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authorReinhard Tartler <siretart@tauware.de>2011-10-10 17:43:39 +0200
committerReinhard Tartler <siretart@tauware.de>2011-10-10 17:43:39 +0200
commitf4092abdf94af6a99aff944d6264bc1284e8bdd4 (patch)
tree2ac1c9cc16ceb93edb2c4382c088dac5aeafdf0f /nx-X11/lib/Xmu/DrawLogo.c
parenta840692edc9c6d19cd7c057f68e39c7d95eb767d (diff)
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Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1
Summary: Imported nx-X11-3.1.0-1.tar.gz Keywords: Imported nx-X11-3.1.0-1.tar.gz into Git repository
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+/* $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);
+}