/* Copyright (C) 2000, S.R.Haque <shaheedhaque@hotmail.com>. This file is part of the KDE project This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License aS32 with this library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, * Boston, MA 02110-1301, USA. DESCRIPTION This is a generic parser for Windows MetaFiles (WMFs). The output is a series of callbacks (a.k.a. virtual functions) which the caller can override as required. This is based on code originally written by Stefan Taferner (taferner@kde.org). */ #ifndef KWMF_H #define KWMF_H #include <tqvaluestack.h> #include <koffice_export.h> class TQDataStream; class TQPointArray; class KOWMF_EXPORT KWmf { public: // Construction. KWmf( unsigned dpi); virtual ~KWmf(); // Called to parse the given file. bool parse( const TQString &file); bool parse( TQDataStream &stream, unsigned size); class KOWMF_EXPORT DrawContext { public: DrawContext(); bool m_winding; unsigned m_brushColour; unsigned m_brushStyle; unsigned m_penColour; unsigned m_penStyle; unsigned m_penWidth; }; // Should be protected... void brushSet( unsigned colour, unsigned style); void penSet( unsigned colour, unsigned style, unsigned width); protected: // Override to get results of parsing. virtual void gotEllipse( const DrawContext &dc, TQString type, TQPoint topLeft, TQSize halfAxes, unsigned startAngle, unsigned stopAngle) = 0; virtual void gotPolygon( const DrawContext &dc, const TQPointArray &points) = 0; virtual void gotPolyline( const DrawContext &dc, const TQPointArray &points) = 0; virtual void gotRectangle( const DrawContext &dc, const TQPointArray &points) = 0; private: // Debug support. static const int s_area; // Use unambiguous names for Microsoft types. typedef short S16; typedef int S32; typedef unsigned int U32; int m_dpi; int m_windowOrgX; int m_windowOrgY; int m_windowFlipX; int m_windowFlipY; DrawContext m_dc; TQValueStack<DrawContext> m_savedDcs; TQPoint m_lineFrom; // Windows handle management. class WinObjHandle { public: virtual ~WinObjHandle () {} virtual void apply(KWmf &p) = 0; }; class WinObjBrushHandle: public WinObjHandle { public: virtual void apply(KWmf &p); unsigned m_colour; unsigned m_style; }; class WinObjPenHandle: public WinObjHandle { public: virtual void apply(KWmf &p); unsigned m_colour; unsigned m_style; unsigned m_width; }; int handleIndex(void) const; WinObjPenHandle *handleCreatePen(void); WinObjBrushHandle *handleCreateBrush(void); void handleDelete(int idx); static const int s_maxHandles; WinObjHandle **m_objectHandles; unsigned getColour(S32 colour); TQPoint normalisePoint( TQDataStream &operands); TQSize normaliseSize( TQDataStream &operands); void genericArc( TQString type, TQDataStream &operands); // Opcode handling and painter methods. void walk( U32 words, TQDataStream &stream); void skip( U32 words, TQDataStream &operands); void invokeHandler( S16 opcode, U32 words, TQDataStream &operands); /* // draw multiple polygons void opPolypolygon(U32 words, TQDataStream &operands); */ void opArc(U32 words, TQDataStream &operands); // create a logical brush void opBrushCreateIndirect(U32 words, TQDataStream &operands); void opEllipse(U32 words, TQDataStream &operands); // draw line to coord void opLineTo(U32 words, TQDataStream &operands); // move pen to coord void opMoveTo(U32 words, TQDataStream &operands); // do nothing void opNoop(U32 words, TQDataStream &operands); // Free object handle void opObjectDelete(U32 words, TQDataStream &operands); // Activate object handle void opObjectSelect(U32 words, TQDataStream &operands); // create a logical pen void opPenCreateIndirect(U32 words, TQDataStream &operands); void opPie(U32 words, TQDataStream &operands); // draw polygon void opPolygon(U32 words, TQDataStream &operands); // set polygon fill mode void opPolygonSetFillMode(U32 words, TQDataStream &operands); // draw series of lines void opPolyline(U32 words, TQDataStream &operands); void opRectangle(U32 words, TQDataStream &operands); // restore drawing context void opRestoreDc(U32 words, TQDataStream &operands); // save drawing context void opSaveDc(U32 words, TQDataStream &operands); // set window origin void opWindowSetOrg(U32 words, TQDataStream &operands); // set window extents void opWindowSetExt(U32 words, TQDataStream &operands); /* // set background pen color void opsetBkColor(U32 words, TQDataStream &operands); // set background pen mode void opsetBkMode(U32 words, TQDataStream &operands); // Set raster operation mode void opsetRop(U32 words, TQDataStream &operands); // Escape (enhanced command set) void opescape(U32 words, TQDataStream &operands); */ }; #endif