/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ /* e-cell-text.c - Text cell renderer * Copyright (C) 2000 Ximian, Inc. * * Authors: Miguel de Icaza * Chris Lahey * * (C) 1999, 2000 Ximian, Inc. * * 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 * * TODO: * Clean up UTF-8 handling * UTF-8 selection */ #include #include #include #include #include #include /* for BlackPixel */ #include #include #include #include #include #include #include #include #include "e-cell-text.h" #include "gal/util/e-util.h" #include "gal/widgets/e-canvas.h" #include "gal/widgets/e-font.h" #include "gal/widgets/e-unicode.h" #include "e-table-item.h" #include "gal/util/e-text-event-processor.h" #include "gal/e-text/e-text.h" #include "gal/util/e-text-event-processor-emacs-like.h" #include "e-table-tooltip.h" #define ECT_CLASS(c) (E_CELL_TEXT_CLASS(GTK_OBJECT((c))->klass)) /* This defines a line of text */ struct line { char *text; /* Line's text UTF-8, it is a pointer into the text->text string */ int length; /* Line's length in BYTES */ int width; /* Line's width in pixels */ int ellipsis_length; /* Length before adding ellipsis in BYTES */ }; /* Object argument IDs */ enum { ARG_0, ARG_STRIKEOUT_COLUMN, ARG_BOLD_COLUMN, ARG_COLOR_COLUMN, ARG_EDITABLE, }; enum { E_SELECTION_PRIMARY, E_SELECTION_CLIPBOARD }; static GdkAtom clipboard_atom = GDK_NONE; #define PARENT_TYPE e_cell_get_type () #define TEXT_PAD 4 typedef struct { gpointer lines; /* Text split into lines (private field) */ int num_lines; /* Number of lines of text */ int max_width; int ref_count; } ECellTextLineBreaks; typedef struct _CellEdit CellEdit; typedef struct { ECellView cell_view; GdkGC *gc; EFont *font; GdkCursor *i_cursor; GdkBitmap *stipple; /* Stipple for text */ GnomeCanvas *canvas; /* * During editing. */ CellEdit *edit; int xofs, yofs; /* This gets added to the x and y for the cell text. */ double ellipsis_width[2]; /* The width of the ellipsis. */ } ECellTextView; typedef struct _CurrentCell{ ECellTextView *text_view; int width; char *text; int model_col, view_col, row; ECellTextLineBreaks *breaks; EFontStyle style; } CurrentCell; #define CURRENT_CELL(x) ((CurrentCell *)(x)) struct _CellEdit { CurrentCell cell; char *old_text; /* * Where the editing is taking place */ int 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. */ int selection_start; /* Start of selection - IN BYTES */ int 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 */ /* Hmmm... this should probably be in native encoding? */ GtkWidget *invisible; /* For selection handling */ gboolean has_selection; /* TRUE if we have the selection */ gchar *primary_selection; /* Primary selection text */ gint primary_length; /* Primary selection text length in BYTES */ gchar *clipboard_selection; /* Clipboard selection text */ gint clipboard_length; /* Clipboard selection text length in BYTES */ guint pointer_in : 1; guint default_cursor_shown : 1; 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, char *data, gint length); static GtkWidget *e_cell_text_view_get_invisible (CellEdit *edit); static void _selection_clear_event (GtkInvisible *invisible, GdkEventSelection *event, CellEdit *edit); static void _selection_get (GtkInvisible *invisible, GtkSelectionData *selection_data, guint info, guint time_stamp, CellEdit *edit); static void _selection_received (GtkInvisible *invisible, GtkSelectionData *selection_data, guint time, CellEdit *edit); static int number_of_lines (char *text); static void split_into_lines (CurrentCell *cell); static void unref_lines (CurrentCell *cell); static void calc_line_widths (CurrentCell *cell); static int get_line_ypos (CurrentCell *cell, struct line *line); static int get_line_xpos (CurrentCell *cell, struct line *line); static void _get_tep (CellEdit *edit); static gint _get_position_from_xy (CurrentCell *cell, gint x, gint y); static void _get_xy_from_position (CurrentCell *cell, gint position, gint *xp, gint *yp); static gboolean _blink_scroll_timeout (gpointer data); static void build_current_cell (CurrentCell *cell, ECellTextView *text_view, int model_col, int view_col, int row); static void unbuild_current_cell (CurrentCell *cell); static void calc_ellipsis (ECellTextView *text_view); static void ect_free_color (gchar *color_spec, GdkColor *color, GdkColormap *colormap); static GdkColor* e_cell_text_get_color (ECellTextView *cell_view, gchar *color_spec); static ECellClass *parent_class; static char * ect_get_text (ECellText *cell, ETableModel *model, int col, int row) { if (ECT_CLASS(cell)->get_text) return ECT_CLASS(cell)->get_text (cell, model, col, row); else return NULL; } static void ect_free_text (ECellText *cell, char *text) { if (ECT_CLASS(cell)->free_text) ECT_CLASS(cell)->free_text (cell, text); } static char * ect_real_get_text (ECellText *cell, ETableModel *model, int col, int row) { return e_table_model_value_at(model, col, row); } static void ect_real_free_text (ECellText *cell, char *text) { } static void ect_queue_redraw (ECellTextView *text_view, int view_col, int view_row) { e_table_item_redraw_range ( text_view->cell_view.e_table_item_view, view_col, view_row, view_col, view_row); } /* * Accept the currently edited text. if it's the same as what's in the cell, do nothing. */ static void ect_accept_edits (ECellTextView *text_view) { CurrentCell *cell = (CurrentCell *) text_view->edit; if (strcmp (text_view->edit->old_text, cell->text)) { e_table_model_set_value_at (text_view->cell_view.e_table_model, cell->model_col, cell->row, cell->text); } } /* * Shuts down the editing process */ static void ect_stop_editing (ECellTextView *text_view) { CellEdit *edit = text_view->edit; int row, view_col; if (!edit) return; row = edit->cell.row; view_col = edit->cell.view_col; g_free (edit->old_text); edit->old_text = NULL; g_free (edit->cell.text); edit->cell.text = NULL; if (edit->invisible) gtk_widget_unref (edit->invisible); if (edit->tep) gtk_object_unref (GTK_OBJECT(edit->tep)); if (edit->primary_selection) g_free (edit->primary_selection); if (edit->clipboard_selection) g_free (edit->clipboard_selection); if (! edit->default_cursor_shown){ gdk_window_set_cursor (GTK_WIDGET(text_view->canvas)->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_free (edit); text_view->edit = NULL; ect_queue_redraw (text_view, view_col, row); } /* * Cancels the edits */ static void ect_cancel_edit (ECellTextView *text_view) { ect_stop_editing (text_view); } /* * ECell::new_view method */ static ECellView * ect_new_view (ECell *ecell, ETableModel *table_model, void *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->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; g_free (text_view); } /* * ECell::realize method */ static void ect_realize (ECellView *ecell_view) { ECellTextView *text_view = (ECellTextView *) ecell_view; ECellText *ect = (ECellText *) ecell_view->ecell; text_view->gc = gdk_gc_new (GTK_WIDGET (text_view->canvas)->window); text_view->i_cursor = gdk_cursor_new (GDK_XTERM); if (ect->font_name){ text_view->font = e_font_from_gdk_name (ect->font_name); } if (!text_view->font){ gdk_font_ref (GTK_WIDGET (text_view->canvas)->style->font); text_view->font = e_font_from_gdk_font (GTK_WIDGET (text_view->canvas)->style->font); } calc_ellipsis (text_view); if (parent_class->realize) (* parent_class->realize) (ecell_view); } /* * ECell::unrealize method */ static void ect_unrealize (ECellView *ecv) { ECellTextView *text_view = (ECellTextView *) ecv; ECellText *ect = (ECellText*) ecv->ecell; GdkColormap *colormap; gdk_gc_unref (text_view->gc); text_view->gc = NULL; if (text_view->edit){ ect_cancel_edit (text_view); } if (text_view->font) e_font_unref (text_view->font); if (text_view->stipple) gdk_bitmap_unref (text_view->stipple); gdk_cursor_destroy (text_view->i_cursor); if (ect->colors) { colormap = gtk_widget_get_colormap (GTK_WIDGET (text_view->canvas)); g_hash_table_foreach (ect->colors, (GHFunc) ect_free_color, colormap); g_hash_table_destroy (ect->colors); ect->colors = NULL; } if (parent_class->unrealize) (* parent_class->unrealize) (ecv); } static void ect_free_color (gchar *color_spec, GdkColor *color, GdkColormap *colormap) { g_free (color_spec); /* This frees the color. Note we don't free it if it is the special value. */ if (color != (GdkColor*) 1) { gdk_colors_free (colormap, &color->pixel, 1, 0); /* This frees the memory for the GdkColor. */ gdk_color_free (color); } } static void set_style(ECellView *ecell_view, CurrentCell *cell, int row) { EFontStyle style = E_FONT_PLAIN; ECellText *ect = E_CELL_TEXT (ecell_view->ecell); if (ect->bold_column >= 0 && e_table_model_value_at(ecell_view->e_table_model, ect->bold_column, row)) style = E_FONT_BOLD; cell->style = style; } /* * ECell::draw method */ static void ect_draw (ECellView *ecell_view, GdkDrawable *drawable, int model_col, int view_col, int row, ECellFlags flags, int x1, int y1, int x2, int y2) { /* New ECellText */ ECellText *ect = E_CELL_TEXT (ecell_view->ecell); ECellTextView *text_view = (ECellTextView *) ecell_view; GtkWidget *canvas = GTK_WIDGET (text_view->canvas); GdkRectangle rect, *clip_rect; struct line *lines; int i; int xpos, ypos; int start_char, end_char; int sel_start, sel_end; GdkRectangle sel_rect; GdkGC *fg_gc; EFont *font = text_view->font; const int height = e_font_height (text_view->font); CellEdit *edit = text_view->edit; gboolean edit_display = FALSE; ECellTextLineBreaks *linebreaks; GdkColor *foreground, *cell_foreground, *cursor_color; gchar *color_spec; gboolean selected; EFontStyle style = E_FONT_PLAIN; selected = flags & E_CELL_SELECTED; if (edit){ if ((edit->cell.view_col == view_col) && (edit->cell.row == row)) { edit_display = TRUE; fg_gc = canvas->style->fg_gc[edit->has_selection ? GTK_STATE_SELECTED : GTK_STATE_ACTIVE]; } else fg_gc = canvas->style->fg_gc[GTK_STATE_ACTIVE]; } else { fg_gc = canvas->style->fg_gc[GTK_STATE_ACTIVE]; } /* * Be a nice citizen: clip to the region we are supposed to draw on */ rect.x = x1; rect.y = y1; rect.width = x2 - x1; rect.height = y2 - y1; gdk_gc_set_clip_rectangle (text_view->gc, &rect); gdk_gc_set_clip_rectangle (fg_gc, &rect); clip_rect = ▭ if (selected){ if (flags & E_CELL_FOCUSED) foreground = &canvas->style->text [GTK_STATE_SELECTED]; else foreground = &canvas->style->text [GTK_STATE_ACTIVE]; } else { foreground = &canvas->style->text [GTK_STATE_NORMAL]; } cursor_color = foreground; if (ect->color_column != -1 && ! selected) { color_spec = e_table_model_value_at (ecell_view->e_table_model, ect->color_column, row); cell_foreground = e_cell_text_get_color (text_view, color_spec); if (cell_foreground) foreground = cell_foreground; } gdk_gc_set_foreground (text_view->gc, foreground); x1 += 4; y1 += 1; x2 -= 4; y2 -= 1; rect.x = x1; rect.y = y1; rect.width = x2 - x1; rect.height = y2 - y1; gdk_gc_set_clip_rectangle (text_view->gc, &rect); gdk_gc_set_clip_rectangle (fg_gc, &rect); clip_rect = ▭ if (edit_display){ CellEdit *edit = text_view->edit; CurrentCell *cell = CURRENT_CELL(edit); set_style(ecell_view, cell, row); style = cell->style; cell->width = x2 - x1; split_into_lines (cell); linebreaks = cell->breaks; lines = linebreaks->lines; ypos = get_line_ypos (cell, lines); ypos += e_font_ascent (text_view->font); ypos -= edit->yofs_edit; for (i = 0; i < linebreaks->num_lines; i++) { xpos = get_line_xpos (cell, lines); xpos -= edit->xofs_edit; /* start_char, end_char, sel_start and sel_end are IN BYTES */ start_char = lines->text - cell->text; end_char = start_char + lines->length; sel_start = edit->selection_start; sel_end = edit->selection_end; if (sel_start > sel_end){ sel_start ^= sel_end; sel_end ^= sel_start; sel_start ^= sel_end; } if (sel_start < start_char) sel_start = start_char; if (sel_end > end_char) sel_end = end_char; if (sel_start < sel_end){ sel_rect.x = xpos + x1 + e_font_utf8_text_width (font, style, lines->text, sel_start - start_char); sel_rect.y = ypos + y1 - e_font_ascent (font); sel_rect.width = e_font_utf8_text_width (font, style, lines->text + sel_start - start_char, sel_end - sel_start); sel_rect.height = height; gtk_paint_flat_box (canvas->style, drawable, edit->has_selection ? GTK_STATE_SELECTED : GTK_STATE_ACTIVE, GTK_SHADOW_NONE, clip_rect, canvas, "text", sel_rect.x, sel_rect.y, sel_rect.width, sel_rect.height); e_font_draw_utf8_text (drawable, font, style, text_view->gc, xpos + x1, ypos + y1, lines->text, sel_start - start_char); e_font_draw_utf8_text (drawable, font, style, fg_gc, xpos + x1 + e_font_utf8_text_width (font, style, lines->text, sel_start - start_char), ypos + y1, lines->text + sel_start - start_char, sel_end - sel_start); e_font_draw_utf8_text (drawable, font, style, text_view->gc, xpos + x1 + e_font_utf8_text_width (font, style, lines->text, sel_end - start_char), ypos + y1, lines->text + sel_end - start_char, end_char - sel_end); } else { e_font_draw_utf8_text (drawable, font, style, text_view->gc, xpos + x1, ypos + y1, lines->text, lines->length); } if (edit->selection_start == edit->selection_end && edit->selection_start >= start_char && edit->selection_start <= end_char && edit->show_cursor) { gdk_gc_set_foreground (text_view->gc, cursor_color); gdk_draw_rectangle (drawable, text_view->gc, TRUE, xpos + x1 + e_font_utf8_text_width (font, style, lines->text, sel_start - start_char), ypos + y1 - e_font_ascent (font), 1, height); } if (ect->strikeout_column >= 0 && e_table_model_value_at(ecell_view->e_table_model, ect->strikeout_column, row)) { gdk_draw_rectangle (drawable, text_view->gc, TRUE, x1, ypos + y1 - (e_font_ascent (font) / 2), x2 - x1, 1); } ypos += height; lines ++; } unref_lines (cell); } else { ECellTextLineBreaks *linebreaks; CurrentCell cell; build_current_cell (&cell, text_view, model_col, view_col, row); set_style(ecell_view, &cell, row); style = cell.style; cell.width = x2 - x1; split_into_lines (&cell); linebreaks = cell.breaks; lines = linebreaks->lines; ypos = get_line_ypos (&cell, lines); ypos += e_font_ascent (text_view->font); for (i = 0; i < linebreaks->num_lines; i++) { xpos = get_line_xpos (&cell, lines); if (ect->use_ellipsis && lines->ellipsis_length < lines->length) { e_font_draw_utf8_text (drawable, font, style, text_view->gc, xpos + x1, ypos + y1, lines->text, lines->ellipsis_length); e_font_draw_utf8_text (drawable, font, style, text_view->gc, xpos + x1 + lines->width - text_view->ellipsis_width[style], ypos + y1, ect->ellipsis ? ect->ellipsis : "...", ect->ellipsis ? strlen (ect->ellipsis) : 3); } else { e_font_draw_utf8_text (drawable, font, style, text_view->gc, xpos + x1, ypos + y1, lines->text, lines->length); } if (ect->strikeout_column >= 0 && e_table_model_value_at(ecell_view->e_table_model, ect->strikeout_column, row)) { gdk_draw_rectangle (drawable, text_view->gc, TRUE, x1, ypos + y1 - (e_font_ascent (font) / 2), x2 - x1, 1); } ypos += height; lines++; } unref_lines (&cell); unbuild_current_cell (&cell); } gdk_gc_set_clip_rectangle (text_view->gc, NULL); gdk_gc_set_clip_rectangle (fg_gc, NULL); } /* * Selects the entire string */ static void ect_edit_select_all (ECellTextView *text_view) { g_assert (text_view->edit); text_view->edit->selection_start = 0; text_view->edit->selection_end = strlen (text_view->edit->cell.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, int model_col, int view_col, int row, ECellFlags flags, ECellActions *actions) { ECellTextView *text_view = (ECellTextView *) ecell_view; ETextEventProcessorEvent e_tep_event; gboolean edit_display = FALSE; CellEdit *edit = text_view->edit; GtkWidget *canvas = GTK_WIDGET (text_view->canvas); gint return_val = 0; CurrentCell cell, *cellptr; if (flags & !E_CELL_EDITING) return 0; build_current_cell (&cell, text_view, model_col, view_col, row); if (edit){ if ((edit->cell.view_col == view_col) && (edit->cell.row == row)) { edit_display = TRUE; cellptr = CURRENT_CELL(edit); } else { cellptr = &cell; } } else { cellptr = &cell; } set_style(ecell_view, cellptr, row); e_tep_event.type = event->type; switch (event->type) { case GDK_FOCUS_CHANGE: break; case GDK_KEY_PRESS: /* Fall Through */ case GDK_KEY_RELEASE: if (event->key.keyval == GDK_Escape){ ect_cancel_edit (text_view); return_val = TRUE; 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; cellptr = CURRENT_CELL(edit); edit_display = TRUE; } if (edit_display) { GdkEventKey key = event->key; if (key.keyval == GDK_KP_Enter || key.keyval == GDK_Return){ 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); *actions = edit->actions; if (e_tep_event.key.string) g_free (e_tep_event.key.string); break; } } break; case GDK_BUTTON_PRESS: /* Fall Through */ case 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; cellptr = CURRENT_CELL(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 (cellptr, button.x, button.y); _get_tep (edit); 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 (cellptr, button.x, button.y); _get_tep (edit); 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 (cellptr, motion.x, motion.y); _get_tep (edit); 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){ gdk_window_set_cursor (canvas->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){ gdk_window_set_cursor (canvas->window, NULL); edit->default_cursor_shown = TRUE; } } break; default: break; } unbuild_current_cell (&cell); if (return_val) return return_val; #if 0 if (GNOME_CANVAS_ITEM_CLASS(parent_class)->event) return GNOME_CANVAS_ITEM_CLASS(parent_class)->event (item, event); #endif else return 0; } /* * ECell::height method */ static int ect_height (ECellView *ecell_view, int model_col, int view_col, int row) { ECellTextView *text_view = (ECellTextView *) ecell_view; EFont *font; ECellText *ect = E_CELL_TEXT(ecell_view->ecell); gchar *string; gint value; font = text_view->font; string = ect_get_text(ect, ecell_view->e_table_model, model_col, row); value = e_font_height (font) * number_of_lines(string) + TEXT_PAD; ect_free_text(ect, string); return value; } /* * ECellView::enter_edit method */ static void * ect_enter_edit (ECellView *ecell_view, int model_col, int view_col, int row) { ECellTextView *text_view = (ECellTextView *) ecell_view; CellEdit *edit; ECellText *ect = E_CELL_TEXT(ecell_view->ecell); char *temp; edit = g_new (CellEdit, 1); text_view->edit = edit; build_current_cell (CURRENT_CELL(edit), text_view, model_col, view_col, row); set_style(ecell_view, CURRENT_CELL(edit), row); 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->invisible = NULL; edit->primary_selection = NULL; edit->primary_length = 0; edit->clipboard_selection = NULL; edit->clipboard_length = 0; edit->pointer_in = FALSE; edit->default_cursor_shown = TRUE; temp = ect_get_text(ect, ecell_view->e_table_model, model_col, row); edit->old_text = g_strdup (temp); ect_free_text(ect, temp); edit->cell.text = g_strdup (edit->old_text); #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, int model_col, int view_col, int row, void *edit_context) { ECellTextView *text_view = (ECellTextView *) ecell_view; CellEdit *edit = text_view->edit; if (edit){ ect_accept_edits (text_view); ect_stop_editing (text_view); /* FIXME: edit is freed in ect_stop_editing() so I've commented this out - Damon. */ /*unbuild_current_cell (CURRENT_CELL(edit));*/ } else { /* * We did invoke this leave edit internally */ } } static void ect_print (ECellView *ecell_view, GnomePrintContext *context, int model_col, int view_col, int row, double width, double height) { GnomeFont *font = gnome_font_new ("Helvetica", 12); char *string; ECellText *ect = E_CELL_TEXT(ecell_view->ecell); string = ect_get_text(ect, ecell_view->e_table_model, model_col, row); gnome_print_gsave(context); if (gnome_print_moveto(context, 2, 2) == -1) /* FIXME */; if (gnome_print_lineto(context, width - 2, 2) == -1) /* FIXME */; if (gnome_print_lineto(context, width - 2, height - 2) == -1) /* FIXME */; if (gnome_print_lineto(context, 2, height - 2) == -1) /* FIXME */; if (gnome_print_lineto(context, 2, 2) == -1) /* FIXME */; if (gnome_print_clip(context) == -1) /* FIXME */; gnome_print_moveto(context, 2, (height - gnome_font_get_ascender(font) + gnome_font_get_descender(font)) / 2); gnome_print_setfont(context, font); gnome_print_show(context, string); gnome_print_grestore(context); ect_free_text(ect, string); } static gdouble ect_print_height (ECellView *ecell_view, GnomePrintContext *context, int model_col, int view_col, int row, double width) { return 16; } static int ect_max_width (ECellView *ecell_view, int model_col, int view_col) { /* New ECellText */ ECellTextView *text_view = (ECellTextView *) ecell_view; EFont *font; int row; int number_of_rows; int max_width = 0; font = text_view->font; number_of_rows = e_table_model_row_count (ecell_view->e_table_model); for (row = 0; row < number_of_rows; row++) { CurrentCell cell; struct line *line; int width; build_current_cell (&cell, text_view, model_col, view_col, row); split_into_lines (&cell); calc_line_widths (&cell); line = (struct line *)cell.breaks->lines; width = e_font_utf8_text_width (font, cell.style, line->text, line->length); max_width = MAX (max_width, width); unref_lines (&cell); unbuild_current_cell (&cell); } return max_width; } static gint tooltip_event (GtkWidget *window, GdkEvent *event, ETableTooltip *tooltip) { gint ret_val = FALSE; switch (event->type) { case GDK_LEAVE_NOTIFY: e_canvas_hide_tooltip (E_CANVAS(GNOME_CANVAS_ITEM(tooltip->eti)->canvas)); break; case GDK_BUTTON_PRESS: case GDK_BUTTON_RELEASE: if (event->type == GDK_BUTTON_RELEASE) { e_canvas_hide_tooltip (E_CANVAS(GNOME_CANVAS_ITEM(tooltip->eti)->canvas)); } event->button.x = tooltip->cx; event->button.y = tooltip->cy; gtk_signal_emit_by_name (GTK_OBJECT (tooltip->eti), "event", event, &ret_val); if (!ret_val) gtk_propagate_event (GTK_WIDGET(GNOME_CANVAS_ITEM(tooltip->eti)->canvas), event); ret_val = TRUE; break; case GDK_KEY_PRESS: e_canvas_hide_tooltip (E_CANVAS(GNOME_CANVAS_ITEM(tooltip->eti)->canvas)); gtk_signal_emit_by_name (GTK_OBJECT (tooltip->eti), "event", event, &ret_val); if (!ret_val) gtk_propagate_event (GTK_WIDGET(GNOME_CANVAS_ITEM(tooltip->eti)->canvas), event); ret_val = TRUE; break; default: break; } return ret_val; } static void ect_show_tooltip (ECellView *ecell_view, int model_col, int view_col, int row, int col_width, ETableTooltip *tooltip) { ECellTextView *text_view = (ECellTextView *) ecell_view; CurrentCell cell; struct line *lines; GtkWidget *canvas; int i; gdouble max_width; gboolean cut_off; double i2c[6]; ArtPoint origin = {0, 0}; ArtPoint pixel_origin; int canvas_x, canvas_y; GnomeCanvasItem *tooltip_text; double tooltip_width; double tooltip_height; double tooltip_x; double tooltip_y; GnomeCanvasItem *rect; double text_height; ECellText *ect = E_CELL_TEXT(ecell_view->ecell); GtkWidget *window; tooltip->timer = 0; build_current_cell (&cell, text_view, model_col, view_col, row); set_style(ecell_view, &cell, row); cell.width = col_width - 8; split_into_lines (&cell); calc_line_widths (&cell); cut_off = FALSE; for (lines = cell.breaks->lines, i = 0; i < cell.breaks->num_lines; lines++, i++) { if (lines->length > lines->ellipsis_length) { cut_off = TRUE; break; } } if (!cut_off) { tooltip->timer = 0; unref_lines (&cell); unbuild_current_cell (&cell); return; } gnome_canvas_item_i2c_affine (GNOME_CANVAS_ITEM (tooltip->eti), i2c); art_affine_point (&pixel_origin, &origin, i2c); gdk_window_get_origin (GTK_WIDGET (text_view->canvas)->window, &canvas_x, &canvas_y); pixel_origin.x += canvas_x; pixel_origin.y += canvas_y; pixel_origin.x -= (int) gtk_layout_get_hadjustment (GTK_LAYOUT (text_view->canvas))->value; pixel_origin.y -= (int) gtk_layout_get_vadjustment (GTK_LAYOUT (text_view->canvas))->value; window = gtk_window_new (GTK_WINDOW_POPUP); gtk_container_set_border_width (GTK_CONTAINER (window), 1); canvas = e_canvas_new (); gtk_container_add (GTK_CONTAINER (window), canvas); max_width = 0.0; for (lines = cell.breaks->lines, i = 0; i < cell.breaks->num_lines; lines++, i++) { gdouble line_width; line_width = e_font_utf8_text_width (text_view->font, cell.style, lines->text, lines->length); max_width = MAX (max_width, line_width); } text_height = e_font_height (text_view->font) * cell.breaks->num_lines + 4; rect = gnome_canvas_item_new (gnome_canvas_root (GNOME_CANVAS (canvas)), gnome_canvas_rect_get_type (), "x1", (double) 0.0, "y1", (double) 0.0, "x2", (double) max_width + 4, "y2", (double) text_height, "fill_color_gdk", tooltip->background, NULL); tooltip_text = gnome_canvas_item_new (gnome_canvas_root (GNOME_CANVAS (canvas)), e_text_get_type (), "anchor", GTK_ANCHOR_NW, /* "font_gdk", text_view->font, */ "bold", (gboolean) ect->bold_column >= 0 && e_table_model_value_at(ecell_view->e_table_model, ect->bold_column, row), "strikeout", (gboolean) ect->strikeout_column >= 0 && e_table_model_value_at(ecell_view->e_table_model, ect->strikeout_column, row), "fill_color_gdk", tooltip->foreground, "text", cell.text, "editable", FALSE, "clip_width", max_width, "clip_height", (double) text_height, "clip", TRUE, "line_wrap", FALSE, "justification", E_CELL_TEXT (text_view->cell_view.ecell)->justify, "draw_background", FALSE, NULL); tooltip_width = max_width; tooltip_height = text_height; tooltip_y = tooltip->y; switch (E_CELL_TEXT (text_view->cell_view.ecell)->justify) { case GTK_JUSTIFY_CENTER: tooltip_x = - tooltip_width / 2; break; case GTK_JUSTIFY_RIGHT: tooltip_x = tooltip_width / 2; break; case GTK_JUSTIFY_FILL: case GTK_JUSTIFY_LEFT: tooltip_x = tooltip->x; break; } gnome_canvas_item_move (tooltip_text, 3.0, 1.0); gnome_canvas_item_set (rect, "x2", (double) tooltip_width + 6, "y2", (double) tooltip->row_height + 1, NULL); gtk_widget_set_usize (window, tooltip_width + 6, tooltip->row_height + 1); gnome_canvas_set_scroll_region (GNOME_CANVAS (canvas), 0.0, 0.0, (double) tooltip_width + 6, (double) tooltip_height); gtk_widget_show (canvas); gtk_widget_realize (window); gtk_signal_connect (GTK_OBJECT (window), "event", GTK_SIGNAL_FUNC (tooltip_event), tooltip); e_canvas_popup_tooltip (E_CANVAS(text_view->canvas), window, pixel_origin.x + tooltip->x, pixel_origin.y + tooltip->y - 1); unref_lines (&cell); unbuild_current_cell (&cell); return; } /* * GtkObject::destroy method */ static void ect_destroy (GtkObject *object) { ECellText *ect = E_CELL_TEXT (object); g_free (ect->font_name); GTK_OBJECT_CLASS (parent_class)->destroy (object); } /* Set_arg handler for the text item */ static void ect_set_arg (GtkObject *object, GtkArg *arg, guint arg_id) { ECellText *text; text = E_CELL_TEXT (object); switch (arg_id) { case ARG_STRIKEOUT_COLUMN: text->strikeout_column = GTK_VALUE_INT (*arg); break; case ARG_BOLD_COLUMN: text->bold_column = GTK_VALUE_INT (*arg); break; case ARG_COLOR_COLUMN: text->color_column = GTK_VALUE_INT (*arg); break; case ARG_EDITABLE: text->editable = GTK_VALUE_BOOL (*arg) ? TRUE : FALSE; break; default: return; } } /* Get_arg handler for the text item */ static void ect_get_arg (GtkObject *object, GtkArg *arg, guint arg_id) { ECellText *text; text = E_CELL_TEXT (object); switch (arg_id) { case ARG_STRIKEOUT_COLUMN: GTK_VALUE_INT (*arg) = text->strikeout_column; break; case ARG_BOLD_COLUMN: GTK_VALUE_INT (*arg) = text->bold_column; break; case ARG_COLOR_COLUMN: GTK_VALUE_INT (*arg) = text->color_column; break; case ARG_EDITABLE: GTK_VALUE_BOOL (*arg) = text->editable ? TRUE : FALSE; break; default: arg->type = GTK_TYPE_INVALID; break; } } static void e_cell_text_class_init (GtkObjectClass *object_class) { ECellClass *ecc = (ECellClass *) object_class; ECellTextClass *ectc = (ECellTextClass *) object_class; object_class->destroy = ect_destroy; 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->print = ect_print; ecc->print_height = ect_print_height; ecc->max_width = ect_max_width; ecc->show_tooltip = ect_show_tooltip; ectc->get_text = ect_real_get_text; ectc->free_text = ect_real_free_text; object_class->get_arg = ect_get_arg; object_class->set_arg = ect_set_arg; parent_class = gtk_type_class (PARENT_TYPE); gtk_object_add_arg_type ("ECellText::strikeout_column", GTK_TYPE_INT, GTK_ARG_READWRITE, ARG_STRIKEOUT_COLUMN); gtk_object_add_arg_type ("ECellText::bold_column", GTK_TYPE_INT, GTK_ARG_READWRITE, ARG_BOLD_COLUMN); gtk_object_add_arg_type ("ECellText::color_column", GTK_TYPE_INT, GTK_ARG_READWRITE, ARG_COLOR_COLUMN); gtk_object_add_arg_type ("ECellText::editable", GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_EDITABLE); if (!clipboard_atom) clipboard_atom = gdk_atom_intern ("CLIPBOARD", FALSE); } static void e_cell_text_init (ECellText *ect) { ect->ellipsis = NULL; ect->use_ellipsis = TRUE; ect->strikeout_column = -1; ect->bold_column = -1; ect->color_column = -1; ect->editable = TRUE; } E_MAKE_TYPE(e_cell_text, "ECellText", ECellText, e_cell_text_class_init, e_cell_text_init, PARENT_TYPE); /** * e_cell_text_construct: * @cell: The cell to construct * @fontname: font to be used to render on the screen * @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 char *fontname, GtkJustification justify) { cell->font_name = g_strdup (fontname); cell->justify = justify; return E_CELL(cell); } /** * e_cell_text_new: * @fontname: font to be used to render on the screen * @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 char *. * * 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, bold, and color. * * The arguments "strikeout_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 char *fontname, GtkJustification justify) { ECellText *ect = gtk_type_new (e_cell_text_get_type ()); e_cell_text_construct(ect, fontname, justify); return (ECell *) ect; } /* Calculates the x position of the specified line of text, based on the text's justification */ static int get_line_xpos (CurrentCell *cell, struct line *line) { int x; ECellTextView *text_view = cell->text_view; ECellText *ect = E_CELL_TEXT (((ECellView *)cell->text_view)->ecell); x = text_view->xofs + ect->x; switch (ect->justify) { case GTK_JUSTIFY_RIGHT: x += cell->width - line->width; break; case GTK_JUSTIFY_CENTER: x += (cell->width - line->width) / 2; break; default: /* For GTK_JUSTIFY_LEFT, we don't have to do anything. We do not support * GTK_JUSTIFY_FILL, yet. */ break; } return x; } /* Calculates the x position of the specified line of text, based on the text's justification */ static int get_line_ypos (CurrentCell *cell, struct line *line) { int y; ECellTextView *text_view = cell->text_view; ECellText *ect = E_CELL_TEXT (((ECellView *)cell->text_view)->ecell); ECellTextLineBreaks *linebreaks = cell->breaks; struct line *lines = linebreaks->lines; EFont *font; font = text_view->font; y = text_view->yofs + ect->y; y += (line - lines) * e_font_height (font); return y; } /* fixme: Handle Font attributes */ /* position is in BYTES */ static void _get_xy_from_position (CurrentCell *cell, gint position, gint *xp, gint *yp) { if (xp || yp) { struct line *lines; int x, y; int j; ECellTextView *text_view = cell->text_view; ECellTextLineBreaks *linebreaks; EFont *font; font = text_view->font; split_into_lines (cell); linebreaks = cell->breaks; lines = linebreaks->lines; x = get_line_xpos (cell, lines); y = get_line_ypos (cell, lines); for (j = 0, lines = linebreaks->lines; j < linebreaks->num_lines; lines++, j++) { if (lines->text > cell->text + position) break; y += e_font_height (font); } lines --; y -= e_font_descent (font); x += e_font_utf8_text_width (font, cell->style, lines->text, position - (lines->text - cell->text)); if ((CellEdit *) cell == cell->text_view->edit){ x -= ((CellEdit *)cell)->xofs_edit; y -= ((CellEdit *)cell)->yofs_edit; } if (xp) *xp = x; if (yp) *yp = y; unref_lines (cell); } } static gint _get_position_from_xy (CurrentCell *cell, gint x, gint y) { int i, j; int xpos, ypos; struct line *lines; int return_val; gchar *p; ECellTextView *text_view = cell->text_view; ECellTextLineBreaks *linebreaks; EFont *font; font = text_view->font; split_into_lines (cell); linebreaks = cell->breaks; lines = linebreaks->lines; if ((CellEdit *) cell == cell->text_view->edit){ x += ((CellEdit *)cell)->xofs_edit; y += ((CellEdit *)cell)->yofs_edit; } ypos = get_line_ypos (cell, linebreaks->lines); j = 0; while (y > ypos) { ypos += e_font_height (font); j ++; } j--; if (j >= linebreaks->num_lines) j = linebreaks->num_lines - 1; if (j < 0) j = 0; i = 0; lines += j; xpos = get_line_xpos (cell, lines); for (p = lines->text; p < lines->text + lines->length && g_unichar_validate (g_utf8_get_char (p)); p = g_utf8_next_char (p)) { gint charwidth; charwidth = e_font_utf8_char_width (font, cell->style, p); xpos += charwidth / 2; if (xpos > x) { break; } xpos += (charwidth + 1) / 2; } return_val = p - cell->text; unref_lines (cell); return return_val; } #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; CurrentCell *cell = CURRENT_CELL(edit); gulong current_time; gboolean scroll = FALSE; gboolean redraw = FALSE; 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; } if (scroll && edit->button_down) { /* FIXME: Copy this for y. */ if (edit->lastx - ect->x > cell->width) { ECellTextLineBreaks *linebreaks; split_into_lines (cell); linebreaks = cell->breaks; if (edit->xofs_edit < linebreaks->max_width - cell->width) { edit->xofs_edit += 4; if (edit->xofs_edit > linebreaks->max_width - cell->width + 1) edit->xofs_edit = linebreaks->max_width - cell->width + 1; redraw = TRUE; } unref_lines (cell); } 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 (cell, 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->cell.view_col, edit->cell.row); } return TRUE; } static int _get_position (ECellTextView *text_view, ETextEventProcessorCommand *command) { int length; int x, y; CellEdit *edit = text_view->edit; CurrentCell *cell = CURRENT_CELL(edit); EFont *font; gchar *p; int unival; font = text_view->font; 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 (cell->text); case E_TEP_START_OF_LINE: if (edit->selection_end < 1) return 0; p = g_utf8_find_prev_char (cell->text, cell->text + edit->selection_end); if (p == cell->text) return 0; p = g_utf8_find_prev_char (cell->text, p); while (p && p > cell->text) { if (*p == '\n') return p - cell->text + 1; p = g_utf8_find_prev_char (cell->text, p); } return 0; case E_TEP_END_OF_LINE: length = strlen (cell->text); if (edit->selection_end >= length) return length; p = g_utf8_next_char (cell->text + edit->selection_end); while (*p && g_unichar_validate (g_utf8_get_char (p))) { if (*p == '\n') return p - cell->text; p = g_utf8_next_char (p); } return p - cell->text; case E_TEP_FORWARD_CHARACTER: length = strlen (cell->text); if (edit->selection_end >= length) return length; p = g_utf8_next_char (cell->text + edit->selection_end); return p - cell->text; case E_TEP_BACKWARD_CHARACTER: if (edit->selection_end < 1) return 0; p = g_utf8_find_prev_char (cell->text, cell->text + edit->selection_end); if (p == NULL) return 0; return p - cell->text; case E_TEP_FORWARD_WORD: length = strlen (cell->text); if (edit->selection_end >= length) return length; p = g_utf8_next_char (cell->text + edit->selection_end); while (*p && g_unichar_validate (g_utf8_get_char (p))) { unival = g_utf8_get_char (p); if (g_unichar_isspace (unival)) return p - cell->text; p = g_utf8_next_char (p); } return p - cell->text; case E_TEP_BACKWARD_WORD: if (edit->selection_end < 1) return 0; p = g_utf8_find_prev_char (cell->text, cell->text + edit->selection_end); if (p == cell->text) return 0; p = g_utf8_find_prev_char (cell->text, p); while (p && p > cell->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) - cell->text); } p = g_utf8_find_prev_char (cell->text, p); } return 0; case E_TEP_FORWARD_LINE: _get_xy_from_position (cell, edit->selection_end, &x, &y); y += e_font_height (font); return _get_position_from_xy (cell, x, y); case E_TEP_BACKWARD_LINE: _get_xy_from_position (cell, edit->selection_end, &x, &y); y -= e_font_height (font); return _get_position_from_xy (cell, x, y); 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_assert_not_reached (); return 0; /* Kill warning */ } static void _delete_selection (ECellTextView *text_view) { CellEdit *edit = text_view->edit; CurrentCell *cell = CURRENT_CELL(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 = cell->text + edit->selection_start; ep = cell->text + edit->selection_end; length = strlen (ep) + 1; memmove (sp, ep, length); edit->selection_end = edit->selection_start; } /* fixme: */ /* NB! We expect value to be length IN BYTES */ static void _insert (ECellTextView *text_view, char *string, int value) { CellEdit *edit = text_view->edit; CurrentCell *cell = CURRENT_CELL(edit); char *temp; if (value <= 0) return; temp = g_new (gchar, strlen (cell->text) + value + 1); strncpy (temp, cell->text, edit->selection_start); strncpy (temp + edit->selection_start, string, value); strcpy (temp + edit->selection_start + value, cell->text + edit->selection_end); g_free (cell->text); cell->text = temp; edit->selection_start += value; edit->selection_end = edit->selection_start; } static void e_cell_text_view_command (ETextEventProcessor *tep, ETextEventProcessorCommand *command, gpointer data) { CellEdit *edit = (CellEdit *) data; CurrentCell *cell = CURRENT_CELL(edit); ECellTextView *text_view = cell->text_view; ECellText *ect = E_CELL_TEXT (text_view->cell_view.ecell); gboolean change = FALSE; gboolean redraw = FALSE; int sel_start, sel_end; EFont *font; font = text_view->font; /* 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, cell->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->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, cell->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_NOP: break; } if (!edit->button_down) { int x; int i; struct line *lines; ECellTextLineBreaks *linebreaks; split_into_lines (cell); linebreaks = cell->breaks; for (lines = linebreaks->lines, i = 0; i < linebreaks->num_lines ; i++, lines ++) { if ((lines->text - cell->text) > edit->selection_end) { break; } } lines --; x = e_font_utf8_text_width (font, cell->style, lines->text, edit->selection_end - (lines->text - cell->text)); if (x < edit->xofs_edit) { edit->xofs_edit = x; redraw = TRUE; } if (2 + x - cell->width > edit->xofs_edit) { edit->xofs_edit = 2 + x - cell->width; redraw = TRUE; } unref_lines (cell); } if (redraw){ ect_queue_redraw (text_view, edit->cell.view_col, edit->cell.row); } #if 0 gnome_canvas_item_request_update (GNOME_CANVAS_ITEM(text)); #endif } static void _invisible_destroy (GtkInvisible *invisible, CellEdit *edit) { edit->invisible = NULL; } static GtkWidget *e_cell_text_view_get_invisible (CellEdit *edit) { GtkWidget *invisible; if (edit->invisible) { invisible = edit->invisible; } else { invisible = gtk_invisible_new (); edit->invisible = invisible; gtk_selection_add_target (invisible, GDK_SELECTION_PRIMARY, GDK_SELECTION_TYPE_STRING, E_SELECTION_PRIMARY); gtk_selection_add_target (invisible, clipboard_atom, GDK_SELECTION_TYPE_STRING, E_SELECTION_CLIPBOARD); gtk_signal_connect (GTK_OBJECT(invisible), "selection_get", GTK_SIGNAL_FUNC (_selection_get), edit); gtk_signal_connect (GTK_OBJECT(invisible), "selection_clear_event", GTK_SIGNAL_FUNC (_selection_clear_event), edit); gtk_signal_connect (GTK_OBJECT(invisible), "selection_received", GTK_SIGNAL_FUNC (_selection_received), edit); gtk_signal_connect (GTK_OBJECT(invisible), "destroy", GTK_SIGNAL_FUNC (_invisible_destroy), edit); } return invisible; } static void _selection_clear_event (GtkInvisible *invisible, GdkEventSelection *event, CellEdit *edit) { if (event->selection == GDK_SELECTION_PRIMARY) { g_free (edit->primary_selection); edit->primary_selection = NULL; edit->primary_length = 0; edit->has_selection = FALSE; #if 0 gnome_canvas_item_request_update (GNOME_CANVAS_ITEM(text)); #endif } else if (event->selection == clipboard_atom) { g_free (edit->clipboard_selection); edit->clipboard_selection = NULL; edit->clipboard_length = 0; } } static void _selection_get (GtkInvisible *invisible, GtkSelectionData *selection_data, guint info, guint time_stamp, CellEdit *edit) { switch (info) { case E_SELECTION_PRIMARY: gtk_selection_data_set (selection_data, GDK_SELECTION_TYPE_STRING, 8, edit->primary_selection, edit->primary_length); break; case E_SELECTION_CLIPBOARD: gtk_selection_data_set (selection_data, GDK_SELECTION_TYPE_STRING, 8, edit->clipboard_selection, edit->clipboard_length); break; } } /* fixme: What happens, if delivered string is not UTF-8? */ static void _selection_received (GtkInvisible *invisible, GtkSelectionData *selection_data, guint time, CellEdit *edit) { if (selection_data->length < 0 || selection_data->type != GDK_SELECTION_TYPE_STRING) { return; } else { ETextEventProcessorCommand command; command.action = E_TEP_INSERT; command.position = E_TEP_SELECTION; command.string = selection_data->data; command.value = selection_data->length; command.time = time; e_cell_text_view_command (edit->tep, &command, edit); } } static void e_cell_text_view_supply_selection (CellEdit *edit, guint time, GdkAtom selection, char *data, gint length) { gboolean successful; GtkWidget *invisible; invisible = e_cell_text_view_get_invisible (edit); if (selection == GDK_SELECTION_PRIMARY){ if (edit->primary_selection) { g_free (edit->primary_selection); } edit->primary_selection = g_strndup (data, length); edit->primary_length = length; } else if (selection == clipboard_atom) { if (edit->clipboard_selection) { g_free (edit->clipboard_selection); } edit->clipboard_selection = g_strndup (data, length); edit->clipboard_length = length; } successful = gtk_selection_owner_set (invisible, selection, time); if (selection == GDK_SELECTION_PRIMARY) edit->has_selection = successful; } static void e_cell_text_view_get_selection (CellEdit *edit, GdkAtom selection, guint32 time) { GtkWidget *invisible; invisible = e_cell_text_view_get_invisible (edit); gtk_selection_convert (invisible, selection, GDK_SELECTION_TYPE_STRING, time); } static void _get_tep (CellEdit *edit) { if (!edit->tep) { edit->tep = e_text_event_processor_emacs_like_new (); gtk_object_ref (GTK_OBJECT (edit->tep)); gtk_object_sink (GTK_OBJECT (edit->tep)); gtk_signal_connect (GTK_OBJECT(edit->tep), "command", GTK_SIGNAL_FUNC(e_cell_text_view_command), (gpointer) edit); } } static int number_of_lines (char *text) { int num_lines = 0; gchar *p; if (!text) return 0; for (p = text; *p && g_unichar_validate (g_utf8_get_char (p)); p = g_utf8_next_char (p)) { if (*p == '\n') num_lines++; } num_lines++; return num_lines; } /* Splits the text of the text item into lines */ static void split_into_lines (CurrentCell *cell) { char *p; struct line *lines; gint len; char *text = cell->text; ECellTextLineBreaks *linebreaks; if (! cell->breaks) { cell->breaks = g_new (ECellTextLineBreaks, 1); cell->breaks->ref_count = 1; } else { cell->breaks->ref_count ++; return; } linebreaks = cell->breaks; /* Check if already split. */ linebreaks->lines = NULL; linebreaks->num_lines = 0; if (!text) return; /* First, count the number of lines */ linebreaks->num_lines = number_of_lines(cell->text); /* Allocate array of lines and calculate split positions */ linebreaks->lines = lines = g_new0 (struct line, linebreaks->num_lines); len = 0; for (p = text; *p && g_unichar_validate (g_utf8_get_char (p)); p = g_utf8_next_char (p)) { if (len == 0) lines->text = p; if (*p == '\n') { lines->length = p - lines->text; lines++; len = 0; } else len++; } if (len == 0) lines->text = p; lines->length = p - lines->text; calc_line_widths (cell); } /* Free lines structure. */ static void unref_lines (CurrentCell *cell) { if (cell->breaks){ cell->breaks->ref_count --; if (cell->breaks->ref_count <= 0){ g_free (cell->breaks->lines); g_free (cell->breaks); cell->breaks = NULL; } } } static void calc_ellipsis (ECellTextView *text_view) { ECellText *ect = E_CELL_TEXT (((ECellView *)text_view)->ecell); EFont *font; font = text_view->font; if (font) { text_view->ellipsis_width[E_FONT_PLAIN] = e_font_utf8_text_width (font, E_FONT_PLAIN, ect->ellipsis ? ect->ellipsis : "...", ect->ellipsis ? strlen (ect->ellipsis) : 3); text_view->ellipsis_width[E_FONT_BOLD] = e_font_utf8_text_width (font, E_FONT_BOLD, ect->ellipsis ? ect->ellipsis : "...", ect->ellipsis ? strlen (ect->ellipsis) : 3); } } /* Calculates the line widths (in pixels) of the text's splitted lines */ static void calc_line_widths (CurrentCell *cell) { ECellTextView *text_view = cell->text_view; ECellText *ect = E_CELL_TEXT (((ECellView *)text_view)->ecell); ECellTextLineBreaks *linebreaks = cell->breaks; struct line *lines; int i; int j; EFont *font; font = text_view->font; lines = linebreaks->lines; linebreaks->max_width = 0; if (!lines) return; for (i = 0; i < linebreaks->num_lines; i++) { if (lines->length != 0) { if (font) { lines->width = e_font_utf8_text_width (font, cell->style, lines->text, lines->length); lines->ellipsis_length = 0; } else { lines->width = 0; } if (ect->use_ellipsis && (!(text_view->edit && cell->row == text_view->edit->cell.row && cell->view_col == text_view->edit->cell.view_col)) && lines->width > cell->width) { if (font) { lines->ellipsis_length = 0; for (j = 0; j < lines->length; j++){ if (e_font_utf8_text_width (font, cell->style, lines->text, j) + text_view->ellipsis_width[cell->style] < cell->width) { lines->ellipsis_length = j; } else break; } } else lines->ellipsis_length = 0; lines->width = e_font_utf8_text_width (font, cell->style, lines->text, lines->ellipsis_length) + text_view->ellipsis_width[cell->style]; } else lines->ellipsis_length = lines->length; if (lines->width > linebreaks->max_width) linebreaks->max_width = lines->width; } else { lines->width = 0; lines->ellipsis_length = 0; } lines++; } } static void build_current_cell (CurrentCell *cell, ECellTextView *text_view, int model_col, int view_col, int row) { ECellView *ecell_view = (ECellView *) text_view; ECellText *ect = E_CELL_TEXT (ecell_view->ecell); char *temp; cell->text_view = text_view; cell->model_col = model_col; cell->view_col = view_col; cell->row = row; cell->breaks = NULL; temp = ect_get_text(ect, ecell_view->e_table_model, model_col, row); cell->text = g_strdup(temp); ect_free_text(ect, temp); cell->width = e_table_header_get_column ( ((ETableItem *)ecell_view->e_table_item_view)->header, view_col)->width - 8; cell->style = 0; } static void unbuild_current_cell (CurrentCell *cell) { g_free(cell->text); cell->text = NULL; } static GdkColor* e_cell_text_get_color (ECellTextView *cell_view, gchar *color_spec) { ECellText *ect = E_CELL_TEXT (((ECellView*) cell_view)->ecell); GdkColormap *colormap; GdkColor *color, tmp_color; /* If the color spec is NULL we use the default color. */ if (color_spec == NULL) return NULL; /* Create the hash table if we haven't already. */ if (!ect->colors) ect->colors = g_hash_table_new (g_str_hash, g_str_equal); /* See if we've already allocated the color. Note that we use a special value of (GdkColor*) 1 in the hash to indicate that we've already tried and failed to allocate the color, so we don't keep trying to allocate it. */ color = g_hash_table_lookup (ect->colors, color_spec); if (color == (GdkColor*) 1) return NULL; if (color) return color; /* Try to parse the color. */ if (gdk_color_parse (color_spec, &tmp_color)) { colormap = gtk_widget_get_colormap (GTK_WIDGET (cell_view->canvas)); /* Try to allocate the color. */ if (gdk_color_alloc (colormap, &tmp_color)) color = gdk_color_copy (&tmp_color); } g_hash_table_insert (ect->colors, g_strdup (color_spec), color ? color : (GdkColor*) 1); return color; }