Example usage for android.webkit WebSettings setSupportZoom

Introduction

In this page you can find the example usage for android.webkit WebSettings setSupportZoom.

Prototype

public abstract void setSupportZoom(boolean support);

Source Link

Document

Sets whether the WebView should support zooming using its on-screen zoom controls and gestures.

Usage

From source file:com.tct.mail.ui.ConversationViewFragment.java

private void setupOverviewMode() {
    // for now, overview mode means use the built-in WebView zoom and disable custom scale
    // gesture handling
    final boolean overviewMode = isOverviewMode(mAccount);
    final WebSettings settings = mWebView.getSettings();
    final WebSettings.LayoutAlgorithm layout;
    // TS: zhaotianyong 2015-03-13 EMAIL BUGFIX-932165 DEL_S
    //        settings.setUseWideViewPort(overviewMode);
    // TS: zhaotianyong 2015-03-13 EMAIL BUGFIX-932165 DEL_E
    settings.setSupportZoom(overviewMode);
    settings.setBuiltInZoomControls(overviewMode);
    // TS: zhaotianyong 2015-03-13 EMAIL BUGFIX-932165 DEL_S
    //        settings.setLoadWithOverviewMode(overviewMode);
    // TS: zhaotianyong 2015-03-13 EMAIL BUGFIX-932165 DEL_E
    if (overviewMode) {
        settings.setDisplayZoomControls(false);
        layout = WebSettings.LayoutAlgorithm.NORMAL;
    } else {/* ww  w. jav a  2 s . c  om*/
        layout = WebSettings.LayoutAlgorithm.NARROW_COLUMNS;
    }
    settings.setLayoutAlgorithm(layout);
}

From source file:android.webkit.cts.WebViewTest.java

public void testZoom() throws Throwable {
    if (!NullWebViewUtils.isWebViewAvailable()) {
        return;/*from  www.  ja v a 2 s.  com*/
    }

    // Pinch zoom is not supported in wrap_content layouts.
    mOnUiThread.setLayoutHeightToMatchParent();

    final ScaleChangedWebViewClient webViewClient = new ScaleChangedWebViewClient();
    mOnUiThread.setWebViewClient(webViewClient);

    mWebServer = new CtsTestServer(getActivity());
    mOnUiThread.loadUrlAndWaitForCompletion(mWebServer.getAssetUrl(TestHtmlConstants.HELLO_WORLD_URL));
    pollingCheckForCanZoomIn();

    WebSettings settings = mOnUiThread.getSettings();
    settings.setSupportZoom(false);
    assertFalse(settings.supportZoom());
    float currScale = mOnUiThread.getScale();
    float previousScale = currScale;

    // can zoom in or out although zoom support is disabled in web settings
    assertTrue(mOnUiThread.zoomIn());
    webViewClient.waitForScaleChanged();

    currScale = mOnUiThread.getScale();
    assertTrue(currScale > previousScale);

    assertTrue(mOnUiThread.zoomOut());
    previousScale = currScale;
    webViewClient.waitForScaleChanged();

    currScale = mOnUiThread.getScale();
    assertTrue(currScale < previousScale);

    mOnUiThread.zoomBy(1.25f); // zoom in
    previousScale = currScale;
    webViewClient.waitForScaleChanged();

    currScale = mOnUiThread.getScale();
    assertTrue(currScale > previousScale);

    mOnUiThread.zoomBy(0.8f); // zoom out
    previousScale = currScale;
    webViewClient.waitForScaleChanged();

    currScale = mOnUiThread.getScale();
    assertTrue(currScale < previousScale);

    // enable zoom support
    settings.setSupportZoom(true);
    assertTrue(settings.supportZoom());
    previousScale = mOnUiThread.getScale();

    assertTrue(mOnUiThread.zoomIn());
    webViewClient.waitForScaleChanged();

    currScale = mOnUiThread.getScale();
    assertTrue(currScale > previousScale);

    // zoom in until it reaches maximum scale
    while (mOnUiThread.zoomIn()) {
        previousScale = currScale;
        webViewClient.waitForScaleChanged();
        currScale = mOnUiThread.getScale();
        assertTrue(currScale > previousScale);
    }

    previousScale = currScale;
    // can not zoom in further
    assertFalse(mOnUiThread.zoomIn());

    // We sleep to assert to the best of our ability
    // that a scale change does *not* happen.
    Thread.sleep(500);
    currScale = mOnUiThread.getScale();
    assertEquals(currScale, previousScale);

    assertTrue(mOnUiThread.zoomOut());
    previousScale = currScale;
    webViewClient.waitForScaleChanged();

    currScale = mOnUiThread.getScale();
    assertTrue(currScale < previousScale);

    // zoom out until it reaches minimum scale
    while (mOnUiThread.zoomOut()) {
        previousScale = currScale;
        webViewClient.waitForScaleChanged();
        currScale = mOnUiThread.getScale();
        assertTrue(currScale < previousScale);
    }

    previousScale = currScale;
    assertFalse(mOnUiThread.zoomOut());

    // We sleep to assert to the best of our ability
    // that a scale change does *not* happen.
    Thread.sleep(500);
    currScale = mOnUiThread.getScale();
    assertEquals(currScale, previousScale);

    mOnUiThread.zoomBy(1.25f);
    previousScale = currScale;
    webViewClient.waitForScaleChanged();

    currScale = mOnUiThread.getScale();
    assertTrue(currScale > previousScale);

    // zoom in until it reaches maximum scale
    while (mOnUiThread.canZoomIn()) {
        previousScale = currScale;
        mOnUiThread.zoomBy(1.25f);
        webViewClient.waitForScaleChanged();
        currScale = mOnUiThread.getScale();
        assertTrue(currScale > previousScale);
    }

    previousScale = currScale;

    // We sleep to assert to the best of our ability
    // that a scale change does *not* happen.
    Thread.sleep(500);
    currScale = mOnUiThread.getScale();
    assertEquals(currScale, previousScale);

    mOnUiThread.zoomBy(0.8f);
    previousScale = currScale;
    webViewClient.waitForScaleChanged();

    currScale = mOnUiThread.getScale();
    assertTrue(currScale < previousScale);

    // zoom out until it reaches minimum scale
    while (mOnUiThread.canZoomOut()) {
        previousScale = currScale;
        mOnUiThread.zoomBy(0.8f);
        webViewClient.waitForScaleChanged();
        currScale = mOnUiThread.getScale();
        assertTrue(currScale < previousScale);
    }

    previousScale = currScale;

    // We sleep to assert to the best of our ability
    // that a scale change does *not* happen.
    Thread.sleep(500);
    currScale = mOnUiThread.getScale();
    assertEquals(currScale, previousScale);
}

From source file:android.webkit.cts.WebViewTest.java

@SuppressWarnings("deprecation")
@UiThreadTest/*from ww w.  ja  v a2  s  .c  o  m*/
public void testGetZoomControls() {
    if (!NullWebViewUtils.isWebViewAvailable()) {
        return;
    }
    WebSettings settings = mWebView.getSettings();
    assertTrue(settings.supportZoom());
    View zoomControls = mWebView.getZoomControls();
    assertNotNull(zoomControls);

    // disable zoom support
    settings.setSupportZoom(false);
    assertFalse(settings.supportZoom());
    assertNull(mWebView.getZoomControls());
}