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eel-editable-label.c
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4295 lines (3525 loc) · 124 KB
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/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include <config.h>
#include <math.h>
#include <string.h>
#include "eel-editable-label.h"
#include "eel-accessibility.h"
#include <libgail-util/gailmisc.h>
#include <glib/gi18n-lib.h>
#include <pango/pango.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
enum {
MOVE_CURSOR,
POPULATE_POPUP,
DELETE_FROM_CURSOR,
CUT_CLIPBOARD,
COPY_CLIPBOARD,
PASTE_CLIPBOARD,
TOGGLE_OVERWRITE,
LAST_SIGNAL
};
enum {
PROP_0,
PROP_TEXT,
PROP_JUSTIFY,
PROP_WRAP,
PROP_CURSOR_POSITION,
PROP_SELECTION_BOUND
};
static guint signals[LAST_SIGNAL] = { 0 };
static void eel_editable_label_editable_init (GtkEditableInterface *iface);
static void eel_editable_label_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void eel_editable_label_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void eel_editable_label_finalize (GObject *object);
static void eel_editable_label_get_preferred_width (GtkWidget *widget,
gint *minimum,
gint *natural);
static void eel_editable_label_get_preferred_height (GtkWidget *widget,
gint *minimum,
gint *natural);
static void eel_editable_label_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void eel_editable_label_state_changed (GtkWidget *widget,
GtkStateType state);
static void eel_editable_label_style_updated (GtkWidget *widget);
static void eel_editable_label_direction_changed (GtkWidget *widget,
GtkTextDirection previous_dir);
static gint eel_editable_label_draw (GtkWidget *widget,
cairo_t *cr);
static void eel_editable_label_realize (GtkWidget *widget);
static void eel_editable_label_unrealize (GtkWidget *widget);
static void eel_editable_label_map (GtkWidget *widget);
static void eel_editable_label_unmap (GtkWidget *widget);
static gint eel_editable_label_button_press (GtkWidget *widget,
GdkEventButton *event);
static gint eel_editable_label_button_release (GtkWidget *widget,
GdkEventButton *event);
static gint eel_editable_label_motion (GtkWidget *widget,
GdkEventMotion *event);
static gint eel_editable_label_key_press (GtkWidget *widget,
GdkEventKey *event);
static gint eel_editable_label_key_release (GtkWidget *widget,
GdkEventKey *event);
static gint eel_editable_label_focus_in (GtkWidget *widget,
GdkEventFocus *event);
static gint eel_editable_label_focus_out (GtkWidget *widget,
GdkEventFocus *event);
static AtkObject *eel_editable_label_get_accessible (GtkWidget *widget);
static void eel_editable_label_commit_cb (GtkIMContext *context,
const gchar *str,
EelEditableLabel *label);
static void eel_editable_label_preedit_changed_cb (GtkIMContext *context,
EelEditableLabel *label);
static gboolean eel_editable_label_retrieve_surrounding_cb (GtkIMContext *context,
EelEditableLabel *label);
static gboolean eel_editable_label_delete_surrounding_cb (GtkIMContext *slave,
gint offset,
gint n_chars,
EelEditableLabel *label);
static void eel_editable_label_clear_layout (EelEditableLabel *label);
static void eel_editable_label_recompute (EelEditableLabel *label);
static void eel_editable_label_ensure_layout (EelEditableLabel *label,
gboolean include_preedit);
static void eel_editable_label_select_region_index (EelEditableLabel *label,
gint anchor_index,
gint end_index);
static gboolean eel_editable_label_focus (GtkWidget *widget,
GtkDirectionType direction);
static void eel_editable_label_move_cursor (EelEditableLabel *label,
GtkMovementStep step,
gint count,
gboolean extend_selection);
static void eel_editable_label_delete_from_cursor (EelEditableLabel *label,
GtkDeleteType type,
gint count);
static void eel_editable_label_copy_clipboard (EelEditableLabel *label);
static void eel_editable_label_cut_clipboard (EelEditableLabel *label);
static void eel_editable_label_paste (EelEditableLabel *label,
GdkAtom selection);
static void eel_editable_label_paste_clipboard (EelEditableLabel *label);
static void eel_editable_label_select_all (EelEditableLabel *label);
static void eel_editable_label_do_popup (EelEditableLabel *label,
GdkEventButton *event);
static void eel_editable_label_toggle_overwrite (EelEditableLabel *label);
static gint eel_editable_label_move_forward_word (EelEditableLabel *label,
gint start);
static gint eel_editable_label_move_backward_word (EelEditableLabel *label,
gint start);
static void eel_editable_label_reset_im_context (EelEditableLabel *label);
static void eel_editable_label_check_cursor_blink (EelEditableLabel *label);
static void eel_editable_label_pend_cursor_blink (EelEditableLabel *label);
/* Editable implementation: */
static void editable_insert_text_emit (GtkEditable *editable,
const gchar *new_text,
gint new_text_length,
gint *position);
static void editable_delete_text_emit (GtkEditable *editable,
gint start_pos,
gint end_pos);
static void editable_insert_text (GtkEditable *editable,
const gchar *new_text,
gint new_text_length,
gint *position);
static void editable_delete_text (GtkEditable *editable,
gint start_pos,
gint end_pos);
static gchar * editable_get_chars (GtkEditable *editable,
gint start_pos,
gint end_pos);
static void editable_set_selection_bounds (GtkEditable *editable,
gint start,
gint end);
static gboolean editable_get_selection_bounds (GtkEditable *editable,
gint *start,
gint *end);
static void editable_real_set_position (GtkEditable *editable,
gint position);
static gint editable_get_position (GtkEditable *editable);
G_DEFINE_TYPE_WITH_CODE (EelEditableLabel, eel_editable_label, GTK_TYPE_MISC,
G_IMPLEMENT_INTERFACE (GTK_TYPE_EDITABLE, eel_editable_label_editable_init));
static void
eel_editable_label_queue_resize (GtkWidget *label)
{
if (gtk_widget_get_realized (label)) {
gtk_widget_queue_resize (label);
}
}
static void
add_move_binding (GtkBindingSet *binding_set,
guint keyval,
guint modmask,
GtkMovementStep step,
gint count)
{
g_assert ((modmask & GDK_SHIFT_MASK) == 0);
gtk_binding_entry_add_signal (binding_set, keyval, modmask,
"move_cursor", 3,
G_TYPE_ENUM, step,
G_TYPE_INT, count,
G_TYPE_BOOLEAN, FALSE);
/* Selection-extending version */
gtk_binding_entry_add_signal (binding_set, keyval, modmask | GDK_SHIFT_MASK,
"move_cursor", 3,
G_TYPE_ENUM, step,
G_TYPE_INT, count,
G_TYPE_BOOLEAN, TRUE);
}
static void
eel_editable_label_class_init (EelEditableLabelClass *class)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (class);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
GtkBindingSet *binding_set;
gobject_class->set_property = eel_editable_label_set_property;
gobject_class->get_property = eel_editable_label_get_property;
gobject_class->finalize = eel_editable_label_finalize;
widget_class->get_preferred_width = eel_editable_label_get_preferred_width;
widget_class->get_preferred_height = eel_editable_label_get_preferred_height;
widget_class->size_allocate = eel_editable_label_size_allocate;
widget_class->state_changed = eel_editable_label_state_changed;
widget_class->style_updated = eel_editable_label_style_updated;
widget_class->direction_changed = eel_editable_label_direction_changed;
widget_class->draw = eel_editable_label_draw;
widget_class->realize = eel_editable_label_realize;
widget_class->unrealize = eel_editable_label_unrealize;
widget_class->map = eel_editable_label_map;
widget_class->unmap = eel_editable_label_unmap;
widget_class->button_press_event = eel_editable_label_button_press;
widget_class->button_release_event = eel_editable_label_button_release;
widget_class->motion_notify_event = eel_editable_label_motion;
widget_class->focus = eel_editable_label_focus;
widget_class->key_press_event = eel_editable_label_key_press;
widget_class->key_release_event = eel_editable_label_key_release;
widget_class->focus_in_event = eel_editable_label_focus_in;
widget_class->focus_out_event = eel_editable_label_focus_out;
widget_class->get_accessible = eel_editable_label_get_accessible;
class->move_cursor = eel_editable_label_move_cursor;
class->delete_from_cursor = eel_editable_label_delete_from_cursor;
class->copy_clipboard = eel_editable_label_copy_clipboard;
class->cut_clipboard = eel_editable_label_cut_clipboard;
class->paste_clipboard = eel_editable_label_paste_clipboard;
class->toggle_overwrite = eel_editable_label_toggle_overwrite;
signals[MOVE_CURSOR] =
g_signal_new ("move_cursor",
G_TYPE_FROM_CLASS (class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (EelEditableLabelClass, move_cursor),
NULL, NULL,
g_cclosure_marshal_generic,
G_TYPE_NONE, 3, GTK_TYPE_MOVEMENT_STEP, G_TYPE_INT, G_TYPE_BOOLEAN);
signals[COPY_CLIPBOARD] =
g_signal_new ("copy_clipboard",
G_TYPE_FROM_CLASS (class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (EelEditableLabelClass, copy_clipboard),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
signals[POPULATE_POPUP] =
g_signal_new ("populate_popup",
G_TYPE_FROM_CLASS (class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (EelEditableLabelClass, populate_popup),
NULL, NULL,
g_cclosure_marshal_VOID__OBJECT,
G_TYPE_NONE, 1, GTK_TYPE_MENU);
signals[DELETE_FROM_CURSOR] =
g_signal_new ("delete_from_cursor",
G_TYPE_FROM_CLASS (class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (EelEditableLabelClass, delete_from_cursor),
NULL, NULL,
g_cclosure_marshal_generic,
G_TYPE_NONE, 2, GTK_TYPE_DELETE_TYPE, G_TYPE_INT);
signals[CUT_CLIPBOARD] =
g_signal_new ("cut_clipboard",
G_TYPE_FROM_CLASS (class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (EelEditableLabelClass, cut_clipboard),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
signals[PASTE_CLIPBOARD] =
g_signal_new ("paste_clipboard",
G_TYPE_FROM_CLASS (class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (EelEditableLabelClass, paste_clipboard),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
signals[TOGGLE_OVERWRITE] =
g_signal_new ("toggle_overwrite",
G_TYPE_FROM_CLASS (class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (EelEditableLabelClass, toggle_overwrite),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
g_object_class_install_property (gobject_class,
PROP_TEXT,
g_param_spec_string ("text",
_("Text"),
_("The text of the label."),
NULL,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_JUSTIFY,
g_param_spec_enum ("justify",
_("Justification"),
_("The alignment of the lines in the text of the label relative to each other. This does NOT affect the alignment of the label within its allocation. See GtkMisc::xalign for that."),
GTK_TYPE_JUSTIFICATION,
GTK_JUSTIFY_LEFT,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_WRAP,
g_param_spec_boolean ("wrap",
_("Line wrap"),
_("If set, wrap lines if the text becomes too wide."),
FALSE,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_CURSOR_POSITION,
g_param_spec_int ("cursor_position",
_("Cursor Position"),
_("The current position of the insertion cursor in chars."),
0,
G_MAXINT,
0,
G_PARAM_READABLE));
g_object_class_install_property (gobject_class,
PROP_SELECTION_BOUND,
g_param_spec_int ("selection_bound",
_("Selection Bound"),
_("The position of the opposite end of the selection from the cursor in chars."),
0,
G_MAXINT,
0,
G_PARAM_READABLE));
/*
* Key bindings
*/
binding_set = gtk_binding_set_by_class (class);
/* Moving the insertion point */
add_move_binding (binding_set, GDK_KEY_Right, 0,
GTK_MOVEMENT_VISUAL_POSITIONS, 1);
add_move_binding (binding_set, GDK_KEY_Left, 0,
GTK_MOVEMENT_VISUAL_POSITIONS, -1);
add_move_binding (binding_set, GDK_KEY_KP_Right, 0,
GTK_MOVEMENT_VISUAL_POSITIONS, 1);
add_move_binding (binding_set, GDK_KEY_KP_Left, 0,
GTK_MOVEMENT_VISUAL_POSITIONS, -1);
add_move_binding (binding_set, GDK_KEY_f, GDK_CONTROL_MASK,
GTK_MOVEMENT_LOGICAL_POSITIONS, 1);
add_move_binding (binding_set, GDK_KEY_b, GDK_CONTROL_MASK,
GTK_MOVEMENT_LOGICAL_POSITIONS, -1);
add_move_binding (binding_set, GDK_KEY_Right, GDK_CONTROL_MASK,
GTK_MOVEMENT_WORDS, 1);
add_move_binding (binding_set, GDK_KEY_Left, GDK_CONTROL_MASK,
GTK_MOVEMENT_WORDS, -1);
add_move_binding (binding_set, GDK_KEY_KP_Right, GDK_CONTROL_MASK,
GTK_MOVEMENT_WORDS, 1);
add_move_binding (binding_set, GDK_KEY_KP_Left, GDK_CONTROL_MASK,
GTK_MOVEMENT_WORDS, -1);
add_move_binding (binding_set, GDK_KEY_a, GDK_CONTROL_MASK,
GTK_MOVEMENT_PARAGRAPH_ENDS, -1);
add_move_binding (binding_set, GDK_KEY_e, GDK_CONTROL_MASK,
GTK_MOVEMENT_PARAGRAPH_ENDS, 1);
add_move_binding (binding_set, GDK_KEY_f, GDK_MOD1_MASK,
GTK_MOVEMENT_WORDS, 1);
add_move_binding (binding_set, GDK_KEY_b, GDK_MOD1_MASK,
GTK_MOVEMENT_WORDS, -1);
add_move_binding (binding_set, GDK_KEY_Home, 0,
GTK_MOVEMENT_DISPLAY_LINE_ENDS, -1);
add_move_binding (binding_set, GDK_KEY_End, 0,
GTK_MOVEMENT_DISPLAY_LINE_ENDS, 1);
add_move_binding (binding_set, GDK_KEY_KP_Home, 0,
GTK_MOVEMENT_DISPLAY_LINE_ENDS, -1);
add_move_binding (binding_set, GDK_KEY_KP_End, 0,
GTK_MOVEMENT_DISPLAY_LINE_ENDS, 1);
add_move_binding (binding_set, GDK_KEY_Home, GDK_CONTROL_MASK,
GTK_MOVEMENT_BUFFER_ENDS, -1);
add_move_binding (binding_set, GDK_KEY_End, GDK_CONTROL_MASK,
GTK_MOVEMENT_BUFFER_ENDS, 1);
add_move_binding (binding_set, GDK_KEY_KP_Home, GDK_CONTROL_MASK,
GTK_MOVEMENT_BUFFER_ENDS, -1);
add_move_binding (binding_set, GDK_KEY_KP_End, GDK_CONTROL_MASK,
GTK_MOVEMENT_BUFFER_ENDS, 1);
add_move_binding (binding_set, GDK_KEY_Up, 0,
GTK_MOVEMENT_DISPLAY_LINES, -1);
add_move_binding (binding_set, GDK_KEY_KP_Up, 0,
GTK_MOVEMENT_DISPLAY_LINES, -1);
add_move_binding (binding_set, GDK_KEY_Down, 0,
GTK_MOVEMENT_DISPLAY_LINES, 1);
add_move_binding (binding_set, GDK_KEY_KP_Down, 0,
GTK_MOVEMENT_DISPLAY_LINES, 1);
/* Select all
*/
gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK,
"move_cursor", 3,
GTK_TYPE_MOVEMENT_STEP, GTK_MOVEMENT_BUFFER_ENDS,
G_TYPE_INT, -1,
G_TYPE_BOOLEAN, FALSE);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK,
"move_cursor", 3,
GTK_TYPE_MOVEMENT_STEP, GTK_MOVEMENT_BUFFER_ENDS,
G_TYPE_INT, 1,
G_TYPE_BOOLEAN, TRUE);
/* Deleting text */
gtk_binding_entry_add_signal (binding_set, GDK_KEY_Delete, 0,
"delete_from_cursor", 2,
G_TYPE_ENUM, GTK_DELETE_CHARS,
G_TYPE_INT, 1);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Delete, 0,
"delete_from_cursor", 2,
G_TYPE_ENUM, GTK_DELETE_CHARS,
G_TYPE_INT, 1);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, 0,
"delete_from_cursor", 2,
G_TYPE_ENUM, GTK_DELETE_CHARS,
G_TYPE_INT, -1);
/* Make this do the same as Backspace, to help with mis-typing */
gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, GDK_SHIFT_MASK,
"delete_from_cursor", 2,
G_TYPE_ENUM, GTK_DELETE_CHARS,
G_TYPE_INT, -1);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_Delete, GDK_CONTROL_MASK,
"delete_from_cursor", 2,
G_TYPE_ENUM, GTK_DELETE_WORD_ENDS,
G_TYPE_INT, 1);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Delete, GDK_CONTROL_MASK,
"delete_from_cursor", 2,
G_TYPE_ENUM, GTK_DELETE_WORD_ENDS,
G_TYPE_INT, 1);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, GDK_CONTROL_MASK,
"delete_from_cursor", 2,
G_TYPE_ENUM, GTK_DELETE_WORD_ENDS,
G_TYPE_INT, -1);
/* Cut/copy/paste */
gtk_binding_entry_add_signal (binding_set, GDK_KEY_x, GDK_CONTROL_MASK,
"cut_clipboard", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_c, GDK_CONTROL_MASK,
"copy_clipboard", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_v, GDK_CONTROL_MASK,
"paste_clipboard", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_Delete, GDK_SHIFT_MASK,
"cut_clipboard", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_Insert, GDK_CONTROL_MASK,
"copy_clipboard", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_Insert, GDK_SHIFT_MASK,
"paste_clipboard", 0);
/* Overwrite */
gtk_binding_entry_add_signal (binding_set, GDK_KEY_Insert, 0,
"toggle_overwrite", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Insert, 0,
"toggle_overwrite", 0);
}
static void
eel_editable_label_editable_init (GtkEditableInterface *iface)
{
iface->do_insert_text = editable_insert_text_emit;
iface->do_delete_text = editable_delete_text_emit;
iface->insert_text = editable_insert_text;
iface->delete_text = editable_delete_text;
iface->get_chars = editable_get_chars;
iface->set_selection_bounds = editable_set_selection_bounds;
iface->get_selection_bounds = editable_get_selection_bounds;
iface->set_position = editable_real_set_position;
iface->get_position = editable_get_position;
}
static void
eel_editable_label_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
EelEditableLabel *label;
label = EEL_EDITABLE_LABEL (object);
switch (prop_id)
{
case PROP_TEXT:
eel_editable_label_set_text (label, g_value_get_string (value));
break;
case PROP_JUSTIFY:
eel_editable_label_set_justify (label, g_value_get_enum (value));
break;
case PROP_WRAP:
eel_editable_label_set_line_wrap (label, g_value_get_boolean (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
eel_editable_label_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
EelEditableLabel *label;
gint offset;
label = EEL_EDITABLE_LABEL (object);
switch (prop_id)
{
case PROP_TEXT:
g_value_set_string (value, label->text);
break;
case PROP_JUSTIFY:
g_value_set_enum (value, label->jtype);
break;
case PROP_WRAP:
g_value_set_boolean (value, label->wrap);
break;
case PROP_CURSOR_POSITION:
offset = g_utf8_pointer_to_offset (label->text,
label->text + label->selection_end);
g_value_set_int (value, offset);
break;
case PROP_SELECTION_BOUND:
offset = g_utf8_pointer_to_offset (label->text,
label->text + label->selection_anchor);
g_value_set_int (value, offset);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
eel_editable_label_init (EelEditableLabel *label)
{
label->jtype = GTK_JUSTIFY_LEFT;
label->wrap = FALSE;
label->wrap_mode = PANGO_WRAP_WORD;
label->layout = NULL;
label->text_size = 1;
label->text = g_malloc (label->text_size);
label->text[0] = '\0';
label->n_bytes = 0;
gtk_widget_set_can_focus (GTK_WIDGET (label), TRUE);
gtk_style_context_add_class (gtk_widget_get_style_context (GTK_WIDGET (label)),
GTK_STYLE_CLASS_ENTRY);
/* This object is completely private. No external entity can gain a reference
* to it; so we create it here and destroy it in finalize().
*/
label->im_context = gtk_im_multicontext_new ();
g_signal_connect (G_OBJECT (label->im_context), "commit",
G_CALLBACK (eel_editable_label_commit_cb), label);
g_signal_connect (G_OBJECT (label->im_context), "preedit_changed",
G_CALLBACK (eel_editable_label_preedit_changed_cb), label);
g_signal_connect (G_OBJECT (label->im_context), "retrieve_surrounding",
G_CALLBACK (eel_editable_label_retrieve_surrounding_cb), label);
g_signal_connect (G_OBJECT (label->im_context), "delete_surrounding",
G_CALLBACK (eel_editable_label_delete_surrounding_cb), label);
}
/**
* eel_editable_label_new:
* @str: The text of the label
*
* Creates a new label with the given text inside it. You can
* pass %NULL to get an empty label widget.
*
* Return value: the new #EelEditableLabel
**/
GtkWidget*
eel_editable_label_new (const gchar *str)
{
EelEditableLabel *label;
label = g_object_new (EEL_TYPE_EDITABLE_LABEL, NULL);
if (str && *str)
eel_editable_label_set_text (label, str);
return GTK_WIDGET (label);
}
/**
* eel_editable_label_set_text:
* @label: a #EelEditableLabel
* @str: The text you want to set.
*
* Sets the text within the #EelEditableLabel widget. It overwrites any text that
* was there before.
*
* This will also clear any previously set mnemonic accelerators.
**/
void
eel_editable_label_set_text (EelEditableLabel *label,
const gchar *str)
{
GtkEditable *editable;
int tmp_pos;
g_return_if_fail (EEL_IS_EDITABLE_LABEL (label));
g_return_if_fail (str != NULL);
if (strcmp (label->text, str) == 0)
return;
editable = GTK_EDITABLE (label);
gtk_editable_delete_text (editable, 0, -1);
tmp_pos = 0;
gtk_editable_insert_text (editable, str, strlen (str), &tmp_pos);
}
/**
* eel_editable_label_get_text:
* @label: a #EelEditableLabel
*
* Fetches the text from a label widget, as displayed on the
* screen. This does not include any embedded underlines
* indicating mnemonics or Pango markup. (See eel_editable_label_get_label())
*
* Return value: the text in the label widget. This is the internal
* string used by the label, and must not be modified.
**/
const gchar *
eel_editable_label_get_text (EelEditableLabel *label)
{
g_return_val_if_fail (EEL_IS_EDITABLE_LABEL (label), NULL);
return label->text;
}
/**
* eel_editable_label_set_justify:
* @label: a #EelEditableLabel
* @jtype: a #GtkJustification
*
* Sets the alignment of the lines in the text of the label relative to
* each other. %GTK_JUSTIFY_LEFT is the default value when the
* widget is first created with eel_editable_label_new(). If you instead want
* to set the alignment of the label as a whole, use
* gtk_misc_set_alignment() instead. eel_editable_label_set_justify() has no
* effect on labels containing only a single line.
**/
void
eel_editable_label_set_justify (EelEditableLabel *label,
GtkJustification jtype)
{
g_return_if_fail (EEL_IS_EDITABLE_LABEL (label));
g_return_if_fail (jtype >= GTK_JUSTIFY_LEFT && jtype <= GTK_JUSTIFY_FILL);
if ((GtkJustification) label->jtype != jtype)
{
label->jtype = jtype;
/* No real need to be this drastic, but easier than duplicating the code */
eel_editable_label_recompute (label);
g_object_notify (G_OBJECT (label), "justify");
eel_editable_label_queue_resize (GTK_WIDGET (label));
}
}
/**
* eel_editable_label_get_justify:
* @label: a #EelEditableLabel
*
* Returns the justification of the label. See eel_editable_label_set_justify ().
*
* Return value: #GtkJustification
**/
GtkJustification
eel_editable_label_get_justify (EelEditableLabel *label)
{
g_return_val_if_fail (EEL_IS_EDITABLE_LABEL (label), 0);
return label->jtype;
}
void
eel_editable_label_set_draw_outline (EelEditableLabel *label,
gboolean draw_outline)
{
draw_outline = draw_outline != FALSE;
if (label->draw_outline != draw_outline)
{
label->draw_outline = draw_outline;
gtk_widget_queue_draw (GTK_WIDGET (label));
}
}
/**
* eel_editable_label_set_line_wrap:
* @label: a #EelEditableLabel
* @wrap: the setting
*
* Toggles line wrapping within the #EelEditableLabel widget. %TRUE makes it break
* lines if text exceeds the widget's size. %FALSE lets the text get cut off
* by the edge of the widget if it exceeds the widget size.
**/
void
eel_editable_label_set_line_wrap (EelEditableLabel *label,
gboolean wrap)
{
g_return_if_fail (EEL_IS_EDITABLE_LABEL (label));
wrap = wrap != FALSE;
if (label->wrap != wrap)
{
label->wrap = wrap;
g_object_notify (G_OBJECT (label), "wrap");
eel_editable_label_queue_resize (GTK_WIDGET (label));
}
}
void
eel_editable_label_set_line_wrap_mode (EelEditableLabel *label,
PangoWrapMode mode)
{
g_return_if_fail (EEL_IS_EDITABLE_LABEL (label));
if (label->wrap_mode != mode)
{
label->wrap_mode = mode;
eel_editable_label_queue_resize (GTK_WIDGET (label));
}
}
/**
* eel_editable_label_get_line_wrap:
* @label: a #EelEditableLabel
*
* Returns whether lines in the label are automatically wrapped. See eel_editable_label_set_line_wrap ().
*
* Return value: %TRUE if the lines of the label are automatically wrapped.
*/
gboolean
eel_editable_label_get_line_wrap (EelEditableLabel *label)
{
g_return_val_if_fail (EEL_IS_EDITABLE_LABEL (label), FALSE);
return label->wrap;
}
PangoFontDescription *
eel_editable_label_get_font_description (EelEditableLabel *label)
{
if (label->font_desc)
return pango_font_description_copy (label->font_desc);
return NULL;
}
void
eel_editable_label_set_font_description (EelEditableLabel *label,
const PangoFontDescription *desc)
{
if (label->font_desc)
pango_font_description_free (label->font_desc);
if (desc)
label->font_desc = pango_font_description_copy (desc);
else
label->font_desc = NULL;
eel_editable_label_clear_layout (label);
}
static void
eel_editable_label_finalize (GObject *object)
{
EelEditableLabel *label;
g_assert (EEL_IS_EDITABLE_LABEL (object));
label = EEL_EDITABLE_LABEL (object);
if (label->font_desc)
{
pango_font_description_free (label->font_desc);
label->font_desc = NULL;
}
g_object_unref (G_OBJECT (label->im_context));
label->im_context = NULL;
g_free (label->text);
label->text = NULL;
if (label->layout)
{
g_object_unref (G_OBJECT (label->layout));
label->layout = NULL;
}
G_OBJECT_CLASS (eel_editable_label_parent_class)->finalize (object);
}
static void
eel_editable_label_clear_layout (EelEditableLabel *label)
{
if (label->layout)
{
g_object_unref (G_OBJECT (label->layout));
label->layout = NULL;
}
}
static void
eel_editable_label_recompute (EelEditableLabel *label)
{
eel_editable_label_clear_layout (label);
eel_editable_label_check_cursor_blink (label);
}
typedef struct _LabelWrapWidth LabelWrapWidth;
struct _LabelWrapWidth
{
gint width;
PangoFontDescription *font_desc;
};
static void
label_wrap_width_free (gpointer data)
{
LabelWrapWidth *wrap_width = data;
pango_font_description_free (wrap_width->font_desc);
g_free (wrap_width);
}
static gint
get_label_wrap_width (EelEditableLabel *label)
{
PangoLayout *layout;
GtkStyleContext *style = gtk_widget_get_style_context (GTK_WIDGET (label));
PangoFontDescription *desc;
LabelWrapWidth *wrap_width = g_object_get_data (G_OBJECT (style), "gtk-label-wrap-width");
if (!wrap_width)
{
wrap_width = g_new0 (LabelWrapWidth, 1);
g_object_set_data_full (G_OBJECT (style), "gtk-label-wrap-width",
wrap_width, label_wrap_width_free);
}
gtk_style_context_get (style, gtk_widget_get_state_flags (GTK_WIDGET (label)),
GTK_STYLE_PROPERTY_FONT, &desc,
NULL);
if (wrap_width->font_desc && pango_font_description_equal (wrap_width->font_desc, desc))
goto out;
if (wrap_width->font_desc)
pango_font_description_free (wrap_width->font_desc);
wrap_width->font_desc = pango_font_description_copy (desc);
layout = gtk_widget_create_pango_layout (GTK_WIDGET (label),
"This long string gives a good enough length for any line to have.");
pango_layout_get_size (layout, &wrap_width->width, NULL);
g_object_unref (layout);
out:
pango_font_description_free (desc);
return wrap_width->width;
}
static void
eel_editable_label_ensure_layout (EelEditableLabel *label,
gboolean include_preedit)
{
GtkWidget *widget;
PangoRectangle logical_rect;
/* Normalize for comparisons */
include_preedit = include_preedit != 0;
if (label->preedit_length > 0 &&
include_preedit != label->layout_includes_preedit)
eel_editable_label_clear_layout (label);
widget = GTK_WIDGET (label);
if (label->layout == NULL)
{
gchar *preedit_string = NULL;
gint preedit_length = 0;
PangoAttrList *preedit_attrs = NULL;
PangoAlignment align = PANGO_ALIGN_LEFT; /* Quiet gcc */
PangoAttrList *tmp_attrs = pango_attr_list_new ();
if (include_preedit)
{
gtk_im_context_get_preedit_string (label->im_context,
&preedit_string, &preedit_attrs, NULL);
preedit_length = label->preedit_length;
}
if (preedit_length)
{
GString *tmp_string = g_string_new (NULL);
g_string_prepend_len (tmp_string, label->text, label->n_bytes);
g_string_insert (tmp_string, label->selection_anchor, preedit_string);
label->layout = gtk_widget_create_pango_layout (widget, tmp_string->str);
pango_attr_list_splice (tmp_attrs, preedit_attrs,
label->selection_anchor, preedit_length);
g_string_free (tmp_string, TRUE);
}
else
{
label->layout = gtk_widget_create_pango_layout (widget, label->text);
}
label->layout_includes_preedit = include_preedit;
if (label->font_desc != NULL)
pango_layout_set_font_description (label->layout, label->font_desc);