mutter/clutter/tests/conform/text.c
Marco Trevisan (Treviño) af3662775e clutter/text: Generate resource scaled text and paint it at proper scaling
When resource scale is set we need to generate a scaled PangoLayout (by adding
a new scale attribute, or adjusting the one we already have according the
resource scale), then it has to be painted with proper scaling matrix.

So everything that has to do with PangoLayout has to be in real coordinates,
then clutter logical coords multiplied by resource scaling.
While the actual size of the layout is the one of the PangoLayout divided by
resource scale.

We map the text positions to logical coords by default, while using
the pixel coordinates when painting.

We fall back to scale 1 when calculating preferred size if no scale is
known. The pango layout will not have set a layout scale attribute,
meaning it'll be 1, thus we should just assume the layout scale is 1 here.
Not doing so might result in the preferred size being 0x0 meaning the
actor won't be laid out properly.

Fixes https://gitlab.gnome.org/GNOME/mutter/issues/135

https://bugzilla.gnome.org/show_bug.cgi?id=765011
https://gitlab.gnome.org/GNOME/mutter/merge_requests/3
2019-03-01 17:46:49 +00:00

564 lines
15 KiB
C

#include <glib.h>
#include <clutter/clutter.h>
#include <string.h>
typedef struct {
gunichar unichar;
const char bytes[6];
gint nbytes;
} TestData;
static const TestData
test_text_data[] = {
{ 0xe4, "\xc3\xa4", 2 }, /* LATIN SMALL LETTER A WITH DIAERESIS */
{ 0x2665, "\xe2\x99\xa5", 3 } /* BLACK HEART SUIT */
};
static void
text_utf8_validation (void)
{
int i;
for (i = 0; i < G_N_ELEMENTS (test_text_data); i++)
{
const TestData *t = &test_text_data[i];
gunichar unichar;
char bytes[6];
int nbytes;
g_assert (g_unichar_validate (t->unichar));
nbytes = g_unichar_to_utf8 (t->unichar, bytes);
bytes[nbytes] = '\0';
g_assert_cmpint (nbytes, ==, t->nbytes);
g_assert (memcmp (t->bytes, bytes, nbytes) == 0);
unichar = g_utf8_get_char_validated (bytes, nbytes);
g_assert_cmpint (unichar, ==, t->unichar);
}
}
static int
get_nbytes (ClutterText *text)
{
const char *s = clutter_text_get_text (text);
return strlen (s);
}
static int
get_nchars (ClutterText *text)
{
const char *s = clutter_text_get_text (text);
g_assert (g_utf8_validate (s, -1, NULL));
return g_utf8_strlen (s, -1);
}
#define DONT_MOVE_CURSOR (-2)
static void
insert_unichar (ClutterText *text, gunichar unichar, int position)
{
if (position > DONT_MOVE_CURSOR)
{
clutter_text_set_cursor_position (text, position);
g_assert_cmpint (clutter_text_get_cursor_position (text), ==, position);
}
clutter_text_insert_unichar (text, unichar);
}
static void
text_set_empty (void)
{
ClutterText *text = CLUTTER_TEXT (clutter_text_new ());
g_object_ref_sink (text);
g_assert_cmpstr (clutter_text_get_text (text), ==, "");
g_assert_cmpint (*clutter_text_get_text (text), ==, '\0');
g_assert_cmpint (clutter_text_get_cursor_position (text), ==, -1);
clutter_text_set_text (text, "");
g_assert_cmpint (get_nchars (text), ==, 0);
g_assert_cmpint (get_nbytes (text), ==, 0);
g_assert_cmpint (clutter_text_get_cursor_position (text), ==, -1);
clutter_actor_destroy (CLUTTER_ACTOR (text));
}
static void
text_set_text (void)
{
ClutterText *text = CLUTTER_TEXT (clutter_text_new ());
g_object_ref_sink (text);
clutter_text_set_text (text, "abcdef");
g_assert_cmpint (get_nchars (text), ==, 6);
g_assert_cmpint (get_nbytes (text), ==, 6);
g_assert_cmpint (clutter_text_get_cursor_position (text), ==, -1);
clutter_text_set_cursor_position (text, 5);
g_assert_cmpint (clutter_text_get_cursor_position (text), ==, 5);
/* FIXME: cursor position should be -1?
clutter_text_set_text (text, "");
g_assert_cmpint (clutter_text_get_cursor_position (text), ==, -1);
*/
clutter_actor_destroy (CLUTTER_ACTOR (text));
}
static void
text_append_some (void)
{
ClutterText *text = CLUTTER_TEXT (clutter_text_new ());
int i;
g_object_ref_sink (text);
for (i = 0; i < G_N_ELEMENTS (test_text_data); i++)
{
const TestData *t = &test_text_data[i];
int j;
for (j = 1; j <= 4; j++)
{
insert_unichar (text, t->unichar, DONT_MOVE_CURSOR);
g_assert_cmpint (get_nchars (text), ==, j);
g_assert_cmpint (get_nbytes (text), ==, j * t->nbytes);
g_assert_cmpint (clutter_text_get_cursor_position (text), ==, -1);
}
clutter_text_set_text (text, "");
}
clutter_actor_destroy (CLUTTER_ACTOR (text));
}
static void
text_prepend_some (void)
{
ClutterText *text = CLUTTER_TEXT (clutter_text_new ());
int i;
g_object_ref_sink (text);
for (i = 0; i < G_N_ELEMENTS (test_text_data); i++)
{
const TestData *t = &test_text_data[i];
int j;
clutter_text_insert_unichar (text, t->unichar);
g_assert_cmpint (get_nchars (text), ==, 1);
g_assert_cmpint (get_nbytes (text), ==, 1 * t->nbytes);
g_assert_cmpint (clutter_text_get_cursor_position (text), ==, -1);
for (j = 2; j <= 4; j++)
{
insert_unichar (text, t->unichar, 0);
g_assert_cmpint (get_nchars (text), ==, j);
g_assert_cmpint (get_nbytes (text), ==, j * t->nbytes);
g_assert_cmpint (clutter_text_get_cursor_position (text), ==, 1);
}
clutter_text_set_text (text, "");
}
clutter_actor_destroy (CLUTTER_ACTOR (text));
}
static void
text_insert (void)
{
ClutterText *text = CLUTTER_TEXT (clutter_text_new ());
int i;
g_object_ref_sink (text);
for (i = 0; i < G_N_ELEMENTS (test_text_data); i++)
{
const TestData *t = &test_text_data[i];
clutter_text_insert_unichar (text, t->unichar);
clutter_text_insert_unichar (text, t->unichar);
insert_unichar (text, t->unichar, 1);
g_assert_cmpint (get_nchars (text), ==, 3);
g_assert_cmpint (get_nbytes (text), ==, 3 * t->nbytes);
g_assert_cmpint (clutter_text_get_cursor_position (text), ==, 2);
clutter_text_set_text (text, "");
}
clutter_actor_destroy (CLUTTER_ACTOR (text));
}
static void
text_delete_chars (void)
{
ClutterText *text = CLUTTER_TEXT (clutter_text_new ());
int i;
g_object_ref_sink (text);
for (i = 0; i < G_N_ELEMENTS (test_text_data); i++)
{
const TestData *t = &test_text_data[i];
int j;
for (j = 0; j < 4; j++)
clutter_text_insert_unichar (text, t->unichar);
if (g_test_verbose ())
g_print ("text: %s\n", clutter_text_get_text (text));
clutter_text_set_cursor_position (text, 2);
clutter_text_delete_chars (text, 1);
if (g_test_verbose ())
g_print ("text: %s (cursor at: %d)\n",
clutter_text_get_text (text),
clutter_text_get_cursor_position (text));
g_assert_cmpint (get_nchars (text), ==, 3);
g_assert_cmpint (get_nbytes (text), ==, 3 * t->nbytes);
g_assert_cmpint (clutter_text_get_cursor_position (text), ==, 1);
clutter_text_set_cursor_position (text, 2);
clutter_text_delete_chars (text, 1);
if (g_test_verbose ())
g_print ("text: %s (cursor at: %d)\n",
clutter_text_get_text (text),
clutter_text_get_cursor_position (text));
g_assert_cmpint (get_nchars (text), ==, 2);
g_assert_cmpint (get_nbytes (text), ==, 2 * t->nbytes);
g_assert_cmpint (clutter_text_get_cursor_position (text), ==, 1);
clutter_text_set_text (text, "");
}
clutter_actor_destroy (CLUTTER_ACTOR (text));
}
static void
text_get_chars (void)
{
ClutterText *text = CLUTTER_TEXT (clutter_text_new ());
gchar *chars;
g_object_ref_sink (text);
clutter_text_set_text (text, "00abcdef11");
g_assert_cmpint (get_nchars (text), ==, 10);
g_assert_cmpint (get_nbytes (text), ==, 10);
g_assert_cmpstr (clutter_text_get_text (text), ==, "00abcdef11");
chars = clutter_text_get_chars (text, 2, -1);
g_assert_cmpstr (chars, ==, "abcdef11");
g_free (chars);
chars = clutter_text_get_chars (text, 0, 8);
g_assert_cmpstr (chars, ==, "00abcdef");
g_free (chars);
chars = clutter_text_get_chars (text, 2, 8);
g_assert_cmpstr (chars, ==, "abcdef");
g_free (chars);
chars = clutter_text_get_chars (text, 8, 12);
g_assert_cmpstr (chars, ==, "11");
g_free (chars);
clutter_actor_destroy (CLUTTER_ACTOR (text));
}
static void
text_delete_text (void)
{
ClutterText *text = CLUTTER_TEXT (clutter_text_new ());
int i;
g_object_ref_sink (text);
for (i = 0; i < G_N_ELEMENTS (test_text_data); i++)
{
const TestData *t = &test_text_data[i];
int j;
for (j = 0; j < 4; j++)
clutter_text_insert_unichar (text, t->unichar);
clutter_text_set_cursor_position (text, 3);
clutter_text_delete_text (text, 2, 4);
g_assert_cmpint (get_nchars (text), ==, 2);
g_assert_cmpint (get_nbytes (text), ==, 2 * t->nbytes);
/* FIXME: cursor position should be -1?
g_assert_cmpint (clutter_text_get_cursor_position (text), ==, -1);
*/
clutter_text_set_text (text, "");
}
clutter_actor_destroy (CLUTTER_ACTOR (text));
}
static void
text_password_char (void)
{
ClutterText *text = CLUTTER_TEXT (clutter_text_new ());
g_object_ref_sink (text);
g_assert_cmpint (clutter_text_get_password_char (text), ==, 0);
clutter_text_set_text (text, "hello");
g_assert_cmpstr (clutter_text_get_text (text), ==, "hello");
clutter_text_set_password_char (text, '*');
g_assert_cmpint (clutter_text_get_password_char (text), ==, '*');
g_assert_cmpstr (clutter_text_get_text (text), ==, "hello");
clutter_actor_destroy (CLUTTER_ACTOR (text));
}
static ClutterEvent *
init_event (void)
{
ClutterEvent *retval = clutter_event_new (CLUTTER_KEY_PRESS);
clutter_event_set_time (retval, CLUTTER_CURRENT_TIME);
clutter_event_set_flags (retval, CLUTTER_EVENT_FLAG_SYNTHETIC);
return retval;
}
static void
send_keyval (ClutterText *text, int keyval)
{
ClutterEvent *event = init_event ();
/* Unicode should be ignored for cursor keys etc. */
clutter_event_set_key_unicode (event, 0);
clutter_event_set_key_symbol (event, keyval);
clutter_actor_event (CLUTTER_ACTOR (text), event, FALSE);
clutter_event_free (event);
}
static void
send_unichar (ClutterText *text, gunichar unichar)
{
ClutterEvent *event = init_event ();
/* Key symbol should be ignored for printable characters */
clutter_event_set_key_symbol (event, 0);
clutter_event_set_key_unicode (event, unichar);
clutter_actor_event (CLUTTER_ACTOR (text), event, FALSE);
clutter_event_free (event);
}
static void
text_cursor (void)
{
ClutterText *text = CLUTTER_TEXT (clutter_text_new ());
int i;
g_object_ref_sink (text);
/* only editable entries listen to events */
clutter_text_set_editable (text, TRUE);
for (i = 0; i < G_N_ELEMENTS (test_text_data); i++)
{
const TestData *t = &test_text_data[i];
int j;
for (j = 0; j < 4; ++j)
clutter_text_insert_unichar (text, t->unichar);
clutter_text_set_cursor_position (text, 2);
/* test cursor moves and is clamped */
send_keyval (text, CLUTTER_KEY_Left);
g_assert_cmpint (clutter_text_get_cursor_position (text), ==, 1);
send_keyval (text, CLUTTER_KEY_Left);
g_assert_cmpint (clutter_text_get_cursor_position (text), ==, 0);
send_keyval (text, CLUTTER_KEY_Left);
g_assert_cmpint (clutter_text_get_cursor_position (text), ==, 0);
/* delete text containing the cursor */
clutter_text_set_cursor_position (text, 3);
g_assert_cmpint (clutter_text_get_cursor_position (text), ==, 3);
clutter_text_delete_text (text, 2, 4);
send_keyval (text, CLUTTER_KEY_Left);
/* FIXME: cursor position should be -1?
g_assert_cmpint (clutter_text_get_cursor_position (text), ==, -1);
*/
clutter_text_set_text (text, "");
}
clutter_actor_destroy (CLUTTER_ACTOR (text));
}
static void
text_event (void)
{
ClutterText *text = CLUTTER_TEXT (clutter_text_new ());
int i;
g_object_ref_sink (text);
/* only editable entries listen to events */
clutter_text_set_editable (text, TRUE);
for (i = 0; i < G_N_ELEMENTS (test_text_data); i++)
{
const TestData *t = &test_text_data[i];
send_unichar (text, t->unichar);
g_assert_cmpint (get_nchars (text), ==, 1);
g_assert_cmpint (get_nbytes (text), ==, 1 * t->nbytes);
g_assert_cmpint (clutter_text_get_cursor_position (text), ==, -1);
clutter_text_set_text (text, "");
}
clutter_actor_destroy (CLUTTER_ACTOR (text));
}
static inline void
validate_markup_attributes (ClutterText *text,
PangoAttrType attr_type,
int start_index,
int end_index)
{
PangoLayout *layout;
PangoAttrList *attrs;
PangoAttrIterator *iter;
layout = clutter_text_get_layout (text);
g_assert (layout != NULL);
attrs = pango_layout_get_attributes (layout);
g_assert (attrs != NULL);
iter = pango_attr_list_get_iterator (attrs);
while (pango_attr_iterator_next (iter))
{
GSList *attributes = pango_attr_iterator_get_attrs (iter);
PangoAttribute *a;
if (attributes == NULL)
break;
g_assert (attributes->data != NULL);
a = attributes->data;
if (a->klass->type == PANGO_ATTR_SCALE)
{
PangoAttrFloat *scale = (PangoAttrFloat*) a;
float resource_scale;
if (!clutter_actor_get_resource_scale (CLUTTER_ACTOR (text), &resource_scale))
resource_scale = 1.0;
g_assert_cmpfloat (scale->value, ==, resource_scale);
g_slist_free_full (attributes, (GDestroyNotify) pango_attribute_destroy);
continue;
}
g_assert (a->klass->type == attr_type);
g_assert_cmpint (a->start_index, ==, start_index);
g_assert_cmpint (a->end_index, ==, end_index);
g_slist_free_full (attributes, (GDestroyNotify) pango_attribute_destroy);
}
pango_attr_iterator_destroy (iter);
}
static void
text_idempotent_use_markup (void)
{
ClutterText *text;
const char *contents = "foo <b>bar</b>";
const char *display = "foo bar";
int bar_start_index = strstr (display, "bar") - display;
int bar_end_index = bar_start_index + strlen ("bar");
/* case 1: text -> use_markup */
if (g_test_verbose ())
g_print ("text: '%s' -> use-markup: TRUE\n", contents);
text = g_object_new (CLUTTER_TYPE_TEXT,
"text", contents, "use-markup", TRUE,
NULL);
g_object_ref_sink (text);
if (g_test_verbose ())
g_print ("Contents: '%s' (expected: '%s')\n",
clutter_text_get_text (text),
display);
g_assert_cmpstr (clutter_text_get_text (text), ==, display);
validate_markup_attributes (text,
PANGO_ATTR_WEIGHT,
bar_start_index,
bar_end_index);
clutter_actor_destroy (CLUTTER_ACTOR (text));
/* case 2: use_markup -> text */
if (g_test_verbose ())
g_print ("use-markup: TRUE -> text: '%s'\n", contents);
text = g_object_new (CLUTTER_TYPE_TEXT,
"use-markup", TRUE, "text", contents,
NULL);
if (g_test_verbose ())
g_print ("Contents: '%s' (expected: '%s')\n",
clutter_text_get_text (text),
display);
g_assert_cmpstr (clutter_text_get_text (text), ==, display);
validate_markup_attributes (text,
PANGO_ATTR_WEIGHT,
bar_start_index,
bar_end_index);
clutter_actor_destroy (CLUTTER_ACTOR (text));
}
CLUTTER_TEST_SUITE (
CLUTTER_TEST_UNIT ("/text/utf8-validation", text_utf8_validation)
CLUTTER_TEST_UNIT ("/text/set-empty", text_set_empty)
CLUTTER_TEST_UNIT ("/text/set-text", text_set_text)
CLUTTER_TEST_UNIT ("/text/append-some", text_append_some)
CLUTTER_TEST_UNIT ("/text/prepend-some", text_prepend_some)
CLUTTER_TEST_UNIT ("/text/insert", text_insert)
CLUTTER_TEST_UNIT ("/text/delete-chars", text_delete_chars)
CLUTTER_TEST_UNIT ("/text/get-chars", text_get_chars)
CLUTTER_TEST_UNIT ("/text/delete-text", text_delete_text)
CLUTTER_TEST_UNIT ("/text/password-char", text_password_char)
CLUTTER_TEST_UNIT ("/text/cursor", text_cursor)
CLUTTER_TEST_UNIT ("/text/event", text_event)
CLUTTER_TEST_UNIT ("/text/idempotent-use-markup", text_idempotent_use_markup)
)