From 29e49c4129881e7e7a7ac7660b59c1d6ba185db7 Mon Sep 17 00:00:00 2001
From: lecoanet
Date: Mon, 13 Nov 2000 10:10:09 +0000
Subject: Ajout de la methode Render et d'un attribut -alpha valable en mode
 rendu local.

---
 generic/Text.c | 58 +++++++++++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 55 insertions(+), 3 deletions(-)

(limited to 'generic/Text.c')

diff --git a/generic/Text.c b/generic/Text.c
index 0db7618..489cd82 100644
--- a/generic/Text.c
+++ b/generic/Text.c
@@ -46,6 +46,7 @@
 #include "Types.h"
 #include "WidgetInfo.h"
 #include "tkZinc.h"
+#include "Image.h"
 
 
 static const char rcsid[] = "$Imagine: Text.c,v 1.13 1997/05/15 11:35:46 lecoanet Exp $";
@@ -82,6 +83,7 @@ typedef struct _TextItemStruct {
   ZnAnchor	anchor;
   ZnAnchor	connection_anchor;
   ZnColor	color;
+  int		alpha;
   char		*text;
   Pixmap	fill_pattern;
   ZnFont	font;
@@ -96,6 +98,7 @@ typedef struct _TextItemStruct {
   int		insert_index;
   ZnList	text_info;
   int		max_width;
+  FontBitmap	*fb;
 } TextItemStruct, *TextItem;
 
 
@@ -103,6 +106,8 @@ static ZnAttrConfig	text_attrs[] = {
   { ZN_CONFIG_JUSTIFY, "-alignment", NULL,
     Tk_Offset(TextItemStruct, alignment), 0,
     ZN_COORDS_FLAG|ZN_LAYOUT_FLAG, False },
+  { ZN_CONFIG_UINT, "-alpha", NULL,
+    Tk_Offset(TextItemStruct, alpha), 0, ZN_DRAW_FLAG, False },
   { ZN_CONFIG_ANCHOR, "-anchor", NULL,
     Tk_Offset(TextItemStruct, anchor), 0, ZN_COORDS_FLAG, False },
   { ZN_CONFIG_COLOR, "-color", NULL,
@@ -185,10 +190,12 @@ Init(Item		item,
   text->anchor = ZnAnchorNW;
   text->connection_anchor = ZnAnchorSW;
   text->color = ZnGetColorByValue(wi->win, wi->fore_color);
+  text->alpha = 255;
   text->alignment = ZnJustifyLeft;
   text->font = Tk_GetFont(wi->interp, wi->win, Tk_NameOfFont(wi->font));
   text->width = 0;
   text->spacing = 0;
+  text->fb = NULL;
   
   text->insert_index = 0;
   CLEAR(text->flags, UNDERLINED);
@@ -279,9 +286,12 @@ Configure(Item		item,
 	  Tcl_Obj *CONST argv[],
 	  int		*flags)
 {
-  Item	old_connected;
-
+  Item		old_connected;
+  ZnFont	old_font;
+  TextItem	text = (TextItem) item;
+  
   old_connected = item->connected_item;
+  old_font = text->font;
   if (ITEM_P.ConfigureAttributes((char *) item, -1, argc, argv, flags) == ZN_ERROR) {
     return ZN_ERROR;
   }  
@@ -299,7 +309,10 @@ Configure(Item		item,
       item->connected_item = old_connected;
     }
   }  
-
+  if (old_font != text->font) {
+    text->fb = NULL;
+  }
+  
   return ZN_OK;
 }
 
@@ -735,6 +748,44 @@ Draw(Item	item)
     }
   }
 }
+  
+
+/*
+**********************************************************************************
+ *
+ * Render --
+ *
+ **********************************************************************************
+ */
+static void
+Render(Item	item)
+{
+  WidgetInfo	*wi = item->wi;
+  TextItem	text = (TextItem) item;
+  TextLineInfo	lines, lines_ptr;
+  int		i, num_lines;
+  int		tmp_x, tmp_y;
+  int		color;
+
+  color = (((text->color->red & 0xff00) << 16) |
+	   ((text->color->green & 0xff00) << 8) |
+	   (text->color->blue & 0xff00) |
+	   (text->alpha & 0xff));
+  lines = (TextLineInfo) ZnListArray(text->text_info);
+  num_lines = ZnListSize(text->text_info);  
+  if (!text->fb) {
+    text->fb = GetFontBitmap(wi->win, text->font);
+  }
+
+  for (i = 0, lines_ptr = lines; i < num_lines; i++, lines_ptr++) {
+    tmp_x = (int)(text->pos_dev.x + lines_ptr->text_origin.x);
+    tmp_y = (int)(text->pos_dev.y + lines_ptr->text_origin.y) - text->fb->ascent;
+    rgb_text(wi->buf.buf, wi->buf.ox, wi->buf.oy,
+	     wi->buf.cx, wi->buf.cy, wi->buf.rowstride,
+	     lines_ptr->start, lines_ptr->num_chars,
+	     tmp_x, tmp_y, text->fb, color);
+  }
+}
 
 
 /*
@@ -1273,6 +1324,7 @@ static ItemClassStruct TEXT_ITEM_CLASS = {
   ComputeCoordinates,
   ToArea,
   Draw,
+  Render,
   IsSensitive,
   Pick,
   NULL,			/* PickVertex */
-- 
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