com.sencha.gxt.theme.base.client.slider.SliderVerticalBaseAppearance.java Source code

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Here is the source code for com.sencha.gxt.theme.base.client.slider.SliderVerticalBaseAppearance.java

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/**
 * Sencha GXT 4.0.0 - Sencha for GWT
 * Copyright (c) 2006-2015, Sencha Inc.
 *
 * licensing@sencha.com
 * http://www.sencha.com/products/gxt/license/
 *
 * ================================================================================
 * Open Source License
 * ================================================================================
 * This version of Sencha GXT is licensed under the terms of the Open Source GPL v3
 * license. You may use this license only if you are prepared to distribute and
 * share the source code of your application under the GPL v3 license:
 * http://www.gnu.org/licenses/gpl.html
 *
 * If you are NOT prepared to distribute and share the source code of your
 * application under the GPL v3 license, other commercial and oem licenses
 * are available for an alternate download of Sencha GXT.
 *
 * Please see the Sencha GXT Licensing page at:
 * http://www.sencha.com/products/gxt/license/
 *
 * For clarification or additional options, please contact:
 * licensing@sencha.com
 * ================================================================================
 *
 *
 * ================================================================================
 * Disclaimer
 * ================================================================================
 * THIS SOFTWARE IS DISTRIBUTED "AS-IS" WITHOUT ANY WARRANTIES, CONDITIONS AND
 * REPRESENTATIONS WHETHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE
 * IMPLIED WARRANTIES AND CONDITIONS OF MERCHANTABILITY, MERCHANTABLE QUALITY,
 * FITNESS FOR A PARTICULAR PURPOSE, DURABILITY, NON-INFRINGEMENT, PERFORMANCE AND
 * THOSE ARISING BY STATUTE OR FROM CUSTOM OR USAGE OF TRADE OR COURSE OF DEALING.
 * ================================================================================
 */
package com.sencha.gxt.theme.base.client.slider;

import com.google.gwt.cell.client.Cell.Context;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.Style.Unit;
import com.google.gwt.safecss.shared.SafeStyles;
import com.google.gwt.safecss.shared.SafeStylesUtils;
import com.google.gwt.safehtml.shared.SafeHtml;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.sencha.gxt.core.client.XTemplates;
import com.sencha.gxt.core.client.dom.XElement;
import com.sencha.gxt.core.client.util.Point;

public abstract class SliderVerticalBaseAppearance extends SliderBaseAppearance {

    public interface BaseSliderVerticalStyle extends SliderStyle {
    }

    public interface SliderVerticalResources extends SliderResources {

        @Override
        BaseSliderVerticalStyle style();

    }

    public interface SliderVerticalTemplate extends XTemplates {

        @XTemplate(source = "SliderVertical.html")
        SafeHtml template(SliderStyle style, SafeStyles offset, SafeStyles innerHeight);

    }

    protected final SliderVerticalTemplate template;

    private final SliderVerticalResources resources;

    public SliderVerticalBaseAppearance(SliderVerticalResources resources, SliderVerticalTemplate template) {
        super(resources);
        this.resources = resources;
        this.template = template;
    }

    @Override
    public int getClickedValue(Context context, Element parent, Point location) {
        Element innerEl = getInnerEl(parent);
        return location.getY() - XElement.as(innerEl).getTop(false);
    }

    @Override
    public int getSliderLength(XElement parent) {
        return getInnerEl(parent).getOffsetHeight();
    }

    @Override
    public boolean isVertical() {
        return true;
    }

    @Override
    public void render(double fractionalValue, int width, int height, SafeHtmlBuilder sb) {
        if (height == -1) {
            // default
            height = 200;
        }

        SafeStyles offsetStyles = createThumbStyles(fractionalValue, height);
        SafeStyles heightStyle = SafeStylesUtils.fromTrustedString("");

        // ends
        height -= getTrackPadding();
        heightStyle = SafeStylesUtils.fromTrustedString("height: " + height + "px;");

        sb.append(template.template(resources.style(), offsetStyles, heightStyle));
    }

    protected SafeStyles createThumbStyles(double fractionalValue, int height) {
        int halfThumb = getHalfThumbSize();
        int innerHeight = height;
        int offset = (int) (innerHeight - ((fractionalValue * innerHeight) - halfThumb));

        offset = innerHeight - offset;
        return SafeStylesUtils.fromTrustedString("bottom:" + offset + "px;");
    }

    protected int getHalfThumbSize() {
        return resources.style().halfThumb();
    }

    protected int getTrackPadding() {
        return 14;
    }

    @Override
    public void setThumbPosition(Element parent, int pos) {
        XElement thumbElement = XElement.as(getThumb(parent));
        thumbElement.getStyle().setBottom(pos, Unit.PX);
    }

}