#include <poppler-qt6.h>

Public Types
enum	Orientation { Landscape , Portrait , Seascape , UpsideDown }

enum	PageAction { Opening , Closing }

enum	PainterFlag { NoPainterFlags = 0x00000000 , DontSaveAndRestore = 0x00000001 }

using	RenderToImagePartialUpdateFunc = void(*)(const QImage &, const QVariant &)

enum	Rotation { Rotate0 = 0 , Rotate90 = 1 , Rotate180 = 2 , Rotate270 = 3 }

enum	SearchDirection { FromTop , NextResult , PreviousResult }

enum	SearchFlag { NoSearchFlags = 0x00000000 , IgnoreCase = 0x00000001 , WholeWords = 0x00000002 , IgnoreDiacritics = 0x00000004 , AcrossLines = 0x00000008 }

enum	SearchMode { CaseSensitive , CaseInsensitive }

using	ShouldAbortQueryFunc = bool(*)(const QVariant &)

using	ShouldRenderToImagePartialQueryFunc = bool(*)(const QVariant &)

enum	TextLayout { PhysicalLayout , RawOrderLayout }

Public Member Functions
std::unique_ptr< Link >	action (PageAction act) const

void	addAnnotation (const Annotation *ann)

std::vector< std::unique_ptr< Annotation > >	annotations () const

std::vector< std::unique_ptr< Annotation > >	annotations (const QSet< Annotation::SubType > &subtypes) const

void	defaultCTM (double *CTM, double dpiX, double dpiY, int rotate, bool upsideDown)

double	duration () const

std::vector< std::unique_ptr< FormField > >	formFields () const

int	index () const

QString	label () const

std::vector< std::unique_ptr< Link > >	links () const

Orientation	orientation () const

QSize	pageSize () const

QSizeF	pageSizeF () const

void	removeAnnotation (const Annotation *ann)

QImage	renderToImage (double xres, double yres, int x, int y, int w, int h, Rotation rotate, RenderToImagePartialUpdateFunc partialUpdateCallback, ShouldRenderToImagePartialQueryFunc shouldDoPartialUpdateCallback, const QVariant &payload) const

QImage	renderToImage (double xres, double yres, int x, int y, int w, int h, Rotation rotate, RenderToImagePartialUpdateFunc partialUpdateCallback, ShouldRenderToImagePartialQueryFunc shouldDoPartialUpdateCallback, ShouldAbortQueryFunc shouldAbortRenderCallback, const QVariant &payload) const

QImage	renderToImage (double xres=72.0, double yres=72.0, int x=-1, int y=-1, int w=-1, int h=-1, Rotation rotate=Rotate0) const

bool	renderToPainter (QPainter *painter, double xres=72.0, double yres=72.0, int x=-1, int y=-1, int w=-1, int h=-1, Rotation rotate=Rotate0, PainterFlags flags=NoPainterFlags) const

bool	search (const QString &text, double &sLeft, double &sTop, double &sRight, double &sBottom, SearchDirection direction, SearchFlags flags=NoSearchFlags, Rotation rotate=Rotate0) const

QList< QRectF >	search (const QString &text, SearchFlags flags=NoSearchFlags, Rotation rotate=Rotate0) const

QString	text (const QRectF &rect) const

QString	text (const QRectF &rect, TextLayout textLayout) const

std::vector< std::unique_ptr< TextBox > >	textList (Rotation rotate, ShouldAbortQueryFunc shouldAbortExtractionCallback, const QVariant &closure) const

std::vector< std::unique_ptr< TextBox > >	textList (Rotation rotate=Rotate0) const

QImage	thumbnail () const

PageTransition *	transition () const

	~Page ()

Detailed Description

A page in a document.

The Page class represents a single page within a PDF document.

You cannot construct a Page directly, but you have to use the Document functions that return a new Page out of an index or a label.

Member Typedef Documentation

◆ RenderToImagePartialUpdateFunc

using Poppler::Page::RenderToImagePartialUpdateFunc = void (*)(const QImage & , const QVariant & )

Partial Update renderToImage callback.

This function type is used for doing partial rendering updates; the first parameter is the image as rendered up to now, the second is the unaltered closure argument which was passed to the renderToImage call.

◆ ShouldAbortQueryFunc

using Poppler::Page::ShouldAbortQueryFunc = bool (*)(const QVariant & )

Abort query function callback.

This function type is used for query if the current rendering/text extraction should be cancelled.

◆ ShouldRenderToImagePartialQueryFunc

using Poppler::Page::ShouldRenderToImagePartialQueryFunc = bool (*)(const QVariant & )

Partial Update query renderToImage callback.

This function type is used for query if the partial rendering update should happen; the parameter is the unaltered closure argument which was passed to the renderToImage call.

Member Enumeration Documentation

◆ Orientation

enum Poppler::Page::Orientation

Types of orientations that are possible.

Enumerator
Landscape	Landscape orientation (portrait, with 90 degrees clockwise rotation )
Portrait	Normal portrait orientation.
Seascape	Seascape orientation (portrait, with 270 degrees clockwise rotation)
UpsideDown	Upside down orientation (portrait, with 180 degrees rotation)

◆ PageAction

enum Poppler::Page::PageAction

The kinds of page actions.

Enumerator
Opening	The action when a page is "opened".
Closing	The action when a page is "closed".

◆ PainterFlag

enum Poppler::Page::PainterFlag

Additional flags for the renderToPainter method.

Enumerator

DontSaveAndRestore

Do not save/restore the caller-owned painter.

renderToPainter() by default preserves, using save() + restore(), the state of the painter specified; if this is not needed, this flag can avoid this job

◆ Rotation

enum Poppler::Page::Rotation

The type of rotation to apply for an operation.

Enumerator
Rotate0	Do not rotate.
Rotate90	Rotate 90 degrees clockwise.
Rotate180	Rotate 180 degrees.
Rotate270	Rotate 270 degrees clockwise (90 degrees counterclockwise)

◆ SearchDirection

enum Poppler::Page::SearchDirection

The starting point for a search.

Enumerator
FromTop	Start sorting at the top of the document.
NextResult	Find the next result, moving "down the page".
PreviousResult	Find the previous result, moving "up the page".

◆ SearchFlag

enum Poppler::Page::SearchFlag

Flags to modify the search behaviour.

Enumerator
IgnoreCase	Case differences are ignored.
WholeWords	Only whole words are matched.
IgnoreDiacritics	Diacritic differences (eg. accents, umlauts, diaeresis) are ignored. This option will have no effect if the search term contains characters which are not pure ascii.
AcrossLines	Allows to match on text spanning from end of a line to the next line. It won't match on text spanning more than two lines. Automatically ignores hyphen at end of line, and allows whitespace in search term to match on newline. Since 21.05.0

◆ SearchMode

enum Poppler::Page::SearchMode

The type of search to perform.

Enumerator
CaseSensitive	Case differences cause no match in searching.
CaseInsensitive	Case differences are ignored in matching.

◆ TextLayout

enum Poppler::Page::TextLayout

How the text is going to be returned.

Enumerator
PhysicalLayout	The text is layouted to resemble the real page layout.
RawOrderLayout	The text is returned without any type of processing.

Member Function Documentation

◆ addAnnotation()

void Poppler::Page::addAnnotation ( const Annotation * ann )

Adds an annotation to the page.

Note: Ownership of the annotation object stays with the caller, who can delete it at any time.

◆ annotations() [1/2]

std::vector< std::unique_ptr< Annotation > > Poppler::Page::annotations ( ) const

Returns the annotations of the page.

Note: If you call this method twice, you get different objects pointing to the same annotations (see Annotation).

◆ annotations() [2/2]

std::vector< std::unique_ptr< Annotation > > Poppler::Page::annotations ( const QSet< Annotation::SubType > & subtypes ) const

Returns the annotations of the page.

Parameters

subtypes the subtypes of annotations you are interested in

Note: If you call this method twice, you get different objects pointing to the same annotations (see Annotation).

◆ duration()

double Poppler::Page::duration ( ) const

Returns the page duration.

That is the time, in seconds, that the page should be displayed before the presentation automatically advances to the next page. Returns < 0 if duration is not set.

◆ pageSize()

QSize Poppler::Page::pageSize ( ) const

Returns: The dimensions (cropbox) of the page, in points (i.e. 1/72th of an inch)

◆ pageSizeF()

QSizeF Poppler::Page::pageSizeF ( ) const

Returns: The dimensions (cropbox) of the page, in points (i.e. 1/72th of an inch)

◆ removeAnnotation()

void Poppler::Page::removeAnnotation ( const Annotation * ann )

Removes an annotation from the page and destroys the annotation object.

Note: There mustn't be other Annotation objects pointing this annotation

◆ renderToImage() [1/3]

QImage Poppler::Page::renderToImage	(	double	xres,
		double	yres,
		int	x,
		int	y,
		int	w,
		int	h,
		Rotation	rotate,
		RenderToImagePartialUpdateFunc	partialUpdateCallback,
		ShouldRenderToImagePartialQueryFunc	shouldDoPartialUpdateCallback,
		const QVariant &	payload
	)		const

Render the page to a QImage using the current Document renderer.

If x = y = w = h = -1, the method will automatically compute the size of the image from the horizontal and vertical resolutions specified in xres and yres. Otherwise, the method renders only a part of the page, specified by the parameters (x, y, w, h) in pixel coordinates. The returned QImage then has size (w, h), independent of the page size.

Parameters

x	specifies the left x-coordinate of the box, in pixels.
y	specifies the top y-coordinate of the box, in pixels.
w	specifies the width of the box, in pixels.
h	specifies the height of the box, in pixels.
xres	horizontal resolution of the graphics device, in dots per inch
yres	vertical resolution of the graphics device, in dots per inch
rotate	how to rotate the page
partialUpdateCallback	callback that will be called to report a partial rendering update
shouldDoPartialUpdateCallback	callback that will be called to ask if a partial rendering update is wanted. This exists because doing a partial rendering update needs to copy the image buffer so if it is not wanted it is better skipped early.
payload	opaque structure that will be passed back to partialUpdateCallback and shouldDoPartialUpdateCallback.

Warning: The parameter (x, y, w, h) are not well-tested. Unusual or meaningless parameters may lead to rather unexpected results.

Returns: a QImage of the page, or a null image on failure.

◆ renderToImage() [2/3]

QImage Poppler::Page::renderToImage	(	double	xres,
		double	yres,
		int	x,
		int	y,
		int	w,
		int	h,
		Rotation	rotate,
		RenderToImagePartialUpdateFunc	partialUpdateCallback,
		ShouldRenderToImagePartialQueryFunc	shouldDoPartialUpdateCallback,
		ShouldAbortQueryFunc	shouldAbortRenderCallback,
		const QVariant &	payload
	)		const

Render the page to a QImage using the current Document renderer.

If x = y = w = h = -1, the method will automatically compute the size of the image from the horizontal and vertical resolutions specified in xres and yres. Otherwise, the method renders only a part of the page, specified by the parameters (x, y, w, h) in pixel coordinates. The returned QImage then has size (w, h), independent of the page size.

Parameters

x	specifies the left x-coordinate of the box, in pixels.
y	specifies the top y-coordinate of the box, in pixels.
w	specifies the width of the box, in pixels.
h	specifies the height of the box, in pixels.
xres	horizontal resolution of the graphics device, in dots per inch
yres	vertical resolution of the graphics device, in dots per inch
rotate	how to rotate the page
partialUpdateCallback	callback that will be called to report a partial rendering update
shouldDoPartialUpdateCallback	callback that will be called to ask if a partial rendering update is wanted. This exists because doing a partial rendering update needs to copy the image buffer so if it is not wanted it is better skipped early.
shouldAbortRenderCallback	callback that will be called to ask if the rendering should be cancelled.
payload	opaque structure that will be passed back to partialUpdateCallback, shouldDoPartialUpdateCallback and shouldAbortRenderCallback.

Warning: The parameter (x, y, w, h) are not well-tested. Unusual or meaningless parameters may lead to rather unexpected results.

Returns: a QImage of the page, or a null image on failure.

◆ renderToImage() [3/3]

QImage Poppler::Page::renderToImage	(	double	xres = `72.0`,
		double	yres = `72.0`,
		int	x = `-1`,
		int	y = `-1`,
		int	w = `-1`,
		int	h = `-1`,
		Rotation	rotate = `Rotate0`
	)		const

Render the page to a QImage using the current Document renderer.

If x = y = w = h = -1, the method will automatically compute the size of the image from the horizontal and vertical resolutions specified in xres and yres. Otherwise, the method renders only a part of the page, specified by the parameters (x, y, w, h) in pixel coordinates. The returned QImage then has size (w, h), independent of the page size.

Parameters

x	specifies the left x-coordinate of the box, in pixels.
y	specifies the top y-coordinate of the box, in pixels.
w	specifies the width of the box, in pixels.
h	specifies the height of the box, in pixels.
xres	horizontal resolution of the graphics device, in dots per inch
yres	vertical resolution of the graphics device, in dots per inch
rotate	how to rotate the page

Warning: The parameter (x, y, w, h) are not well-tested. Unusual or meaningless parameters may lead to rather unexpected results.

Returns: a QImage of the page, or a null image on failure.

◆ renderToPainter()

bool Poppler::Page::renderToPainter	(	QPainter *	painter,
		double	xres = `72.0`,
		double	yres = `72.0`,
		int	x = `-1`,
		int	y = `-1`,
		int	w = `-1`,
		int	h = `-1`,
		Rotation	rotate = `Rotate0`,
		PainterFlags	flags = `NoPainterFlags`
	)		const

Render the page to the specified QPainter using the current Document renderer.

If x = y = w = h = -1, the method will automatically compute the size of the page area from the horizontal and vertical resolutions specified in xres and yres. Otherwise, the method renders only a part of the page, specified by the parameters (x, y, w, h) in pixel coordinates.

Parameters

painter	the painter to paint on
x	specifies the left x-coordinate of the box, in pixels.
y	specifies the top y-coordinate of the box, in pixels.
w	specifies the width of the box, in pixels.
h	specifies the height of the box, in pixels.
xres	horizontal resolution of the graphics device, in dots per inch
yres	vertical resolution of the graphics device, in dots per inch
rotate	how to rotate the page
flags	additional painter flags

Warning: The parameter (x, y, w, h) are not well-tested. Unusual or meaningless parameters may lead to rather unexpected results.

Returns: whether the painting succeeded

Note: This method is only supported for the QPainterOutputDev

◆ search() [1/2]

bool Poppler::Page::search	(	const QString &	text,
		double &	sLeft,
		double &	sTop,
		double &	sRight,
		double &	sBottom,
		SearchDirection	direction,
		SearchFlags	flags = `NoSearchFlags`,
		Rotation	rotate = `Rotate0`
	)		const

Returns true if the specified text was found.

Parameters

text	the text the search
rectXXX	in all directions is used to return where the text was found, for NextResult and PreviousResult indicates where to continue searching for
direction	in which direction do the search
flags	the flags to consider during matching
rotate	the rotation to apply for the search order

◆ search() [2/2]

QList< QRectF > Poppler::Page::search	(	const QString &	text,
		SearchFlags	flags = `NoSearchFlags`,
		Rotation	rotate = `Rotate0`
	)		const

Returns a list of all occurrences of the specified text on the page.

if SearchFlags::AcrossLines is given in

Parameters

flags,then	rects may just be parts of the text itself if it's split between multiple lines.
text	the text to search
flags	the flags to consider during matching
rotate	the rotation to apply for the search order

Warning: Do not use the returned QRectF as arguments of another search call because of truncation issues if qreal is defined as float.

◆ text() [1/2]

QString Poppler::Page::text ( const QRectF & rect ) const

Returns the text that is inside a specified rectangle.

The text is returned using the physical layout of the page

Parameters

rect	the rectangle specifying the area of interest, with coordinates given in points, i.e., 1/72th of an inch. If rect is null, all text on the page is given

◆ text() [2/2]

QString Poppler::Page::text	(	const QRectF &	rect,
		TextLayout	textLayout
	)		const

Returns the text that is inside a specified rectangle.

Parameters

rect	the rectangle specifying the area of interest, with coordinates given in points, i.e., 1/72th of an inch. If rect is null, all text on the page is given

◆ textList() [1/2]

std::vector< std::unique_ptr< TextBox > > Poppler::Page::textList	(	Rotation	rotate,
		ShouldAbortQueryFunc	shouldAbortExtractionCallback,
		const QVariant &	closure
	)		const

Returns a list of text of the page.

This method returns a QList of TextBoxes that contain all the text of the page, with roughly one text word of text per TextBox item.

For text written in western languages (left-to-right and up-to-down), the QList contains the text in the proper order.

Parameters

shouldAbortExtractionCallback	callback that will be called to ask if the text extraction should be cancelled.
closure	opaque structure that will be passed back to shouldAbortExtractionCallback.

Warning: This method is not tested with Asian scripts

◆ textList() [2/2]

std::vector< std::unique_ptr< TextBox > > Poppler::Page::textList ( Rotation rotate = Rotate0 ) const

Returns a list of text of the page.

This method returns a QList of TextBoxes that contain all the text of the page, with roughly one text word of text per TextBox item.

For text written in western languages (left-to-right and up-to-down), the QList contains the text in the proper order.

Warning: This method is not tested with Asian scripts

◆ thumbnail()

QImage Poppler::Page::thumbnail ( ) const

Get the page thumbnail if it exists.

Returns: a QImage of the thumbnail, or a null image if the PDF does not contain one for this page

◆ transition()

PageTransition * Poppler::Page::transition ( ) const

Returns the transition of this page.

Returns: a pointer to a PageTransition structure that defines how transition to this page shall be performed.

Note: The PageTransition structure is owned by this page, and will automatically be destroyed when this page class is destroyed.

The documentation for this class was generated from the following file:

poppler-qt6.h

Public Types

Public Member Functions

Detailed Description

Member Typedef Documentation

◆ RenderToImagePartialUpdateFunc

◆ ShouldAbortQueryFunc

◆ ShouldRenderToImagePartialQueryFunc

Member Enumeration Documentation

◆ Orientation

◆ PageAction

◆ PainterFlag

◆ Rotation

◆ SearchDirection

◆ SearchFlag

◆ SearchMode

◆ TextLayout

Member Function Documentation

◆ addAnnotation()

◆ annotations() [1/2]

◆ annotations() [2/2]

◆ duration()

◆ pageSize()

◆ pageSizeF()

◆ removeAnnotation()

◆ renderToImage() [1/3]

◆ renderToImage() [2/3]

◆ renderToImage() [3/3]

◆ renderToPainter()

◆ search() [1/2]

◆ search() [2/2]

◆ text() [1/2]

◆ text() [2/2]

◆ textList() [1/2]

◆ textList() [2/2]

◆ thumbnail()

◆ transition()