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+/* $Xorg: ShapeWidg.c,v 1.4 2001/02/09 02:03:53 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/ShapeWidg.c,v 1.7 2001/01/17 19:42:56 dawes Exp $ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <X11/IntrinsicP.h>
+#include <X11/extensions/shape.h>
+#include "Converters.h"
+#include "Drawing.h"
+#include "Misc.h"
+
+/*
+ * Prototypes
+ */
+static void ShapeEllipseOrRoundedRectangle(Widget, Bool, int, int);
+static void ShapeError(Widget);
+static void ShapeOval(Widget);
+static void ShapeRectangle(Widget);
+
+/*
+ * Implementation
+ */
+Boolean
+XmuReshapeWidget(Widget w, int shape_style,
+ int corner_width, int corner_height)
+{
+ switch (shape_style)
+ {
+ case XmuShapeRectangle:
+ ShapeRectangle(w);
+ break;
+ case XmuShapeOval:
+ ShapeOval(w);
+ break;
+ case XmuShapeEllipse:
+ case XmuShapeRoundedRectangle:
+ ShapeEllipseOrRoundedRectangle(w, shape_style == XmuShapeEllipse,
+ corner_width, corner_height);
+ break;
+ default:
+ ShapeError(w);
+ return (False);
+ }
+ return (True);
+}
+
+static void
+ShapeError(Widget w)
+{
+ String params[1];
+ Cardinal num_params = 1;
+
+ params[0] = XtName(w);
+ XtAppWarningMsg(XtWidgetToApplicationContext(w),
+ "shapeUnknown", "xmuReshapeWidget", "XmuLibrary",
+ "Unsupported shape style for Command widget \"%s\"",
+ params, &num_params);
+}
+
+static void
+ShapeRectangle(Widget w)
+{
+ XShapeCombineMask(XtDisplay(w), XtWindow(w),
+ ShapeBounding, 0, 0, None, ShapeSet);
+ XShapeCombineMask(XtDisplay(w), XtWindow(w),
+ ShapeClip, 0, 0, None, ShapeSet);
+}
+
+/*
+ * Function:
+ * ShapeOval
+ *
+ * Parameters:
+ * w - widget to be reshaped
+ *
+ * Description:
+ * Reshapes a widget to a oval format.
+ *
+ * Notes:
+ * X11R6.3 behaviour changed. Now if the height is larger than the
+ * width, this function inverts the sense of the oval, instead of
+ * fallbacking to ellipse.
+ */
+static void
+ShapeOval(Widget w)
+{
+ Display *dpy = XtDisplay(w);
+ int width = w->core.width;
+ int height = w->core.height;
+ Pixmap p;
+ XGCValues values;
+ GC gc;
+ int rad;
+
+ if (width < 3 || height < 3)
+ return;
+ width += w->core.border_width << 1;
+ height += w->core.border_width << 1;
+
+ p = XCreatePixmap(dpy, XtWindow(w), width, height, 1);
+ values.foreground = 0;
+ values.background = 1;
+ values.cap_style = CapRound;
+ values.line_width = Min(width, height);
+ gc = XCreateGC(dpy, p,
+ GCForeground | GCBackground | GCLineWidth | GCCapStyle,
+ &values);
+ XFillRectangle(dpy, p, gc, 0, 0, width, height);
+ XSetForeground(dpy, gc, 1);
+
+ if (width < height)
+ {
+ rad = width >> 1;
+ XDrawLine(dpy, p, gc, rad, rad, rad, height - rad - 1);
+ }
+ else
+ {
+ rad = height >> 1;
+ XDrawLine(dpy, p, gc, rad, rad, width - rad - 1, rad);
+ }
+ XShapeCombineMask(dpy, XtWindow(w), ShapeBounding,
+ -(int)w->core.border_width, -(int)w->core.border_width,
+ p, ShapeSet);
+ if (w->core.border_width)
+ {
+ XSetForeground(dpy, gc, 0);
+ XFillRectangle(dpy, p, gc, 0, 0, width, height);
+ values.line_width = Min(w->core.width, w->core.height);
+ values.foreground = 1;
+ XChangeGC(dpy, gc, GCLineWidth | GCForeground, &values);
+ if (w->core.width < w->core.height)
+ {
+ rad = w->core.width >> 1;
+ XDrawLine(dpy, p, gc, rad, rad, rad, w->core.height - rad - 1);
+ }
+ else
+ {
+ rad = w->core.height >> 1;
+ XDrawLine(dpy, p, gc, rad, rad, w->core.width - rad - 1, rad);
+ }
+ XShapeCombineMask(dpy, XtWindow(w), ShapeClip, 0, 0, p, ShapeSet);
+ }
+ else
+ XShapeCombineMask(XtDisplay(w), XtWindow(w),
+ ShapeClip, 0, 0, None, ShapeSet);
+
+ XFreePixmap(dpy, p);
+ XFreeGC(dpy, gc);
+}
+
+/*
+ * Function:
+ * ShapeEllipseOrRoundedRectangle
+ *
+ * Parameters:
+ * w - widget to be reshaped
+ * ellipse - True if shape to ellise, rounded rectangle otherwise
+ * ew - horizontal radius of rounded rectangle
+ * eh - vertical radius of rouded rectangle
+ *
+ * Description:
+ * Based on the ellipse parameter, gives the widget a elliptical
+ * shape, or rounded rectangle shape.
+ *
+ * Notes:
+ * The GC is created with a line width of 2, what seens to draw the
+ * widget border correctly, if the width - height is not proportional.
+ */
+static void
+ShapeEllipseOrRoundedRectangle(Widget w, Bool ellipse, int ew, int eh)
+{
+ Display *dpy = XtDisplay(w);
+ unsigned width = w->core.width;
+ unsigned height = w->core.height;
+ Pixmap p;
+ XGCValues values;
+ GC gc;
+ unsigned long mask;
+
+ if (width < 3 || width < 3)
+ return;
+ width += w->core.border_width << 1;
+ height += w->core.border_width << 1;
+
+ mask = GCForeground | GCLineWidth;
+ p = XCreatePixmap(dpy, XtWindow(w), width, height, 1);
+
+ values.foreground = 0;
+ values.line_width = 2;
+
+ gc = XCreateGC(dpy, p, mask, &values);
+ XFillRectangle(dpy, p, gc, 0, 0, width, height);
+ XSetForeground(dpy, gc, 1);
+ if (!ellipse)
+ XmuFillRoundedRectangle(dpy, p, gc, 1, 1, width - 2, height - 2, ew, eh);
+ else
+ {
+ XDrawArc(dpy, p, gc, 1, 1, width - 2, height - 2, 0, 360 * 64);
+ XFillArc(dpy, p, gc, 2, 2, width - 4, height - 4, 0, 360 * 64);
+ }
+ XShapeCombineMask(dpy, XtWindow(w), ShapeBounding,
+ -(int)w->core.border_width, -(int)w->core.border_width,
+ p, ShapeSet);
+ if (w->core.border_width)
+ {
+ XSetForeground(dpy, gc, 0);
+ XFillRectangle(dpy, p, gc, 0, 0, width, height);
+ XSetForeground(dpy, gc, 1);
+ if (!ellipse)
+ XmuFillRoundedRectangle(dpy, p, gc, 1, 1,
+ w->core.width - 2, w->core.height - 2,
+ ew, eh);
+ else
+ XFillArc(dpy, p, gc, 0, 0, w->core.width, w->core.height,
+ 0, 360 * 64);
+ XShapeCombineMask(dpy, XtWindow(w), ShapeClip, 0, 0, p, ShapeSet);
+ }
+ else
+ XShapeCombineMask(XtDisplay(w), XtWindow(w),
+ ShapeClip, 0, 0, None, ShapeSet);
+
+ XFreePixmap(dpy, p);
+ XFreeGC(dpy, gc);
+}
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