android/src/com/intellij/android/designer/designSurface/layout/flow/FlowStaticDecorator.java

/*
 * Copyright 2000-2012 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
 *
 * 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.intellij.android.designer.designSurface.layout.flow;

import com.intellij.android.designer.designSurface.graphics.DesignerGraphics;
import com.intellij.android.designer.designSurface.graphics.DrawingStyle;
import com.intellij.android.designer.model.RadViewComponent;
import com.intellij.designer.designSurface.DecorationLayer;
import com.intellij.designer.designSurface.StaticDecorator;
import com.intellij.designer.model.RadComponent;

import java.awt.*;

/**
 * @author Alexander Lobas
 */
public abstract class FlowStaticDecorator extends StaticDecorator {
  public FlowStaticDecorator(RadComponent component) {
    super(component);
  }

  @Override
  protected void paint(DecorationLayer layer, Graphics2D g, RadComponent component) {
    Rectangle bounds = component.getBounds(layer);

    DesignerGraphics.useStroke(DrawingStyle.GRID, g);
    g.drawRect(bounds.x, bounds.y, bounds.width, bounds.height);

    if (isHorizontal()) {
      for (RadComponent child : component.getChildren()) {
        Rectangle childBounds = child.getBounds(layer);
        int marginRight = ((RadViewComponent)child).getMargins(layer).right;
        int x = childBounds.x + childBounds.width + marginRight;
        g.drawLine(x, bounds.y, x, bounds.y + bounds.height);
      }
    }
    else {
      for (RadComponent child : component.getChildren()) {
        Rectangle childBounds = child.getBounds(layer);
        int marginBottom = ((RadViewComponent)child).getMargins(layer).bottom;
        int y = childBounds.y + childBounds.height + marginBottom;
        g.drawLine(bounds.x, y, bounds.x + bounds.width, y);
      }
    }
  }

  protected abstract boolean isHorizontal();
}