github/phonegap-mobile-accessibility
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Code Issues Projects Releases Wiki Activity

Add support for adjusting text in the WebView to the preferred zoom scale on Android.

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More robust iOS support is forthcoming, but currently works with iOS7
Dynamic Type Fonts by setting the following css on the body and using
relatively sized fonts sizing for child containers, for example:

body {
   font: -apple-system-body;
}

body > .app {
  font-family: 'HelveticaNeue-Light', 'HelveticaNeue', Helvetica,
Arial, sans-serif;
  font-size:0.75em;
  font-weight: 200;
}
This commit is contained in:
Michael Jordan
2014-03-06 21:44:05 -05:00
parent 4b62a1f24a
commit 728a327ab0
7 changed files with 191 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/android/com/phonegap/plugin/mobileaccessibility/MobileAccessibility.java
+63 -11
View File
@@ -22,6 +22,7 @@ public class MobileAccessibility extends CordovaPlugin {
protected boolean mClosedCaptioningEnabled = false;
protected boolean mTouchExplorationEnabled = false;
protected boolean mCachedIsScreenReaderRunning = false;
protected float mFontScale = 1;
@Override
public void initialize(CordovaInterface cordova, CordovaWebView webView) {
@@ -58,6 +59,20 @@ public class MobileAccessibility extends CordovaPlugin {
}
}
return true;
} else if(action.equals("getTextZoom")) {
getTextZoom(callbackContext);
return true;
} else if(action.equals("setTextZoom")) {
if (args.length() > 0) {
int textZoom = args.getInt(0);
if (textZoom > 0) {
setTextZoom(textZoom, callbackContext);
}
}
return true;
} else if(action.equals("updateTextZoom")) {
updateTextZoom();
return true;
} else if (action.equals("start")) {
start(callbackContext);
return true;
@@ -73,13 +88,13 @@ public class MobileAccessibility extends CordovaPlugin {
}
/**
* Called when the system is about to start resuming a previous activity.
* Called when the system is about to pause the current activity
*
* @param multitasking Flag indicating if multitasking is turned on for app
*/
@Override
public void onPause(boolean multitasking) {
Log.i("MobileAccessibility", "onPause");
//Log.i("MobileAccessibility", "onPause");
mCachedIsScreenReaderRunning = mIsScreenReaderRunning;
}
@@ -90,9 +105,9 @@ public class MobileAccessibility extends CordovaPlugin {
*/
@Override
public void onResume(boolean multitasking) {
Log.i("MobileAccessibility", "onResume");
//Log.i("MobileAccessibility", "onResume");
if (mIsScreenReaderRunning && !mCachedIsScreenReaderRunning) {
Log.i("MobileAccessibility", "Reloading page on reload because the Accessibility State has changed.");
//Log.i("MobileAccessibility", "Reloading page on reload because the Accessibility State has changed.");
mCachedIsScreenReaderRunning = mIsScreenReaderRunning;
stop();
cordova.getActivity().runOnUiThread(new Runnable() {
@@ -100,9 +115,7 @@ public class MobileAccessibility extends CordovaPlugin {
webView.reload();
}
});
}
}
/**
@@ -198,6 +211,45 @@ public class MobileAccessibility extends CordovaPlugin {
});
}
public void getTextZoom(final CallbackContext callbackContext) {
cordova.getActivity().runOnUiThread(new Runnable() {
public void run() {
final int textZoom = mMobileAccessibilityHelper.getTextZoom();
if (callbackContext != null) {
callbackContext.success(textZoom);
}
}
});
}
public void setTextZoom(final int textZoom, final CallbackContext callbackContext) {
cordova.getActivity().runOnUiThread(new Runnable() {
public void run() {
mMobileAccessibilityHelper.setTextZoom(textZoom);
if (callbackContext != null) {
callbackContext.success(mMobileAccessibilityHelper.getTextZoom());
};
}
});
}
public void setTextZoom(final int textZoom) {
cordova.getActivity().runOnUiThread(new Runnable() {
public void run() {
mMobileAccessibilityHelper.setTextZoom(textZoom);
}
});
}
public void updateTextZoom() {
float fontScale = cordova.getActivity().getResources().getConfiguration().fontScale;
if (fontScale != mFontScale) {
mFontScale = fontScale;
}
int textZoom = Math.round(mFontScale * 100);
setTextZoom(textZoom);
}
protected void sendMobileAccessibilityStatusChangedCallback() {
if (this.mCallbackContext != null) {
PluginResult result = new PluginResult(PluginResult.Status.OK, getMobileAccessibilityStatus());
@@ -213,9 +265,9 @@ public class MobileAccessibility extends CordovaPlugin {
status.put("isScreenReaderRunning", mIsScreenReaderRunning);
status.put("isClosedCaptioningEnabled", mClosedCaptioningEnabled);
status.put("isTouchExplorationEnabled", mTouchExplorationEnabled);
Log.i("MobileAccessibility", "MobileAccessibility.isScreenReaderRunning == " + status.getString("isScreenReaderRunning") +
"\nMobileAccessibility.isClosedCaptioningEnabled == " + status.getString("isClosedCaptioningEnabled") +
"\nMobileAccessibility.isTouchExplorationEnabled == " + status.getString("isTouchExplorationEnabled") );
//Log.i("MobileAccessibility", "MobileAccessibility.isScreenReaderRunning == " + status.getString("isScreenReaderRunning") +
// "\nMobileAccessibility.isClosedCaptioningEnabled == " + status.getString("isClosedCaptioningEnabled") +
// "\nMobileAccessibility.isTouchExplorationEnabled == " + status.getString("isTouchExplorationEnabled") );
} catch (JSONException e) {
e.printStackTrace();
}
@@ -223,14 +275,14 @@ public class MobileAccessibility extends CordovaPlugin {
}
protected void start(CallbackContext callbackContext) {
Log.i("MobileAccessibility", "MobileAccessibility.start");
//Log.i("MobileAccessibility", "MobileAccessibility.start");
mCallbackContext = callbackContext;
mMobileAccessibilityHelper.addStateChangeListeners();
sendMobileAccessibilityStatusChangedCallback();
}
protected void stop() {
Log.i("MobileAccessibility", "MobileAccessibility.stop");
//Log.i("MobileAccessibility", "MobileAccessibility.stop");
if (mCallbackContext != null) {
sendMobileAccessibilityStatusChangedCallback();
mMobileAccessibilityHelper.removeStateChangeListeners();