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*Grid and guide snapping
*Grid and guide snapping


===Fill and stroke===
=== ===
*Color selector ([[RGB color space|RGB]], [[HLS color space|HSL]], [[CMYK color space|CMYK]], color wheel)
*Color selector ([[RGB color space|RGB]], [[HLS color space|HSL]], [[CMYK color space|CMYK]], color wheel)
*Fill opacity, stroke opacity, master opacity, gradient stop opacity
*Color picker ("dropper") tool
*[[image gradient|Gradient]]s: linear and elliptic, may have multiple stops; can be edited on canvas with draggable and mergeable handles
*Copy/paste style between objects
*Pattern fills made from any objects
*On-canvas gradient editing with draggable and mergeable handles
*[[Gaussian blur]]
*A gradient editor capable of multi-stop [[image gradient|gradient]]s
*Masks and clipping paths
*Pattern fills
*Masks
*Dashed strokes, with predefined dash patterns
*Dashed strokes, with predefined dash patterns
*Path markers (e.g. arrowheads)
*Path markers (e.g. arrowheads)
*/paste style between objects
*[[Gaussian blur]]


===Operations on paths===
===Operations on paths===

Revision as of 21:40, 8 February 2007

Inkscape
Developer(s)The Inkscape Team
Stable release
Repository
Operating systemCross-platform
TypeVector graphics editor
LicenseGNU General Public License
Websitehttp://www.inkscape.org/

Inkscape is an open source vector graphics editor. Its stated goal is to become a powerful graphic tool while being fully compliant with the XML, SVG and CSS standards. The primary development platform is Linux, but it is cross-platform and runs on Microsoft Windows, Mac OS X, and Unix-like operating systems.

Inkscape does not yet have as many features as the best proprietary vector editors, but it is currently suitable for a wide range of applications. In particular, it is widely used for creating images such as icons, flags, maps, diagrams, etc.

Inkscape's implementation of SVG and CSS standards is incomplete; most notably, it does not support SVG filter effects (except for Gaussian blur), animation, and SVG fonts. As of 2007, Inkscape is under active development, with new features being added regularly.

Features

Object creation

  • Drawing:
    • Pencil tool (freehand drawing with stroked paths)
    • Pen tool (creating paths with Bezier curves and straight lines)
    • Calligraphy tool (freehand drawing with calligraphic strokes, tablet pressure/angle support)
  • Shape tools:
    • Rectangles (optionally with rounded corners)
    • Ellipses (optionally circles, arcs, segments)
    • Stars/polygons (optionally rounded or randomized)
    • Spirals
  • Text tool (regular, multiline or flowed text)
  • Linked bitmap images, either imported or rasterized from selected objects (a separate utility for embedding linked images comes with the program)
  • Clones ("live" linked copies of objects). Other programs refer to similar functionality as "symbols".

Object manipulation

  • Affine transformations (moving, scaling, rotating, skewing), both interactively and by specifying numeric values
  • Z-order operations
  • Grouping objects, with a way to "select in group" without ungrouping, or "enter the group" making it a temporary layer
  • Layers, with a way to lock and/or hide individual layers, rearrange them, etc; layers can form a hierarchical tree
  • Copying and pasting objects
  • Alignment and distribution commands, including grid arrange, randomization, unclumping
  • A tool to create patterns of clones, using wallpaper symmetries plus arbitrary scales, shifts, rotates, and color changes, optionally randomized
  • Grid and guide snapping

Styling objects

  • Color selector (RGB, HSL, CMYK, color wheel), color palette, picker ("dropper") tool
  • Fill opacity, stroke opacity, master opacity, gradient stop opacity
  • Gradients: linear and elliptic, may have multiple stops; can be edited on canvas with draggable and mergeable handles
  • Pattern fills made from any objects
  • Gaussian blur
  • Masks and clipping paths
  • Dashed strokes, with predefined dash patterns
  • Path markers (e.g. arrowheads)
  • Ability to copy/paste style between objects

Operations on paths

  • Node editing: moving nodes and Bezier curve handles, node alignment and distribution, scaling and rotating node groups, "node sculpting" (proportional editing of multiple nodes)
  • Converting to path (for text objects or shapes), including converting stroke to path
  • Boolean operations (union, intersection, difference, exclusion, division)
  • Path simplification, with variable threshold
  • Path insetting and outsetting, including dynamic and linked offset objects
  • Clipping paths (non-destructive clipping)
  • Bitmap tracing (both color and b/w)

Text support

  • Multi-line text (SVG 1.0/1.1 <text>)
  • Flowed text in frame(s) (<flowRoot>, formerly proposed for SVG 1.2)
  • Full on-canvas editability, including styled text spans
  • Uses any outline fonts installed on the system
  • Can use any scripts and languages supported by the Pango library (e.g. Hebrew, Arabic, Thai, etc.)
  • Kerning, letterspacing, linespacing adjustments
  • Text on path (both text and path remain editable)

Rendering

  • 256x (25600%) maximum zoom
  • Fully anti-aliased display
  • Alpha transparency support for display and PNG export
  • Outline (wireframe) mode
  • Complete "as you drag" rendering of objects during interactive transformations

Miscellaneous

  • Connector tool for diagrams
  • Collaborative editing over a network (whiteboard)
  • Live watching and editing the document tree in the XML editor
  • PNG export
  • PostScript and PDF export (although export of fill patterns and grayscale does not yet work as of version 0.44)
  • Command line options for export, conversions, and analysis of SVG files
  • RDF metadata (authorship, date, license, etc.)
  • Extension support
  • User interface is translated in more than 40 languages

Interface and usability

One of the priorities of the Inkscape project is interface consistency and usability. This includes efforts to follow the GNOME Human Interface Guidelines compliance, universal keyboard accessibility, and convenient on-canvas editing. Inkscape has achieved significant progress in usability since the project started.

The number of floating dialog boxes has been reduced, with their functions available using keyboard shortcuts or in the docked toolbars in the editing window. The tool controls bar at the top of the window always displays the controls relevant to the current tool.

All transformations (not only moving but also scaling and rotating) have keyboard shortcuts with consistent modifiers (e.g. Alt transforms by 1 screen pixel at the current zoom, Shift multiplies the transformation by 10, etc.); these keys work on nodes in Node tool as well as on objects in Selector. The most common operations (such as transformations, zooming, z-order) have convenient one-key shortcuts.

Inkscape provides floating tooltips and status bar hints for all buttons, controls, commands, keys, and on-canvas handles. It comes with a complete keyboard and mouse reference (in HTML and SVG) and several interactive tutorials in SVG.

The interface of Sodipodi (Inkscape's predecessor) was partly based on those of CorelDRAW and GIMP. The current Inkscape interface has been partially influenced by that of Xara Xtreme.

History

Inkscape began in 2003 as a code fork of the Sodipodi project. Sodipodi, developed since 1999, was itself based on Gill, the work of Raph Levien.

The fork was led by a team of four former Sodipodi developers (Ted Gould, Bryce Harrington, Nathan Hurst, and MenTaLguY) who identified differences over project objectives, openness to third-party contributions, and technical disagreements as their reasons for forking. Inkscape, they claimed, would seek to focus development on implementing the complete SVG standard, whereas Sodipodi development had emphasized creating a general-purpose vector graphics editor, possibly at the expense of SVG.

Since the fork, Inkscape has, among other things, changed from using the C programming language to C++; changed to the GTK+ toolkit C++ bindings (gtkmm); redesigned the user interface and added a number of new features. Its implementation of the SVG standard has shown gradual improvement, but is still incomplete.

Rather than top-down governance, its developers claim to encourage an egalitarian culture where authority stems from an individual developer's abilities and active involvement in the project. As a result, the project places special emphasis on giving full access to its source code repository to all active developers, and on participation in the larger open source community (often in the form of inter-project initiatives and spinoff projects like the Open Clip Art Library).

While the project founders are still well-represented in the decision-making process, many newcomers have also come to play prominent roles. Among them is Bulia Byak, architect of the radical user interface changes that have given Inkscape its present appearance.

After Xara announced plans to open source their own drawing application Xara Xtreme, they expressed interest in working closely with Inkscape to find ways the two projects can share code, coordinate efforts, and make open source graphics superior to anything available in the proprietary world.

Versions

  • Version 0.45 (February 5, 2007) has support for Gaussian blur and many other minor modifications to existing features.
  • Version 0.44.1 was a bugfix release.
  • Version 0.44 (June 24, 2006) added a Layers dialog, support for clipping and masking, improved PDF export with transparency, and performance improvements.
  • Version 0.43 (November 19, 2005) added Connector tool, collaborative editing, tablet pressure/angle sensitivity, and Node tool enhancements.
  • Version 0.42 (July 26, 2005) added flowed text support, styling text spans, enhanced effects support, and the new gradient tool.
  • Version 0.41 (February 10, 2005) added the clone tiler tool and color tracing, plus many bugfixes.
  • Version 0.40 added support for layers, bitmap tracing, and text on path.
  • Version 0.39 was the first release to use the Pango library, bringing better support for more languages, as well as support for markers, clones, and pattern fills.
  • Version 0.38 was a bug fix release, but it also featured text kerning and letterspacing, multistage gradients, and many usability enhancements.
  • Version 0.37 saw the addition of boolean path operations and path inset/outset.
  • Version 0.36 was the first release with the reorganized UI using a menu bar and docked context-sensitive toolbars in the document window.
  • Version 0.35 was released on October 14, 2003 and was the first release of Inkscape, very similar to Sodipodi version 0.32.

See also

Artwork

Articles