author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 11 May 2010 17:53:33 +0300 | |
branch | RCL_3 |
changeset 7 | 1799ab513ec3 |
parent 0 | 1fb32624e06b |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: |
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* The specification of a linked typeface passed from font store to a rasterizer. |
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* |
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*/ |
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#ifndef OPENFONTLINKEDTYPEFACESPECIFICATION_H_ |
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#define OPENFONTLINKEDTYPEFACESPECIFICATION_H_ |
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class COpenFontLinkedTypefaceElementSpec; |
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class CLinkedTypefaceGroup; |
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class TLinkedTypefaceSpecificationArgs; |
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/** |
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This class contains the specification of a linked typeface passed from font store to a rasterizer. It is made up of groups and typefaces. |
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A group (CLinkedTypefaceGroup) contains a number of attributes that can apply to similar typefaces |
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within the linked typeface. One or more typeface may belong to a group. Typefaces (COpenFontLinkedTypefaceElementSpec) |
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specifiy which typefaces are used within this linked font. |
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After creation, the linked typeface can be used as if it were any other typeface. This assumes that there |
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is a rasteriser that supports this feature available. When looking up characters the first typeface containing |
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the required character is used. |
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KMaxLinkedTypefaces and KMaxLinkedTypefaceGroups define the maximum number of typefaces and groups that can be |
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added to the specification. |
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@publishedPartner |
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@released |
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@see COpenFontLinkedTypefaceElementSpec |
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@see CLinkedTypefaceGroup |
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@see CLinkedTypefaceSpecification |
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@see CLinkedTypefaceElementSpec |
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*/ |
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NONSHARABLE_CLASS(COpenFontLinkedTypefaceSpecification) : public CBase |
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{ |
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public: |
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/** |
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This function constructs the linked typeface specification and places it on the CleanupStack. |
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@param aName The name of the linked typeface. This name should not be the same as an existing typeface. |
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@return CLinkedTypefaceSpecification* A linked typeface specification object |
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*/ |
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IMPORT_C static COpenFontLinkedTypefaceSpecification* NewLC(const TDesC& aName); |
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/** |
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Returns the name of this linked typeface |
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@return The name of this linked typeface |
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*/ |
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IMPORT_C TPtrC Name() const; |
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/** |
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Returns the number of typefaces that have been added to this specification |
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@return The number of typefaces that have been added to this specification |
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*/ |
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IMPORT_C TInt TypefaceCount() const; |
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/** |
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Returns the linked typeface at the specified index. |
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@return The linked typeface; NULL if there is no typeface at the specified index |
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@see COpenFontLinkedTypefaceSpecification::NumberOfTypefaces() |
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*/ |
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IMPORT_C COpenFontLinkedTypefaceElementSpec* Typeface(TInt aIndex) const; |
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/** |
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Returns the index of the canonical (metrics) typeface. |
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The can be retrieved by passing the index to Typeface(). |
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@return The index to the canonical typeface; KErrNoFound The canonical doesn't exist; KErrOverflow There is more than one canonical |
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@see COpenFontLinkedTypefaceSpecification::Typeface() |
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*/ |
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IMPORT_C TInt CanonicalIndex() const; |
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/** |
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Adds the supplied CLinkedTypefaceElementSpec to the Linked Typeface specification. |
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The element is placed at the specified index. Adding a canonical element will only be successful |
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if one has not already been added. The specification takes ownership of the element specification. |
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@param aElementSpec The specification to be added. |
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@param aIndex The position at which the element spec will be added. |
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@see CLinkedTypefaceSpecification::AddTypefaceAtBackL() |
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@see CLinkedTypefaceSpecification::RemoveTypeface() |
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@see KMaxLinkedTypefaces |
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@leave KErrArgument If the element is canonical and a canonical element already exists or if the group ID doesn't exist |
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@leave KErrNoMemory There was not enough memory available to perform this operation |
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@leave KErrOverflow The typeface specification is full; adding would exceed KMaxLinkedTypefaces |
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*/ |
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IMPORT_C void AddTypefaceAtIndexL(COpenFontLinkedTypefaceElementSpec& aElementSpec, TInt aIndex); |
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/** |
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Adds the supplied CLinkedTypefaceElementSpec to the Linked Typeface specification. |
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The element is placed at the back of the specification. Adding a canonical element will only be successful |
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if one has not already been added. The specification takes ownership of the element specification. |
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@param aElementSpec |
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@see CLinkedTypefaceSpecification::AddTypefaceAtIndexL() |
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@see CLinkedTypefaceSpecification::RemoveTypeface() |
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@see KMaxLinkedTypefaces |
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@leave KErrArgument If the element is canonical and a canonical element already exists or if the group ID doesn't exist |
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@leave KErrNoMemory There was not enough memory available to perform this operation |
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@leave KErrOverflow The typeface specification is full; adding would exceed KMaxLinkedTypefaces |
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*/ |
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IMPORT_C void AddTypefaceAtBackL(COpenFontLinkedTypefaceElementSpec& aElementSpec); |
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/** |
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Removes the element spec at the specified index from this specification. |
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This function deletes the element spec. If the element is the only one within its group |
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the group is also removed and deleted from the specification. |
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@param aIndex the index of the element spec to be removed |
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@return KErrNotFound If the index is negative or larger than the number of typeface elements or the element doesn't exist |
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*/ |
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IMPORT_C TInt RemoveTypeface(TInt aIndex); |
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/** |
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Adds the group specified to this specification |
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The specification takes ownership of the group if addition is successful. |
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@param aGroup The group to be added |
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@see COpenFontLinkedTypefaceSpecification::RemoveLinkedTypefaceGroup() |
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@leave KErrAlreadyExists A group with the same ID is already present in the specification |
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*/ |
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IMPORT_C void AddLinkedTypefaceGroupL(CLinkedTypefaceGroup& aGroup); |
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/** |
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This will remove the group and all the elements associated with it. |
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@param aGroupId The Id of the group to be removed |
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*/ |
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IMPORT_C TInt RemoveLinkedTypefaceGroup(TInt aGroupId); |
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/** |
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Returns the linked typeface group with the specified group ID. |
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@param aGroupId The linked typeface group ID |
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@return The linked typeface group specified or NULL if it doesn't exist |
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*/ |
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IMPORT_C CLinkedTypefaceGroup* GroupById(TInt aGroupId) const; |
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/** |
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Returns the linked typeface group at the specified index within the specification. |
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The Index ranges from 0 to the value returned by NumberOfGroups()-1. |
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@param aGroupIndex The linked typeface groups index within the specification |
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@return The linked typeface group specified or NULL if it doesn't exist |
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*/ |
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IMPORT_C const CLinkedTypefaceGroup* Group(TInt aIndex) const; |
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/** |
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Returns the number of groups that this linked typeface specification contains. |
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@see CLinkedTypefaceSpecification::Group() |
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@return TInt Number of groups |
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*/ |
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IMPORT_C TInt GroupCount() const; |
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/** |
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Default destructor |
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*/ |
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IMPORT_C ~COpenFontLinkedTypefaceSpecification(); |
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/** |
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This function constructs the linked typeface specification from the passed TLinkedTypefaceSpecificationArgs and places it on the CleanupStack. |
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WARNING: Function for internal use ONLY. Compatibility is not guaranteed in future releases. |
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@param aSpecArgs The TLinkedTypefaceSpecificationArgs container passed from font and bitmap server |
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@return A linked typeface specification object |
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*/ |
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IMPORT_C static COpenFontLinkedTypefaceSpecification* NewLC(const TLinkedTypefaceSpecificationArgs& aSpecArgs); |
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private: |
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COpenFontLinkedTypefaceSpecification(); |
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void ConstructL(const TDesC& aName); |
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void ConstructL(const TLinkedTypefaceSpecificationArgs& aSpecArgs); |
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void DoAddTypefaceL(COpenFontLinkedTypefaceElementSpec& aElementSpec, TInt aPos); |
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private: |
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RPointerArray <COpenFontLinkedTypefaceElementSpec> iTypefaces; |
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RPointerArray <CLinkedTypefaceGroup> iGroups; |
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HBufC* iLinkedTypefaceName; |
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HBufC* iLinkedTypefaceFileName; |
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}; |
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Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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1fb32624e06b
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
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208 |
#endif /*OPENFONTLINKEDTYPEFACESPECIFICATION_H_*/ |