src/java.desktop/windows/native/libawt/windows/awt_Taskbar.cpp

/*
 * Copyright (c) 2016, 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 "jni_util.h"
#include "awt.h"
#include <jni.h>
#include "awt_Taskbar.h"
#include "awt_Window.h"


#ifdef __cplusplus
extern "C" {
#endif

/*
 * Class:     sun_awt_windows_WTaskbarPeer
 * Method:    nativeInit
 * Signature: ()Z
 */
JNIEXPORT jboolean JNICALL Java_sun_awt_windows_WTaskbarPeer_nativeInit
  (JNIEnv *env, jclass)
{
    if (SUCCEEDED(::CoCreateInstance(CLSID_TaskbarList, NULL,
            CLSCTX_INPROC_SERVER, IID_ITaskbarList, (LPVOID *)&m_Taskbar))) {
        return JNI_TRUE;
    } else {
        return JNI_FALSE;
    }
}

/*
 * Class:     sun_awt_windows_WTaskbarPeer
 * Method:    setProgressValue
 * Signature: (JI)V
 */
JNIEXPORT void JNICALL Java_sun_awt_windows_WTaskbarPeer_setProgressValue
  (JNIEnv *, jobject, jlong window, jint value)
{
    if (value < 0 || value > 100) {
        m_Taskbar->SetProgressState((HWND)window, TBPF_NOPROGRESS);
    } else {
        m_Taskbar->SetProgressValue((HWND)window, value, 100);
    }
}



/*
 * Class:     sun_awt_windows_WTaskbarPeer
 * Method:    setProgressState
 * Signature: (JI)V
 */
JNIEXPORT void JNICALL Java_sun_awt_windows_WTaskbarPeer_setProgressState
  (JNIEnv *env, jobject, jlong window, jobject state)
{
    TBPFLAG flag = TBPF_NOPROGRESS;

    static jmethodID nameMID = NULL;
    if (!nameMID) {
        jclass stateCls = env->FindClass("java/awt/Taskbar$State");
        CHECK_NULL(stateCls);
        nameMID = env->GetMethodID(stateCls, "name", "()Ljava/lang/String;");
        CHECK_NULL(nameMID);
    }
    jstring value = (jstring) env->CallObjectMethod(state, nameMID);
    CHECK_NULL(value);
    const char* valueNative = env->GetStringUTFChars(value, 0);
    if (valueNative) {
        if (strcmp(valueNative, "OFF") == 0) {
            flag = TBPF_NOPROGRESS;
        } else if (strcmp(valueNative, "NORMAL") == 0) {
            flag = TBPF_NORMAL;

            // Switching from TBPF_INDETERMINATE to TBPF_NORMAL has no effect
            m_Taskbar->SetProgressState((HWND)window, TBPF_PAUSED);
        } else if (strcmp(valueNative, "PAUSED") == 0) {
            flag = TBPF_PAUSED;
        } else if (strcmp(valueNative, "INDETERMINATE") == 0) {
            flag = TBPF_INDETERMINATE;
        } else if (strcmp(valueNative, "ERROR") == 0) {
            flag = TBPF_ERROR;
        }
        env->ReleaseStringUTFChars(value, valueNative);
        m_Taskbar->SetProgressState((HWND)window, flag);
    }
}

/*
 * Class:     sun_awt_windows_WTaskbarPeer
 * Method:    flashWindow
 * Signature: (JZ)V
 */
JNIEXPORT void JNICALL Java_sun_awt_windows_WTaskbarPeer_flashWindow
  (JNIEnv *, jobject, jlong window)
{
    ::FlashWindow((HWND) window, TRUE);
}

/*
 * Class:     sun_awt_windows_WTaskbarPeer
 * Method:    setOverlayIcon
 * Signature: (J[III)V
 */
JNIEXPORT void JNICALL Java_sun_awt_windows_WTaskbarPeer_setOverlayIcon
  (JNIEnv *env, jobject, jlong window, jintArray buf, jint w, jint h)
{
    HICON icon = CreateIconFromRaster(env, buf, w, h);
    m_Taskbar->SetOverlayIcon((HWND)window, icon, NULL);
    ::DestroyIcon(icon);
}
#ifdef __cplusplus
}
#endif