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Added <attributes> / <attribute> custom tags to parse pango attributes

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* gtk/gtklabel.c: Added <attributes> / <attribute>
	custom tags to parse pango attributes into labels.

	* tests/buildertest.c: Added tests for GtkLabel custom
	tag parsing.


svn path=/trunk/; revision=19995
This commit is contained in:
Tristan Van Berkom 2008-04-11 16:56:26 +00:00
parent a011f8c06f
commit 58f712f7ed
4 changed files with 468 additions and 1 deletions
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8
ChangeLog
View File

@ -1,3 +1,11 @@
2008-04-11 Tristan Van Berkom <tvb@gnome.org>
* gtk/gtklabel.c: Added <attributes> / <attribute>
custom tags to parse pango attributes into labels.
* tests/buildertest.c: Added tests for GtkLabel custom
tag parsing.
2008-04-10 Carlos Garnacho <carlos@imendio.com>
* gtk/gtknotebook.c (hide_drag_window): Do not call

1
gtk/gtkbuildable.h
View File

@ -33,6 +33,7 @@ G_BEGIN_DECLS
#define GTK_IS_BUILDABLE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_BUILDABLE))
#define GTK_BUILDABLE_GET_IFACE(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), GTK_TYPE_BUILDABLE, GtkBuildableIface))
typedef struct _GtkBuildable GtkBuildable; /* Dummy typedef */
typedef struct _GtkBuildableIface GtkBuildableIface;

347
gtk/gtklabel.c
View File

@ -43,6 +43,7 @@
#include "gtknotebook.h"
#include "gtkstock.h"
#include "gtkbindings.h"
#include "gtkbuildable.h"
#include "gtkprivate.h"
#include "gtkalias.h"
@ -179,6 +180,20 @@ static void gtk_label_drag_data_get (GtkWidget *widget,
guint info,
guint time);
static void gtk_label_buildable_interface_init (GtkBuildableIface *iface);
static gboolean gtk_label_buildable_custom_tag_start (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
GMarkupParser *parser,
gpointer *data);
static void gtk_label_buildable_custom_finished (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
gpointer user_data);
/* For selectable lables: */
static void gtk_label_move_cursor (GtkLabel *label,
@ -197,7 +212,11 @@ static gint gtk_label_move_backward_word (GtkLabel *label,
static GQuark quark_angle = 0;
G_DEFINE_TYPE (GtkLabel, gtk_label, GTK_TYPE_MISC)
static GtkBuildableIface *buildable_parent_iface = NULL;
G_DEFINE_TYPE_WITH_CODE (GtkLabel, gtk_label, GTK_TYPE_MISC,
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
gtk_label_buildable_interface_init));
static void
add_move_binding (GtkBindingSet *binding_set,
@ -811,6 +830,332 @@ gtk_label_init (GtkLabel *label)
gtk_label_set_text (label, "");
}
static void
gtk_label_buildable_interface_init (GtkBuildableIface *iface)
{
buildable_parent_iface = g_type_interface_peek_parent (iface);
iface->custom_tag_start = gtk_label_buildable_custom_tag_start;
iface->custom_finished = gtk_label_buildable_custom_finished;
}
typedef struct {
GtkBuilder *builder;
GObject *object;
PangoAttrList *attrs;
} PangoParserData;
PangoAttribute *
attribute_from_text (GtkBuilder *builder,
const gchar *name,
const gchar *value,
GError **error)
{
PangoAttribute *attribute = NULL;
PangoAttrType type;
PangoLanguage *language;
PangoFontDescription *font_desc;
GdkColor *color;
GValue val = { 0, };
if (!gtk_builder_value_from_string_type (builder, PANGO_TYPE_ATTR_TYPE, name, &val, error))
return NULL;
type = g_value_get_enum (&val);
g_value_unset (&val);
switch (type)
{
/* PangoAttrLanguage */
case PANGO_ATTR_LANGUAGE:
if ((language = pango_language_from_string (value)))
{
attribute = pango_attr_language_new (language);
g_value_init (&val, G_TYPE_INT);
}
break;
/* PangoAttrInt */
case PANGO_ATTR_STYLE:
if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_STYLE, value, &val, error))
attribute = pango_attr_style_new (g_value_get_enum (&val));
break;
case PANGO_ATTR_WEIGHT:
if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_WEIGHT, value, &val, error))
attribute = pango_attr_weight_new (g_value_get_enum (&val));
break;
case PANGO_ATTR_VARIANT:
if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_VARIANT, value, &val, error))
attribute = pango_attr_variant_new (g_value_get_enum (&val));
break;
case PANGO_ATTR_STRETCH:
if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_STRETCH, value, &val, error))
attribute = pango_attr_stretch_new (g_value_get_enum (&val));
break;
case PANGO_ATTR_UNDERLINE:
if (gtk_builder_value_from_string_type (builder, G_TYPE_BOOLEAN, value, &val, error))
attribute = pango_attr_underline_new (g_value_get_boolean (&val));
break;
case PANGO_ATTR_STRIKETHROUGH:
if (gtk_builder_value_from_string_type (builder, G_TYPE_BOOLEAN, value, &val, error))
attribute = pango_attr_strikethrough_new (g_value_get_boolean (&val));
break;
case PANGO_ATTR_GRAVITY:
if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_GRAVITY, value, &val, error))
attribute = pango_attr_gravity_new (g_value_get_enum (&val));
break;
case PANGO_ATTR_GRAVITY_HINT:
if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_GRAVITY_HINT,
value, &val, error))
attribute = pango_attr_gravity_hint_new (g_value_get_enum (&val));
break;
/* PangoAttrString */
case PANGO_ATTR_FAMILY:
attribute = pango_attr_family_new (value);
g_value_init (&val, G_TYPE_INT);
break;
/* PangoAttrSize */
case PANGO_ATTR_SIZE:
if (gtk_builder_value_from_string_type (builder, G_TYPE_INT,
value, &val, error))
attribute = pango_attr_size_new (g_value_get_int (&val));
break;
case PANGO_ATTR_ABSOLUTE_SIZE:
if (gtk_builder_value_from_string_type (builder, G_TYPE_INT,
value, &val, error))
attribute = pango_attr_size_new_absolute (g_value_get_int (&val));
break;
/* PangoAttrFontDesc */
case PANGO_ATTR_FONT_DESC:
if ((font_desc = pango_font_description_from_string (value)))
{
attribute = pango_attr_font_desc_new (font_desc);
pango_font_description_free (font_desc);
g_value_init (&val, G_TYPE_INT);
}
break;
/* PangoAttrColor */
case PANGO_ATTR_FOREGROUND:
if (gtk_builder_value_from_string_type (builder, GDK_TYPE_COLOR,
value, &val, error))
{
color = g_value_get_boxed (&val);
attribute = pango_attr_foreground_new (color->red, color->green, color->blue);
}
break;
case PANGO_ATTR_BACKGROUND:
if (gtk_builder_value_from_string_type (builder, GDK_TYPE_COLOR,
value, &val, error))
{
color = g_value_get_boxed (&val);
attribute = pango_attr_background_new (color->red, color->green, color->blue);
}
break;
case PANGO_ATTR_UNDERLINE_COLOR:
if (gtk_builder_value_from_string_type (builder, GDK_TYPE_COLOR,
value, &val, error))
{
color = g_value_get_boxed (&val);
attribute = pango_attr_underline_color_new (color->red, color->green, color->blue);
}
break;
case PANGO_ATTR_STRIKETHROUGH_COLOR:
if (gtk_builder_value_from_string_type (builder, GDK_TYPE_COLOR,
value, &val, error))
{
color = g_value_get_boxed (&val);
attribute = pango_attr_strikethrough_color_new (color->red, color->green, color->blue);
}
break;
/* PangoAttrShape */
case PANGO_ATTR_SHAPE:
/* Unsupported for now */
break;
/* PangoAttrFloat */
case PANGO_ATTR_SCALE:
if (gtk_builder_value_from_string_type (builder, G_TYPE_DOUBLE,
value, &val, error))
attribute = pango_attr_scale_new (g_value_get_double (&val));
break;
case PANGO_ATTR_INVALID:
case PANGO_ATTR_LETTER_SPACING:
case PANGO_ATTR_RISE:
case PANGO_ATTR_FALLBACK:
default:
break;
}
g_value_unset (&val);
return attribute;
}
static void
pango_start_element (GMarkupParseContext *context,
const gchar *element_name,
const gchar **names,
const gchar **values,
gpointer user_data,
GError **error)
{
PangoParserData *data = (PangoParserData*)user_data;
GValue val = { 0, };
guint i;
gint line_number, char_number;
if (strcmp (element_name, "attribute") == 0)
{
PangoAttribute *attr = NULL;
const gchar *name = NULL;
const gchar *value = NULL;
const gchar *start = NULL;
const gchar *end = NULL;
guint start_val = 0;
guint end_val = G_MAXUINT;
for (i = 0; names[i]; i++)
{
if (strcmp (names[i], "name") == 0)
name = values[i];
else if (strcmp (names[i], "value") == 0)
value = values[i];
else if (strcmp (names[i], "start") == 0)
start = values[i];
else if (strcmp (names[i], "end") == 0)
end = values[i];
else
{
g_markup_parse_context_get_position (context,
&line_number,
&char_number);
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_INVALID_ATTRIBUTE,
"%s:%d:%d '%s' is not a valid attribute of <%s>",
"<input>",
line_number, char_number, names[i], "attribute");
return;
}
}
if (!name || !value)
{
g_markup_parse_context_get_position (context,
&line_number,
&char_number);
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_MISSING_ATTRIBUTE,
"%s:%d:%d <%s> requires attribute \"%s\"",
"<input>",
line_number, char_number, "attribute",
name ? "value" : "name");
return;
}
if (start)
{
if (!gtk_builder_value_from_string_type (data->builder, G_TYPE_UINT,
start, &val, error))
return;
start_val = g_value_get_uint (&val);
g_value_unset (&val);
}
if (end)
{
if (!gtk_builder_value_from_string_type (data->builder, G_TYPE_UINT,
end, &val, error))
return;
end_val = g_value_get_uint (&val);
g_value_unset (&val);
}
attr = attribute_from_text (data->builder, name, value, error);
attr->start_index = start_val;
attr->end_index = end_val;
if (attr)
{
if (!data->attrs)
data->attrs = pango_attr_list_new ();
pango_attr_list_insert (data->attrs, attr);
}
}
else if (strcmp (element_name, "attributes") == 0)
;
else
g_warning ("Unsupported tag for GtkLabel: %s\n", element_name);
}
static const GMarkupParser pango_parser =
{
pango_start_element,
};
static gboolean
gtk_label_buildable_custom_tag_start (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
GMarkupParser *parser,
gpointer *data)
{
if (buildable_parent_iface->custom_tag_start (buildable, builder, child,
tagname, parser, data))
return TRUE;
if (strcmp (tagname, "attributes") == 0)
{
PangoParserData *parser_data;
parser_data = g_slice_new0 (PangoParserData);
parser_data->builder = g_object_ref (builder);
parser_data->object = g_object_ref (buildable);
*parser = pango_parser;
*data = parser_data;
return TRUE;
}
return FALSE;
}
static void
gtk_label_buildable_custom_finished (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
gpointer user_data)
{
PangoParserData *data;
buildable_parent_iface->custom_finished (buildable, builder, child,
tagname, user_data);
if (strcmp (tagname, "attributes") == 0)
{
data = (PangoParserData*)user_data;
if (data->attrs)
{
gtk_label_set_attributes (GTK_LABEL (buildable), data->attrs);
pango_attr_list_unref (data->attrs);
}
g_object_unref (data->object);
g_object_unref (data->builder);
g_slice_free (PangoParserData, data);
}
}
/**
* gtk_label_new:
* @str: The text of the label

113
tests/buildertest.c
View File

@ -1914,6 +1914,118 @@ test_icon_factory (void)
}
typedef struct {
gboolean weight;
gboolean foreground;
gboolean underline;
gboolean size;
gboolean font_desc;
gboolean language;
} FoundAttrs;
static gboolean
filter_pango_attrs (PangoAttribute *attr,
gpointer data)
{
FoundAttrs *found = (FoundAttrs *)data;
if (attr->klass->type == PANGO_ATTR_WEIGHT)
found->weight = TRUE;
else if (attr->klass->type == PANGO_ATTR_FOREGROUND)
found->foreground = TRUE;
else if (attr->klass->type == PANGO_ATTR_UNDERLINE)
found->underline = TRUE;
/* Make sure optional start/end properties are working */
else if (attr->klass->type == PANGO_ATTR_SIZE &&
attr->start_index == 5 &&
attr->end_index == 10)
found->size = TRUE;
else if (attr->klass->type == PANGO_ATTR_FONT_DESC)
found->font_desc = TRUE;
else if (attr->klass->type == PANGO_ATTR_LANGUAGE)
found->language = TRUE;
return TRUE;
}
static void
test_pango_attributes (void)
{
GtkBuilder *builder;
FoundAttrs found = { 0, };
const gchar buffer[] =
"<interface>"
" <object class=\"GtkLabel\" id=\"label1\">"
" <attributes>"
" <attribute name=\"weight\" value=\"PANGO_WEIGHT_BOLD\"/>"
" <attribute name=\"foreground\" value=\"DarkSlateGray\"/>"
" <attribute name=\"underline\" value=\"True\"/>"
" <attribute name=\"size\" value=\"4\" start=\"5\" end=\"10\"/>"
" <attribute name=\"font-desc\" value=\"Sans Italic 22\"/>"
" <attribute name=\"language\" value=\"pt_BR\"/>"
" </attributes>"
" </object>"
"</interface>";
const gchar err_buffer1[] =
"<interface>"
" <object class=\"GtkLabel\" id=\"label1\">"
" <attributes>"
" <attribute name=\"weight\"/>"
" </attributes>"
" </object>"
"</interface>";
const gchar err_buffer2[] =
"<interface>"
" <object class=\"GtkLabel\" id=\"label1\">"
" <attributes>"
" <attribute name=\"weight\" value=\"PANGO_WEIGHT_BOLD\" unrecognized=\"True\"/>"
" </attributes>"
" </object>"
"</interface>";
GObject *label;
GError *error = NULL;
PangoAttrList *attrs, *filtered;
/* Test attributes are set */
builder = builder_new_from_string (buffer, -1, NULL);
label = gtk_builder_get_object (builder, "label1");
g_assert (label != NULL);
attrs = gtk_label_get_attributes (GTK_LABEL (label));
g_assert (attrs != NULL);
filtered = pango_attr_list_filter (attrs, filter_pango_attrs, &found);
g_assert (filtered);
pango_attr_list_unref (filtered);
g_assert (found.weight);
g_assert (found.foreground);
g_assert (found.underline);
g_assert (found.size);
g_assert (found.language);
g_assert (found.font_desc);
g_object_unref (builder);
/* Test errors are set */
builder = gtk_builder_new ();
gtk_builder_add_from_string (builder, err_buffer1, -1, &error);
label = gtk_builder_get_object (builder, "label1");
g_assert (error);
g_object_unref (builder);
g_error_free (error);
error = NULL;
builder = gtk_builder_new ();
gtk_builder_add_from_string (builder, err_buffer2, -1, &error);
label = gtk_builder_get_object (builder, "label1");
g_assert (error);
g_object_unref (builder);
g_error_free (error);
}
static void
test_file (const gchar *filename)
{
@ -1996,6 +2108,7 @@ main (int argc, char **argv)
g_test_add_func ("/Builder/Reference Counting", test_reference_counting);
g_test_add_func ("/Builder/Window", test_window);
g_test_add_func ("/Builder/IconFactory", test_icon_factory);
g_test_add_func ("/Builder/PangoAttributes", test_pango_attributes);
return g_test_run();
}