cairo/ChangeLog

2003-02-14  Carl Worth  <cworth@east.isi.edu>

	* xrgstate.c (_XrGStateShowImageTransform): Fixed transformed
	images which were sometimes 1 pixel too tall/wide.

2003-02-06  Carl Worth  <cworth@isi.edu>

	* xrpen.c (_XrPenVerticesNeeded): Fixed to use determinant rather
	than eigenvalues to compute maximal scaling of radius. Now avoids
	embarrassing segfaults due to NaN from the eigenvalue computation.

2003-01-28  Carl Worth  <cworth@isi.edu>

	* xrtraps.c (_XrTrapsTessellateTriangle): Fixed to not re-order
	the array provided as an argument. (Note: the rectangle and
	polyghon tessellators still perform reordering).

	* xrstroker.c (_XrStrokerJoin):
	(_XrStrokerCap): Implemented round caps and joins.
	(_XrStrokerDoneSubPath): Fixed initial cap, (was always being
	drawn on the inside previously).

	* xrpen.c (_XrPenInit): Fixed to keep pen vertex theta values all
	in device space.
	(_XrPenAddPoints): Removed the silly flags from the pen vertices,
	(in favor of just using the FindActiveVertex functions)
	(_XrPenFindActiveCWVertexIndex):
	(_XrPenFindActiveCCWVertexIndex): Added functions needed for round
	caps/joins.

	* xrgstate.c (_XrGStateSetDash): Fixed to accept a NULL dash array
	to revert to no dashing.

2003-01-28  Carl Worth  <cworth@east.isi.edu>

	* xrtraps.c (_XrTrapsTessellateTriangle): Restored triangle
	tessellation functionality, (I think it's correct this time).

	* xrstroker.c (_XrStrokerJoin): Bevel joins now use triangle
	tessellation rather than polygon tessellation.

2003-01-24  Carl Worth  <cworth@east.isi.edu>

	* xrpolygon.c (_XrPolygonAddEdge): Fixed to handle multiple
	sub-polygons.

	* xrstroker.c (_XrStrokerJoin): Fixed handling of miter limit.

	* local.def: Added local.def for building outside the xc tree.

2002-12-03  Carl Worth  <cworth@isi.edu>

	* xrstroker.c (_XrStrokerJoin):
	(_XrStrokerCap): Fixed to track change in winding rule parameter
	to XrTrapsTessellatePolygon, (otherwise self-intersecting splines
	suddenly had holes).

	* xrpen.c (_XrPenStrokeSpline): Fixed to track change in winding
	rule parameter to XrTrapsTessellatePolygon.

2002-11-11  Carl Worth  <cworth@isi.edu>

	* xrtransform.c (_XrTransformBoundingBox): Added support for
	transforming a bounding box, (an axis-aligned rectangle prior to
	transformation). The ShowImage support needs this.
	(_XrTransformComputeInverse): Now catches error case for
	non-invertible matrix.

	* xrsurface.c (_XrSurfaceSetTransform): Fixed ordering of matrix
	for call to RenderSetPictureTransform

	* xrgstate.c (_XrGStateSetMatrix): 
	(_XrGStateIdentityMatrix): Support for new Xr matrix functions.
	(_XrGStateShowImage): 
	(_XrGStateShowImageTransform): Fixed transformation of images.

	* xr.c (XrSetMatrix): 
	(XrDefaultMatrix): 
	(XrIdentityMatrix): Added 3 matrix manipulation functions.

2002-11-04  Carl Worth  <cworth@isi.edu>

	* xrsurface.c (_XrSurfaceDereference):
	(_XrSurfaceDereferenceDestroy): Fixed bug in reference counting
	logic.
	(_XrSurfaceSetDrawableWH): XrSurface now keeps track of its width/height.
	(_XrSurfaceGetDrawable): 
	(_XrSurfaceGetWidth): 
	(_XrSurfaceGetHeight): 
	(_XrSurfaceGetDepth): New accessor functions.

	* xrgstate.c (_XrGStateBeginGroup):
	(_XrGStateEndGroup): Preliminary group support. Not too efficient
	since it always composite's a full-size picture from child group
	to parent picture, (even if only a small portion has
	non-transparent pixels).
	(_XrGStateShowImageTransform): Fixed show image to use current
	alpha value.

	* xrfont.c (_XrFontResolveXftFont): Fixed memory leak
	(FcPatternDestroy). There's still some meory
	leaking/left-reachable in Xft/fontconfig that I need to track
	down.

	* xr.c (XrPushGroup):
	(XrPopGroup): Added preliminary group support. I think I like
	having this in the API as it takes several burdens away from the
	user, (plus it matches the PDF model). Things to do still: think
	about the names of these functions. Re-read the PDF semantics to
	see if we're missing anything.

2002-11-02  Carl Worth  <cworth@isi.edu>

	* xrsurface.c (_XrSurfaceSetImage): Fixed leak of the image
	pixmap.

2002-11-01  Carl Worth  <cworth@east.isi.edu>

	* xrsurface.c (_XrSurfaceSetImage): Prelimary image
	support. Really only works with ARGB32. I still need to think
	about what formats will be supported.
	(_XrSurfaceSetTransform): Partial support for transformed
	surfaces.
	(_XrSurfaceGetXcSurface): Moved all creation/destruction of the
	XcSurface into this function so that it is only lazily created
	when needed.

	* xrgstate.c (_XrGStateSetCurrentPt): gstate now can throw errors
	when an operation needs current point, but it doesn't exist yet.
	(_XrGStateShowImage, _XrGStateShowImageTransform): Preliminary
	image support, (currently it only scales according to the CTM. The
	matrix passed with the image doesn't do anything yet.)

	* xrfont.c (_XrFontInitCopy): Removed bogus out of memory errors.

	* xr.c (XrShowImage, XrShowImageTransform): Added very preliminary
	image support. Things don't work completely yet and all the
	interfaces are likely to change.
	(XrGetStatusString): Added function to map status values to strings.

2002-10-31  Carl Worth  <cworth@isi.edu>

	* xrfont.c (_XrFontInit):
	(_XrFontInitCopy):
	(_XrFontDeinit):
	(_XrFontSelect):
	(_XrFontResolveXftFont): Updated by ripping all font support from
	Xc and just putting a couple of calls to Xft and fontconfig right
	here in xrfont.

	* xr.c (XrTextExtents): Added XrTextExtents.

2002-10-29  Carl Worth  <cworth@east.isi.edu>

	* xrgstate.c (_XrGStateSelectFont, _XrGStateScaleFont)
	(_XrGStateTransformFont, _XrGStateShowText): Added basic font
	support.

	* xr.c (XrSelectFont, XrScaleFont, XrTransformFont): Added basic
	font support.

2002-10-28  Carl Worth  <cworth@east.isi.edu>

	* xrstate.c (_XrStatePop): Added error case for XrRestore without
	matching XrSave.

	* xrsurface.c (_XrSurfaceInit, _XrSurfaceReference)
	(_XrSurfaceDereference): Added reference counting to XrSurface to
	patch a memory leak.

2002-10-26  Carl Worth  <cworth@isi.edu>

	* xrtransform.c (_XrTransformDistance):
	(_XrTransformPoint): changed to use individual X/Y arguments
	rather tha an XPointDouble. This improves readability since
	_XrTransformDistance is now always called with arguments of dx/dy
	rather than pt.x/pt.y.

	* xrpath.c (_XrPathMoveTo):
	(_XrPathLineTo):
	(_XrPathCurveTo):
	(_XrPathClosePath): replaced public _XrPathAdd with explicit named
	functions. This cleans up the implementation since _XrPathAdd,
	which is unsafe with respect to argument consistency, is now
	private. Also, since the _XrGState now maintains the current
	point, I dropped all relative path operators from the XrPath data
	structures.

	* xrgstate.c (_XrGStateMoveTo):
	(_XrGStateLineTo):
	(_XrGStateCurveTo):
	(_XrGStateRelMoveTo):
	(_XrGStateRelLineTo):
	(_XrGStateRelCurveTo): Replaces _XrGStateAddPathOp and
	_XrGStateAddUnaryPathOp with explicit named functions for each
	operator type. This change introduces the current point state into
	the XrGState structure rather than postponing its calculation
	until path interpretation.

	* xrgstate.c (_XrGStateSetDrawable):
	(_XrGStateSetVisual):
	(_XrGStateSetFormat):
	(_XrGStateSetOperator):
	(_XrGStateSetRGBColor):
	(_XrGStateSetTolerance):
	(_XrGStateSetAlpha):
	(_XrGStateSetFillRule):
	(_XrGStateSetLineWidth):
	(_XrGStateSetLineCap):
	(_XrGStateSetLineJoin):
	(_XrGStateSetMiterLimit):
	(_XrGStateTranslate):
	(_XrGStateScale):
	(_XrGStateRotate):
	(_XrGStateConcatMatrix):
	(_XrGStateNewPath): : Added XrStatus return values to many
	functions -- just for consistency, these functions can not return
	errors in any case.

	* xr.c (XrShowText): Started to ass XrShowText, (still not functional)

2002-10-24  Carl Worth  <cworth@isi.edu>

	* xr.c (XrSetFillRule): Added support to set fill rule.

2002-10-23  Carl Worth  <cworth@isi.edu>

	* xrtraps.c (_XrTrapsTessellatePolygon): Fix for polygon with
	multiple sub-polygons that are disjoint in Y.

2002-07-16  Carl Worth  <cworth@isi.edu>

	* Xr.h: Renamed xrpicture.c to xrsurface.c as part of the move.
	Added XrSetFormat, XrSetOperator, XrSetLineCap, XrSetLineJoin, and
	XrSetMiterLimit, (although the line style drawing code is not all
	in place yet).

	* xrpath.c (XrPathLineTo): Changed LineTo semantics to be the same
	as MoveTo if there was no previous MoveTo.

	* xrtraps.c: Added tessellation code, (lifted from
	XRenderCompositeDoublePoly which can now disappear).

	* xrgstate.c: Changed stroke code to incrementally build a list of
	trapezoids rather than forming one giant polygonal outline and
	rendering that. This should be more efficient.
	(_XrGStateFillPath): Now uses Xr's own tessellation along with
	XcCompositeTrapezoids.

	* Xr.h: Moved all of Xr away from Xrender to the new Xc library.

	* xrsurface.c: Renamed from xrpicture.c, (part of the move from
	XRender to Xc).

	* Started keeping a ChangeLog ;-)