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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* EText - Text item for evolution.
* Copyright (C) 2000 Helix Code, Inc.
*
* Author: Chris Lahey <clahey@umich.edu>
*
* 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> */
#ifndef E_TEXT_H
#define E_TEXT_H
#include <gnome.h>
#include "e-text-event-processor.h"
BEGIN_GNOME_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
* x double RW X coordinate of anchor point
* y double RW Y coordinate of anchor point
* font string W X logical font descriptor
* fontset string W X logical fontset descriptor
* font_gdk GdkFont* RW Pointer to a GdkFont
* anchor GtkAnchorType RW Anchor side for the text
* 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
* fill_stipple GdkBitmap* RW Stipple pattern for filling the text
* clip_width double RW Width of clip rectangle
* clip_height double RW Height of clip rectangle
* clip boolean RW Use clipping rectangle?
* x_offset double RW Horizontal offset distance from anchor position
* y_offset double RW Vertical offset distance from anchor position
* text_width double R Used to query the width of the rendered text
* text_height double R Used to query the rendered height of the text
*
* 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 = "...".
*
* These are not implemented yet:
* line_wrap boolean RW Line wrap when not editing.
* line_wrap_on_edit boolean RW Switch to line wrap when editing.
* background boolean RW Draw a background rectangle.
* background_on_edit boolean RW Draw a background when editing.
*/
#define E_TYPE_TEXT (e_text_get_type ())
#define E_TEXT(obj) (GTK_CHECK_CAST ((obj), E_TYPE_TEXT, EText))
#define E_TEXT_CLASS(klass) (GTK_CHECK_CLASS_CAST ((klass), E_TYPE_TEXT, ETextClass))
#define E_IS_TEXT(obj) (GTK_CHECK_TYPE ((obj), E_TYPE_TEXT))
#define E_IS_TEXT_CLASS(klass) (GTK_CHECK_CLASS_TYPE ((klass), E_TYPE_TEXT))
typedef struct _EText EText;
typedef struct _ETextClass ETextClass;
typedef struct _ETextSuckFont ETextSuckFont;
typedef struct _ETextSuckChar ETextSuckChar;
struct _ETextSuckChar {
int left_sb;
int right_sb;
int width;
int ascent;
int descent;
int bitmap_offset; /* in pixels */
};
struct _ETextSuckFont {
guchar *bitmap;
gint bitmap_width;
gint bitmap_height;
gint ascent;
ETextSuckChar chars[256];
};
struct _EText {
GnomeCanvasItem item;
char *text; /* Text to display */
gpointer lines; /* Text split into lines (private field) */
int num_lines; /* Number of lines of text */
double x, y; /* Position at anchor */
GdkFont *font; /* Font for text */
GtkAnchorType anchor; /* Anchor side for text */
GtkJustification justification; /* Justification for text */
double clip_width; /* Width of optional clip rectangle */
double clip_height; /* Height of optional clip rectangle */
double xofs, yofs; /* Text offset distance from anchor position */
gulong pixel; /* Fill color */
GdkBitmap *stipple; /* Stipple for text */
GdkGC *gc; /* GC for drawing text */
int cx, cy; /* Top-left canvas coordinates for text */
int clip_cx, clip_cy; /* Top-left canvas coordinates for clip rectangle */
int clip_cwidth, clip_cheight; /* Size of clip rectangle in pixels */
int max_width; /* Maximum width of text lines */
int height; /* Rendered text height in pixels */
guint clip : 1; /* Use clip rectangle? */
/* Antialiased specific stuff follows */
ETextSuckFont *suckfont; /* Sucked font */
guint32 rgba; /* RGBA color for text */
double affine[6]; /* The item -> canvas affine */
char *ellipsis; /* The ellipsis characters. NULL = "...". */
double ellipsis_width; /* The width of the ellipsis. */
gboolean use_ellipsis; /* Whether to use the ellipsis. */
gboolean editable; /* Item is editable */
gboolean editing; /* Item is currently being edited */
int xofs_edit; /* Offset because of editing */
/* This needs to be reworked a bit once we get line wrapping. */
int selection_start; /* Start of selection */
int selection_end; /* End of selection */
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 */
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 */
gchar *clipboard_selection; /* Clipboard selection text */
gint clipboard_length; /* Clipboard selection text length*/
};
struct _ETextClass {
GnomeCanvasItemClass parent_class;
void (* resize) (EText *text);
void (* change) (EText *text);
};
/* Standard Gtk function */
GtkType e_text_get_type (void);
END_GNOME_DECLS
#endif
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