1 files changed, 329 insertions, 0 deletions

diff --git a/gtk/gtklabel.c b/gtk/gtklabel.c
new file mode 100644
index 000000000..5cd1f804f
--- /dev/null
+++ b/gtk/gtklabel.c
@@ -0,0 +1,329 @@
+/* GTK - The GIMP Toolkit
+ * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
+ *
+ * This library 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 library 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 library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <string.h>
+#include "gtklabel.h"
+
+
+static void gtk_label_class_init   (GtkLabelClass  *klass);
+static void gtk_label_init         (GtkLabel       *label);
+static void gtk_label_destroy      (GtkObject      *object);
+static void gtk_label_size_request (GtkWidget      *widget,
+				    GtkRequisition *requisition);
+static gint gtk_label_expose       (GtkWidget      *widget,
+				    GdkEventExpose *event);
+
+
+static GtkMiscClass *parent_class = NULL;
+
+
+guint
+gtk_label_get_type ()
+{
+  static guint label_type = 0;
+
+  if (!label_type)
+    {
+      GtkTypeInfo label_info =
+      {
+	"GtkLabel",
+	sizeof (GtkLabel),
+	sizeof (GtkLabelClass),
+	(GtkClassInitFunc) gtk_label_class_init,
+	(GtkObjectInitFunc) gtk_label_init,
+	(GtkArgFunc) NULL,
+      };
+
+      label_type = gtk_type_unique (gtk_misc_get_type (), &label_info);
+    }
+
+  return label_type;
+}
+
+void
+gtk_label_class_init (GtkLabelClass *class)
+{
+  GtkObjectClass *object_class;
+  GtkWidgetClass *widget_class;
+
+  object_class = (GtkObjectClass*) class;
+  widget_class = (GtkWidgetClass*) class;
+
+  parent_class = gtk_type_class (gtk_misc_get_type ());
+
+  object_class->destroy = gtk_label_destroy;
+
+  widget_class->size_request = gtk_label_size_request;
+  widget_class->expose_event = gtk_label_expose;
+}
+
+void
+gtk_label_init (GtkLabel *label)
+{
+  GTK_WIDGET_SET_FLAGS (label, GTK_NO_WINDOW);
+
+  label->label = NULL;
+  label->row = NULL;
+  label->jtype = GTK_JUSTIFY_CENTER;
+}
+
+GtkWidget*
+gtk_label_new (const char *str)
+{
+  GtkLabel *label;
+
+  g_return_val_if_fail (str != NULL, NULL);
+
+  label = gtk_type_new (gtk_label_get_type ());
+
+  gtk_label_set (label, str);
+
+  return GTK_WIDGET (label);
+}
+
+void
+gtk_label_set (GtkLabel *label,
+	       const char *str)
+{
+  char* p;
+
+  g_return_if_fail (label != NULL);
+  g_return_if_fail (GTK_IS_LABEL (label));
+  g_return_if_fail (str != NULL);
+
+  if (label->label)
+    g_free (label->label);
+  label->label = g_strdup (str);
+
+  if (label->row)
+    g_slist_free (label->row);
+  label->row = NULL;
+  label->row = g_slist_append (label->row, label->label);
+  p = label->label;
+  while ((p = strchr(p, '\n')))
+    label->row = g_slist_append (label->row, ++p);
+
+  if (GTK_WIDGET_VISIBLE (label))
+    {
+      if (GTK_WIDGET_MAPPED (label))
+	gdk_window_clear_area (GTK_WIDGET (label)->window,
+			       GTK_WIDGET (label)->allocation.x,
+			       GTK_WIDGET (label)->allocation.y,
+			       GTK_WIDGET (label)->allocation.width,
+			       GTK_WIDGET (label)->allocation.height);
+
+      gtk_widget_queue_resize (GTK_WIDGET (label));
+    }
+}
+
+void
+gtk_label_set_justify (GtkLabel *label, GtkJustification jtype)
+{
+  g_return_if_fail (label != NULL);
+  g_return_if_fail (GTK_IS_LABEL (label));
+
+  if ((GtkJustification) label->jtype != jtype)
+    {
+      label->jtype = jtype;
+      
+      if (GTK_WIDGET_VISIBLE (label))
+        {
+          if (GTK_WIDGET_MAPPED (label))
+            gdk_window_clear_area (GTK_WIDGET (label)->window,
+                                   GTK_WIDGET (label)->allocation.x,
+                                   GTK_WIDGET (label)->allocation.y,
+                                   GTK_WIDGET (label)->allocation.width,
+                                   GTK_WIDGET (label)->allocation.height);
+          
+          gtk_widget_queue_resize (GTK_WIDGET (label));
+        }
+    }
+}
+
+void
+gtk_label_get (GtkLabel  *label,
+	       char     **str)
+{
+  g_return_if_fail (label != NULL);
+  g_return_if_fail (GTK_IS_LABEL (label));
+  g_return_if_fail (str != NULL);
+
+  *str = label->label;
+}
+
+
+static void
+gtk_label_destroy (GtkObject *object)
+{
+  GtkLabel *label;
+
+  g_return_if_fail (object != NULL);
+  g_return_if_fail (GTK_IS_LABEL (object));
+
+  label = GTK_LABEL (object);
+
+  if (GTK_WIDGET (object)->parent &&
+      GTK_WIDGET_MAPPED (object))
+    gtk_widget_unmap (GTK_WIDGET (object));
+
+  g_free (label->label);
+  g_slist_free (label->row);
+
+  if (GTK_OBJECT_CLASS (parent_class)->destroy)
+    (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
+}
+
+static void
+gtk_label_size_request (GtkWidget      *widget,
+			GtkRequisition *requisition)
+{
+  GtkLabel *label;
+  GSList *row;
+  gint width;
+
+  g_return_if_fail (widget != NULL);
+  g_return_if_fail (GTK_IS_LABEL (widget));
+  g_return_if_fail (requisition != NULL);
+
+  label = GTK_LABEL (widget);
+
+  row = label->row;
+  width = 0;
+  while (row)
+    {
+      if (row->next)
+  	  width = MAX (width,
+                       gdk_text_width (GTK_WIDGET (label)->style->font, row->data,
+                                       (gchar*) row->next->data - (gchar*) row->data));
+      else
+        width = MAX (width, gdk_string_width (GTK_WIDGET (label)->style->font, row->data));
+      row = row->next;
+    }
+  
+  requisition->width = width + label->misc.xpad * 2;
+  requisition->height = ((GTK_WIDGET (label)->style->font->ascent +
+                          GTK_WIDGET (label)->style->font->descent + 2) *
+                         g_slist_length(label->row) +
+                         label->misc.ypad * 2);
+}
+
+static gint
+gtk_label_expose (GtkWidget      *widget,
+		  GdkEventExpose *event)
+{
+  GtkLabel *label;
+  GtkMisc *misc;
+  GSList *row;
+  gint state;
+  gint offset;
+  gint len;
+  gint maxl;
+  gint x, y;
+
+  g_return_val_if_fail (widget != NULL, FALSE);
+  g_return_val_if_fail (GTK_IS_LABEL (widget), FALSE);
+  g_return_val_if_fail (event != NULL, FALSE);
+
+  if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_MAPPED (widget))
+    {
+      label = GTK_LABEL (widget);
+      misc = GTK_MISC (widget);
+
+      state = widget->state;
+      if (!GTK_WIDGET_IS_SENSITIVE (widget))
+	state = GTK_STATE_INSENSITIVE;
+
+      /* We only draw the label if we have been allocated at least as
+       *  much space as we requested. If we have less space than we
+       *  need to draw the string then we _should_ have asked our
+       *  parent container to resize and a new allocation _should_
+       *  be forthcoming so there is no reason to redraw (incorrectly)
+       *  here.
+       */
+      if ((widget->allocation.width >= widget->requisition.width) &&
+	  (widget->allocation.height >= widget->requisition.height))
+	{
+	  maxl = widget->requisition.width - misc->xpad * 2;
+	  x = widget->allocation.x + misc->xpad +
+	       (widget->allocation.width - widget->requisition.width) * misc->xalign + 0.5;
+	  y = (widget->allocation.y * (1.0 - misc->yalign) +
+	       (widget->allocation.y + widget->allocation.height - (widget->requisition.height -
+								    misc->ypad * 2)) *
+	       misc->yalign + widget->style->font->ascent) + 1.5;
+          
+	  row = label->row;
+	  while (row && row->next)
+            {
+              len = (gchar*) row->next->data - (gchar*) row->data;
+              offset = 0;
+              if (label->jtype == GTK_JUSTIFY_CENTER)
+	    	offset = (maxl - gdk_text_width (widget->style->font, row->data, len)) / 2;
+              else if (label->jtype == GTK_JUSTIFY_RIGHT)
+	    	offset = (maxl - gdk_text_width (widget->style->font, row->data, len));
+              if (state == GTK_STATE_INSENSITIVE)
+                gdk_draw_text (widget->window, widget->style->font,
+                               widget->style->white_gc,
+                               offset + x + 1, y + 1, row->data, len);
+              
+              gdk_draw_text (widget->window, widget->style->font,
+                             widget->style->fg_gc[state],
+                             offset + x, y, row->data, len);
+              row = row->next;
+              y += widget->style->font->ascent + widget->style->font->descent + 2;
+            }
+          
+	 /* COMMENT: we can avoid gdk_text_width() calls here storing in label->row
+	    the widths of the rows calculated in gtk_label_set.
+	    Once we have a wrapping interface we can support GTK_JUSTIFY_FILL.
+	  */
+	 offset = 0;
+	 if (label->jtype == GTK_JUSTIFY_CENTER)
+           offset = (maxl - gdk_string_width (widget->style->font, row->data)) / 2;
+	 else if (label->jtype == GTK_JUSTIFY_RIGHT)
+           offset = (maxl - gdk_string_width (widget->style->font, row->data));
+	 if (state == GTK_STATE_INSENSITIVE)
+	   gdk_draw_string (widget->window, widget->style->font,
+                            widget->style->white_gc,
+                            offset + x + 1, y + 1, row->data);
+         
+	 gdk_draw_string (widget->window, widget->style->font,
+                          widget->style->fg_gc[state],
+                          offset + x, y, row->data);
+
+         /*
+         gdk_draw_rectangle (widget->window,
+                             widget->style->bg_gc[GTK_STATE_SELECTED], FALSE,
+                             widget->allocation.x, widget->allocation.y,
+                             widget->allocation.width - 1, widget->allocation.height - 1);
+                             */
+	}
+      else
+	{
+	  /*
+	  g_print ("gtk_label_expose: allocation too small: %d %d ( %d %d )\n",
+		   widget->allocation.width, widget->allocation.height,
+		   widget->requisition.width, widget->requisition.height);
+		   */
+	}
+    }
+
+  return TRUE;
+}
+
+
+
+