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8182b354b1
mutter/clutter/clutter-text.c
Emmanuele Bassi 8182b354b1 [text] Fix the deletion actions 
When using the delete-prev action from the end of the text we end
up either missing the first glyph we have to delete or falling
through the last one in the text.

This commit fixes both issues.
2009-01-06 20:54:20 +00:00

3591 lines
94 KiB
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/*
* Clutter.
*
* An OpenGL based 'interactive canvas' library.
*
* Copyright (C) 2008 Intel Corporation.
*
* Authored By: Øyvind Kolås <pippin@o-hand.com>
* Emmanuele Bassi <ebassi@linux.intel.com>
*
* This library 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) any later version.
*
* This library 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 this library. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* SECTION:clutter-text
* @short_description: An actor for displaying and editing text
*
* #ClutterText is an actor that displays custom text using Pango
* as the text rendering engine.
*
* #ClutterText also allows inline editing of the text if the
* actor is set editable using clutter_text_set_editable().
*
* Selection using keyboard or pointers can be enabled using
* clutter_text_set_selectable().
*
* #ClutterText is available since Clutter 1.0
*/
/* TODO: undo/redo hooks? */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include "clutter-text.h"
#include "clutter-binding-pool.h"
#include "clutter-debug.h"
#include "clutter-enum-types.h"
#include "clutter-keysyms.h"
#include "clutter-main.h"
#include "clutter-private.h" /* includes pango/cogl-pango.h */
#include "clutter-units.h"
/* cursor width in pixels */
#define DEFAULT_CURSOR_SIZE 2
/* We need at least three cached layouts to run the allocation without
* regenerating a new layout. First the layout will be generated at
* full width to get the preferred width, then it will be generated at
* the preferred width to get the preferred height and then it might
* be regenerated at a different width to get the height for the
* actual allocated width
*/
#define N_CACHED_LAYOUTS 3
#define CLUTTER_TEXT_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), CLUTTER_TYPE_TEXT, ClutterTextPrivate))
typedef struct _LayoutCache LayoutCache;
static const ClutterColor default_cursor_color = { 0, 0, 0, 255 };
static const ClutterColor default_text_color = { 0, 0, 0, 255 };
G_DEFINE_TYPE (ClutterText, clutter_text, CLUTTER_TYPE_ACTOR);
struct _LayoutCache
{
/* Cached layout. Pango internally caches the computed extents
* when they are requested so there is no need to cache that as
* well
*/
PangoLayout *layout;
/* The width that used to generate this layout */
ClutterUnit width;
/* A number representing the age of this cache (so that when a
* new layout is needed the last used cache is replaced)
*/
guint age;
};
struct _ClutterTextPrivate
{
PangoFontDescription *font_desc;
gchar *text;
gchar *font_name;
ClutterColor text_color;
LayoutCache cached_layouts[N_CACHED_LAYOUTS];
guint cache_age;
PangoAttrList *attrs;
PangoAttrList *effective_attrs;
guint alignment : 2;
guint wrap : 1;
guint use_underline : 1;
guint use_markup : 1;
guint ellipsize : 3;
guint single_line_mode : 1;
guint wrap_mode : 3;
guint justify : 1;
guint editable : 1;
guint cursor_visible : 1;
guint activatable : 1;
guint selectable : 1;
guint in_select_drag : 1;
guint cursor_color_set : 1;
/* current cursor position */
gint position;
/* current 'other end of selection' position */
gint selection_bound;
/* the x position in the pangolayout, used to
* avoid drifting when repeatedly moving up|down
*/
gint x_pos;
/* the length of the text, in bytes */
gint n_bytes;
/* the length of the text, in characters */
gint n_chars;
/* Where to draw the cursor */
ClutterGeometry cursor_pos;
ClutterColor cursor_color;
guint cursor_size;
gint max_length;
gunichar password_char;
};
enum
{
PROP_0,
PROP_FONT_NAME,
PROP_TEXT,
PROP_COLOR,
PROP_USE_MARKUP,
PROP_ATTRIBUTES,
PROP_ALIGNMENT,
PROP_LINE_WRAP,
PROP_LINE_WRAP_MODE,
PROP_JUSTIFY,
PROP_ELLIPSIZE,
PROP_POSITION,
PROP_SELECTION_BOUND,
PROP_CURSOR_VISIBLE,
PROP_CURSOR_COLOR,
PROP_CURSOR_COLOR_SET,
PROP_CURSOR_SIZE,
PROP_EDITABLE,
PROP_SELECTABLE,
PROP_ACTIVATABLE,
PROP_PASSWORD_CHAR,
PROP_MAX_LENGTH
};
enum
{
TEXT_CHANGED,
CURSOR_EVENT,
ACTIVATE,
LAST_SIGNAL
};
static guint text_signals[LAST_SIGNAL] = { 0, };
#define offset_real(t,p) \
((p) == -1 ? g_utf8_strlen ((t), -1) : (p))
static gint
offset_to_bytes (const gchar *text,
gint pos)
{
gchar *c = NULL;
gint i, j, len;
if (pos < 0)
return strlen (text);
c = g_utf8_next_char (text);
j = 1;
len = strlen (text);
for (i = 0; i < len; i++)
{
if (&text[i] == c)
{
if (j == pos)
break;
else
{
c = g_utf8_next_char (c);
j++;
}
}
}
return i;
}
#define bytes_to_offset(t,p) \
(g_utf8_pointer_to_offset ((t), (t) + (p)))
static inline void
clutter_text_clear_selection (ClutterText *self)
{
ClutterTextPrivate *priv = self->priv;
priv->selection_bound = priv->position;
}
static PangoLayout *
clutter_text_create_layout_no_cache (ClutterText *text,
ClutterUnit allocation_width)
{
ClutterTextPrivate *priv = text->priv;
PangoContext *context;
PangoLayout *layout;
context = clutter_actor_get_pango_context (CLUTTER_ACTOR (text));
layout = pango_layout_new (context);
pango_layout_set_font_description (layout, priv->font_desc);
if (priv->effective_attrs)
pango_layout_set_attributes (layout, priv->effective_attrs);
pango_layout_set_alignment (layout, priv->alignment);
pango_layout_set_single_paragraph_mode (layout, priv->single_line_mode);
pango_layout_set_justify (layout, priv->justify);
if (priv->text)
{
if (!priv->use_markup)
{
if (G_LIKELY (priv->password_char == 0))
pango_layout_set_text (layout, priv->text, priv->n_bytes);
else
{
GString *str = g_string_sized_new (priv->n_bytes);
gunichar invisible_char;
gchar buf[7];
gint char_len, i;
invisible_char = priv->password_char;
/* we need to convert the string built of invisible
* characters into UTF-8 for it to be fed to the Pango
* layout
*/
memset (buf, 0, sizeof (buf));
char_len = g_unichar_to_utf8 (invisible_char, buf);
for (i = 0; i < priv->n_chars; i++)
g_string_append_len (str, buf, char_len);
pango_layout_set_text (layout, str->str, str->len);
g_string_free (str, TRUE);
}
}
else
pango_layout_set_markup (layout, priv->text, -1);
}
if (allocation_width > 0 &&
(priv->ellipsize != PANGO_ELLIPSIZE_NONE || priv->wrap))
{
int layout_width, layout_height;
pango_layout_get_size (layout, &layout_width, &layout_height);
/* No need to set ellipsize or wrap if we already have enough
* space, since we don't want to make the layout wider than it
* would be otherwise.
*/
if (CLUTTER_UNITS_FROM_PANGO_UNIT (layout_width) > allocation_width)
{
if (priv->ellipsize != PANGO_ELLIPSIZE_NONE)
{
gint width;
width = allocation_width > 0
? CLUTTER_UNITS_TO_PANGO_UNIT (allocation_width)
: -1;
pango_layout_set_ellipsize (layout, priv->ellipsize);
pango_layout_set_width (layout, width);
}
else if (priv->wrap)
{
gint width;
width = allocation_width > 0
? CLUTTER_UNITS_TO_PANGO_UNIT (allocation_width)
: -1;
pango_layout_set_wrap (layout, priv->wrap_mode);
pango_layout_set_width (layout, width);
}
}
}
return layout;
}
static void
clutter_text_dirty_cache (ClutterText *text)
{
ClutterTextPrivate *priv = text->priv;
int i;
/* Delete the cached layouts so they will be recreated the next time
they are needed */
for (i = 0; i < N_CACHED_LAYOUTS; i++)
if (priv->cached_layouts[i].layout)
{
g_object_unref (priv->cached_layouts[i].layout);
priv->cached_layouts[i].layout = NULL;
}
}
/*
* clutter_text_create_layout:
* @text: a #ClutterText
* @allocation_width: the allocation width
*
* Like clutter_text_create_layout_no_cache(), but will also ensure
* the glyphs cache. If a previously cached layout generated using the
* same width is available then that will be used instead of
* generating a new one.
*/
static PangoLayout *
clutter_text_create_layout (ClutterText *text,
ClutterUnit allocation_width)
{
ClutterTextPrivate *priv = text->priv;
LayoutCache *oldest_cache = priv->cached_layouts;
gboolean found_free_cache = FALSE;
int i;
/* Search for a cached layout with the same width and keep track of
the oldest one */
for (i = 0; i < N_CACHED_LAYOUTS; i++)
{
if (priv->cached_layouts[i].layout == NULL)
{
/* Always prefer free cache spaces */
found_free_cache = TRUE;
oldest_cache = priv->cached_layouts + i;
}
/* If this cached layout is using the same width then we can
just return that directly */
else if (priv->cached_layouts[i].width == allocation_width)
{
CLUTTER_NOTE (ACTOR, "ClutterText: %p: cache hit for width %i",
text,
CLUTTER_UNITS_TO_DEVICE (allocation_width));
return priv->cached_layouts[i].layout;
}
else if (!found_free_cache &&
(priv->cached_layouts[i].age < oldest_cache->age))
{
oldest_cache = priv->cached_layouts + i;
}
}
CLUTTER_NOTE (ACTOR, "ClutterText: %p: cache miss for width %i",
text,
CLUTTER_UNITS_TO_DEVICE (allocation_width));
/* If we make it here then we didn't have a cached version so we
need to recreate the layout */
if (oldest_cache->layout)
g_object_unref (oldest_cache->layout);
oldest_cache->layout =
clutter_text_create_layout_no_cache (text, allocation_width);
cogl_pango_ensure_glyph_cache_for_layout (oldest_cache->layout);
/* Mark the 'time' this cache was created and advance the time */
oldest_cache->age = priv->cache_age++;
oldest_cache->width = allocation_width;
return oldest_cache->layout;
}
static gint
clutter_text_coords_to_position (ClutterText *text,
gint x,
gint y)
{
gint index_;
gint px, py;
gint trailing;
px = x * PANGO_SCALE;
py = y * PANGO_SCALE;
pango_layout_xy_to_index (clutter_text_get_layout (text),
px, py,
&index_, &trailing);
return index_ + trailing;
}
/*
* clutter_text_position_to_coords:
* @self: a #ClutterText
* @position: position in characters
* @x: return location for the X coordinate, or %NULL
* @y: return location for the Y coordinate, or %NULL
* @line_height: return location for the line height, or %NULL
*
* Retrieves the coordinates of the given @position.
*
* Return value: %TRUE if the conversion was successful
*/
static gboolean
clutter_text_position_to_coords (ClutterText *self,
gint position,
ClutterUnit *x,
ClutterUnit *y,
ClutterUnit *line_height)
{
ClutterTextPrivate *priv = self->priv;
PangoRectangle rect;
gint password_char_bytes = 1;
gint index_;
if (priv->password_char != 0)
password_char_bytes = g_unichar_to_utf8 (priv->password_char, NULL);
if (position == -1)
{
if (priv->password_char == 0)
index_ = priv->n_bytes;
else
index_ = priv->n_chars * password_char_bytes;
}
else if (position == 0)
{
index_ = 0;
}
else
{
if (priv->password_char == 0)
index_ = offset_to_bytes (priv->text, position);
else
index_ = priv->position * password_char_bytes;
}
pango_layout_get_cursor_pos (clutter_text_get_layout (self), index_,
&rect, NULL);
if (x)
*x = CLUTTER_UNITS_FROM_PANGO_UNIT (rect.x);
if (y)
*y = CLUTTER_UNITS_FROM_PANGO_UNIT (rect.y);
if (line_height)
*line_height = CLUTTER_UNITS_FROM_PANGO_UNIT (rect.height);
/* FIXME: should return false if coords were outside text */
return TRUE;
}
static inline void
clutter_text_ensure_cursor_position (ClutterText *self)
{
ClutterTextPrivate *priv = self->priv;
ClutterUnit x, y, cursor_height;
x = y = cursor_height = 0;
clutter_text_position_to_coords (self, priv->position,
&x, &y,
&cursor_height);
priv->cursor_pos.x = CLUTTER_UNITS_TO_DEVICE (x);
priv->cursor_pos.y = CLUTTER_UNITS_TO_DEVICE (y);
priv->cursor_pos.width = priv->cursor_size;
priv->cursor_pos.height = CLUTTER_UNITS_TO_DEVICE (cursor_height);
g_signal_emit (self, text_signals[CURSOR_EVENT], 0, &priv->cursor_pos);
}
static gboolean
clutter_text_truncate_selection (ClutterText *self)
{
ClutterTextPrivate *priv = self->priv;
gint start_index;
gint end_index;
if (!priv->text)
return TRUE;
start_index = offset_real (priv->text, priv->position);
end_index = offset_real (priv->text, priv->selection_bound);
if (end_index == start_index)
return FALSE;
if (end_index < start_index)
{
gint temp = start_index;
start_index = end_index;
end_index = temp;
}
clutter_text_delete_text (self, start_index, end_index);
priv->position = start_index;
priv->selection_bound = start_index;
return TRUE;
}
static void
clutter_text_set_property (GObject *gobject,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
ClutterText *self = CLUTTER_TEXT (gobject);
switch (prop_id)
{
case PROP_TEXT:
clutter_text_set_text (self, g_value_get_string (value));
break;
case PROP_COLOR:
clutter_text_set_color (self, clutter_value_get_color (value));
break;
case PROP_FONT_NAME:
clutter_text_set_font_name (self, g_value_get_string (value));
break;
case PROP_USE_MARKUP:
clutter_text_set_use_markup (self, g_value_get_boolean (value));
break;
case PROP_ATTRIBUTES:
clutter_text_set_attributes (self, g_value_get_boxed (value));
break;
case PROP_ALIGNMENT:
clutter_text_set_alignment (self, g_value_get_enum (value));
break;
case PROP_LINE_WRAP:
clutter_text_set_line_wrap (self, g_value_get_boolean (value));
break;
case PROP_LINE_WRAP_MODE:
clutter_text_set_line_wrap_mode (self, g_value_get_enum (value));
break;
case PROP_JUSTIFY:
clutter_text_set_justify (self, g_value_get_boolean (value));
break;
case PROP_ELLIPSIZE:
clutter_text_set_ellipsize (self, g_value_get_enum (value));
break;
case PROP_POSITION:
clutter_text_set_cursor_position (self, g_value_get_int (value));
break;
case PROP_SELECTION_BOUND:
clutter_text_set_selection_bound (self, g_value_get_int (value));
break;
case PROP_CURSOR_VISIBLE:
clutter_text_set_cursor_visible (self, g_value_get_boolean (value));
break;
case PROP_CURSOR_COLOR:
clutter_text_set_cursor_color (self, g_value_get_boxed (value));
break;
case PROP_CURSOR_SIZE:
clutter_text_set_cursor_size (self, g_value_get_int (value));
break;
case PROP_EDITABLE:
clutter_text_set_editable (self, g_value_get_boolean (value));
break;
case PROP_ACTIVATABLE:
clutter_text_set_activatable (self, g_value_get_boolean (value));
break;
case PROP_SELECTABLE:
clutter_text_set_selectable (self, g_value_get_boolean (value));
break;
case PROP_PASSWORD_CHAR:
clutter_text_set_password_char (self, g_value_get_uint (value));
break;
case PROP_MAX_LENGTH:
clutter_text_set_max_length (self, g_value_get_int (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
}
}
static void
clutter_text_get_property (GObject *gobject,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
ClutterTextPrivate *priv = CLUTTER_TEXT (gobject)->priv;
switch (prop_id)
{
case PROP_TEXT:
g_value_set_string (value, priv->text);
break;
case PROP_FONT_NAME:
g_value_set_string (value, priv->font_name);
break;
case PROP_COLOR:
clutter_value_set_color (value, &priv->text_color);
break;
case PROP_CURSOR_VISIBLE:
g_value_set_boolean (value, priv->cursor_visible);
break;
case PROP_CURSOR_COLOR:
clutter_value_set_color (value, &priv->cursor_color);
break;
case PROP_CURSOR_COLOR_SET:
g_value_set_boolean (value, priv->cursor_color_set);
break;
case PROP_CURSOR_SIZE:
g_value_set_int (value, priv->cursor_size);
break;
case PROP_POSITION:
g_value_set_int (value, CLUTTER_FIXED_TO_FLOAT (priv->position));
break;
case PROP_SELECTION_BOUND:
g_value_set_int (value, CLUTTER_FIXED_TO_FLOAT (priv->selection_bound));
break;
case PROP_EDITABLE:
g_value_set_boolean (value, priv->editable);
break;
case PROP_SELECTABLE:
g_value_set_boolean (value, priv->selectable);
break;
case PROP_ACTIVATABLE:
g_value_set_boolean (value, priv->activatable);
break;
case PROP_PASSWORD_CHAR:
g_value_set_uint (value, priv->password_char);
break;
case PROP_MAX_LENGTH:
g_value_set_int (value, priv->max_length);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
}
}
static void
clutter_text_dispose (GObject *gobject)
{
ClutterText *self = CLUTTER_TEXT (gobject);
/* get rid of the entire cache */
clutter_text_dirty_cache (self);
G_OBJECT_CLASS (clutter_text_parent_class)->dispose (gobject);
}
static void
clutter_text_finalize (GObject *gobject)
{
ClutterText *self = CLUTTER_TEXT (gobject);
ClutterTextPrivate *priv = self->priv;
if (priv->font_desc)
pango_font_description_free (priv->font_desc);
g_free (priv->text);
g_free (priv->font_name);
G_OBJECT_CLASS (clutter_text_parent_class)->finalize (gobject);
}
static void
cursor_paint (ClutterText *self)
{
ClutterTextPrivate *priv = self->priv;
ClutterActor *actor = CLUTTER_ACTOR (self);
guint8 real_opacity;
if (priv->editable && priv->cursor_visible)
{
if (priv->cursor_color_set)
{
real_opacity = clutter_actor_get_paint_opacity (actor)
* priv->cursor_color.alpha
/ 255;
cogl_set_source_color4ub (priv->cursor_color.red,
priv->cursor_color.green,
priv->cursor_color.blue,
real_opacity);
}
else
{
real_opacity = clutter_actor_get_paint_opacity (actor)
* priv->text_color.alpha
/ 255;
cogl_set_source_color4ub (priv->text_color.red,
priv->text_color.green,
priv->text_color.blue,
real_opacity);
}
clutter_text_ensure_cursor_position (self);
if (priv->position == 0)
priv->cursor_pos.x -= 2;
if (priv->position == priv->selection_bound)
{
cogl_rectangle (priv->cursor_pos.x,
priv->cursor_pos.y,
priv->cursor_pos.width,
priv->cursor_pos.height);
}
else
{
PangoLayout *layout = clutter_text_get_layout (self);
const gchar *utf8 = priv->text;
gint lines;
gint start_index;
gint end_index;
gint line_no;
if (priv->position == 0)
start_index = 0;
else
start_index = offset_to_bytes (utf8, priv->position);
if (priv->selection_bound == 0)
end_index = 0;
else
end_index = offset_to_bytes (utf8, priv->selection_bound);
if (start_index > end_index)
{
gint temp = start_index;
start_index = end_index;
end_index = temp;
}
lines = pango_layout_get_line_count (layout);
for (line_no = 0; line_no < lines; line_no++)
{
PangoLayoutLine *line;
gint n_ranges;
gint *ranges;
gint i;
gint index;
gint maxindex;
ClutterUnit y, height;
line = pango_layout_get_line_readonly (layout, line_no);
pango_layout_line_x_to_index (line, G_MAXINT, &maxindex, NULL);
if (maxindex < start_index)
continue;
pango_layout_line_get_x_ranges (line, start_index, end_index,
&ranges,
&n_ranges);
pango_layout_line_x_to_index (line, 0, &index, NULL);
clutter_text_position_to_coords (self,
bytes_to_offset (utf8, index),
NULL, &y, &height);
for (i = 0; i < n_ranges; i++)
{
gint range_x;
gint range_width;
range_x = ranges[i * 2]
/ PANGO_SCALE;
range_width = (ranges[i * 2 + 1] - ranges[i * 2])
/ PANGO_SCALE;
cogl_rectangle (range_x,
CLUTTER_UNITS_TO_DEVICE (y),
range_width,
CLUTTER_UNITS_TO_DEVICE (height));
}
g_free (ranges);
}
}
}
}
static gboolean
clutter_text_button_press (ClutterActor *actor,
ClutterButtonEvent *event)
{
ClutterText *self = CLUTTER_TEXT (actor);
ClutterTextPrivate *priv = self->priv;
ClutterUnit x, y;
gint index_;
x = CLUTTER_UNITS_FROM_INT (event->x);
y = CLUTTER_UNITS_FROM_INT (event->y);
clutter_actor_transform_stage_point (actor, x, y, &x, &y);
index_ = clutter_text_coords_to_position (self,
CLUTTER_UNITS_TO_INT (x),
CLUTTER_UNITS_TO_INT (y));
clutter_text_set_cursor_position (self, bytes_to_offset (priv->text, index_));
clutter_text_set_selection_bound (self, bytes_to_offset (priv->text, index_));
/* grab the pointer */
priv->in_select_drag = TRUE;
clutter_grab_pointer (actor);
/* we'll steal keyfocus if we do not have it */
clutter_actor_grab_key_focus (actor);
return TRUE;
}
static gboolean
clutter_text_motion (ClutterActor *actor,
ClutterMotionEvent *mev)
{
ClutterText *ttext = CLUTTER_TEXT (actor);
ClutterTextPrivate *priv = ttext->priv;
ClutterUnit x, y;
gint index_;
const gchar *text;
if (!priv->in_select_drag)
return FALSE;
text = clutter_text_get_text (ttext);
x = CLUTTER_UNITS_FROM_INT (mev->x);
y = CLUTTER_UNITS_FROM_INT (mev->y);
clutter_actor_transform_stage_point (actor, x, y, &x, &y);
index_ = clutter_text_coords_to_position (ttext,
CLUTTER_UNITS_TO_INT (x),
CLUTTER_UNITS_TO_INT (y));
if (priv->selectable)
clutter_text_set_cursor_position (ttext, bytes_to_offset (text, index_));
else
{
clutter_text_set_cursor_position (ttext, bytes_to_offset (text, index_));
clutter_text_set_selection_bound (ttext, bytes_to_offset (text, index_));
}
return TRUE;
}
static gboolean
clutter_text_button_release (ClutterActor *actor,
ClutterButtonEvent *bev)
{
ClutterText *ttext = CLUTTER_TEXT (actor);
ClutterTextPrivate *priv = ttext->priv;
if (priv->in_select_drag)
{
clutter_ungrab_pointer ();
priv->in_select_drag = FALSE;
return TRUE;
}
return FALSE;
}
static gboolean
clutter_text_key_press (ClutterActor *actor,
ClutterKeyEvent *event)
{
ClutterText *self = CLUTTER_TEXT (actor);
ClutterTextPrivate *priv = self->priv;
ClutterBindingPool *pool;
gboolean res;
gint keyval;
if (!priv->editable)
return FALSE;
keyval = clutter_key_event_symbol (event);
pool = clutter_binding_pool_find (G_OBJECT_TYPE_NAME (actor));
g_assert (pool != NULL);
/* we allow passing synthetic events that only contain
* the Unicode value and not the key symbol
*/
if (keyval == 0 && (event->flags & CLUTTER_EVENT_FLAG_SYNTHETIC))
res = FALSE;
else
res = clutter_binding_pool_activate (pool, keyval,
event->modifier_state,
G_OBJECT (actor));
/* if the key binding has handled the event we bail out
* as fast as we can; otherwise, we try to insert the
* Unicode character inside the key event into the text
* actor
*/
if (res)
return TRUE;
else
{
gunichar key_unichar = clutter_key_event_unicode (event);
/* return is reported as CR, but we want LF */
if (key_unichar == '\r')
key_unichar = '\n';
if (g_unichar_validate (key_unichar))
{
/* truncate the eventual selection so that the
* Unicode character can replace it
*/
clutter_text_truncate_selection (self);
clutter_text_insert_unichar (self, key_unichar);
return TRUE;
}
}
return FALSE;
}
static void
clutter_text_paint (ClutterActor *self)
{
ClutterText *text = CLUTTER_TEXT (self);
ClutterTextPrivate *priv = text->priv;
PangoLayout *layout;
ClutterActorBox alloc = { 0, };
CoglColor color = { 0, };
guint8 real_opacity;
if (priv->font_desc == NULL || priv->text == NULL)
{
CLUTTER_NOTE (ACTOR, "desc: %p, text %p",
priv->font_desc ? priv->font_desc : 0x0,
priv->text ? priv->text : 0x0);
return;
}
cursor_paint (text);
CLUTTER_NOTE (PAINT, "painting text (text:`%s')", priv->text);
clutter_actor_get_allocation_box (self, &alloc);
layout = clutter_text_create_layout (text, alloc.x2 - alloc.x1);
real_opacity = clutter_actor_get_paint_opacity (self)
* priv->text_color.alpha
/ 255;
cogl_color_set_from_4ub (&color,
priv->text_color.red,
priv->text_color.green,
priv->text_color.blue,
real_opacity);
cogl_pango_render_layout (layout, 0, 0, &color, 0);
}
static void
clutter_text_get_preferred_width (ClutterActor *self,
ClutterUnit for_height,
ClutterUnit *min_width_p,
ClutterUnit *natural_width_p)
{
ClutterText *text = CLUTTER_TEXT (self);
ClutterTextPrivate *priv = text->priv;
PangoRectangle logical_rect = { 0, };
PangoLayout *layout;
gint logical_width;
ClutterUnit layout_width;
layout = clutter_text_create_layout (text, -1);
pango_layout_get_extents (layout, NULL, &logical_rect);
/* the X coordinate of the logical rectangle might be non-zero
* according to the Pango documentation; hence, we need to offset
* the width accordingly
*/
logical_width = logical_rect.x + logical_rect.width;
layout_width = logical_width > 0
? CLUTTER_UNITS_FROM_PANGO_UNIT (logical_width)
: 1;
if (min_width_p)
{
if (priv->wrap || priv->ellipsize)
*min_width_p = 1;
else
*min_width_p = layout_width;
}
if (natural_width_p)
*natural_width_p = layout_width;
}
static void
clutter_text_get_preferred_height (ClutterActor *self,
ClutterUnit for_width,
ClutterUnit *min_height_p,
ClutterUnit *natural_height_p)
{
ClutterText *text = CLUTTER_TEXT (self);
if (for_width == 0)
{
if (min_height_p)
*min_height_p = 0;
if (natural_height_p)
*natural_height_p = 0;
}
else
{
PangoLayout *layout;
PangoRectangle logical_rect = { 0, };
gint logical_height;
ClutterUnit layout_height;
layout = clutter_text_create_layout (text, for_width);
pango_layout_get_extents (layout, NULL, &logical_rect);
/* the Y coordinate of the logical rectangle might be non-zero
* according to the Pango documentation; hence, we need to offset
* the height accordingly
*/
logical_height = logical_rect.y + logical_rect.height;
layout_height = CLUTTER_UNITS_FROM_PANGO_UNIT (logical_height);
if (min_height_p)
*min_height_p = layout_height;
if (natural_height_p)
*natural_height_p = layout_height;
}
}
static void
clutter_text_allocate (ClutterActor *self,
const ClutterActorBox *box,
gboolean origin_changed)
{
ClutterText *text = CLUTTER_TEXT (self);
ClutterActorClass *parent_class;
/* Ensure that there is a cached layout with the right width so
* that we don't need to create the text during the paint run
*/
clutter_text_create_layout (text, box->x2 - box->x1);
parent_class = CLUTTER_ACTOR_CLASS (clutter_text_parent_class);
parent_class->allocate (self, box, origin_changed);
}
static gboolean
clutter_text_real_move_left (ClutterText *self,
const gchar *action,
guint keyval,
ClutterModifierType modifiers)
{
ClutterTextPrivate *priv = self->priv;
gint pos = priv->position;
gint len;
len = priv->n_chars;
if (pos != 0 && len !=0)
{
if (pos == -1)
clutter_text_set_cursor_position (self, len - 1);
else
clutter_text_set_cursor_position (self, pos - 1);
}
if (!(priv->selectable && (modifiers & CLUTTER_SHIFT_MASK)))
clutter_text_clear_selection (self);
return TRUE;
}
static gboolean
clutter_text_real_move_right (ClutterText *self,
const gchar *action,
guint keyval,
ClutterModifierType modifiers)
{
ClutterTextPrivate *priv = self->priv;
gint pos = priv->position;
gint len;
len = priv->n_chars;
if (pos != -1 && len !=0)
{
if (pos != len)
clutter_text_set_cursor_position (self, pos + 1);
}
if (!(priv->selectable && (modifiers & CLUTTER_SHIFT_MASK)))
clutter_text_clear_selection (self);
return TRUE;
}
static gboolean
clutter_text_real_move_up (ClutterText *self,
const gchar *action,
guint keyval,
ClutterModifierType modifiers)
{
ClutterTextPrivate *priv = self->priv;
PangoLayoutLine *layout_line;
PangoLayout *layout;
gint line_no;
gint index_;
gint x;
layout = clutter_text_get_layout (self);
if (priv->position == 0)
index_ = 0;
else
index_ = offset_to_bytes (priv->text, priv->position);
pango_layout_index_to_line_x (layout, index_,
0,
&line_no, &x);
line_no -= 1;
if (line_no < 0)
return FALSE;
if (priv->x_pos != -1)
x = priv->x_pos;
else
priv->x_pos = x;
layout_line = pango_layout_get_line_readonly (layout, line_no);
if (!layout_line)
return FALSE;
pango_layout_line_x_to_index (layout_line, x, &index_, NULL);
{
gint pos = bytes_to_offset (priv->text, index_);
clutter_text_set_cursor_position (self, pos);
}
if (!(priv->selectable && (modifiers & CLUTTER_SHIFT_MASK)))
clutter_text_clear_selection (self);
return TRUE;
}
static gboolean
clutter_text_real_move_down (ClutterText *self,
const gchar *action,
guint keyval,
ClutterModifierType modifiers)
{
ClutterTextPrivate *priv = self->priv;
PangoLayoutLine *layout_line;
PangoLayout *layout;
gint line_no;
gint index_;
gint x;
layout = clutter_text_get_layout (self);
if (priv->position == 0)
index_ = 0;
else
index_ = offset_to_bytes (priv->text, priv->position);
pango_layout_index_to_line_x (layout, index_,
0,
&line_no, &x);
if (priv->x_pos != -1)
x = priv->x_pos;
else
priv->x_pos = x;
layout_line = pango_layout_get_line_readonly (layout, line_no + 1);
if (!layout_line)
return FALSE;
pango_layout_line_x_to_index (layout_line, x, &index_, NULL);
{
gint pos = bytes_to_offset (priv->text, index_);
clutter_text_set_cursor_position (self, pos);
}
if (!(priv->selectable && (modifiers & CLUTTER_SHIFT_MASK)))
clutter_text_clear_selection (self);
return TRUE;
}
static gboolean
clutter_text_real_line_start (ClutterText *self,
const gchar *action,
guint keyval,
ClutterModifierType modifiers)
{
ClutterTextPrivate *priv = self->priv;
PangoLayoutLine *layout_line;
PangoLayout *layout;
gint line_no;
gint index_;
gint position;
layout = clutter_text_get_layout (self);
if (priv->position == 0)
index_ = 0;
else
index_ = offset_to_bytes (priv->text, priv->position);
pango_layout_index_to_line_x (layout, index_,
0,
&line_no, NULL);
layout_line = pango_layout_get_line_readonly (layout, line_no);
if (!layout_line)
return FALSE;
pango_layout_line_x_to_index (layout_line, 0, &index_, NULL);
position = bytes_to_offset (priv->text, index_);
clutter_text_set_cursor_position (self, position);
if (!(priv->selectable && (modifiers & CLUTTER_SHIFT_MASK)))
clutter_text_clear_selection (self);
return TRUE;
}
static gboolean
clutter_text_real_line_end (ClutterText *self,
const gchar *action,
guint keyval,
ClutterModifierType modifiers)
{
ClutterTextPrivate *priv = self->priv;
PangoLayoutLine *layout_line;
PangoLayout *layout;
gint line_no;
gint index_;
gint trailing;
gint position;
layout = clutter_text_get_layout (self);
if (priv->position == 0)
index_ = 0;
else
index_ = offset_to_bytes (priv->text, priv->position);
pango_layout_index_to_line_x (layout, index_,
0,
&line_no, NULL);
layout_line = pango_layout_get_line_readonly (layout, line_no);
if (!layout_line)
return FALSE;
pango_layout_line_x_to_index (layout_line, G_MAXINT, &index_, &trailing);
index_ += trailing;
position = bytes_to_offset (priv->text, index_);
clutter_text_set_cursor_position (self, position);
if (!(priv->selectable && (modifiers & CLUTTER_SHIFT_MASK)))
clutter_text_clear_selection (self);
return TRUE;
}
static gboolean
clutter_text_real_select_all (ClutterText *self,
const gchar *action,
guint keyval,
ClutterModifierType modifiers)
{
clutter_text_set_cursor_position (self, 0);
clutter_text_set_selection_bound (self, self->priv->n_chars);
return TRUE;
}
static gboolean
clutter_text_real_del_next (ClutterText *self,
const gchar *action,
guint keyval,
ClutterModifierType modifiers)
{
ClutterTextPrivate *priv = self->priv;
gint pos;
gint len;
if (clutter_text_truncate_selection (self))
return TRUE;
pos = priv->position;
len = priv->n_chars;
if (len && pos != -1 && pos < len)
clutter_text_delete_text (self, pos, pos + 1);
return TRUE;
}
static gboolean
clutter_text_real_del_prev (ClutterText *self,
const gchar *action,
guint keyval,
ClutterModifierType modifiers)
{
ClutterTextPrivate *priv = self->priv;
gint pos;
gint len;
if (clutter_text_truncate_selection (self))
return TRUE;
pos = priv->position;
len = priv->n_chars;
if (pos != 0 && len != 0)
{
if (pos == -1)
{
clutter_text_set_cursor_position (self, len - 1);
clutter_text_set_selection_bound (self, len - 1);
clutter_text_delete_text (self, len - 1, len);
}
else
{
clutter_text_set_cursor_position (self, pos - 1);
clutter_text_set_selection_bound (self, pos - 1);
clutter_text_delete_text (self, pos - 1, pos);
}
}
return TRUE;
}
static gboolean
clutter_text_real_activate (ClutterText *self,
const gchar *action,
guint keyval,
ClutterModifierType modifiers)
{
return clutter_text_activate (self);
}
static inline void
clutter_text_add_move_binding (ClutterBindingPool *pool,
const gchar *action,
guint key_val,
GCallback callback)
{
clutter_binding_pool_install_action (pool, action,
key_val, 0,
callback,
NULL, NULL);
clutter_binding_pool_install_action (pool, action,
key_val, CLUTTER_SHIFT_MASK,
callback,
NULL, NULL);
}
static void
clutter_text_class_init (ClutterTextClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass);
ClutterBindingPool *binding_pool;
GParamSpec *pspec;
g_type_class_add_private (klass, sizeof (ClutterTextPrivate));
gobject_class->set_property = clutter_text_set_property;
gobject_class->get_property = clutter_text_get_property;
gobject_class->dispose = clutter_text_dispose;
gobject_class->finalize = clutter_text_finalize;
actor_class->paint = clutter_text_paint;
actor_class->get_preferred_width = clutter_text_get_preferred_width;
actor_class->get_preferred_height = clutter_text_get_preferred_height;
actor_class->allocate = clutter_text_allocate;
actor_class->key_press_event = clutter_text_key_press;
actor_class->button_press_event = clutter_text_button_press;
actor_class->button_release_event = clutter_text_button_release;
actor_class->motion_event = clutter_text_motion;
/**
* ClutterText:font-name:
*
* The font to be used by the #ClutterText, as a string
* that can be parsed by pango_font_description_from_string().
*
* Since: 1.0
*/
pspec = g_param_spec_string ("font-name",
"Font Name",
"The font to be used by the text",
NULL,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_FONT_NAME, pspec);
/**
* ClutterText:text:
*
* The text to render inside the actor.
*
* Since: 1.0
*/
pspec = g_param_spec_string ("text",
"Text",
"The text to render",
"",
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_TEXT, pspec);
/**
* ClutterText:color:
*
* The color used to render the text.
*
* Since: 1.0
*/
pspec = clutter_param_spec_color ("color",
"Font Color",
"Color of the font used by the text",
&default_text_color,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_COLOR, pspec);
/**
* ClutterText:editable:
*
* Whether key events delivered to the actor causes editing.
*
* Since: 1.0
*/
pspec = g_param_spec_boolean ("editable",
"Editable",
"Whether the text is editable",
TRUE,
G_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_EDITABLE, pspec);
/**
* ClutterText:selectable:
*
* Whether it is possible to select text, either using the pointer
* or the keyboard.
*
* Since: 1.0
*/
pspec = g_param_spec_boolean ("selectable",
"Selectable",
"Whether the text is selectable",
TRUE,
G_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_SELECTABLE, pspec);
/**
* ClutterText:activatable:
*
* Toggles whether return invokes the activate signal or not.
*
* Since: 1.0
*/
pspec = g_param_spec_boolean ("activatable",
"Activatable",
"Whether pressing return causes the "
"activate signal to be emitted",
TRUE,
G_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_ACTIVATABLE, pspec);
/**
* ClutterText:cursor-visible:
*
* Whether the input cursor is visible or not, it will only be visible
* if both #ClutterText:cursor-visible and #ClutterText:editable are
* set to %TRUE.
*
* Since: 1.0
*/
pspec = g_param_spec_boolean ("cursor-visible",
"Cursor Visible",
"Whether the input cursor is visible",
TRUE,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_CURSOR_VISIBLE, pspec);
/**
* ClutterText:cursor-color:
*
* The color of the cursor.
*
* Since: 1.0
*/
pspec = clutter_param_spec_color ("cursor-color",
"Cursor Color",
"Cursor Color",
&default_cursor_color,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_CURSOR_COLOR, pspec);
/**
* ClutterText:cursor-color-set:
*
* Will be set to %TRUE if #ClutterText:cursor-color has been set.
*
* Since: 1.0
*/
pspec = g_param_spec_boolean ("cursor-color-set",
"Cursor Color Set",
"Whether the cursor color has been set",
FALSE,
CLUTTER_PARAM_READABLE);
g_object_class_install_property (gobject_class, PROP_CURSOR_COLOR_SET, pspec);
/**
* ClutterText:cursor-size:
*
* The size of the cursor, in pixels. If set to -1 the size used will
* be the default cursor size of 2 pixels.
*
* Since: 1.0
*/
pspec = g_param_spec_int ("cursor-size",
"Cursor Size",
"The width of the cursor, in pixels",
-1, G_MAXINT, DEFAULT_CURSOR_SIZE,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_CURSOR_SIZE, pspec);
/**
* ClutterText:position:
*
* The current input cursor position. -1 is taken to be the end of the text
*
* Since: 1.0
*/
pspec = g_param_spec_int ("position",
"Position",
"The cursor position",
-1, G_MAXINT,
-1,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_POSITION, pspec);
/**
* ClutterText:selection-bound:
*
* The current input cursor position. -1 is taken to be the end of the text
*
* Since: 1.0
*/
pspec = g_param_spec_int ("selection-bound",
"Selection-bound",
"The cursor position of the other end "
"of the selection",
-1, G_MAXINT,
-1,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_SELECTION_BOUND, pspec);
/**
* ClutterText:attributes:
*
* A list of #PangoStyleAttribute<!-- -->s to be applied to the
* contents of the #ClutterText actor.
*
* Since: 1.0
*/
pspec = g_param_spec_boxed ("attributes",
"Attributes",
"A list of style attributes to apply to "
"the contents of the actor",
PANGO_TYPE_ATTR_LIST,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_ATTRIBUTES, pspec);
/**
* ClutterText:use-markup:
*
* Whether the text includes Pango markup. See pango_layout_set_markup()
* in the Pango documentation.
*
* Since: 1.0
*/
pspec = g_param_spec_boolean ("use-markup",
"Use markup",
"Whether or not the text "
"includes Pango markup",
FALSE,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_USE_MARKUP, pspec);
/**
* ClutterText:line-wrap:
*
* Whether to wrap the lines of #ClutterText:text if the contents
* exceed the available allocation. The wrapping strategy is
* controlled by the #ClutterText:line-wrap-mode property.
*
* Since: 1.0
*/
pspec = g_param_spec_boolean ("line-wrap",
"Line wrap",
"If set, wrap the lines if the text "
"becomes too wide",
FALSE,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_LINE_WRAP, pspec);
/**
* ClutterText:line-wrap-mode:
*
* If #ClutterText:line-wrap is set to %TRUE, this property will
* control how the text is wrapped.
*
* Since: 1.0
*/
pspec = g_param_spec_enum ("line-wrap-mode",
"Line wrap mode",
"Control how line-wrapping is done",
PANGO_TYPE_WRAP_MODE,
PANGO_WRAP_WORD,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_LINE_WRAP_MODE, pspec);
/**
* ClutterText:ellipsize:
*
* The preferred place to ellipsize the contents of the #ClutterText actor
*
* Since: 1.0
*/
pspec = g_param_spec_enum ("ellipsize",
"Ellipsize",
"The preferred place to ellipsize the string",
PANGO_TYPE_ELLIPSIZE_MODE,
PANGO_ELLIPSIZE_NONE,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_ELLIPSIZE, pspec);
/**
* ClutterText:alignment:
*
* The preferred alignment for the text. This property controls
* the alignment of multi-line paragraphs.
*
* Since: 1.0
*/
pspec = g_param_spec_enum ("alignment",
"Alignment",
"The preferred alignment for the string, "
"for multi-line text",
PANGO_TYPE_ALIGNMENT,
PANGO_ALIGN_LEFT,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_ALIGNMENT, pspec);
/**
* ClutterText:justify:
*
* Whether the contents of the #ClutterText should be justified
* on both margins.
*
* Since: 1.0
*/
pspec = g_param_spec_boolean ("justify",
"Justify",
"Whether the text should be justified",
FALSE,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_JUSTIFY, pspec);
/**
* ClutterText:password-char:
*
* If non-zero, the character that should be used in place of
* the actual text in a password text actor.
*
* Since: 1.0
*/
pspec = g_param_spec_unichar ("password-char",
"Password Character",
"If non-zero, use this character to "
"display the actor's contents",
0,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_PASSWORD_CHAR, pspec);
/**
* ClutterText:max-length:
*
* The maximum length of the contents of the #ClutterText actor.
*
* Since: 1.0
*/
pspec = g_param_spec_int ("max-length",
"Max Length",
"Maximum length of the text inside the actor",
-1, G_MAXINT, 0,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_MAX_LENGTH, pspec);
/**
* ClutterText::text-changed:
* @self: the #ClutterText that emitted the signal
*
* The ::text-changed signal is emitted after @actor's text changes
*
* Since: 1.0
*/
text_signals[TEXT_CHANGED] =
g_signal_new ("text-changed",
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (ClutterTextClass, text_changed),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* ClutterText::cursor-event:
* @self: the #ClutterText that emitted the signal
* @geometry: the coordinates of the cursor
*
* The ::cursor-event signal is emitted whenever the cursor position
* changes inside a #ClutterText actor. Inside @geometry it is stored
* the current position and size of the cursor, relative to the actor
* itself.
*
* Since: 1.0
*/
text_signals[CURSOR_EVENT] =
g_signal_new ("cursor-event",
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (ClutterTextClass, cursor_event),
NULL, NULL,
g_cclosure_marshal_VOID__BOXED,
G_TYPE_NONE, 1,
CLUTTER_TYPE_GEOMETRY | G_SIGNAL_TYPE_STATIC_SCOPE);
/**
* ClutterText::activate
* @self: the #ClutterText that emitted the signal
*
* The ::activate signal is emitted each time the actor is 'activated'
* by the user, normally by pressing the 'Enter' key. The signal is
* emitted only if #ClutterText:activatable is set to %TRUE.
*
* Since: 1.0
*/
text_signals[ACTIVATE] =
g_signal_new ("activate",
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (ClutterTextClass, activate),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
binding_pool = clutter_binding_pool_get_for_class (klass);
clutter_text_add_move_binding (binding_pool, "move-left",
CLUTTER_Left,
G_CALLBACK (clutter_text_real_move_left));
clutter_text_add_move_binding (binding_pool, "move-left",
CLUTTER_KP_Left,
G_CALLBACK (clutter_text_real_move_left));
clutter_text_add_move_binding (binding_pool, "move-right",
CLUTTER_Right,
G_CALLBACK (clutter_text_real_move_right));
clutter_text_add_move_binding (binding_pool, "move-right",
CLUTTER_KP_Right,
G_CALLBACK (clutter_text_real_move_right));
clutter_text_add_move_binding (binding_pool, "move-up",
CLUTTER_Up,
G_CALLBACK (clutter_text_real_move_up));
clutter_text_add_move_binding (binding_pool, "move-up",
CLUTTER_KP_Up,
G_CALLBACK (clutter_text_real_move_up));
clutter_text_add_move_binding (binding_pool, "move-down",
CLUTTER_Down,
G_CALLBACK (clutter_text_real_move_down));
clutter_text_add_move_binding (binding_pool, "move-down",
CLUTTER_KP_Down,
G_CALLBACK (clutter_text_real_move_down));
clutter_text_add_move_binding (binding_pool, "line-start",
CLUTTER_Home,
G_CALLBACK (clutter_text_real_line_start));
clutter_text_add_move_binding (binding_pool, "line-start",
CLUTTER_KP_Home,
G_CALLBACK (clutter_text_real_line_start));
clutter_text_add_move_binding (binding_pool, "line-start",
CLUTTER_Begin,
G_CALLBACK (clutter_text_real_line_start));
clutter_text_add_move_binding (binding_pool, "line-end",
CLUTTER_End,
G_CALLBACK (clutter_text_real_line_end));
clutter_text_add_move_binding (binding_pool, "line-end",
CLUTTER_KP_End,
G_CALLBACK (clutter_text_real_line_end));
clutter_binding_pool_install_action (binding_pool, "select-all",
CLUTTER_a, CLUTTER_CONTROL_MASK,
G_CALLBACK (clutter_text_real_select_all),
NULL, NULL);
clutter_binding_pool_install_action (binding_pool, "delete-next",
CLUTTER_Delete, 0,
G_CALLBACK (clutter_text_real_del_next),
NULL, NULL);
clutter_binding_pool_install_action (binding_pool, "delete-next",
CLUTTER_KP_Delete, 0,
G_CALLBACK (clutter_text_real_del_next),
NULL, NULL);
clutter_binding_pool_install_action (binding_pool, "delete-prev",
CLUTTER_BackSpace, 0,
G_CALLBACK (clutter_text_real_del_prev),
NULL, NULL);
clutter_binding_pool_install_action (binding_pool, "activate",
CLUTTER_Return, 0,
G_CALLBACK (clutter_text_real_activate),
NULL, NULL);
clutter_binding_pool_install_action (binding_pool, "activate",
CLUTTER_KP_Enter, 0,
G_CALLBACK (clutter_text_real_activate),
NULL, NULL);
clutter_binding_pool_install_action (binding_pool, "activate",
CLUTTER_ISO_Enter, 0,
G_CALLBACK (clutter_text_real_activate),
NULL, NULL);
}
static void
clutter_text_init (ClutterText *self)
{
ClutterTextPrivate *priv;
const gchar *font_name;
int i;
self->priv = priv = CLUTTER_TEXT_GET_PRIVATE (self);
priv->alignment = PANGO_ALIGN_LEFT;
priv->wrap = FALSE;
priv->wrap_mode = PANGO_WRAP_WORD;
priv->ellipsize = PANGO_ELLIPSIZE_NONE;
priv->use_underline = FALSE;
priv->use_markup = FALSE;
priv->justify = FALSE;
for (i = 0; i < N_CACHED_LAYOUTS; i++)
priv->cached_layouts[i].layout = NULL;
/* default to "" so that clutter_text_get_text() will
* return a valid string and we can safely call strlen()
* or strcmp() on it
*/
priv->text = g_strdup ("");
priv->text_color = default_text_color;
priv->cursor_color = default_cursor_color;
/* get the default font name from the context */
font_name = clutter_backend_get_font_name (clutter_get_default_backend ());
priv->font_name = g_strdup (font_name);
priv->font_desc = pango_font_description_from_string (font_name);
priv->position = -1;
priv->selection_bound = -1;
priv->x_pos = -1;
priv->cursor_visible = TRUE;
priv->editable = FALSE;
priv->selectable = TRUE;
priv->cursor_color_set = FALSE;
priv->password_char = 0;
priv->max_length = 0;
priv->cursor_size = DEFAULT_CURSOR_SIZE;
}
/**
* clutter_text_new:
*
* Creates a new #ClutterText actor. This actor can be used to
* display and edit text.
*
* Return value: the newly created #ClutterText actor
*
* Since: 1.0
*/
ClutterActor *
clutter_text_new (void)
{
return g_object_new (CLUTTER_TYPE_TEXT, NULL);
}
/**
* clutter_text_new_full:
* @font_name: a string with a font description
* @text: the contents of the actor
* @color: the color to be used to render @text
*
* Creates a new #ClutterText actor, using @font_name as the font
* description; @text will be used to set the contents of the actor;
* and @color will be used as the color to render @text.
*
* This function is equivalent to calling clutter_text_new(),
* clutter_text_set_font_name(), clutter_text_set_text() and
* clutter_text_set_color().
*
* Return value: the newly created #ClutterText actor
*
* Since: 1.0
*/
ClutterActor *
clutter_text_new_full (const gchar *font_name,
const gchar *text,
const ClutterColor *color)
{
return g_object_new (CLUTTER_TYPE_TEXT,
"font-name", font_name,
"text", text,
"color", color,
NULL);
}
/**
* clutter_text_new_with_text:
* @font_name: a string with a font description
* @text: the contents of the actor
*
* Creates a new #ClutterText actor, using @font_name as the font
* description; @text will be used to set the contents of the actor.
*
* This function is equivalent to calling clutter_text_new(),
* clutter_text_set_font_name(), and clutter_text_set_text().
*
* Return value: the newly created #ClutterText actor
*
* Since: 1.0
*/
ClutterActor *
clutter_text_new_with_text (const gchar *font_name,
const gchar *text)
{
return g_object_new (CLUTTER_TYPE_TEXT,
"font-name", font_name,
"text", text,
NULL);
}
/**
* clutter_text_set_editable:
* @self: a #ClutterText
* @editable: whether the #ClutterText should be editable
*
* Sets whether the #ClutterText actor should be editable.
*
* An editable #ClutterText with key focus set using
* clutter_actor_grab_key_focus() or clutter_stage_take_key_focus()
* will receive key events and will update its contents accordingly.
*
* Since: 1.0
*/
void
clutter_text_set_editable (ClutterText *self,
gboolean editable)
{
ClutterTextPrivate *priv;
g_return_if_fail (CLUTTER_IS_TEXT (self));
priv = self->priv;
if (priv->editable != editable)
{
priv->editable = editable;
if (CLUTTER_ACTOR_IS_VISIBLE (self))
clutter_actor_queue_redraw (CLUTTER_ACTOR (self));
g_object_notify (G_OBJECT (self), "editable");
}
}
/**
* clutter_text_get_editable:
* @self: a #ClutterText
*
* Retrieves whether a #ClutterText is editable or not.
*
* Return value: %TRUE if the actor is editable
*
* Since: 1.0
*/
gboolean
clutter_text_get_editable (ClutterText *self)
{
g_return_val_if_fail (CLUTTER_IS_TEXT (self), FALSE);
return self->priv->editable;
}
/**
* clutter_text_set_selectable:
* @self: a #ClutterText
* @selectable: whether the #ClutterText actor should be selectable
*
* Sets whether a #ClutterText actor should be selectable.
*
* A selectable #ClutterText will allow selecting its contents using
* the pointer or the keyboard.
*
* Since: 1.0
*/
void
clutter_text_set_selectable (ClutterText *self,
gboolean selectable)
{
ClutterTextPrivate *priv;
g_return_if_fail (CLUTTER_IS_TEXT (self));
priv = self->priv;
if (priv->selectable != selectable)
{
priv->selectable = selectable;
if (CLUTTER_ACTOR_IS_VISIBLE (self))
clutter_actor_queue_redraw (CLUTTER_ACTOR (self));
g_object_notify (G_OBJECT (self), "selectable");
}
}
/**
* clutter_text_get_selectable:
* @self: a #ClutterText
*
* Retrieves whether a #ClutterText is selectable or not.
*
* Return value: %TRUE if the actor is selectable
*
* Since: 1.0
*/
gboolean
clutter_text_get_selectable (ClutterText *self)
{
g_return_val_if_fail (CLUTTER_IS_TEXT (self), TRUE);
return self->priv->selectable;
}
/**
* clutter_text_set_activatable:
* @self: a #ClutterText
* @activatable: whether the #ClutterText actor should be activatable
*
* Sets whether a #ClutterText actor should be activatable.
*
* An activatable #ClutterText actor will emit the #ClutterText::activate
* signal whenever the 'Enter' (or 'Return') key is pressed; if it is not
* activatable, a new line will be appended to the current content.
*
* An activatable #ClutterText must also be set as editable using
* clutter_text_set_editable().
*
* Since: 1.0
*/
void
clutter_text_set_activatable (ClutterText *self,
gboolean activatable)
{
ClutterTextPrivate *priv;
g_return_if_fail (CLUTTER_IS_TEXT (self));
priv = self->priv;
if (priv->activatable != activatable)
{
priv->activatable = activatable;
if (CLUTTER_ACTOR_IS_VISIBLE (self))
clutter_actor_queue_redraw (CLUTTER_ACTOR (self));
g_object_notify (G_OBJECT (self), "activatable");
}
}
/**
* clutter_text_get_activatable:
* @self: a #ClutterText
*
* Retrieves whether a #ClutterText is activatable or not.
*
* Return value: %TRUE if the actor is activatable
*
* Since: 1.0
*/
gboolean
clutter_text_get_activatable (ClutterText *self)
{
g_return_val_if_fail (CLUTTER_IS_TEXT (self), TRUE);
return self->priv->activatable;
}
/**
* clutter_text_activate:
* @self: a #ClutterText
*
* Emits the #ClutterText::activate signal, if @self has been set
* as activatable using clutter_text_set_activatable().
*
* This function can be used to emit the ::activate signal inside
* a #ClutterActor::captured-event or #ClutterActor::key-press-event
* signal handlers before the default signal handler for the
* #ClutterText is invoked.
*
* Return value: %TRUE if the ::activate signal has been emitted,
* and %FALSE otherwise
*
* Since: 1.0
*/
gboolean
clutter_text_activate (ClutterText *self)
{
ClutterTextPrivate *priv;
g_return_val_if_fail (CLUTTER_IS_TEXT (self), FALSE);
priv = self->priv;
if (priv->activatable)
{
g_signal_emit (self, text_signals[ACTIVATE], 0);
return TRUE;
}
return FALSE;
}
/**
* clutter_text_set_cursor_visible:
* @self: a #ClutterText
* @cursor_visible: whether the cursor should be visible
*
* Sets whether the cursor of a #ClutterText actor should be
* visible or not.
*
* The color of the cursor will be the same as the text color
* unless clutter_text_set_cursor_color() has been called.
*
* The size of the cursor can be set using clutter_text_set_cursor_size().
*
* The position of the cursor can be changed programmatically using
* clutter_text_set_cursor_position().
*
* Since: 1.0
*/
void
clutter_text_set_cursor_visible (ClutterText *self,
gboolean cursor_visible)
{
ClutterTextPrivate *priv;
g_return_if_fail (CLUTTER_IS_TEXT (self));
priv = self->priv;
if (priv->cursor_visible != cursor_visible)
{
priv->cursor_visible = cursor_visible;
if (CLUTTER_ACTOR_IS_VISIBLE (self))
clutter_actor_queue_redraw (CLUTTER_ACTOR (self));
g_object_notify (G_OBJECT (self), "cursor-visible");
}
}
/**
* clutter_text_get_cursor_visible:
* @self: a #ClutterText
*
* Retrieves whether the cursor of a #ClutterText actor is visible.
*
* Return value: %TRUE if the cursor is visible
*
* Since: 1.0
*/
gboolean
clutter_text_get_cursor_visible (ClutterText *self)
{
g_return_val_if_fail (CLUTTER_IS_TEXT (self), TRUE);
return self->priv->cursor_visible;
}
/**
* clutter_text_set_cursor_color:
* @self: a #ClutterText
* @color: the color of the cursor, or %NULL to unset it
*
* Sets the color of the cursor of a #ClutterText actor.
*
* If @color is %NULL, the cursor color will be the same as the
* text color.
*
* Since: 1.0
*/
void
clutter_text_set_cursor_color (ClutterText *self,
const ClutterColor *color)
{
ClutterTextPrivate *priv;
g_return_if_fail (CLUTTER_IS_TEXT (self));
priv = self->priv;
if (color)
{
priv->cursor_color = *color;
priv->cursor_color_set = TRUE;
}
else
priv->cursor_color_set = FALSE;
if (CLUTTER_ACTOR_IS_VISIBLE (self))
clutter_actor_queue_redraw (CLUTTER_ACTOR (self));
g_object_notify (G_OBJECT (self), "cursor-color");
g_object_notify (G_OBJECT (self), "cursor-color-set");
}
/**
* clutter_text_get_cursor_color:
* @self: a #ClutterText
* @color: return location for a #ClutterColor
*
* Retrieves the color of the cursor of a #ClutterText actor.
*
* Since: 1.0
*/
void
clutter_text_get_cursor_color (ClutterText *self,
ClutterColor *color)
{
ClutterTextPrivate *priv;
g_return_if_fail (CLUTTER_IS_TEXT (self));
g_return_if_fail (color != NULL);
priv = self->priv;
*color = priv->cursor_color;
}
/**
* clutter_text_set_selection:
* @self: a #ClutterText
* @start_pos: start of the selection, in characters
* @end_pos: end of the selection, in characters
*
* Selects the region of text between @start_pos and @end_pos.
*
* This function changes the position of the cursor to match
* @start_pos and the selection bound to match @end_pos.
*
* Since: 1.0
*/
void
clutter_text_set_selection (ClutterText *self,
gssize start_pos,
gssize end_pos)
{
ClutterTextPrivate *priv;
g_return_if_fail (CLUTTER_IS_TEXT (self));
priv = self->priv;
if (end_pos < 0)
end_pos = priv->n_chars;
start_pos = MIN (priv->n_chars, start_pos);
end_pos = MIN (priv->n_chars, end_pos);
g_object_freeze_notify (G_OBJECT (self));
clutter_text_set_cursor_position (self, start_pos);
clutter_text_set_selection_bound (self, end_pos);
g_object_thaw_notify (G_OBJECT (self));
}
/**
* clutter_text_get_selection:
* @self: a #ClutterText
*
* Retrieves the currently selected text.
*
* Return value: a newly allocated string containing the currently
* selected text, or %NULL. Use g_free() to free the returned
* string.
*
* Since: 1.0
*/
gchar *
clutter_text_get_selection (ClutterText *self)
{
ClutterTextPrivate *priv;
gchar *str;
gint len;
gint start_index, end_index;
gint start_offset, end_offset;
g_return_val_if_fail (CLUTTER_IS_TEXT (self), NULL);
priv = self->priv;
start_index = priv->position;
end_index = priv->selection_bound;
if (end_index == start_index)
return g_strdup ("");
if (end_index < start_index)
{
gint temp = start_index;
start_index = end_index;
end_index = temp;
}
start_offset = offset_to_bytes (priv->text, start_index);
end_offset = offset_to_bytes (priv->text, end_index);
len = end_offset - start_offset;
str = g_malloc (len + 1);
g_utf8_strncpy (str, priv->text + start_offset, end_index - start_index);
return str;
}
/**
* clutter_text_set_selection_bound:
* @self: a #ClutterText
* @selection_bound: the position of the end of the selection, in characters
*
* Sets the other end of the selection, starting from the current
* cursor position.
*
* If @selection_bound is -1, the selection unset.
*
* Since: 1.0
*/
void
clutter_text_set_selection_bound (ClutterText *self,
gint selection_bound)
{
ClutterTextPrivate *priv;
g_return_if_fail (CLUTTER_IS_TEXT (self));
priv = self->priv;
if (priv->selection_bound != selection_bound)
{
priv->selection_bound = selection_bound;
if (CLUTTER_ACTOR_IS_VISIBLE (self))
clutter_actor_queue_redraw (CLUTTER_ACTOR (self));
g_object_notify (G_OBJECT (self), "selection-bound");
}
}
/**
* clutter_text_get_selection_bound:
* @self: a #ClutterText
*
* Retrieves the other end of the selection of a #ClutterText actor,
* in characters from the current cursor position.
*
* Return value: the position of the other end of the selection
*
* Since: 1.0
*/
gint
clutter_text_get_selection_bound (ClutterText *self)
{
g_return_val_if_fail (CLUTTER_IS_TEXT (self), -1);
return self->priv->selection_bound;
}
/**
* clutter_text_get_font_name:
* @self: a #ClutterText
*
* Retrieves the font name as set by clutter_text_set_font_name().
*
* Return value: a string containing the font name. The returned
* string is owned by the #ClutterText actor and should not be
* modified or freed
*
* Since: 1.0
*/
G_CONST_RETURN gchar *
clutter_text_get_font_name (ClutterText *text)
{
g_return_val_if_fail (CLUTTER_IS_TEXT (text), NULL);
return text->priv->font_name;
}
/**
* clutter_text_set_font_name:
* @self: a #ClutterText
* @font_name: a font name, or %NULL to set the default font name
*
* Sets the font used by a #ClutterText. The @font_name string
* must either be %NULL, which means that the font name from the
* default #ClutterBackend will be used; or be something that can
* be parsed by the pango_font_description_from_string() function,
* like:
*
* |[
* clutter_text_set_font_name (text, "Sans 10pt");
* clutter_text_set_font_name (text, "Serif 16px");
* clutter_text_set_font_name (text, "Helvetica 10");
* ]|
*
* Since: 1.0
*/
void
clutter_text_set_font_name (ClutterText *self,
const gchar *font_name)
{
ClutterTextPrivate *priv;
PangoFontDescription *desc;
g_return_if_fail (CLUTTER_IS_TEXT (self));
/* get the default font name from the backend */
if (!font_name || font_name[0] == '\0')
font_name = clutter_backend_get_font_name (clutter_get_default_backend ());
priv = self->priv;
if (priv->font_name && strcmp (priv->font_name, font_name) == 0)
return;
desc = pango_font_description_from_string (font_name);
if (!desc)
{
g_warning ("Attempting to create a PangoFontDescription for "
"font name `%s', but failed.",
font_name);
return;
}
g_free (priv->font_name);
priv->font_name = g_strdup (font_name);
if (priv->font_desc)
pango_font_description_free (priv->font_desc);
priv->font_desc = desc;
clutter_text_dirty_cache (self);
if (priv->text && priv->text[0] != '\0')
clutter_actor_queue_relayout (CLUTTER_ACTOR (self));
g_object_notify (G_OBJECT (self), "font-name");
}
/**
* clutter_text_get_text:
* @self: a #ClutterText
*
* Retrieves a pointer to the current contents of a #ClutterText
* actor.
*
* If you need a copy of the contents for manipulating, either
* use g_strdup() on the returned string, or use:
*
* |[
* copy = clutter_text_get_chars (text, 0, -1);
* ]|
*
* Which will return a newly allocated string.
*
* Return value: the contents of the actor. The returned string
* is owned by the #ClutterText actor and should never be
* modified or freed
*
* Since: 1.0
*/
G_CONST_RETURN gchar *
clutter_text_get_text (ClutterText *self)
{
g_return_val_if_fail (CLUTTER_IS_TEXT (self), NULL);
return self->priv->text;
}
/**
* clutter_text_set_text:
* @self: a #ClutterText
* @text: the text to set
*
* Sets the contents of a #ClutterText actor. The @text string
* must not be %NULL; to unset the current contents of the
* #ClutterText actor simply pass "" (an empty string).
*
* Since: 1.0
*/
void
clutter_text_set_text (ClutterText *self,
const gchar *text)
{
ClutterTextPrivate *priv;
g_return_if_fail (CLUTTER_IS_TEXT (self));
g_return_if_fail (text != NULL);
priv = self->priv;
if (priv->max_length > 0)
{
gint len = g_utf8_strlen (text, -1);
if (len < priv->max_length)
{
g_free (priv->text);
priv->text = g_strdup (text);
priv->n_bytes = strlen (text);
priv->n_chars = len;
}
else
{
gchar *n = g_malloc0 (priv->max_length + 1);
g_free (priv->text);
g_utf8_strncpy (n, text, priv->max_length);
priv->text = n;
priv->n_bytes = strlen (n);
priv->n_chars = priv->max_length;
}
}
else
{
g_free (priv->text);
priv->text = g_strdup (text);
priv->n_bytes = strlen (text);
priv->n_chars = g_utf8_strlen (text, -1);
}
clutter_text_dirty_cache (self);
clutter_actor_queue_relayout (CLUTTER_ACTOR (self));
g_signal_emit (self, text_signals[TEXT_CHANGED], 0);
g_object_notify (G_OBJECT (self), "text");
}
/**
* clutter_text_get_layout:
* @self: a #ClutterText
*
* Retrieves the current #PangoLayout used by a #ClutterText actor.
*
* Return value: a #PangoLayout. The returned object is owned by
* the #ClutterText actor and should not be modified or freed
*
* Since: 1.0
*/
PangoLayout *
clutter_text_get_layout (ClutterText *self)
{
ClutterUnit width;
g_return_val_if_fail (CLUTTER_IS_TEXT (self), NULL);
width = clutter_actor_get_widthu (CLUTTER_ACTOR (self));
return clutter_text_create_layout (self, width);
}
/**
* clutter_text_set_color:
* @self: a #ClutterText
* @color: a #ClutterColor
*
* Sets the color of the contents of a #ClutterText actor.
*
* The overall opacity of the #ClutterText actor will be the
* result of the alpha value of @color and the composited
* opacity of the actor itself on the scenegraph, as returned
* by clutter_actor_get_paint_opacity().
*
* Since: 1.0
*/
void
clutter_text_set_color (ClutterText *self,
const ClutterColor *color)
{
ClutterTextPrivate *priv;
g_return_if_fail (CLUTTER_IS_TEXT (self));
g_return_if_fail (color != NULL);
priv = self->priv;
priv->text_color = *color;
if (CLUTTER_ACTOR_IS_VISIBLE (self))
clutter_actor_queue_redraw (CLUTTER_ACTOR (self));
g_object_notify (G_OBJECT (self), "color");
}
/**
* clutter_text_get_color:
* @self: a #ClutterText
* @color: return location for a #ClutterColor
*
* Retrieves the text color as set by clutter_text_get_color().
*
* Since: 1.0
*/
void
clutter_text_get_color (ClutterText *self,
ClutterColor *color)
{
ClutterTextPrivate *priv;
g_return_if_fail (CLUTTER_IS_TEXT (self));
g_return_if_fail (color != NULL);
priv = self->priv;
*color = priv->text_color;
}
/**
* clutter_text_set_ellipsize:
* @self: a #ClutterText
* @mode: a #PangoEllipsizeMode
*
* Sets the mode used to ellipsize (add an ellipsis: "...") to the
* text if there is not enough space to render the entire contents
* of a #ClutterText actor
*
* Since: 1.0
*/
void
clutter_text_set_ellipsize (ClutterText *self,
PangoEllipsizeMode mode)
{
ClutterTextPrivate *priv;
g_return_if_fail (CLUTTER_IS_TEXT (self));
g_return_if_fail (mode >= PANGO_ELLIPSIZE_NONE &&
mode <= PANGO_ELLIPSIZE_END);
priv = self->priv;
if ((PangoEllipsizeMode) priv->ellipsize != mode)
{
priv->ellipsize = mode;
clutter_text_dirty_cache (self);
clutter_actor_queue_relayout (CLUTTER_ACTOR (self));
g_object_notify (G_OBJECT (self), "ellipsize");
}
}
/**
* clutter_text_get_ellipsize:
* @self: a #ClutterText
*
* Returns the ellipsizing position of a #ClutterText actor, as
* set by clutter_text_set_ellipsize().
*
* Return value: #PangoEllipsizeMode
*
* Since: 1.0
*/
PangoEllipsizeMode
clutter_text_get_ellipsize (ClutterText *self)
{
g_return_val_if_fail (CLUTTER_IS_TEXT (self), PANGO_ELLIPSIZE_NONE);
return self->priv->ellipsize;
}
/**
* clutter_text_get_line_wrap:
* @self: a #ClutterText
*
* Retrieves the value set using clutter_text_set_line_wrap().
*
* Return value: %TRUE if the #ClutterText actor should wrap
* its contents
*
* Since: 1.0
*/
gboolean
clutter_text_get_line_wrap (ClutterText *self)
{
g_return_val_if_fail (CLUTTER_IS_TEXT (self), FALSE);
return self->priv->wrap;
}
/**
* clutter_text_set_line_wrap:
* @self: a #ClutterText
* @line_wrap: whether the contents should wrap
*
* Sets whether the contents of a #ClutterText actor should wrap,
* if they don't fit the size assigned to the actor.
*
* Since: 1.0
*/
void
clutter_text_set_line_wrap (ClutterText *self,
gboolean line_wrap)
{
ClutterTextPrivate *priv;
g_return_if_fail (CLUTTER_IS_TEXT (self));
priv = self->priv;
if (priv->wrap != line_wrap)
{
priv->wrap = line_wrap;
clutter_text_dirty_cache (self);
clutter_actor_queue_relayout (CLUTTER_ACTOR (self));
g_object_notify (G_OBJECT (self), "line-wrap");
}
}
/**
* clutter_text_set_line_wrap_mode:
* @self: a #ClutterText
* @wrap_mode: the line wrapping mode
*
* If line wrapping is enabled (see clutter_text_set_line_wrap()) this
* function controls how the line wrapping is performed. The default is
* %PANGO_WRAP_WORD which means wrap on word boundaries.
*
* Since: 1.0
*/
void
clutter_text_set_line_wrap_mode (ClutterText *self,
PangoWrapMode wrap_mode)
{
ClutterTextPrivate *priv;
g_return_if_fail (CLUTTER_IS_TEXT (self));
priv = self->priv;
if (priv->wrap_mode != wrap_mode)
{
priv->wrap_mode = wrap_mode;
clutter_text_dirty_cache (self);
clutter_actor_queue_relayout (CLUTTER_ACTOR (self));
g_object_notify (G_OBJECT (self), "line-wrap-mode");
}
}
/**
* clutter_text_get_line_wrap_mode:
* @self: a #ClutterText
*
* Retrieves the line wrap mode used by the #ClutterText actor.
*
* See clutter_text_set_line_wrap_mode ().
*
* Return value: the wrap mode used by the #ClutterText
*
* Since: 1.0
*/
PangoWrapMode
clutter_text_get_line_wrap_mode (ClutterText *self)
{
g_return_val_if_fail (CLUTTER_IS_TEXT (self), PANGO_WRAP_WORD);
return self->priv->wrap_mode;
}
/**
* clutter_text_set_attributes:
* @self: a #ClutterText
* @attrs: a #PangoAttrList or %NULL to unset the attributes
*
* Sets the attributes list that are going to be applied to the
* #ClutterText contents. The attributes set with this function
* will be ignored if the #ClutterText:use_markup property is
* set to %TRUE.
*
* The #ClutterText actor will take a reference on the #PangoAttrList
* passed to this function.
*
* Since: 1.0
*/
void
clutter_text_set_attributes (ClutterText *self,
PangoAttrList *attrs)
{
ClutterTextPrivate *priv;
g_return_if_fail (CLUTTER_IS_TEXT (self));
priv = self->priv;
if (attrs)
pango_attr_list_ref (attrs);
if (priv->attrs)
pango_attr_list_unref (priv->attrs);
if (!priv->use_markup)
{
if (attrs)
pango_attr_list_ref (attrs);
if (priv->effective_attrs)
pango_attr_list_unref (priv->effective_attrs);
priv->effective_attrs = attrs;
}
priv->attrs = attrs;
clutter_text_dirty_cache (self);
g_object_notify (G_OBJECT (self), "attributes");
clutter_actor_queue_relayout (CLUTTER_ACTOR (self));
}
/**
* clutter_text_get_attributes:
* @self: a #ClutterText
*
* Gets the attribute list that was set on the #ClutterText actor
* clutter_text_set_attributes(), if any.
*
* Return value: the attribute list, or %NULL if none was set. The
* returned value is owned by the #ClutterText and should not be
* unreferenced.
*
* Since: 1.0
*/
PangoAttrList *
clutter_text_get_attributes (ClutterText *self)
{
g_return_val_if_fail (CLUTTER_IS_TEXT (self), NULL);
return self->priv->attrs;
}
/**
* clutter_text_set_alignment:
* @self: a #ClutterText
* @alignment: A #PangoAlignment
*
* Sets text alignment of the #ClutterText actor.
*
* The alignment will only be used when the contents of the
* #ClutterText actor are enough to wrap, and the #ClutterText:line-wrap
* property is set to %TRUE.
*
* Since: 1.0
*/
void
clutter_text_set_alignment (ClutterText *self,
PangoAlignment alignment)
{
ClutterTextPrivate *priv;
g_return_if_fail (CLUTTER_IS_TEXT (self));
priv = self->priv;
if (priv->alignment != alignment)
{
priv->alignment = alignment;
clutter_text_dirty_cache (self);
clutter_actor_queue_relayout (CLUTTER_ACTOR (self));
g_object_notify (G_OBJECT (self), "alignment");
}
}
/**
* clutter_text_get_alignment:
* @self: a #ClutterText
*
* Retrieves the alignment of @self.
*
* Return value: a #PangoAlignment
*
* Since 1.0
*/
PangoAlignment
clutter_text_get_alignment (ClutterText *self)
{
g_return_val_if_fail (CLUTTER_IS_TEXT (self), PANGO_ALIGN_LEFT);
return self->priv->alignment;
}
/**
* clutter_text_set_use_markup:
* @self: a #ClutterText
* @setting: %TRUE if the text should be parsed for markup.
*
* Sets whether the contents of the #ClutterText actor contains markup
* in <link linkend="PangoMarkupFormat">Pango's text markup language</link>.
*
* Since: 1.0
*/
void
clutter_text_set_use_markup (ClutterText *self,
gboolean setting)
{
ClutterTextPrivate *priv;
g_return_if_fail (CLUTTER_IS_TEXT (self));
priv = self->priv;
if (priv->use_markup != setting)
{
priv->use_markup = setting;
clutter_text_dirty_cache (self);
clutter_actor_queue_relayout (CLUTTER_ACTOR (self));
g_object_notify (G_OBJECT (self), "use-markup");
}
}
/**
* clutter_text_get_use_markup:
* @self: a #ClutterText
*
* Retrieves whether the contents of the #ClutterText actor should be
* parsed for the Pango text markup.
*
* Return value: %TRUE if the contents will be parsed for markup
*
* Since: 1.0
*/
gboolean
clutter_text_get_use_markup (ClutterText *self)
{
g_return_val_if_fail (CLUTTER_IS_TEXT (self), FALSE);
return self->priv->use_markup;
}
/**
* clutter_text_set_justify:
* @self: a #ClutterText
* @justify: whether the text should be justified
*
* Sets whether the text of the #ClutterText actor should be justified
* on both margins. This setting is ignored if Clutter is compiled
* against Pango &lt; 1.18.
*
* Since: 1.0
*/
void
clutter_text_set_justify (ClutterText *self,
gboolean justify)
{
ClutterTextPrivate *priv;
g_return_if_fail (CLUTTER_IS_TEXT (self));
priv = self->priv;
if (priv->justify != justify)
{
priv->justify = justify;
clutter_text_dirty_cache (self);
clutter_actor_queue_relayout (CLUTTER_ACTOR (self));
g_object_notify (G_OBJECT (self), "justify");
}
}
/**
* clutter_text_get_justify:
* @self: a #ClutterText
*
* Retrieves whether the #ClutterText actor should justify its contents
* on both margins.
*
* Return value: %TRUE if the text should be justified
*
* Since: 0.6
*/
gboolean
clutter_text_get_justify (ClutterText *self)
{
g_return_val_if_fail (CLUTTER_IS_TEXT (self), FALSE);
return self->priv->justify;
}
/**
* clutter_text_get_cursor_position:
* @self: a #ClutterText
*
* Retrieves the cursor position.
*
* Return value: the cursor position, in characters
*
* Since: 1.0
*/
gint
clutter_text_get_cursor_position (ClutterText *self)
{
g_return_val_if_fail (CLUTTER_IS_TEXT (self), -1);
return self->priv->position;
}
/**
* clutter_text_set_cursor_position:
* @self: a #ClutterText
* @position: the new cursor position, in characters
*
* Sets the cursor of a #ClutterText actor at @position.
*
* The position is expressed in characters, not in bytes.
*
* Since: 1.0
*/
void
clutter_text_set_cursor_position (ClutterText *self,
gint position)
{
ClutterTextPrivate *priv;
gint len;
g_return_if_fail (CLUTTER_IS_TEXT (self));
priv = self->priv;
len = priv->n_chars;
if (position < 0 || position >= len)
priv->position = -1;
else
priv->position = position;
if (CLUTTER_ACTOR_IS_VISIBLE (self))
clutter_actor_queue_redraw (CLUTTER_ACTOR (self));
}
/**
* clutter_text_set_cursor_size:
* @self: a #ClutterText
* @size: the size of the cursor, in pixels, or -1 to use the
* default value
*
* Sets the size of the cursor of a #ClutterText. The cursor
* will only be visible if the #ClutterText:cursor-visible property
* is set to %TRUE.
*
* Since: 1.0
*/
void
clutter_text_set_cursor_size (ClutterText *self,
gint size)
{
ClutterTextPrivate *priv;
g_return_if_fail (CLUTTER_IS_TEXT (self));
priv = self->priv;
if (priv->cursor_size != size)
{
if (size < 0)
size = DEFAULT_CURSOR_SIZE;
priv->cursor_size = size;
if (CLUTTER_ACTOR_IS_VISIBLE (self))
clutter_actor_queue_redraw (CLUTTER_ACTOR (self));
g_object_notify (G_OBJECT (self), "cursor-size");
}
}
/**
* clutter_text_get_cursor_size:
* @self: a #ClutterText
*
* Retrieves the size of the cursor of a #ClutterText actor.
*
* Return value: the size of the cursor, in pixels
*
* Since: 1.0
*/
guint
clutter_text_get_cursor_size (ClutterText *self)
{
g_return_val_if_fail (CLUTTER_IS_TEXT (self), DEFAULT_CURSOR_SIZE);
return self->priv->cursor_size;
}
/**
* clutter_text_set_password_char:
* @self: a #ClutterText
* @wc: a Unicode character, or 0
*
* Sets the character to use in place of the actual text in a
* password text actor.
*
* If @wc is 0 the text will be displayed as it is entered in the
* #ClutterText actor.
*
* Since: 1.0
*/
void
clutter_text_set_password_char (ClutterText *self,
gunichar wc)
{
ClutterTextPrivate *priv;
g_return_if_fail (CLUTTER_IS_TEXT (self));
priv = self->priv;
if (priv->password_char != wc)
{
priv->password_char = wc;
clutter_text_dirty_cache (self);
clutter_actor_queue_relayout (CLUTTER_ACTOR (self));
g_object_notify (G_OBJECT (self), "password-char");
}
}
/**
* clutter_text_get_password_char:
* @self: a #ClutterText
*
* Retrieves the character to use in place of the actual text
* as set by clutter_text_set_password_char().
*
* Return value: a Unicode character or 0 if the password
* character is not set
*
* Since: 1.0
*/
gunichar
clutter_text_get_password_char (ClutterText *self)
{
g_return_val_if_fail (CLUTTER_IS_TEXT (self), 0);
return self->priv->password_char;
}
/**
* clutter_text_set_max_length:
* @self: a #ClutterText
* @max: the maximum number of characters allowed in the text actor; 0
* to disable or -1 to set the length of the current string
*
* Sets the maximum allowed length of the contents of the actor. If the
* current contents are longer than the given length, then they will be
* truncated to fit.
*
* Since: 1.0
*/
void
clutter_text_set_max_length (ClutterText *self,
gint max)
{
ClutterTextPrivate *priv;
gchar *new = NULL;
g_return_if_fail (CLUTTER_IS_TEXT (self));
priv = self->priv;
if (priv->max_length != max)
{
if (max < 0)
max = priv->n_chars;
priv->max_length = max;
new = g_strdup (priv->text);
clutter_text_set_text (self, new);
g_free (new);
g_object_notify (G_OBJECT (self), "max-length");
}
}
/**
* clutter_text_get_max_length:
* @self: a #ClutterText
*
* Gets the maximum length of text that can be set into a text actor.
*
* See clutter_text_set_max_length().
*
* Return value: the maximum number of characters.
*
* Since: 1.0
*/
gint
clutter_text_get_max_length (ClutterText *self)
{
g_return_val_if_fail (CLUTTER_IS_TEXT (self), 0);
return self->priv->max_length;
}
/**
* clutter_text_insert_unichar:
* @self: a #ClutterText
* @wc: a Unicode character
*
* Inserts @wc at the current cursor position of a
* #ClutterText actor.
*
* Since: 1.0
*/
void
clutter_text_insert_unichar (ClutterText *self,
gunichar wc)
{
ClutterTextPrivate *priv;
GString *new = NULL;
glong pos;
g_return_if_fail (CLUTTER_IS_TEXT (self));
g_return_if_fail (g_unichar_validate (wc));
if (wc == 0)
return;
priv = self->priv;
new = g_string_new (priv->text);
if (priv->text)
pos = offset_to_bytes (priv->text, priv->position);
else
pos = 0;
new = g_string_insert_unichar (new, pos, wc);
clutter_text_set_text (self, new->str);
if (priv->position >= 0)
{
clutter_text_set_cursor_position (self, priv->position + 1);
clutter_text_set_selection_bound (self, priv->position);
}
g_string_free (new, TRUE);
}
/**
* clutter_text_insert_text:
* @self: a #ClutterText
* @text: the text to be inserted
* @position: the position of the insertion, or -1
*
* Inserts @text into a #ClutterActor at the given position.
*
* If @position is a negative number, the text will be appended
* at the end of the current contents of the #ClutterText.
*
* The position is expressed in characters, not in bytes.
*
* Since: 1.0
*/
void
clutter_text_insert_text (ClutterText *self,
const gchar *text,
gssize position)
{
ClutterTextPrivate *priv;
GString *new = NULL;
g_return_if_fail (CLUTTER_IS_TEXT (self));
g_return_if_fail (text != NULL);
priv = self->priv;
new = g_string_new (priv->text);
new = g_string_insert (new, position, text);
clutter_text_set_text (self, new->str);
g_string_free (new, TRUE);
}
/**
* clutter_text_delete_text:
* @self: a #ClutterText
* @start_pos: starting position
* @end_pos: ending position
*
* Deletes the text inside a #ClutterText actor between @start_pos
* and @end_pos.
*
* The starting and ending positions are expressed in characters,
* not in bytes.
*
* Since: 1.0
*/
void
clutter_text_delete_text (ClutterText *self,
gssize start_pos,
gssize end_pos)
{
ClutterTextPrivate *priv;
GString *new = NULL;
gint start_bytes;
gint end_bytes;
g_return_if_fail (CLUTTER_IS_TEXT (self));
priv = self->priv;
if (!priv->text)
return;
if (start_pos == 0)
start_bytes = 0;
else
start_bytes = offset_to_bytes (priv->text, start_pos);
if (end_pos == -1)
end_bytes = offset_to_bytes (priv->text, priv->n_chars);
else
end_bytes = offset_to_bytes (priv->text, end_pos);
new = g_string_new (priv->text);
new = g_string_erase (new, start_bytes, end_bytes - start_bytes);
clutter_text_set_text (self, new->str);
g_string_free (new, TRUE);
}
/**
* clutter_text_delete_chars:
* @self: a #ClutterText
* @n_chars: the number of characters to delete
*
* Deletes @n_chars inside a #ClutterText actor, starting from the
* current cursor position.
*
* Since: 1.0
*/
void
clutter_text_delete_chars (ClutterText *self,
guint n_chars)
{
ClutterTextPrivate *priv;
GString *new = NULL;
gint len;
gint pos;
gint num_pos;
g_return_if_fail (CLUTTER_IS_TEXT (self));
priv = self->priv;
if (!priv->text)
return;
len = priv->n_chars;
new = g_string_new (priv->text);
if (priv->position == -1)
{
num_pos = offset_to_bytes (priv->text, priv->n_chars - n_chars);
new = g_string_erase (new, num_pos, -1);
}
else
{
pos = offset_to_bytes (priv->text, priv->position - n_chars);
num_pos = offset_to_bytes (priv->text, priv->position);
new = g_string_erase (new, pos, num_pos - pos);
}
clutter_text_set_text (self, new->str);
if (priv->position > 0)
clutter_text_set_cursor_position (self, priv->position - n_chars);
g_string_free (new, TRUE);
g_object_notify (G_OBJECT (self), "text");
}
/**
* clutter_text_get_chars:
* @self: a #ClutterText
* @start_pos: start of text, in characters
* @end_pos: end of text, in characters
*
* Retrieves the contents of the #ClutterText actor between
* @start_pos and @end_pos.
*
* The positions are specified in characters, not in bytes.
*
* Return value: a newly allocated string with the contents of
* the text actor between the specified positions. Use g_free()
* to free the resources when done
*
* Since: 1.0
*/
gchar *
clutter_text_get_chars (ClutterText *self,
gssize start_pos,
gssize end_pos)
{
ClutterTextPrivate *priv;
gint start_index, end_index;
g_return_val_if_fail (CLUTTER_IS_TEXT (self), NULL);
priv = self->priv;
if (end_pos < 0)
end_pos = priv->n_chars;
start_pos = MIN (priv->n_chars, start_pos);
end_pos = MIN (priv->n_chars, end_pos);
start_index = g_utf8_offset_to_pointer (priv->text, start_pos)
- priv->text;
end_index = g_utf8_offset_to_pointer (priv->text, end_pos)
- priv->text;
return g_strndup (priv->text + start_index, end_index - start_index);
}
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