/////////////////////////////////////////////////////////////////////////////
// Name: dc.cpp
// Purpose: wxDC class
-// Author: AUTHOR
+// Author: David Webster
// Modified by:
-// Created: 01/02/97
+// Created: 10/14/99
// RCS-ID: $Id$
-// Copyright: (c) AUTHOR
-// Licence: wxWindows licence
+// Copyright: (c) David Webster
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-#ifdef __GNUG__
-#pragma implementation "dc.h"
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#ifndef WX_PRECOMP
+ #include "wx/window.h"
+ #include "wx/dc.h"
+ #include "wx/utils.h"
+ #include "wx/dialog.h"
+ #include "wx/app.h"
+ #include "wx/bitmap.h"
+ #include "wx/dcmemory.h"
+ #include "wx/log.h"
+ #include "wx/icon.h"
#endif
-#include "wx/dc.h"
+#include "wx/dcprint.h"
-#if !USE_SHARED_LIBRARY
-IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject)
-#endif
+#include <string.h>
+#include <math.h>
+
+#include "wx/os2/private.h"
+
+ IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject)
-//-----------------------------------------------------------------------------
+// ---------------------------------------------------------------------------
// constants
-//-----------------------------------------------------------------------------
+// ---------------------------------------------------------------------------
-#define mm2inches 0.0393700787402
-#define inches2mm 25.4
-#define mm2twips 56.6929133859
-#define twips2mm 0.0176388888889
-#define mm2pt 2.83464566929
-#define pt2mm 0.352777777778
+static const int VIEWPORT_EXTENT = 1000;
-//-----------------------------------------------------------------------------
-// wxDCBase
-//-----------------------------------------------------------------------------
+static const int MM_POINTS = 9;
+static const int MM_METRIC = 10;
-long wxDCBase::DeviceToLogicalX(long x) const
-{
- long new_x = x - m_deviceOriginX;
- if (new_x > 0)
- return (long)((double)(new_x) / m_scaleX + 0.5) * m_signX + m_logicalOriginX;
- else
- return (long)((double)(new_x) / m_scaleX - 0.5) * m_signX + m_logicalOriginX;
-};
+// usually this is defined in math.h
+#ifndef M_PI
+ static const double M_PI = 3.14159265358979323846;
+#endif // M_PI
-long wxDCBase::DeviceToLogicalY(long y) const
-{
- long new_y = y - m_deviceOriginY;
- if (new_y > 0)
- return (long)((double)(new_y) / m_scaleY + 0.5) * m_signY + m_logicalOriginY;
- else
- return (long)((double)(new_y) / m_scaleY - 0.5) * m_signY + m_logicalOriginY;
-};
+// ---------------------------------------------------------------------------
+// private functions
+// ---------------------------------------------------------------------------
-long wxDCBase::DeviceToLogicalXRel(long x) const
-{
- if (x > 0)
- return (long)((double)(x) / m_scaleX + 0.5);
- else
- return (long)((double)(x) / m_scaleX - 0.5);
-};
+// convert degrees to radians
+static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
-long wxDCBase::DeviceToLogicalYRel(long y) const
+int SetTextColor(
+ HPS hPS
+, int nForegroundColour
+)
{
- if (y > 0)
- return (long)((double)(y) / m_scaleY + 0.5);
- else
- return (long)((double)(y) / m_scaleY - 0.5);
-};
+ CHARBUNDLE vCbnd;
+
+ vCbnd.lColor = nForegroundColour;
+ ::GpiSetAttrs( hPS // presentation-space handle
+ ,PRIM_CHAR // Char primitive.
+ ,CBB_COLOR // sets color.
+ ,0 //
+ ,&vCbnd // buffer for attributes.
+ );
+ return 0;
+}
-long wxDCBase::LogicalToDeviceX(long x) const
+int QueryTextBkColor(
+ HPS hPS
+)
{
- long new_x = x - m_logicalOriginX;
- if (new_x > 0)
- return (long)((double)(new_x) * m_scaleX + 0.5) * m_signX + m_deviceOriginX;
- else
- return (long)((double)(new_x) * m_scaleX - 0.5) * m_signX + m_deviceOriginX;
-};
+ CHARBUNDLE vCbnd;
+
+ ::GpiQueryAttrs( hPS // presentation-space handle
+ ,PRIM_CHAR // Char primitive.
+ ,CBB_BACK_COLOR // Background color.
+ ,&vCbnd // buffer for attributes.
+ );
+ return vCbnd.lBackColor;
+}
-long wxDCBase::LogicalToDeviceY(long y) const
-{
- long new_y = y - m_logicalOriginY;
- if (new_y > 0)
- return (long)((double)(new_y) * m_scaleY + 0.5) * m_signY + m_deviceOriginY;
- else
- return (long)((double)(new_y) * m_scaleY - 0.5) * m_signY + m_deviceOriginY;
-};
-long wxDCBase::LogicalToDeviceXRel(long x) const
+int SetTextBkColor(
+ HPS hPS
+, int nBackgroundColour
+)
{
- if (x > 0)
- return (long)((double)(x) * m_scaleX + 0.5);
- else
- return (long)((double)(x) * m_scaleX - 0.5);
-};
+ CHARBUNDLE vCbnd;
+ int rc;
+
+ rc = QueryTextBkColor(hPS);
+
+ vCbnd.lBackColor = nBackgroundColour;
+ ::GpiSetAttrs(hPS, // presentation-space handle
+ PRIM_CHAR, // Char primitive.
+ CBB_BACK_COLOR, // sets color.
+ 0,
+ &vCbnd // buffer for attributes.
+ );
+ return rc;
+}
-long wxDCBase::LogicalToDeviceYRel(long y) const
+int SetBkMode(
+ HPS hPS
+, int nBackgroundMode
+)
{
- if (y > 0)
- return (long)((double)(y) * m_scaleY + 0.5);
+ if(nBackgroundMode == wxTRANSPARENT)
+ ::GpiSetBackMix( hPS
+ ,BM_LEAVEALONE
+ );
else
- return (long)((double)(y) * m_scaleY - 0.5);
-};
+ // the background of the primitive takes over whatever is underneath.
+ ::GpiSetBackMix( hPS
+ ,BM_OVERPAINT
+ );
+ return 0;
+}
+
+// ===========================================================================
+// implementation
+// ===========================================================================
-//-----------------------------------------------------------------------------
+// ---------------------------------------------------------------------------
// wxDC
-//-----------------------------------------------------------------------------
+// ---------------------------------------------------------------------------
wxDC::wxDC(void)
{
- m_owner = NULL;
- m_bitmap = NULL;
-
- m_oldBitmap = 0;
- m_oldPen = 0;
- m_oldBrush = 0;
- m_oldFont = 0;
- m_oldPalette = 0;
- m_hDC = 0;
- m_hDCCount = 0;
+ m_pCanvas = NULL;
+
+ m_hOldBitmap = 0;
+ m_hOldPen = 0;
+ m_hOldBrush = 0;
+ m_hOldFont = 0;
+ m_hOldPalette = 0;
+
+ m_bOwnsDC = FALSE;
+ m_hDC = 0;
+ m_nDCCount = 0;
+ m_hOldPS = NULL;
+ m_hPS = NULL;
+ m_bIsPaintTime = FALSE;// True at Paint Time
};
wxDC::~wxDC(void)
// TODO:
};
+// This will select current objects out of the DC,
+// which is what you have to do before deleting the
+// DC.
+void wxDC::SelectOldObjects(WXHDC dc)
+{
+ if (dc)
+ {
+ if (m_hOldBitmap)
+ {
+// ::SelectObject((HDC) dc, (HBITMAP) m_oldBitmap);
+ if (m_vSelectedBitmap.Ok())
+ {
+ m_vSelectedBitmap.SetSelectedInto(NULL);
+ }
+ }
+ m_hOldBitmap = 0;
+ if (m_hOldPen)
+ {
+// ::SelectObject((HDC) dc, (HPEN) m_oldPen);
+ }
+ m_hOldPen = 0;
+ if (m_hOldBrush)
+ {
+// ::SelectObject((HDC) dc, (HBRUSH) m_oldBrush);
+ }
+ m_hOldBrush = 0;
+ if (m_hOldFont)
+ {
+// ::SelectObject((HDC) dc, (HFONT) m_oldFont);
+ }
+ m_hOldFont = 0;
+ if (m_hOldPalette)
+ {
+// ::SelectPalette((HDC) dc, (HPALETTE) m_oldPalette, TRUE);
+ }
+ m_hOldPalette = 0;
+ }
+
+ m_brush = wxNullBrush;
+ m_pen = wxNullPen;
+ m_palette = wxNullPalette;
+ m_font = wxNullFont;
+ m_backgroundBrush = wxNullBrush;
+ m_vSelectedBitmap = wxNullBitmap;
+}
+
+// ---------------------------------------------------------------------------
+// clipping
+// ---------------------------------------------------------------------------
+
+#define DO_SET_CLIPPING_BOX() \
+{ \
+ RECTL rect; \
+ \
+ ::GpiQueryClipBox(m_hPS, &rect); \
+ \
+ m_clipX1 = (wxCoord) XDEV2LOG(rect.xLeft); \
+ m_clipY1 = (wxCoord) YDEV2LOG(rect.yTop); \
+ m_clipX2 = (wxCoord) XDEV2LOG(rect.xRight); \
+ m_clipY2 = (wxCoord) YDEV2LOG(rect.yBottom); \
+}
+
+void wxDC::DoSetClippingRegion(
+ wxCoord x
+, wxCoord y
+, wxCoord width
+, wxCoord height
+)
+{
+ RECTL vRect;
+
+ m_clipping = TRUE;
+ vRect.xLeft = XLOG2DEV(x);
+ vRect.yTop = YLOG2DEV(y + height);
+ vRect.xRight = XLOG2DEV(x + width);
+ vRect.yBottom = YLOG2DEV(y);
+ ::GpiIntersectClipRectangle(m_hPS, &vRect);
+ DO_SET_CLIPPING_BOX()
+} // end of wxDC::DoSetClippingRegion
+
+void wxDC::DoSetClippingRegionAsRegion(
+ const wxRegion& rRegion
+)
+{
+ wxCHECK_RET(rRegion.GetHRGN(), wxT("invalid clipping region"));
+ HRGN hRgnOld;
+
+ m_clipping = TRUE;
+ ::GpiSetClipRegion( m_hPS
+ ,(HRGN)rRegion.GetHRGN()
+ ,&hRgnOld
+ );
+ DO_SET_CLIPPING_BOX()
+} // end of wxDC::DoSetClippingRegionAsRegion
+
void wxDC::DestroyClippingRegion(void)
{
- // TODO:
-};
+ if (m_clipping && m_hPS)
+ {
+ HRGN hRgnOld;
+ RECTL vRect;
+
+ // TODO: this should restore the previous clipped region
+ // so that OnPaint processing works correctly, and
+ // the update doesn't get destroyed after the first
+ // DestroyClippingRegion
+ vRect.xLeft = XLOG2DEV(0);
+ vRect.yTop = YLOG2DEV(32000);
+ vRect.xRight = XLOG2DEV(32000);
+ vRect.yBottom = YLOG2DEV(0);
+
+ HRGN hRgn = ::GpiCreateRegion(m_hPS, 1, &vRect);
+
+ ::GpiSetClipRegion(m_hPS, hRgn, &hRgnOld);
+ }
+ m_clipping = FALSE;
+} // end of wxDC::DestroyClippingRegion
+
+// ---------------------------------------------------------------------------
+// query capabilities
+// ---------------------------------------------------------------------------
+
+bool wxDC::CanDrawBitmap() const
+{
+ return TRUE;
+}
-void wxDC::DoGetSize( int* width, int* height ) const
+bool wxDC::CanGetTextExtent() const
{
- // TODO:
-};
+ // What sort of display is it?
+ int technology = 0; // TODO: ::GetDeviceCaps(GetHdc(), TECHNOLOGY);
-void wxDC::DoGetSizeMM( int* width, int* height ) const
+ // TODO: return (technology == DT_RASDISPLAY) || (technology == DT_RASPRINTER);
+ return FALSE;
+}
+
+int wxDC::GetDepth() const
{
- // TODO:
-};
+ // TODO:
+ return (1);
+}
-void wxDC::SetMapMode( int mode )
+// ---------------------------------------------------------------------------
+// drawing
+// ---------------------------------------------------------------------------
+
+void wxDC::Clear()
{
- // TODO:
-};
+ ::GpiErase(m_hPS);
+}
-void wxDC::SetUserScale( double x, double y )
+void wxDC::DoFloodFill(
+ wxCoord vX
+, wxCoord vY
+, const wxColour& rCol
+, int nStyle
+)
{
- m_userScaleX = x;
- m_userScaleY = y;
+ POINTL vPtlPos;
+ LONG lColor;
+ LONG lOptions;
+
+ vPtlPos.x = vX; // Loads x-coordinate
+ vPtlPos.y = vY; // Loads y-coordinate
+ ::GpiMove(m_hPS, &vPtlPos); // Sets current position
+ lColor = rCol.GetPixel();
+ lOptions = FF_BOUNDARY;
+ if(wxFLOOD_SURFACE == nStyle)
+ lOptions = FF_SURFACE;
+
+ ::GpiFloodFill(m_hPS, lOptions, lColor);
+}
- SetMapMode(m_mappingMode);
-};
+bool wxDC::DoGetPixel(
+ wxCoord vX
+, wxCoord vY
+, wxColour* pCol
+) const
+{
+ POINTL vPoint;
+ LONG lColor;
+
+ vPoint.x = vX;
+ vPoint.y = vY;
+ lColor = ::GpiSetPel(m_hPS, &vPoint);
+ pCol->Set((unsigned long)lColor);
+ if(lColor>= 0)
+ return(TRUE);
+ else
+ return(FALSE);
+}
-void wxDC::SetLogicalScale( double x, double y )
+void wxDC::DoCrossHair(wxCoord x, wxCoord y)
{
- // TODO:
-};
+ // TODO
+}
-void wxDC::SetLogicalOrigin( long x, long y )
+void wxDC::DoDrawLine(
+ wxCoord vX1
+, wxCoord vY1
+, wxCoord vX2
+, wxCoord vY2
+)
{
- // TODO:
-};
+ POINTL vPoint[2];
+
+ vPoint[0].x = vX1;
+ vPoint[0].y = vY1;
+ vPoint[1].x = vX2;
+ vPoint[1].y = vY2;
+ ::GpiMove(m_hPS, &vPoint[0]);
+ ::GpiLine(m_hPS, &vPoint[1]);
+}
-void wxDC::SetDeviceOrigin( long x, long y )
+//////////////////////////////////////////////////////////////////////////////
+// Draws an arc of a circle, centred on (xc, yc), with starting point (x1, y1)
+// and ending at (x2, y2). The current pen is used for the outline and the
+// current brush for filling the shape. The arc is drawn in an anticlockwise
+// direction from the start point to the end point.
+//////////////////////////////////////////////////////////////////////////////
+void wxDC::DoDrawArc(
+ wxCoord vX1
+, wxCoord vY1
+, wxCoord vX2
+, wxCoord vY2
+, wxCoord vXc
+, wxCoord vYc
+)
{
- // TODO:
-};
+ POINTL vPtlPos;
+ POINTL vPtlArc[2]; // Structure for current position
+ int nDx;
+ int nDy;
+ double dRadius;
+ double dAngl1;
+ double dAngl2;
+ double dAnglmid;
+ wxCoord vXm;
+ wxCoord vYm;
+ ARCPARAMS vArcp; // Structure for arc parameters
+
+ if((vX1 == vXc && vY1 == vXc) || (vX2 == vXc && vY2 == vXc))
+ return; // Draw point ??
+ dRadius = 0.5 * ( hypot( (double)(vY1 - vYc)
+ ,(double)(vX1 - vXc)
+ ) +
+ hypot( (double)(vY2 - vYc)
+ ,(double)(vX2 - vXc)
+ )
+ );
+
+ dAngl1 = atan2( (double)(vY1 - vYc)
+ ,(double)(vX1 - vXc)
+ );
+ dAngl2 = atan2( (double)(vY2 - vYc)
+ ,(double)(vX2 - vXc)
+ );
+ if(dAngl2 < dAngl1)
+ dAngl2 += M_PI * 2;
+
+ //
+ // GpiPointArc can't draw full arc
+ //
+ if(dAngl2 == dAngl1 || (vX1 == vX2 && vY1 == vY2) )
+ {
+ //
+ // Medium point
+ //
+ dAnglmid = (dAngl1 + dAngl2)/2. + M_PI;
+ vXm = vXc + dRadius * cos(dAnglmid);
+ vYm = vYc + dRadius * sin(dAnglmid);
+ DoDrawArc( vX1
+ ,vY1
+ ,vXm
+ ,vYm
+ ,vXc
+ ,vYc
+ );
+ DoDrawArc( vXm
+ ,vYm
+ ,vX2
+ ,vY2
+ ,vXc
+ ,vYc
+ );
+ return;
+ }
+
+ //
+ // Medium point
+ //
+ dAnglmid = (dAngl1 + dAngl2)/2.;
+ vXm = vXc + dRadius * cos(dAnglmid);
+ vYm = vYc + dRadius * sin(dAnglmid);
+
+ //
+ // Ellipse main axis (r,q), (p,s) with center at (0,0) */
+ //
+ vArcp.lR = 0;
+ vArcp.lQ = 1;
+ vArcp.lP = 1;
+ vArcp.lS = 0;
+ ::GpiSetArcParams(m_hPS, &vArcp); // Sets parameters to default
+
+ vPtlPos.x = vX1; // Loads x-coordinate
+ vPtlPos.y = vY1; // Loads y-coordinate
+ ::GpiMove(m_hPS, &vPtlPos); // Sets current position
+ vPtlArc[0].x = vXm;
+ vPtlArc[0].y = vYm;
+ vPtlArc[1].x = vX2;
+ vPtlArc[1].y = vY2;
+ ::GpiPointArc(m_hPS, vPtlArc); // Draws the arc
+}
-void wxDC::SetInternalDeviceOrigin( long x, long y )
+void wxDC::DoDrawCheckMark(
+ wxCoord vX1
+, wxCoord vY1
+, wxCoord vWidth
+, wxCoord vHeight
+)
{
- // TODO:
-};
+ POINTL vPoint[2];
+
+ vPoint[0].x = vX1;
+ vPoint[0].y = vY1;
+ vPoint[1].x = vX1 + vWidth;
+ vPoint[1].y = vY1 + vHeight;
+
+ ::GpiMove(m_hPS, &vPoint[0]);
+ ::GpiBox( m_hPS // handle to a presentation space
+ ,DRO_OUTLINE // draw the box outline ? or ?
+ ,&vPoint[1] // address of the corner
+ ,0L // horizontal corner radius
+ ,0L // vertical corner radius
+ );
+ if(vWidth > 4 && vHeight > 4)
+ {
+ int nTmp;
+
+ vPoint[0].x += 2; vPoint[0].y += 2;
+ vPoint[1].x -= 2; vPoint[1].y -= 2;
+ ::GpiMove(m_hPS, &vPoint[0]);
+ ::GpiLine(m_hPS, &vPoint[1]);
+ nTmp = vPoint[0].x;
+ vPoint[0].x = vPoint[1].x;
+ vPoint[1].x = nTmp;
+ ::GpiMove(m_hPS, &vPoint[0]);
+ ::GpiLine(m_hPS, &vPoint[1]);
+ }
+}
-void wxDC::GetInternalDeviceOrigin( long *x, long *y )
+void wxDC::DoDrawPoint(
+ wxCoord vX
+, wxCoord vY
+)
{
- // TODO:
-};
+ POINTL vPoint;
-void wxDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
+ vPoint.x = vX;
+ vPoint.y = vY;
+ ::GpiSetPel(m_hPS, &vPoint);
+}
+
+void wxDC::DoDrawPolygon(
+ int n
+, wxPoint vPoints[]
+, wxCoord vXoffset
+, wxCoord vYoffset
+, int nFillStyle
+)
{
- // TODO:
-};
+ ULONG ulCount = 1; // Number of polygons.
+ POLYGON vPlgn; // polygon.
+ ULONG flOptions = 0L; // Drawing options.
+
+//////////////////////////////////////////////////////////////////////////////
+// This contains fields of option bits... to draw boundary lines as well as
+// the area interior.
+//
+// Drawing boundary lines:
+// POLYGON_NOBOUNDARY Does not draw boundary lines.
+// POLYGON_BOUNDARY Draws boundary lines (the default).
+//
+// Construction of the area interior:
+// POLYGON_ALTERNATE Constructs interior in alternate mode
+// (the default).
+// POLYGON_WINDING Constructs interior in winding mode.
+//////////////////////////////////////////////////////////////////////////////
+
+ ULONG flModel = 0L; // Drawing model.
+
+//////////////////////////////////////////////////////////////////////////////
+// Drawing model.
+// POLYGON_INCL Fill is inclusive of bottom right (the default).
+// POLYGON_EXCL Fill is exclusive of bottom right.
+// This is provided to aid migration from other graphics models.
+//////////////////////////////////////////////////////////////////////////////
+
+ LONG lHits = 0L; // Correlation/error indicator.
+ POINTL vPoint;
+ int i;
+ int nIsTRANSPARENT = 0;
+ LONG lBorderColor = 0L;
+ LONG lColor = 0L;
+
+ lBorderColor = m_pen.GetColour().GetPixel();
+ lColor = m_brush.GetColour().GetPixel();
+ if(m_brush.GetStyle() == wxTRANSPARENT)
+ nIsTRANSPARENT = 1;
+
+ vPlgn.ulPoints = n;
+ vPlgn.aPointl = (POINTL*) calloc( n + 1
+ ,sizeof(POINTL)
+ ); // well, new will call malloc
+
+ for(i = 0; i < n; i++)
+ {
+ vPlgn.aPointl[i].x = vPoints[i].x; // +xoffset;
+ vPlgn.aPointl[i].y = vPoints[i].y; // +yoffset;
+ }
+ flModel = POLYGON_BOUNDARY;
+ if(nFillStyle == wxWINDING_RULE)
+ flModel |= POLYGON_WINDING;
+ else
+ flModel |= POLYGON_ALTERNATE;
+ vPoint.x = vXoffset;
+ vPoint.y = vYoffset;
-int wxDC::GetDepth() const
+ ::GpiSetColor(m_hPS, lBorderColor);
+ ::GpiMove(m_hPS, &vPoint);
+ lHits = ::GpiPolygons(m_hPS, ulCount, &vPlgn, flOptions, flModel);
+ free(vPlgn.aPointl);
+}
+
+void wxDC::DoDrawLines(
+ int n
+, wxPoint vPoints[]
+, wxCoord vXoffset
+, wxCoord vYoffset
+)
{
- // TODO:
- return (1);
+ int i;
+ POINTL vPoint;
+
+ vPoint.x = vPoints[0].x + vXoffset;
+ vPoint.y = vPoints[0].y + vYoffset;
+ ::GpiMove(m_hPS, &vPoint);
+
+ LONG lBorderColor = m_pen.GetColour().GetPixel();
+
+ ::GpiSetColor(m_hPS, lBorderColor);
+ for(i = 1; i < n; i++)
+ {
+ vPoint.x = vPoints[0].x + vXoffset;
+ vPoint.y = vPoints[0].y + vYoffset;
+ ::GpiLine(m_hPS, &vPoint);
+ }
}
-wxSize wxDC::GetPPI() const
+void wxDC::DoDrawRectangle(
+ wxCoord vX
+, wxCoord vY
+, wxCoord vWidth
+, wxCoord vHeight
+)
{
- int x = 1;
- int y = 1;
- // TODO:
- return (wxSize(x,y));
+ POINTL vPoint[2];
+ LONG lControl;
+ LONG lColor;
+ LONG lBorderColor;
+ int nIsTRANSPARENT = 0;
+
+ vPoint[0].x = vX;
+ vPoint[0].y = vY;
+ vPoint[1].x = vX + vWidth;
+ vPoint[1].y = vY - vHeight;
+ ::GpiMove(m_hPS, &vPoint[0]);
+ lColor = m_brush.GetColour().GetPixel();
+ lBorderColor = m_pen.GetColour().GetPixel();
+ if (m_brush.GetStyle() == wxTRANSPARENT)
+ nIsTRANSPARENT = 1;
+ if(lColor == lBorderColor || nIsTRANSPARENT)
+ {
+ lControl = DRO_OUTLINEFILL; //DRO_FILL;
+ if(m_brush.GetStyle() == wxTRANSPARENT)
+ lControl = DRO_OUTLINE;
+
+ ::GpiSetColor(m_hPS, CLR_GREEN);
+ ::GpiBox( m_hPS // handle to a presentation space
+ ,lControl // draw the box outline ? or ?
+ ,&vPoint[1] // address of the corner
+ ,0L // horizontal corner radius
+ ,0L // vertical corner radius
+ );
+ }
+ else
+ {
+ lControl = DRO_OUTLINE;
+ ::GpiSetColor( m_hPS
+ ,lBorderColor
+ );
+ ::GpiBox( m_hPS
+ ,lControl
+ ,&vPoint[1]
+ ,0L
+ ,0L
+ );
+ lControl = DRO_FILL;
+ ::GpiSetColor( m_hPS
+ ,lColor
+ );
+ ::GpiBox( m_hPS
+ ,lControl
+ ,&vPoint[1]
+ ,0L
+ ,0L
+ );
+ }
}
-void wxDC::GetTextExtent( const wxString& string
- ,long* x
- ,long* y
- ,long* decent
- ,long* externalLeading
- ,wxFont* theFont
- ) const
+
+void wxDC::DoDrawRoundedRectangle(
+ wxCoord vX
+, wxCoord vY
+, wxCoord vWidth
+, wxCoord vHeight
+, double dRadius
+)
{
- // TODO:
+ POINTL vPoint[2];
+ LONG lControl;
+
+ vPoint[0].x = vX;
+ vPoint[0].y = vY;
+ vPoint[1].x = vX + vWidth;
+ vPoint[1].y = vY + vHeight;
+ ::GpiMove(m_hPS, &vPoint[0]);
+
+ lControl = DRO_OUTLINEFILL; //DRO_FILL;
+ if (m_brush.GetStyle() == wxTRANSPARENT)
+ lControl = DRO_OUTLINE;
+ ::GpiBox( m_hPS // handle to a presentation space
+ ,DRO_OUTLINE // draw the box outline ? or ?
+ ,&vPoint[1] // address of the corner
+ ,(LONG)dRadius // horizontal corner radius
+ ,(LONG)dRadius // vertical corner radius
+ );
}
-long wxDC::GetCharWidth() const
+// Draw Ellipse within box (x,y) - (x+width, y+height)
+void wxDC::DoDrawEllipse(
+ wxCoord vX
+, wxCoord vY
+, wxCoord vWidth
+, wxCoord vHeight
+)
{
- // TODO
- return(1);
+ POINTL vPtlPos; // Structure for current position
+ FIXED vFxMult; // Multiplier for ellipse
+ ARCPARAMS vArcp; // Structure for arc parameters
+
+ vArcp.lR = 0;
+ vArcp.lQ = vHeight/2;
+ vArcp.lP = vWidth/2;
+ vArcp.lS = 0;
+ ::GpiSetArcParams( m_hPS
+ ,&vArcp
+ ); // Sets parameters to default
+ vPtlPos.x = vX + vWidth/2; // Loads x-coordinate
+ vPtlPos.y = vY + vHeight/2; // Loads y-coordinate
+ ::GpiMove( m_hPS
+ ,&vPtlPos
+ ); // Sets current position
+ vFxMult = MAKEFIXED(1, 0); /* Sets multiplier */
+
+ //
+ // DRO_FILL, DRO_OTLINEFILL - where to get
+ //
+ ::GpiFullArc( m_hPS
+ ,DRO_OUTLINE
+ ,vFxMult
+ ); // Draws full arc with center at current position
}
-long wxDC::GetCharHeight() const
+void wxDC::DoDrawEllipticArc(
+ wxCoord vX
+, wxCoord vY
+, wxCoord vWidth
+, wxCoord vHeight
+, double dSa
+, double dEa
+)
{
- // TODO
- return(1);
+ POINTL vPtlPos; // Structure for current position
+ FIXED vFxMult; // Multiplier for ellipse
+ ARCPARAMS vArcp; // Structure for arc parameters
+ FIXED vFSa;
+ FIXED vFSweepa; // Start angle, sweep angle
+ double dIntPart;
+ double dFractPart;
+ double dRadius;
+
+ dFractPart = modf(dSa,&dIntPart);
+ vFSa = MAKEFIXED((int)dIntPart, (int)(dFractPart * 0xffff) );
+ dFractPart = modf(dEa - dSa, &dIntPart);
+ vFSweepa = MAKEFIXED((int)dIntPart, (int)(dFractPart * 0xffff) );
+
+ //
+ // Ellipse main axis (r,q), (p,s) with center at (0,0)
+ //
+ vArcp.lR = 0;
+ vArcp.lQ = vHeight/2;
+ vArcp.lP = vWidth/2;
+ vArcp.lS = 0;
+ ::GpiSetArcParams(m_hPS, &vArcp); // Sets parameters to default
+ vPtlPos.x = vX + vWidth/2 * (1. + cos(DegToRad(dSa))); // Loads x-coordinate
+ vPtlPos.y = vY + vHeight/2 * (1. + sin(DegToRad(dSa))); // Loads y-coordinate
+ ::GpiMove(m_hPS, &vPtlPos); // Sets current position
+
+ //
+ // May be not to the center ?
+ //
+ vPtlPos.x = vX + vWidth/2 ; // Loads x-coordinate
+ vPtlPos.y = vY + vHeight/2; // Loads y-coordinate
+ vFxMult = MAKEFIXED(1, 0); // Sets multiplier
+
+ //
+ // DRO_FILL, DRO_OTLINEFILL - where to get
+ //
+ ::GpiPartialArc( m_hPS
+ ,&vPtlPos
+ ,vFxMult
+ ,vFSa
+ ,vFSweepa
+ );
}
-void wxDC::Clear()
+void wxDC::DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y)
{
- // TODO
+ // TODO:
}
-void wxDC::SetFont(const wxFont& font)
+void wxDC::DoDrawBitmap( const wxBitmap &bmp
+ ,wxCoord x, wxCoord y
+ ,bool useMask
+ )
{
// TODO
}
-void wxDC::SetPen(const wxPen& pen)
+void wxDC::DoDrawText(
+ const wxString& rsText
+, wxCoord vX
+, wxCoord vY
+)
+{
+ DrawAnyText( rsText
+ ,vX
+ ,vY
+ );
+}
+
+void wxDC::DrawAnyText(
+ const wxString& rsText
+, wxCoord vX
+, wxCoord vY
+)
+{
+ int nOldBackground = 0;
+ POINTL vPtlStart;
+ LONG lHits;
+
+ //
+ // prepare for drawing the text
+ //
+
+ //
+ // Set text color attributes
+ //
+ if (m_textForegroundColour.Ok())
+ {
+ SetTextColor( m_hPS
+ ,(int)m_textForegroundColour.GetPixel()
+ );
+ }
+
+ if (m_textBackgroundColour.Ok())
+ {
+ nOldBackground = SetTextBkColor( m_hPS
+ ,(int)m_textBackgroundColour.GetPixel()
+ );
+ }
+ SetBkMode( m_hPS
+ ,m_backgroundMode
+ );
+ vPtlStart.x = vX;
+ vPtlStart.y = vY;
+
+ lHits = ::GpiCharStringAt( m_hPS
+ ,&vPtlStart
+ ,rsText.length()
+ ,(PCH)rsText.c_str()
+ );
+ if (lHits != GPI_OK)
+ {
+ wxLogLastError(wxT("TextOut"));
+ }
+
+ //
+ // Restore the old parameters (text foreground colour may be left because
+ // it never is set to anything else, but background should remain
+ // transparent even if we just drew an opaque string)
+ //
+ if (m_textBackgroundColour.Ok())
+ SetTextBkColor( m_hPS
+ ,nOldBackground
+ );
+ SetBkMode( m_hPS
+ ,wxTRANSPARENT
+ );
+}
+
+void wxDC::DoDrawRotatedText(
+ const wxString& rsText
+, wxCoord vX
+, wxCoord vY
+, double dAngle
+)
+{
+ if (dAngle == 0.0)
+ {
+ DoDrawText( rsText
+ ,vX
+ ,vY
+ );
+ }
+
+ // TODO:
+ /*
+ if ( angle == 0.0 )
+ {
+ DoDrawText(text, x, y);
+ }
+ else
+ {
+ LOGFONT lf;
+ wxFillLogFont(&lf, &m_font);
+
+ // GDI wants the angle in tenth of degree
+ long angle10 = (long)(angle * 10);
+ lf.lfEscapement = angle10;
+ lf. lfOrientation = angle10;
+
+ HFONT hfont = ::CreateFontIndirect(&lf);
+ if ( !hfont )
+ {
+ wxLogLastError("CreateFont");
+ }
+ else
+ {
+ HFONT hfontOld = ::SelectObject(GetHdc(), hfont);
+
+ DrawAnyText(text, x, y);
+
+ (void)::SelectObject(GetHdc(), hfontOld);
+ }
+
+ // call the bounding box by adding all four vertices of the rectangle
+ // containing the text to it (simpler and probably not slower than
+ // determining which of them is really topmost/leftmost/...)
+ wxCoord w, h;
+ GetTextExtent(text, &w, &h);
+
+ double rad = DegToRad(angle);
+
+ // "upper left" and "upper right"
+ CalcBoundingBox(x, y);
+ CalcBoundingBox(x + w*cos(rad), y - h*sin(rad));
+ CalcBoundingBox(x + h*sin(rad), y + h*cos(rad));
+
+ // "bottom left" and "bottom right"
+ x += (wxCoord)(h*sin(rad));
+ y += (wxCoord)(h*cos(rad));
+ CalcBoundingBox(x, y);
+ CalcBoundingBox(x + h*sin(rad), y + h*cos(rad));
+ }
+*/
+}
+
+// ---------------------------------------------------------------------------
+// set GDI objects
+// ---------------------------------------------------------------------------
+
+void wxDC::SetPalette(const wxPalette& palette)
{
// TODO
}
-void wxDC::SetBrush(const wxBrush& brush)
+
+void wxDC::SetFont(
+ const wxFont& rFont
+)
+{
+ //
+ // Set the old object temporarily, in case the assignment deletes an object
+ // that's not yet selected out.
+ //
+ if (m_hOldFont)
+ {
+// ::SelectObject(GetHdc(), (HFONT) m_hOldFont);
+ m_hOldFont = 0;
+ }
+
+ m_font = rFont;
+
+ if (!rFont.Ok())
+ {
+ if (m_hOldFont)
+// ::SelectObject(GetHdc(), (HFONT) m_hOldFont);
+ m_hOldFont = 0;
+ }
+
+ if (m_font.Ok() && m_font.GetResourceHandle())
+ {
+ HFONT hFont = (HFONT)0; //::SelectObject(GetHdc(), (HFONT) m_font.GetResourceHandle());
+ if (hFont == (HFONT) NULL)
+ {
+ wxLogDebug(wxT("::SelectObject failed in wxDC::SetFont."));
+ }
+ if (!m_hOldFont)
+ m_hOldFont = (WXHFONT) hFont;
+ }
+}
+
+void wxDC::SetPen(
+ const wxPen& rPen
+)
+{
+ wxCHECK_RET( Ok(), wxT("invalid window dc") );
+
+ if (m_pen == rPen)
+ return;
+ m_pen = rPen;
+ if (!m_pen.Ok())
+ return;
+
+ if (m_hOldPen)
+ m_hOldPen = 0L;
+ m_pen = rPen;
+
+ if (!m_pen.Ok())
+ {
+ if (m_hOldPen)
+ {
+ m_pen.SetPS((HPS)m_hOldPen);
+ }
+ m_hOldPen = 0L;
+ }
+
+ if (m_pen.Ok())
+ {
+ if (m_pen.GetResourceHandle())
+ {
+ m_pen.SetPS(m_hPS);
+ if (!m_hOldPen)
+ m_hOldPen = m_pen.GetPS();
+ }
+ }
+
+}
+
+void wxDC::SetBrush(
+ const wxBrush& rBrush
+)
{
// TODO
}
// TODO
}
+void wxDC::SetBackgroundMode(
+ int nMode
+)
+{
+ m_backgroundMode = nMode;
+}
+
void wxDC::SetLogicalFunction(int function)
{
// TODO
}
-void wxDC::SetBackgroundMode(int mode)
+void wxDC::SetRop(WXHDC dc)
{
- // TODO
+ if (!dc || m_logicalFunction < 0)
+ return;
+
+ int c_rop;
+ // These may be wrong
+ switch (m_logicalFunction)
+ {
+// TODO: Figure this stuff out
+ // case wxXOR: c_rop = R2_XORPEN; break;
+// case wxXOR: c_rop = R2_NOTXORPEN; break;
+// case wxINVERT: c_rop = R2_NOT; break;
+// case wxOR_REVERSE: c_rop = R2_MERGEPENNOT; break;
+// case wxAND_REVERSE: c_rop = R2_MASKPENNOT; break;
+// case wxCLEAR: c_rop = R2_WHITE; break;
+// case wxSET: c_rop = R2_BLACK; break;
+// case wxSRC_INVERT: c_rop = R2_NOTCOPYPEN; break;
+// case wxOR_INVERT: c_rop = R2_MERGENOTPEN; break;
+// case wxAND: c_rop = R2_MASKPEN; break;
+// case wxOR: c_rop = R2_MERGEPEN; break;
+// case wxAND_INVERT: c_rop = R2_MASKNOTPEN; break;
+// case wxEQUIV:
+// case wxNAND:
+// case wxCOPY:
+ default:
+// c_rop = R2_COPYPEN;
+ break;
+ }
+// SetROP2((HDC) dc, c_rop);
}
-void wxDC::SetPalette(const wxPalette& palette)
+bool wxDC::StartDoc(const wxString& message)
{
- // TODO
+ // We might be previewing, so return TRUE to let it continue.
+ return TRUE;
}
-void wxDC::DoFloodFill( long x
- ,long y
- ,const wxColour& col
- ,int style
- )
+void wxDC::EndDoc()
{
- // TODO
}
-bool wxDC::DoGetPixel(long x, long y, wxColour *col) const
+void wxDC::StartPage()
{
- // TODO
- return(TRUE);
}
-void wxDC::DoDrawPoint(long x, long y)
+void wxDC::EndPage()
{
- // TODO
}
-void wxDC::DoDrawLine(long x1, long y1, long x2, long y2)
+// ---------------------------------------------------------------------------
+// text metrics
+// ---------------------------------------------------------------------------
+
+wxCoord wxDC::GetCharHeight() const
{
- // TODO
+ // TODO
+ return(8);
}
-void wxDC::DoDrawArc( long x1, long y1
- ,long x2, long y2
- ,long xc, long yc
- )
+wxCoord wxDC::GetCharWidth() const
{
- // TODO
+ // TODO
+ return(8);
}
-void wxDC::DoDrawEllipticArc( long x
- ,long y
- ,long w
- ,long h
- ,double sa
- ,double ea
- )
+void wxDC::DoGetTextExtent(
+ const wxString& rsString
+, wxCoord* pvX
+, wxCoord* pvY
+, wxCoord* pvDescent
+, wxCoord* pvExternalLeading
+, wxFont* pTheFont
+) const
{
- // TODO
+ POINTL avPoint[TXTBOX_COUNT];
+ POINTL vPtMin;
+ POINTL vPtMax;
+ int i;
+ int l;
+ FONTMETRICS vFM; // metrics structure
+ BOOL bRc;
+ char* pStr;
+ ERRORID vErrorCode; // last error id code
+ wxFont* pFontToUse = (wxFont*)pTheFont;
+
+ if (!pFontToUse)
+ pFontToUse = (wxFont*)&m_font;
+ l = rsString.length();
+ pStr = (PCH) rsString.c_str();
+
+ //
+ // In world coordinates.
+ //
+ bRc = ::GpiQueryTextBox( m_hPS
+ ,l
+ ,pStr
+ ,TXTBOX_COUNT // return maximum information
+ ,avPoint // array of coordinates points
+ );
+ if(!bRc)
+ {
+ vErrorCode = ::WinGetLastError(wxGetInstance());
+ }
+
+ vPtMin.x = avPoint[0].x;
+ vPtMax.x = avPoint[0].x;
+ vPtMin.y = avPoint[0].y;
+ vPtMax.y = avPoint[0].y;
+ for (i = 1; i < 4; i++)
+ {
+ if(vPtMin.x > avPoint[i].x) vPtMin.x = avPoint[i].x;
+ if(vPtMin.y > avPoint[i].y) vPtMin.y = avPoint[i].y;
+ if(vPtMax.x < avPoint[i].x) vPtMax.x = avPoint[i].x;
+ if(vPtMax.y < avPoint[i].y) vPtMax.y = avPoint[i].y;
+ }
+ ::GpiQueryFontMetrics( m_hPS
+ ,sizeof(FONTMETRICS)
+ ,&vFM
+ );
+
+ if (pvX)
+ *pvX = (wxCoord)(vPtMax.x - vPtMin.x + 1);
+ if (pvY)
+ *pvY = (wxCoord)(vPtMax.y - vPtMin.y + 1);
+ if (pvDescent)
+ *pvDescent = vFM.lMaxDescender;
+ if (pvExternalLeading)
+ *pvExternalLeading = vFM.lExternalLeading;
}
-void wxDC::DoDrawRectangle(long x, long y, long width, long height)
+void wxDC::SetMapMode( int mode )
{
- // TODO
+ // TODO:
+};
+
+void wxDC::SetUserScale(double x, double y)
+{
+ m_userScaleX = x;
+ m_userScaleY = y;
+
+ SetMapMode(m_mappingMode);
}
-void wxDC::DoDrawRoundedRectangle( long x, long y
- ,long width, long height
- ,double radius
- )
+void wxDC::SetAxisOrientation(bool xLeftRight, bool yBottomUp)
{
- // TODO
+ m_signX = xLeftRight ? 1 : -1;
+ m_signY = yBottomUp ? -1 : 1;
+
+ SetMapMode(m_mappingMode);
}
-void wxDC::DoDrawEllipse(long x, long y, long width, long height)
+void wxDC::SetSystemScale(double x, double y)
{
- // TODO
+ m_scaleX = x;
+ m_scaleY = y;
+
+ SetMapMode(m_mappingMode);
}
-void wxDC::DoCrossHair(long x, long y)
+void wxDC::SetLogicalOrigin( wxCoord x, wxCoord y )
{
- // TODO
+ // TODO:
+};
+
+void wxDC::SetDeviceOrigin( wxCoord x, wxCoord y )
+{
+ RECTL vRect;
+
+ ::GpiQueryPageViewport( m_hPS
+ ,&vRect
+ );
+ vRect.xLeft += x;
+ vRect.xRight += x;
+ vRect.yBottom -= y;
+ vRect.yTop -= y;
+ ::GpiSetPageViewport( m_hPS
+ ,&vRect
+ );
+};
+
+// ---------------------------------------------------------------------------
+// coordinates transformations
+// ---------------------------------------------------------------------------
+
+wxCoord wxDCBase::DeviceToLogicalX(wxCoord x) const
+{
+ return (wxCoord) (((x) - m_deviceOriginX)/(m_logicalScaleX*m_userScaleX*m_signX*m_scaleX) - m_logicalOriginX);
}
-void wxDC::DoDrawIcon(const wxIcon& icon, long x, long y)
+wxCoord wxDCBase::DeviceToLogicalXRel(wxCoord x) const
{
- // TODO
+ return (wxCoord) ((x)/(m_logicalScaleX*m_userScaleX*m_signX*m_scaleX));
}
-void wxDC::DoDrawBitmap( const wxBitmap &bmp
- ,long x, long y
- ,bool useMask
- )
+wxCoord wxDCBase::DeviceToLogicalY(wxCoord y) const
{
- // TODO
+ return (wxCoord) (((y) - m_deviceOriginY)/(m_logicalScaleY*m_userScaleY*m_signY*m_scaleY) - m_logicalOriginY);
}
-void wxDC::DoDrawText(const wxString& text, long x, long y)
+wxCoord wxDCBase::DeviceToLogicalYRel(wxCoord y) const
{
- // TODO
+ return (wxCoord) ((y)/(m_logicalScaleY*m_userScaleY*m_signY*m_scaleY));
+}
+
+wxCoord wxDCBase::LogicalToDeviceX(wxCoord x) const
+{
+ return (wxCoord) ((x - m_logicalOriginX)*m_logicalScaleX*m_userScaleX*m_signX*m_scaleX + m_deviceOriginX);
+}
+
+wxCoord wxDCBase::LogicalToDeviceXRel(wxCoord x) const
+{
+ return (wxCoord) (x*m_logicalScaleX*m_userScaleX*m_signX*m_scaleX);
+}
+
+wxCoord wxDCBase::LogicalToDeviceY(wxCoord y) const
+{
+ return (wxCoord) ((y - m_logicalOriginY)*m_logicalScaleY*m_userScaleY*m_signY*m_scaleY + m_deviceOriginY);
+}
+
+wxCoord wxDCBase::LogicalToDeviceYRel(wxCoord y) const
+{
+ return (wxCoord) (y*m_logicalScaleY*m_userScaleY*m_signY*m_scaleY);
}
-bool wxDC::DoBlit( long xdest
- ,long ydest
- ,long width
- ,long height
+// ---------------------------------------------------------------------------
+// bit blit
+// ---------------------------------------------------------------------------
+
+bool wxDC::DoBlit( wxCoord xdest
+ ,wxCoord ydest
+ ,wxCoord width
+ ,wxCoord height
,wxDC *source
- ,long xsrc
- ,long ysrc
+ ,wxCoord xsrc
+ ,wxCoord ysrc
,int rop
,bool useMask
)
return(TRUE);
}
-void wxDC::DoDrawLines( int n, wxPoint points[]
- ,long xoffset, long yoffset
- )
+void wxDC::DoGetSize( int* width, int* height ) const
{
- // TODO
+ // TODO:
+};
+
+void wxDC::DoGetSizeMM( int* width, int* height ) const
+{
+ // TODO:
+};
+
+wxSize wxDC::GetPPI() const
+{
+ int x = 1;
+ int y = 1;
+ // TODO:
+ return (wxSize(x,y));
}
-void wxDC::DoDrawPolygon(int n, wxPoint points[]
- ,long xoffset, long yoffset
- ,int fillStyle
- )
+void wxDC::SetLogicalScale( double x, double y )
{
- // TODO
+ // TODO:
+};
+
+#if WXWIN_COMPATIBILITY
+void wxDC::DoGetTextExtent(const wxString& string, float *x, float *y,
+ float *descent, float *externalLeading,
+ wxFont *theFont, bool use16bit) const
+{
+ wxCoord x1, y1, descent1, externalLeading1;
+ GetTextExtent(string, & x1, & y1, & descent1, & externalLeading1, theFont, use16bit);
+ *x = x1; *y = y1;
+ if (descent)
+ *descent = descent1;
+ if (externalLeading)
+ *externalLeading = externalLeading1;
}
+#endif
-void wxDC::DoSetClippingRegionAsRegion(const wxRegion& region)
+// ---------------------------------------------------------------------------
+// spline drawing code
+// ---------------------------------------------------------------------------
+
+#if wxUSE_SPLINES
+
+class wxSpline: public wxObject
{
- // TODO
+public:
+ int type;
+ wxList *points;
+
+ wxSpline(wxList *list);
+ void DeletePoints();
+
+ // Doesn't delete points
+ ~wxSpline();
+};
+
+void wx_draw_open_spline(wxDC *dc, wxSpline *spline);
+
+void wx_quadratic_spline(double a1, double b1, double a2, double b2,
+ double a3, double b3, double a4, double b4);
+void wx_clear_stack();
+int wx_spline_pop(double *x1, double *y1, double *x2, double *y2, double *x3,
+ double *y3, double *x4, double *y4);
+void wx_spline_push(double x1, double y1, double x2, double y2, double x3, double y3,
+ double x4, double y4);
+static bool wx_spline_add_point(double x, double y);
+static void wx_spline_draw_point_array(wxDC *dc);
+wxSpline *wx_make_spline(int x1, int y1, int x2, int y2, int x3, int y3);
+
+void wxDC::DoDrawSpline(wxList *list)
+{
+ wxSpline spline(list);
+
+ wx_draw_open_spline(this, &spline);
}
-void wxDC::DoSetClippingRegion( long x, long y
- ,long width, long height
- )
+wxList wx_spline_point_list;
+
+void wx_draw_open_spline(wxDC *dc, wxSpline *spline)
{
- // TODO
+ wxPoint *p;
+ double cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4;
+ double x1, y1, x2, y2;
+
+ wxNode *node = spline->points->First();
+ p = (wxPoint *)node->Data();
+
+ x1 = p->x;
+ y1 = p->y;
+
+ node = node->Next();
+ p = (wxPoint *)node->Data();
+
+ x2 = p->x;
+ y2 = p->y;
+ cx1 = (double)((x1 + x2) / 2);
+ cy1 = (double)((y1 + y2) / 2);
+ cx2 = (double)((cx1 + x2) / 2);
+ cy2 = (double)((cy1 + y2) / 2);
+
+ wx_spline_add_point(x1, y1);
+
+ while ((node = node->Next()) != NULL)
+ {
+ p = (wxPoint *)node->Data();
+ x1 = x2;
+ y1 = y2;
+ x2 = p->x;
+ y2 = p->y;
+ cx4 = (double)(x1 + x2) / 2;
+ cy4 = (double)(y1 + y2) / 2;
+ cx3 = (double)(x1 + cx4) / 2;
+ cy3 = (double)(y1 + cy4) / 2;
+
+ wx_quadratic_spline(cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4);
+
+ cx1 = cx4;
+ cy1 = cy4;
+ cx2 = (double)(cx1 + x2) / 2;
+ cy2 = (double)(cy1 + y2) / 2;
+ }
+
+ wx_spline_add_point((double)wx_round(cx1), (double)wx_round(cy1));
+ wx_spline_add_point(x2, y2);
+
+ wx_spline_draw_point_array(dc);
+
}
-#if wxUSE_SPLINES
-void wxDC::DoDrawSpline(wxList *points)
+/********************* CURVES FOR SPLINES *****************************
+
+ The following spline drawing routine is from
+
+ "An Algorithm for High-Speed Curve Generation"
+ by George Merrill Chaikin,
+ Computer Graphics and Image Processing, 3, Academic Press,
+ 1974, 346-349.
+
+ and
+
+ "On Chaikin's Algorithm" by R. F. Riesenfeld,
+ Computer Graphics and Image Processing, 4, Academic Press,
+ 1975, 304-310.
+
+***********************************************************************/
+
+#define half(z1, z2) ((z1+z2)/2.0)
+#define THRESHOLD 5
+
+/* iterative version */
+
+void wx_quadratic_spline(double a1, double b1, double a2, double b2, double a3, double b3, double a4,
+ double b4)
{
- // TODO
+ register double xmid, ymid;
+ double x1, y1, x2, y2, x3, y3, x4, y4;
+
+ wx_clear_stack();
+ wx_spline_push(a1, b1, a2, b2, a3, b3, a4, b4);
+
+ while (wx_spline_pop(&x1, &y1, &x2, &y2, &x3, &y3, &x4, &y4)) {
+ xmid = (double)half(x2, x3);
+ ymid = (double)half(y2, y3);
+ if (fabs(x1 - xmid) < THRESHOLD && fabs(y1 - ymid) < THRESHOLD &&
+ fabs(xmid - x4) < THRESHOLD && fabs(ymid - y4) < THRESHOLD) {
+ wx_spline_add_point((double)wx_round(x1), (double)wx_round(y1));
+ wx_spline_add_point((double)wx_round(xmid), (double)wx_round(ymid));
+ } else {
+ wx_spline_push(xmid, ymid, (double)half(xmid, x3), (double)half(ymid, y3),
+ (double)half(x3, x4), (double)half(y3, y4), x4, y4);
+ wx_spline_push(x1, y1, (double)half(x1, x2), (double)half(y1, y2),
+ (double)half(x2, xmid), (double)half(y2, ymid), xmid, ymid);
+ }
+ }
+}
+
+
+/* utilities used by spline drawing routines */
+
+
+typedef struct wx_spline_stack_struct {
+ double x1, y1, x2, y2, x3, y3, x4, y4;
+}
+Stack;
+
+#define SPLINE_STACK_DEPTH 20
+static Stack wx_spline_stack[SPLINE_STACK_DEPTH];
+static Stack *wx_stack_top;
+static int wx_stack_count;
+
+void wx_clear_stack()
+{
+ wx_stack_top = wx_spline_stack;
+ wx_stack_count = 0;
+}
+
+void wx_spline_push(double x1, double y1, double x2, double y2, double x3, double y3, double x4, double y4)
+{
+ wx_stack_top->x1 = x1;
+ wx_stack_top->y1 = y1;
+ wx_stack_top->x2 = x2;
+ wx_stack_top->y2 = y2;
+ wx_stack_top->x3 = x3;
+ wx_stack_top->y3 = y3;
+ wx_stack_top->x4 = x4;
+ wx_stack_top->y4 = y4;
+ wx_stack_top++;
+ wx_stack_count++;
+}
+
+int wx_spline_pop(double *x1, double *y1, double *x2, double *y2,
+ double *x3, double *y3, double *x4, double *y4)
+{
+ if (wx_stack_count == 0)
+ return (0);
+ wx_stack_top--;
+ wx_stack_count--;
+ *x1 = wx_stack_top->x1;
+ *y1 = wx_stack_top->y1;
+ *x2 = wx_stack_top->x2;
+ *y2 = wx_stack_top->y2;
+ *x3 = wx_stack_top->x3;
+ *y3 = wx_stack_top->y3;
+ *x4 = wx_stack_top->x4;
+ *y4 = wx_stack_top->y4;
+ return (1);
+}
+
+static bool wx_spline_add_point(double x, double y)
+{
+ wxPoint *point = new wxPoint;
+ point->x = (int) x;
+ point->y = (int) y;
+ wx_spline_point_list.Append((wxObject*)point);
+ return TRUE;
+}
+
+static void wx_spline_draw_point_array(wxDC *dc)
+{
+ dc->DrawLines(&wx_spline_point_list, 0, 0);
+ wxNode *node = wx_spline_point_list.First();
+ while (node)
+ {
+ wxPoint *point = (wxPoint *)node->Data();
+ delete point;
+ delete node;
+ node = wx_spline_point_list.First();
+ }
+}
+
+wxSpline::wxSpline(wxList *list)
+{
+ points = list;
+}
+
+wxSpline::~wxSpline()
+{
+}
+
+void wxSpline::DeletePoints()
+{
+ for(wxNode *node = points->First(); node; node = points->First())
+ {
+ wxPoint *point = (wxPoint *)node->Data();
+ delete point;
+ delete node;
+ }
+ delete points;
}
-#endif
-//
-// Private functions
-//
+#endif // wxUSE_SPLINES
projects / wxWidgets.git / blobdiff