gdkdrawable-fb2.c

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	{
	  cur->width -= private->llim_x - cur->x;
	  cur->x = private->llim_x;
	}
      
      if (cur->x + cur->width > private->lim_x)
	{
	  cur->width = private->lim_x - cur->x;
	}

      if (cur->width <= 0)
	cur->width = 0;
    }

  gdk_region_spans_intersect_foreach (real_clip_region,
				      spans,
				      nspans,
				      sorted,
				      gdk_fb_fill_span_helper,
				      &info);

  gdk_region_destroy (real_clip_region);
  if (handle_cursor)
    gdk_fb_cursor_unhide ();
}

void
gdk_fb_drawing_context_init (GdkFBDrawingContext *dc,
			     GdkDrawable *drawable,
			     GdkGC *gc,
			     gboolean draw_bg,
			     gboolean do_clipping)
{
  GdkDrawableFBData *private = GDK_DRAWABLE_FBDATA (drawable);
  dc->mem = private->mem;
  dc->rowstride = private->rowstride;
  dc->handle_cursor = FALSE;
  dc->bgpm = NULL;
  dc->bg_relto = private->wrapper;
  dc->draw_bg = draw_bg;

  GDK_CHECK_IMPL (drawable);

  if (GDK_IS_WINDOW (private->wrapper))
    {
      dc->bgpm = GDK_WINDOW_P (private->wrapper)->bg_pixmap;
      if (dc->bgpm == GDK_PARENT_RELATIVE_BG)
	{
	  for (; dc->bgpm == GDK_PARENT_RELATIVE_BG && dc->bg_relto; dc->bg_relto = (GdkWindow *)GDK_WINDOW_P (dc->bg_relto)->parent)
	    dc->bgpm = GDK_WINDOW_P (dc->bg_relto)->bg_pixmap;
	}

      if (dc->bgpm == GDK_NO_BG)
	dc->bgpm = NULL;
    }
  dc->clipxoff = - private->abs_x;
  dc->clipyoff = - private->abs_y;

  dc->real_clip_region = gdk_fb_clip_region (drawable, gc, do_clipping, TRUE, TRUE);

  if (gc)
    {
      dc->clipxoff -= GDK_GC_FBDATA (gc)->values.clip_x_origin;
      dc->clipyoff -= GDK_GC_FBDATA (gc)->values.clip_y_origin;

      if (GDK_GC_FBDATA (gc)->values.clip_mask)
	{
	  dc->clipmem = GDK_DRAWABLE_IMPL_FBDATA (GDK_GC_FBDATA (gc)->values.clip_mask)->mem;
	  dc->clip_rowstride = GDK_DRAWABLE_IMPL_FBDATA (GDK_GC_FBDATA (gc)->values.clip_mask)->rowstride;
	}
    }

  if (do_clipping &&
      private->mem == GDK_DRAWABLE_IMPL_FBDATA (_gdk_parent_root)->mem &&
      gdk_fb_cursor_region_need_hide (dc->real_clip_region))
    {
      dc->handle_cursor = TRUE;
      gdk_fb_cursor_hide ();
    }
}

void
gdk_fb_drawing_context_finalize (GdkFBDrawingContext *dc)
{
  gdk_region_destroy (dc->real_clip_region);

  if (dc->handle_cursor)
    gdk_fb_cursor_unhide ();
}

void
gdk_fb_draw_drawable_2 (GdkDrawable *drawable,
			GdkGC       *gc,
			GdkPixmap   *src,
			gint         xsrc,
			gint         ysrc,
			gint         xdest,
			gint         ydest,
			gint         width,
			gint         height,
			gboolean     draw_bg,
			gboolean     do_clipping)
{
  GdkFBDrawingContext *dc, dc_data;
  dc = &dc_data;

  GDK_CHECK_IMPL (src);
  GDK_CHECK_IMPL (drawable);
  
  gdk_fb_drawing_context_init (dc, drawable, gc, draw_bg, do_clipping);
  gdk_fb_draw_drawable_3 (drawable, gc, src, dc, xsrc, ysrc, xdest, ydest, width, height);
  gdk_fb_drawing_context_finalize (dc);
}

void
gdk_fb_draw_drawable_3 (GdkDrawable *drawable,
			GdkGC       *gc,
			GdkPixmap   *src,
			GdkFBDrawingContext *dc,
			gint         xsrc,
			gint         ysrc,
			gint         xdest,
			gint         ydest,
			gint         width,
			gint         height)
{
  GdkDrawableFBData *private = GDK_DRAWABLE_FBDATA (drawable);
  GdkDrawableFBData *src_private = GDK_DRAWABLE_FBDATA (src);
  GdkRectangle rect;
  int src_x_off, src_y_off;
  GdkRegion *tmpreg, *real_clip_region;
  int i;
  int draw_direction = 1;
  gdk_fb_draw_drawable_func *draw_func = NULL;
  GdkGCFBData *gc_private;

  g_assert (gc);

  GDK_CHECK_IMPL (src);
  GDK_CHECK_IMPL (drawable);

  if (GDK_IS_WINDOW (private->wrapper))
    {
      if (!GDK_WINDOW_IS_MAPPED (private->wrapper))
	return;
      if (GDK_WINDOW_P (private->wrapper)->input_only)
	g_error ("Drawing on the evil input-only!");
    }

  gc_private = GDK_GC_FBDATA (gc);
  
  if (drawable == src)
    {
      GdkRegionBox srcb, destb;
      srcb.x1 = xsrc;
      srcb.y1 = ysrc;
      srcb.x2 = xsrc + width;
      srcb.y2 = ysrc + height;
      destb.x1 = xdest;
      destb.y1 = ydest;
      destb.x2 = xdest + width;
      destb.y2 = ydest + height;

      if (EXTENTCHECK (&srcb, &destb) && ((ydest > ysrc) || ((ydest == ysrc) && (xdest > xsrc))))
	draw_direction = -1;
    }

  switch (src_private->depth)
    {
    case 1:
      draw_func = gc_private->draw_drawable[GDK_FB_SRC_BPP_1];
      break;
    case 8:
      draw_func = gc_private->draw_drawable[GDK_FB_SRC_BPP_8];
      break;
    case 16:
      draw_func = gc_private->draw_drawable[GDK_FB_SRC_BPP_16];
      break;
    case 24:
      draw_func = gc_private->draw_drawable[GDK_FB_SRC_BPP_24];
      break;
    case 32:
      draw_func = gc_private->draw_drawable[GDK_FB_SRC_BPP_32];
      break;
    case 77:
      draw_func = gc_private->draw_drawable[GDK_FB_SRC_BPP_7_AA_GRAYVAL];
      break;
    case 78:
      draw_func = gc_private->draw_drawable[GDK_FB_SRC_BPP_8_AA_GRAYVAL];
      break;
    default:
      g_assert_not_reached ();
      break;
    }
  
  /* Do some magic to avoid creating extra regions unnecessarily */
  tmpreg = dc->real_clip_region;

  rect.x = xdest + private->abs_x;
  rect.y = ydest + private->abs_y;
  rect.width = width;
  rect.height = height;
  real_clip_region = gdk_region_rectangle (&rect);
  gdk_region_intersect (real_clip_region, tmpreg);

  rect.x = xdest + private->abs_x;
  rect.y = ydest + private->abs_y;
  rect.width = MAX (src_private->width - xsrc, 0);
  rect.height = MAX (src_private->height - ysrc, 0);
  if (!rect.width || !rect.height)
    goto out;
  tmpreg = gdk_region_rectangle (&rect);
  gdk_region_intersect (real_clip_region, tmpreg);
  gdk_region_destroy (tmpreg);

  src_x_off = (src_private->abs_x + xsrc) - (private->abs_x + xdest);
  src_y_off = (src_private->abs_y + ysrc) - (private->abs_y + ydest);

  for (i = (draw_direction>0)?0:real_clip_region->numRects-1; i >= 0 && i < real_clip_region->numRects; i+=draw_direction)
    {
      GdkRegionBox *cur = &real_clip_region->rects[i];

      (*draw_func) (drawable,
		    gc,
		    src,
		    dc,
		    cur->y1,
		    cur->y2,
		    cur->x1,
		    cur->x2,
		    src_x_off,
		    src_y_off,
		    draw_direction);
    }

 out:
  gdk_region_destroy (real_clip_region);
}


void
gdk_fb_draw_drawable (GdkDrawable *drawable,
		      GdkGC       *gc,
		      GdkPixmap   *src,
		      gint         xsrc,
		      gint         ysrc,
		      gint         xdest,
		      gint         ydest,
		      gint         width,
		      gint         height)
{
  GdkPixmap   *src_impl;

  if (GDK_IS_DRAWABLE_IMPL_FBDATA (src))
    src_impl = src;
  else
    src_impl = GDK_DRAWABLE_IMPL (src);

  GDK_CHECK_IMPL (drawable);
  
  gdk_fb_draw_drawable_2 (drawable, gc, src_impl , xsrc, ysrc, xdest, ydest, width, height, TRUE, TRUE);
}

#ifdef EMULATE_GDKFONT
static void
gdk_fb_draw_text(GdkDrawable    *drawable,
		 GdkFont        *font,
		 GdkGC          *gc,
		 gint            x,
		 gint            y,
		 const gchar    *text,
		 gint            text_length)
{
  GdkFontPrivateFB *private;
  guchar *utf8, *utf8_end;
  PangoGlyphString *glyphs = pango_glyph_string_new ();
  PangoEngineShape *shaper, *last_shaper;
  PangoAnalysis analysis;
  guchar *p, *start;
  gint x_offset;
  int i;
  
  g_return_if_fail (font != NULL);
  g_return_if_fail (text != NULL);

  private = (GdkFontPrivateFB*) font;

  utf8 = alloca (text_length*2);

  /* Convert latin-1 to utf8 */
  p = utf8;
  for (i = 0; i < text_length; i++)
    {
      if (text[i]==0)
	*p++ = 1; /* Hack to handle embedded nulls */
      else
	{
	  if(((guchar)text[i])<128)
	    *p++ = text[i];
	  else
	    {
	      *p++ = ((((guchar)text[i])>>6) & 0x3f) | 0xC0;
	      *p++ = (((guchar)text[i]) & 0x3f) | 0x80;
	    }
	}
    }
  utf8_end = p;

  last_shaper = NULL;
  shaper = NULL;

  x_offset = 0;
  p = start = utf8;
  while (p < utf8_end)
    {
      gunichar wc = g_utf8_get_char (p);
      p = g_utf8_next_char (p);
      shaper = pango_font_find_shaper (private->pango_font, pango_language_from_string ("fr"), wc);
      if (shaper != last_shaper)
	{
	  analysis.shape_engine = shaper;
	  analysis.lang_engine = NULL;
	  analysis.font = private->pango_font;
	  analysis.level = 0;
	  
	  pango_shape (start, p - start, &analysis, glyphs);

	  gdk_fb_draw_glyphs (drawable, gc, private->pango_font,
			      x + PANGO_PIXELS (x_offset), y,
			      glyphs);
	  
	  for (i = 0; i < glyphs->num_glyphs; i++)
	    x_offset += glyphs->glyphs[i].geometry.width;
	  
	  start = p;
	}

      last_shaper = shaper;
    }

  if (p > start)
    {
      analysis.shape_engine = shaper;
      analysis.lang_engine = NULL;
      analysis.font = private->pango_font;
      analysis.level = 0;
      
      pango_shape (start, p - start, &analysis, glyphs);
      
      gdk_fb_draw_glyphs (drawable, gc, private->pango_font,
			  x + PANGO_PIXELS (x_offset), y,
			  glyphs);
    }
  
  pango_glyph_string_free (glyphs);
      
  return;
}

#else
static void
gdk_fb_draw_text(GdkDrawable    *drawable,
		 GdkFont        *font,
		 GdkGC          *gc,
		 gint            x,
		 gint            y,
		 const gchar    *text,
		 gint            text_length)
{
  g_warning ("gdk_fb_draw_text NYI");
}
#endif

static void
gdk_fb_draw_text_wc (GdkDrawable    *drawable,
		     GdkFont	     *font,
		     GdkGC	     *gc,
		     gint	      x,
		     gint	      y,
		     const GdkWChar *text,
		     gint	      text_length)
{
  g_warning ("gdk_fb_draw_text_wc NYI");
}

void
gdk_fb_draw_rectangle (GdkDrawable    *drawable,
		       GdkGC          *gc,
		       gboolean        filled,
		       gint            x,
		       gint            y,
		       gint            width,
		       gint            height)
{
  GdkDrawableFBData *private;
  
  private = GDK_DRAWABLE_FBDATA (drawable);
  
  if (filled)
    {
      gboolean handle_cursor = FALSE;
      GdkRectangle tmprect;
      GdkRegion *tmpreg;
      GdkRegion *real_clip_region;
      GdkColor color;
      int i;
      
      if (GDK_GC_FBDATA (gc)->values_mask & GDK_GC_FOREGROUND)
	color = GDK_GC_FBDATA (gc)->values.foreground;
      else if (GDK_IS_WINDOW (private->wrapper))
	color = GDK_WINDOW_P (private->wrapper)->bg_color;
      else
	gdk_color_black (private->colormap, &color);
      
      real_clip_region = gdk_fb_clip_region (drawable, gc, TRUE, GDK_GC_FBDATA (gc)->values.function != GDK_INVERT, TRUE);
      
      if (private->mem == GDK_DRAWABLE_IMPL_FBDATA (_gdk_parent_root)->mem &&
	  gdk_fb_cursor_region_need_hide (real_clip_region))
	{
	  handle_cursor = TRUE;
	  gdk_fb_cursor_hide ();
	}
      
      x += private->abs_x;
      y += private->abs_y;
  
      if (x <  private->llim_x)
	{
	  width -= private->llim_x - x;
	  x = private->llim_x;
	}
      if (x + width >  private->lim_x)
	width =  private->lim_x - x;
      
      if (y <  private->llim_y)
	{
	  height -= private->llim_y - y;
	  y = private->llim_y;
	}
      if (y + height >  private->lim_y)
	height =  private->lim_y - y;

      tmprect.x = x;
      tmprect.y = y;
      tmprect.width = width;
      tmprect.height = height;
      tmpreg = gdk_region_rectangle (&tmprect);
      
      gdk_region_intersect (tmpreg, real_clip_region);
      
      for (i = 0; i < tmpreg->numRects; i++)
	{
	  GdkRectangle r;
	  r.x = tmpreg->rects[i].x1;
	  r.y = tmpreg->rects[i].y1;
	  r.width = tmpreg->rects[i].x2 - tmpreg->rects[i].x1;
	  r.height = tmpreg->rects[i].y2 - tmpreg->rects[i].y1;

	  if ((r.width > 0) && (r.height > 0))
	    (GDK_GC_FBDATA (gc)->fill_rectangle) (drawable, gc, &r, &color);
	}
      
      gdk_region_destroy (tmpreg);
      
      gdk_region_destroy (real_clip_region);
      if (handle_cursor)
	gdk_fb_cursor_unhide ();
    }
  else
    {
      GdkPoint pts[5];
      
      pts[0].x = pts[4].x = x;
      pts[0].y = pts[4].y = y;
      pts[1].x = x + width;
      pts[1].y = y;
      pts[2].x = x + width;
      pts[2].y = y + height;
      pts[3].x = x;
      pts[3].y = y + height;
      gdk_fb_draw_lines (drawable, gc, pts, 5);
    }

}

static void
gdk_fb_draw_points (GdkDrawable    *drawable,
		    GdkGC          *gc,
		    GdkPoint       *points,
		    gint            npoints)
{
  GdkSpan *spans = g_alloca (npoints * sizeof(GdkSpan));
  int i;

  for (i = 0; i < npoints; i++)
    {
      spans[i].x = points[i].x;
      spans[i].y = points[i].y;
      spans[i].width = 1;
    }

  gdk_fb_fill_spans (drawable, gc, spans, npoints, FALSE);
}

static void
gdk_fb_draw_arc (GdkDrawable    *drawable,
		 GdkGC          *gc,
		 gboolean        filled,
		 gint            x,
		 gint            y,
		 gint            width,
		 gint            height,
		 gint            angle1,
		 gint            angle2)
{
  miArc arc;

  arc.x = x;
  arc.y = y;
  arc.width = width;
  arc.height = height;
  arc.angle1 = angle1;
  arc.angle2 = angle2;

  if (filled)
    miPolyFillArc (drawable, gc, 1, &arc);
  else
    miPolyArc (drawable, gc, 1, &arc);
}

static void
gdk_fb_draw_polygon (GdkDrawable    *drawable,
		     GdkGC          *gc,
		     gboolean        filled,
		     GdkPoint       *points,
		     gint            npoints)
{
  if (filled)
    miFillPolygon (drawable, gc, 0, 0, npoints, points);
  else
    {
      gint tmp_npoints;
      gboolean free_points = FALSE;
      GdkPoint *tmp_points;

      if (points[0].x != points[npoints-1].x || points[0].y != points[npoints-1].y)
	{
	  tmp_npoints = npoints + 1;
	  tmp_points = g_new (GdkPoint, tmp_npoints);
	  free_points = TRUE;
	  memcpy (tmp_points, points, sizeof(GdkPoint) * npoints);
	  tmp_points[npoints].x = points[0].x;
	  tmp_points[npoints].y = points[0].y;