AuroraMiddleware/gtk2
1
0
Fork 0
forked from AuroraMiddleware/gtk
Code Issues Pull Requests Projects Releases Wiki Activity
81fe36047e
gtk2/gtk/gtkentry.c
Tim Janik 4af33fa24d hm, initital refcount revolution commit ;) 
still some gnits left, but keep working on it ;)
-timj
1998-01-30 23:47:09 +00:00

2120 lines
56 KiB
C
Raw Blame History

/* 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"
#define MIN_ENTRY_WIDTH 150
#define DRAW_TIMEOUT 20
#define INNER_BORDER 2
enum {
INSERT_TEXT,
DELETE_TEXT,
CHANGED,
SET_TEXT,
ACTIVATE,
LAST_SIGNAL
};
typedef void (*GtkTextFunction) (GtkEntry *entry, GdkEventKey *event);
typedef void (*GtkEntrySignal1) (GtkObject *object,
gpointer arg1,
gint arg2,
gpointer arg3,
gpointer data);
typedef void (*GtkEntrySignal2) (GtkObject *object,
gint arg1,
gint arg2,
gpointer data);
static void gtk_entry_marshal_signal_1 (GtkObject *object,
GtkSignalFunc func,
gpointer func_data,
GtkArg *args);
static void gtk_entry_marshal_signal_2 (GtkObject *object,
GtkSignalFunc func,
gpointer func_data,
GtkArg *args);
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 gint gtk_entry_selection_clear (GtkWidget *widget,
GdkEventSelection *event);
static void gtk_entry_selection_handler (GtkWidget *widget,
GtkSelectionData *selection_data,
gpointer data);
static void gtk_entry_selection_received (GtkWidget *widget,
GtkSelectionData *selection_data);
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_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 (GtkEntry *entry,
const gchar *new_text,
gint new_text_length,
gint *position);
static void gtk_entry_delete_text (GtkEntry *entry,
gint start_pos,
gint end_pos);
static void gtk_real_entry_insert_text (GtkEntry *entry,
const gchar *new_text,
gint new_text_length,
gint *position);
static void gtk_real_entry_delete_text (GtkEntry *entry,
gint start_pos,
gint end_pos);
static gint move_backward_character (gchar *str, gint index);
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_delete_selection (GtkEntry *entry);
static void gtk_select_word (GtkEntry *entry);
static void gtk_select_line (GtkEntry *entry);
static void gtk_entry_cut_clipboard (GtkEntry *entry,
GdkEventKey *event);
static void gtk_entry_copy_clipboard (GtkEntry *entry,
GdkEventKey *event);
static void gtk_entry_paste_clipboard (GtkEntry *entry,
GdkEventKey *event);
static GtkWidgetClass *parent_class = NULL;
static gint entry_signals[LAST_SIGNAL] = { 0 };
static GdkAtom ctext_atom = GDK_NONE;
static GdkAtom text_atom = GDK_NONE;
static GdkAtom clipboard_atom = GDK_NONE;
static GtkTextFunction control_keys[26] =
{
(GtkTextFunction)gtk_move_beginning_of_line, /* a */
(GtkTextFunction)gtk_move_backward_character, /* b */
gtk_entry_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_entry_paste_clipboard, /* v */
(GtkTextFunction)gtk_delete_backward_word, /* w */
gtk_entry_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_widget_get_type (), &entry_info);
}
return entry_type;
}
static void
gtk_entry_class_init (GtkEntryClass *class)
{
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
object_class = (GtkObjectClass*) class;
widget_class = (GtkWidgetClass*) class;
parent_class = gtk_type_class (gtk_widget_get_type ());
entry_signals[INSERT_TEXT] =
gtk_signal_new ("insert_text",
GTK_RUN_LAST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkEntryClass, insert_text),
gtk_entry_marshal_signal_1,
GTK_TYPE_NONE, 3,
GTK_TYPE_STRING, GTK_TYPE_INT,
GTK_TYPE_POINTER);
entry_signals[DELETE_TEXT] =
gtk_signal_new ("delete_text",
GTK_RUN_LAST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkEntryClass, delete_text),
gtk_entry_marshal_signal_2,
GTK_TYPE_NONE, 2,
GTK_TYPE_INT, GTK_TYPE_INT);
entry_signals[CHANGED] =
gtk_signal_new ("changed",
GTK_RUN_LAST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkEntryClass, changed),
gtk_signal_default_marshaller,
GTK_TYPE_NONE, 0);
entry_signals[SET_TEXT] =
gtk_signal_new ("set_text",
GTK_RUN_LAST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkEntryClass, set_text),
gtk_signal_default_marshaller,
GTK_TYPE_NONE, 0);
entry_signals[ACTIVATE] =
gtk_signal_new ("activate",
GTK_RUN_LAST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkEntryClass, activate),
gtk_signal_default_marshaller,
GTK_TYPE_NONE, 0);
gtk_object_class_add_signals (object_class, entry_signals, LAST_SIGNAL);
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->selection_clear_event = gtk_entry_selection_clear;
widget_class->selection_received = gtk_entry_selection_received;
class->insert_text = gtk_real_entry_insert_text;
class->delete_text = gtk_real_entry_delete_text;
class->changed = gtk_entry_adjust_scroll;
class->set_text = NULL; /* user defined handling */
class->activate = NULL; /* user defined handling */
}
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->current_pos = 0;
entry->selection_start_pos = 0;
entry->selection_end_pos = 0;
entry->scroll_offset = 0;
entry->have_selection = FALSE;
entry->timer = 0;
entry->visible = 1;
entry->editable = 1;
entry->clipboard_text = NULL;
#ifdef USE_XIM
entry->ic = NULL;
#endif
if (!clipboard_atom)
clipboard_atom = gdk_atom_intern ("CLIPBOARD", FALSE);
gtk_selection_add_handler (GTK_WIDGET(entry), GDK_SELECTION_PRIMARY,
GDK_TARGET_STRING, gtk_entry_selection_handler,
NULL, NULL);
gtk_selection_add_handler (GTK_WIDGET(entry), clipboard_atom,
GDK_TARGET_STRING, gtk_entry_selection_handler,
NULL, NULL);
if (!text_atom)
text_atom = gdk_atom_intern ("TEXT", FALSE);
gtk_selection_add_handler (GTK_WIDGET(entry), GDK_SELECTION_PRIMARY,
text_atom,
gtk_entry_selection_handler,
NULL, NULL);
gtk_selection_add_handler (GTK_WIDGET(entry), clipboard_atom,
text_atom,
gtk_entry_selection_handler,
NULL, NULL);
if (!ctext_atom)
ctext_atom = gdk_atom_intern ("COMPOUND_TEXT", FALSE);
gtk_selection_add_handler (GTK_WIDGET(entry), GDK_SELECTION_PRIMARY,
ctext_atom,
gtk_entry_selection_handler,
NULL, NULL);
gtk_selection_add_handler (GTK_WIDGET(entry), clipboard_atom,
ctext_atom,
gtk_entry_selection_handler,
NULL, NULL);
}
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;
g_return_if_fail (entry != NULL);
g_return_if_fail (GTK_IS_ENTRY (entry));
gtk_real_entry_delete_text (entry, 0, entry->text_length);
tmp_pos = 0;
gtk_entry_insert_text (entry, text, strlen (text), &tmp_pos);
entry->current_pos = tmp_pos;
entry->selection_start_pos = 0;
entry->selection_end_pos = 0;
if (GTK_WIDGET_DRAWABLE (entry))
gtk_entry_draw_text (entry);
gtk_signal_emit (GTK_OBJECT (entry), entry_signals[SET_TEXT]);
}
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));
tmp_pos = entry->text_length;
gtk_entry_insert_text (entry, text, strlen (text), &tmp_pos);
entry->current_pos = tmp_pos;
gtk_signal_emit (GTK_OBJECT (entry), entry_signals[SET_TEXT]);
}
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));
tmp_pos = 0;
gtk_entry_insert_text (entry, text, strlen (text), &tmp_pos);
entry->current_pos = tmp_pos;
gtk_signal_emit (GTK_OBJECT (entry), entry_signals[SET_TEXT]);
}
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))
entry->current_pos = entry->text_length;
else
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));
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_marshal_signal_1 (GtkObject *object,
GtkSignalFunc func,
gpointer func_data,
GtkArg *args)
{
GtkEntrySignal1 rfunc;
rfunc = (GtkEntrySignal1) func;
(* rfunc) (object, GTK_VALUE_STRING (args[0]), GTK_VALUE_INT (args[1]),
GTK_VALUE_POINTER (args[2]), func_data);
}
static void
gtk_entry_marshal_signal_2 (GtkObject *object,
GtkSignalFunc func,
gpointer func_data,
GtkArg *args)
{
GtkEntrySignal2 rfunc;
rfunc = (GtkEntrySignal2) func;
(* rfunc) (object, GTK_VALUE_INT (args[0]), GTK_VALUE_INT (args[1]),
func_data);
}
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 (entry->ic)
{
gdk_ic_destroy (entry->ic);
entry->ic = NULL;
}
#endif
if (entry->timer)
gtk_timeout_remove (entry->timer);
if (entry->text)
g_free (entry->text);
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;
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);
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->white);
gdk_window_set_background (entry->text_area, &widget->style->white);
#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;
entry->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:
entry->ic = gdk_ic_new (entry->text_area, entry->text_area,
style, NULL);
}
if (entry->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 (entry->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 (entry->ic, "preeditAttributes",
"colorMap", GDK_COLORMAP_XCOLORMAP (colormap),
NULL);
}
gdk_ic_set_attr (entry->ic,"preeditAttributes",
"foreground", widget->style->fg[GTK_STATE_NORMAL].pixel,
"background", widget->style->white.pixel,
NULL);
}
}
#endif
gdk_window_show (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));
GTK_WIDGET_UNSET_FLAGS (widget, GTK_REALIZED | GTK_MAPPED);
entry = GTK_ENTRY (widget);
gtk_style_detach (widget->style);
if (entry->text_area)
{
gdk_window_set_user_data (entry->text_area, NULL);
gdk_window_destroy (entry->text_area);
gdk_cursor_destroy (entry->cursor);
}
if (widget->window)
{
gdk_window_set_user_data (widget->window, NULL);
gdk_window_destroy (widget->window);
}
entry->text_area = NULL;
widget->window = NULL;
}
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->white_gc, 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);
}
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;
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);
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);
entry->scroll_offset = 0;
gtk_entry_adjust_scroll (entry);
#ifdef USE_XIM
if (entry->ic && (gdk_ic_get_style (entry->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 (entry->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;
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);
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);
gtk_entry_select_region (entry, tmp_pos, tmp_pos);
entry->current_pos = entry->selection_start_pos;
break;
case GDK_2BUTTON_PRESS:
gtk_select_word (entry);
break;
case GDK_3BUTTON_PRESS:
gtk_select_line (entry);
break;
default:
break;
}
}
else if (event->type == GDK_BUTTON_PRESS)
{
if (event->button == 2)
{
if (entry->selection_start_pos == entry->selection_end_pos ||
entry->have_selection)
entry->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_select_region (entry, tmp_pos, tmp_pos);
entry->have_selection = FALSE;
entry->current_pos = entry->selection_start_pos;
}
}
return FALSE;
}
static gint
gtk_entry_button_release (GtkWidget *widget,
GdkEventButton *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);
if (event->button == 1)
{
entry = GTK_ENTRY (widget);
gtk_grab_remove (widget);
entry->have_selection = FALSE;
if (entry->selection_start_pos != entry->selection_end_pos)
{
if (gtk_selection_owner_set (widget,
GDK_SELECTION_PRIMARY,
event->time))
{
entry->have_selection = TRUE;
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);
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_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);
x = event->x;
if (event->is_hint || (entry->text_area != event->window))
gdk_window_get_pointer (entry->text_area, &x, NULL, NULL);
entry->selection_end_pos = gtk_entry_position (entry, event->x + entry->scroll_offset);
entry->current_pos = 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;
gint return_val;
gint key;
gint tmp_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);
return_val = FALSE;
if(entry->editable == FALSE)
return FALSE;
extend_selection = event->state & GDK_SHIFT_MASK;
extend_start = FALSE;
if (extend_selection)
{
if (entry->selection_start_pos == entry->selection_end_pos)
{
entry->selection_start_pos = entry->current_pos;
entry->selection_end_pos = entry->current_pos;
}
extend_start = (entry->current_pos == entry->selection_start_pos);
}
switch (event->keyval)
{
case GDK_BackSpace:
return_val = TRUE;
if (entry->selection_start_pos != entry->selection_end_pos)
gtk_delete_selection (entry);
else 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_entry_paste_clipboard (entry, event);
}
else if (event->state & GDK_CONTROL_MASK)
{
gtk_entry_copy_clipboard (entry, event);
}
else
{
/* gtk_toggle_insert(entry) -- IMPLEMENT */
}
break;
case GDK_Delete:
return_val = TRUE;
if (entry->selection_start_pos != entry->selection_end_pos)
gtk_delete_selection (entry);
else
{
if (event->state & GDK_CONTROL_MASK)
gtk_delete_line (entry);
else if (event->state & GDK_SHIFT_MASK)
gtk_entry_cut_clipboard (entry, event);
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;
gtk_move_backward_character (entry);
break;
case GDK_Right:
return_val = TRUE;
gtk_move_forward_character (entry);
break;
case GDK_Return:
return_val = TRUE;
gtk_signal_emit (GTK_OBJECT (entry), entry_signals[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']) (entry, event);
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']) (entry, event);
return_val = TRUE;
}
break;
}
}
if (event->length > 0)
{
extend_selection = FALSE;
gtk_delete_selection (entry);
tmp_pos = entry->current_pos;
gtk_entry_insert_text (entry, event->string, event->length, &tmp_pos);
entry->current_pos = tmp_pos;
return_val = TRUE;
}
break;
}
if (return_val)
{
if (extend_selection)
{
if (entry->current_pos < entry->selection_start_pos)
entry->selection_start_pos = entry->current_pos;
else if (entry->current_pos > entry->selection_end_pos)
entry->selection_end_pos = entry->current_pos;
else
{
if (extend_start)
entry->selection_start_pos = entry->current_pos;
else
entry->selection_end_pos = entry->current_pos;
}
}
else
{
entry->selection_start_pos = 0;
entry->selection_end_pos = 0;
}
/* alex stuff */
if (entry->selection_start_pos != entry->selection_end_pos)
{
if (gtk_selection_owner_set (widget, GDK_SELECTION_PRIMARY, event->time))
{
entry->have_selection = TRUE;
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);
}
/* end of alex stuff */
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_ENTRY(widget)->ic)
gdk_im_begin (GTK_ENTRY(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 gint
gtk_entry_selection_clear (GtkWidget *widget,
GdkEventSelection *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);
/* Let the selection handling code know that the selection
* has been changed, since we've overriden the default handler */
gtk_selection_clear (widget, event);
entry = GTK_ENTRY (widget);
if (event->selection == GDK_SELECTION_PRIMARY)
{
if (entry->have_selection)
{
entry->have_selection = FALSE;
gtk_entry_queue_draw (entry);
}
}
else if (event->selection == clipboard_atom)
{
g_free (entry->clipboard_text);
entry->clipboard_text = NULL;
}
return FALSE;
}
static void
gtk_entry_selection_handler (GtkWidget *widget,
GtkSelectionData *selection_data,
gpointer data)
{
GtkEntry *entry;
gint selection_start_pos;
gint selection_end_pos;
guchar *str;
gint length;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_ENTRY (widget));
entry = GTK_ENTRY (widget);
if (selection_data->selection == GDK_SELECTION_PRIMARY)
{
selection_start_pos = MIN (entry->selection_start_pos, entry->selection_end_pos);
selection_end_pos = MAX (entry->selection_start_pos, entry->selection_end_pos);
str = &entry->text[selection_start_pos];
length = selection_end_pos - selection_start_pos;
}
else /* CLIPBOARD */
{
if (!entry->clipboard_text)
return; /* Refuse */
str = entry->clipboard_text;
length = strlen (entry->clipboard_text);
}
if (selection_data->target == GDK_SELECTION_TYPE_STRING)
{
gtk_selection_data_set (selection_data,
GDK_SELECTION_TYPE_STRING,
8*sizeof(gchar), str, length);
}
else if (selection_data->target == text_atom ||
selection_data->target == ctext_atom)
{
guchar *text;
gchar c;
GdkAtom encoding;
gint format;
gint new_length;
c = str[length];
str[length] = '\0';
gdk_string_to_compound_text (str, &encoding, &format, &text, &new_length);
gtk_selection_data_set (selection_data, encoding, format, text, new_length);
gdk_free_compound_text (text);
str[length] = c;
}
}
static void
gtk_entry_selection_received (GtkWidget *widget,
GtkSelectionData *selection_data)
{
GtkEntry *entry;
gint reselect;
gint old_pos;
gint tmp_pos;
enum {INVALID, STRING, CTEXT} type;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_ENTRY (widget));
entry = GTK_ENTRY (widget);
if (selection_data->type == GDK_TARGET_STRING)
type = STRING;
else if (selection_data->type == ctext_atom)
type = CTEXT;
else
type = INVALID;
if (type == INVALID || selection_data->length < 0)
{
/* avoid infinite loop */
if (selection_data->target != GDK_TARGET_STRING)
gtk_selection_convert (widget, selection_data->selection,
GDK_TARGET_STRING, GDK_CURRENT_TIME);
return;
}
reselect = FALSE;
if ((entry->selection_start_pos != entry->selection_end_pos) &&
(!entry->have_selection ||
(selection_data->selection == clipboard_atom)))
{
reselect = TRUE;
/* Don't want to call gtk_delete_selection here if we are going
* to reclaim the selection to avoid extra server traffic */
if (entry->have_selection)
{
gtk_entry_delete_text (entry,
MIN (entry->selection_start_pos, entry->selection_end_pos),
MAX (entry->selection_start_pos, entry->selection_end_pos));
}
else
gtk_delete_selection (entry);
}
tmp_pos = old_pos = entry->current_pos;
switch (type)
{
case STRING:
selection_data->data[selection_data->length] = 0;
gtk_entry_insert_text (entry, selection_data->data,
strlen (selection_data->data), &tmp_pos);
entry->current_pos = tmp_pos;
break;
case CTEXT:
{
gchar **list;
gint count;
gint i;
count = gdk_text_property_to_text_list (selection_data->type,
selection_data->format,
selection_data->data,
selection_data->length,
&list);
for (i=0; i<count; i++)
{
gtk_entry_insert_text (entry, list[i], strlen (list[i]), &tmp_pos);
entry->current_pos = tmp_pos;
}
if (count > 0)
gdk_free_text_list (list);
}
break;
case INVALID: /* quiet compiler */
break;
}
if (reselect)
gtk_entry_select_region (entry, old_pos, entry->current_pos);
gtk_entry_queue_draw (entry);
}
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;
GtkStateType selected_state;
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);
if (!entry->text)
{
gdk_window_clear (entry->text_area);
if (entry->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->white_gc,
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;
if (entry->selection_start_pos != entry->selection_end_pos)
{
selected_state = GTK_STATE_SELECTED;
if (!entry->have_selection)
selected_state = GTK_STATE_ACTIVE;
selection_start_pos = MIN (entry->selection_start_pos, entry->selection_end_pos);
selection_end_pos = MAX (entry->selection_start_pos, entry->selection_end_pos);
selection_start_xoffset = gdk_text_width (widget->style->font,
entry->text,
selection_start_pos);
selection_end_xoffset = gdk_text_width (widget->style->font,
entry->text,
selection_end_pos);
if (selection_start_pos > 0)
gdk_draw_text (drawable, widget->style->font,
widget->style->fg_gc[GTK_STATE_NORMAL],
-entry->scroll_offset, y,
entry->text, selection_start_pos);
gdk_draw_rectangle (drawable,
widget->style->bg_gc[selected_state],
TRUE,
-entry->scroll_offset + selection_start_xoffset,
0,
selection_end_xoffset - selection_start_xoffset,
-1);
gdk_draw_text (drawable, widget->style->font,
widget->style->fg_gc[selected_state],
-entry->scroll_offset + selection_start_xoffset, y,
entry->text + selection_start_pos,
selection_end_pos - selection_start_pos);
if (selection_end_pos < entry->text_length)
gdk_draw_string (drawable, widget->style->font,
widget->style->fg_gc[GTK_STATE_NORMAL],
-entry->scroll_offset + selection_end_xoffset, y,
entry->text + selection_end_pos);
}
else
{
GdkGCValues values;
gdk_gc_get_values (widget->style->fg_gc[GTK_STATE_NORMAL], &values);
gdk_draw_string (drawable, widget->style->font,
widget->style->fg_gc[GTK_STATE_NORMAL],
-entry->scroll_offset, y,
entry->text);
}
if (entry->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;
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);
if (entry->current_pos > 0 && entry->visible)
xoffset = gdk_text_width (widget->style->font, entry->text, entry->current_pos);
else
xoffset = 0;
xoffset -= entry->scroll_offset;
if (GTK_WIDGET_HAS_FOCUS (widget) &&
(entry->selection_start_pos == entry->selection_end_pos))
gc = widget->style->fg_gc[GTK_STATE_NORMAL];
else
gc = widget->style->white_gc;
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() && entry->ic &&
gdk_ic_get_style (entry->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 (entry->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_position (GtkEntry *entry,
gint x)
{
gint return_val;
gint char_width;
gint sum;
gint i;
gint len;
g_return_val_if_fail (entry != NULL, 0);
g_return_val_if_fail (GTK_IS_ENTRY (entry), 0);
i = 0;
sum = 0;
if (x > sum)
{
for (; i < entry->text_length; i+=len)
{
len = mblen (entry->text+i, MB_CUR_MAX);
/* character not supported in current locale is included */
if (len < 1)
len = 1;
char_width = gdk_text_width (GTK_WIDGET (entry)->style->font,
entry->text + i, len);
if (x < (sum + char_width / 2))
break;
sum += char_width;
}
}
return_val = i;
return return_val;
}
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);
if (entry->current_pos > 0)
xoffset = gdk_text_width (GTK_WIDGET (entry)->style->font, entry->text, entry->current_pos);
else
xoffset = 0;
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);
for (i = previous_size; i < entry->text_size; i++)
entry->text[i] = '\0';
}
static void
gtk_entry_insert_text (GtkEntry *entry,
const gchar *new_text,
gint new_text_length,
gint *position)
{
gchar buf[64];
gchar *text;
g_return_if_fail (entry != NULL);
g_return_if_fail (GTK_IS_ENTRY (entry));
if (new_text_length <= 64)
text = buf;
else
text = g_new (gchar, new_text_length);
strncpy (text, new_text, new_text_length);
gtk_signal_emit (GTK_OBJECT (entry), entry_signals[INSERT_TEXT],
text, new_text_length, position);
gtk_signal_emit (GTK_OBJECT (entry), entry_signals[CHANGED]);
if (new_text_length > 64)
g_free (text);
}
static void
gtk_entry_delete_text (GtkEntry *entry,
gint start_pos,
gint end_pos)
{
g_return_if_fail (entry != NULL);
g_return_if_fail (GTK_IS_ENTRY (entry));
gtk_signal_emit (GTK_OBJECT (entry), entry_signals[DELETE_TEXT],
start_pos, end_pos);
gtk_signal_emit (GTK_OBJECT (entry), entry_signals[CHANGED]);
}
static void
gtk_real_entry_insert_text (GtkEntry *entry,
const gchar *new_text,
gint new_text_length,
gint *position)
{
gchar *text;
gint start_pos;
gint end_pos;
gint last_pos;
gint i;
g_return_if_fail (entry != NULL);
g_return_if_fail (GTK_IS_ENTRY (entry));
/* Make sure we do not exceed the maximum size of the entry. */
if (entry->text_max_length != 0 &&
new_text_length + entry->text_length > entry->text_max_length)
new_text_length = entry->text_max_length - entry->text_length;
/* Don't insert anything, if there was nothing to insert. */
if (new_text_length <= 0)
return;
start_pos = *position;
end_pos = start_pos + new_text_length;
last_pos = new_text_length + entry->text_length;
if (entry->selection_start_pos >= *position)
entry->selection_start_pos += new_text_length;
if (entry->selection_end_pos >= *position)
entry->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];
entry->text_length += new_text_length;
*position = end_pos;
}
static void
gtk_real_entry_delete_text (GtkEntry *entry,
gint start_pos,
gint end_pos)
{
gchar *text;
gint deletion_length;
gint i;
g_return_if_fail (entry != NULL);
g_return_if_fail (GTK_IS_ENTRY (entry));
if (entry->selection_start_pos > start_pos)
entry->selection_start_pos -= MIN(end_pos, entry->selection_start_pos) - start_pos;
if (entry->selection_end_pos > start_pos)
entry->selection_end_pos -= MIN(end_pos, entry->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;
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';
entry->text_length -= deletion_length;
entry->current_pos = start_pos;
}
}
static void
gtk_move_forward_character (GtkEntry *entry)
{
gint len;
if (entry->current_pos < entry->text_length)
{
len = mblen (entry->text+entry->current_pos, MB_CUR_MAX);
entry->current_pos += (len>0)? len:1;
}
if (entry->current_pos > entry->text_length)
entry->current_pos = entry->text_length;
}
static gint
move_backward_character (gchar *str, gint index)
{
gint i;
gint len;
if (index <= 0)
return -1;
for (i=0,len=0; i<index; i+=len)
{
len = mblen (str+i, MB_CUR_MAX);
if (len<1)
return i;
}
return i-len;
}
static void
gtk_move_backward_character (GtkEntry *entry)
{
/* this routine is correct only if string is state-independent-encoded */
if (0 < entry->current_pos)
{
entry->current_pos = move_backward_character (entry->text,
entry->current_pos);
if (entry->current_pos < 0)
entry->current_pos = 0;
}
}
static void
gtk_move_forward_word (GtkEntry *entry)
{
gchar *text;
gint i;
wchar_t c;
gint len;
if (entry->text)
{
text = entry->text;
i = entry->current_pos;
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;
}
entry->current_pos = i;
if (entry->current_pos > entry->text_length)
entry->current_pos = entry->text_length;
}
}
static void
gtk_move_backward_word (GtkEntry *entry)
{
gchar *text;
gint i;
wchar_t c;
gint len;
if (entry->text)
{
text = entry->text;
i=move_backward_character(text, entry->current_pos);
if (i < 0) /* Per */
{
entry->selection_start_pos = 0;
entry->selection_end_pos = 0;
return;
}
len = mbtowc (&c, text+i, MB_CUR_MAX);
if (!iswalnum(c))
for (; i >= 0; i=move_backward_character(text, i))
{
len = mbtowc (&c, text+i, MB_CUR_MAX);
if (iswalnum(c))
break;
}
for (; i >= 0; i=move_backward_character(text, i))
{
len = mbtowc (&c, text+i, MB_CUR_MAX);
if (!iswalnum(c))
{
i += len;
break;
}
}
if (i < 0)
i = 0;
entry->current_pos = i;
}
}
static void
gtk_move_beginning_of_line (GtkEntry *entry)
{
entry->current_pos = 0;
}
static void
gtk_move_end_of_line (GtkEntry *entry)
{
entry->current_pos = entry->text_length;
}
static void
gtk_delete_forward_character (GtkEntry *entry)
{
gint old_pos;
old_pos = entry->current_pos;
gtk_move_forward_character (entry);
gtk_entry_delete_text (entry, old_pos, entry->current_pos);
}
static void
gtk_delete_backward_character (GtkEntry *entry)
{
gint old_pos;
old_pos = entry->current_pos;
gtk_move_backward_character (entry);
gtk_entry_delete_text (entry, entry->current_pos, old_pos);
}
static void
gtk_delete_forward_word (GtkEntry *entry)
{
gint old_pos;
old_pos = entry->current_pos;
gtk_move_forward_word (entry);
gtk_entry_delete_text (entry, old_pos, entry->current_pos);
}
static void
gtk_delete_backward_word (GtkEntry *entry)
{
gint old_pos;
old_pos = entry->current_pos;
gtk_move_backward_word (entry);
gtk_entry_delete_text (entry, entry->current_pos, old_pos);
}
static void
gtk_delete_line (GtkEntry *entry)
{
gtk_entry_delete_text (entry, 0, entry->text_length);
}
static void
gtk_delete_to_line_end (GtkEntry *entry)
{
gtk_entry_delete_text (entry, entry->current_pos, entry->text_length);
}
static void
gtk_delete_selection (GtkEntry *entry)
{
if (entry->selection_start_pos != entry->selection_end_pos)
gtk_entry_delete_text (entry,
MIN (entry->selection_start_pos, entry->selection_end_pos),
MAX (entry->selection_start_pos, entry->selection_end_pos));
entry->selection_start_pos = 0;
entry->selection_end_pos = 0;
if (entry->have_selection)
{
entry->have_selection = FALSE;
if (gdk_selection_owner_get (GDK_SELECTION_PRIMARY) == GTK_WIDGET (entry)->window)
gtk_selection_owner_set (NULL, GDK_SELECTION_PRIMARY, GDK_CURRENT_TIME);
}
}
static void
gtk_select_word (GtkEntry *entry)
{
gint start_pos;
gint end_pos;
gtk_move_backward_word (entry);
start_pos = entry->current_pos;
end_pos = entry->current_pos;
gtk_move_forward_word (entry);
end_pos = entry->current_pos;
gtk_entry_select_region (entry, start_pos, end_pos);
}
static void
gtk_select_line (GtkEntry *entry)
{
gtk_entry_select_region (entry, 0, entry->text_length);
entry->current_pos = entry->selection_end_pos;
}
void
gtk_entry_select_region (GtkEntry *entry,
gint start,
gint end)
{
entry->have_selection = TRUE;
entry->selection_start_pos = start;
entry->selection_end_pos = end;
gtk_widget_queue_draw (GTK_WIDGET (entry));
}
static void
gtk_entry_cut_clipboard (GtkEntry *entry, GdkEventKey *event)
{
gtk_entry_copy_clipboard (entry, event);
gtk_delete_selection (entry);
gtk_entry_queue_draw (entry);
}
static void
gtk_entry_copy_clipboard (GtkEntry *entry, GdkEventKey *event)
{
gint selection_start_pos;
gint selection_end_pos;
selection_start_pos = MIN (entry->selection_start_pos, entry->selection_end_pos);
selection_end_pos = MAX (entry->selection_start_pos, entry->selection_end_pos);
if (selection_start_pos != selection_end_pos)
{
if (gtk_selection_owner_set (GTK_WIDGET (entry),
clipboard_atom,
event->time))
{
char c;
c = entry->text[selection_end_pos];
entry->text[selection_end_pos] = 0;
entry->clipboard_text = g_strdup (entry->text + selection_start_pos);
entry->text[selection_end_pos] = c;
}
}
}
static void
gtk_entry_paste_clipboard (GtkEntry *entry, GdkEventKey *event)
{
gtk_selection_convert (GTK_WIDGET(entry),
clipboard_atom, ctext_atom, event->time);
}
void
gtk_entry_set_max_length (GtkEntry *entry, guint16 max)
{
g_return_if_fail (entry != NULL);
g_return_if_fail (GTK_IS_ENTRY (entry));
entry->text_max_length = max;
}
Reference in New Issue View Git Blame Copy Permalink