// $Id: filtirr.cpp 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============================ */ // ImagemapRenderRegion #include "camtypes.h" #include "filtirr.h" //#include "view.h" - in camtypes.h [AUTOMATICALLY REMOVED] //#include "spread.h" - in camtypes.h [AUTOMATICALLY REMOVED] //#include "attrmgr.h" - in camtypes.h [AUTOMATICALLY REMOVED] #include "imagemap.h" //For Imagemap #include "webattr.h" //For WebAddressAttribute CC_IMPLEMENT_DYNAMIC(ImagemapRenderRegion, RenderRegion) //These MIN and MAX macros are used below #define MIN(a, b) ((a) < (b) ? (a) : (b)) #define MAX(a, b) ((a) < (b) ? (b) : (a)) /******************************************************************************************** > ImagemapRenderRegion::ImagemapRenderRegion() : RenderRegion() Author: Graham_Walmsley (Xara Group Ltd) Created: 14/4/97 Purpose: Default constructor ********************************************************************************************/ ImagemapRenderRegion::ImagemapRenderRegion() : RenderRegion() { m_Options=ImagemapFilterOptions(); } /******************************************************************************************** > ImagemapRenderRegion::ImagemapRenderRegion(ImagemapFilterOptions ifoOptions) Author: Graham_Walmsley (Xara Group Ltd) Created: 14/4/97 Purpose: Specific constructor, using a set of ImagemapFilterOptions. Note how this contructor works. It calls the RenderRegion constructor: RenderRegion(ClipRect, ConvertMatrix, ViewScale) with ClipRect derived from the ImagemapFilterOptions, ConvertMatrix set to the identity and ViewScale set to 1. ********************************************************************************************/ ImagemapRenderRegion::ImagemapRenderRegion(ImagemapFilterOptions ifoOptions) : RenderRegion(ImagemapFilterOptions::GetSizeOfExportArea(ifoOptions.m_stExportArea), Matrix(), 1) { m_Options=ifoOptions; } /******************************************************************************************** > ImagemapRenderRegion::~ImagemapRenderRegion() Author: Graham_Walmsley (Xara Group Ltd) Created: 14/4/97 Purpose: Destructor ********************************************************************************************/ ImagemapRenderRegion::~ImagemapRenderRegion() { m_Imagemap.DeleteAll(); } /******************************************************************************************** > void ImagemapRenderRegion::DrawDragRect(DocRect *RectToRender)// Author: Graham_Walmsley (Xara Group Ltd) Created: 14/4/97 Purpose: Should not be called for this kind of render region. Errors: ENSURE failure if called. SeeAlso: RenderRegion::DrawDragRect ********************************************************************************************/ void ImagemapRenderRegion::DrawDragRect(DocRect *RectToRender) { ENSURE(FALSE, "DrawDragRect called while exporting!"); } /******************************************************************************************** > void ImagemapRenderRegion::DrawPixel(const DocCoord &Point) Author: Graham_Walmsley (Xara Group Ltd) Created: 14/4/97 Purpose: Should not be called for this kind of render region. Errors: ENSURE failure if called. SeeAlso: RenderRegion::DrawPixel ********************************************************************************************/ void ImagemapRenderRegion::DrawPixel(const DocCoord &Point) { ENSURE(FALSE, "DrawPixel called while exporting!"); } /******************************************************************************************** > void ImagemapRenderRegion::DrawBlob(DocCoord p, BlobType type) Author: Graham_Walmsley (Xara Group Ltd) Created: 14/4/97 Purpose: Should not be called for this kind of render region. Errors: ENSURE failure if called. SeeAlso: RenderRegion::DrawBlob ********************************************************************************************/ void ImagemapRenderRegion::DrawBlob(DocCoord p, BlobType type) { ENSURE(FALSE, "DrawBlob called while exporting!"); } /******************************************************************************************** > void ImagemapRenderRegion::DrawCross(const DocCoord &Point, const UINT32 Size) Author: Graham_Walmsley (Xara Group Ltd) Created: 14/4/97 Purpose: Should not be called for this kind of render region. Errors: ENSURE failure if called. SeeAlso: RenderRegion::DrawCross ********************************************************************************************/ void ImagemapRenderRegion::DrawCross(const DocCoord &Point, const UINT32 Size) { ENSURE(FALSE, "DrawCross called while exporting!"); } /******************************************************************************************** > void ImagemapRenderRegion::DrawPathToOutputDevice(Path *ppthRender, PathShape shapePath=PATHSHAPE_PATH) Author: Graham_Walmsley (Xara Group Ltd) Created: 14/4/97 Inputs: ppthRender - Pointer to the path to render shapePath - Tag to tell us what shape the path is. The values we are interested in are: PATHSHAPE_RECTANGLE (and PATHSHAPE_SQUARE) PATHSHAPE_CIRCLE Purpose: Renders this path into the ImagemapRenderRegion It does this by adding a clickable area into the imagemap list. SeeAlso: RenderRegion::DrawPath ********************************************************************************************/ void ImagemapRenderRegion::DrawPathToOutputDevice(Path *ppthRender, PathShape shapePath) { //First check our path parameter if (ppthRender==NULL) { ERROR2RAW("ImagemapRenderRegion::DrawPathToOutputDevice not given a path!"); return; } //Now get the current WebAddressAttribute WebAddressAttribute* pwaaCurrent=(WebAddressAttribute*) GetCurrentAttribute(ATTR_WEBADDRESS); if (pwaaCurrent==NULL) { ERROR2RAW("ImagemapRenderRegion::DrawPathToOutputDevice - no current WebAddressAttribute!"); return; } //IF the current WebAddressAttribute has a URL if (pwaaCurrent->HasURL()) { //Then we want to add a clickable area into the imagemap //Now, if EITHER the user has specified that this clickable area is a rectangle //OR the user has specified all clickable areas should be rectangles //OR this path is a rectangle shape if (m_Options.m_fAllRectangles || pwaaCurrent->UseBoundingRectangle() || shapePath==PATHSHAPE_RECTANGLE || shapePath==PATHSHAPE_SQUARE) { //Then we want to add a clickable area into the imagemap //So get the rectangle to add DocRect rectToAdd=pwaaCurrent->GetClickableRectangleInRendering(); //And add it AddRectangleToImagemap(rectToAdd, pwaaCurrent); } else { //It's not a rectangle //So, what shape is the path? if (shapePath==PATHSHAPE_CIRCLE) //Circular. So add a circle to the imagemap AddCircleToImagemap(ppthRender, pwaaCurrent); else //Otherwise, add a polygon to the imagemap AddPathToImagemap(ppthRender, pwaaCurrent); }//End if/else rectangle } //ENd if/else has URL } /******************************************************************************************** > void ImagemapRenderRegion::DrawRect(DocRect *RectToRender) Author: Graham_Walmsley (Xara Group Ltd) Created: /08/96 Input: RectToRender - The rectangle to render Purpose: Does nothing ********************************************************************************************/ void ImagemapRenderRegion::DrawRect(DocRect *RectToRender) { ENSURE(FALSE, "ImagemapRenderRegion::DrawRect called - this should not happen!"); } /******************************************************************************************** > void ImagemapRenderRegion::DrawLine(const DocCoord &StartPoint, const DocCoord &EndPoint) Author: Graham_Walmsley (Xara Group Ltd) Created: 14/4/97 Purpose: None at present - this function should not be called during ink rendering. Errors: ENSURE failure if called. ********************************************************************************************/ void ImagemapRenderRegion::DrawLine(const DocCoord &StartPoint, const DocCoord &EndPoint) { ENSURE(FALSE, "ImagemapRenderRegion::DrawLine called - this should not happen!"); } /******************************************************************************************** > MILLIPOINT ImagemapRenderRegion::CalcPixelWidth() Author: Graham_Walmsley (Xara Group Ltd) Created: 14/4/97 Returns: Width of pixels on millipoints. Purpose: None for Imagemap render regions - just returns 1. Errors: - SeeAlso: ImagemapRenderRegion::CalcScaledPixelWidth ********************************************************************************************/ MILLIPOINT ImagemapRenderRegion::CalcPixelWidth() { //Return an invalid value return 1; } /******************************************************************************************** > MILLIPOINT ImagemapRenderRegion::CalcScaledPixelWidth() Author: Graham_Walmsley (Xara Group Ltd) Created: 14/4/97 Returns: Scaled width of pixels on millipoints. Purpose: None for CMX render regions - just returns 1. Errors: ENSURE failure if called. SeeAlso: ImagemapRenderRegion::CalcPixelWidth ********************************************************************************************/ MILLIPOINT ImagemapRenderRegion::CalcScaledPixelWidth() { //Return an invalid value return 1; } /******************************************************************************************** > virtual void ImagemapRenderRegion::GetRenderRegionCaps(RRCaps* pCaps) Author: Graham_Walmsley (Xara Group Ltd) Created: 14/4/97 Outputs: pCaps - The details about what types of thing this render region can render Purpose: This function allows render regions to admit to what they can and can not render. This allows other areas of the program to come in and help render regions out in some situations, if they are unable to render everything. eg. an OSRenderRegion can not render transparancy. ********************************************************************************************/ void ImagemapRenderRegion::GetRenderRegionCaps(RRCaps* pCaps) { //This seems to be what all the other overrides do, so I guess //I'll do the same pCaps->CanDoNothing(); } /******************************************************************************************** > virtual BOOL ImagemapRenderRegion::WantsGrids() Author: Graham_Walmsley (Xara Group Ltd) Created: 14/4/97 Returns: FALSE Purpose: very little ********************************************************************************************/ BOOL ImagemapRenderRegion::WantsGrids() { return FALSE; } /******************************************************************************************** > INT32 ImagemapRenderRegion::Write(CCLexFile* pfileToWrite=NULL, TCHAR* pcBuffer=NULL) Author: Graham_Walmsley (Xara Group Ltd) Created: 16/4/97 Inputs: pfileToWrite - The file to write to pcBuffer - Pointer to a text buffer to write to Either of the above may be NULL. Returns: The number of TCHARs written. Purpose: Writes the imagemap HTML, either to the file or the text buffer or both: ********************************************************************************************/ INT32 ImagemapRenderRegion::Write(CCLexFile* pfileToWrite, TCHAR* pcBuffer) { return m_Imagemap.Write(pfileToWrite, pcBuffer); } /******************************************************************************************** > void ImagemapRenderRegion::AddRectangleToImagemap(DocRect rectToScale, WebAddressAttribute* pwaaCurrent) Author: Graham_Walmsley (Xara Group Ltd) Created: 25/4/97 Inputs: rectToAdd The rectangle to add to the imagemap pwaaToAdd Pointer to the current WebAddressAttribute Purpose: Scales the rectangle then adds it to the imagemap list. SeeAlso: ImagemapRenderRegion::DrawPathToOutputDevice ********************************************************************************************/ void ImagemapRenderRegion::AddRectangleToImagemap(DocRect rectToScale, WebAddressAttribute* pwaaCurrent) { //First get the origin of the export area and the DPI DocCoord dcOrigin=ImagemapFilterOptions::GetOriginOfExportArea(m_Options.m_stExportArea); double dDPI=m_Options.m_dDPI; //Scale the rectangle rectToScale.lo.Scale(dcOrigin, dDPI); rectToScale.hi.Scale(dcOrigin, dDPI); //Now, in scaling the rectangle we may have made it invalid (for example, we //may have scaled rectToScale.lo so that it is actually higher than recToScale.hi). //So create a new valid rectangle DocRect rectToAdd; rectToAdd.lo.x=MIN(rectToScale.lo.x, rectToScale.hi.x); rectToAdd.hi.x=MAX(rectToScale.lo.x, rectToScale.hi.x); rectToAdd.lo.y=MIN(rectToScale.lo.y, rectToScale.hi.y); rectToAdd.hi.y=MAX(rectToScale.lo.y, rectToScale.hi.y); //And add it to the imagemap m_Imagemap.AddRectangle(rectToAdd, pwaaCurrent->m_url.GetWebAddress(), pwaaCurrent->m_pcFrame); } /******************************************************************************************** > void ImagemapRenderRegion::AddCircleToImagemap(Path* ppthToScale, WebAddressAttribute* pwaaCurrent) Author: Graham_Walmsley (Xara Group Ltd) Created: 25/4/97 Inputs: ppthToAdd The circle to add to the imagemap pwaaToAdd Pointer to the current WebAddressAttribute Purpose: Scales the path then adds it to the imagemap list as a circle SeeAlso: ImagemapRenderRegion::DrawPathToOutputDevice ********************************************************************************************/ void ImagemapRenderRegion::AddCircleToImagemap(Path* ppthToScale, WebAddressAttribute* pwaaCurrent) { //First get the origin of the export area and the DPI DocCoord dcOrigin=ImagemapFilterOptions::GetOriginOfExportArea(m_Options.m_stExportArea); double dDPI=m_Options.m_dDPI; //Now make a copy of the path Path pthToAdd; pthToAdd.Initialise(ppthToScale->GetNumCoords()); pthToAdd.CopyPathDataFrom(ppthToScale); //Scale it pthToAdd.Scale(dcOrigin, dDPI); //And add it to the imagemap m_Imagemap.AddCircle(&pthToAdd, pwaaCurrent->m_url.GetWebAddress(), pwaaCurrent->m_pcFrame); } /******************************************************************************************** > void ImagemapRenderRegion::AddPathToImagemap(Path* ppthToAdd, WebAddressAttribute* pwaaCurrent) Author: Graham_Walmsley (Xara Group Ltd) Created: 25/4/97 Inputs: ppthToAdd The path to add to the imagemap pwaaToAdd Pointer to the current WebAddressAttribute Purpose: This function goes through the subpaths of the path one by one. For each closed subpath, it: a. Scales the subpath b. Flattens the subpath c. Adds the result to the imagemap SeeAlso: ImagemapRenderRegion::DrawPathToOutputDevice ********************************************************************************************/ void ImagemapRenderRegion::AddPathToImagemap(Path* ppthToAdd, WebAddressAttribute* pwaaCurrent) { //First get the origin of the export area and the DPI DocCoord dcOrigin=ImagemapFilterOptions::GetOriginOfExportArea(m_Options.m_stExportArea); double dDPI=m_Options.m_dDPI; //Now, how many subpaths are there in this path? INT32 lNumSubpaths=ppthToAdd->GetNumSubpaths(); //For each subpath in the path for (INT32 l=0; lGetNumCoords()); //And copy the next subpath into it ppthToAdd->MakePathFromSubPath(l, &pthSubpath); //Now, if that subpath is closed if (pthSubpath.IsSubPathClosed(0)) { //Then we want to add it to the imagemap //So scale it to dDPI and by dcOrigin pthSubpath.Scale(dcOrigin, dDPI); //Now we need to flatten it. //This means creating a new path, because otherwise Path::Flatten //goes wrong Path pthFlattened; pthFlattened.Initialise(pthSubpath.GetNumCoords()); //So, if we should flatten the path if (m_Options.m_ffApprox!=FF_NOTATALL) //Then do it pthSubpath.Flatten(m_Options.m_ffApprox, &pthFlattened); else //Otherwise, simply copy the path across pthFlattened.CopyPathDataFrom(&pthSubpath); //Then add the flattened path to the imagemap m_Imagemap.AddPolygon(&pthFlattened, pwaaCurrent->m_url.GetWebAddress(), pwaaCurrent->m_pcFrame); } } }