1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Eclipse Public License, Version 1.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.eclipse.org/org/documents/epl-v10.php 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.ide.common.layout; 18 19 import static com.android.SdkConstants.VALUE_N_DP; 20 import static com.android.SdkConstants.VALUE_WRAP_CONTENT; 21 22 import com.android.ide.common.api.INode; 23 import com.android.ide.common.api.Rect; 24 import com.android.ide.common.api.Segment; 25 import com.android.ide.common.api.SegmentType; 26 27 /** State held during resizing operations */ 28 class ResizeState { 29 /** 30 * The associated rule 31 */ 32 private final BaseLayoutRule mRule; 33 34 /** 35 * The node being resized 36 */ 37 public final INode node; 38 39 /** 40 * The layout containing the resized node 41 */ 42 public final INode layout; 43 44 /** The proposed resized bounds of the node */ 45 public Rect bounds; 46 47 /** The preferred wrap_content bounds of the node */ 48 public Rect wrapBounds; 49 50 /** The suggested horizontal fill_parent guideline position */ 51 public Segment horizontalFillSegment; 52 53 /** The suggested vertical fill_parent guideline position */ 54 public Segment verticalFillSegment; 55 56 /** The type of horizontal edge being resized, or null */ 57 public SegmentType horizontalEdgeType; 58 59 /** The type of vertical edge being resized, or null */ 60 public SegmentType verticalEdgeType; 61 62 /** Whether the user has snapped to the wrap_content width */ 63 public boolean wrapWidth; 64 65 /** Whether the user has snapped to the wrap_content height */ 66 public boolean wrapHeight; 67 68 /** Whether the user has snapped to the match_parent width */ 69 public boolean fillWidth; 70 71 /** Whether the user has snapped to the match_parent height */ 72 public boolean fillHeight; 73 74 /** Custom field for use by subclasses */ 75 public Object clientData; 76 77 /** Keyboard mask */ 78 public int modifierMask; 79 80 /** 81 * The actual view object for the layout containing the resizing operation, 82 * or null if not known 83 */ 84 public Object layoutView; 85 86 /** 87 * Constructs a new {@link ResizeState} 88 * 89 * @param rule the associated rule 90 * @param layout the parent layout containing the resized node 91 * @param layoutView the actual View instance for the layout, or null if not known 92 * @param node the node being resized 93 */ ResizeState(BaseLayoutRule rule, INode layout, Object layoutView, INode node)94 ResizeState(BaseLayoutRule rule, INode layout, Object layoutView, INode node) { 95 mRule = rule; 96 97 this.layout = layout; 98 this.node = node; 99 this.layoutView = layoutView; 100 } 101 102 /** 103 * Returns the width attribute to be set to match the new bounds 104 * 105 * @return the width string, never null 106 */ getWidthAttribute()107 public String getWidthAttribute() { 108 if (wrapWidth) { 109 return VALUE_WRAP_CONTENT; 110 } else if (fillWidth) { 111 return mRule.getFillParentValueName(); 112 } else { 113 return String.format(VALUE_N_DP, mRule.mRulesEngine.pxToDp(bounds.w)); 114 } 115 } 116 117 /** 118 * Returns the height attribute to be set to match the new bounds 119 * 120 * @return the height string, never null 121 */ getHeightAttribute()122 public String getHeightAttribute() { 123 if (wrapHeight) { 124 return VALUE_WRAP_CONTENT; 125 } else if (fillHeight) { 126 return mRule.getFillParentValueName(); 127 } else { 128 return String.format(VALUE_N_DP, mRule.mRulesEngine.pxToDp(bounds.h)); 129 } 130 } 131 } 132