diff options
Diffstat (limited to 'lib/kwmf/kwmf.h')
| -rw-r--r-- | lib/kwmf/kwmf.h | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/lib/kwmf/kwmf.h b/lib/kwmf/kwmf.h new file mode 100644 index 000000000..4f1b050a5 --- /dev/null +++ b/lib/kwmf/kwmf.h @@ -0,0 +1,220 @@ +/* + 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 <qvaluestack.h> +#include <koffice_export.h> +class QDataStream; +class QPointArray; + +class KOWMF_EXPORT KWmf +{ +public: + + // Construction. + + KWmf( + unsigned dpi); + virtual ~KWmf(); + + // Called to parse the given file. + + bool parse( + const QString &file); + bool parse( + QDataStream &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, + QString type, + QPoint topLeft, + QSize halfAxes, + unsigned startAngle, + unsigned stopAngle) = 0; + virtual void gotPolygon( + const DrawContext &dc, + const QPointArray &points) = 0; + virtual void gotPolyline( + const DrawContext &dc, + const QPointArray &points) = 0; + virtual void gotRectangle( + const DrawContext &dc, + const QPointArray &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; + QValueStack<DrawContext> m_savedDcs; + QPoint 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); + QPoint normalisePoint( + QDataStream &operands); + QSize normaliseSize( + QDataStream &operands); + void genericArc( + QString type, + QDataStream &operands); + + // Opcode handling and painter methods. + + void walk( + U32 words, + QDataStream &stream); + void skip( + U32 words, + QDataStream &operands); + void invokeHandler( + S16 opcode, + U32 words, + QDataStream &operands); +/* + // draw multiple polygons + void opPolypolygon(U32 words, QDataStream &operands); +*/ + void opArc(U32 words, QDataStream &operands); + // create a logical brush + void opBrushCreateIndirect(U32 words, QDataStream &operands); + void opEllipse(U32 words, QDataStream &operands); + // draw line to coord + void opLineTo(U32 words, QDataStream &operands); + // move pen to coord + void opMoveTo(U32 words, QDataStream &operands); + // do nothing + void opNoop(U32 words, QDataStream &operands); + // Free object handle + void opObjectDelete(U32 words, QDataStream &operands); + // Activate object handle + void opObjectSelect(U32 words, QDataStream &operands); + // create a logical pen + void opPenCreateIndirect(U32 words, QDataStream &operands); + void opPie(U32 words, QDataStream &operands); + // draw polygon + void opPolygon(U32 words, QDataStream &operands); + // set polygon fill mode + void opPolygonSetFillMode(U32 words, QDataStream &operands); + // draw series of lines + void opPolyline(U32 words, QDataStream &operands); + void opRectangle(U32 words, QDataStream &operands); + // restore drawing context + void opRestoreDc(U32 words, QDataStream &operands); + // save drawing context + void opSaveDc(U32 words, QDataStream &operands); + // set window origin + void opWindowSetOrg(U32 words, QDataStream &operands); + // set window extents + void opWindowSetExt(U32 words, QDataStream &operands); +/* + // set background pen color + void opsetBkColor(U32 words, QDataStream &operands); + // set background pen mode + void opsetBkMode(U32 words, QDataStream &operands); + // Set raster operation mode + void opsetRop(U32 words, QDataStream &operands); + // Escape (enhanced command set) + void opescape(U32 words, QDataStream &operands); +*/ +}; + +#endif |