Java Code Examples for org.chromium.chrome.browser.tab.Tab#getNativePage()

private boolean canEnterVR(Tab tab) {
    if (!LibraryLoader.isInitialized()) {
        return false;
    }
    // If vr isn't in the build, or we haven't initialized yet, or vr shell is not enabled and
    // this is not a web vr request, then return immediately.
    if (!mVrAvailable || mNativeVrShellDelegate == 0
            || (!isVrShellEnabled() && !(mRequestedWebVR || mListeningForWebVrActivate))) {
        return false;
    }
    // TODO(mthiesse): When we have VR UI for opening new tabs, etc., allow VR Shell to be
    // entered without any current tabs.
    if (tab == null || tab.getContentViewCore() == null) {
        return false;
    }
    // For now we don't handle native pages. crbug.com/661609
    if (tab.getNativePage() != null || tab.isShowingSadTab()) {
        return false;
    }
    // crbug.com/667781
    if (MultiWindowUtils.getInstance().isInMultiWindowMode(mActivity)) {
        return false;
    }
    return true;
}
 

private void freeze(Tab tab) {
    if (tab == null) return;
    NativePage pageToFreeze = tab.getNativePage();
    if (pageToFreeze == null || pageToFreeze instanceof FrozenNativePage
            || pageToFreeze.getView().getParent() != null) {
        return;
    }
    tab.freezeNativePage();
}
 

private boolean shouldShowCusrsorInLocationBar() {
    Tab tab = mToolbarModel.getTab();
    if (tab == null) return false;
    NativePage nativePage = tab.getNativePage();
    if (!(nativePage instanceof NewTabPage) && !(nativePage instanceof IncognitoNewTabPage)) {
        return false;
    }

    Context context = mToolbar.getContext();
    return DeviceFormFactor.isTablet()
            && context.getResources().getConfiguration().keyboard
            == Configuration.KEYBOARD_QWERTY;
}
 

private void freeze(Tab tab) {
    if (tab == null) return;
    NativePage pageToFreeze = tab.getNativePage();
    if (pageToFreeze == null || pageToFreeze instanceof FrozenNativePage
            || pageToFreeze.getView().getParent() != null) {
        return;
    }
    tab.freezeNativePage();
}
 

/**
 * Cache the content of a tab as a thumbnail.
 * @param tab The tab whose content we will cache.
 */
public void cacheTabThumbnail(final Tab tab) {
    if (mNativeTabContentManager != 0 && mSnapshotsEnabled) {
        if (tab.getNativePage() != null) {
            Bitmap nativePageBitmap = readbackNativePage(tab, mThumbnailScale);
            if (nativePageBitmap == null) return;
            nativeCacheTabWithBitmap(mNativeTabContentManager, tab, nativePageBitmap,
                    mThumbnailScale);
            nativePageBitmap.recycle();
        } else {
            if (tab.getWebContents() == null) return;
            nativeCacheTab(mNativeTabContentManager, tab, mThumbnailScale);
        }
    }
}
 

private Bitmap readbackNativePage(final Tab tab, float scale) {
    Bitmap bitmap = null;
    NativePage page = tab.getNativePage();
    if (page == null) {
        return bitmap;
    }

    View viewToDraw = page.getView();
    if (viewToDraw == null || viewToDraw.getWidth() == 0 || viewToDraw.getHeight() == 0) {
        return bitmap;
    }

    if (page instanceof InvalidationAwareThumbnailProvider) {
        if (!((InvalidationAwareThumbnailProvider) page).shouldCaptureThumbnail()) {
            return null;
        }
    }

    float overlayTranslateY = mContentOffsetProvider.getOverlayTranslateY();

    try {
        bitmap = Bitmap.createBitmap(
                (int) (viewToDraw.getWidth() * mThumbnailScale),
                (int) ((viewToDraw.getHeight() - overlayTranslateY) * mThumbnailScale),
                Bitmap.Config.ARGB_8888);
    } catch (OutOfMemoryError ex) {
        return null;
    }

    Canvas c = new Canvas(bitmap);
    c.scale(scale, scale);
    c.translate(0.f, -overlayTranslateY);
    if (page instanceof InvalidationAwareThumbnailProvider) {
        ((InvalidationAwareThumbnailProvider) page).captureThumbnail(c);
    } else {
        viewToDraw.draw(c);
    }

    return bitmap;
}
 

@Override
public void initLayoutTabFromHost(final int tabId) {
    if (getTabModelSelector() == null || getActiveLayout() == null) return;

    TabModelSelector selector = getTabModelSelector();
    Tab tab = selector.getTabById(tabId);
    if (tab == null) return;

    LayoutTab layoutTab = mTabCache.get(tabId);
    if (layoutTab == null) return;

    String url = tab.getUrl();
    boolean isNativePage = url != null && url.startsWith(UrlConstants.CHROME_NATIVE_URL_PREFIX);
    int themeColor = tab.getThemeColor();

    boolean canUseLiveTexture =
            tab.getContentViewCore() != null && !tab.isShowingSadTab() && !isNativePage;

    boolean isNtp = tab.getNativePage() instanceof NewTabPage;
    boolean needsUpdate = layoutTab.initFromHost(tab.getBackgroundColor(), tab.shouldStall(),
            canUseLiveTexture, themeColor,
            ColorUtils.getTextBoxColorForToolbarBackground(
                    mContext.getResources(), isNtp, themeColor),
            ColorUtils.getTextBoxAlphaForToolbarBackground(tab));
    if (needsUpdate) requestUpdate();

    mHost.requestRender();
}
 

/**
 * @return Alpha for the textbox given a Tab.
 */
public static float getTextBoxAlphaForToolbarBackground(Tab tab) {
    int color = tab.getThemeColor();
    if (tab.getNativePage() instanceof NewTabPage) {
        if (((NewTabPage) tab.getNativePage()).isLocationBarShownInNTP()) return 0f;
    }
    return shouldUseOpaqueTextboxBackground(color)
            ? 1f : LOCATION_BAR_TRANSPARENT_BACKGROUND_ALPHA;
}
 

/**
 * @return The base color for the textbox given a toolbar background color.
 */
public static int getTextBoxColorForToolbarBackground(Resources res, Tab tab, int color) {
    if (shouldUseOpaqueTextboxBackground(color)) {
        // NTP should have no visible textbox in the toolbar, so just return the toolbar's
        // background color.
        if (tab.getNativePage() instanceof NewTabPage) {
            return ApiCompatibilityUtils.getColor(res, R.color.ntp_bg);
        }

        return Color.WHITE;
    }
    return getColorWithOverlay(color, Color.WHITE, LOCATION_BAR_TRANSPARENT_BACKGROUND_ALPHA);
}
 

@Override
public NewTabPage getNewTabPageForCurrentTab() {
    Tab currentTab = getTab();
    if (currentTab != null && currentTab.getNativePage() instanceof NewTabPage) {
        return (NewTabPage) currentTab.getNativePage();
    }
    return null;
}
 

private boolean shouldShowCusrsorInLocationBar() {
    Tab tab = mToolbarModel.getTab();
    if (tab == null) return false;
    NativePage nativePage = tab.getNativePage();
    if (!(nativePage instanceof NewTabPage) && !(nativePage instanceof IncognitoNewTabPage)) {
        return false;
    }

    Context context = mToolbar.getContext();
    return DeviceFormFactor.isTablet(context)
            && context.getResources().getConfiguration().keyboard
            == Configuration.KEYBOARD_QWERTY;
}
 

private Bitmap readbackNativePage(final Tab tab, float scale) {
    Bitmap bitmap = null;
    NativePage page = tab.getNativePage();
    if (page == null) {
        return bitmap;
    }

    View viewToDraw = page.getView();
    if (viewToDraw == null || viewToDraw.getWidth() == 0 || viewToDraw.getHeight() == 0) {
        return bitmap;
    }

    if (page instanceof InvalidationAwareThumbnailProvider) {
        if (!((InvalidationAwareThumbnailProvider) page).shouldCaptureThumbnail()) {
            return null;
        }
    }

    int overlayTranslateY = mContentOffsetProvider.getOverlayTranslateY();

    try {
        bitmap = Bitmap.createBitmap(
                (int) (viewToDraw.getWidth() * mThumbnailScale),
                (int) ((viewToDraw.getHeight() - overlayTranslateY) * mThumbnailScale),
                Bitmap.Config.ARGB_8888);
    } catch (OutOfMemoryError ex) {
        return null;
    }

    Canvas c = new Canvas(bitmap);
    c.scale(scale, scale);
    c.translate(0.f, -overlayTranslateY);
    if (page instanceof InvalidationAwareThumbnailProvider) {
        ((InvalidationAwareThumbnailProvider) page).captureThumbnail(c);
    } else {
        viewToDraw.draw(c);
    }

    return bitmap;
}
 

/**
 * Cache the content of a tab as a thumbnail.
 * @param tab The tab whose content we will cache.
 */
public void cacheTabThumbnail(final Tab tab) {
    if (mNativeTabContentManager != 0 && mSnapshotsEnabled) {
        if (tab.getNativePage() != null) {
            Bitmap nativePageBitmap = readbackNativePage(tab, mThumbnailScale);
            if (nativePageBitmap == null) return;
            nativeCacheTabWithBitmap(mNativeTabContentManager, tab, nativePageBitmap,
                    mThumbnailScale);
            nativePageBitmap.recycle();
        } else {
            if (tab.getWebContents() == null) return;
            nativeCacheTab(mNativeTabContentManager, tab, mThumbnailScale);
        }
    }
}
 

private Bitmap readbackNativePage(final Tab tab, float scale) {
    Bitmap bitmap = null;
    NativePage page = tab.getNativePage();
    if (page == null) {
        return bitmap;
    }

    View viewToDraw = page.getView();
    if (viewToDraw == null || viewToDraw.getWidth() == 0 || viewToDraw.getHeight() == 0) {
        return bitmap;
    }

    if (page instanceof InvalidationAwareThumbnailProvider) {
        if (!((InvalidationAwareThumbnailProvider) page).shouldCaptureThumbnail()) {
            return null;
        }
    }

    int overlayTranslateY = mContentOffsetProvider.getOverlayTranslateY();

    try {
        bitmap = Bitmap.createBitmap(
                (int) (viewToDraw.getWidth() * mThumbnailScale),
                (int) ((viewToDraw.getHeight() - overlayTranslateY) * mThumbnailScale),
                Bitmap.Config.ARGB_8888);
    } catch (OutOfMemoryError ex) {
        return null;
    }

    Canvas c = new Canvas(bitmap);
    c.scale(scale, scale);
    c.translate(0.f, -overlayTranslateY);
    if (page instanceof InvalidationAwareThumbnailProvider) {
        ((InvalidationAwareThumbnailProvider) page).captureThumbnail(c);
    } else {
        viewToDraw.draw(c);
    }

    return bitmap;
}
 

/**
 * @return Alpha for the textbox given a Tab.
 */
public static float getTextBoxAlphaForToolbarBackground(Tab tab) {
    int color = tab.getThemeColor();
    if (tab.getNativePage() instanceof NewTabPage) {
        if (((NewTabPage) tab.getNativePage()).isLocationBarShownInNTP()) return 0f;
    }
    return shouldUseOpaqueTextboxBackground(color)
            ? 1f : LOCATION_BAR_TRANSPARENT_BACKGROUND_ALPHA;
}
 

/**
 * @return The base color for the textbox given a toolbar background color.
 */
public static int getTextBoxColorForToolbarBackground(Resources res, Tab tab, int color) {
    if (shouldUseOpaqueTextboxBackground(color)) {
        // NTP should have no visible textbox in the toolbar, so just return the toolbar's
        // background color.
        if (tab.getNativePage() instanceof NewTabPage) {
            return NtpColorUtils.getToolbarBackgroundColorResource(res);
        }

        return Color.WHITE;
    }
    return getColorWithOverlay(color, Color.WHITE, LOCATION_BAR_TRANSPARENT_BACKGROUND_ALPHA);
}
 

@Override
public NewTabPage getNewTabPageForCurrentTab() {
    Tab currentTab = getTab();
    if (currentTab != null && currentTab.getNativePage() instanceof NewTabPage) {
        return (NewTabPage) currentTab.getNativePage();
    }
    return null;
}
 

private boolean shouldShowCusrsorInLocationBar() {
    Tab tab = mToolbarModel.getTab();
    if (tab == null) return false;
    NativePage nativePage = tab.getNativePage();
    if (!(nativePage instanceof NewTabPage) && !(nativePage instanceof IncognitoNewTabPage)) {
        return false;
    }

    Context context = mToolbar.getContext();
    return DeviceFormFactor.isTablet(context)
            && context.getResources().getConfiguration().keyboard
            == Configuration.KEYBOARD_QWERTY;
}
 

private void freeze(Tab tab) {
    if (tab == null) return;
    NativePage pageToFreeze = tab.getNativePage();
    if (pageToFreeze == null || pageToFreeze instanceof FrozenNativePage
            || pageToFreeze.getView().getParent() != null) {
        return;
    }
    tab.freezeNativePage();
}
 

/**
 * Cache the content of a tab as a thumbnail.
 * @param tab The tab whose content we will cache.
 */
public void cacheTabThumbnail(final Tab tab) {
    if (mNativeTabContentManager != 0 && mSnapshotsEnabled) {
        if (tab.getNativePage() != null) {
            Bitmap nativePageBitmap = readbackNativePage(tab, mThumbnailScale);
            if (nativePageBitmap == null) return;
            nativeCacheTabWithBitmap(mNativeTabContentManager, tab, nativePageBitmap,
                    mThumbnailScale);
            nativePageBitmap.recycle();
        } else {
            nativeCacheTab(mNativeTabContentManager, tab, tab.getContentViewCore(),
                    mThumbnailScale);
        }
    }
}