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mutter/clutter/examples/pan-action.c

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pan-action: add PanAction, to handle panning in scrollable actors PanAction is a GestureAction-subclass that implements the panning concept for scrollable actors, with the ability to emit interpolated signals to emulate the kinetic inertia of the panning. PanAction provides: • pan signal, notifying users of the panning gesture status; • pan-stopped signal, emitted at the end of the interpolated phase of the panning gesture, if enabled; • pan-axis property, to allow constraining the dragging to a specific axis; • interpolated property, to enable or disable the inertial behaviour; • deceleration property, to customize the rate at which the momentum of the panning will be slowed down; • acceleration-factor property, applied to the inertial momentum when starting the interpolated sequence. An interactive test is also provided. https://bugzilla.gnome.org/show_bug.cgi?id=681648
2012-08-25 14:23:23 +00:00
#include <stdlib.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <clutter/clutter.h>
examples/pan-action: Enable the xinput backend to test touch events
2012-10-01 08:57:07 +00:00
#ifdef CLUTTER_WINDOWING_X11
#include <clutter/x11/clutter-x11.h>
#endif
pan-action: add PanAction, to handle panning in scrollable actors PanAction is a GestureAction-subclass that implements the panning concept for scrollable actors, with the ability to emit interpolated signals to emulate the kinetic inertia of the panning. PanAction provides: • pan signal, notifying users of the panning gesture status; • pan-stopped signal, emitted at the end of the interpolated phase of the panning gesture, if enabled; • pan-axis property, to allow constraining the dragging to a specific axis; • interpolated property, to enable or disable the inertial behaviour; • deceleration property, to customize the rate at which the momentum of the panning will be slowed down; • acceleration-factor property, applied to the inertial momentum when starting the interpolated sequence. An interactive test is also provided. https://bugzilla.gnome.org/show_bug.cgi?id=681648
2012-08-25 14:23:23 +00:00
static ClutterActor *
create_content_actor (void)
{
ClutterActor *content;
ClutterContent *image;
GdkPixbuf *pixbuf;
content = clutter_actor_new ();
clutter_actor_set_size (content, 720, 720);
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 14:36:16 +00:00
pixbuf = gdk_pixbuf_new_from_file ("redhand.png", NULL);
pan-action: add PanAction, to handle panning in scrollable actors PanAction is a GestureAction-subclass that implements the panning concept for scrollable actors, with the ability to emit interpolated signals to emulate the kinetic inertia of the panning. PanAction provides: • pan signal, notifying users of the panning gesture status; • pan-stopped signal, emitted at the end of the interpolated phase of the panning gesture, if enabled; • pan-axis property, to allow constraining the dragging to a specific axis; • interpolated property, to enable or disable the inertial behaviour; • deceleration property, to customize the rate at which the momentum of the panning will be slowed down; • acceleration-factor property, applied to the inertial momentum when starting the interpolated sequence. An interactive test is also provided. https://bugzilla.gnome.org/show_bug.cgi?id=681648
2012-08-25 14:23:23 +00:00
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);
clutter_actor_set_content_scaling_filters (content,
CLUTTER_SCALING_FILTER_TRILINEAR,
CLUTTER_SCALING_FILTER_LINEAR);
clutter_actor_set_content_gravity (content, CLUTTER_CONTENT_GRAVITY_RESIZE_ASPECT);
clutter_actor_set_content (content, image);
g_object_unref (image);
return content;
}
static gboolean
on_pan (ClutterPanAction *action,
ClutterActor *scroll,
gboolean is_interpolated,
gpointer *user_data)
{
gfloat delta_x, delta_y;
gesture-action: Add clutter_gesture_action_get_last_event() Export the last event received for each touch point in its entirety, instead of duplicating ClutterEvent accessors one at a time. examples/pan-action.c has been updated to show the type of the event that's causing the panning. https://bugzilla.gnome.org/show_bug.cgi?id=685737
2012-10-08 15:44:13 +00:00
const ClutterEvent *event = NULL;
pan-action: add PanAction, to handle panning in scrollable actors PanAction is a GestureAction-subclass that implements the panning concept for scrollable actors, with the ability to emit interpolated signals to emulate the kinetic inertia of the panning. PanAction provides: • pan signal, notifying users of the panning gesture status; • pan-stopped signal, emitted at the end of the interpolated phase of the panning gesture, if enabled; • pan-axis property, to allow constraining the dragging to a specific axis; • interpolated property, to enable or disable the inertial behaviour; • deceleration property, to customize the rate at which the momentum of the panning will be slowed down; • acceleration-factor property, applied to the inertial momentum when starting the interpolated sequence. An interactive test is also provided. https://bugzilla.gnome.org/show_bug.cgi?id=681648
2012-08-25 14:23:23 +00:00
if (is_interpolated)
clutter_pan_action_get_interpolated_delta (action, &delta_x, &delta_y);
else
gesture-action: Add clutter_gesture_action_get_last_event() Export the last event received for each touch point in its entirety, instead of duplicating ClutterEvent accessors one at a time. examples/pan-action.c has been updated to show the type of the event that's causing the panning. https://bugzilla.gnome.org/show_bug.cgi?id=685737
2012-10-08 15:44:13 +00:00
{
clutter_gesture_action_get_motion_delta (CLUTTER_GESTURE_ACTION (action), 0, &delta_x, &delta_y);
event = clutter_gesture_action_get_last_event (CLUTTER_GESTURE_ACTION (action), 0);
}
pan-action: add PanAction, to handle panning in scrollable actors PanAction is a GestureAction-subclass that implements the panning concept for scrollable actors, with the ability to emit interpolated signals to emulate the kinetic inertia of the panning. PanAction provides: • pan signal, notifying users of the panning gesture status; • pan-stopped signal, emitted at the end of the interpolated phase of the panning gesture, if enabled; • pan-axis property, to allow constraining the dragging to a specific axis; • interpolated property, to enable or disable the inertial behaviour; • deceleration property, to customize the rate at which the momentum of the panning will be slowed down; • acceleration-factor property, applied to the inertial momentum when starting the interpolated sequence. An interactive test is also provided. https://bugzilla.gnome.org/show_bug.cgi?id=681648
2012-08-25 14:23:23 +00:00
gesture-action: Add clutter_gesture_action_get_last_event() Export the last event received for each touch point in its entirety, instead of duplicating ClutterEvent accessors one at a time. examples/pan-action.c has been updated to show the type of the event that's causing the panning. https://bugzilla.gnome.org/show_bug.cgi?id=685737
2012-10-08 15:44:13 +00:00
g_print ("[%s] panning dx:%.2f dy:%.2f\n",
event == NULL ? "INTERPOLATED" :
event->type == CLUTTER_MOTION ? "MOTION" :
event->type == CLUTTER_TOUCH_UPDATE ? "TOUCH UPDATE" :
"?",
delta_x, delta_y);
pan-action: add PanAction, to handle panning in scrollable actors PanAction is a GestureAction-subclass that implements the panning concept for scrollable actors, with the ability to emit interpolated signals to emulate the kinetic inertia of the panning. PanAction provides: • pan signal, notifying users of the panning gesture status; • pan-stopped signal, emitted at the end of the interpolated phase of the panning gesture, if enabled; • pan-axis property, to allow constraining the dragging to a specific axis; • interpolated property, to enable or disable the inertial behaviour; • deceleration property, to customize the rate at which the momentum of the panning will be slowed down; • acceleration-factor property, applied to the inertial momentum when starting the interpolated sequence. An interactive test is also provided. https://bugzilla.gnome.org/show_bug.cgi?id=681648
2012-08-25 14:23:23 +00:00
return TRUE;
}
static ClutterActor *
create_scroll_actor (ClutterActor *stage)
{
ClutterActor *scroll;
ClutterAction *pan_action;
/* our scrollable viewport */
scroll = clutter_actor_new ();
clutter_actor_set_name (scroll, "scroll");
clutter_actor_add_constraint (scroll, clutter_align_constraint_new (stage, CLUTTER_ALIGN_X_AXIS, 0));
clutter_actor_add_constraint (scroll, clutter_bind_constraint_new (stage, CLUTTER_BIND_SIZE, 0));
clutter_actor_add_child (scroll, create_content_actor ());
pan_action = clutter_pan_action_new ();
clutter_pan_action_set_interpolate (CLUTTER_PAN_ACTION (pan_action), TRUE);
g_signal_connect (pan_action, "pan", G_CALLBACK (on_pan), NULL);
Add PanAxis mode that automatically pins scroll based on initial movement This code is inspired by the implementation of the same feature for the Mx toolkit's MxKineticScrollView. See commit 4d08771. https://bugzilla.gnome.org/show_bug.cgi?id=707982
2013-09-11 15:33:57 +00:00
clutter_actor_add_action_with_name (scroll, "pan", pan_action);
pan-action: add PanAction, to handle panning in scrollable actors PanAction is a GestureAction-subclass that implements the panning concept for scrollable actors, with the ability to emit interpolated signals to emulate the kinetic inertia of the panning. PanAction provides: • pan signal, notifying users of the panning gesture status; • pan-stopped signal, emitted at the end of the interpolated phase of the panning gesture, if enabled; • pan-axis property, to allow constraining the dragging to a specific axis; • interpolated property, to enable or disable the inertial behaviour; • deceleration property, to customize the rate at which the momentum of the panning will be slowed down; • acceleration-factor property, applied to the inertial momentum when starting the interpolated sequence. An interactive test is also provided. https://bugzilla.gnome.org/show_bug.cgi?id=681648
2012-08-25 14:23:23 +00:00
clutter_actor_set_reactive (scroll, TRUE);
return scroll;
}
static gboolean
on_key_press (ClutterActor *stage,
ClutterEvent *event,
gpointer unused)
{
ClutterActor *scroll;
guint key_symbol;
scroll = clutter_actor_get_first_child (stage);
key_symbol = clutter_event_get_key_symbol (event);
if (key_symbol == CLUTTER_KEY_space)
examples/pan-action: Animate the content reset We can use the newly added support for implicit animations for the child transform.
2012-09-03 20:01:24 +00:00
{
clutter_actor_save_easing_state (scroll);
clutter_actor_set_easing_duration (scroll, 1000);
clutter_actor_set_child_transform (scroll, NULL);
clutter_actor_restore_easing_state (scroll);
}
pan-action: add PanAction, to handle panning in scrollable actors PanAction is a GestureAction-subclass that implements the panning concept for scrollable actors, with the ability to emit interpolated signals to emulate the kinetic inertia of the panning. PanAction provides: • pan signal, notifying users of the panning gesture status; • pan-stopped signal, emitted at the end of the interpolated phase of the panning gesture, if enabled; • pan-axis property, to allow constraining the dragging to a specific axis; • interpolated property, to enable or disable the inertial behaviour; • deceleration property, to customize the rate at which the momentum of the panning will be slowed down; • acceleration-factor property, applied to the inertial momentum when starting the interpolated sequence. An interactive test is also provided. https://bugzilla.gnome.org/show_bug.cgi?id=681648
2012-08-25 14:23:23 +00:00
return CLUTTER_EVENT_STOP;
}
Add PanAxis mode that automatically pins scroll based on initial movement This code is inspired by the implementation of the same feature for the Mx toolkit's MxKineticScrollView. See commit 4d08771. https://bugzilla.gnome.org/show_bug.cgi?id=707982
2013-09-11 15:33:57 +00:00
static gboolean
label_clicked_cb (ClutterText *label, ClutterEvent *event, ClutterActor *scroll)
{
ClutterPanAction *action = CLUTTER_PAN_ACTION (clutter_actor_get_action (scroll, "pan"));
const gchar *label_text = clutter_text_get_text (label);
if (g_str_equal (label_text, "X AXIS"))
clutter_pan_action_set_pan_axis (action, CLUTTER_PAN_X_AXIS);
else if (g_str_equal (label_text, "Y AXIS"))
clutter_pan_action_set_pan_axis (action, CLUTTER_PAN_Y_AXIS);
else if (g_str_equal (label_text, "AUTO"))
clutter_pan_action_set_pan_axis (action, CLUTTER_PAN_AXIS_AUTO);
else
clutter_pan_action_set_pan_axis (action, CLUTTER_PAN_AXIS_NONE);
return TRUE;
}
static void
add_label (const gchar *text, ClutterActor *box, ClutterActor *scroll)
{
ClutterActor *label;
label = clutter_text_new_with_text (NULL, text);
clutter_actor_set_reactive (label, TRUE);
clutter_actor_set_x_align (label, CLUTTER_ACTOR_ALIGN_START);
clutter_actor_set_x_expand (label, TRUE);
clutter_actor_add_child (box, label);
g_signal_connect (label, "button-release-event",
G_CALLBACK (label_clicked_cb), scroll);
}
pan-action: add PanAction, to handle panning in scrollable actors PanAction is a GestureAction-subclass that implements the panning concept for scrollable actors, with the ability to emit interpolated signals to emulate the kinetic inertia of the panning. PanAction provides: • pan signal, notifying users of the panning gesture status; • pan-stopped signal, emitted at the end of the interpolated phase of the panning gesture, if enabled; • pan-axis property, to allow constraining the dragging to a specific axis; • interpolated property, to enable or disable the inertial behaviour; • deceleration property, to customize the rate at which the momentum of the panning will be slowed down; • acceleration-factor property, applied to the inertial momentum when starting the interpolated sequence. An interactive test is also provided. https://bugzilla.gnome.org/show_bug.cgi?id=681648
2012-08-25 14:23:23 +00:00
int
main (int argc, char *argv[])
{
Add PanAxis mode that automatically pins scroll based on initial movement This code is inspired by the implementation of the same feature for the Mx toolkit's MxKineticScrollView. See commit 4d08771. https://bugzilla.gnome.org/show_bug.cgi?id=707982
2013-09-11 15:33:57 +00:00
ClutterActor *stage, *scroll, *box, *info;
ClutterLayoutManager *layout;
pan-action: add PanAction, to handle panning in scrollable actors PanAction is a GestureAction-subclass that implements the panning concept for scrollable actors, with the ability to emit interpolated signals to emulate the kinetic inertia of the panning. PanAction provides: • pan signal, notifying users of the panning gesture status; • pan-stopped signal, emitted at the end of the interpolated phase of the panning gesture, if enabled; • pan-axis property, to allow constraining the dragging to a specific axis; • interpolated property, to enable or disable the inertial behaviour; • deceleration property, to customize the rate at which the momentum of the panning will be slowed down; • acceleration-factor property, applied to the inertial momentum when starting the interpolated sequence. An interactive test is also provided. https://bugzilla.gnome.org/show_bug.cgi?id=681648
2012-08-25 14:23:23 +00:00
if (clutter_init (&argc, &argv) != CLUTTER_INIT_SUCCESS)
return EXIT_FAILURE;
/* create a new stage */
stage = clutter_stage_new ();
clutter_stage_set_title (CLUTTER_STAGE (stage), "Pan Action");
clutter_stage_set_user_resizable (CLUTTER_STAGE (stage), TRUE);
scroll = create_scroll_actor (stage);
clutter_actor_add_child (stage, scroll);
Add PanAxis mode that automatically pins scroll based on initial movement This code is inspired by the implementation of the same feature for the Mx toolkit's MxKineticScrollView. See commit 4d08771. https://bugzilla.gnome.org/show_bug.cgi?id=707982
2013-09-11 15:33:57 +00:00
box = clutter_actor_new ();
clutter_actor_add_child (stage, box);
clutter_actor_set_position (box, 12, 12);
layout = clutter_box_layout_new ();
clutter_box_layout_set_orientation (CLUTTER_BOX_LAYOUT (layout), CLUTTER_ORIENTATION_VERTICAL);
clutter_actor_set_layout_manager (box, layout);
pan-action: add PanAction, to handle panning in scrollable actors PanAction is a GestureAction-subclass that implements the panning concept for scrollable actors, with the ability to emit interpolated signals to emulate the kinetic inertia of the panning. PanAction provides: • pan signal, notifying users of the panning gesture status; • pan-stopped signal, emitted at the end of the interpolated phase of the panning gesture, if enabled; • pan-axis property, to allow constraining the dragging to a specific axis; • interpolated property, to enable or disable the inertial behaviour; • deceleration property, to customize the rate at which the momentum of the panning will be slowed down; • acceleration-factor property, applied to the inertial momentum when starting the interpolated sequence. An interactive test is also provided. https://bugzilla.gnome.org/show_bug.cgi?id=681648
2012-08-25 14:23:23 +00:00
info = clutter_text_new_with_text (NULL, "Press <space> to reset the image position.");
Add PanAxis mode that automatically pins scroll based on initial movement This code is inspired by the implementation of the same feature for the Mx toolkit's MxKineticScrollView. See commit 4d08771. https://bugzilla.gnome.org/show_bug.cgi?id=707982
2013-09-11 15:33:57 +00:00
clutter_actor_add_child (box, info);
info = clutter_text_new_with_text (NULL, "Click labels below to change AXIS pinning.");
clutter_actor_add_child (box, info);
add_label ("NONE", box, scroll);
add_label ("X AXIS", box, scroll);
add_label ("Y AXIS", box, scroll);
add_label ("AUTO", box, scroll);
pan-action: add PanAction, to handle panning in scrollable actors PanAction is a GestureAction-subclass that implements the panning concept for scrollable actors, with the ability to emit interpolated signals to emulate the kinetic inertia of the panning. PanAction provides: • pan signal, notifying users of the panning gesture status; • pan-stopped signal, emitted at the end of the interpolated phase of the panning gesture, if enabled; • pan-axis property, to allow constraining the dragging to a specific axis; • interpolated property, to enable or disable the inertial behaviour; • deceleration property, to customize the rate at which the momentum of the panning will be slowed down; • acceleration-factor property, applied to the inertial momentum when starting the interpolated sequence. An interactive test is also provided. https://bugzilla.gnome.org/show_bug.cgi?id=681648
2012-08-25 14:23:23 +00:00
g_signal_connect (stage, "destroy", G_CALLBACK (clutter_main_quit), NULL);
g_signal_connect (stage, "key-press-event", G_CALLBACK (on_key_press), scroll);
clutter_actor_show (stage);
clutter_main ();
return EXIT_SUCCESS;
}
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