resolves bug 1348417 and implements addition features for bug 1302857

Fixed some unused variables warnings.

EMF/WMF support: Various changes (see bug #1263242 c35 for details) EMF support: - linear gradients: improve numeric stability on round-trip editing - linear gradients: fix scaling issue libTERE/text_reassemble update: - improve handling of whitespace created with large x kerns - fix handling of absolute RTL-positioning of LTR text in EMF files WMF support: - fix support for 'textout' records and Placeable headers - add support for CREATEPATTERNBRUSH - fix offset on load if opened via GUI (bug #1250250)

libUEMF update; EMF linear gradient bug fixes (bug #1263242)

Unduplicate some code in the metafile printing extensions

Move libuemf to a separate directory. Rename libunicode-convert to symbol_convert and put it in libuemf.

changes_2013_05_22a.patch: 1. Resolves issue of bug #988601 message 170 (Support of 'Unset' styles in EMF export). 2. Implements CSS 3 (and CSS 2) text-decoration support. Note that it does not yet provide any method of adding these features - at present it just shows whatever is in the SVG. This new code is also used to display EMF/WMF strike-through and underline text decorations when these files are read in. Those decorations may also be written out to EMF/WMF. Other text decoration features, like overline, or dotted lines, are dropped. For SVG text-decoration -line, -style, -color are all implemented. CSS3 provides two ways to represent the same state, this code uses the compound text-decoration method rather than the 3 fields method. Also it leaves out keywords that are not needed and would break backwards compatibility. For instance: text-decoration: underline solid is valid, but would break CSS2. Solid is the default, so that sort of case is written as: text-decoration: underline If the state is CSS3 specific all of the needed fields are of course include, like text-decoration: underline wavy red 3. It incorporates the fix for bug 1181326 (Text edit mishandles span of just colored spaces) 4. It incorporates further changes to text editing so that style can be changed on spans consisting of only spaces when text decorations are present in the span. 5. It incorporates code to disable text decorations when text so marked is mapped onto a path. 6. Fixed more bugs in Hebrew language support than I can remember. Hebrew language export/import to EMF now works quite well. (See the examples in libTERE v 0.7.) WMF does not support unicode and for all intents and purposes Inkscape has no way to read or write Hebrew to it. Some of more important things that now work that didn't (or didn't always): Hebrew diacritical marks, R/L/center justification, and bidirectional text. The Hebrew fonts "Ezra SIL" and "EZRA SIL SR" should be installed before viewing the libTERE examples, otherwise font substitutions will cause some text shifts. 7. Implemented font failover in Text Reassemble, which makes the process more robust. (Again, see the examples in libTERE. )

changes_2013_03_18c.patch This set of patches does the following: 1. Fixed a typo ( where "+ sizeof()" should have been "* sizeof()") which caused a memory problem for EMF/WMF files with very large numbers of hatches. 2. Added support for background mode, background color, and textcolor in hatches. EMF/WMF files change these parameters but the change may be silent until many records later. This has the odd effect that a stroke or fill may be defined (in SVG) and then it is ignored later and replaced with one with a different background color. 3. Fixed WMF output so that it wasn't adding +1 to the number of pixels for Width and Height. (Allows WMF files to go through several cycles of save as, open without changing sizes.) 4. Cleaned up indenting of [ew]mf-{print|inout}.* files, to make them compliant with the inkscape standard. All indents are (I hope) now 4*i deep. 5. Added underline/strikeout support for text read from EMF/WMF files. Inkscape itself cannot currently render this, but it makes it into the SVG, and it shows up correctly when that SVG is read by Opera. 6. Took out all the "throw" calls, replacing them with g_error(). If this comes up again in debugging a define can be used to remap the g_error to temporarily reintroduce the throw so that gdb can catch them. 7. Took out the "%6lf" format changes from patch 11724, retained the "127" length limit in the same sscanf. 8. Put the C type casts back in, reversing those changes from patch 11724. This is a style issue, and I could not find clear guidance for which way to go. (Nor a good rationale for keeping the lengthier C++ syntax.) So I reviewed a large swath of other inkscape code to see if there was a trend and found a very large number of other sections that were using C style casts instead of the more verbose C++ forms. So I kept it the way it has been. 9. The locale changes from 11724 were of course retained.

changes_2013_02_25a.patch New: WMF import/export implements WMF (Windows Metafile) read and write. Inkscape previously supported that through uniconverter, which was not very good with WMF files. The new version now has a complete wmf-print/wmf-inout implementation, analogous to the previous emf-print/emf-inout. This handles images, patterns, and various other goodies to the extent that WMF does. WMF is a bit primitive, many fields are only 16 bits, so it even more resolution sapping issues than does EMF. Given the choice, always use the latter format.

Fixes bug #988601: omnibus patch for EMF input/output support (cross-platform)