Java tutorial
/** * This file is part of mycollab-web. * * mycollab-web is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * mycollab-web is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with mycollab-web. If not, see <http://www.gnu.org/licenses/>. */ package com.mycollab.module.user.accountsettings.customize.view; import com.mycollab.common.i18n.FileI18nEnum; import com.mycollab.common.i18n.GenericI18Enum; import com.mycollab.common.i18n.ShellI18nEnum; import com.mycollab.core.MyCollabException; import com.mycollab.core.UserInvalidInputException; import com.mycollab.core.utils.ImageUtil; import com.mycollab.eventmanager.EventBusFactory; import com.mycollab.module.file.service.AccountLogoService; import com.mycollab.module.user.accountsettings.view.events.SettingEvent; import com.mycollab.spring.AppContextUtil; import com.mycollab.vaadin.MyCollabUI; import com.mycollab.vaadin.UserUIContext; import com.mycollab.vaadin.addon.webcomponents.CropField; import com.mycollab.vaadin.addon.webcomponents.client.VCropSelection; import com.mycollab.vaadin.ui.AccountAssetsResolver; import com.mycollab.vaadin.ui.ELabel; import com.mycollab.vaadin.web.ui.ByteArrayImageResource; import com.mycollab.vaadin.web.ui.WebThemes; import com.vaadin.event.ShortcutAction; import com.vaadin.server.FontAwesome; import com.vaadin.server.Page; import com.vaadin.server.Resource; import com.vaadin.shared.ui.MarginInfo; import com.vaadin.ui.Alignment; import com.vaadin.ui.CssLayout; import com.vaadin.ui.Embedded; import com.vaadin.ui.VerticalLayout; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.vaadin.viritin.button.MButton; import org.vaadin.viritin.layouts.MHorizontalLayout; import org.vaadin.viritin.layouts.MVerticalLayout; import org.vaadin.viritin.layouts.MWindow; import javax.imageio.ImageIO; import java.awt.image.BufferedImage; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.IOException; /** * @author MyCollab Ltd. * @since 4.1 */ public class LogoEditWindow extends MWindow { private static final long serialVersionUID = -5294741083557671011L; private static final Logger LOG = LoggerFactory.getLogger(LogoEditWindow.class); private MVerticalLayout content; private BufferedImage originalImage; private Embedded previewImage; private byte[] scaleImageData; public LogoEditWindow(byte[] imageData) { super(UserUIContext.getMessage(FileI18nEnum.ACTION_CHANGE_LOGO)); this.withModal(true).withResizable(false).withWidth("800px").withHeight("800px"); content = new MVerticalLayout(); this.setContent(content); editPhoto(imageData); } private void editPhoto(byte[] imageData) { try { originalImage = ImageIO.read(new ByteArrayInputStream(imageData)); } catch (IOException e) { throw new UserInvalidInputException("Invalid image type"); } originalImage = ImageUtil.scaleImage(originalImage, 650, 650); MHorizontalLayout previewBox = new MHorizontalLayout().withMargin(new MarginInfo(false, true, true, false)) .withFullWidth(); final String logoPath = MyCollabUI.getBillingAccount().getLogopath(); Resource defaultPhoto = AccountAssetsResolver.createLogoResource(logoPath, 150); previewImage = new Embedded(null, defaultPhoto); previewImage.setWidth("100px"); previewBox.addComponent(previewImage); previewBox.setComponentAlignment(previewImage, Alignment.TOP_LEFT); MVerticalLayout previewBoxRight = new MVerticalLayout().withSpacing(false) .withMargin(new MarginInfo(false, true, false, true)); previewBoxRight .addComponent(ELabel.html(UserUIContext.getMessage(ShellI18nEnum.OPT_IMAGE_EDIT_INSTRUCTION))); MButton cancelBtn = new MButton(UserUIContext.getMessage(GenericI18Enum.BUTTON_CANCEL), clickEvent -> EventBusFactory.getInstance() .post(new SettingEvent.GotoGeneralSetting(LogoEditWindow.this, null))) .withStyleName(WebThemes.BUTTON_OPTION); MButton acceptBtn = new MButton(UserUIContext.getMessage(GenericI18Enum.BUTTON_ACCEPT), clickEvent -> { if (scaleImageData != null && scaleImageData.length > 0) { try { BufferedImage image = ImageIO.read(new ByteArrayInputStream(scaleImageData)); AccountLogoService accountLogoService = AppContextUtil.getSpringBean(AccountLogoService.class); accountLogoService.upload(UserUIContext.getUsername(), image, MyCollabUI.getAccountId()); Page.getCurrent().getJavaScript().execute("window.location.reload();"); } catch (IOException e) { throw new MyCollabException("Error when saving account logo", e); } } }).withStyleName(WebThemes.BUTTON_ACTION).withIcon(FontAwesome.SAVE) .withClickShortcut(ShortcutAction.KeyCode.ENTER); MHorizontalLayout controlBtns = new MHorizontalLayout(acceptBtn, cancelBtn); previewBoxRight.with(controlBtns).withAlign(controlBtns, Alignment.TOP_LEFT); previewBox.with(previewBoxRight).expand(previewBoxRight); content.addComponent(previewBox); CssLayout cropBox = new CssLayout(); cropBox.setWidth("100%"); VerticalLayout currentPhotoBox = new VerticalLayout(); Resource resource = new ByteArrayImageResource(ImageUtil.convertImageToByteArray(originalImage), "image/png"); CropField cropField = new CropField(resource); cropField.setImmediate(true); cropField.setSelectionAspectRatio(150 / 28); cropField.addValueChangeListener(valueChangeEvent -> { VCropSelection newSelection = (VCropSelection) valueChangeEvent.getProperty().getValue(); int x1 = newSelection.getXTopLeft(); int y1 = newSelection.getYTopLeft(); int x2 = newSelection.getXBottomRight(); int y2 = newSelection.getYBottomRight(); if (x2 > x1 && y2 > y1) { BufferedImage subImage = originalImage.getSubimage(x1, y1, (x2 - x1), (y2 - y1)); ByteArrayOutputStream outStream = new ByteArrayOutputStream(); try { ImageIO.write(subImage, "png", outStream); scaleImageData = outStream.toByteArray(); displayPreviewImage(); } catch (IOException e) { LOG.error("Error while scale image: ", e); } } }); currentPhotoBox.setWidth("650px"); currentPhotoBox.setHeight("650px"); currentPhotoBox.addComponent(cropField); cropBox.addComponent(currentPhotoBox); content.with(previewBox, ELabel.hr(), cropBox); } private void displayPreviewImage() { if (scaleImageData != null && scaleImageData.length > 0) { ByteArrayImageResource previewResource = new ByteArrayImageResource(scaleImageData, "image/png"); previewImage.setSource(previewResource); } } }