.\" Copyright (c) 1991 X Consortium .\" .\" Permission is hereby granted, free of charge, to any person obtaining .\" a copy of this software and associated documentation files (the .\" "Software"), to deal in the Software without restriction, including .\" without limitation the rights to use, copy, modify, merge, publish, .\" distribute, sublicense, and/or sell copies of the Software, and to .\" permit persons to whom the Software is furnished to do so, subject to .\" the following conditions: .\" .\" The above copyright notice and this permission notice shall be included .\" in all copies or substantial portions of the Software. .\" .\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS .\" OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF .\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. .\" IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR .\" OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, .\" ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR .\" OTHER DEALINGS IN THE SOFTWARE. .\" .\" Except as contained in this notice, the name of the X Consortium shall .\" not be used in advertising or otherwise to promote the sale, use or .\" other dealings in this Software without prior written authorization .\" from the X Consortium. .\" .\" Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved. .\" .\" Permission is hereby granted, free of charge, to any person obtaining a .\" copy of this software and associated documentation files (the "Software"), .\" to deal in the Software without restriction, including without limitation .\" the rights to use, copy, modify, merge, publish, distribute, sublicense, .\" and/or sell copies of the Software, and to permit persons to whom the .\" Software is furnished to do so, subject to the following conditions: .\" .\" The above copyright notice and this permission notice (including the next .\" paragraph) shall be included in all copies or substantial portions of the .\" Software. .\" .\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR .\" IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, .\" FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL .\" THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER .\" LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING .\" FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER .\" DEALINGS IN THE SOFTWARE. .\" .TH XGC 1 __xorgversion__ .SH NAME xgc - X graphics demo .SH SYNOPSIS .ta 8n \fBxgc\fP [-\fItoolkitoption\fP ...] .SH DESCRIPTION The .I xgc program demonstrates various features of the X graphics primitives. In X, most of the details about the graphics to be generated are stored in a resource called a graphics context (GC). The .B xgc program provides a user interface for setting various GC components. Pressing the "Run" button causes these results to be displayed in the large drawing window on the right. Timing information is displayed in the window immediately below. .PP The items in the upper left hand window work as follows: .PP .I Function \- specify the logical function with which primitives will drawn. The most usual setting is "set", i.e. simply to render pixels without regard to what has been drawn before. .PP .I LineStyle \- specify whether lines should be drawn solid in foreground, dashed in foreground or alternating foreground and background. .PP .I CapStyle \- specify the appearance of the ends of a line. .PP .I JoinStyle \- specify the appearance of joints between consecutive lines drawn within a single graphics primitive. .PP .I FillStyle \- specify whether lines, text and fill requests are solid, tiled with a pixmap or stippled. .PP .I FillRule \- specifies the rule used to fill polygons. The EvenOdd rule means that if areas overlap an odd number of times, they are not drawn. Winding rule means that overlapping areas are always filled, regardless of how many times they overlap. .PP .I ArcMode \- specifies the rule for filling of arcs. The boundary of the arc is either a Chord or two radii. .PP .I planemask \- specifies which planes of the drawing window are modified. By default, all planes are modified. .PP .I dashlist \- specifies a pattern to be used when drawing dashed lines. .PP .I Line Width \- specifies the width in pixels of lines to be drawn. Zero means to draw using the server's fastest algorithm with a line width of one pixel. .PP .I Font \- specifies the font to be used for text primitives. .PP .I Foreground and .I Background \- specify the pixel values to be applied when drawing primitives. The Foreground value is used as the pixel value for set bits in the source in all primitives. The Background value is used as the pixel value for unset bits in the source when using Copy Plane, drawing lines with LineStyle of DoubleDash and filling with FillStyle of OpaqueStippled. .PP .I Percentage of Test \- scrollbar permits specifying only a percentage of the test to be run. The number at the left indicates the current setting, which defaults to 100%. .sp The window labeled "Test" permits choice of one a number of graphics primitive tests, including Points, Segments, Lines, Arcs and Filled Arcs, 8-bit Text and Image Text, Rectangles and Filled Rectangles, Image draws, as well as Copy Plane and Copy Area. .PP The window to the right of this has buttons which permit record/playback of the primitives rendered. .SH OPTIONS .I Xgc accepts all of the standard X Toolkit command line options. .SH X DEFAULTS This program accepts the usual defaults for toolkit applications. .SH ENVIRONMENT .PP .TP 8 .B DISPLAY to get the default host and display number. .TP 8 .B XENVIRONMENT to get the name of a resource file that overrides the global resources stored in the RESOURCE_MANAGER property. .SH "SEE ALSO" X(__miscmansuffix__) .SH BUGS This program isn't really finished yet, but it probably never will be, since it only demonstrates the original X11 core protocol rendering operations, which few modern programs use anymore. .SH AUTHORS Dan Schmidt, MIT