/* * Copyright (C) 2009-2010, AdaCore */ /* GTK - The GIMP Toolkit * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ /* * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS * file for a list of people on the GTK+ Team. See the ChangeLog * files for a list of changes. These files are distributed with * GTK+ at ftp://ftp.gtk.org/pub/gtk/. */ //#include #include #include #include #include #include "gtkitementry.h" #if GTK_CHECK_VERSION (2,17,4) #define HAVE_GTKENTRYBUFFER 1 #endif #if !GTK_CHECK_VERSION (2,14,0) static guint16 gtk_entry_get_text_length (GtkEntry *entry) { return entry->text_length; } #endif #define MIN_ENTRY_WIDTH 150 #define DRAW_TIMEOUT 20 #define INNER_BORDER 0 /* Initial size of buffer, in bytes */ #define MIN_SIZE 16 /* Maximum size of text buffer, in bytes */ #define MAX_SIZE G_MAXUSHORT typedef enum { CURSOR_STANDARD, CURSOR_DND } CursorType; /* GObject, GtkObject methods */ static void gtk_item_entry_class_init (GtkItemEntryClass *klass); static void gtk_item_entry_init (GtkItemEntry *entry); static void gtk_item_entry_editable_init (GtkEditableClass *iface); /* GtkWidget methods */ static void gtk_entry_realize (GtkWidget *widget); static void gtk_entry_size_request (GtkWidget *widget, GtkRequisition *requisition); static void gtk_entry_size_allocate (GtkWidget *widget, GtkAllocation *allocation); static void gtk_entry_draw_frame (GtkWidget *widget); static gint gtk_entry_expose (GtkWidget *widget, GdkEventExpose *event); static void gtk_entry_grab_focus (GtkWidget *widget); static void gtk_entry_style_set (GtkWidget *widget, GtkStyle *previous_style); static void gtk_entry_direction_changed (GtkWidget *widget, GtkTextDirection previous_dir); static void gtk_entry_state_changed (GtkWidget *widget, GtkStateType previous_state); /* GtkEditable method implementations */ 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_real_set_position (GtkEditable *editable, gint position); static gint gtk_entry_get_position (GtkEditable *editable); /* Default signal handlers */ static void gtk_entry_real_insert_text (GtkEditable *editable, const gchar *new_text, gint new_text_length, gint *position); static void gtk_entry_real_delete_text (GtkEditable *editable, gint start_pos, gint end_pos); static void gtk_entry_move_cursor (GtkEntry *entry, GtkMovementStep step, gint count, gboolean extend_selection); static void gtk_entry_insert_at_cursor (GtkEntry *entry, const gchar *str); static void gtk_entry_delete_from_cursor (GtkEntry *entry, GtkDeleteType type, gint count); /* IM Context Callbacks */ static void gtk_entry_commit_cb (GtkIMContext *context, const gchar *str, GtkEntry *entry); static void gtk_entry_preedit_changed_cb (GtkIMContext *context, GtkEntry *entry); static gboolean gtk_entry_retrieve_surrounding_cb (GtkIMContext *context, GtkEntry *entry); static gboolean gtk_entry_delete_surrounding_cb (GtkIMContext *context, gint offset, gint n_chars, GtkEntry *entry); /* Internal routines */ static void gtk_entry_enter_text (GtkEntry *entry, const gchar *str); static void gtk_entry_set_positions (GtkEntry *entry, gint current_pos, gint selection_bound); static void gtk_entry_draw_text (GtkEntry *entry); static void gtk_entry_draw_cursor (GtkEntry *entry, CursorType type); static PangoLayout *gtk_entry_ensure_layout (GtkEntry *entry, gboolean include_preedit); static void gtk_entry_queue_draw (GtkEntry *entry); static void gtk_entry_reset_im_context_extra (GtkEntry *entry); static void gtk_entry_recompute (GtkEntry *entry); static void gtk_entry_get_cursor_locations (GtkEntry *entry, CursorType type, gint *strong_x, gint *weak_x); static void gtk_entry_adjust_scroll (GtkEntry *entry); static gint gtk_entry_move_visually (GtkEntry *editable, gint start, gint count); static gint gtk_entry_move_logically (GtkEntry *entry, gint start, gint count); static gint gtk_entry_move_forward_word (GtkEntry *entry, gint start); static gint gtk_entry_move_backward_word (GtkEntry *entry, gint start); static void gtk_entry_delete_whitespace (GtkEntry *entry); static char * gtk_entry_get_public_chars (GtkEntry *entry, gint start, gint end); static void gtk_entry_update_primary_selection (GtkEntry *entry); static void gtk_entry_state_changed (GtkWidget *widget, GtkStateType previous_state); static void gtk_entry_check_cursor_blink (GtkEntry *entry); static void gtk_entry_pend_cursor_blink (GtkEntry *entry); static void get_text_area_size (GtkEntry *entry, gint *x, gint *y, gint *width, gint *height); static void get_widget_window_size (GtkEntry *entry, gint *x, gint *y, gint *width, gint *height); static GtkEntryClass *parent_class = NULL; GtkType gtk_item_entry_get_type (void) { static GtkType item_entry_type = 0; if (!item_entry_type) { static const GtkTypeInfo item_entry_info = { "GtkItemEntry", sizeof (GtkItemEntry), sizeof (GtkItemEntryClass), (GtkClassInitFunc) gtk_item_entry_class_init, (GtkObjectInitFunc) gtk_item_entry_init, /* reserved_1 */ NULL, /* reserved_2 */ NULL, (GtkClassInitFunc) NULL, }; static const GInterfaceInfo item_editable_info = { (GInterfaceInitFunc) gtk_item_entry_editable_init, /* interface_init */ NULL, /* interface_finalize */ NULL /* interface_data */ }; item_entry_type = gtk_type_unique (GTK_TYPE_ENTRY, &item_entry_info); g_type_add_interface_static (item_entry_type, GTK_TYPE_EDITABLE, &item_editable_info); } return item_entry_type; } static void gtk_item_entry_class_init (GtkItemEntryClass *class) { GtkObjectClass *object_class; GtkWidgetClass *widget_class; GtkEntryClass *entry_class; object_class = (GtkObjectClass*) class; widget_class = (GtkWidgetClass*) class; parent_class = gtk_type_class (GTK_TYPE_ENTRY); entry_class = (GtkEntryClass *) class; widget_class->realize = gtk_entry_realize; widget_class->size_request = gtk_entry_size_request; widget_class->size_allocate = gtk_entry_size_allocate; widget_class->expose_event = gtk_entry_expose; widget_class->grab_focus = gtk_entry_grab_focus; widget_class->style_set = gtk_entry_style_set; widget_class->direction_changed = gtk_entry_direction_changed; widget_class->state_changed = gtk_entry_state_changed; entry_class->move_cursor = gtk_entry_move_cursor; entry_class->insert_at_cursor = gtk_entry_insert_at_cursor; entry_class->delete_from_cursor = gtk_entry_delete_from_cursor; } static void gtk_item_entry_editable_init (GtkEditableClass *iface) { iface->do_insert_text = gtk_entry_insert_text; iface->do_delete_text = gtk_entry_delete_text; iface->insert_text = gtk_entry_real_insert_text; iface->delete_text = gtk_entry_real_delete_text; iface->set_position = gtk_entry_real_set_position; iface->get_position = gtk_entry_get_position; } static void gtk_item_entry_init (GtkItemEntry *entry) { entry->justification = GTK_JUSTIFY_LEFT; entry->text_max_size = 0; GTK_ENTRY(entry)->has_frame = FALSE; g_object_unref(G_OBJECT(GTK_ENTRY(entry)->im_context)); GTK_ENTRY(entry)->im_context = gtk_im_multicontext_new (); g_signal_connect (G_OBJECT (GTK_ENTRY(entry)->im_context), "commit", G_CALLBACK (gtk_entry_commit_cb), entry); g_signal_connect (G_OBJECT (GTK_ENTRY(entry)->im_context), "preedit_changed", G_CALLBACK (gtk_entry_preedit_changed_cb), entry); g_signal_connect (G_OBJECT (GTK_ENTRY(entry)->im_context), "retrieve_surrounding", G_CALLBACK (gtk_entry_retrieve_surrounding_cb), entry); g_signal_connect (G_OBJECT (GTK_ENTRY(entry)->im_context), "delete_surrounding", G_CALLBACK (gtk_entry_delete_surrounding_cb), entry); } static void gtk_entry_realize (GtkWidget *widget) { GtkEntry *entry; GtkEditable *editable; GdkWindowAttr attributes; gint attributes_mask; GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED); entry = GTK_ENTRY (widget); editable = GTK_EDITABLE (widget); attributes.window_type = GDK_WINDOW_CHILD; get_widget_window_size (entry, &attributes.x, &attributes.y, &attributes.width, &attributes.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_POINTER_MOTION_MASK | GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_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); get_text_area_size (entry, &attributes.x, &attributes.y, &attributes.width, &attributes.height); attributes.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); gdk_cursor_unref (attributes.cursor); widget->style = gtk_style_attach (widget->style, widget->window); gdk_window_set_background (widget->window, &widget->style->bg[GTK_WIDGET_STATE(widget)]); gdk_window_set_background (entry->text_area, &widget->style->bg[GTK_WIDGET_STATE (widget)]); gdk_window_show (entry->text_area); gtk_im_context_set_client_window (entry->im_context, entry->text_area); gtk_entry_adjust_scroll (entry); } static void get_borders (GtkEntry *entry, gint *xborder, gint *yborder) { GtkWidget *widget = GTK_WIDGET (entry); gint focus_width; gboolean interior_focus; gtk_widget_style_get (widget, "interior-focus", &interior_focus, "focus-line-width", &focus_width, NULL); if (entry->has_frame) { *xborder = widget->style->xthickness; *yborder = widget->style->ythickness; } else { *xborder = 0; *yborder = 0; } if (!interior_focus) { *xborder += focus_width; *yborder += focus_width; } } static void gtk_entry_size_request (GtkWidget *widget, GtkRequisition *requisition) { GtkEntry *entry = GTK_ENTRY (widget); PangoFontMetrics *metrics; gint xborder, yborder; PangoContext *context; context = gtk_widget_get_pango_context (widget); metrics = pango_context_get_metrics (context, widget->style->font_desc, pango_context_get_language (context)); entry->ascent = pango_font_metrics_get_ascent (metrics); entry->descent = pango_font_metrics_get_descent (metrics); get_borders (entry, &xborder, &yborder); xborder += INNER_BORDER; yborder += INNER_BORDER; if (entry->width_chars < 0) requisition->width = MIN_ENTRY_WIDTH + xborder * 2; else { gint char_width = pango_font_metrics_get_approximate_char_width (metrics); requisition->width = PANGO_PIXELS (char_width) * entry->width_chars + xborder * 2; } requisition->height = PANGO_PIXELS (entry->ascent + entry->descent) + yborder * 2; pango_font_metrics_unref (metrics); } static void get_text_area_size (GtkEntry *entry, gint *x, gint *y, gint *width, gint *height) { gint xborder, yborder; GtkRequisition requisition; GtkWidget *widget = GTK_WIDGET (entry); gtk_widget_get_child_requisition (widget, &requisition); get_borders (entry, &xborder, &yborder); if (x) *x = xborder; if (y) *y = yborder; if (width) *width = GTK_WIDGET (entry)->allocation.width - xborder * 2; if (height) *height = requisition.height - yborder * 2; } static void get_widget_window_size (GtkEntry *entry, gint *x, gint *y, gint *width, gint *height) { GtkRequisition requisition; GtkWidget *widget = GTK_WIDGET (entry); gtk_widget_get_child_requisition (widget, &requisition); if (x) *x = widget->allocation.x; if (y) { if (entry->is_cell_renderer) *y = widget->allocation.y; else *y = widget->allocation.y + (widget->allocation.height - requisition.height) / 2; } if (width) *width = widget->allocation.width; if (height) { if (entry->is_cell_renderer) *height = widget->allocation.height; else *height = requisition.height; } } static void gtk_entry_size_allocate (GtkWidget *widget, GtkAllocation *allocation) { GtkEntry *entry = GTK_ENTRY (widget); GtkItemEntry *ientry = GTK_ITEM_ENTRY (widget); if(ientry->text_max_size > 0) allocation->width = MIN(ientry->text_max_size, allocation->width); widget->allocation = *allocation; if (GTK_WIDGET_REALIZED (widget)) { /* We call gtk_widget_get_child_requisition, since we want (for * backwards compatibility reasons) the realization here to * be affected by the usize of the entry, if set */ gint x, y, width, height; get_widget_window_size (entry, &x, &y, &width, &height); gdk_window_move_resize (widget->window, allocation->x, allocation->y, allocation->width, allocation->height); get_text_area_size (entry, &x, &y, &width, &height); gdk_window_move_resize (entry->text_area, 0, allocation->height - height, allocation->width, height); gtk_entry_recompute (entry); } } static void gtk_entry_draw_frame (GtkWidget *widget) { } static gint gtk_entry_expose (GtkWidget *widget, GdkEventExpose *event) { GtkEntry *entry = GTK_ENTRY (widget); if (widget->window == event->window) gtk_entry_draw_frame (widget); else if (entry->text_area == event->window) { gint area_width, area_height; get_text_area_size (entry, NULL, NULL, &area_width, &area_height); gdk_draw_rectangle (entry->text_area, widget->style->bg_gc[GTK_WIDGET_STATE(widget)], TRUE, 0, 0, area_width, area_height); if ((entry->visible || entry->invisible_char != 0) && GTK_WIDGET_HAS_FOCUS (widget) && entry->selection_bound == entry->current_pos && entry->cursor_visible) gtk_entry_draw_cursor (GTK_ENTRY (widget), CURSOR_STANDARD); if (entry->dnd_position != -1) gtk_entry_draw_cursor (GTK_ENTRY (widget), CURSOR_DND); gtk_entry_draw_text (GTK_ENTRY (widget)); } return FALSE; } static void gtk_entry_grab_focus (GtkWidget *widget) { GtkEntry *entry = GTK_ENTRY (widget); gboolean select_on_focus; GTK_WIDGET_CLASS (parent_class)->grab_focus (widget); g_object_get (G_OBJECT (gtk_settings_get_default ()), "gtk-entry-select-on-focus", &select_on_focus, NULL); if (select_on_focus && entry->editable && !entry->in_click) gtk_editable_select_region (GTK_EDITABLE (widget), 0, -1); } static void gtk_entry_direction_changed (GtkWidget *widget, GtkTextDirection previous_dir) { GtkEntry *entry = GTK_ENTRY (widget); gtk_entry_recompute (entry); GTK_WIDGET_CLASS (parent_class)->direction_changed (widget, previous_dir); } static void gtk_entry_state_changed (GtkWidget *widget, GtkStateType previous_state) { GtkEntry *entry = GTK_ENTRY (widget); if (GTK_WIDGET_REALIZED (widget)) { gdk_window_set_background (widget->window, &widget->style->bg[GTK_WIDGET_STATE (widget)]); gdk_window_set_background (entry->text_area, &widget->style->bg[GTK_WIDGET_STATE (widget)]); } if (!GTK_WIDGET_IS_SENSITIVE (widget)) { /* Clear any selection */ gtk_editable_select_region (GTK_EDITABLE (entry), entry->current_pos, entry->current_pos); } gtk_widget_queue_clear (widget); } /* GtkEditable method implementations */ static void gtk_entry_insert_text (GtkEditable *editable, const gchar *new_text, gint new_text_length, gint *position) { #if HAVE_GTKENTRYBUFFER g_object_ref (editable); /* * The incoming text may a password or other secret. We make sure * not to copy it into temporary buffers. */ g_signal_emit_by_name (editable, "insert-text", new_text, new_text_length, position); g_object_unref (editable); #else /* !HAVE_GTKENTRYBUFFER */ GtkEntry *entry = GTK_ENTRY (editable); gchar buf[64]; gchar *text; if (*position < 0 || *position > entry->text_length) *position = entry->text_length; g_object_ref (G_OBJECT (editable)); if (new_text_length <= 63) text = buf; else text = g_new (gchar, new_text_length + 1); text[new_text_length] = '\0'; strncpy (text, new_text, new_text_length); g_signal_emit_by_name (editable, "insert_text", text, new_text_length, position); if (new_text_length > 63) g_free (text); g_object_unref (G_OBJECT (editable)); #endif /* !HAVE_GTKENTRYBUFFER */ } static void gtk_entry_delete_text (GtkEditable *editable, gint start_pos, gint end_pos) { #if HAVE_GTKENTRYBUFFER g_object_ref (editable); g_signal_emit_by_name (editable, "delete-text", start_pos, end_pos); g_object_unref (editable); #else /* !HAVE_GTKENTRYBUFFER */ GtkEntry *entry = GTK_ENTRY (editable); if (end_pos < 0 || end_pos > entry->text_length) end_pos = entry->text_length; if (start_pos < 0) start_pos = 0; if (start_pos > end_pos) start_pos = end_pos; g_object_ref (G_OBJECT (editable)); g_signal_emit_by_name (editable, "delete_text", start_pos, end_pos); g_object_unref (G_OBJECT (editable)); #endif /* !HAVE_GTKENTRYBUFFER */ } static void gtk_entry_style_set (GtkWidget *widget, GtkStyle *previous_style) { GtkEntry *entry = GTK_ENTRY (widget); if (previous_style && GTK_WIDGET_REALIZED (widget)) { gtk_entry_recompute (entry); gdk_window_set_background (widget->window, &widget->style->bg[GTK_WIDGET_STATE(widget)]); gdk_window_set_background (entry->text_area, &widget->style->bg[GTK_WIDGET_STATE (widget)]); } } static void gtk_entry_real_set_position (GtkEditable *editable, gint position) { GtkEntry *entry = GTK_ENTRY (editable); guint length; length = gtk_entry_get_text_length (entry); if (position < 0 || position > length) position = length; if (position != entry->current_pos || position != entry->selection_bound) { gtk_entry_reset_im_context_extra (entry); gtk_entry_set_positions (entry, position, position); } } static gint gtk_entry_get_position (GtkEditable *editable) { return GTK_ENTRY (editable)->current_pos; } /* Default signal handlers */ static void gtk_entry_real_insert_text (GtkEditable *editable, const gchar *new_text, gint new_text_length, gint *position) { #if HAVE_GTKENTRYBUFFER GtkEntry *entry = GTK_ENTRY (editable); GtkEntryBuffer *buffer = gtk_entry_get_buffer (entry); guint n_inserted; gint n_chars; n_chars = g_utf8_strlen (new_text, new_text_length); /* * The actual insertion into the buffer. This will end up firing the * following signal handlers: buffer_inserted_text(), buffer_notify_display_text(), * buffer_notify_text(), buffer_notify_length() */ n_inserted = gtk_entry_buffer_insert_text (buffer, *position, new_text, n_chars); if (n_inserted != n_chars) gtk_widget_error_bell (GTK_WIDGET (editable)); *position += n_inserted; #else /* !HAVE_GTKENTRYBUFFER */ gint index; gint n_chars; GtkEntry *entry = GTK_ENTRY (editable); if (new_text_length < 0) new_text_length = strlen (new_text); n_chars = g_utf8_strlen (new_text, new_text_length); if (entry->text_max_length > 0 && n_chars + entry->text_length > entry->text_max_length) { gdk_beep (); n_chars = entry->text_max_length - entry->text_length; new_text_length = g_utf8_offset_to_pointer (new_text, n_chars) - new_text; } if (new_text_length + entry->n_bytes + 1 > entry->text_size) { while (new_text_length + entry->n_bytes + 1 > entry->text_size) { if (entry->text_size == 0) entry->text_size = MIN_SIZE; else { if (2 * (guint)entry->text_size < MAX_SIZE && 2 * (guint)entry->text_size > entry->text_size) entry->text_size *= 2; else { entry->text_size = MAX_SIZE; if (new_text_length > (gint)entry->text_size - (gint)entry->n_bytes - 1) { new_text_length = (gint)entry->text_size - (gint)entry->n_bytes - 1; new_text_length = g_utf8_find_prev_char (new_text, new_text + new_text_length + 1) - new_text; n_chars = g_utf8_strlen (new_text, new_text_length); } break; } } } entry->text = g_realloc (entry->text, entry->text_size); } index = g_utf8_offset_to_pointer (entry->text, *position) - entry->text; g_memmove (entry->text + index + new_text_length, entry->text + index, entry->n_bytes - index); memcpy (entry->text + index, new_text, new_text_length); entry->n_bytes += new_text_length; entry->text_length += n_chars; /* NUL terminate for safety and convenience */ entry->text[entry->n_bytes] = '\0'; if (entry->current_pos > *position) entry->current_pos += n_chars; if (entry->selection_bound > *position) entry->selection_bound += n_chars; *position += n_chars; gtk_entry_recompute (entry); g_signal_emit_by_name (editable, "changed"); g_object_notify (G_OBJECT (editable), "text"); #endif /* !HAVE_GTKENTRYBUFFER */ } static void gtk_entry_real_delete_text (GtkEditable *editable, gint start_pos, gint end_pos) { #ifdef HAVE_GTKENTRYBUFFER GtkEntry *entry = GTK_ENTRY (editable); GtkEntryBuffer *buffer = gtk_entry_get_buffer (entry); /* * The actual deletion from the buffer. This will end up firing the * following signal handlers: buffer_deleted_text(), buffer_notify_display_text(), * buffer_notify_text(), buffer_notify_length() */ gtk_entry_buffer_delete_text (buffer, start_pos, end_pos - start_pos); #else /* !HAVE_GTKENTRYBUFFER */ GtkEntry *entry = GTK_ENTRY (editable); if (start_pos < 0) start_pos = 0; if (end_pos < 0 || end_pos > entry->text_length) end_pos = entry->text_length; if (start_pos < end_pos) { gint start_index = g_utf8_offset_to_pointer (entry->text, start_pos) - entry->text; gint end_index = g_utf8_offset_to_pointer (entry->text, end_pos) - entry->text; g_memmove (entry->text + start_index, entry->text + end_index, entry->n_bytes + 1 - end_index); entry->text_length -= (end_pos - start_pos); entry->n_bytes -= (end_index - start_index); if (entry->current_pos > start_pos) entry->current_pos -= MIN (entry->current_pos, end_pos) - start_pos; if (entry->selection_bound > start_pos) entry->selection_bound -= MIN (entry->selection_bound, end_pos) - start_pos; /* We might have deleted the selection */ gtk_entry_update_primary_selection (entry); gtk_entry_recompute (entry); g_signal_emit_by_name (editable, "changed"); g_object_notify (G_OBJECT (editable), "text"); } #endif /* !HAVE_GTKENTRYBUFFER */ } /* Compute the X position for an offset that corresponds to the "more important * cursor position for that offset. We use this when trying to guess to which * end of the selection we should go to when the user hits the left or * right arrow key. */ static gint get_better_cursor_x (GtkEntry *entry, gint offset) { GtkTextDirection keymap_direction = (gdk_keymap_get_direction (gdk_keymap_get_default ()) == PANGO_DIRECTION_LTR) ? GTK_TEXT_DIR_LTR : GTK_TEXT_DIR_RTL; GtkTextDirection widget_direction = gtk_widget_get_direction (GTK_WIDGET (entry)); gboolean split_cursor; PangoLayout *layout = gtk_entry_ensure_layout (entry, TRUE); const char *text = gtk_entry_get_text (entry); gint index = g_utf8_offset_to_pointer (text, offset) - text; PangoRectangle strong_pos, weak_pos; g_object_get (gtk_widget_get_settings (GTK_WIDGET (entry)), "gtk-split-cursor", &split_cursor, NULL); pango_layout_get_cursor_pos (layout, index, &strong_pos, &weak_pos); if (split_cursor) return strong_pos.x / PANGO_SCALE; else return (keymap_direction == widget_direction) ? strong_pos.x / PANGO_SCALE : weak_pos.x / PANGO_SCALE; } static void gtk_entry_move_cursor (GtkEntry *entry, GtkMovementStep step, gint count, gboolean extend_selection) { gint new_pos = entry->current_pos; gtk_entry_reset_im_context_extra (entry); if (entry->current_pos != entry->selection_bound && !extend_selection) { /* If we have a current selection and aren't extending it, move to the * start/or end of the selection as appropriate */ switch (step) { case GTK_MOVEMENT_VISUAL_POSITIONS: { gint current_x = get_better_cursor_x (entry, entry->current_pos); gint bound_x = get_better_cursor_x (entry, entry->selection_bound); if (count < 0) new_pos = current_x < bound_x ? entry->current_pos : entry->selection_bound; else new_pos = current_x > bound_x ? entry->current_pos : entry->selection_bound; break; } case GTK_MOVEMENT_LOGICAL_POSITIONS: case GTK_MOVEMENT_WORDS: if (count < 0) new_pos = MIN (entry->current_pos, entry->selection_bound); else new_pos = MAX (entry->current_pos, entry->selection_bound); break; case GTK_MOVEMENT_DISPLAY_LINE_ENDS: case GTK_MOVEMENT_PARAGRAPH_ENDS: case GTK_MOVEMENT_BUFFER_ENDS: new_pos = count < 0 ? 0 : gtk_entry_get_text_length (entry); break; case GTK_MOVEMENT_DISPLAY_LINES: case GTK_MOVEMENT_PARAGRAPHS: case GTK_MOVEMENT_PAGES: break; default: break; } } else { switch (step) { case GTK_MOVEMENT_LOGICAL_POSITIONS: new_pos = gtk_entry_move_logically (entry, new_pos, count); break; case GTK_MOVEMENT_VISUAL_POSITIONS: new_pos = gtk_entry_move_visually (entry, new_pos, count); break; case GTK_MOVEMENT_WORDS: while (count > 0) { new_pos = gtk_entry_move_forward_word (entry, new_pos); count--; } while (count < 0) { new_pos = gtk_entry_move_backward_word (entry, new_pos); count++; } break; case GTK_MOVEMENT_DISPLAY_LINE_ENDS: case GTK_MOVEMENT_PARAGRAPH_ENDS: case GTK_MOVEMENT_BUFFER_ENDS: new_pos = count < 0 ? 0 : gtk_entry_get_text_length (entry); break; case GTK_MOVEMENT_DISPLAY_LINES: case GTK_MOVEMENT_PARAGRAPHS: case GTK_MOVEMENT_PAGES: break; default: break; } } if (extend_selection) gtk_editable_select_region (GTK_EDITABLE (entry), entry->selection_bound, new_pos); else gtk_editable_set_position (GTK_EDITABLE (entry), new_pos); gtk_entry_pend_cursor_blink (entry); } static void gtk_entry_insert_at_cursor (GtkEntry *entry, const gchar *str) { GtkEditable *editable = GTK_EDITABLE (entry); gint pos = entry->current_pos; if (entry->editable) { gtk_entry_reset_im_context_extra (entry); gtk_editable_insert_text (editable, str, -1, &pos); gtk_editable_set_position (editable, pos); } } static void gtk_entry_delete_from_cursor (GtkEntry *entry, GtkDeleteType type, gint count) { GtkEditable *editable = GTK_EDITABLE (entry); gint start_pos = entry->current_pos; gint end_pos = entry->current_pos; gtk_entry_reset_im_context_extra (entry); if (!entry->editable) return; if (entry->selection_bound != entry->current_pos) { gtk_editable_delete_selection (editable); return; } switch (type) { case GTK_DELETE_CHARS: end_pos = gtk_entry_move_logically (entry, entry->current_pos, count); gtk_editable_delete_text (editable, MIN (start_pos, end_pos), MAX (start_pos, end_pos)); break; case GTK_DELETE_WORDS: if (count < 0) { /* Move to end of current word, or if not on a word, end of previous word */ end_pos = gtk_entry_move_backward_word (entry, end_pos); end_pos = gtk_entry_move_forward_word (entry, end_pos); } else if (count > 0) { /* Move to beginning of current word, or if not on a word, begining of next word */ start_pos = gtk_entry_move_forward_word (entry, start_pos); start_pos = gtk_entry_move_backward_word (entry, start_pos); } /* Fall through */ case GTK_DELETE_WORD_ENDS: while (count < 0) { start_pos = gtk_entry_move_backward_word (entry, start_pos); count++; } while (count > 0) { end_pos = gtk_entry_move_forward_word (entry, end_pos); count--; } gtk_editable_delete_text (editable, start_pos, end_pos); break; case GTK_DELETE_DISPLAY_LINE_ENDS: case GTK_DELETE_PARAGRAPH_ENDS: if (count < 0) gtk_editable_delete_text (editable, 0, entry->current_pos); else gtk_editable_delete_text (editable, entry->current_pos, -1); break; case GTK_DELETE_DISPLAY_LINES: case GTK_DELETE_PARAGRAPHS: gtk_editable_delete_text (editable, 0, -1); break; case GTK_DELETE_WHITESPACE: gtk_entry_delete_whitespace (entry); break; } gtk_entry_pend_cursor_blink (entry); } /* IM Context Callbacks */ static void gtk_entry_commit_cb (GtkIMContext *context, const gchar *str, GtkEntry *entry) { gtk_entry_enter_text (entry, str); } static void gtk_entry_preedit_changed_cb (GtkIMContext *context, GtkEntry *entry) { gchar *preedit_string; gint cursor_pos; gtk_im_context_get_preedit_string (entry->im_context, &preedit_string, NULL, &cursor_pos); entry->preedit_length = strlen (preedit_string); cursor_pos = CLAMP (cursor_pos, 0, g_utf8_strlen (preedit_string, -1)); entry->preedit_cursor = cursor_pos; g_free (preedit_string); gtk_entry_recompute (entry); } static gboolean gtk_entry_retrieve_surrounding_cb (GtkIMContext *context, GtkEntry *entry) { const char *text = gtk_entry_get_text (entry); size_t n_bytes = strlen (text); gtk_im_context_set_surrounding (context, text, n_bytes, g_utf8_offset_to_pointer (text, entry->current_pos) - text); return TRUE; } static gboolean gtk_entry_delete_surrounding_cb (GtkIMContext *slave, gint offset, gint n_chars, GtkEntry *entry) { gtk_editable_delete_text (GTK_EDITABLE (entry), entry->current_pos + offset, entry->current_pos + offset + n_chars); return TRUE; } /* Internal functions */ /* Used for im_commit_cb and inserting Unicode chars */ static void gtk_entry_enter_text (GtkEntry *entry, const gchar *str) { GtkEditable *editable = GTK_EDITABLE (entry); gint tmp_pos; if (gtk_editable_get_selection_bounds (editable, NULL, NULL)) gtk_editable_delete_selection (editable); else { if (entry->overwrite_mode) gtk_entry_delete_from_cursor (entry, GTK_DELETE_CHARS, 1); } tmp_pos = entry->current_pos; gtk_editable_insert_text (editable, str, strlen (str), &tmp_pos); gtk_editable_set_position (editable, tmp_pos); } /* All changes to entry->current_pos and entry->selection_bound * should go through this function. */ static void gtk_entry_set_positions (GtkEntry *entry, gint current_pos, gint selection_bound) { gboolean changed = FALSE; g_object_freeze_notify (G_OBJECT (entry)); if (current_pos != -1 && entry->current_pos != current_pos) { entry->current_pos = current_pos; changed = TRUE; g_object_notify (G_OBJECT (entry), "cursor_position"); } if (selection_bound != -1 && entry->selection_bound != selection_bound) { entry->selection_bound = selection_bound; changed = TRUE; g_object_notify (G_OBJECT (entry), "selection_bound"); } g_object_thaw_notify (G_OBJECT (entry)); if (changed) gtk_entry_recompute (entry); } static void gtk_entry_reset_layout (GtkEntry *entry) { if (entry->cached_layout) { g_object_unref (G_OBJECT (entry->cached_layout)); entry->cached_layout = NULL; } } static void update_im_cursor_location (GtkEntry *entry) { GdkRectangle area; gint strong_x; gint strong_xoffset; gint x, y, area_width, area_height; gtk_entry_get_cursor_locations (entry, CURSOR_STANDARD, &strong_x, NULL) ; get_text_area_size (entry, &x, &y, &area_width, &area_height); strong_xoffset = strong_x - entry->scroll_offset; if (strong_xoffset < 0) { strong_xoffset = 0; } else if (strong_xoffset > area_width) { strong_xoffset = area_width; } area.x = x + strong_xoffset; area.y = y + area_height; area.width = area_width; area.height = area_height; gtk_im_context_set_cursor_location (entry->im_context, &area); } static gboolean recompute_idle_func (gpointer data) { GtkEntry *entry; GDK_THREADS_ENTER (); entry = GTK_ENTRY (data); gtk_entry_adjust_scroll (entry); gtk_entry_queue_draw (entry); entry->recompute_idle = FALSE; update_im_cursor_location (entry); GDK_THREADS_LEAVE (); return FALSE; } static void gtk_entry_recompute (GtkEntry *entry) { gtk_entry_reset_layout (entry); gtk_entry_check_cursor_blink (entry); if (!entry->recompute_idle) { entry->recompute_idle = g_idle_add_full (G_PRIORITY_HIGH_IDLE + 15, /* between resize and redraw */ recompute_idle_func, entry, NULL); } } static void append_char (GString *str, gunichar ch, gint count) { gint i; gint char_len; gchar buf[7]; char_len = g_unichar_to_utf8 (ch, buf); i = 0; while (i < count) { g_string_append_len (str, buf, char_len); ++i; } } static PangoLayout * gtk_entry_create_layout (GtkEntry *entry, gboolean include_preedit) { PangoLayout *layout = gtk_widget_create_pango_layout (GTK_WIDGET (entry), NULL); PangoAttrList *tmp_attrs = pango_attr_list_new (); gchar *preedit_string = NULL; gint preedit_length = 0; PangoAttrList *preedit_attrs = NULL; const char *text = gtk_entry_get_text (entry); size_t n_bytes = strlen (text); pango_layout_set_single_paragraph_mode (layout, TRUE); if (include_preedit) { gtk_im_context_get_preedit_string (entry->im_context, &preedit_string, &preedit_attrs, NULL); preedit_length = entry->preedit_length; } if (preedit_length) { GString *tmp_string = g_string_new (NULL); gint cursor_index = g_utf8_offset_to_pointer (text, entry->current_pos) - text; if (entry->visible) { g_string_prepend_len (tmp_string, text, n_bytes); g_string_insert (tmp_string, cursor_index, preedit_string); } else { gint ch_len; gint preedit_len_chars; gunichar invisible_char; ch_len = g_utf8_strlen (text, n_bytes); preedit_len_chars = g_utf8_strlen (preedit_string, -1); ch_len += preedit_len_chars; if (entry->invisible_char != 0) invisible_char = entry->invisible_char; else invisible_char = ' '; /* just pick a char */ append_char (tmp_string, invisible_char, ch_len); /* Fix cursor index to point to invisible char corresponding * to the preedit, fix preedit_length to be the length of * the invisible chars representing the preedit */ cursor_index = g_utf8_offset_to_pointer (tmp_string->str, entry->current_pos) - tmp_string->str; preedit_length = preedit_len_chars * g_unichar_to_utf8 (invisible_char, NULL); } pango_layout_set_text (layout, tmp_string->str, tmp_string->len); pango_attr_list_splice (tmp_attrs, preedit_attrs, cursor_index, preedit_length); g_string_free (tmp_string, TRUE); } else { if (entry->visible) { pango_layout_set_text (layout, text, n_bytes); } else { GString *str = g_string_new (NULL); gunichar invisible_char; if (entry->invisible_char != 0) invisible_char = entry->invisible_char; else invisible_char = ' '; /* just pick a char */ append_char (str, invisible_char, gtk_entry_get_text_length (entry)); pango_layout_set_text (layout, str->str, str->len); g_string_free (str, TRUE); } } pango_layout_set_attributes (layout, tmp_attrs); if (preedit_string) g_free (preedit_string); if (preedit_attrs) pango_attr_list_unref (preedit_attrs); pango_attr_list_unref (tmp_attrs); return layout; } static PangoLayout * gtk_entry_ensure_layout (GtkEntry *entry, gboolean include_preedit) { if (entry->preedit_length > 0 && !include_preedit != !entry->cache_includes_preedit) gtk_entry_reset_layout (entry); if (!entry->cached_layout) { entry->cached_layout = gtk_entry_create_layout (entry, include_preedit); entry->cache_includes_preedit = include_preedit; } return entry->cached_layout; } static void get_layout_position (GtkEntry *entry, gint *x, gint *y) { PangoLayout *layout; PangoRectangle logical_rect; gint area_width, area_height; gint y_pos; PangoLayoutLine *line; layout = gtk_entry_ensure_layout (entry, TRUE); get_text_area_size (entry, NULL, NULL, &area_width, &area_height); area_height = PANGO_SCALE * (area_height); line = pango_layout_get_lines (layout)->data; pango_layout_line_get_extents (line, NULL, &logical_rect); /* Align primarily for locale's ascent/descent */ y_pos = ((area_height - entry->ascent - entry->descent) / 2 + entry->ascent + logical_rect.y); /* Now see if we need to adjust to fit in actual drawn string */ if (logical_rect.height > area_height) y_pos = (area_height - logical_rect.height) / 2; else if (y_pos < 0) y_pos = 0; else if (y_pos + logical_rect.height > area_height) y_pos = area_height - logical_rect.height; y_pos = y_pos / PANGO_SCALE; if (x) *x = - entry->scroll_offset; if (y) *y = y_pos; } static void gtk_entry_draw_text (GtkEntry *entry) { GtkWidget *widget; PangoLayoutLine *line; if (!entry->visible && entry->invisible_char == 0) return; if (GTK_WIDGET_DRAWABLE (entry)) { PangoLayout *layout = gtk_entry_ensure_layout (entry, TRUE); gint area_width, area_height; gint x, y; gint start_pos, end_pos; widget = GTK_WIDGET (entry); get_layout_position (entry, &x, &y); get_text_area_size (entry, NULL, NULL, &area_width, &area_height); gdk_draw_layout (entry->text_area, widget->style->text_gc [widget->state], x, y, layout); if (gtk_editable_get_selection_bounds (GTK_EDITABLE (entry), &start_pos, &end_pos)) { gint *ranges; gint n_ranges, i; PangoRectangle logical_rect; const gchar *text = pango_layout_get_text (layout); gint start_index = g_utf8_offset_to_pointer (text, start_pos) - text; gint end_index = g_utf8_offset_to_pointer (text, end_pos) - text; GdkRegion *clip_region = gdk_region_new (); GdkGC *text_gc; GdkGC *selection_gc; line = pango_layout_get_lines (layout)->data; pango_layout_line_get_x_ranges (line, start_index, end_index, &ranges, &n_ranges); pango_layout_get_extents (layout, NULL, &logical_rect); if (GTK_WIDGET_HAS_FOCUS (entry)) { selection_gc = widget->style->base_gc [GTK_STATE_SELECTED]; text_gc = widget->style->text_gc [GTK_STATE_SELECTED]; } else { selection_gc = widget->style->base_gc [GTK_STATE_ACTIVE]; text_gc = widget->style->text_gc [GTK_STATE_ACTIVE]; } for (i=0; i < n_ranges; i++) { GdkRectangle rect; rect.x = INNER_BORDER - entry->scroll_offset + ranges[2*i] / PANGO_SCALE; rect.y = y; rect.width = (ranges[2*i + 1] - ranges[2*i]) / PANGO_SCALE; rect.height = logical_rect.height / PANGO_SCALE; gdk_draw_rectangle (entry->text_area, selection_gc, TRUE, rect.x, rect.y, rect.width, rect.height); gdk_region_union_with_rect (clip_region, &rect); } gdk_gc_set_clip_region (text_gc, clip_region); gdk_draw_layout (entry->text_area, text_gc, x, y, layout); gdk_gc_set_clip_region (text_gc, NULL); gdk_region_destroy (clip_region); g_free (ranges); } } } /* * From _gtk_get_insertion_cursor_gc */ typedef struct _CursorInfo CursorInfo; struct _CursorInfo { GType for_type; GdkGC *primary_gc; GdkGC *secondary_gc; }; static GdkGC * make_cursor_gc (GtkWidget *widget, const gchar *property_name, GdkColor *fallback) { GdkGCValues gc_values; GdkGCValuesMask gc_values_mask; GdkColor *cursor_color; gtk_widget_style_get (widget, property_name, &cursor_color, NULL); gc_values_mask = GDK_GC_FOREGROUND; if (cursor_color) { gc_values.foreground = *cursor_color; gdk_color_free (cursor_color); } else gc_values.foreground = *fallback; gdk_rgb_find_color (widget->style->colormap, &gc_values.foreground); return gtk_gc_get (widget->style->depth, widget->style->colormap, &gc_values, gc_values_mask); } static GdkGC * _gtkextra_get_insertion_cursor_gc (GtkWidget *widget, gboolean is_primary) { CursorInfo *cursor_info; cursor_info = g_object_get_data (G_OBJECT (widget->style), "gtk-style-cursor-info"); if (!cursor_info) { cursor_info = g_new (CursorInfo, 1); g_object_set_data (G_OBJECT (widget->style), "gtk-style-cursor-info", cursor_info); cursor_info->primary_gc = NULL; cursor_info->secondary_gc = NULL; cursor_info->for_type = G_TYPE_INVALID; } /* We have to keep track of the type because gtk_widget_style_get() * can return different results when called on the same property and * same style but for different widgets. :-(. That is, * GtkEntry::cursor-color = "red" in a style will modify the cursor * color for entries but not for text view. */ if (cursor_info->for_type != G_OBJECT_TYPE (widget)) { cursor_info->for_type = G_OBJECT_TYPE (widget); if (cursor_info->primary_gc) { gtk_gc_release (cursor_info->primary_gc); cursor_info->primary_gc = NULL; } if (cursor_info->secondary_gc) { gtk_gc_release (cursor_info->secondary_gc); cursor_info->secondary_gc = NULL; } } if (is_primary) { if (!cursor_info->primary_gc) cursor_info->primary_gc = make_cursor_gc (widget, "cursor-color", &widget->style->black); return g_object_ref (cursor_info->primary_gc); } else { static GdkColor gray = { 0, 0x8888, 0x8888, 0x8888 }; if (!cursor_info->secondary_gc) cursor_info->secondary_gc = make_cursor_gc (widget, "secondary-cursor-color", &gray); return g_object_ref (cursor_info->secondary_gc); } } /* * From _gtk_draw_insertion_cursor */ static void _gtkextra_draw_insertion_cursor (GtkWidget *widget, GdkDrawable *drawable, GdkGC *gc, GdkRectangle *location, GtkTextDirection direction, gboolean draw_arrow) { gint stem_width; gint arrow_width; gint x, y; gint i; gfloat cursor_aspect_ratio; gint offset; g_return_if_fail (direction != GTK_TEXT_DIR_NONE); gtk_widget_style_get (widget, "cursor-aspect-ratio", &cursor_aspect_ratio, NULL); stem_width = location->height * cursor_aspect_ratio + 1; arrow_width = stem_width + 1; /* put (stem_width % 2) on the proper side of the cursor */ if (direction == GTK_TEXT_DIR_LTR) offset = stem_width / 2; else offset = stem_width - stem_width / 2; for (i = 0; i < stem_width; i++) gdk_draw_line (drawable, gc, location->x + i - offset, location->y, location->x + i - offset, location->y + location->height - 1); if (draw_arrow) { if (direction == GTK_TEXT_DIR_RTL) { x = location->x - offset - 1; y = location->y + location->height - arrow_width * 2 - arrow_width + 1; for (i = 0; i < arrow_width; i++) { gdk_draw_line (drawable, gc, x, y + i + 1, x, y + 2 * arrow_width - i - 1); x --; } } else if (direction == GTK_TEXT_DIR_LTR) { x = location->x + stem_width - offset; y = location->y + location->height - arrow_width * 2 - arrow_width + 1; for (i = 0; i < arrow_width; i++) { gdk_draw_line (drawable, gc, x, y + i + 1, x, y + 2 * arrow_width - i - 1); x++; } } } } static void gtk_entry_draw_cursor (GtkEntry *entry, CursorType type) { GtkTextDirection keymap_direction = (gdk_keymap_get_direction (gdk_keymap_get_default ()) == PANGO_DIRECTION_LTR) ? GTK_TEXT_DIR_LTR : GTK_TEXT_DIR_RTL; GtkTextDirection widget_direction = gtk_widget_get_direction (GTK_WIDGET (entry)); if (GTK_WIDGET_DRAWABLE (entry) && GTK_ENTRY(entry)->cursor_visible) { GtkWidget *widget = GTK_WIDGET (entry); GdkRectangle cursor_location; gboolean split_cursor; gint xoffset = INNER_BORDER - entry->scroll_offset; gint strong_x, weak_x; gint text_area_height; GtkTextDirection dir1 = GTK_TEXT_DIR_NONE; GtkTextDirection dir2 = GTK_TEXT_DIR_NONE; gint x1 = 0; gint x2 = 0; GdkGC *gc; gdk_window_get_size (entry->text_area, NULL, &text_area_height); gtk_entry_get_cursor_locations (entry, type, &strong_x, &weak_x); g_object_get (gtk_widget_get_settings (widget), "gtk-split-cursor", &split_cursor, NULL); dir1 = widget_direction; if (split_cursor) { x1 = strong_x; if (weak_x != strong_x) { dir2 = (widget_direction == GTK_TEXT_DIR_LTR) ? GTK_TEXT_DIR_RTL : GTK_TEXT_DIR_LTR; x2 = weak_x; } } else { if (keymap_direction == widget_direction) x1 = strong_x; else x1 = weak_x; } cursor_location.x = xoffset + x1; cursor_location.y = INNER_BORDER; cursor_location.width = 0; cursor_location.height = text_area_height - 2 * INNER_BORDER ; gc = _gtkextra_get_insertion_cursor_gc (widget, TRUE); _gtkextra_draw_insertion_cursor (widget, entry->text_area, gc, &cursor_location, dir1, dir2 != GTK_TEXT_DIR_NONE); g_object_unref (gc); if (dir2 != GTK_TEXT_DIR_NONE) { cursor_location.x = xoffset + x2; gc = _gtkextra_get_insertion_cursor_gc (widget, FALSE); _gtkextra_draw_insertion_cursor (widget, entry->text_area, gc, &cursor_location, dir2, TRUE); g_object_unref (gc); } } } static void gtk_entry_queue_draw (GtkEntry *entry) { if (GTK_WIDGET_REALIZED (entry)) gdk_window_invalidate_rect (entry->text_area, NULL, FALSE); } static void gtk_entry_reset_im_context_extra (GtkEntry *entry) { if (entry->need_im_reset) { entry->need_im_reset = 0; gtk_im_context_reset (entry->im_context); } } static void gtk_entry_get_cursor_locations (GtkEntry *entry, CursorType type, gint *strong_x, gint *weak_x) { PangoLayout *layout = gtk_entry_ensure_layout (entry, TRUE); const gchar *text; PangoRectangle strong_pos, weak_pos; gint index; if (type == CURSOR_STANDARD) { text = pango_layout_get_text (layout); index = g_utf8_offset_to_pointer (text, entry->current_pos + entry->preedit_cursor) - text; } else /* type == CURSOR_DND */ { const char *text = gtk_entry_get_text (entry); index = g_utf8_offset_to_pointer (text, entry->dnd_position) - text; if (entry->dnd_position > entry->current_pos) index += entry->preedit_length; } pango_layout_get_cursor_pos (layout, index, &strong_pos, &weak_pos); if (strong_x) *strong_x = strong_pos.x / PANGO_SCALE; if (weak_x) *weak_x = weak_pos.x / PANGO_SCALE; } static void gtk_entry_adjust_scroll (GtkEntry *entry) { gint min_offset, max_offset; gint text_area_width; gint strong_x, weak_x; PangoLayout *layout; PangoLayoutLine *line; PangoRectangle logical_rect; GtkItemEntry *item_entry; gint text_width; if (!GTK_WIDGET_REALIZED (entry)) return; item_entry = GTK_ITEM_ENTRY(entry); gdk_window_get_size (entry->text_area, &text_area_width, NULL); text_area_width -= 2 * INNER_BORDER; layout = gtk_entry_ensure_layout (entry, TRUE); line = pango_layout_get_lines (layout)->data; pango_layout_line_get_extents (line, NULL, &logical_rect); text_width = logical_rect.width / PANGO_SCALE + 2; /* 2 for cursor */ gtk_entry_get_cursor_locations (entry, CURSOR_STANDARD, &strong_x, &weak_x); /* Display as much text as we can */ if (gtk_widget_get_direction (GTK_WIDGET (entry)) == GTK_TEXT_DIR_LTR) { entry->scroll_offset = 0; switch(item_entry->justification){ case GTK_JUSTIFY_FILL: case GTK_JUSTIFY_LEFT: /* LEFT JUSTIFICATION */ strong_x -= entry->scroll_offset; if (strong_x < 0) entry->scroll_offset += strong_x; else if (strong_x > text_area_width){ if(item_entry->text_max_size != 0 && text_area_width + 2 <= item_entry->text_max_size){ GtkAllocation allocation; allocation = GTK_WIDGET(entry)->allocation; allocation.width += text_width - text_area_width; entry->scroll_offset = 0; gtk_entry_size_allocate(GTK_WIDGET(entry), &allocation); }else{ entry->scroll_offset += (strong_x - text_area_width) + 1; } } break; case GTK_JUSTIFY_RIGHT: /* RIGHT JUSTIFICATION FOR NUMBERS */ if(gtk_entry_get_text (entry)){ entry->scroll_offset= -(text_area_width - text_width) + 1; if(entry->scroll_offset > 0){ if(item_entry->text_max_size != 0 && text_area_width + 2 <= item_entry->text_max_size){ GtkAllocation allocation; allocation = GTK_WIDGET(entry)->allocation; allocation.x -= text_width - text_area_width; allocation.width += text_width - text_area_width; entry->scroll_offset = 0; gtk_entry_size_allocate(GTK_WIDGET(entry), &allocation); } else { entry->scroll_offset= -(text_area_width - strong_x) + 1; if(entry->scroll_offset < 0) entry->scroll_offset = 0; } } } else entry->scroll_offset=0; break; case GTK_JUSTIFY_CENTER: if(gtk_entry_get_text (entry)){ entry->scroll_offset= -(text_area_width - text_width)/2; if(entry->scroll_offset > 0){ if(item_entry->text_max_size != 0 && text_area_width+1<=item_entry->text_max_size){ GtkAllocation allocation; allocation = GTK_WIDGET(entry)->allocation; allocation.x += (text_area_width/2 - text_width/2); allocation.width += text_width - text_area_width; entry->scroll_offset = 0; gtk_entry_size_allocate(GTK_WIDGET(entry), &allocation); } else { entry->scroll_offset= -(text_area_width - strong_x) + 1; if(entry->scroll_offset < 0) entry->scroll_offset = 0; } } } else entry->scroll_offset=0; break; } } else { max_offset = text_width - text_area_width; min_offset = MIN (0, max_offset); entry->scroll_offset = CLAMP (entry->scroll_offset, min_offset, max_offset); } g_object_notify (G_OBJECT (entry), "scroll_offset"); } static gint gtk_entry_move_visually (GtkEntry *entry, gint start, gint count) { gint index; PangoLayout *layout = gtk_entry_ensure_layout (entry, FALSE); const gchar *text; text = pango_layout_get_text (layout); index = g_utf8_offset_to_pointer (text, start) - text; while (count != 0) { const char *text = gtk_entry_get_text (entry); int new_index, new_trailing; gboolean split_cursor; gboolean strong; g_object_get (gtk_widget_get_settings (GTK_WIDGET (entry)), "gtk-split-cursor", &split_cursor, NULL); if (split_cursor) strong = TRUE; else { GtkTextDirection keymap_direction = (gdk_keymap_get_direction (gdk_keymap_get_default ()) == PANGO_DIRECTION_LTR) ? GTK_TEXT_DIR_LTR : GTK_TEXT_DIR_RTL; strong = keymap_direction == gtk_widget_get_direction (GTK_WIDGET (entry)); } if (count > 0) { pango_layout_move_cursor_visually (layout, strong, index, 0, 1, &new_index, &new_trailing); count--; } else { pango_layout_move_cursor_visually (layout, strong, index, 0, -1, &new_index, &new_trailing); count++; } if (new_index < 0 || new_index == G_MAXINT) break; index = new_index; while (new_trailing--) index = g_utf8_next_char (text + new_index) - text; } return g_utf8_pointer_to_offset (text, text + index); } static gint gtk_entry_move_logically (GtkEntry *entry, gint start, gint count) { const char *text = gtk_entry_get_text (entry); guint16 text_length = gtk_entry_get_text_length (entry); gint new_pos = start; /* Prevent any leak of information */ if (!entry->visible) { new_pos = CLAMP (start + count, 0, text_length); } else if (text) { PangoLayout *layout = gtk_entry_ensure_layout (entry, FALSE); PangoLogAttr *log_attrs; gint n_attrs; pango_layout_get_log_attrs (layout, &log_attrs, &n_attrs); while (count > 0 && new_pos < text_length) { do new_pos++; while (new_pos < text_length && !log_attrs[new_pos].is_cursor_position); count--; } while (count < 0 && new_pos > 0) { do new_pos--; while (new_pos > 0 && !log_attrs[new_pos].is_cursor_position); count++; } g_free (log_attrs); } return new_pos; } static gint gtk_entry_move_forward_word (GtkEntry *entry, gint start) { const char *text = gtk_entry_get_text (entry); guint16 text_length = gtk_entry_get_text_length (entry); gint new_pos = start; /* Prevent any leak of information */ if (!entry->visible) { new_pos = text_length; } else if (text && (new_pos < text_length)) { PangoLayout *layout = gtk_entry_ensure_layout (entry, FALSE); PangoLogAttr *log_attrs; gint n_attrs; pango_layout_get_log_attrs (layout, &log_attrs, &n_attrs); /* Find the next word end */ new_pos++; while (new_pos < n_attrs && !log_attrs[new_pos].is_word_end) new_pos++; g_free (log_attrs); } return new_pos; } static gint gtk_entry_move_backward_word (GtkEntry *entry, gint start) { gint new_pos = start; /* Prevent any leak of information */ if (!entry->visible) { new_pos = 0; } else if (gtk_entry_get_text (entry) && start > 0) { PangoLayout *layout = gtk_entry_ensure_layout (entry, FALSE); PangoLogAttr *log_attrs; gint n_attrs; pango_layout_get_log_attrs (layout, &log_attrs, &n_attrs); new_pos = start - 1; /* Find the previous word beginning */ while (new_pos > 0 && !log_attrs[new_pos].is_word_start) new_pos--; g_free (log_attrs); } return new_pos; } static void gtk_entry_delete_whitespace (GtkEntry *entry) { PangoLayout *layout = gtk_entry_ensure_layout (entry, FALSE); PangoLogAttr *log_attrs; gint n_attrs; gint start, end; pango_layout_get_log_attrs (layout, &log_attrs, &n_attrs); start = end = entry->current_pos; while (start > 0 && log_attrs[start-1].is_white) start--; while (end < n_attrs && log_attrs[end].is_white) end++; g_free (log_attrs); if (start != end) gtk_editable_delete_text (GTK_EDITABLE (entry), start, end); } /* * Like gtk_editable_get_chars, but if the editable is not * visible, return asterisks; also convert result to UTF-8. */ static char * gtk_entry_get_public_chars (GtkEntry *entry, gint start, gint end) { if (end < 0) end = gtk_entry_get_text_length (entry); if (entry->visible) return gtk_editable_get_chars (GTK_EDITABLE (entry), start, end); else { gchar *str; gint i; gint n_chars = end - start; str = g_malloc (n_chars + 1); for (i = 0; i < n_chars; i++) str[i] = '*'; str[i] = '\0'; return str; } } static void primary_get_cb (GtkClipboard *clipboard, GtkSelectionData *selection_data, guint info, gpointer data) { GtkEntry *entry = GTK_ENTRY (data); gint start, end; if (gtk_editable_get_selection_bounds (GTK_EDITABLE (entry), &start, &end)) { gchar *str = gtk_entry_get_public_chars (entry, start, end); gtk_selection_data_set_text (selection_data, str, -1); g_free (str); } } static void primary_clear_cb (GtkClipboard *clipboard, gpointer data) { GtkEntry *entry = GTK_ENTRY (data); gtk_editable_select_region (GTK_EDITABLE (entry), entry->current_pos, entry->current_pos); } static void gtk_entry_update_primary_selection (GtkEntry *entry) { static const GtkTargetEntry targets[] = { { "UTF8_STRING", 0, 0 }, { "STRING", 0, 0 }, { "TEXT", 0, 0 }, { "COMPOUND_TEXT", 0, 0 } }; GtkClipboard *clipboard = gtk_clipboard_get (GDK_SELECTION_PRIMARY); gint start, end; if (gtk_editable_get_selection_bounds (GTK_EDITABLE (entry), &start, &end)) { if (!gtk_clipboard_set_with_owner (clipboard, targets, G_N_ELEMENTS (targets), primary_get_cb, primary_clear_cb, G_OBJECT (entry))) primary_clear_cb (clipboard, entry); } else { if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (entry)) gtk_clipboard_clear (clipboard); } } /* Public API */ GtkWidget* gtk_item_entry_new (void) { GtkWidget *widget; widget = GTK_WIDGET (gtk_type_new (GTK_TYPE_ITEM_ENTRY)); return widget; } GtkWidget* gtk_item_entry_new_with_max_length (gint max) { GtkItemEntry *entry; entry = gtk_type_new (GTK_TYPE_ITEM_ENTRY); gtk_entry_set_max_length(GTK_ENTRY(entry), max); return GTK_WIDGET (entry); } void gtk_item_entry_set_text (GtkItemEntry *entry, const gchar *text, GtkJustification justification) { gint tmp_pos; g_return_if_fail (GTK_IS_ITEM_ENTRY (entry)); g_return_if_fail (text != NULL); entry->justification = justification; /* Actually setting the text will affect the cursor and selection; * if the contents don't actually change, this will look odd to the user. */ if (strcmp (gtk_entry_get_text (GTK_ENTRY(entry)), text) == 0) return; if (GTK_ENTRY(entry)->recompute_idle){ g_source_remove (GTK_ENTRY(entry)->recompute_idle); GTK_ENTRY(entry)->recompute_idle = 0; } if (GTK_ENTRY(entry)->blink_timeout){ g_source_remove (GTK_ENTRY(entry)->blink_timeout); GTK_ENTRY(entry)->blink_timeout = 0; } gtk_editable_delete_text (GTK_EDITABLE (entry), 0, -1); tmp_pos = 0; gtk_editable_insert_text (GTK_EDITABLE (entry), text, strlen (text), &tmp_pos); } /** * gtk_entry_get_layout_offsets: * @entry: a #GtkEntry * @x: location to store X offset of layout, or %NULL * @y: location to store Y offset of layout, or %NULL * * * Obtains the position of the #PangoLayout used to render text * in the entry, in widget coordinates. Useful if you want to line * up the text in an entry with some other text, e.g. when using the * entry to implement editable cells in a sheet widget. * * Also useful to convert mouse events into coordinates inside the * #PangoLayout, e.g. to take some action if some part of the entry text * is clicked. * * Note that as the user scrolls around in the entry the offsets will * change; you'll need to connect to the "notify::scroll_offset" * signal to track this. Remember when using the #PangoLayout * functions you need to convert to and from pixels using * PANGO_PIXELS() or #PANGO_SCALE. * * Keep in mind that the layout text may contain a preedit string, so * gtk_entry_layout_index_to_text_index() and * gtk_entry_text_index_to_layout_index() are needed to convert byte * indices in the layout to byte indices in the entry contents. * **/ void gtk_item_entry_get_layout_offsets (GtkItemEntry *entry, gint *x, gint *y) { gint text_area_x, text_area_y; g_return_if_fail (GTK_IS_ITEM_ENTRY (entry)); /* this gets coords relative to text area */ get_layout_position (GTK_ENTRY(entry), x, y); /* convert to widget coords */ get_text_area_size (GTK_ENTRY(entry), &text_area_x, &text_area_y, NULL, NULL); if (x) *x += text_area_x; if (y) *y += text_area_y; } void gtk_item_entry_set_justification(GtkItemEntry *entry, GtkJustification just) { g_return_if_fail (GTK_IS_ITEM_ENTRY (entry)); entry->justification = just; } /* We display the cursor when * * - the selection is empty, AND * - the widget has focus */ #define CURSOR_ON_MULTIPLIER 0.66 #define CURSOR_OFF_MULTIPLIER 0.34 #define CURSOR_PEND_MULTIPLIER 1.0 static gboolean cursor_blinks (GtkEntry *entry) { GtkSettings *settings = gtk_widget_get_settings (GTK_WIDGET (entry)); gboolean blink; if (GTK_WIDGET_HAS_FOCUS (entry) && entry->selection_bound == entry->current_pos) { g_object_get (G_OBJECT (settings), "gtk-cursor-blink", &blink, NULL); return blink; } else return FALSE; } static gint get_cursor_time (GtkEntry *entry) { GtkSettings *settings = gtk_widget_get_settings (GTK_WIDGET (entry)); gint time; g_object_get (G_OBJECT (settings), "gtk-cursor-blink-time", &time, NULL); return time; } static void show_cursor (GtkEntry *entry) { if (!entry->cursor_visible) { entry->cursor_visible = TRUE; if (GTK_WIDGET_HAS_FOCUS (entry) && entry->selection_bound == entry->current_pos) gtk_widget_queue_draw (GTK_WIDGET (entry)); } } static void hide_cursor (GtkEntry *entry) { if (entry->cursor_visible) { entry->cursor_visible = FALSE; if (GTK_WIDGET_HAS_FOCUS (entry) && entry->selection_bound == entry->current_pos) gtk_widget_queue_draw (GTK_WIDGET (entry)); } } /* * Blink! */ static gint blink_cb (gpointer data) { GtkEntry *entry; GDK_THREADS_ENTER (); entry = GTK_ENTRY (data); g_assert (GTK_WIDGET_HAS_FOCUS (entry)); g_assert (entry->selection_bound == entry->current_pos); if (entry->cursor_visible) { hide_cursor (entry); entry->blink_timeout = gtk_timeout_add (get_cursor_time (entry) * CURSOR_OFF_MULTIPLIER, blink_cb, entry); } else { show_cursor (entry); entry->blink_timeout = gtk_timeout_add (get_cursor_time (entry) * CURSOR_ON_MULTIPLIER, blink_cb, entry); } GDK_THREADS_LEAVE (); /* Remove ourselves */ return FALSE; } static void gtk_entry_check_cursor_blink (GtkEntry *entry) { if (cursor_blinks (entry)) { if (!entry->blink_timeout) { entry->blink_timeout = gtk_timeout_add (get_cursor_time (entry) * CURSOR_ON_MULTIPLIER, blink_cb, entry); show_cursor (entry); } } else { if (entry->blink_timeout) { gtk_timeout_remove (entry->blink_timeout); entry->blink_timeout = 0; } entry->cursor_visible = TRUE; } } static void gtk_entry_pend_cursor_blink (GtkEntry *entry) { if (cursor_blinks (entry)) { if (entry->blink_timeout != 0) gtk_timeout_remove (entry->blink_timeout); entry->blink_timeout = gtk_timeout_add (get_cursor_time (entry) * CURSOR_PEND_MULTIPLIER, blink_cb, entry); show_cursor (entry); } } void gtk_item_entry_set_cursor_visible(GtkItemEntry *entry, gboolean visible) { g_return_if_fail (GTK_IS_ITEM_ENTRY (entry)); GTK_ENTRY(entry)->cursor_visible = visible; } gboolean gtk_item_entry_get_cursor_visible(GtkItemEntry *entry) { g_return_val_if_fail (GTK_IS_ITEM_ENTRY (entry), FALSE); return(GTK_ENTRY(entry)->cursor_visible); }