Expose smart-zoom, or centerFitRect to native. (e8300a1d) · Commits · e / os / android_frameworks_base

core/java/android/webkit/WebView.java

+38 −29

Original line number	Diff line number	Diff line
		@@ -535,9 +535,10 @@ public class WebView extends AbsoluteLayout
		static final int SET_ROOT_LAYER_MSG_ID = 124;
		static final int RETURN_LABEL = 125;
		static final int FIND_AGAIN = 126;
		static final int CENTER_FIT_RECT = 127;

		private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID;
		private static final int LAST_PACKAGE_MSG_ID = FIND_AGAIN;
		private static final int LAST_PACKAGE_MSG_ID = CENTER_FIT_RECT;

		static final String[] HandlerPrivateDebugString = {
		"REMEMBER_PASSWORD", // = 1;
		@@ -578,7 +579,8 @@ public class WebView extends AbsoluteLayout
		"IMMEDIATE_REPAINT_MSG_ID", // = 123;
		"SET_ROOT_LAYER_MSG_ID", // = 124;
		"RETURN_LABEL", // = 125;
		"FIND_AGAIN" // = 126;
		"FIND_AGAIN", // = 126;
		"CENTER_FIT_RECT" // = 127;
		};

		// If the site doesn't use the viewport meta tag to specify the viewport,
		@@ -5737,49 +5739,50 @@ public class WebView extends AbsoluteLayout
		}

		/*
		* Maximize and center the view inside the WebView. If the zoom doesn't need
		* to be changed, do an animated scroll to center it. If the zoom needs to
		* be changed, find the zoom center and do a smooth zoom transition.
		* Maximize and center the rectangle, specified in the document coordinate
		* space, inside the WebView. If the zoom doesn't need to be changed, do an
		* animated scroll to center it. If the zoom needs to be changed, find the
		* zoom center and do a smooth zoom transition.
		*/
		private void centerPluginOnScreen(ViewManager.ChildView child) {
		private void centerFitRect(int docX, int docY, int docWidth, int docHeight) {
		int viewWidth = getViewWidth();
		int viewHeight = getViewHeightWithTitle();
		float scale = Math.min((float) viewWidth / child.width,
		(float) viewHeight / child.height);
		float scale = Math.min((float) viewWidth / docWidth, (float) viewHeight
		/ docHeight);
		if (scale < mMinZoomScale) {
		scale = mMinZoomScale;
		} else if (scale > mMaxZoomScale) {
		scale = mMaxZoomScale;
		}
		if (Math.abs(scale - mActualScale) < MINIMUM_SCALE_INCREMENT) {
		pinScrollTo(
		contentToViewX(child.x + child.width / 2) - viewWidth / 2,
		contentToViewY(child.y + child.height / 2) - viewHeight / 2,
		pinScrollTo(contentToViewX(docX + docWidth / 2) - viewWidth / 2,
		contentToViewY(docY + docHeight / 2) - viewHeight / 2,
		true, 0);
		} else {
		int oldScreenX = contentToViewX(child.x) - mScrollX;
		int newPluginX = (int) (child.x * scale);
		int newPluginWidth = (int) (child.width * scale);
		int oldScreenX = contentToViewX(docX) - mScrollX;
		int rectViewX = (int) (docX * scale);
		int rectViewWidth = (int) (docWidth * scale);
		int newMaxWidth = (int) (mContentWidth * scale);
		int newScreenX = (viewWidth - newPluginWidth) / 2;
		int newScreenX = (viewWidth - rectViewWidth) / 2;
		// pin the newX to the WebView
		if (newScreenX > newPluginX) {
		newScreenX = newPluginX;
		} else if (newScreenX > (newMaxWidth - newPluginX - newPluginWidth)) {
		newScreenX = viewWidth - (newMaxWidth - newPluginX);
		if (newScreenX > rectViewX) {
		newScreenX = rectViewX;
		} else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) {
		newScreenX = viewWidth - (newMaxWidth - rectViewX);
		}
		mZoomCenterX = (oldScreenX * scale - newScreenX * mActualScale)
		/ (scale - mActualScale);
		int oldScreenY = contentToViewY(child.y) - mScrollY;
		int newPluginY = (int) (child.y * scale) + getTitleHeight();
		int newPluginHeight = (int) (child.height * scale);
		int newMaxHeight = (int) (mContentHeight * scale) + getTitleHeight();
		int newScreenY = (viewHeight - newPluginHeight) / 2;
		int oldScreenY = contentToViewY(docY) - mScrollY;
		int rectViewY = (int) (docY * scale) + getTitleHeight();
		int rectViewHeight = (int) (docHeight * scale);
		int newMaxHeight = (int) (mContentHeight * scale)
		+ getTitleHeight();
		int newScreenY = (viewHeight - rectViewHeight) / 2;
		// pin the newY to the WebView
		if (newScreenY > newPluginY) {
		newScreenY = newPluginY;
		} else if (newScreenY > (newMaxHeight - newPluginY - newPluginHeight)) {
		newScreenY = viewHeight - (newMaxHeight - newPluginY);
		if (newScreenY > rectViewY) {
		newScreenY = rectViewY;
		} else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) {
		newScreenY = viewHeight - (newMaxHeight - rectViewY);
		}
		mZoomCenterY = (oldScreenY * scale - newScreenY * mActualScale)
		/ (scale - mActualScale);
		@@ -5825,7 +5828,7 @@ public class WebView extends AbsoluteLayout
		true);
		} else {
		mInZoomOverview = false;
		centerPluginOnScreen(plugin);
		centerFitRect(plugin.x, plugin.y, plugin.width, plugin.height);
		}
		return;
		}
		@@ -6642,6 +6645,12 @@ public class WebView extends AbsoluteLayout
		}
		break;

		case CENTER_FIT_RECT:
		Rect r = (Rect)msg.obj;
		mInZoomOverview = false;
		centerFitRect(r.left, r.top, r.width(), r.height());
		break;

		default:
		super.handleMessage(msg);
		break;

core/java/android/webkit/WebViewCore.java

+9 −0

Original line number	Diff line number	Diff line
		@@ -2462,6 +2462,15 @@ final class WebViewCore {
		}
		}

		// called by JNI
		private void centerFitRect(int x, int y, int width, int height) {
		if (mWebView == null) {
		return;
		}
		mWebView.mPrivateHandler.obtainMessage(WebView.CENTER_FIT_RECT,
		new Rect(x, y, x + width, y + height)).sendToTarget();
		}

		private native void nativePause();
		private native void nativeResume();
		private native void nativeFreeMemory();