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authorMatthew Barnes <mbarnes@redhat.com>2012-12-10 21:09:59 +0800
committerMatthew Barnes <mbarnes@redhat.com>2012-12-13 03:33:43 +0800
commitd09d8de870b6697c8a8b262e7e077b871a69b315 (patch)
tree3b718882e7a0bb0a996daf2967a033d91714c9b5 /e-util/e-text.c
parentb61331ed03ac1c7a9b8614e25510040b9c60ae02 (diff)
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Consolidate base utility libraries into libeutil.
Evolution consists of entirely too many small utility libraries, which increases linking and loading time, places a burden on higher layers of the application (e.g. modules) which has to remember to link to all the small in-tree utility libraries, and makes it difficult to generate API documentation for these utility libraries in one Gtk-Doc module. Merge the following utility libraries under the umbrella of libeutil, and enforce a single-include policy on libeutil so we can reorganize the files as desired without disrupting its pseudo-public API. libemail-utils/libemail-utils.la libevolution-utils/libevolution-utils.la filter/libfilter.la widgets/e-timezone-dialog/libetimezonedialog.la widgets/menus/libmenus.la widgets/misc/libemiscwidgets.la widgets/table/libetable.la widgets/text/libetext.la This also merges libedataserverui from the Evolution-Data-Server module, since Evolution is its only consumer nowadays, and I'd like to make some improvements to those APIs without concern for backward-compatibility. And finally, start a Gtk-Doc module for libeutil. It's going to be a project just getting all the symbols _listed_ much less _documented_. But the skeletal structure is in place and I'm off to a good start.
Diffstat (limited to 'e-util/e-text.c')
-rw-r--r--e-util/e-text.c3405
1 files changed, 3405 insertions, 0 deletions
diff --git a/e-util/e-text.c b/e-util/e-text.c
new file mode 100644
index 0000000000..d23decad86
--- /dev/null
+++ b/e-util/e-text.c
@@ -0,0 +1,3405 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/*
+ * e-text.c - Text item for evolution.
+ * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
+ *
+ * Authors:
+ * Chris Lahey <clahey@ximian.com>
+ * Jon Trowbridge <trow@ximian.com>
+ *
+ * A majority of code taken from:
+ *
+ * Text item type for GnomeCanvas widget
+ *
+ * GnomeCanvas is basically a port of the Tk toolkit's most excellent
+ * canvas widget. Tk is copyrighted by the Regents of the University
+ * of California, Sun Microsystems, and other parties.
+ *
+ * Copyright (C) 1998 The Free Software Foundation
+ *
+ * Author: Federico Mena <federico@nuclecu.unam.mx>
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "e-text.h"
+
+#include <math.h>
+#include <ctype.h>
+#include <string.h>
+
+#include <glib/gi18n.h>
+#include <gtk/gtk.h>
+#include <gdk/gdkkeysyms.h>
+
+#include "e-canvas-utils.h"
+#include "e-canvas.h"
+#include "e-marshal.h"
+#include "e-text-event-processor-emacs-like.h"
+#include "e-unicode.h"
+#include "gal-a11y-e-text.h"
+
+G_DEFINE_TYPE (EText, e_text, GNOME_TYPE_CANVAS_ITEM)
+
+enum {
+ E_TEXT_CHANGED,
+ E_TEXT_ACTIVATE,
+ E_TEXT_KEYPRESS,
+ E_TEXT_POPULATE_POPUP,
+ E_TEXT_LAST_SIGNAL
+};
+
+static GQuark e_text_signals[E_TEXT_LAST_SIGNAL] = { 0 };
+
+/* Object argument IDs */
+enum {
+ PROP_0,
+ PROP_MODEL,
+ PROP_EVENT_PROCESSOR,
+ PROP_TEXT,
+ PROP_BOLD,
+ PROP_STRIKEOUT,
+ PROP_ANCHOR,
+ PROP_JUSTIFICATION,
+ PROP_CLIP_WIDTH,
+ PROP_CLIP_HEIGHT,
+ PROP_CLIP,
+ PROP_FILL_CLIP_RECTANGLE,
+ PROP_X_OFFSET,
+ PROP_Y_OFFSET,
+ PROP_FILL_COLOR,
+ PROP_FILL_COLOR_GDK,
+ PROP_FILL_COLOR_RGBA,
+ PROP_TEXT_WIDTH,
+ PROP_TEXT_HEIGHT,
+ PROP_EDITABLE,
+ PROP_USE_ELLIPSIS,
+ PROP_ELLIPSIS,
+ PROP_LINE_WRAP,
+ PROP_BREAK_CHARACTERS,
+ PROP_MAX_LINES,
+ PROP_WIDTH,
+ PROP_HEIGHT,
+ PROP_ALLOW_NEWLINES,
+ PROP_CURSOR_POS,
+ PROP_IM_CONTEXT,
+ PROP_HANDLE_POPUP
+};
+
+static void e_text_command (ETextEventProcessor *tep,
+ ETextEventProcessorCommand *command,
+ gpointer data);
+
+static void e_text_text_model_changed (ETextModel *model,
+ EText *text);
+static void e_text_text_model_reposition (ETextModel *model,
+ ETextModelReposFn fn,
+ gpointer repos_data,
+ gpointer data);
+
+static void _get_tep (EText *text);
+
+static void calc_height (EText *text);
+
+static gboolean show_pango_rectangle (EText *text, PangoRectangle rect);
+
+static void e_text_do_popup (EText *text,
+ GdkEvent *event_button,
+ gint position);
+
+static void e_text_update_primary_selection (EText *text);
+static void e_text_paste (EText *text, GdkAtom selection);
+static void e_text_insert (EText *text, const gchar *string);
+static void e_text_reset_im_context (EText *text);
+
+static void reset_layout_attrs (EText *text);
+
+/* IM Context Callbacks */
+static void e_text_commit_cb (GtkIMContext *context,
+ const gchar *str,
+ EText *text);
+static void e_text_preedit_changed_cb (GtkIMContext *context,
+ EText *text);
+static gboolean e_text_retrieve_surrounding_cb (GtkIMContext *context,
+ EText *text);
+static gboolean e_text_delete_surrounding_cb (GtkIMContext *context,
+ gint offset,
+ gint n_chars,
+ EText *text);
+
+static GdkAtom clipboard_atom = GDK_NONE;
+
+static void
+disconnect_im_context (EText *text)
+{
+ if (!text || !text->im_context)
+ return;
+
+ g_signal_handlers_disconnect_matched (
+ text->im_context, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, text);
+ text->im_context_signals_registered = FALSE;
+}
+
+/* Dispose handler for the text item */
+static void
+e_text_dispose (GObject *object)
+{
+ EText *text;
+
+ g_return_if_fail (object != NULL);
+ g_return_if_fail (E_IS_TEXT (object));
+
+ text = E_TEXT (object);
+
+ if (text->model_changed_signal_id)
+ g_signal_handler_disconnect (
+ text->model,
+ text->model_changed_signal_id);
+ text->model_changed_signal_id = 0;
+
+ if (text->model_repos_signal_id)
+ g_signal_handler_disconnect (
+ text->model,
+ text->model_repos_signal_id);
+ text->model_repos_signal_id = 0;
+
+ if (text->model)
+ g_object_unref (text->model);
+ text->model = NULL;
+
+ if (text->tep_command_id)
+ g_signal_handler_disconnect (
+ text->tep,
+ text->tep_command_id);
+ text->tep_command_id = 0;
+
+ if (text->tep)
+ g_object_unref (text->tep);
+ text->tep = NULL;
+
+ g_free (text->revert);
+ text->revert = NULL;
+
+ 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;
+ }
+
+ if (text->dbl_timeout) {
+ g_source_remove (text->dbl_timeout);
+ text->dbl_timeout = 0;
+ }
+
+ if (text->tpl_timeout) {
+ g_source_remove (text->tpl_timeout);
+ text->tpl_timeout = 0;
+ }
+
+ if (text->layout) {
+ g_object_unref (text->layout);
+ text->layout = NULL;
+ }
+
+ if (text->im_context) {
+ disconnect_im_context (text);
+ g_object_unref (text->im_context);
+ text->im_context = NULL;
+ }
+
+ if (text->font_desc) {
+ pango_font_description_free (text->font_desc);
+ text->font_desc = NULL;
+ }
+
+ /* Chain up to parent's dispose() method. */
+ G_OBJECT_CLASS (e_text_parent_class)->dispose (object);
+}
+
+static void
+insert_preedit_text (EText *text)
+{
+ PangoAttrList *attrs = NULL;
+ PangoAttrList *preedit_attrs = NULL;
+ gchar *preedit_string = NULL;
+ GString *tmp_string = g_string_new (NULL);
+ gint length = 0, cpos = 0;
+ gboolean new_attrs = FALSE;
+
+ if (text->layout == NULL || !GTK_IS_IM_CONTEXT (text->im_context))
+ return;
+
+ text->text = e_text_model_get_text (text->model);
+ length = strlen (text->text);
+
+ g_string_prepend_len (tmp_string, text->text,length);
+
+ /* we came into this function only when text->preedit_len was not 0
+ * so we can safely fetch the preedit string */
+ gtk_im_context_get_preedit_string (
+ text->im_context, &preedit_string, &preedit_attrs, NULL);
+
+ if (preedit_string && g_utf8_validate (preedit_string, -1, NULL)) {
+
+ text->preedit_len = strlen (preedit_string);
+
+ cpos = g_utf8_offset_to_pointer (
+ text->text, text->selection_start) - text->text;
+
+ g_string_insert (tmp_string, cpos, preedit_string);
+
+ reset_layout_attrs (text);
+
+ attrs = pango_layout_get_attributes (text->layout);
+ if (!attrs) {
+ attrs = pango_attr_list_new ();
+ new_attrs = TRUE;
+ }
+
+ pango_layout_set_text (text->layout, tmp_string->str, tmp_string->len);
+
+ pango_attr_list_splice (attrs, preedit_attrs, cpos, text->preedit_len);
+
+ if (new_attrs) {
+ pango_layout_set_attributes (text->layout, attrs);
+ pango_attr_list_unref (attrs);
+ }
+ } else
+ text->preedit_len = 0;
+
+ if (preedit_string)
+ g_free (preedit_string);
+ if (preedit_attrs)
+ pango_attr_list_unref (preedit_attrs);
+ if (tmp_string)
+ g_string_free (tmp_string, TRUE);
+}
+
+static void
+reset_layout_attrs (EText *text)
+{
+ PangoAttrList *attrs = NULL;
+ gint object_count;
+
+ if (text->layout == NULL)
+ return;
+
+ object_count = e_text_model_object_count (text->model);
+
+ if (text->bold || text->strikeout || object_count > 0) {
+ gint length = 0;
+ gint i;
+
+ attrs = pango_attr_list_new ();
+
+ for (i = 0; i < object_count; i++) {
+ gint start_pos, end_pos;
+ PangoAttribute *attr;
+
+ attr = pango_attr_underline_new (PANGO_UNDERLINE_SINGLE);
+
+ e_text_model_get_nth_object_bounds (
+ text->model, i, &start_pos, &end_pos);
+
+ attr->start_index = g_utf8_offset_to_pointer (
+ text->text, start_pos) - text->text;
+ attr->end_index = g_utf8_offset_to_pointer (
+ text->text, end_pos) - text->text;
+
+ pango_attr_list_insert (attrs, attr);
+ }
+
+ if (text->bold || text->strikeout)
+ length = strlen (text->text);
+
+ if (text->bold) {
+ PangoAttribute *attr = pango_attr_weight_new (PANGO_WEIGHT_BOLD);
+ attr->start_index = 0;
+ attr->end_index = length;
+
+ pango_attr_list_insert_before (attrs, attr);
+ }
+ if (text->strikeout) {
+ PangoAttribute *attr = pango_attr_strikethrough_new (TRUE);
+ attr->start_index = 0;
+ attr->end_index = length;
+
+ pango_attr_list_insert_before (attrs, attr);
+ }
+ }
+
+ pango_layout_set_attributes (text->layout, attrs);
+
+ if (attrs)
+ pango_attr_list_unref (attrs);
+
+ calc_height (text);
+}
+
+static void
+create_layout (EText *text)
+{
+ GnomeCanvasItem *item = GNOME_CANVAS_ITEM (text);
+
+ if (text->layout)
+ return;
+
+ text->layout = gtk_widget_create_pango_layout (
+ GTK_WIDGET (item->canvas), text->text);
+ if (text->line_wrap)
+ pango_layout_set_width (
+ text->layout, text->clip_width < 0
+ ? -1 : text->clip_width * PANGO_SCALE);
+ reset_layout_attrs (text);
+}
+
+static void
+reset_layout (EText *text)
+{
+ GnomeCanvasItem *item = GNOME_CANVAS_ITEM (text);
+
+ if (text->layout == NULL) {
+ create_layout (text);
+ }
+ else {
+ GtkStyle *style;
+
+ style = gtk_widget_get_style (GTK_WIDGET (item->canvas));
+
+ if (text->font_desc) {
+ pango_font_description_free (text->font_desc);
+ }
+ text->font_desc = pango_font_description_new ();
+ if (!pango_font_description_get_size_is_absolute (style->font_desc))
+ pango_font_description_set_size (
+ text->font_desc,
+ pango_font_description_get_size (style->font_desc));
+ else
+ pango_font_description_set_absolute_size (
+ text->font_desc,
+ pango_font_description_get_size (style->font_desc));
+ pango_font_description_set_family (
+ text->font_desc,
+ pango_font_description_get_family (style->font_desc));
+ pango_layout_set_font_description (text->layout, text->font_desc);
+
+ pango_layout_set_text (text->layout, text->text, -1);
+ reset_layout_attrs (text);
+ }
+
+ if (!text->button_down) {
+ PangoRectangle strong_pos, weak_pos;
+ gchar *offs = g_utf8_offset_to_pointer (text->text, text->selection_start);
+
+ pango_layout_get_cursor_pos (
+ text->layout, offs - text->text,
+ &strong_pos, &weak_pos);
+
+ if (strong_pos.x != weak_pos.x ||
+ strong_pos.y != weak_pos.y ||
+ strong_pos.width != weak_pos.width ||
+ strong_pos.height != weak_pos.height)
+ show_pango_rectangle (text, weak_pos);
+
+ show_pango_rectangle (text, strong_pos);
+ }
+}
+
+static void
+e_text_text_model_changed (ETextModel *model,
+ EText *text)
+{
+ gint model_len = e_text_model_get_text_length (model);
+ text->text = e_text_model_get_text (model);
+
+ /* Make sure our selection doesn't extend past the bounds of our text. */
+ text->selection_start = CLAMP (text->selection_start, 0, model_len);
+ text->selection_end = CLAMP (text->selection_end, 0, model_len);
+
+ text->needs_reset_layout = 1;
+ text->needs_split_into_lines = 1;
+ text->needs_redraw = 1;
+ e_canvas_item_request_reflow (GNOME_CANVAS_ITEM (text));
+ gnome_canvas_item_request_update (GNOME_CANVAS_ITEM (text));
+
+ g_signal_emit (text, e_text_signals[E_TEXT_CHANGED], 0);
+}
+
+static void
+e_text_text_model_reposition (ETextModel *model,
+ ETextModelReposFn fn,
+ gpointer repos_data,
+ gpointer user_data)
+{
+ EText *text = E_TEXT (user_data);
+ gint model_len = e_text_model_get_text_length (model);
+
+ text->selection_start = fn (text->selection_start, repos_data);
+ text->selection_end = fn (text->selection_end, repos_data);
+
+ /* Our repos function should make sure we don't overrun the buffer, but it never
+ * hurts to be paranoid. */
+ text->selection_start = CLAMP (text->selection_start, 0, model_len);
+ text->selection_end = CLAMP (text->selection_end, 0, model_len);
+
+ if (text->selection_start > text->selection_end) {
+ gint tmp = text->selection_start;
+ text->selection_start = text->selection_end;
+ text->selection_end = tmp;
+ }
+}
+
+static void
+get_bounds (EText *text,
+ gdouble *px1,
+ gdouble *py1,
+ gdouble *px2,
+ gdouble *py2)
+{
+ GnomeCanvasItem *item;
+ gdouble wx, wy, clip_width, clip_height;
+
+ item = GNOME_CANVAS_ITEM (text);
+
+ /* Get canvas pixel coordinates for text position */
+
+ wx = 0;
+ wy = 0;
+ gnome_canvas_item_i2w (item, &wx, &wy);
+ gnome_canvas_w2c (item->canvas, wx, wy, &text->cx, &text->cy);
+ gnome_canvas_w2c (item->canvas, wx, wy, &text->clip_cx, &text->clip_cy);
+
+ if (text->clip_width < 0)
+ clip_width = text->width;
+ else
+ clip_width = text->clip_width;
+
+ if (text->clip_height < 0)
+ clip_height = text->height;
+ else
+ clip_height = text->clip_height;
+
+ /* Get canvas pixel coordinates for clip rectangle position */
+ text->clip_cwidth = clip_width;
+ text->clip_cheight = clip_height;
+
+ text->text_cx = text->cx;
+ text->text_cy = text->cy;
+
+ /* Bounds */
+
+ if (text->clip) {
+ *px1 = text->clip_cx;
+ *py1 = text->clip_cy;
+ *px2 = text->clip_cx + text->clip_cwidth;
+ *py2 = text->clip_cy + text->clip_cheight;
+ } else {
+ *px1 = text->cx;
+ *py1 = text->cy;
+ *px2 = text->cx + text->width;
+ *py2 = text->cy + text->height;
+ }
+}
+
+static void
+calc_height (EText *text)
+{
+ GnomeCanvasItem *item;
+ gint old_height;
+ gint old_width;
+ gint width = 0;
+ gint height = 0;
+
+ item = GNOME_CANVAS_ITEM (text);
+
+ /* Calculate text dimensions */
+
+ old_height = text->height;
+ old_width = text->width;
+
+ if (text->layout)
+ pango_layout_get_pixel_size (text->layout, &width, &height);
+
+ text->height = height;
+ text->width = width;
+
+ if (old_height != text->height || old_width != text->width)
+ e_canvas_item_request_parent_reflow (item);
+}
+
+static void
+calc_ellipsis (EText *text)
+{
+/* FIXME: a pango layout per calc_ellipsis sucks */
+ gint width;
+ PangoLayout *layout = gtk_widget_create_pango_layout (
+ GTK_WIDGET (GNOME_CANVAS_ITEM (text)->canvas),
+ text->ellipsis ? text->ellipsis : "...");
+ pango_layout_get_size (layout, &width, NULL);
+
+ text->ellipsis_width = width;
+
+ g_object_unref (layout);
+}
+
+static void
+split_into_lines (EText *text)
+{
+ text->num_lines = pango_layout_get_line_count (text->layout);
+}
+
+/* Set_arg handler for the text item */
+static void
+e_text_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ GnomeCanvasItem *item;
+ EText *text;
+ GdkColor color = { 0, 0, 0, 0, };
+ GdkColor *pcolor;
+
+ gboolean needs_update = 0;
+ gboolean needs_reflow = 0;
+
+ item = GNOME_CANVAS_ITEM (object);
+ text = E_TEXT (object);
+
+ switch (property_id) {
+ case PROP_MODEL:
+
+ if (text->model_changed_signal_id)
+ g_signal_handler_disconnect (
+ text->model,
+ text->model_changed_signal_id);
+
+ if (text->model_repos_signal_id)
+ g_signal_handler_disconnect (
+ text->model,
+ text->model_repos_signal_id);
+
+ g_object_unref (text->model);
+ text->model = E_TEXT_MODEL (g_value_get_object (value));
+ g_object_ref (text->model);
+
+ text->model_changed_signal_id = g_signal_connect (
+ text->model, "changed",
+ G_CALLBACK (e_text_text_model_changed), text);
+
+ text->model_repos_signal_id = g_signal_connect (
+ text->model, "reposition",
+ G_CALLBACK (e_text_text_model_reposition), text);
+
+ text->text = e_text_model_get_text (text->model);
+ g_signal_emit (text, e_text_signals[E_TEXT_CHANGED], 0);
+
+ text->needs_split_into_lines = 1;
+ needs_reflow = 1;
+ break;
+
+ case PROP_EVENT_PROCESSOR:
+ if (text->tep && text->tep_command_id)
+ g_signal_handler_disconnect (
+ text->tep,
+ text->tep_command_id);
+ if (text->tep) {
+ g_object_unref (text->tep);
+ }
+ text->tep = E_TEXT_EVENT_PROCESSOR (g_value_get_object (value));
+ g_object_ref (text->tep);
+
+ text->tep_command_id = g_signal_connect (
+ text->tep, "command",
+ G_CALLBACK (e_text_command), text);
+
+ if (!text->allow_newlines)
+ g_object_set (
+ text->tep,
+ "allow_newlines", FALSE,
+ NULL);
+ break;
+
+ case PROP_TEXT:
+ e_text_model_set_text (text->model, g_value_get_string (value));
+ break;
+
+ case PROP_BOLD:
+ text->bold = g_value_get_boolean (value);
+
+ text->needs_redraw = 1;
+ text->needs_recalc_bounds = 1;
+ if (text->line_wrap)
+ text->needs_split_into_lines = 1;
+ else {
+ text->needs_calc_height = 1;
+ }
+ needs_update = 1;
+ needs_reflow = 1;
+ break;
+
+ case PROP_STRIKEOUT:
+ text->strikeout = g_value_get_boolean (value);
+ text->needs_redraw = 1;
+ needs_update = 1;
+ break;
+
+ case PROP_JUSTIFICATION:
+ text->justification = g_value_get_enum (value);
+ text->needs_redraw = 1;
+ needs_update = 1;
+ break;
+
+ case PROP_CLIP_WIDTH:
+ text->clip_width = fabs (g_value_get_double (value));
+ calc_ellipsis (text);
+ if (text->line_wrap) {
+ if (text->layout)
+ pango_layout_set_width (
+ text->layout, text->clip_width < 0
+ ? -1 : text->clip_width * PANGO_SCALE);
+ text->needs_split_into_lines = 1;
+ } else {
+ text->needs_calc_height = 1;
+ }
+ needs_reflow = 1;
+ break;
+
+ case PROP_CLIP_HEIGHT:
+ text->clip_height = fabs (g_value_get_double (value));
+ text->needs_recalc_bounds = 1;
+ /* toshok: kind of a hack - set needs_reset_layout
+ * here so when something about the style/them
+ * changes, we redraw the text at the proper size/with
+ * the proper font. */
+ text->needs_reset_layout = 1;
+ needs_reflow = 1;
+ break;
+
+ case PROP_CLIP:
+ text->clip = g_value_get_boolean (value);
+ calc_ellipsis (text);
+ if (text->line_wrap)
+ text->needs_split_into_lines = 1;
+ else {
+ text->needs_calc_height = 1;
+ }
+ needs_reflow = 1;
+ break;
+
+ case PROP_FILL_CLIP_RECTANGLE:
+ text->fill_clip_rectangle = g_value_get_boolean (value);
+ needs_update = 1;
+ break;
+
+ case PROP_X_OFFSET:
+ text->xofs = g_value_get_double (value);
+ text->needs_recalc_bounds = 1;
+ needs_update = 1;
+ break;
+
+ case PROP_Y_OFFSET:
+ text->yofs = g_value_get_double (value);
+ text->needs_recalc_bounds = 1;
+ needs_update = 1;
+ break;
+
+ case PROP_FILL_COLOR:
+ if (g_value_get_string (value))
+ gdk_color_parse (g_value_get_string (value), &color);
+
+ text->rgba = ((color.red & 0xff00) << 16 |
+ (color.green & 0xff00) << 8 |
+ (color.blue & 0xff00) |
+ 0xff);
+ text->rgba_set = TRUE;
+ text->needs_redraw = 1;
+ needs_update = 1;
+ break;
+
+ case PROP_FILL_COLOR_GDK:
+ pcolor = g_value_get_boxed (value);
+ if (pcolor) {
+ color = *pcolor;
+ }
+
+ text->rgba = ((color.red & 0xff00) << 16 |
+ (color.green & 0xff00) << 8 |
+ (color.blue & 0xff00) |
+ 0xff);
+ text->rgba_set = TRUE;
+ text->needs_redraw = 1;
+ needs_update = 1;
+ break;
+
+ case PROP_FILL_COLOR_RGBA:
+ text->rgba = g_value_get_uint (value);
+ color.red = ((text->rgba >> 24) & 0xff) * 0x101;
+ color.green = ((text->rgba >> 16) & 0xff) * 0x101;
+ color.blue = ((text->rgba >> 8) & 0xff) * 0x101;
+ text->rgba_set = TRUE;
+ text->needs_redraw = 1;
+ needs_update = 1;
+ break;
+
+ case PROP_EDITABLE:
+ text->editable = g_value_get_boolean (value);
+ text->needs_redraw = 1;
+ needs_update = 1;
+ break;
+
+ case PROP_USE_ELLIPSIS:
+ text->use_ellipsis = g_value_get_boolean (value);
+ needs_reflow = 1;
+ break;
+
+ case PROP_ELLIPSIS:
+ if (text->ellipsis)
+ g_free (text->ellipsis);
+
+ text->ellipsis = g_strdup (g_value_get_string (value));
+ calc_ellipsis (text);
+ needs_reflow = 1;
+ break;
+
+ case PROP_LINE_WRAP:
+ text->line_wrap = g_value_get_boolean (value);
+ if (text->line_wrap) {
+ if (text->layout) {
+ pango_layout_set_width (
+ text->layout, text->width < 0
+ ? -1 : text->width * PANGO_SCALE);
+ }
+ }
+ text->needs_split_into_lines = 1;
+ needs_reflow = 1;
+ break;
+
+ case PROP_BREAK_CHARACTERS:
+ if (text->break_characters) {
+ g_free (text->break_characters);
+ text->break_characters = NULL;
+ }
+ if (g_value_get_string (value))
+ text->break_characters = g_strdup (g_value_get_string (value));
+ text->needs_split_into_lines = 1;
+ needs_reflow = 1;
+ break;
+
+ case PROP_MAX_LINES:
+ text->max_lines = g_value_get_int (value);
+ text->needs_split_into_lines = 1;
+ needs_reflow = 1;
+ break;
+
+ case PROP_WIDTH:
+ text->clip_width = fabs (g_value_get_double (value));
+ calc_ellipsis (text);
+ if (text->line_wrap) {
+ if (text->layout) {
+ pango_layout_set_width (
+ text->layout, text->width < 0 ?
+ -1 : text->width * PANGO_SCALE);
+ }
+ text->needs_split_into_lines = 1;
+ }
+ else {
+ text->needs_calc_height = 1;
+ }
+ needs_reflow = 1;
+ break;
+
+ case PROP_ALLOW_NEWLINES:
+ text->allow_newlines = g_value_get_boolean (value);
+ _get_tep (text);
+ g_object_set (
+ text->tep,
+ "allow_newlines", g_value_get_boolean (value),
+ NULL);
+ break;
+
+ case PROP_CURSOR_POS: {
+ ETextEventProcessorCommand command;
+
+ command.action = E_TEP_MOVE;
+ command.position = E_TEP_VALUE;
+ command.value = g_value_get_int (value);
+ command.time = GDK_CURRENT_TIME;
+ e_text_command (text->tep, &command, text);
+ break;
+ }
+
+ case PROP_IM_CONTEXT:
+ if (text->im_context) {
+ disconnect_im_context (text);
+ g_object_unref (text->im_context);
+ }
+
+ text->im_context = g_value_get_object (value);
+ if (text->im_context)
+ g_object_ref (text->im_context);
+
+ text->need_im_reset = TRUE;
+ break;
+
+ case PROP_HANDLE_POPUP:
+ text->handle_popup = g_value_get_boolean (value);
+ break;
+
+ default:
+ return;
+ }
+
+ if (needs_reflow)
+ e_canvas_item_request_reflow (item);
+ if (needs_update)
+ gnome_canvas_item_request_update (item);
+}
+
+/* Get_arg handler for the text item */
+static void
+e_text_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ EText *text;
+
+ text = E_TEXT (object);
+
+ switch (property_id) {
+ case PROP_MODEL:
+ g_value_set_object (value, text->model);
+ break;
+
+ case PROP_EVENT_PROCESSOR:
+ _get_tep (text);
+ g_value_set_object (value, text->tep);
+ break;
+
+ case PROP_TEXT:
+ g_value_set_string (value, text->text);
+ break;
+
+ case PROP_BOLD:
+ g_value_set_boolean (value, text->bold);
+ break;
+
+ case PROP_STRIKEOUT:
+ g_value_set_boolean (value, text->strikeout);
+ break;
+
+ case PROP_JUSTIFICATION:
+ g_value_set_enum (value, text->justification);
+ break;
+
+ case PROP_CLIP_WIDTH:
+ g_value_set_double (value, text->clip_width);
+ break;
+
+ case PROP_CLIP_HEIGHT:
+ g_value_set_double (value, text->clip_height);
+ break;
+
+ case PROP_CLIP:
+ g_value_set_boolean (value, text->clip);
+ break;
+
+ case PROP_FILL_CLIP_RECTANGLE:
+ g_value_set_boolean (value, text->fill_clip_rectangle);
+ break;
+
+ case PROP_X_OFFSET:
+ g_value_set_double (value, text->xofs);
+ break;
+
+ case PROP_Y_OFFSET:
+ g_value_set_double (value, text->yofs);
+ break;
+
+ case PROP_FILL_COLOR_RGBA:
+ g_value_set_uint (value, text->rgba);
+ break;
+
+ case PROP_TEXT_WIDTH:
+ g_value_set_double (value, text->width);
+ break;
+
+ case PROP_TEXT_HEIGHT:
+ g_value_set_double (value, text->height);
+ break;
+
+ case PROP_EDITABLE:
+ g_value_set_boolean (value, text->editable);
+ break;
+
+ case PROP_USE_ELLIPSIS:
+ g_value_set_boolean (value, text->use_ellipsis);
+ break;
+
+ case PROP_ELLIPSIS:
+ g_value_set_string (value, text->ellipsis);
+ break;
+
+ case PROP_LINE_WRAP:
+ g_value_set_boolean (value, text->line_wrap);
+ break;
+
+ case PROP_BREAK_CHARACTERS:
+ g_value_set_string (value, text->break_characters);
+ break;
+
+ case PROP_MAX_LINES:
+ g_value_set_int (value, text->max_lines);
+ break;
+
+ case PROP_WIDTH:
+ g_value_set_double (value, text->clip_width);
+ break;
+
+ case PROP_HEIGHT:
+ g_value_set_double (
+ value, text->clip &&
+ text->clip_height != -1 ?
+ text->clip_height : text->height);
+ break;
+
+ case PROP_ALLOW_NEWLINES:
+ g_value_set_boolean (value, text->allow_newlines);
+ break;
+
+ case PROP_CURSOR_POS:
+ g_value_set_int (value, text->selection_start);
+ break;
+
+ case PROP_IM_CONTEXT:
+ g_value_set_object (value, text->im_context);
+ break;
+
+ case PROP_HANDLE_POPUP:
+ g_value_set_boolean (value, text->handle_popup);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+/* Update handler for the text item */
+static void
+e_text_reflow (GnomeCanvasItem *item,
+ gint flags)
+{
+ EText *text;
+
+ text = E_TEXT (item);
+
+ if (text->needs_reset_layout) {
+ reset_layout (text);
+ text->needs_reset_layout = 0;
+ text->needs_calc_height = 1;
+ }
+
+ if (text->needs_split_into_lines) {
+ split_into_lines (text);
+
+ text->needs_split_into_lines = 0;
+ text->needs_calc_height = 1;
+ }
+
+ if (text->needs_calc_height) {
+ calc_height (text);
+ gnome_canvas_item_request_update (item);
+ text->needs_calc_height = 0;
+ text->needs_recalc_bounds = 1;
+ }
+}
+
+/* Update handler for the text item */
+static void
+e_text_update (GnomeCanvasItem *item,
+ const cairo_matrix_t *i2c,
+ gint flags)
+{
+ EText *text;
+ gdouble x1, y1, x2, y2;
+
+ text = E_TEXT (item);
+
+ if (GNOME_CANVAS_ITEM_CLASS (e_text_parent_class)->update)
+ GNOME_CANVAS_ITEM_CLASS (e_text_parent_class)->update (
+ item, i2c, flags);
+
+ if (text->needs_recalc_bounds
+ || (flags & GNOME_CANVAS_UPDATE_AFFINE)) {
+ get_bounds (text, &x1, &y1, &x2, &y2);
+ if (item->x1 != x1 ||
+ item->x2 != x2 ||
+ item->y1 != y1 ||
+ item->y2 != y2) {
+ gnome_canvas_request_redraw (
+ item->canvas, item->x1, item->y1,
+ item->x2, item->y2);
+ item->x1 = x1;
+ item->y1 = y1;
+ item->x2 = x2;
+ item->y2 = y2;
+ text->needs_redraw = 1;
+ item->canvas->need_repick = TRUE;
+ }
+ if (!text->fill_clip_rectangle)
+ item->canvas->need_repick = TRUE;
+ text->needs_recalc_bounds = 0;
+ }
+ if (text->needs_redraw) {
+ gnome_canvas_request_redraw (
+ item->canvas, item->x1, item->y1, item->x2, item->y2);
+ text->needs_redraw = 0;
+ }
+}
+
+/* Realize handler for the text item */
+static void
+e_text_realize (GnomeCanvasItem *item)
+{
+ EText *text;
+
+ text = E_TEXT (item);
+
+ if (GNOME_CANVAS_ITEM_CLASS (e_text_parent_class)->realize)
+ (* GNOME_CANVAS_ITEM_CLASS (e_text_parent_class)->realize) (item);
+
+ create_layout (text);
+
+ text->i_cursor = gdk_cursor_new (GDK_XTERM);
+ text->default_cursor = gdk_cursor_new (GDK_LEFT_PTR);
+}
+
+/* Unrealize handler for the text item */
+static void
+e_text_unrealize (GnomeCanvasItem *item)
+{
+ EText *text;
+
+ text = E_TEXT (item);
+
+ g_object_unref (text->i_cursor);
+ text->i_cursor = NULL;
+ g_object_unref (text->default_cursor);
+ text->default_cursor = NULL;
+
+ if (GNOME_CANVAS_ITEM_CLASS (e_text_parent_class)->unrealize)
+ (* GNOME_CANVAS_ITEM_CLASS (e_text_parent_class)->unrealize) (item);
+}
+
+static void
+_get_tep (EText *text)
+{
+ if (!text->tep) {
+ text->tep = e_text_event_processor_emacs_like_new ();
+
+ text->tep_command_id = g_signal_connect (
+ text->tep, "command",
+ G_CALLBACK (e_text_command), text);
+ }
+}
+
+static void
+draw_pango_rectangle (cairo_t *cr,
+ gint x1,
+ gint y1,
+ PangoRectangle rect)
+{
+ gint width = rect.width / PANGO_SCALE;
+ gint height = rect.height / PANGO_SCALE;
+
+ if (width <= 0)
+ width = 1;
+ if (height <= 0)
+ height = 1;
+
+ cairo_rectangle (
+ cr, x1 + rect.x / PANGO_SCALE,
+ y1 + rect.y / PANGO_SCALE, width, height);
+ cairo_fill (cr);
+}
+
+static gboolean
+show_pango_rectangle (EText *text,
+ PangoRectangle rect)
+{
+ gint x1 = rect.x / PANGO_SCALE;
+ gint x2 = (rect.x + rect.width) / PANGO_SCALE;
+
+ gint y1 = rect.y / PANGO_SCALE;
+ gint y2 = (rect.y + rect.height) / PANGO_SCALE;
+
+ gint new_xofs_edit = text->xofs_edit;
+ gint new_yofs_edit = text->yofs_edit;
+
+ gint clip_width, clip_height;
+
+ clip_width = text->clip_width;
+ clip_height = text->clip_height;
+
+ if (x1 < new_xofs_edit)
+ new_xofs_edit = x1;
+
+ if (y1 < new_yofs_edit)
+ new_yofs_edit = y1;
+
+ if (clip_width >= 0) {
+ if (2 + x2 - clip_width > new_xofs_edit)
+ new_xofs_edit = 2 + x2 - clip_width;
+ } else {
+ new_xofs_edit = 0;
+ }
+
+ if (clip_height >= 0) {
+ if (y2 - clip_height > new_yofs_edit)
+ new_yofs_edit = y2 - clip_height;
+ } else {
+ new_yofs_edit = 0;
+ }
+
+ if (new_xofs_edit < 0)
+ new_xofs_edit = 0;
+ if (new_yofs_edit < 0)
+ new_yofs_edit = 0;
+
+ if (new_xofs_edit != text->xofs_edit ||
+ new_yofs_edit != text->yofs_edit) {
+ text->xofs_edit = new_xofs_edit;
+ text->yofs_edit = new_yofs_edit;
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+/* Draw handler for the text item */
+static void
+e_text_draw (GnomeCanvasItem *item,
+ cairo_t *cr,
+ gint x,
+ gint y,
+ gint width,
+ gint height)
+{
+ EText *text;
+ gint xpos, ypos;
+ GnomeCanvas *canvas;
+ GtkWidget *widget;
+ GtkStyle *style;
+ GtkStateType state;
+
+ text = E_TEXT (item);
+ canvas = GNOME_CANVAS_ITEM (text)->canvas;
+ widget = GTK_WIDGET (canvas);
+ state = gtk_widget_get_state (widget);
+ style = gtk_widget_get_style (widget);
+
+ cairo_save (cr);
+
+ if (!text->rgba_set) {
+ gdk_cairo_set_source_color (cr, &style->fg[state]);
+ } else {
+ cairo_set_source_rgba (
+ cr,
+ ((text->rgba >> 24) & 0xff) / 255.0,
+ ((text->rgba >> 16) & 0xff) / 255.0,
+ ((text->rgba >> 8) & 0xff) / 255.0,
+ ( text->rgba & 0xff) / 255.0);
+ }
+
+ /* Insert preedit text only when im_context signals are connected &
+ * text->preedit_len is not zero */
+ if (text->im_context_signals_registered && text->preedit_len)
+ insert_preedit_text (text);
+
+ /* Need to reset the layout to cleanly clear the preedit buffer when
+ * typing in CJK & using backspace on the preedit */
+ if (!text->preedit_len)
+ reset_layout (text);
+
+ if (!pango_layout_get_text (text->layout)) {
+ cairo_restore (cr);
+ return;
+ }
+
+ xpos = text->text_cx;
+ ypos = text->text_cy;
+
+ xpos = xpos - x + text->xofs;
+ ypos = ypos - y + text->yofs;
+
+ cairo_save (cr);
+
+ if (text->clip) {
+ cairo_rectangle (
+ cr, xpos, ypos,
+ text->clip_cwidth - text->xofs,
+ text->clip_cheight - text->yofs);
+ cairo_clip (cr);
+ }
+
+ if (text->editing) {
+ xpos -= text->xofs_edit;
+ ypos -= text->yofs_edit;
+ }
+
+ cairo_move_to (cr, xpos, ypos);
+ pango_cairo_show_layout (cr, text->layout);
+
+ if (text->editing) {
+ if (text->selection_start != text->selection_end) {
+ cairo_region_t *clip_region = cairo_region_create ();
+ gint indices[2];
+ GtkStateType state;
+
+ state = GTK_STATE_ACTIVE;
+
+ indices[0] = MIN (
+ text->selection_start,
+ text->selection_end);
+ indices[1] = MAX (
+ text->selection_start,
+ text->selection_end);
+
+ /* convert these into byte indices */
+ indices[0] = g_utf8_offset_to_pointer (
+ text->text, indices[0]) - text->text;
+ indices[1] = g_utf8_offset_to_pointer (
+ text->text, indices[1]) - text->text;
+
+ clip_region = gdk_pango_layout_get_clip_region (
+ text->layout, xpos, ypos, indices, 1);
+ gdk_cairo_region (cr, clip_region);
+ cairo_clip (cr);
+ cairo_region_destroy (clip_region);
+
+ gdk_cairo_set_source_color (cr, &style->base[state]);
+ cairo_paint (cr);
+
+ gdk_cairo_set_source_color (cr, &style->text[state]);
+ cairo_move_to (cr, xpos, ypos);
+ pango_cairo_show_layout (cr, text->layout);
+ } else {
+ if (text->show_cursor) {
+ PangoRectangle strong_pos, weak_pos;
+ gchar *offs;
+
+ offs = g_utf8_offset_to_pointer (
+ text->text, text->selection_start);
+
+ pango_layout_get_cursor_pos (
+ text->layout, offs - text->text +
+ text->preedit_len, &strong_pos,
+ &weak_pos);
+ draw_pango_rectangle (cr, xpos, ypos, strong_pos);
+ if (strong_pos.x != weak_pos.x ||
+ strong_pos.y != weak_pos.y ||
+ strong_pos.width != weak_pos.width ||
+ strong_pos.height != weak_pos.height)
+ draw_pango_rectangle (cr, xpos, ypos, weak_pos);
+ }
+ }
+ }
+
+ cairo_restore (cr);
+ cairo_restore (cr);
+}
+
+/* Point handler for the text item */
+static GnomeCanvasItem *
+e_text_point (GnomeCanvasItem *item,
+ gdouble x,
+ gdouble y,
+ gint cx,
+ gint cy)
+{
+ EText *text;
+ gdouble clip_width;
+ gdouble clip_height;
+
+ text = E_TEXT (item);
+
+ /* The idea is to build bounding rectangles for each of the lines of
+ * text (clipped by the clipping rectangle, if it is activated) and see
+ * whether the point is inside any of these. If it is, we are done.
+ * Otherwise, calculate the distance to the nearest rectangle.
+ */
+
+ if (text->clip_width < 0)
+ clip_width = text->width;
+ else
+ clip_width = text->clip_width;
+
+ if (text->clip_height < 0)
+ clip_height = text->height;
+ else
+ clip_height = text->clip_height;
+
+ if (cx < text->clip_cx ||
+ cx > text->clip_cx + clip_width ||
+ cy < text->clip_cy ||
+ cy > text->clip_cy + clip_height)
+ return NULL;
+
+ if (text->fill_clip_rectangle || !text->text || !*text->text)
+ return item;
+
+ cx -= text->cx;
+
+ if (pango_layout_xy_to_index (text->layout, cx, cy, NULL, NULL))
+ return item;
+
+ return NULL;
+}
+
+/* Bounds handler for the text item */
+static void
+e_text_bounds (GnomeCanvasItem *item,
+ gdouble *x1,
+ gdouble *y1,
+ gdouble *x2,
+ gdouble *y2)
+{
+ EText *text;
+ gdouble width, height;
+
+ text = E_TEXT (item);
+
+ *x1 = 0;
+ *y1 = 0;
+
+ width = text->width;
+ height = text->height;
+
+ if (text->clip) {
+ if (text->clip_width >= 0)
+ width = text->clip_width;
+ if (text->clip_height >= 0)
+ height = text->clip_height;
+ }
+
+ *x2 = *x1 + width;
+ *y2 = *y1 + height;
+}
+
+static gint
+get_position_from_xy (EText *text,
+ gint x,
+ gint y)
+{
+ gint index;
+ gint trailing;
+
+ x -= text->xofs;
+ y -= text->yofs;
+
+ if (text->editing) {
+ x += text->xofs_edit;
+ y += text->yofs_edit;
+ }
+
+ x -= text->cx;
+ y -= text->cy;
+
+ pango_layout_xy_to_index (
+ text->layout, x * PANGO_SCALE,
+ y * PANGO_SCALE, &index, &trailing);
+
+ return g_utf8_pointer_to_offset (text->text, text->text + index + trailing);
+}
+
+#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 && text->clip) {
+ gint old_xofs_edit = text->xofs_edit;
+ gint old_yofs_edit = text->yofs_edit;
+
+ if (text->clip_cwidth >= 0 &&
+ text->lastx - text->clip_cx > text->clip_cwidth &&
+ text->xofs_edit < text->width - text->clip_cwidth) {
+ text->xofs_edit += 4;
+ if (text->xofs_edit > text->width - text->clip_cwidth + 1)
+ text->xofs_edit = text->width - text->clip_cwidth + 1;
+ }
+ if (text->lastx - text->clip_cx < 0 &&
+ text->xofs_edit > 0) {
+ text->xofs_edit -= 4;
+ if (text->xofs_edit < 0)
+ text->xofs_edit = 0;
+ }
+
+ if (text->clip_cheight >= 0 &&
+ text->lasty - text->clip_cy > text->clip_cheight &&
+ text->yofs_edit < text->height - text->clip_cheight) {
+ text->yofs_edit += 4;
+ if (text->yofs_edit > text->height - text->clip_cheight + 1)
+ text->yofs_edit = text->height - text->clip_cheight + 1;
+ }
+ if (text->lasty - text->clip_cy < 0 &&
+ text->yofs_edit > 0) {
+ text->yofs_edit -= 4;
+ if (text->yofs_edit < 0)
+ text->yofs_edit = 0;
+ }
+
+ if (old_xofs_edit != text->xofs_edit ||
+ old_yofs_edit != text->yofs_edit) {
+ 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;
+ redraw = TRUE;
+ }
+ }
+
+ 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) {
+ text->needs_redraw = 1;
+ gnome_canvas_item_request_update (GNOME_CANVAS_ITEM (text));
+ }
+ return TRUE;
+}
+
+static void
+start_editing (EText *text)
+{
+ if (text->editing)
+ return;
+
+ e_text_reset_im_context (text);
+
+ g_free (text->revert);
+ text->revert = g_strdup (text->text);
+
+ text->editing = TRUE;
+ if (text->pointer_in) {
+ GdkWindow *window;
+
+ window = gtk_widget_get_window (
+ GTK_WIDGET (GNOME_CANVAS_ITEM (text)->canvas));
+
+ if (text->default_cursor_shown) {
+ gdk_window_set_cursor (window, text->i_cursor);
+ text->default_cursor_shown = FALSE;
+ }
+ }
+ text->select_by_word = FALSE;
+ text->xofs_edit = 0;
+ text->yofs_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);
+}
+
+void
+e_text_stop_editing (EText *text)
+{
+ if (!text->editing)
+ return;
+
+ g_free (text->revert);
+ text->revert = NULL;
+
+ text->editing = FALSE;
+ if (!text->default_cursor_shown) {
+ GdkWindow *window;
+
+ window = gtk_widget_get_window (
+ GTK_WIDGET (GNOME_CANVAS_ITEM (text)->canvas));
+ gdk_window_set_cursor (window, text->default_cursor);
+ text->default_cursor_shown = TRUE;
+ }
+ if (text->timer) {
+ g_timer_stop (text->timer);
+ g_timer_destroy (text->timer);
+ text->timer = NULL;
+ }
+
+ text->need_im_reset = TRUE;
+ text->preedit_len = 0;
+ text->preedit_pos = 0;
+}
+
+void
+e_text_cancel_editing (EText *text)
+{
+ if (text->revert)
+ e_text_model_set_text (text->model, text->revert);
+ e_text_stop_editing (text);
+}
+
+static gboolean
+_click (gpointer data)
+{
+ *(gint *)data = 0;
+ return FALSE;
+}
+
+static gint
+e_text_event (GnomeCanvasItem *item,
+ GdkEvent *event)
+{
+ EText *text = E_TEXT (item);
+ ETextEventProcessorEvent e_tep_event;
+ GdkWindow *window;
+ gint return_val = 0;
+
+ if (!text->model)
+ return 0;
+
+ window = gtk_widget_get_window (GTK_WIDGET (item->canvas));
+
+ e_tep_event.type = event->type;
+ switch (event->type) {
+ case GDK_FOCUS_CHANGE:
+ if (text->editable) {
+ GdkEventFocus *focus_event;
+ focus_event = (GdkEventFocus *) event;
+ if (focus_event->in) {
+ if (text->im_context) {
+ if (!text->im_context_signals_registered) {
+ g_signal_connect (
+ text->im_context, "commit",
+ G_CALLBACK (e_text_commit_cb), text);
+ g_signal_connect (
+ text->im_context, "preedit_changed",
+ G_CALLBACK (e_text_preedit_changed_cb), text);
+ g_signal_connect (
+ text->im_context, "retrieve_surrounding",
+ G_CALLBACK (e_text_retrieve_surrounding_cb), text);
+ g_signal_connect (
+ text->im_context, "delete_surrounding",
+ G_CALLBACK (e_text_delete_surrounding_cb), text);
+ text->im_context_signals_registered = TRUE;
+ }
+ gtk_im_context_focus_in (text->im_context);
+ }
+
+ start_editing (text);
+
+ /* So we'll redraw and the
+ * cursor will be shown. */
+ text->show_cursor = FALSE;
+ } else {
+ if (text->im_context) {
+ gtk_im_context_focus_out (text->im_context);
+ disconnect_im_context (text);
+ text->need_im_reset = TRUE;
+ }
+
+ e_text_stop_editing (text);
+ if (text->timeout_id) {
+ g_source_remove (text->timeout_id);
+ text->timeout_id = 0;
+ }
+ if (text->show_cursor) {
+ text->show_cursor = FALSE;
+ text->needs_redraw = 1;
+ gnome_canvas_item_request_update (GNOME_CANVAS_ITEM (text));
+ }
+ }
+ if (text->line_wrap)
+ text->needs_split_into_lines = 1;
+ e_canvas_item_request_reflow (GNOME_CANVAS_ITEM (text));
+ }
+ return_val = 0;
+ break;
+ case GDK_KEY_PRESS:
+
+ /* Handle S-F10 key binding here. */
+
+ if (event->key.keyval == GDK_KEY_F10
+ && (event->key.state & GDK_SHIFT_MASK)
+ && text->handle_popup) {
+
+ /* Simulate a GdkEventButton here, so that we can
+ * call e_text_do_popup directly */
+
+ GdkEvent *button_event;
+
+ button_event = gdk_event_new (GDK_BUTTON_PRESS);
+ button_event->button.time = event->key.time;
+ button_event->button.button = 0;
+ e_text_do_popup (text, button_event, 0);
+ return 1;
+ }
+
+ /* Fall Through */
+
+ case GDK_KEY_RELEASE:
+
+ if (text->editing) {
+ GdkEventKey key;
+ gint ret;
+
+ if (text->im_context &&
+ gtk_im_context_filter_keypress (
+ text->im_context,
+ (GdkEventKey *) event)) {
+ text->need_im_reset = TRUE;
+ return 1;
+ }
+
+ key = event->key;
+ e_tep_event.key.time = key.time;
+ e_tep_event.key.state = key.state;
+ e_tep_event.key.keyval = key.keyval;
+
+ /* This is probably ugly hack, but we
+ * have to handle UTF-8 input somehow. */
+ e_tep_event.key.string = e_utf8_from_gtk_event_key (
+ GTK_WIDGET (item->canvas),
+ key.keyval, key.string);
+ if (e_tep_event.key.string != NULL) {
+ e_tep_event.key.length = strlen (e_tep_event.key.string);
+ } else {
+ e_tep_event.key.length = 0;
+ }
+
+ _get_tep (text);
+ ret = e_text_event_processor_handle_event (text->tep, &e_tep_event);
+
+ if (event->type == GDK_KEY_PRESS)
+ g_signal_emit (
+ text, e_text_signals[E_TEXT_KEYPRESS], 0,
+ e_tep_event.key.keyval, e_tep_event.key.state);
+
+ if (e_tep_event.key.string)
+ g_free ((gpointer) e_tep_event.key.string);
+
+ return ret;
+ }
+ break;
+ case GDK_BUTTON_PRESS: /* Fall Through */
+ case GDK_BUTTON_RELEASE:
+ if ((!text->editing)
+ && text->editable
+ && (event->button.button == 1 ||
+ event->button.button == 2)) {
+ e_canvas_item_grab_focus (item, TRUE);
+ start_editing (text);
+ }
+
+ /* We follow convention and emit popup events on right-clicks. */
+ if (event->type == GDK_BUTTON_PRESS && event->button.button == 3) {
+ if (text->handle_popup) {
+ e_text_do_popup (
+ text, event,
+ get_position_from_xy (
+ text, event->button.x,
+ event->button.y));
+ return 1;
+ }
+ else {
+ break;
+ }
+ }
+
+ /* Create our own double and triple click events,
+ * as gnome-canvas doesn't forward them to us */
+ if (event->type == GDK_BUTTON_PRESS) {
+ if (text->dbl_timeout == 0 &&
+ text->tpl_timeout == 0) {
+ text->dbl_timeout = g_timeout_add (
+ 200, _click, &(text->dbl_timeout));
+ } else {
+ if (text->tpl_timeout == 0) {
+ e_tep_event.type = GDK_2BUTTON_PRESS;
+ text->tpl_timeout = g_timeout_add (
+ 200, _click, &(text->tpl_timeout));
+ } else {
+ e_tep_event.type = GDK_3BUTTON_PRESS;
+ }
+ }
+ }
+
+ if (text->editing) {
+ GdkEventButton button = event->button;
+ e_tep_event.button.time = button.time;
+ e_tep_event.button.state = button.state;
+ e_tep_event.button.button = button.button;
+ e_tep_event.button.position =
+ get_position_from_xy (
+ text, button.x, button.y);
+ e_tep_event.button.device =
+ gdk_event_get_device (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;
+ }
+ break;
+ case GDK_MOTION_NOTIFY:
+ if (text->editing) {
+ GdkEventMotion motion = event->motion;
+ e_tep_event.motion.time = motion.time;
+ e_tep_event.motion.state = motion.state;
+ e_tep_event.motion.position =
+ get_position_from_xy (
+ text, motion.x, motion.y);
+ _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;
+ case GDK_ENTER_NOTIFY:
+ text->pointer_in = TRUE;
+ if (text->editing) {
+ if (text->default_cursor_shown) {
+ gdk_window_set_cursor (window, text->i_cursor);
+ text->default_cursor_shown = FALSE;
+ }
+ }
+ break;
+ case GDK_LEAVE_NOTIFY:
+ text->pointer_in = FALSE;
+ if (text->editing) {
+ if (!text->default_cursor_shown) {
+ gdk_window_set_cursor (
+ window, text->default_cursor);
+ text->default_cursor_shown = TRUE;
+ }
+ }
+ break;
+ default:
+ break;
+ }
+ if (return_val)
+ return return_val;
+ if (GNOME_CANVAS_ITEM_CLASS (e_text_parent_class)->event)
+ return GNOME_CANVAS_ITEM_CLASS (e_text_parent_class)->event (item, event);
+ else
+ return 0;
+}
+
+void
+e_text_copy_clipboard (EText *text)
+{
+ gint selection_start_pos;
+ gint selection_end_pos;
+
+ selection_start_pos = MIN (text->selection_start, text->selection_end);
+ selection_end_pos = MAX (text->selection_start, text->selection_end);
+
+ /* convert sel_start/sel_end to byte indices */
+ selection_start_pos = g_utf8_offset_to_pointer (
+ text->text, selection_start_pos) - text->text;
+ selection_end_pos = g_utf8_offset_to_pointer (
+ text->text, selection_end_pos) - text->text;
+
+ gtk_clipboard_set_text (
+ gtk_widget_get_clipboard (
+ GTK_WIDGET (GNOME_CANVAS_ITEM (text)->canvas),
+ GDK_SELECTION_CLIPBOARD),
+ text->text + selection_start_pos,
+ selection_end_pos - selection_start_pos);
+}
+
+void
+e_text_delete_selection (EText *text)
+{
+ gint sel_start, sel_end;
+
+ sel_start = MIN (text->selection_start, text->selection_end);
+ sel_end = MAX (text->selection_start, text->selection_end);
+
+ if (sel_start != sel_end)
+ e_text_model_delete (text->model, sel_start, sel_end - sel_start);
+ text->need_im_reset = TRUE;
+}
+
+void
+e_text_cut_clipboard (EText *text)
+{
+ e_text_copy_clipboard (text);
+ e_text_delete_selection (text);
+}
+
+void
+e_text_paste_clipboard (EText *text)
+{
+ ETextEventProcessorCommand command;
+
+ command.action = E_TEP_PASTE;
+ command.position = E_TEP_SELECTION;
+ command.string = "";
+ command.value = 0;
+ e_text_command (text->tep, &command, text);
+}
+
+void
+e_text_select_all (EText *text)
+{
+ ETextEventProcessorCommand command;
+
+ command.action = E_TEP_SELECT;
+ command.position = E_TEP_SELECT_ALL;
+ command.string = "";
+ command.value = 0;
+ e_text_command (text->tep, &command, text);
+}
+
+static void
+primary_get_cb (GtkClipboard *clipboard,
+ GtkSelectionData *selection_data,
+ guint info,
+ gpointer data)
+{
+ EText *text = E_TEXT (data);
+ gint sel_start, sel_end;
+
+ sel_start = MIN (text->selection_start, text->selection_end);
+ sel_end = MAX (text->selection_start, text->selection_end);
+
+ /* convert sel_start/sel_end to byte indices */
+ sel_start = g_utf8_offset_to_pointer (text->text, sel_start) - text->text;
+ sel_end = g_utf8_offset_to_pointer (text->text, sel_end) - text->text;
+
+ if (sel_start != sel_end) {
+ gtk_selection_data_set_text (
+ selection_data,
+ text->text + sel_start,
+ sel_end - sel_start);
+ }
+}
+
+static void
+primary_clear_cb (GtkClipboard *clipboard,
+ gpointer data)
+{
+#ifdef notyet
+ /* XXX */
+ gtk_editable_select_region (
+ GTK_EDITABLE (entry), entry->current_pos, entry->current_pos);
+#endif
+}
+
+static void
+e_text_update_primary_selection (EText *text)
+{
+ static const GtkTargetEntry targets[] = {
+ { (gchar *) "UTF8_STRING", 0, 0 },
+ { (gchar *) "UTF-8", 0, 0 },
+ { (gchar *) "STRING", 0, 0 },
+ { (gchar *) "TEXT", 0, 0 },
+ { (gchar *) "COMPOUND_TEXT", 0, 0 }
+ };
+ GtkClipboard *clipboard;
+
+ clipboard = gtk_widget_get_clipboard (
+ GTK_WIDGET (GNOME_CANVAS_ITEM (text)->canvas),
+ GDK_SELECTION_PRIMARY);
+
+ if (text->selection_start != text->selection_end) {
+ if (!gtk_clipboard_set_with_owner (
+ clipboard, targets, G_N_ELEMENTS (targets),
+ primary_get_cb, primary_clear_cb, G_OBJECT (text)))
+ primary_clear_cb (clipboard, text);
+ } else {
+ if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (text))
+ gtk_clipboard_clear (clipboard);
+ }
+}
+
+static void
+paste_received (GtkClipboard *clipboard,
+ const gchar *text,
+ gpointer data)
+{
+ EText *etext = E_TEXT (data);
+
+ if (text && g_utf8_validate (text, strlen (text), NULL)) {
+ if (etext->selection_end != etext->selection_start)
+ e_text_delete_selection (etext);
+
+ e_text_insert (etext, text);
+ }
+
+ g_object_unref (etext);
+}
+
+static void
+e_text_paste (EText *text,
+ GdkAtom selection)
+{
+ g_object_ref (text);
+ gtk_clipboard_request_text (
+ gtk_widget_get_clipboard (
+ GTK_WIDGET (GNOME_CANVAS_ITEM (text)->canvas),
+ selection), paste_received, text);
+}
+
+typedef struct {
+ EText *text;
+ GdkEvent *event;
+ gint position;
+} PopupClosure;
+
+static void
+popup_menu_detach (GtkWidget *attach_widget,
+ GtkMenu *menu)
+{
+}
+
+static void
+popup_menu_placement_cb (GtkMenu *menu,
+ gint *x,
+ gint *y,
+ gboolean *push_in,
+ gpointer user_data)
+{
+ EText *text = E_TEXT (user_data);
+ GnomeCanvasItem *item = &text->item;
+ GnomeCanvas *parent = item->canvas;
+
+ if (parent) {
+ GdkWindow *window;
+
+ window = gtk_widget_get_window (GTK_WIDGET (parent));
+ gdk_window_get_origin (window, x, y);
+ *x += item->x1 + text->width / 2;
+ *y += item->y1 + text->height / 2;
+ }
+
+ return;
+}
+
+static void
+popup_targets_received (GtkClipboard *clipboard,
+ GtkSelectionData *data,
+ gpointer user_data)
+{
+ PopupClosure *closure = user_data;
+ EText *text = closure->text;
+ GdkEvent *event = closure->event;
+ gint position = closure->position;
+ GtkWidget *popup_menu = gtk_menu_new ();
+ GtkWidget *menuitem, *submenu;
+ guint event_button = 0;
+ guint32 event_time;
+
+ gdk_event_get_button (event, &event_button);
+ event_time = gdk_event_get_time (event);
+
+ g_free (closure);
+
+ gtk_menu_attach_to_widget (
+ GTK_MENU (popup_menu),
+ GTK_WIDGET (GNOME_CANVAS_ITEM (text)->canvas),
+ popup_menu_detach);
+
+ /* cut menu item */
+ menuitem = gtk_image_menu_item_new_from_stock (GTK_STOCK_CUT, NULL);
+ gtk_widget_show (menuitem);
+ gtk_menu_shell_append (GTK_MENU_SHELL (popup_menu), menuitem);
+ g_signal_connect_swapped (
+ menuitem, "activate",
+ G_CALLBACK (e_text_cut_clipboard), text);
+ gtk_widget_set_sensitive (
+ menuitem, text->editable &&
+ (text->selection_start != text->selection_end));
+
+ /* copy menu item */
+ menuitem = gtk_image_menu_item_new_from_stock (GTK_STOCK_COPY, NULL);
+ gtk_widget_show (menuitem);
+ gtk_menu_shell_append (GTK_MENU_SHELL (popup_menu), menuitem);
+ g_signal_connect_swapped (
+ menuitem, "activate",
+ G_CALLBACK (e_text_copy_clipboard), text);
+ gtk_widget_set_sensitive (menuitem, text->selection_start != text->selection_end);
+
+ /* paste menu item */
+ menuitem = gtk_image_menu_item_new_from_stock (GTK_STOCK_PASTE, NULL);
+ gtk_widget_show (menuitem);
+ gtk_menu_shell_append (GTK_MENU_SHELL (popup_menu), menuitem);
+ g_signal_connect_swapped (
+ menuitem, "activate",
+ G_CALLBACK (e_text_paste_clipboard), text);
+ gtk_widget_set_sensitive (
+ menuitem, text->editable &&
+ gtk_selection_data_targets_include_text (data));
+
+ menuitem = gtk_menu_item_new_with_label (_("Select All"));
+ gtk_widget_show (menuitem);
+ gtk_menu_shell_append (GTK_MENU_SHELL (popup_menu), menuitem);
+ g_signal_connect_swapped (
+ menuitem, "activate",
+ G_CALLBACK (e_text_select_all), text);
+ gtk_widget_set_sensitive (menuitem, strlen (text->text) > 0);
+
+ menuitem = gtk_separator_menu_item_new ();
+ gtk_widget_show (menuitem);
+ gtk_menu_shell_append (GTK_MENU_SHELL (popup_menu), menuitem);
+
+ if (text->im_context && GTK_IS_IM_MULTICONTEXT (text->im_context)) {
+ menuitem = gtk_menu_item_new_with_label (_("Input Methods"));
+ gtk_widget_show (menuitem);
+ submenu = gtk_menu_new ();
+ gtk_menu_item_set_submenu (GTK_MENU_ITEM (menuitem), submenu);
+
+ gtk_menu_shell_append (GTK_MENU_SHELL (popup_menu), menuitem);
+
+ gtk_im_multicontext_append_menuitems (
+ GTK_IM_MULTICONTEXT (text->im_context),
+ GTK_MENU_SHELL (submenu));
+ }
+
+ g_signal_emit (
+ text,
+ e_text_signals[E_TEXT_POPULATE_POPUP],
+ 0,
+ event,
+ position,
+ popup_menu);
+
+ /* If invoked by S-F10 key binding, button will be 0. */
+ if (event_button == 0) {
+ gtk_menu_popup (
+ GTK_MENU (popup_menu), NULL, NULL,
+ popup_menu_placement_cb, (gpointer) text,
+ event_button, GDK_CURRENT_TIME);
+ } else {
+ gtk_menu_popup (
+ GTK_MENU (popup_menu), NULL, NULL,
+ NULL, NULL,
+ event_button, event_time);
+ }
+
+ g_object_unref (text);
+ gdk_event_free (event);
+}
+
+static void
+e_text_do_popup (EText *text,
+ GdkEvent *button_event,
+ gint position)
+{
+ PopupClosure *closure = g_new (PopupClosure, 1);
+
+ closure->text = g_object_ref (text);
+ closure->event = gdk_event_copy (button_event);
+ closure->position = position;
+
+ gtk_clipboard_request_contents (
+ gtk_widget_get_clipboard (
+ GTK_WIDGET (GNOME_CANVAS_ITEM (text)->canvas),
+ GDK_SELECTION_CLIPBOARD),
+ gdk_atom_intern ("TARGETS", FALSE),
+ popup_targets_received,
+ closure);
+}
+
+static void
+e_text_reset_im_context (EText *text)
+{
+ if (text->need_im_reset && text->im_context) {
+ text->need_im_reset = FALSE;
+ gtk_im_context_reset (text->im_context);
+ }
+}
+
+/* fixme: */
+
+static gint
+next_word (EText *text,
+ gint start)
+{
+ gchar *p = g_utf8_offset_to_pointer (text->text, start);
+ gint length;
+
+ length = g_utf8_strlen (text->text, -1);
+
+ if (start >= length) {
+ return length;
+ } else {
+ p = g_utf8_next_char (p);
+ start++;
+
+ while (p && *p) {
+ gunichar unival = g_utf8_get_char (p);
+ if (g_unichar_isspace (unival)) {
+ return start + 1;
+ }
+ else {
+ p = g_utf8_next_char (p);
+ start++;
+ }
+ }
+ }
+
+ return g_utf8_pointer_to_offset (text->text, p);
+}
+
+static gint
+find_offset_into_line (EText *text,
+ gint offset_into_text,
+ gchar **start_of_line)
+{
+ gchar *p;
+
+ p = g_utf8_offset_to_pointer (text->text, offset_into_text);
+
+ if (p == text->text) {
+ if (start_of_line)
+ *start_of_line = (gchar *)text->text;
+ return 0;
+ }
+ else {
+ p = g_utf8_find_prev_char (text->text, p);
+
+ while (p && p > text->text) {
+ if (*p == '\n') {
+ if (start_of_line)
+ *start_of_line = p+1;
+ return offset_into_text -
+ g_utf8_pointer_to_offset (
+ text->text, p + 1);
+ }
+ p = g_utf8_find_prev_char (text->text, p);
+ }
+
+ if (start_of_line)
+ *start_of_line = (gchar *)text->text;
+ return offset_into_text;
+ }
+}
+
+/* direction = TRUE (move forward), FALSE (move backward)
+ * Any error shall return length (text->text) or 0 or
+ * text->selection_end (as deemed fit) */
+static gint
+_get_updated_position (EText *text,
+ gboolean direction)
+{
+ PangoLogAttr *log_attrs = NULL;
+ gint n_attrs;
+ gchar *p = NULL;
+ gint new_pos = 0;
+ gint length = 0;
+
+ /* Basic sanity test, return whatever position we are currently at. */
+ g_return_val_if_fail (text->layout != NULL, text->selection_end);
+
+ length = g_utf8_strlen (text->text, -1);
+
+ /* length checks to make sure we are not wandering
+ * off into nonexistant memory... */
+ if ((text->selection_end >= length) && (TRUE == direction)) /* forward */
+ return length;
+ /* checking for -ve value wont hurt! */
+ if ((text->selection_end <= 0) && (FALSE == direction)) /* backward */
+ return 0;
+
+ /* check for validness of full text->text */
+ if (!g_utf8_validate (text->text, -1, NULL))
+ return text->selection_end;
+
+ /* get layout's PangoLogAttr to facilitate moving when
+ * moving across grapheme cluster as in indic langs */
+ pango_layout_get_log_attrs (text->layout, &log_attrs, &n_attrs);
+
+ /* Fetch the current gchar index in the line & keep moving
+ * forward until we can display cursor */
+ p = g_utf8_offset_to_pointer (text->text, text->selection_end);
+
+ new_pos = text->selection_end;
+ while (1)
+ {
+ /* check before moving forward/backwards
+ * if we have more chars to move or not */
+ if (TRUE == direction)
+ p = g_utf8_next_char (p);
+ else
+ p = g_utf8_prev_char (p);
+
+ /* validate the new string & return with original position if check fails */
+ if (!g_utf8_validate (p, -1, NULL))
+ break; /* will return old value of new_pos */
+
+ new_pos = g_utf8_pointer_to_offset (text->text, p);
+
+ /* if is_cursor_position is set, cursor can appear in front of character.
+ * i.e. this is a grapheme boundary AND make some sanity checks */
+ if ((new_pos >=0) && (new_pos < n_attrs) &&
+ (log_attrs[new_pos].is_cursor_position))
+ break;
+ else if ((new_pos < 0) || (new_pos >= n_attrs))
+ {
+ new_pos = text->selection_end;
+ break;
+ }
+ }
+
+ if (log_attrs)
+ g_free (log_attrs);
+
+ return new_pos;
+}
+
+static gint
+_get_position (EText *text,
+ ETextEventProcessorCommand *command)
+{
+ gint length, obj_num;
+ gunichar unival;
+ gchar *p = NULL;
+ gint new_pos = 0;
+
+ switch (command->position) {
+
+ case E_TEP_VALUE:
+ new_pos = command->value;
+ break;
+
+ case E_TEP_SELECTION:
+ new_pos = text->selection_end;
+ break;
+
+ case E_TEP_START_OF_BUFFER:
+ new_pos = 0;
+ break;
+
+ case E_TEP_END_OF_BUFFER:
+ new_pos = strlen (text->text);
+ break;
+
+ case E_TEP_START_OF_LINE:
+
+ if (text->selection_end >= 1) {
+
+ p = g_utf8_offset_to_pointer (text->text, text->selection_end);
+ if (p != text->text) {
+ p = g_utf8_find_prev_char (text->text, p);
+ while (p && p > text->text) {
+ if (*p == '\n') {
+ new_pos = g_utf8_pointer_to_offset (text->text, p) + 1;
+ break;
+ }
+ p = g_utf8_find_prev_char (text->text, p);
+ }
+ }
+ }
+
+ break;
+
+ case E_TEP_END_OF_LINE:
+ new_pos = -1;
+ length = g_utf8_strlen (text->text, -1);
+
+ if (text->selection_end >= length) {
+ new_pos = length;
+ } else {
+
+ p = g_utf8_offset_to_pointer (text->text, text->selection_end);
+
+ while (p && *p) {
+ if (*p == '\n') {
+ new_pos = g_utf8_pointer_to_offset (text->text, p);
+ p = NULL;
+ } else
+ p = g_utf8_next_char (p);
+ }
+ }
+
+ if (new_pos == -1)
+ new_pos = g_utf8_pointer_to_offset (text->text, p);
+
+ break;
+
+ case E_TEP_FORWARD_CHARACTER:
+ length = g_utf8_strlen (text->text, -1);
+
+ if (text->selection_end >= length)
+ new_pos = length;
+ else
+ /* get updated position to display cursor */
+ new_pos = _get_updated_position (text, TRUE);
+
+ break;
+
+ case E_TEP_BACKWARD_CHARACTER:
+ new_pos = 0;
+ if (text->selection_end >= 1)
+ /* get updated position to display cursor */
+ new_pos = _get_updated_position (text, FALSE);
+
+ break;
+
+ case E_TEP_FORWARD_WORD:
+ new_pos = next_word (text, text->selection_end);
+ break;
+
+ case E_TEP_BACKWARD_WORD:
+ new_pos = 0;
+ if (text->selection_end >= 1) {
+ gint pos = text->selection_end;
+
+ p = g_utf8_find_prev_char (
+ text->text, g_utf8_offset_to_pointer (
+ text->text, text->selection_end));
+ pos--;
+
+ if (p != text->text) {
+ p = g_utf8_find_prev_char (text->text, p);
+ pos--;
+
+ while (p && p > text->text) {
+ unival = g_utf8_get_char (p);
+ if (g_unichar_isspace (unival)) {
+ new_pos = pos + 1;
+ p = NULL;
+ }
+ else {
+ p = g_utf8_find_prev_char (text->text, p);
+ pos--;
+ }
+ }
+ }
+ }
+
+ break;
+
+ case E_TEP_FORWARD_LINE: {
+ gint offset_into_line;
+
+ offset_into_line = find_offset_into_line (text, text->selection_end, NULL);
+ if (offset_into_line == -1)
+ return text->selection_end;
+
+ /* now we search forward til we hit a \n, and then
+ * offset_into_line more characters */
+ p = g_utf8_offset_to_pointer (text->text, text->selection_end);
+ while (p && *p) {
+ if (*p == '\n')
+ break;
+ p = g_utf8_next_char (p);
+ }
+ if (p && *p == '\n') {
+ /* now we loop forward offset_into_line
+ * characters, or until we hit \n or \0 */
+
+ p = g_utf8_next_char (p);
+ while (offset_into_line > 0 && p && *p != '\n' && *p != '\0') {
+ p = g_utf8_next_char (p);
+ offset_into_line--;
+ }
+ }
+
+ /* at this point, p points to the new location,
+ * convert it to an offset and we're done */
+ new_pos = g_utf8_pointer_to_offset (text->text, p);
+ break;
+ }
+ case E_TEP_BACKWARD_LINE: {
+ gint offset_into_line;
+
+ offset_into_line = find_offset_into_line (
+ text, text->selection_end, &p);
+
+ if (offset_into_line == -1)
+ return text->selection_end;
+
+ /* p points to the first character on our line. if we
+ * have a \n before it, skip it and scan til we hit
+ * the next one */
+ if (p != text->text) {
+ p = g_utf8_find_prev_char (text->text, p);
+ if (*p == '\n') {
+ p = g_utf8_find_prev_char (text->text, p);
+ while (p > text->text) {
+ if (*p == '\n') {
+ p++;
+ break;
+ }
+ p = g_utf8_find_prev_char (text->text, p);
+ }
+ }
+ }
+
+ /* at this point 'p' points to the start of the
+ * previous line, move forward 'offset_into_line'
+ * times. */
+
+ while (offset_into_line > 0 && p && *p != '\n' && *p != '\0') {
+ p = g_utf8_next_char (p);
+ offset_into_line--;
+ }
+
+ /* at this point, p points to the new location,
+ * convert it to an offset and we're done */
+ new_pos = g_utf8_pointer_to_offset (text->text, p);
+ break;
+ }
+ case E_TEP_SELECT_WORD:
+ /* This is a silly hack to cause double-clicking on an object
+ * to activate that object.
+ * (Normally, double click == select word, which is why this is here.) */
+
+ obj_num = e_text_model_get_object_at_offset (
+ text->model, text->selection_start);
+ if (obj_num != -1) {
+ e_text_model_activate_nth_object (text->model, obj_num);
+ new_pos = text->selection_start;
+ break;
+ }
+
+ if (text->selection_end < 1) {
+ new_pos = 0;
+ break;
+ }
+
+ p = g_utf8_offset_to_pointer (text->text, text->selection_end);
+
+ p = g_utf8_find_prev_char (text->text, p);
+
+ while (p && p > text->text) {
+ unival = g_utf8_get_char (p);
+ if (g_unichar_isspace (unival)) {
+ p = g_utf8_next_char (p);
+ break;
+ }
+ p = g_utf8_find_prev_char (text->text, p);
+ }
+
+ if (!p)
+ text->selection_start = 0;
+ else
+ text->selection_start = g_utf8_pointer_to_offset (text->text, p);
+
+ text->selection_start =
+ e_text_model_validate_position (
+ text->model, text->selection_start);
+
+ length = g_utf8_strlen (text->text, -1);
+ if (text->selection_end >= length) {
+ new_pos = length;
+ break;
+ }
+
+ p = g_utf8_offset_to_pointer (text->text, text->selection_end);
+ while (p && *p) {
+ unival = g_utf8_get_char (p);
+ if (g_unichar_isspace (unival)) {
+ new_pos = g_utf8_pointer_to_offset (text->text, p);
+ break;
+ } else
+ p = g_utf8_next_char (p);
+ }
+
+ if (!new_pos)
+ new_pos = g_utf8_strlen (text->text, -1);
+
+ return new_pos;
+
+ case E_TEP_SELECT_ALL:
+ text->selection_start = 0;
+ new_pos = g_utf8_strlen (text->text, -1);
+ break;
+
+ case E_TEP_FORWARD_PARAGRAPH:
+ case E_TEP_BACKWARD_PARAGRAPH:
+
+ case E_TEP_FORWARD_PAGE:
+ case E_TEP_BACKWARD_PAGE:
+ new_pos = text->selection_end;
+ break;
+
+ default:
+ new_pos = text->selection_end;
+ break;
+ }
+
+ new_pos = e_text_model_validate_position (text->model, new_pos);
+
+ return new_pos;
+}
+
+static void
+e_text_insert (EText *text,
+ const gchar *string)
+{
+ gint len = strlen (string);
+
+ if (len > 0) {
+ gint utf8len = 0;
+
+ if (!text->allow_newlines) {
+ const gchar *i;
+ gchar *new_string = g_malloc (len + 1);
+ gchar *j = new_string;
+
+ for (i = string; *i; i = g_utf8_next_char (i)) {
+ if (*i != '\n') {
+ gunichar c;
+ gint charlen;
+
+ c = g_utf8_get_char (i);
+ charlen = g_unichar_to_utf8 (c, j);
+ j += charlen;
+ utf8len++;
+ }
+ }
+ *j = 0;
+ e_text_model_insert_length (
+ text->model, text->selection_start,
+ new_string, utf8len);
+ g_free (new_string);
+ }
+ else {
+ utf8len = g_utf8_strlen (string, -1);
+ e_text_model_insert_length (
+ text->model, text->selection_start,
+ string, utf8len);
+ }
+ }
+}
+
+static void
+capitalize (EText *text,
+ gint start,
+ gint end,
+ ETextEventProcessorCaps type)
+{
+ gboolean first = TRUE;
+ const gchar *p = g_utf8_offset_to_pointer (text->text, start);
+ const gchar *text_end = g_utf8_offset_to_pointer (text->text, end);
+ gint utf8len = text_end - p;
+
+ if (utf8len > 0) {
+ gchar *new_text = g_new0 (char, utf8len * 6);
+ gchar *output = new_text;
+
+ while (p && *p && p < text_end) {
+ gunichar unival = g_utf8_get_char (p);
+ gunichar newval = unival;
+
+ switch (type) {
+ case E_TEP_CAPS_UPPER:
+ newval = g_unichar_toupper (unival);
+ break;
+ case E_TEP_CAPS_LOWER:
+ newval = g_unichar_tolower (unival);
+ break;
+ case E_TEP_CAPS_TITLE:
+ if (g_unichar_isalpha (unival)) {
+ if (first)
+ newval = g_unichar_totitle (unival);
+ else
+ newval = g_unichar_tolower (unival);
+ first = FALSE;
+ } else {
+ first = TRUE;
+ }
+ break;
+ }
+ g_unichar_to_utf8 (newval, output);
+ output = g_utf8_next_char (output);
+
+ p = g_utf8_next_char (p);
+ }
+ *output = 0;
+
+ e_text_model_delete (text->model, start, utf8len);
+ e_text_model_insert_length (text->model, start, new_text, utf8len);
+ g_free (new_text);
+ }
+}
+
+static void
+e_text_command (ETextEventProcessor *tep,
+ ETextEventProcessorCommand *command,
+ gpointer data)
+{
+ EText *text = E_TEXT (data);
+ gboolean scroll = TRUE;
+ gboolean use_start = TRUE;
+
+ switch (command->action) {
+ case E_TEP_MOVE:
+ text->selection_start = _get_position (text, command);
+ text->selection_end = text->selection_start;
+ if (text->timer) {
+ g_timer_reset (text->timer);
+ }
+
+ text->need_im_reset = TRUE;
+ use_start = TRUE;
+ break;
+ case E_TEP_SELECT:
+ text->selection_start =
+ e_text_model_validate_position (
+ text->model, text->selection_start); /* paranoia */
+ text->selection_end = _get_position (text, command);
+
+ e_text_update_primary_selection (text);
+
+ text->need_im_reset = TRUE;
+ use_start = FALSE;
+
+ break;
+ case E_TEP_DELETE:
+ if (text->selection_end == text->selection_start) {
+ text->selection_end = _get_position (text, command);
+ }
+ e_text_delete_selection (text);
+ if (text->timer) {
+ g_timer_reset (text->timer);
+ }
+
+ text->need_im_reset = TRUE;
+ use_start = FALSE;
+
+ break;
+
+ case E_TEP_INSERT:
+ if (g_utf8_validate (command->string, command->value, NULL)) {
+ if (text->selection_end != text->selection_start) {
+ e_text_delete_selection (text);
+ }
+ e_text_insert (text, command->string);
+ if (text->timer) {
+ g_timer_reset (text->timer);
+ }
+ text->need_im_reset = TRUE;
+ }
+ break;
+ case E_TEP_COPY:
+ e_text_copy_clipboard (text);
+
+ if (text->timer) {
+ g_timer_reset (text->timer);
+ }
+ scroll = FALSE;
+ break;
+ case E_TEP_PASTE:
+ e_text_paste (text, GDK_NONE);
+ if (text->timer) {
+ g_timer_reset (text->timer);
+ }
+ text->need_im_reset = TRUE;
+ break;
+ case E_TEP_GET_SELECTION:
+ e_text_paste (text, GDK_SELECTION_PRIMARY);
+ break;
+ case E_TEP_ACTIVATE:
+ g_signal_emit (text, e_text_signals[E_TEXT_ACTIVATE], 0);
+ if (text->timer) {
+ g_timer_reset (text->timer);
+ }
+ break;
+ case E_TEP_SET_SELECT_BY_WORD:
+ text->select_by_word = command->value;
+ break;
+ case E_TEP_GRAB:
+ e_canvas_item_grab (
+ E_CANVAS (GNOME_CANVAS_ITEM (text)->canvas),
+ GNOME_CANVAS_ITEM (text),
+ GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK,
+ text->i_cursor,
+ command->device,
+ command->time,
+ NULL,
+ NULL);
+ scroll = FALSE;
+ break;
+ case E_TEP_UNGRAB:
+ e_canvas_item_ungrab (
+ E_CANVAS (GNOME_CANVAS_ITEM (text)->canvas),
+ GNOME_CANVAS_ITEM (text),
+ command->time);
+ scroll = FALSE;
+ break;
+ case E_TEP_CAPS:
+ if (text->selection_start == text->selection_end) {
+ capitalize (
+ text, text->selection_start,
+ next_word (text, text->selection_start),
+ command->value);
+ } else {
+ gint selection_start = MIN (
+ text->selection_start, text->selection_end);
+ gint selection_end = MAX (
+ text->selection_start, text->selection_end);
+ capitalize (
+ text, selection_start,
+ selection_end, command->value);
+ }
+ break;
+ case E_TEP_NOP:
+ scroll = FALSE;
+ break;
+ }
+
+ e_text_reset_im_context (text);
+
+ /* it's possible to get here without ever having been realized
+ * by our canvas (if the e-text started completely obscured.)
+ * so let's create our layout object if we don't already have
+ * one. */
+ if (!text->layout)
+ create_layout (text);
+
+ /* We move cursor only if scroll is TRUE */
+ if (scroll && !text->button_down) {
+ /* XXX do we really need the @trailing logic here? if
+ * we don't we can scrap the loop and just use
+ * pango_layout_index_to_pos */
+ PangoLayoutLine *cur_line = NULL;
+ gint selection_index;
+ PangoLayoutIter *iter = pango_layout_get_iter (text->layout);
+
+ /* check if we are using selection_start or selection_end for moving? */
+ selection_index = use_start ? text->selection_start : text->selection_end;
+
+ /* convert to a byte index */
+ selection_index = g_utf8_offset_to_pointer (
+ text->text, selection_index) - text->text;
+
+ do {
+ PangoLayoutLine *line = pango_layout_iter_get_line (iter);
+
+ if (selection_index >= line->start_index &&
+ selection_index <= line->start_index + line->length) {
+ /* found the line with the start of the selection */
+ cur_line = line;
+ break;
+ }
+
+ } while (pango_layout_iter_next_line (iter));
+
+ if (cur_line) {
+ gint xpos, ypos;
+ gdouble clip_width, clip_height;
+ /* gboolean trailing = FALSE; */
+ PangoRectangle pango_pos;
+
+ if (selection_index > 0 && selection_index ==
+ cur_line->start_index + cur_line->length) {
+ selection_index--;
+ /* trailing = TRUE; */
+ }
+
+ pango_layout_index_to_pos (text->layout, selection_index, &pango_pos);
+
+ pango_pos.x = PANGO_PIXELS (pango_pos.x);
+ pango_pos.y = PANGO_PIXELS (pango_pos.y);
+ pango_pos.width = (pango_pos.width + PANGO_SCALE / 2) / PANGO_SCALE;
+ pango_pos.height = (pango_pos.height + PANGO_SCALE / 2) / PANGO_SCALE;
+
+ /* scroll for X */
+ xpos = pango_pos.x; /* + (trailing ? 0 : pango_pos.width);*/
+
+ if (xpos + 2 < text->xofs_edit) {
+ text->xofs_edit = xpos;
+ }
+
+ clip_width = text->clip_width;
+
+ if (xpos + pango_pos.width - clip_width > text->xofs_edit) {
+ text->xofs_edit = xpos + pango_pos.width - clip_width;
+ }
+
+ /* scroll for Y */
+ if (pango_pos.y + 2 < text->yofs_edit) {
+ ypos = pango_pos.y;
+ text->yofs_edit = ypos;
+ }
+ else {
+ ypos = pango_pos.y + pango_pos.height;
+ }
+
+ if (text->clip_height < 0)
+ clip_height = text->height;
+ else
+ clip_height = text->clip_height;
+
+ if (ypos - clip_height > text->yofs_edit) {
+ text->yofs_edit = ypos - clip_height;
+ }
+
+ }
+
+ pango_layout_iter_free (iter);
+ }
+
+ text->needs_redraw = 1;
+ gnome_canvas_item_request_update (GNOME_CANVAS_ITEM (text));
+}
+
+/* Class initialization function for the text item */
+static void
+e_text_class_init (ETextClass *class)
+{
+ GObjectClass *gobject_class;
+ GnomeCanvasItemClass *item_class;
+
+ gobject_class = (GObjectClass *) class;
+ item_class = (GnomeCanvasItemClass *) class;
+
+ gobject_class->dispose = e_text_dispose;
+ gobject_class->set_property = e_text_set_property;
+ gobject_class->get_property = e_text_get_property;
+
+ item_class->update = e_text_update;
+ item_class->realize = e_text_realize;
+ item_class->unrealize = e_text_unrealize;
+ item_class->draw = e_text_draw;
+ item_class->point = e_text_point;
+ item_class->bounds = e_text_bounds;
+ item_class->event = e_text_event;
+
+ class->changed = NULL;
+ class->activate = NULL;
+
+ e_text_signals[E_TEXT_CHANGED] = g_signal_new (
+ "changed",
+ G_OBJECT_CLASS_TYPE (gobject_class),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (ETextClass, changed),
+ NULL, NULL,
+ g_cclosure_marshal_VOID__VOID,
+ G_TYPE_NONE, 0);
+
+ e_text_signals[E_TEXT_ACTIVATE] = g_signal_new (
+ "activate",
+ G_OBJECT_CLASS_TYPE (gobject_class),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (ETextClass, activate),
+ NULL, NULL,
+ g_cclosure_marshal_VOID__VOID,
+ G_TYPE_NONE, 0);
+
+ e_text_signals[E_TEXT_KEYPRESS] = g_signal_new (
+ "keypress",
+ G_OBJECT_CLASS_TYPE (gobject_class),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (ETextClass, keypress),
+ NULL, NULL,
+ e_marshal_NONE__INT_INT,
+ G_TYPE_NONE, 2,
+ G_TYPE_UINT,
+ G_TYPE_UINT);
+
+ e_text_signals[E_TEXT_POPULATE_POPUP] = g_signal_new (
+ "populate_popup",
+ G_OBJECT_CLASS_TYPE (gobject_class),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (ETextClass, populate_popup),
+ NULL, NULL,
+ e_marshal_NONE__POINTER_INT_OBJECT,
+ G_TYPE_NONE, 3,
+ G_TYPE_POINTER,
+ G_TYPE_INT,
+ GTK_TYPE_MENU);
+
+ g_object_class_install_property (
+ gobject_class,
+ PROP_MODEL,
+ g_param_spec_object (
+ "model",
+ "Model",
+ "Model",
+ E_TYPE_TEXT_MODEL,
+ G_PARAM_READWRITE));
+
+ g_object_class_install_property (
+ gobject_class,
+ PROP_EVENT_PROCESSOR,
+ g_param_spec_object (
+ "event_processor",
+ "Event Processor",
+ "Event Processor",
+ E_TEXT_EVENT_PROCESSOR_TYPE,
+ G_PARAM_READWRITE));
+
+ g_object_class_install_property (
+ gobject_class,
+ PROP_TEXT,
+ g_param_spec_string (
+ "text",
+ "Text",
+ "Text",
+ NULL,
+ G_PARAM_READWRITE));
+
+ g_object_class_install_property (
+ gobject_class,
+ PROP_BOLD,
+ g_param_spec_boolean (
+ "bold",
+ "Bold",
+ "Bold",
+ FALSE,
+ G_PARAM_READWRITE));
+
+ g_object_class_install_property (
+ gobject_class,
+ PROP_STRIKEOUT,
+ g_param_spec_boolean (
+ "strikeout",
+ "Strikeout",
+ "Strikeout",
+ FALSE,
+ G_PARAM_READWRITE));
+
+ g_object_class_install_property (
+ gobject_class,
+ PROP_JUSTIFICATION,
+ g_param_spec_enum (
+ "justification",
+ "Justification",
+ "Justification",
+ GTK_TYPE_JUSTIFICATION,
+ GTK_JUSTIFY_LEFT,
+ G_PARAM_READWRITE));
+
+ g_object_class_install_property (
+ gobject_class,
+ PROP_CLIP_WIDTH,
+ g_param_spec_double (
+ "clip_width",
+ "Clip Width",
+ "Clip Width",
+ 0.0, G_MAXDOUBLE, 0.0,
+ G_PARAM_READWRITE));
+
+ g_object_class_install_property (
+ gobject_class,
+ PROP_CLIP_HEIGHT,
+ g_param_spec_double (
+ "clip_height",
+ "Clip Height",
+ "Clip Height",
+ 0.0, G_MAXDOUBLE, 0.0,
+ G_PARAM_READWRITE));
+
+ g_object_class_install_property (
+ gobject_class,
+ PROP_CLIP,
+ g_param_spec_boolean (
+ "clip",
+ "Clip",
+ "Clip",
+ FALSE,
+ G_PARAM_READWRITE));
+
+ g_object_class_install_property (
+ gobject_class,
+ PROP_FILL_CLIP_RECTANGLE,
+ g_param_spec_boolean (
+ "fill_clip_rectangle",
+ "Fill clip rectangle",
+ "Fill clip rectangle",
+ FALSE,
+ G_PARAM_READWRITE));
+
+ g_object_class_install_property (
+ gobject_class,
+ PROP_X_OFFSET,
+ g_param_spec_double (
+ "x_offset",
+ "X Offset",
+ "X Offset",
+ 0.0, G_MAXDOUBLE, 0.0,
+ G_PARAM_READWRITE));
+
+ g_object_class_install_property (
+ gobject_class,
+ PROP_Y_OFFSET,
+ g_param_spec_double (
+ "y_offset",
+ "Y Offset",
+ "Y Offset",
+ 0.0, G_MAXDOUBLE, 0.0,
+ G_PARAM_READWRITE));
+
+ g_object_class_install_property (
+ gobject_class,
+ PROP_FILL_COLOR,
+ g_param_spec_string (
+ "fill_color",
+ "Fill color",
+ "Fill color",
+ NULL,
+ G_PARAM_WRITABLE));
+
+ g_object_class_install_property (
+ gobject_class,
+ PROP_FILL_COLOR_GDK,
+ g_param_spec_boxed (
+ "fill_color_gdk",
+ "GDK fill color",
+ "GDK fill color",
+ GDK_TYPE_COLOR,
+ G_PARAM_WRITABLE));
+
+ g_object_class_install_property (
+ gobject_class,
+ PROP_FILL_COLOR_RGBA,
+ g_param_spec_uint (
+ "fill_color_rgba",
+ "GDK fill color",
+ "GDK fill color",
+ 0, G_MAXUINT, 0,
+ G_PARAM_READWRITE));
+
+ g_object_class_install_property (
+ gobject_class,
+ PROP_TEXT_WIDTH,
+ g_param_spec_double (
+ "text_width",
+ "Text width",
+ "Text width",
+ 0.0, G_MAXDOUBLE, 0.0,
+ G_PARAM_READABLE));
+
+ g_object_class_install_property (
+ gobject_class,
+ PROP_TEXT_HEIGHT,
+ g_param_spec_double (
+ "text_height",
+ "Text height",
+ "Text height",
+ 0.0, G_MAXDOUBLE, 0.0,
+ G_PARAM_READABLE));
+
+ g_object_class_install_property (
+ gobject_class,
+ PROP_EDITABLE,
+ g_param_spec_boolean (
+ "editable",
+ "Editable",
+ "Editable",
+ FALSE,
+ G_PARAM_READWRITE));
+
+ g_object_class_install_property (
+ gobject_class,
+ PROP_USE_ELLIPSIS,
+ g_param_spec_boolean (
+ "use_ellipsis",
+ "Use ellipsis",
+ "Use ellipsis",
+ FALSE,
+ G_PARAM_READWRITE));
+
+ g_object_class_install_property (
+ gobject_class,
+ PROP_ELLIPSIS,
+ g_param_spec_string (
+ "ellipsis",
+ "Ellipsis",
+ "Ellipsis",
+ NULL,
+ G_PARAM_READWRITE));
+
+ g_object_class_install_property (
+ gobject_class,
+ PROP_LINE_WRAP,
+ g_param_spec_boolean (
+ "line_wrap",
+ "Line wrap",
+ "Line wrap",
+ FALSE,
+ G_PARAM_READWRITE));
+
+ g_object_class_install_property (
+ gobject_class,
+ PROP_BREAK_CHARACTERS,
+ g_param_spec_string (
+ "break_characters",
+ "Break characters",
+ "Break characters",
+ NULL,
+ G_PARAM_READWRITE));
+
+ g_object_class_install_property (
+ gobject_class, PROP_MAX_LINES,
+ g_param_spec_int (
+ "max_lines",
+ "Max lines",
+ "Max lines",
+ 0, G_MAXINT, 0,
+ G_PARAM_READWRITE));
+
+ g_object_class_install_property (
+ gobject_class,
+ PROP_WIDTH,
+ g_param_spec_double (
+ "width",
+ "Width",
+ "Width",
+ 0.0, G_MAXDOUBLE, 0.0,
+ G_PARAM_READWRITE));
+
+ g_object_class_install_property (
+ gobject_class,
+ PROP_HEIGHT,
+ g_param_spec_double (
+ "height",
+ "Height",
+ "Height",
+ 0.0, G_MAXDOUBLE, 0.0,
+ G_PARAM_READWRITE));
+
+ g_object_class_install_property (
+ gobject_class,
+ PROP_ALLOW_NEWLINES,
+ g_param_spec_boolean (
+ "allow_newlines",
+ "Allow newlines",
+ "Allow newlines",
+ FALSE,
+ G_PARAM_READWRITE));
+
+ g_object_class_install_property (
+ gobject_class,
+ PROP_CURSOR_POS,
+ g_param_spec_int (
+ "cursor_pos",
+ "Cursor position",
+ "Cursor position",
+ 0, G_MAXINT, 0,
+ G_PARAM_READWRITE));
+
+ g_object_class_install_property (
+ gobject_class,
+ PROP_IM_CONTEXT,
+ g_param_spec_object (
+ "im_context",
+ "IM Context",
+ "IM Context",
+ GTK_TYPE_IM_CONTEXT,
+ G_PARAM_READWRITE));
+
+ g_object_class_install_property (
+ gobject_class,
+ PROP_HANDLE_POPUP,
+ g_param_spec_boolean (
+ "handle_popup",
+ "Handle Popup",
+ "Handle Popup",
+ FALSE,
+ G_PARAM_READWRITE));
+
+ if (!clipboard_atom)
+ clipboard_atom = gdk_atom_intern ("CLIPBOARD", FALSE);
+
+ gal_a11y_e_text_init ();
+}
+
+/* Object initialization function for the text item */
+static void
+e_text_init (EText *text)
+{
+ text->model = e_text_model_new ();
+ text->text = e_text_model_get_text (text->model);
+ text->preedit_len = 0;
+ text->preedit_pos = 0;
+ text->layout = NULL;
+
+ text->revert = NULL;
+
+ text->model_changed_signal_id = g_signal_connect (
+ text->model, "changed",
+ G_CALLBACK (e_text_text_model_changed), text);
+
+ text->model_repos_signal_id = g_signal_connect (
+ text->model, "reposition",
+ G_CALLBACK (e_text_text_model_reposition), text);
+
+ text->justification = GTK_JUSTIFY_LEFT;
+ text->clip_width = -1.0;
+ text->clip_height = -1.0;
+ text->xofs = 0.0;
+ text->yofs = 0.0;
+
+ text->ellipsis = NULL;
+ text->use_ellipsis = FALSE;
+ text->ellipsis_width = 0;
+
+ text->editable = FALSE;
+ text->editing = FALSE;
+ text->xofs_edit = 0;
+ text->yofs_edit = 0;
+
+ 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;
+ text->tep_command_id = 0;
+
+ text->pointer_in = FALSE;
+ text->default_cursor_shown = TRUE;
+ text->line_wrap = FALSE;
+ text->break_characters = NULL;
+ text->max_lines = -1;
+ text->dbl_timeout = 0;
+ text->tpl_timeout = 0;
+
+ text->bold = FALSE;
+ text->strikeout = FALSE;
+
+ text->allow_newlines = TRUE;
+
+ text->last_type_request = -1;
+ text->last_time_request = 0;
+ text->queued_requests = NULL;
+
+ text->im_context = NULL;
+ text->need_im_reset = FALSE;
+ text->im_context_signals_registered = FALSE;
+
+ text->handle_popup = FALSE;
+ text->rgba_set = FALSE;
+
+ e_canvas_item_set_reflow_callback (GNOME_CANVAS_ITEM (text), e_text_reflow);
+}
+
+/* IM Context Callbacks */
+static void
+e_text_commit_cb (GtkIMContext *context,
+ const gchar *str,
+ EText *text)
+{
+ if (g_utf8_validate (str, strlen (str), NULL)) {
+ if (text->selection_end != text->selection_start)
+ e_text_delete_selection (text);
+ e_text_insert (text, str);
+ g_signal_emit (text, e_text_signals[E_TEXT_KEYPRESS], 0, 0, 0);
+ }
+}
+
+static void
+e_text_preedit_changed_cb (GtkIMContext *context,
+ EText *etext)
+{
+ gchar *preedit_string = NULL;
+ gint cursor_pos;
+
+ gtk_im_context_get_preedit_string (
+ context, &preedit_string,
+ NULL, &cursor_pos);
+
+ cursor_pos = CLAMP (cursor_pos, 0, g_utf8_strlen (preedit_string, -1));
+ etext->preedit_len = strlen (preedit_string);
+ etext->preedit_pos = g_utf8_offset_to_pointer (
+ preedit_string, cursor_pos) - preedit_string;
+ g_free (preedit_string);
+
+ g_signal_emit (etext, e_text_signals[E_TEXT_KEYPRESS], 0, 0, 0);
+}
+
+static gboolean
+e_text_retrieve_surrounding_cb (GtkIMContext *context,
+ EText *text)
+{
+ gtk_im_context_set_surrounding (
+ context, text->text, strlen (text->text),
+ g_utf8_offset_to_pointer (text->text, MIN (
+ text->selection_start, text->selection_end)) - text->text);
+
+ return TRUE;
+}
+
+static gboolean
+e_text_delete_surrounding_cb (GtkIMContext *context,
+ gint offset,
+ gint n_chars,
+ EText *text)
+{
+ e_text_model_delete (
+ text->model,
+ MIN (text->selection_start, text->selection_end) + offset,
+ n_chars);
+
+ return TRUE;
+}