/* Private macros and constants. */
/*========================================================*/
+#define CURSOR_COLOR GL_COLOR_A (0, 0, 255, 128)
+
+#define CURSOR_ON_TIME 800
+#define CURSOR_OFF_TIME 400
+
/*========================================================*/
/* Private types. */
/*========================================================*/
struct _glViewTextPrivate {
- GList *item_list;
+ GList *item_list;
+
+ GnomeCanvasItem *cursor;
+ gboolean cursor_visible;
+ gboolean cursor_state;
+ guint cursor_timeout;
/* Page 0 widgets */
GtkWidget *text_entry;
static void draw_hacktext (glViewText *view_text);
+static void draw_cursor (glViewText *view_text);
+
+static void mark_set_cb (GtkTextBuffer *textbuffer,
+ GtkTextIter *iter,
+ GtkTextMark *mark,
+ glViewText *view_text);
+
+static void blink_start (glViewText *view_text);
+static void blink_stop (glViewText *view_text);
+static gboolean blink_cb (glViewText *view_text);
+
+static gint item_event_cb (GnomeCanvasItem *item,
+ GdkEvent *event,
+ glViewObject *view_object);
+
\f
/*****************************************************************************/
/* Boilerplate object stuff. */
{
glViewText *view_text;
GtkMenu *menu;
+ GtkTextBuffer *buffer;
+ GnomeCanvasItem *group;
gl_debug (DEBUG_VIEW, "START");
g_return_if_fail (object && GL_IS_LABEL_TEXT (object));
GL_LABEL_OBJECT(object),
GL_VIEW_HIGHLIGHT_SIMPLE);
+ group = gl_view_object_get_group (GL_VIEW_OBJECT(view_text));
+
/* Create analogous canvas item. */
draw_hacktext (view_text);
+ draw_cursor (view_text);
g_signal_connect (G_OBJECT (object), "changed",
G_CALLBACK (update_view_text_cb), view_text);
+ g_signal_connect (G_OBJECT (group), "event",
+ G_CALLBACK (item_event_cb), view_text);
+
+ buffer = gl_label_text_get_buffer (object);
+ g_signal_connect (G_OBJECT (buffer), "mark-set",
+ G_CALLBACK (mark_set_cb), view_text);
+
gl_debug (DEBUG_VIEW, "END");
return GL_VIEW_OBJECT (view_text);
/* Adjust appearance of analogous canvas item. */
draw_hacktext (view_text);
+ draw_cursor (view_text);
gl_debug (DEBUG_VIEW, "END");
}
static void
draw_hacktext (glViewText *view_text)
{
- glLabelObject *object;
- GnomeCanvasItem *item;
- GList *lines;
- gchar *text;
- gchar *font_family;
- GnomeFontWeight font_weight;
- gboolean font_italic_flag;
- gdouble font_size;
- guint color;
- GtkJustification just;
- GnomeFont *font;
- GnomeGlyphList *glyphlist;
- ArtDRect bbox;
- gdouble affine[6];
- gdouble x_offset, y_offset, w, object_w, object_h;
- gint i;
+ glLabelObject *object;
+ GnomeCanvasItem *item;
+ GtkTextBuffer *buffer;
+ GtkTextIter start, end;
+ gchar *text;
+ gchar *font_family;
+ GnomeFontWeight font_weight;
+ gboolean font_italic_flag;
+ gdouble font_size;
+ guint color;
+ GtkJustification just;
+ GnomeFont *font;
+ GnomeGlyphList *glyphlist;
+ ArtDRect bbox;
+ gdouble affine[6];
+ gdouble x_offset, y_offset, w, object_w, object_h;
+ gint i;
gchar **line;
- GList *li;
+ GList *li;
gl_debug (DEBUG_VIEW, "START");
&font_family, &font_size,
&font_weight, &font_italic_flag,
&color, &just);
- lines = gl_label_text_get_lines(GL_LABEL_TEXT(object));
- text = gl_text_node_lines_expand (lines, NULL);
+ buffer = gl_label_text_get_buffer(GL_LABEL_TEXT(object));
+ gtk_text_buffer_get_bounds (buffer, &start, &end);
+ text = gtk_text_buffer_get_text (buffer, &start, &end, FALSE);
line = g_strsplit (text, "\n", -1);
/* remove previous items from group. */
/* clean up */
g_strfreev (line);
- gl_text_node_lines_free (&lines);
g_free (text);
gl_debug (DEBUG_VIEW, "END");
}
+/*--------------------------------------------------------------------------*/
+/* PRIVATE. Draw cursor to item (group). */
+/*--------------------------------------------------------------------------*/
+static void
+draw_cursor (glViewText *view_text)
+{
+ glLabelObject *object;
+ GnomeCanvasItem *item;
+ GtkTextBuffer *buffer;
+ GtkTextIter start, end;
+ gchar *text;
+ gchar *font_family;
+ GnomeFontWeight font_weight;
+ gboolean font_italic_flag;
+ gdouble font_size;
+ guint color;
+ GtkJustification just;
+ GnomeFont *font;
+ GnomeGlyphList *glyphlist;
+ ArtDRect bbox;
+ gdouble affine[6];
+ gdouble x_offset, w, object_w, object_h;
+ gint i;
+ gchar **line;
+ GList *li;
+ GtkTextMark *cursor_mark, *bound_mark;
+ GtkTextIter cursor_iter, bound_iter;
+ gint cursor_line, cursor_char, bound_line, bound_char;
+ gboolean selection_flag;
+
+ gl_debug (DEBUG_VIEW, "START");
+
+ /* Query label object and properties */
+ object = gl_view_object_get_object (GL_VIEW_OBJECT(view_text));
+ gl_label_object_get_size (object, &object_w, &object_h);
+ gl_label_text_get_props (GL_LABEL_TEXT(object),
+ &font_family, &font_size,
+ &font_weight, &font_italic_flag,
+ &color, &just);
+ buffer = gl_label_text_get_buffer(GL_LABEL_TEXT(object));
+ gtk_text_buffer_get_bounds (buffer, &start, &end);
+ text = gtk_text_buffer_get_text (buffer, &start, &end, FALSE);
+ line = g_strsplit (text, "\n", -1);
+
+ /* Get cursor and selection information. */
+ cursor_mark = gtk_text_buffer_get_insert (buffer);
+ bound_mark = gtk_text_buffer_get_selection_bound (buffer);
+ gtk_text_buffer_get_iter_at_mark (buffer, &cursor_iter, cursor_mark);
+ gtk_text_buffer_get_iter_at_mark (buffer, &bound_iter, bound_mark);
+ cursor_line = gtk_text_iter_get_line (&cursor_iter);
+ cursor_char = gtk_text_iter_get_visible_line_index (&cursor_iter);
+ bound_line = gtk_text_iter_get_line (&bound_iter);
+ bound_char = gtk_text_iter_get_visible_line_index (&bound_iter);
+ selection_flag = !gtk_text_iter_equal (&cursor_iter, &bound_iter);
+
+ /* get Gnome Font */
+ font = gnome_font_find_closest_from_weight_slant (font_family,
+ font_weight,
+ font_italic_flag,
+ font_size);
+ art_affine_identity (affine);
+
+ for (i = 0; line[i] != NULL; i++) {
+
+ if ( i == cursor_line ) {
+ GnomeCanvasPoints *points;
+
+ glyphlist = gnome_glyphlist_from_text_dumb (font, color,
+ 0.0, 0.0,
+ line[i]);
+
+ gnome_glyphlist_bbox (glyphlist, affine, 0, &bbox);
+ gnome_glyphlist_unref (glyphlist);
+ w = bbox.x1;
+
+ switch (just) {
+ case GTK_JUSTIFY_LEFT:
+ x_offset = 0.0;
+ break;
+ case GTK_JUSTIFY_CENTER:
+ x_offset = (object_w - w) / 2.0;
+ break;
+ case GTK_JUSTIFY_RIGHT:
+ x_offset = object_w - w;
+ break;
+ default:
+ x_offset = 0.0;
+ break; /* shouldn't happen */
+ }
+
+ glyphlist = gnome_glyphlist_from_text_sized_dumb (font, color,
+ 0.0, 0.0,
+ line[i],
+ cursor_char);
+ gnome_glyphlist_bbox (glyphlist, affine, 0, &bbox);
+ gnome_glyphlist_unref (glyphlist);
+ x_offset += bbox.x1;
+
+ points = gnome_canvas_points_new (2);
+ points->coords[0] = x_offset;
+ points->coords[1] = i*font_size;
+ points->coords[2] = x_offset;
+ points->coords[3] = (i+1)*font_size;
+
+ if (view_text->private->cursor) {
+ gtk_object_destroy (GTK_OBJECT (view_text->private->cursor));
+ }
+ view_text->private->cursor =
+ gl_view_object_item_new (GL_VIEW_OBJECT(view_text),
+ gnome_canvas_line_get_type (),
+ "points", points,
+ "fill_color_rgba", CURSOR_COLOR,
+ "width_pixels", 2,
+ NULL);
+ gnome_canvas_points_free (points);
+
+ if ( !view_text->private->cursor_visible ) {
+ gnome_canvas_item_hide (view_text->private->cursor);
+ }
+
+ }
+
+ }
+
+ /* clean up */
+ g_strfreev (line);
+ g_free (text);
+
+ gl_debug (DEBUG_VIEW, "END");
+}
+
+/*--------------------------------------------------------------------------*/
+/* PRIVATE. Text buffer "mark-set" callback. Tracks cursor position. */
+/*--------------------------------------------------------------------------*/
+static void
+mark_set_cb (GtkTextBuffer *textbuffer,
+ GtkTextIter *iter,
+ GtkTextMark *mark,
+ glViewText *view_text)
+{
+ const gchar *mark_name;
+
+ mark_name = gtk_text_mark_get_name (mark);
+
+ if ( mark_name && !strcmp (mark_name, "insert") ) {
+ draw_cursor (view_text);
+ }
+}
+
+
+
+/*--------------------------------------------------------------------------*/
+/* PRIVATE. Start the cursor blinking. */
+/*--------------------------------------------------------------------------*/
+static void
+blink_start (glViewText *view_text)
+{
+ if ( !view_text->private->cursor_visible ) return;
+
+ view_text->private->cursor_state = TRUE;
+ gnome_canvas_item_show (view_text->private->cursor);
+ view_text->private->cursor_timeout =
+ gtk_timeout_add (CURSOR_ON_TIME, (GtkFunction)blink_cb, view_text);
+}
+
+/*--------------------------------------------------------------------------*/
+/* PRIVATE. Stop the cursor blinking. */
+/*--------------------------------------------------------------------------*/
+static void
+blink_stop (glViewText *view_text)
+{
+ if ( view_text->private->cursor_timeout ) {
+ gtk_timeout_remove (view_text->private->cursor_timeout);
+ view_text->private->cursor_timeout = 0;
+ }
+
+ gnome_canvas_item_hide (view_text->private->cursor);
+}
+
+/*--------------------------------------------------------------------------*/
+/* PRIVATE. Blink cursor timeout callback. */
+/*--------------------------------------------------------------------------*/
+static gboolean
+blink_cb (glViewText *view_text)
+{
+ if ( view_text->private->cursor_visible ) {
+
+ view_text->private->cursor_state =
+ !view_text->private->cursor_state;
+
+
+ if ( view_text->private->cursor_state ) {
+ gnome_canvas_item_show (view_text->private->cursor);
+ view_text->private->cursor_timeout =
+ gtk_timeout_add (CURSOR_ON_TIME,
+ (GtkFunction)blink_cb, view_text);
+ } else {
+ gnome_canvas_item_hide (view_text->private->cursor);
+ view_text->private->cursor_timeout =
+ gtk_timeout_add (CURSOR_OFF_TIME,
+ (GtkFunction)blink_cb, view_text);
+ }
+
+ }
+
+ return FALSE;
+}
+
+/*--------------------------------------------------------------------------*/
+/* PRIVATE. Item event callback. */
+/*--------------------------------------------------------------------------*/
+static gint
+item_event_cb (GnomeCanvasItem *item,
+ GdkEvent *event,
+ glViewObject *view_object)
+{
+ gl_debug (DEBUG_VIEW, "");
+}
+
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