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gtk2/gtk/gtkentry.c
Owen Taylor 32cd050cfe More extensive debugging output 
Fri Apr  3 17:14:55 1998  Owen Taylor  <owt1@cornell.edu>

	* gdk/gdk.c: More extensive debugging output

	* gtk/gtkalignment.c gtk/gtkbutton.c gtk/gtkcheckbutton.c
	  gtk/gtkclist.c gtk/gtkeventbox.c gtk/gtkhandlebox.c
	  gtk/gtk[hv]box.c gtk/gtk[hv]paned.c gtk/gtklist.c
	  gtk/gtkmenu.c gtk/gtkmenubar.c gtk/gtkmenuitem.c
	  gtk/gtknotebook.c gtk/gtktable.c gtk/gtktree.c
	  gtk/gtktreeitem.c gtk/gtkviewport.c

	Avoid assigning negative values to unsigned allocation.width and
	height

	* gtk/gtkwindow.c:

	Instead of realizing the widget, then size allocating, (resulting
	in XMoveResizeWindows for all children, do the size allocation
	first, then realize.

	In gtk_real_window_move_resize, combine move and resize
	into a single GDK/X call when possible.

	* gtk/gtkclist.c gtk/gtkdrawingarea.c:

	Remove assumption that the widget will be size allocated _after_
	it is realized.

	* gtk/gtklist.c (gtk_list_motion_notify): Removed useless
	debugging message.
1998-04-03 23:17:16 +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 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <ctype.h>
#include <string.h>
#ifdef USE_XIM
#include "gdk/gdkx.h"
#endif
#include "gdk/gdkkeysyms.h"
#include "gdk/gdki18n.h"
#include "gtkentry.h"
#include "gtkmain.h"
#include "gtkselection.h"
#include "gtksignal.h"
#include "gtkprivate.h"
#define MIN_ENTRY_WIDTH 150
#define DRAW_TIMEOUT 20
#define INNER_BORDER 2
static void gtk_entry_class_init (GtkEntryClass *klass);
static void gtk_entry_init (GtkEntry *entry);
static void gtk_entry_finalize (GtkObject *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_make_backing_pixmap (GtkEntry *entry,
gint width, gint height);
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_draw_cursor (GtkEntry *entry);
static void gtk_entry_draw_cursor_on_drawable
(GtkEntry *entry,
GdkDrawable *drawable);
static void gtk_entry_style_set (GtkWidget *widget,
GtkStyle *previous_style);
static void gtk_entry_queue_draw (GtkEntry *entry);
static gint gtk_entry_timer (gpointer data);
static gint gtk_entry_position (GtkEntry *entry,
gint x);
void gtk_entry_adjust_scroll (GtkEntry *entry);
static void gtk_entry_grow_text (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);
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_recompute_offsets (GtkEntry *entry);
static gint gtk_entry_find_char (GtkEntry *entry,
gint position);
static gint gtk_entry_find_position (GtkEntry *entry,
gint position);
static GtkWidgetClass *parent_class = NULL;
static GdkAtom ctext_atom = GDK_NONE;
static GtkTextFunction control_keys[26] =
{
(GtkTextFunction)gtk_move_beginning_of_line, /* a */
(GtkTextFunction)gtk_move_backward_character, /* b */
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 */
gtk_editable_paste_clipboard, /* v */
(GtkTextFunction)gtk_delete_backward_word, /* w */
gtk_editable_cut_clipboard, /* x */
NULL, /* y */
NULL, /* z */
};
static 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 */
};
guint
gtk_entry_get_type ()
{
static guint entry_type = 0;
if (!entry_type)
{
GtkTypeInfo entry_info =
{
"GtkEntry",
sizeof (GtkEntry),
sizeof (GtkEntryClass),
(GtkClassInitFunc) gtk_entry_class_init,
(GtkObjectInitFunc) gtk_entry_init,
(GtkArgSetFunc) NULL,
(GtkArgGetFunc) NULL,
};
entry_type = gtk_type_unique (gtk_editable_get_type (), &entry_info);
}
return entry_type;
}
static void
gtk_entry_class_init (GtkEntryClass *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_editable_get_type ());
object_class->finalize = gtk_entry_finalize;
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;
editable_class->insert_text = gtk_entry_insert_text;
editable_class->delete_text = gtk_entry_delete_text;
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->changed = (void (*)(GtkEditable *)) gtk_entry_adjust_scroll;
editable_class->activate = NULL;
}
static void
gtk_entry_init (GtkEntry *entry)
{
GTK_WIDGET_SET_FLAGS (entry, GTK_CAN_FOCUS);
entry->text_area = NULL;
entry->backing_pixmap = NULL;
entry->text = NULL;
entry->text_size = 0;
entry->text_length = 0;
entry->text_max_length = 0;
entry->scroll_offset = 0;
entry->timer = 0;
entry->button = 0;
entry->visible = 1;
entry->nchars = 0;
entry->char_pos = NULL;
entry->char_offset = NULL;
gtk_entry_grow_text (entry);
}
GtkWidget*
gtk_entry_new ()
{
return GTK_WIDGET (gtk_type_new (gtk_entry_get_type ()));
}
GtkWidget*
gtk_entry_new_with_max_length (guint16 max)
{
GtkEntry *entry;
entry = gtk_type_new (gtk_entry_get_type ());
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;
editable->selection_start_pos = 0;
editable->selection_end_pos = 0;
if (GTK_WIDGET_DRAWABLE (entry))
gtk_entry_draw_text (entry);
}
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);
GTK_EDITABLE(entry)->current_pos = 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);
GTK_EDITABLE(entry)->current_pos = 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;
}
void
gtk_entry_set_visibility (GtkEntry *entry,
gboolean visible)
{
g_return_if_fail (entry != NULL);
g_return_if_fail (GTK_IS_ENTRY (entry));
entry->visible = visible;
}
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 (entry)->editable = editable;
gtk_entry_queue_draw (entry);
}
gchar*
gtk_entry_get_text (GtkEntry *entry)
{
static char empty_str[2] = "";
g_return_val_if_fail (entry != NULL, NULL);
g_return_val_if_fail (GTK_IS_ENTRY (entry), NULL);
if (!entry->text)
return empty_str;
return entry->text;
}
static void
gtk_entry_finalize (GtkObject *object)
{
GtkEntry *entry;
g_return_if_fail (object != NULL);
g_return_if_fail (GTK_IS_ENTRY (object));
entry = GTK_ENTRY (object);
#ifdef USE_XIM
if (GTK_EDITABLE(entry)->ic)
{
gdk_ic_destroy (GTK_EDITABLE(entry)->ic);
GTK_EDITABLE(entry)->ic = NULL;
}
#endif
if (entry->timer)
gtk_timeout_remove (entry->timer);
entry->text_size = 0;
if (entry->text)
g_free (entry->text);
if (entry->char_pos)
g_free (entry->char_pos);
if (entry->char_offset)
g_free (entry->char_offset);
entry->text = NULL;
if (entry->backing_pixmap)
gdk_pixmap_unref (entry->backing_pixmap);
(* GTK_OBJECT_CLASS (parent_class)->finalize) (object);
}
static void
gtk_entry_realize (GtkWidget *widget)
{
GtkEntry *entry;
GtkEditable *editable;
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);
attributes.window_type = GDK_WINDOW_CHILD;
attributes.x = widget->allocation.x;
attributes.y = widget->allocation.y;
attributes.width = widget->allocation.width;
attributes.height = widget->allocation.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->klass->xthickness + INNER_BORDER;
attributes.y = widget->style->klass->ythickness + INNER_BORDER;
attributes.width = widget->allocation.width - attributes.x * 2;
attributes.height = widget->allocation.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_STATE_NORMAL]);
gdk_window_set_background (entry->text_area, &widget->style->base[GTK_STATE_NORMAL]);
#ifdef USE_XIM
if (gdk_im_ready ())
{
GdkPoint spot;
GdkRectangle rect;
gint width, height;
GdkEventMask mask;
GdkIMStyle style;
GdkIMStyle supported_style = GdkIMPreeditNone | GdkIMPreeditNothing |
GdkIMPreeditPosition |
GdkIMStatusNone | GdkIMStatusNothing;
if (widget->style && widget->style->font->type != GDK_FONT_FONTSET)
supported_style &= ~GdkIMPreeditPosition;
style = gdk_im_decide_style (supported_style);
switch (style & GdkIMPreeditMask)
{
case GdkIMPreeditPosition:
if (widget->style && widget->style->font->type != GDK_FONT_FONTSET)
{
g_warning ("over-the-spot style requires fontset");
break;
}
gdk_window_get_size (entry->text_area, &width, &height);
rect.x = 0;
rect.y = 0;
rect.width = width;
rect.height = height;
spot.x = 0;
spot.y = height;
editable->ic = gdk_ic_new (entry->text_area, entry->text_area,
style,
"spotLocation", &spot,
"area", &rect,
"fontSet", GDK_FONT_XFONT (widget->style->font),
NULL);
break;
default:
editable->ic = gdk_ic_new (entry->text_area, entry->text_area,
style, NULL);
}
if (editable->ic == NULL)
g_warning ("Can't create input context.");
else
{
GdkColormap *colormap;
mask = gdk_window_get_events (entry->text_area);
mask |= gdk_ic_get_events (editable->ic);
gdk_window_set_events (entry->text_area, mask);
if ((colormap = gtk_widget_get_colormap (widget)) !=
gtk_widget_get_default_colormap ())
{
gdk_ic_set_attr (editable->ic, "preeditAttributes",
"colorMap", GDK_COLORMAP_XCOLORMAP (colormap),
NULL);
}
gdk_ic_set_attr (editable->ic,"preeditAttributes",
"foreground", widget->style->fg[GTK_STATE_NORMAL].pixel,
"background", widget->style->base[GTK_STATE_NORMAL].pixel,
NULL);
}
}
#endif
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_entry_recompute_offsets (entry);
}
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);
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;
}
else
{
gdk_draw_rectangle (widget->window,
widget->style->base_gc[GTK_WIDGET_STATE(widget)],
FALSE, x + 2, y + 2, width - 5, height - 5);
}
gtk_draw_shadow (widget->style, widget->window,
GTK_STATE_NORMAL, GTK_SHADOW_IN,
x, y, width, height);
if (GTK_WIDGET_HAS_FOCUS (widget))
{
gdk_window_get_size (widget->window, &width, &height);
gdk_draw_rectangle (widget->window, widget->style->fg_gc[GTK_STATE_NORMAL],
FALSE, 0, 0, width - 1, height - 1);
}
if (GTK_EDITABLE (widget)->editable)
gtk_entry_draw_cursor (GTK_ENTRY (widget));
}
}
static void
gtk_entry_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_ENTRY (widget));
g_return_if_fail (requisition != NULL);
requisition->width = MIN_ENTRY_WIDTH + (widget->style->klass->xthickness + INNER_BORDER) * 2;
requisition->height = (widget->style->font->ascent +
widget->style->font->descent +
(widget->style->klass->ythickness + INNER_BORDER) * 2);
}
static void
gtk_entry_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkEntry *entry;
GtkEditable *editable;
gint offset;
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))
{
gdk_window_move_resize (widget->window,
allocation->x,
allocation->y + (allocation->height - widget->requisition.height) / 2,
allocation->width, widget->requisition.height);
gdk_window_move_resize (entry->text_area,
widget->style->klass->xthickness + INNER_BORDER,
widget->style->klass->ythickness + INNER_BORDER,
allocation->width - (widget->style->klass->xthickness + INNER_BORDER) * 2,
widget->requisition.height - (widget->style->klass->ythickness + INNER_BORDER) * 2);
/* Display as much text as we can */
offset = MAX(0, entry->char_offset[entry->nchars] -
(allocation->width -
(widget->style->klass->xthickness + INNER_BORDER) * 2));
if (entry->scroll_offset > offset)
entry->scroll_offset = offset;
/* And make sure the cursor is on screen */
gtk_entry_adjust_scroll (entry);
#ifdef USE_XIM
if (editable->ic && (gdk_ic_get_style (editable->ic) & GdkIMPreeditPosition))
{
gint width, height;
GdkRectangle rect;
gdk_window_get_size (entry->text_area, &width, &height);
rect.x = 0;
rect.y = 0;
rect.width = width;
rect.height = height;
gdk_ic_set_attr (editable->ic, "preeditAttributes", "area", &rect, NULL);
}
#endif
}
}
static void
gtk_entry_draw (GtkWidget *widget,
GdkRectangle *area)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_ENTRY (widget));
g_return_if_fail (area != NULL);
if (GTK_WIDGET_DRAWABLE (widget))
{
gtk_widget_draw_focus (widget);
gtk_entry_draw_text (GTK_ENTRY (widget));
}
}
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));
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_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;
}
}
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_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_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 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);
}
}
else if (event->button == 3)
{
gtk_grab_remove (widget);
}
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_position (entry, event->x + entry->scroll_offset);
GTK_EDITABLE(entry)->current_pos = GTK_EDITABLE(entry)->selection_end_pos;
gtk_entry_adjust_scroll (entry);
gtk_entry_queue_draw (entry);
return FALSE;
}
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, event->time);
}
else if (event->state & GDK_CONTROL_MASK)
{
gtk_editable_copy_clipboard (editable, event->time);
}
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, event->time);
}
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_signal_emit_by_name (GTK_OBJECT (entry), "activate");
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;
}
}
if (event->length > 0)
{
gint tmp_pos;
extend_selection = FALSE;
gtk_editable_delete_selection (editable);
tmp_pos = editable->current_pos;
gtk_editable_insert_text (editable, event->string, event->length, &tmp_pos);
editable->current_pos = tmp_pos;
return_val = TRUE;
}
break;
}
if (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);
gtk_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);
#ifdef USE_XIM
if (GTK_EDITABLE(widget)->ic)
gdk_im_begin (GTK_EDITABLE(widget)->ic, GTK_ENTRY(widget)->text_area);
#endif
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);
#ifdef USE_XIM
gdk_im_end ();
#endif
return FALSE;
}
static void
gtk_entry_make_backing_pixmap (GtkEntry *entry, gint width, gint height)
{
gint pixmap_width, pixmap_height;
if (!entry->backing_pixmap)
{
/* allocate */
entry->backing_pixmap = gdk_pixmap_new (entry->text_area,
width, height,
-1);
}
else
{
/* reallocate if sizes don't match */
gdk_window_get_size (entry->backing_pixmap,
&pixmap_width, &pixmap_height);
if ((pixmap_width != width) || (pixmap_height != height))
{
gdk_pixmap_unref (entry->backing_pixmap);
entry->backing_pixmap = gdk_pixmap_new (entry->text_area,
width, height,
-1);
}
}
}
static void
gtk_entry_draw_text (GtkEntry *entry)
{
GtkWidget *widget;
GtkEditable *editable;
GtkStateType selected_state;
gint start_char;
gint start_pos;
gint end_pos;
gint start_xoffset;
gint selection_start_pos;
gint selection_end_pos;
gint selection_start_xoffset;
gint selection_end_xoffset;
gint width, height;
gint y;
GdkDrawable *drawable;
gint use_backing_pixmap;
g_return_if_fail (entry != NULL);
g_return_if_fail (GTK_IS_ENTRY (entry));
if (entry->timer)
{
gtk_timeout_remove (entry->timer);
entry->timer = 0;
}
if (!entry->visible)
{
gtk_entry_draw_cursor (entry);
return;
}
if (GTK_WIDGET_DRAWABLE (entry))
{
widget = GTK_WIDGET (entry);
editable = GTK_EDITABLE (entry);
if (!entry->text)
{
gdk_window_clear (entry->text_area);
if (editable->editable)
gtk_entry_draw_cursor (entry);
return;
}
gdk_window_get_size (entry->text_area, &width, &height);
/*
If the widget has focus, draw on a backing pixmap to avoid flickering
and copy it to the text_area.
Otherwise draw to text_area directly for better speed.
*/
use_backing_pixmap = GTK_WIDGET_HAS_FOCUS (widget) && (entry->text != NULL);
if (use_backing_pixmap)
{
gtk_entry_make_backing_pixmap (entry, width, height);
drawable = entry->backing_pixmap;
gdk_draw_rectangle (drawable,
widget->style->base_gc[GTK_WIDGET_STATE(widget)],
TRUE,
0, 0,
width,
height);
}
else
{
drawable = entry->text_area;
gdk_window_clear (entry->text_area);
}
y = (height - (widget->style->font->ascent + widget->style->font->descent)) / 2;
y += widget->style->font->ascent;
start_char = gtk_entry_find_position (entry, entry->scroll_offset);
start_pos = entry->char_pos[start_char];
start_xoffset = entry->char_offset[start_char] - entry->scroll_offset;
end_pos = gtk_entry_position (entry, entry->scroll_offset + width);
if (end_pos < entry->text_length)
end_pos += 1;
selected_state = GTK_STATE_SELECTED;
if (!editable->has_selection)
selected_state = GTK_STATE_ACTIVE;
selection_start_pos = MIN (editable->selection_start_pos, editable->selection_end_pos);
selection_end_pos = MAX (editable->selection_start_pos, editable->selection_end_pos);
selection_start_pos = CLAMP (selection_start_pos, start_pos, end_pos);
selection_end_pos = CLAMP (selection_end_pos, start_pos, end_pos);
selection_start_xoffset =
entry->char_offset[gtk_entry_find_char(entry,selection_start_pos)] -
entry->scroll_offset;
selection_end_xoffset =
entry->char_offset[gtk_entry_find_char(entry,selection_end_pos)] -
entry->scroll_offset;
if (selection_start_pos > start_pos)
gdk_draw_text (drawable, widget->style->font,
widget->style->fg_gc[GTK_STATE_NORMAL],
start_xoffset, y,
entry->text + start_pos,
selection_start_pos - start_pos);
if ((selection_end_pos >= start_pos) &&
(selection_start_pos < end_pos) &&
(selection_start_pos != selection_end_pos))
{
gdk_draw_rectangle (drawable,
widget->style->bg_gc[selected_state],
TRUE,
selection_start_xoffset,
0,
selection_end_xoffset - selection_start_xoffset,
-1);
gdk_draw_text (drawable, widget->style->font,
widget->style->fg_gc[selected_state],
selection_start_xoffset, y,
entry->text + selection_start_pos,
selection_end_pos - selection_start_pos);
}
if (selection_end_pos < end_pos)
gdk_draw_text (drawable, widget->style->font,
widget->style->fg_gc[GTK_STATE_NORMAL],
selection_end_xoffset, y,
entry->text + selection_end_pos,
end_pos - selection_end_pos);
if (editable->editable)
gtk_entry_draw_cursor_on_drawable (entry, drawable);
if (use_backing_pixmap)
gdk_draw_pixmap(entry->text_area,
widget->style->fg_gc[GTK_STATE_NORMAL],
entry->backing_pixmap,
0, 0, 0, 0, width, height);
}
}
static void
gtk_entry_draw_cursor (GtkEntry *entry)
{
g_return_if_fail (entry != NULL);
g_return_if_fail (GTK_IS_ENTRY (entry));
gtk_entry_draw_cursor_on_drawable (entry, entry->text_area);
}
static void
gtk_entry_draw_cursor_on_drawable (GtkEntry *entry, GdkDrawable *drawable)
{
GtkWidget *widget;
GtkEditable *editable;
GdkGC *gc;
gint xoffset;
gint text_area_height;
g_return_if_fail (entry != NULL);
g_return_if_fail (GTK_IS_ENTRY (entry));
if (GTK_WIDGET_DRAWABLE (entry))
{
widget = GTK_WIDGET (entry);
editable = GTK_EDITABLE (entry);
if (entry->visible)
xoffset = entry->char_offset[gtk_entry_find_char (entry, editable->current_pos)];
else
xoffset = 0;
xoffset -= entry->scroll_offset;
if (GTK_WIDGET_HAS_FOCUS (widget) &&
(editable->selection_start_pos == editable->selection_end_pos))
gc = widget->style->fg_gc[GTK_STATE_NORMAL];
else
gc = widget->style->base_gc[GTK_WIDGET_STATE(widget)];
gdk_window_get_size (entry->text_area, NULL, &text_area_height);
gdk_draw_line (drawable, gc, xoffset, 0, xoffset, text_area_height);
#ifdef USE_XIM
if (gdk_im_ready() && editable->ic &&
gdk_ic_get_style (editable->ic) & GdkIMPreeditPosition)
{
GdkPoint spot;
spot.x = xoffset;
spot.y = (text_area_height + (widget->style->font->ascent - widget->style->font->descent) + 1) / 2;
gdk_ic_set_attr (editable->ic, "preeditAttributes", "spotLocation", &spot, NULL);
}
#endif
}
}
static void
gtk_entry_queue_draw (GtkEntry *entry)
{
g_return_if_fail (entry != NULL);
g_return_if_fail (GTK_IS_ENTRY (entry));
if (!entry->timer)
entry->timer = gtk_timeout_add (DRAW_TIMEOUT, gtk_entry_timer, entry);
}
static gint
gtk_entry_timer (gpointer data)
{
GtkEntry *entry;
g_return_val_if_fail (data != NULL, FALSE);
entry = GTK_ENTRY (data);
entry->timer = 0;
gtk_entry_draw_text (entry);
return FALSE;
}
static gint
gtk_entry_find_position (GtkEntry *entry,
gint x)
{
gint start = 0;
gint end = entry->nchars;
gint half;
if (x >= entry->char_offset[end])
return end;
if (x < 0)
return 0;
/* invariant - char_pos[start] <= x < char_pos[end] */
while (start != end)
{
half = (start+end)/2;
if (half == start)
return half;
else if (entry->char_offset[half] <= x)
start = half;
else
end = half;
}
return start;
}
static gint
gtk_entry_position (GtkEntry *entry,
gint x)
{
return entry->char_pos[gtk_entry_find_position(entry, x)];
}
void
gtk_entry_adjust_scroll (GtkEntry *entry)
{
gint xoffset;
gint text_area_width;
g_return_if_fail (entry != NULL);
g_return_if_fail (GTK_IS_ENTRY (entry));
if (!entry->text_area)
return;
gdk_window_get_size (entry->text_area, &text_area_width, NULL);
xoffset = entry->char_offset[gtk_entry_find_char (entry, GTK_EDITABLE(entry)->current_pos)];
xoffset -= entry->scroll_offset;
if (xoffset < 0)
entry->scroll_offset += xoffset;
else if (xoffset > text_area_width)
entry->scroll_offset += xoffset - text_area_width + 1;
}
static void
gtk_entry_grow_text (GtkEntry *entry)
{
gint previous_size;
gint i;
g_return_if_fail (entry != NULL);
g_return_if_fail (GTK_IS_ENTRY (entry));
previous_size = entry->text_size;
if (!entry->text_size)
entry->text_size = 128;
else
entry->text_size *= 2;
entry->text = g_realloc (entry->text, entry->text_size);
entry->char_pos = g_realloc (entry->char_pos,
entry->text_size * sizeof(guint16));
entry->char_offset = g_realloc (entry->char_offset,
entry->text_size * sizeof(guint));
if (entry->text_length == 0) /* initial allocation */
{
entry->char_pos[0] = 0;
entry->char_offset[0] = 0;
}
for (i = previous_size; i < entry->text_size; i++)
entry->text[i] = '\0';
}
static void
gtk_entry_insert_text (GtkEditable *editable,
const gchar *new_text,
gint new_text_length,
gint *position)
{
gchar *text;
gint start_char;
gint end_char;
gint start_pos;
gint last_char;
gint end_pos;
gint last_pos;
gint max_length;
gint i;
gint insertion_chars;
guint16 *insertion_pos = NULL; /* Quiet the compiler */
GtkEntry *entry;
g_return_if_fail (editable != NULL);
g_return_if_fail (GTK_IS_ENTRY (editable));
entry = GTK_ENTRY (editable);
if (new_text_length < 0)
new_text_length = strlen (new_text);
/* The algorithms here will work as long as, the text size (a
* multiple of 2), fits into a guint16 but we specify a shorter
* maximum length so that if the user pastes a very long text, there
* is not a long hang from the slow X_LOCALE functions. */
if (entry->text_max_length == 0)
max_length = 2047;
else
max_length = MIN (2047, entry->text_max_length);
/* Make sure we do not exceed the maximum size of the entry. */
if (new_text_length + entry->text_length > max_length)
new_text_length = max_length - entry->text_length;
/* Don't insert anything, if there was nothing to insert. */
if (new_text_length <= 0)
return;
/* Find the length of the inserted text in characters, chop off
partial/invalid characters */
if (gtk_use_mb)
{
gint len = 0;
insertion_pos = g_new (guint16, new_text_length+1);
insertion_chars = 0;
for (i=0; i<new_text_length; i+=len)
{
len = mblen (&new_text[i], MIN(MB_CUR_MAX,new_text_length-i));
if (len < 0)
break;
insertion_pos[insertion_chars] = i;
insertion_chars++;
}
insertion_pos[insertion_chars] = i;
new_text_length = i;
}
else
insertion_chars = new_text_length;
/* Make sure we are inserting at integral character position */
start_char = gtk_entry_find_char (entry, *position);
start_pos = entry->char_pos[start_char];
end_pos = start_pos + new_text_length;
last_pos = new_text_length + entry->text_length;
if (editable->selection_start_pos >= *position)
editable->selection_start_pos += new_text_length;
if (editable->selection_end_pos >= *position)
editable->selection_end_pos += new_text_length;
while (last_pos >= entry->text_size)
gtk_entry_grow_text (entry);
text = entry->text;
for (i = last_pos - 1; i >= end_pos; i--)
text[i] = text[i- (end_pos - start_pos)];
for (i = start_pos; i < end_pos; i++)
text[i] = new_text[i - start_pos];
if (gtk_use_mb)
{
/* Fix up the character positions */
end_char = start_char + insertion_chars;
last_char = entry->nchars + insertion_chars;
for (i = last_char; i >= end_char; i--)
entry->char_pos[i]
= entry->char_pos[i - insertion_chars] + new_text_length;
for (i = 1; i < insertion_chars ; i++)
entry->char_pos[start_char+i] =
entry->char_pos[start_char] + insertion_pos[i];
g_free (insertion_pos);
}
else
{
end_char = end_pos;
last_char = last_pos;
for (i = start_char ; i <= last_char ; i++)
entry->char_pos[i] = i;
}
/* Fix up the the character offsets */
if (GTK_WIDGET_REALIZED (entry))
{
gint offset = 0;
for (i = last_char; i >= end_char; i--)
entry->char_offset[i]
= entry->char_offset[i - insertion_chars];
for (i=start_char; i<end_char; i++)
{
entry->char_offset[i] = entry->char_offset[start_char] + offset;
offset += gdk_text_width (GTK_WIDGET (entry)->style->font,
entry->text + entry->char_pos[i],
entry->char_pos[i+1] - entry->char_pos[i]);
}
for (i = end_char ; i <= last_char ; i++)
entry->char_offset[i] += offset;
}
entry->text_length += new_text_length;
entry->nchars += insertion_chars;
*position = end_pos;
gtk_entry_queue_draw (entry);
}
/* Recompute the x offsets of all characters in the buffer */
static void
gtk_entry_recompute_offsets (GtkEntry *entry)
{
gint i;
gint offset = 0;
for (i=0; i<entry->nchars; i++)
{
entry->char_offset[i] = offset;
offset += gdk_text_width (GTK_WIDGET (entry)->style->font,
entry->text + entry->char_pos[i],
entry->char_pos[i+1] - entry->char_pos[i]);
}
entry->char_offset[i] = offset;
}
/* Given a position in the entry, find the character index of the
* last character with position <= the given position
*/
static gint
gtk_entry_find_char (GtkEntry *entry, gint position)
{
gint start = 0;
gint end = entry->nchars;
gint half;
if (position >= entry->char_pos[end])
return end;
if (position < 0)
return 0;
/* invariant - char_pos[start] <= position < char_pos[end] */
while (start != end)
{
half = (start+end)/2;
if (half == start)
return half;
else if (entry->char_pos[half] <= position)
start = half;
else
end = half;
}
return start;
}
static void
gtk_entry_delete_text (GtkEditable *editable,
gint start_pos,
gint end_pos)
{
gchar *text;
gint deletion_length;
gint start_char;
gint end_char;
gint i;
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;
start_char = gtk_entry_find_char (entry, start_pos);
end_char = gtk_entry_find_char (entry, end_pos);
start_pos = entry->char_pos[start_char];
end_pos = entry->char_pos[end_char];
if (editable->selection_start_pos > start_pos)
editable->selection_start_pos -= MIN(end_pos, editable->selection_start_pos) - start_pos;
if (editable->selection_end_pos > start_pos)
editable->selection_end_pos -= MIN(end_pos, editable->selection_end_pos) - start_pos;
if ((start_pos < end_pos) &&
(start_pos >= 0) &&
(end_pos <= entry->text_length))
{
text = entry->text;
deletion_length = end_pos - start_pos;
/* Fix up the character offsets */
if (GTK_WIDGET_REALIZED (entry))
{
gint deletion_width =
entry->char_offset[end_char] - entry->char_offset[start_char];
for (i = 0 ; i <= entry->nchars - end_char; i++)
entry->char_offset[start_char+i] = entry->char_offset[end_char+i] - deletion_width;
}
for (i = end_pos; i < entry->text_length; i++)
text[i - deletion_length] = text[i];
for (i = entry->text_length - deletion_length; i < entry->text_length; i++)
text[i] = '\0';
for (i = 0 ; i <= entry->nchars - end_char; i++)
entry->char_pos[start_char+i] = entry->char_pos[end_char+i] - deletion_length;
entry->nchars -= end_char - start_char;
entry->text_length -= deletion_length;
editable->current_pos = start_pos;
}
gtk_entry_queue_draw (entry);
}
static void
gtk_entry_update_text (GtkEditable *editable,
gint start_pos,
gint end_pos)
{
gtk_entry_queue_draw (GTK_ENTRY(editable));
}
static gchar *
gtk_entry_get_chars (GtkEditable *editable,
gint start_pos,
gint end_pos)
{
gchar *retval;
GtkEntry *entry;
gchar c;
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);
if (start_pos <= end_pos)
{
c = entry->text[end_pos];
entry->text[end_pos] = '\0';
retval = g_strdup (&entry->text[start_pos]);
entry->text[end_pos] = c;
return retval;
}
else
return NULL;
}
static void
gtk_move_forward_character (GtkEntry *entry)
{
gint len;
GtkEditable *editable;
editable = GTK_EDITABLE (entry);
if (gtk_use_mb)
{
if (editable->current_pos < entry->text_length)
{
len = mblen (entry->text+editable->current_pos, MB_CUR_MAX);
editable->current_pos += (len>0)? len:1;
}
if (editable->current_pos > entry->text_length)
editable->current_pos = entry->text_length;
}
else
{
if (editable->current_pos < entry->text_length)
editable->current_pos ++;
}
}
static void
gtk_move_backward_character (GtkEntry *entry)
{
GtkEditable *editable;
editable = GTK_EDITABLE (entry);
if (0 < editable->current_pos)
{
if (gtk_use_mb)
editable->current_pos =
entry->char_pos[gtk_entry_find_char (entry, editable->current_pos - 1)];
else
editable->current_pos--;
}
}
static void
gtk_move_forward_word (GtkEntry *entry)
{
GtkEditable *editable;
gchar *text;
gint i;
wchar_t c;
gint len;
editable = GTK_EDITABLE (entry);
if (entry->text && (editable->current_pos < entry->text_length))
{
text = entry->text;
i = editable->current_pos;
if (gtk_use_mb)
{
len = mbtowc (&c, text+i, MB_CUR_MAX);
if (!iswalnum(c))
for (; i < entry->text_length; i+=len)
{
len = mbtowc (&c, text+i, MB_CUR_MAX);
if (len < 1 || iswalnum(c))
break;
}
for (; i < entry->text_length; i+=len)
{
len = mbtowc (&c, text+i, MB_CUR_MAX);
if (len < 1 || !iswalnum(c))
break;
}
editable->current_pos = i;
if (editable->current_pos > entry->text_length)
editable->current_pos = entry->text_length;
}
else
{
if (!isalnum (text[i]))
for (; i < entry->text_length; i++)
{
if (isalnum(text[i]))
break;
}
for (; i < entry->text_length; i++)
{
if (!isalnum(text[i]))
break;
}
editable->current_pos = i;
}
}
}
static void
gtk_move_backward_word (GtkEntry *entry)
{
GtkEditable *editable;
gchar *text;
gint i;
wchar_t c;
editable = GTK_EDITABLE (entry);
if (entry->text && editable->current_pos > 0)
{
text = entry->text;
if (gtk_use_mb)
{
i = gtk_entry_find_char (entry, editable->current_pos - 1);
mbtowc (&c, text+entry->char_pos[i], MB_CUR_MAX);
if (!iswalnum(c))
for (; i >= 0; i--)
{
mbtowc (&c, text+entry->char_pos[i], MB_CUR_MAX);
if (iswalnum(c))
break;
}
for (; i >= 0; i--)
{
mbtowc (&c, text+entry->char_pos[i], MB_CUR_MAX);
if (!iswalnum(c))
{
i++;
break;
}
}
if (i < 0)
i = 0;
editable->current_pos = entry->char_pos[i];
}
else
{
i = editable->current_pos - 1;
if (!isalnum(text[i]))
for (; i >= 0; i--)
{
if (isalnum(text[i]))
break;
}
for (; i >= 0; i--)
{
if (!isalnum(text[i]))
{
i++;
break;
}
}
if (i < 0)
i = 0;
editable->current_pos = i;
}
}
}
static void
gtk_move_beginning_of_line (GtkEntry *entry)
{
GTK_EDITABLE (entry)->current_pos = 0;
}
static void
gtk_move_end_of_line (GtkEntry *entry)
{
GTK_EDITABLE (entry)->current_pos = entry->text_length;
}
static void
gtk_delete_forward_character (GtkEntry *entry)
{
GtkEditable *editable;
gint old_pos;
editable = GTK_EDITABLE (entry);
if (editable->selection_start_pos != editable->selection_end_pos)
gtk_editable_delete_selection (editable);
else
{
old_pos = editable->current_pos;
gtk_move_forward_character (entry);
gtk_editable_delete_text (editable, old_pos, editable->current_pos);
}
}
static void
gtk_delete_backward_character (GtkEntry *entry)
{
GtkEditable *editable;
gint old_pos;
editable = GTK_EDITABLE (entry);
if (editable->selection_start_pos != editable->selection_end_pos)
gtk_editable_delete_selection (editable);
else
{
old_pos = editable->current_pos;
gtk_move_backward_character (entry);
gtk_editable_delete_text (editable, editable->current_pos, old_pos);
}
}
static void
gtk_delete_forward_word (GtkEntry *entry)
{
GtkEditable *editable;
gint old_pos;
editable = GTK_EDITABLE (entry);
if (editable->selection_start_pos != editable->selection_end_pos)
gtk_editable_delete_selection (editable);
else
{
old_pos = editable->current_pos;
gtk_move_forward_word (entry);
gtk_editable_delete_text (editable, old_pos, editable->current_pos);
}
}
static void
gtk_delete_backward_word (GtkEntry *entry)
{
GtkEditable *editable;
gint old_pos;
editable = GTK_EDITABLE (entry);
if (editable->selection_start_pos != editable->selection_end_pos)
gtk_editable_delete_selection (editable);
else
{
old_pos = editable->current_pos;
gtk_move_backward_word (entry);
gtk_editable_delete_text (editable, editable->current_pos, old_pos);
}
}
static void
gtk_delete_line (GtkEntry *entry)
{
gtk_editable_delete_text (GTK_EDITABLE(entry), 0, entry->text_length);
}
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)
{
g_return_if_fail (editable != NULL);
g_return_if_fail (GTK_IS_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;
gint scroll_char;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_ENTRY (widget));
if (previous_style && GTK_WIDGET_REALIZED (widget))
{
entry = GTK_ENTRY (widget);
scroll_char = gtk_entry_find_position (entry, entry->scroll_offset);
gtk_entry_recompute_offsets (GTK_ENTRY (widget));
entry->scroll_offset = entry->char_offset[scroll_char];
}
}
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