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Diffstat (limited to 'sdext/source/presenter/PresenterTextView.hxx')
| -rw-r--r-- | sdext/source/presenter/PresenterTextView.hxx | 322 |
1 files changed, 322 insertions, 0 deletions
diff --git a/sdext/source/presenter/PresenterTextView.hxx b/sdext/source/presenter/PresenterTextView.hxx new file mode 100644 index 000000000000..d8bf260443c1 --- /dev/null +++ b/sdext/source/presenter/PresenterTextView.hxx @@ -0,0 +1,322 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +#ifndef SDEXT_PRESENTER_TEXT_VIEW_HXX +#define SDEXT_PRESENTER_TEXT_VIEW_HXX + +#include "PresenterTheme.hxx" +#include <com/sun/star/accessibility/XAccessibleText.hpp> +#include <com/sun/star/awt/Size.hpp> +#include <com/sun/star/geometry/RealPoint2D.hpp> +#include <com/sun/star/geometry/RealSize2D.hpp> +#include <com/sun/star/i18n/XBreakIterator.hpp> +#include <com/sun/star/i18n/XScriptTypeDetector.hpp> +#include <com/sun/star/rendering/XCanvas.hpp> +#include <com/sun/star/style/ParagraphAdjust.hpp> +#include <com/sun/star/text/XText.hpp> +#include <com/sun/star/uno/XComponentContext.hpp> +#include <cppuhelper/compbase1.hxx> +#include <cppuhelper/basemutex.hxx> + +namespace css = ::com::sun::star; +namespace cssu = ::com::sun::star::uno; +namespace cssa = ::com::sun::star::accessibility; + +namespace sdext { namespace presenter { + +class PresenterTextCaret +{ +public: + PresenterTextCaret ( + const ::boost::function<css::awt::Rectangle(const sal_Int32,const sal_Int32)>& + rCharacterBoundsAccess, + const ::boost::function<void(const css::awt::Rectangle&)>& + rInvalidator); + ~PresenterTextCaret (void); + + void ShowCaret (void); + void HideCaret (void); + + sal_Int32 GetParagraphIndex (void) const; + sal_Int32 GetCharacterIndex (void) const; + void SetPosition ( + const sal_Int32 nParagraphIndex, + const sal_Int32 nCharacterIndex); + + bool IsVisible (void) const; + + /** Set a (possibly empty) functor that broadcasts changes of the caret + position. This is used when a PresenterTextView object is set at + the accessibility object so that accessibility events can be sent + when the caret changes position. + */ + void SetCaretMotionBroadcaster ( + const ::boost::function<void(sal_Int32,sal_Int32,sal_Int32,sal_Int32)>& rBroadcaster); + + css::awt::Rectangle GetBounds (void) const; + +private: + sal_Int32 mnParagraphIndex; + sal_Int32 mnCharacterIndex; + sal_Int32 mnCaretBlinkTaskId; + bool mbIsCaretVisible; + const ::boost::function<css::awt::Rectangle(const sal_Int32,const sal_Int32)> maCharacterBoundsAccess; + const ::boost::function<void(const css::awt::Rectangle&)> maInvalidator; + ::boost::function<void(sal_Int32,sal_Int32,sal_Int32,sal_Int32)> maBroadcaster; + css::awt::Rectangle maCaretBounds; + + void InvertCaret (void); +}; +typedef ::boost::shared_ptr<PresenterTextCaret> SharedPresenterTextCaret; + + + + +//===== PresenterTextParagraph ================================================ + +class PresenterTextParagraph +{ +public: + PresenterTextParagraph ( + const sal_Int32 nParagraphIndex, + const cssu::Reference<css::i18n::XBreakIterator>& rxBreakIterator, + const cssu::Reference<css::i18n::XScriptTypeDetector>& rxScriptTypeDetector, + const cssu::Reference<css::text::XTextRange>& rxTextRange, + const SharedPresenterTextCaret& rpCaret); + PresenterTextParagraph ( + const sal_Int32 nParagraphIndex, + const cssu::Reference<css::i18n::XBreakIterator>& rxBreakIterator, + const cssu::Reference<css::i18n::XScriptTypeDetector>& rxScriptTypeDetector, + const ::rtl::OUString& rsText, + const SharedPresenterTextCaret& rpCaret); + + void Paint ( + const cssu::Reference<css::rendering::XCanvas>& rxCanvas, + const css::geometry::RealSize2D& rSize, + const PresenterTheme::SharedFontDescriptor& rpFont, + const css::rendering::ViewState& rViewState, + css::rendering::RenderState& rRenderState, + const double nTopOffset, + const double nClipTop, + const double nClipBottom); + + sal_Int32 GetParagraphIndex (void) const; + double GetTotalTextHeight (void); + + sal_Int32 GetCharacterOffset (void) const; + void SetCharacterOffset (const sal_Int32 nCharacterOffset); + sal_Int32 GetCharacterCount (void) const; + sal_Unicode GetCharacter (const sal_Int32 nGlobalCharacterIndex) const; + ::rtl::OUString GetText (void) const; + cssa::TextSegment GetTextSegment ( + const sal_Int32 nOffset, + const sal_Int32 nGlobalCharacterIndex, + const sal_Int16 nTextType) const; + cssa::TextSegment GetWordTextSegment ( + const sal_Int32 nOffset, + const sal_Int32 nIndex) const; + cssa::TextSegment CreateTextSegment ( + sal_Int32 nStartIndex, + sal_Int32 nEndIndex) const; + css::awt::Rectangle GetCharacterBounds ( + sal_Int32 nGlobalCharacterIndex, + const bool bCaretBox); + sal_Int32 GetIndexAtPoint (const css::awt::Point& rPoint) const; + void SetupCellArray ( + const PresenterTheme::SharedFontDescriptor& rpFont); + void Format ( + const double nY, + const double nWidth, + const PresenterTheme::SharedFontDescriptor& rpFont); + sal_Int32 GetWordBoundary( + const sal_Int32 nLocalCharacterIndex, + const sal_Int32 nDistance); + sal_Int32 GetCaretPosition (void) const; + void SetCaretPosition (const sal_Int32 nPosition) const; + void SetOrigin (const double nXOrigin, const double nYOrigin); + css::awt::Point GetRelativeLocation (void) const; + css::awt::Size GetSize (void); + +private: + ::rtl::OUString msParagraphText; + const sal_Int32 mnParagraphIndex; + SharedPresenterTextCaret mpCaret; + + /** A portion of a string that encodes one unicode cell. It describes + number of characters in the unicode string that make up the cell and its + width in pixel (with respect to some configuration that is stored + externally or implicitly). + */ + class Cell + { + public: + Cell (const sal_Int32 nCharacterIndex, const sal_Int32 nCharacterCount, const double nCellWidth); + sal_Int32 mnCharacterIndex; + sal_Int32 mnCharacterCount; + double mnCellWidth; + }; + + class Line + { + public: + Line (const sal_Int32 nLineStartCharacterIndex, const sal_Int32 nLineEndCharacterIndex); + sal_Int32 mnLineStartCharacterIndex; + sal_Int32 mnLineEndCharacterIndex; + sal_Int32 mnLineStartCellIndex; + sal_Int32 mnLineEndCellIndex; + cssu::Reference<css::rendering::XTextLayout> mxLayoutedLine; + double mnBaseLine; + double mnWidth; + cssu::Sequence<css::geometry::RealRectangle2D> maCellBoxes; + + sal_Int32 GetLength (void) const; + void ProvideLayoutedLine ( + const ::rtl::OUString& rsParagraphText, + const PresenterTheme::SharedFontDescriptor& rpFont, + const sal_Int8 nTextDirection); + void ProvideCellBoxes (void); + bool IsEmpty (void) const; + }; + + + cssu::Reference<css::i18n::XBreakIterator> mxBreakIterator; + cssu::Reference<css::i18n::XScriptTypeDetector> mxScriptTypeDetector; + ::std::vector<Line> maLines; + ::std::vector<sal_Int32> maWordBoundaries; + // Offset of the top of the paragraph with respect to the origin of the + // whole text (specified by mnXOrigin and mnYOrigin). + double mnVerticalOffset; + double mnXOrigin; + double mnYOrigin; + double mnWidth; + double mnAscent; + double mnDescent; + double mnLineHeight; + css::style::ParagraphAdjust meAdjust; + sal_Int8 mnWritingMode; + /// The index of the first character in this paragraph with respect to + /// the whole text. + sal_Int32 mnCharacterOffset; + ::std::vector<Cell> maCells; + + void AddWord ( + const double nWidth, + css::i18n::Boundary& rCurrentLine, + const sal_Int32 nWordBoundary, + const PresenterTheme::SharedFontDescriptor& rpFont); + void AddLine ( + css::i18n::Boundary& rCurrentLine); + sal_Int8 GetTextDirection (void) const; + bool IsTextReferencePointLeft (void) const; +}; +typedef ::boost::shared_ptr<PresenterTextParagraph> SharedPresenterTextParagraph; + + + + +/** A simple text view that paints text onto a given canvas. +*/ +class PresenterTextView +{ +public: + + PresenterTextView ( + const css::uno::Reference<css::uno::XComponentContext>& rxContext, + const css::uno::Reference<css::rendering::XCanvas>& rxCanvas, + const ::boost::function<void(const ::css::awt::Rectangle&)>& rInvalidator); + /** Create a new instance that does no output but only provides + geometric information to an accessibility object. + */ + PresenterTextView ( + const css::uno::Reference<css::uno::XComponentContext>& rxContext, + const css::uno::Reference<css::rendering::XCanvas>& rxCanvas); + + void SetText (const css::uno::Reference<css::text::XText>& rxText); + void SetText (const ::rtl::OUString& rsText); + void SetTextChangeBroadcaster (const ::boost::function<void(void)>& rBroadcaster); + + void SetLocation (const css::geometry::RealPoint2D& rLocation); + void SetSize (const css::geometry::RealSize2D& rSize); + double GetTotalTextHeight (void); + + void SetFont (const PresenterTheme::SharedFontDescriptor& rpFont); + + void SetOffset ( + const double nLeft, + const double nTop); + + /** Move the caret forward or backward by character or by word. + @param nDistance + Should be either -1 or +1 to move caret backwards or forwards, + respectively. + @param nTextType + Valid values are the + com::sun::star::accessibility::AccessibleTextType constants. + */ + void MoveCaret ( + const sal_Int32 nDistance, + const sal_Int16 nTextType); + + void Paint (const css::awt::Rectangle& rUpdateBox); + + SharedPresenterTextCaret GetCaret (void) const; + + sal_Int32 GetParagraphCount (void) const; + SharedPresenterTextParagraph GetParagraph (const sal_Int32 nParagraphIndex) const; + +private: + css::uno::Reference<css::rendering::XCanvas> mxCanvas; + bool mbDoOuput; + css::uno::Reference<css::i18n::XBreakIterator> mxBreakIterator; + css::uno::Reference<css::i18n::XScriptTypeDetector> mxScriptTypeDetector; + css::geometry::RealPoint2D maLocation; + css::geometry::RealSize2D maSize; + PresenterTheme::SharedFontDescriptor mpFont; + ::std::vector<SharedPresenterTextParagraph> maParagraphs; + SharedPresenterTextCaret mpCaret; + double mnLeftOffset; + double mnTopOffset; + const ::boost::function<void(const ::css::awt::Rectangle&)> maInvalidator; + bool mbIsFormatPending; + sal_Int32 mnCharacterCount; + ::boost::function<void(void)> maTextChangeBroadcaster; + + void RequestFormat (void); + void Format (void); + SharedPresenterTextParagraph GetParagraphForCharacterIndex (const sal_Int32 nCharacterIndex) const; + sal_Int32 GetCharacterOffset (const sal_Int32 nParagraphIndex) const; + css::awt::Rectangle GetCaretBounds ( + const sal_Int32 nParagraphIndex, + const sal_Int32 nCharacterIndex) const; +}; + +} } // end of namespace ::sdext::presenter + +#endif + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |