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147 lines
3.6 KiB
147 lines
3.6 KiB
/* PageTransition.h
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* Copyright (C) 2005, Net Integration Technologies, Inc.
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* Copyright (C) 2005, Brad Hards <bradh@frogmouth.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef __PAGETRANSITION_X_H__
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#define __PAGETRANSITION_X_H__
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namespace Poppler {
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class PageTransitionParams;
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class PageTransitionData;
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/**
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\brief Describes how a PDF file viewer shall perform the transition
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from one page to another
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In PDF files there is a way to specify if the viewer shall use
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certain effects to perform the transition from one page to
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another. This feature can be used, e.g., in a PDF-based beamer
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presentation.
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This utility class represents the transition effect, and can be
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used to extract the information from a PDF object.
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*/
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class PageTransition {
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public:
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/** \brief transition effect that shall be used
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*/
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// if changed remember to keep in sync with PageTransition.h enum
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enum Type {
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Replace = 0,
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Split,
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Blinds,
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Box,
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Wipe,
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Dissolve,
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Glitter,
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Fly,
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Push,
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Cover,
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Uncover,
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Fade
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};
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/** \brief alignment of the transition effect that shall be used
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*/
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// if changed remember to keep in sync with PageTransition.h enum
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enum Alignment {
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Horizontal = 0,
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Vertical
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};
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/** \brief direction of the transition effect that shall be used
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*/
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// if changed remember to keep in sync with PageTransition.h enum
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enum Direction {
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Inward = 0,
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Outward
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};
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/** \brief Construct a new PageTransition object from a page dictionary.
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Users of the library will rarely need to construct a
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PageTransition object themselves. Instead, the method
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Poppler::Page::transition() can be used to find out if a certain
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transition effect is specified.
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@warning In case or error, this method will print an error message to stderr,
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and construct a default object.
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@param params an object whose dictionary will be read and
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parsed. This must be a valid object, whose dictionaries are
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accessed by the constructor. The object is only accessed by this
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constructor, and may be deleted after the constructor returns.
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*/
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PageTransition(const PageTransitionParams ¶ms);
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/** \brief copy constructor */
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PageTransition(const PageTransition &pt);
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/**
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Destructor
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*/
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~PageTransition();
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/**
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\brief Get type of the transition.
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*/
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Type type() const;
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/**
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\brief Get duration of the transition in seconds.
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*/
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int duration() const;
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/**
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\brief Get dimension in which the transition effect occurs.
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*/
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Alignment alignment() const;
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/**
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\brief Get direction of motion of the transition effect.
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*/
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Direction direction() const;
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/**
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\brief Get direction in which the transition effect moves.
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*/
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int angle() const;
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/**
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\brief Get starting or ending scale.
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*/
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double scale() const;
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/**
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\brief Returns true if the area to be flown is rectangular and
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opaque.
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*/
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bool isRectangular() const;
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private:
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PageTransitionData *data;
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};
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}
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#endif
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