Show the text of the item, in a tooltip style. (e_text_event): Add a

2000-02-20  Iain Holmes  <ih@csd.abdn.ac.uk>

	* widgets/e-text/e-text.[ch] (_do_tooltip): Show the text of the item,
	in a tooltip style.
	(e_text_event): Add a timeout on the Enter and remove it on the Leave
	events.

	* e-text-test.c: New file to test e-text items.

svn path=/trunk/; revision=1866

6 files changed, 314 insertions, 2 deletions

diff --git a/widgets/e-text/e-text-test.c b/widgets/e-text/e-text-test.c
new file mode 100644
index 0000000000..ae43d41611
--- /dev/null
+++ b/widgets/e-text/e-text-test.c
@@ -0,0 +1,104 @@
+/*
+  ETextTest: E-Text item test program
+  Copyright (C)2000: Iain Holmes  <ih@csd.abdn.ac.uk>
+
+  This code is licensed under the GPL
+*/
+
+#include "e-text.h"
+#include <gnome.h>
+
+void
+quit_cb (GtkWidget *widget,
+	 gpointer data)
+{
+  gtk_main_quit ();
+}
+
+void
+change_text_cb (GtkEntry *entry,
+		EText *text)
+{
+  gchar *str;
+
+  str = gtk_entry_get_text (entry);
+  gnome_canvas_item_set (GNOME_CANVAS_ITEM (text),
+			 "text", str,
+			 NULL);
+}
+
+void
+change_font_cb (GtkEntry *entry,
+		EText *text)
+{
+  gchar *font;
+
+  font = gtk_entry_get_text (entry);
+  gnome_canvas_item_set (GNOME_CANVAS_ITEM (text),
+			 "font", font,
+			 NULL);
+}
+
+int
+main (int argc,
+      char **argv)
+{
+  GtkWidget *window, *canvas, *scroller, *vbox, *text, *font;
+  GtkWidget *frame;
+  GnomeCanvasItem *item;
+
+  gnome_init ("ETextTest", "0.0.1", argc, argv);
+  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+  gtk_window_set_title (GTK_WINDOW (window), "EText Test");
+  gtk_signal_connect (GTK_OBJECT (window), "destroy",
+		      GTK_SIGNAL_FUNC (quit_cb), NULL);
+
+  gtk_widget_push_visual (gdk_rgb_get_visual ());
+  gtk_widget_push_colormap (gdk_rgb_get_cmap ());
+  canvas = gnome_canvas_new ();
+  gtk_widget_pop_visual ();
+  gtk_widget_pop_colormap ();
+  scroller = gtk_scrolled_window_new (NULL, NULL);
+  vbox = gtk_vbox_new (FALSE, 2);
+
+  gtk_container_add (GTK_CONTAINER (window), vbox);
+  gtk_box_pack_start (GTK_BOX (vbox), scroller, TRUE, TRUE, 2);
+  gtk_container_add (GTK_CONTAINER (scroller), canvas);
+
+  frame = gtk_frame_new ("Text");
+  text = gtk_entry_new ();
+  gtk_container_add (GTK_CONTAINER (frame), text);
+  gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
+  
+  frame = gtk_frame_new ("Font");
+  font = gtk_entry_new ();
+  gtk_container_add (GTK_CONTAINER (frame), font);
+  gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
+
+  item = gnome_canvas_item_new (gnome_canvas_root (GNOME_CANVAS (canvas)),
+				e_text_get_type (),
+				"text", "Hello World! This is a really long string to test out the ellipsis stuff.",
+				"x", 10.0,
+				"y", 10.0,
+				"font", "-adobe-helvetica-medium-r-normal--12-*-72-72-p-*-iso8859-1",
+				"fill_color", "black",
+				"anchor", GTK_ANCHOR_NW,
+				"use_ellipsis", TRUE,
+				"ellipsis", "...",
+				"editable", TRUE,
+				"line_wrap", TRUE,
+				"max_lines", 3,
+				"clip_width", 150.0,
+				NULL);
+
+  gtk_signal_connect (GTK_OBJECT (text), "activate",
+		      GTK_SIGNAL_FUNC (change_text_cb), item);
+  gtk_signal_connect (GTK_OBJECT (font), "activate",
+		      GTK_SIGNAL_FUNC (change_font_cb), item);
+
+  gnome_canvas_set_scroll_region (GNOME_CANVAS (canvas), 0.0, 0.0, 400.0, 400.0);
+  gtk_widget_show_all (window);
+  gtk_main ();
+
+  return 0;
+}
diff --git a/widgets/e-text/e-text.c b/widgets/e-text/e-text.c
index 8dde3bbaed..2e3e7c158a 100644
--- a/widgets/e-text/e-text.c
+++ b/widgets/e-text/e-text.c
@@ -332,7 +332,7 @@ e_text_destroy (GtkObject *object)
 	EText *text;
 
 	g_return_if_fail (object != NULL);
-	g_return_if_fail (GNOME_IS_CANVAS_TEXT (object));
+	g_return_if_fail (E_IS_TEXT (object));
 
 	text = E_TEXT (object);
 
@@ -1823,6 +1823,48 @@ _blink_scroll_timeout (gpointer data)
 	return TRUE;
 }
 
+static gboolean
+_do_tooltip (gpointer data)
+{
+	EText *text = E_TEXT (data);
+	struct line *lines;
+	GtkWidget *label, *vbox;
+	gint x, y, pointer_x, pointer_y, scr_w, scr_h, tip_w, tip_h;
+	int i;
+
+	lines = text->lines;
+
+	scr_w = gdk_screen_width ();
+	scr_h = gdk_screen_height ();
+	gdk_window_get_pointer (NULL, &pointer_x, &pointer_y, NULL);
+
+	text->tooltip_window = gtk_window_new (GTK_WINDOW_POPUP);
+	vbox = gtk_vbox_new (TRUE, 0);
+	for (i = 0; i < text->num_lines; i++) {
+		gchar *linetext;
+
+		linetext = g_strndup (lines->text, lines->length);
+		label = gtk_label_new (linetext);
+		g_free (linetext);
+		gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
+		gtk_box_pack_start (GTK_BOX (vbox), label, TRUE, TRUE, 0);
+		lines++;
+	}
+
+	gtk_widget_show_all (vbox);
+	gtk_container_add (GTK_CONTAINER (text->tooltip_window), vbox);
+	gtk_widget_realize (text->tooltip_window);
+	tip_w = text->tooltip_window->allocation.width;
+	tip_h = text->tooltip_window->allocation.height;
+
+	/* Stay on screen */
+	x = pointer_x + tip_w <= scr_w ? pointer_x : scr_w - tip_w; 
+	y = pointer_y + tip_h + 1 <= scr_h ? pointer_y + 1: pointer_y - tip_h;
+	gtk_widget_popup (text->tooltip_window, x, y);
+
+	return FALSE;
+}
+
 static gint
 e_text_event (GnomeCanvasItem *item, GdkEvent *event)
 {
@@ -1951,6 +1993,7 @@ e_text_event (GnomeCanvasItem *item, GdkEvent *event)
 		}
 		break;
 	case GDK_ENTER_NOTIFY:
+		text->tooltip_timeout = gtk_timeout_add (3000, _do_tooltip, text);
 		text->pointer_in = TRUE;
 		if (text->editing) {
 			if ( text->default_cursor_shown ) {
@@ -1960,6 +2003,12 @@ e_text_event (GnomeCanvasItem *item, GdkEvent *event)
 		}
 		break;
 	case GDK_LEAVE_NOTIFY:
+		gtk_timeout_remove (text->tooltip_timeout);
+		if (text->tooltip_window) {
+			gtk_widget_destroy (text->tooltip_window);
+			text->tooltip_window = NULL;
+		}
+
 		text->pointer_in = FALSE;
 		if (text->editing) {
 			if ( ! text->default_cursor_shown ) {
diff --git a/widgets/e-text/e-text.h b/widgets/e-text/e-text.h
index 1254e0fd1c..c44589d3ae 100644
--- a/widgets/e-text/e-text.h
+++ b/widgets/e-text/e-text.h
@@ -173,6 +173,9 @@ struct _EText {
 
 	GdkCursor *default_cursor;      /* Default cursor (arrow) */
 	GdkCursor *i_cursor;            /* I beam cursor */
+
+	gint tooltip_timeout;           /* Timeout for the tooltip */
+	GtkWidget *tooltip_window;      /* GtkWindow for displaying the tooltip */
 };
 
 struct _ETextClass {
diff --git a/widgets/text/e-text-test.c b/widgets/text/e-text-test.c
new file mode 100644
index 0000000000..ae43d41611
--- /dev/null
+++ b/widgets/text/e-text-test.c
@@ -0,0 +1,104 @@
+/*
+  ETextTest: E-Text item test program
+  Copyright (C)2000: Iain Holmes  <ih@csd.abdn.ac.uk>
+
+  This code is licensed under the GPL
+*/
+
+#include "e-text.h"
+#include <gnome.h>
+
+void
+quit_cb (GtkWidget *widget,
+	 gpointer data)
+{
+  gtk_main_quit ();
+}
+
+void
+change_text_cb (GtkEntry *entry,
+		EText *text)
+{
+  gchar *str;
+
+  str = gtk_entry_get_text (entry);
+  gnome_canvas_item_set (GNOME_CANVAS_ITEM (text),
+			 "text", str,
+			 NULL);
+}
+
+void
+change_font_cb (GtkEntry *entry,
+		EText *text)
+{
+  gchar *font;
+
+  font = gtk_entry_get_text (entry);
+  gnome_canvas_item_set (GNOME_CANVAS_ITEM (text),
+			 "font", font,
+			 NULL);
+}
+
+int
+main (int argc,
+      char **argv)
+{
+  GtkWidget *window, *canvas, *scroller, *vbox, *text, *font;
+  GtkWidget *frame;
+  GnomeCanvasItem *item;
+
+  gnome_init ("ETextTest", "0.0.1", argc, argv);
+  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+  gtk_window_set_title (GTK_WINDOW (window), "EText Test");
+  gtk_signal_connect (GTK_OBJECT (window), "destroy",
+		      GTK_SIGNAL_FUNC (quit_cb), NULL);
+
+  gtk_widget_push_visual (gdk_rgb_get_visual ());
+  gtk_widget_push_colormap (gdk_rgb_get_cmap ());
+  canvas = gnome_canvas_new ();
+  gtk_widget_pop_visual ();
+  gtk_widget_pop_colormap ();
+  scroller = gtk_scrolled_window_new (NULL, NULL);
+  vbox = gtk_vbox_new (FALSE, 2);
+
+  gtk_container_add (GTK_CONTAINER (window), vbox);
+  gtk_box_pack_start (GTK_BOX (vbox), scroller, TRUE, TRUE, 2);
+  gtk_container_add (GTK_CONTAINER (scroller), canvas);
+
+  frame = gtk_frame_new ("Text");
+  text = gtk_entry_new ();
+  gtk_container_add (GTK_CONTAINER (frame), text);
+  gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
+  
+  frame = gtk_frame_new ("Font");
+  font = gtk_entry_new ();
+  gtk_container_add (GTK_CONTAINER (frame), font);
+  gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
+
+  item = gnome_canvas_item_new (gnome_canvas_root (GNOME_CANVAS (canvas)),
+				e_text_get_type (),
+				"text", "Hello World! This is a really long string to test out the ellipsis stuff.",
+				"x", 10.0,
+				"y", 10.0,
+				"font", "-adobe-helvetica-medium-r-normal--12-*-72-72-p-*-iso8859-1",
+				"fill_color", "black",
+				"anchor", GTK_ANCHOR_NW,
+				"use_ellipsis", TRUE,
+				"ellipsis", "...",
+				"editable", TRUE,
+				"line_wrap", TRUE,
+				"max_lines", 3,
+				"clip_width", 150.0,
+				NULL);
+
+  gtk_signal_connect (GTK_OBJECT (text), "activate",
+		      GTK_SIGNAL_FUNC (change_text_cb), item);
+  gtk_signal_connect (GTK_OBJECT (font), "activate",
+		      GTK_SIGNAL_FUNC (change_font_cb), item);
+
+  gnome_canvas_set_scroll_region (GNOME_CANVAS (canvas), 0.0, 0.0, 400.0, 400.0);
+  gtk_widget_show_all (window);
+  gtk_main ();
+
+  return 0;
+}
diff --git a/widgets/text/e-text.c b/widgets/text/e-text.c
index 8dde3bbaed..2e3e7c158a 100644
--- a/widgets/text/e-text.c
+++ b/widgets/text/e-text.c
@@ -332,7 +332,7 @@ e_text_destroy (GtkObject *object)
 	EText *text;
 
 	g_return_if_fail (object != NULL);
-	g_return_if_fail (GNOME_IS_CANVAS_TEXT (object));
+	g_return_if_fail (E_IS_TEXT (object));
 
 	text = E_TEXT (object);
 
@@ -1823,6 +1823,48 @@ _blink_scroll_timeout (gpointer data)
 	return TRUE;
 }
 
+static gboolean
+_do_tooltip (gpointer data)
+{
+	EText *text = E_TEXT (data);
+	struct line *lines;
+	GtkWidget *label, *vbox;
+	gint x, y, pointer_x, pointer_y, scr_w, scr_h, tip_w, tip_h;
+	int i;
+
+	lines = text->lines;
+
+	scr_w = gdk_screen_width ();
+	scr_h = gdk_screen_height ();
+	gdk_window_get_pointer (NULL, &pointer_x, &pointer_y, NULL);
+
+	text->tooltip_window = gtk_window_new (GTK_WINDOW_POPUP);
+	vbox = gtk_vbox_new (TRUE, 0);
+	for (i = 0; i < text->num_lines; i++) {
+		gchar *linetext;
+
+		linetext = g_strndup (lines->text, lines->length);
+		label = gtk_label_new (linetext);
+		g_free (linetext);
+		gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
+		gtk_box_pack_start (GTK_BOX (vbox), label, TRUE, TRUE, 0);
+		lines++;
+	}
+
+	gtk_widget_show_all (vbox);
+	gtk_container_add (GTK_CONTAINER (text->tooltip_window), vbox);
+	gtk_widget_realize (text->tooltip_window);
+	tip_w = text->tooltip_window->allocation.width;
+	tip_h = text->tooltip_window->allocation.height;
+
+	/* Stay on screen */
+	x = pointer_x + tip_w <= scr_w ? pointer_x : scr_w - tip_w; 
+	y = pointer_y + tip_h + 1 <= scr_h ? pointer_y + 1: pointer_y - tip_h;
+	gtk_widget_popup (text->tooltip_window, x, y);
+
+	return FALSE;
+}
+
 static gint
 e_text_event (GnomeCanvasItem *item, GdkEvent *event)
 {
@@ -1951,6 +1993,7 @@ e_text_event (GnomeCanvasItem *item, GdkEvent *event)
 		}
 		break;
 	case GDK_ENTER_NOTIFY:
+		text->tooltip_timeout = gtk_timeout_add (3000, _do_tooltip, text);
 		text->pointer_in = TRUE;
 		if (text->editing) {
 			if ( text->default_cursor_shown ) {
@@ -1960,6 +2003,12 @@ e_text_event (GnomeCanvasItem *item, GdkEvent *event)
 		}
 		break;
 	case GDK_LEAVE_NOTIFY:
+		gtk_timeout_remove (text->tooltip_timeout);
+		if (text->tooltip_window) {
+			gtk_widget_destroy (text->tooltip_window);
+			text->tooltip_window = NULL;
+		}
+
 		text->pointer_in = FALSE;
 		if (text->editing) {
 			if ( ! text->default_cursor_shown ) {
diff --git a/widgets/text/e-text.h b/widgets/text/e-text.h
index 1254e0fd1c..c44589d3ae 100644
--- a/widgets/text/e-text.h
+++ b/widgets/text/e-text.h
@@ -173,6 +173,9 @@ struct _EText {
 
 	GdkCursor *default_cursor;      /* Default cursor (arrow) */
 	GdkCursor *i_cursor;            /* I beam cursor */
+
+	gint tooltip_timeout;           /* Timeout for the tooltip */
+	GtkWidget *tooltip_window;      /* GtkWindow for displaying the tooltip */
 };
 
 struct _ETextClass {