Blocked the tab key from getting inserted into the buffer since the

	* widgets/e-text-event-processor-emacs-like.c: Blocked the tab key
	from getting inserted into the buffer since the renderer doesn't
	know what a tab is.

	* widgets/e-text.c, widgets/e-text.h: Fixed a memory leak.  Added
	a blinking cursor and scrolling for the text item.

svn path=/trunk/; revision=1554

3 files changed, 127 insertions, 6 deletions

diff --git a/widgets/text/e-text-event-processor-emacs-like.c b/widgets/text/e-text-event-processor-emacs-like.c
index 1d7d36d45f..6c7c86afdc 100644
--- a/widgets/text/e-text-event-processor-emacs-like.c
+++ b/widgets/text/e-text-event-processor-emacs-like.c
@@ -241,10 +241,9 @@ e_text_event_processor_emacs_like_event (ETextEventProcessor *tep, ETextEventPro
 				}
 				break;
 			case GDK_Tab:
-				command.action = E_TEP_INSERT;
+				/* Don't insert literally */
+				command.action = E_TEP_NOP;
 				command.position = E_TEP_SELECTION;
-				command.value = 1;
-				command.string = "\t";
 				break;
 			case GDK_Return:
 				if (key.state & GDK_CONTROL_MASK) {
@@ -258,9 +257,9 @@ e_text_event_processor_emacs_like_event (ETextEventProcessor *tep, ETextEventPro
 				}
 				break;
 			case GDK_Escape:
+				/* Don't insert literally */
 				command.action = E_TEP_NOP;
 				command.position = E_TEP_SELECTION;
-				/* Don't insert literally */
 				break;
 	  
 			default:
diff --git a/widgets/text/e-text.c b/widgets/text/e-text.c
index f6daa3f3cf..e4e8e11f9b 100644
--- a/widgets/text/e-text.c
+++ b/widgets/text/e-text.c
@@ -223,6 +223,19 @@ e_text_init (EText *text)
 	text->selection_start = 0;
 	text->selection_end = 0;
 	text->select_by_word = FALSE;
+
+	text->timeout_id = 0;
+	text->timer = NULL;
+
+	text->lastx = 0;
+	text->lasty = 0;
+	text->last_state = 0;
+
+	text->scroll_start = 0;
+	text->show_cursor = TRUE;
+	text->button_down = FALSE;
+	
+	text->tep = NULL;
 }
 
 /* Destroy handler for the text item */
@@ -239,6 +252,9 @@ e_text_destroy (GtkObject *object)
 	if (text->text)
 		g_free (text->text);
 
+	if (text->tep)
+		gtk_object_unref (GTK_OBJECT(text->tep));
+
 	if (text->lines)
 		g_free (text->lines);
 
@@ -1049,11 +1065,12 @@ _get_tep(EText *text)
 {
 	if (!text->tep) {
 		text->tep = e_text_event_processor_emacs_like_new();
+		gtk_object_ref (GTK_OBJECT (text->tep));
+		gtk_object_sink (GTK_OBJECT (text->tep));
 		gtk_signal_connect(GTK_OBJECT(text->tep),
 				   "command",
 				   GTK_SIGNAL_FUNC(e_text_command),
 				   (gpointer) text);
-				    
 	}
 }
 
@@ -1165,7 +1182,8 @@ e_text_draw (GnomeCanvasItem *item, GdkDrawable *drawable,
 				}
 				if (text->selection_start == text->selection_end &&
 				    text->selection_start >= start_char &&
-				    text->selection_start <= end_char) {
+				    text->selection_start <= end_char &&
+				    text->show_cursor) {
 					gdk_draw_rectangle (drawable,
 							    text->gc,
 							    TRUE,
@@ -1460,6 +1478,7 @@ _get_position_from_xy (EText *text, gint x, gint y)
 	i = 0;
 	lines = text->lines;
 	lines += j;
+	x += text->xofs_edit;
 	xpos = get_line_xpos (text, lines);
 	for(i = 0; i < lines->length; i++) {
 		int charwidth = gdk_text_width(text->font,
@@ -1473,6 +1492,69 @@ _get_position_from_xy (EText *text, gint x, gint y)
 	return lines->text + i - text->text;
 }
 
+#define SCROLL_WAIT_TIME 30000
+
+static gboolean
+_blink_scroll_timeout (gpointer data)
+{
+	EText *text = E_TEXT(data);
+	gulong current_time;
+	gboolean scroll = FALSE;
+	gboolean redraw = FALSE;
+	
+	g_timer_elapsed(text->timer, &current_time);
+
+	if (text->scroll_start + SCROLL_WAIT_TIME > 1000000) {
+		if (current_time > text->scroll_start - (1000000 - SCROLL_WAIT_TIME) &&
+		    current_time < text->scroll_start)
+			scroll = TRUE;
+	} else {
+		if (current_time > text->scroll_start + SCROLL_WAIT_TIME ||
+		    current_time < text->scroll_start)
+			scroll = TRUE;
+	}
+	if (scroll && text->button_down) {
+		if (text->lastx - text->clip_cx > text->clip_cwidth &&
+		    text->xofs_edit < text->max_width - text->clip_cwidth) {
+			text->xofs_edit += 4;
+			if (text->xofs_edit > text->max_width - text->clip_cwidth)
+				text->xofs_edit = text->max_width - text->clip_cwidth;
+			redraw = TRUE;
+		}
+		if (text->lastx - text->clip_cx < 0 &&
+		    text->xofs_edit > 0) {
+			text->xofs_edit -= 4;
+			if (text->xofs_edit < 0)
+				text->xofs_edit = 0;
+			redraw = TRUE;
+		}
+		if (redraw) {
+			ETextEventProcessorEvent e_tep_event;
+			e_tep_event.type = GDK_MOTION_NOTIFY;
+			e_tep_event.motion.state = text->last_state;
+			e_tep_event.motion.time = 0;
+			e_tep_event.motion.position = _get_position_from_xy(text, text->lastx, text->lasty);
+			_get_tep(text);
+			e_text_event_processor_handle_event (text->tep,
+							     &e_tep_event);
+			text->scroll_start = current_time;
+		}
+	}
+
+	if (!((current_time / 500000) % 2)) {
+		if (!text->show_cursor)
+			redraw = TRUE;
+		text->show_cursor = TRUE;
+	} else {
+		if (text->show_cursor)
+			redraw = TRUE;
+		text->show_cursor = FALSE;
+	}
+	if (redraw)
+		gnome_canvas_item_request_update (GNOME_CANVAS_ITEM(text));
+	return TRUE;
+}
+
 static gint
 e_text_event (GnomeCanvasItem *item, GdkEvent *event)
 {
@@ -1494,9 +1576,23 @@ e_text_event (GnomeCanvasItem *item, GdkEvent *event)
 					text->selection_end = 0;
 					text->select_by_word = FALSE;
 					text->xofs_edit = 0;
+					if (text->timeout_id == 0)
+						text->timeout_id = g_timeout_add(10, _blink_scroll_timeout, text);
+					text->timer = g_timer_new();
+					g_timer_elapsed(text->timer, &(text->scroll_start));
+					g_timer_start(text->timer);
 				}
 			} else {
 				text->editing = FALSE;
+				if (text->timeout_id) {
+					g_source_remove(text->timeout_id);
+					text->timeout_id = 0;
+				}
+				if (text->timer) {
+					g_timer_stop(text->timer);
+					g_timer_destroy(text->timer);
+					text->timer = NULL;
+				}
 			}
 			calc_line_widths (text);
 		}
@@ -1529,6 +1625,18 @@ e_text_event (GnomeCanvasItem *item, GdkEvent *event)
 			_get_tep(text);
 			return_val = e_text_event_processor_handle_event (text->tep,
 								       &e_tep_event);
+			if (event->button.button == 1) {
+				if (event->type == GDK_BUTTON_PRESS)
+					text->button_down = TRUE;
+				else
+					text->button_down = FALSE;
+			}
+			text->lastx = button.x;
+			text->lasty = button.y;
+			text->last_state = button.state;
+			if (event->type == GDK_BUTTON_PRESS && text->timer) {
+				g_timer_reset(text->timer);
+			}
 		} else if (text->editable && event->type == GDK_BUTTON_RELEASE) {
 			gnome_canvas_item_grab_focus (item);
 			return 1;
@@ -1543,6 +1651,9 @@ e_text_event (GnomeCanvasItem *item, GdkEvent *event)
 			_get_tep(text);
 			return_val = e_text_event_processor_handle_event (text->tep,
 								       &e_tep_event);
+			text->lastx = motion.x;
+			text->lasty = motion.y;
+			text->last_state = motion.state;
 		}
 		break;
 	default:
diff --git a/widgets/text/e-text.h b/widgets/text/e-text.h
index b18b93d7f2..23713563c3 100644
--- a/widgets/text/e-text.h
+++ b/widgets/text/e-text.h
@@ -148,6 +148,17 @@ struct _EText {
 	int selection_end;              /* End of selection */
 	gboolean select_by_word;        /* Current selection is by word */
 
+	/* This section is for drag scrolling. */
+	gint timeout_id;                /* Current timeout id for scrolling */
+	GTimer *timer;                  /* Timer for blinking cursor and scrolling */
+
+	gint lastx, lasty;              /* Last x and y motion events */
+	gint last_state;                /* Last state */
+	gulong scroll_start;            /* Starting time for scroll (microseconds) */
+
+	gint show_cursor;               /* Is cursor currently shown */
+	gboolean button_down;           /* Is mouse button 1 down */
+
 	ETextEventProcessor *tep;       /* Text Event Processor */
 };