The R Project SVN R

Rev

Rev 79409 | Rev 81278 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 79409 Rev 81097
Line 723... Line 723...
723 
    /* This can be used to OVERRIDE canClip so that graphics engine
 723 
    /* This can be used to OVERRIDE canClip so that graphics engine
724 
     * leaves ALL clipping to the graphics device
724 
     * leaves ALL clipping to the graphics device
725 
     */
 725 
     */
726 
    Rboolean deviceClip;
 726 
    Rboolean deviceClip;
727 
 
 727 
 
- 
 
 728 
    /* Define a group of shapes that will be drawn together.
- 
 
 729 
     *
- 
 
 730 
     * 'source' is an R function that draws something.
- 
 
 731 
     * 'op' is the composition operator applied when drawing 'group'.
- 
 
 732 
     *     (this must be R_GE_compositeOver or one of its ilk;
- 
 
 733 
     *      see GraphicsEngine.h).
- 
 
 734 
     * 'destination' is either NULL or an R function that draws something.
- 
 
 735 
     * 'name' is a string that can be used to identify the group on the device.
- 
 
 736 
     *
- 
 
 737 
     * 'destination' is drawn first (using the "over" compositing operator),
- 
 
 738 
     * then 'source' is drawn using the 'op' compositing operator.
- 
 
 739 
     *
- 
 
 740 
     * The return value is a "reference" to the group that only has to
- 
 
 741 
     * make sense to the device; it is sent back in via useGroup().
- 
 
 742 
     */
- 
 
 743 
#if R_USE_PROTOTYPES
- 
 
 744 
    SEXP (*defineGroup)(SEXP source, int op, SEXP destination, pDevDesc dd);
- 
 
 745 
#else
- 
 
 746 
    SEXP (*defineGroup)();
- 
 
 747 
#endif
- 
 
 748 
    /* Render a group of shapes that has previously been defined.
- 
 
 749 
     * If the group identified by 'ref' does not exist on the device,
- 
 
 750 
     * do nothing.
- 
 
 751 
     *
- 
 
 752 
     * 'trans' is a transformation matrix or NULL (which means do not transform)
- 
 
 753 
     */
- 
 
 754 
#if R_USE_PROTOTYPES
- 
 
 755 
    void (*useGroup)(SEXP ref, SEXP trans, pDevDesc dd);
- 
 
 756 
#else
- 
 
 757 
    void (*useGroup)();
- 
 
 758 
#endif
- 
 
 759 
    /* An opportunity for the device to "release" (e.g., the memory
- 
 
 760 
     * associated with) a group definition.
- 
 
 761 
     */
- 
 
 762 
#if R_USE_PROTOTYPES
- 
 
 763 
    void (*releaseGroup)(SEXP ref, pDevDesc dd);
- 
 
 764 
#else
- 
 
 765 
    void (*releaseGroup)();
- 
 
 766 
#endif
- 
 
 767 
 
- 
 
 768 
    /* Draw (stroke or fill) a path,
- 
 
 769 
     * where the path is defined by an R function that draws something
- 
 
 770 
     */
- 
 
 771 
#if R_USE_PROTOTYPES
- 
 
 772 
    void (*stroke)(SEXP path, const pGEcontext gc, pDevDesc dd);
- 
 
 773 
#else
- 
 
 774 
    void (*stroke)();
- 
 
 775 
#endif
- 
 
 776 
#if R_USE_PROTOTYPES
- 
 
 777 
    void (*fill)(SEXP path, int rule, const pGEcontext gc, pDevDesc dd);
- 
 
 778 
#else
- 
 
 779 
    void (*fill)();
- 
 
 780 
#endif
- 
 
 781 
#if R_USE_PROTOTYPES
- 
 
 782 
    void (*fillStroke)(SEXP path, int rule, const pGEcontext gc, pDevDesc dd);
- 
 
 783 
#else
- 
 
 784 
    void (*fillStroke)();
- 
 
 785 
#endif
- 
 
 786 
 
728 
    /* Area for future expansion.
 787 
    /* Area for future expansion.
729 
       By zeroing this, devices are more likely to work if loaded
 788 
       By zeroing this, devices are more likely to work if loaded
730 
       into a later version of R than that they were compiled under.
 789 
       into a later version of R than that they were compiled under.
731 
    */
 790 
    */
732 
    char reserved[64];
 791 
    char reserved[64];