Import X server from vnc-3.3.7.

[rdpsrv] / Xserver / programs / Xserver / mi / mizerarc.h

diff --git a/Xserver/programs/Xserver/mi/mizerarc.h b/Xserver/programs/Xserver/mi/mizerarc.h
new file mode 100644 (file)
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+++ b/Xserver/programs/Xserver/mi/mizerarc.h
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+/************************************************************
+
+Copyright (c) 1989  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.
+
+********************************************************/
+
+/* $XConsortium: mizerarc.h,v 5.13 94/04/17 20:28:04 dpw Exp $ */
+
+typedef struct {
+    int x;
+    int y;
+    int mask;
+} miZeroArcPtRec;
+
+typedef struct {
+    int x, y, k1, k3, a, b, d, dx, dy;
+    int alpha, beta;
+    int xorg, yorg;
+    int xorgo, yorgo;
+    int w, h;
+    int initialMask;
+    miZeroArcPtRec start, altstart, end, altend;
+    int firstx, firsty;
+    int startAngle, endAngle;
+} miZeroArcRec;
+
+#define miCanZeroArc(arc) (((arc)->width == (arc)->height) || \
+                          (((arc)->width <= 800) && ((arc)->height <= 800)))
+
+#define MIARCSETUP() \
+    x = info.x; \
+    y = info.y; \
+    k1 = info.k1; \
+    k3 = info.k3; \
+    a = info.a; \
+    b = info.b; \
+    d = info.d; \
+    dx = info.dx; \
+    dy = info.dy
+
+#define MIARCOCTANTSHIFT(clause) \
+    if (a < 0) \
+    { \
+       if (y == info.h) \
+       { \
+           d = -1; \
+           a = b = k1 = 0; \
+       } \
+       else \
+       { \
+           dx = (k1 << 1) - k3; \
+           k1 = dx - k1; \
+           k3 = -k3; \
+           b = b + a - (k1 >> 1); \
+           d = b + ((-a) >> 1) - d + (k3 >> 3); \
+           if (dx < 0) \
+               a = -((-dx) >> 1) - a; \
+           else \
+               a = (dx >> 1) - a; \
+           dx = 0; \
+           dy = 1; \
+           clause \
+       } \
+    }
+
+#define MIARCSTEP(move1,move2) \
+    b -= k1; \
+    if (d < 0) \
+    { \
+       x += dx; \
+       y += dy; \
+       a += k1; \
+       d += b; \
+       move1 \
+    } \
+    else \
+    { \
+       x++; \
+       y++; \
+       a += k3; \
+       d -= a; \
+       move2 \
+    }
+
+#define MIARCCIRCLESTEP(clause) \
+    b -= k1; \
+    x++; \
+    if (d < 0) \
+    { \
+       a += k1; \
+       d += b; \
+    } \
+    else \
+    { \
+       y++; \
+       a += k3; \
+       d -= a; \
+       clause \
+    }
+
+/* mizerarc.c */
+
+extern Bool miZeroArcSetup(
+#if NeedFunctionPrototypes
+    xArc * /*arc*/,
+    miZeroArcRec * /*info*/,
+    Bool /*ok360*/
+#endif
+);
+
+extern DDXPointPtr miZeroArcPts(
+#if NeedFunctionPrototypes
+    xArc * /*arc*/,
+    DDXPointPtr /*pts*/
+#endif
+);
+