AppKit/CoreGraphics/CGContextCanvas.j File Reference

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Go to the source code of this file.

Defines
#define	rotate_scale(a, b, c, d)
#define	scale_rotate(a, b, c, d)
Functions
function	CGContextAddArc (aContext, x, y, radius, startAngle, endAngle, clockwise)
function	CGContextAddArcToPoint (aContext, x1, y1, x2, y2, radius)
function	CGContextAddCurveToPoint (aContext, cp1x, cp1y, cp2x, cp2y, x, y)
function	CGContextAddLineToPoint (aContext, x, y)
function	CGContextAddPath (aContext, aPath)
function	CGContextAddRect (aContext, aRect)
function	CGContextAddRects (aContext, rects, count)
function	CGContextBeginPath (aContext)
function	CGContextClearRect (aContext, aRect)
function	CGContextClip (aContext)
function	CGContextClipToRect (aContext, aRect)
function	CGContextClipToRects (aContext, rects, count)
function	CGContextClosePath (aContext)
function	CGContextDrawPath (aContext, aMode)
function	CGContextFillRect (aContext, aRect)
function	CGContextFillRects (aContext, rects, count)
function	CGContextMoveToPoint (aContext, x, y)
function	CGContextRestoreGState (aContext)
function	CGContextRotateCTM (aContext, anAngle)
function	CGContextSaveGState (aContext)
function	CGContextScaleCTM (aContext, sx, sy)
function	CGContextSetAlpha (aContext, anAlpha)
function	CGContextSetBlendMode (aContext, aBlendMode)
function	CGContextSetFillColor (aContext, aColor)
function	CGContextSetLineCap (aContext, aLineCap)
function	CGContextSetLineJoin (aContext, aLineJoin)
function	CGContextSetLineWidth (aContext, aLineWidth)
function	CGContextSetMiterLimit (aContext, aMiterLimit)
function	CGContextSetShadow (aContext, aSize, aBlur)
function	CGContextSetShadowWithColor (aContext, aSize, aBlur, aColor)
function	CGContextSetStrokeColor (aContext, aColor)
function	CGContextStrokeRect (aContext, aRect)
function	CGContextTranslateCTM (aContext, tx, ty)
function	eigen (anAffineTransform)
	if (CPFeatureIsCompatible(CPJavaScriptCanvasTransformFeature))
Variables
var	CANVAS_COMPOSITE_TABLE = "source-over" ]
var	CANVAS_LINECAP_TABLE = "square" ]
var	CANVAS_LINEJOIN_TABLE = "bevel" ]

---

Define Documentation

#define rotate_scale	(		a,
			b,
			c,
			d
	)

Value:

var sign = (a * d < 0.0 || b * c > 0.0) ? -1.0 : 1.0;\
            a1 = (Math.atan2(sign * b, sign * a) + Math.atan2(-c, d)) / 2.0,\
            cos = COS(a1),\
            sin = SIN(a1);\
               \
        if (cos == 0)\
        {\
            sx = b / sin;\
            sy = -c / sin;\
        }\
        else if (sin == 0)\
        {\
            sx = a / cos;\
            sy = d / cos;\
        }\
        else\
        {\
            abs_cos = ABS(cos);\
            abs_sin = ABS(sin);\
            \
            sx = (abs_cos * a / cos + abs_sin * b / sin) / (abs_cos + abs_sin);\
            sy = (abs_cos * d / cos + abs_sin * -c / sin) / (abs_cos + abs_sin);\
        }\

Definition at line 324 of file CGContextCanvas.j.

#define scale_rotate	(		a,
			b,
			c,
			d
	)

Value:

var sign = (a * d < 0.0 || b * c > 0.0) ? -1.0 : 1.0, \
            a2 = (ATAN2(b, d) + ATAN2(-sign * c, sign * a)) / 2.0, \
            cos = COS(a2),\
            sin = SIN(a2);\
        \
        if (cos == 0)\
        {\
            sx = -c / sin;\
            sy = b / sin;\
        }\
        else if (sin == 0)\
        {\
            sx = a / cos;\
            sy = d / cos;\
        }\
        else\
        {\
            abs_cos = ABS(cos);\
            abs_sin = ABS(sin);\
            \
            sx = (abs_cos * a / cos + abs_sin * -c / sin) / (abs_cos + abs_sin);\
            sy = (abs_cos * d / cos + abs_sin * b / sin) / (abs_cos + abs_sin);\
        }\

Definition at line 299 of file CGContextCanvas.j.

---

Function Documentation

function CGContextAddArc	(	aContext	,
		x	,
		y	,
		radius	,
		startAngle	,
		endAngle	,
		clockwise
	)

Definition at line 81 of file CGContextCanvas.j.

function CGContextAddArcToPoint	(	aContext	,
		x1	,
		y1	,
		x2	,
		y2	,
		radius
	)

Definition at line 88 of file CGContextCanvas.j.

function CGContextAddCurveToPoint	(	aContext	,
		cp1x	,
		cp1y	,
		cp2x	,
		cp2y	,
		x	,
		y
	)

Definition at line 93 of file CGContextCanvas.j.

function CGContextAddLineToPoint	(	aContext	,
		x	,
		y
	)

Definition at line 98 of file CGContextCanvas.j.

function CGContextAddPath	(	aContext	,
		aPath
	)

Definition at line 103 of file CGContextCanvas.j.

function CGContextAddRect	(	aContext	,
		aRect
	)

Definition at line 138 of file CGContextCanvas.j.

function CGContextAddRects	(	aContext	,
		rects	,
		count
	)

Definition at line 143 of file CGContextCanvas.j.

function CGContextBeginPath

(

aContext

)

Definition at line 157 of file CGContextCanvas.j.

function CGContextClearRect	(	aContext	,
		aRect
	)

Definition at line 172 of file CGContextCanvas.j.

function CGContextClip

(

aContext

)

Definition at line 212 of file CGContextCanvas.j.

function CGContextClipToRect	(	aContext	,
		aRect
	)

Definition at line 217 of file CGContextCanvas.j.

function CGContextClipToRects	(	aContext	,
		rects	,
		count
	)

Definition at line 226 of file CGContextCanvas.j.

function CGContextClosePath

(

aContext

)

Definition at line 162 of file CGContextCanvas.j.

function CGContextDrawPath	(	aContext	,
		aMode
	)

Definition at line 177 of file CGContextCanvas.j.

function CGContextFillRect	(	aContext	,
		aRect
	)

Definition at line 188 of file CGContextCanvas.j.

function CGContextFillRects	(	aContext	,
		rects	,
		count
	)

Definition at line 193 of file CGContextCanvas.j.

function CGContextMoveToPoint	(	aContext	,
		x	,
		y
	)

Definition at line 167 of file CGContextCanvas.j.

function CGContextRestoreGState

(

aContext

)

Definition at line 51 of file CGContextCanvas.j.

function CGContextRotateCTM	(	aContext	,
		anAngle
	)

Definition at line 284 of file CGContextCanvas.j.

function CGContextSaveGState

(

aContext

)

Definition at line 46 of file CGContextCanvas.j.

function CGContextScaleCTM	(	aContext	,
		sx	,
		sy
	)

Definition at line 289 of file CGContextCanvas.j.

function CGContextSetAlpha	(	aContext	,
		anAlpha
	)

Definition at line 236 of file CGContextCanvas.j.

function CGContextSetBlendMode	(	aContext	,
		aBlendMode
	)

Definition at line 76 of file CGContextCanvas.j.

function CGContextSetFillColor	(	aContext	,
		aColor
	)

Definition at line 241 of file CGContextCanvas.j.

function CGContextSetLineCap	(	aContext	,
		aLineCap
	)

Definition at line 56 of file CGContextCanvas.j.

function CGContextSetLineJoin	(	aContext	,
		aLineJoin
	)

Definition at line 61 of file CGContextCanvas.j.

function CGContextSetLineWidth	(	aContext	,
		aLineWidth
	)

Definition at line 66 of file CGContextCanvas.j.

function CGContextSetMiterLimit	(	aContext	,
		aMiterLimit
	)

Definition at line 71 of file CGContextCanvas.j.

function CGContextSetShadow	(	aContext	,
		aSize	,
		aBlur
	)

Definition at line 269 of file CGContextCanvas.j.

function CGContextSetShadowWithColor	(	aContext	,
		aSize	,
		aBlur	,
		aColor
	)

Definition at line 276 of file CGContextCanvas.j.

function CGContextSetStrokeColor	(	aContext	,
		aColor
	)

Definition at line 264 of file CGContextCanvas.j.

function CGContextStrokeRect	(	aContext	,
		aRect
	)

Definition at line 207 of file CGContextCanvas.j.

function CGContextTranslateCTM	(	aContext	,
		tx	,
		ty
	)

Definition at line 294 of file CGContextCanvas.j.

function eigen

(

anAffineTransform

)

Definition at line 349 of file CGContextCanvas.j.

if

(

CPFeatureIsCompatible(CPJavaScriptCanvasTransformFeature)

)

Definition at line 355 of file CGContextCanvas.j.

---

Variable Documentation

var CANVAS_COMPOSITE_TABLE = "source-over" ]

Definition at line 25 of file CGContextCanvas.j.

var CANVAS_LINECAP_TABLE = "square" ]

Definition at line 23 of file CGContextCanvas.j.

var CANVAS_LINEJOIN_TABLE = "bevel" ]

Definition at line 24 of file CGContextCanvas.j.