Package org.eclipse.nebula.widgets.opal.commons

Class SWTGraphicUtil

java.lang.Object
org.eclipse.nebula.widgets.opal.commons.SWTGraphicUtil
public class SWTGraphicUtil
extends java.lang.Object
This class is a singleton that provides useful methods

  • Method Summary

    Modifier and Type Method Description
    static void addDisposer​(org.eclipse.swt.widgets.Widget widget, org.eclipse.swt.graphics.Resource... resources)
    Dispose safely any SWT resource when a widget is disposed
    static void applyHTMLFormating​(org.eclipse.swt.custom.StyledText styledText)
    Apply a very basic pseudo-HTML formating to a text stored in a StyledText widget.
    static org.eclipse.swt.graphics.ImageData blur​(org.eclipse.swt.graphics.ImageData originalImageData, int radius)  
    static org.eclipse.swt.graphics.Font buildFontFrom​(org.eclipse.swt.widgets.Control control, int style)
    Build a font from a given control.
    static org.eclipse.swt.graphics.Font buildFontFrom​(org.eclipse.swt.widgets.Control control, int style, int size)
    Build a font from a given control.
    static void centerShell​(org.eclipse.swt.widgets.Shell shell)
    Center a shell on the primary monitor
    static org.eclipse.swt.graphics.Point computeSize​(java.lang.String text, org.eclipse.swt.graphics.Font font)  
    static int computeWidth​(java.lang.String text)  
    static org.eclipse.swt.graphics.Image createImageFromFile​(java.lang.String fileName)
    Loads an image and create a SWT Image corresponding to this file
    static org.eclipse.swt.graphics.Image createReflectedImage​(org.eclipse.swt.graphics.Image source)
    Create a reflected image of a source Inspired by Daniel Spiewak work (http://www.eclipsezone.com/eclipse/forums/t91013.html)
    static org.eclipse.swt.graphics.Image createReflectedResizedImage​(org.eclipse.swt.graphics.Image source, int newWidth, int newHeight)
    Create a reflected and resized version of an image
    static void disableAllChildrenWidgets​(org.eclipse.swt.widgets.Control control)
    Disable all widgets of a control
    static void enableAllChildrenWidgets​(org.eclipse.swt.widgets.Control control)
    Enable all widgets of a control
    static org.eclipse.swt.graphics.Rectangle getBoundsOfMonitorOnWhichShellIsDisplayed​(org.eclipse.swt.widgets.Shell shell)  
    static org.eclipse.swt.graphics.Color getColorSafely​(int r, int g, int b)
    Create a color that is disposed automatically
    static org.eclipse.swt.graphics.Color getDefaultColor​(org.eclipse.swt.widgets.Control control, int red, int green, int blue)  
    static boolean isLinux()  
    static boolean isMacOS()  
    static org.eclipse.swt.graphics.Image resize​(org.eclipse.swt.graphics.Image source, int newWidth, int newHeight)
    Returns a new scaled image.
    static void safeDispose​(org.eclipse.swt.graphics.Resource resource)
    Dispose safely any SWT resource

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Method Details

    • addDisposer

      public static void addDisposer​(org.eclipse.swt.widgets.Widget widget, org.eclipse.swt.graphics.Resource... resources)
      Dispose safely any SWT resource when a widget is disposed
      Parameters:
      widget - widget attached to the resource
      resources - the resources to dispose

    • safeDispose

      public static void safeDispose​(org.eclipse.swt.graphics.Resource resource)
      Dispose safely any SWT resource
      Parameters:
      resource - the resource to dispose

    • getColorSafely

      public static org.eclipse.swt.graphics.Color getColorSafely​(int r, int g, int b)
      Create a color that is disposed automatically
      Parameters:
      r - red component
      g - green component
      b - blue component
      Returns:
      the color

    • createImageFromFile

      public static org.eclipse.swt.graphics.Image createImageFromFile​(java.lang.String fileName)
      Loads an image and create a SWT Image corresponding to this file
      Parameters:
      fileName - file name of the image
      Returns:
      an image
      See Also:
      Image

    • createReflectedImage

      public static org.eclipse.swt.graphics.Image createReflectedImage​(org.eclipse.swt.graphics.Image source)
      Create a reflected image of a source Inspired by Daniel Spiewak work (http://www.eclipsezone.com/eclipse/forums/t91013.html)
      Parameters:
      source - source to be reflected
      Returns:
      the source image with a reflection

    • resize

      public static org.eclipse.swt.graphics.Image resize​(org.eclipse.swt.graphics.Image source, int newWidth, int newHeight)
      Returns a new scaled image.
      Parameters:
      source - the image to be scaled
      newWidth - new width of the image
      newHeight - new height of the image
      Returns:
      a scaled image of the source

    • createReflectedResizedImage

      public static org.eclipse.swt.graphics.Image createReflectedResizedImage​(org.eclipse.swt.graphics.Image source, int newWidth, int newHeight)
      Create a reflected and resized version of an image
      Parameters:
      source - source image to be scaled and reflected
      newWidth - new width of the scaled image
      newHeight - new height of the scaled image
      Returns:
      the resized and reflected image

    • centerShell

      public static void centerShell​(org.eclipse.swt.widgets.Shell shell)
      Center a shell on the primary monitor
      Parameters:
      shell - shell to center

    • getBoundsOfMonitorOnWhichShellIsDisplayed

      public static org.eclipse.swt.graphics.Rectangle getBoundsOfMonitorOnWhichShellIsDisplayed​(org.eclipse.swt.widgets.Shell shell)
      Parameters:
      shell -
      Returns:
      the bounds of the monitor on which the shell is running
      Throws:
      org.eclipse.swt.SWTException -
      • ERROR_NULL_ARGUMENT - if the provided shell is null
      • ERROR_WIDGET_DISPOSED - if the shell is disposed

    • applyHTMLFormating

      public static void applyHTMLFormating​(org.eclipse.swt.custom.StyledText styledText)
      Apply a very basic pseudo-HTML formating to a text stored in a StyledText widget. Supported tags are , , , , , and
      Parameters:
      styledText - styled text that contains an HTML text

    • blur

      public static org.eclipse.swt.graphics.ImageData blur​(org.eclipse.swt.graphics.ImageData originalImageData, int radius)
      Parameters:
      originalImageData - The ImageData to be average blurred. Transparency information will be ignored.
      radius - the number of radius pixels to consider when blurring image.
      Returns:
      A blurred copy of the image data, or null if an error occured.

    • enableAllChildrenWidgets

      public static void enableAllChildrenWidgets​(org.eclipse.swt.widgets.Control control)
      Enable all widgets of a control
      Parameters:
      control - control to enable/disable
      enable - true to enable, false to disable

    • disableAllChildrenWidgets

      public static void disableAllChildrenWidgets​(org.eclipse.swt.widgets.Control control)
      Disable all widgets of a control
      Parameters:
      control - control to enable/disable
      enable - true to enable, false to disable

    • buildFontFrom

      public static org.eclipse.swt.graphics.Font buildFontFrom​(org.eclipse.swt.widgets.Control control, int style)
      Build a font from a given control. Useful if we just want a bold label for example
      Parameters:
      control - control that handle the default font
      style - new style
      Returns:
      a font with the given style

    • buildFontFrom

      public static org.eclipse.swt.graphics.Font buildFontFrom​(org.eclipse.swt.widgets.Control control, int style, int size)
      Build a font from a given control. Useful if we just want a bold label for example
      Parameters:
      control - control that handle the default font
      style - new style
      Returns:
      a font with the given style

    • isMacOS

      public static boolean isMacOS()
      Returns:
      true if the operating system is MacOS, false otherwise

    • isLinux

      public static boolean isLinux()
      Returns:
      true if the operating system is Linux, false otherwise

    • getDefaultColor

      public static org.eclipse.swt.graphics.Color getDefaultColor​(org.eclipse.swt.widgets.Control control, int red, int green, int blue)
      Parameters:
      control -
      red -
      green -
      blue -
      Returns:
      a color that will be disposed when control is disposed

    • computeWidth

      public static int computeWidth​(java.lang.String text)
      Parameters:
      text -
      Returns:
      the width of text

    • computeSize

      public static org.eclipse.swt.graphics.Point computeSize​(java.lang.String text, org.eclipse.swt.graphics.Font font)
      Parameters:
      text -
      font -
      Returns:
      the width and height of this text for the given font