示例#1
0
//-----------------------------------------------------------------------------
void CGDrawContext::applyLineStyle (CGContextRef context)
{
	switch (currentState.lineStyle.getLineCap ())
	{
		case CLineStyle::kLineCapButt: CGContextSetLineCap (context, kCGLineCapButt); break;
		case CLineStyle::kLineCapRound: CGContextSetLineCap (context, kCGLineCapRound); break;
		case CLineStyle::kLineCapSquare: CGContextSetLineCap (context, kCGLineCapSquare); break;
	}
	switch (currentState.lineStyle.getLineJoin ())
	{
		case CLineStyle::kLineJoinMiter: CGContextSetLineJoin (context, kCGLineJoinMiter); break;
		case CLineStyle::kLineJoinRound: CGContextSetLineJoin (context, kCGLineJoinRound); break;
		case CLineStyle::kLineJoinBevel: CGContextSetLineJoin (context, kCGLineJoinBevel); break;
	}
	if (currentState.lineStyle.getDashCount () > 0)
	{
		CGFloat* dashLengths = new CGFloat [currentState.lineStyle.getDashCount ()];
		for (int32_t i = 0; i < currentState.lineStyle.getDashCount (); i++)
		{
			dashLengths[i] = currentState.frameWidth * currentState.lineStyle.getDashLengths ()[i];
		}
		CGContextSetLineDash (context, currentState.lineStyle.getDashPhase (), dashLengths, currentState.lineStyle.getDashCount ());
		delete [] dashLengths;
	}
}
示例#2
0
void GraphicsContext::setLineCap(LineCap cap)
{
    if (paintingDisabled())
        return;
    switch (cap) {
    case ButtCap:
        CGContextSetLineCap(platformContext(), kCGLineCapButt);
        break;
    case RoundCap:
        CGContextSetLineCap(platformContext(), kCGLineCapRound);
        break;
    case SquareCap:
        CGContextSetLineCap(platformContext(), kCGLineCapSquare);
        break;
    }
}
示例#3
0
bool GiCanvasIos::beginPaintBuffered(bool fast, bool autoscale)
{
    if (m_draw->getContext() || !gs()
        || !m_draw->createBufferBitmap(m_draw->width(), m_draw->height(),
                                       autoscale ? m_draw->_scale : 1.f)) {
        return false;
    }
    
    RECT_2D clipBox = { 0, 0, m_draw->width(), m_draw->height() };
    owner()->_beginPaint(clipBox);
    
    m_draw->_fast = fast;
    m_draw->_ctxused[0] = false;
    m_draw->_ctxused[1] = false;
    
    CGContextRef context = m_draw->getContext();
    bool antiAlias = !fast && gs()->isAntiAliasMode();
    
    CGContextSetAllowsAntialiasing(context, antiAlias);
    CGContextSetShouldAntialias(context, antiAlias);
    CGContextSetFlatness(context, fast ? 20 : 1);
    
    CGContextSetLineCap(context, kCGLineCapRound);
    CGContextSetLineJoin(context, kCGLineJoinRound);
    owner()->setMaxPenWidth(-1, 0.5f / m_draw->_scale);
    
    return true;
}
示例#4
0
bool GiCanvasIos::beginPaint(CGContextRef context, bool fast, bool buffered)
{
    if (m_draw->getContext() || !context)
        return false;

    if (gs()) {
        CGRect rc = CGContextGetClipBoundingBox(context);
        RECT_2D clipBox = { rc.origin.x, rc.origin.y, 
            rc.origin.x + rc.size.width, rc.origin.y + rc.size.height };
        owner()->_beginPaint(clipBox);
    }

    m_draw->_context = context;
    m_draw->_fast = fast;
    m_draw->_ctxused[0] = false;
    m_draw->_ctxused[1] = false;
    
    if (buffered && gs()) {
        m_draw->createBufferBitmap(m_draw->width(), m_draw->height(), m_draw->_scale);
        context = m_draw->getContext();
    }

    bool antiAlias = !fast && (!gs() || gs()->isAntiAliasMode());
    CGContextSetAllowsAntialiasing(context, antiAlias);
    CGContextSetShouldAntialias(context, antiAlias);
    CGContextSetFlatness(context, fast ? 20 : 1);

    CGContextSetLineCap(context, kCGLineCapRound);
    CGContextSetLineJoin(context, kCGLineJoinRound);
    if (owner())        // 设置最小线宽为0.5像素,使用屏幕放大倍数以便得到实际像素值
        owner()->setMaxPenWidth(-1, 0.5f / m_draw->_scale);

    return true;
}
示例#5
0
    bool setPen(const GiContext* ctx)
    {
        bool changed = !_ctxused[0];
        
        if (ctx && !ctx->isNullLine())
        {
            if (_gictx.getLineColor() != ctx->getLineColor()) {
                _gictx.setLineColor(ctx->getLineColor());
                changed = true;
            }
            if (_gictx.getLineWidth() != ctx->getLineWidth()) {
                _gictx.setLineWidth(ctx->getLineWidth(), ctx->isAutoScale());
                changed = true;
            }
            if (_gictx.getLineStyle() != ctx->getLineStyle()) {
                _gictx.setLineStyle(ctx->getLineStyle());
                changed = true;
            }
        }
        
        if (!ctx) ctx = &_gictx;
        if (!ctx->isNullLine() && changed)
        {
            _ctxused[0] = true;
            
            GiColor color = ctx->getLineColor();
            if (gs())
                color = gs()->calcPenColor(color);
            CGContextSetRGBStrokeColor(getContext(), 
                                       toFloat(color.r), toFloat(color.g),
                                       toFloat(color.b), toFloat(color.a));
            
            float w = ctx->getLineWidth();
            w = gs() ? gs()->calcPenWidth(w, ctx->isAutoScale()) : (w < 0 ? -w : 1);
            CGContextSetLineWidth(getContext(), _fast && w > 1 ? w - 1 : w); // 不是反走样就细一点
            
            int style = ctx->getLineStyle();
            CGFloat pattern[6];
            
            if (style >= 0 && style < sizeof(lpats)/sizeof(lpats[0])) {
                if (lpats[style].arr && !_fast) {                           // 快速画时不要线型
                    makeLinePattern(pattern, lpats[style].arr, lpats[style].n, w);
                    CGContextSetLineDash(getContext(), 0, pattern, lpats[style].n);
                }
                else {
                    CGContextSetLineDash(getContext(), 0, NULL, 0);
                }
                CGContextSetLineCap(getContext(), style > 0 ? kCGLineCapButt : kCGLineCapRound);
            }
        }

        return !ctx->isNullLine();
    }
示例#6
0
static void Quartz_SetLineEnd(R_GE_lineend lend, NewDevDesc *dd)
{
    QuartzDesc *xd = (QuartzDesc*)dd->deviceSpecific;
    CGLineCap linecap;
    switch (lend) {
    case GE_ROUND_CAP:
      linecap = kCGLineCapRound;
      break;
    case GE_BUTT_CAP:
      linecap = kCGLineCapButt;
      break;
    case GE_SQUARE_CAP:
      linecap = kCGLineCapSquare;
      break;
    default:
      error(_("Invalid line end"));
    }
    CGContextSetLineCap( GetContext(xd), linecap);
}
示例#7
0
static void initBackground(unsigned w, unsigned h, unsigned max)
{
    CGColorSpaceRef colorspace;
    CGContextRef  gc;
    unsigned char *data;
    float cx, cy;
    float radius, needle;

    data = (unsigned char *)malloc(w * h * 4);

    colorspace = CGColorSpaceCreateWithName(kCGColorSpaceGenericRGB);
    gc         = CGBitmapContextCreate(data, w, h, 8, w * 4, colorspace,
                                   kCGImageAlphaPremultipliedFirst | kCGBitmapByteOrder32Host);

    cx    = CENTERX * w;
    cy    = CENTERY * h;
    radius = 0.5 * (w > h ? w : h);
    needle = radius * 0.85;

    // background
    CGContextTranslateCTM(gc, 0.0, h);
    CGContextScaleCTM(gc, 1.0, -1.0);
    CGContextClearRect(gc, CGRectMake(0, 0, w, h));
    CGContextSetRGBFillColor(gc, 0.0, 0.0, 0.0, 0.7);
    CGContextAddArc(gc, cx, cy, radius, 0, 2*M_PI, false);
    CGContextFillPath(gc);

    CGGradientRef gradient;
    size_t num_locations = 2;
    CGFloat locations[2] = { 0.0, 1.0 };
    CGFloat components[8] = { 1.0, 1.0, 1.0, 0.5,  // Start color
                              0.0, 0.0, 0.0, 0.0
                            }; // End color

    gradient = CGGradientCreateWithColorComponents (colorspace, components,
               locations, num_locations);
    // top rim light
    CGContextSaveGState(gc);
    CGContextAddArc(gc, cx, cy, radius, 0, 2*M_PI, false);
    CGContextAddArc(gc, cx, cy, needle*1.05, 0, 2*M_PI, false);
    CGContextEOClip(gc);
    CGContextDrawRadialGradient (gc, gradient,
                                 CGPointMake(cx, cy*1.00), radius*1.01,
                                 CGPointMake(cx, cy*0.96), radius*0.98, 0);
    // bottom rim light
    CGContextDrawRadialGradient (gc, gradient,
                                 CGPointMake(cx, cy*1.00), radius*1.01,
                                 CGPointMake(cx, cy*1.04), radius*0.98, 0);
    // top bevel
    CGContextDrawRadialGradient (gc, gradient,
                                 CGPointMake(cx, cy*2.2), radius*0.2,
                                 CGPointMake(cx, cy*1.0), radius*1.0, 0);
    // bottom bevel
    CGContextRestoreGState(gc);
    CGContextSaveGState(gc);
    CGContextAddArc(gc, cx, cy, needle*1.05, 0, 2*M_PI, false);
    CGContextAddArc(gc, cx, cy, needle*0.96, 0, 2*M_PI, false);
    CGContextEOClip(gc);
    CGContextDrawRadialGradient (gc, gradient,
                                 CGPointMake(cx, cy* -.5), radius*0.2,
                                 CGPointMake(cx, cy*1.0), radius*1.0, 0);

    CGGradientRelease(gradient);
    CGContextRestoreGState(gc);

    CGContextSetRGBFillColor(gc, 0.9, 0.9, 1.0, 1.0);
    CGContextSetRGBStrokeColor(gc, 0.9, 0.9, 1.0, 1.0);
    CGContextSetLineCap(gc, kCGLineCapRound);

    // draw several glow passes, with the content offscreen
    CGContextTranslateCTM(gc, 0, OFFSCREEN - 10);
    CGContextSetShadowWithColor(gc, CGSizeMake(0, OFFSCREEN), 48.0, CGColorCreateGenericRGB(0.5, 0.5, 1.0, 0.7));
    drawMarks(gc, w, h, max);
    CGContextTranslateCTM(gc, 0, 20);
    CGContextSetShadowWithColor(gc, CGSizeMake(0, OFFSCREEN), 48.0, CGColorCreateGenericRGB(0.5, 0.5, 1.0, 0.7));
    drawMarks(gc, w, h, max);
    CGContextTranslateCTM(gc, -10, -10);
    CGContextSetShadowWithColor(gc, CGSizeMake(0, OFFSCREEN), 48.0, CGColorCreateGenericRGB(0.5, 0.5, 1.0, 0.7));
    drawMarks(gc, w, h, max);
    CGContextTranslateCTM(gc, 20, 0);
    CGContextSetShadowWithColor(gc, CGSizeMake(0, OFFSCREEN), 48.0, CGColorCreateGenericRGB(0.5, 0.5, 1.0, 0.7));
    drawMarks(gc, w, h, max);
    CGContextTranslateCTM(gc, -10, -OFFSCREEN);

    // draw real content
    CGContextSetShadowWithColor(gc, CGSizeMake(0, 1), 6.0, CGColorCreateGenericRGB(0.7, 0.7, 1.0, 0.9));
    drawMarks(gc, w, h, max);

    glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA8, w, h, 0, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, data);

    CGContextRelease(gc);
    CGColorSpaceRelease(colorspace);
    free(data);
}
示例#8
0
void CFX_QuartzDeviceDriver::setStrokeInfo(const CFX_GraphStateData* graphState, FX_ARGB argb, FX_FLOAT lineWidth)
{
    if (NULL == graphState) {
        return;
    }
    CGContextSetLineWidth(_context, lineWidth);
    CGLineCap cap;
    switch (graphState->m_LineCap) {
        case CFX_GraphStateData::LineCapRound: {
                cap = kCGLineCapRound;
                break;
            }
        case CFX_GraphStateData::LineCapSquare: {
                cap = kCGLineCapSquare;
                break;
            }
        case CFX_GraphStateData::LineCapButt:
        default: {
                cap = kCGLineCapButt;
            }
    }
    CGContextSetLineCap(_context, cap);
    CGLineJoin join;
    switch (graphState->m_LineJoin) {
        case CFX_GraphStateData::LineJoinRound: {
                join = kCGLineJoinRound;
                break;
            }
        case CFX_GraphStateData::LineJoinBevel: {
                join = kCGLineJoinBevel;
                break;
            }
        case CFX_GraphStateData::LineJoinMiter:
        default: {
                join = kCGLineJoinMiter;
            }
    }
    CGContextSetLineJoin(_context, join);
    if (graphState->m_DashCount) {
#if CGFLOAT_IS_DOUBLE
        CGFloat* dashArray = new CGFloat[graphState->m_DashCount];
        if (!dashArray) {
            return;
        }
        for (int index = 0; index < graphState->m_DashCount; ++index) {
            dashArray[index] = graphState->m_DashArray[index];
        }
#else
        CGFloat* dashArray = (CGFloat*)graphState->m_DashArray;
#endif
        CGContextSetLineDash(_context, graphState->m_DashPhase, dashArray, graphState->m_DashCount);
#if CGFLOAT_IS_DOUBLE
        delete[] dashArray;
#endif
    }
    FX_INT32 a, r, g, b;
    ArgbDecode(argb, a, r, g, b);
    CGContextSetRGBStrokeColor(_context,
                               r / 255.f,
                               g / 255.f,
                               b / 255.f,
                               a / 255.f);
}
示例#9
0
void CGContextSetLineCap_wrap(CGContext *con, int cap) {
  CGContextSetLineCap(con, CGLineCap(cap));
}
示例#10
0
void MyTimerProc ( EventLoopTimerRef inTimer, void *inUserData )
{
    WindowRef window = (WindowRef)inUserData;
    
    static int i = 0;
    static int j = 0;
    static int step = 5;
    GrafPtr curPort;
    CGContextRef context;
    CGrafPtr windowPort = GetWindowPort( window );
        
    GetPort(&curPort);
    SetPort(windowPort);
    
    CreateCGContextForPort( windowPort, &context );
    
    //	Do our drawing in here
    CGContextSetGrayFillColor( context, 0.0, 1.0 );
    CGContextFillRect( context, CGRectMake( 0, 0, 800, 600 ) );

    CGContextSetGrayFillColor( context, 1.0, 1.0 );
    CGContextSetRGBStrokeColor( context, 1.0, 0.0, 0.0, 1.0 );
	CGContextSetLineWidth( context, 5.0 );
    CGContextSetLineCap( context, kCGLineCapRound );
    CGContextSetLineJoin( context, kCGLineJoinRound );
    CGContextSetMiterLimit( context, 5 );

    
    //	Draw each of the 4 transform demos
    //
    //	1.  Translate - move the origin, draw the graphic
    
    //	Place the origin in the llh corner of the upper left quadrant
    CGContextSaveGState( context );
    CGContextTranslateCTM( context, i / 2, i / 2 + 300 );
    CGContextRotateCTM( context, -2.0 * 3.1416 / 8 );
    drawGraphic( context, 0, 0 );
    CGContextRestoreGState( context );


    //	2.  Rotate - move origin, do rotation, draw the graphic
    
    //	Put the origin back into the llh corner of the upper right quadrant
    CGContextSaveGState( context );
    
    if ( j < 1000/2 )
    {
        //	Rotate around left circle
        CGContextTranslateCTM( context, 500, 450 );
        CGContextRotateCTM( context, -j * 3.1416 * 2.0 / 500.0 - 3.1416 );
        CGContextTranslateCTM( context, -100, -20 );
        drawGraphic( context, 0, 0 );
    }
    if ( j >= 1000/2 )
    {
        //	Rotate under bottom half and over top right 1/4
        CGContextTranslateCTM( context, 700, 450 );
        CGContextRotateCTM( context, j * 3.1416 * 2.0 / 500.0 );
        CGContextScaleCTM( context, 1, 1 );
        CGContextTranslateCTM( context, -100, 20 );
        CGContextRotateCTM( context, 3.1416 );
        drawGraphic( context, 0, 0 );
    }

    CGContextRestoreGState( context );
    

    //  3.  Scale - move origin, set scale, draw the graphic
    CGContextSaveGState( context );
    CGContextScaleCTM( context, i * 400.0 / 500.0 / 40.0, i * 300.0 / 500.0 / 40.0 );
    CGContextRotateCTM( context, -3.1416 / 4 );
    drawGraphic( context, 0, 0 );
    CGContextRestoreGState( context );
    

    //  4.  Show the basic graphic
    CGContextTranslateCTM( context, 600, 150 );
    drawGraphic( context, 0, 0 );
    
    CGContextFlush( context );
    CGContextRelease( context );
    
    SetPort ( curPort );
    
    i += step;
    j += abs( step );
    
    if ( i >= 500 )
    {
        step = -step;
    }
    
    if ( i <= 0 )
    {
        step = -step;
        j = 0;
    }
}