gdkdrawable-x11.c

linux下电话本所依赖的一些图形库

 	{
 	  XRectangle rect;
 	  
 	  rect.x = CLAMP (boxes[i].x1 + gc->clip_x_origin, G_MINSHORT, G_MAXSHORT);
 	  rect.y = CLAMP (boxes[i].y1 + gc->clip_y_origin, G_MINSHORT, G_MAXSHORT);
 	  rect.width = CLAMP (boxes[i].x2 + gc->clip_x_origin, G_MINSHORT, G_MAXSHORT) - rect.x;
 	  rect.height = CLAMP (boxes[i].y2 + gc->clip_y_origin, G_MINSHORT, G_MAXSHORT) - rect.y;
	  
 	  XUnionRectWithRegion (&rect, xregion, xregion);
 	}
      
      XftDrawSetClip (xft_draw, xregion);
      XDestroyRegion (xregion);
#endif      
    }
  else
    {
      XftDrawSetClip (xft_draw, NULL);
    }
}

/*****************************************************
 * X11 specific implementations of generic functions *
 *****************************************************/

static GdkColormap*
gdk_x11_get_colormap (GdkDrawable *drawable)
{
  GdkDrawableImplX11 *impl;

  impl = GDK_DRAWABLE_IMPL_X11 (drawable);

  return impl->colormap;
}

static void
gdk_x11_set_colormap (GdkDrawable *drawable,
                      GdkColormap *colormap)
{
  GdkDrawableImplX11 *impl;

  impl = GDK_DRAWABLE_IMPL_X11 (drawable);

  if (impl->colormap == colormap)
    return;
  
  if (impl->colormap)
    g_object_unref (impl->colormap);
  impl->colormap = colormap;
  if (impl->colormap)
    g_object_ref (impl->colormap);
}

/* Drawing
 */

static void
gdk_x11_draw_rectangle (GdkDrawable *drawable,
			GdkGC       *gc,
			gboolean     filled,
			gint         x,
			gint         y,
			gint         width,
			gint         height)
{
  GdkDrawableImplX11 *impl;

  impl = GDK_DRAWABLE_IMPL_X11 (drawable);
  
  if (filled)
    XFillRectangle (GDK_SCREEN_XDISPLAY (impl->screen), impl->xid,
		    GDK_GC_GET_XGC (gc), x, y, width, height);
  else
    XDrawRectangle (GDK_SCREEN_XDISPLAY (impl->screen), impl->xid,
		    GDK_GC_GET_XGC (gc), x, y, width, height);
}

static void
gdk_x11_draw_arc (GdkDrawable *drawable,
		  GdkGC       *gc,
		  gboolean     filled,
		  gint         x,
		  gint         y,
		  gint         width,
		  gint         height,
		  gint         angle1,
		  gint         angle2)
{
  GdkDrawableImplX11 *impl;

  impl = GDK_DRAWABLE_IMPL_X11 (drawable);

  
  if (filled)
    XFillArc (GDK_SCREEN_XDISPLAY (impl->screen), impl->xid,
	      GDK_GC_GET_XGC (gc), x, y, width, height, angle1, angle2);
  else
    XDrawArc (GDK_SCREEN_XDISPLAY (impl->screen), impl->xid,
	      GDK_GC_GET_XGC (gc), x, y, width, height, angle1, angle2);
}

static void
gdk_x11_draw_polygon (GdkDrawable *drawable,
		      GdkGC       *gc,
		      gboolean     filled,
		      GdkPoint    *points,
		      gint         npoints)
{
  XPoint *tmp_points;
  gint tmp_npoints, i;
  GdkDrawableImplX11 *impl;

  impl = GDK_DRAWABLE_IMPL_X11 (drawable);

  
  if (!filled &&
      (points[0].x != points[npoints-1].x || points[0].y != points[npoints-1].y))
    {
      tmp_npoints = npoints + 1;
      tmp_points = g_new (XPoint, tmp_npoints);
      tmp_points[npoints].x = points[0].x;
      tmp_points[npoints].y = points[0].y;
    }
  else
    {
      tmp_npoints = npoints;
      tmp_points = g_new (XPoint, tmp_npoints);
    }

  for (i=0; i<npoints; i++)
    {
      tmp_points[i].x = points[i].x;
      tmp_points[i].y = points[i].y;
    }
  
  if (filled)
    XFillPolygon (GDK_SCREEN_XDISPLAY (impl->screen), impl->xid,
		  GDK_GC_GET_XGC (gc), tmp_points, tmp_npoints, Complex, CoordModeOrigin);
  else
    XDrawLines (GDK_SCREEN_XDISPLAY (impl->screen), impl->xid,
		GDK_GC_GET_XGC (gc), tmp_points, tmp_npoints, CoordModeOrigin);

  g_free (tmp_points);
}

/* gdk_x11_draw_text
 *
 * Modified by Li-Da Lho to draw 16 bits and Multibyte strings
 *
 * Interface changed: add "GdkFont *font" to specify font or fontset explicitely
 */
static void
gdk_x11_draw_text (GdkDrawable *drawable,
		   GdkFont     *font,
		   GdkGC       *gc,
		   gint         x,
		   gint         y,
		   const gchar *text,
		   gint         text_length)
{
  GdkDrawableImplX11 *impl;
  Display *xdisplay;

  impl = GDK_DRAWABLE_IMPL_X11 (drawable);
  xdisplay = GDK_SCREEN_XDISPLAY (impl->screen);
  
  if (font->type == GDK_FONT_FONT)
    {
      XFontStruct *xfont = (XFontStruct *) GDK_FONT_XFONT (font);
      XSetFont(xdisplay, GDK_GC_GET_XGC (gc), xfont->fid);
      if ((xfont->min_byte1 == 0) && (xfont->max_byte1 == 0))
	{
	  XDrawString (xdisplay, impl->xid,
		       GDK_GC_GET_XGC (gc), x, y, text, text_length);
	}
      else
	{
	  XDrawString16 (xdisplay, impl->xid,
			 GDK_GC_GET_XGC (gc), x, y, (XChar2b *) text, text_length / 2);
	}
    }
  else if (font->type == GDK_FONT_FONTSET)
    {
      XFontSet fontset = (XFontSet) GDK_FONT_XFONT (font);
      XmbDrawString (xdisplay, impl->xid,
		     fontset, GDK_GC_GET_XGC (gc), x, y, text, text_length);
    }
  else
    g_error("undefined font type\n");
}

static void
gdk_x11_draw_text_wc (GdkDrawable    *drawable,
		      GdkFont	     *font,
		      GdkGC	     *gc,
		      gint	      x,
		      gint	      y,
		      const GdkWChar *text,
		      gint	      text_length)
{
  GdkDrawableImplX11 *impl;
  Display *xdisplay;

  impl = GDK_DRAWABLE_IMPL_X11 (drawable);
  xdisplay = GDK_SCREEN_XDISPLAY (impl->screen);
  
  if (font->type == GDK_FONT_FONT)
    {
      XFontStruct *xfont = (XFontStruct *) GDK_FONT_XFONT (font);
      gchar *text_8bit;
      gint i;
      XSetFont(xdisplay, GDK_GC_GET_XGC (gc), xfont->fid);
      text_8bit = g_new (gchar, text_length);
      for (i=0; i<text_length; i++) text_8bit[i] = text[i];
      XDrawString (xdisplay, impl->xid,
                   GDK_GC_GET_XGC (gc), x, y, text_8bit, text_length);
      g_free (text_8bit);
    }
  else if (font->type == GDK_FONT_FONTSET)
    {
      if (sizeof(GdkWChar) == sizeof(wchar_t))
	{
	  XwcDrawString (xdisplay, impl->xid,
			 (XFontSet) GDK_FONT_XFONT (font),
			 GDK_GC_GET_XGC (gc), x, y, (wchar_t *)text, text_length);
	}
      else
	{
	  wchar_t *text_wchar;
	  gint i;
	  text_wchar = g_new (wchar_t, text_length);
	  for (i=0; i<text_length; i++) text_wchar[i] = text[i];
	  XwcDrawString (xdisplay, impl->xid,
			 (XFontSet) GDK_FONT_XFONT (font),
			 GDK_GC_GET_XGC (gc), x, y, text_wchar, text_length);
	  g_free (text_wchar);
	}
    }
  else
    g_error("undefined font type\n");
}

static void
gdk_x11_draw_drawable (GdkDrawable *drawable,
		       GdkGC       *gc,
		       GdkPixmap   *src,
		       gint         xsrc,
		       gint         ysrc,
		       gint         xdest,
		       gint         ydest,
		       gint         width,
		       gint         height)
{
  int src_depth = gdk_drawable_get_depth (src);
  int dest_depth = gdk_drawable_get_depth (drawable);
  GdkDrawableImplX11 *impl;
  GdkDrawableImplX11 *src_impl;
  
  impl = GDK_DRAWABLE_IMPL_X11 (drawable);

  if (GDK_IS_DRAWABLE_IMPL_X11 (src))
    src_impl = GDK_DRAWABLE_IMPL_X11 (src);
  else
    src_impl = NULL;
  
  if (src_depth == 1)
    {
      XCopyArea (GDK_SCREEN_XDISPLAY (impl->screen),
                 src_impl ? src_impl->xid : GDK_DRAWABLE_XID (src),
		 impl->xid,
		 GDK_GC_GET_XGC (gc),
		 xsrc, ysrc,
		 width, height,
		 xdest, ydest);
    }
  else if (dest_depth != 0 && src_depth == dest_depth)
    {
      XCopyArea (GDK_SCREEN_XDISPLAY (impl->screen),
                 src_impl ? src_impl->xid : GDK_DRAWABLE_XID (src),
		 impl->xid,
		 GDK_GC_GET_XGC (gc),
		 xsrc, ysrc,
		 width, height,
		 xdest, ydest);
    }
  else
    g_warning ("Attempt to draw a drawable with depth %d to a drawable with depth %d",
               src_depth, dest_depth);
}

static void
gdk_x11_draw_points (GdkDrawable *drawable,
		     GdkGC       *gc,
		     GdkPoint    *points,
		     gint         npoints)
{
  GdkDrawableImplX11 *impl;

  impl = GDK_DRAWABLE_IMPL_X11 (drawable);

  
  /* We special-case npoints == 1, because X will merge multiple
   * consecutive XDrawPoint requests into a PolyPoint request
   */
  if (npoints == 1)
    {
      XDrawPoint (GDK_SCREEN_XDISPLAY (impl->screen),
		  impl->xid,
		  GDK_GC_GET_XGC (gc),
		  points[0].x, points[0].y);
    }
  else
    {
      gint i;
      XPoint *tmp_points = g_new (XPoint, npoints);

      for (i=0; i<npoints; i++)
	{
	  tmp_points[i].x = points[i].x;
	  tmp_points[i].y = points[i].y;
	}
      
      XDrawPoints (GDK_SCREEN_XDISPLAY (impl->screen),
		   impl->xid,
		   GDK_GC_GET_XGC (gc),
		   tmp_points,
		   npoints,
		   CoordModeOrigin);

      g_free (tmp_points);
    }
}

static void
gdk_x11_draw_segments (GdkDrawable *drawable,
		       GdkGC       *gc,
		       GdkSegment  *segs,
		       gint         nsegs)
{
  GdkDrawableImplX11 *impl;

  impl = GDK_DRAWABLE_IMPL_X11 (drawable);

  
  /* We special-case nsegs == 1, because X will merge multiple
   * consecutive XDrawLine requests into a PolySegment request
   */
  if (nsegs == 1)
    {
      XDrawLine (GDK_SCREEN_XDISPLAY (impl->screen), impl->xid,
		 GDK_GC_GET_XGC (gc), segs[0].x1, segs[0].y1,
		 segs[0].x2, segs[0].y2);
    }
  else
    {
      gint i;
      XSegment *tmp_segs = g_new (XSegment, nsegs);

      for (i=0; i<nsegs; i++)
	{
	  tmp_segs[i].x1 = segs[i].x1;
	  tmp_segs[i].x2 = segs[i].x2;
	  tmp_segs[i].y1 = segs[i].y1;
	  tmp_segs[i].y2 = segs[i].y2;
	}
      
      XDrawSegments (GDK_SCREEN_XDISPLAY (impl->screen),
		     impl->xid,
		     GDK_GC_GET_XGC (gc),
		     tmp_segs, nsegs);

      g_free (tmp_segs);
    }
}

static void
gdk_x11_draw_lines (GdkDrawable *drawable,
		    GdkGC       *gc,
		    GdkPoint    *points,
		    gint         npoints)
{
  gint i;
  XPoint *tmp_points = g_new (XPoint, npoints);
  GdkDrawableImplX11 *impl;

  impl = GDK_DRAWABLE_IMPL_X11 (drawable);

  
  for (i=0; i<npoints; i++)
    {
      tmp_points[i].x = points[i].x;
      tmp_points[i].y = points[i].y;
    }
      
  XDrawLines (GDK_SCREEN_XDISPLAY (impl->screen),
	      impl->xid,
	      GDK_GC_GET_XGC (gc),
	      tmp_points, npoints,
	      CoordModeOrigin);

  g_free (tmp_points);
}

static void
gdk_x11_draw_glyphs (GdkDrawable      *drawable,
		     GdkGC            *gc,
		     PangoFont        *font,
		     gint              x,
		     gint              y,
		     PangoGlyphString *glyphs)
{
  gdk_x11_draw_glyphs_transformed (drawable, gc, NULL,
				   font,
				   x * PANGO_SCALE,
				   y * PANGO_SCALE,
				   glyphs);
}

static void
gdk_x11_draw_glyphs_transformed (GdkDrawable      *drawable,
				 GdkGC            *gc,
				 PangoMatrix      *matrix,
				 PangoFont        *font,
				 gint              x,
				 gint              y,
				 PangoGlyphString *glyphs)
{
  GdkDrawableImplX11 *impl;