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mutter/examples/drag-action.c

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action: Add DragAction, an action implementing drag capabilities DragAction is an Action sub-class that provides dragging capabilities to any actor. DragAction has: • drag-begin, drag-motion and drag-end signals, relaying the event information like coordinates, button and modifiers to user code; • drag-threshold property, for delaying the drag start by a given amount of pixels; • drag-handle property, to allow using other actors as the drag handle. • drag-axis property, to allow constraining the dragging to a specific axis. An interactive test demonstrating the various features is also provided.
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#include <stdlib.h>
#include <clutter/clutter.h>
effect: Add PageTurnEffect A simple deformation effect that simulates a page curl. Ported from MxDeformPageTurn inside the Mx toolkit, written by Chris Lord.
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static gboolean
on_enter (ClutterActor *actor,
ClutterEvent *event)
{
examples: Update drag and drop action code Use modern API and show idiomatic behaviour.
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ClutterTransition *t;
effect: Add PageTurnEffect A simple deformation effect that simulates a page curl. Ported from MxDeformPageTurn inside the Mx toolkit, written by Chris Lord.
2010-06-10 15:56:16 +00:00
examples: Update drag and drop action code Use modern API and show idiomatic behaviour.
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t = clutter_actor_get_transition (actor, "curl");
if (t == NULL)
{
t = clutter_property_transition_new ("@effects.curl.period");
clutter_timeline_set_duration (CLUTTER_TIMELINE (t), 250);
clutter_actor_add_transition (actor, "curl", t);
g_object_unref (t);
}
clutter_transition_set_from (t, G_TYPE_DOUBLE, 0.0);
clutter_transition_set_to (t, G_TYPE_DOUBLE, 0.25);
clutter_timeline_rewind (CLUTTER_TIMELINE (t));
clutter_timeline_start (CLUTTER_TIMELINE (t));
return CLUTTER_EVENT_STOP;
effect: Add PageTurnEffect A simple deformation effect that simulates a page curl. Ported from MxDeformPageTurn inside the Mx toolkit, written by Chris Lord.
2010-06-10 15:56:16 +00:00
}
static gboolean
on_leave (ClutterActor *actor,
ClutterEvent *event)
{
examples: Update drag and drop action code Use modern API and show idiomatic behaviour.
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ClutterTransition *t;
t = clutter_actor_get_transition (actor, "curl");
if (t == NULL)
{
t = clutter_property_transition_new ("@effects.curl.period");
clutter_timeline_set_duration (CLUTTER_TIMELINE (t), 250);
clutter_actor_add_transition (actor, "curl", t);
g_object_unref (t);
}
clutter_transition_set_from (t, G_TYPE_DOUBLE, 0.25);
clutter_transition_set_to (t, G_TYPE_DOUBLE, 0.0);
clutter_timeline_rewind (CLUTTER_TIMELINE (t));
clutter_timeline_start (CLUTTER_TIMELINE (t));
effect: Add PageTurnEffect A simple deformation effect that simulates a page curl. Ported from MxDeformPageTurn inside the Mx toolkit, written by Chris Lord.
2010-06-10 15:56:16 +00:00
examples: Update drag and drop action code Use modern API and show idiomatic behaviour.
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return CLUTTER_EVENT_STOP;
effect: Add PageTurnEffect A simple deformation effect that simulates a page curl. Ported from MxDeformPageTurn inside the Mx toolkit, written by Chris Lord.
2010-06-10 15:56:16 +00:00
}
action: Add DragAction, an action implementing drag capabilities DragAction is an Action sub-class that provides dragging capabilities to any actor. DragAction has: • drag-begin, drag-motion and drag-end signals, relaying the event information like coordinates, button and modifiers to user code; • drag-threshold property, for delaying the drag start by a given amount of pixels; • drag-handle property, to allow using other actors as the drag handle. • drag-axis property, to allow constraining the dragging to a specific axis. An interactive test demonstrating the various features is also provided.
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static void
on_drag_begin (ClutterDragAction *action,
ClutterActor *actor,
gfloat event_x,
gfloat event_y,
ClutterModifierType modifiers)
{
gboolean is_copy = (modifiers & CLUTTER_SHIFT_MASK) ? TRUE : FALSE;
ClutterActor *drag_handle = NULL;
examples: Update drag and drop action code Use modern API and show idiomatic behaviour.
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ClutterTransition *t;
action: Add DragAction, an action implementing drag capabilities DragAction is an Action sub-class that provides dragging capabilities to any actor. DragAction has: • drag-begin, drag-motion and drag-end signals, relaying the event information like coordinates, button and modifiers to user code; • drag-threshold property, for delaying the drag start by a given amount of pixels; • drag-handle property, to allow using other actors as the drag handle. • drag-axis property, to allow constraining the dragging to a specific axis. An interactive test demonstrating the various features is also provided.
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if (is_copy)
{
ClutterActor *stage = clutter_actor_get_stage (actor);
examples: Update drag and drop action code Use modern API and show idiomatic behaviour.
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drag_handle = clutter_actor_new ();
action: Add DragAction, an action implementing drag capabilities DragAction is an Action sub-class that provides dragging capabilities to any actor. DragAction has: • drag-begin, drag-motion and drag-end signals, relaying the event information like coordinates, button and modifiers to user code; • drag-threshold property, for delaying the drag start by a given amount of pixels; • drag-handle property, to allow using other actors as the drag handle. • drag-axis property, to allow constraining the dragging to a specific axis. An interactive test demonstrating the various features is also provided.
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clutter_actor_set_size (drag_handle, 48, 48);
examples: Update drag and drop action code Use modern API and show idiomatic behaviour.
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clutter_actor_set_background_color (drag_handle, CLUTTER_COLOR_DarkSkyBlue);
action: Add DragAction, an action implementing drag capabilities DragAction is an Action sub-class that provides dragging capabilities to any actor. DragAction has: • drag-begin, drag-motion and drag-end signals, relaying the event information like coordinates, button and modifiers to user code; • drag-threshold property, for delaying the drag start by a given amount of pixels; • drag-handle property, to allow using other actors as the drag handle. • drag-axis property, to allow constraining the dragging to a specific axis. An interactive test demonstrating the various features is also provided.
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examples: Update drag and drop action code Use modern API and show idiomatic behaviour.
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clutter_actor_add_child (stage, drag_handle);
action: Add DragAction, an action implementing drag capabilities DragAction is an Action sub-class that provides dragging capabilities to any actor. DragAction has: • drag-begin, drag-motion and drag-end signals, relaying the event information like coordinates, button and modifiers to user code; • drag-threshold property, for delaying the drag start by a given amount of pixels; • drag-handle property, to allow using other actors as the drag handle. • drag-axis property, to allow constraining the dragging to a specific axis. An interactive test demonstrating the various features is also provided.
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clutter_actor_set_position (drag_handle, event_x, event_y);
}
else
drag_handle = actor;
clutter_drag_action_set_drag_handle (action, drag_handle);
test-drag: Add desaturation effect Use a desaturation effect on the drag handle.
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/* fully desaturate the actor */
examples: Update drag and drop action code Use modern API and show idiomatic behaviour.
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t = clutter_actor_get_transition (actor, "disable");
if (t == NULL)
{
t = clutter_property_transition_new ("@effects.disable.factor");
clutter_timeline_set_duration (CLUTTER_TIMELINE (t), 250);
clutter_actor_add_transition (actor, "disable", t);
g_object_unref (t);
}
clutter_transition_set_from (t, G_TYPE_DOUBLE, 0.0);
clutter_transition_set_to (t, G_TYPE_DOUBLE, 1.0);
clutter_timeline_rewind (CLUTTER_TIMELINE (t));
clutter_timeline_start (CLUTTER_TIMELINE (t));
action: Add DragAction, an action implementing drag capabilities DragAction is an Action sub-class that provides dragging capabilities to any actor. DragAction has: • drag-begin, drag-motion and drag-end signals, relaying the event information like coordinates, button and modifiers to user code; • drag-threshold property, for delaying the drag start by a given amount of pixels; • drag-handle property, to allow using other actors as the drag handle. • drag-axis property, to allow constraining the dragging to a specific axis. An interactive test demonstrating the various features is also provided.
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}
static void
on_drag_end (ClutterDragAction *action,
ClutterActor *actor,
gfloat event_x,
gfloat event_y,
ClutterModifierType modifiers)
{
ClutterActor *drag_handle;
examples: Update drag and drop action code Use modern API and show idiomatic behaviour.
2012-05-24 11:08:58 +00:00
ClutterTransition *t;
action: Add DragAction, an action implementing drag capabilities DragAction is an Action sub-class that provides dragging capabilities to any actor. DragAction has: • drag-begin, drag-motion and drag-end signals, relaying the event information like coordinates, button and modifiers to user code; • drag-threshold property, for delaying the drag start by a given amount of pixels; • drag-handle property, to allow using other actors as the drag handle. • drag-axis property, to allow constraining the dragging to a specific axis. An interactive test demonstrating the various features is also provided.
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drag_handle = clutter_drag_action_get_drag_handle (action);
if (actor != drag_handle)
{
gfloat real_x, real_y;
ClutterActor *parent;
/* if we are dragging a copy we can destroy the copy now
* and animate the real actor to the drop coordinates,
* transformed in the parent's coordinate space
*/
examples: Update drag and drop action code Use modern API and show idiomatic behaviour.
2012-05-24 11:08:58 +00:00
clutter_actor_save_easing_state (drag_handle);
clutter_actor_set_easing_mode (drag_handle, CLUTTER_LINEAR);
clutter_actor_set_opacity (drag_handle, 0);
clutter_actor_restore_easing_state (drag_handle);
g_signal_connect (drag_handle, "transitions-completed",
G_CALLBACK (clutter_actor_destroy),
NULL);
action: Add DragAction, an action implementing drag capabilities DragAction is an Action sub-class that provides dragging capabilities to any actor. DragAction has: • drag-begin, drag-motion and drag-end signals, relaying the event information like coordinates, button and modifiers to user code; • drag-threshold property, for delaying the drag start by a given amount of pixels; • drag-handle property, to allow using other actors as the drag handle. • drag-axis property, to allow constraining the dragging to a specific axis. An interactive test demonstrating the various features is also provided.
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parent = clutter_actor_get_parent (actor);
clutter_actor_transform_stage_point (parent, event_x, event_y,
&real_x,
&real_y);
examples: Update drag and drop action code Use modern API and show idiomatic behaviour.
2012-05-24 11:08:58 +00:00
clutter_actor_save_easing_state (actor);
clutter_actor_set_easing_mode (actor, CLUTTER_EASE_OUT_CUBIC);
clutter_actor_set_position (actor, real_x, real_y);
clutter_actor_restore_easing_state (actor);
action: Add DragAction, an action implementing drag capabilities DragAction is an Action sub-class that provides dragging capabilities to any actor. DragAction has: • drag-begin, drag-motion and drag-end signals, relaying the event information like coordinates, button and modifiers to user code; • drag-threshold property, for delaying the drag start by a given amount of pixels; • drag-handle property, to allow using other actors as the drag handle. • drag-axis property, to allow constraining the dragging to a specific axis. An interactive test demonstrating the various features is also provided.
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}
examples: Update drag and drop action code Use modern API and show idiomatic behaviour.
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t = clutter_actor_get_transition (actor, "disable");
if (t == NULL)
{
t = clutter_property_transition_new ("@effects.disable.factor");
clutter_timeline_set_duration (CLUTTER_TIMELINE (t), 250);
clutter_actor_add_transition (actor, "disable", t);
g_object_unref (t);
}
clutter_transition_set_from (t, G_TYPE_DOUBLE, 1.0);
clutter_transition_set_to (t, G_TYPE_DOUBLE, 0.0);
clutter_timeline_rewind (CLUTTER_TIMELINE (t));
clutter_timeline_start (CLUTTER_TIMELINE (t));
action: Add DragAction, an action implementing drag capabilities DragAction is an Action sub-class that provides dragging capabilities to any actor. DragAction has: • drag-begin, drag-motion and drag-end signals, relaying the event information like coordinates, button and modifiers to user code; • drag-threshold property, for delaying the drag start by a given amount of pixels; • drag-handle property, to allow using other actors as the drag handle. • drag-axis property, to allow constraining the dragging to a specific axis. An interactive test demonstrating the various features is also provided.
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}
static ClutterDragAxis
get_drag_axis (const gchar *str)
{
if (str == NULL || *str == '\0')
return CLUTTER_DRAG_AXIS_NONE;
if (*str == 'x' || *str == 'X')
return CLUTTER_DRAG_X_AXIS;
if (*str == 'y' || *str == 'Y')
return CLUTTER_DRAG_Y_AXIS;
g_warn_if_reached ();
return CLUTTER_DRAG_AXIS_NONE;
}
static gchar *drag_axis = NULL;
drag-action: Added x-drag-threshold and y-drag-threshold properties *** This is an API change *** Replaced the original drag-threshold property with two separate horizontal (x-drag-threshold) and vertical (y-drag-threshold) thresholds. It is some times necessary to have different drag thresholds for the horizontal and vertical axes. For example, when a draggable actor is inside a horizontal scrolling area, only vertical movement must begin dragging. That can be achieved by setting the x-drag-threshold to G_MAXUINT while y-drag-threshold is something usual, say, 20 pixels. This is different than drag axis, because after the threshold has been cleared by the pointer, the draggable actor can be dragged along both axes (if allowed by the drag-axis property). http://bugzilla.clutter-project.org/show_bug.cgi?id=2291 Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>
2010-09-03 17:00:40 +00:00
static gint x_drag_threshold = 0;
static gint y_drag_threshold = 0;
action: Add DragAction, an action implementing drag capabilities DragAction is an Action sub-class that provides dragging capabilities to any actor. DragAction has: • drag-begin, drag-motion and drag-end signals, relaying the event information like coordinates, button and modifiers to user code; • drag-threshold property, for delaying the drag start by a given amount of pixels; • drag-handle property, to allow using other actors as the drag handle. • drag-axis property, to allow constraining the dragging to a specific axis. An interactive test demonstrating the various features is also provided.
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static GOptionEntry entries[] = {
{
drag-action: Added x-drag-threshold and y-drag-threshold properties *** This is an API change *** Replaced the original drag-threshold property with two separate horizontal (x-drag-threshold) and vertical (y-drag-threshold) thresholds. It is some times necessary to have different drag thresholds for the horizontal and vertical axes. For example, when a draggable actor is inside a horizontal scrolling area, only vertical movement must begin dragging. That can be achieved by setting the x-drag-threshold to G_MAXUINT while y-drag-threshold is something usual, say, 20 pixels. This is different than drag axis, because after the threshold has been cleared by the pointer, the draggable actor can be dragged along both axes (if allowed by the drag-axis property). http://bugzilla.clutter-project.org/show_bug.cgi?id=2291 Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>
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"x-threshold", 'x',
action: Add DragAction, an action implementing drag capabilities DragAction is an Action sub-class that provides dragging capabilities to any actor. DragAction has: • drag-begin, drag-motion and drag-end signals, relaying the event information like coordinates, button and modifiers to user code; • drag-threshold property, for delaying the drag start by a given amount of pixels; • drag-handle property, to allow using other actors as the drag handle. • drag-axis property, to allow constraining the dragging to a specific axis. An interactive test demonstrating the various features is also provided.
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0,
G_OPTION_ARG_INT,
drag-action: Added x-drag-threshold and y-drag-threshold properties *** This is an API change *** Replaced the original drag-threshold property with two separate horizontal (x-drag-threshold) and vertical (y-drag-threshold) thresholds. It is some times necessary to have different drag thresholds for the horizontal and vertical axes. For example, when a draggable actor is inside a horizontal scrolling area, only vertical movement must begin dragging. That can be achieved by setting the x-drag-threshold to G_MAXUINT while y-drag-threshold is something usual, say, 20 pixels. This is different than drag axis, because after the threshold has been cleared by the pointer, the draggable actor can be dragged along both axes (if allowed by the drag-axis property). http://bugzilla.clutter-project.org/show_bug.cgi?id=2291 Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>
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&x_drag_threshold,
"Set the horizontal drag threshold", "PIXELS"
},
{
"y-threshold", 'y',
0,
G_OPTION_ARG_INT,
&y_drag_threshold,
"Set the vertical drag threshold", "PIXELS"
action: Add DragAction, an action implementing drag capabilities DragAction is an Action sub-class that provides dragging capabilities to any actor. DragAction has: • drag-begin, drag-motion and drag-end signals, relaying the event information like coordinates, button and modifiers to user code; • drag-threshold property, for delaying the drag start by a given amount of pixels; • drag-handle property, to allow using other actors as the drag handle. • drag-axis property, to allow constraining the dragging to a specific axis. An interactive test demonstrating the various features is also provided.
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},
{
"axis", 'a',
0,
G_OPTION_ARG_STRING,
&drag_axis,
"Set the drag axis", "AXIS"
},
{ NULL }
};
Move examples from tests/interactive to a new top-level The example code that is meant to be XIncluded into the API reference should not be part of the interactive test suite: it's code that it is meant to be used as a reference implementation - whereas the interactive test suite should be allowed to be lean and test behaviour even in nasty ways. In short: the test suite should not be the place where we show off idiomatic code for educational purposes.
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int
main (int argc, char *argv[])
action: Add DragAction, an action implementing drag capabilities DragAction is an Action sub-class that provides dragging capabilities to any actor. DragAction has: • drag-begin, drag-motion and drag-end signals, relaying the event information like coordinates, button and modifiers to user code; • drag-threshold property, for delaying the drag start by a given amount of pixels; • drag-handle property, to allow using other actors as the drag handle. • drag-axis property, to allow constraining the dragging to a specific axis. An interactive test demonstrating the various features is also provided.
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{
ClutterActor *stage, *handle;
ClutterAction *action;
GError *error;
error = NULL;
tests: Check return value of clutter_init_with_args instead of error Some of the tests were ignoring the return value of clutter_init_with_args and instead they would recognise an error by seeing whether the GError parameter was set. This patch changes it to check the return value so that it won't give a warning now that G_GNUC_WARN_UNUSED_RESULT is on that function. http://bugzilla.clutter-project.org/show_bug.cgi?id=2574
2011-02-22 12:53:15 +00:00
if (clutter_init_with_args (&argc, &argv,
"test-drag",
entries,
NULL,
&error) != CLUTTER_INIT_SUCCESS)
action: Add DragAction, an action implementing drag capabilities DragAction is an Action sub-class that provides dragging capabilities to any actor. DragAction has: • drag-begin, drag-motion and drag-end signals, relaying the event information like coordinates, button and modifiers to user code; • drag-threshold property, for delaying the drag start by a given amount of pixels; • drag-handle property, to allow using other actors as the drag handle. • drag-axis property, to allow constraining the dragging to a specific axis. An interactive test demonstrating the various features is also provided.
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{
examples: Update drag and drop action code Use modern API and show idiomatic behaviour.
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g_print ("Unable to run drag-action: %s\n", error->message);
action: Add DragAction, an action implementing drag capabilities DragAction is an Action sub-class that provides dragging capabilities to any actor. DragAction has: • drag-begin, drag-motion and drag-end signals, relaying the event information like coordinates, button and modifiers to user code; • drag-threshold property, for delaying the drag start by a given amount of pixels; • drag-handle property, to allow using other actors as the drag handle. • drag-axis property, to allow constraining the dragging to a specific axis. An interactive test demonstrating the various features is also provided.
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g_error_free (error);
return EXIT_FAILURE;
}
stage = clutter_stage_new ();
clutter_stage_set_title (CLUTTER_STAGE (stage), "Drag Test");
clutter_actor_set_size (stage, 800, 600);
g_signal_connect (stage, "destroy", G_CALLBACK (clutter_main_quit), NULL);
examples: Update drag and drop action code Use modern API and show idiomatic behaviour.
2012-05-24 11:08:58 +00:00
handle = clutter_actor_new ();
clutter_actor_set_background_color (handle, CLUTTER_COLOR_SkyBlue);
action: Add DragAction, an action implementing drag capabilities DragAction is an Action sub-class that provides dragging capabilities to any actor. DragAction has: • drag-begin, drag-motion and drag-end signals, relaying the event information like coordinates, button and modifiers to user code; • drag-threshold property, for delaying the drag start by a given amount of pixels; • drag-handle property, to allow using other actors as the drag handle. • drag-axis property, to allow constraining the dragging to a specific axis. An interactive test demonstrating the various features is also provided.
2010-05-12 11:00:33 +00:00
clutter_actor_set_size (handle, 128, 128);
clutter_actor_set_position (handle, (800 - 128) / 2, (600 - 128) / 2);
clutter_actor_set_reactive (handle, TRUE);
examples: Update drag and drop action code Use modern API and show idiomatic behaviour.
2012-05-24 11:08:58 +00:00
clutter_actor_add_child (stage, handle);
effect: Add PageTurnEffect A simple deformation effect that simulates a page curl. Ported from MxDeformPageTurn inside the Mx toolkit, written by Chris Lord.
2010-06-10 15:56:16 +00:00
g_signal_connect (handle, "enter-event", G_CALLBACK (on_enter), NULL);
g_signal_connect (handle, "leave-event", G_CALLBACK (on_leave), NULL);
action: Add DragAction, an action implementing drag capabilities DragAction is an Action sub-class that provides dragging capabilities to any actor. DragAction has: • drag-begin, drag-motion and drag-end signals, relaying the event information like coordinates, button and modifiers to user code; • drag-threshold property, for delaying the drag start by a given amount of pixels; • drag-handle property, to allow using other actors as the drag handle. • drag-axis property, to allow constraining the dragging to a specific axis. An interactive test demonstrating the various features is also provided.
2010-05-12 11:00:33 +00:00
action = clutter_drag_action_new ();
clutter_drag_action_set_drag_threshold (CLUTTER_DRAG_ACTION (action),
drag-action: Added x-drag-threshold and y-drag-threshold properties *** This is an API change *** Replaced the original drag-threshold property with two separate horizontal (x-drag-threshold) and vertical (y-drag-threshold) thresholds. It is some times necessary to have different drag thresholds for the horizontal and vertical axes. For example, when a draggable actor is inside a horizontal scrolling area, only vertical movement must begin dragging. That can be achieved by setting the x-drag-threshold to G_MAXUINT while y-drag-threshold is something usual, say, 20 pixels. This is different than drag axis, because after the threshold has been cleared by the pointer, the draggable actor can be dragged along both axes (if allowed by the drag-axis property). http://bugzilla.clutter-project.org/show_bug.cgi?id=2291 Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>
2010-09-03 17:00:40 +00:00
x_drag_threshold,
y_drag_threshold);
action: Add DragAction, an action implementing drag capabilities DragAction is an Action sub-class that provides dragging capabilities to any actor. DragAction has: • drag-begin, drag-motion and drag-end signals, relaying the event information like coordinates, button and modifiers to user code; • drag-threshold property, for delaying the drag start by a given amount of pixels; • drag-handle property, to allow using other actors as the drag handle. • drag-axis property, to allow constraining the dragging to a specific axis. An interactive test demonstrating the various features is also provided.
2010-05-12 11:00:33 +00:00
clutter_drag_action_set_drag_axis (CLUTTER_DRAG_ACTION (action),
get_drag_axis (drag_axis));
g_signal_connect (action, "drag-begin", G_CALLBACK (on_drag_begin), NULL);
g_signal_connect (action, "drag-end", G_CALLBACK (on_drag_end), NULL);
clutter_actor_add_action (handle, action);
test-drag: Add desaturation effect Use a desaturation effect on the drag handle.
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clutter_actor_add_effect_with_name (handle, "disable", clutter_desaturate_effect_new (0.0));
test-drag: Fix the page curl angle
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clutter_actor_add_effect_with_name (handle, "curl", clutter_page_turn_effect_new (0.0, 45.0, 12.0));
test-drag: Add desaturation effect Use a desaturation effect on the drag handle.
2010-06-03 14:20:17 +00:00
action: Add DragAction, an action implementing drag capabilities DragAction is an Action sub-class that provides dragging capabilities to any actor. DragAction has: • drag-begin, drag-motion and drag-end signals, relaying the event information like coordinates, button and modifiers to user code; • drag-threshold property, for delaying the drag start by a given amount of pixels; • drag-handle property, to allow using other actors as the drag handle. • drag-axis property, to allow constraining the dragging to a specific axis. An interactive test demonstrating the various features is also provided.
2010-05-12 11:00:33 +00:00
clutter_actor_show (stage);
clutter_main ();
return EXIT_SUCCESS;
}
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