1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
|
/* -*- 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"
#include "e-text-model.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
* width double RW A synonym for clip_width
* height double 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 int RW Number of lines possible when doing line wrap.
*/
#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;
ETextModel *model;
gint model_changed_signal_id;
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 width; /* Rendered text width in pixels */
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 */
gint tep_command_id;
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*/
guint pointer_in : 1; /* Is the pointer currently over us? */
guint default_cursor_shown : 1; /* Is the default cursor currently shown? */
guint line_wrap : 1; /* Do line wrap */
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 */
GtkWidget *tooltip_window; /* GtkWindow for displaying the tooltip */
gint tooltip_count; /* GDK_ENTER_NOTIFY count. */
guint needs_redraw : 1; /* Needs redraw */
guint needs_recalc_bounds : 1; /* Need recalc_bounds */
guint needs_calc_height : 1; /* Need calc_height */
guint needs_calc_line_widths : 1; /* Needs calc_line_widths */
guint needs_split_into_lines : 1; /* Needs split_into_lines */
};
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
|
