/*
* e-text.h - Text item for evolution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This 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 <http://www.gnu.org/licenses/>
*
*
* Authors:
* Chris Lahey <clahey@ximian.com>
* Jon Trowbridge <trow@ximian.com>
*
* A majority 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 <federico@nuclecu.unam.mx>
*
* Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
*
*/
#ifndef E_TEXT_H
#define E_TEXT_H
#include <gtk/gtk.h>
#include <e-util/e-text-event-processor.h>
#include <text/e-text-model.h>
#include <misc/e-canvas.h>
G_BEGIN_DECLS
/* Text item for the canvas. Text items are positioned by an anchor point and an anchor direction.
*
* A clipping rectangle may be specified for the text. The rectangle is anchored at the text's anchor
* point, and is specified by clipping width and height parameters. If the clipping rectangle is
* enabled, it will clip the text.
*
* In addition, x and y offset values may be specified. These specify an offset from the anchor
* position. If used in conjunction with the clipping rectangle, these could be used to implement
* simple scrolling of the text within the clipping rectangle.
*
* The following object arguments are available:
*
* name type read/write description
* ------------------------------------------------------------------------------------------
* text string RW The string of the text label
* bold boolean RW Bold?
* justification GtkJustification RW Justification for multiline text
* fill_color string W X color specification for text
* fill_color_gdk GdkColor* RW Pointer to an allocated GdkColor
* clip_width gdouble RW Width of clip rectangle
* clip_height gdouble RW Height of clip rectangle
* clip boolean RW Use clipping rectangle?
* fill_clip_rect boolean RW Whether the text item represents itself as being the size of the clipping rectangle.
* x_offset gdouble RW Horizontal offset distance from anchor position
* y_offset gdouble RW Vertical offset distance from anchor position
* text_width gdouble R Used to query the width of the rendered text
* text_height gdouble R Used to query the rendered height of the text
* width gdouble RW A synonym for clip_width
* height gdouble R A synonym for text_height
*
* These are currently ignored in the AA version:
* editable boolean RW Can this item be edited
* use_ellipsis boolean RW Whether to use ellipsises if text gets cut off. Meaningless if clip == false.
* ellipsis string RW The characters to use as ellipsis. NULL = "...".
* line_wrap boolean RW Line wrap when not editing.
* break_characters string RW List of characters to optionally break on.
* max_lines gint RW Number of lines possible when doing line wrap.
* draw_borders boolean RW Whether to draw borders.
* draw_background boolean RW Whether to draw the background.
* draw_button boolean RW This makes EText handle being the child of a button properly and highlighting as it should.
*/
#define E_TYPE_TEXT (e_text_get_type ())
#define E_TEXT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), E_TYPE_TEXT, EText))
#define E_TEXT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), E_TYPE_TEXT, ETextClass))
#define E_IS_TEXT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), E_TYPE_TEXT))
#define E_IS_TEXT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), E_TYPE_TEXT))
typedef struct _EText EText;
typedef struct _ETextClass ETextClass;
struct _EText {
GnomeCanvasItem item;
ETextModel *model;
gint model_changed_signal_id;
gint model_repos_signal_id;
const gchar *text; /* Text to display --- from the ETextModel */
gint preedit_len; /* preedit length to display */
gint preedit_pos; /* preedit cursor position */
PangoLayout *layout;
gint num_lines; /* Number of lines of text */
gchar *revert; /* Text to revert to */
GtkJustification justification; /* Justification for text */
gdouble clip_width; /* Width of optional clip rectangle */
gdouble clip_height; /* Height of optional clip rectangle */
gdouble xofs, yofs; /* Text offset distance from anchor position */
gint cx, cy; /* Top-left canvas coordinates for text */
gint text_cx, text_cy; /* Top-left canvas coordinates for text */
gint clip_cx, clip_cy; /* Top-left canvas coordinates for clip rectangle */
gint clip_cwidth, clip_cheight; /* Size of clip rectangle in pixels */
gint max_width; /* Maximum width of text lines */
gint width; /* Rendered text width in pixels */
gint height; /* Rendered text height in pixels */
guint32 rgba; /* RGBA color for text */
gchar *ellipsis; /* The ellipsis characters. NULL = "...". */
gdouble ellipsis_width; /* The width of the ellipsis. */
gint xofs_edit; /* Offset because of editing */
gint yofs_edit; /* Offset because of editing */
/* 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. */
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 */
gint tep_command_id;
gboolean has_selection; /* TRUE if we have the selection */
guint clip : 1; /* Use clip rectangle? */
guint fill_clip_rectangle : 1; /* Fill the clipping rectangle. */
guint pointer_in : 1; /* Is the pointer currently over us? */
guint default_cursor_shown : 1; /* Is the default cursor currently shown? */
guint draw_borders : 1; /* Draw borders? */
guint draw_background : 1; /* Draw background? */
guint draw_button : 1; /* Draw button? */
guint line_wrap : 1; /* Do line wrap */
guint needs_redraw : 1; /* Needs redraw */
guint needs_recalc_bounds : 1; /* Need recalc_bounds */
guint needs_calc_height : 1; /* Need calc_height */
guint needs_split_into_lines : 1; /* Needs split_into_lines */
guint needs_reset_layout : 1; /* Needs split_into_lines */
guint bold : 1;
guint strikeout : 1;
guint tooltip_owner : 1;
guint allow_newlines : 1;
guint use_ellipsis : 1; /* Whether to use the ellipsis. */
guint editable : 1; /* Item is editable */
guint editing : 1; /* Item is currently being edited */
gchar *break_characters; /* Characters to optionally break after */
gint max_lines; /* Max number of lines (-1 = infinite) */
GdkCursor *default_cursor; /* Default cursor (arrow) */
GdkCursor *i_cursor; /* I beam cursor */
gint tooltip_timeout; /* Timeout for the tooltip */
gint tooltip_count; /* GDK_ENTER_NOTIFY count. */
gint dbl_timeout; /* Double click timeout */
gint tpl_timeout; /* Triple click timeout */
gint last_type_request; /* Last selection type requested. */
guint32 last_time_request; /* The time of the last selection request. */
GdkAtom last_selection_request; /* The time of the last selection request. */
GList *queued_requests; /* Queued selection requests. */
GtkIMContext *im_context;
gboolean need_im_reset;
gboolean im_context_signals_registered;
gboolean handle_popup;
PangoFontDescription *font_desc;
};
struct _ETextClass {
GnomeCanvasItemClass parent_class;
void (* changed) (EText *text);
void (* activate) (EText *text);
void (* keypress) (EText *text, guint keyval, guint state);
void (* populate_popup) (EText *text, GdkEventButton *ev, gint pos, GtkMenu *menu);
void (* style_set) (EText *text, GtkStyle *previous_style);
};
/* Standard Gtk function */
GType e_text_get_type (void);
void e_text_cancel_editing (EText *text);
void e_text_stop_editing (EText *text);
void e_text_delete_selection (EText *text);
void e_text_cut_clipboard (EText *text);
void e_text_copy_clipboard (EText *text);
void e_text_paste_clipboard (EText *text);
void e_text_select_all (EText *text);
G_END_DECLS
#endif
