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/*
* Copyright (C) 2010 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.adt.gscripts;
/**
* An {@link IViewRule} for android.widget.AbsoluteLayout and all its derived classes.
*/
public class AndroidWidgetAbsoluteLayoutRule extends BaseLayout {
// ==== Drag'n'drop support ====
// The AbsoluteLayout accepts any drag'n'drop anywhere on its surface.
DropFeedback onDropEnter(INode targetNode, IDragElement[] elements) {
if (elements.length == 0) {
return null;
}
return new DropFeedback(
[ "p": null ], // Point: last cursor position
{
gc, node, feedback ->
// Paint closure for the AbsoluteLayout.
// This is called by the canvas when a draw is needed.
drawFeedback(gc, node, elements, feedback);
});
}
void drawFeedback(IGraphics gc,
INode targetNode,
IDragElement[] elements,
DropFeedback feedback) {
Rect b = targetNode.getBounds();
if (!b.isValid()) {
return;
}
// Highlight the receiver
gc.setForeground(gc.registerColor(0x00FFFF00));
gc.setLineStyle(IGraphics.LineStyle.LINE_SOLID);
gc.setLineWidth(2);
gc.drawRect(b);
// Get the drop point
Point p = feedback.userData.p;
if (p == null) {
return;
}
int x = p.x;
int y = p.y;
Rect be = elements[0].getBounds();
if (be.isValid()) {
// At least the first element has a bound. Draw rectangles
// for all dropped elements with valid bounds, offset at
// the drop point.
int offsetX = x - be.x;
int offsetY = y - be.y;
elements.each {
drawElement(gc, it, offsetX, offsetY);
}
} else {
// We don't have bounds for new elements. In this case
// just draw a mark at the drop point.
gc.drawLine(x - 10, y - 10, x + 10, y + 10);
gc.drawLine(x + 10, y - 10, x - 10, y + 10);
gc.drawOval(x - 10, y - 10, x + 10, y + 10);
}
}
DropFeedback onDropMove(INode targetNode,
IDragElement[] elements,
DropFeedback feedback,
Point p) {
// Update the data used by the DropFeedback.paintClosure above.
feedback.userData.p = p;
feedback.requestPaint = true;
return feedback;
}
void onDropLeave(INode targetNode, IDragElement[] elements, DropFeedback feedback) {
// Nothing to do.
}
void onDropped(INode targetNode,
IDragElement[] elements,
DropFeedback feedback,
Point p) {
Rect b = targetNode.getBounds();
if (!b.isValid()) {
return;
}
int x = p.x - b.x;
int y = p.y - b.y;
// Collect IDs from dropped elements and remap them to new IDs
// if this is a copy or from a different canvas.
def idMap = getDropIdMap(targetNode, elements, feedback.isCopy || !feedback.sameCanvas);
targetNode.editXml("Add elements to AbsoluteLayout") {
boolean first = true;
Point offset = null;
// Now write the new elements.
elements.each { element ->
String fqcn = element.getFqcn();
Rect be = element.getBounds();
INode newChild = targetNode.appendChild(fqcn);
// Copy all the attributes, modifying them as needed.
def attrFilter = getLayoutAttrFilter();
addAttributes(newChild, element, idMap) {
uri, name, value ->
// TODO need a better way to exclude other layout attributes dynamically
if (uri == ANDROID_URI && name in attrFilter) {
return false; // don't set these attributes
} else {
return value;
}
};
if (first) {
first = false;
if (be.isValid()) {
offset = new Point(x - be.x, y - be.y);
}
} else if (offset != null && be.isValid()) {
x = offset.x + be.x;
y = offset.y + be.y;
} else {
x += 10;
y += be.isValid() ? be.h : 10;
}
newChild.setAttribute(ANDROID_URI, "layout_x", "${x}dip");
newChild.setAttribute(ANDROID_URI, "layout_y", "${y}dip");
addInnerElements(newChild, element, idMap);
}
}
}
}
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