/* * This program 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) version 3. * * This program 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 the program; if not, see * * * Authors: * Miguel de Icaza * Chris Lahey * * A lot of code taken from: * * Text item type for GnomeCanvas widget * * GnomeCanvas is basically a port of the Tk toolkit's most excellent * canvas widget. Tk is copyrighted by the Regents of the University * of California, Sun Microsystems, and other parties. * * Copyright (C) 1998 The Free Software Foundation * * Author: Federico Mena * * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com) * */ #ifdef HAVE_CONFIG_H #include #endif #include #include #include #include #include #include #include #include "text/e-text.h" #include #include "e-util/e-text-event-processor.h" #include "e-util/e-text-event-processor-emacs-like.h" #include "e-util/e-util.h" #include "misc/e-canvas.h" #include "e-util/e-unicode.h" #include "e-table.h" #include "e-cell-text.h" #include "e-table-item.h" #define d(x) #define DO_SELECTION 1 #define VIEW_TO_CELL(view) E_CELL_TEXT (((ECellView *)view)->ecell) #if d(!)0 #define e_table_item_leave_edit_(x) (e_table_item_leave_edit((x)), g_print ("%s: e_table_item_leave_edit\n", __FUNCTION__)) #else #define e_table_item_leave_edit_(x) (e_table_item_leave_edit((x))) #endif /* This defines a line of text */ struct line { gchar *text; /* Line's text UTF-8, it is a pointer into the text->text string */ gint length; /* Line's length in BYTES */ gint width; /* Line's width in pixels */ gint ellipsis_length; /* Length before adding ellipsis in BYTES */ }; /* Object argument IDs */ enum { PROP_0, PROP_STRIKEOUT_COLUMN, PROP_UNDERLINE_COLUMN, PROP_BOLD_COLUMN, PROP_COLOR_COLUMN, PROP_EDITABLE, PROP_BG_COLOR_COLUMN }; enum { E_SELECTION_PRIMARY, E_SELECTION_CLIPBOARD }; /* signals */ enum { TEXT_INSERTED, TEXT_DELETED, LAST_SIGNAL }; static guint signals[LAST_SIGNAL] = { 0 }; static GdkAtom clipboard_atom = GDK_NONE; G_DEFINE_TYPE (ECellText, e_cell_text, E_TYPE_CELL) #define UTF8_ATOM gdk_atom_intern ("UTF8_STRING", FALSE) #define TEXT_PAD 4 typedef struct { gpointer lines; /* Text split into lines (private field) */ gint num_lines; /* Number of lines of text */ gint max_width; gint ref_count; } ECellTextLineBreaks; typedef struct _CellEdit CellEdit; typedef struct { ECellView cell_view; GdkCursor *i_cursor; GnomeCanvas *canvas; /* * During editing. */ CellEdit *edit; gint xofs, yofs; /* This gets added to the x and y for the cell text. */ gdouble ellipsis_width[2]; /* The width of the ellipsis. */ } ECellTextView; struct _CellEdit { ECellTextView *text_view; gint model_col, view_col, row; gint cell_width; PangoLayout *layout; gchar *text; gchar *old_text; /* * Where the editing is taking place */ gint xofs_edit, yofs_edit; /* Offset because of editing. This is negative compared to the other offsets. */ /* This needs to be reworked a bit once we get line wrapping. */ gint selection_start; /* Start of selection - IN BYTES */ gint selection_end; /* End of selection - IN BYTES */ gboolean select_by_word; /* Current selection is by word */ /* This section is for drag scrolling and blinking cursor. */ /* Cursor handling. */ gint timeout_id; /* Current timeout id for scrolling */ GTimer *timer; /* Timer for blinking cursor and scrolling */ gint lastx, lasty; /* Last x and y motion events */ gint last_state; /* Last state */ gulong scroll_start; /* Starting time for scroll (microseconds) */ gint show_cursor; /* Is cursor currently shown */ gboolean button_down; /* Is mouse button 1 down */ ETextEventProcessor *tep; /* Text Event Processor */ gboolean has_selection; /* TRUE if we have the selection */ guint pointer_in : 1; guint default_cursor_shown : 1; GtkIMContext *im_context; gboolean need_im_reset; gboolean im_context_signals_registered; guint16 preedit_length; /* length of preedit string, in bytes */ gint preedit_pos; /* position of preedit cursor */ ECellActions actions; }; static void e_cell_text_view_command (ETextEventProcessor *tep, ETextEventProcessorCommand *command, gpointer data); static void e_cell_text_view_get_selection (CellEdit *edit, GdkAtom selection, guint32 time); static void e_cell_text_view_supply_selection (CellEdit *edit, guint time, GdkAtom selection, gchar *data, gint length); static void _get_tep (CellEdit *edit); static gint get_position_from_xy (CellEdit *edit, gint x, gint y); static gboolean _blink_scroll_timeout (gpointer data); static void e_cell_text_preedit_changed_cb (GtkIMContext *context, ECellTextView *text_view); static void e_cell_text_commit_cb (GtkIMContext *context, const gchar *str, ECellTextView *text_view); static gboolean e_cell_text_retrieve_surrounding_cb (GtkIMContext *context, ECellTextView *text_view); static gboolean e_cell_text_delete_surrounding_cb (GtkIMContext *context, gint offset, gint n_chars, ECellTextView *text_view); static void _insert (ECellTextView *text_view, const gchar *string, gint value); static void _delete_selection (ECellTextView *text_view); static PangoAttrList* build_attr_list (ECellTextView *text_view, gint row, gint text_length); static void update_im_cursor_location (ECellTextView *tv); static gchar * ect_real_get_text (ECellText *cell, ETableModel *model, gint col, gint row) { return e_table_model_value_at (model, col, row); } static void ect_real_free_text (ECellText *cell, gchar *text) { } /* This is the default method for setting the ETableModel value based on the text in the ECellText. This simply uses the text as it is - it assumes the value in the model is a gchar *. Subclasses may parse the text into data structures to pass to the model. */ static void ect_real_set_value (ECellText *cell, ETableModel *model, gint col, gint row, const gchar *text) { e_table_model_set_value_at (model, col, row, text); } static void ect_queue_redraw (ECellTextView *text_view, gint view_col, gint view_row) { e_table_item_redraw_range ( text_view->cell_view.e_table_item_view, view_col, view_row, view_col, view_row); } /* * Shuts down the editing process */ static void ect_stop_editing (ECellTextView *text_view, gboolean commit) { GdkWindow *window; CellEdit *edit = text_view->edit; gint row, view_col, model_col; gchar *old_text, *text; if (!edit) return; window = gtk_widget_get_window (GTK_WIDGET (text_view->canvas)); row = edit->row; view_col = edit->view_col; model_col = edit->model_col; old_text = edit->old_text; text = edit->text; if (edit->tep) g_object_unref (edit->tep); if (!edit->default_cursor_shown) { gdk_window_set_cursor (window, NULL); edit->default_cursor_shown = TRUE; } if (edit->timeout_id) { g_source_remove (edit->timeout_id); edit->timeout_id = 0; } if (edit->timer) { g_timer_stop (edit->timer); g_timer_destroy (edit->timer); edit->timer = NULL; } g_signal_handlers_disconnect_matched ( edit->im_context, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, text_view); if (edit->layout) g_object_unref (edit->layout); g_free (edit); text_view->edit = NULL; if (commit) { /* * Accept the currently edited text. if it's the same as what's in the cell, do nothing. */ ECellView *ecell_view = (ECellView *) text_view; ECellText *ect = (ECellText *) ecell_view->ecell; if (strcmp (old_text, text)) { e_cell_text_set_value (ect, ecell_view->e_table_model, model_col, row, text); } } g_free (text); g_free (old_text); ect_queue_redraw (text_view, view_col, row); } /* * Cancels the edits */ static void ect_cancel_edit (ECellTextView *text_view) { ect_stop_editing (text_view, FALSE); e_table_item_leave_edit_ (text_view->cell_view.e_table_item_view); } /* * ECell::new_view method */ static ECellView * ect_new_view (ECell *ecell, ETableModel *table_model, gpointer e_table_item_view) { ECellTextView *text_view = g_new0 (ECellTextView, 1); GnomeCanvas *canvas = GNOME_CANVAS_ITEM (e_table_item_view)->canvas; text_view->cell_view.ecell = ecell; text_view->cell_view.e_table_model = table_model; text_view->cell_view.e_table_item_view = e_table_item_view; text_view->cell_view.kill_view_cb = NULL; text_view->cell_view.kill_view_cb_data = NULL; text_view->canvas = canvas; text_view->xofs = 0.0; text_view->yofs = 0.0; return (ECellView *) text_view; } /* * ECell::kill_view method */ static void ect_kill_view (ECellView *ecv) { ECellTextView *text_view = (ECellTextView *) ecv; if (text_view->cell_view.kill_view_cb) (text_view->cell_view.kill_view_cb)(ecv, text_view->cell_view.kill_view_cb_data); if (text_view->cell_view.kill_view_cb_data) g_list_free (text_view->cell_view.kill_view_cb_data); g_free (text_view); } /* * ECell::realize method */ static void ect_realize (ECellView *ecell_view) { ECellTextView *text_view = (ECellTextView *) ecell_view; text_view->i_cursor = gdk_cursor_new (GDK_XTERM); if (E_CELL_CLASS (e_cell_text_parent_class)->realize) (* E_CELL_CLASS (e_cell_text_parent_class)->realize) (ecell_view); } /* * ECell::unrealize method */ static void ect_unrealize (ECellView *ecv) { ECellTextView *text_view = (ECellTextView *) ecv; if (text_view->edit) { ect_cancel_edit (text_view); } g_object_unref (text_view->i_cursor); if (E_CELL_CLASS (e_cell_text_parent_class)->unrealize) (* E_CELL_CLASS (e_cell_text_parent_class)->unrealize) (ecv); } static PangoAttrList* build_attr_list (ECellTextView *text_view, gint row, gint text_length) { ECellView *ecell_view = (ECellView *) text_view; ECellText *ect = E_CELL_TEXT (ecell_view->ecell); PangoAttrList *attrs = pango_attr_list_new (); gboolean bold, strikeout, underline; bold = ect->bold_column >= 0 && row >= 0 && e_table_model_value_at (ecell_view->e_table_model, ect->bold_column, row); strikeout = ect->strikeout_column >= 0 && row >= 0 && e_table_model_value_at (ecell_view->e_table_model, ect->strikeout_column, row); underline = ect->underline_column >= 0 && row >= 0 && e_table_model_value_at (ecell_view->e_table_model, ect->underline_column, row); if (bold || strikeout || underline) { if (bold) { PangoAttribute *attr = pango_attr_weight_new (PANGO_WEIGHT_BOLD); attr->start_index = 0; attr->end_index = text_length; pango_attr_list_insert_before (attrs, attr); } if (strikeout) { PangoAttribute *attr = pango_attr_strikethrough_new (TRUE); attr->start_index = 0; attr->end_index = text_length; pango_attr_list_insert_before (attrs, attr); } if (underline) { PangoAttribute *attr = pango_attr_underline_new (TRUE); attr->start_index = 0; attr->end_index = text_length; pango_attr_list_insert_before (attrs, attr); } } return attrs; } static PangoLayout * layout_with_preedit (ECellTextView *text_view, gint row, const gchar *text, gint width) { CellEdit *edit = text_view->edit; PangoAttrList *attrs; PangoLayout *layout; GString *tmp_string = g_string_new (NULL); PangoAttrList *preedit_attrs = NULL; gchar *preedit_string = NULL; gint preedit_length = 0; gint text_length = strlen (text); gint mlen = MIN (edit->selection_start,text_length); gtk_im_context_get_preedit_string (edit->im_context, &preedit_string,&preedit_attrs, NULL); preedit_length = edit->preedit_length = strlen (preedit_string);; layout = edit->layout; g_string_prepend_len (tmp_string, text,text_length); if (preedit_length) { /* mlen is the text_length in bytes, not chars * check whether we are not inserting into * the middle of a utf8 character */ if (mlen < text_length) { if (!g_utf8_validate (text+mlen, -1, NULL)) { gchar *tc; tc = g_utf8_find_next_char (text+mlen,NULL); if (tc) { mlen = (gint) (tc - text); } } } g_string_insert (tmp_string, mlen, preedit_string); } pango_layout_set_text (layout, tmp_string->str, tmp_string->len); attrs = (PangoAttrList *) build_attr_list (text_view, row, text_length); if (preedit_length) pango_attr_list_splice (attrs, preedit_attrs, mlen, preedit_length); pango_layout_set_attributes (layout, attrs); g_string_free (tmp_string, TRUE); if (preedit_string) g_free (preedit_string); if (preedit_attrs) pango_attr_list_unref (preedit_attrs); pango_attr_list_unref (attrs); update_im_cursor_location (text_view); return layout; } static PangoLayout * build_layout (ECellTextView *text_view, gint row, const gchar *text, gint width) { ECellView *ecell_view = (ECellView *) text_view; ECellText *ect = E_CELL_TEXT (ecell_view->ecell); PangoAttrList *attrs; PangoLayout *layout; layout = gtk_widget_create_pango_layout (GTK_WIDGET (((GnomeCanvasItem *) ecell_view->e_table_item_view)->canvas), text); attrs = (PangoAttrList *) build_attr_list (text_view, row, text ? strlen (text) : 0); pango_layout_set_attributes (layout, attrs); pango_attr_list_unref (attrs); if (text_view->edit || width <= 0) return layout; if (ect->font_name) { PangoFontDescription *desc = NULL, *fixed_desc = NULL; gchar *fixed_family = NULL; gint fixed_size = 0; gboolean fixed_points = TRUE; fixed_desc = pango_font_description_from_string (ect->font_name); if (fixed_desc) { fixed_family = (gchar *) pango_font_description_get_family (fixed_desc); fixed_size = pango_font_description_get_size (fixed_desc); fixed_points = !pango_font_description_get_size_is_absolute (fixed_desc); } desc = pango_font_description_copy (gtk_widget_get_style (GTK_WIDGET (((GnomeCanvasItem *) ecell_view->e_table_item_view)->canvas))->font_desc); pango_font_description_set_family (desc, fixed_family); if (fixed_points) pango_font_description_set_size (desc, fixed_size); else pango_font_description_set_absolute_size (desc, fixed_size); /* pango_font_description_set_style (desc, PANGO_STYLE_OBLIQUE); */ pango_layout_set_font_description (layout, desc); pango_font_description_free (desc); pango_font_description_free (fixed_desc); } pango_layout_set_width (layout, width * PANGO_SCALE); pango_layout_set_wrap (layout, PANGO_WRAP_WORD_CHAR); pango_layout_set_ellipsize (layout, PANGO_ELLIPSIZE_END); pango_layout_set_height (layout, 0); switch (ect->justify) { case GTK_JUSTIFY_RIGHT: pango_layout_set_alignment (layout, PANGO_ALIGN_RIGHT); break; case GTK_JUSTIFY_CENTER: pango_layout_set_alignment (layout, PANGO_ALIGN_CENTER); break; case GTK_JUSTIFY_LEFT: default: break; } return layout; } static PangoLayout * generate_layout (ECellTextView *text_view, gint model_col, gint view_col, gint row, gint width) { ECellView *ecell_view = (ECellView *) text_view; ECellText *ect = E_CELL_TEXT (ecell_view->ecell); PangoLayout *layout; CellEdit *edit = text_view->edit; if (edit && edit->layout && edit->model_col == model_col && edit->row == row) { g_object_ref (edit->layout); return edit->layout; } if (row >= 0) { gchar *temp = e_cell_text_get_text (ect, ecell_view->e_table_model, model_col, row); layout = build_layout (text_view, row, temp ? temp : "?", width); e_cell_text_free_text (ect, temp); } else layout = build_layout (text_view, row, "Mumbo Jumbo", width); return layout; } static void draw_cursor (cairo_t *cr, gint x1, gint y1, PangoRectangle rect) { gdouble scaled_x; gdouble scaled_y; gdouble scaled_height; /* Pango stores each cursor position as a zero-width rectangle. */ scaled_x = x1 + ((gdouble) rect.x) / PANGO_SCALE; scaled_y = y1 + ((gdouble) rect.y) / PANGO_SCALE; scaled_height = ((gdouble) rect.height) / PANGO_SCALE; /* Adding 0.5 to scaled_x gives a sharp, one-pixel line. */ cairo_move_to (cr, scaled_x + 0.5, scaled_y); cairo_line_to (cr, scaled_x + 0.5, scaled_y + scaled_height); cairo_set_line_width (cr, 1); cairo_stroke (cr); } static gboolean show_pango_rectangle (CellEdit *edit, PangoRectangle rect) { gint x1 = rect.x / PANGO_SCALE; gint x2 = (rect.x + rect.width) / PANGO_SCALE; #if 0 gint y1 = rect.y / PANGO_SCALE; gint y2 = (rect.y + rect.height) / PANGO_SCALE; #endif gint new_xofs_edit = edit->xofs_edit; gint new_yofs_edit = edit->yofs_edit; if (x1 < new_xofs_edit) new_xofs_edit = x1; if (2 + x2 - edit->cell_width > new_xofs_edit) new_xofs_edit = 2 + x2 - edit->cell_width; if (new_xofs_edit < 0) new_xofs_edit = 0; #if 0 if (y1 < new_yofs_edit) new_yofs_edit = y1; if (2 + y2 - edit->cell_height > new_yofs_edit) new_yofs_edit = 2 + y2 - edit->cell_height; if (new_yofs_edit < 0) new_yofs_edit = 0; #endif if (new_xofs_edit != edit->xofs_edit || new_yofs_edit != edit->yofs_edit) { edit->xofs_edit = new_xofs_edit; edit->yofs_edit = new_yofs_edit; return TRUE; } return FALSE; } static gint get_vertical_spacing (GtkWidget *canvas) { GtkStyle *style; GtkWidget *widget; gint vspacing = 0; g_return_val_if_fail (E_IS_CANVAS (canvas), 3); /* The parent should be either an ETable or ETree. */ widget = gtk_widget_get_parent (canvas); style = gtk_widget_get_style (widget); gtk_style_get ( style, G_OBJECT_TYPE (widget), "vertical-spacing", &vspacing, NULL); return vspacing; } /* * ECell::draw method */ static void ect_draw (ECellView *ecell_view, cairo_t *cr, gint model_col, gint view_col, gint row, ECellFlags flags, gint x1, gint y1, gint x2, gint y2) { PangoLayout *layout; ECellTextView *text_view = (ECellTextView *) ecell_view; ECellText *ect = E_CELL_TEXT (ecell_view->ecell); CellEdit *edit = text_view->edit; gboolean selected; GtkWidget *canvas = GTK_WIDGET (text_view->canvas); GtkStyle *style; gint x_origin, y_origin, vspacing; cairo_save (cr); style = gtk_widget_get_style (canvas); selected = flags & E_CELL_SELECTED; if (selected) { if (gtk_widget_has_focus (canvas)) gdk_cairo_set_source_color (cr, &style->fg[GTK_STATE_SELECTED]); else gdk_cairo_set_source_color (cr, &style->fg[GTK_STATE_ACTIVE]); } else { gdk_cairo_set_source_color (cr, &style->text[GTK_STATE_NORMAL]); if (ect->color_column != -1) { gchar *color_spec; GdkColor color; color_spec = e_table_model_value_at ( ecell_view->e_table_model, ect->color_column, row); if (color_spec && gdk_color_parse (color_spec, &color)) gdk_cairo_set_source_color (cr, &color); } } vspacing = get_vertical_spacing (canvas); x1 += 4; y1 += vspacing; x2 -= 4; y2 -= vspacing; x_origin = x1 + ect->x + text_view->xofs - (edit ? edit->xofs_edit : 0); y_origin = y1 + ect->y + text_view->yofs - (edit ? edit->yofs_edit : 0); cairo_rectangle (cr, x1, y1, x2 - x1, y2 - y1); cairo_clip (cr); layout = generate_layout (text_view, model_col, view_col, row, x2 - x1); if (edit && edit->view_col == view_col && edit->row == row) { layout = layout_with_preedit (text_view, row, edit->text ? edit->text : "?", x2 - x1); } cairo_move_to (cr, x_origin, y_origin); pango_cairo_show_layout (cr, layout); if (edit && edit->view_col == view_col && edit->row == row) { if (edit->selection_start != edit->selection_end) { cairo_region_t *clip_region; gint indices[2]; GtkStateType state; state = edit->has_selection ? GTK_STATE_SELECTED : GTK_STATE_ACTIVE; indices[0] = MIN (edit->selection_start, edit->selection_end); indices[1] = MAX (edit->selection_start, edit->selection_end); clip_region = gdk_pango_layout_get_clip_region (layout, x_origin, y_origin, indices, 1); gdk_cairo_region (cr, clip_region); cairo_clip (cr); cairo_region_destroy (clip_region); gdk_cairo_set_source_color (cr, &style->base[state]); cairo_paint (cr); gdk_cairo_set_source_color (cr, &style->text[state]); cairo_move_to (cr, x_origin, y_origin); pango_cairo_show_layout (cr, layout); } else { if (edit->show_cursor) { PangoRectangle strong_pos, weak_pos; pango_layout_get_cursor_pos (layout, edit->selection_start + edit->preedit_length, &strong_pos, &weak_pos); draw_cursor (cr, x_origin, y_origin, strong_pos); if (strong_pos.x != weak_pos.x || strong_pos.y != weak_pos.y || strong_pos.width != weak_pos.width || strong_pos.height != weak_pos.height) draw_cursor (cr, x_origin, y_origin, weak_pos); } } } g_object_unref (layout); cairo_restore (cr); } /* * Get the background color */ static gchar * ect_get_bg_color (ECellView *ecell_view, gint row) { ECellText *ect = E_CELL_TEXT (ecell_view->ecell); gchar *color_spec; if (ect->bg_color_column == -1) return NULL; color_spec = e_table_model_value_at (ecell_view->e_table_model, ect->bg_color_column, row); return color_spec; } /* * Selects the entire string */ static void ect_edit_select_all (ECellTextView *text_view) { g_return_if_fail (text_view->edit); text_view->edit->selection_start = 0; text_view->edit->selection_end = strlen (text_view->edit->text); } static gboolean key_begins_editing (GdkEventKey *event) { if (event->length == 0) return FALSE; return TRUE; } /* * ECell::event method */ static gint ect_event (ECellView *ecell_view, GdkEvent *event, gint model_col, gint view_col, gint row, ECellFlags flags, ECellActions *actions) { ECellTextView *text_view = (ECellTextView *) ecell_view; ETextEventProcessorEvent e_tep_event; gboolean edit_display = FALSE; gint preedit_len; CellEdit *edit = text_view->edit; GtkWidget *canvas = GTK_WIDGET (text_view->canvas); gint return_val = 0; d (gboolean press = FALSE); if (!(flags & E_CELL_EDITING)) return 0; if ( edit && !edit->preedit_length && flags & E_CELL_PREEDIT) return 1; if (edit && edit->view_col == view_col && edit->row == row) { edit_display = TRUE; } e_tep_event.type = event->type; switch (event->type) { case GDK_FOCUS_CHANGE: break; case GDK_KEY_PRESS: /* Fall Through */ if (edit_display) { edit->show_cursor = FALSE; } else { ect_stop_editing (text_view, TRUE); } return_val = TRUE; /* Fallthrough */ case GDK_KEY_RELEASE: preedit_len = edit->preedit_length; if (edit_display && edit->im_context && gtk_im_context_filter_keypress (\ edit->im_context, (GdkEventKey*) event)) { edit->need_im_reset = TRUE; if (preedit_len && flags & E_CELL_PREEDIT) return 0; else return 1; } if (event->key.keyval == GDK_KEY_Escape) { /* if not changed, then pass this even to parent */ return_val = text_view->edit != NULL && text_view->edit->text && text_view->edit->old_text && 0 != strcmp (text_view->edit->text, text_view->edit->old_text); ect_cancel_edit (text_view); break; } if ((!edit_display) && e_table_model_is_cell_editable (ecell_view->e_table_model, model_col, row) && key_begins_editing (&event->key)) { e_table_item_enter_edit (text_view->cell_view.e_table_item_view, view_col, row); ect_edit_select_all (text_view); edit = text_view->edit; edit_display = TRUE; } if (edit_display) { GdkEventKey key = event->key; if (key.type == GDK_KEY_PRESS && (key.keyval == GDK_KEY_KP_Enter || key.keyval == GDK_KEY_Return)) { /* stop editing when it's only GDK_KEY_PRESS event */ e_table_item_leave_edit_ (text_view->cell_view.e_table_item_view); } else { e_tep_event.key.time = key.time; e_tep_event.key.state = key.state; e_tep_event.key.keyval = key.keyval; /* This is probably ugly hack, but we have to handle UTF-8 input somehow */ #if 0 e_tep_event.key.length = key.length; e_tep_event.key.string = key.string; #else e_tep_event.key.string = e_utf8_from_gtk_event_key (canvas, key.keyval, key.string); if (e_tep_event.key.string != NULL) { e_tep_event.key.length = strlen (e_tep_event.key.string); } else { e_tep_event.key.length = 0; } #endif _get_tep (edit); return_val = e_text_event_processor_handle_event (edit->tep, &e_tep_event); if (e_tep_event.key.string) g_free ((gpointer) e_tep_event.key.string); break; } } break; case GDK_BUTTON_PRESS: /* Fall Through */ d (press = TRUE); case GDK_BUTTON_RELEASE: d(g_print ("%s: %s\n", __FUNCTION__, press ? "GDK_BUTTON_PRESS" : "GDK_BUTTON_RELEASE")); event->button.x -= 4; event->button.y -= 1; if ((!edit_display) && e_table_model_is_cell_editable (ecell_view->e_table_model, model_col, row) && event->type == GDK_BUTTON_RELEASE && event->button.button == 1) { GdkEventButton button = event->button; e_table_item_enter_edit (text_view->cell_view.e_table_item_view, view_col, row); edit = text_view->edit; edit_display = TRUE; e_tep_event.button.type = GDK_BUTTON_PRESS; e_tep_event.button.time = button.time; e_tep_event.button.state = button.state; e_tep_event.button.button = button.button; e_tep_event.button.position = get_position_from_xy (edit, event->button.x, event->button.y); _get_tep (edit); edit->actions = 0; return_val = e_text_event_processor_handle_event (edit->tep, &e_tep_event); *actions = edit->actions; if (event->button.button == 1) { if (event->type == GDK_BUTTON_PRESS) edit->button_down = TRUE; else edit->button_down = FALSE; } edit->lastx = button.x; edit->lasty = button.y; edit->last_state = button.state; e_tep_event.button.type = GDK_BUTTON_RELEASE; } if (edit_display) { GdkEventButton button = event->button; e_tep_event.button.time = button.time; e_tep_event.button.state = button.state; e_tep_event.button.button = button.button; e_tep_event.button.position = get_position_from_xy (edit, event->button.x, event->button.y); _get_tep (edit); edit->actions = 0; return_val = e_text_event_processor_handle_event (edit->tep, &e_tep_event); *actions = edit->actions; if (event->button.button == 1) { if (event->type == GDK_BUTTON_PRESS) edit->button_down = TRUE; else edit->button_down = FALSE; } edit->lastx = button.x; edit->lasty = button.y; edit->last_state = button.state; } break; case GDK_MOTION_NOTIFY: event->motion.x -= 4; event->motion.y -= 1; if (edit_display) { GdkEventMotion motion = event->motion; e_tep_event.motion.time = motion.time; e_tep_event.motion.state = motion.state; e_tep_event.motion.position = get_position_from_xy (edit, event->motion.x, event->motion.y); _get_tep (edit); edit->actions = 0; return_val = e_text_event_processor_handle_event (edit->tep, &e_tep_event); *actions = edit->actions; edit->lastx = motion.x; edit->lasty = motion.y; edit->last_state = motion.state; } break; case GDK_ENTER_NOTIFY: #if 0 edit->pointer_in = TRUE; #endif if (edit_display) { if (edit->default_cursor_shown) { GdkWindow *window; window = gtk_widget_get_window (canvas); gdk_window_set_cursor (window, text_view->i_cursor); edit->default_cursor_shown = FALSE; } } break; case GDK_LEAVE_NOTIFY: #if 0 text_view->pointer_in = FALSE; #endif if (edit_display) { if (!edit->default_cursor_shown) { GdkWindow *window; window = gtk_widget_get_window (canvas); gdk_window_set_cursor (window, NULL); edit->default_cursor_shown = TRUE; } } break; default: break; } return return_val; } /* * ECell::height method */ static gint ect_height (ECellView *ecell_view, gint model_col, gint view_col, gint row) { ECellTextView *text_view = (ECellTextView *) ecell_view; gint height; PangoLayout *layout; layout = generate_layout (text_view, model_col, view_col, row, 0); pango_layout_get_pixel_size (layout, NULL, &height); g_object_unref (layout); return height + (get_vertical_spacing (GTK_WIDGET (text_view->canvas)) * 2); } /* * ECellView::enter_edit method */ static gpointer ect_enter_edit (ECellView *ecell_view, gint model_col, gint view_col, gint row) { ECellTextView *text_view = (ECellTextView *) ecell_view; CellEdit *edit; ECellText *ect = E_CELL_TEXT (ecell_view->ecell); gchar *temp; edit = g_new0 (CellEdit, 1); text_view->edit = edit; edit->im_context = E_CANVAS (text_view->canvas)->im_context; edit->need_im_reset = FALSE; edit->im_context_signals_registered = FALSE; edit->view_col = -1; edit->model_col = -1; edit->row = -1; edit->text_view = text_view; edit->model_col = model_col; edit->view_col = view_col; edit->row = row; edit->cell_width = e_table_header_get_column ( ((ETableItem *) ecell_view->e_table_item_view)->header, view_col)->width - 8; edit->layout = generate_layout (text_view, model_col, view_col, row, edit->cell_width); edit->xofs_edit = 0.0; edit->yofs_edit = 0.0; edit->selection_start = 0; edit->selection_end = 0; edit->select_by_word = FALSE; edit->timeout_id = g_timeout_add (10, _blink_scroll_timeout, text_view); edit->timer = g_timer_new (); g_timer_elapsed (edit->timer, &(edit->scroll_start)); g_timer_start (edit->timer); edit->lastx = 0; edit->lasty = 0; edit->last_state = 0; edit->scroll_start = 0; edit->show_cursor = TRUE; edit->button_down = FALSE; edit->tep = NULL; edit->has_selection = FALSE; edit->pointer_in = FALSE; edit->default_cursor_shown = TRUE; temp = e_cell_text_get_text (ect, ecell_view->e_table_model, model_col, row); edit->old_text = g_strdup (temp); e_cell_text_free_text (ect, temp); edit->text = g_strdup (edit->old_text); if (edit->im_context) { gtk_im_context_reset (edit->im_context); if (!edit->im_context_signals_registered) { g_signal_connect (edit->im_context, "preedit_changed", G_CALLBACK (e_cell_text_preedit_changed_cb), text_view); g_signal_connect (edit->im_context, "commit", G_CALLBACK (e_cell_text_commit_cb), text_view); g_signal_connect (edit->im_context, "retrieve_surrounding", G_CALLBACK (e_cell_text_retrieve_surrounding_cb), text_view); g_signal_connect (edit->im_context, "delete_surrounding", G_CALLBACK (e_cell_text_delete_surrounding_cb), text_view); edit->im_context_signals_registered = TRUE; } gtk_im_context_focus_in (edit->im_context); } #if 0 if (edit->pointer_in) { if (edit->default_cursor_shown) { gdk_window_set_cursor (GTK_WIDGET (item->canvas)->window, text_view->i_cursor); edit->default_cursor_shown = FALSE; } } #endif ect_queue_redraw (text_view, view_col, row); return NULL; } /* * ECellView::leave_edit method */ static void ect_leave_edit (ECellView *ecell_view, gint model_col, gint view_col, gint row, gpointer edit_context) { ECellTextView *text_view = (ECellTextView *) ecell_view; CellEdit *edit = text_view->edit; if (edit) { if (edit->im_context) { gtk_im_context_focus_out (edit->im_context); if (edit->im_context_signals_registered) { g_signal_handlers_disconnect_matched (edit->im_context, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, edit); edit->im_context_signals_registered = FALSE; } } ect_stop_editing (text_view, TRUE); } else { /* * We did invoke this leave edit internally */ } } /* * ECellView::save_state method */ static gpointer ect_save_state (ECellView *ecell_view, gint model_col, gint view_col, gint row, gpointer edit_context) { ECellTextView *text_view = (ECellTextView *) ecell_view; CellEdit *edit = text_view->edit; gint *save_state = g_new (int, 2); save_state[0] = edit->selection_start; save_state[1] = edit->selection_end; return save_state; } /* * ECellView::load_state method */ static void ect_load_state (ECellView *ecell_view, gint model_col, gint view_col, gint row, gpointer edit_context, gpointer save_state) { ECellTextView *text_view = (ECellTextView *) ecell_view; CellEdit *edit = text_view->edit; gint length; gint *selection = save_state; length = strlen (edit->text); edit->selection_start = MIN (selection[0], length); edit->selection_end = MIN (selection[1], length); ect_queue_redraw (text_view, view_col, row); } /* * ECellView::free_state method */ static void ect_free_state (ECellView *ecell_view, gint model_col, gint view_col, gint row, gpointer save_state) { g_free (save_state); } static void get_font_size (PangoLayout *layout, PangoFontDescription *font, const gchar *text, gdouble *width, gdouble *height) { gint w; gint h; g_return_if_fail (layout != NULL); pango_layout_set_font_description (layout, font); pango_layout_set_text (layout, text, -1); pango_layout_set_width (layout, -1); pango_layout_set_indent (layout, 0); pango_layout_get_size (layout, &w, &h); *width = (gdouble)w/(gdouble)PANGO_SCALE; *height = (gdouble)h/(gdouble)PANGO_SCALE; } static void ect_print (ECellView *ecell_view, GtkPrintContext *context, gint model_col, gint view_col, gint row, gdouble width, gdouble height) { PangoFontDescription *font_des; PangoLayout *layout; PangoContext *pango_context; PangoFontMetrics *font_metrics; ECellText *ect = E_CELL_TEXT (ecell_view->ecell); ECellTextView *ectView = (ECellTextView *) ecell_view; GtkWidget *canvas = GTK_WIDGET (ectView->canvas); GtkStyle *style; PangoDirection dir; gboolean strikeout, underline; cairo_t *cr; gchar *string; gdouble ty, ly, text_width = 0.0, text_height = 0.0; cr = gtk_print_context_get_cairo_context (context); string = e_cell_text_get_text (ect, ecell_view->e_table_model, model_col, row); cairo_save (cr); layout = gtk_print_context_create_pango_layout (context); font_des = pango_font_description_from_string ("sans 10"); /* fix me font hardcoded */ pango_layout_set_font_description (layout, font_des); pango_layout_set_text (layout, string, -1); get_font_size (layout, font_des, string, &text_width, &text_height); cairo_move_to (cr, 2, 2); cairo_rectangle (cr, 2, 2, width + 2, height + 2); cairo_clip (cr); style = gtk_widget_get_style (canvas); pango_context = gtk_widget_get_pango_context (canvas); font_metrics = pango_context_get_metrics ( pango_context, style->font_desc, pango_context_get_language (pango_context)); ty = (gdouble)(text_height - pango_font_metrics_get_ascent (font_metrics) - pango_font_metrics_get_descent (font_metrics)) / 2.0 /(gdouble) PANGO_SCALE; strikeout = ect->strikeout_column >= 0 && row >= 0 && e_table_model_value_at (ecell_view->e_table_model, ect->strikeout_column, row); underline = ect->underline_column >= 0 && row >= 0 && e_table_model_value_at (ecell_view->e_table_model, ect->underline_column, row); dir = pango_find_base_dir (string, strlen (string)); if (underline) { ly = ty + (gdouble) pango_font_metrics_get_underline_position (font_metrics)/(gdouble) PANGO_SCALE; cairo_new_path (cr); if (dir == PANGO_DIRECTION_RTL) { cairo_move_to (cr, width - 2, ly + text_height + 6); cairo_line_to (cr, MAX (width - 2 - text_width, 2), ly + text_height + 6); } else { cairo_move_to (cr, 2, ly + text_height + 6); cairo_line_to (cr, MIN (2 + text_width, width - 2), ly + text_height + 6); } cairo_set_line_width (cr, (gdouble) pango_font_metrics_get_underline_thickness (font_metrics)/(gdouble) PANGO_SCALE); cairo_stroke (cr); } if (strikeout) { ly = ty + (gdouble) pango_font_metrics_get_strikethrough_position (font_metrics)/(gdouble) PANGO_SCALE; cairo_new_path (cr); if (dir == PANGO_DIRECTION_RTL) { cairo_move_to (cr, width - 2, ly + text_height + 6); cairo_line_to (cr, MAX (width - 2 - text_width, 2), ly + text_height + 6); } else { cairo_move_to (cr, 2, ly + text_height + 6); cairo_line_to (cr, MIN (2 + text_width, width - 2), ly + text_height + 6); } cairo_set_line_width (cr,(gdouble) pango_font_metrics_get_strikethrough_thickness (font_metrics)/(gdouble) PANGO_SCALE); cairo_stroke (cr); } cairo_move_to (cr, 2, text_height- 5); pango_layout_set_width (layout, (width - 4)*PANGO_SCALE); pango_layout_set_wrap (layout, PANGO_WRAP_CHAR); pango_cairo_show_layout (cr, layout); cairo_restore (cr); pango_font_description_free (font_des); g_object_unref (layout); e_cell_text_free_text (ect, string); } static gdouble ect_print_height (ECellView *ecell_view, GtkPrintContext *context, gint model_col, gint view_col, gint row, gdouble width) { /* * Font size is 16 by default. To leave some margin for cell * text area, 2 for footer, 2 for header, actual print height * should be 16 + 4. * Height of some special font is much higher than others, * such as Arabic. So leave some more margin for cell. */ PangoFontDescription *font_des; PangoLayout *layout; ECellText *ect = E_CELL_TEXT (ecell_view->ecell); gchar *string; gdouble text_width = 0.0, text_height = 0.0; gint lines=1; string = e_cell_text_get_text (ect, ecell_view->e_table_model, model_col, row); layout = gtk_print_context_create_pango_layout (context); font_des = pango_font_description_from_string ("sans 10"); /* fix me font hardcoded */ pango_layout_set_font_description (layout, font_des); pango_layout_set_text (layout, string, -1); get_font_size (layout, font_des, string, &text_width, &text_height); /* Checking if the text width goes beyond the column width to increase the * number of lines. */ if ( text_width > width-4) lines = (text_width / (width-4)) + 1; return 16*lines + 8; } static gint ect_max_width (ECellView *ecell_view, gint model_col, gint view_col) { /* New ECellText */ ECellTextView *text_view = (ECellTextView *) ecell_view; gint row; gint number_of_rows; gint max_width = 0; number_of_rows = e_table_model_row_count (ecell_view->e_table_model); for (row = 0; row < number_of_rows; row++) { PangoLayout *layout = generate_layout (text_view, model_col, view_col, row, 0); gint width; pango_layout_get_pixel_size (layout, &width, NULL); max_width = MAX (max_width, width); g_object_unref (layout); } return max_width + 8; } static gint ect_max_width_by_row (ECellView *ecell_view, gint model_col, gint view_col, gint row) { /* New ECellText */ ECellTextView *text_view = (ECellTextView *) ecell_view; gint width; PangoLayout *layout; if (row >= e_table_model_row_count (ecell_view->e_table_model)) return 0; layout = generate_layout (text_view, model_col, view_col, row, 0); pango_layout_get_pixel_size (layout, &width, NULL); g_object_unref (layout); return width + 8; } static void ect_finalize (GObject *object) { ECellText *ect = E_CELL_TEXT (object); g_free (ect->font_name); G_OBJECT_CLASS (e_cell_text_parent_class)->finalize (object); } /* Set_arg handler for the text item */ static void ect_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { ECellText *text; text = E_CELL_TEXT (object); switch (prop_id) { case PROP_STRIKEOUT_COLUMN: text->strikeout_column = g_value_get_int (value); break; case PROP_UNDERLINE_COLUMN: text->underline_column = g_value_get_int (value); break; case PROP_BOLD_COLUMN: text->bold_column = g_value_get_int (value); break; case PROP_COLOR_COLUMN: text->color_column = g_value_get_int (value); break; case PROP_EDITABLE: text->editable = g_value_get_boolean (value); break; case PROP_BG_COLOR_COLUMN: text->bg_color_column = g_value_get_int (value); break; default: return; } } /* Get_arg handler for the text item */ static void ect_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { ECellText *text; text = E_CELL_TEXT (object); switch (prop_id) { case PROP_STRIKEOUT_COLUMN: g_value_set_int (value, text->strikeout_column); break; case PROP_UNDERLINE_COLUMN: g_value_set_int (value, text->underline_column); break; case PROP_BOLD_COLUMN: g_value_set_int (value, text->bold_column); break; case PROP_COLOR_COLUMN: g_value_set_int (value, text->color_column); break; case PROP_EDITABLE: g_value_set_boolean (value, text->editable); break; case PROP_BG_COLOR_COLUMN: g_value_set_int (value, text->bg_color_column); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static gchar *ellipsis_default = NULL; static gboolean use_ellipsis_default = TRUE; static void e_cell_text_class_init (ECellTextClass *class) { ECellClass *ecc = E_CELL_CLASS (class); GObjectClass *object_class = G_OBJECT_CLASS (class); const gchar *ellipsis_env; object_class->finalize = ect_finalize; ecc->new_view = ect_new_view; ecc->kill_view = ect_kill_view; ecc->realize = ect_realize; ecc->unrealize = ect_unrealize; ecc->draw = ect_draw; ecc->event = ect_event; ecc->height = ect_height; ecc->enter_edit = ect_enter_edit; ecc->leave_edit = ect_leave_edit; ecc->save_state = ect_save_state; ecc->load_state = ect_load_state; ecc->free_state = ect_free_state; ecc->print = ect_print; ecc->print_height = ect_print_height; ecc->max_width = ect_max_width; ecc->max_width_by_row = ect_max_width_by_row; ecc->get_bg_color = ect_get_bg_color; class->get_text = ect_real_get_text; class->free_text = ect_real_free_text; class->set_value = ect_real_set_value; object_class->get_property = ect_get_property; object_class->set_property = ect_set_property; signals[TEXT_INSERTED] = g_signal_new ("text_inserted", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (ECellTextClass, text_inserted), NULL, NULL, e_marshal_VOID__POINTER_INT_INT_INT_INT, G_TYPE_NONE, 5, G_TYPE_POINTER, G_TYPE_INT, G_TYPE_INT, G_TYPE_INT, G_TYPE_INT); signals[TEXT_DELETED] = g_signal_new ("text_deleted", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (ECellTextClass, text_deleted), NULL, NULL, e_marshal_VOID__POINTER_INT_INT_INT_INT, G_TYPE_NONE, 5, G_TYPE_POINTER, G_TYPE_INT, G_TYPE_INT, G_TYPE_INT, G_TYPE_INT); g_object_class_install_property (object_class, PROP_STRIKEOUT_COLUMN, g_param_spec_int ("strikeout_column", "Strikeout Column", NULL, -1, G_MAXINT, -1, G_PARAM_READWRITE)); g_object_class_install_property (object_class, PROP_UNDERLINE_COLUMN, g_param_spec_int ("underline_column", "Underline Column", NULL, -1, G_MAXINT, -1, G_PARAM_READWRITE)); g_object_class_install_property (object_class, PROP_BOLD_COLUMN, g_param_spec_int ("bold_column", "Bold Column", NULL, -1, G_MAXINT, -1, G_PARAM_READWRITE)); g_object_class_install_property (object_class, PROP_COLOR_COLUMN, g_param_spec_int ("color_column", "Color Column", NULL, -1, G_MAXINT, -1, G_PARAM_READWRITE)); g_object_class_install_property (object_class, PROP_EDITABLE, g_param_spec_boolean ("editable", "Editable", NULL, FALSE, G_PARAM_READWRITE)); g_object_class_install_property (object_class, PROP_BG_COLOR_COLUMN, g_param_spec_int ("bg_color_column", "BG Color Column", NULL, -1, G_MAXINT, -1, G_PARAM_READWRITE)); if (!clipboard_atom) clipboard_atom = gdk_atom_intern ("CLIPBOARD", FALSE); ellipsis_env = g_getenv ("GAL_ELLIPSIS"); if (ellipsis_env) { if (*ellipsis_env) { ellipsis_default = g_strdup (ellipsis_env); } else { use_ellipsis_default = FALSE; } } } /* IM Context Callbacks */ static void e_cell_text_get_cursor_locations (ECellTextView *tv, GdkRectangle *strong_pos, GdkRectangle *weak_pos) { GdkRectangle area; CellEdit *edit=tv->edit; ECellView *cell_view = (ECellView *) tv; ETableItem *item = E_TABLE_ITEM ((cell_view)->e_table_item_view); GnomeCanvasItem *parent_item = GNOME_CANVAS_ITEM (item)->parent; PangoRectangle pango_strong_pos; PangoRectangle pango_weak_pos; gint x, y, col, row; gdouble x1,y1; gint cx, cy; gint index; row = edit->row; col = edit->view_col; e_table_item_get_cell_geometry (item, &row, &col, &x, &y, NULL, &area.height); gnome_canvas_item_get_bounds (GNOME_CANVAS_ITEM (parent_item), &x1, &y1, NULL, NULL); gnome_canvas_get_scroll_offsets (GNOME_CANVAS (GNOME_CANVAS_ITEM (parent_item)->canvas), &cx, &cy); index = edit->selection_end + edit->preedit_pos; pango_layout_get_cursor_pos (edit->layout, index, strong_pos ? &pango_strong_pos : NULL, weak_pos ? &pango_weak_pos : NULL); if (strong_pos) { strong_pos->x = x + x1 - cx - edit->xofs_edit + pango_strong_pos.x / PANGO_SCALE; strong_pos->y = y + y1 - cy - edit->yofs_edit + pango_strong_pos.y / PANGO_SCALE; strong_pos->width = 0; strong_pos->height = pango_strong_pos.height / PANGO_SCALE; } if (weak_pos) { weak_pos->x = x + x1 - cx - edit->xofs_edit + pango_weak_pos.x / PANGO_SCALE; weak_pos->y = y + y1 - cy - edit->yofs_edit + pango_weak_pos.y / PANGO_SCALE; weak_pos->width = 0; weak_pos->height = pango_weak_pos.height / PANGO_SCALE; } } static void update_im_cursor_location (ECellTextView *tv) { CellEdit *edit=tv->edit; GdkRectangle area; e_cell_text_get_cursor_locations (tv, &area, NULL); gtk_im_context_set_cursor_location (edit->im_context, &area); } static void e_cell_text_preedit_changed_cb (GtkIMContext *context, ECellTextView *tv) { gchar *preedit_string; gint cursor_pos; CellEdit *edit=tv->edit; gtk_im_context_get_preedit_string (edit->im_context, &preedit_string, NULL, &cursor_pos); edit->preedit_length = strlen (preedit_string); cursor_pos = CLAMP (cursor_pos, 0, g_utf8_strlen (preedit_string, -1)); edit->preedit_pos = g_utf8_offset_to_pointer (preedit_string, cursor_pos) - preedit_string; g_free (preedit_string); ect_queue_redraw (tv, edit->view_col, edit->row); } static void e_cell_text_commit_cb (GtkIMContext *context, const gchar *str, ECellTextView *tv) { CellEdit *edit = tv->edit; ETextEventProcessorCommand command; if (g_utf8_validate (str, strlen (str), NULL)) { command.action = E_TEP_INSERT; command.position = E_TEP_SELECTION; command.string = (gchar *) str; command.value = strlen (str); e_cell_text_view_command (edit->tep, &command, edit); } } static gboolean e_cell_text_retrieve_surrounding_cb (GtkIMContext *context, ECellTextView *tv) { CellEdit *edit = tv->edit; gtk_im_context_set_surrounding (context, edit->text, strlen (edit->text), MIN (edit->selection_start, edit->selection_end) ); return TRUE; } static gboolean e_cell_text_delete_surrounding_cb (GtkIMContext *context, gint offset, gint n_chars, ECellTextView *tv) { gint begin_pos, end_pos; glong text_len; CellEdit *edit = tv->edit; text_len = g_utf8_strlen (edit->text, -1); begin_pos = g_utf8_pointer_to_offset (edit->text, edit->text + MIN (edit->selection_start, edit->selection_end)); begin_pos += offset; end_pos = begin_pos + n_chars; if (begin_pos < 0 || text_len < begin_pos) return FALSE; if (end_pos > text_len) end_pos = text_len; edit->selection_start = g_utf8_offset_to_pointer (edit->text, begin_pos) - edit->text; edit->selection_end = g_utf8_offset_to_pointer (edit->text, end_pos) - edit->text; _delete_selection (tv); return TRUE; } static void e_cell_text_init (ECellText *ect) { ect->ellipsis = g_strdup (ellipsis_default); ect->use_ellipsis = use_ellipsis_default; ect->strikeout_column = -1; ect->underline_column = -1; ect->bold_column = -1; ect->color_column = -1; ect->bg_color_column = -1; ect->editable = TRUE; } /** * e_cell_text_new: * @fontname: this param is no longer used, but left here for api stability * @justify: Justification of the string in the cell. * * Creates a new ECell renderer that can be used to render strings that * that come from the model. The value returned from the model is * interpreted as being a gchar *. * * The ECellText object support a large set of properties that can be * configured through the Gtk argument system and allows the user to have * a finer control of the way the string is displayed. The arguments supported * allow the control of strikeout, underline, bold, and color. * * The arguments "strikeout_column", "underline_column", "bold_column" * and "color_column" set and return an integer that points to a * column in the model that controls these settings. So controlling * the way things are rendered is achieved by having special columns * in the model that will be used to flag whether the text should be * rendered with strikeout, or bolded. In the case of the * "color_column" argument, the column in the model is expected to * have a string that can be parsed by gdk_color_parse(). * * Returns: an ECell object that can be used to render strings. */ ECell * e_cell_text_new (const gchar *fontname, GtkJustification justify) { ECellText *ect = g_object_new (E_TYPE_CELL_TEXT, NULL); e_cell_text_construct (ect, fontname, justify); return (ECell *) ect; } /** * e_cell_text_construct: * @cell: The cell to construct * @fontname: this param is no longer used, but left here for api stability * @justify: Justification of the string in the cell * * constructs the ECellText. To be used by subclasses and language * bindings. * * Returns: The ECellText. */ ECell * e_cell_text_construct (ECellText *cell, const gchar *fontname, GtkJustification justify) { if (!cell) return E_CELL (NULL); if (fontname) cell->font_name = g_strdup (fontname); cell->justify = justify; return E_CELL (cell); } gchar * e_cell_text_get_text (ECellText *cell, ETableModel *model, gint col, gint row) { ECellTextClass *class; g_return_val_if_fail (E_IS_CELL_TEXT (cell), NULL); class = E_CELL_TEXT_GET_CLASS (cell); if (class->get_text == NULL) return NULL; return class->get_text (cell, model, col, row); } void e_cell_text_free_text (ECellText *cell, gchar *text) { ECellTextClass *class; g_return_if_fail (E_IS_CELL_TEXT (cell)); class = E_CELL_TEXT_GET_CLASS (cell); if (class->free_text == NULL) return; class->free_text (cell, text); } void e_cell_text_set_value (ECellText *cell, ETableModel *model, gint col, gint row, const gchar *text) { ECellTextClass *class; g_return_if_fail (E_IS_CELL_TEXT (cell)); class = E_CELL_TEXT_GET_CLASS (cell); if (class->set_value == NULL) return; class->set_value (cell, model, col, row, text); } /* fixme: Handle Font attributes */ /* position is in BYTES */ static gint get_position_from_xy (CellEdit *edit, gint x, gint y) { gint index; gint trailing; const gchar *text; PangoLayout *layout = generate_layout (edit->text_view, edit->model_col, edit->view_col, edit->row, edit->cell_width); ECellTextView *text_view = edit->text_view; ECellText *ect = (ECellText *) ((ECellView *) text_view)->ecell; x -= (ect->x + text_view->xofs - edit->xofs_edit); y -= (ect->y + text_view->yofs - edit->yofs_edit); pango_layout_xy_to_index (layout, x * PANGO_SCALE, y * PANGO_SCALE, &index, &trailing); text = pango_layout_get_text (layout); return g_utf8_offset_to_pointer (text + index, trailing) - text; } #define SCROLL_WAIT_TIME 30000 static gboolean _blink_scroll_timeout (gpointer data) { ECellTextView *text_view = (ECellTextView *) data; ECellText *ect = E_CELL_TEXT (((ECellView *) text_view)->ecell); CellEdit *edit = text_view->edit; gulong current_time; gboolean scroll = FALSE; gboolean redraw = FALSE; gint width, height; g_timer_elapsed (edit->timer, ¤t_time); if (edit->scroll_start + SCROLL_WAIT_TIME > 1000000) { if (current_time > edit->scroll_start - (1000000 - SCROLL_WAIT_TIME) && current_time < edit->scroll_start) scroll = TRUE; } else { if (current_time > edit->scroll_start + SCROLL_WAIT_TIME || current_time < edit->scroll_start) scroll = TRUE; } pango_layout_get_pixel_size (edit->layout, &width, &height); if (scroll && edit->button_down) { /* FIXME: Copy this for y. */ if (edit->lastx - ect->x > edit->cell_width) { if (edit->xofs_edit < width - edit->cell_width) { edit->xofs_edit += 4; if (edit->xofs_edit > width - edit->cell_width + 1) edit->xofs_edit = width - edit->cell_width + 1; redraw = TRUE; } } if (edit->lastx - ect->x < 0 && edit->xofs_edit > 0) { edit->xofs_edit -= 4; if (edit->xofs_edit < 0) edit->xofs_edit = 0; redraw = TRUE; } if (redraw) { ETextEventProcessorEvent e_tep_event; e_tep_event.type = GDK_MOTION_NOTIFY; e_tep_event.motion.state = edit->last_state; e_tep_event.motion.time = 0; e_tep_event.motion.position = get_position_from_xy (edit, edit->lastx, edit->lasty); _get_tep (edit); e_text_event_processor_handle_event (edit->tep, &e_tep_event); edit->scroll_start = current_time; } } if (!((current_time / 500000) % 2)) { if (!edit->show_cursor) redraw = TRUE; edit->show_cursor = TRUE; } else { if (edit->show_cursor) redraw = TRUE; edit->show_cursor = FALSE; } if (redraw) { ect_queue_redraw (text_view, edit->view_col, edit->row); } return TRUE; } static gint next_word (CellEdit *edit, gint start) { gchar *p; gint length; length = strlen (edit->text); if (start >= length) return length; p = g_utf8_next_char (edit->text + start); while (*p && g_unichar_validate (g_utf8_get_char (p))) { gunichar unival = g_utf8_get_char (p); if (g_unichar_isspace (unival)) return p - edit->text; p = g_utf8_next_char (p); } return p - edit->text; } static gint _get_position (ECellTextView *text_view, ETextEventProcessorCommand *command) { gint length; CellEdit *edit = text_view->edit; gchar *p; gint unival; gint index; gint trailing; switch (command->position) { case E_TEP_VALUE: return command->value; case E_TEP_SELECTION: return edit->selection_end; case E_TEP_START_OF_BUFFER: return 0; /* fixme: this probably confuses TEP */ case E_TEP_END_OF_BUFFER: return strlen (edit->text); case E_TEP_START_OF_LINE: if (edit->selection_end < 1) return 0; p = g_utf8_find_prev_char (edit->text, edit->text + edit->selection_end); if (p == edit->text) return 0; p = g_utf8_find_prev_char (edit->text, p); while (p && p > edit->text) { if (*p == '\n') return p - edit->text + 1; p = g_utf8_find_prev_char (edit->text, p); } return 0; case E_TEP_END_OF_LINE: length = strlen (edit->text); if (edit->selection_end >= length) return length; p = g_utf8_next_char (edit->text + edit->selection_end); while (*p && g_unichar_validate (g_utf8_get_char (p))) { if (*p == '\n') return p - edit->text; p = g_utf8_next_char (p); } return p - edit->text; case E_TEP_FORWARD_CHARACTER: length = strlen (edit->text); if (edit->selection_end >= length) return length; p = g_utf8_next_char (edit->text + edit->selection_end); return p - edit->text; case E_TEP_BACKWARD_CHARACTER: if (edit->selection_end < 1) return 0; p = g_utf8_find_prev_char (edit->text, edit->text + edit->selection_end); if (p == NULL) return 0; return p - edit->text; case E_TEP_FORWARD_WORD: return next_word (edit, edit->selection_end); case E_TEP_BACKWARD_WORD: if (edit->selection_end < 1) return 0; p = g_utf8_find_prev_char (edit->text, edit->text + edit->selection_end); if (p == edit->text) return 0; p = g_utf8_find_prev_char (edit->text, p); while (p && p > edit->text && g_unichar_validate (g_utf8_get_char (p))) { unival = g_utf8_get_char (p); if (g_unichar_isspace (unival)) { return (g_utf8_next_char (p) - edit->text); } p = g_utf8_find_prev_char (edit->text, p); } return 0; case E_TEP_FORWARD_LINE: pango_layout_move_cursor_visually (edit->layout, TRUE, edit->selection_end, 0, TRUE, &index, &trailing); index = g_utf8_offset_to_pointer (edit->text + index, trailing) - edit->text; if (index < 0) return 0; length = strlen (edit->text); if (index >= length) return length; return index; case E_TEP_BACKWARD_LINE: pango_layout_move_cursor_visually (edit->layout, TRUE, edit->selection_end, 0, TRUE, &index, &trailing); index = g_utf8_offset_to_pointer (edit->text + index, trailing) - edit->text; if (index < 0) return 0; length = strlen (edit->text); if (index >= length) return length; return index; case E_TEP_FORWARD_PARAGRAPH: case E_TEP_BACKWARD_PARAGRAPH: case E_TEP_FORWARD_PAGE: case E_TEP_BACKWARD_PAGE: return edit->selection_end; default: return edit->selection_end; } g_return_val_if_reached (0); return 0; /* Kill warning */ } static void _delete_selection (ECellTextView *text_view) { CellEdit *edit = text_view->edit; gint length; gchar *sp, *ep; if (edit->selection_end == edit->selection_start) return; if (edit->selection_end < edit->selection_start) { edit->selection_end ^= edit->selection_start; edit->selection_start ^= edit->selection_end; edit->selection_end ^= edit->selection_start; } sp = edit->text + edit->selection_start; ep = edit->text + edit->selection_end; length = strlen (ep) + 1; memmove (sp, ep, length); edit->selection_end = edit->selection_start; g_signal_emit (VIEW_TO_CELL (text_view), signals[TEXT_DELETED], 0, text_view, edit->selection_start, ep-sp, edit->row, edit->model_col); } /* fixme: */ /* NB! We expect value to be length IN BYTES */ static void _insert (ECellTextView *text_view, const gchar *string, gint value) { CellEdit *edit = text_view->edit; gchar *temp; if (value <= 0) return; edit->selection_start = MIN (strlen (edit->text), edit->selection_start); temp = g_new (gchar, strlen (edit->text) + value + 1); strncpy (temp, edit->text, edit->selection_start); strncpy (temp + edit->selection_start, string, value); strcpy (temp + edit->selection_start + value, edit->text + edit->selection_end); g_free (edit->text); edit->text = temp; edit->selection_start += value; edit->selection_end = edit->selection_start; g_signal_emit (VIEW_TO_CELL (text_view), signals[TEXT_INSERTED], 0, text_view, edit->selection_end-value, value, edit->row, edit->model_col); } static void capitalize (CellEdit *edit, gint start, gint end, ETextEventProcessorCaps type) { ECellTextView *text_view = edit->text_view; gboolean first = TRUE; gint character_length = g_utf8_strlen (edit->text + start, start - end); const gchar *p = edit->text + start; const gchar *text_end = edit->text + end; gchar *new_text = g_new0 (char, character_length * 6 + 1); gchar *output = new_text; while (p && *p && p < text_end && g_unichar_validate (g_utf8_get_char (p))) { gunichar unival = g_utf8_get_char (p); gunichar newval = unival; switch (type) { case E_TEP_CAPS_UPPER: newval = g_unichar_toupper (unival); break; case E_TEP_CAPS_LOWER: newval = g_unichar_tolower (unival); break; case E_TEP_CAPS_TITLE: if (g_unichar_isalpha (unival)) { if (first) newval = g_unichar_totitle (unival); else newval = g_unichar_tolower (unival); first = FALSE; } else { first = TRUE; } break; } g_unichar_to_utf8 (newval, output); output = g_utf8_next_char (output); p = g_utf8_next_char (p); } *output = 0; edit->selection_end = end; edit->selection_start = start; _delete_selection (text_view); _insert (text_view, new_text, output - new_text); g_free (new_text); } static void e_cell_text_view_command (ETextEventProcessor *tep, ETextEventProcessorCommand *command, gpointer data) { CellEdit *edit = (CellEdit *) data; ECellTextView *text_view = edit->text_view; ECellText *ect = E_CELL_TEXT (text_view->cell_view.ecell); gboolean change = FALSE; gboolean redraw = FALSE; gint sel_start, sel_end; /* If the EText isn't editable, then ignore any commands that would modify the text. */ if (!ect->editable && (command->action == E_TEP_DELETE || command->action == E_TEP_INSERT || command->action == E_TEP_PASTE || command->action == E_TEP_GET_SELECTION)) return; switch (command->action) { case E_TEP_MOVE: edit->selection_start = _get_position (text_view, command); edit->selection_end = edit->selection_start; if (edit->timer) { g_timer_reset (edit->timer); } redraw = TRUE; break; case E_TEP_SELECT: edit->selection_end = _get_position (text_view, command); sel_start = MIN (edit->selection_start, edit->selection_end); sel_end = MAX (edit->selection_start, edit->selection_end); if (sel_start != sel_end) { e_cell_text_view_supply_selection (edit, command->time, GDK_SELECTION_PRIMARY, edit->text + sel_start, sel_end - sel_start); } else if (edit->timer) { g_timer_reset (edit->timer); } redraw = TRUE; break; case E_TEP_DELETE: if (edit->selection_end == edit->selection_start) { edit->selection_end = _get_position (text_view, command); } _delete_selection (text_view); if (edit->timer) { g_timer_reset (edit->timer); } redraw = TRUE; change = TRUE; break; case E_TEP_INSERT: if (!edit->preedit_length && edit->selection_end != edit->selection_start) { _delete_selection (text_view); } _insert (text_view, command->string, command->value); if (edit->timer) { g_timer_reset (edit->timer); } redraw = TRUE; change = TRUE; break; case E_TEP_COPY: sel_start = MIN (edit->selection_start, edit->selection_end); sel_end = MAX (edit->selection_start, edit->selection_end); if (sel_start != sel_end) { e_cell_text_view_supply_selection (edit, command->time, clipboard_atom, edit->text + sel_start, sel_end - sel_start); } if (edit->timer) { g_timer_reset (edit->timer); } break; case E_TEP_PASTE: e_cell_text_view_get_selection (edit, clipboard_atom, command->time); if (edit->timer) { g_timer_reset (edit->timer); } redraw = TRUE; change = TRUE; break; case E_TEP_GET_SELECTION: e_cell_text_view_get_selection (edit, GDK_SELECTION_PRIMARY, command->time); break; case E_TEP_ACTIVATE: e_table_item_leave_edit_ (text_view->cell_view.e_table_item_view); break; case E_TEP_SET_SELECT_BY_WORD: edit->select_by_word = command->value; break; case E_TEP_GRAB: edit->actions = E_CELL_GRAB; break; case E_TEP_UNGRAB: edit->actions = E_CELL_UNGRAB; break; case E_TEP_CAPS: if (edit->selection_start == edit->selection_end) { capitalize (edit, edit->selection_start, next_word (edit, edit->selection_start), command->value); } else { gint selection_start = MIN (edit->selection_start, edit->selection_end); gint selection_end = edit->selection_start + edit->selection_end - selection_start; /* Slightly faster than MAX */ capitalize (edit, selection_start, selection_end, command->value); } if (edit->timer) { g_timer_reset (edit->timer); } redraw = TRUE; change = TRUE; break; case E_TEP_NOP: break; } if (change) { if (edit->layout) g_object_unref (edit->layout); edit->layout = build_layout (text_view, edit->row, edit->text, edit->cell_width); } if (!edit->button_down) { PangoRectangle strong_pos, weak_pos; pango_layout_get_cursor_pos (edit->layout, edit->selection_end, &strong_pos, &weak_pos); if (strong_pos.x != weak_pos.x || strong_pos.y != weak_pos.y || strong_pos.width != weak_pos.width || strong_pos.height != weak_pos.height) { if (show_pango_rectangle (edit, weak_pos)) redraw = TRUE; } if (show_pango_rectangle (edit, strong_pos)) { redraw = TRUE; } } if (redraw) { ect_queue_redraw (text_view, edit->view_col, edit->row); } } static void e_cell_text_view_supply_selection (CellEdit *edit, guint time, GdkAtom selection, gchar *data, gint length) { #if DO_SELECTION GtkClipboard *clipboard; clipboard = gtk_widget_get_clipboard (GTK_WIDGET (edit->text_view->canvas), selection); if (selection == GDK_SELECTION_PRIMARY) { edit->has_selection = TRUE; } gtk_clipboard_set_text (clipboard, data, length); #endif } #ifdef DO_SELECTION static void paste_received (GtkClipboard *clipboard, const gchar *text, gpointer data) { CellEdit *edit; g_return_if_fail (data); edit = (CellEdit *) data; if (text && g_utf8_validate (text, strlen (text), NULL)) { ETextEventProcessorCommand command; command.action = E_TEP_INSERT; command.position = E_TEP_SELECTION; command.string = (gchar *) text; command.value = strlen (text); command.time = GDK_CURRENT_TIME; e_cell_text_view_command (edit->tep, &command, edit); } } #endif static void e_cell_text_view_get_selection (CellEdit *edit, GdkAtom selection, guint32 time) { #if DO_SELECTION gtk_clipboard_request_text (gtk_widget_get_clipboard (GTK_WIDGET (edit->text_view->canvas), selection), paste_received, edit); #endif } static void _get_tep (CellEdit *edit) { if (!edit->tep) { edit->tep = e_text_event_processor_emacs_like_new (); g_signal_connect (edit->tep, "command", G_CALLBACK (e_cell_text_view_command), (gpointer) edit); } } /** * e_cell_text_set_selection: * @cell_view: the given cell view * @col: column of the given cell in the view * @row: row of the given cell in the view * @start: start offset of the selection * @end: end offset of the selection * * Sets the selection of given text cell. * If the current editing cell is not the given cell, this function * will return FALSE; * * If success, the [start, end) part of the text will be selected. * * This API is most likely to be used by a11y implementations. * * Returns: whether the action is successful. */ gboolean e_cell_text_set_selection (ECellView *cell_view, gint col, gint row, gint start, gint end) { ECellTextView *ectv; CellEdit *edit; ETextEventProcessorCommand command1, command2; g_return_val_if_fail (cell_view != NULL, FALSE); ectv = (ECellTextView *) cell_view; edit = ectv->edit; if (!edit) return FALSE; if (edit->view_col != col || edit->row != row) return FALSE; command1.action = E_TEP_MOVE; command1.position = E_TEP_VALUE; command1.value = start; e_cell_text_view_command (edit->tep, &command1, edit); command2.action = E_TEP_SELECT; command2.position = E_TEP_VALUE; command2.value = end; e_cell_text_view_command (edit->tep, &command2, edit); return TRUE; } /** * e_cell_text_get_selection: * @cell_view: the given cell view * @col: column of the given cell in the view * @row: row of the given cell in the view * @start: a pointer to an gint value indicates the start offset of the selection * @end: a pointer to an gint value indicates the end offset of the selection * * Gets the selection of given text cell. * If the current editing cell is not the given cell, this function * will return FALSE; * * This API is most likely to be used by a11y implementations. * * Returns: whether the action is successful. */ gboolean e_cell_text_get_selection (ECellView *cell_view, gint col, gint row, gint *start, gint *end) { ECellTextView *ectv; CellEdit *edit; g_return_val_if_fail (cell_view != NULL, FALSE); ectv = (ECellTextView *) cell_view; edit = ectv->edit; if (!edit) return FALSE; if (edit->view_col != col || edit->row != row) return FALSE; if (start) *start = edit->selection_start; if (end) *end = edit->selection_end; return TRUE; } /** * e_cell_text_copy_clipboard: * @cell_view: the given cell view * @col: column of the given cell in the view * @row: row of the given cell in the view * * Copys the selected text to clipboard. * * This API is most likely to be used by a11y implementations. */ void e_cell_text_copy_clipboard (ECellView *cell_view, gint col, gint row) { ECellTextView *ectv; CellEdit *edit; ETextEventProcessorCommand command; g_return_if_fail (cell_view != NULL); ectv = (ECellTextView *) cell_view; edit = ectv->edit; if (!edit) return; if (edit->view_col != col || edit->row != row) return; command.action = E_TEP_COPY; command.time = GDK_CURRENT_TIME; e_cell_text_view_command (edit->tep, &command, edit); } /** * e_cell_text_paste_clipboard: * @cell_view: the given cell view * @col: column of the given cell in the view * @row: row of the given cell in the view * * Pastes the text from the clipboardt. * * This API is most likely to be used by a11y implementations. */ void e_cell_text_paste_clipboard (ECellView *cell_view, gint col, gint row) { ECellTextView *ectv; CellEdit *edit; ETextEventProcessorCommand command; g_return_if_fail (cell_view != NULL); ectv = (ECellTextView *) cell_view; edit = ectv->edit; if (!edit) return; if (edit->view_col != col || edit->row != row) return; command.action = E_TEP_PASTE; command.time = GDK_CURRENT_TIME; e_cell_text_view_command (edit->tep, &command, edit); } /** * e_cell_text_delete_selection: * @cell_view: the given cell view * @col: column of the given cell in the view * @row: row of the given cell in the view * * Deletes the selected text of the cell. * * This API is most likely to be used by a11y implementations. */ void e_cell_text_delete_selection (ECellView *cell_view, gint col, gint row) { ECellTextView *ectv; CellEdit *edit; ETextEventProcessorCommand command; g_return_if_fail (cell_view != NULL); ectv = (ECellTextView *) cell_view; edit = ectv->edit; if (!edit) return; if (edit->view_col != col || edit->row != row) return; command.action = E_TEP_DELETE; command.position = E_TEP_SELECTION; e_cell_text_view_command (edit->tep, &command, edit); } /** * e_cell_text_get_text_by_view: * @cell_view: the given cell view * @col: column of the given cell in the model * @row: row of the given cell in the model * * Get the cell's text directly from CellEdit, * during editting this cell, the cell's text value maybe inconsistant * with the text got from table_model. * The caller should free the text after using it. * * This API is most likely to be used by a11y implementations. */ gchar * e_cell_text_get_text_by_view (ECellView *cell_view, gint col, gint row) { ECellTextView *ectv; CellEdit *edit; gchar *ret, *model_text; g_return_val_if_fail (cell_view != NULL, NULL); ectv = (ECellTextView *) cell_view; edit = ectv->edit; if (edit && ectv->edit->row == row && ectv->edit->model_col == col) { /* being editted now */ ret = g_strdup (edit->text); } else{ model_text = e_cell_text_get_text (E_CELL_TEXT (cell_view->ecell), cell_view->e_table_model, col, row); ret = g_strdup (model_text); e_cell_text_free_text (E_CELL_TEXT (cell_view->ecell), model_text); } return ret; }