C++ ANPPaintInterfaceV0类代码示例

PaintPlugin::~PaintPlugin() {
    gPathI.deletePath(m_touchPath);
    gPaintI.deletePaint(m_paintSurface);
    gPaintI.deletePaint(m_paintButton);

    setContext(NULL);
    destroySurface();
}

AudioPlugin::~AudioPlugin() {
    gPaintI.deletePaint(m_paintTrack);
    gPaintI.deletePaint(m_paintRect);
    gPaintI.deletePaint(m_paintText);
    gPaintI.deletePaint(m_paintTrackProgress);
    gPaintI.deletePaint(m_paintActiveRect);
    if(m_soundPlay->track)
        gSoundI.deleteTrack(m_soundPlay->track);
    delete m_soundPlay;
}

void BackgroundPlugin::drawPlugin(int surfaceWidth, int surfaceHeight) {

    // get the plugin's dimensions according to the DOM
    PluginObject *obj = (PluginObject*) inst()->pdata;
    const int W = obj->window->width;
    const int H = obj->window->height;

    // compute the current zoom level
    const float zoomFactorW = static_cast<float>(surfaceWidth) / W;
    const float zoomFactorH = static_cast<float>(surfaceHeight) / H;

    // check to make sure the zoom level is uniform
    if (zoomFactorW + .01 < zoomFactorH && zoomFactorW - .01 > zoomFactorH)
        gLogI.log(kError_ANPLogType, " ------ %p zoom is out of sync (%f,%f)",
                  inst(), zoomFactorW, zoomFactorH);

    // scale the variables based on the zoom level
    const int fontSize = (int)(zoomFactorW * 16);
    const int leftMargin = (int)(zoomFactorW * 10);

    // lock the surface
    ANPBitmap bitmap;
    JNIEnv* env = NULL;
    if (!m_surface || gVM->GetEnv((void**) &env, JNI_VERSION_1_4) != JNI_OK ||
        !gSurfaceI.lock(env, m_surface, &bitmap, NULL)) {
        gLogI.log(kError_ANPLogType, " ------ %p unable to lock the plugin", inst());
        return;
    }

    // create a canvas
    ANPCanvas* canvas = gCanvasI.newCanvas(&bitmap);
    gCanvasI.drawColor(canvas, 0xFFFFFFFF);

    ANPPaint* paint = gPaintI.newPaint();
    gPaintI.setFlags(paint, gPaintI.getFlags(paint) | kAntiAlias_ANPPaintFlag);
    gPaintI.setColor(paint, 0xFFFF0000);
    gPaintI.setTextSize(paint, fontSize);

    ANPTypeface* tf = gTypefaceI.createFromName("serif", kItalic_ANPTypefaceStyle);
    gPaintI.setTypeface(paint, tf);
    gTypefaceI.unref(tf);

    ANPFontMetrics fm;
    gPaintI.getFontMetrics(paint, &fm);

    gPaintI.setColor(paint, 0xFF0000FF);
    const char c[] = "This is a background plugin.";
    gCanvasI.drawText(canvas, c, sizeof(c)-1, leftMargin, -fm.fTop, paint);

    // clean up variables and unlock the surface
    gPaintI.deletePaint(paint);
    gCanvasI.deleteCanvas(canvas);
    gSurfaceI.unlock(env, m_surface);
}

void FormPlugin::drawText(ANPCanvas* canvas, TextInput textInput) {

    // get font metrics
    ANPFontMetrics fontMetrics;
    gPaintI.getFontMetrics(m_paintText, &fontMetrics);

    gCanvasI.drawText(canvas, textInput.text, textInput.charPtr,
                      textInput.rect.left + 5,
                      textInput.rect.bottom - fontMetrics.fBottom, m_paintText);
}

PaintPlugin::PaintPlugin(NPP inst) : SurfaceSubPlugin(inst) {

    m_isTouchActive = false;
    m_isTouchCurrentInput = true;
    m_activePaintColor = s_redColor;

    memset(&m_drawingSurface, 0, sizeof(m_drawingSurface));
    memset(&m_inputToggle,  0, sizeof(m_inputToggle));
    memset(&m_colorToggle, 0, sizeof(m_colorToggle));
    memset(&m_fullScreenToggle, 0, sizeof(m_fullScreenToggle));
    memset(&m_clearSurface,  0, sizeof(m_clearSurface));

    // initialize the drawing surface
    m_surface = NULL;

    // initialize the path
    m_touchPath = gPathI.newPath();
    if(!m_touchPath)
        gLogI.log(kError_ANPLogType, "----%p Unable to create the touch path", inst);

    // initialize the paint colors
    m_paintSurface = gPaintI.newPaint();
    gPaintI.setFlags(m_paintSurface, gPaintI.getFlags(m_paintSurface) | kAntiAlias_ANPPaintFlag);
    gPaintI.setColor(m_paintSurface, 0xFFC0C0C0);
    gPaintI.setTextSize(m_paintSurface, 18);

    m_paintButton = gPaintI.newPaint();
    gPaintI.setFlags(m_paintButton, gPaintI.getFlags(m_paintButton) | kAntiAlias_ANPPaintFlag);
    gPaintI.setColor(m_paintButton, 0xFFA8A8A8);

    // initialize the typeface (set the colors)
    ANPTypeface* tf = gTypefaceI.createFromName("serif", kItalic_ANPTypefaceStyle);
    gPaintI.setTypeface(m_paintSurface, tf);
    gTypefaceI.unref(tf);

    //register for touch events
    ANPEventFlags flags = kTouch_ANPEventFlag;
    NPError err = browser->setvalue(inst, kAcceptEvents_ANPSetValue, &flags);
    if (err != NPERR_NO_ERROR) {
        gLogI.log(kError_ANPLogType, "Error selecting input events.");
    }
}

NavigationPlugin::NavigationPlugin(NPP inst) : SubPlugin(inst) {

    m_hasFocus = false;
    m_activeNav = NULL;

    m_paintDisabled = gPaintI.newPaint();
    gPaintI.setFlags(m_paintDisabled, gPaintI.getFlags(m_paintDisabled) | kAntiAlias_ANPPaintFlag);
    gPaintI.setColor(m_paintDisabled, 0xFFFFFFFF);

    m_paintActive = gPaintI.newPaint();
    gPaintI.setFlags(m_paintActive, gPaintI.getFlags(m_paintActive) | kAntiAlias_ANPPaintFlag);
    gPaintI.setColor(m_paintActive, 0xFFFFFF00);

    //register for key events
    ANPEventFlags flags = kKey_ANPEventFlag;
    NPError err = browser->setvalue(inst, kAcceptEvents_ANPSetValue, &flags);
    if (err != NPERR_NO_ERROR) {
        gLogI.log(kError_ANPLogType, "Error selecting input events.");
    }
}

void PaintPlugin::paintTouch() {
    //TODO do not paint outside the drawing surface

    //create the paint color
    ANPPaint* strokePaint = gPaintI.newPaint();
    gPaintI.setFlags(strokePaint, gPaintI.getFlags(strokePaint) | kAntiAlias_ANPPaintFlag);
    gPaintI.setColor(strokePaint, m_activePaintColor);
    gPaintI.setStyle(strokePaint, kStroke_ANPPaintStyle);
    gPaintI.setStrokeWidth(strokePaint, 6.0);
    gPaintI.setStrokeCap(strokePaint, kRound_ANPPaintCap);
    gPaintI.setStrokeJoin(strokePaint, kRound_ANPPaintJoin);

    // handle the complex "touch" paint (draw a line)
    ANPRectF bounds;
    gPathI.getBounds(m_touchPath, &bounds);

    // get a canvas that is only locked around the point and draw the path
    ANPCanvas* canvas = getCanvas(&bounds);
    gCanvasI.drawPath(canvas, m_touchPath, strokePaint);

    // clean up
    releaseCanvas(canvas);
    gPaintI.deletePaint(strokePaint);
}

void FormPlugin::drawPassword(ANPCanvas* canvas, TextInput passwordInput) {

    // get font metrics
    ANPFontMetrics fontMetrics;
    gPaintI.getFontMetrics(m_paintText, &fontMetrics);

    // comput the circle dimensions and initial location
    float initialX = passwordInput.rect.left + 5;
    float ovalBottom = passwordInput.rect.bottom - 2;
    float ovalTop = ovalBottom - (fontMetrics.fBottom - fontMetrics.fTop);
    float ovalWidth = ovalBottom - ovalTop;
    float ovalSpacing = 3;

    // draw circles instead of the actual text
    for (uint32_t x = 0; x < passwordInput.charPtr; x++) {
        ANPRectF oval;
        oval.left = initialX + ((ovalWidth + ovalSpacing) * (float) x);
        oval.right = oval.left + ovalWidth;
        oval.top = ovalTop;
        oval.bottom = ovalBottom;
        gCanvasI.drawOval(canvas, &oval, m_paintText);
    }
}

void PaintPlugin::paintMouse(int x, int y) {
    //TODO do not paint outside the drawing surface

    //create the paint color
    ANPPaint* fillPaint = gPaintI.newPaint();
    gPaintI.setFlags(fillPaint, gPaintI.getFlags(fillPaint) | kAntiAlias_ANPPaintFlag);
    gPaintI.setStyle(fillPaint, kFill_ANPPaintStyle);
    gPaintI.setColor(fillPaint, m_activePaintColor);

    // handle the simple "mouse" paint (draw a point)
    ANPRectF point;
    point.left =   (float) x-3;
    point.top =    (float) y-3;
    point.right =  (float) x+3;
    point.bottom = (float) y+3;

    // get a canvas that is only locked around the point and draw it
    ANPCanvas* canvas = getCanvas(&point);
    gCanvasI.drawOval(canvas, &point, fillPaint);

    // clean up
    releaseCanvas(canvas);
    gPaintI.deletePaint(fillPaint);
}

AudioPlugin::AudioPlugin(NPP inst) : SubPlugin(inst) {

    const char path[] = "/sdcard/sample.raw";

    // open a file stream
    FILE* f = fopen(path, "r");
    gLogI.log(inst, kDebug_ANPLogType, "--- path %s FILE %p", path, f);

    // setup our private audio struct's default values
    m_soundPlay = new SoundPlay;
    m_soundPlay->instance = inst;
    m_soundPlay->progress = 0;
    m_soundPlay->fileSize = 0;
    m_soundPlay->file = f;
    m_soundPlay->track = NULL;

    // create the audio track
    if (f) {
        m_soundPlay->track = gSoundI.newTrack(44100, kPCM16Bit_ANPSampleFormat, 2, audioCallback, m_soundPlay);
        if (!m_soundPlay->track) {
            fclose(f);
            m_soundPlay->file = NULL;
        }
    }

    // get the audio file's size
    int fileDescriptor = open(path, O_RDONLY);
    struct stat fileStatus;

    if(fileDescriptor <= 0) {
        gLogI.log(inst, kError_ANPLogType, "fopen error");
    }
    else if (fstat(fileDescriptor, &fileStatus) != 0) {
        gLogI.log(inst, kDebug_ANPLogType, "File Size: %d", fileStatus.st_size);
        m_soundPlay->fileSize = fileStatus.st_size;
    } else {
        gLogI.log(inst, kError_ANPLogType, "fstat error");
    }

    // configure the UI elements
    m_activeTouch = false;

    memset(&m_trackRect, 0, sizeof(m_trackRect));
    memset(&m_playRect,  0, sizeof(m_playRect));
    memset(&m_pauseRect, 0, sizeof(m_pauseRect));
    memset(&m_stopRect,  0, sizeof(m_stopRect));

    m_paintTrack = gPaintI.newPaint();
    gPaintI.setFlags(m_paintTrack, gPaintI.getFlags(m_paintTrack) | kAntiAlias_ANPPaintFlag);
    gPaintI.setColor(m_paintTrack, 0xFFC0C0C0);

    m_paintRect = gPaintI.newPaint();
    gPaintI.setFlags(m_paintRect, gPaintI.getFlags(m_paintRect) | kAntiAlias_ANPPaintFlag);
    gPaintI.setColor(m_paintRect, 0xFFA8A8A8);

    m_paintText = gPaintI.newPaint();
    gPaintI.setFlags(m_paintText, gPaintI.getFlags(m_paintText) | kAntiAlias_ANPPaintFlag);
    gPaintI.setColor(m_paintText, 0xFF2F4F4F);
    gPaintI.setTextSize(m_paintText, 18);

    m_paintTrackProgress = gPaintI.newPaint();
    gPaintI.setFlags(m_paintTrackProgress, gPaintI.getFlags(m_paintTrackProgress) | kAntiAlias_ANPPaintFlag);
    gPaintI.setColor(m_paintTrackProgress, 0xFF545454);

    m_paintActiveRect = gPaintI.newPaint();
    gPaintI.setFlags(m_paintActiveRect, gPaintI.getFlags(m_paintActiveRect) | kAntiAlias_ANPPaintFlag);
    gPaintI.setColor(m_paintActiveRect, 0xFF545454);

    ANPTypeface* tf = gTypefaceI.createFromName("serif", kItalic_ANPTypefaceStyle);
    gPaintI.setTypeface(m_paintText, tf);
    gTypefaceI.unref(tf);

    //register for touch events
    ANPEventFlags flags = kTouch_ANPEventFlag;
    NPError err = browser->setvalue(inst, kAcceptEvents_ANPSetValue, &flags);
    if (err != NPERR_NO_ERROR) {
        gLogI.log(inst, kError_ANPLogType, "Error selecting input events.");
    }
}

void AudioPlugin::draw(ANPCanvas* canvas) {
    NPP instance = this->inst();
    PluginObject *obj = (PluginObject*) instance->pdata;

    gLogI.log(instance, kError_ANPLogType, "Drawing");

    const float trackHeight = 30;
    const float buttonWidth = 60;
    const float buttonHeight = 30;
    const int W = obj->window->width;
    const int H = obj->window->height;

    // color the plugin canvas
    gCanvasI.drawColor(canvas, 0xFFCDCDCD);

    // get font metrics
    ANPFontMetrics fontMetrics;
    gPaintI.getFontMetrics(m_paintText, &fontMetrics);

    // draw the track box (1 px from the edge)
    m_trackRect.left = 1;
    m_trackRect.top = 1;
    m_trackRect.right = W - 2;
    m_trackRect.bottom = 1 + trackHeight;
    gCanvasI.drawRect(canvas, &m_trackRect, m_paintTrack);

    // draw the progress bar
    if (m_soundPlay->progress > 0) {
        // TODO need to draw progress bar to cover the proper percentage of the track bar
        gCanvasI.drawRect(canvas, &m_trackRect, m_paintTrackProgress);
    }

    // draw the play box (under track box)
    m_playRect.left = m_trackRect.left + 5;
    m_playRect.top = m_trackRect.bottom + 10;
    m_playRect.right = m_playRect.left + buttonWidth;
    m_playRect.bottom = m_playRect.top + buttonHeight;
    gCanvasI.drawRect(canvas, &m_playRect, getPaint(&m_playRect));
    // draw the play box (under track box)
    const char playText[] = "Play";
    gCanvasI.drawText(canvas, playText, sizeof(playText)-1, m_playRect.left + 5,
                      m_playRect.top - fontMetrics.fTop, m_paintText);

    // draw the pause box (under track box)
    m_pauseRect.left = m_playRect.right + 20;
    m_pauseRect.top = m_trackRect.bottom + 10;
    m_pauseRect.right = m_pauseRect.left + buttonWidth;
    m_pauseRect.bottom = m_pauseRect.top + buttonHeight;
    gCanvasI.drawRect(canvas, &m_pauseRect, getPaint(&m_pauseRect));
    // draw the text in the pause box
    const char pauseText[] = "Pause";
    gCanvasI.drawText(canvas, pauseText, sizeof(pauseText)-1, m_pauseRect.left + 5,
                      m_pauseRect.top - fontMetrics.fTop, m_paintText);

    // draw the stop box (under track box)
    m_stopRect.left = m_pauseRect.right + 20;
    m_stopRect.top = m_trackRect.bottom + 10;
    m_stopRect.right = m_stopRect.left + buttonWidth;
    m_stopRect.bottom = m_stopRect.top + buttonHeight;
    gCanvasI.drawRect(canvas, &m_stopRect, getPaint(&m_stopRect));
    // draw the text in the pause box
    const char stopText[] = "Stop";
    gCanvasI.drawText(canvas, stopText, sizeof(stopText)-1, m_stopRect.left + 5,
                      m_stopRect.top - fontMetrics.fTop, m_paintText);
}

FormPlugin::FormPlugin(NPP inst) : SubPlugin(inst) {

    m_hasFocus = false;
    m_activeInput = NULL;

    memset(&m_usernameInput, 0, sizeof(m_usernameInput));
    memset(&m_passwordInput, 0, sizeof(m_passwordInput));

    m_usernameInput.text[0] = '\0';
    m_usernameInput.charPtr = 0;

    m_passwordInput.text[0] = '\0';
    m_passwordInput.charPtr = 0;

    m_paintInput = gPaintI.newPaint();
    gPaintI.setFlags(m_paintInput, gPaintI.getFlags(m_paintInput) | kAntiAlias_ANPPaintFlag);
    gPaintI.setColor(m_paintInput, 0xFFFFFFFF);

    m_paintActive = gPaintI.newPaint();
    gPaintI.setFlags(m_paintActive, gPaintI.getFlags(m_paintActive) | kAntiAlias_ANPPaintFlag);
    gPaintI.setColor(m_paintActive, 0xFFFFFF00);

    m_paintText = gPaintI.newPaint();
    gPaintI.setFlags(m_paintText, gPaintI.getFlags(m_paintText) | kAntiAlias_ANPPaintFlag);
    gPaintI.setColor(m_paintText, 0xFF000000);
    gPaintI.setTextSize(m_paintText, 18);

    ANPTypeface* tf = gTypefaceI.createFromName("serif", kItalic_ANPTypefaceStyle);
    gPaintI.setTypeface(m_paintText, tf);
    gTypefaceI.unref(tf);

    //register for key and visibleRect events
    ANPEventFlags flags = kKey_ANPEventFlag;
    NPError err = browser->setvalue(inst, kAcceptEvents_ANPSetValue, &flags);
    if (err != NPERR_NO_ERROR) {
        gLogI.log(kError_ANPLogType, "Error selecting input events.");
    }
}

FormPlugin::~FormPlugin() {
    gPaintI.deletePaint(m_paintInput);
    gPaintI.deletePaint(m_paintActive);
    gPaintI.deletePaint(m_paintText);
}

NavigationPlugin::~NavigationPlugin() {
    gPaintI.deletePaint(m_paintDisabled);
    gPaintI.deletePaint(m_paintActive);
}

void PaintPlugin::drawCleanPlugin(ANPCanvas* canvas) {
    NPP instance = this->inst();
    PluginObject *obj = (PluginObject*) instance->pdata;

    // if no canvas get a locked canvas
    if (!canvas)
        canvas = getCanvas();

    if (!canvas)
        return;

    const float buttonWidth = 60;
    const float buttonHeight = 30;
    const int W = obj->window->width;
    const int H = obj->window->height;

    // color the plugin canvas
    gCanvasI.drawColor(canvas, 0xFFCDCDCD);

    // get font metrics
    ANPFontMetrics fontMetrics;
    gPaintI.getFontMetrics(m_paintSurface, &fontMetrics);

    // draw the input toggle button
    m_inputToggle.left = 5;
    m_inputToggle.top = H - buttonHeight - 5;
    m_inputToggle.right = m_inputToggle.left + buttonWidth;
    m_inputToggle.bottom = m_inputToggle.top + buttonHeight;
    gCanvasI.drawRect(canvas, &m_inputToggle, m_paintButton);
    const char* inputText = m_isTouchCurrentInput ? "Touch" : "Mouse";
    gCanvasI.drawText(canvas, inputText, strlen(inputText), m_inputToggle.left + 5,
                      m_inputToggle.top - fontMetrics.fTop, m_paintSurface);

    // draw the color selector button
    m_colorToggle.left = (W/3) - (buttonWidth/2);
    m_colorToggle.top = H - buttonHeight - 5;
    m_colorToggle.right = m_colorToggle.left + buttonWidth;
    m_colorToggle.bottom = m_colorToggle.top + buttonHeight;
    gCanvasI.drawRect(canvas, &m_colorToggle, m_paintButton);
    const char* colorText = getColorText();
    gCanvasI.drawText(canvas, colorText, strlen(colorText), m_colorToggle.left + 5,
                      m_colorToggle.top - fontMetrics.fTop, m_paintSurface);

    // draw the full-screen toggle button
    m_fullScreenToggle.left = ((W*2)/3) - (buttonWidth/2);
    m_fullScreenToggle.top = H - buttonHeight - 5;
    m_fullScreenToggle.right = m_fullScreenToggle.left + buttonWidth;
    m_fullScreenToggle.bottom = m_fullScreenToggle.top + buttonHeight;
    gCanvasI.drawRect(canvas, &m_fullScreenToggle, m_paintButton);
    const char* fullScreenText = "Full";
    gCanvasI.drawText(canvas, fullScreenText, strlen(fullScreenText),
                      m_fullScreenToggle.left + 5,
                      m_fullScreenToggle.top - fontMetrics.fTop, m_paintSurface);

    // draw the clear canvas button
    m_clearSurface.left = W - buttonWidth - 5;
    m_clearSurface.top = H - buttonHeight - 5;
    m_clearSurface.right = m_clearSurface.left + buttonWidth;
    m_clearSurface.bottom = m_clearSurface.top + buttonHeight;
    gCanvasI.drawRect(canvas, &m_clearSurface, m_paintButton);
    const char* clearText = "Clear";
    gCanvasI.drawText(canvas, clearText, strlen(clearText), m_clearSurface.left + 5,
                      m_clearSurface.top - fontMetrics.fTop, m_paintSurface);

    // draw the drawing surface box (5 px from the edge)
    m_drawingSurface.left = 5;
    m_drawingSurface.top = 5;
    m_drawingSurface.right = W - 5;
    m_drawingSurface.bottom = m_colorToggle.top - 5;
    gCanvasI.drawRect(canvas, &m_drawingSurface, m_paintSurface);

    // release the canvas
    releaseCanvas(canvas);
}