svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.compat / org.gvsig.compat.api / src / main / java / org / gvsig / compat / lang / GraphicsUtils.java @ 40435
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| 1 | 40435 | jjdelcerro | package org.gvsig.compat.lang; |
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| 2 | |||
| 3 | import java.awt.Font; |
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| 4 | import java.awt.Graphics2D; |
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| 5 | import java.awt.Image; |
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| 6 | import java.awt.image.BufferedImage; |
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| 7 | |||
| 8 | import org.gvsig.compat.print.PrintAttributes; |
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| 9 | |||
| 10 | /**
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| 11 | * Multi-platform graphic utils interface.
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| 12 | * This allows platforms with poor java.awt.Graphics2D implementations to
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| 13 | * share most of the application source code.
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| 14 | *
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| 15 | * @author Juan Lucas Dominguez Rubio jldominguez at prodevelop.es
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| 16 | *
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| 17 | */
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| 18 | public interface GraphicsUtils { |
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| 19 | |||
| 20 | /**
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| 21 | * Create a buffered Image of the given size and type.
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| 22 | * In this context, buffered image means editable image (admits setRGB etc)
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| 23 | *
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| 24 | * @param w width in pixels of the requested image
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| 25 | * @param h height in pixels of the requested image
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| 26 | * @param type image type (refers to bands, etc. see {@link Image}
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| 27 | * @return a buffered (editable) image of the desired size and type
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| 28 | */
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| 29 | public BufferedImage createBufferedImage(int w, int h, int type); |
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| 30 | |||
| 31 | /**
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| 32 | * Produces a copy of a buffered image with the same graphic content (pixel color)
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| 33 | * @param img image to be copied
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| 34 | * @return new instance of a BufferedImage (editable) with same size, type and graphic content.
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| 35 | */
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| 36 | public BufferedImage copyBufferedImage(BufferedImage img); |
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| 37 | |||
| 38 | /**
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| 39 | * Returns an istance of Font which is the same as the one provided except for the size.
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| 40 | *
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| 41 | * @param srcfont provided font to be used as model
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| 42 | * @param newheight height in pixels of the new fonr
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| 43 | * @return the new font, same properties as the provided font, but different size
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| 44 | */
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| 45 | public Font deriveFont(Font srcfont, float newheight); |
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| 46 | |||
| 47 | /**
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| 48 | * Returns device screen DPI (dots per inch)
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| 49 | *
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| 50 | * @return number of pixels per inch in the current screen
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| 51 | */
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| 52 | public int getScreenDPI(); |
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| 53 | |||
| 54 | /**
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| 55 | * Adds a translation operation to the Graphics2D object's transformation matrix.
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| 56 | *
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| 57 | * @param g Object whose transformation matrix has to be modified
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| 58 | * @param x horizontal offset of the translation
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| 59 | * @param y vertical offset of the translation
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| 60 | */
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| 61 | public void translate(Graphics2D g, double x, double y); |
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| 62 | |||
| 63 | /**
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| 64 | * Creates an object that implements the PrintAttributes interface with default/trivial values.
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| 65 | *
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| 66 | * @return an object that implements the PrintAttributes interface with default/trivial values.
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| 67 | */
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| 68 | public PrintAttributes createPrintAttributes();
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| 69 | |||
| 70 | /**
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| 71 | * Sets the rendering hints to the Graphics2D object in a way that is suitable for drawing.
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| 72 | *
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| 73 | * @param g the Graphics2D object whose rendering hints have to be set for drawing
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| 74 | */
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| 75 | public void setRenderingHintsForDrawing(Graphics2D g); |
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| 76 | |||
| 77 | /**
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| 78 | * Sets the rendering hints to the Graphics2D object in a way that is suitable for printing.
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| 79 | *
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| 80 | * @param g the Graphics2D object whose rendering hints have to be set for printing
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| 81 | */
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| 82 | public void setRenderingHintsForPrinting(Graphics2D g); |
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| 83 | } |