Java tutorial
/* * 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. */ /** $Id$ */ package org.intellij.images.ui; import com.intellij.openapi.ui.Messages; import com.intellij.ui.JBColor; import com.intellij.util.ui.UIUtil; import icons.ImagesIcons; import org.intellij.images.ImagesBundle; import org.intellij.images.editor.ImageDocument; import org.jetbrains.annotations.NonNls; import javax.swing.*; import javax.swing.plaf.ComponentUI; import java.awt.*; import java.awt.image.BufferedImage; /** * UI for {@link ThumbnailComponent}. * * @author <a href="mailto:aefimov.box@gmail.com">Alexey Efimov</a> */ public class ThumbnailComponentUI extends ComponentUI { @NonNls private static final String DOTS = "..."; @NonNls private static final String THUMBNAIL_COMPONENT_ERROR_STRING = "ThumbnailComponent.errorString"; private static final Color LINE_COLOR = new Color(0x8E, 0xA8, 0xCE); private static final Color PNG_COLOR = new Color(0x80, 0x00, 0x80); private static final Color GIF_COLOR = new Color(0x00, 0x80, 0x00); private static final Color JPG_COLOR = new Color(0x80, 0x80, 0x00); private static final Color BMP_COLOR = new Color(0x00, 0x00, 0x80); private static final ThumbnailComponentUI ui = new ThumbnailComponentUI(); static { UIManager.getDefaults().put(THUMBNAIL_COMPONENT_ERROR_STRING, ImagesBundle.message("thumbnails.component.error.text")); } public void paint(Graphics g, JComponent c) { ThumbnailComponent tc = (ThumbnailComponent) c; if (tc != null) { paintBackground(g, tc); if (tc.isDirectory()) { paintDirectory(g, tc); } else { paintImageThumbnail(g, tc); } // File name paintFileName(g, tc); } } private void paintDirectory(Graphics g, ThumbnailComponent tc) { // Paint directory icon ImagesIcons.ThumbnailDirectory.paintIcon(tc, g, 5, 5); int imagesCount = tc.getImagesCount(); if (imagesCount > 0) { final String title = ImagesBundle.message("icons.count", imagesCount); Font font = getSmallFont(); FontMetrics fontMetrics = g.getFontMetrics(font); g.setColor(Color.BLACK); g.setFont(font); g.drawString(title, 5 + (ImagesIcons.ThumbnailDirectory.getIconWidth() - fontMetrics.stringWidth(title)) / 2, ImagesIcons.ThumbnailDirectory.getIconHeight() / 2 + fontMetrics.getAscent()); } } private void paintImageThumbnail(Graphics g, ThumbnailComponent tc) { // Paint blank ImagesIcons.ThumbnailBlank.paintIcon(tc, g, 5, 5); ImageComponent imageComponent = tc.getImageComponent(); ImageDocument document = imageComponent.getDocument(); BufferedImage image = document.getValue(); if (image != null) { paintImage(g, tc); } else { paintError(g, tc); } paintFileSize(g, tc); } private void paintBackground(Graphics g, ThumbnailComponent tc) { Dimension size = tc.getSize(); g.setColor(tc.getBackground()); g.fillRect(0, 0, size.width, size.height); } private void paintImage(Graphics g, ThumbnailComponent tc) { ImageComponent imageComponent = tc.getImageComponent(); BufferedImage image = imageComponent.getDocument().getValue(); int blankHeight = ImagesIcons.ThumbnailBlank.getIconHeight(); // Paint image info (and reduce height of text from available height) blankHeight -= paintImageCaps(g, image); // Paint image format (and reduce height of text from available height) blankHeight -= paintFormatText(tc, g); // Paint image paintThumbnail(g, imageComponent, blankHeight); } private int paintImageCaps(Graphics g, BufferedImage image) { String description = ImagesBundle.message("icon.dimensions", image.getWidth(), image.getHeight(), image.getColorModel().getPixelSize()); Font font = getSmallFont(); FontMetrics fontMetrics = g.getFontMetrics(font); g.setColor(Color.BLACK); g.setFont(font); g.drawString(description, 8, 7 + fontMetrics.getAscent()); return fontMetrics.getHeight(); } private int paintFormatText(ThumbnailComponent tc, Graphics g) { Font font = getSmallFont().deriveFont(Font.BOLD); FontMetrics fontMetrics = g.getFontMetrics(font); String format = tc.getFormat().toUpperCase(); int stringWidth = fontMetrics.stringWidth(format); int x = ImagesIcons.ThumbnailBlank.getIconWidth() - stringWidth + 2; int y = ImagesIcons.ThumbnailBlank.getIconHeight() - fontMetrics.getHeight() + 4; g.setColor(LINE_COLOR); g.drawLine(x - 3, y - 1, x + stringWidth + 1, y - 1); g.drawLine(x - 4, y, x - 4, y + fontMetrics.getHeight() - 1); g.setColor(getFormatColor(format)); g.setFont(font); g.drawString(format, x, y + fontMetrics.getAscent()); return fontMetrics.getHeight(); } private Color getFormatColor(String format) { if ("PNG".equals(format)) { return PNG_COLOR; } else if ("GIF".equals(format)) { return GIF_COLOR; } else if ("JPG".equals(format) || "JPEG".equals(format)) { return JPG_COLOR; } else if ("BMP".equals(format) || "WBMP".equals(format)) { return BMP_COLOR; } return Color.BLACK; } private void paintThumbnail(Graphics g, ImageComponent imageComponent, int blankHeight) { // Zoom image by available size int maxWidth = ImagesIcons.ThumbnailBlank.getIconWidth() - 10; int maxHeight = blankHeight - 10; BufferedImage image = imageComponent.getDocument().getValue(); int imageWidth = image.getWidth(); int imageHeight = image.getHeight(); if (imageWidth > maxWidth || imageHeight > maxHeight) { if (imageWidth > maxWidth) { double proportion = (double) maxWidth / (double) imageWidth; imageWidth = maxWidth; imageHeight = (int) ((double) imageHeight * proportion); } if (imageHeight > maxHeight) { double proportion = (double) maxHeight / (double) imageHeight; imageHeight = maxHeight; imageWidth = (int) ((double) imageWidth * proportion); } } imageComponent.setCanvasSize(imageWidth, imageHeight); Dimension size = imageComponent.getSize(); int x = 5 + (ImagesIcons.ThumbnailBlank.getIconWidth() - size.width) / 2; int y = 5 + (ImagesIcons.ThumbnailBlank.getIconHeight() - size.height) / 2; imageComponent.paint(g.create(x, y, size.width, size.height)); } private void paintFileName(Graphics g, ThumbnailComponent tc) { Font font = UIUtil.getLabelFont(); FontMetrics fontMetrics = g.getFontMetrics(font); g.setFont(font); g.setColor(tc.getForeground()); String fileName = tc.getFileName(); String title = fileName; while (fontMetrics.stringWidth(title) > ImagesIcons.ThumbnailBlank.getIconWidth() - 8) { title = title.substring(0, title.length() - 1); } if (fileName.equals(title)) { // Center g.drawString(fileName, 6 + (ImagesIcons.ThumbnailBlank.getIconWidth() - 2 - fontMetrics.stringWidth(title)) / 2, ImagesIcons.ThumbnailBlank.getIconHeight() + 8 + fontMetrics.getAscent()); } else { int dotsWidth = fontMetrics.stringWidth(DOTS); while (fontMetrics.stringWidth(title) > ImagesIcons.ThumbnailBlank.getIconWidth() - 8 - dotsWidth) { title = title.substring(0, title.length() - 1); } g.drawString(title + DOTS, 6, ImagesIcons.ThumbnailBlank.getIconHeight() + 8 + fontMetrics.getAscent()); } } private void paintFileSize(Graphics g, ThumbnailComponent tc) { Font font = getSmallFont(); FontMetrics fontMetrics = g.getFontMetrics(font); g.setColor(Color.BLACK); g.setFont(font); g.drawString(tc.getFileSizeText(), 8, ImagesIcons.ThumbnailBlank.getIconHeight() + 4 - fontMetrics.getHeight() + fontMetrics.getAscent()); } private void paintError(Graphics g, ThumbnailComponent tc) { Font font = getSmallFont(); FontMetrics fontMetrics = g.getFontMetrics(font); Messages.getErrorIcon().paintIcon(tc, g, 5 + (ImagesIcons.ThumbnailBlank.getIconWidth() - Messages.getErrorIcon().getIconWidth()) / 2, 5 + (ImagesIcons.ThumbnailBlank.getIconHeight() - Messages.getErrorIcon().getIconHeight()) / 2); // Error String error = getSubmnailComponentErrorString(); g.setColor(JBColor.RED); g.setFont(font); g.drawString(error, 8, 8 + fontMetrics.getAscent()); } private String getSubmnailComponentErrorString() { return UIManager.getString(THUMBNAIL_COMPONENT_ERROR_STRING); } private static Font getSmallFont() { Font labelFont = UIUtil.getLabelFont(); return labelFont.deriveFont(labelFont.getSize2D() - 2.0f); } public Dimension getPreferredSize(JComponent c) { Font labelFont = UIUtil.getLabelFont(); FontMetrics fontMetrics = c.getFontMetrics(labelFont); return new Dimension(ImagesIcons.ThumbnailBlank.getIconWidth() + 10, ImagesIcons.ThumbnailBlank.getIconHeight() + fontMetrics.getHeight() + 15); } @SuppressWarnings({ "UnusedDeclaration" }) public static ComponentUI createUI(JComponent c) { return ui; } }