/*

 * Copyright (c) 2010, 2011, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

#include "X11SurfaceData.h"

#include <jni.h>

#include <math.h>

#include "Region.h"

#include "fontscalerdefs.h"

#include <X11/extensions/Xrender.h>

/* On Solaris 10 updates 8, 9, the render.h file defines these

 * protocol values but does not define the structs in Xrender.h.

 * Thus in order to get these always defined on Solaris 10

 * we will undefine the symbols if we have determined via the

 * makefiles that Xrender.h is lacking the structs. This will

 * trigger providing our own definitions as on earlier updates.

 * We could assume that *all* Solaris 10 update versions will lack the updated

 * Xrender.h and do this based solely on O/S being any 5.10 version, but this

 * could still change and we'd be broken again as we'd be re-defining them.

 */

#ifdef SOLARIS10_NO_XRENDER_STRUCTS

#undef X_RenderCreateLinearGradient

#undef X_RenderCreateRadialGradient

#endif

#ifndef X_RenderCreateLinearGradient

typedef struct _XLinearGradient {

    XPointFixed p1;

    XPointFixed p2;

} XLinearGradient;

#endif

#ifndef X_RenderCreateRadialGradient

typedef struct _XCircle {

    XFixed x;

    XFixed y;

    XFixed radius;

} XCircle;

typedef struct _XRadialGradient {

    XCircle inner;

    XCircle outer;

} XRadialGradient;

#endif

#ifdef __solaris__

/* Solaris 10 will not have these symbols at runtime */

#include <link.h>

typedef Picture (*XRenderCreateLinearGradientFuncType)

                                     (Display *dpy,

                                     const XLinearGradient *gradient,

                                     const XFixed *stops,

                                     const XRenderColor *colors,

                                     int nstops);

typedef Picture (*XRenderCreateRadialGradientFuncType)

                                     (Display *dpy,

                                     const XRadialGradient *gradient,

                                     const XFixed *stops,

                                     const XRenderColor *colors,

                                     int nstops);

static

XRenderCreateLinearGradientFuncType XRenderCreateLinearGradientFunc = NULL;

static

 XRenderCreateRadialGradientFuncType XRenderCreateRadialGradientFunc = NULL;

#endif

#define BUILD_TRANSFORM_MATRIX(TRANSFORM, M00, M01, M02, M10, M11, M12)                        \

    {                                                                                          \

      TRANSFORM.matrix[0][0] = M00;                                                            \

      TRANSFORM.matrix[0][1] = M01;                                                            \

      TRANSFORM.matrix[0][2] = M02;                                                            \

      TRANSFORM.matrix[1][0] = M10;                                                            \

      TRANSFORM.matrix[1][1] = M11;                                                            \

      TRANSFORM.matrix[1][2] = M12;                                                            \

      TRANSFORM.matrix[2][0] = 0;                                                              \

      TRANSFORM.matrix[2][1] = 0;                                                              \

      TRANSFORM.matrix[2][2] = 1<<16;                                                          \

    }

    void *xrenderlib;

    int major_opcode, first_event, first_error;

    if (!XQueryExtension(awt_display, "RENDER",

                         &major_opcode, &first_event, &first_error)) {

        return JNI_FALSE;

    }

#ifdef __solaris__

    xrenderlib = dlopen("libXrender.so",RTLD_GLOBAL|RTLD_LAZY);

    if (xrenderlib != NULL) {

        }

    }

#endif

}

/*

 * Class:     sun_awt_X11GraphicsEnvironment

 * Method:    initGLX

 * Signature: ()Z

 */

JNIEXPORT jboolean JNICALL

Java_sun_awt_X11GraphicsEnvironment_initXRender

{

#ifndef HEADLESS

    static jboolean xrenderAvailable = JNI_FALSE;

    static jboolean firstTime = JNI_TRUE;

    if (firstTime) {

        AWT_LOCK();

        AWT_UNLOCK();

        firstTime = JNI_FALSE;

    }

    return xrenderAvailable;

#else

    return JNI_FALSE;

#endif /* !HEADLESS */

}

JNIEXPORT void JNICALL

Java_sun_java2d_xr_XRBackendNative_initIDs(JNIEnv *env, jclass cls) {

    char *maskData;

    XImage* defaultImg;

    jfieldID maskImgID;

    jlong fmt8 =

        ptr_to_jlong(XRenderFindStandardFormat(awt_display, PictStandardA8));

    jlong fmt32 =

       ptr_to_jlong(XRenderFindStandardFormat(awt_display, PictStandardARGB32));

    jfieldID a8ID = (*env)->GetStaticFieldID(env, cls, "FMTPTR_A8", "J");

    jfieldID argb32ID = (*env)->GetStaticFieldID(env, cls, "FMTPTR_ARGB32", "J");

    (*env)->SetStaticLongField(env, cls, a8ID, fmt8);

    (*env)->SetStaticLongField(env, cls, argb32ID, fmt32);

    maskData = (char *) malloc(32*32);

    if (maskData == NULL) {

       return;

    }

    defaultImg = XCreateImage(awt_display, NULL, 8, ZPixmap, 0, maskData, 32, 32, 8, 0);

    defaultImg->data = maskData; //required?

    maskImgID = (*env)->GetStaticFieldID(env, cls, "MASK_XIMG", "J");

    (*env)->SetStaticLongField(env, cls, maskImgID, ptr_to_jlong(defaultImg));

}

JNIEXPORT void JNICALL

Java_sun_java2d_xr_XRBackendNative_freeGC

 (JNIEnv *env, jobject this, jlong gc) {

    XFreeGC(awt_display, (GC) jlong_to_ptr(gc));

}

JNIEXPORT jlong JNICALL

Java_sun_java2d_xr_XRBackendNative_createGC

 (JNIEnv *env, jobject this, jint drawable) {

  GC xgc = XCreateGC(awt_display, (Drawable) drawable, 0L, NULL);

  return ptr_to_jlong(xgc);

}

JNIEXPORT jint JNICALL

Java_sun_java2d_xr_XRBackendNative_createPixmap(JNIEnv *env, jobject this,

                                                jint drawable, jint depth,

                                                jint width, jint height) {

    return (jint) XCreatePixmap(awt_display, (Drawable) drawable,

                                width, height, depth);

}

JNIEXPORT jint JNICALL

Java_sun_java2d_xr_XRBackendNative_createPictureNative

 (JNIEnv *env, jclass cls, jint drawable, jlong formatPtr) {

  XRenderPictureAttributes pict_attr;

  return XRenderCreatePicture(awt_display, (Drawable) drawable,

                              (XRenderPictFormat *) jlong_to_ptr(formatPtr),

                               0, &pict_attr);

}

JNIEXPORT void JNICALL

Java_sun_java2d_xr_XRBackendNative_freePicture

 (JNIEnv *env, jobject this, jint picture) {

      XRenderFreePicture(awt_display, (Picture) picture);

}

JNIEXPORT void JNICALL

Java_sun_java2d_xr_XRBackendNative_freePixmap

 (JNIEnv *env, jobject this, jint pixmap) {

   XFreePixmap(awt_display, (Pixmap) pixmap);

}

JNIEXPORT void JNICALL

Java_sun_java2d_xr_XRBackendNative_setPictureRepeat

 (JNIEnv *env, jobject this, jint picture, jint repeat) {

    XRenderPictureAttributes pict_attr;

    pict_attr.repeat = repeat;

    XRenderChangePicture (awt_display, (Picture) picture, CPRepeat, &pict_attr);

}

JNIEXPORT void JNICALL

Java_sun_java2d_xr_XRBackendNative_setGCExposures

 (JNIEnv *env, jobject this, jlong gc, jboolean exposure) {

    XSetGraphicsExposures(awt_display,

                         (GC) jlong_to_ptr(gc), exposure ? True : False); //TODO: ????

}

JNIEXPORT void JNICALL

Java_sun_java2d_xr_XRBackendNative_setGCForeground

 (JNIEnv *env, jobject this, jlong gc, jint pixel) {

    XSetForeground(awt_display, (GC) jlong_to_ptr(gc), (unsigned long) pixel);

}

JNIEXPORT void JNICALL

Java_sun_java2d_xr_XRBackendNative_copyArea

 (JNIEnv *env, jobject this, jint src, jint dst, jlong gc,

  jint srcx, jint srcy, jint width, jint height, jint dstx, jint dsty) {

    XCopyArea(awt_display, (Drawable) src, (Drawable) dst,

             (GC) jlong_to_ptr(gc), srcx, srcy, width, height, dstx, dsty);

}

JNIEXPORT void JNICALL

Java_sun_java2d_xr_XRBackendNative_renderComposite

 (JNIEnv *env, jobject this, jbyte op, jint src, jint mask, jint dst,

  jint srcX, jint srcY, jint maskX, jint maskY,

  jint dstX, jint dstY, jint width, jint height) {

    XRenderComposite (awt_display, op,

                      (Picture)src, (Picture)mask, (Picture)dst,

                       srcX, srcY, maskX, maskY, dstX, dstY, width, height);

}

JNIEXPORT void JNICALL

Java_sun_java2d_xr_XRBackendNative_renderRectangle

 (JNIEnv *env, jobject this, jint dst, jbyte op,

  jshort red, jshort green, jshort blue, jshort alpha,

  jint x, jint y, jint width, jint height) {

    XRenderColor color;

    color.alpha = alpha;

    color.red = red;

    color.green = green;

    color.blue = blue;

    XRenderFillRectangle(awt_display, op, (Picture) dst, &color,

                         x, y, width, height);

}

JNIEXPORT void JNICALL

Java_sun_java2d_xr_XRBackendNative_XRenderRectanglesNative

 (JNIEnv *env, jclass xsd, jint dst, jbyte op,

  jshort red, jshort green, jshort blue, jshort alpha,

  jintArray rectArray, jint rectCnt) {

    int i;

    jint* rects;

    XRectangle *xRects;

    XRectangle sRects[256];

    XRenderColor color;

    color.alpha = alpha;

    color.red = red;

    color.green = green;

    color.blue = blue;

    if (rectCnt <= 256) {

        xRects = &sRects[0];

    } else {

        xRects = (XRectangle *) malloc(sizeof(XRectangle) * rectCnt);

        if (xRects == NULL) {

            return;

        }

    }

    if ((rects = (jint *)

         (*env)->GetPrimitiveArrayCritical(env, rectArray, NULL)) == NULL) {

        if (xRects != &sRects[0]) {

            free(xRects);

        }

        return;

    }

    for (i=0; i < rectCnt; i++) {

        xRects[i].x = rects[i*4 + 0];

        xRects[i].y = rects[i*4 + 1];

        xRects[i].width = rects[i*4 + 2];

        xRects[i].height = rects[i*4 + 3];

    }

    XRenderFillRectangles(awt_display, op,

                          (Picture) dst, &color, xRects, rectCnt);

    (*env)->ReleasePrimitiveArrayCritical(env, rectArray, rects, JNI_ABORT);

    if (xRects != &sRects[0]) {

        free(xRects);

    }

}

JNIEXPORT void JNICALL

Java_sun_java2d_xr_XRBackendNative_XRSetTransformNative

 (JNIEnv *env, jclass xsd, jint pic,

  jint m00, jint m01, jint m02, jint m10, jint m11, jint m12) {

  XTransform tr;

  BUILD_TRANSFORM_MATRIX(tr, m00, m01, m02, m10, m11, m12);

  XRenderSetPictureTransform (awt_display, (Picture) pic, &tr);

}

JNIEXPORT jint JNICALL

Java_sun_java2d_xr_XRBackendNative_XRCreateLinearGradientPaintNative

    (JNIEnv *env, jclass xsd, jfloatArray fractionsArray,

     jshortArray pixelsArray, jint x1, jint y1, jint x2, jint y2,

     jint numStops, jint repeat,

     jint m00, jint m01, jint m02, jint m10, jint m11, jint m12) {

   jint i;

   jshort* pixels;

   jfloat* fractions;

   XTransform tr;

   XRenderPictureAttributes pict_attr;

   Picture gradient = 0;

   XRenderColor *colors;

   XFixed *stops;

   XLinearGradient grad;

   if ((pixels = (jshort *)

        (*env)->GetPrimitiveArrayCritical(env, pixelsArray, NULL)) == NULL) {

       return -1;

   }

   if ((fractions = (jfloat *)

       (*env)->GetPrimitiveArrayCritical(env, fractionsArray, NULL)) == NULL) {

       (*env)->ReleasePrimitiveArrayCritical(env,

                                              pixelsArray, pixels, JNI_ABORT);

       return -1;

   }

    grad.p1.x = x1;

    grad.p1.y = y1;

    grad.p2.x = x2;

    grad.p2.y = y2;

    /*TODO optimized & malloc check*/

    colors = (XRenderColor *) malloc(numStops * sizeof(XRenderColor));

    stops =  (XFixed *) malloc(numStops * sizeof(XFixed));

    for (i=0; i < numStops; i++) {

      stops[i] = XDoubleToFixed(fractions[i]);

      colors[i].alpha = pixels[i*4 + 0];

      colors[i].red = pixels[i*4 + 1];

      colors[i].green = pixels[i*4 + 2];

      colors[i].blue = pixels[i*4 + 3];

    }

#ifdef __solaris__

    if (XRenderCreateLinearGradientFunc!=NULL) {

      gradient = (*XRenderCreateLinearGradientFunc)(awt_display, &grad, stops, colors, numStops);

    }

#else

    gradient = XRenderCreateLinearGradient(awt_display, &grad, stops, colors, numStops);

#endif

    free(colors);

    free(stops);

   (*env)->ReleasePrimitiveArrayCritical(env, pixelsArray, pixels, JNI_ABORT);

   (*env)->ReleasePrimitiveArrayCritical(env, fractionsArray, fractions, JNI_ABORT);

    if (gradient != 0) {

        BUILD_TRANSFORM_MATRIX(tr, m00, m01, m02, m10, m11, m12);

        XRenderSetPictureTransform (awt_display, gradient, &tr);

        pict_attr.repeat = repeat;

        XRenderChangePicture (awt_display, gradient, CPRepeat, &pict_attr);

    }

   return (jint) gradient;

}

JNIEXPORT jint JNICALL

Java_sun_java2d_xr_XRBackendNative_XRCreateRadialGradientPaintNative