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 Color UNCACHED_ICON_COLOR = Color.green.darker();
  43                         // new Color(0, 80, 220);
  44
  45         public static final int TEXT_HEIGHT = 50;
  46         public static final int TEXT_WIDTH = COVER_WIDTH + 40;
  47
  48         //
  49
  50         static public Color getBackground(boolean enabled, boolean selected, boolean hovered) {
  51                 Color color = new Color(255, 255, 255, 0);
  52                 if (!enabled) {
  53                 } else if (selected && !hovered) {
  54                         color = new Color(80, 80, 100, 40);
  55                 } else if (!selected && hovered) {
  56                         color = new Color(230, 230, 255, 100);
  57                 } else if (selected && hovered) {
  58                         color = new Color(200, 200, 255, 100);
  59                 }
  60
  61                 return color;
  62         }
  63
  64         /**
  65          * Draw a partially transparent overlay if needed depending upon the selection
  66          * and mouse-hover states on top of the normal component, as well as a possible
  67          * "cached" icon if the item is cached.
  68          *
  69          * @param g        the {@link Graphics} to paint onto
  70          * @param enabled  draw an enabled overlay
  71          * @param selected draw a selected overlay
  72          * @param hovered  draw a hovered overlay
  73          * @param cached   draw a non-cached overlay if needed
  74          */
  75         static public void paintOverlay(Graphics g, boolean enabled, boolean selected, boolean hovered, boolean cached) {
  76                 Rectangle clip = g.getClipBounds();
  77                 if (clip.getWidth() <= 0 || clip.getHeight() <= 0) {
  78                         return;
  79                 }
  80
  81                 int h = COVER_HEIGHT;
  82                 int w = COVER_WIDTH;
  83                 int xOffset = (TEXT_WIDTH - COVER_WIDTH) - 1;
  84                 int yOffset = HOFFSET;
  85
  86                 if (BORDER != null) {
  87                         if (BORDER != null) {
  88                                 g.setColor(BORDER);
  89                                 g.drawRect(xOffset, yOffset, COVER_WIDTH, COVER_HEIGHT);
  90                         }
  91
  92                         xOffset++;
  93                         yOffset++;
  94                 }
  95
  96                 int[] xs = new int[] { xOffset, xOffset + SPINE_WIDTH, xOffset + w + SPINE_WIDTH, xOffset + w };
  97                 int[] ys = new int[] { yOffset + h, yOffset + h + SPINE_HEIGHT, yOffset + h + SPINE_HEIGHT, yOffset + h };
  98                 g.setColor(SPINE_COLOR_BOTTOM);
  99                 g.fillPolygon(new Polygon(xs, ys, xs.length));
 100                 xs = new int[] { xOffset + w, xOffset + w + SPINE_WIDTH, xOffset + w + SPINE_WIDTH, xOffset + w };
 101                 ys = new int[] { yOffset, yOffset + SPINE_HEIGHT, yOffset + h + SPINE_HEIGHT, yOffset + h };
 102                 g.setColor(SPINE_COLOR_RIGHT);
 103                 g.fillPolygon(new Polygon(xs, ys, xs.length));
 104
 105                 Color color = getBackground(enabled, selected, hovered);
 106
 107                 g.setColor(color);
 108                 g.fillRect(clip.x, clip.y, clip.width, clip.height);
 109
 110                 UIUtils.drawEllipse3D(g, UNCACHED_ICON_COLOR, COVER_WIDTH + HOFFSET + 30, 10, 20, 20, cached);
 111         }
 112
 113         /**
 114          * Generate a cover icon based upon the given {@link MetaData}.
 115          *
 116          * @param lib  the library the meta comes from
 117          * @param meta the {@link MetaData}
 118          *
 119          * @return the image
 120          */
 121         static public java.awt.Image generateCoverImage(BasicLibrary lib, MetaData meta) {
 122                 return generateCoverImage(lib, BookInfo.fromMeta(lib, meta));
 123         }
 124
 125         /**
 126          * The width of a cover image.
 127          *
 128          * @return the width
 129          */
 130         static public int getCoverWidth() {
 131                 return SPINE_WIDTH + COVER_WIDTH;
 132         }
 133
 134         /**
 135          * The height of a cover image.
 136          *
 137          * @return the height
 138          */
 139         static public int getCoverHeight() {
 140                 return COVER_HEIGHT + HOFFSET;
 141         }
 142
 143         /**
 144          * Generate a cover icon based upon the given {@link GuiReaderBookInfo}.
 145          *
 146          * @param lib  the library the meta comes from (can be NULL)
 147          * @param info the {@link GuiReaderBookInfo}
 148          *
 149          * @return the image
 150          */
 151         static public java.awt.Image generateCoverImage(BasicLibrary lib, BookInfo info) {
 152                 BufferedImage resizedImage = null;
 153                 String id = getIconId(info);
 154
 155                 InputStream in = Instance.getInstance().getCache().getFromCache(id);
 156                 if (in != null) {
 157                         try {
 158                                 resizedImage = ImageUtilsAwt.fromImage(new Image(in));
 159                                 in.close();
 160                                 in = null;
 161                         } catch (IOException e) {
 162                                 Instance.getInstance().getTraceHandler().error(e);
 163                         }
 164                 }
 165
 166                 if (resizedImage == null) {
 167                         try {
 168                                 Image cover = null;
 169                                 if (info != null) {
 170                                         cover = info.getBaseImage(lib);
 171                                 }
 172
 173                                 resizedImage = new BufferedImage(getCoverWidth(), getCoverHeight(), BufferedImage.TYPE_4BYTE_ABGR);
 174
 175                                 Graphics2D g = resizedImage.createGraphics();
 176                                 try {
 177                                         g.setColor(Color.white);
 178                                         g.fillRect(0, HOFFSET, COVER_WIDTH, COVER_HEIGHT);
 179
 180                                         if (cover != null) {
 181                                                 BufferedImage coverb = ImageUtilsAwt.fromImage(cover);
 182                                                 g.drawImage(coverb, 0, HOFFSET, COVER_WIDTH, COVER_HEIGHT, null);
 183                                         } else {
 184                                                 g.setColor(Color.black);
 185                                                 g.drawLine(0, HOFFSET, COVER_WIDTH, HOFFSET + COVER_HEIGHT);
 186                                                 g.drawLine(COVER_WIDTH, HOFFSET, 0, HOFFSET + COVER_HEIGHT);
 187                                         }
 188                                 } finally {
 189                                         g.dispose();
 190                                 }
 191
 192                                 // Only save image with a cover, not the X thing
 193                                 if (id != null && cover != null) {
 194                                         ByteArrayOutputStream out = new ByteArrayOutputStream();
 195                                         ImageIO.write(resizedImage, "png", out);
 196                                         byte[] imageBytes = out.toByteArray();
 197                                         in = new ByteArrayInputStream(imageBytes);
 198                                         Instance.getInstance().getCache().addToCache(in, id);
 199                                         in.close();
 200                                         in = null;
 201                                 }
 202                         } catch (MalformedURLException e) {
 203                                 Instance.getInstance().getTraceHandler().error(e);
 204                         } catch (IOException e) {
 205                                 Instance.getInstance().getTraceHandler().error(e);
 206                         }
 207                 }
 208
 209                 return resizedImage;
 210         }
 211
 212         /**
 213          * Manually clear the icon set for this item.
 214          *
 215          * @param info the info about the story or source/type or author
 216          */
 217         static public void clearIcon(BookInfo info) {
 218                 String id = getIconId(info);
 219                 Instance.getInstance().getCache().removeFromCache(id);
 220         }
 221
 222         /**
 223          * Get a unique ID from this {@link GuiReaderBookInfo} (note that it can be a
 224          * story, a fake item for a source/type or a fake item for an author).
 225          *
 226          * @param info the info or NULL for a generic (non unique!) ID
 227          * @return the unique ID
 228          */
 229         static private String getIconId(BookInfo info) {
 230                 return (info == null ? "" : info.getId() + ".") + "book-thumb_" + SPINE_WIDTH + "x" + COVER_WIDTH + "+"
 231                                 + SPINE_HEIGHT + "+" + COVER_HEIGHT + "@" + HOFFSET;
 232         }
 233 }