native-prism-es2.windows.WinGLDrawable.c Maven / Gradle / Ivy

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This contains the native files for the backport of OpenJFX 8 to run on Java 7.
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/*
 * Copyright (c) 2012, 2013, 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 
#include 
#include 
#include 
#include 
#include 

#include "../PrismES2Defs.h"
#include "com_sun_prism_es2_WinGLDrawable.h"

extern void printAndReleaseResources(HWND hwnd, HGLRC hglrc,
        HDC hdc, LPCTSTR szAppName, char *message);
extern void initializeDrawableInfo(DrawableInfo *dInfo);

/*
 * Class:     com_sun_prism_es2_WinGLDrawable
 * Method:    nCreateDrawable
 * Signature: (JJ)J
 */
JNIEXPORT jlong JNICALL Java_com_sun_prism_es2_WinGLDrawable_nCreateDrawable
(JNIEnv *env, jclass class, jlong nativeWindow, jlong nativePFInfo) {
    HDC hdc;
    DrawableInfo *dInfo = NULL;
    HWND hwnd = (HWND) jlong_to_ptr(nativeWindow);
    PixelFormatInfo *pfInfo = (PixelFormatInfo *) jlong_to_ptr(nativePFInfo);
    if (pfInfo == NULL) {
        return 0;
    }

    if (!hwnd) {
        fprintf(stderr, "nCreateHdc: Invalid hwnd");
        return 0;
    }
    // TODO: Need to get the screen info in pfInfo to handle multi-monitor case. (RT-27445)
    hdc = GetDC(hwnd);

    if (!SetPixelFormat(hdc, pfInfo->pixelFormat, NULL)) {
        printAndReleaseResources(NULL, NULL, hdc, NULL,
                "nCreateHdc: Failed in SetPixelFormat");
        return 0;
    }

    /* allocate the structure */
    dInfo = (DrawableInfo *) malloc(sizeof (DrawableInfo));
    if (dInfo == NULL) {
        fprintf(stderr, "nCreateDrawable: Failed in malloc\n");
        return 0;
    }

    /* initialize the structure */
    initializeDrawableInfo(dInfo);

    dInfo->hdc = hdc;
    dInfo->hwnd = hwnd;
    dInfo->onScreen = JNI_TRUE;

    return ptr_to_jlong(dInfo);
}
/*
 * Class:     com_sun_prism_es2_WinGLDrawable
 * Method:    nGetDummyDrawable
 * Signature: (J)J
 */
JNIEXPORT jlong JNICALL Java_com_sun_prism_es2_WinGLDrawable_nGetDummyDrawable
(JNIEnv *env, jclass class, jlong nativePFInfo) {
    DrawableInfo *dInfo = NULL;
    PixelFormatInfo *pfInfo = (PixelFormatInfo *) jlong_to_ptr(nativePFInfo);
    if (pfInfo == NULL) {
        return 0;
    }

    /* allocate the structure */
    dInfo = (DrawableInfo *) malloc(sizeof (DrawableInfo));
    if (dInfo == NULL) {
        fprintf(stderr, "nGetDummyDrawable: Failed in malloc\n");
        return 0;
    }

    /* initialize the structure */
    initializeDrawableInfo(dInfo);

    // Use the dummyHdc that was already created in the pfInfo
    // since this is an non-onscreen drawable.
    dInfo->hdc = pfInfo->dummyHdc;
    dInfo->hwnd = pfInfo->dummyHwnd;
    dInfo->onScreen = JNI_FALSE;

    return ptr_to_jlong(dInfo);
}

/*
 * Class:     com_sun_prism_es2_WinGLDrawable
 * Method:    nSwapBuffers
 * Signature: (J)Z
 */
JNIEXPORT jboolean JNICALL Java_com_sun_prism_es2_WinGLDrawable_nSwapBuffers
(JNIEnv *env, jclass class, jlong nativeDInfo) {
    DrawableInfo *dInfo = (DrawableInfo *) jlong_to_ptr(nativeDInfo);
    if (dInfo == NULL) {
        return JNI_FALSE;
    }
    return SwapBuffers(dInfo->hdc);
}