src/be/nikiroo/fanfix_swing/gui/book/BookCoverImager.java

   1 package be.nikiroo.fanfix_swing.gui.book;
   2
   3 import java.awt.Color;
   4 import java.awt.Graphics;
   5 import java.awt.Graphics2D;
   6 import java.awt.Polygon;
   7 import java.awt.Rectangle;
   8 import java.awt.image.BufferedImage;
   9 import java.io.ByteArrayInputStream;
  10 import java.io.ByteArrayOutputStream;
  11 import java.io.IOException;
  12 import java.io.InputStream;
  13 import java.net.MalformedURLException;
  14
  15 import javax.imageio.ImageIO;
  16
  17 import be.nikiroo.fanfix.Instance;
  18 import be.nikiroo.fanfix.data.MetaData;
  19 import be.nikiroo.fanfix.library.BasicLibrary;
  20 import be.nikiroo.fanfix.reader.ui.GuiReaderBookInfo;
  21 import be.nikiroo.utils.Image;
  22 import be.nikiroo.utils.ui.ImageUtilsAwt;
  23 import be.nikiroo.utils.ui.UIUtils;
  24
  25 /**
  26  * This class can create a cover icon ready to use for the graphical
  27  * application.
  28  *
  29  * @author niki
  30  */
  31 class BookCoverImager {
  32         // TODO: export some of the configuration options?
  33         static final int COVER_WIDTH = 100;
  34         static final int COVER_HEIGHT = 150;
  35         static final int SPINE_WIDTH = 5;
  36         static final int SPINE_HEIGHT = 5;
  37         static final int HOFFSET = 20;
  38         static final Color SPINE_COLOR_BOTTOM = new Color(180, 180, 180);
  39         static final Color SPINE_COLOR_RIGHT = new Color(100, 100, 100);
  40         static final Color BORDER = Color.black;
  41
  42         public static final int TEXT_HEIGHT = 50;
  43         public static final int TEXT_WIDTH = COVER_WIDTH + 40;
  44
  45         //
  46
  47         static public Color getBackground(boolean enabled, boolean selected, boolean hovered) {
  48                 Color color = new Color(255, 255, 255, 0);
  49                 if (!enabled) {
  50                 } else if (selected && !hovered) {
  51                         color = new Color(80, 80, 100, 40);
  52                 } else if (!selected && hovered) {
  53                         color = new Color(230, 230, 255, 100);
  54                 } else if (selected && hovered) {
  55                         color = new Color(200, 200, 255, 100);
  56                 }
  57
  58                 return color;
  59         }
  60
  61         /**
  62          * Draw a partially transparent overlay if needed depending upon the selection
  63          * and mouse-hover states on top of the normal component, as well as a possible
  64          * "cached" icon if the item is cached.
  65          *
  66          * @param g        the {@link Graphics} to paint onto
  67          * @param enabled  draw an enabled overlay
  68          * @param selected draw a selected overlay
  69          * @param hovered  draw a hovered overlay
  70          * @param cached   draw a non-cached overlay if needed
  71          */
  72         static public void paintOverlay(Graphics g, boolean enabled, boolean selected, boolean hovered, boolean cached) {
  73                 Rectangle clip = g.getClipBounds();
  74                 if (clip.getWidth() <= 0 || clip.getHeight() <= 0) {
  75                         return;
  76                 }
  77
  78                 int h = COVER_HEIGHT;
  79                 int w = COVER_WIDTH;
  80                 int xOffset = (TEXT_WIDTH - COVER_WIDTH) - 1;
  81                 int yOffset = HOFFSET;
  82
  83                 if (BORDER != null) {
  84                         if (BORDER != null) {
  85                                 g.setColor(BORDER);
  86                                 g.drawRect(xOffset, yOffset, COVER_WIDTH, COVER_HEIGHT);
  87                         }
  88
  89                         xOffset++;
  90                         yOffset++;
  91                 }
  92
  93                 int[] xs = new int[] { xOffset, xOffset + SPINE_WIDTH, xOffset + w + SPINE_WIDTH, xOffset + w };
  94                 int[] ys = new int[] { yOffset + h, yOffset + h + SPINE_HEIGHT, yOffset + h + SPINE_HEIGHT, yOffset + h };
  95                 g.setColor(SPINE_COLOR_BOTTOM);
  96                 g.fillPolygon(new Polygon(xs, ys, xs.length));
  97                 xs = new int[] { xOffset + w, xOffset + w + SPINE_WIDTH, xOffset + w + SPINE_WIDTH, xOffset + w };
  98                 ys = new int[] { yOffset, yOffset + SPINE_HEIGHT, yOffset + h + SPINE_HEIGHT, yOffset + h };
  99                 g.setColor(SPINE_COLOR_RIGHT);
 100                 g.fillPolygon(new Polygon(xs, ys, xs.length));
 101
 102                 Color color = getBackground(enabled, selected, hovered);
 103
 104                 g.setColor(color);
 105                 g.fillRect(clip.x, clip.y, clip.width, clip.height);
 106
 107                 if (!cached) {
 108                         UIUtils.drawEllipse3D(g, new Color(0, 80, 220), COVER_WIDTH + HOFFSET + 30, 10, 20, 20);
 109                 }
 110         }
 111
 112         /**
 113          * Generate a cover icon based upon the given {@link MetaData}.
 114          *
 115          * @param lib  the library the meta comes from
 116          * @param meta the {@link MetaData}
 117          *
 118          * @return the image
 119          */
 120         static public java.awt.Image generateCoverImage(BasicLibrary lib, MetaData meta) {
 121                 return generateCoverImage(lib, BookInfo.fromMeta(lib, meta));
 122         }
 123
 124         /**
 125          * The width of a cover image.
 126          *
 127          * @return the width
 128          */
 129         static public int getCoverWidth() {
 130                 return SPINE_WIDTH + COVER_WIDTH;
 131         }
 132
 133         /**
 134          * The height of a cover image.
 135          *
 136          * @return the height
 137          */
 138         static public int getCoverHeight() {
 139                 return COVER_HEIGHT + HOFFSET;
 140         }
 141
 142         /**
 143          * Generate a cover icon based upon the given {@link GuiReaderBookInfo}.
 144          *
 145          * @param lib  the library the meta comes from (can be NULL)
 146          * @param info the {@link GuiReaderBookInfo}
 147          *
 148          * @return the image
 149          */
 150         static public java.awt.Image generateCoverImage(BasicLibrary lib, BookInfo info) {
 151                 BufferedImage resizedImage = null;
 152                 String id = getIconId(info);
 153
 154                 InputStream in = Instance.getInstance().getCache().getFromCache(id);
 155                 if (in != null) {
 156                         try {
 157                                 resizedImage = ImageUtilsAwt.fromImage(new Image(in));
 158                                 in.close();
 159                                 in = null;
 160                         } catch (IOException e) {
 161                                 Instance.getInstance().getTraceHandler().error(e);
 162                         }
 163                 }
 164
 165                 if (resizedImage == null) {
 166                         try {
 167                                 Image cover = null;
 168                                 if (info != null) {
 169                                         cover = info.getBaseImage(lib);
 170                                 }
 171
 172                                 resizedImage = new BufferedImage(getCoverWidth(), getCoverHeight(), BufferedImage.TYPE_4BYTE_ABGR);
 173
 174                                 Graphics2D g = resizedImage.createGraphics();
 175                                 try {
 176                                         g.setColor(Color.white);
 177                                         g.fillRect(0, HOFFSET, COVER_WIDTH, COVER_HEIGHT);
 178
 179                                         if (cover != null) {
 180                                                 BufferedImage coverb = ImageUtilsAwt.fromImage(cover);
 181                                                 g.drawImage(coverb, 0, HOFFSET, COVER_WIDTH, COVER_HEIGHT, null);
 182                                         } else {
 183                                                 g.setColor(Color.black);
 184                                                 g.drawLine(0, HOFFSET, COVER_WIDTH, HOFFSET + COVER_HEIGHT);
 185                                                 g.drawLine(COVER_WIDTH, HOFFSET, 0, HOFFSET + COVER_HEIGHT);
 186                                         }
 187                                 } finally {
 188                                         g.dispose();
 189                                 }
 190
 191                                 // Only save image with a cover, not the X thing
 192                                 if (id != null && cover != null) {
 193                                         ByteArrayOutputStream out = new ByteArrayOutputStream();
 194                                         ImageIO.write(resizedImage, "png", out);
 195                                         byte[] imageBytes = out.toByteArray();
 196                                         in = new ByteArrayInputStream(imageBytes);
 197                                         Instance.getInstance().getCache().addToCache(in, id);
 198                                         in.close();
 199                                         in = null;
 200                                 }
 201                         } catch (MalformedURLException e) {
 202                                 Instance.getInstance().getTraceHandler().error(e);
 203                         } catch (IOException e) {
 204                                 Instance.getInstance().getTraceHandler().error(e);
 205                         }
 206                 }
 207
 208                 return resizedImage;
 209         }
 210
 211         /**
 212          * Manually clear the icon set for this item.
 213          *
 214          * @param info the info about the story or source/type or author
 215          */
 216         static public void clearIcon(BookInfo info) {
 217                 String id = getIconId(info);
 218                 Instance.getInstance().getCache().removeFromCache(id);
 219         }
 220
 221         /**
 222          * Get a unique ID from this {@link GuiReaderBookInfo} (note that it can be a
 223          * story, a fake item for a source/type or a fake item for an author).
 224          *
 225          * @param info the info or NULL for a generic (non unique!) ID
 226          * @return the unique ID
 227          */
 228         static private String getIconId(BookInfo info) {
 229                 return (info == null ? "" : info.getId() + ".") + "book-thumb_" + SPINE_WIDTH + "x" + COVER_WIDTH + "+"
 230                                 + SPINE_HEIGHT + "+" + COVER_HEIGHT + "@" + HOFFSET;
 231         }
 232 }