

    Declaration

    Objective-C

    - (void)SetColorPostProcessColors:(unsigned int)white_color
                          black_color:(unsigned int)black_color;

    Swift

    func setColorPostProcessColors(_ white_color: UInt32, black_color: UInt32)

    Parameters

    white_color

    The white color (ARGB) of the page.

    black_color

    The black color (ARGB) of the page.

    white_color

    The white color (ARGB) of the page.

    black_color

    The black color (ARGB) of the page.

  • Declaration

    Objective-C

    - (PTColorPostProcessMode)GetColorPostProcessMode;

    Swift

    func getColorPostProcessMode() -> PTColorPostProcessMode

    Return Value

    the current color post processing mode.

  • Declaration

    Objective-C

    - (int)GetCurrentPage;

    Swift

    func getCurrentPage() -> Int32

    Return Value

    the current page displayed in the view.

  • Declaration

    Objective-C

    - (int)GetPageCount;

    Swift

    func getPageCount() -> Int32

    Return Value

    the total number of pages in the document.

  • Sets the current page to the first page in the document.

    Sets the current page to the first page in the document.

    Declaration

    Objective-C

    - (BOOL)GotoFirstPage;

    Swift

    func gotoFirstPage() -> Bool

    Return Value

    true if successful, false otherwise.

  • Sets the current page to the last page in the document.

    Sets the current page to the last page in the document.

    Declaration

    Objective-C

    - (BOOL)GotoLastPage;

    Swift

    func gotoLastPage() -> Bool

    Return Value

    true if successful, false otherwise.

  • Sets the current page to the next page in the document.

    Sets the current page to the next page in the document.

    Declaration

    Objective-C

    - (BOOL)GotoNextPage;

    Swift

    func gotoNextPage() -> Bool

    Return Value

    true if successful, false otherwise.

  • Sets the current page to the previous page in the document.

    Sets the current page to the previous page in the document.

    Declaration

    Objective-C

    - (BOOL)GotoPreviousPage;

    Swift

    func gotoPreviousPage() -> Bool

    Return Value

    true if successful, false otherwise.

  • Sets the current page to the given page.

    Sets the current page to the given page.

    Declaration

    Objective-C

    - (BOOL)SetCurrentPage:(int)page_num;

    Swift

    func setCurrentPage(_ page_num: Int32) -> Bool

    Return Value

    true if successful, false otherwise.

  • Changes the viewing area to fit a rectangle rect on page page_num. Rectangle must be specified in page coordinates. This will adjust current page and zoom appropriately.

    Changes the viewing area to fit a rectangle rect on page page_num. Rectangle must be specified in page coordinates. This will adjust current page and zoom appropriately.

    Declaration

    Objective-C

    - (BOOL)ShowRect:(int)page_num rect:(PTPDFRect *)rect;

    Swift

    func showRect(_ page_num: Int32, rect: PTPDFRect!) -> Bool

    Return Value

    true if successful, false otherwise.

  • Get a vector with the pages currently visible on the screen.

    Get a vector with the pages currently visible on the screen.

    Declaration

    Objective-C

    - (NSArray<NSNumber *> *)GetVisiblePages;

    Swift

    func getVisiblePages() -> [NSNumber]!

    Return Value

    a vector of the pages currently visible on the screen.

  • Returns the current zoom factor.

    Returns the current zoom factor.

    Declaration

    Objective-C

    - (double)GetZoom;

    Swift

    func getZoom() -> Double

    Return Value

    current zoom (or scaling) component used to display the page content.

  • Sets the zoom factor to a new value. The function zooms to a point at the center of the rendering buffer.

    Sets the zoom factor to a new value. The function zooms to a point at the center of the rendering buffer.

    Declaration

    Objective-C

    - (BOOL)SetZoom:(double)zoom;

    Swift

    func setZoom(_ zoom: Double) -> Bool

    Parameters

    zoom

    - new scaling component used to display the page content.

    zoom

    - new scaling component used to display the page content.

    Return Value

    true if successful, false otherwise.

  • Sets the zoom factor to a new value using the given pixel coordinate (x,y) as a zoom center, which will stay fixed on the screen.

    The zoom point (x,y) is represented in the screen space, which starts in the upper-left corner of the client window.

    Should you want to move (x, y) to the center of the client window, you can use the OnScroll() subsequently:

        int x, y;
        double zoom;
        ...
        view.SetZoom(x, y, zoom);
        int width = view.GetBufferWidth();
        int height = view.GetBufferHeight();
        int dx = (int)(x - (double)width/2 + 0.5);
        int dy = (int)(y - (double)height/2 + 0.5);
        view.OnScroll(dx, dy);
    

    Sets the zoom factor to a new value using the given pixel coordinate (x,y) as a zoom center, which will stay fixed on the screen.

    The zoom point (x,y) is represented in the screen space, which starts in the upper-left corner of the client window.

    Should you want to move (x, y) to the center of the client window, you can use the OnScroll() subsequently:

        int x, y;
        double zoom;
        ...
        view.SetZoom(x, y, zoom);
        int width = view.GetBufferWidth();
        int height = view.GetBufferHeight();
        int dx = (int)(x - (double)width/2 + 0.5);
        int dy = (int)(y - (double)height/2 + 0.5);
        view.OnScroll(dx, dy);
    

    Declaration

    Objective-C

    - (BOOL)SetZoomWithCoord:(int)x y:(int)y zoom:(double)zoom;

    Swift

    func setZoomWithCoord(_ x: Int32, y: Int32, zoom: Double) -> Bool

    Parameters

    x

    - the horizontal coordinate to zoom in.

    y

    - the vertical coordinate to zoom in.

    zoom

    - new scaling component used to display the page content.

    x

    - the horizontal coordinate to zoom in.

    y

    - the vertical coordinate to zoom in.

    zoom

    - new scaling component used to display the page content.

    Return Value

    true if successful, false otherwise.

  • Sets the zoom factor to a new value using the given pixel coordinate (x,y) to find an intersecting paragraph. The width of the paragraph helps to determine the zoom value, center of the paragraph is used as a zoom center. Paragraph has to contain more than one line and be wider than 1/5th of a page width. When called on a paragraph wider than current zoom level the new zoom level is set to fit the entire page(zoom out).

    The zoom point (x,y) is represented in the screen space, which starts in the upper-left corner of the client window.

    Sets the zoom factor to a new value using the given pixel coordinate (x,y) to find an intersecting paragraph. The width of the paragraph helps to determine the zoom value, center of the paragraph is used as a zoom center. Paragraph has to contain more than one line and be wider than 1/5th of a page width. When called on a paragraph wider than current zoom level the new zoom level is set to fit the entire page(zoom out).

    The zoom point (x,y) is represented in the screen space, which starts in the upper-left corner of the client window.

    Declaration

    Objective-C

    - (BOOL)SmartZoom:(int)x y:(int)y;

    Swift

    func smartZoom(_ x: Int32, y: Int32) -> Bool

    Parameters

    x

    - the horizontal coordinate to look for a text block.

    y

    - the vertical coordinate to look for a text block.

    x

    - the horizontal coordinate to look for a text block.

    y

    - the vertical coordinate to look for a text block.

    Return Value

    true if successful, false if no paragraph intersects the given point.

  • Rotates all pages in the document 90 degrees clockwise.

    Rotates all pages in the document 90 degrees clockwise.

    Declaration

    Objective-C

    - (void)RotateClockwise;

    Swift

    func rotateClockwise()
  • Rotates all pages in the document 90 degrees counter-clockwise.

    Rotates all pages in the document 90 degrees counter-clockwise.

    Declaration

    Objective-C

    - (void)RotateCounterClockwise;

    Swift

    func rotateCounterClockwise()
  • Declaration

    Objective-C

    - (PTRotate)GetRotation;

    Swift

    func getRotation() -> PTRotate

    Return Value

    The current rotation of this PDFView.

  • Declaration

    Objective-C

    - (int)GetPageNumberFromScreenPt:(double)x y:(double)y;

    Swift

    func getPageNumber(fromScreenPt x: Double, y: Double) -> Int32

    Return Value

    the number of the page located under the given screen coordinate. The positive number indicates a valid page, whereas number less than 1 means that no page was found.

  • Converts a point expressed in screen space to a point in canvas space.

    Converts a point expressed in screen space to a point in canvas space.

    Declaration

    Objective-C

    - (PTPDFPoint *)ConvScreenPtToCanvasPt:(PTPDFPoint *)pt;

    Swift

    func convScreenPt(toCanvasPt pt: PTPDFPoint!) -> PTPDFPoint!
  • Converts a point expressed in canvas space to a point in screen space.

    Converts a point expressed in canvas space to a point in screen space.

    Declaration

    Objective-C

    - (PTPDFPoint *)ConvCanvasPtToScreenPt:(PTPDFPoint *)pt;

    Swift

    func convCanvasPt(toScreenPt pt: PTPDFPoint!) -> PTPDFPoint!
  • Converts a point expressed in canvas space to a point in a page space.

    Converts a point expressed in canvas space to a point in a page space.

    Declaration

    Objective-C

    - (PTPDFPoint *)ConvCanvasPtToPagePt:(PTPDFPoint *)pt page_num:(int)page_num;

    Swift

    func convCanvasPt(toPagePt pt: PTPDFPoint!, page_num: Int32) -> PTPDFPoint!

    Parameters

    page_num

    the page number for the page used as the origin of the destination coordinate system. Negative values are used to represent the current page. Pages are indexed starting from one.

    page_num

    the page number for the page used as the origin of the destination coordinate system. Negative values are used to represent the current page. Pages are indexed starting from one.

  • Converts a point from a page space to point in canvas space.

    Converts a point from a page space to point in canvas space.

    Declaration

    Objective-C

    - (PTPDFPoint *)ConvPagePtToCanvasPt:(PTPDFPoint *)pt page_num:(int)page_num;

    Swift

    func convPagePt(toCanvasPt pt: PTPDFPoint!, page_num: Int32) -> PTPDFPoint!

    Parameters

    page_num

    the page number for the page used as the origin of the destination coordinate system. Negative values are used to represent the current page. Pages are indexed starting from one.

    page_num

    the page number for the page used as the origin of the destination coordinate system. Negative values are used to represent the current page. Pages are indexed starting from one.

  • Converts a point expressed in screen space to a point in a page space.

    Converts a point expressed in screen space to a point in a page space.

    Declaration

    Objective-C

    - (PTPDFPoint *)ConvScreenPtToPagePt:(PTPDFPoint *)pt page_num:(int)page_num;

    Swift

    func convScreenPt(toPagePt pt: PTPDFPoint!, page_num: Int32) -> PTPDFPoint!

    Parameters

    page_num

    the page number for the page used as the origin of the destination coordinate system. Negative values are used to represent the current page. Pages are indexed starting from one.

    page_num

    the page number for the page used as the origin of the destination coordinate system. Negative values are used to represent the current page. Pages are indexed starting from one.

  • Converts a point in a page space to a point in the screen space. If PDFView is in a non-continous page view mode, and the page is not visible, the result is undefined.

    Converts a point in a page space to a point in the screen space. If PDFView is in a non-continous page view mode, and the page is not visible, the result is undefined.

    Declaration

    Objective-C

    - (PTPDFPoint *)ConvPagePtToScreenPt:(PTPDFPoint *)pt page_num:(int)page_num;

    Swift

    func convPagePt(toScreenPt pt: PTPDFPoint!, page_num: Int32) -> PTPDFPoint!

    Parameters

    page_num

    the page number for the page used as the origin of the destination coordinate system. Negative values are used to represent the current page. Pages are indexed starting from one.

    page_num

    the page number for the page used as the origin of the destination coordinate system. Negative values are used to represent the current page. Pages are indexed starting from one.

  • Snaps an xy coordinate pair (in screen space) to the nearest piece of document geometry.

    Snaps an xy coordinate pair (in screen space) to the nearest piece of document geometry.

    Declaration

    Objective-C

    - (PTPDFPoint *)SnapToNearestInDoc:(PTPDFPoint *)screen_pt;

    Swift

    func snapToNearest(inDoc screen_pt: PTPDFPoint!) -> PTPDFPoint!
  • Set the point snapping mode for the SnapToNearestInDoc method. By default SnapToNearestInDoc will snap to line endpoints, midpoints, and intersections.

    Set the point snapping mode for the SnapToNearestInDoc method. By default SnapToNearestInDoc will snap to line endpoints, midpoints, and intersections.

    Declaration

    Objective-C

    - (void)SetSnappingMode:(unsigned int)mode_flags;

    Swift

    func setSnappingMode(_ mode_flags: UInt32)

    Parameters

    mode_flag

    a bitwise combination of the members of GeometryCollection::SnappingMode

    mode_flag

    a bitwise combination of the members of GeometryCollection::SnappingMode

    • - returns: the device transformation matrix. The device transformation
    • matrix maps the page coordinate system to screen (or device) coordinate
    • system. *
    • - parameter: page_num same as for PDFView.Conv???() methods. *
    • - note: to obtain a transformation matrix that maps screen
    • coordinates to page coordinates, you can invert the device matrix.
    • For example:
    • “`
    • Common::Matrix2D scr2page(pdfview.GetDeviceTransform());
    • scr2page.Inverse(); * ”`

    Declaration

    Objective-C

    - (PTMatrix2D *)GetDeviceTransform:(int)page_num;

    Swift

    func getDeviceTransform(_ page_num: Int32) -> PTMatrix2D!
  • Sets the error handling function to be called in case an error is encountered during page rendering.

    Declaration

    Objective-C

    - (void)SetErrorReportProc:(PTCallback *)instance;

    Swift

    func setErrorReportProc(_ instance: PTCallback!)

    Parameters

    error_proc

    Error handling callback function (or delegate in .NET)

    data

    Custom data to be passed as a second parameter to ‘error_proc’.

  • Sets the callback function (i.e. a delegate) that is called whenever current page number changes. This can be used to update the current page number within GUI applications etc.

    Declaration

    Objective-C

    - (void)SetCurrentPageProc:(PTCallback *)instance;

    Swift

    func setCurrentPageProc(_ instance: PTCallback!)

    Parameters

    curr_pagenum_proc

    Callback function (or a delegate in .NET).

    data

    Custom data to be passed as a second parameter to ‘curr_pagenum_proc’.

  • Sets the callback function (i.e. a delegate) for JavaScript action. Can be used to handle alert event which pops up a window with alert message.

    Declaration

    Objective-C

    - (void)SetJavaScriptEventCallBack:(PTCallback *)instance;

    Swift

    func setJavaScriptEventCallBack(_ instance: PTCallback!)

    Parameters

    js_proc

    Callback function (or a delegate in .NET).

    data

    user defined data

  • Sets the callback function (i.e. a delegate) that is called whenever current zoom (magnification) changes. This can be used to update the current zoom number within GUI applications etc.

    Declaration

    Objective-C

    - (void)SetCurrentZoomProc:(PTCallback *)instance;

    Swift

    func setCurrentZoomProc(_ instance: PTCallback!)

    Parameters

    curr_zoom_proc

    Callback function (or a delegate in .NET).

    data

    Custom data to be passed as a second parameter to ‘curr_zoom_proc’.

  • Requests action object to be executed by PDFViewCtrl. Action must belong to the document currently displayed in PDFViewCtrl.

    Declaration

    Objective-C

    - (void)ExecuteAction:(PTAction *)action;

    Swift

    func execute(_ action: PTAction!)

    Parameters

    action

    object that is to be executed.

  • Undocumented

    Declaration

    Objective-C

    - (void)ExecuteActionWithActionParameter: (PTActionParameter*)action_param;

    Swift

    func executeAction(with action_param: PTActionParameter!)
  • Returns the width of the scrollable space.

    Declaration

    Objective-C

    - (double)GetCanvasWidth;

    Swift

    func getCanvasWidth() -> Double
  • Returns the height of the scrollable space.

    Declaration

    Objective-C

    - (double)GetCanvasHeight;

    Swift

    func getCanvasHeight() -> Double
  • Declaration

    Objective-C

    - (double)GetHScrollPos;

    Swift

    func getHScrollPos() -> Double

    Return Value

    the current horizontal scroll position in the scrollable space.

  • Declaration

    Objective-C

    - (double)GetVScrollPos;

    Swift

    func getVScrollPos() -> Double

    Return Value

    the current vertical scroll position in the scrollable space.

  • Scrolls the contents of the rendering buffer ‘pix_dx’ horizontally and ‘pix_dy’ vertically.

    Declaration

    Objective-C

    - (void)OnScroll:(int)pix_dx pix_dy:(int)pix_dy;

    Swift

    func onScroll(_ pix_dx: Int32, pix_dy: Int32)

    Parameters

    pix_dx

    horizontal scroll offset, in pixels

    pix_dy

    vertical scroll offset, in pixels

  • Sets the horizontal scroll position in scrollable space.

    Declaration

    Objective-C

    - (void)SetHScrollPos:(double)pos;

    Swift

    func setHScrollPos(_ pos: Double)

    Parameters

    the

    new horizontal scroll position. The position should be in the range between 0 and GetCanvasWidth().

  • Sets the vertical scroll position in scrollable space.

    Should you want to center to a location (px, py) expressed in a page space, you can use the following code:

        //focus
        view.SetCurrentPage(page_num);
        view.ConvPagePtToScreenPt(px, py, page_num);
        view.SetZoom((int)px, (int)py, view.GetZoom());
    
        //center
        int width = view.GetBufferWidth();
        int height = view.GetBufferHeight();
        int dx = (int)(px - (double)width/2 + 0.5);
        int dy = (int)(py - (double)height/2 + 0.5);
        view.OnScroll(dx, dy);
    

    Declaration

    Objective-C

    - (void)SetVScrollPos:(double)pos;

    Swift

    func setVScrollPos(_ pos: Double)

    Parameters

    the

    new vertical scroll position. The position should be in the range between 0 and GetCanvasheight().

  • Resize rendering buffer to new dimensions.

    Note

    this method is typically used only in PDFNet for C++

    Declaration

    Objective-C

    - (void)OnSize:(int)width height:(int)height;

    Swift

    func onSize(_ width: Int32, height: Int32)

    Parameters

    width

    - The width of the target image in pixels.

    height

    - The height of the target image in pixels (the number of rows).

  • Declaration

    Objective-C

    - (BOOL)IsFinishedRendering:(BOOL)visible_region_only;

    Swift

    func isFinishedRendering(_ visible_region_only: Bool) -> Bool

    Parameters

    visible_region_only

    - Specifies if the method refers only to currently visible content.

    Return Value

    true is the rendering thread finished rendering the view, false if the rendering is still in progress.

  • Cancels rendering in progress. If PDFView is not busy rendering the page, the function has no side effects.

    Declaration

    Objective-C

    - (void)CancelRendering;

    Swift

    func cancelRendering()
  • Redraws the contents of the buffer.

    Declaration

    Objective-C

    - (void)Update:(BOOL)all;

    Swift

    func update(_ all: Bool)
  • Redraws the given area in the buffer.

    Declaration

    Objective-C

    - (void)UpdateWithRect:(PTPDFRect *)update;

    Swift

    func update(with update: PTPDFRect!)

    Parameters

    update

    The rectangle to update expressed in screen coordinates.

  • Redraws the area covered with a given annotation.

    Declaration

    Objective-C

    - (void)UpdateWithAnnot:(PTAnnot *)annot page_num:(int)page_num;

    Swift

    func update(with annot: PTAnnot!, page_num: Int32)

    Parameters

    annot

    The annotation to update.

    page_num

    The page number on which the annotation is located.

  • Redraws all instances (Widgets) of the field.

    Declaration

    Objective-C

    - (void)UpdateWithField:(PTField *)field;

    Swift

    func update(with field: PTField!)

    Parameters

    field

    the field for which to update all occurances

  • Updates the page layout within the view. This function must be called after document page sequence is modified (such as when a page is being added to or removed from a document) or after changes to page dimensions (e.g. after a page is rotated or resized).

    Declaration

    Objective-C

    - (void)UpdatePageLayout;

    Swift

    func updatePageLayout()
  • Returns the pointer to the internal memory buffer containing the rasterized image of the given page. The buffer size is at least ‘GetBufferHeight*GetBufferStride’ bytes. The pixel data is stored in 8 bit per component, BGRA format.

    Declaration

    Objective-C

    - (NSData *)GetBuffer;

    Swift

    func getBuffer() -> Data!
  • Update the internal memory buffer that can be returned by GetBuffer(). Since PDFView may not necessarily update the buffer until it finishes rendering the current viewing area, it is required to call UpdateBuffer() to force PDFView to write the current rasterized contents to the buffer. This is important for, say, calling GetBuffer() in a different thread to implement progressive rendering.

    Note

    UpdateBuffer() ensures thread safety internally. In addition, PDFView calls UpdateBuffer() internally before the user-defined finishing-rendering callback function (specified by SetRenderFinishProc) is called, if applicable. this method is typically used only in PDFNet for C++.

    Declaration

    Objective-C

    - (void)UpdateBuffer;

    Swift

    func updateBuffer()
  • Returns the width of the rendering buffer in pixels.

    Note

    this method is typically used only in PDFNet for C++

    Declaration

    Objective-C

    - (int)GetBufferWidth;

    Swift

    func getBufferWidth() -> Int32
  • Returns the width of the rendering buffer in pixels.

    Note

    this method is typically used only in PDFNet for C++

    Declaration

    Objective-C

    - (int)GetBufferHeight;

    Swift

    func getBufferHeight() -> Int32
  • Returns the stride of the rendering buffer in pixels.

    Note

    this method is typically used only in PDFNet for C++

    Declaration

    Objective-C

    - (int)GetBufferStride;

    Swift

    func getBufferStride() -> Int32
  • Disable rendering of a particular annotation. This does not change the annotation itself, just how it is displayed in this viewer instance.

    Declaration

    Objective-C

    - (void)HideAnnotation:(PTAnnot *)annot;

    Swift

    func hideAnnotation(_ annot: PTAnnot!)

    Parameters

    annot

    The annotation object to cease drawing for.

  • Enable rendering of a particular annotation. Only has an effect if HideAnnotation() has previously been called on the same annot.

    Declaration

    Objective-C

    - (void)ShowAnnotation:(PTAnnot *)annot;

    Swift

    func showAnnotation(_ annot: PTAnnot!)

    Parameters

    annot

    The annotation object to resume rendering.

  • Enable or disable annotation and forms rendering. By default, all annotations and form fields are rendered.

    Declaration

    Objective-C

    - (void)SetDrawAnnotations:(BOOL)render_annots;

    Swift

    func setDrawAnnotations(_ render_annots: Bool)

    Parameters

    render_annots

    True to draw annotations, false otherwise.

  • Enables or disables URL extraction.

    @default by default URL extraction is disabled

    Note

    If set to enabled when the document is already opened, it may not find links on pages that were already rendered. It is suggested to set this flag before opening the document.

    Declaration

    Objective-C

    - (void)SetUrlExtraction:(BOOL)enabled;

    Swift

    func setUrlExtraction(_ enabled: Bool)

    Parameters

    enabled

    if true URL extraction is enabled, if false URL extraction is disabled.

  • Gets the link info at a given point, specified in client space.

    Note

    To get valid links, SetUrlExtraction(boolean) must be set to true before opening the document.

    Declaration

    Objective-C

    - (PTLinkInfo *)GetLinkAt:(int)x y:(int)y;

    Swift

    func getLinkAt(_ x: Int32, y: Int32) -> PTLinkInfo!

    Parameters

    x

    the x position in client space

    y

    the y position in client space

    Return Value

    the LinkInfo object with the link information or null if no link is found in the queried location.

  • Enable or disable highlighting form fields. Default is disabled.

    Declaration

    Objective-C

    - (void)SetHighlightFields:(BOOL)highlight_fields;

    Swift

    func setHighlightFields(_ highlight_fields: Bool)

    Parameters

    highlight_fields

    true to highlight, false otherwise.

  • Set the border color for required fields

    This option only has an effect if field highlighting is turned on using SetHighlightFields(true).

    Declaration

    Objective-C

    - (void)SetRequiredFieldBorderColor:(PTColorPt *)new_border_color;

    Swift

    func setRequiredFieldBorderColor(_ new_border_color: PTColorPt!)

    Parameters

    new_border_color

    the new border color, in rgba form.

  • Enable or disable anti-aliasing.

    Anti-Aliasing is a technique used to improve the visual quality of images when displaying them on low resolution devices (for example, low DPI computer monitors).

    @default Anti-aliasing is enabled by default.

    Declaration

    Objective-C

    - (void)SetAntiAliasing:(BOOL)enable_aa;

    Swift

    func setAntiAliasing(_ enable_aa: Bool)
  • Enable or disable path hinting.

    Declaration

    Objective-C

    - (void)SetPathHinting:(BOOL)enable_hinting;

    Swift

    func setPathHinting(_ enable_hinting: Bool)

    Parameters

    enable_hinting

    if true path hinting is enabled. Path hinting is used to slightly adjust paths in order to avoid or alleviate artifacts of hair line cracks between certain graphical elements. This option is turned on by default.

  • Set thin line adjustment parameters.

    Declaration

    Objective-C

    - (void)SetThinLineAdjustment:(BOOL)pixel_grid_fit
                    stroke_adjust:(BOOL)stroke_adjust;

    Swift

    func setThinLineAdjustment(_ pixel_grid_fit: Bool, stroke_adjust: Bool)

    Parameters

    pixel_grid_fit

    if true (horizontal/vertical) thin lines will be snapped to integer pixel positions. This helps make thin lines look sharper and clearer. This option is turned off by default and it only works if path hinting is enabled.

    stroke_adjust

    if true auto stroke adjustment is enabled. Currently, this would make lines with sub-pixel width to be one-pixel wide. This option is turned on by default.

  • Enable or disable image smoothing.

    The rasterizer allows a trade-off between rendering quality and rendering speed. This function can be used to indicate the preference between rendering speed and quality.

    Note

    image smoothing option has effect only if the source image has higher resolution that the output resolution of the image on the rasterized page. PDFNet automatically controls at what resolution/zoom factor, ‘image smoothing’ needs to take effect.

    Declaration

    Objective-C

    - (void)SetImageSmoothing:(BOOL)smoothing_enabled;

    Swift

    func setImageSmoothing(_ smoothing_enabled: Bool)

    Parameters

    smoothing_enabled

    True to enable image smoothing, false otherwise. @default image smoothing is enabled.

  • Enables of disables caching of images, fonts, and other resources. Disabling caching can lower memory requirements at the expense of rendering speed.

    Declaration

    Objective-C

    - (void)SetCaching:(BOOL)enabled;

    Swift

    func setCaching(_ enabled: Bool)

    Parameters

    enabled

    if true caching is enabled, if false caching is disabled. @default by default caching is enabled

  • Sets the core graphics library used for rasterization and rendering. Using this method it is possible to quickly switch between different implementations. By default, PDFNet uses a built-in, high-quality, and platform independent rasterizer.

    Declaration

    Objective-C

    - (void)SetRasterizerType:(PTRasterizerType)type;

    Swift

    func setRasterizerType(_ type: PTRasterizerType)

    Parameters

    type

    Rasterizer type.

  • Sets the gamma factor used for anti-aliased rendering.

    Gamma correction can be used to improve the quality of anti-aliased image output and can (to some extent) decrease the appearance common anti-aliasing artifacts (such as pixel width lines between polygons).

    Note

    Gamma correction is used only in the built-in rasterizer.

    Declaration

    Objective-C

    - (void)SetGamma:(double)exp;

    Swift

    func setGamma(_ exp: Double)

    Parameters

    exp

    is the exponent value of gamma function. Typical values are in the range from 0.1 to 3.

  • Enable or disable support for overprint and overprint simulation. Overprint is a device dependent feature and the results will vary depending on the output color space and supported colorants (i.e. CMYK, CMYK+spot, RGB, etc).

    @default By default overprint is only enabled for PDF/X files.

    Declaration

    Objective-C

    - (void)SetOverprint:(PTOverprintPreviewMode)op;

    Swift

    func setOverprint(_ op: PTOverprintPreviewMode)

    Parameters

    op

    e_op_on: always enabled; e_op_off: always disabled; e_op_pdfx_on: enabled for PDF/X files only.

  • Sets the Optional Content Group (OCG) context that should be used when viewing the document. This function can be used to change the current OCG context. Optional content (such as PDF layers) will be selectively rendered based on the states of optional content groups in the given context.

    Note

    Unlike PDFDraw.SetOCGContext() this method copies the given context. As a result, in order to modify the state of OCG groups in the current context use GetOCGContext() to obtain the currently selected content and then modify states.

    Declaration

    Objective-C

    - (void)SetOCGContext:(PTContext *)ctx;

    Swift

    func setOCGContext(_ ctx: PTContext!)

    Parameters

    ctx

    Optional Content Group (OCG) context, or NULL if the rasterizer should render all content on the page.

  • Declaration

    Objective-C

    - (PTContext *)GetOCGContext;

    Swift

    func getOCGContext() -> PTContext!

    Return Value

    the Optional Content Group (OCG) context associated with this PDFView, or NULL (i.e. context.IsValid()==false) if there is no OCG context associated with the view. If an OCG context associated with the view, optional content (such as PDF layers) will be selectively rendered based on the states of optional content groups in the given context.

  • Prompts the PDFViewCtrl to update its list of optional content groups. Call this method if you modify the PDFDoc in a way that adds or removes a layer. For example, after using Stamper to create a stamp.

    Declaration

    Objective-C

    - (void)UpdateOCGContext;

    Swift

    func updateOCGContext()
  • Set a callback function that can be used to notify the client that PDFView is about to start rendering and modifying the contents of the rendering buffer.

    Note

    this method is available only in the C++ SDK and not available in pre-packaged PDF viewing controls (.NET/Java/ActiveX).

    Declaration

    Objective-C

    - (void)SetRenderBeginProc:(PTCallback *)instance;

    Swift

    func setRenderBeginProc(_ instance: PTCallback!)

    Parameters

    proc

    A callback function that will be called just before PDFView starts rendering.

    data

    Custom data to be passed as a parameter to ‘proc’.

  • Set a callback function that can be used to notify the client that PDFView finished rendering and modifying the contents of the rendering buffer.

    Note

    this method is available only in the C++ SDK and is not available in pre-packaged PDF viewing controls (.NET/Java/ActiveX).

    Declaration

    Objective-C

    - (void)SetRenderFinishProc:(PTCallback *)instance;

    Swift

    func setRenderFinishProc(_ instance: PTCallback!)

    Parameters

    proc

    A callback function that will be called after PDFView is done with rendering.

    data

    Custom data to be passed as a parameter to ‘proc’.

  • Sets the selection mode used for text highlighting.

    Declaration

    Objective-C

    - (void)SetTextSelectionMode:(PTTextSelectionMode)tm;

    Swift

    func setTextSelectionMode(_ tm: PTTextSelectionMode)

    Parameters

    tm

    the text selection mode.

  • Selects text within the given region using the current text selection mode.

    Declaration

    Objective-C

    - (BOOL)SelectWithTextSelect:(double)x1
                              y1:(double)y1
                              x2:(double)x2
                              y2:(double)y2;

    Swift

    func select(withTextSelect x1: Double, y1: Double, x2: Double, y2: Double) -> Bool

    Parameters

    x1,

    y1, x2, y2 - two points (screen coordinates, origin located at the upper-left corner of this view) defining the opposite corners of a selection rectangle.

    Return Value

    true if some text was selected, false otherwise.

  • Selects text within the given region using the current text selection mode with defined snap-to-start and snap-to-end modes.

    Declaration

    Objective-C

    - (BOOL)SelectWithSnapping:(double)x1
                            y1:(double)y1
                            x2:(double)x2
                            y2:(double)y2
                 snap_to_start:(BOOL)snap_to_start
                   snap_to_end:(BOOL)snap_to_end;

    Swift

    func select(withSnapping x1: Double, y1: Double, x2: Double, y2: Double, snap_to_start: Bool, snap_to_end: Bool) -> Bool

    Parameters

    x1,

    y1, x2, y2 - two points (screen coordinates, origin located at the upper-left corner of this view) defining the opposite corners of a selection rectangle.

    snap_to_start,

    snap-to-end: if selected text should contain the whole word at start/end of selection points.

    Return Value

    true if some text was selected, false otherwise.

  • Selects text within the given region using the current text selection mode with smart snap-to-start and snap-to-end modes.

    Declaration

    Objective-C

    - (BOOL)SelectWithSmartSnapping:(double)x1
                                 y1:(double)y1
                                 x2:(double)x2
                                 y2:(double)y2;

    Swift

    func select(withSmartSnapping x1: Double, y1: Double, x2: Double, y2: Double) -> Bool

    Parameters

    x1,

    y1, x2, y2 - two points (screen coordinates, origin located at the upper-left corner of this view) defining the opposite corners of a selection rectangle.

    Return Value

    true if some text was selected, false otherwise.

  • Selects texts using structural mode.

    Declaration

    Objective-C

    - (BOOL)SelectWithStructure:(double)x1
                             y1:(double)y1
                          page1:(int)page1
                             x2:(double)x2
                             y2:(double)y2
                          page2:(int)page2;

    Swift

    func select(withStructure x1: Double, y1: Double, page1: Int32, x2: Double, y2: Double, page2: Int32) -> Bool

    Parameters

    (x1,

    y1), page1 - the first selection point (in page coordinates space) on page page1

    (x2,

    y2), page2 - the second selection point (in page coordinates space) on page page2

    Return Value

    true if some texts were selected, false otherwise.

  • Selects texts identified by Highlights.

    Declaration

    Objective-C

    - (BOOL)SelectWithHighlights:(PTHighlights *)highlights;

    Swift

    func select(with highlights: PTHighlights!) -> Bool

    Parameters

    highlights

    - an instance of Highlights class.

    Return Value

    true if some texts were selected, false otherwise.

  • Selects a region according to a Selection object

    Declaration

    Objective-C

    - (BOOL)SelectWithSelection:(PTSelection *)select;

    Swift

    func select(with select: PTSelection!) -> Bool

    Parameters

    select

    - an instance of the Selection class

    Return Value

    true if some texts were selected, false otherwise.

  • Cancel the text search thread if FindText() is started in a different thread. Note that if the text search thread is currently being suspended by the render thread, it will only be canceled after it is awaken by the render thread.

    Declaration

    Objective-C

    - (void)CancelFindText;

    Swift

    func cancelFindText()
  • Selects all text on the page.

    Declaration

    Objective-C

    - (void)SelectAll;

    Swift

    func selectAll()
  • Declaration

    Objective-C

    - (BOOL)HasSelection;

    Swift

    func hasSelection() -> Bool

    Return Value

    return true if there is selection, false otherwise.

  • Remove any text selection.

    Declaration

    Objective-C

    - (void)ClearSelection;

    Swift

    func clearSelection()
  • Declaration

    Objective-C

    - (PTSelection *)GetSelection:(int)pagenum;

    Swift

    func getSelection(_ pagenum: Int32) -> PTSelection!

    Return Value

    Current text selection for a given page

  • Declaration

    Objective-C

    - (int)GetSelectionBeginPage;

    Swift

    func getSelectionBeginPage() -> Int32

    Return Value

    the first page number that has text selection on it. Useful when there are selections on multiple pages at the same time.

  • Declaration

    Objective-C

    - (int)GetSelectionEndPage;

    Swift

    func getSelectionEndPage() -> Int32

    Return Value

    the last page number that has text selection on it. Useful when there are selections on multiple pages at the same time.

  • Declaration

    Objective-C

    - (BOOL)HasSelectionOnPage:(int)ipage;

    Swift

    func hasSelection(onPage ipage: Int32) -> Bool

    Return Value

    returns true if given page number has any text selection on it. Useful when there are selections on multiple pages at the same time.

  • Requests for preparing words of the given page. Note: Words are going to be prepared asynchronously

    Declaration

    Objective-C

    - (void)PrepareWords:(int)page_num;

    Swift

    func prepareWords(_ page_num: Int32)

    Parameters

    page_num

    - page number

  • Declaration

    Objective-C

    - (BOOL)WereWordsPrepared:(int)page_num;

    Swift

    func wereWordsPrepared(_ page_num: Int32) -> Bool

    Parameters

    page_num

    - page number

    Return Value

    true if words of the given page has been prepared, false otherwise

  • Declaration

    Objective-C

    - (BOOL)IsThereTextInRect:(double)x1 y1:(double)y1 x2:(double)x2 y2:(double)y2;

    Swift

    func isThereText(inRect x1: Double, y1: Double, x2: Double, y2: Double) -> Bool

    Return Value

    true if there is a text in the given rectangle, false otherwise and point (x2, y2) is the end selection point. The points are defined in screen space.

  • Requests for preparing annotations of the given page. Note: Annotations are going to be prepared asynchronously

    Declaration

    Objective-C

    - (void)PrepareAnnotsForMouse:(int)page_num
               distance_threshold:(double)distance_threshold
              minimum_line_weight:(double)minimum_line_weight;

    Swift

    func prepareAnnots(forMouse page_num: Int32, distance_threshold: Double, minimum_line_weight: Double)

    Parameters

    page_num

    - page number

    distance_threshold

    - Maximum distance from the point (x, y) to the annotation for the annot to be considered a hit.

    minimum_line_weight

    - For very thin lines, it is almost impossible to hit the actual line. This specifies a minimum line thickness (in screen coordinates) for the purpose of calculating whether a point is inside the annotation or not

  • Declaration

    Objective-C

    - (BOOL)WereAnnotsForMousePrepared:(int)page_num;

    Swift

    func wereAnnots(forMousePrepared page_num: Int32) -> Bool

    Parameters

    page_num

    - page number

    Return Value

    true if annotations of the given page have been prepared, false otherwise

  • Declaration

    Objective-C

    - (PTAnnotType)GetAnnotTypeUnder:(double)x y:(double)y;

    Swift

    func getAnnotTypeUnder(_ x: Double, y: Double) -> PTAnnotType

    Parameters

    x

    - x coordinate of the input point

    y

    - y coordinate in the input point

    Return Value

    annotation type at the given point

  • Enables or disables drawing of a thin border around each page.

    Declaration

    Objective-C

    - (void)SetPageBorderVisibility:(BOOL)border_visible;

    Swift

    func setPageBorderVisibility(_ border_visible: Bool)

    Parameters

    border_visible

    - if true, the border will be visible.

  • Enables or disables the transparency grid (check board pattern) to reflect page transparency.

    Declaration

    Objective-C

    - (void)SetPageTransparencyGrid:(BOOL)trans_grid_visible;

    Swift

    func setPageTransparencyGrid(_ trans_grid_visible: Bool)

    Parameters

    trans_grid_visible

    - if true, the grid is turned on.

  • Sets the default ‘paper’ color used to draw background of each page.

    Declaration

    Objective-C

    - (void)SetDefaultPageColor:(unsigned char)r
                              g:(unsigned char)g
                              b:(unsigned char)b;

    Swift

    func setDefaultPageColor(_ r: UInt8, g: UInt8, b: UInt8)

    Parameters

    r,

    g, b - RGB color specifying the default page color.

  • Sets the default background color used to paint the area surrounding each page.

    Declaration

    Objective-C

    - (void)SetBackgroundColor:(unsigned char)r
                             g:(unsigned char)g
                             b:(unsigned char)b
                             a:(unsigned char)a;

    Swift

    func setBackgroundColor(_ r: UInt8, g: UInt8, b: UInt8, a: UInt8)

    Parameters

    r,

    g, b - RGB color specifying the default background color.

    a

    - The alpha value of the background color. Default value is 255.

  • Sets the horizontal alignment used for rendering pages within the view.

    Declaration

    Objective-C

    - (void)SetHorizontalAlign:(int)align;

    Swift

    func setHorizontalAlign(_ align: Int32)

    Parameters

    align

    an integer specifying the horizontal alignment. Depending of whether align is positive, negative, or zero - pages will be right, left or center aligned: align<0 -> pages are left aligned. align==0 -> pages are centered. align>0 -> pages are right aligned.

  • Sets the vertical alignment used for rendering pages within the view.

    Declaration

    Objective-C

    - (void)SetVerticalAlign:(int)align;

    Swift

    func setVerticalAlign(_ align: Int32)

    Parameters

    align

    an integer specifying the vertical alignment. Depending of whether align is positive, negative, or zero - pages will be bottom, top or center aligned: align<0 -> pages are top aligned. align==0 -> pages are centered. align>0 -> pages are bottom aligned.

  • Sets the vertical and horizontal padding and column spacing between adjacent pages in the view.

    Declaration

    Objective-C

    - (void)SetPageSpacing:(int)horiz_col_space
            vert_col_space:(int)vert_col_space
                 horiz_pad:(int)horiz_pad
                  vert_pad:(int)vert_pad;

    Swift

    func setPageSpacing(_ horiz_col_space: Int32, vert_col_space: Int32, horiz_pad: Int32, vert_pad: Int32)

    Parameters

    horiz_space

    horizontal spacing (represented in pixels) between adjacent pages in the view. Default is 10.

    vert_space

    vertical spacing (represented in pixels) between adjacent pages in the view. Default is 10.

  • Sets the cache parameters of the page cache on disk (which caches content streams and
    mipmapped images) for this specific document. These parameters will override the default cache
    

    parameters. Note that if this function is called after the document has been rasterized, it has no effect.

    Declaration

    Objective-C

    + (void)SetViewerCache:(PTSDFDoc *)document
            max_cache_size:(unsigned long)max_cache_size
                   on_disk:(BOOL)on_disk;

    Swift

    class func setViewerCache(_ document: PTSDFDoc!, max_cache_size: UInt, on_disk: Bool)

    Parameters

    document

    - The document whose settings will be modified.

    @default Desktop: max_cache_size = 512 MB, on_disk = true | Mobile: max_cache_size = 100 MB, on_disk = false

    max_cache_size

    - The maximum size, in bytes, of the entire document’s page cache. Set to zero to disable the viewer cache.

    on_disk

    - If set to ‘true’, cache will be stored on the local filesystem. If set to ‘false’, cache will be stored in heap memory.

  • Set device pixel density

    Declaration

    Objective-C

    - (void)SetDevicePixelDensity:(double)dpi scale_factor:(double)scale_factor;

    Swift

    func setDevicePixelDensity(_ dpi: Double, scale_factor: Double)
  • Gets the annotation bounding box in screen points

    Declaration

    Objective-C

    - (PTPDFRect *)GetScreenRectForAnnot:(PTAnnot *)annot page_num:(int)page_num;

    Swift

    func getScreenRect(for annot: PTAnnot!, page_num: Int32) -> PTPDFRect!

    Parameters

    annot

    target annotation

    page_num

    the page number that the annotation is on S

    Return Value

    the annotation bounding box in screen points

  • Gets the annotation at the (x, y) position expressed in screen coordinates

    Declaration

    Objective-C

    - (PTAnnot *)GetAnnotationAt:(int)x
                               y:(int)y
               distanceThreshold:(double)distanceThreshold
               minimumLineWeight:(double)minimumLineWeight;

    Swift

    func getAnnotationAt(_ x: Int32, y: Int32, distanceThreshold: Double, minimumLineWeight: Double) -> PTAnnot!

    Parameters

    x

    x coordinate of the screen point

    y

    y coordinate of the screen point

    distanceThreshold

    Maximum distance from the point (x, y) to the annotation for the annot to be considered a hit.

    minimumLineWeight

    For very thin lines, it is almost impossible to hit the actual line. This specifies a minimum line thickness (in screen coordinates) for the purpose of calculating whether a point is inside the annotation or not.

    Return Value

    the annotation at (x, y). If there is no annotation at (x, y), the returned annotation’s IsValid method will return false.

  • Sets the page viewing mode

    Declaration

    Objective-C

    - (void)SetPageViewMode:(PTPageViewMode)mode;

    Swift

    func setPageViewMode(_ mode: PTPageViewMode)

    Parameters

    mode

    - the new page viewing mode. @default The default PageView mode is e_fit_width.

  • Declaration

    Objective-C

    - (PTPageViewMode)GetPageViewMode;

    Swift

    func getPageViewMode() -> PTPageViewMode

    Return Value

    the current page viewing mode

  • Helper function that will refresh annotation and/or field appearances if needed, and then render modified page areas, all based on the contents of the view_change parameter.

    Declaration

    Objective-C

    - (void)RefreshAndUpdate:(PTViewChangeCollection *)view_change;

    Swift

    func refreshAndUpdate(_ view_change: PTViewChangeCollection!)

    Parameters

    view_change

    contains all the updated fields and rectangles.

  • Sets the reference page view mode. In a non-continous page presentation mode, the reference page view mode is used to determine the page view mode upon a page change event. For example, if the reference page view mode is set to e_fit_width, the new page coming in will be displayed with width-fit mode.

    Declaration

    Objective-C

    - (void)SetPageRefViewMode:(PTPageViewMode)mode;

    Swift

    func setPageRefViewMode(_ mode: PTPageViewMode)

    Parameters

    mode

    The reference page view mode to set. Valid values are e_fit_page, e_fit_width, and e_fit_height.

  • Gets the reference page view mode. See more details about reference page view mode in {@link #setPageRefViewMode(int)}.

    Declaration

    Objective-C

    - (PTPageViewMode)GetPageRefViewMode;

    Swift

    func getPageRefViewMode() -> PTPageViewMode
  • Specify the different thumbnail settings for the viewer. It is recommended that this not be called after SetDoc in order to avoid clearing cached thumbnails. Calling this method with different parameters will also clear the persistent disk cache if it is in use.

    Declaration

    Objective-C

    - (void)SetupThumbnails:(BOOL)use_embedded
          generate_at_runtime:(BOOL)generate_at_runtime
               use_disk_cache:(BOOL)use_disk_cache
        thumb_max_side_length:(int)thumb_max_side_length
           max_abs_cache_size:(unsigned long)max_abs_cache_size
          max_perc_cache_size:(double)max_perc_cache_size;

    Swift

    func setupThumbnails(_ use_embedded: Bool, generate_at_runtime: Bool, use_disk_cache: Bool, thumb_max_side_length: Int32, max_abs_cache_size: UInt, max_perc_cache_size: Double)

    Parameters

    use_embedded

    Enables or disables using thumbnails embedded in the PDF document as a preview of the rendered page. (Currently ignored - future versions may take advantage of embedded thumbnails)

    generate_at_runtime

    Enables or disables generating thumbnails at runtime.

    use_disk_cache

    Enables or disables caching thumbnails on disk. If possible thumbnails are cached in a persistent manner.

    thumb_max_side_length

    The maximum size, in pixels, of a dimension of generated thumbnails.

    max_abs_cache_size

    The absolute maximum size on disk, in bytes, for the temporary thumbnail cache.

    max_perc_cache_size

    The maximum percentage of free disk space, in the range 0 - 1.0, that the cache can take up.

  • Remove all thumbnails from the persistent disk cache.

    Declaration

    Objective-C

    - (void)ClearThumbCache;

    Swift

    func clearThumbCache()
  • Retrieves the specified thumbnail from the persistent thumbnail cache on disk, then calling proc on the resulting thumbnail.

    Declaration

    Objective-C

    - (void)GetThumbAsync:(int)page_num instance:(PTCallback *)instance;

    Swift

    func getThumbAsync(_ page_num: Int32, instance: PTCallback!)

    Parameters

    page_num

    The page number of the thumbnail.

    proc

    A callback function that will be called after the thumbnail is retrieved, or if that retrieval fails.

    data

    Custom data to be passed as a parameter to ‘proc’.

  • Gets the data size of a cached thumbnail.

    Declaration

    Objective-C

    - (unsigned long)GetThumbInCacheSize:(int)page_num;

    Swift

    func getThumbInCacheSize(_ page_num: Int32) -> UInt

    Parameters

    page_num

    The page number of the thumbnail.

    Return Value

    if the thumbnail is available returns the size of the thumbnail in bytes otherwise returns 0

  • Retrieves the specified thumbnail from the persistent thumbnail cache on disk if it is available.

    Declaration

    Objective-C

    - (BOOL)GetThumbInCache:(int)page_num
                        buf:(NSData *)buf
                  out_width:(unsigned int)out_width
                 out_height:(unsigned int)out_height;

    Swift

    func getThumbInCache(_ page_num: Int32, buf: Data!, out_width: UInt32, out_height: UInt32) -> Bool

    Parameters

    page_num

    The page number of the thumbnail.

    buf

    the buffer in which to store thumbnail data. This buffer should have space for GetThumbInCacheSize bytes.

    out_width

    the width of the thumbnail

    out_height

    the height of the thumbnail

    Return Value

    true if the thumbnail is found in the cache and false otherwise.

  • Cancel all pending GetThumbAsync requests. Your callback function will still be called for each canceled request, but ‘was_thumb_found’ will be set to ‘false’.

    Declaration

    Objective-C

    - (void)CancelAllThumbRequests;

    Swift

    func cancelAllThumbRequests()
  • Sets a callback for issuing a render request on the UI thread. The callback will be called from a secondary thread. The called code is responsible for dispatching an event to the UI thread using the relevant mechanism.

    Declaration

    Objective-C

    - (void)SetRequestRenderInWorkerThreadProc:(PTCallback *)instance;

    Swift

    func setRequestRender(inWorkerThreadProc instance: PTCallback!)

    Parameters

    proc

    The callback.

    data

    Custom data to be passed as a parameter to ‘proc’.

  • Sets the FindText handling function to be called once FindTextAsync is done, whether it was interrupted, canceled, or completed.

    Declaration

    Objective-C

    - (void)SetFindTextHandler:(PTCallback *)instance;

    Swift

    func setFindTextHandler(_ instance: PTCallback!)

    Parameters

    instance

    A pointer to the Callback object

  • Searches for the provided search string in the documents in a secondary thread, and calls FindTextHandler with the resulting selection.

    Declaration

    Objective-C

    - (void)FindTextAsync:(NSString *)search_str
               match_case:(BOOL)match_case
         match_whole_word:(BOOL)match_whole_word
                search_up:(BOOL)search_up
                  reg_exp:(BOOL)reg_exp;

    Swift

    func findTextAsync(_ search_str: String!, match_case: Bool, match_whole_word: Bool, search_up: Bool, reg_exp: Bool)

    Parameters

    search_str

    The string to search for in the document

    match_case

    Set to true for case-sensitive search

    match_whole_word

    Set to true to match whole words only

    search_up

    Set to true to search up through the document

    reg_exp

    Set to true to interpret search_str as a regular expression

  • Returns a vector of all of the annotations on the given page.

    @returns A vector of all of the annotations on the given page.

    Declaration

    Objective-C

    - (NSArray<PTAnnot *> *)GetAnnotationsOnPage:(int)page_num;

    Swift

    func getAnnotationsOnPage(_ page_num: Int32) -> [PTAnnot]!

    Parameters

    page_num

    The page number for which to retrieve annotations.

  • Returns a vector of annotations under the line (x1, y1, x2, y2) expressed in screen coordinates. Does not include form field annotations.

    @returns A vector of annotations under the line (x1, y1, x2, y2) expressed in screen coordinates.

    Declaration

    Objective-C

    - (NSArray<PTAnnot *> *)GetAnnotationListAt:(int)x1
                                             y1:(int)y1
                                             x2:(int)x2
                                             y2:(int)y2;

    Swift

    func getAnnotationList(at x1: Int32, y1: Int32, x2: Int32, y2: Int32) -> [PTAnnot]!

    Parameters

    x1

    The x-coordinate of the first point of the line.

    y1

    The y-coordinate of the first point of the line.

    x2

    The x-coordinate of the second point of the line.

    y2

    The y-coordinate of the second point of the line.

  • Undocumented

    Declaration

    Objective-C

    - (void)EnableUndoRedo;

    Swift

    func enableUndoRedo()
  • Undocumented

    Declaration

    Objective-C

    - (NSString *)Undo;

    Swift

    func undo() -> String!
  • Undocumented

    Declaration

    Objective-C

    - (NSString *)Redo;

    Swift

    func redo() -> String!
  • Undocumented

    Declaration

    Objective-C

    - (void)TakeSnapshot: (NSString *)meta_info;

    Swift

    func takeSnapshot(_ meta_info: String!)
  • Undocumented

    Declaration

    Objective-C

    - (NSString *)GetNextUndoInfo;

    Swift

    func getNextUndoInfo() -> String!
  • Undocumented

    Declaration

    Objective-C

    - (NSString *)GetNextRedoInfo;

    Swift

    func getNextRedoInfo() -> String!
  • Undocumented

    Declaration

    Objective-C

    - (void)RevertAllChanges;

    Swift

    func revertAllChanges()
  • Undocumented

    Declaration

    Objective-C

    - (PTExternalAnnotManager*)GetExternalAnnotManager: (NSString *)author;

    Swift

    func getExternalAnnotManager(_ author: String!) -> PTExternalAnnotManager!
  • Undocumented

    Declaration

    Objective-C

    - (BOOL)DownloaderUpdatePage: (void *)doc page_num:  (unsigned int)page_num obj_num:  (unsigned int)obj_num;

    Swift

    func downloaderUpdatePage(_ doc: UnsafeMutableRawPointer!, page_num: UInt32, obj_num: UInt32) -> Bool
  • Undocumented

    Declaration

    Objective-C

    - (void)DownloaderUpdateOutline: (void *)doc;

    Swift

    func downloaderUpdateOutline(_ doc: UnsafeMutableRawPointer!)
  • Undocumented

    Declaration

    Objective-C

    - (void)DownloaderUpdateThumb: (void *)doc page_num:  (unsigned int)page_num obj_num:  (unsigned int)obj_num;

    Swift

    func downloaderUpdateThumb(_ doc: UnsafeMutableRawPointer!, page_num: UInt32, obj_num: UInt32)
  • Undocumented

    Declaration

    Objective-C

    - (void)DownloaderFinishedDownload: (void *)doc;

    Swift

    func downloaderFinishedDownload(_ doc: UnsafeMutableRawPointer!)
  • Undocumented

    Declaration

    Objective-C

    - (BOOL)DownloaderIsCorrectDoc: (void *)doc;

    Swift

    func downloaderIsCorrectDoc(_ doc: UnsafeMutableRawPointer!) -> Bool
  • Undocumented

    Declaration

    Objective-C

    - (void)DownloaderInitialized: (void *)doc;

    Swift

    func downloaderInitialized(_ doc: UnsafeMutableRawPointer!)
  • Undocumented

    Declaration

    Objective-C

    - (void)OpenURLAsync: (NSString *)url cache_file:  (NSString *)cache_file password:  (NSString *)password options:  (PTHTTPRequestOptions*)options;

    Swift

    func openURLAsync(_ url: String!, cache_file: String!, password: String!, options: PTHTTPRequestOptions!)
  • Undocumented

    Declaration

    Objective-C

    - (void)SetRightToLeftLanguage: (BOOL)flag;

    Swift

    func setRightToLeftLanguage(_ flag: Bool)
  • Undocumented

    Declaration

    Objective-C

    - (void)PushViewingStates;

    Swift

    func pushViewingStates()
  • Undocumented

    Declaration

    Objective-C

    - (void)PopViewingStates: (BOOL)restore;

    Swift

    func popViewingStates(_ restore: Bool)
  • Undocumented

    Declaration

    Objective-C

    - (void)SetFreezeTile: (BOOL)freeze;

    Swift

    func setFreezeTile(_ freeze: Bool)
  • Undocumented

    Declaration

    Objective-C

    - (int)GetCurCanvasId;

    Swift

    func getCurCanvasId() -> Int32
  • Undocumented

    Declaration

    Objective-C

    - (void)GetPageRects: (PTPDFRect*)rect page_rects_info:  (NSMutableArray*)page_rects_info;

    Swift

    func getPageRects(_ rect: PTPDFRect!, page_rects_info: NSMutableArray!)
  • Undocumented

    Declaration

    Objective-C

    - (void)GetPageRectsOnCanvas: (NSMutableArray*)page_rects_info canvasNumber:  (int)canvasNumber;

    Swift

    func getPageRects(onCanvas page_rects_info: NSMutableArray!, canvasNumber: Int32)
  • Undocumented

    Declaration

    Objective-C

    - (double)GetRefZoomForPage: (PTPageViewMode)viewMode pageNum:  (int)pageNum;

    Swift

    func getRefZoom(forPage viewMode: PTPageViewMode, pageNum: Int32) -> Double
  • Undocumented

    Declaration

    Objective-C

    - (void)DoProgressiveRender;

    Swift

    func doProgressiveRender()
  • Undocumented

    Declaration

    Objective-C

    - (int)GetCellSideLength;

    Swift

    func getCellSideLength() -> Int32
  • Undocumented

    Declaration

    Objective-C

    - (double)GetPageVGap;

    Swift

    func getPageVGap() -> Double
  • Undocumented

    Declaration

    Objective-C

    - (double)GetPageHGap;

    Swift

    func getPageHGap() -> Double
  • Undocumented

    Declaration

    Objective-C

    - (void)RequestRender;

    Swift

    func requestRender()
  • Undocumented

    Declaration

    Objective-C

    - (void)PurgeMemory;

    Swift

    func purgeMemory()
  • Undocumented

    Declaration

    Objective-C

    - (void)SetMemInfo: (double)total_mem mem_cap:  (double)mem_cap;

    Swift

    func setMemInfo(_ total_mem: Double, mem_cap: Double)
  • Undocumented

    Declaration

    Objective-C

    - (void)SetWrapperAnnotBitmapProc: (PTCallback*)instance mode:  (PTAnnotVectorMode)mode;

    Swift

    func setWrapperAnnotBitmapProc(_ instance: PTCallback!, mode: PTAnnotVectorMode)
  • Undocumented

    Declaration

    Objective-C

    - (void)SetWrapperCreateTileProc: (PTCallback*)instance;

    Swift

    func setWrapperCreateTileProc(_ instance: PTCallback!)
  • Undocumented

    Declaration

    Objective-C

    - (void)SetWrapperDeluxeCreateTileProc: (PTCallback*)instance;

    Swift

    func setWrapperDeluxeCreateTileProc(_ instance: PTCallback!)
  • Undocumented

    Declaration

    Objective-C

    - (void)SetWrapperRemoveTileProc: (PTCallback*)instance;

    Swift

    func setWrapperRemoveTileProc(_ instance: PTCallback!)
  • Undocumented

    Declaration

    Objective-C

    - (void)SetPartDownloadedProc: (PTCallback*)instance;

    Swift

    func setPartDownloadedProc(_ instance: PTCallback!)