// $Id: offattr.h 1282 2006-06-09 09:46:49Z alex $ /* @@tag:xara-cn@@ DO NOT MODIFY THIS LINE ================================XARAHEADERSTART=========================== Xara LX, a vector drawing and manipulation program. Copyright (C) 1993-2006 Xara Group Ltd. Copyright on certain contributions may be held in joint with their respective authors. See AUTHORS file for details. LICENSE TO USE AND MODIFY SOFTWARE ---------------------------------- This file is part of Xara LX. Xara LX is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 2 as published by the Free Software Foundation. Xara LX and its component source files are 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 General Public License for more details. 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Xara Group Ltd, Gaddesden Place, Hemel Hempstead, HP2 6EX, UK. http://www.xara.com/ =================================XARAHEADEREND============================ */ #ifndef INC_OFFSCREENATTR #define INC_OFFSCREENATTR // structs, typedefs, defines // class definitions // 1 - call classes member functions, // 2 - use the class type for one of the members (not required if have pointer to class ??) // 3 - to derive a superclass?? //#include "attrval.h" - in camtypes.h [AUTOMATICALLY REMOVED] #include "gla.h" //////////////////////// // class predeclarations //////////////////////// class KernelBitmap; class GRenderRegion; //////////// // debugging //////////// // Create a bitmap copy of the feathered object for comparison with the bitmap generated // via the offscreen rendering system (ie m_pOffscreenBitmapInfo/Bits inside GoingOutOfScope) // NB Set _DEBUG_OFFSCREEN_PIXEL_WIDTH, leave _DEBUG_OFFSCREEN_MP_WIDTH as is // ( See notes in fthrattr.cpp for useage guidelines ) //#define _DEBUG_OFFSCREEN_PIXEL_WIDTH 44 //#define _DEBUG_OFFSCREEN_MP_WIDTH _DEBUG_OFFSCREEN_PIXEL_WIDTH * 750 ///////////////////////////////////////////////////////////////////////////////////////////// // // Helper functions // ///////////////////////////////////////////////////////////////////////////////////////////// // Conversion between millipoints and pixels at current view scale FIXED16 GetCurrentViewScale(); MILLIPOINT ConvertMeasurementToMillipointsAtCurrentViewScale(INT32 Width, UnitType type); UINT32 ConvertMillipointsToPixelsAtCurrentViewScale(MILLIPOINT mp); INT32 PixelsPerMeterAtCurrentViewScale(); ///////////////////////////////////////////////////////////////////////////////////////////// // // AttributeValue classes // ///////////////////////////////////////////////////////////////////////////////////////////// /******************************************************************************************** > class OffscreenAttrValue : public GeometryLinkedAttrValue Author: Ilan_Copelyn (Xara Group Ltd) Created: 2/06/2000 Purpose: Provides a superclass from which you can derive attributes which require the nodes which they affect to be rendered offscreen. SeeAlso: Notes: This attribute is not meant to be instantated directly! It has no AttrIndex and is not added to the default attribute table when the attribute manager initialises itself ********************************************************************************************/ class OffscreenAttrValue : public GeometryLinkedAttrValue { CC_DECLARE_DYNAMIC( OffscreenAttrValue ) protected: OffscreenAttrValue(); // not meant to be instantiated directly public: ~OffscreenAttrValue(); public: // Standard functions required by Attribute framework virtual BOOL IsDifferent(AttributeValue*); // Karim 17/08/2000 // This override is required so that the m_fForceTransparency flag is copied around. virtual void SimpleCopy(AttributeValue *pOther) { GeometryLinkedAttrValue::SimpleCopy(pOther); m_fForceTransparency = ((OffscreenAttrValue*)pOther)->m_fForceTransparency; } // Generic attr rendering functions (rely on GRenderRegion offscreen rendering system to do the work) virtual void Restore(RenderRegion *, BOOL); virtual void Render(RenderRegion *, BOOL Temp = FALSE); // Query function for GRenderRegion // virtual BOOL OffscreenBmpRectMayExceedViewableRect() { return FALSE; } // not used at the moment. might by required though virtual DocRect GetOffscreenBoundingRect(); virtual void SetOffscreenBoundingRect(const DocRect drOffBB) { m_OffBB = drOffBB; } // Allow derived classes to overide integral parts of the offscreen bmp setup process virtual BOOL DoesOffscreenBmpRequireTransp(GRenderRegion* pGRR = NULL); BOOL TestNodeForTransparency(Node* pNode = NULL); virtual void GetMinimumOffscreenBmpDimensions(UINT32* RequiredWidth, UINT32* RequiredHeight) { *RequiredWidth=0;*RequiredHeight=0; } virtual BOOL DoesOffscreenBMPCaptureBackground() {return FALSE;} // Karim 17/08/2000 - force this attr to always use a transparency-capable offscreen bmp. void SetAlwaysUseTransparency() { m_fForceTransparency = TRUE; } // Karim 17/08/2000 // let this attr choose whether or not to use a transparency-capable offscreen bitmap. void UnsetAlwaysUseTransparency() { m_fForceTransparency = FALSE; } // Overide this to use the offscreen bitmap virtual void OffscreenRenderingCompleted(RenderRegion *pRender, LPBITMAPINFO lpBitmapInfo, LPBYTE lpBits, DocRect BitmapRect) = 0; //------------------------------------------------------------------------------------------------------------- // Debugging your offscreen attribute // #ifdef _DEBUG_OFFSCREEN_PIXEL_WIDTH protected: // Debugging function. Creates bitmap of a node using new GRenderBitmap RR. // Useful for comparing to offscreen bitmap. KernelBitmap* CreateIntermediateBitmap( GRenderRegion* GRR, Node* pNode, double ScreenResMultiplier, UINT32 bpp, BOOL UseInternalFmt ); BOOL RenderDebuggingBitmaps(GRenderRegion* GRR, Node* pNode, double ScreenResMultiplier, UINT32 bpp, BOOL UseInternalFmt ); #endif protected: //------------------------------------------------------------------------------------------------------------- // Member Variables // // Offscreen rendering attributes: DocRect m_OffBB; // Karim 16/08/2000 // a record of whether or not our linked node requires transparency. BOOL m_fForceTransparency; // DocRect m_ViewBB; #ifdef _DEBUG_OFFSCREEN_PIXEL_WIDTH // Debugging members KernelBitmap* md_NodeBmp; KernelBitmap* md_SlicedBmp; #endif //------------------------------------------------------------------------------------------------------------- #ifdef DEBUGOFFSCREENATTRS private: // Debug render-twice flag. See OffscreenAttrValue::Render() for more info. BOOL m_fHasBeenRendered; #endif }; #endif //INC_OFFSCREENATTR