mutter/clutter/tests/conform/text-cache.c

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#include <clutter/clutter.h>
#include <string.h>
#include <stdlib.h>
#include "test-conform-common.h"
#define TEST_FONT "Sans 10"
static const char long_text[] =
"<b>This</b> <i>is</i> some <span size=\"x-large\">REALLY</span> "
"long text that contains markup for testing the <tt>use_markup</tt> "
"property and to test word-wrapping, justification and alignment.";
typedef struct _CallbackData CallbackData;
struct _CallbackData
{
ClutterActor *stage;
ClutterActor *label;
PangoLayout *old_layout;
gboolean layout_changed;
PangoRectangle label_extents;
PangoLayout *test_layout;
gboolean test_failed;
};
static void
on_paint (ClutterActor *stage, CallbackData *data)
{
PangoLayout *new_layout;
/* Check whether the layout used for this paint is different from
the layout used for the last paint */
new_layout = clutter_text_get_layout (CLUTTER_TEXT (data->label));
data->layout_changed = data->old_layout != new_layout;
if (data->old_layout)
g_object_unref (data->old_layout);
/* Keep a reference to the old layout so we can be sure it won't
just reallocate a new layout with the same address */
data->old_layout = g_object_ref (new_layout);
pango_layout_get_extents (new_layout, NULL, &data->label_extents);
}
static void
force_redraw (CallbackData *data)
{
/* XXX - this is fugly; we force a paint on the stage, which
* will then paint the Text actor. inside the Text actor we
* check for a Layout with the allocation size. if the allocation
* has changed it will cause a relayout in the middle of the
* paint, which is expensive and broken. this will ensure that
* the test passes, though
*/
clutter_actor_paint (clutter_actor_get_stage (data->label));
}
static gboolean
check_result (CallbackData *data, const char *note,
gboolean layout_should_change)
{
PangoRectangle test_extents;
gboolean fail = FALSE;
if (g_test_verbose ())
g_print ("%s: ", note);
/* Force a redraw to get the on_paint handler to run */
force_redraw (data);
/* Compare the extents from the label with the extents from our test
layout */
pango_layout_get_extents (data->test_layout, NULL, &test_extents);
if (memcmp (&test_extents, &data->label_extents, sizeof (PangoRectangle)))
{
if (g_test_verbose ())
g_print ("extents are different: expected: %d, %d, %d, %d "
"-> text: %d, %d, %d, %d\n",
test_extents.x / 1024,
test_extents.y / 1024,
test_extents.width / 1024,
test_extents.height / 1024,
data->label_extents.x / 1024,
data->label_extents.y / 1024,
data->label_extents.width / 1024,
data->label_extents.height / 1024);
fail = TRUE;
}
else
{
if (g_test_verbose ())
g_print ("extents are the same, ");
}
if (data->layout_changed)
{
if (g_test_verbose ())
g_print ("layout changed, ");
}
else
{
if (g_test_verbose ())
g_print ("layout did not change, ");
}
if (data->layout_changed != layout_should_change)
fail = TRUE;
if (fail)
{
if (g_test_verbose ())
g_print ("FAIL\n");
data->test_failed = TRUE;
}
else
{
if (g_test_verbose ())
g_print ("pass\n");
}
return fail;
}
static gboolean
do_tests (CallbackData *data)
{
PangoFontDescription *fd;
static const ClutterColor red = { 0xff, 0x00, 0x00, 0xff };
PangoAttrList *attr_list, *attr_list_copy;
PangoAttribute *attr;
/* TEST 1: change the text */
clutter_text_set_text (CLUTTER_TEXT (data->label), "Counter 0");
pango_layout_set_text (data->test_layout, "Counter 0", -1);
g_assert (check_result (data, "Change text", TRUE) == FALSE);
/* TEST 2: change a single character */
clutter_text_set_text (CLUTTER_TEXT (data->label), "Counter 1");
pango_layout_set_text (data->test_layout, "Counter 1", -1);
g_assert (check_result (data, "Change a single character", TRUE) == FALSE);
/* TEST 3: move the label */
clutter_actor_set_position (data->label, 10, 0);
g_assert (check_result (data, "Move the label", FALSE) == FALSE);
/* TEST 4: change the font */
clutter_text_set_font_name (CLUTTER_TEXT (data->label), "Serif 15");
fd = pango_font_description_from_string ("Serif 15");
pango_layout_set_font_description (data->test_layout, fd);
pango_font_description_free (fd);
g_assert (check_result (data, "Change the font", TRUE) == FALSE);
/* TEST 5: change the color */
clutter_text_set_color (CLUTTER_TEXT (data->label), &red);
g_assert (check_result (data, "Change the color", FALSE) == FALSE);
/* TEST 6: change the attributes */
attr = pango_attr_weight_new (PANGO_WEIGHT_BOLD);
attr->start_index = 0;
attr->end_index = 2;
attr_list = pango_attr_list_new ();
pango_attr_list_insert (attr_list, attr);
attr_list_copy = pango_attr_list_copy (attr_list);
clutter_text_set_attributes (CLUTTER_TEXT (data->label), attr_list);
pango_layout_set_attributes (data->test_layout, attr_list_copy);
pango_attr_list_unref (attr_list_copy);
pango_attr_list_unref (attr_list);
g_assert (check_result (data, "Change the attributes", TRUE) == FALSE);
/* TEST 7: change the text again */
clutter_text_set_attributes (CLUTTER_TEXT (data->label), NULL);
clutter_text_set_text (CLUTTER_TEXT (data->label), long_text);
pango_layout_set_attributes (data->test_layout, NULL);
pango_layout_set_text (data->test_layout, long_text, -1);
g_assert (check_result (data, "Change the text again", TRUE) == FALSE);
/* TEST 8: enable markup */
clutter_text_set_use_markup (CLUTTER_TEXT (data->label), TRUE);
pango_layout_set_markup (data->test_layout, long_text, -1);
g_assert (check_result (data, "Enable markup", TRUE) == FALSE);
/* This part can't be a test because Clutter won't restrict the
width if wrapping and ellipsizing is disabled so the extents will
be different, but we still want to do it for the later tests */
clutter_actor_set_width (data->label, 200);
pango_layout_set_width (data->test_layout, 200 * PANGO_SCALE);
/* Force a redraw so that changing the width won't affect the
results */
force_redraw (data);
/* TEST 9: enable ellipsize */
clutter_text_set_ellipsize (CLUTTER_TEXT (data->label),
PANGO_ELLIPSIZE_END);
pango_layout_set_ellipsize (data->test_layout, PANGO_ELLIPSIZE_END);
g_assert (check_result (data, "Enable ellipsize", TRUE) == FALSE);
clutter_text_set_ellipsize (CLUTTER_TEXT (data->label),
PANGO_ELLIPSIZE_NONE);
pango_layout_set_ellipsize (data->test_layout, PANGO_ELLIPSIZE_NONE);
force_redraw (data);
/* TEST 10: enable line wrap */
clutter_text_set_line_wrap (CLUTTER_TEXT (data->label), TRUE);
pango_layout_set_wrap (data->test_layout, PANGO_WRAP_WORD);
g_assert (check_result (data, "Enable line wrap", TRUE) == FALSE);
/* TEST 11: change wrap mode
* FIXME - broken
*/
clutter_text_set_line_wrap_mode (CLUTTER_TEXT (data->label),
PANGO_WRAP_CHAR);
pango_layout_set_wrap (data->test_layout, PANGO_WRAP_CHAR);
g_assert (check_result (data, "Change wrap mode", TRUE) == FALSE);
/* TEST 12: enable justify */
clutter_text_set_justify (CLUTTER_TEXT (data->label), TRUE);
pango_layout_set_justify (data->test_layout, TRUE);
/* Pango appears to have a bug which means that you can't change the
justification after setting the text but this fixes it.
See http://bugzilla.gnome.org/show_bug.cgi?id=551865 */
pango_layout_context_changed (data->test_layout);
g_assert (check_result (data, "Enable justify", TRUE) == FALSE);
/* TEST 13: change alignment */
clutter_text_set_line_alignment (CLUTTER_TEXT (data->label),
PANGO_ALIGN_RIGHT);
pango_layout_set_alignment (data->test_layout, PANGO_ALIGN_RIGHT);
g_assert (check_result (data, "Change alignment", TRUE) == FALSE);
clutter_main_quit ();
return FALSE;
}
static PangoLayout *
make_layout_like_label (ClutterText *label)
{
PangoLayout *label_layout, *new_layout;
PangoContext *context;
PangoFontDescription *fd;
/* Make another layout using the same context as the layout from the
label */
label_layout = clutter_text_get_layout (label);
context = pango_layout_get_context (label_layout);
new_layout = pango_layout_new (context);
fd = pango_font_description_from_string (TEST_FONT);
pango_layout_set_font_description (new_layout, fd);
pango_font_description_free (fd);
return new_layout;
}
void
text_cache (void)
{
CallbackData data;
memset (&data, 0, sizeof (data));
data.stage = clutter_stage_new ();
data.label = clutter_text_new_with_text (TEST_FONT, "");
data.test_layout = make_layout_like_label (CLUTTER_TEXT (data.label));
g_signal_connect (data.stage, "paint", G_CALLBACK (on_paint), &data);
clutter_container_add (CLUTTER_CONTAINER (data.stage), data.label, NULL);
clutter_actor_show (data.stage);
clutter_threads_add_idle ((GSourceFunc) do_tests, &data);
clutter_main ();
clutter_actor_destroy (data.stage);
if (g_test_verbose ())
g_print ("\nOverall result: ");
if (g_test_verbose ())
{
if (data.test_failed)
g_print ("FAIL\n");
else
g_print ("pass\n");
}
else
g_assert (data.test_failed != TRUE);
}