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2003-07-30 Carl Worth <cworth@isi.edu>
* src/cairoint.h:
* src/cairo.c: Fixed a disagreement over whether some internal
cairo_gstate_t functions had an '_' prefix or not.
* src/cairo_traps.c (_line_segs_intersect_ceil): Add one more
conditional intersect to push past some fill bugs.
* src/cairo_surface.c (cairo_surface_create_for_drawable):
(cairo_surface_create_for_image):
(cairo_surface_put_image):
(_cairo_surface_pull_image):
(_cairo_surface_push_image):
(cairo_surface_set_matrix):
(cairo_surface_get_matrix):
(cairo_surface_set_repeat):
(_cairo_surface_composite):
(_cairo_surface_fill_rectangle):
(_cairo_surface_fill_rectangles):
(_cairo_surface_composite_trapezoids): Absorb all functionality
previously in the Xc library.
* src/cairo_pen.c (_cairo_pen_init): Don't store floating point
theta in the pen. Instead, sort vertices by fixed point slope
comparisons.
(_cairo_pen_add_points): Fixed to remove duplicate pen vertices
appearing at beginning and end of vertex array.
(_pen_vertex_compare): New fixed-point "angle" comparison for pen
vertices. A bit trickier than before, but much more accurate.
* src/cairo_path_stroke.c (_cairo_stroker_face_clockwise): Share
clockwise calculation with other modules.
* src/cairo_path_bounds.c:
* src/cairo_path_fill.c:
* src/cairo_path_stroke.c:
* src/cairo_pen.c:
* src/cairo_polygon.c:
* src/cairo_spline.c:
* src/cairo_traps.c:
* src/cairo_path.c: Replaced all references to
XFixed, XPointFixed, XLineFixed, and XTrapezoid with new
cairo_fixed_t, cairo_point_t, cairo_line_t, and cairo_trapezoid_t.
* src/cairo_path.c: (_cairo_path_interpret): Made the path
interpreter callback names consistent, (eg. add_edge rather than
AddEdge).
* src/cairo_gstate.c (_cairo_gstate_text_extents): Now silently
exits for a non X surface, (avoids a crash until we can implement
the libic text backend).
* src/cairo_gstate.c (_cairo_gstate_end_group):
(_cairo_gstate_clip_and_composite_trapezoids):
(_cairo_gstate_show_surface): Replaced all XcCalls with
corresponding cairo_surface_calls.
* src/cairo_gstate.c (_cairo_gstate_transform_point):
(_cairo_gstate_transform_font):
(_cairo_gstate_text_extents): Renamed from the garbled names
(eg. cairo_gstateransform_point) leftover from the great renaming.
* src/cairo_color.c (_cairo_color_set_rgb): Reworked cairo_color_t
to eliminate reference to an XcColor object.
* src/cairo.h: Dropped include of <Xc.h>, added
<X11/extensions/Xrender.h>, <fontconfig/fontconfig.h>, and <ic.h>
* src/cairo.c (cairo_get_fill_rule): Added missing cairo_get_fill_rule.
* configure.in (PKG_CHECK_MODULES): Drops xc, add libic
* cairo.pc.in (Requires): Drop xc, add libic.
2003-07-25 Carl Worth <cworth@isi.edu>
* src/cairo_traps.c (_line_segs_intersect_ceil): We don't need a
loop here, (just a conditional increment). This time, we've
actually done the error analysis to back this up.
2003-07-24 Carl Worth <cworth@isi.edu>
* src/cairo_traps.c (cairo_traps_tessellate_polygon): Massive
cleanup of polygon tessellation, (it might actually be correct
now).
2003-07-23 Carl Worth <cworth@isi.edu>
* src/cairoint.h: Introduced some cairo_fixed_*_t types. This is
the first baby step toward ripping X dependencies out of the Cairo
headers.
* src/cairo_traps.c (_compute_x): Converted from floating point to
fixed point.
(_line_seg_intersection_ceil): Now increments y value once if the
initial y value computed is less than the actual intersection
point.
* src/cairo_traps.c (_compare_cairo_edge_by_slope): Converted from
floating point to fixed point.
* src/cairo_pen.c (_slope_clockwise): Converted from floating
point to fixed point.
2003-07-19 Carl Worth <cworth@isi.edu>
* src/cairo_traps.c (cairo_traps_tessellate_polygon): Fixed some
sorting problems with two intersections very near the same
vertical position. (There are still some reamining problems
though).
(cairo_traps_tessellate_polygon): Better fix for the same
bug. Should cover all cases, (and it's moe efficient too).
2003-07-18 Carl Worth <cworth@east.isi.edu>
* src/cairo.h: Fixed some inconsistent tag/typedef names that were
missed in the great renaming.
2003-07-18 Carl Worth <cworth@isi.edu>
* src/cairo.h: Renamed everything from Xr* to cairo_*.
* util/xr2cairo: Added utility script xr2cairo to help users fix
their source code.
2003-07-03 Carl Worth <cworth@isi.edu>
* src/xrmatrix.c (XrMatrixGetAffine): Added XrMatrixGetAffine
(from Soorya Kuloor)
* src/xr.c (XrGetAlpha): Added XrGetAlpha
(XrGetRGBColor): Added XrGetRGBColor
2003-06-12 Carl Worth <cworth@isi.edu>
* src/xrgstate.c (_XrGStateScale): Scale by 0 now causes an
InvalidMatrix error.
2003-05-28 Carl Worth <cworth@isi.edu>
* src/xrmatrix.c (XrMatrixMultiply): Eliminated
_XrMatrixMultiplyIntoRight and _XrMatrixMultiplyIntoLeft.
* src/xrgstate.c (_XrGStateClipAndCompositeTrapezoids): Fixed
missing translation of clip surface.
* src/Xr.h: Added XrSurfacePutImage
2003-05-16 Carl Worth <cworth@isi.edu>
* src/xrint.h: Added ppm filed (pixels per meter) to both
XrSurface and XrGState.
* src/xrgstate.c (_XrGStateSetTargetSurface): Fixup CTM according
to change in surface->ppm.
(_XrGStateDefaultMatrix): Default matrix is no longer an identity
matrix, but rather a matrix that provides some relates user space
units to real-world dimensions in a meaningful way, (default 3780
user space units per meter). This conversion is not exact, but is
rather as close as possible while also guaranteeing that one user
space unit maps to an integer number of device pixels.
2003-05-15 Carl Worth <cworth@isi.edu>
* src/xr.c (XrSetTargetDrawable): Moved implementation up from
_XrGStateSetTargetDrawable, (eg. all convenience functions should
be taken care of at the xr.c level ratehr than xrgstate.c)
* src/Xr.h: Added convenience function XrSetTargetImage
2003-05-14 Carl Worth <cworth@isi.edu>
* src/xrfont.c (_XrFontResolveXftFont): Fixed fonts to pull
pixelsize out of the transformation matrix. Fonts are now properly
hinted regardless of scaling.
* src/Xr.h: Three new functions for manipulating surfaces:
XrSurfaceSetMatrix, XrSurfaceGetMatrix, XrSurfaceSetFilter.
* src/Xr.h: Removed broken XrShowImage* functions. Changed
XrShowSurface to not require X/Y but instead depend on the CTM for
translation, (or the surface transformation matrix). I'd like to
get rid of width/height as well but it turns out an XrSurface is
not aware of its dimensions.
* src/Xr.h: Added convenience function for building rectangular
paths: XrRectangle.
* src/Xr.h: Added functions for performing transformations with
the CTM and its inverse: XrTransformPoint, XrTransformDistance,
XrInverseTransformPoint, XrInverseTransformDistance.
* src/Xr.h: XrConcatMatrix and XrSetMatrix now accept a pointer to
an XrMatrix rather than 6 doubles.
* src/Xr.h: Now exporting opaque XrMatrix object with several
functions: XrMatrixCreate, XrMatrixDestroy, XrMatrixCopy,
XrMatrixSetIdentity, XrMatrixSetAffine, XrMatrixTranslate,
XrMatrixScale, XrMatrixRotate, XrMatrixInvert, XrMatrixMultiply,
XrMatrixTransformDistance, XrMatrixTransformPoint.
2003-05-12 Carl Worth <cworth@isi.edu>
* src/Xr.h: Added XrSetPattern. See also XrSurfaceSetRepeat.
* src/xrpathbounds.c (_XrPathBounds): Moved path bound computation
to its own file.
* src/xrpathstroke.c (_XrPathStrokeToTraps): Moved path stroking
to its own file.
* src/xrpathfill.c (_XrPathFillToTraps): Moved path fililng to its
own file.
* src/xrgstate.c (_XrGStateStroke):
(_XrGStateFill):
(_XrGStateClipAndCompositeTrapezoids): Reorganized stroke and fill
code to go through the same path for clipping.
2003-05-02 Carl Worth <cworth@east.isi.edu>
* src/Xr.h: Changed XrFormatRGB32 to XrFormatRGB24
* src/xrsurface.c (_XrFormatBPP, XrSurfaceCreateForImage)
(_XrFormatDepth): Fixed for change of XrFormatRGB32 to
XrFormatRGB24
2003-05-01 Carl Worth <cworth@isi.edu>
* src/xrpath.c (_XrPathBounderInit):
(_XrPathBounderDeinit):
(_XrPathBounderAddPoint):
(_XrPathBounderAddEdge):
(_XrPathBounderAddSpline):
(_XrPathBounderDoneSubPath):
(_XrPathBounderDonePath):
(_XrPathBounds): New support for computing the bounding box of a
path. Currently used internally, (for computing the size of the
clip surface), and not exported publically.
* src/xrgstate.c (_XrGStateStroke): Implemented clip support for
strokes.
(_XrGStateClip): New _XrGStateClip function fills the current path
onto the gstate->clip surface.
* src/xr.c (XrClip): Added preliminary/experimental clip
functionality. The current implementation only clips stroked
elements, (not fills, images, or text). It's alway quite
inefficeient.
* src/xr.c (XrGetOperator):
(XrGetTolerance):
(XrGetLineWidth):
(XrGetLineCap):
(XrGetLineJoin):
(XrGetMiterLimit):
(XrGetCurrentPoint): Added several new query functions.
2003-04-26 Carl Worth <cworth@isi.edu>
* src/xrsurface.c (XrSurfaceDestroy): Fix memory leak of
surface->image_data.
2003-04-25 Carl Worth <cworth@east.isi.edu>
* configure.in: Fixed libtool versioning
2003-04-17 Carl Worth <cworth@isi.edu>
* Switched from imake to autotools.
* src/xrint.h: XrSurface structure is now greatly simplified,
(details now handled by XcSurface).
* src/Xr.h: Eliminated Display * parameter so Xr can be used for
non-X drawing.
Removed XrPushGroup/XrPopGroup.
Replaced XrSetDrawable/XrSetVisual with XrSetTargetDrawable.
Added XrSetTargetSurface and several new XrSurfaceCreate
functions.
Added XrShowSurface, (functionality overlaps with XrShowImage --
need to fix this)
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 ;-)
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