gdkgc-x11.c

linux下电话本所依赖的一些图形库

	  gdk_region_destroy (x11_gc->clip_region);
	  x11_gc->clip_region = NULL;
	}

      x11_gc->have_clip_mask = values->clip_mask != NULL;
    }

  if (values_mask & GDK_GC_FOREGROUND)
    x11_gc->fg_pixel = values->foreground.pixel;

  if (values_mask & GDK_GC_BACKGROUND)
    {
      if (x11_gc->bg_pixel != values->background.pixel)
	{
	  x11_gc->bg_pixel = values->background.pixel;
	  if (x11_gc->fill == GDK_OPAQUE_STIPPLED)
	    clear_fg_picture (gc);
	}
    }

  if (values_mask & GDK_GC_FILL)
    {
      if (x11_gc->fill != values->fill)
	{
	  clear_fg_picture (gc);
	  x11_gc->fill = values->fill;
	}
    }
  
  if (values_mask & GDK_GC_STIPPLE)
    {
      if (x11_gc->stipple != values->stipple)
	{
	  if (x11_gc->fill == GDK_STIPPLED || x11_gc->fill == GDK_OPAQUE_STIPPLED)
	    clear_fg_picture (gc);
	  if (x11_gc->stipple)
	    g_object_unref (x11_gc->stipple);
	  x11_gc->stipple = values->stipple;
	  if (x11_gc->stipple)
	    g_object_ref (x11_gc->stipple);
	}
    }
  
  if (values_mask & GDK_GC_TILE)
    {
      if (x11_gc->tile != values->tile)
	{
	  if (x11_gc->fill == GDK_TILED)
	    clear_fg_picture (gc);
	  if (x11_gc->tile)
	    g_object_unref (x11_gc->tile);
	  x11_gc->tile = values->tile;
	  if (x11_gc->tile)
	    g_object_ref (x11_gc->tile);
	}
    }
  
  gdk_x11_gc_values_to_xvalues (values, values_mask, &xvalues, &xvalues_mask);

  XChangeGC (GDK_GC_XDISPLAY (gc),
	     GDK_GC_XGC (gc),
	     xvalues_mask,
	     &xvalues);
}

static void
gdk_x11_gc_set_dashes (GdkGC *gc,
		       gint   dash_offset,
		       gint8  dash_list[],
		       gint   n)
{
  g_return_if_fail (GDK_IS_GC (gc));
  g_return_if_fail (dash_list != NULL);

  XSetDashes (GDK_GC_XDISPLAY (gc), GDK_GC_XGC (gc),
	      dash_offset, dash_list, n);
}

static void
gdk_x11_gc_values_to_xvalues (GdkGCValues    *values,
			      GdkGCValuesMask mask,
			      XGCValues      *xvalues,
			      unsigned long  *xvalues_mask)
{
  /* Optimization for the common case (gdk_gc_new()) */
  if (values == NULL || mask == 0)
    return;
  
  if (mask & GDK_GC_FOREGROUND)
    {
      xvalues->foreground = values->foreground.pixel;
      *xvalues_mask |= GCForeground;
    }
  if (mask & GDK_GC_BACKGROUND)
    {
      xvalues->background = values->background.pixel;
      *xvalues_mask |= GCBackground;
    }
  if ((mask & GDK_GC_FONT) && (values->font->type == GDK_FONT_FONT))
    {
      xvalues->font = ((XFontStruct *) (GDK_FONT_XFONT (values->font)))->fid;
      *xvalues_mask |= GCFont;
    }
  if (mask & GDK_GC_FUNCTION)
    {
      switch (values->function)
	{
	case GDK_COPY:
	  xvalues->function = GXcopy;
	  break;
	case GDK_INVERT:
	  xvalues->function = GXinvert;
	  break;
	case GDK_XOR:
	  xvalues->function = GXxor;
	  break;
	case GDK_CLEAR:
	  xvalues->function = GXclear;
	  break;
	case GDK_AND:
	  xvalues->function = GXand;
	  break;
	case GDK_AND_REVERSE:
	  xvalues->function = GXandReverse;
	  break;
	case GDK_AND_INVERT:
	  xvalues->function = GXandInverted;
	  break;
	case GDK_NOOP:
	  xvalues->function = GXnoop;
	  break;
	case GDK_OR:
	  xvalues->function = GXor;
	  break;
	case GDK_EQUIV:
	  xvalues->function = GXequiv;
	  break;
	case GDK_OR_REVERSE:
	  xvalues->function = GXorReverse;
	  break;
	case GDK_COPY_INVERT:
	  xvalues->function = GXcopyInverted;
	  break;
	case GDK_OR_INVERT:
	  xvalues->function = GXorInverted;
	  break;
	case GDK_NAND:
	  xvalues->function = GXnand;
	  break;
	case GDK_SET:
	  xvalues->function = GXset;
	  break;
	case GDK_NOR:
	  xvalues->function = GXnor;
	  break;
	}
      *xvalues_mask |= GCFunction;
    }
  if (mask & GDK_GC_FILL)
    {
      switch (values->fill)
	{
	case GDK_SOLID:
	  xvalues->fill_style = FillSolid;
	  break;
	case GDK_TILED:
	  xvalues->fill_style = FillTiled;
	  break;
	case GDK_STIPPLED:
	  xvalues->fill_style = FillStippled;
	  break;
	case GDK_OPAQUE_STIPPLED:
	  xvalues->fill_style = FillOpaqueStippled;
	  break;
	}
      *xvalues_mask |= GCFillStyle;
    }
  if (mask & GDK_GC_TILE)
    {
      if (values->tile)
	xvalues->tile = GDK_DRAWABLE_XID (values->tile);
      else
	xvalues->tile = None;
      
      *xvalues_mask |= GCTile;
    }
  if (mask & GDK_GC_STIPPLE)
    {
      if (values->stipple)
	xvalues->stipple = GDK_DRAWABLE_XID (values->stipple);
      else
	xvalues->stipple = None;
      
      *xvalues_mask |= GCStipple;
    }
  if (mask & GDK_GC_CLIP_MASK)
    {
      if (values->clip_mask)
	xvalues->clip_mask = GDK_DRAWABLE_XID (values->clip_mask);
      else
	xvalues->clip_mask = None;

      *xvalues_mask |= GCClipMask;
      
    }
  if (mask & GDK_GC_SUBWINDOW)
    {
      xvalues->subwindow_mode = values->subwindow_mode;
      *xvalues_mask |= GCSubwindowMode;
    }
  if (mask & GDK_GC_TS_X_ORIGIN)
    {
      xvalues->ts_x_origin = values->ts_x_origin;
      *xvalues_mask |= GCTileStipXOrigin;
    }
  if (mask & GDK_GC_TS_Y_ORIGIN)
    {
      xvalues->ts_y_origin = values->ts_y_origin;
      *xvalues_mask |= GCTileStipYOrigin;
    }
  if (mask & GDK_GC_CLIP_X_ORIGIN)
    {
      xvalues->clip_x_origin = values->clip_x_origin;
      *xvalues_mask |= GCClipXOrigin;
    }
  if (mask & GDK_GC_CLIP_Y_ORIGIN)
    {
      xvalues->clip_y_origin = values->clip_y_origin;
      *xvalues_mask |= GCClipYOrigin;
    }

  if (mask & GDK_GC_EXPOSURES)
    {
      xvalues->graphics_exposures = values->graphics_exposures;
      *xvalues_mask |= GCGraphicsExposures;
    }

  if (mask & GDK_GC_LINE_WIDTH)
    {
      xvalues->line_width = values->line_width;
      *xvalues_mask |= GCLineWidth;
    }
  if (mask & GDK_GC_LINE_STYLE)
    {
      switch (values->line_style)
	{
	case GDK_LINE_SOLID:
	  xvalues->line_style = LineSolid;
	  break;
	case GDK_LINE_ON_OFF_DASH:
	  xvalues->line_style = LineOnOffDash;
	  break;
	case GDK_LINE_DOUBLE_DASH:
	  xvalues->line_style = LineDoubleDash;
	  break;
	}
      *xvalues_mask |= GCLineStyle;
    }
  if (mask & GDK_GC_CAP_STYLE)
    {
      switch (values->cap_style)
	{
	case GDK_CAP_NOT_LAST:
	  xvalues->cap_style = CapNotLast;
	  break;
	case GDK_CAP_BUTT:
	  xvalues->cap_style = CapButt;
	  break;
	case GDK_CAP_ROUND:
	  xvalues->cap_style = CapRound;
	  break;
	case GDK_CAP_PROJECTING:
	  xvalues->cap_style = CapProjecting;
	  break;
	}
      *xvalues_mask |= GCCapStyle;
    }
  if (mask & GDK_GC_JOIN_STYLE)
    {
      switch (values->join_style)
	{
	case GDK_JOIN_MITER:
	  xvalues->join_style = JoinMiter;
	  break;
	case GDK_JOIN_ROUND:
	  xvalues->join_style = JoinRound;
	  break;
	case GDK_JOIN_BEVEL:
	  xvalues->join_style = JoinBevel;
	  break;
	}
      *xvalues_mask |= GCJoinStyle;
    }

}

/**
 * gdk_gc_set_clip_rectangle:
 * @gc: a #GdkGC.
 * @rectangle: the rectangle to clip to.
 * 
 * Sets the clip mask for a graphics context from a
 * rectangle. The clip mask is interpreted relative to the clip
 * origin. (See gdk_gc_set_clip_origin()).
 **/
void
gdk_gc_set_clip_rectangle (GdkGC	*gc,
			   GdkRectangle *rectangle)
{
  GdkGCX11 *x11_gc;
  gboolean had_region = FALSE;
  
  g_return_if_fail (GDK_IS_GC (gc));

  x11_gc = GDK_GC_X11 (gc);

  if (x11_gc->clip_region)
    {
      had_region = TRUE;
      gdk_region_destroy (x11_gc->clip_region);
    }

  if (rectangle)
    x11_gc->clip_region = gdk_region_rectangle (rectangle);
  else
    x11_gc->clip_region = NULL;

  /* Unset immediately, to make sure Xlib doesn't keep the
   * XID of an old clip mask cached
   */
  if ((had_region && !rectangle) || x11_gc->have_clip_mask)
    {
      XSetClipMask (GDK_GC_XDISPLAY (gc), GDK_GC_XGC (gc), None);
      x11_gc->have_clip_mask = FALSE;
    }

  gc->clip_x_origin = 0;
  gc->clip_y_origin = 0;
  
  x11_gc->dirty_mask |= GDK_GC_DIRTY_CLIP;
}

/**
 * gdk_gc_set_clip_region:
 * @gc: a #GdkGC.
 * @region: the #GdkRegion. 
 * 
 * Sets the clip mask for a graphics context from a region structure.
 * The clip mask is interpreted relative to the clip origin. (See
 * gdk_gc_set_clip_origin()).
 **/
void
gdk_gc_set_clip_region (GdkGC	  *gc,
			GdkRegion *region)
{
  GdkGCX11 *x11_gc;
  gboolean had_region = FALSE;

  g_return_if_fail (GDK_IS_GC (gc));

  x11_gc = GDK_GC_X11 (gc);

  if (x11_gc->clip_region)
    {
      had_region = TRUE;
      gdk_region_destroy (x11_gc->clip_region);
    }

  if (region)
    x11_gc->clip_region = gdk_region_copy (region);
  else
    x11_gc->clip_region = NULL;    

  /* Unset immediately, to make sure Xlib doesn't keep the
   * XID of an old clip mask cached
   */
  if ((had_region && !region) || x11_gc->have_clip_mask)
    {
      XSetClipMask (GDK_GC_XDISPLAY (gc), GDK_GC_XGC (gc), None);
      x11_gc->have_clip_mask = FALSE;
    }

  gc->clip_x_origin = 0;
  gc->clip_y_origin = 0;
  
  x11_gc->dirty_mask |= GDK_GC_DIRTY_CLIP;
}


/**
 * gdk_gc_copy:
 * @dst_gc: the destination graphics context.
 * @src_gc: the source graphics context.
 * 
 * Copy the set of values from one graphics context
 * onto another graphics context.
 **/
void
gdk_gc_copy (GdkGC *dst_gc, GdkGC *src_gc)
{
  GdkGCX11 *x11_src_gc;
  GdkGCX11 *x11_dst_gc;
  
  g_return_if_fail (GDK_IS_GC_X11 (dst_gc));
  g_return_if_fail (GDK_IS_GC_X11 (src_gc));

  x11_dst_gc = GDK_GC_X11 (dst_gc);
  x11_src_gc = GDK_GC_X11 (src_gc);
  
  XCopyGC (GDK_GC_XDISPLAY (src_gc), GDK_GC_XGC (src_gc), ~((~1) << GCLastBit),
	   GDK_GC_XGC (dst_gc));

  dst_gc->clip_x_origin = src_gc->clip_x_origin;
  dst_gc->clip_y_origin = src_gc->clip_y_origin;
  dst_gc->ts_x_origin = src_gc->ts_x_origin;
  dst_gc->ts_y_origin = src_gc->ts_y_origin;

  if (src_gc->colormap)
    g_object_ref (src_gc->colormap);

  if (dst_gc->colormap)
    g_object_unref (dst_gc->colormap);

  dst_gc->colormap = src_gc->colormap;

  if (x11_dst_gc->clip_region)
    gdk_region_destroy (x11_dst_gc->clip_region);

  if (x11_src_gc->clip_region)
    x11_dst_gc->clip_region = gdk_region_copy (x11_src_gc->clip_region);
  else
    x11_dst_gc->clip_region = NULL;

  x11_dst_gc->dirty_mask = x11_src_gc->dirty_mask;
  x11_dst_gc->fg_pixel = x11_src_gc->fg_pixel;
  x11_dst_gc->fill = x11_src_gc->fill;