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gimp/app/widgets/gimptextbuffer.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* GimpTextBuffer
* Copyright (C) 2010 Michael Natterer <mitch@gimp.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <stdlib.h>
#include <gegl.h>
#include <gtk/gtk.h>
#include "libgimpbase/gimpbase.h"
#include "libgimpcolor/gimpcolor.h"
#include "widgets-types.h"
#include "gimptextbuffer.h"
#include "gimptextbuffer-serialize.h"
#include "gimptexttag.h"
#include "gimpwidgets-utils.h"
#include "gimp-intl.h"
/* local function prototypes */
static void gimp_text_buffer_constructed (GObject *object);
static void gimp_text_buffer_dispose (GObject *object);
static void gimp_text_buffer_finalize (GObject *object);
static void gimp_text_buffer_mark_set (GtkTextBuffer *buffer,
const GtkTextIter *location,
GtkTextMark *mark);
G_DEFINE_TYPE (GimpTextBuffer, gimp_text_buffer, GTK_TYPE_TEXT_BUFFER)
#define parent_class gimp_text_buffer_parent_class
static void
gimp_text_buffer_class_init (GimpTextBufferClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkTextBufferClass *buffer_class = GTK_TEXT_BUFFER_CLASS (klass);
object_class->constructed = gimp_text_buffer_constructed;
object_class->dispose = gimp_text_buffer_dispose;
object_class->finalize = gimp_text_buffer_finalize;
buffer_class->mark_set = gimp_text_buffer_mark_set;
}
static void
gimp_text_buffer_init (GimpTextBuffer *buffer)
{
buffer->markup_atom =
gtk_text_buffer_register_serialize_format (GTK_TEXT_BUFFER (buffer),
"application/x-gimp-pango-markup",
gimp_text_buffer_serialize,
NULL, NULL);
gtk_text_buffer_register_deserialize_format (GTK_TEXT_BUFFER (buffer),
"application/x-gimp-pango-markup",
gimp_text_buffer_deserialize,
NULL, NULL);
}
static void
gimp_text_buffer_constructed (GObject *object)
{
GimpTextBuffer *buffer = GIMP_TEXT_BUFFER (object);
G_OBJECT_CLASS (parent_class)->constructed (object);
gtk_text_buffer_set_text (GTK_TEXT_BUFFER (buffer), "", -1);
buffer->bold_tag = gtk_text_buffer_create_tag (GTK_TEXT_BUFFER (buffer),
"bold",
"weight", PANGO_WEIGHT_BOLD,
NULL);
buffer->italic_tag = gtk_text_buffer_create_tag (GTK_TEXT_BUFFER (buffer),
"italic",
"style", PANGO_STYLE_ITALIC,
NULL);
buffer->underline_tag = gtk_text_buffer_create_tag (GTK_TEXT_BUFFER (buffer),
"underline",
"underline", PANGO_UNDERLINE_SINGLE,
NULL);
buffer->strikethrough_tag = gtk_text_buffer_create_tag (GTK_TEXT_BUFFER (buffer),
"strikethrough",
"strikethrough", TRUE,
NULL);
}
static void
gimp_text_buffer_dispose (GObject *object)
{
/* GimpTextBuffer *buffer = GIMP_TEXT_BUFFER (object); */
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gimp_text_buffer_finalize (GObject *object)
{
GimpTextBuffer *buffer = GIMP_TEXT_BUFFER (object);
if (buffer->size_tags)
{
g_list_free (buffer->size_tags);
buffer->size_tags = NULL;
}
if (buffer->baseline_tags)
{
g_list_free (buffer->baseline_tags);
buffer->baseline_tags = NULL;
}
if (buffer->kerning_tags)
{
g_list_free (buffer->kerning_tags);
buffer->kerning_tags = NULL;
}
if (buffer->font_tags)
{
g_list_free (buffer->font_tags);
buffer->font_tags = NULL;
}
if (buffer->color_tags)
{
g_list_free (buffer->color_tags);
buffer->color_tags = NULL;
}
gimp_text_buffer_clear_insert_tags (buffer);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gimp_text_buffer_mark_set (GtkTextBuffer *buffer,
const GtkTextIter *location,
GtkTextMark *mark)
{
gimp_text_buffer_clear_insert_tags (GIMP_TEXT_BUFFER (buffer));
GTK_TEXT_BUFFER_CLASS (parent_class)->mark_set (buffer, location, mark);
}
/* public functions */
GimpTextBuffer *
gimp_text_buffer_new (void)
{
return g_object_new (GIMP_TYPE_TEXT_BUFFER, NULL);
}
void
gimp_text_buffer_set_text (GimpTextBuffer *buffer,
const gchar *text)
{
g_return_if_fail (GIMP_IS_TEXT_BUFFER (buffer));
if (text == NULL)
text = "";
gtk_text_buffer_set_text (GTK_TEXT_BUFFER (buffer), text, -1);
gimp_text_buffer_clear_insert_tags (buffer);
}
gchar *
gimp_text_buffer_get_text (GimpTextBuffer *buffer)
{
GtkTextIter start, end;
g_return_val_if_fail (GIMP_IS_TEXT_BUFFER (buffer), NULL);
gtk_text_buffer_get_bounds (GTK_TEXT_BUFFER (buffer), &start, &end);
return gtk_text_buffer_get_text (GTK_TEXT_BUFFER (buffer),
&start, &end, TRUE);
}
void
gimp_text_buffer_set_markup (GimpTextBuffer *buffer,
const gchar *markup)
{
g_return_if_fail (GIMP_IS_TEXT_BUFFER (buffer));
gimp_text_buffer_set_text (buffer, NULL);
if (markup)
{
GtkTextTagTable *tag_table;
GtkTextBuffer *content;
GtkTextIter insert;
GError *error = NULL;
tag_table = gtk_text_buffer_get_tag_table (GTK_TEXT_BUFFER (buffer));
content = gtk_text_buffer_new (tag_table);
gtk_text_buffer_get_start_iter (content, &insert);
if (! gtk_text_buffer_deserialize (GTK_TEXT_BUFFER (buffer),
content,
buffer->markup_atom,
&insert,
(const guint8 *) markup, -1,
&error))
{
g_printerr ("EEK: %s\n", error->message);
g_clear_error (&error);
}
else
{
GtkTextIter start, end;
gimp_text_buffer_post_deserialize (buffer, content);
gtk_text_buffer_get_bounds (content, &start, &end);
gtk_text_buffer_get_start_iter (GTK_TEXT_BUFFER (buffer), &insert);
gtk_text_buffer_insert_range (GTK_TEXT_BUFFER (buffer),
&insert, &start, &end);
}
g_object_unref (content);
}
gimp_text_buffer_clear_insert_tags (buffer);
}
gchar *
gimp_text_buffer_get_markup (GimpTextBuffer *buffer)
{
GtkTextTagTable *tag_table;
GtkTextBuffer *content;
GtkTextIter insert;
GtkTextIter start, end;
gchar *markup;
gsize length;
g_return_val_if_fail (GIMP_IS_TEXT_BUFFER (buffer), NULL);
tag_table = gtk_text_buffer_get_tag_table (GTK_TEXT_BUFFER (buffer));
content = gtk_text_buffer_new (tag_table);
gtk_text_buffer_get_bounds (GTK_TEXT_BUFFER (buffer), &start, &end);
gtk_text_buffer_get_start_iter (content, &insert);
gtk_text_buffer_insert_range (content, &insert, &start, &end);
gimp_text_buffer_pre_serialize (buffer, content);
gtk_text_buffer_get_bounds (content, &start, &end);
markup = (gchar *) gtk_text_buffer_serialize (GTK_TEXT_BUFFER (buffer),
content,
buffer->markup_atom,
&start, &end,
&length);
g_object_unref (content);
return markup;
}
gboolean
gimp_text_buffer_has_markup (GimpTextBuffer *buffer)
{
GtkTextIter iter;
g_return_val_if_fail (GIMP_IS_TEXT_BUFFER (buffer), FALSE);
gtk_text_buffer_get_start_iter (GTK_TEXT_BUFFER (buffer), &iter);
do
{
GSList *tags = gtk_text_iter_get_tags (&iter);
if (tags)
{
g_slist_free (tags);
return TRUE;
}
}
while (gtk_text_iter_forward_char (&iter));
return FALSE;
}
GtkTextTag *
gimp_text_buffer_get_iter_size (GimpTextBuffer *buffer,
const GtkTextIter *iter,
gint *size)
{
GList *list;
for (list = buffer->size_tags; list; list = g_list_next (list))
{
GtkTextTag *tag = list->data;
if (gtk_text_iter_has_tag (iter, tag))
{
if (size)
*size = gimp_text_tag_get_size (tag);
return tag;
}
}
if (size)
*size = 0;
return NULL;
}
GtkTextTag *
gimp_text_buffer_get_size_tag (GimpTextBuffer *buffer,
gint size)
{
GList *list;
GtkTextTag *tag;
gchar name[32];
for (list = buffer->size_tags; list; list = g_list_next (list))
{
tag = list->data;
if (size == gimp_text_tag_get_size (tag))
return tag;
}
g_snprintf (name, sizeof (name), "size-%d", size);
tag = gtk_text_buffer_create_tag (GTK_TEXT_BUFFER (buffer),
name,
GIMP_TEXT_PROP_NAME_SIZE, size,
NULL);
buffer->size_tags = g_list_prepend (buffer->size_tags, tag);
return tag;
}
void
gimp_text_buffer_set_size (GimpTextBuffer *buffer,
const GtkTextIter *start,
const GtkTextIter *end,
gint size)
{
GList *list;
g_return_if_fail (GIMP_IS_TEXT_BUFFER (buffer));
g_return_if_fail (start != NULL);
g_return_if_fail (end != NULL);
if (gtk_text_iter_equal (start, end))
return;
gtk_text_buffer_begin_user_action (GTK_TEXT_BUFFER (buffer));
for (list = buffer->size_tags; list; list = g_list_next (list))
{
gtk_text_buffer_remove_tag (GTK_TEXT_BUFFER (buffer), list->data,
start, end);
}
if (size != 0)
{
GtkTextTag *tag;
tag = gimp_text_buffer_get_size_tag (buffer, size);
gtk_text_buffer_apply_tag (GTK_TEXT_BUFFER (buffer), tag,
start, end);
}
gtk_text_buffer_end_user_action (GTK_TEXT_BUFFER (buffer));
}
void
gimp_text_buffer_change_size (GimpTextBuffer *buffer,
const GtkTextIter *start,
const GtkTextIter *end,
gint count)
{
GtkTextIter iter;
GtkTextIter span_start;
GtkTextIter span_end;
GtkTextTag *span_tag;
gint span_size;
g_return_if_fail (GIMP_IS_TEXT_BUFFER (buffer));
g_return_if_fail (start != NULL);
g_return_if_fail (end != NULL);
if (gtk_text_iter_equal (start, end))
return;
iter = *start;
span_start = *start;
span_tag = gimp_text_buffer_get_iter_size (buffer, &iter,
&span_size);
gtk_text_buffer_begin_user_action (GTK_TEXT_BUFFER (buffer));
do
{
GtkTextTag *iter_tag;
gint iter_size;
gtk_text_iter_forward_char (&iter);
iter_tag = gimp_text_buffer_get_iter_size (buffer, &iter,
&iter_size);
span_end = iter;
if (iter_size != span_size ||
gtk_text_iter_compare (&iter, end) >= 0)
{
if (span_size != 0)
{
gtk_text_buffer_remove_tag (GTK_TEXT_BUFFER (buffer), span_tag,
&span_start, &span_end);
}
if ((span_size + count) > 0)
{
span_tag = gimp_text_buffer_get_size_tag (buffer,
span_size + count);
gtk_text_buffer_apply_tag (GTK_TEXT_BUFFER (buffer), span_tag,
&span_start, &span_end);
}
span_start = iter;
span_size = iter_size;
span_tag = iter_tag;
}
/* We might have moved too far */
if (gtk_text_iter_compare (&iter, end) > 0)
iter = *end;
}
while (! gtk_text_iter_equal (&iter, end));
gtk_text_buffer_end_user_action (GTK_TEXT_BUFFER (buffer));
}
GtkTextTag *
gimp_text_buffer_get_iter_baseline (GimpTextBuffer *buffer,
const GtkTextIter *iter,
gint *baseline)
{
GList *list;
for (list = buffer->baseline_tags; list; list = g_list_next (list))
{
GtkTextTag *tag = list->data;
if (gtk_text_iter_has_tag (iter, tag))
{
if (baseline)
*baseline = gimp_text_tag_get_baseline (tag);
return tag;
}
}
if (baseline)
*baseline = 0;
return NULL;
}
static GtkTextTag *
gimp_text_buffer_get_baseline_tag (GimpTextBuffer *buffer,
gint baseline)
{
GList *list;
GtkTextTag *tag;
gchar name[32];
for (list = buffer->baseline_tags; list; list = g_list_next (list))
{
tag = list->data;
if (baseline == gimp_text_tag_get_baseline (tag))
return tag;
}
g_snprintf (name, sizeof (name), "baseline-%d", baseline);
tag = gtk_text_buffer_create_tag (GTK_TEXT_BUFFER (buffer),
name,
GIMP_TEXT_PROP_NAME_BASELINE, baseline,
NULL);
buffer->baseline_tags = g_list_prepend (buffer->baseline_tags, tag);
return tag;
}
void
gimp_text_buffer_set_baseline (GimpTextBuffer *buffer,
const GtkTextIter *start,
const GtkTextIter *end,
gint baseline)
{
GList *list;
g_return_if_fail (GIMP_IS_TEXT_BUFFER (buffer));
g_return_if_fail (start != NULL);
g_return_if_fail (end != NULL);
if (gtk_text_iter_equal (start, end))
return;
gtk_text_buffer_begin_user_action (GTK_TEXT_BUFFER (buffer));
for (list = buffer->baseline_tags; list; list = g_list_next (list))
{
gtk_text_buffer_remove_tag (GTK_TEXT_BUFFER (buffer), list->data,
start, end);
}
if (baseline != 0)
{
GtkTextTag *tag;
tag = gimp_text_buffer_get_baseline_tag (buffer, baseline);
gtk_text_buffer_apply_tag (GTK_TEXT_BUFFER (buffer), tag,
start, end);
}
gtk_text_buffer_end_user_action (GTK_TEXT_BUFFER (buffer));
}
void
gimp_text_buffer_change_baseline (GimpTextBuffer *buffer,
const GtkTextIter *start,
const GtkTextIter *end,
gint count)
{
GtkTextIter iter;
GtkTextIter span_start;
GtkTextIter span_end;
GtkTextTag *span_tag;
gint span_baseline;
g_return_if_fail (GIMP_IS_TEXT_BUFFER (buffer));
g_return_if_fail (start != NULL);
g_return_if_fail (end != NULL);
if (gtk_text_iter_equal (start, end))
return;
iter = *start;
span_start = *start;
span_tag = gimp_text_buffer_get_iter_baseline (buffer, &iter,
&span_baseline);
gtk_text_buffer_begin_user_action (GTK_TEXT_BUFFER (buffer));
do
{
GtkTextTag *iter_tag;
gint iter_baseline;
gtk_text_iter_forward_char (&iter);
iter_tag = gimp_text_buffer_get_iter_baseline (buffer, &iter,
&iter_baseline);
span_end = iter;
if (iter_baseline != span_baseline ||
gtk_text_iter_compare (&iter, end) >= 0)
{
if (span_baseline != 0)
{
gtk_text_buffer_remove_tag (GTK_TEXT_BUFFER (buffer), span_tag,
&span_start, &span_end);
}
if (span_baseline + count != 0)
{
span_tag = gimp_text_buffer_get_baseline_tag (buffer,
span_baseline + count);
gtk_text_buffer_apply_tag (GTK_TEXT_BUFFER (buffer), span_tag,
&span_start, &span_end);
}
span_start = iter;
span_baseline = iter_baseline;
span_tag = iter_tag;
}
/* We might have moved too far */
if (gtk_text_iter_compare (&iter, end) > 0)
iter = *end;
}
while (! gtk_text_iter_equal (&iter, end));
gtk_text_buffer_end_user_action (GTK_TEXT_BUFFER (buffer));
}
GtkTextTag *
gimp_text_buffer_get_iter_kerning (GimpTextBuffer *buffer,
const GtkTextIter *iter,
gint *kerning)
{
GList *list;
for (list = buffer->kerning_tags; list; list = g_list_next (list))
{
GtkTextTag *tag = list->data;
if (gtk_text_iter_has_tag (iter, tag))
{
if (kerning)
*kerning = gimp_text_tag_get_kerning (tag);
return tag;
}
}
if (kerning)
*kerning = 0;
return NULL;
}
static GtkTextTag *
gimp_text_buffer_get_kerning_tag (GimpTextBuffer *buffer,
gint kerning)
{
GList *list;
GtkTextTag *tag;
gchar name[32];
for (list = buffer->kerning_tags; list; list = g_list_next (list))
{
tag = list->data;
if (kerning == gimp_text_tag_get_kerning (tag))
return tag;
}
g_snprintf (name, sizeof (name), "kerning-%d", kerning);
tag = gtk_text_buffer_create_tag (GTK_TEXT_BUFFER (buffer),
name,
GIMP_TEXT_PROP_NAME_KERNING, kerning,
NULL);
buffer->kerning_tags = g_list_prepend (buffer->kerning_tags, tag);
return tag;
}
void
gimp_text_buffer_set_kerning (GimpTextBuffer *buffer,
const GtkTextIter *start,
const GtkTextIter *end,
gint kerning)
{
GList *list;
g_return_if_fail (GIMP_IS_TEXT_BUFFER (buffer));
g_return_if_fail (start != NULL);
g_return_if_fail (end != NULL);
if (gtk_text_iter_equal (start, end))
return;
gtk_text_buffer_begin_user_action (GTK_TEXT_BUFFER (buffer));
for (list = buffer->kerning_tags; list; list = g_list_next (list))
{
gtk_text_buffer_remove_tag (GTK_TEXT_BUFFER (buffer), list->data,
start, end);
}
if (kerning != 0)
{
GtkTextTag *tag;
tag = gimp_text_buffer_get_kerning_tag (buffer, kerning);
gtk_text_buffer_apply_tag (GTK_TEXT_BUFFER (buffer), tag,
start, end);
}
gtk_text_buffer_end_user_action (GTK_TEXT_BUFFER (buffer));
}
void
gimp_text_buffer_change_kerning (GimpTextBuffer *buffer,
const GtkTextIter *start,
const GtkTextIter *end,
gint count)
{
GtkTextIter iter;
GtkTextIter span_start;
GtkTextIter span_end;
GtkTextTag *span_tag;
gint span_kerning;
g_return_if_fail (GIMP_IS_TEXT_BUFFER (buffer));
g_return_if_fail (start != NULL);
g_return_if_fail (end != NULL);
if (gtk_text_iter_equal (start, end))
return;
iter = *start;
span_start = *start;
span_tag = gimp_text_buffer_get_iter_kerning (buffer, &iter,
&span_kerning);
gtk_text_buffer_begin_user_action (GTK_TEXT_BUFFER (buffer));
do
{
GtkTextTag *iter_tag;
gint iter_kerning;
gtk_text_iter_forward_char (&iter);
iter_tag = gimp_text_buffer_get_iter_kerning (buffer, &iter,
&iter_kerning);
span_end = iter;
if (iter_kerning != span_kerning ||
gtk_text_iter_compare (&iter, end) >= 0)
{
if (span_kerning != 0)
{
gtk_text_buffer_remove_tag (GTK_TEXT_BUFFER (buffer), span_tag,
&span_start, &span_end);
}
if (span_kerning + count != 0)
{
span_tag = gimp_text_buffer_get_kerning_tag (buffer,
span_kerning + count);
gtk_text_buffer_apply_tag (GTK_TEXT_BUFFER (buffer), span_tag,
&span_start, &span_end);
}
span_start = iter;
span_kerning = iter_kerning;
span_tag = iter_tag;
}
/* We might have moved too far */
if (gtk_text_iter_compare (&iter, end) > 0)
iter = *end;
}
while (! gtk_text_iter_equal (&iter, end));
gtk_text_buffer_end_user_action (GTK_TEXT_BUFFER (buffer));
}
GtkTextTag *
gimp_text_buffer_get_iter_font (GimpTextBuffer *buffer,
const GtkTextIter *iter,
gchar **font)
{
GList *list;
for (list = buffer->font_tags; list; list = g_list_next (list))
{
GtkTextTag *tag = list->data;
if (gtk_text_iter_has_tag (iter, tag))
{
if (font)
*font = gimp_text_tag_get_font (tag);
return tag;
}
}
if (font)
*font = NULL;
return NULL;
}
GtkTextTag *
gimp_text_buffer_get_font_tag (GimpTextBuffer *buffer,
const gchar *font)
{
GList *list;
GtkTextTag *tag;
gchar name[256];
PangoFontDescription *pfd = pango_font_description_from_string (font);
char *description = pango_font_description_to_string (pfd);
pango_font_description_free (pfd);
for (list = buffer->font_tags; list; list = g_list_next (list))
{
gchar *tag_font;
tag = list->data;
tag_font = gimp_text_tag_get_font (tag);
if (! strcmp (description, tag_font))
{
g_free (tag_font);
g_free (description);
return tag;
}
g_free (tag_font);
}
g_snprintf (name, sizeof (name), "font-%s", description);
tag = gtk_text_buffer_create_tag (GTK_TEXT_BUFFER (buffer),
name,
"font", description,
NULL);
g_free (description);
buffer->font_tags = g_list_prepend (buffer->font_tags, tag);
return tag;
}
void
gimp_text_buffer_set_font (GimpTextBuffer *buffer,
const GtkTextIter *start,
const GtkTextIter *end,
const gchar *font)
{
GList *list;
g_return_if_fail (GIMP_IS_TEXT_BUFFER (buffer));
g_return_if_fail (start != NULL);
g_return_if_fail (end != NULL);
if (gtk_text_iter_equal (start, end))
return;
gtk_text_buffer_begin_user_action (GTK_TEXT_BUFFER (buffer));
for (list = buffer->font_tags; list; list = g_list_next (list))
{
gtk_text_buffer_remove_tag (GTK_TEXT_BUFFER (buffer), list->data,
start, end);
}
if (font)
{
GtkTextTag *tag = gimp_text_buffer_get_font_tag (buffer, font);
gtk_text_buffer_apply_tag (GTK_TEXT_BUFFER (buffer), tag,
start, end);
}
gtk_text_buffer_end_user_action (GTK_TEXT_BUFFER (buffer));
}
GtkTextTag *
gimp_text_buffer_get_iter_color (GimpTextBuffer *buffer,
const GtkTextIter *iter,
GimpRGB *color)
{
GList *list;
for (list = buffer->color_tags; list; list = g_list_next (list))
{
GtkTextTag *tag = list->data;
if (gtk_text_iter_has_tag (iter, tag))
{
if (color)
gimp_text_tag_get_color (tag, color);
return tag;
}
}
return NULL;
}
GtkTextTag *
gimp_text_buffer_get_color_tag (GimpTextBuffer *buffer,
const GimpRGB *color)
{
GList *list;
GtkTextTag *tag;
gchar name[256];
GdkColor gdk_color;
guchar r, g, b;
gimp_rgb_get_uchar (color, &r, &g, &b);
for (list = buffer->color_tags; list; list = g_list_next (list))
{
GimpRGB tag_color;
guchar tag_r, tag_g, tag_b;
tag = list->data;
gimp_text_tag_get_color (tag, &tag_color);
gimp_rgb_get_uchar (&tag_color, &tag_r, &tag_g, &tag_b);
/* Do not compare the alpha channel, since it's unused */
if (tag_r == r &&
tag_g == g &&
tag_b == b)
{
return tag;
}
}
g_snprintf (name, sizeof (name), "color-#%02x%02x%02x",
r, g, b);
gimp_rgb_get_gdk_color (color, &gdk_color);
tag = gtk_text_buffer_create_tag (GTK_TEXT_BUFFER (buffer),
name,
"foreground-gdk", &gdk_color,
"foreground-set", TRUE,
NULL);
buffer->color_tags = g_list_prepend (buffer->color_tags, tag);
return tag;
}
void
gimp_text_buffer_set_color (GimpTextBuffer *buffer,
const GtkTextIter *start,
const GtkTextIter *end,
const GimpRGB *color)
{
GList *list;
g_return_if_fail (GIMP_IS_TEXT_BUFFER (buffer));
g_return_if_fail (start != NULL);
g_return_if_fail (end != NULL);
if (gtk_text_iter_equal (start, end))
return;
gtk_text_buffer_begin_user_action (GTK_TEXT_BUFFER (buffer));
for (list = buffer->color_tags; list; list = g_list_next (list))
{
gtk_text_buffer_remove_tag (GTK_TEXT_BUFFER (buffer), list->data,
start, end);
}
if (color)
{
GtkTextTag *tag = gimp_text_buffer_get_color_tag (buffer, color);
gtk_text_buffer_apply_tag (GTK_TEXT_BUFFER (buffer), tag,
start, end);
}
gtk_text_buffer_end_user_action (GTK_TEXT_BUFFER (buffer));
}
/* Pango markup attribute names */
#define GIMP_TEXT_ATTR_NAME_SIZE "size"
#define GIMP_TEXT_ATTR_NAME_BASELINE "rise"
#define GIMP_TEXT_ATTR_NAME_KERNING "letter_spacing"
#define GIMP_TEXT_ATTR_NAME_FONT "font"
#define GIMP_TEXT_ATTR_NAME_COLOR "foreground"
const gchar *
gimp_text_buffer_tag_to_name (GimpTextBuffer *buffer,
GtkTextTag *tag,
const gchar **attribute,
gchar **value)
{
g_return_val_if_fail (GIMP_IS_TEXT_BUFFER (buffer), NULL);
g_return_val_if_fail (GTK_IS_TEXT_TAG (tag), NULL);
if (attribute)
*attribute = NULL;
if (value)
*value = NULL;
if (tag == buffer->bold_tag)
{
return "b";
}
else if (tag == buffer->italic_tag)
{
return "i";
}
else if (tag == buffer->underline_tag)
{
return "u";
}
else if (tag == buffer->strikethrough_tag)
{
return "s";
}
else if (g_list_find (buffer->size_tags, tag))
{
if (attribute)
*attribute = GIMP_TEXT_ATTR_NAME_SIZE;
if (value)
*value = g_strdup_printf ("%d", gimp_text_tag_get_size (tag));
return "span";
}
else if (g_list_find (buffer->baseline_tags, tag))
{
if (attribute)
*attribute = GIMP_TEXT_ATTR_NAME_BASELINE;
if (value)
*value = g_strdup_printf ("%d", gimp_text_tag_get_baseline (tag));
return "span";
}
else if (g_list_find (buffer->kerning_tags, tag))
{
if (attribute)
*attribute = GIMP_TEXT_ATTR_NAME_KERNING;
if (value)
*value = g_strdup_printf ("%d", gimp_text_tag_get_kerning (tag));
return "span";
}
else if (g_list_find (buffer->font_tags, tag))
{
if (attribute)
*attribute = GIMP_TEXT_ATTR_NAME_FONT;
if (value)
*value = gimp_text_tag_get_font (tag);
return "span";
}
else if (g_list_find (buffer->color_tags, tag))
{
if (attribute)
*attribute = GIMP_TEXT_ATTR_NAME_COLOR;
if (value)
{
GimpRGB color;
guchar r, g, b;
gimp_text_tag_get_color (tag, &color);
gimp_rgb_get_uchar (&color, &r, &g, &b);
*value = g_strdup_printf ("#%02x%02x%02x", r, g, b);
}
return "span";
}
return NULL;
}
GtkTextTag *
gimp_text_buffer_name_to_tag (GimpTextBuffer *buffer,
const gchar *name,
const gchar *attribute,
const gchar *value)
{
g_return_val_if_fail (GIMP_IS_TEXT_BUFFER (buffer), NULL);
g_return_val_if_fail (name != NULL, NULL);
if (! strcmp (name, "b"))
{
return buffer->bold_tag;
}
else if (! strcmp (name, "i"))
{
return buffer->italic_tag;
}
else if (! strcmp (name, "u"))
{
return buffer->underline_tag;
}
else if (! strcmp (name, "s"))
{
return buffer->strikethrough_tag;
}
else if (! strcmp (name, "span") &&
attribute != NULL &&
value != NULL)
{
if (! strcmp (attribute, GIMP_TEXT_ATTR_NAME_SIZE))
{
return gimp_text_buffer_get_size_tag (buffer, atoi (value));
}
else if (! strcmp (attribute, GIMP_TEXT_ATTR_NAME_BASELINE))
{
return gimp_text_buffer_get_baseline_tag (buffer, atoi (value));
}
else if (! strcmp (attribute, GIMP_TEXT_ATTR_NAME_KERNING))
{
return gimp_text_buffer_get_kerning_tag (buffer, atoi (value));
}
else if (! strcmp (attribute, GIMP_TEXT_ATTR_NAME_FONT))
{
return gimp_text_buffer_get_font_tag (buffer, value);
}
else if (! strcmp (attribute, GIMP_TEXT_ATTR_NAME_COLOR))
{
GimpRGB color;
guint r, g, b;
sscanf (value, "#%02x%02x%02x", &r, &g, &b);
gimp_rgb_set_uchar (&color, r, g, b);
return gimp_text_buffer_get_color_tag (buffer, &color);
}
}
return NULL;
}
void
gimp_text_buffer_set_insert_tags (GimpTextBuffer *buffer,
GList *insert_tags,
GList *remove_tags)
{
g_return_if_fail (GIMP_IS_TEXT_BUFFER (buffer));
buffer->insert_tags_set = TRUE;
g_list_free (buffer->insert_tags);
g_list_free (buffer->remove_tags);
buffer->insert_tags = insert_tags;
buffer->remove_tags = remove_tags;
}
void
gimp_text_buffer_clear_insert_tags (GimpTextBuffer *buffer)
{
g_return_if_fail (GIMP_IS_TEXT_BUFFER (buffer));
buffer->insert_tags_set = FALSE;
g_list_free (buffer->insert_tags);
g_list_free (buffer->remove_tags);
buffer->insert_tags = NULL;
buffer->remove_tags = NULL;
}
void
gimp_text_buffer_insert (GimpTextBuffer *buffer,
const gchar *text)
{
GtkTextIter iter, start;
gint start_offset;
gboolean insert_tags_set;
GList *insert_tags;
GList *remove_tags;
GSList *tags_off = NULL;
g_return_if_fail (GIMP_IS_TEXT_BUFFER (buffer));
gtk_text_buffer_get_iter_at_mark (GTK_TEXT_BUFFER (buffer), &iter,
gtk_text_buffer_get_insert (GTK_TEXT_BUFFER (buffer)));
start_offset = gtk_text_iter_get_offset (&iter);
insert_tags_set = buffer->insert_tags_set;
insert_tags = buffer->insert_tags;
remove_tags = buffer->remove_tags;
buffer->insert_tags_set = FALSE;
buffer->insert_tags = NULL;
buffer->remove_tags = NULL;
tags_off = gtk_text_iter_get_toggled_tags (&iter, FALSE);
gtk_text_buffer_begin_user_action (GTK_TEXT_BUFFER (buffer));
gtk_text_buffer_insert (GTK_TEXT_BUFFER (buffer), &iter, text, -1);
gtk_text_buffer_get_iter_at_offset (GTK_TEXT_BUFFER (buffer), &start,
start_offset);
if (insert_tags_set)
{
GList *list;
for (list = remove_tags; list; list = g_list_next (list))
{
GtkTextTag *tag = list->data;
gtk_text_buffer_remove_tag (GTK_TEXT_BUFFER (buffer), tag,
&start, &iter);
}
for (list = insert_tags; list; list = g_list_next (list))
{
GtkTextTag *tag = list->data;
gtk_text_buffer_apply_tag (GTK_TEXT_BUFFER (buffer), tag,
&start, &iter);
}
}
if (tags_off)
{
GSList *slist;
for (slist = tags_off; slist; slist = g_slist_next (slist))
{
GtkTextTag *tag = slist->data;
if (! g_list_find (remove_tags, tag) &&
! g_list_find (buffer->kerning_tags, tag))
{
gtk_text_buffer_apply_tag (GTK_TEXT_BUFFER (buffer), tag,
&start, &iter);
}
}
g_slist_free (tags_off);
}
g_list_free (remove_tags);
g_list_free (insert_tags);
gtk_text_buffer_end_user_action (GTK_TEXT_BUFFER (buffer));
}
gint
gimp_text_buffer_get_iter_index (GimpTextBuffer *buffer,
GtkTextIter *iter,
gboolean layout_index)
{
GtkTextIter start;
gchar *string;
gint index;
g_return_val_if_fail (GIMP_IS_TEXT_BUFFER (buffer), 0);
gtk_text_buffer_get_start_iter (GTK_TEXT_BUFFER (buffer), &start);
string = gtk_text_buffer_get_text (GTK_TEXT_BUFFER (buffer),
&start, iter, TRUE);
index = strlen (string);
g_free (string);
if (layout_index)
{
do
{
GSList *tags = gtk_text_iter_get_tags (&start);
GSList *list;
for (list = tags; list; list = g_slist_next (list))
{
GtkTextTag *tag = list->data;
if (g_list_find (buffer->kerning_tags, tag))
{
index += WORD_JOINER_LENGTH;
break;
}
}
g_slist_free (tags);
gtk_text_iter_forward_char (&start);
/* We might have moved too far */
if (gtk_text_iter_compare (&start, iter) > 0)
start = *iter;
}
while (! gtk_text_iter_equal (&start, iter));
}
return index;
}
void
gimp_text_buffer_get_iter_at_index (GimpTextBuffer *buffer,
GtkTextIter *iter,
gint index,
gboolean layout_index)
{
GtkTextIter start;
GtkTextIter end;
gchar *string;
g_return_if_fail (GIMP_IS_TEXT_BUFFER (buffer));
gtk_text_buffer_get_bounds (GTK_TEXT_BUFFER (buffer), &start, &end);
string = gtk_text_buffer_get_text (GTK_TEXT_BUFFER (buffer),
&start, &end, TRUE);
if (layout_index)
{
gchar *my_string = string;
gint my_index = 0;
gchar *tmp;
do
{
GSList *tags = gtk_text_iter_get_tags (&start);
GSList *list;
tmp = g_utf8_next_char (my_string);
my_index += (tmp - my_string);
my_string = tmp;
for (list = tags; list; list = g_slist_next (list))
{
GtkTextTag *tag = list->data;
if (g_list_find (buffer->kerning_tags, tag))
{
index = MAX (0, index - WORD_JOINER_LENGTH);
break;
}
}
g_slist_free (tags);
gtk_text_iter_forward_char (&start);
/* We might have moved too far */
if (gtk_text_iter_compare (&start, &end) > 0)
start = end;
}
while (my_index < index &&
! gtk_text_iter_equal (&start, &end));
}
string[index] = '\0';
gtk_text_buffer_get_iter_at_offset (GTK_TEXT_BUFFER (buffer), iter,
g_utf8_strlen (string, -1));
g_free (string);
}
gboolean
gimp_text_buffer_load (GimpTextBuffer *buffer,
GFile *file,
GError **error)
{
GInputStream *input;
gchar buf[2048];
gint to_read;
gsize bytes_read;
gsize total_read = 0;
gint remaining = 0;
GtkTextIter iter;
GError *my_error = NULL;
g_return_val_if_fail (GIMP_IS_TEXT_BUFFER (buffer), FALSE);
g_return_val_if_fail (G_IS_FILE (file), FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
input = G_INPUT_STREAM (g_file_read (file, NULL, &my_error));
if (! input)
{
g_set_error (error, my_error->domain, my_error->code,
_("Could not open '%s' for reading: %s"),
gimp_file_get_utf8_name (file), my_error->message);
g_clear_error (&my_error);
return FALSE;
}
gtk_text_buffer_begin_user_action (GTK_TEXT_BUFFER (buffer));
gimp_text_buffer_set_text (buffer, NULL);
gtk_text_buffer_get_end_iter (GTK_TEXT_BUFFER (buffer), &iter);
do
{
gboolean success;
const char *leftover;
to_read = sizeof (buf) - remaining - 1;
success = g_input_stream_read_all (input, buf + remaining, to_read,
&bytes_read, NULL, &my_error);
total_read += bytes_read;
buf[bytes_read + remaining] = '\0';
g_utf8_validate (buf, bytes_read + remaining, &leftover);
gtk_text_buffer_insert (GTK_TEXT_BUFFER (buffer), &iter,
buf, leftover - buf);
gtk_text_buffer_get_end_iter (GTK_TEXT_BUFFER (buffer), &iter);
remaining = (buf + remaining + bytes_read) - leftover;
memmove (buf, leftover, remaining);
if (! success)
{
if (total_read > 0)
{
g_message (_("Input file '%s' appears truncated: %s"),
gimp_file_get_utf8_name (file),
my_error->message);
g_clear_error (&my_error);
break;
}
gtk_text_buffer_end_user_action (GTK_TEXT_BUFFER (buffer));
g_object_unref (input);
g_propagate_error (error, my_error);
return FALSE;
}
}
while (remaining <= 6 && bytes_read == to_read);
if (remaining)
g_message (_("Invalid UTF-8 data in file '%s'."),
gimp_file_get_utf8_name (file));
gtk_text_buffer_end_user_action (GTK_TEXT_BUFFER (buffer));
g_object_unref (input);
return TRUE;
}
gboolean
gimp_text_buffer_save (GimpTextBuffer *buffer,
GFile *file,
gboolean selection_only,
GError **error)
{
GOutputStream *output;
GtkTextIter start_iter;
GtkTextIter end_iter;
gchar *text_contents;
GError *my_error = NULL;
g_return_val_if_fail (GIMP_IS_TEXT_BUFFER (buffer), FALSE);
g_return_val_if_fail (G_IS_FILE (file), FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
output = G_OUTPUT_STREAM (g_file_replace (file,
NULL, FALSE, G_FILE_CREATE_NONE,
NULL, error));
if (! output)
return FALSE;
if (selection_only)
gtk_text_buffer_get_selection_bounds (GTK_TEXT_BUFFER (buffer),
&start_iter, &end_iter);
else
gtk_text_buffer_get_bounds (GTK_TEXT_BUFFER (buffer),
&start_iter, &end_iter);
text_contents = gtk_text_buffer_get_text (GTK_TEXT_BUFFER (buffer),
&start_iter, &end_iter, TRUE);
if (text_contents)
{
gint text_length = strlen (text_contents);
if (! g_output_stream_write_all (output, text_contents, text_length,
NULL, NULL, &my_error))
{
g_set_error (error, my_error->domain, my_error->code,
_("Writing palette file '%s' failed: %s"),
gimp_file_get_utf8_name (file), my_error->message);
g_clear_error (&my_error);
g_free (text_contents);
g_object_unref (output);
return FALSE;
}
g_free (text_contents);
}
g_object_unref (output);
return TRUE;
}
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