# Cppcheck report - LibreOffice: vcl/android/androidinst.cxx

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    /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
    /*
     * This file is part of the LibreOffice project.
     *
     * This Source Code Form is subject to the terms of the Mozilla Public
     * License, v. 2.0. If a copy of the MPL was not distributed with this
     * file, You can obtain one at http://mozilla.org/MPL/2.0/.
     */

    #include <jni.h>

    #include <android/log.h>
    #include <android/looper.h>
    #include <android/bitmap.h>

    #include <android/androidinst.hxx>
    #include <headless/svpdummies.hxx>
    #include <generic/gendata.hxx>
    #include <osl/detail/android-bootstrap.h>
    #include <rtl/strbuf.hxx>
    #include <basebmp/scanlineformats.hxx>
    #include <touch/touch.h>
    #include <vcl/settings.hxx>

    #define LOGTAG "LibreOffice/androidinst"
    #define LOGI(...) ((void)__android_log_print(ANDROID_LOG_INFO, LOGTAG, __VA_ARGS__))
    #define LOGW(...) ((void)__android_log_print(ANDROID_LOG_WARN, LOGTAG, __VA_ARGS__))
    #define LOGE(...) ((void)__android_log_print(ANDROID_LOG_ERROR, LOGTAG, __VA_ARGS__))

    static jclass appClass = 0;

    // Horrible hack
    static int viewWidth = 1, viewHeight = 1;

    class AndroidSalData : public SalGenericData
    {
    public:
        AndroidSalData( SalInstance *pInstance ) : SalGenericData( SAL_DATA_ANDROID, pInstance ) {}
        virtual void ErrorTrapPush() {}
        virtual bool ErrorTrapPop( bool ) { return false; }
    };

    static void BlitFrameRegionToWindow(ANativeWindow_Buffer *pOutBuffer,
                                        const basebmp::BitmapDeviceSharedPtr& aDev,
                                        const ARect &rSrcRect,
                                        int nDestX, int nDestY)
    {
        basebmp::RawMemorySharedArray aSrcData = aDev->getBuffer();
        basegfx::B2IVector aDevSize = aDev->getSize();
        sal_Int32 nStride = aDev->getScanlineStride();
        unsigned char *pSrc = aSrcData.get();

        // FIXME: do some cropping goodness on aSrcRect to ensure no overflows etc.
        ARect aSrcRect = rSrcRect;

        for (unsigned int y = 0; y < (unsigned int)(aSrcRect.bottom - aSrcRect.top); y++)
        {
            unsigned char *sp = ( pSrc + nStride * (aSrcRect.top + y) +
                                  aSrcRect.left * 4 /* src pixel size */ );

            switch (pOutBuffer->format) {
            case WINDOW_FORMAT_RGBA_8888:
            case WINDOW_FORMAT_RGBX_8888:
            {
                unsigned char *dp = ( (unsigned char *)pOutBuffer->bits +
                                      pOutBuffer->stride * 4 * (y + nDestY) +
                                      nDestX * 4 /* dest pixel size */ );
                for (unsigned int x = 0; x < (unsigned int)(aSrcRect.right - aSrcRect.left); x++)
                {
                    dp[x*4 + 0] = sp[x*4 + 0]; // R
                    dp[x*4 + 1] = sp[x*4 + 1]; // G
                    dp[x*4 + 2] = sp[x*4 + 2]; // B
                    dp[x*4 + 3] = 255; // A
                }
                break;
            }
            case WINDOW_FORMAT_RGB_565:
            {
                unsigned char *dp = ( (unsigned char *)pOutBuffer->bits +
                                      pOutBuffer->stride * 2 * (y + nDestY) +
                                      nDestX * 2 /* dest pixel size */ );
                for (unsigned int x = 0; x < (unsigned int)(aSrcRect.right - aSrcRect.left); x++)
                {
                    unsigned char b = sp[x*3 + 0]; // B
                    unsigned char g = sp[x*3 + 1]; // G
                    unsigned char r = sp[x*3 + 2]; // R
                    dp[x*2 + 0] = (r & 0xf8) | (g >> 5);
                    dp[x*2 + 1] = ((g & 0x1c) << 5) | ((b & 0xf8) >> 3);
                }
                break;
            }
            default:
                LOGI("unknown pixel format %d !", pOutBuffer->format);
                break;
            }
        }
    }

    void AndroidSalInstance::BlitFrameToWindow(ANativeWindow_Buffer *pOutBuffer,
                                               const basebmp::BitmapDeviceSharedPtr& aDev)
    {
        basegfx::B2IVector aDevSize = aDev->getSize();
        ARect aWhole = { 0, 0, aDevSize.getX(), aDevSize.getY() };
        BlitFrameRegionToWindow(pOutBuffer, aDev, aWhole, 0, 0);
    }

    void AndroidSalInstance::RedrawWindows(ANativeWindow_Buffer *pBuffer)
    {
        if (pBuffer->bits != NULL)
        {
            int i = 0;
            std::list< SalFrame* >::const_iterator it;
            for ( it = getFrames().begin(); it != getFrames().end(); i++, ++it )
            {
                SvpSalFrame *pFrame = static_cast<SvpSalFrame *>(*it);

                if (pFrame->IsVisible())
                {
                    BlitFrameToWindow (pBuffer, pFrame->getDevice());
                }
            }
        }
        else
            LOGI("no buffer for locked window");
    }

    void AndroidSalInstance::damaged(AndroidSalFrame */* frame */)
    {
        static bool beenHere = false;
        static jmethodID nCallbackDamaged = 0;

        // Check if we are running in an app that has registered for damage callbacks
        // static public void callbackDamaged();
        // Call the Java layer to post an invalidate if necessary

        if (appClass != 0 && !beenHere) {
            nCallbackDamaged = m_pJNIEnv->GetStaticMethodID(appClass, "callbackDamaged", "()V");
            if (nCallbackDamaged == 0)
                LOGE("Could not find the callbackDamaged method");
            beenHere = true;
        }

        if (appClass != 0 && nCallbackDamaged != 0)
            m_pJNIEnv->CallStaticVoidMethod(appClass, nCallbackDamaged);
    }

    void AndroidSalInstance::GetWorkArea( Rectangle& rRect )
    {
        rRect = Rectangle( Point( 0, 0 ),
                           Size( viewWidth, viewHeight ) );
    }

    /*
     * Try too hard to get a frame, in the absence of anything better to do
     */
    SalFrame *AndroidSalInstance::getFocusFrame() const
    {
        SalFrame *pFocus = SvpSalFrame::GetFocusFrame();
        if (!pFocus) {
            LOGI("no focus frame, re-focusing first visible frame");
            const std::list< SalFrame* >& rFrames( getFrames() );
            for( std::list< SalFrame* >::const_iterator it = rFrames.begin(); it != rFrames.end(); ++it )
            {
                SvpSalFrame *pFrame = const_cast<SvpSalFrame*>(static_cast<const SvpSalFrame*>(*it));
                if( pFrame->IsVisible() )
                {
                    pFrame->GetFocus();
                    pFocus = pFrame;
                    break;
                }
            }
        }
        return pFocus;
    }

    AndroidSalInstance *AndroidSalInstance::getInstance()
    {
        if (!ImplGetSVData())
            return NULL;
        AndroidSalData *pData = static_cast<AndroidSalData *>(ImplGetSVData()->mpSalData);
        if (!pData)
            return NULL;
        return static_cast<AndroidSalInstance *>(pData->m_pInstance);
    }

    AndroidSalInstance::AndroidSalInstance( SalYieldMutex *pMutex )
        : SvpSalInstance( pMutex )
    {
        int res = (lo_get_javavm())->AttachCurrentThread(&m_pJNIEnv, NULL);
        LOGI("AttachCurrentThread res=%d env=%p", res, m_pJNIEnv);
    }

    AndroidSalInstance::~AndroidSalInstance()
    {
        int res = (lo_get_javavm())->DetachCurrentThread();
        LOGI("DetachCurrentThread res=%d", res);
        LOGI("destroyed Android Sal Instance");
    }

    bool AndroidSalInstance::AnyInput( VclInputFlags nType )
    {
        if( nType & VclInputFlags::TIMER )
            return CheckTimeout( false );

        // Unfortunately there is no way to check for a specific type of
        // input being queued. That information is too hidden, sigh.
        return SvpSalInstance::s_pDefaultInstance->PostedEventsInQueue();
    }

    class AndroidSalSystem : public SvpSalSystem {
    public:
        AndroidSalSystem() : SvpSalSystem() {}
        virtual ~AndroidSalSystem() {}
        virtual int ShowNativeDialog( const OUString& rTitle,
                                      const OUString& rMessage,
                                      const std::list< OUString >& rButtons,
                                      int nDefButton );
    };

    SalSystem *AndroidSalInstance::CreateSalSystem()
    {
        return new AndroidSalSystem();
    }

    class AndroidSalFrame : public SvpSalFrame
    {
    public:
        AndroidSalFrame( AndroidSalInstance *pInstance,
                         SalFrame           *pParent,
                         sal_uLong           nSalFrameStyle,
                         SystemParentData   *pSysParent )
            : SvpSalFrame( pInstance, pParent, nSalFrameStyle,
                           true, basebmp::FORMAT_THIRTYTWO_BIT_TC_MASK_RGBA,
                           pSysParent )
        {
            enableDamageTracker();
            if (pParent == NULL && viewWidth > 1 && viewHeight > 1)
                SetPosSize(0, 0, viewWidth, viewHeight, SAL_FRAME_POSSIZE_WIDTH | SAL_FRAME_POSSIZE_HEIGHT);
        }

        virtual void GetWorkArea( Rectangle& rRect )
        {
            AndroidSalInstance::getInstance()->GetWorkArea( rRect );
        }

        virtual void damaged( const basegfx::B2IBox& rDamageRect)
        {
            if (rDamageRect.getWidth() <= 0 ||
                rDamageRect.getHeight() <= 0)
            {
                return;
            }
            AndroidSalInstance::getInstance()->damaged( this );
        }

        virtual void UpdateSettings( AllSettings &rSettings )
        {
            // Clobber the UI fonts
    #if 0
            psp::FastPrintFontInfo aInfo;
            aInfo.m_aFamilyName = "Roboto";
            aInfo.m_eItalic = ITALIC_NORMAL;
            aInfo.m_eWeight = WEIGHT_NORMAL;
            aInfo.m_eWidth = WIDTH_NORMAL;
            psp::PrintFontManager::get().matchFont( aInfo, rSettings.GetUILocale() );
    #endif

            // FIXME: is 14 point enough ?
            vcl::Font aFont( OUString( "Roboto" ), Size( 0, 14 ) );

            StyleSettings aStyleSet = rSettings.GetStyleSettings();
            aStyleSet.SetAppFont( aFont );
            aStyleSet.SetHelpFont( aFont );
            aStyleSet.SetMenuFont( aFont );
            aStyleSet.SetToolFont( aFont );
            aStyleSet.SetLabelFont( aFont );
            aStyleSet.SetInfoFont( aFont );
            aStyleSet.SetRadioCheckFont( aFont );
            aStyleSet.SetPushButtonFont( aFont );
            aStyleSet.SetFieldFont( aFont );
            aStyleSet.SetIconFont( aFont );
            aStyleSet.SetGroupFont( aFont );

            rSettings.SetStyleSettings( aStyleSet );
        }
    };

    SalFrame *AndroidSalInstance::CreateChildFrame( SystemParentData* pParent, sal_uLong nStyle )
    {
        return new AndroidSalFrame( this, NULL, nStyle, pParent );
    }

    SalFrame *AndroidSalInstance::CreateFrame( SalFrame* pParent, sal_uLong nStyle )
    {
        return new AndroidSalFrame( this, pParent, nStyle, NULL );
    }

    // All the interesting stuff is slaved from the AndroidSalInstance
    void InitSalData()   {}
    void DeInitSalData() {}
    void InitSalMain()   {}

    void SalAbort( const OUString& rErrorText, bool bDumpCore )
    {
        OUString aError( rErrorText );
        if( aError.isEmpty() )
            aError = "Unknown application error";
        LOGI("%s", OUStringToOString(rErrorText, osl_getThreadTextEncoding()).getStr() );

        LOGI("SalAbort: '%s'",
             OUStringToOString(aError, RTL_TEXTENCODING_ASCII_US).getStr());
        if( bDumpCore )
            abort();
        else
            _exit(1);
    }

    const OUString& SalGetDesktopEnvironment()
    {
        static OUString aEnv( "android" );
        return aEnv;
    }

    SalData::SalData() :
        m_pInstance( 0 ),
        m_pPlugin( 0 ),
        m_pPIManager(0 )
    {
    }

    SalData::~SalData()
    {
    }

    // This is our main entry point:
    SalInstance *CreateSalInstance()
    {
        LOGI("Android: CreateSalInstance!");
        AndroidSalInstance* pInstance = new AndroidSalInstance( new SalYieldMutex() );
        new AndroidSalData( pInstance );
        pInstance->AcquireYieldMutex(1);
        return pInstance;
    }

    void DestroySalInstance( SalInstance *pInst )
    {
        pInst->ReleaseYieldMutex();
        delete pInst;
    }

    #include <vcl/layout.hxx>

    int AndroidSalSystem::ShowNativeDialog( const OUString& rTitle,
                                            const OUString& rMessage,
                                            const std::list< OUString >& rButtons,
                                            int nDefButton )
    {
        (void)rButtons; (void)nDefButton;
        LOGI("LibreOffice native dialog '%s': '%s'",
             OUStringToOString(rTitle, RTL_TEXTENCODING_ASCII_US).getStr(),
             OUStringToOString(rMessage, RTL_TEXTENCODING_ASCII_US).getStr());
        LOGI("Dialog '%s': '%s'",
             OUStringToOString(rTitle, RTL_TEXTENCODING_ASCII_US).getStr(),
             OUStringToOString(rMessage, RTL_TEXTENCODING_ASCII_US).getStr());

        if (AndroidSalInstance::getInstance() != NULL)
        {
            // Does Android have a native dialog ? if not,. we have to do this ...

            // Of course it has. android.app.AlertDialog seems like a good
            // choice, it even has one, two or three buttons. Naturally,
            // it intended to be used from Java, so some verbose JNI
            // horror would be needed to use it directly here. Probably we
            // want some easier to use magic wrapper, hmm.

            MessageDialog aVclErrBox(NULL, rMessage);
            aVclErrBox.SetText(rTitle);
            aVclErrBox.Execute();
        }
        else
            LOGE("VCL not initialized");
        return 0;
    }

    // public static native void renderVCL(Bitmap bitmap);
    extern "C" SAL_JNI_EXPORT void JNICALL
    Java_org_libreoffice_android_AppSupport_renderVCL(JNIEnv *env,<--- The function 'Java_org_libreoffice_android_AppSupport_renderVCL' is never used.
                                                      jobject /* clazz */,
                                                      jobject bitmap)
    {
        AndroidBitmapInfo  info;
        void*              pixels;
        int                ret;

        if ((ret = AndroidBitmap_getInfo(env, bitmap, &info)) < 0) {
            LOGI("AndroidBitmap_getInfo() failed ! error=%d", ret);
            return;
        }

        if ((ret = AndroidBitmap_lockPixels(env, bitmap, &pixels)) < 0) {
            LOGI("AndroidBitmap_lockPixels() failed ! error=%d", ret);
        }

    /*
    typedef struct ANativeWindow_Buffer {
        // The number of pixels that are show horizontally.
        int32_t width;

        // The number of pixels that are shown vertically.
        int32_t height;

        // The number of *pixels* that a line in the buffer takes in
        // memory.  This may be >= width.
        int32_t stride;

        // The format of the buffer.  One of WINDOW_FORMAT_*
        int32_t format;

        // The actual bits.
        void* bits;

        // Do not touch.
        uint32_t reserved[6];
    } ANativeWindow_Buffer;
    */

        ANativeWindow_Buffer dummyOut; // look like a window for now ...
        dummyOut.width = info.width;
        dummyOut.height = info.height;
        dummyOut.stride = info.stride / 4; // sigh !
        dummyOut.format = info.format;
        dummyOut.bits = pixels;
        AndroidSalInstance::getInstance()->RedrawWindows (&dummyOut);

        AndroidBitmap_unlockPixels(env, bitmap);
    }

    // public static native void registerForDamageCallback(Class destinationClass);
    extern "C" SAL_JNI_EXPORT void JNICALL
    Java_org_libreoffice_android_AppSupport_registerForDamageCallback(JNIEnv * env,<--- The function 'Java_org_libreoffice_android_AppSupport_registerForDamageCallback' is never used.
                                                                      jobject /* clazz */,
                                                                      jclass destinationClass)
    {
        appClass = (jclass) env->NewGlobalRef(destinationClass);
    }

    // public static native void setViewSize(int width, int height);
    extern "C" SAL_JNI_EXPORT void JNICALL
    Java_org_libreoffice_android_AppSupport_setViewSize(JNIEnv * /* env */,<--- The function 'Java_org_libreoffice_android_AppSupport_setViewSize' is never used.
                                                        jobject /* clazz */,
                                                        jint width,
                                                        jint height)
    {
        // Horrible
        viewWidth = width;
        viewHeight = height;
    }

    // public static native void key(char c);
    extern "C" SAL_JNI_EXPORT void JNICALL
    Java_org_libreoffice_android_AppSupport_key(JNIEnv * /* env */,<--- The function 'Java_org_libreoffice_android_AppSupport_key' is never used.
                                                jobject /* clazz */,
                                                jchar c)
    {
        SalFrame *pFocus = AndroidSalInstance::getInstance()->getFocusFrame();
        if (pFocus) {
            KeyEvent aEvent(c, c, 0);
            Application::PostKeyEvent(VCLEVENT_WINDOW_KEYINPUT, pFocus->GetWindow(), &aEvent);
            Application::PostKeyEvent(VCLEVENT_WINDOW_KEYUP, pFocus->GetWindow(), &aEvent);
        }
        else
            LOGW("No focused frame to emit event on");
    }

    // public static native void touch(int action, int x, int y);
    extern "C" SAL_JNI_EXPORT void JNICALL
    Java_org_libreoffice_android_AppSupport_touch(JNIEnv * /* env */,<--- The function 'Java_org_libreoffice_android_AppSupport_touch' is never used.
                                                  jobject /* clazz */,
                                                  jint action,
                                                  jint x,
                                                  jint y)
    {
        SalFrame *pFocus = AndroidSalInstance::getInstance()->getFocusFrame();
        if (pFocus) {
            MouseEvent aEvent;
            sal_uLong nEvent;

            switch (action) {
            case AMOTION_EVENT_ACTION_DOWN:
                aEvent = MouseEvent(Point(x, y), 1, MouseEventModifiers::SIMPLECLICK, MOUSE_LEFT);
                nEvent = VCLEVENT_WINDOW_MOUSEBUTTONDOWN;
                break;
            case AMOTION_EVENT_ACTION_UP:
                aEvent = MouseEvent(Point(x, y), 1, MouseEventModifiers::SIMPLECLICK, MOUSE_LEFT);
                nEvent = VCLEVENT_WINDOW_MOUSEBUTTONUP;
                break;
            case AMOTION_EVENT_ACTION_MOVE:
                aEvent = MouseEvent(Point(x, y), 1, MouseEventModifiers::SIMPLEMOVE, MOUSE_LEFT);
                nEvent = VCLEVENT_WINDOW_MOUSEMOVE;
                break;
            default:
                LOGE("AppSupport.touch: Invalid action %d", action);
                return;
            }
            Application::PostMouseEvent(nEvent, pFocus->GetWindow(), &aEvent);
        }
        else
            LOGW("No focused frame to emit event on");
    }

    // public static native void zoom(float scale, int x, int y);
    extern "C" SAL_JNI_EXPORT void JNICALL
    Java_org_libreoffice_android_AppSupport_zoom(JNIEnv * /* env */,<--- The function 'Java_org_libreoffice_android_AppSupport_zoom' is never used.
                                                 jobject /* clazz */,
                                                 jfloat scale,
                                                 jint x,
                                                 jint y)
    {
        SalFrame *pFocus = AndroidSalInstance::getInstance()->getFocusFrame();
        if (pFocus) {
            SAL_INFO( "vcl.androidinst", "zoom: " << scale << "@(" << x << "," << y << ")" );
            ZoomEvent aEvent( Point( x, y ), scale);
            Application::PostZoomEvent(VCLEVENT_WINDOW_ZOOM, pFocus->GetWindow(), &aEvent);
        }
        else
            LOGW("No focused frame to emit event on");
    }

    // public static native void scroll(int x, int y);
    extern "C" SAL_JNI_EXPORT void JNICALL
    Java_org_libreoffice_android_AppSupport_scroll(JNIEnv * /* env */,<--- The function 'Java_org_libreoffice_android_AppSupport_scroll' is never used.
                                                   jobject /* clazz */,
                                                   jint x,
                                                   jint y)
    {
        SalFrame *pFocus = AndroidSalInstance::getInstance()->getFocusFrame();
        if (pFocus) {
            SAL_INFO( "vcl.androidinst", "scroll: " << "(" << x << "," << y << ")" );
            ScrollEvent aEvent( x, y );
            Application::PostScrollEvent(VCLEVENT_WINDOW_SCROLL, pFocus->GetWindow(), &aEvent);
        }
        else
            LOGW("No focused frame to emit event on");
    }

    extern "C" void
    touch_ui_show_keyboard()<--- The function 'touch_ui_show_keyboard' is never used.
    {
    }

    extern "C" void
    touch_ui_hide_keyboard()<--- The function 'touch_ui_hide_keyboard' is never used.
    {
    }

    extern "C" bool
    touch_ui_keyboard_visible()<--- The function 'touch_ui_keyboard_visible' is never used.
    {
        return true;
    }

    /* vim:set shiftwidth=4 softtabstop=4 expandtab: */