diff options
Diffstat (limited to 'eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/common/layout/GravityHelper.java')
| -rw-r--r-- | eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/common/layout/GravityHelper.java | 233 |
1 files changed, 0 insertions, 233 deletions
diff --git a/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/common/layout/GravityHelper.java b/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/common/layout/GravityHelper.java deleted file mode 100644 index b9aabad3f..000000000 --- a/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/common/layout/GravityHelper.java +++ /dev/null @@ -1,233 +0,0 @@ -/* - * Copyright (C) 2011 The Android Open Source Project - * - * Licensed under the Eclipse Public License, Version 1.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.eclipse.org/org/documents/epl-v10.php - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -package com.android.ide.common.layout; - -import static com.android.SdkConstants.ANDROID_URI; -import static com.android.SdkConstants.ATTR_LAYOUT_GRAVITY; -import static com.android.SdkConstants.GRAVITY_VALUE_BOTTOM; -import static com.android.SdkConstants.GRAVITY_VALUE_CENTER; -import static com.android.SdkConstants.GRAVITY_VALUE_CENTER_HORIZONTAL; -import static com.android.SdkConstants.GRAVITY_VALUE_CENTER_VERTICAL; -import static com.android.SdkConstants.GRAVITY_VALUE_FILL; -import static com.android.SdkConstants.GRAVITY_VALUE_FILL_HORIZONTAL; -import static com.android.SdkConstants.GRAVITY_VALUE_FILL_VERTICAL; -import static com.android.SdkConstants.GRAVITY_VALUE_LEFT; -import static com.android.SdkConstants.GRAVITY_VALUE_RIGHT; -import static com.android.SdkConstants.GRAVITY_VALUE_TOP; - -import org.w3c.dom.Element; - -/** Helper class for looking up the gravity masks of gravity attributes */ -public class GravityHelper { - // From SDK constants; temporary - public static final String GRAVITY_VALUE_START = "start"; //$NON-NLS-1$ - public static final String GRAVITY_VALUE_END = "end"; //$NON-NLS-1$ - - /** Bitmask for a gravity which includes left */ - @SuppressWarnings("PointlessBitwiseExpression") // for symmetry with other fields - public static final int GRAVITY_LEFT = 1 << 0; - - /** Bitmask for a gravity which includes right */ - public static final int GRAVITY_RIGHT = 1 << 1; - - /** Bitmask for a gravity which includes center horizontal */ - public static final int GRAVITY_CENTER_HORIZ = 1 << 2; - - /** Bitmask for a gravity which includes fill horizontal */ - public static final int GRAVITY_FILL_HORIZ = 1 << 3; - - /** Bitmask for a gravity which includes center vertical */ - public static final int GRAVITY_CENTER_VERT = 1 << 4; - - /** Bitmask for a gravity which includes fill vertical */ - public static final int GRAVITY_FILL_VERT = 1 << 5; - - /** Bitmask for a gravity which includes top */ - public static final int GRAVITY_TOP = 1 << 6; - - /** Bitmask for a gravity which includes bottom */ - public static final int GRAVITY_BOTTOM = 1 << 7; - - /** Bitmask for a gravity which includes start */ - public static final int GRAVITY_START = 1 << 8; - - /** Bitmask for a gravity which includes end */ - public static final int GRAVITY_END = 1 << 9; - - /** Bitmask for a gravity which includes any horizontal constraint */ - public static final int GRAVITY_HORIZ_MASK = GRAVITY_CENTER_HORIZ | GRAVITY_FILL_HORIZ - | GRAVITY_LEFT | GRAVITY_RIGHT | GRAVITY_START | GRAVITY_END; - - /** Bitmask for a gravity which any vertical constraint */ - public static final int GRAVITY_VERT_MASK = GRAVITY_CENTER_VERT | GRAVITY_FILL_VERT - | GRAVITY_TOP | GRAVITY_BOTTOM; - - /** - * Returns the gravity of the given element - * - * @param element the element to look up the gravity for - * @return a bit mask corresponding to the selected gravities - */ - public static int getGravity(Element element) { - String gravityString = element.getAttributeNS(ANDROID_URI, ATTR_LAYOUT_GRAVITY); - return getGravity(gravityString, GRAVITY_LEFT | GRAVITY_TOP); - } - - /** - * Returns the gravity bitmask for the given gravity string description - * - * @param gravityString the gravity string description - * @param defaultMask the default/initial bitmask to start with - * @return a bitmask corresponding to the gravity description - */ - public static int getGravity(String gravityString, int defaultMask) { - int gravity = defaultMask; - if (gravityString != null && !gravityString.isEmpty()) { - String[] anchors = gravityString.split("\\|"); //$NON-NLS-1$ - for (String anchor : anchors) { - if (GRAVITY_VALUE_CENTER.equals(anchor)) { - gravity = GRAVITY_CENTER_HORIZ | GRAVITY_CENTER_VERT; - } else if (GRAVITY_VALUE_FILL.equals(anchor)) { - gravity = GRAVITY_FILL_HORIZ | GRAVITY_FILL_VERT; - } else if (GRAVITY_VALUE_CENTER_VERTICAL.equals(anchor)) { - gravity = (gravity & GRAVITY_HORIZ_MASK) | GRAVITY_CENTER_VERT; - } else if (GRAVITY_VALUE_CENTER_HORIZONTAL.equals(anchor)) { - gravity = (gravity & GRAVITY_VERT_MASK) | GRAVITY_CENTER_HORIZ; - } else if (GRAVITY_VALUE_FILL_VERTICAL.equals(anchor)) { - gravity = (gravity & GRAVITY_HORIZ_MASK) | GRAVITY_FILL_VERT; - } else if (GRAVITY_VALUE_FILL_HORIZONTAL.equals(anchor)) { - gravity = (gravity & GRAVITY_VERT_MASK) | GRAVITY_FILL_HORIZ; - } else if (GRAVITY_VALUE_TOP.equals(anchor)) { - gravity = (gravity & GRAVITY_HORIZ_MASK) | GRAVITY_TOP; - } else if (GRAVITY_VALUE_BOTTOM.equals(anchor)) { - gravity = (gravity & GRAVITY_HORIZ_MASK) | GRAVITY_BOTTOM; - } else if (GRAVITY_VALUE_LEFT.equals(anchor)) { - gravity = (gravity & (GRAVITY_VERT_MASK|GRAVITY_START)) | GRAVITY_LEFT; - } else if (GRAVITY_VALUE_RIGHT.equals(anchor)) { - gravity = (gravity & (GRAVITY_VERT_MASK|GRAVITY_END)) | GRAVITY_RIGHT; - } else if (GRAVITY_VALUE_START.equals(anchor)) { - gravity = (gravity & (GRAVITY_VERT_MASK|GRAVITY_LEFT)) | GRAVITY_START; - } else if (GRAVITY_VALUE_END.equals(anchor)) { - gravity = (gravity & (GRAVITY_VERT_MASK|GRAVITY_RIGHT)) | GRAVITY_END; - } // else: "clip" not supported - } - } - - return gravity; - } - - /** - * Returns true if the given gravity bitmask is constrained horizontally - * - * @param gravity the gravity bitmask - * @return true if the given gravity bitmask is constrained horizontally - */ - public static boolean isConstrainedHorizontally(int gravity) { - return (gravity & GRAVITY_HORIZ_MASK) != 0; - } - - /** - * Returns true if the given gravity bitmask is constrained vertically - * - * @param gravity the gravity bitmask - * @return true if the given gravity bitmask is constrained vertically - */ - public static boolean isConstrainedVertically(int gravity) { - return (gravity & GRAVITY_VERT_MASK) != 0; - } - - /** - * Returns true if the given gravity bitmask is left aligned - * - * @param gravity the gravity bitmask - * @return true if the given gravity bitmask is left aligned - */ - public static boolean isLeftAligned(int gravity) { - return (gravity & (GRAVITY_LEFT|GRAVITY_START)) != 0; - } - - /** - * Returns true if the given gravity bitmask is top aligned - * - * @param gravity the gravity bitmask - * @return true if the given gravity bitmask is aligned - */ - public static boolean isTopAligned(int gravity) { - return (gravity & GRAVITY_TOP) != 0; - } - - /** Returns a gravity value string from the given gravity bitmask - * - * @param gravity the gravity bitmask - * @return the corresponding gravity string suitable as an XML attribute value - */ - public static String getGravity(int gravity) { - if (gravity == 0) { - return ""; - } - - if ((gravity & (GRAVITY_CENTER_HORIZ | GRAVITY_CENTER_VERT)) == - (GRAVITY_CENTER_HORIZ | GRAVITY_CENTER_VERT)) { - return GRAVITY_VALUE_CENTER; - } - - StringBuilder sb = new StringBuilder(30); - int horizontal = gravity & GRAVITY_HORIZ_MASK; - int vertical = gravity & GRAVITY_VERT_MASK; - - if ((horizontal & (GRAVITY_LEFT|GRAVITY_START)) != 0) { - if ((horizontal & GRAVITY_LEFT) != 0) { - sb.append(GRAVITY_VALUE_LEFT); - } - if ((horizontal & GRAVITY_START) != 0) { - if (sb.length() > 0) { - sb.append('|'); - } - sb.append(GRAVITY_VALUE_START); - } - } else if ((horizontal & (GRAVITY_RIGHT|GRAVITY_END)) != 0) { - if ((horizontal & GRAVITY_RIGHT) != 0) { - sb.append(GRAVITY_VALUE_RIGHT); - } - if ((horizontal & GRAVITY_END) != 0) { - if (sb.length() > 0) { - sb.append('|'); - } - sb.append(GRAVITY_VALUE_END); - } - } else if ((horizontal & GRAVITY_CENTER_HORIZ) != 0) { - sb.append(GRAVITY_VALUE_CENTER_HORIZONTAL); - } else if ((horizontal & GRAVITY_FILL_HORIZ) != 0) { - sb.append(GRAVITY_VALUE_FILL_HORIZONTAL); - } - - if (sb.length() > 0 && vertical != 0) { - sb.append('|'); - } - - if ((vertical & GRAVITY_TOP) != 0) { - sb.append(GRAVITY_VALUE_TOP); - } else if ((vertical & GRAVITY_BOTTOM) != 0) { - sb.append(GRAVITY_VALUE_BOTTOM); - } else if ((vertical & GRAVITY_CENTER_VERT) != 0) { - sb.append(GRAVITY_VALUE_CENTER_VERTICAL); - } else if ((vertical & GRAVITY_FILL_VERT) != 0) { - sb.append(GRAVITY_VALUE_FILL_VERTICAL); - } - - return sb.toString(); - } -} |