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/*
* Copyright (C) 2010 The Android Open Source Project
*
* 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.android.camera.ui;
import static com.android.camera.ui.GLRootView.dpToPixel;
import android.content.Context;
import android.graphics.Color;
import android.graphics.Rect;
import android.view.animation.Transformation;
import com.android.camera.R;
import javax.microedition.khronos.opengles.GL11;
class GLOptionItem extends GLView {
private static final int FONT_COLOR = Color.WHITE;
private static final float FONT_SIZE = 18;
private static final int MINIMAL_WIDTH = 120;
private static final int MINIMAL_HEIGHT = 32;
private static final int NO_ICON_LEADING_SPACE = 10;
private static final int TEXT_LEFT_PADDING = 6;
private static final int TEXT_RIGHT_PADDING = 10;
private static final float ENABLED_ALPHA = 1f;
private static final float DISABLED_ALPHA = 0.3f;
private static final int HORIZONTAL_PADDINGS = 4;
private static final int VERTICAL_PADDINGS = 2;
private static ResourceTexture sCheckOn;
private static ResourceTexture sCheckOff;
private static int sNoIconLeadingSpace;
private static int sTextLeftPadding;
private static int sTextRightPadding;
private static int sMinimalWidth;
private static int sMinimalHeight;
private static float sFontSize;
private static int sHorizontalPaddings = -1;
private static int sVerticalPaddings;
private final ResourceTexture mIcon;
private final StringTexture mText;
private boolean mEnabled = true;
private ResourceTexture mCheckBox;
private static void initializeStaticVariables(Context context) {
if (sCheckOn != null) return;
sCheckOn = new ResourceTexture(context, R.drawable.ic_menuselect_on);
sCheckOff = new ResourceTexture(context, R.drawable.ic_menuselect_off);
sNoIconLeadingSpace = dpToPixel(context, NO_ICON_LEADING_SPACE);
sTextLeftPadding = dpToPixel(context, TEXT_LEFT_PADDING);
sTextRightPadding = dpToPixel(context, TEXT_RIGHT_PADDING);
sMinimalWidth = dpToPixel(context, MINIMAL_WIDTH);
sMinimalHeight = dpToPixel(context, MINIMAL_HEIGHT);
sHorizontalPaddings = dpToPixel(context, HORIZONTAL_PADDINGS);
sVerticalPaddings = dpToPixel(context, VERTICAL_PADDINGS);
sFontSize = dpToPixel(context, FONT_SIZE);
}
public GLOptionItem(Context context, int iconId, String title) {
initializeStaticVariables(context);
mIcon = iconId == 0 ? null : new ResourceTexture(context, iconId);
mText = StringTexture.newInstance(title, sFontSize, FONT_COLOR);
mCheckBox = sCheckOff;
setPaddings(sHorizontalPaddings,
sVerticalPaddings, sHorizontalPaddings, sVerticalPaddings);
}
@Override
protected void onMeasure(int widthSpec, int heightSpec) {
int width = mIcon == null ? sNoIconLeadingSpace : mIcon.getWidth();
width += mText.getWidth() + mCheckBox.getWidth();
width += sTextRightPadding + sTextLeftPadding;
int height = Math.max(Math.max(mIcon == null ? 0 : mIcon.getHeight(),
mText.getHeight()), mCheckBox.getHeight());
width = Math.max(sMinimalWidth, width);
height = Math.max(sMinimalHeight, height);
new MeasureHelper(this)
.setPreferredContentSize(width, height)
.measure(widthSpec, heightSpec);
}
@Override
protected void render(GLRootView root, GL11 gl) {
Rect p = mPaddings;
int width = getWidth() - p.left - p.right;
int height = getHeight() - p.top - p.bottom;
int xoffset = p.left;
Transformation trans = root.getTransformation();
float oldAlpha = trans.getAlpha();
trans.setAlpha(oldAlpha * (mEnabled ? ENABLED_ALPHA : DISABLED_ALPHA));
ResourceTexture icon = mIcon;
if (icon != null) {
icon.draw(root, xoffset,
p.top + (height - icon.getHeight()) / 2);
xoffset += icon.getWidth();
} else {
xoffset += sNoIconLeadingSpace;
}
StringTexture title = mText;
xoffset += sTextLeftPadding;
int yoffset = p.top + (height - title.getHeight()) / 2;
//TODO: cut the text if it is too long
title.draw(root, xoffset, yoffset);
ResourceTexture checkbox = mCheckBox;
yoffset = p.top + (height - checkbox.getHeight()) / 2;
checkbox.draw(root, width - checkbox.getWidth(), yoffset);
trans.setAlpha(oldAlpha);
}
public void setChecked(boolean checked) {
mCheckBox = checked ? sCheckOn : sCheckOff;
invalidate();
}
public void setEnabled(boolean enabled) {
if (mEnabled == enabled) return;
mEnabled = enabled;
invalidate();
}
}
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