1 /*
2  * Copyright (c) 2000, 2001, Oracle and/or its affiliates. All rights reserved.
3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
5  * This code is free software; you can redistribute it and/or modify it
6  * under the terms of the GNU General Public License version 2 only, as
7  * published by the Free Software Foundation.  Oracle designates this
8  * particular file as subject to the "Classpath" exception as provided
9  * by Oracle in the LICENSE file that accompanied this code.
10  *
11  * This code is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14  * version 2 for more details (a copy is included in the LICENSE file that
15  * accompanied this code).
16  *
17  * You should have received a copy of the GNU General Public License version
18  * 2 along with this work; if not, write to the Free Software Foundation,
19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20  *
21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22  * or visit www.oracle.com if you need additional information or have any
23  * questions.
24  */
25 
26 #include "GraphicsPrimitiveMgr.h"
27 #include "LineUtils.h"
28 
29 #include "sun_java2d_loops_DrawRect.h"
30 
31 /*
32  * Class:     sun_java2d_loops_DrawRect
33  * Method:    DrawRect
34  * Signature: (Lsun/java2d/SunGraphics2D;Lsun/java2d/SurfaceData;IIII)V
35  */
36 JNIEXPORT void JNICALL
Java_sun_java2d_loops_DrawRect_DrawRect(JNIEnv * env,jobject self,jobject sg2d,jobject sData,jint x,jint y,jint w,jint h)37 Java_sun_java2d_loops_DrawRect_DrawRect
38     (JNIEnv *env, jobject self,
39      jobject sg2d, jobject sData,
40      jint x, jint y, jint w, jint h)
41 {
42     SurfaceDataOps *sdOps;
43     SurfaceDataRasInfo rasInfo;
44     NativePrimitive *pPrim;
45     CompositeInfo compInfo;
46     jint lox, loy, hix, hiy;
47     jint pixel = GrPrim_Sg2dGetPixel(env, sg2d);
48 
49     if (w < 0 || h < 0) {
50         return;
51     }
52 
53     pPrim = GetNativePrim(env, self);
54     if (pPrim == NULL) {
55         return;
56     }
57     if (pPrim->pCompType->getCompInfo != NULL) {
58         GrPrim_Sg2dGetCompInfo(env, sg2d, pPrim, &compInfo);
59     }
60 
61     sdOps = SurfaceData_GetOps(env, sData);
62     if (sdOps == 0) {
63         return;
64     }
65 
66     lox = x;
67     loy = y;
68     hix = x + w + 1;
69     hiy = y + h + 1;
70     if (hix < lox) {
71         hix = 0x7fffffff;
72     }
73     if (hiy < loy) {
74         hiy = 0x7fffffff;
75     }
76 
77     GrPrim_Sg2dGetClip(env, sg2d, &rasInfo.bounds);
78     if (rasInfo.bounds.x1 < lox) rasInfo.bounds.x1 = lox;
79     if (rasInfo.bounds.y1 < loy) rasInfo.bounds.y1 = loy;
80     if (rasInfo.bounds.x2 > hix) rasInfo.bounds.x2 = hix;
81     if (rasInfo.bounds.y2 > hiy) rasInfo.bounds.y2 = hiy;
82     if (sdOps->Lock(env, sdOps, &rasInfo, pPrim->dstflags) != SD_SUCCESS) {
83         return;
84     }
85 
86     if (rasInfo.bounds.x2 > rasInfo.bounds.x1 &&
87         rasInfo.bounds.y2 > rasInfo.bounds.y1)
88     {
89         sdOps->GetRasInfo(env, sdOps, &rasInfo);
90         if (rasInfo.rasBase) {
91             DrawLineFunc *pLine = pPrim->funcs.drawline;
92             int loyin = (loy == rasInfo.bounds.y1);
93             int hiyin = (hiy == rasInfo.bounds.y2);
94             int xsize = (rasInfo.bounds.x2 - rasInfo.bounds.x1);
95             int ysize = (rasInfo.bounds.y2 - rasInfo.bounds.y1 - loyin - hiyin);
96             /*
97              * To avoid drawing the corners twice (both for performance
98              * and because XOR erases them otherwise) and to maximize the
99              * number of pixels we draw in the horizontal portions
100              * which are more cache-friendly, we include the corner
101              * pixels only in the top and bottom segments.
102              * We also protect against degenerate rectangles where we
103              * would draw the same line for top & bottom or left & right.
104              */
105             if (loyin) {
106                 /* Line across the top */
107                 (*pLine)(&rasInfo,
108                          rasInfo.bounds.x1, rasInfo.bounds.y1,
109                          pixel, xsize, 0,
110                          BUMP_POS_PIXEL, 0, BUMP_NOOP, 0, pPrim, &compInfo);
111             }
112             if (lox == rasInfo.bounds.x1 && ysize > 0) {
113                 /* Line down the left side */
114                 (*pLine)(&rasInfo,
115                          rasInfo.bounds.x1, rasInfo.bounds.y1 + loyin,
116                          pixel, ysize, 0,
117                          BUMP_POS_SCAN, 0, BUMP_NOOP, 0, pPrim, &compInfo);
118             }
119             if (hix == rasInfo.bounds.x2 && ysize > 0 && lox != hix - 1) {
120                 /* Line down the right side */
121                 (*pLine)(&rasInfo,
122                          rasInfo.bounds.x2 - 1, rasInfo.bounds.y1 + loyin,
123                          pixel, ysize, 0,
124                          BUMP_POS_SCAN, 0, BUMP_NOOP, 0, pPrim, &compInfo);
125             }
126             if (hiyin && loy != hiy - 1) {
127                 /* Line across the bottom */
128                 (*pLine)(&rasInfo,
129                          rasInfo.bounds.x1, rasInfo.bounds.y2 - 1,
130                          pixel, xsize, 0,
131                          BUMP_POS_PIXEL, 0, BUMP_NOOP, 0, pPrim, &compInfo);
132             }
133         }
134         SurfaceData_InvokeRelease(env, sdOps, &rasInfo);
135     }
136     SurfaceData_InvokeUnlock(env, sdOps, &rasInfo);
137 }
138