diff options
author | Carl Worth <cworth@cworth.org> | 2008-02-20 08:02:45 -0800 |
---|---|---|
committer | Carl Worth <cworth@cworth.org> | 2008-02-20 08:02:45 -0800 |
commit | 5aacc54c430a982b51992d6fac186b955e478045 (patch) | |
tree | 829398984d8bf6827b8d0b26759ff8f0caf56f0e /NEWS | |
parent | f954db72dd33de837296ede353ad9823b0e32fcd (diff) |
NEWS: Add notes for cairo 1.5.10
Diffstat (limited to 'NEWS')
-rw-r--r-- | NEWS | 99 |
1 files changed, 94 insertions, 5 deletions
@@ -1,3 +1,92 @@ +Snapshot 1.5.10 (2009-02-20 Carl Worth <cworth@cworth.org>) +=========================================================== +This is the fifth snapshot in cairo's unstable 1.5 series. It comes 3 +weeks after the 1.5.8 snapshot. This snapshot adds one new API +function, (cairo_has_current_point), and the usual mix of +improvements, (more efficient PostScript/PDF output, optimized +stroking), and fixes (more robust error-handling, etc.). See below for +details. + +New API +------- +Add a new function to query if there is a current point: + + cairo_bool_t + cairo_has_current_point (cairo_t *cr); + +There is no current point immediately after cairo_create(), nor after +cairo_new_path() or cairo_new_sub_path(). There is a current point +after any of the path-creation functions, (cairo_move_to, +cairo_line_to, cairo_curve_to, etc.). + +Optimizations +------------- +Optimize stroking code to avoid repeated calculation of redundant +values, (particularly significant for very large, offscreen paths). + +General fixes +------------- +Patch a few more potential buffer overruns, (due to integer +overflow). + +Many fixes and improvements to cairo's error-handling, (ensure that +correct error values are returned, clean up memory leaks on +error-handling paths, etc.). + +Fix a potential infinite loop when stroking a spline with a pen that +has been transformed to a line segment. + +Remove treating NULL as a synonym for a valid cairo_font_options_t* +with default values, (a change that had been introduced as of cairo +1.5.8). + +Remove the altered handling of tolerance and fallback-resolution that +had been introduced as of cairo 1.5.4. + +cairo-xlib +---------- +Pass the original Drawable, (as opposed to the root window), to +XCreatePixmap when creating a similar surface. This gives the X server +more information so that it can be clever and efficient. + +cairo-pdf +--------- +Fix the rendering of repeating and reflecting patterns. + +Ensure miter limit is always >= 1, (smaller limits are not meaningful, +but they can cause some PDF viewers to fail to display pages). + +Generate more efficient output when the same path is used for both +fill and stroke. + +cairo-ps +-------- +Start sharing much of the cairo-pdf code rather than implementing very +similar code in cairo-ps. + +Implement native support for repeating and reflecting linear +gradients. + +Implement reflected surface patterns. + +Ensure miter limit is always >= 1, (smaller limits are not meaningful, +but they can cause some PostScript viewers to crash). + +Generate PostScript that will perform more efficiently and use less +memory on printers, (use currentfile instead of a giant string array +for image data, and avoid using PostScript patterns for paint() and +fill() when possible). + +cairo-svg +--------- +Avoid unnecessary rasterization when copying a "similar" surface to +another svg surface, (allow the SOURCE operator to be implemented with +all-vector operations if there are no underlying objects). + +cairo-atsui +----------- +Eliminate infinite loop when attempting to render an empty string. + Snapshot 1.5.8 (2008-01-30 Carl Worth <cworth@cworth.org>) ========================================================== This is the fourth snapshot in cairo's unstable 1.5 series. It comes 2 @@ -53,9 +142,9 @@ General bug fixes Fix various cairo_*_extents functions to initialize the return-value variables even in the case of a cairo_t in error. -Treat NULL as a legitimate value for cairo_font_options_t*. [XXX: On -discussion afterwards, we decided against this change so we plan to -remove this again before 1.6.0] +Treat NULL as a legitimate value for cairo_font_options_t*. [NOTE: +On discussion afterwards, we decided against this change so it has +been removed as of cairo 1.5.10.] Fix rendering with CAIRO_ANTIALIAS_NONE to be more predictable, (that is, to avoid seams appearing when geometry and imagery share an @@ -209,8 +298,8 @@ General improvements Use less memory for spline approximation calculations. Change how the tolerance value is interpreted with regard to -fallback-resolution. [XXX: Is this user-visible? If so, how? Will -follow up on the cairo mailing list for more details.] +fallback-resolution. [Note: On further discussion, we decided against +this change for now. It is removed as of cairo 1.5.10.] Fix precision of floating-point values in vector-output backends to avoid rounding errors with very small numbers. |