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:     wxWidgets licence
/////////////////////////////////////////////////////////////////////////////

#include "wx/wxprec.h"

#include "wx/dc.h"

#ifndef WX_PRECOMP
    #include "wx/log.h"
    #include "wx/math.h" //math constants
#endif //WX_PRECOMP

#include "wx/cocoa/autorelease.h"
#include "wx/cocoa/string.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>
#import <AppKit/NSImage.h>

#include "wx/listimpl.cpp"
WX_DEFINE_LIST(wxCocoaDCStack);

IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject)
WX_NSTextStorage wxDC::sm_cocoaNSTextStorage = nil;
WX_NSLayoutManager wxDC::sm_cocoaNSLayoutManager = nil;
WX_NSTextContainer wxDC::sm_cocoaNSTextContainer = nil;
wxCocoaDCStack wxDC::sm_cocoaDCStack;

inline void CocoaSetPenForNSBezierPath(wxPen &pen, NSBezierPath *bezpath)
{
    [pen.GetNSColor() set];
    const CGFloat *pattern;
    [bezpath setLineDash:pattern count:pen.GetCocoaLineDash(&pattern) phase:0.0];
    [bezpath setLineWidth:pen.GetWidth()];
    switch(pen.GetJoin())
    {
    case wxJOIN_BEVEL:
        [bezpath setLineJoinStyle:NSBevelLineJoinStyle];
        break;
    case wxJOIN_ROUND:
        [bezpath setLineJoinStyle:NSRoundLineJoinStyle];
        break;
    case wxJOIN_MITER:
        [bezpath setLineJoinStyle:NSMiterLineJoinStyle];
        break;
    }
    switch(pen.GetCap())
    {
    case wxCAP_ROUND:
        [bezpath setLineCapStyle:NSRoundLineCapStyle];
        break;
    case wxCAP_PROJECTING:
        [bezpath setLineCapStyle:NSSquareLineCapStyle];
        break;
    case wxCAP_BUTT:
        [bezpath setLineCapStyle:NSButtLineCapStyle];
        break;
    }
}

void wxDC::CocoaInitializeTextSystem()
{
    wxASSERT_MSG(!sm_cocoaNSTextStorage && !sm_cocoaNSLayoutManager && !sm_cocoaNSTextContainer,wxT("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;
}

void wxDC::CocoaUnwindStackAndLoseFocus()
{
    wxCocoaDCStack::compatibility_iterator ourNode=sm_cocoaDCStack.Find(this);
    if(ourNode)
    {
        wxCocoaDCStack::compatibility_iterator node=sm_cocoaDCStack.GetFirst();
        for(;node!=ourNode; node=sm_cocoaDCStack.GetFirst())
        {
            wxDC *dc = node->GetData();
            wxASSERT(dc);
            wxASSERT(dc!=this);
            if(!dc->CocoaUnlockFocus())
            {
                wxFAIL_MSG(wxT("Unable to unlock focus on higher-level DC!"));
            }
            sm_cocoaDCStack.Erase(node);
        }
        wxASSERT(node==ourNode);
        wxASSERT(ourNode->GetData() == this);
        ourNode->GetData()->CocoaUnlockFocus();
        sm_cocoaDCStack.Erase(ourNode);
    }
}

bool wxDC::CocoaUnwindStackAndTakeFocus()
{
    wxCocoaDCStack::compatibility_iterator node=sm_cocoaDCStack.GetFirst();
    for(;node;node = sm_cocoaDCStack.GetFirst())
    {
        wxDC *dc = node->GetData();
        wxASSERT(dc);
        // If we're on the stack, then it's unwound enough and we have focus
        if(dc==this)
            return true;
        // If unable to unlockFocus (e.g. wxPaintDC) stop here
        if(!dc->CocoaUnlockFocus())
            break;
        sm_cocoaDCStack.Erase(node);
    }
    return CocoaLockFocus();
}

wxDC::wxDC(void)
{
    m_cocoaWxToBoundsTransform = nil;
    m_pen = *wxBLACK_PEN;
}

wxDC::~wxDC(void)
{
    [m_cocoaWxToBoundsTransform release];
}

bool wxDC::CocoaLockFocus()
{
    return false;
}

bool wxDC::CocoaUnlockFocus()
{
    return false;
}

/*static*/ WX_NSAffineTransform wxDC::CocoaGetWxToBoundsTransform(bool isFlipped, float height)
{
    NSAffineTransform *transform = nil;
    // This transform flips the graphics since wxDC uses top-left origin
    if(!isFlipped)
    {
        // The transform is auto released
        transform = [NSAffineTransform transform];
        /*  x' = 1x + 0y + 0
            y' = 0x + -1y + window's height
        */
        NSAffineTransformStruct matrix = {
            1,  0
        ,   0, -1
        ,   0, height
        };
        [transform setTransformStruct: matrix];
    }
    return transform;
}

void wxDC::CocoaApplyTransformations()
{
    [m_cocoaWxToBoundsTransform concat];
    // TODO: Apply device/logical/user position/scaling transformations
}

void wxDC::CocoaUnapplyTransformations()
{
    // NOTE: You *must* call this with focus held.
    // Undo all transforms so we're back in true Cocoa coords with
    // no scaling or flipping.
    NSAffineTransform *invertTransform;
    invertTransform = [m_cocoaWxToBoundsTransform copy];
    [invertTransform invert];
    [invertTransform concat];
    [invertTransform release];
}

bool wxDC::CocoaGetBounds(void *rectData)
{
    // We don't know what we are so we can't return anything.
    return false;
}

void wxDC::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
{
    wxAutoNSAutoreleasePool pool;
    if(!CocoaTakeFocus()) return;
    NSBezierPath *bezpath = [NSBezierPath bezierPathWithRect:NSMakeRect(x,y,width,height)];
    CocoaSetPenForNSBezierPath(m_pen,bezpath);
    [bezpath stroke];
    [m_brush.GetNSColor() set];
    [bezpath fill];
}

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

    CocoaSetPenForNSBezierPath(m_pen,bezpath);
    [bezpath stroke];
}

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

    // Set the color (and later font) attributes
    NSColor *fgColor = m_textForegroundColour.GetNSColor();
    NSColor *bgColor = m_textBackgroundColour.GetNSColor();
    if(!fgColor)
        fgColor = [NSColor clearColor];
    if(!bgColor)
        bgColor = [NSColor clearColor];
    NSDictionary *attrDict = [[NSDictionary alloc] initWithObjectsAndKeys:
            fgColor, NSForegroundColorAttributeName,
            bgColor, NSBackgroundColorAttributeName,
            nil];
    [sm_cocoaNSTextStorage addAttributes: attrDict range:NSMakeRange(0,[sm_cocoaNSTextStorage length])];
    [attrDict 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,wxT("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.
    wxLogTrace(wxTRACE_COCOA,wxT("(%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;

    // Save the location as is for underlining
    NSPoint underlineLocation = layoutLocation;

    // Offset the location by the baseline for drawing the glyphs.
    layoutLocation.y += [[sm_cocoaNSLayoutManager typesetter] baselineOffsetInLayoutManager:sm_cocoaNSLayoutManager glyphIndex:0];

    if(m_backgroundMode==wxSOLID)
        [sm_cocoaNSLayoutManager drawBackgroundForGlyphRange:glyphRange  atPoint:NSZeroPoint];
    [sm_cocoaNSLayoutManager drawGlyphsForGlyphRange:glyphRange  atPoint:layoutLocation];

    int underlineStyle = GetFont().GetUnderlined() ? NSUnderlineStyleSingle : NSUnderlineStyleNone;
    NSRange lineGlyphRange;
    NSRect lineRect = [sm_cocoaNSLayoutManager lineFragmentRectForGlyphAtIndex:0 effectiveRange:&lineGlyphRange];

    [sm_cocoaNSLayoutManager underlineGlyphRange:glyphRange underlineType:underlineStyle
        lineFragmentRect:lineRect lineFragmentGlyphRange:lineGlyphRange
        containerOrigin:underlineLocation];

    [context restoreGraphicsState];
}

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

//-----------------------------------------------------------------------------
// 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 true;
}

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::SetFont(const wxFont& font)
{
    m_font = font;
}

void wxDC::SetPen(const wxPen& pen)
{
    m_pen = 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)
{
    wxAutoNSAutoreleasePool pool;
    if(!CocoaTakeFocus()) return;
    if(!bmp.Ok())
        return;

#if 0
    // Draw a rect so we can see where it's supposed to be
    wxLogTrace(wxTRACE_COCOA,wxT("image at (%d,%d) size %dx%d"),x,y,bmp.GetWidth(),bmp.GetHeight());
    NSBezierPath *bezpath = [NSBezierPath bezierPathWithRect:NSMakeRect(x,y,bmp.GetWidth(),bmp.GetHeight())];
    [[NSColor blackColor] set];
    [bezpath stroke];
    [[NSColor blueColor] set];
    [bezpath fill];
#endif // 0

    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, bmp.GetHeight()
    };
    [flipTransform setTransformStruct: matrix];

    NSGraphicsContext *context = [NSGraphicsContext currentContext];
    [context saveGraphicsState];
    [transform concat];
    [flipTransform concat];

    NSImage *nsimage = [bmp.GetNSImage(useMask) retain];

    [nsimage drawAtPoint: NSMakePoint(0,0)
        fromRect: NSMakeRect(0.0,0.0,bmp.GetWidth(),bmp.GetHeight())
        operation: NSCompositeSourceOver
        fraction: 1.0];

    [nsimage release];
    [context restoreGraphicsState];
}

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)
{
    if(!CocoaTakeFocus()) return false;
    if(!source) return false;
    return source->CocoaDoBlitOnFocusedDC(xdest,ydest,width,height,
        xsrc, ysrc, rop, useMask, xsrcMask, ysrcMask);
}

bool wxDC::CocoaDoBlitOnFocusedDC(wxCoord xdest, wxCoord ydest,
    wxCoord width, wxCoord height, wxCoord xsrc, wxCoord ysrc,
    int logicalFunc, 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()
{
    if(!CocoaTakeFocus()) return;

    NSRect boundsRect;
    if(!CocoaGetBounds(&boundsRect)) return;

    NSGraphicsContext *context = [NSGraphicsContext currentContext];
    [context saveGraphicsState];

    // Undo all transforms so when we draw our bounds rect we
    // really overwrite our bounds rect.
    CocoaUnapplyTransformations();

    [m_backgroundBrush.GetNSColor() set];
    [NSBezierPath fillRect:boundsRect];

    [context restoreGraphicsState];
}

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
    const wxPen* pen = & GetPen();
    wxPen tempPen;
    m_pen = tempPen;
    SetPen(* pen);
  }
};
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: src/cocoa/dc.mm
	3	// Purpose: wxDC
	4	// Author: David Elliott
	5	// Modified by:
	6	// Created: 2003/04/01
	7	// RCS-ID: $Id$
	8	// Copyright: (c) 2003 David Elliott
	9	// Licence: wxWidgets licence
	10	/////////////////////////////////////////////////////////////////////////////
	11
	12	#include "wx/wxprec.h"
	13
	14	#include "wx/dc.h"
	15
	16	#ifndef WX_PRECOMP
	17	#include "wx/log.h"
	18	#include "wx/math.h" //math constants
	19	#endif //WX_PRECOMP
	20
	21	#include "wx/cocoa/autorelease.h"
	22	#include "wx/cocoa/string.h"
	23
	24	#import <AppKit/NSBezierPath.h>
	25	#import <AppKit/NSTextStorage.h>
	26	#import <AppKit/NSLayoutManager.h>
	27	#import <AppKit/NSTextContainer.h>
	28	#import <AppKit/NSGraphicsContext.h>
	29	#import <AppKit/NSAffineTransform.h>
	30	#import <AppKit/NSColor.h>
	31	#import <AppKit/NSTypesetter.h>
	32	#import <AppKit/NSImage.h>
	33
	34	#include "wx/listimpl.cpp"
	35	WX_DEFINE_LIST(wxCocoaDCStack);
	36
	37	IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject)
	38	WX_NSTextStorage wxDC::sm_cocoaNSTextStorage = nil;
	39	WX_NSLayoutManager wxDC::sm_cocoaNSLayoutManager = nil;
	40	WX_NSTextContainer wxDC::sm_cocoaNSTextContainer = nil;
	41	wxCocoaDCStack wxDC::sm_cocoaDCStack;
	42
	43	inline void CocoaSetPenForNSBezierPath(wxPen &pen, NSBezierPath *bezpath)
	44	{
	45	[pen.GetNSColor() set];
	46	const CGFloat *pattern;
	47	[bezpath setLineDash:pattern count:pen.GetCocoaLineDash(&pattern) phase:0.0];
	48	[bezpath setLineWidth:pen.GetWidth()];
	49	switch(pen.GetJoin())
	50	{
	51	case wxJOIN_BEVEL:
	52	[bezpath setLineJoinStyle:NSBevelLineJoinStyle];
	53	break;
	54	case wxJOIN_ROUND:
	55	[bezpath setLineJoinStyle:NSRoundLineJoinStyle];
	56	break;
	57	case wxJOIN_MITER:
	58	[bezpath setLineJoinStyle:NSMiterLineJoinStyle];
	59	break;
	60	}
	61	switch(pen.GetCap())
	62	{
	63	case wxCAP_ROUND:
	64	[bezpath setLineCapStyle:NSRoundLineCapStyle];
	65	break;
	66	case wxCAP_PROJECTING:
	67	[bezpath setLineCapStyle:NSSquareLineCapStyle];
	68	break;
	69	case wxCAP_BUTT:
	70	[bezpath setLineCapStyle:NSButtLineCapStyle];
	71	break;
	72	}
	73	}
	74
	75	void wxDC::CocoaInitializeTextSystem()
	76	{
	77	wxASSERT_MSG(!sm_cocoaNSTextStorage && !sm_cocoaNSLayoutManager && !sm_cocoaNSTextContainer,wxT("Text system already initalized! BAD PROGRAMMER!"));
	78
	79	sm_cocoaNSTextStorage = [[NSTextStorage alloc] init];
	80
	81	sm_cocoaNSLayoutManager = [[NSLayoutManager alloc] init];
	82	[sm_cocoaNSTextStorage addLayoutManager:sm_cocoaNSLayoutManager];
	83	// NSTextStorage retains NSLayoutManager, but so do we
	84	// [sm_cocoaNSLayoutManager release]; [sm_cocoaNSLayoutManager retain];
	85
	86	// NOTE: initWithContainerSize is the designated initializer, but the
	87	// Apple CircleView sample gets away with just calling init, which
	88	// is all we really need for our purposes.
	89	sm_cocoaNSTextContainer = [[NSTextContainer alloc] init];
	90	[sm_cocoaNSLayoutManager addTextContainer:sm_cocoaNSTextContainer];
	91	// NSLayoutManager retains NSTextContainer, but so do we
	92	// [sm_cocoaNSTextContainer release]; [sm_cocoaNSTextContainer retain];
	93	}
	94
	95	void wxDC::CocoaShutdownTextSystem()
	96	{
	97	[sm_cocoaNSTextContainer release]; sm_cocoaNSTextContainer = nil;
	98	[sm_cocoaNSLayoutManager release]; sm_cocoaNSLayoutManager = nil;
	99	[sm_cocoaNSTextStorage release]; sm_cocoaNSTextStorage = nil;
	100	}
	101
	102	void wxDC::CocoaUnwindStackAndLoseFocus()
	103	{
	104	wxCocoaDCStack::compatibility_iterator ourNode=sm_cocoaDCStack.Find(this);
	105	if(ourNode)
	106	{
	107	wxCocoaDCStack::compatibility_iterator node=sm_cocoaDCStack.GetFirst();
	108	for(;node!=ourNode; node=sm_cocoaDCStack.GetFirst())
	109	{
	110	wxDC *dc = node->GetData();
	111	wxASSERT(dc);
	112	wxASSERT(dc!=this);
	113	if(!dc->CocoaUnlockFocus())
	114	{
	115	wxFAIL_MSG(wxT("Unable to unlock focus on higher-level DC!"));
	116	}
	117	sm_cocoaDCStack.Erase(node);
	118	}
	119	wxASSERT(node==ourNode);
	120	wxASSERT(ourNode->GetData() == this);
	121	ourNode->GetData()->CocoaUnlockFocus();
	122	sm_cocoaDCStack.Erase(ourNode);
	123	}
	124	}
	125
	126	bool wxDC::CocoaUnwindStackAndTakeFocus()
	127	{
	128	wxCocoaDCStack::compatibility_iterator node=sm_cocoaDCStack.GetFirst();
	129	for(;node;node = sm_cocoaDCStack.GetFirst())
	130	{
	131	wxDC *dc = node->GetData();
	132	wxASSERT(dc);
	133	// If we're on the stack, then it's unwound enough and we have focus
	134	if(dc==this)
	135	return true;
	136	// If unable to unlockFocus (e.g. wxPaintDC) stop here
	137	if(!dc->CocoaUnlockFocus())
	138	break;
	139	sm_cocoaDCStack.Erase(node);
	140	}
	141	return CocoaLockFocus();
	142	}
	143
	144	wxDC::wxDC(void)
	145	{
	146	m_cocoaWxToBoundsTransform = nil;
	147	m_pen = *wxBLACK_PEN;
	148	}
	149
	150	wxDC::~wxDC(void)
	151	{
	152	[m_cocoaWxToBoundsTransform release];
	153	}
	154
	155	bool wxDC::CocoaLockFocus()
	156	{
	157	return false;
	158	}
	159
	160	bool wxDC::CocoaUnlockFocus()
	161	{
	162	return false;
	163	}
	164
	165	/static/ WX_NSAffineTransform wxDC::CocoaGetWxToBoundsTransform(bool isFlipped, float height)
	166	{
	167	NSAffineTransform *transform = nil;
	168	// This transform flips the graphics since wxDC uses top-left origin
	169	if(!isFlipped)
	170	{
	171	// The transform is auto released
	172	transform = [NSAffineTransform transform];
	173	/* x' = 1x + 0y + 0
	174	y' = 0x + -1y + window's height
	175	*/
	176	NSAffineTransformStruct matrix = {
	177	1, 0
	178	, 0, -1
	179	, 0, height
	180	};
	181	[transform setTransformStruct: matrix];
	182	}
	183	return transform;
	184	}
	185
	186	void wxDC::CocoaApplyTransformations()
	187	{
	188	[m_cocoaWxToBoundsTransform concat];
	189	// TODO: Apply device/logical/user position/scaling transformations
	190	}
	191
	192	void wxDC::CocoaUnapplyTransformations()
	193	{
	194	// NOTE: You must call this with focus held.
	195	// Undo all transforms so we're back in true Cocoa coords with
	196	// no scaling or flipping.
	197	NSAffineTransform *invertTransform;
	198	invertTransform = [m_cocoaWxToBoundsTransform copy];
	199	[invertTransform invert];
	200	[invertTransform concat];
	201	[invertTransform release];
	202	}
	203
	204	bool wxDC::CocoaGetBounds(void *rectData)
	205	{
	206	// We don't know what we are so we can't return anything.
	207	return false;
	208	}
	209
	210	void wxDC::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
	211	{
	212	wxAutoNSAutoreleasePool pool;
	213	if(!CocoaTakeFocus()) return;
	214	NSBezierPath *bezpath = [NSBezierPath bezierPathWithRect:NSMakeRect(x,y,width,height)];
	215	CocoaSetPenForNSBezierPath(m_pen,bezpath);
	216	[bezpath stroke];
	217	[m_brush.GetNSColor() set];
	218	[bezpath fill];
	219	}
	220
	221	void wxDC::DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
	222	{
	223	wxAutoNSAutoreleasePool pool;
	224	if(!CocoaTakeFocus()) return;
	225	NSBezierPath *bezpath = [NSBezierPath bezierPath];
	226	[bezpath moveToPoint:NSMakePoint(x1,y1)];
	227	[bezpath lineToPoint:NSMakePoint(x2,y2)];
	228
	229	CocoaSetPenForNSBezierPath(m_pen,bezpath);
	230	[bezpath stroke];
	231	}
	232
	233	void wxDC::DoGetTextExtent(const wxString& text, wxCoord x, wxCoord y, wxCoord descent, wxCoord externalLeading, const wxFont *theFont) const
	234	{
	235	wxAutoNSAutoreleasePool pool;
	236	// FIXME: Cache this so it can be used for DoDrawText
	237	wxASSERT_MSG(sm_cocoaNSTextStorage && sm_cocoaNSLayoutManager && sm_cocoaNSTextContainer, wxT("Text system has not been initialized. BAD PROGRAMMER!"));
	238	NSAttributedString *attributedString = [[NSAttributedString alloc]
	239	initWithString:wxNSStringWithWxString(text.c_str())];
	240	[sm_cocoaNSTextStorage setAttributedString:attributedString];
	241	[attributedString release];
	242
	243	NSRange glyphRange = [sm_cocoaNSLayoutManager glyphRangeForTextContainer:sm_cocoaNSTextContainer];
	244	NSRect usedRect = [sm_cocoaNSLayoutManager usedRectForTextContainer:sm_cocoaNSTextContainer];
	245	if(x)
	246	*x=(int)usedRect.size.width;
	247	if(y)
	248	*y=(int)usedRect.size.height;
	249	if(descent)
	250	*descent=0;
	251	if(externalLeading)
	252	*externalLeading=0;
	253	}
	254
	255	void wxDC::DoDrawText(const wxString& text, wxCoord x, wxCoord y)
	256	{
	257	wxAutoNSAutoreleasePool pool;
	258	if(!CocoaTakeFocus()) return;
	259	wxASSERT_MSG(sm_cocoaNSTextStorage && sm_cocoaNSLayoutManager && sm_cocoaNSTextContainer, wxT("Text system has not been initialized. BAD PROGRAMMER!"));
	260	NSAttributedString *attributedString = [[NSAttributedString alloc]
	261	initWithString:wxNSStringWithWxString(text.c_str())];
	262	[sm_cocoaNSTextStorage setAttributedString:attributedString];
	263	[attributedString release];
	264
	265	// Set the color (and later font) attributes
	266	NSColor *fgColor = m_textForegroundColour.GetNSColor();
	267	NSColor *bgColor = m_textBackgroundColour.GetNSColor();
	268	if(!fgColor)
	269	fgColor = [NSColor clearColor];
	270	if(!bgColor)
	271	bgColor = [NSColor clearColor];
	272	NSDictionary *attrDict = [[NSDictionary alloc] initWithObjectsAndKeys:
	273	fgColor, NSForegroundColorAttributeName,
	274	bgColor, NSBackgroundColorAttributeName,
	275	nil];
	276	[sm_cocoaNSTextStorage addAttributes: attrDict range:NSMakeRange(0,[sm_cocoaNSTextStorage length])];
	277	[attrDict release];
	278
	279	NSRange glyphRange = [sm_cocoaNSLayoutManager glyphRangeForTextContainer:sm_cocoaNSTextContainer];
	280	NSRect usedRect = [sm_cocoaNSLayoutManager usedRectForTextContainer:sm_cocoaNSTextContainer];
	281	// NOTE: We'll crash trying to get the location of glyphAtIndex:0 if
	282	// there is no length or we don't start at zero
	283	if(!glyphRange.length)
	284	return;
	285	wxASSERT_MSG(glyphRange.location==0,wxT("glyphRange must begin at zero"));
	286
	287	NSAffineTransform *transform = [NSAffineTransform transform];
	288	[transform translateXBy:x yBy:y];
	289
	290	NSAffineTransform *flipTransform = [NSAffineTransform transform];
	291	/* x' = 1x + 0y + 0
	292	y' = 0x + -1y + window's height
	293	*/
	294	NSAffineTransformStruct matrix = {
	295	1, 0
	296	, 0, -1
	297	, 0, usedRect.size.height
	298	};
	299	[flipTransform setTransformStruct: matrix];
	300
	301	NSGraphicsContext *context = [NSGraphicsContext currentContext];
	302	[context saveGraphicsState];
	303	[transform concat];
	304	[flipTransform concat];
	305	#if 0
	306	// Draw+fill a rectangle so we can see where the shit is supposed to be.
	307	wxLogTrace(wxTRACE_COCOA,wxT("(%f,%f) (%fx%f)"),usedRect.origin.x,usedRect.origin.y,usedRect.size.width,usedRect.size.height);
	308	NSBezierPath *bezpath = [NSBezierPath bezierPathWithRect:NSMakeRect(0,0,usedRect.size.width,usedRect.size.height)];
	309	[[NSColor blackColor] set];
	310	[bezpath stroke];
	311	[[NSColor blueColor] set];
	312	[bezpath fill];
	313	#endif
	314
	315	NSPoint layoutLocation = [sm_cocoaNSLayoutManager locationForGlyphAtIndex:0];
	316	layoutLocation.x = 0.0;
	317	layoutLocation.y *= -1.0;
	318
	319	// Save the location as is for underlining
	320	NSPoint underlineLocation = layoutLocation;
	321
	322	// Offset the location by the baseline for drawing the glyphs.
	323	layoutLocation.y += [[sm_cocoaNSLayoutManager typesetter] baselineOffsetInLayoutManager:sm_cocoaNSLayoutManager glyphIndex:0];
	324
	325	if(m_backgroundMode==wxSOLID)
	326	[sm_cocoaNSLayoutManager drawBackgroundForGlyphRange:glyphRange atPoint:NSZeroPoint];
	327	[sm_cocoaNSLayoutManager drawGlyphsForGlyphRange:glyphRange atPoint:layoutLocation];
	328
	329	int underlineStyle = GetFont().GetUnderlined() ? NSUnderlineStyleSingle : NSUnderlineStyleNone;
	330	NSRange lineGlyphRange;
	331	NSRect lineRect = [sm_cocoaNSLayoutManager lineFragmentRectForGlyphAtIndex:0 effectiveRange:&lineGlyphRange];
	332
	333	[sm_cocoaNSLayoutManager underlineGlyphRange:glyphRange underlineType:underlineStyle
	334	lineFragmentRect:lineRect lineFragmentGlyphRange:lineGlyphRange
	335	containerOrigin:underlineLocation];
	336
	337	[context restoreGraphicsState];
	338	}
	339
	340	///////////////////////////////////////////////////////////////////////////
	341	// cut here, the rest is stubs
	342	///////////////////////////////////////////////////////////////////////////
	343
	344	//-----------------------------------------------------------------------------
	345	// wxDC
	346	//-----------------------------------------------------------------------------
	347
	348	void wxDC::DoDrawIcon( const wxIcon &WXUNUSED(icon), int WXUNUSED(x), int WXUNUSED(y) )
	349	{
	350	};
	351
	352	void wxDC::DoDrawPoint( int x, int y )
	353	{
	354	};
	355
	356	void wxDC::DoDrawPolygon( int, wxPoint *, int, int, int)
	357	{
	358	};
	359
	360	void wxDC::DoDrawLines( int, wxPoint *, int, int )
	361	{
	362	}
	363
	364	int wxDC::GetDepth() const
	365	{
	366	return 0;
	367	}
	368
	369	wxSize wxDC::GetPPI() const
	370	{
	371	return wxSize(0,0);
	372	}
	373
	374	bool wxDC::CanGetTextExtent() const
	375	{
	376	return false;
	377	}
	378
	379	wxCoord wxDC::GetCharHeight() const
	380	{
	381	return 0;
	382	}
	383
	384	wxCoord wxDC::GetCharWidth() const
	385	{
	386	return 0;
	387	}
	388
	389	bool wxDC::CanDrawBitmap() const
	390	{
	391	return true;
	392	}
	393
	394	bool wxDC::DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const
	395	{
	396	return false;
	397	}
	398
	399	void wxDC::DoDrawArc(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2, wxCoord xc, wxCoord yc)
	400	{
	401	}
	402
	403	void wxDC::SetFont(const wxFont& font)
	404	{
	405	m_font = font;
	406	}
	407
	408	void wxDC::SetPen(const wxPen& pen)
	409	{
	410	m_pen = pen;
	411	}
	412
	413	void wxDC::SetBrush(const wxBrush& brush)
	414	{
	415	m_brush = brush;
	416	}
	417
	418	void wxDC::DoSetClippingRegionAsRegion(const wxRegion& region)
	419	{
	420	}
	421
	422	void wxDC::DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
	423	{
	424	}
	425
	426	void wxDC::DestroyClippingRegion()
	427	{
	428	}
	429
	430	void wxDC::DoDrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius)
	431	{
	432	}
	433
	434	void wxDC::DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y, double angle)
	435	{
	436	}
	437
	438	void wxDC::DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h, double sa, double ea)
	439	{
	440	}
	441
	442	void wxDC::DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
	443	{
	444	}
	445
	446	void wxDC::DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask)
	447	{
	448	wxAutoNSAutoreleasePool pool;
	449	if(!CocoaTakeFocus()) return;
	450	if(!bmp.Ok())
	451	return;
	452
	453	#if 0
	454	// Draw a rect so we can see where it's supposed to be
	455	wxLogTrace(wxTRACE_COCOA,wxT("image at (%d,%d) size %dx%d"),x,y,bmp.GetWidth(),bmp.GetHeight());
	456	NSBezierPath *bezpath = [NSBezierPath bezierPathWithRect:NSMakeRect(x,y,bmp.GetWidth(),bmp.GetHeight())];
	457	[[NSColor blackColor] set];
	458	[bezpath stroke];
	459	[[NSColor blueColor] set];
	460	[bezpath fill];
	461	#endif // 0
	462
	463	NSAffineTransform *transform = [NSAffineTransform transform];
	464	[transform translateXBy:x yBy:y];
	465
	466	NSAffineTransform *flipTransform = [NSAffineTransform transform];
	467	/* x' = 1x + 0y + 0
	468	y' = 0x + -1y + window's height
	469	*/
	470	NSAffineTransformStruct matrix = {
	471	1, 0
	472	, 0, -1
	473	, 0, bmp.GetHeight()
	474	};
	475	[flipTransform setTransformStruct: matrix];
	476
	477	NSGraphicsContext *context = [NSGraphicsContext currentContext];
	478	[context saveGraphicsState];
	479	[transform concat];
	480	[flipTransform concat];
	481
	482	NSImage *nsimage = [bmp.GetNSImage(useMask) retain];
	483
	484	[nsimage drawAtPoint: NSMakePoint(0,0)
	485	fromRect: NSMakeRect(0.0,0.0,bmp.GetWidth(),bmp.GetHeight())
	486	operation: NSCompositeSourceOver
	487	fraction: 1.0];
	488
	489	[nsimage release];
	490	[context restoreGraphicsState];
	491	}
	492
	493	bool wxDC::DoFloodFill(wxCoord x, wxCoord y, const wxColour& col, int style)
	494	{
	495	return false;
	496	}
	497
	498	void wxDC::DoCrossHair(wxCoord x, wxCoord y)
	499	{
	500	}
	501
	502
	503	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)
	504	{
	505	if(!CocoaTakeFocus()) return false;
	506	if(!source) return false;
	507	return source->CocoaDoBlitOnFocusedDC(xdest,ydest,width,height,
	508	xsrc, ysrc, rop, useMask, xsrcMask, ysrcMask);
	509	}
	510
	511	bool wxDC::CocoaDoBlitOnFocusedDC(wxCoord xdest, wxCoord ydest,
	512	wxCoord width, wxCoord height, wxCoord xsrc, wxCoord ysrc,
	513	int logicalFunc, bool useMask, wxCoord xsrcMask, wxCoord ysrcMask)
	514	{
	515	return false;
	516	}
	517
	518	void wxDC::DoGetSize( int* width, int* height ) const
	519	{
	520	*width = m_maxX-m_minX;
	521	*height = m_maxY-m_minY;
	522	};
	523
	524	void wxDC::DoGetSizeMM( int* width, int* height ) const
	525	{
	526	int w = 0;
	527	int h = 0;
	528	GetSize( &w, &h );
	529	};
	530
	531	void wxDC::SetTextForeground( const wxColour &col )
	532	{
	533	if (!Ok()) return;
	534	m_textForegroundColour = col;
	535	};
	536
	537	void wxDC::SetTextBackground( const wxColour &col )
	538	{
	539	if (!Ok()) return;
	540	m_textBackgroundColour = col;
	541	};
	542
	543	void wxDC::Clear()
	544	{
	545	if(!CocoaTakeFocus()) return;
	546
	547	NSRect boundsRect;
	548	if(!CocoaGetBounds(&boundsRect)) return;
	549
	550	NSGraphicsContext *context = [NSGraphicsContext currentContext];
	551	[context saveGraphicsState];
	552
	553	// Undo all transforms so when we draw our bounds rect we
	554	// really overwrite our bounds rect.
	555	CocoaUnapplyTransformations();
	556
	557	[m_backgroundBrush.GetNSColor() set];
	558	[NSBezierPath fillRect:boundsRect];
	559
	560	[context restoreGraphicsState];
	561	}
	562
	563	void wxDC::SetBackground(const wxBrush& brush)
	564	{
	565	m_backgroundBrush = brush;
	566	}
	567
	568	void wxDC::SetPalette(const wxPalette&)
	569	{
	570	}
	571
	572	void wxDC::SetLogicalFunction(int)
	573	{
	574	}
	575
	576
	577	void wxDC::SetMapMode( int mode )
	578	{
	579	switch (mode)
	580	{
	581	case wxMM_TWIPS:
	582	break;
	583	case wxMM_POINTS:
	584	break;
	585	case wxMM_METRIC:
	586	break;
	587	case wxMM_LOMETRIC:
	588	break;
	589	default:
	590	case wxMM_TEXT:
	591	SetLogicalScale( 1.0, 1.0 );
	592	break;
	593	};
	594	if (mode != wxMM_TEXT)
	595	{
	596	};
	597	};
	598
	599	void wxDC::SetUserScale( double x, double y )
	600	{
	601	// allow negative ? -> no
	602	m_userScaleX = x;
	603	m_userScaleY = y;
	604	ComputeScaleAndOrigin();
	605	};
	606
	607	void wxDC::SetLogicalScale( double x, double y )
	608	{
	609	// allow negative ?
	610	m_logicalScaleX = x;
	611	m_logicalScaleY = y;
	612	ComputeScaleAndOrigin();
	613	};
	614
	615	void wxDC::SetLogicalOrigin( wxCoord x, wxCoord y )
	616	{
	617	m_logicalOriginX = x * m_signX; // is this still correct ?
	618	m_logicalOriginY = y * m_signY;
	619	ComputeScaleAndOrigin();
	620	};
	621
	622	void wxDC::SetDeviceOrigin( wxCoord x, wxCoord y )
	623	{
	624	ComputeScaleAndOrigin();
	625	};
	626
	627	void wxDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
	628	{
	629	m_signX = (xLeftRight ? 1 : -1);
	630	m_signY = (yBottomUp ? -1 : 1);
	631	ComputeScaleAndOrigin();
	632	};
	633
	634	void wxDC::ComputeScaleAndOrigin(void)
	635	{
	636	// CMB: copy scale to see if it changes
	637	double origScaleX = m_scaleX;
	638	double origScaleY = m_scaleY;
	639
	640	m_scaleX = m_logicalScaleX * m_userScaleX;
	641	m_scaleY = m_logicalScaleY * m_userScaleY;
	642
	643	// CMB: if scale has changed call SetPen to recalulate the line width
	644	if (m_scaleX != origScaleX \|\| m_scaleY != origScaleY)
	645	{
	646	// this is a bit artificial, but we need to force wxDC to think
	647	// the pen has changed
	648	const wxPen* pen = & GetPen();
	649	wxPen tempPen;
	650	m_pen = tempPen;
	651	SetPen(* pen);
	652	}
	653	};