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gtk2/gtk/gtkentry.c
Tim Janik afee2c67c5 applied patch from Andreas Persenius <ndap@swipnet.se> that updates the 
Wed Jul 26 12:59:31 2000  Tim Janik  <timj@gtk.org>

        * *.[hc]: applied patch from Andreas Persenius <ndap@swipnet.se> that
        updates the license headers to the GNU Lesser General Public License,
        as well as updating the copyright year to 2000.
2000-07-26 11:33:08 +00:00

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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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, 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 <ctype.h>
#include <string.h>
#include "gdk/gdkkeysyms.h"
#include "gdk/gdki18n.h"
#include "gtkentry.h"
#include "gtkimmulticontext.h"
#include "gtkmain.h"
#include "gtkselection.h"
#include "gtksignal.h"
#include "gtkstyle.h"
#include <pango/pango.h>
#include <glib-object.h>
#define MIN_ENTRY_WIDTH 150
#define DRAW_TIMEOUT 20
#define INNER_BORDER 2
/* Initial size of buffer, in bytes */
#define MIN_SIZE 16
/* Maximum size of text buffer, in bytes */
#define MAX_SIZE G_MAXUSHORT
enum {
ARG_0,
ARG_MAX_LENGTH,
ARG_VISIBILITY
};
static void gtk_entry_class_init (GtkEntryClass *klass);
static void gtk_entry_init (GtkEntry *entry);
static void gtk_entry_set_arg (GtkObject *object,
GtkArg *arg,
guint arg_id);
static void gtk_entry_get_arg (GtkObject *object,
GtkArg *arg,
guint arg_id);
static void gtk_entry_finalize (GObject *object);
static void gtk_entry_realize (GtkWidget *widget);
static void gtk_entry_unrealize (GtkWidget *widget);
static void gtk_entry_draw_focus (GtkWidget *widget);
static void gtk_entry_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_entry_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_entry_draw (GtkWidget *widget,
GdkRectangle *area);
static gint gtk_entry_expose (GtkWidget *widget,
GdkEventExpose *event);
static gint gtk_entry_button_press (GtkWidget *widget,
GdkEventButton *event);
static gint gtk_entry_button_release (GtkWidget *widget,
GdkEventButton *event);
static gint gtk_entry_motion_notify (GtkWidget *widget,
GdkEventMotion *event);
static gint gtk_entry_key_press (GtkWidget *widget,
GdkEventKey *event);
static gint gtk_entry_focus_in (GtkWidget *widget,
GdkEventFocus *event);
static gint gtk_entry_focus_out (GtkWidget *widget,
GdkEventFocus *event);
static void gtk_entry_draw_text (GtkEntry *entry);
static void gtk_entry_ensure_layout (GtkEntry *entry);
static void gtk_entry_draw_cursor (GtkEntry *entry);
static void gtk_entry_style_set (GtkWidget *widget,
GtkStyle *previous_style);
static void gtk_entry_direction_changed (GtkWidget *widget,
GtkTextDirection previous_dir);
static void gtk_entry_state_changed (GtkWidget *widget,
GtkStateType previous_state);
static void gtk_entry_queue_draw (GtkEntry *entry);
static gint gtk_entry_find_position (GtkEntry *entry,
gint x);
static void gtk_entry_get_cursor_locations (GtkEntry *entry,
gint *strong_x,
gint *weak_x);
static void entry_adjust_scroll (GtkEntry *entry);
static void gtk_entry_insert_text (GtkEditable *editable,
const gchar *new_text,
gint new_text_length,
gint *position);
static void gtk_entry_delete_text (GtkEditable *editable,
gint start_pos,
gint end_pos);
static void gtk_entry_update_text (GtkEditable *editable,
gint start_pos,
gint end_pos);
static gchar *gtk_entry_get_chars (GtkEditable *editable,
gint start_pos,
gint end_pos);
/* Binding actions */
static void gtk_entry_move_cursor (GtkEditable *editable,
gint x,
gint y);
static void gtk_entry_move_word (GtkEditable *editable,
gint n);
static void gtk_entry_move_to_column (GtkEditable *editable,
gint row);
static void gtk_entry_kill_char (GtkEditable *editable,
gint direction);
static void gtk_entry_kill_word (GtkEditable *editable,
gint direction);
static void gtk_entry_kill_line (GtkEditable *editable,
gint direction);
/* To be removed */
static void gtk_move_forward_character (GtkEntry *entry);
static void gtk_move_backward_character (GtkEntry *entry);
static void gtk_move_forward_word (GtkEntry *entry);
static void gtk_move_backward_word (GtkEntry *entry);
static void gtk_move_beginning_of_line (GtkEntry *entry);
static void gtk_move_end_of_line (GtkEntry *entry);
static void gtk_delete_forward_character (GtkEntry *entry);
static void gtk_delete_backward_character (GtkEntry *entry);
static void gtk_delete_forward_word (GtkEntry *entry);
static void gtk_delete_backward_word (GtkEntry *entry);
static void gtk_delete_line (GtkEntry *entry);
static void gtk_delete_to_line_end (GtkEntry *entry);
static void gtk_select_word (GtkEntry *entry,
guint32 time);
static void gtk_select_line (GtkEntry *entry,
guint32 time);
static void gtk_entry_set_selection (GtkEditable *editable,
gint start,
gint end);
static void gtk_entry_set_position_from_editable (GtkEditable *editable,
gint position);
static void gtk_entry_commit_cb (GtkIMContext *context,
const gchar *str,
GtkEntry *entry);
static GtkWidgetClass *parent_class = NULL;
static GdkAtom ctext_atom = GDK_NONE;
static const GtkTextFunction control_keys[26] =
{
(GtkTextFunction)gtk_move_beginning_of_line, /* a */
(GtkTextFunction)gtk_move_backward_character, /* b */
(GtkTextFunction)gtk_editable_copy_clipboard, /* c */
(GtkTextFunction)gtk_delete_forward_character, /* d */
(GtkTextFunction)gtk_move_end_of_line, /* e */
(GtkTextFunction)gtk_move_forward_character, /* f */
NULL, /* g */
(GtkTextFunction)gtk_delete_backward_character, /* h */
NULL, /* i */
NULL, /* j */
(GtkTextFunction)gtk_delete_to_line_end, /* k */
NULL, /* l */
NULL, /* m */
NULL, /* n */
NULL, /* o */
NULL, /* p */
NULL, /* q */
NULL, /* r */
NULL, /* s */
NULL, /* t */
(GtkTextFunction)gtk_delete_line, /* u */
(GtkTextFunction)gtk_editable_paste_clipboard, /* v */
(GtkTextFunction)gtk_delete_backward_word, /* w */
(GtkTextFunction)gtk_editable_cut_clipboard, /* x */
NULL, /* y */
NULL, /* z */
};
static const GtkTextFunction alt_keys[26] =
{
NULL, /* a */
(GtkTextFunction)gtk_move_backward_word, /* b */
NULL, /* c */
(GtkTextFunction)gtk_delete_forward_word, /* d */
NULL, /* e */
(GtkTextFunction)gtk_move_forward_word, /* f */
NULL, /* g */
NULL, /* h */
NULL, /* i */
NULL, /* j */
NULL, /* k */
NULL, /* l */
NULL, /* m */
NULL, /* n */
NULL, /* o */
NULL, /* p */
NULL, /* q */
NULL, /* r */
NULL, /* s */
NULL, /* t */
NULL, /* u */
NULL, /* v */
NULL, /* w */
NULL, /* x */
NULL, /* y */
NULL, /* z */
};
GtkType
gtk_entry_get_type (void)
{
static GtkType entry_type = 0;
if (!entry_type)
{
static const GtkTypeInfo entry_info =
{
"GtkEntry",
sizeof (GtkEntry),
sizeof (GtkEntryClass),
(GtkClassInitFunc) gtk_entry_class_init,
(GtkObjectInitFunc) gtk_entry_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL,
};
entry_type = gtk_type_unique (GTK_TYPE_EDITABLE, &entry_info);
}
return entry_type;
}
static void
gtk_entry_class_init (GtkEntryClass *class)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (class);
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
GtkEditableClass *editable_class;
object_class = (GtkObjectClass*) class;
widget_class = (GtkWidgetClass*) class;
editable_class = (GtkEditableClass*) class;
parent_class = gtk_type_class (GTK_TYPE_EDITABLE);
gobject_class->finalize = gtk_entry_finalize;
gtk_object_add_arg_type ("GtkEntry::max_length", GTK_TYPE_UINT, GTK_ARG_READWRITE, ARG_MAX_LENGTH);
gtk_object_add_arg_type ("GtkEntry::visibility", GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_VISIBILITY);
object_class->set_arg = gtk_entry_set_arg;
object_class->get_arg = gtk_entry_get_arg;
widget_class->realize = gtk_entry_realize;
widget_class->unrealize = gtk_entry_unrealize;
widget_class->draw_focus = gtk_entry_draw_focus;
widget_class->size_request = gtk_entry_size_request;
widget_class->size_allocate = gtk_entry_size_allocate;
widget_class->draw = gtk_entry_draw;
widget_class->expose_event = gtk_entry_expose;
widget_class->button_press_event = gtk_entry_button_press;
widget_class->button_release_event = gtk_entry_button_release;
widget_class->motion_notify_event = gtk_entry_motion_notify;
widget_class->key_press_event = gtk_entry_key_press;
widget_class->focus_in_event = gtk_entry_focus_in;
widget_class->focus_out_event = gtk_entry_focus_out;
widget_class->style_set = gtk_entry_style_set;
widget_class->direction_changed = gtk_entry_direction_changed;
widget_class->state_changed = gtk_entry_state_changed;
editable_class->insert_text = gtk_entry_insert_text;
editable_class->delete_text = gtk_entry_delete_text;
editable_class->changed = (void (*)(GtkEditable *)) entry_adjust_scroll;
editable_class->move_cursor = gtk_entry_move_cursor;
editable_class->move_word = gtk_entry_move_word;
editable_class->move_to_column = gtk_entry_move_to_column;
editable_class->kill_char = gtk_entry_kill_char;
editable_class->kill_word = gtk_entry_kill_word;
editable_class->kill_line = gtk_entry_kill_line;
editable_class->update_text = gtk_entry_update_text;
editable_class->get_chars = gtk_entry_get_chars;
editable_class->set_selection = gtk_entry_set_selection;
editable_class->set_position = gtk_entry_set_position_from_editable;
}
static void
gtk_entry_set_arg (GtkObject *object,
GtkArg *arg,
guint arg_id)
{
GtkEntry *entry;
entry = GTK_ENTRY (object);
switch (arg_id)
{
case ARG_MAX_LENGTH:
gtk_entry_set_max_length (entry, GTK_VALUE_UINT (*arg));
break;
case ARG_VISIBILITY:
gtk_entry_set_visibility (entry, GTK_VALUE_BOOL (*arg));
break;
default:
break;
}
}
static void
gtk_entry_get_arg (GtkObject *object,
GtkArg *arg,
guint arg_id)
{
GtkEntry *entry;
entry = GTK_ENTRY (object);
switch (arg_id)
{
case ARG_MAX_LENGTH:
GTK_VALUE_UINT (*arg) = entry->text_max_length;
break;
case ARG_VISIBILITY:
GTK_VALUE_BOOL (*arg) = GTK_EDITABLE (entry)->visible;
break;
default:
arg->type = GTK_TYPE_INVALID;
break;
}
}
static void
gtk_entry_init (GtkEntry *entry)
{
GTK_WIDGET_SET_FLAGS (entry, GTK_CAN_FOCUS);
entry->text_area = NULL;
entry->text_size = MIN_SIZE;
entry->text = g_malloc (entry->text_size);
entry->text[0] = '\0';
entry->text_length = 0;
entry->text_max_length = 0;
entry->n_bytes = 0;
entry->scroll_offset = 0;
entry->timer = 0;
entry->button = 0;
entry->ascent = 0;
entry->descent = 0;
/* This object is completely private. No external entity can gain a reference
* to it; so we create it here and destroy it in finalize().
*/
entry->im_context = gtk_im_multicontext_new ();
gtk_signal_connect (GTK_OBJECT (entry->im_context), "commit",
GTK_SIGNAL_FUNC (gtk_entry_commit_cb), entry);
}
GtkWidget*
gtk_entry_new (void)
{
return GTK_WIDGET (gtk_type_new (GTK_TYPE_ENTRY));
}
GtkWidget*
gtk_entry_new_with_max_length (guint16 max)
{
GtkEntry *entry;
entry = gtk_type_new (GTK_TYPE_ENTRY);
entry->text_max_length = max;
return GTK_WIDGET (entry);
}
void
gtk_entry_set_text (GtkEntry *entry,
const gchar *text)
{
gint tmp_pos;
GtkEditable *editable;
g_return_if_fail (entry != NULL);
g_return_if_fail (GTK_IS_ENTRY (entry));
g_return_if_fail (text != NULL);
editable = GTK_EDITABLE (entry);
gtk_entry_delete_text (GTK_EDITABLE(entry), 0, entry->text_length);
tmp_pos = 0;
gtk_editable_insert_text (editable, text, strlen (text), &tmp_pos);
editable->current_pos = tmp_pos;
}
void
gtk_entry_append_text (GtkEntry *entry,
const gchar *text)
{
gint tmp_pos;
g_return_if_fail (entry != NULL);
g_return_if_fail (GTK_IS_ENTRY (entry));
g_return_if_fail (text != NULL);
tmp_pos = entry->text_length;
gtk_editable_insert_text (GTK_EDITABLE(entry), text, strlen (text), &tmp_pos);
}
void
gtk_entry_prepend_text (GtkEntry *entry,
const gchar *text)
{
gint tmp_pos;
g_return_if_fail (entry != NULL);
g_return_if_fail (GTK_IS_ENTRY (entry));
g_return_if_fail (text != NULL);
tmp_pos = 0;
gtk_editable_insert_text (GTK_EDITABLE(entry), text, strlen (text), &tmp_pos);
}
void
gtk_entry_set_position (GtkEntry *entry,
gint position)
{
g_return_if_fail (entry != NULL);
g_return_if_fail (GTK_IS_ENTRY (entry));
if ((position == -1) || (position > entry->text_length))
GTK_EDITABLE(entry)->current_pos = entry->text_length;
else
GTK_EDITABLE(entry)->current_pos = position;
entry_adjust_scroll (entry);
}
static void
gtk_entry_set_position_from_editable (GtkEditable *editable,
gint position)
{
gtk_entry_set_position (GTK_ENTRY (editable), position);
}
void
gtk_entry_set_visibility (GtkEntry *entry,
gboolean visible)
{
g_return_if_fail (entry != NULL);
g_return_if_fail (GTK_IS_ENTRY (entry));
GTK_EDITABLE (entry)->visible = visible ? TRUE : FALSE;
gtk_entry_queue_draw (entry);
}
void
gtk_entry_set_editable(GtkEntry *entry,
gboolean editable)
{
g_return_if_fail (entry != NULL);
g_return_if_fail (GTK_IS_ENTRY (entry));
gtk_editable_set_editable (GTK_EDITABLE (entry), editable);
}
gchar*
gtk_entry_get_text (GtkEntry *entry)
{
g_return_val_if_fail (entry != NULL, NULL);
g_return_val_if_fail (GTK_IS_ENTRY (entry), NULL);
return entry->text;
}
static void
gtk_entry_finalize (GObject *object)
{
GtkEntry *entry;
g_return_if_fail (GTK_IS_ENTRY (object));
entry = GTK_ENTRY (object);
if (entry->layout)
g_object_unref (G_OBJECT (entry->layout));
gtk_object_unref (GTK_OBJECT (entry->im_context));
if (entry->timer)
gtk_timeout_remove (entry->timer);
entry->text_size = 0;
if (entry->text)
g_free (entry->text);
entry->text = NULL;
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gtk_entry_realize (GtkWidget *widget)
{
GtkEntry *entry;
GtkEditable *editable;
GtkRequisition requisition;
GdkWindowAttr attributes;
gint attributes_mask;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_ENTRY (widget));
GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
entry = GTK_ENTRY (widget);
editable = GTK_EDITABLE (widget);
gtk_widget_get_child_requisition (widget, &requisition);
attributes.window_type = GDK_WINDOW_CHILD;
attributes.x = widget->allocation.x;
attributes.y = widget->allocation.y + (widget->allocation.height -
requisition.height) / 2;
attributes.width = widget->allocation.width;
attributes.height = requisition.height;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual (widget);
attributes.colormap = gtk_widget_get_colormap (widget);
attributes.event_mask = gtk_widget_get_events (widget);
attributes.event_mask |= (GDK_EXPOSURE_MASK |
GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK |
GDK_BUTTON1_MOTION_MASK |
GDK_BUTTON3_MOTION_MASK |
GDK_POINTER_MOTION_HINT_MASK |
GDK_ENTER_NOTIFY_MASK |
GDK_LEAVE_NOTIFY_MASK |
GDK_KEY_PRESS_MASK);
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
gdk_window_set_user_data (widget->window, entry);
attributes.x = widget->style->xthickness;
attributes.y = widget->style->ythickness;
attributes.width = widget->allocation.width - attributes.x * 2;
attributes.height = requisition.height - attributes.y * 2;
attributes.cursor = entry->cursor = gdk_cursor_new (GDK_XTERM);
attributes_mask |= GDK_WA_CURSOR;
entry->text_area = gdk_window_new (widget->window, &attributes, attributes_mask);
gdk_window_set_user_data (entry->text_area, entry);
widget->style = gtk_style_attach (widget->style, widget->window);
gdk_window_set_background (widget->window, &widget->style->base[GTK_WIDGET_STATE (widget)]);
gdk_window_set_background (entry->text_area, &widget->style->base[GTK_WIDGET_STATE (widget)]);
gdk_window_show (entry->text_area);
if (editable->selection_start_pos != editable->selection_end_pos)
gtk_editable_claim_selection (editable, TRUE, GDK_CURRENT_TIME);
gtk_im_context_set_client_window (entry->im_context, entry->text_area);
}
static void
gtk_entry_unrealize (GtkWidget *widget)
{
GtkEntry *entry;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_ENTRY (widget));
entry = GTK_ENTRY (widget);
gtk_im_context_set_client_window (entry->im_context, entry->text_area);
if (entry->text_area)
{
gdk_window_set_user_data (entry->text_area, NULL);
gdk_window_destroy (entry->text_area);
entry->text_area = NULL;
gdk_cursor_destroy (entry->cursor);
entry->cursor = NULL;
}
if (GTK_WIDGET_CLASS (parent_class)->unrealize)
(* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
}
static void
gtk_entry_draw_focus (GtkWidget *widget)
{
gint width, height;
gint x, y;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_ENTRY (widget));
if (GTK_WIDGET_DRAWABLE (widget))
{
x = 0;
y = 0;
gdk_window_get_size (widget->window, &width, &height);
if (GTK_WIDGET_HAS_FOCUS (widget))
{
x += 1;
y += 1;
width -= 2;
height -= 2;
}
gtk_paint_shadow (widget->style, widget->window,
GTK_STATE_NORMAL, GTK_SHADOW_IN,
NULL, widget, "entry",
x, y, width, height);
if (GTK_WIDGET_HAS_FOCUS (widget))
{
gdk_window_get_size (widget->window, &width, &height);
gtk_paint_focus (widget->style, widget->window,
NULL, widget, "entry",
0, 0, width - 1, height - 1);
}
}
}
static void
gtk_entry_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkEntry *entry;
PangoFontMetrics metrics;
PangoFont *font;
gchar *lang;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_ENTRY (widget));
g_return_if_fail (requisition != NULL);
entry = GTK_ENTRY (widget);
gtk_entry_ensure_layout (entry);
/* hackish for now, get metrics
*/
font = pango_context_load_font (pango_layout_get_context (entry->layout),
widget->style->font_desc);
lang = pango_context_get_lang (pango_layout_get_context (entry->layout));
pango_font_get_metrics (font, lang, &metrics);
g_free (lang);
g_object_unref (G_OBJECT (font));
entry->ascent = metrics.ascent;
entry->descent = metrics.descent;
requisition->width = MIN_ENTRY_WIDTH + (widget->style->xthickness + INNER_BORDER) * 2;
requisition->height = ((metrics.ascent + metrics.descent) / PANGO_SCALE +
(widget->style->ythickness + INNER_BORDER) * 2);
}
static void
gtk_entry_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkEntry *entry;
GtkEditable *editable;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_ENTRY (widget));
g_return_if_fail (allocation != NULL);
widget->allocation = *allocation;
entry = GTK_ENTRY (widget);
editable = GTK_EDITABLE (widget);
if (GTK_WIDGET_REALIZED (widget))
{
/* We call gtk_widget_get_child_requisition, since we want (for
* backwards compatibility reasons) the realization here to
* be affected by the usize of the entry, if set
*/
GtkRequisition requisition;
gtk_widget_get_child_requisition (widget, &requisition);
gdk_window_move_resize (widget->window,
allocation->x,
allocation->y + (allocation->height - requisition.height) / 2,
allocation->width, requisition.height);
gdk_window_move_resize (entry->text_area,
widget->style->xthickness,
widget->style->ythickness,
allocation->width - widget->style->xthickness * 2,
requisition.height - widget->style->ythickness * 2);
}
/* And make sure the cursor is on screen */
entry_adjust_scroll (entry);
}
static void
gtk_entry_draw (GtkWidget *widget,
GdkRectangle *area)
{
GtkEntry *entry;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_ENTRY (widget));
g_return_if_fail (area != NULL);
entry = GTK_ENTRY (widget);
if (GTK_WIDGET_DRAWABLE (widget))
{
GdkRectangle tmp_area = *area;
tmp_area.x -= widget->style->xthickness;
tmp_area.y -= widget->style->xthickness;
gdk_window_begin_paint_rect (entry->text_area, &tmp_area);
gtk_widget_draw_focus (widget);
gtk_entry_draw_text (GTK_ENTRY (widget));
gtk_entry_draw_cursor (GTK_ENTRY (widget));
gdk_window_end_paint (entry->text_area);
}
}
static gint
gtk_entry_expose (GtkWidget *widget,
GdkEventExpose *event)
{
GtkEntry *entry;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_ENTRY (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
entry = GTK_ENTRY (widget);
if (widget->window == event->window)
gtk_widget_draw_focus (widget);
else if (entry->text_area == event->window)
{
gtk_entry_draw_text (GTK_ENTRY (widget));
gtk_entry_draw_cursor (GTK_ENTRY (widget));
}
return FALSE;
}
static gint
gtk_entry_button_press (GtkWidget *widget,
GdkEventButton *event)
{
GtkEntry *entry;
GtkEditable *editable;
gint tmp_pos;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_ENTRY (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
if (ctext_atom == GDK_NONE)
ctext_atom = gdk_atom_intern ("COMPOUND_TEXT", FALSE);
entry = GTK_ENTRY (widget);
editable = GTK_EDITABLE (widget);
if (entry->button && (event->button != entry->button))
return FALSE;
entry->button = event->button;
if (!GTK_WIDGET_HAS_FOCUS (widget))
gtk_widget_grab_focus (widget);
if (event->button == 1)
{
switch (event->type)
{
case GDK_BUTTON_PRESS:
gtk_grab_add (widget);
tmp_pos = gtk_entry_find_position (entry, event->x + entry->scroll_offset);
/* Set it now, so we display things right. We'll unset it
* later if things don't work out */
editable->has_selection = TRUE;
gtk_entry_set_selection (editable, tmp_pos, tmp_pos);
editable->current_pos = editable->selection_start_pos;
break;
case GDK_2BUTTON_PRESS:
gtk_select_word (entry, event->time);
break;
case GDK_3BUTTON_PRESS:
gtk_select_line (entry, event->time);
break;
default:
break;
}
return TRUE;
}
else if (event->type == GDK_BUTTON_PRESS)
{
if ((event->button == 2) && editable->editable)
{
if (editable->selection_start_pos == editable->selection_end_pos ||
editable->has_selection)
editable->current_pos = gtk_entry_find_position (entry, event->x + entry->scroll_offset);
gtk_selection_convert (widget, GDK_SELECTION_PRIMARY,
ctext_atom, event->time);
}
else
{
gtk_grab_add (widget);
tmp_pos = gtk_entry_find_position (entry, event->x + entry->scroll_offset);
gtk_entry_set_selection (editable, tmp_pos, tmp_pos);
editable->has_selection = FALSE;
editable->current_pos = editable->selection_start_pos;
if (gdk_selection_owner_get (GDK_SELECTION_PRIMARY) == widget->window)
gtk_selection_owner_set (NULL, GDK_SELECTION_PRIMARY, event->time);
}
return TRUE;
}
return FALSE;
}
static gint
gtk_entry_button_release (GtkWidget *widget,
GdkEventButton *event)
{
GtkEntry *entry;
GtkEditable *editable;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_ENTRY (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
entry = GTK_ENTRY (widget);
editable = GTK_EDITABLE (widget);
if (entry->button != event->button)
return FALSE;
entry->button = 0;
if (event->button == 1)
{
gtk_grab_remove (widget);
editable->has_selection = FALSE;
if (editable->selection_start_pos != editable->selection_end_pos)
{
if (gtk_selection_owner_set (widget,
GDK_SELECTION_PRIMARY,
event->time))
editable->has_selection = TRUE;
else
gtk_entry_queue_draw (entry);
}
else
{
if (gdk_selection_owner_get (GDK_SELECTION_PRIMARY) == widget->window)
gtk_selection_owner_set (NULL, GDK_SELECTION_PRIMARY, event->time);
}
return TRUE;
}
else if (event->button == 3)
{
gtk_grab_remove (widget);
return TRUE;
}
return FALSE;
}
static gint
gtk_entry_motion_notify (GtkWidget *widget,
GdkEventMotion *event)
{
GtkEntry *entry;
gint x;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_ENTRY (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
entry = GTK_ENTRY (widget);
if (entry->button == 0)
return FALSE;
x = event->x;
if (event->is_hint || (entry->text_area != event->window))
gdk_window_get_pointer (entry->text_area, &x, NULL, NULL);
GTK_EDITABLE(entry)->selection_end_pos = gtk_entry_find_position (entry, x + entry->scroll_offset);
GTK_EDITABLE(entry)->current_pos = GTK_EDITABLE(entry)->selection_end_pos;
entry_adjust_scroll (entry);
gtk_entry_queue_draw (entry);
return TRUE;
}
static gint
gtk_entry_key_press (GtkWidget *widget,
GdkEventKey *event)
{
GtkEntry *entry;
GtkEditable *editable;
gint return_val;
gint key;
guint initial_pos;
gint extend_selection;
gint extend_start;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_ENTRY (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
entry = GTK_ENTRY (widget);
editable = GTK_EDITABLE (widget);
return_val = FALSE;
if(editable->editable == FALSE)
return FALSE;
initial_pos = editable->current_pos;
extend_selection = event->state & GDK_SHIFT_MASK;
extend_start = FALSE;
if (extend_selection)
{
if (editable->selection_start_pos == editable->selection_end_pos)
{
editable->selection_start_pos = editable->current_pos;
editable->selection_end_pos = editable->current_pos;
}
extend_start = (editable->current_pos == editable->selection_start_pos);
}
switch (event->keyval)
{
case GDK_BackSpace:
return_val = TRUE;
if (event->state & GDK_CONTROL_MASK)
gtk_delete_backward_word (entry);
else
gtk_delete_backward_character (entry);
break;
case GDK_Clear:
return_val = TRUE;
gtk_delete_line (entry);
break;
case GDK_Insert:
return_val = TRUE;
if (event->state & GDK_SHIFT_MASK)
{
extend_selection = FALSE;
gtk_editable_paste_clipboard (editable);
}
else if (event->state & GDK_CONTROL_MASK)
{
gtk_editable_copy_clipboard (editable);
}
else
{
/* gtk_toggle_insert(entry) -- IMPLEMENT */
}
break;
case GDK_Delete:
return_val = TRUE;
if (event->state & GDK_CONTROL_MASK)
gtk_delete_forward_word (entry);
else if (event->state & GDK_SHIFT_MASK)
{
extend_selection = FALSE;
gtk_editable_cut_clipboard (editable);
}
else
gtk_delete_forward_character (entry);
break;
case GDK_Home:
return_val = TRUE;
gtk_move_beginning_of_line (entry);
break;
case GDK_End:
return_val = TRUE;
gtk_move_end_of_line (entry);
break;
case GDK_Left:
return_val = TRUE;
if (event->state & GDK_CONTROL_MASK)
gtk_move_backward_word (entry);
else
gtk_move_backward_character (entry);
break;
case GDK_Right:
return_val = TRUE;
if (event->state & GDK_CONTROL_MASK)
gtk_move_forward_word (entry);
else
gtk_move_forward_character (entry);
break;
case GDK_Return:
return_val = TRUE;
gtk_widget_activate (widget);
break;
/* The next two keys should not be inserted literally. Any others ??? */
case GDK_Tab:
case GDK_Escape:
break;
default:
if ((event->keyval >= 0x20) && (event->keyval <= 0xFF))
{
key = event->keyval;
if (event->state & GDK_CONTROL_MASK)
{
if ((key >= 'A') && (key <= 'Z'))
key -= 'A' - 'a';
if ((key >= 'a') && (key <= 'z') && control_keys[key - 'a'])
{
(* control_keys[key - 'a']) (editable, event->time);
return_val = TRUE;
}
break;
}
else if (event->state & GDK_MOD1_MASK)
{
if ((key >= 'A') && (key <= 'Z'))
key -= 'A' - 'a';
if ((key >= 'a') && (key <= 'z') && alt_keys[key - 'a'])
{
(* alt_keys[key - 'a']) (editable, event->time);
return_val = TRUE;
}
break;
}
}
gtk_im_context_filter_keypress (entry->im_context, event);
break;
}
/* since we emit signals from within the above code,
* the widget might already be destroyed or at least
* unrealized.
*/
if (GTK_WIDGET_REALIZED (editable) &&
return_val && (editable->current_pos != initial_pos))
{
if (extend_selection)
{
if (editable->current_pos < editable->selection_start_pos)
editable->selection_start_pos = editable->current_pos;
else if (editable->current_pos > editable->selection_end_pos)
editable->selection_end_pos = editable->current_pos;
else
{
if (extend_start)
editable->selection_start_pos = editable->current_pos;
else
editable->selection_end_pos = editable->current_pos;
}
}
else
{
editable->selection_start_pos = 0;
editable->selection_end_pos = 0;
}
gtk_editable_claim_selection (editable,
editable->selection_start_pos != editable->selection_end_pos,
event->time);
entry_adjust_scroll (entry);
gtk_entry_queue_draw (entry);
}
return return_val;
}
static gint
gtk_entry_focus_in (GtkWidget *widget,
GdkEventFocus *event)
{
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_ENTRY (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
gtk_widget_draw_focus (widget);
gtk_entry_queue_draw (GTK_ENTRY (widget));
gtk_im_context_focus_in (GTK_ENTRY (widget)->im_context);
return FALSE;
}
static gint
gtk_entry_focus_out (GtkWidget *widget,
GdkEventFocus *event)
{
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_ENTRY (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
gtk_widget_draw_focus (widget);
gtk_entry_queue_draw (GTK_ENTRY (widget));
gtk_im_context_focus_out (GTK_ENTRY (widget)->im_context);
return FALSE;
}
static void
gtk_entry_ensure_layout (GtkEntry *entry)
{
GtkWidget *widget = GTK_WIDGET (entry);
if (!entry->layout)
{
entry->layout = gtk_widget_create_pango_layout (widget, NULL);
pango_layout_set_text (entry->layout, entry->text, entry->n_bytes);
}
}
static void
gtk_entry_draw_text (GtkEntry *entry)
{
GtkWidget *widget;
PangoLayoutLine *line;
GtkEditable *editable = GTK_EDITABLE (entry);
g_return_if_fail (entry != NULL);
g_return_if_fail (GTK_IS_ENTRY (entry));
if (GTK_WIDGET_DRAWABLE (entry))
{
PangoRectangle logical_rect;
gint area_width, area_height;
gint y_pos;
gdk_window_get_size (entry->text_area, &area_width, &area_height);
area_height = PANGO_SCALE * (area_height - 2 * INNER_BORDER);
widget = GTK_WIDGET (entry);
gtk_paint_flat_box (widget->style, entry->text_area,
GTK_WIDGET_STATE(widget), GTK_SHADOW_NONE,
NULL, widget, "entry_bg",
0, 0, area_width, area_height);
gtk_entry_ensure_layout (entry);
line = pango_layout_get_lines (entry->layout)->data;
pango_layout_line_get_extents (line, NULL, &logical_rect);
/* Align primarily for locale's ascent/descent */
y_pos = ((area_height - entry->ascent - entry->descent) / 2 +
entry->ascent + logical_rect.y);
/* Now see if we need to adjust to fit in actual drawn string */
if (logical_rect.height > area_height)
y_pos = (area_height - logical_rect.height) / 2;
else if (y_pos < 0)
y_pos = 0;
else if (y_pos + logical_rect.height > area_height)
y_pos = area_height - logical_rect.height;
y_pos = INNER_BORDER + y_pos / PANGO_SCALE;
gdk_draw_layout (entry->text_area, widget->style->text_gc [widget->state],
INNER_BORDER - entry->scroll_offset, y_pos,
entry->layout);
if (editable->selection_start_pos != editable->selection_end_pos)
{
gint *ranges;
gint n_ranges, i;
gint start_index = g_utf8_offset_to_pointer (entry->text,
MIN (editable->selection_start_pos, editable->selection_end_pos)) - entry->text;
gint end_index = g_utf8_offset_to_pointer (entry->text,
MAX (editable->selection_start_pos, editable->selection_end_pos)) - entry->text;
GtkStateType selected_state = editable->has_selection ? GTK_STATE_SELECTED : GTK_STATE_ACTIVE;
GdkRegion *clip_region = gdk_region_new ();
pango_layout_line_get_x_ranges (line, start_index, end_index, &ranges, &n_ranges);
for (i=0; i < n_ranges; i++)
{
GdkRectangle rect;
rect.x = INNER_BORDER - entry->scroll_offset + ranges[2*i] / PANGO_SCALE;
rect.y = y_pos;
rect.width = (ranges[2*i + 1] - ranges[2*i]) / PANGO_SCALE;
rect.height = logical_rect.height / PANGO_SCALE;
gdk_draw_rectangle (entry->text_area, widget->style->bg_gc [selected_state], TRUE,
rect.x, rect.y, rect.width, rect.height);
gdk_region_union_with_rect (clip_region, &rect);
}
gdk_gc_set_clip_region (widget->style->fg_gc [selected_state], clip_region);
gdk_draw_layout (entry->text_area, widget->style->fg_gc [selected_state],
INNER_BORDER - entry->scroll_offset, y_pos,
entry->layout);
gdk_gc_set_clip_region (widget->style->fg_gc [selected_state], NULL);
gdk_region_destroy (clip_region);
g_free (ranges);
}
}
}
static void
gtk_entry_draw_cursor (GtkEntry *entry)
{
g_return_if_fail (entry != NULL);
g_return_if_fail (GTK_IS_ENTRY (entry));
if (GTK_WIDGET_DRAWABLE (entry))
{
GtkWidget *widget = GTK_WIDGET (entry);
GtkEditable *editable = GTK_EDITABLE (entry);
if (GTK_WIDGET_HAS_FOCUS (widget) &&
(editable->selection_start_pos == editable->selection_end_pos))
{
gint xoffset = INNER_BORDER - entry->scroll_offset;
gint strong_x, weak_x;
gint text_area_height;
gdk_window_get_size (entry->text_area, NULL, &text_area_height);
gtk_entry_get_cursor_locations (entry, &strong_x, &weak_x);
gdk_draw_line (entry->text_area, widget->style->bg_gc[GTK_STATE_SELECTED],
xoffset + strong_x, INNER_BORDER,
xoffset + strong_x, text_area_height - INNER_BORDER);
if (weak_x != strong_x)
gdk_draw_line (entry->text_area, widget->style->fg_gc[GTK_STATE_NORMAL],
xoffset + weak_x, INNER_BORDER,
xoffset + weak_x, text_area_height - INNER_BORDER);
}
}
}
static void
gtk_entry_queue_draw (GtkEntry *entry)
{
g_return_if_fail (entry != NULL);
g_return_if_fail (GTK_IS_ENTRY (entry));
if (GTK_WIDGET_REALIZED (entry))
{
GdkRectangle rect = { 0 };
gdk_window_get_size (entry->text_area, &rect.width, &rect.height);
gdk_window_invalidate_rect (entry->text_area, &rect, 0);
}
}
#if 0
static gint
gtk_entry_timer (gpointer data)
{
GtkEntry *entry;
GDK_THREADS_ENTER ();
entry = GTK_ENTRY (data);
entry->timer = 0;
GDK_THREADS_LEAVE ();
return FALSE;
}
#endif
static gint
gtk_entry_find_position (GtkEntry *entry,
gint x)
{
PangoLayoutLine *line;
gint index;
gint pos;
gboolean trailing;
gtk_entry_ensure_layout (entry);
line = pango_layout_get_lines (entry->layout)->data;
pango_layout_line_x_to_index (line, x * PANGO_SCALE, &index, &trailing);
pos = g_utf8_pointer_to_offset (entry->text, entry->text + index);
if (trailing)
pos += 1;
return pos;
}
static void
gtk_entry_get_cursor_locations (GtkEntry *entry,
gint *strong_x,
gint *weak_x)
{
GtkEditable *editable = GTK_EDITABLE (entry);
int index;
PangoRectangle strong_pos, weak_pos;
gtk_entry_ensure_layout (entry);
index = g_utf8_offset_to_pointer (entry->text, editable->current_pos) - entry->text;
pango_layout_get_cursor_pos (entry->layout, index, &strong_pos, &weak_pos);
if (strong_x)
*strong_x = strong_pos.x / PANGO_SCALE;
if (weak_x)
*weak_x = weak_pos.x / PANGO_SCALE;
}
static void
entry_adjust_scroll (GtkEntry *entry)
{
GtkWidget *widget;
gint min_offset, max_offset;
gint text_area_width;
gint strong_x, weak_x;
gint strong_xoffset, weak_xoffset;
PangoLayoutLine *line;
PangoRectangle logical_rect;
g_return_if_fail (entry != NULL);
g_return_if_fail (GTK_IS_ENTRY (entry));
widget = GTK_WIDGET (entry);
text_area_width = widget->allocation.width - 2 * (widget->style->xthickness + INNER_BORDER);
if (!entry->layout)
return;
line = pango_layout_get_lines (entry->layout)->data;
/* Display as much text as we can */
pango_layout_line_get_extents (line, NULL, &logical_rect);
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
{
min_offset = 0;
max_offset = MAX (min_offset, logical_rect.width / PANGO_SCALE - text_area_width);
}
else
{
max_offset = logical_rect.width / PANGO_SCALE - text_area_width;
min_offset = MIN (0, max_offset);
}
entry->scroll_offset = CLAMP (entry->scroll_offset, min_offset, max_offset);
/* And make sure cursors are on screen. Note that the cursor is
* actually drawn one pixel into the INNER_BORDER space on
* the right, when the scroll is at the utmost right. This
* looks better to to me than confining the cursor inside the
* border entirely, though it means that the cursor gets one
* pixel closer to the the edge of the widget on the right than
* on the left. This might need changing if one changed
* INNER_BORDER from 2 to 1, as one would do on a
* small-screen-real-estate display.
*
* We always make sure that the strong cursor is on screen, and
* put the weak cursor on screen if possible.
*/
gtk_entry_get_cursor_locations (entry, &strong_x, &weak_x);
strong_xoffset = strong_x - entry->scroll_offset;
if (strong_xoffset < 0)
{
entry->scroll_offset += strong_xoffset;
strong_xoffset = 0;
}
else if (strong_xoffset > text_area_width)
{
entry->scroll_offset += strong_xoffset - text_area_width;
strong_xoffset = text_area_width;
}
weak_xoffset = weak_x - entry->scroll_offset;
if (weak_xoffset < 0 && strong_xoffset - weak_xoffset <= text_area_width)
{
entry->scroll_offset += weak_xoffset;
}
else if (weak_xoffset > text_area_width &&
strong_xoffset - (weak_xoffset - text_area_width) >= 0)
{
entry->scroll_offset += weak_xoffset - text_area_width;
}
gtk_widget_queue_draw (GTK_WIDGET (entry));
}
static void
gtk_entry_insert_text (GtkEditable *editable,
const gchar *new_text,
gint new_text_length,
gint *position)
{
gint index;
gint n_chars;
GtkEntry *entry;
GtkWidget *widget;
g_return_if_fail (editable != NULL);
g_return_if_fail (GTK_IS_ENTRY (editable));
g_return_if_fail (position != NULL);
g_return_if_fail (*position >= 0 || *position < GTK_ENTRY (editable)->text_size);
entry = GTK_ENTRY (editable);
widget = GTK_WIDGET (editable);
if (new_text_length < 0)
new_text_length = strlen (new_text);
n_chars = g_utf8_strlen (new_text, new_text_length);
if (entry->text_max_length > 0 && n_chars + entry->text_length > entry->text_max_length)
{
gdk_beep ();
n_chars = entry->text_max_length - entry->text_length;
}
if (new_text_length + entry->n_bytes + 1 > entry->text_size)
{
while (new_text_length + entry->n_bytes + 1 > entry->text_size)
{
if (entry->text_size == 0)
entry->text_size = MIN_SIZE;
else
{
if (2 * (guint)entry->text_size < MAX_SIZE &&
2 * (guint)entry->text_size > entry->text_size)
entry->text_size *= 2;
else
{
entry->text_size = MAX_SIZE;
new_text_length = entry->text_size - new_text_length - 1;
break;
}
}
}
entry->text = g_realloc (entry->text, entry->text_size);
}
index = g_utf8_offset_to_pointer (entry->text, *position) - entry->text;
g_memmove (entry->text + index + new_text_length, entry->text + index, entry->n_bytes - index);
memcpy (entry->text + index, new_text, new_text_length);
entry->n_bytes += new_text_length;
entry->text_length += n_chars;
/* NUL terminate for safety and convenience */
entry->text[entry->n_bytes] = '\0';
if (editable->current_pos > *position)
editable->current_pos += n_chars;
if (editable->selection_start_pos > *position)
editable->selection_start_pos += n_chars;
if (editable->selection_end_pos > *position)
editable->selection_end_pos += n_chars;
*position += n_chars;
if (entry->layout)
pango_layout_set_text (entry->layout, entry->text, entry->n_bytes);
gtk_entry_queue_draw (entry);
}
static void
gtk_entry_delete_text (GtkEditable *editable,
gint start_pos,
gint end_pos)
{
GtkEntry *entry;
g_return_if_fail (editable != NULL);
g_return_if_fail (GTK_IS_ENTRY (editable));
entry = GTK_ENTRY (editable);
if (end_pos < 0)
end_pos = entry->text_length;
if ((start_pos < end_pos) &&
(start_pos >= 0) &&
(end_pos <= entry->text_length))
{
gint start_index = g_utf8_offset_to_pointer (entry->text, start_pos) - entry->text;
gint end_index = g_utf8_offset_to_pointer (entry->text, end_pos) - entry->text;
g_memmove (entry->text + start_index, entry->text + end_index, entry->n_bytes - end_index);
entry->text_length -= (end_pos - start_pos);
entry->n_bytes -= (end_index - start_index);
if (editable->current_pos > start_pos)
editable->current_pos -= MIN (editable->current_pos, end_pos) - start_pos;
if (editable->selection_start_pos > start_pos)
editable->selection_start_pos -= MIN (editable->selection_start_pos, end_pos) - start_pos;
if (editable->selection_end_pos > start_pos)
editable->selection_end_pos -= MIN (editable->selection_end_pos, end_pos) - start_pos;
}
gtk_entry_queue_draw (entry);
if (entry->layout)
pango_layout_set_text (entry->layout, entry->text, entry->n_bytes);
}
static void
gtk_entry_update_text (GtkEditable *editable,
gint start_pos,
gint end_pos)
{
GtkEntry *entry = GTK_ENTRY (editable);
gtk_entry_queue_draw (entry);
}
static gchar *
gtk_entry_get_chars (GtkEditable *editable,
gint start_pos,
gint end_pos)
{
GtkEntry *entry;
gint start_index, end_index;
g_return_val_if_fail (editable != NULL, NULL);
g_return_val_if_fail (GTK_IS_ENTRY (editable), NULL);
entry = GTK_ENTRY (editable);
if (end_pos < 0)
end_pos = entry->text_length;
start_pos = MIN (entry->text_length, start_pos);
end_pos = MIN (entry->text_length, end_pos);
start_index = g_utf8_offset_to_pointer (entry->text, start_pos) - entry->text;
end_index = g_utf8_offset_to_pointer (entry->text, end_pos) - entry->text;
return g_strndup (entry->text + start_index, end_index - start_index);
}
static void
gtk_entry_move_cursor (GtkEditable *editable,
gint x,
gint y)
{
GtkEntry *entry;
gint index;
entry = GTK_ENTRY (editable);
index = g_utf8_offset_to_pointer (entry->text, editable->current_pos) - entry->text;
/* Horizontal motion */
if ((gint)editable->current_pos < -x)
editable->current_pos = 0;
else if (editable->current_pos + x > entry->text_length)
editable->current_pos = entry->text_length;
else
editable->current_pos += x;
/* Ignore vertical motion */
}
static void
gtk_entry_move_cursor_visually (GtkEditable *editable,
gint count)
{
GtkEntry *entry;
gint index;
entry = GTK_ENTRY (editable);
index = g_utf8_offset_to_pointer (entry->text, editable->current_pos) - entry->text;
gtk_entry_ensure_layout (entry);
while (count != 0)
{
int new_index, new_trailing;
if (count > 0)
{
pango_layout_move_cursor_visually (entry->layout, index, 0, 1, &new_index, &new_trailing);
count--;
}
else
{
pango_layout_move_cursor_visually (entry->layout, index, 0, -1, &new_index, &new_trailing);
count++;
}
if (new_index < 0 || new_index == G_MAXINT)
break;
if (new_trailing)
index = g_utf8_next_char (entry->text + new_index) - entry->text;
else
index = new_index;
}
editable->current_pos = g_utf8_pointer_to_offset (entry->text, entry->text + index);
}
static void
gtk_move_forward_character (GtkEntry *entry)
{
gtk_entry_move_cursor_visually (GTK_EDITABLE (entry), 1);
}
static void
gtk_move_backward_character (GtkEntry *entry)
{
gtk_entry_move_cursor_visually (GTK_EDITABLE (entry), -1);
}
static void
gtk_entry_move_word (GtkEditable *editable,
gint n)
{
while (n-- > 0)
gtk_move_forward_word (GTK_ENTRY (editable));
while (n++ < 0)
gtk_move_backward_word (GTK_ENTRY (editable));
}
static void
gtk_move_forward_word (GtkEntry *entry)
{
GtkEditable *editable;
gint i;
editable = GTK_EDITABLE (entry);
/* Prevent any leak of information */
if (!editable->visible)
{
editable->current_pos = entry->text_length;
return;
}
if (entry->text && (editable->current_pos < entry->text_length))
{
PangoLogAttr *log_attrs;
gint n_attrs, old_pos;
gtk_entry_ensure_layout (entry);
pango_layout_get_log_attrs (entry->layout, &log_attrs, &n_attrs);
i = old_pos = editable->current_pos;
/* Advance over white space */
while (i < n_attrs && log_attrs[i].is_white)
i++;
/* Find the next word beginning */
i++;
while (i < n_attrs && !log_attrs[i].is_word_stop)
i++;
editable->current_pos = MAX (entry->text_length, i);
/* Back up over white space */
while (i > 0 && log_attrs[i - 1].is_white)
i--;
if (i != old_pos)
editable->current_pos = i;
g_free (log_attrs);
}
}
static void
gtk_move_backward_word (GtkEntry *entry)
{
GtkEditable *editable;
gint i;
editable = GTK_EDITABLE (entry);
/* Prevent any leak of information */
if (!editable->visible)
{
editable->current_pos = 0;
return;
}
if (entry->text && editable->current_pos > 0)
{
PangoLogAttr *log_attrs;
gint n_attrs;
gtk_entry_ensure_layout (entry);
pango_layout_get_log_attrs (entry->layout, &log_attrs, &n_attrs);
i = editable->current_pos - 1;
/* Find the previous word beginning */
while (i > 0 && !log_attrs[i].is_word_stop)
i--;
g_free (log_attrs);
}
}
static void
gtk_entry_move_to_column (GtkEditable *editable, gint column)
{
GtkEntry *entry;
entry = GTK_ENTRY (editable);
if (column < 0 || column > entry->text_length)
editable->current_pos = entry->text_length;
else
editable->current_pos = column;
}
static void
gtk_move_beginning_of_line (GtkEntry *entry)
{
gtk_entry_move_to_column (GTK_EDITABLE (entry), 0);
}
static void
gtk_move_end_of_line (GtkEntry *entry)
{
gtk_entry_move_to_column (GTK_EDITABLE (entry), -1);
}
static void
gtk_entry_kill_char (GtkEditable *editable,
gint direction)
{
if (editable->selection_start_pos != editable->selection_end_pos)
gtk_editable_delete_selection (editable);
else
{
gint old_pos = editable->current_pos;
if (direction >= 0)
{
gtk_entry_move_cursor (editable, 1, 0);
gtk_editable_delete_text (editable, old_pos, editable->current_pos);
}
else
{
gtk_entry_move_cursor (editable, -1, 0);
gtk_editable_delete_text (editable, editable->current_pos, old_pos);
}
}
}
static void
gtk_delete_forward_character (GtkEntry *entry)
{
gtk_entry_kill_char (GTK_EDITABLE (entry), 1);
}
static void
gtk_delete_backward_character (GtkEntry *entry)
{
gtk_entry_kill_char (GTK_EDITABLE (entry), -1);
}
static void
gtk_entry_kill_word (GtkEditable *editable,
gint direction)
{
if (editable->selection_start_pos != editable->selection_end_pos)
gtk_editable_delete_selection (editable);
else
{
gint old_pos = editable->current_pos;
if (direction >= 0)
{
gtk_entry_move_word (editable, 1);
gtk_editable_delete_text (editable, old_pos, editable->current_pos);
}
else
{
gtk_entry_move_word (editable, -1);
gtk_editable_delete_text (editable, editable->current_pos, old_pos);
}
}
}
static void
gtk_delete_forward_word (GtkEntry *entry)
{
gtk_entry_kill_word (GTK_EDITABLE (entry), 1);
}
static void
gtk_delete_backward_word (GtkEntry *entry)
{
gtk_entry_kill_word (GTK_EDITABLE (entry), -1);
}
static void
gtk_entry_kill_line (GtkEditable *editable,
gint direction)
{
gint old_pos = editable->current_pos;
if (direction >= 0)
{
gtk_entry_move_to_column (editable, -1);
gtk_editable_delete_text (editable, old_pos, editable->current_pos);
}
else
{
gtk_entry_move_to_column (editable, 0);
gtk_editable_delete_text (editable, editable->current_pos, old_pos);
}
}
static void
gtk_delete_line (GtkEntry *entry)
{
gtk_entry_move_to_column (GTK_EDITABLE (entry), 0);
gtk_entry_kill_line (GTK_EDITABLE (entry), 1);
}
static void
gtk_delete_to_line_end (GtkEntry *entry)
{
gtk_editable_delete_text (GTK_EDITABLE(entry), GTK_EDITABLE(entry)->current_pos, entry->text_length);
}
static void
gtk_select_word (GtkEntry *entry,
guint32 time)
{
GtkEditable *editable;
gint start_pos;
gint end_pos;
editable = GTK_EDITABLE (entry);
gtk_move_backward_word (entry);
start_pos = editable->current_pos;
gtk_move_forward_word (entry);
end_pos = editable->current_pos;
editable->has_selection = TRUE;
gtk_entry_set_selection (editable, start_pos, end_pos);
gtk_editable_claim_selection (editable, start_pos != end_pos, time);
}
static void
gtk_select_line (GtkEntry *entry,
guint32 time)
{
GtkEditable *editable;
editable = GTK_EDITABLE (entry);
editable->has_selection = TRUE;
gtk_entry_set_selection (editable, 0, entry->text_length);
gtk_editable_claim_selection (editable, entry->text_length != 0, time);
editable->current_pos = editable->selection_end_pos;
}
static void
gtk_entry_set_selection (GtkEditable *editable,
gint start,
gint end)
{
GtkEntry *entry;
g_return_if_fail (editable != NULL);
g_return_if_fail (GTK_IS_ENTRY (editable));
entry = GTK_ENTRY (editable);
if (end < 0)
end = GTK_ENTRY (editable)->text_length;
editable->selection_start_pos = start;
editable->selection_end_pos = end;
gtk_entry_queue_draw (GTK_ENTRY (editable));
}
void
gtk_entry_select_region (GtkEntry *entry,
gint start,
gint end)
{
gtk_editable_select_region (GTK_EDITABLE (entry), start, end);
}
void
gtk_entry_set_max_length (GtkEntry *entry,
guint16 max)
{
g_return_if_fail (entry != NULL);
g_return_if_fail (GTK_IS_ENTRY (entry));
if (max && entry->text_length > max)
gtk_editable_delete_text (GTK_EDITABLE(entry), max, -1);
entry->text_max_length = max;
}
static void
gtk_entry_style_set (GtkWidget *widget,
GtkStyle *previous_style)
{
GtkEntry *entry = GTK_ENTRY (widget);
if (previous_style && GTK_WIDGET_REALIZED (widget))
{
entry_adjust_scroll (entry);
gdk_window_set_background (widget->window, &widget->style->base[GTK_WIDGET_STATE (widget)]);
gdk_window_set_background (entry->text_area, &widget->style->base[GTK_WIDGET_STATE (widget)]);
}
if (entry->layout)
pango_layout_context_changed (entry->layout);
}
static void
gtk_entry_direction_changed (GtkWidget *widget,
GtkTextDirection previous_dir)
{
GtkEntry *entry = GTK_ENTRY (widget);
if (entry->layout)
pango_layout_context_changed (entry->layout);
GTK_WIDGET_CLASS (parent_class)->direction_changed (widget, previous_dir);
}
static void
gtk_entry_state_changed (GtkWidget *widget,
GtkStateType previous_state)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_ENTRY (widget));
if (GTK_WIDGET_REALIZED (widget))
{
gdk_window_set_background (widget->window, &widget->style->base[GTK_WIDGET_STATE (widget)]);
gdk_window_set_background (GTK_ENTRY (widget)->text_area, &widget->style->base[GTK_WIDGET_STATE (widget)]);
}
if (GTK_WIDGET_DRAWABLE (widget))
gtk_widget_queue_clear(widget);
}
static void
gtk_entry_commit_cb (GtkIMContext *context,
const gchar *str,
GtkEntry *entry)
{
GtkEditable *editable = GTK_EDITABLE (entry);
gint tmp_pos = editable->current_pos;
gtk_editable_insert_text (editable, str, strlen (str), &tmp_pos);
editable->current_pos = tmp_pos;
}
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