[wxWidgets.git] / src / cocoa / dc.mm

/////////////////////////////////////////////////////////////////////////////
// Name:        src/cocoa/dc.mm
// Purpose:     wxDC
// Author:      David Elliott
// Modified by:
// Created:     2003/04/01
// RCS-ID:      $Id$
// Copyright:   (c) 2003 David Elliott
// Licence:   	wxWindows license
/////////////////////////////////////////////////////////////////////////////

#include "wx/dc.h"
#include "wx/log.h"

#import <AppKit/NSBezierPath.h>
#import <AppKit/NSTextStorage.h>
#import <AppKit/NSLayoutManager.h>
#import <AppKit/NSTextContainer.h>
#import <AppKit/NSGraphicsContext.h>
#import <AppKit/NSAffineTransform.h>
#import <AppKit/NSColor.h>
#import <AppKit/NSTypeSetter.h>

IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject)
wxDC *wxDC::sm_focusedDC = NULL;
WX_NSTextStorage wxDC::sm_cocoaNSTextStorage = nil;
WX_NSLayoutManager wxDC::sm_cocoaNSLayoutManager = nil;
WX_NSTextContainer wxDC::sm_cocoaNSTextContainer = nil;

void wxDC::CocoaInitializeTextSystem()
{
    wxASSERT_MSG(!sm_cocoaNSTextStorage && !sm_cocoaNSLayoutManager && !sm_cocoaNSTextContainer,"Text system already initalized!  BAD PROGRAMMER!");

    sm_cocoaNSTextStorage = [[NSTextStorage alloc] init];

    sm_cocoaNSLayoutManager = [[NSLayoutManager alloc] init];
    [sm_cocoaNSTextStorage addLayoutManager:sm_cocoaNSLayoutManager];
    // NSTextStorage retains NSLayoutManager, but so do we
    // [sm_cocoaNSLayoutManager release]; [sm_cocoaNSLayoutManager retain];

    // NOTE:  initWithContainerSize is the designated initializer, but the
    // Apple CircleView sample gets away with just calling init, which
    // is all we really need for our purposes.
    sm_cocoaNSTextContainer = [[NSTextContainer alloc] init];
    [sm_cocoaNSLayoutManager addTextContainer:sm_cocoaNSTextContainer];
    // NSLayoutManager retains NSTextContainer, but so do we
    // [sm_cocoaNSTextContainer release]; [sm_cocoaNSTextContainer retain];
}

void wxDC::CocoaShutdownTextSystem()
{
    [sm_cocoaNSTextContainer release]; sm_cocoaNSTextContainer = nil;
    [sm_cocoaNSLayoutManager release]; sm_cocoaNSLayoutManager = nil;
    [sm_cocoaNSTextStorage release]; sm_cocoaNSTextStorage = nil;
}

wxDC::wxDC(void)
{
}

wxDC::~wxDC(void)
{
}

void wxDC::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
{
    NSBezierPath *bezpath = [NSBezierPath bezierPathWithRect:NSMakeRect(x,y,width,height)];
    [m_textForegroundColour.GetNSColor() set];
    [bezpath stroke];
    [m_brush.GetNSColor() set];
    [bezpath fill];
}

void wxDC::DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
{
    NSBezierPath *bezpath = [NSBezierPath bezierPath];
    [bezpath moveToPoint:NSMakePoint(x1,y1)];
    [bezpath lineToPoint:NSMakePoint(x2,y2)];

    [m_textForegroundColour.GetNSColor() set];
    [bezpath stroke];
}

void wxDC::DoGetTextExtent(const wxString& text, wxCoord *x, wxCoord *y, wxCoord *descent, wxCoord *externalLeading, wxFont *theFont) const
{
// FIXME: Cache this so it can be used for DoDrawText
    wxASSERT_MSG(sm_cocoaNSTextStorage && sm_cocoaNSLayoutManager && sm_cocoaNSTextContainer, "Text system has not been initialized.  BAD PROGRAMMER!");
    NSAttributedString *attributedString = [[NSAttributedString alloc]
            initWithString:[NSString stringWithCString:text.c_str()]];
    [sm_cocoaNSTextStorage setAttributedString:attributedString];
    [attributedString release];

    NSRange glyphRange = [sm_cocoaNSLayoutManager glyphRangeForTextContainer:sm_cocoaNSTextContainer];
    NSRect usedRect = [sm_cocoaNSLayoutManager usedRectForTextContainer:sm_cocoaNSTextContainer];
    if(x)
        *x=(int)usedRect.size.width;
    if(y)
        *y=(int)usedRect.size.height;
    if(descent)
        *descent=0;
    if(externalLeading)
        *externalLeading=0;
}

void wxDC::DoDrawText(const wxString& text, wxCoord x, wxCoord y)
{
    wxASSERT_MSG(sm_cocoaNSTextStorage && sm_cocoaNSLayoutManager && sm_cocoaNSTextContainer, "Text system has not been initialized.  BAD PROGRAMMER!");
    NSAttributedString *attributedString = [[NSAttributedString alloc]
            initWithString:[NSString stringWithCString:text.c_str()]];
    [sm_cocoaNSTextStorage setAttributedString:attributedString];
    [attributedString release];

    NSRange glyphRange = [sm_cocoaNSLayoutManager glyphRangeForTextContainer:sm_cocoaNSTextContainer];
    NSRect usedRect = [sm_cocoaNSLayoutManager usedRectForTextContainer:sm_cocoaNSTextContainer];
    // NOTE: We'll crash trying to get the location of glyphAtIndex:0 if
    // there is no length or we don't start at zero
    if(!glyphRange.length)
        return;
    wxASSERT_MSG(glyphRange.location==0,"glyphRange must begin at zero");

    NSAffineTransform *transform = [NSAffineTransform transform];
    [transform translateXBy:x yBy:y];

    NSAffineTransform *flipTransform = [NSAffineTransform transform];
    /*  x' = 1x + 0y + 0
        y' = 0x + -1y + window's height
    */
    NSAffineTransformStruct matrix = {
        1,  0
    ,   0, -1
    ,   0, usedRect.size.height
    };
    [flipTransform setTransformStruct: matrix];

    NSGraphicsContext *context = [NSGraphicsContext currentContext];
    [context saveGraphicsState];
    [transform concat];
    [flipTransform concat];
    #if 0
    // Draw+fill a rectangle so we can see where the shit is supposed to be.
    wxLogDebug("(%f,%f) (%fx%f)",usedRect.origin.x,usedRect.origin.y,usedRect.size.width,usedRect.size.height);
    NSBezierPath *bezpath = [NSBezierPath bezierPathWithRect:NSMakeRect(0,0,usedRect.size.width,usedRect.size.height)];
    [[NSColor blackColor] set];
    [bezpath stroke];
    [[NSColor blueColor] set];
    [bezpath fill];
    #endif

    NSPoint layoutLocation = [sm_cocoaNSLayoutManager locationForGlyphAtIndex:0];
    layoutLocation.x = 0.0;
    layoutLocation.y *= -1.0;
    layoutLocation.y += [[sm_cocoaNSLayoutManager typesetter] baselineOffsetInLayoutManager:sm_cocoaNSLayoutManager glyphIndex:0];
    // NOTE: That's NSMakePoint, not NSMakePint (working on that though)
    [m_textForegroundColour.GetNSColor() set];
    [sm_cocoaNSLayoutManager drawGlyphsForGlyphRange:glyphRange  atPoint:layoutLocation];

    [context restoreGraphicsState];
}

// wxDCBase functions
int wxDCBase::DeviceToLogicalX(int x) const
{
    return x;
}

int wxDCBase::DeviceToLogicalY(int y) const
{
    return y;
}

int wxDCBase::LogicalToDeviceX(int x) const
{
    return x;
}

int wxDCBase::LogicalToDeviceY(int y) const
{
    return y;
}

///////////////////////////////////////////////////////////////////////////
// cut here, the rest is stubs
///////////////////////////////////////////////////////////////////////////

//-----------------------------------------------------------------------------
// 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

//-----------------------------------------------------------------------------
// wxDC
//-----------------------------------------------------------------------------

void wxDC::DoDrawIcon( const wxIcon &WXUNUSED(icon), int WXUNUSED(x), int WXUNUSED(y) )
{
};

void wxDC::DoDrawPoint( int x, int y ) 
{ 
};

void wxDC::DoDrawPolygon( int, wxPoint *, int, int, int)
{
};

void wxDC::DoDrawLines( int, wxPoint *, int, int )
{
}

int wxDC::GetDepth() const
{
    return 0;
}

wxSize wxDC::GetPPI() const
{
    return wxSize(0,0);
}

bool wxDC::CanGetTextExtent() const
{
    return false;
}

wxCoord wxDC::GetCharHeight() const
{
    return 0;
}

wxCoord wxDC::GetCharWidth() const
{
    return 0;
}

bool wxDC::CanDrawBitmap() const
{
    return false;
}

bool wxDC::DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const
{
    return false;
}

void wxDC::DoDrawArc(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2, wxCoord xc, wxCoord yc)
{
}
    
void wxDC::SetPen(const wxPen& pen)
{
}

void wxDC::SetBrush(const wxBrush& brush)
{
    m_brush = brush;
}

void wxDC::DoSetClippingRegionAsRegion(const wxRegion& region)
{
}

void wxDC::DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
{
}

void wxDC::DestroyClippingRegion()
{
}

void wxDC::DoDrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius)
{
}

void wxDC::DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y, double angle)
{
}

void wxDC::DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h, double sa, double ea)
{
}

void wxDC::DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
{
}

void wxDC::DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask)
{
}

bool wxDC::DoFloodFill(wxCoord x, wxCoord y, const wxColour& col, int style)
{
    return false;
}

void wxDC::DoCrossHair(wxCoord x, wxCoord y)
{
}


bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height, wxDC *source, wxCoord xsrc, wxCoord ysrc, int rop, bool useMask , wxCoord xsrcMask, wxCoord ysrcMask)
{
    return false;
}

void wxDC::DoGetSize( int* width, int* height ) const
{
  *width = m_maxX-m_minX;
  *height = m_maxY-m_minY;
};

void wxDC::DoGetSizeMM( int* width, int* height ) const
{
  int w = 0;
  int h = 0;
  GetSize( &w, &h );
};

void wxDC::SetTextForeground( const wxColour &col )
{
  if (!Ok()) return;
  m_textForegroundColour = col;
};

void wxDC::SetTextBackground( const wxColour &col )
{
  if (!Ok()) return;
  m_textBackgroundColour = col;
};

void wxDC::Clear()
{
}

void wxDC::SetBackground(const wxBrush& brush)
{
    m_backgroundBrush = brush;
}

void wxDC::SetPalette(const wxPalette&)
{
}

void wxDC::SetLogicalFunction(int)
{
}


void wxDC::SetMapMode( int mode )
{
  switch (mode) 
  {
    case wxMM_TWIPS:
      break;
    case wxMM_POINTS:
      break;
    case wxMM_METRIC:
      break;
    case wxMM_LOMETRIC:
      break;
    default:
    case wxMM_TEXT:
      SetLogicalScale( 1.0, 1.0 );
      break;
  };
  if (mode != wxMM_TEXT)
  {
  };
};

void wxDC::SetUserScale( double x, double y )
{
  // allow negative ? -> no
  m_userScaleX = x;
  m_userScaleY = y;
  ComputeScaleAndOrigin();
};

void wxDC::SetLogicalScale( double x, double y )
{
  // allow negative ?
  m_logicalScaleX = x;
  m_logicalScaleY = y;
  ComputeScaleAndOrigin();
};

void wxDC::SetLogicalOrigin( wxCoord x, wxCoord y )
{
  m_logicalOriginX = x * m_signX;   // is this still correct ?
  m_logicalOriginY = y * m_signY;
  ComputeScaleAndOrigin();
};

void wxDC::SetDeviceOrigin( wxCoord x, wxCoord y )
{
  ComputeScaleAndOrigin();
};

void wxDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
{
  m_signX = (xLeftRight ?  1 : -1);
  m_signY = (yBottomUp  ? -1 :  1);
  ComputeScaleAndOrigin();
};

void wxDC::ComputeScaleAndOrigin(void)
{
  // CMB: copy scale to see if it changes
  double origScaleX = m_scaleX;
  double origScaleY = m_scaleY;

  m_scaleX = m_logicalScaleX * m_userScaleX;
  m_scaleY = m_logicalScaleY * m_userScaleY;

  // CMB: if scale has changed call SetPen to recalulate the line width 
  if (m_scaleX != origScaleX || m_scaleY != origScaleY)
  {
    // this is a bit artificial, but we need to force wxDC to think
    // the pen has changed
    wxPen* pen = & GetPen();
    wxPen tempPen;
    m_pen = tempPen;
    SetPen(* pen);
  }
};
Commit	Line	Data
a24aff65	1	/////////////////////////////////////////////////////////////////////////////
891d0563 DE	2	// Name: src/cocoa/dc.mm
	3	// Purpose: wxDC
	4	// Author: David Elliott
a24aff65	5	// Modified by:
891d0563	6	// Created: 2003/04/01
a24aff65	7	// RCS-ID: $Id$
891d0563 DE	8	// Copyright: (c) 2003 David Elliott
891d0563 DE	9	// Licence: wxWindows license
a24aff65 DE	10	/////////////////////////////////////////////////////////////////////////////
a24aff65 DE	11
a24aff65	12	#include "wx/dc.h"
a24aff65 DE	13	#include "wx/log.h"
a24aff65 DE	14
891d0563 DE	15	#import <AppKit/NSBezierPath.h>
	16	#import <AppKit/NSTextStorage.h>
	17	#import <AppKit/NSLayoutManager.h>
	18	#import <AppKit/NSTextContainer.h>
	19	#import <AppKit/NSGraphicsContext.h>
	20	#import <AppKit/NSAffineTransform.h>
	21	#import <AppKit/NSColor.h>
	22	#import <AppKit/NSTypeSetter.h>
	23
a24aff65	24	IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject)
891d0563 DE	25	wxDC *wxDC::sm_focusedDC = NULL;
	26	WX_NSTextStorage wxDC::sm_cocoaNSTextStorage = nil;
	27	WX_NSLayoutManager wxDC::sm_cocoaNSLayoutManager = nil;
	28	WX_NSTextContainer wxDC::sm_cocoaNSTextContainer = nil;
	29
	30	void wxDC::CocoaInitializeTextSystem()
	31	{
	32	wxASSERT_MSG(!sm_cocoaNSTextStorage && !sm_cocoaNSLayoutManager && !sm_cocoaNSTextContainer,"Text system already initalized! BAD PROGRAMMER!");
	33
	34	sm_cocoaNSTextStorage = [[NSTextStorage alloc] init];
	35
	36	sm_cocoaNSLayoutManager = [[NSLayoutManager alloc] init];
	37	[sm_cocoaNSTextStorage addLayoutManager:sm_cocoaNSLayoutManager];
	38	// NSTextStorage retains NSLayoutManager, but so do we
	39	// [sm_cocoaNSLayoutManager release]; [sm_cocoaNSLayoutManager retain];
	40
	41	// NOTE: initWithContainerSize is the designated initializer, but the
	42	// Apple CircleView sample gets away with just calling init, which
	43	// is all we really need for our purposes.
	44	sm_cocoaNSTextContainer = [[NSTextContainer alloc] init];
	45	[sm_cocoaNSLayoutManager addTextContainer:sm_cocoaNSTextContainer];
	46	// NSLayoutManager retains NSTextContainer, but so do we
	47	// [sm_cocoaNSTextContainer release]; [sm_cocoaNSTextContainer retain];
	48	}
	49
	50	void wxDC::CocoaShutdownTextSystem()
	51	{
	52	[sm_cocoaNSTextContainer release]; sm_cocoaNSTextContainer = nil;
	53	[sm_cocoaNSLayoutManager release]; sm_cocoaNSLayoutManager = nil;
	54	[sm_cocoaNSTextStorage release]; sm_cocoaNSTextStorage = nil;
	55	}
	56
	57	wxDC::wxDC(void)
	58	{
	59	}
	60
	61	wxDC::~wxDC(void)
	62	{
	63	}
	64
	65	void wxDC::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
	66	{
	67	NSBezierPath *bezpath = [NSBezierPath bezierPathWithRect:NSMakeRect(x,y,width,height)];
c3b0c2c3	68	[m_textForegroundColour.GetNSColor() set];
891d0563	69	[bezpath stroke];
c3b0c2c3 DE	70	[m_brush.GetNSColor() set];
c3b0c2c3 DE	71	[bezpath fill];
891d0563 DE	72	}
	73
	74	void wxDC::DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
	75	{
	76	NSBezierPath *bezpath = [NSBezierPath bezierPath];
	77	[bezpath moveToPoint:NSMakePoint(x1,y1)];
	78	[bezpath lineToPoint:NSMakePoint(x2,y2)];
c3b0c2c3 DE	79
c3b0c2c3 DE	80	[m_textForegroundColour.GetNSColor() set];
891d0563 DE	81	[bezpath stroke];
	82	}
	83
	84	void wxDC::DoGetTextExtent(const wxString& text, wxCoord x, wxCoord y, wxCoord descent, wxCoord externalLeading, wxFont *theFont) const
	85	{
	86	// FIXME: Cache this so it can be used for DoDrawText
	87	wxASSERT_MSG(sm_cocoaNSTextStorage && sm_cocoaNSLayoutManager && sm_cocoaNSTextContainer, "Text system has not been initialized. BAD PROGRAMMER!");
	88	NSAttributedString *attributedString = [[NSAttributedString alloc]
	89	initWithString:[NSString stringWithCString:text.c_str()]];
	90	[sm_cocoaNSTextStorage setAttributedString:attributedString];
	91	[attributedString release];
	92
	93	NSRange glyphRange = [sm_cocoaNSLayoutManager glyphRangeForTextContainer:sm_cocoaNSTextContainer];
	94	NSRect usedRect = [sm_cocoaNSLayoutManager usedRectForTextContainer:sm_cocoaNSTextContainer];
	95	if(x)
dc483f61	96	*x=(int)usedRect.size.width;
891d0563	97	if(y)
dc483f61	98	*y=(int)usedRect.size.height;
891d0563 DE	99	if(descent)
	100	*descent=0;
	101	if(externalLeading)
	102	*externalLeading=0;
	103	}
	104
	105	void wxDC::DoDrawText(const wxString& text, wxCoord x, wxCoord y)
	106	{
	107	wxASSERT_MSG(sm_cocoaNSTextStorage && sm_cocoaNSLayoutManager && sm_cocoaNSTextContainer, "Text system has not been initialized. BAD PROGRAMMER!");
	108	NSAttributedString *attributedString = [[NSAttributedString alloc]
	109	initWithString:[NSString stringWithCString:text.c_str()]];
	110	[sm_cocoaNSTextStorage setAttributedString:attributedString];
	111	[attributedString release];
	112
	113	NSRange glyphRange = [sm_cocoaNSLayoutManager glyphRangeForTextContainer:sm_cocoaNSTextContainer];
	114	NSRect usedRect = [sm_cocoaNSLayoutManager usedRectForTextContainer:sm_cocoaNSTextContainer];
13fc3db4 DE	115	// NOTE: We'll crash trying to get the location of glyphAtIndex:0 if
	116	// there is no length or we don't start at zero
	117	if(!glyphRange.length)
	118	return;
	119	wxASSERT_MSG(glyphRange.location==0,"glyphRange must begin at zero");
891d0563 DE	120
	121	NSAffineTransform *transform = [NSAffineTransform transform];
	122	[transform translateXBy:x yBy:y];
	123
	124	NSAffineTransform *flipTransform = [NSAffineTransform transform];
	125	/* x' = 1x + 0y + 0
	126	y' = 0x + -1y + window's height
	127	*/
	128	NSAffineTransformStruct matrix = {
	129	1, 0
	130	, 0, -1
	131	, 0, usedRect.size.height
	132	};
	133	[flipTransform setTransformStruct: matrix];
	134
	135	NSGraphicsContext *context = [NSGraphicsContext currentContext];
	136	[context saveGraphicsState];
	137	[transform concat];
	138	[flipTransform concat];
c3b0c2c3	139	#if 0
891d0563 DE	140	// Draw+fill a rectangle so we can see where the shit is supposed to be.
	141	wxLogDebug("(%f,%f) (%fx%f)",usedRect.origin.x,usedRect.origin.y,usedRect.size.width,usedRect.size.height);
	142	NSBezierPath *bezpath = [NSBezierPath bezierPathWithRect:NSMakeRect(0,0,usedRect.size.width,usedRect.size.height)];
	143	[[NSColor blackColor] set];
	144	[bezpath stroke];
	145	[[NSColor blueColor] set];
	146	[bezpath fill];
c3b0c2c3	147	#endif
891d0563 DE	148
	149	NSPoint layoutLocation = [sm_cocoaNSLayoutManager locationForGlyphAtIndex:0];
	150	layoutLocation.x = 0.0;
	151	layoutLocation.y *= -1.0;
	152	layoutLocation.y += [[sm_cocoaNSLayoutManager typesetter] baselineOffsetInLayoutManager:sm_cocoaNSLayoutManager glyphIndex:0];
	153	// NOTE: That's NSMakePoint, not NSMakePint (working on that though)
c3b0c2c3	154	[m_textForegroundColour.GetNSColor() set];
891d0563 DE	155	[sm_cocoaNSLayoutManager drawGlyphsForGlyphRange:glyphRange atPoint:layoutLocation];
	156
	157	[context restoreGraphicsState];
	158	}
	159
2894667f DE	160	// wxDCBase functions
	161	int wxDCBase::DeviceToLogicalX(int x) const
	162	{
	163	return x;
	164	}
	165
	166	int wxDCBase::DeviceToLogicalY(int y) const
	167	{
	168	return y;
	169	}
	170
	171	int wxDCBase::LogicalToDeviceX(int x) const
	172	{
	173	return x;
	174	}
	175
	176	int wxDCBase::LogicalToDeviceY(int y) const
	177	{
	178	return y;
	179	}
	180
891d0563 DE	181	///////////////////////////////////////////////////////////////////////////
	182	// cut here, the rest is stubs
	183	///////////////////////////////////////////////////////////////////////////
a24aff65 DE	184
	185	//-----------------------------------------------------------------------------
	186	// constants
	187	//-----------------------------------------------------------------------------
	188
	189	#define mm2inches 0.0393700787402
	190	#define inches2mm 25.4
	191	#define mm2twips 56.6929133859
	192	#define twips2mm 0.0176388888889
	193	#define mm2pt 2.83464566929
	194	#define pt2mm 0.352777777778
	195
	196	//-----------------------------------------------------------------------------
	197	// wxDC
	198	//-----------------------------------------------------------------------------
	199
a24aff65 DE	200	void wxDC::DoDrawIcon( const wxIcon &WXUNUSED(icon), int WXUNUSED(x), int WXUNUSED(y) )
	201	{
	202	};
	203
	204	void wxDC::DoDrawPoint( int x, int y )
	205	{
	206	};
	207
	208	void wxDC::DoDrawPolygon( int, wxPoint *, int, int, int)
	209	{
	210	};
	211
	212	void wxDC::DoDrawLines( int, wxPoint *, int, int )
	213	{
	214	}
	215
a24aff65 DE	216	int wxDC::GetDepth() const
	217	{
	218	return 0;
	219	}
	220
	221	wxSize wxDC::GetPPI() const
	222	{
	223	return wxSize(0,0);
	224	}
	225
	226	bool wxDC::CanGetTextExtent() const
	227	{
	228	return false;
	229	}
	230
a24aff65 DE	231	wxCoord wxDC::GetCharHeight() const
	232	{
	233	return 0;
	234	}
	235
	236	wxCoord wxDC::GetCharWidth() const
	237	{
	238	return 0;
	239	}
	240
	241	bool wxDC::CanDrawBitmap() const
	242	{
	243	return false;
	244	}
	245
	246	bool wxDC::DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const
	247	{
	248	return false;
	249	}
	250
	251	void wxDC::DoDrawArc(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2, wxCoord xc, wxCoord yc)
	252	{
	253	}
	254
	255	void wxDC::SetPen(const wxPen& pen)
	256	{
	257	}
	258
	259	void wxDC::SetBrush(const wxBrush& brush)
	260	{
c3b0c2c3	261	m_brush = brush;
a24aff65 DE	262	}
	263
	264	void wxDC::DoSetClippingRegionAsRegion(const wxRegion& region)
	265	{
	266	}
	267
	268	void wxDC::DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
	269	{
	270	}
	271
	272	void wxDC::DestroyClippingRegion()
	273	{
	274	}
	275
	276	void wxDC::DoDrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius)
	277	{
	278	}
	279
	280	void wxDC::DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y, double angle)
	281	{
	282	}
	283
	284	void wxDC::DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h, double sa, double ea)
	285	{
	286	}
	287
a24aff65 DE	288	void wxDC::DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
	289	{
	290	}
	291
	292	void wxDC::DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask)
	293	{
	294	}
	295
	296	bool wxDC::DoFloodFill(wxCoord x, wxCoord y, const wxColour& col, int style)
	297	{
	298	return false;
	299	}
	300
	301	void wxDC::DoCrossHair(wxCoord x, wxCoord y)
	302	{
	303	}
	304
a24aff65 DE	305
	306	bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height, wxDC *source, wxCoord xsrc, wxCoord ysrc, int rop, bool useMask , wxCoord xsrcMask, wxCoord ysrcMask)
	307	{
	308	return false;
	309	}
	310
	311	void wxDC::DoGetSize( int* width, int* height ) const
	312	{
	313	*width = m_maxX-m_minX;
	314	*height = m_maxY-m_minY;
	315	};
	316
	317	void wxDC::DoGetSizeMM( int* width, int* height ) const
	318	{
	319	int w = 0;
	320	int h = 0;
	321	GetSize( &w, &h );
	322	};
	323
	324	void wxDC::SetTextForeground( const wxColour &col )
	325	{
	326	if (!Ok()) return;
	327	m_textForegroundColour = col;
	328	};
	329
	330	void wxDC::SetTextBackground( const wxColour &col )
	331	{
	332	if (!Ok()) return;
	333	m_textBackgroundColour = col;
	334	};
	335
	336	void wxDC::Clear()
	337	{
	338	}
	339
7bc429ef	340	void wxDC::SetBackground(const wxBrush& brush)
a24aff65	341	{
7bc429ef	342	m_backgroundBrush = brush;
a24aff65 DE	343	}
	344
	345	void wxDC::SetPalette(const wxPalette&)
	346	{
	347	}
	348
	349	void wxDC::SetLogicalFunction(int)
	350	{
	351	}
	352
	353
	354	void wxDC::SetMapMode( int mode )
	355	{
	356	switch (mode)
	357	{
	358	case wxMM_TWIPS:
	359	break;
	360	case wxMM_POINTS:
	361	break;
	362	case wxMM_METRIC:
	363	break;
	364	case wxMM_LOMETRIC:
	365	break;
	366	default:
	367	case wxMM_TEXT:
	368	SetLogicalScale( 1.0, 1.0 );
	369	break;
	370	};
	371	if (mode != wxMM_TEXT)
	372	{
	373	};
	374	};
	375
	376	void wxDC::SetUserScale( double x, double y )
	377	{
	378	// allow negative ? -> no
	379	m_userScaleX = x;
	380	m_userScaleY = y;
	381	ComputeScaleAndOrigin();
	382	};
	383
	384	void wxDC::SetLogicalScale( double x, double y )
	385	{
	386	// allow negative ?
	387	m_logicalScaleX = x;
	388	m_logicalScaleY = y;
	389	ComputeScaleAndOrigin();
	390	};
	391
	392	void wxDC::SetLogicalOrigin( wxCoord x, wxCoord y )
	393	{
	394	m_logicalOriginX = x * m_signX; // is this still correct ?
	395	m_logicalOriginY = y * m_signY;
	396	ComputeScaleAndOrigin();
	397	};
	398
	399	void wxDC::SetDeviceOrigin( wxCoord x, wxCoord y )
	400	{
	401	ComputeScaleAndOrigin();
	402	};
	403
	404	void wxDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
	405	{
	406	m_signX = (xLeftRight ? 1 : -1);
407	m_signY = (yBottomUp ? -1 : 1);
408	ComputeScaleAndOrigin();
409	};
410
411	void wxDC::ComputeScaleAndOrigin(void)
412	{
413	// CMB: copy scale to see if it changes
414	double origScaleX = m_scaleX;
415	double origScaleY = m_scaleY;
416
417	m_scaleX = m_logicalScaleX * m_userScaleX;
418	m_scaleY = m_logicalScaleY * m_userScaleY;
419
420	// CMB: if scale has changed call SetPen to recalulate the line width
421	if (m_scaleX != origScaleX \|\| m_scaleY != origScaleY)
422	{
423	// this is a bit artificial, but we need to force wxDC to think
424	// the pen has changed
425	wxPen* pen = & GetPen();
426	wxPen tempPen;
427	m_pen = tempPen;
428	SetPen(* pen);
429	}
430	};
431