Adaptation des ent�tes.

Le d�faut pour composerotation et composescale est 'vrai'.
Adaptation pour l'utilisation du module couleur interne.
Correction de bug lors du clonage.
Correction d'une imprecision de bounding box.
Am�nagement de la m�thode Coords.

1 files changed, 933 insertions, 0 deletions

diff --git a/generic/Text.c b/generic/Text.c
new file mode 100644
index 0000000..6b0b4d0
--- /dev/null
+++ b/generic/Text.c
@@ -0,0 +1,933 @@
+/*
+ * Text.c -- Implementation of Text item.
+ *
+ * Authors		: Patrick LECOANET
+ * Creation date	: Sat Mar 25 13:58:39 1995
+ */
+
+/*
+ *  Copyright (c) 1993 - 1999 CENA, Patrick Lecoanet --
+ *
+ * This code is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This code is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this code; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+
+#include <math.h>
+#include <ctype.h>
+#include <X11/Xatom.h>
+#include <malloc.h>
+#include <string.h>
+
+#include "Item.h"
+#include "Geo.h"
+#include "Draw.h"
+#include "Types.h"
+#include "WidgetInfo.h"
+
+
+static const char rcsid[] = "$Imagine: Text.c,v 1.13 1997/05/15 11:35:46 lecoanet Exp $";
+static const char compile_id[] = "$Compile: " __FILE__ " " __DATE__ " " __TIME__ " $";
+
+
+static Bool got_selection = True;
+
+
+/*
+ * Bit offset of flags.
+ */
+#define UNDERLINED	1
+#define OVERSTRIKED	2
+#define HAS_FOCUS	4	/* True if the text has the focus and should display
+				 * the insertion cursor */
+
+
+/*
+ **********************************************************************************
+ *
+ * Specific Text item record
+ *
+ **********************************************************************************
+ */
+typedef struct _TextLineInfo 
+{
+  char		*start;		/* Index of first char in line */
+  int		num_chars;	/* Number of displayed chars in line */
+  RadarPoint	text_origin;	/* X pos for drawing the line */
+  int		width;		/* Line width in pixels */
+} TextLineInfoStruct, *TextLineInfo;
+
+typedef struct _TextItemStruct {
+  ItemStruct	header;
+
+  /* Public data */
+  RadarPoint	pos;
+  RadarAnchor	anchor;
+  RadarAnchor	connection_anchor;
+  RadarColor	color;
+  RadarColor	fill_color;
+  char		*text;
+  Pixmap	fill_pattern;
+  RadarFont	font;
+  RadarJustify	alignment;
+  int		width;
+  int		spacing;
+  unsigned char	flags;
+
+  /* Private data */
+  RadarPoint	pos_dev;
+  int		insert_index;
+  int		sel_start;
+  int		sel_end;
+  RadarList	text_info;
+  int		max_width;
+} TextItemStruct, *TextItem;
+
+
+static RadarAttrConfig	text_attrs[] = {
+  { RADAR_CONFIG_JUSTIFY, "-alignment", NULL,
+    Tk_Offset(TextItemStruct, alignment), 0,
+    RADAR_COORDS_FLAG|RADAR_LAYOUT_FLAG, False },
+  { RADAR_CONFIG_ANCHOR, "-anchor", NULL,
+    Tk_Offset(TextItemStruct, anchor), 0, RADAR_COORDS_FLAG, False },
+  { RADAR_CONFIG_COLOR, "-color", NULL,
+    Tk_Offset(TextItemStruct, color), 0, RADAR_DRAW_FLAG, False },
+  { RADAR_CONFIG_BOOL, "-composerotation", NULL,
+    Tk_Offset(TextItemStruct, header.flags), COMPOSE_ROTATION_BIT,
+    RADAR_COORDS_FLAG, False },
+  { RADAR_CONFIG_BOOL, "-composescale", NULL,
+    Tk_Offset(TextItemStruct, header.flags), COMPOSE_SCALE_BIT,
+    RADAR_COORDS_FLAG, False },
+  { RADAR_CONFIG_ITEM, "-connecteditem", NULL,
+    Tk_Offset(TextItemStruct, header.connected_item), 0,
+    RADAR_COORDS_FLAG|RADAR_ITEM_FLAG, False },
+  { RADAR_CONFIG_ANCHOR, "-connectionanchor", NULL,
+    Tk_Offset(TextItemStruct, connection_anchor), 0, RADAR_COORDS_FLAG, False },
+  { RADAR_CONFIG_COLOR, "-fillcolor", NULL,
+    Tk_Offset(TextItemStruct, fill_color), 0, RADAR_DRAW_FLAG, False },
+  { RADAR_CONFIG_PATTERN, "-fillpattern", NULL,
+    Tk_Offset(TextItemStruct, fill_pattern), 0, RADAR_DRAW_FLAG, False },
+  { RADAR_CONFIG_FONT, "-font", NULL,
+    Tk_Offset(TextItemStruct, font), 0,
+    RADAR_COORDS_FLAG|RADAR_LAYOUT_FLAG, False },
+  { RADAR_CONFIG_BOOL, "-overstriked", NULL,
+    Tk_Offset(TextItemStruct, flags), OVERSTRIKED, RADAR_DRAW_FLAG, False },
+  { RADAR_CONFIG_POINT, "-position", NULL, Tk_Offset(TextItemStruct, pos), 0,
+    RADAR_COORDS_FLAG, False},
+  { RADAR_CONFIG_PRI, "-priority", NULL,
+    Tk_Offset(TextItemStruct, header.priority), 0,
+    RADAR_DRAW_FLAG|RADAR_REPICK_FLAG, False },
+  { RADAR_CONFIG_BOOL, "-sensitive", NULL,
+    Tk_Offset(TextItemStruct, header.flags), SENSITIVE_BIT,
+    RADAR_REPICK_FLAG, False },
+  { RADAR_CONFIG_DIM, "-spacing", NULL,
+    Tk_Offset(TextItemStruct, spacing), 0,
+    RADAR_COORDS_FLAG|RADAR_LAYOUT_FLAG, False },
+  { RADAR_CONFIG_TAGS, "-tags", NULL,
+    Tk_Offset(TextItemStruct, header.tags), 0, 0, False },
+  { RADAR_CONFIG_TEXT, "-text", NULL,
+    Tk_Offset(TextItemStruct, text), 0,
+    RADAR_COORDS_FLAG|RADAR_LAYOUT_FLAG, False },
+  { RADAR_CONFIG_BOOL, "-underlined", NULL,
+    Tk_Offset(TextItemStruct, flags), UNDERLINED, RADAR_DRAW_FLAG, False },
+  { RADAR_CONFIG_BOOL, "-visible", NULL,
+    Tk_Offset(TextItemStruct, header.flags), VISIBLE_BIT,
+    RADAR_DRAW_FLAG|RADAR_REPICK_FLAG|RADAR_VIS_FLAG, False },
+  { RADAR_CONFIG_INT, "-width", NULL,
+    Tk_Offset(TextItemStruct, width), 0,
+    RADAR_COORDS_FLAG|RADAR_LAYOUT_FLAG, False },
+  
+  { RADAR_CONFIG_END, NULL, NULL, 0, 0, 0 }
+};
+
+
+/*
+ **********************************************************************************
+ *
+ * Init --
+ *
+ **********************************************************************************
+ */
+static int
+Init(Item	item,
+     int	*argc,
+     Arg	**args)
+{
+  WidgetInfo	*wi = item->wi;
+  TextItem	text = (TextItem) item;
+
+  text->text_info = NULL;
+  
+  /* Init attributes */
+  SET(item->flags, VISIBLE_BIT);
+  SET(item->flags, SENSITIVE_BIT);
+  SET(item->flags, COMPOSE_ROTATION_BIT);
+  SET(item->flags, COMPOSE_SCALE_BIT);
+  item->priority = DEFAULT_TEXT_PRIORITY;
+
+  text->pos.x = text->pos.y = 0.0;
+  text->text = "";
+  text->fill_pattern = RadarUnspecifiedPattern;
+  text->anchor = RadarAnchorNW;
+  text->connection_anchor = RadarAnchorSW;
+  text->color = RadarGetColorByValue(wi->win, wi->fore_color);
+  text->fill_color = RadarGetColorByValue(wi->win, wi->back_color);
+  text->alignment = RadarJustifyLeft;
+  text->font = Tk_GetFont(wi->interp, wi->win, Tk_NameOfFont(wi->font));
+  text->width = 0;
+  text->spacing = 0;
+  
+  text->insert_index = 0;
+  text->sel_start = 0;
+  text->sel_end = 0;
+  CLEAR(text->flags, UNDERLINED);
+  CLEAR(text->flags, OVERSTRIKED);
+  CLEAR(text->flags, HAS_FOCUS);
+
+  return RADAR_OK;
+}
+
+
+/*
+ **********************************************************************************
+ *
+ * Clone --
+ *
+ **********************************************************************************
+ */
+static void
+Clone(Item	item)
+{
+  TextItem	text = (TextItem) item;
+  WidgetInfo	*wi = item->wi;
+  char		*str;
+
+  if (strlen(text->text) != 0) {
+    str = RadarMalloc((strlen(text->text) + 1) * sizeof(char));
+    strcpy(str, text->text);
+    text->text = str;
+  }
+  if (text->fill_pattern != RadarUnspecifiedPattern) {
+    text->fill_pattern = Tk_GetBitmap(wi->interp, wi->win,
+				      Tk_NameOfBitmap(wi->dpy, text->fill_pattern));
+  }
+  text->color = RadarGetColorByValue(wi->win, text->color);
+  text->fill_color = RadarGetColorByValue(wi->win, text->fill_color);
+  text->font = Tk_GetFont(wi->interp, wi->win, Tk_NameOfFont(text->font));
+  
+  if (text->text_info) {
+    text->text_info = RadarListDuplicate(text->text_info);
+  }
+  else {
+    /*
+     * Needed in case the layout of the model has not been
+     * done yet.
+     */
+    SET(item->inv_flags, RADAR_LAYOUT_FLAG);
+  }
+}
+
+
+/*
+ **********************************************************************************
+ *
+ * Destroy --
+ *
+ **********************************************************************************
+ */
+static void
+Destroy(Item	item)
+{
+  WidgetInfo	*wi = item->wi;
+  TextItem	text = (TextItem) item;
+
+  if (strlen(text->text) != 0) {
+    RadarFree(text->text);
+  }
+  if (text->fill_pattern != RadarUnspecifiedPattern) {
+    Tk_FreeBitmap(wi->dpy, text->fill_pattern);
+    text->fill_pattern = RadarUnspecifiedPattern;
+  }
+  RadarFreeColor(text->color);
+  RadarFreeColor(text->fill_color);
+  Tk_FreeFont(text->font);
+  
+  if (text->text_info) {
+    RadarListFree(text->text_info);
+  }
+}
+
+
+/*
+ **********************************************************************************
+ *
+ * Configure --
+ *
+ **********************************************************************************
+ */
+static int
+Configure(Item		item,
+	  int		argc,
+	  RadarAttrList	argv,
+	  int		*flags)
+{
+  Item		old_connected;
+
+  old_connected = item->connected_item;
+  if (ITEM_P.ConfigureAttributes((char *) item, -1, argc, argv, flags) == RADAR_ERROR) {
+    return RADAR_ERROR;
+  }  
+  if (ISSET(*flags, RADAR_ITEM_FLAG)) {
+    /*
+     * If the new connected item is not appropriate back up
+     * to the old one.
+     */
+    if ((item->connected_item == RADAR_NO_ITEM) ||
+	(item->connected_item->class->has_anchors &&
+	 (item->parent == item->connected_item->parent))) {
+      ITEM.UpdateItemDependency(item, old_connected);
+    }
+    else {
+      item->connected_item = old_connected;
+    }
+  }  
+
+  return RADAR_OK;
+}
+
+
+/*
+ **********************************************************************************
+ *
+ * Query --
+ *
+ **********************************************************************************
+ */
+static int
+Query(Item		item,
+      int		argc,
+      RadarAttrList	argv)
+{
+  if (ITEM_P.QueryAttribute((char *) item, -1, argv[0]) == RADAR_ERROR) {
+    return RADAR_ERROR;
+  }  
+
+  return RADAR_OK;
+}
+
+
+/*
+ **********************************************************************************
+ *
+ * ComputeCoordinates --
+ *
+ **********************************************************************************
+ */
+static void
+ComputeCoordinates(Item		item,
+		   RadarBool	force)
+{
+  WidgetInfo	*wi = item->wi;
+  TextItem	text = (TextItem) item;
+  TextLineInfo	infos;
+  Tk_FontMetrics fm;
+  int		i, num_lines;
+  int		cur_dy;
+  int		font_height, height;
+  
+  ResetBBox(&item->item_bounding_box);
+  if (strlen(text->text) == 0) {
+    return;
+  }
+
+  Tk_GetFontMetrics(text->font, &fm);
+  font_height = fm.ascent+fm.descent;
+  
+  /*
+   * The layout need not be done each time the item is moved, scaled
+   * or rotated.
+   */
+  if (ISSET(item->inv_flags, RADAR_LAYOUT_FLAG)) {
+    char	*scan;
+    int		wrap, line_index, prev_num_lines;
+    
+    /*printf("layout\n");*/
+    text->max_width = 0;
+    if (text->text_info != NULL) {
+      prev_num_lines = RadarListSize(text->text_info);
+      RadarListEmpty(text->text_info);
+    }
+    else {
+      prev_num_lines = 0;
+      text->text_info = RadarListNew(1, sizeof(TextLineInfoStruct));
+    }
+    
+    if (text->width > 0) {
+      wrap = text->width;
+    }
+    else {
+      wrap = 100000;
+    }
+    
+    scan = text->text;
+    while (*scan) {
+      TextLineInfoStruct	info;
+      char			*ptr;
+      int			num;
+      
+      line_index = scan - text->text;
+      /*
+       * Limit the excursion of Tk_MeasureChars to the end
+       * of the line. Do not include \n in the measure done.
+       */
+      ptr = strchr(scan, '\n');
+      if (ptr) {
+	num = ptr-scan;
+      }
+      else {
+	num = strlen(scan);
+      }
+      info.num_chars = Tk_MeasureChars(text->font, scan, num, wrap,
+				       TK_WHOLE_WORDS|TK_AT_LEAST_ONE, &info.width);
+      /*
+       * Adjust for the newline at the end of line.
+       */
+      if (ptr) {
+	info.num_chars++;
+      }
+      info.start = scan;
+      text->max_width = MAX(info.width, text->max_width);
+      
+      scan += info.num_chars;
+      /* Build a line info even for an empty line
+       * at the end of text or for an empty text.
+       * It is needed to enable selection and cursor
+       * insertion to behave correctly.
+       */
+      RadarListAdd(text->text_info, &info, RadarListTail);
+      /*printf("adding a line : %s, num_chars :  %d, width : %d\n",
+	info.start, info.num_chars, info.width);*/
+      
+      /*
+       * Skip terminating space or return char if any.
+       */
+      if (isspace(*scan) || *scan == '\n') {
+	scan++;
+      }
+    }
+  
+    /*
+     * Compute x & y positions for all lines in text_info. The coordinates are
+     * in text natural units NOT transformed units.
+     */
+    cur_dy = fm.ascent;
+    num_lines = RadarListSize(text->text_info);
+    infos = (TextLineInfo) RadarListArray(text->text_info);
+    
+    for (i = 0; i < num_lines; i++) {
+      switch (text->alignment) {
+      case RadarJustifyLeft:
+	infos[i].text_origin.x = 0;
+	break;
+      case RadarJustifyCenter:
+	infos[i].text_origin.x = (text->max_width + 1 - infos[i].width)/2;
+	break;
+      case RadarJustifyRight:
+	infos[i].text_origin.x = text->max_width + 1 - infos[i].width;
+	break;
+      }
+      infos[i].text_origin.y = cur_dy;
+      cur_dy += font_height + text->spacing;
+      /*printf("fixing line %d x : %f, y : %f\n", i, infos[i].text_origin.x,
+	infos[i].text_origin.y);*/
+    }
+  } /* ISSET(item->inv_flags, INV_TEXT_LAYOUT) */
+    
+  num_lines = RadarListSize(text->text_info);
+  height = num_lines * font_height + (num_lines-1) * text->spacing;
+
+  /*
+   * The connected item support anchors, this is checked by
+   * configure.
+   */
+  if (item->connected_item != RADAR_NO_ITEM) {
+    item->connected_item->class->GetAnchor(item->connected_item,
+					   text->connection_anchor,
+					   &text->pos_dev);
+  }
+  else {
+    RadarTransformPoint(wi->current_transfo, &text->pos, &text->pos_dev);
+  }
+  
+  Anchor2Origin(&text->pos_dev, text->max_width, height, text->anchor,
+		&text->pos_dev);
+ 
+  /*
+   * Compute the bounding box.
+   */
+  AddPointToBBox(&item->item_bounding_box, text->pos_dev.x, text->pos_dev.y);
+  AddPointToBBox(&item->item_bounding_box, text->pos_dev.x+text->max_width+1,
+		 text->pos_dev.y+height);
+  item->item_bounding_box.orig.x -= 1;
+  item->item_bounding_box.orig.y -= 1;
+  item->item_bounding_box.corner.x += 1;
+  item->item_bounding_box.corner.y += 1;
+
+  /*
+   * Update connected items.
+   */
+  SET(item->flags, UPDATE_DEPENDENT_BIT);
+}
+
+
+/*
+ **********************************************************************************
+ *
+ * ToArea --
+ *	Tell if the object is entirely outside (-1),
+ *	entirely inside (1) or in between (0).
+ *
+ **********************************************************************************
+ */
+static int
+ToArea(Item		item,
+       RadarBBox	*area,
+       Tk_Uid		tag_uid,
+       int		enclosed,
+       RadarBool	report)
+{
+  TextItem	text = (TextItem) item;
+  int		inside = -1;
+  RadarBool	first_done = False;
+  int		num_lines, i;
+  TextLineInfo	lines, lines_ptr;
+  Tk_FontMetrics fm;
+  int		font_height;
+  RadarBBox	line_bbox;
+  RadarPoint	o;
+
+  lines = (TextLineInfo) RadarListArray(text->text_info);
+  num_lines = RadarListSize(text->text_info);
+  Tk_GetFontMetrics(text->font, &fm);
+  font_height = fm.descent + fm.ascent;
+  if (text->spacing > 0) {
+    font_height += text->spacing;
+  }
+
+  /*printf("text %d, num lines=%d\n", item->id, num_lines);*/
+  for (i = 0, lines_ptr = lines; i < num_lines; i++, lines_ptr++) {
+    ResetBBox(&line_bbox);
+    o.x = text->pos_dev.x + lines_ptr->text_origin.x;
+    o.y = text->pos_dev.y + lines_ptr->text_origin.y - fm.ascent;
+    AddPointToBBox(&line_bbox, o.x, o.y);
+    AddPointToBBox(&line_bbox, o.x + lines_ptr->width, o.y + font_height);
+    if (!first_done) {
+      first_done = True;
+      inside = BBoxInBBox(&line_bbox, area);
+      if (inside == 0) {
+	return 0;
+      }
+    }
+    else {
+      if (BBoxInBBox(&line_bbox, area) == 0) {
+	return 0;
+      }
+    }
+  }
+
+  return inside;
+}
+  
+
+/*
+**********************************************************************************
+ *
+ * Draw --
+ *
+ **********************************************************************************
+ */
+static void
+Draw(Item	item)
+{
+  WidgetInfo	*wi = item->wi;
+  TextItem	text = (TextItem) item;
+  XGCValues  	values;
+  int		gc_mask = 0;
+  Tk_FontMetrics fm;
+  int		font_height;  
+  int		num_lines, i, line_index, char_index;
+  TextLineInfo	lines, lines_ptr;
+  int		underline_thickness, underline_pos, overstrike_pos;
+  int		sel_first_line = -1, sel_last_line = -1, cursor_line = -1;
+  int		sel_start_offset, sel_stop_offset, cursor_offset;
+  
+  lines = (TextLineInfo) RadarListArray(text->text_info);
+  num_lines = RadarListSize(text->text_info);
+  Tk_GetFontMetrics(text->font, &fm);
+  font_height = fm.ascent+fm.descent;
+  
+  /*
+   * Compute the selection and the cursor geometry.
+   */
+  for (i = 0, lines_ptr = lines; i < num_lines; i++, lines_ptr++) {
+    /*
+     * Mark the line with the cursor and compute its
+     * position along the X axis.
+     */
+    line_index = lines_ptr->start - text->text;
+    if (ISSET(text->flags, HAS_FOCUS) &&
+	text->insert_index >= line_index &&
+	text->insert_index <= line_index + lines_ptr->num_chars) {
+      cursor_line = i;
+      cursor_offset = Tk_TextWidth(text->font, (char *) lines_ptr->start,
+				   text->insert_index - line_index);
+    }
+
+    /*
+     * Compute the selection first and last line as well as
+     * the positions along the X axis.
+     */
+    if (text->sel_end >= line_index &&
+	text->sel_start <= line_index + lines_ptr->num_chars) {
+      if (sel_first_line < 0) {
+	char_index = text->sel_start - line_index;
+	if (char_index <= 0) {
+	  sel_first_line = i;
+	  sel_start_offset = 0;
+	  //printf("sel_start_offset 1 : %d\n", sel_start_offset);
+	}
+	else if (char_index <= lines_ptr->num_chars) {
+	  sel_first_line = i;
+	  sel_start_offset = Tk_TextWidth(text->font, (char *) lines_ptr->start, char_index);
+	  //printf("sel_start_offset 2 : %d\n", sel_start_offset);
+	}
+      }
+      char_index = text->sel_end - line_index;
+      sel_last_line = i;
+      if (char_index == lines_ptr->num_chars+1)
+	sel_stop_offset = lines_ptr->width;
+      else if (char_index <= lines_ptr->num_chars)
+	sel_stop_offset = Tk_TextWidth(text->font, (char *) lines_ptr->start, char_index);
+    }
+  }
+
+  /*printf("sel 1st : %d offset : %d, sel last : %d offset : %d\n",
+    sel_first_line, sel_start_offset, sel_last_line, sel_stop_offset);*/
+  /*
+   * Setup the gc for the selection and fill the selection.
+   */
+  if ((sel_first_line >= 0) && got_selection) {
+    int x, y;
+    
+    values.foreground = RadarPixel(text->fill_color);
+    values.fill_style = FillSolid;
+    XChangeGC(wi->dpy, wi->gc, GCFillStyle | GCForeground, &values);
+    
+    if (sel_first_line == sel_last_line) {
+      x = (int)(text->pos_dev.x + lines[sel_first_line].text_origin.x + sel_start_offset);
+      y = (int)(text->pos_dev.y + lines[sel_first_line].text_origin.y - fm.ascent);
+      XFillRectangle(wi->dpy, wi->draw_buffer, wi->gc, x, y,
+		     sel_stop_offset - sel_start_offset, font_height);
+    }
+    else {
+      x = (int)(text->pos_dev.x + lines[sel_first_line].text_origin.x + sel_start_offset);
+      y = (int)(text->pos_dev.y + lines[sel_first_line].text_origin.y - fm.ascent);
+      XFillRectangle(wi->dpy, wi->draw_buffer, wi->gc,
+		     x, y, lines[sel_first_line].width - sel_start_offset, font_height);
+      for (i = sel_first_line+1, lines_ptr = &lines[sel_first_line+1];
+	   i < sel_last_line; i++, lines_ptr++) {
+	x = (int)(text->pos_dev.x + lines_ptr->text_origin.x);
+	y = (int)(text->pos_dev.y + lines_ptr->text_origin.y - fm.ascent);
+	XFillRectangle(wi->dpy, wi->draw_buffer, wi->gc,
+		       x, y, lines_ptr->width, font_height);
+      }
+      x = (int)text->pos_dev.x;
+      y = (int)(text->pos_dev.y + lines[sel_last_line].text_origin.y - fm.ascent);
+      XFillRectangle(wi->dpy, wi->draw_buffer, wi->gc,
+		     x, y, sel_stop_offset, font_height);
+    }
+  }
+
+  /*
+   * Setup the gc to render the text and draw it.
+   */
+  values.font = RadarFontId(text->font);
+  values.foreground = RadarPixel(text->color);
+  gc_mask = GCFont | GCForeground;
+  if (text->fill_pattern != RadarUnspecifiedPattern) {
+    values.fill_style = FillStippled;
+    values.stipple = text->fill_pattern;
+    gc_mask |= GCFillStyle | GCStipple;
+  }
+  else {
+    values.fill_style = FillSolid;
+    gc_mask |= GCFillStyle;
+  }
+  if (ISSET(text->flags, UNDERLINED) || ISSET(text->flags, OVERSTRIKED)) {
+    /*
+     * These 3 values should be fetched from the font.
+     * Currently I don't know how without diving into
+     * Tk internals.
+     */
+    underline_thickness = 2;
+    underline_pos = fm.descent/2;
+    overstrike_pos = fm.ascent*3/10;
+    values.line_style = LineSolid;
+    values.line_width = underline_thickness;
+    gc_mask |= GCLineStyle | GCLineWidth;
+  }
+  XChangeGC(wi->dpy, wi->gc, gc_mask, &values);
+  for (i = 0, lines_ptr = lines; i < num_lines; i++, lines_ptr++) {
+    int	tmp_x, tmp_y;
+    
+    tmp_x = (int)(text->pos_dev.x + lines_ptr->text_origin.x);
+    tmp_y = (int)(text->pos_dev.y + lines_ptr->text_origin.y);
+    XDrawString(wi->dpy, wi->draw_buffer, wi->gc,
+		tmp_x, tmp_y, (char *) lines_ptr->start, lines_ptr->num_chars);
+    if (ISSET(text->flags, UNDERLINED)) {
+      int y_under = tmp_y + underline_pos;
+      
+      XDrawLine(wi->dpy, wi->draw_buffer, wi->gc,
+		tmp_x, y_under, tmp_x+lines_ptr->width, y_under);
+    }
+    if (ISSET(text->flags, OVERSTRIKED)) {
+      int y_over = tmp_y-overstrike_pos;
+      
+      XDrawLine(wi->dpy, wi->draw_buffer, wi->gc,
+		tmp_x, y_over, tmp_x+lines_ptr->width, y_over);
+    }
+  }
+
+  //printf("cursor line : %d, cursor offset : %d\n", cursor_line, cursor_offset);
+  /*
+   * Setup the gc for the cursor and draw it.
+   */
+  if ((cursor_line >= 0) && ISSET(text->flags, HAS_FOCUS)) {
+    int xs, ys;
+
+    values.fill_style = FillSolid;
+    values.line_width = 2;
+    XChangeGC(wi->dpy, wi->gc, GCFillStyle|GCLineWidth, &values);
+
+    xs = (int)(text->pos_dev.x + lines[cursor_line].text_origin.x + cursor_offset + 1);
+    ys = (int)(text->pos_dev.y + lines[cursor_line].text_origin.y - fm.ascent + 1);
+    XDrawLine(wi->dpy, wi->draw_buffer, wi->gc, xs, ys, xs, ys + font_height - 1);
+  }
+}
+
+
+/*
+ **********************************************************************************
+ *
+ * IsSensitive --
+ *
+ **********************************************************************************
+ */
+static RadarBool
+IsSensitive(Item	item,
+	    int		item_part)
+{
+  return (ISSET(item->flags, SENSITIVE_BIT) &&
+	  item->parent->class->IsSensitive(item->parent, RADAR_NO_PART));
+}
+
+
+/*
+ **********************************************************************************
+ *
+ * Pick --
+ *
+ **********************************************************************************
+ */
+static double
+Pick(Item	item,
+     RadarPoint	*p,
+     Item	start_item,
+     int	aperture,
+     Item	*a_item,
+     int	*part)
+{
+  TextItem	text = (TextItem) item;
+  double	dist, new_dist;
+  int		num_lines, i;
+  TextLineInfo	lines, lines_ptr;
+  Tk_FontMetrics fm;
+  int		font_height;
+  RadarBBox	line_bbox;
+  RadarPoint	o;
+  
+  lines = (TextLineInfo) RadarListArray(text->text_info);
+  num_lines = RadarListSize(text->text_info);
+  dist = 1.0e40;
+  Tk_GetFontMetrics(text->font, &fm);
+  font_height = fm.descent + fm.ascent;
+  if (text->spacing > 0) {
+    font_height += text->spacing;
+  }  
+   
+  for (i = 0, lines_ptr = lines; i < num_lines; i++, lines_ptr++) {
+    ResetBBox(&line_bbox);
+    o.x = text->pos_dev.x + lines_ptr->text_origin.x;
+    o.y = text->pos_dev.y + lines_ptr->text_origin.y - fm.ascent;
+    AddPointToBBox(&line_bbox, o.x, o.y);
+    AddPointToBBox(&line_bbox, o.x + lines_ptr->width, o.y + font_height);
+    new_dist = RectangleToPointDist(&line_bbox, p);
+    dist = MIN(dist, new_dist);
+    if (dist <= 0.0) {
+      dist = 0.0;
+      break;
+    }
+  }
+
+  return dist;
+}
+
+
+/*
+ **********************************************************************************
+ *
+ * PostScript --
+ *
+ **********************************************************************************
+ */
+static void
+PostScript(Item			item,
+	   PostScriptInfo	ps_info)
+{
+}
+
+
+/*
+ **********************************************************************************
+ *
+ * GetAnchor --
+ *
+ **********************************************************************************
+ */
+static void
+GetAnchor(Item		item,
+	  RadarAnchor	anchor,
+	  RadarPoint	*p)
+{
+  TextItem	text = (TextItem) item;
+  
+  if (strlen(text->text) != 0) {
+    Origin2Anchor(&text->pos_dev,
+		  item->item_bounding_box.corner.x-item->item_bounding_box.orig.x,
+		  item->item_bounding_box.corner.y-item->item_bounding_box.orig.y,
+		  anchor, p);
+  }
+  else {
+    p->x = p->y = 0.0;
+  }
+}
+
+
+/*
+ **********************************************************************************
+ *
+ * GetClipVertices --
+ *	Get the clipping shape.
+ *
+ **********************************************************************************
+ */
+static RadarBool
+GetClipVertices(Item		item,
+		RadarPoint	**points,
+		int		*num_points)
+{
+  RadarListAssertSize(item->wi->work_pts, 2);
+  *points = (RadarPoint *) RadarListArray(item->wi->work_pts);
+  *num_points = 2;
+  (*points)[0] = item->item_bounding_box.orig;
+  (*points)[1] = item->item_bounding_box.corner;
+
+  return True;
+}
+
+
+/*
+ **********************************************************************************
+ *
+ * Coords --
+ *	Return or edit the item origin. This doesn't take care of
+ *	the possible attachment. The change will be effective at the
+ *	end of the attachment.
+ *
+ **********************************************************************************
+ */
+static int
+Coords(Item		item,
+       int		index,
+       int		cmd,
+       RadarPoint	**pts,
+       int		*num_pts)
+{
+  TextItem	text = (TextItem) item;
+  
+  if ((cmd == COORDS_ADD) || (cmd == COORDS_ADD_LAST) || (cmd == COORDS_REMOVE)) {
+    Tcl_AppendResult(item->wi->interp,
+		     " texts can't add or remove vertices", NULL);
+    return RADAR_ERROR;
+  }
+  else if ((cmd == COORDS_REPLACE) || (cmd == COORDS_REPLACE_ALL)) {
+    if (*num_pts == 0) {
+      Tcl_AppendResult(item->wi->interp,
+		       " coords command need 1 point on texts", NULL);
+      return RADAR_ERROR;
+    }
+    text->pos = (*pts)[0];
+    ITEM.Invalidate(item, RADAR_COORDS_FLAG);
+  }
+  else if ((cmd == COORDS_READ) || (cmd == COORDS_READ_ALL)) {
+    *num_pts = 1;
+    *pts = &text->pos;
+  }
+  return RADAR_OK;
+}
+
+
+/*
+ **********************************************************************************
+ *
+ * Exported functions struct
+ *
+ **********************************************************************************
+ */
+static ItemClassStruct TEXT_ITEM_CLASS = {
+  sizeof(TextItemStruct),
+  False,
+  False,
+  True,
+  "text",
+  text_attrs,
+  Init,
+  Clone,
+  Destroy,
+  Configure,
+  Query,
+  NULL,
+  GetAnchor,
+  GetClipVertices,
+  Coords,
+  ComputeCoordinates,
+  ToArea,
+  Draw,
+  IsSensitive,
+  Pick,
+  PostScript
+};
+
+RadarItemClassId RadarText = (RadarItemClassId) &TEXT_ITEM_CLASS;