gdkgc.c

gtk是linux一款强大的夸平台的图形化开发工具

	case CapProjecting:
	  values->cap_style = GDK_CAP_PROJECTING;
	  break;
	}

      switch (xvalues.join_style)
	{
	case JoinMiter:
	  values->join_style = GDK_JOIN_MITER;
	  break;
	case JoinRound:
	  values->join_style = GDK_JOIN_ROUND;
	  break;
	case JoinBevel:
	  values->join_style = GDK_JOIN_BEVEL;
	  break;
	}
    }
  else
    {
      memset (values, 0, sizeof (GdkGCValues));
    }
}

void
gdk_gc_set_foreground (GdkGC	*gc,
		       GdkColor *color)
{
  GdkGCPrivate *private;

  g_return_if_fail (gc != NULL);
  g_return_if_fail (color != NULL);

  private = (GdkGCPrivate*) gc;
  XSetForeground (private->xdisplay, private->xgc, color->pixel);
}

void
gdk_gc_set_background (GdkGC	*gc,
		       GdkColor *color)
{
  GdkGCPrivate *private;

  g_return_if_fail (gc != NULL);
  g_return_if_fail (color != NULL);

  private = (GdkGCPrivate*) gc;
  XSetBackground (private->xdisplay, private->xgc, color->pixel);
}

void
gdk_gc_set_font (GdkGC	 *gc,
		 GdkFont *font)
{
  GdkGCPrivate *gc_private;
  GdkFontPrivate *font_private;

  g_return_if_fail (gc != NULL);
  g_return_if_fail (font != NULL);

  if (font->type == GDK_FONT_FONT)
    {
      gc_private = (GdkGCPrivate*) gc;
      font_private = (GdkFontPrivate*) font;
      
      XSetFont (gc_private->xdisplay, gc_private->xgc,
		((XFontStruct *) font_private->xfont)->fid);
    }
}

void
gdk_gc_set_function (GdkGC	 *gc,
		     GdkFunction  function)
{
  GdkGCPrivate *private;

  g_return_if_fail (gc != NULL);

  private = (GdkGCPrivate*) gc;

  switch (function)
    {
    case GDK_COPY:
      XSetFunction (private->xdisplay, private->xgc, GXcopy);
      break;
    case GDK_INVERT:
      XSetFunction (private->xdisplay, private->xgc, GXinvert);
      break;
    case GDK_XOR:
      XSetFunction (private->xdisplay, private->xgc, GXxor);
      break;
    case GDK_CLEAR:
      XSetFunction (private->xdisplay, private->xgc, GXclear);
      break;
    case GDK_AND:
      XSetFunction (private->xdisplay, private->xgc, GXand);
      break;
    case GDK_AND_REVERSE:
      XSetFunction (private->xdisplay, private->xgc, GXandReverse);
      break;
    case GDK_AND_INVERT:
      XSetFunction (private->xdisplay, private->xgc, GXandInverted);
      break;
    case GDK_NOOP:
      XSetFunction (private->xdisplay, private->xgc, GXnoop);
      break;
    case GDK_OR:
      XSetFunction (private->xdisplay, private->xgc, GXor);
      break;
    case GDK_EQUIV:
      XSetFunction (private->xdisplay, private->xgc, GXequiv);
      break;
    case GDK_OR_REVERSE:
      XSetFunction (private->xdisplay, private->xgc, GXorReverse);
      break;
    case GDK_COPY_INVERT:
      XSetFunction (private->xdisplay, private->xgc, GXcopyInverted);
      break;
    case GDK_OR_INVERT:
      XSetFunction (private->xdisplay, private->xgc, GXorInverted);
      break;
    case GDK_NAND:
      XSetFunction (private->xdisplay, private->xgc, GXnand);
      break;
    case GDK_SET:
      XSetFunction (private->xdisplay, private->xgc, GXset);
      break;
    }
}

void
gdk_gc_set_fill (GdkGC	 *gc,
		 GdkFill  fill)
{
  GdkGCPrivate *private;

  g_return_if_fail (gc != NULL);

  private = (GdkGCPrivate*) gc;

  switch (fill)
    {
    case GDK_SOLID:
      XSetFillStyle (private->xdisplay, private->xgc, FillSolid);
      break;
    case GDK_TILED:
      XSetFillStyle (private->xdisplay, private->xgc, FillTiled);
      break;
    case GDK_STIPPLED:
      XSetFillStyle (private->xdisplay, private->xgc, FillStippled);
      break;
    case GDK_OPAQUE_STIPPLED:
      XSetFillStyle (private->xdisplay, private->xgc, FillOpaqueStippled);
      break;
    }
}

void
gdk_gc_set_tile (GdkGC	   *gc,
		 GdkPixmap *tile)
{
  GdkGCPrivate *private;
  GdkPixmapPrivate *pixmap_private;
  Pixmap pixmap;

  g_return_if_fail (gc != NULL);

  private = (GdkGCPrivate*) gc;

  pixmap = None;
  if (tile)
    {
      pixmap_private = (GdkPixmapPrivate*) tile;
      pixmap = pixmap_private->xwindow;
    }

  XSetTile (private->xdisplay, private->xgc, pixmap);
}

void
gdk_gc_set_stipple (GdkGC     *gc,
		    GdkPixmap *stipple)
{
  GdkGCPrivate *private;
  GdkPixmapPrivate *pixmap_private;
  Pixmap pixmap;

  g_return_if_fail (gc != NULL);

  private = (GdkGCPrivate*) gc;

  pixmap = None;
  if (stipple)
    {
      pixmap_private = (GdkPixmapPrivate*) stipple;
      pixmap = pixmap_private->xwindow;
    }

  XSetStipple (private->xdisplay, private->xgc, pixmap);
}

void
gdk_gc_set_ts_origin (GdkGC *gc,
		      gint   x,
		      gint   y)
{
  GdkGCPrivate *private;

  g_return_if_fail (gc != NULL);

  private = (GdkGCPrivate*) gc;

  XSetTSOrigin (private->xdisplay, private->xgc, x, y);
}

void
gdk_gc_set_clip_origin (GdkGC *gc,
			gint   x,
			gint   y)
{
  GdkGCPrivate *private;

  g_return_if_fail (gc != NULL);

  private = (GdkGCPrivate*) gc;

  XSetClipOrigin (private->xdisplay, private->xgc, x, y);
}

void
gdk_gc_set_clip_mask (GdkGC	*gc,
		      GdkBitmap *mask)
{
  GdkGCPrivate *private;
  Pixmap xmask;
  
  g_return_if_fail (gc != NULL);
  
  if (mask)
    {
      GdkWindowPrivate *mask_private;
      
      mask_private = (GdkWindowPrivate*) mask;
      if (mask_private->destroyed)
	return;
      xmask = mask_private->xwindow;
    }
  else
    xmask = None;
  
  private = (GdkGCPrivate*) gc;

  XSetClipMask (private->xdisplay, private->xgc, xmask);
}


void
gdk_gc_set_clip_rectangle (GdkGC	*gc,
			   GdkRectangle *rectangle)
{
  GdkGCPrivate *private;
  XRectangle xrectangle;
   
  g_return_if_fail (gc != NULL);

  private = (GdkGCPrivate*) gc;

  if (rectangle)
    {
      xrectangle.x = rectangle->x; 
      xrectangle.y = rectangle->y;
      xrectangle.width = rectangle->width;
      xrectangle.height = rectangle->height;
      
      XSetClipRectangles (private->xdisplay, private->xgc, 0, 0,
			  &xrectangle, 1, Unsorted);
    }
  else
    XSetClipMask (private->xdisplay, private->xgc, None);
} 

void
gdk_gc_set_clip_region (GdkGC		 *gc,
			GdkRegion	 *region)
{
  GdkGCPrivate *private;

  g_return_if_fail (gc != NULL);

  private = (GdkGCPrivate*) gc;

  if (region)
    {
      GdkRegionPrivate *region_private;

      region_private = (GdkRegionPrivate*) region;
      XSetRegion (private->xdisplay, private->xgc, region_private->xregion);
    }
  else
    XSetClipMask (private->xdisplay, private->xgc, None);
}

void
gdk_gc_set_subwindow (GdkGC	       *gc,
		      GdkSubwindowMode	mode)
{
  GdkGCPrivate *private;

  g_return_if_fail (gc != NULL);

  private = (GdkGCPrivate*) gc;

  XSetSubwindowMode (private->xdisplay, private->xgc, mode);
}

void
gdk_gc_set_exposures (GdkGC *gc,
		      gint   exposures)
{
  GdkGCPrivate *private;

  g_return_if_fail (gc != NULL);

  private = (GdkGCPrivate*) gc;

  XSetGraphicsExposures (private->xdisplay, private->xgc, exposures);
}

void
gdk_gc_set_line_attributes (GdkGC	*gc,
			    gint	 line_width,
			    GdkLineStyle line_style,
			    GdkCapStyle	 cap_style,
			    GdkJoinStyle join_style)
{
  GdkGCPrivate *private;
  int xline_style;
  int xcap_style;
  int xjoin_style;

  g_return_if_fail (gc != NULL);

  private = (GdkGCPrivate*) gc;

  switch (line_style)
    {
    case GDK_LINE_SOLID:
      xline_style = LineSolid;
      break;
    case GDK_LINE_ON_OFF_DASH:
      xline_style = LineOnOffDash;
      break;
    case GDK_LINE_DOUBLE_DASH:
      xline_style = LineDoubleDash;
      break;
    default:
      xline_style = None;
    }

  switch (cap_style)
    {
    case GDK_CAP_NOT_LAST:
      xcap_style = CapNotLast;
      break;
    case GDK_CAP_BUTT:
      xcap_style = CapButt;
      break;
    case GDK_CAP_ROUND:
      xcap_style = CapRound;
      break;
    case GDK_CAP_PROJECTING:
      xcap_style = CapProjecting;
      break;
    default:
      xcap_style = None;
    }

  switch (join_style)
    {
    case GDK_JOIN_MITER:
      xjoin_style = JoinMiter;
      break;
    case GDK_JOIN_ROUND:
      xjoin_style = JoinRound;
      break;
    case GDK_JOIN_BEVEL:
      xjoin_style = JoinBevel;
      break;
    default:
      xjoin_style = None;
    }

  XSetLineAttributes (private->xdisplay, private->xgc, line_width,
		      xline_style, xcap_style, xjoin_style);
}

void
gdk_gc_set_dashes (GdkGC *gc,
		   gint	  dash_offset,
		   gchar  dash_list[],
		   gint   n)
{
  GdkGCPrivate *private;

  g_return_if_fail (gc != NULL);
  g_return_if_fail (dash_list != NULL);

  private = (GdkGCPrivate*) gc;

  XSetDashes (private->xdisplay, private->xgc, dash_offset, dash_list, n);
}

void
gdk_gc_copy (GdkGC *dst_gc, GdkGC *src_gc)
{
  GdkGCPrivate *dst_private, *src_private;

  src_private = (GdkGCPrivate *) src_gc;
  dst_private = (GdkGCPrivate *) dst_gc;

  XCopyGC (src_private->xdisplay, src_private->xgc, ~((~1) << GCLastBit),
	   dst_private->xgc);
}