Package com.sun.glass.ui.monocle

Interface NativeScreen

  • All Known Implementing Classes:
    AndroidScreen
    public interface NativeScreen
    NativeScreen provides access to a device's screen

    • Field Summary

      Fields 
      Modifier and Type Field Description
      static java.lang.Object framebufferSwapLock
      An Object to lock against when swapping screen buffers.

    • Method Summary

      All Methods Instance Methods Abstract Methods 
      Modifier and Type Method Description
      int getDepth()
      Returns the bit depth of the screen/
      int getDPI()
      Returns the number of pixels per inch in the screen.
      int getHeight()
      Returns the pixel height of the screen.
      int getNativeFormat()
      Returns the native format of the screen, as a constant from the Pixels class.
      long getNativeHandle()
      Returns a native handle for the screen.
      float getScale()
      Return the scale factor between the physical pixels and the logical pixels e.g.
      java.nio.ByteBuffer getScreenCapture()
      Returns a read-only ByteBuffer in the native pixel format containing the screen contents.
      int getWidth()
      Returns the pixel width of the screen.
      void shutdown()
      Called during JavaFX shutdown to release the screen.
      void swapBuffers()
      Called on the JavaFX application thread when pixel data for all windows has been uploaded.
      void uploadPixels​(java.nio.Buffer b, int x, int y, int width, int height, float alpha)
      Uploads a pixel buffer to the screen.

    • Field Detail

      • framebufferSwapLock

        static final java.lang.Object framebufferSwapLock
        An Object to lock against when swapping screen buffers.

    • Method Detail

      • getDepth

        int getDepth()
        Returns the bit depth of the screen/

      • getNativeFormat

        int getNativeFormat()
        Returns the native format of the screen, as a constant from the Pixels class.

      • getWidth

        int getWidth()
        Returns the pixel width of the screen.

      • getHeight

        int getHeight()
        Returns the pixel height of the screen.

      • getDPI

        int getDPI()
        Returns the number of pixels per inch in the screen.

      • getNativeHandle

        long getNativeHandle()
        Returns a native handle for the screen. The handle is platform-specific.

      • shutdown

        void shutdown()
        Called during JavaFX shutdown to release the screen. Called only once.

      • uploadPixels

        void uploadPixels​(java.nio.Buffer b,
                  int x,
                  int y,
                  int width,
                  int height,
                  float alpha)
        Uploads a pixel buffer to the screen. Called on the JavaFX application thread.
        Parameters:
        b - Pixel data, in BYTE_BGRA_PRE format. The byte stride of the data is equal to width * 4.
        x - The X offset of the pixel data on the screen
        y - The Y offset of the pixel data on the screen
        width - The pixel width of the data
        height - The pixel height of the data
        alpha - The alpha level to use to compose the data over existing pixels

      • swapBuffers

        void swapBuffers()
        Called on the JavaFX application thread when pixel data for all windows has been uploaded.

      • getScreenCapture

        java.nio.ByteBuffer getScreenCapture()
        Returns a read-only ByteBuffer in the native pixel format containing the screen contents.
        Returns:
        ByteBuffer a read-only ByteBuffer containing the screen contents

      • getScale

        float getScale()
        Return the scale factor between the physical pixels and the logical pixels e.g. hdpi = 1.5, xhdpi = 2.0