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Diffstat (limited to 'libXmu/src/DrawLogo.c')
| -rw-r--r-- | libXmu/src/DrawLogo.c | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/libXmu/src/DrawLogo.c b/libXmu/src/DrawLogo.c new file mode 100644 index 000000000..74e64d866 --- /dev/null +++ b/libXmu/src/DrawLogo.c @@ -0,0 +1,155 @@ +/* $Xorg: DrawLogo.c,v 1.4 2001/02/09 02:03:52 xorgcvs Exp $ */ + +/* + +Copyright 1988, 1998 The Open Group + +Permission to use, copy, modify, distribute, and sell this software and its +documentation for any purpose is hereby granted without fee, provided that +the above copyright notice appear in all copies and that both that +copyright notice and this permission notice appear in supporting +documentation. + +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 +OPEN GROUP 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 Open Group 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 Open Group. + +*/ +/* $XFree86: xc/lib/Xmu/DrawLogo.c,v 1.7 2001/01/17 19:42:54 dawes Exp $ */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#include <X11/Xlib.h> +#include <X11/Xmu/Drawing.h> + +/* + * Draw the "official" X Window System Logo, designed by Danny Chong + * + * Written by Ollie Jones, Apollo Computer + * + * Does some fancy stuff to make the logo look acceptable even + * if it is tiny. Also makes the various linear elements of + * the logo line up as well as possible considering rasterization. + */ +void +XmuDrawLogo(Display *dpy, Drawable drawable, GC gcFore, GC gcBack, + int x, int y, unsigned int width, unsigned int height) +{ + unsigned int size; + int thin, gap, d31; + XPoint poly[4]; + + XFillRectangle(dpy, drawable, gcBack, x, y, width, height); + + /* for now, do a centered even-sized square, at least for now */ + size = width; + if (height < width) + size = height; + size &= ~1; + x += (width - size) >> 1; + y += (height - size) >> 1; + +/* + * Draw what will be the thin strokes. + * + * ----- + * / / + * / / + * / / + * / / + * /____/ + * d + * + * Point d is 9/44 (~1/5) of the way across. + */ + + thin = (size / 11); + if (thin < 1) thin = 1; + gap = (thin+3) / 4; + d31 = thin + thin + gap; + poly[0].x = x + size; poly[0].y = y; + poly[1].x = x + size-d31; poly[1].y = y; + poly[2].x = x + 0; poly[2].y = y + size; + poly[3].x = x + d31; poly[3].y = y + size; + XFillPolygon(dpy, drawable, gcFore, poly, 4, Convex, CoordModeOrigin); + +/* + * Erase area not needed for lower thin stroke. + * + * ------ + * / / + * / __ / + * / / / + * / / / + * /__/__/ + */ + + poly[0].x = x + d31/2; poly[0].y = y + size; + poly[1].x = x + size / 2; poly[1].y = y + size/2; + poly[2].x = x + (size/2)+(d31-(d31/2)); poly[2].y = y + size/2; + poly[3].x = x + d31; poly[3].y = y + size; + XFillPolygon(dpy, drawable, gcBack, poly, 4, Convex, CoordModeOrigin); + +/* + * Erase area not needed for upper thin stroke. + * + * ------ + * / / / + * /--/ / + * / / + * / / + * /_____/ + */ + + poly[0].x = x + size - d31/2; poly[0].y = y; + poly[1].x = x + size / 2; poly[1].y = y + size/2; + poly[2].x = x + (size/2)-(d31-(d31/2)); poly[2].y = y + size/2; + poly[3].x = x + size - d31; poly[3].y = y; + XFillPolygon(dpy, drawable, gcBack, poly, 4, Convex, CoordModeOrigin); + +/* + * Draw thick stroke. + * Point b is 1/4 of the way across. + * + * b + * ----- + * \ \ + * \ \ + * \ \ + * \ \ + * \____\ + */ + + poly[0].x = x; poly[0].y = y; + poly[1].x = x + size/4; poly[1].y = y; + poly[2].x = x + size; poly[2].y = y + size; + poly[3].x = x + size - size/4; poly[3].y = y + size; + XFillPolygon(dpy, drawable, gcFore, poly, 4, Convex, CoordModeOrigin); + +/* + * Erase to create gap. + * + * / + * / + * / + * / + * / + */ + + poly[0].x = x + size- thin; poly[0].y = y; + poly[1].x = x + size-( thin+gap); poly[1].y = y; + poly[2].x = x + thin; poly[2].y = y + size; + poly[3].x = x + thin + gap; poly[3].y = y + size; + XFillPolygon(dpy, drawable, gcBack, poly, 4, Convex, CoordModeOrigin); +} |