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mutter/examples/bin-layout.c
Emmanuele Bassi 2a660fa298 Fully rework the conformance test suite 
The current conformance test suite is suboptimal in many ways.

All tests are built into the same binary, which makes adding new tests,
builting tests, and running groups of tests much more awkward than it
needs to be. The first issue, especially, raises the bar of contribution
in a significant way, while the other two take their toll on the
maintainer. All of these changes were introduced back when we had both
Clutter and Cogl tests in tree, and because we were building the test
suite for every single change; since then, Cogl moved out of tree with
all its tests, and we build the conformance test suite only when running
the `check` make target.

This admittedly large-ish commit changes the way the conformance test
suite works, taking advantage of the changes in the GTest API and test
harness.

First of all, all tests are now built separately, using their own test
suite as defined by each separate file. All tests run under the TAP
harness provided by GTest and Automake, to gather a proper report using
the Test Anything Protocol without using the `gtester` harness and the
`gtester-report` script. We also use the Makefile rules provided by GLib
to vastly simplify the build environment for the conformance test suite.

On top of the changes for the build and harness, we also provide new API
for creating and running test suites for Clutter. The API is public,
because the test suite has to use it, but it's minimal and mostly
provides convenience wrappers around GTest that make writing test units
for Clutter easier.

This commit disables all tests in the conformance test suite, as well as
moving the data files outside of the tests/data directory; the next few
commits will re-establish the conformance test suite separately so we
can check that everything works in a reliable way.
2013-12-12 18:51:11 +00:00

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#include <stdlib.h>
#include <cairo.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <clutter/clutter.h>
static const ClutterColor bg_color = { 0xcc, 0xcc, 0xcc, 0x99 };
static gboolean is_expanded = FALSE;
static gboolean
on_canvas_draw (ClutterCanvas *canvas,
cairo_t *cr,
gint width,
gint height)
{
cairo_pattern_t *pat;
gfloat x, y;
g_print (G_STRLOC ": Painting at %d x %d\n", width, height);
cairo_save (cr);
cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
cairo_paint (cr);
cairo_restore (cr);
#define BG_ROUND_RADIUS 12
x = y = 0;
cairo_move_to (cr, BG_ROUND_RADIUS, y);
cairo_line_to (cr, width - BG_ROUND_RADIUS, y);
cairo_curve_to (cr, width, y, width, y, width, BG_ROUND_RADIUS);
cairo_line_to (cr, width, height - BG_ROUND_RADIUS);
cairo_curve_to (cr, width, height, width, height, width - BG_ROUND_RADIUS, height);
cairo_line_to (cr, BG_ROUND_RADIUS, height);
cairo_curve_to (cr, x, height, x, height, x, height - BG_ROUND_RADIUS);
cairo_line_to (cr, x, BG_ROUND_RADIUS);
cairo_curve_to (cr, x, y, x, y, BG_ROUND_RADIUS, y);
cairo_close_path (cr);
clutter_cairo_set_source_color (cr, &bg_color);
cairo_stroke (cr);
x += 4;
y += 4;
width -= 4;
height -= 4;
cairo_move_to (cr, BG_ROUND_RADIUS, y);
cairo_line_to (cr, width - BG_ROUND_RADIUS, y);
cairo_curve_to (cr, width, y, width, y, width, BG_ROUND_RADIUS);
cairo_line_to (cr, width, height - BG_ROUND_RADIUS);
cairo_curve_to (cr, width, height, width, height, width - BG_ROUND_RADIUS, height);
cairo_line_to (cr, BG_ROUND_RADIUS, height);
cairo_curve_to (cr, x, height, x, height, x, height - BG_ROUND_RADIUS);
cairo_line_to (cr, x, BG_ROUND_RADIUS);
cairo_curve_to (cr, x, y, x, y, BG_ROUND_RADIUS, y);
cairo_close_path (cr);
pat = cairo_pattern_create_linear (0, 0, 0, height);
cairo_pattern_add_color_stop_rgba (pat, 1, .85, .85, .85, 1);
cairo_pattern_add_color_stop_rgba (pat, .95, 1, 1, 1, 1);
cairo_pattern_add_color_stop_rgba (pat, .05, 1, 1, 1, 1);
cairo_pattern_add_color_stop_rgba (pat, 0, .85, .85, .85, 1);
cairo_set_source (cr, pat);
cairo_fill (cr);
cairo_pattern_destroy (pat);
#undef BG_ROUND_RADIUS
return TRUE;
}
static gboolean
on_box_enter (ClutterActor *box,
ClutterEvent *event,
ClutterActor *emblem)
{
/* we ease the opacity linearly */
clutter_actor_save_easing_state (emblem);
clutter_actor_set_easing_mode (emblem, CLUTTER_LINEAR);
clutter_actor_set_opacity (emblem, 255);
clutter_actor_restore_easing_state (emblem);
return CLUTTER_EVENT_STOP;
}
static gboolean
on_box_leave (ClutterActor *box,
ClutterEvent *event,
ClutterActor *emblem)
{
clutter_actor_save_easing_state (emblem);
clutter_actor_set_easing_mode (emblem, CLUTTER_LINEAR);
clutter_actor_set_opacity (emblem, 0);
clutter_actor_restore_easing_state (emblem);
return CLUTTER_EVENT_STOP;
}
static void
on_emblem_clicked (ClutterClickAction *action,
ClutterActor *emblem,
ClutterActor *box)
{
/* we add a little bounce to the resizing of the box */
clutter_actor_save_easing_state (box);
clutter_actor_set_easing_mode (box, CLUTTER_EASE_OUT_BOUNCE);
clutter_actor_set_easing_duration (box, 500);
if (!is_expanded)
clutter_actor_set_size (box, 400, 400);
else
clutter_actor_set_size (box, 200, 200);
clutter_actor_restore_easing_state (box);
is_expanded = !is_expanded;
}
static gboolean
on_emblem_long_press (ClutterClickAction *action,
ClutterActor *emblem,
ClutterLongPressState state,
ClutterActor *box)
{
switch (state)
{
case CLUTTER_LONG_PRESS_QUERY:
g_print ("*** long press: query ***\n");
return is_expanded;
case CLUTTER_LONG_PRESS_CANCEL:
g_print ("*** long press: cancel ***\n");
break;
case CLUTTER_LONG_PRESS_ACTIVATE:
g_print ("*** long press: activate ***\n");
break;
}
return TRUE;
}
static void
redraw_canvas (ClutterActor *actor,
ClutterCanvas *canvas)
{
/* we want to invalidate the canvas and redraw its contents
* only when the size changes at the end of the animation,
* to avoid drawing all the states inbetween
*/
clutter_canvas_set_size (canvas,
clutter_actor_get_width (actor),
clutter_actor_get_height (actor));
}
int
main (int argc, char *argv[])
{
ClutterActor *stage, *box, *bg, *icon, *emblem, *label;
ClutterLayoutManager *layout;
ClutterContent *canvas, *image;
ClutterColor *color;
ClutterAction *action;
GdkPixbuf *pixbuf;
if (clutter_init (&argc, &argv) != CLUTTER_INIT_SUCCESS)
return 1;
/* prepare the stage */
stage = clutter_stage_new ();
clutter_stage_set_title (CLUTTER_STAGE (stage), "BinLayout");
clutter_actor_set_background_color (stage, CLUTTER_COLOR_Aluminium2);
clutter_actor_set_size (stage, 640, 480);
clutter_actor_show (stage);
g_signal_connect (stage, "destroy", G_CALLBACK (clutter_main_quit), NULL);
/* this is our BinLayout, with its default alignments */
layout = clutter_bin_layout_new (CLUTTER_BIN_ALIGNMENT_CENTER,
CLUTTER_BIN_ALIGNMENT_CENTER);
/* the main container; this actor will use the BinLayout to lay
* out its children; we use the anchor point to keep it centered
* on the same position even when we change its size
*/
box = clutter_actor_new ();
clutter_actor_set_layout_manager (box, layout);
clutter_actor_add_constraint (box, clutter_align_constraint_new (stage, CLUTTER_ALIGN_BOTH, 0.5));
clutter_actor_set_position (box, 320, 240);
clutter_actor_set_reactive (box, TRUE);
clutter_actor_set_name (box, "box");
clutter_actor_add_child (stage, box);
/* the background is drawn using a canvas content */
canvas = clutter_canvas_new ();
g_signal_connect (canvas, "draw", G_CALLBACK (on_canvas_draw), NULL);
clutter_canvas_set_size (CLUTTER_CANVAS (canvas), 200, 200);
/* this is the background actor; we want it to fill the whole
* of the allocation given to it by its parent
*/
bg = clutter_actor_new ();
clutter_actor_set_name (bg, "background");
clutter_actor_set_size (bg, 200, 200);
clutter_actor_set_content (bg, canvas);
clutter_actor_set_x_expand (bg, TRUE);
clutter_actor_set_y_expand (bg, TRUE);
clutter_actor_set_x_align (bg, CLUTTER_ACTOR_ALIGN_FILL);
clutter_actor_set_y_align (bg, CLUTTER_ACTOR_ALIGN_FILL);
clutter_actor_add_child (box, bg);
/* we use the ::transitions-completed signal to get notification
* of the end of the sizing animation; this allows us to redraw
* the canvas only once the animation has stopped
*/
g_signal_connect (box, "transitions-completed",
G_CALLBACK (redraw_canvas),
canvas);
/* we use GdkPixbuf to load an image from our data directory */
pixbuf = gdk_pixbuf_new_from_file ("redhand.png", NULL);
image = clutter_image_new ();
clutter_image_set_data (CLUTTER_IMAGE (image),
gdk_pixbuf_get_pixels (pixbuf),
gdk_pixbuf_get_has_alpha (pixbuf)
? COGL_PIXEL_FORMAT_RGBA_8888
: COGL_PIXEL_FORMAT_RGB_888,
gdk_pixbuf_get_width (pixbuf),
gdk_pixbuf_get_height (pixbuf),
gdk_pixbuf_get_rowstride (pixbuf),
NULL);
g_object_unref (pixbuf);
/* this is the icon; it's going to be centered inside the box actor.
* we use the content gravity to keep the aspect ratio of the image,
* and the scaling filters to get a better result when scaling the
* image down.
*/
icon = clutter_actor_new ();
clutter_actor_set_name (icon, "icon");
clutter_actor_set_size (icon, 196, 196);
clutter_actor_set_x_expand (icon, TRUE);
clutter_actor_set_y_expand (icon, TRUE);
clutter_actor_set_x_align (icon, CLUTTER_ACTOR_ALIGN_CENTER);
clutter_actor_set_y_align (icon, CLUTTER_ACTOR_ALIGN_CENTER);
clutter_actor_set_content_gravity (icon, CLUTTER_CONTENT_GRAVITY_RESIZE_ASPECT);
clutter_actor_set_content_scaling_filters (icon,
CLUTTER_SCALING_FILTER_TRILINEAR,
CLUTTER_SCALING_FILTER_LINEAR);
clutter_actor_set_content (icon, image);
clutter_actor_add_child (box, icon);
color = clutter_color_new (g_random_int_range (0, 255),
g_random_int_range (0, 255),
g_random_int_range (0, 255),
224);
/* this is the emblem: a small rectangle with a random color, that we
* want to put in the bottom right corner
*/
emblem = clutter_actor_new ();
clutter_actor_set_name (emblem, "emblem");
clutter_actor_set_size (emblem, 48, 48);
clutter_actor_set_background_color (emblem, color);
clutter_actor_set_x_expand (emblem, TRUE);
clutter_actor_set_y_expand (emblem, TRUE);
clutter_actor_set_x_align (emblem, CLUTTER_ACTOR_ALIGN_END);
clutter_actor_set_y_align (emblem, CLUTTER_ACTOR_ALIGN_END);
clutter_actor_set_reactive (emblem, TRUE);
clutter_actor_set_opacity (emblem, 0);
clutter_actor_add_child (box, emblem);
clutter_color_free (color);
/* when clicking on the emblem, we want to perform an action */
action = clutter_click_action_new ();
clutter_actor_add_action (emblem, action);
g_signal_connect (action, "clicked", G_CALLBACK (on_emblem_clicked), box);
g_signal_connect (action, "long-press", G_CALLBACK (on_emblem_long_press), box);
/* whenever the pointer enters the box, we show the emblem; we hide
* the emblem when the pointer leaves the box
*/
g_signal_connect (box,
"enter-event", G_CALLBACK (on_box_enter),
emblem);
g_signal_connect (box,
"leave-event", G_CALLBACK (on_box_leave),
emblem);
/* a label, that we want to position at the top and center of the box */
label = clutter_text_new ();
clutter_actor_set_name (label, "text");
clutter_text_set_text (CLUTTER_TEXT (label), "A simple test");
clutter_actor_set_x_expand (label, TRUE);
clutter_actor_set_x_align (label, CLUTTER_ACTOR_ALIGN_CENTER);
clutter_actor_set_y_expand (label, TRUE);
clutter_actor_set_y_align (label, CLUTTER_ACTOR_ALIGN_START);
clutter_actor_add_child (box, label);
clutter_main ();
return EXIT_SUCCESS;
}
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