Files: Save

Italic text

Introduction

With native file dialogs, we cannot add features such as check boxes for options ("Choices"). We also cannot obtain information about which file filter is selected. We can only use the file extension to determin file type. This breaks are current method for using file dialogs to influence how files are saved. In particular:

• We cannot have a checkbox to "Save as 1.1 SVG".
• We cannot use the file filter setting to distinguish between saving as:

   * "Inkscape SVG", "Plain SVG" or "Optimized SVG" (.svg).
   * "Compressed Inkscape SVG" and "Compressed Plain SVG" (.svgz).
   * "DXF 12" or "DXF 14" (.dxf).
   * "Compressed Inkscape with media" or "JessyInk" (.zip).

Native file dialogs are simply useful for choosing file names, nothing more, nothing less.

It's important to recognize that the Gtk::FileDialog class is NOT derived from a widget thus we cannot not change the insides. This is a necessity born from using native dialogs.

Our current (Inkscape 1.4) situation spreads options for how SVG's are saved across several places. Choosing Inkscape or Plain SVG's is done in the File menu, selecting to save to SVG 2 or SVG 1.1 is done in the File dialog, selecting which SVG 2 features are converted to SVG 1.1 fallbacks is done in the Preferences dialog. It would be better to have all of this in one place.

The Export dialog has received a lot of love over the past few years. However, it currently can handle only a subset of the file types that Inkscape can export to.

See also 2018 proposal.

Current Behavior

Save

New document:

• Opens file dialog (drawing.svg, set to Inkscape SVG).

If opened as:

• SVG: Saves as Inkscape SVG. (If write-protected, opens file dialog.)
• PDF: Saves as PDF after popping open dialog. On quitting, warns about data loss.
• EPS: Saves as EPS after popping open dialog. On quitting, warns about data loss.
• EMF: Saves as EMF after popping open dialog. On quitting, warns about data loss.
• DXF: Saves as DXF 12 (even if opened as DXF 14). without popping open dialog. On quitting, warns about data loss.
• PNG: Opens PNG settings then fails silently
• JPG: Opens JPG settings then fails, opening Save dialog.

Save as

Opens file dialog. Preset to last saved file type (can be bitmap!). Can save to any vector format in file filter list.

• "Guess from extension" will fail if trying to save bitmap (may or may not be silently). (Will open PNG settings.)
• "Append filename extension automatically" fails.(Bug)

Save a copy

Same as "Save as" but doesn't update internal file data (e.g. file name).

Proposal

With GTK4 Inkscape, all "Export" is done through the Export dialog, where "Export" is defined as saving a document to any form other than Inkscape SVG.

The File menu will contain these options:

Save

Save a document to Inkscape SVG.

• If a document does not contain a stored filename, open up File dialog to choose a filename.
• Update internal Inkscape version and filename. Clear modified flag.
• Save.
• If save fails, revert internal Inkcape version and filename. Restore modified flag.

Save as...

Save a document as Inkscape SVG with a new different filename.

• Open up File dialog to choose a filename.
• Update internal Inkscape version and filename. Clear modified flag.
• Save.
• If save fails, revert internal Inkcape version and filename. Restore modified flag.

Save a copy...

Save a document as Inkscape SVG with a new different filename, not updating internals.

• Open up File dialog to choose a filename.
• Update internal Inkscape version and filename.
• Save.
• Revert internal Inkcape version and filename. Restore modified flag.

Save Template...

Save a document as an Inkscape template.

Export

File types from the 1.4.x Save dialog.

Export document to a non Inkscape SVG format.

• Open up Export dialog to choose export file type and options..

Options shown are based on selected file type.

The 1.4.x Export dialog currently handles: PNG, Inkscape SVG (no SVG specific options), Plain SVG, JPEG (with a big warning), TIFF, and WebP. The types the 1.4.x Save dialog handles are shown in the figure.

I'm wondering about which file types we should still support. For example, AutoCAD R12 is from 1992 and R14 is from 1997. Flash is long deprecated, with any kind of support ending in 2020.

Note: Bitmap formats are only available from the Export dialog.

Export Overwrite

New (needs some thought) Export document, overwriting.

• Export to same format as import or to the previously used export filetype.
• No File dialog used.

Unification

We have export from the command line and we have export from the Export dialog. These should be unified. It should be possible to set any values from the command line that you can set within the Export dialog. This can be done either of two ways:

1. Adapt the file export class used to track export options to handle more options.
2. Rely completely on setting preferences as is done by the Export dialog.

The first means that options are temporary, the second means options are stored in the Preferences file. The second method is probably easier.

Notes on File dialogs

We don't need to check on overwriting files ourselves. The file dialogs on all there platforms already have overwrite protection (verify for Windows).

MacOS

The MacOS dialog will add a file extension if it doesn't already exist based on the File type filter setting (if the filter setting is set to a single file type).

Questions

Directories

We keep track of the last directories for various file dialogues in preferences. A couple dialogs will fallback to the Windows' Document directory if a preference is not set. Is this desired behavior? Should it be that way on all platforms? Should it be that way for all file dialogs? If the Document directory does not exist, should we fallback to the Home directory? Glib makes it easy to find these directories (we don't need the complicated Windows code that is in get_start_directory() at the moment).

Supported Formats

From src/extension/internal:

File formats supported by Inkscape

File Extension	Format/Software	Type	Input	Output	Module*
AI	Adobe Illustrator	Vector	✔		pdf-input.cpp
CDR, CDT, CCX, CMX	CorelDraw	Vector	✔		cdr-input.cpp, libcdr
DHW	ACECAD DigiMemo	Vector	✔		dhw_input.py
DXF	AutoCAD	Vector	✔ (13, 14?)	✔ (12, 14)	dxf_input.py, dxf12_outlines.py, dxf_outlines.py
EMF	MS Enhanced Metafile	Vector	✔	✔	emf-inout.cpp, emf-print.cpp
EPS	Encapsulated PS	Vector	✔	✔	eps_input.py
FIG	XFig	Vector	✔		fig_input.py
FXG	Flash	Vector		✔	svg2fxg.py
GGR	Gimp Gradient	Other	✔		gimpgrad.cpp
GPL	Gimp Palette	Other	✔	✔	Swatch dialog
HPGL	HP Graphics Language	Vector	✔	✔	hpgl_input_sm.py, hpgl2_input.py, hpgl_output.py, (plotter.py)
HTML5	HTML Canvas	Other		✔	ink2canvas.py
JPEG	JPEG	Raster	✔	✔	libpixbuf, raster_output_jpg.py
SIF	Synfig Annimation	Vector		✔	sinfig_output.py, sinfig_prepare.py
TAR	SVG (Separate layers)	Vector		✔	tar_layers.py
TEX	Latex-PSTricks	Vector		✔	pdflatex.py?, latex-pstricks.cpp
TEX	Latex	Vector		✔?	latex-text-renderer.cpp
ODG	OpenDocument Drawing	Vector		✔	odf.cpp
PDF	Portable Document Format	Vector	✔ Internal, Cairo	✔ Cairo, Scribus	scribus_export_pdf.py, cairo-renderer-pdf-out.cpp, pdfinput/
PNG	PNG	Raster	✔	✔	libpixbuf, raster_output_png.py
POV	POV-Ray	Vector		✔	pov-out.cpp
PS	PostScript	Vector	✔	✔ Cairo	ps_input.py, cairo-ps-out.cpp
SVG	SVG	Vector	✔ (Inkscape, Adobe)	✔ (Inkscape, Plain, Optimized)	output_scour.py; svg.cpp, xml/repr-io.cpp, aisvg.inx, doc_ai_convert.py
SVGZ	SVG Compressed	Vector	✔	✔ (Inkscape, Plain)	svgz.cpp
TIFF	Tagged Image Format	Raster	✔	✔	libpixbuf, raster_output_tiff.py
VSDM, VSDX, VSD, VDX	MS Visio	Vector	✔		vsd-input.cpp
WEBP	WEBP (Google)	Raster	✔	✔	libpixbuf, raster_output_webp.py
WMF	MS Windows Metafile	Vector	✔	✔	wmf-inout.cpp, wmf-print.cpp
WPG	WordPerfect Graphics	Vector	✔		wpg-input.cpp
XAML	MS XAML	Vector	✔	✔	other/extension-xaml/inkxaml/
XCF	Gimp XCF w/ Layers	Vector		✔	gimp_xcf.py
ZIP	JessyInk PNG/PDF	Other		✔	jessyink_export.py
ZIP	SVG Compressed w/ Media	Other		✔	media_zip.py

^*Python files are mostly in share/extensions, C++ files are mostly in src/extensions/internal.

Input formats supported by GTK (via libpixbuf): ani, avif, bmp, gif, icns, ico, jpeg, jxl, png, pnm, qtif, svg, tga, tiff, wmf, xbm (SEI/gdkpixbut-input.cpp). (SVG and WMF are imported by our own vector code.)

There are also several export methods available under the Extensions menu.