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test-constraints: Clean up the example

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Add some comments to detail what are we doing and why.
This commit is contained in:
Emmanuele Bassi 2011-09-02 15:36:40 +01:00
parent 0d6208f36e
commit bce27e45b0
1 changed files with 48 additions and 11 deletions
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59
tests/interactive/test-constraints.c
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@ -22,6 +22,11 @@ static const gchar *colors[N_RECTS] = {
"#729fcf", "#3465a4", "#204a87", "#729fcf", "#3465a4", "#204a87",
"#ef2929", "#cc0000", "#a40000" "#ef2929", "#cc0000", "#a40000"
}; };
static const gchar *names[N_RECTS] = {
"North West", "North", "North East",
"West", "Center", "East",
"South West", "South", "South East"
};
static const gchar *desaturare_glsl_shader = static const gchar *desaturare_glsl_shader =
"uniform sampler2D tex;\n" "uniform sampler2D tex;\n"
@ -53,6 +58,10 @@ on_button_release (ClutterActor *actor,
gfloat north_offset, south_offset; gfloat north_offset, south_offset;
gfloat west_offset, east_offset; gfloat west_offset, east_offset;
/* expand the 8 rectangles by animating the offset of the
* bind constraints
*/
north_offset = (clutter_actor_get_height (rects[Center]) + V_PADDING) north_offset = (clutter_actor_get_height (rects[Center]) + V_PADDING)
* -1.0f; * -1.0f;
south_offset = (clutter_actor_get_height (rects[Center]) + V_PADDING); south_offset = (clutter_actor_get_height (rects[Center]) + V_PADDING);
@ -61,46 +70,58 @@ on_button_release (ClutterActor *actor,
* -1.0f; * -1.0f;
east_offset = (clutter_actor_get_width (rects[Center]) + H_PADDING); east_offset = (clutter_actor_get_width (rects[Center]) + H_PADDING);
clutter_actor_animate (rects[NorthWest], CLUTTER_EASE_OUT_CUBIC, 500, clutter_actor_animate (rects[NorthWest], CLUTTER_EASE_OUT_EXPO, 500,
"opacity", 255, "opacity", 255,
"@constraints.x-bind.offset", west_offset, "@constraints.x-bind.offset", west_offset,
"@constraints.y-bind.offset", north_offset, "@constraints.y-bind.offset", north_offset,
"reactive", TRUE,
NULL); NULL);
clutter_actor_animate (rects[North], CLUTTER_EASE_OUT_CUBIC, 500, clutter_actor_animate (rects[North], CLUTTER_EASE_OUT_EXPO, 500,
"opacity", 255, "opacity", 255,
"@constraints.y-bind.offset", north_offset, "@constraints.y-bind.offset", north_offset,
"reactive", TRUE,
NULL); NULL);
clutter_actor_animate (rects[NorthEast], CLUTTER_EASE_OUT_CUBIC, 500, clutter_actor_animate (rects[NorthEast], CLUTTER_EASE_OUT_EXPO, 500,
"opacity", 255, "opacity", 255,
"@constraints.x-bind.offset", east_offset, "@constraints.x-bind.offset", east_offset,
"@constraints.y-bind.offset", north_offset, "@constraints.y-bind.offset", north_offset,
"reactive", TRUE,
NULL); NULL);
clutter_actor_animate (rects[West], CLUTTER_EASE_OUT_CUBIC, 500, clutter_actor_animate (rects[West], CLUTTER_EASE_OUT_EXPO, 500,
"opacity", 255, "opacity", 255,
"@constraints.x-bind.offset", west_offset, "@constraints.x-bind.offset", west_offset,
"reactive", TRUE,
NULL); NULL);
/* turn on the desaturation effect and set the center
* rectangle not reactive
*/
clutter_actor_animate (rects[Center], CLUTTER_LINEAR, 500, clutter_actor_animate (rects[Center], CLUTTER_LINEAR, 500,
"@effects.desaturate.enabled", TRUE, "@effects.desaturate.enabled", TRUE,
"reactive", FALSE,
NULL); NULL);
clutter_actor_animate (rects[East], CLUTTER_EASE_OUT_CUBIC, 500, clutter_actor_animate (rects[East], CLUTTER_EASE_OUT_EXPO, 500,
"opacity", 255, "opacity", 255,
"@constraints.x-bind.offset", east_offset, "@constraints.x-bind.offset", east_offset,
"reactive", TRUE,
NULL); NULL);
clutter_actor_animate (rects[SouthWest], CLUTTER_EASE_OUT_CUBIC, 500, clutter_actor_animate (rects[SouthWest], CLUTTER_EASE_OUT_EXPO, 500,
"opacity", 255, "opacity", 255,
"@constraints.x-bind.offset", west_offset, "@constraints.x-bind.offset", west_offset,
"@constraints.y-bind.offset", south_offset, "@constraints.y-bind.offset", south_offset,
"reactive", TRUE,
NULL); NULL);
clutter_actor_animate (rects[South], CLUTTER_EASE_OUT_CUBIC, 500, clutter_actor_animate (rects[South], CLUTTER_EASE_OUT_EXPO, 500,
"opacity", 255, "opacity", 255,
"@constraints.y-bind.offset", south_offset, "@constraints.y-bind.offset", south_offset,
"reactive", TRUE,
NULL); NULL);
clutter_actor_animate (rects[SouthEast], CLUTTER_EASE_OUT_CUBIC, 500, clutter_actor_animate (rects[SouthEast], CLUTTER_EASE_OUT_EXPO, 500,
"opacity", 255, "opacity", 255,
"@constraints.x-bind.offset", east_offset, "@constraints.x-bind.offset", east_offset,
"@constraints.y-bind.offset", south_offset, "@constraints.y-bind.offset", south_offset,
"reactive", TRUE,
NULL); NULL);
} }
else else
@ -109,6 +130,7 @@ on_button_release (ClutterActor *actor,
clutter_actor_animate (rects[Center], CLUTTER_LINEAR, 500, clutter_actor_animate (rects[Center], CLUTTER_LINEAR, 500,
"@effects.desaturate.enabled", FALSE, "@effects.desaturate.enabled", FALSE,
"reactive", TRUE,
NULL); NULL);
for (i = NorthWest; i < N_RECTS; i++) for (i = NorthWest; i < N_RECTS; i++)
@ -116,16 +138,20 @@ on_button_release (ClutterActor *actor,
if (i == Center) if (i == Center)
continue; continue;
clutter_actor_animate (rects[i], CLUTTER_EASE_OUT_CUBIC, 500, /* put the 8 rectangles back into their initial state */
clutter_actor_animate (rects[i], CLUTTER_EASE_OUT_EXPO, 500,
"opacity", 0, "opacity", 0,
"@constraints.x-bind.offset", 0.0f, "@constraints.x-bind.offset", 0.0f,
"@constraints.y-bind.offset", 0.0f, "@constraints.y-bind.offset", 0.0f,
"reactive", FALSE,
NULL); NULL);
} }
} }
is_expanded = !is_expanded; is_expanded = !is_expanded;
g_print ("Selected: [%s]\n", clutter_actor_get_name (actor));
return TRUE; return TRUE;
} }
@ -147,7 +173,7 @@ test_constraints_main (int argc, char *argv[])
clutter_stage_set_user_resizable (CLUTTER_STAGE (stage), TRUE); clutter_stage_set_user_resizable (CLUTTER_STAGE (stage), TRUE);
clutter_actor_set_size (stage, 800, 600); clutter_actor_set_size (stage, 800, 600);
/* main rect */ /* main rectangle */
clutter_color_from_string (&rect_color, "#3465a4"); clutter_color_from_string (&rect_color, "#3465a4");
rect = clutter_rectangle_new (); rect = clutter_rectangle_new ();
g_signal_connect (rect, "button-release-event", g_signal_connect (rect, "button-release-event",
@ -156,8 +182,10 @@ test_constraints_main (int argc, char *argv[])
clutter_rectangle_set_color (CLUTTER_RECTANGLE (rect), &rect_color); clutter_rectangle_set_color (CLUTTER_RECTANGLE (rect), &rect_color);
clutter_actor_set_size (rect, RECT_SIZE, RECT_SIZE); clutter_actor_set_size (rect, RECT_SIZE, RECT_SIZE);
clutter_actor_set_reactive (rect, TRUE); clutter_actor_set_reactive (rect, TRUE);
clutter_actor_set_name (rect, names[Center]);
clutter_container_add_actor (CLUTTER_CONTAINER (stage), rect); clutter_container_add_actor (CLUTTER_CONTAINER (stage), rect);
/* align the center rectangle to the center of the stage */
constraint = clutter_align_constraint_new (stage, CLUTTER_ALIGN_X_AXIS, 0.5); constraint = clutter_align_constraint_new (stage, CLUTTER_ALIGN_X_AXIS, 0.5);
clutter_actor_add_constraint_with_name (rect, "x-align", constraint); clutter_actor_add_constraint_with_name (rect, "x-align", constraint);
@ -175,12 +203,16 @@ test_constraints_main (int argc, char *argv[])
clutter_shader_effect_set_uniform (CLUTTER_SHADER_EFFECT (effect), clutter_shader_effect_set_uniform (CLUTTER_SHADER_EFFECT (effect),
"tex", G_TYPE_INT, 1, 0); "tex", G_TYPE_INT, 1, 0);
clutter_shader_effect_set_uniform (CLUTTER_SHADER_EFFECT (effect), clutter_shader_effect_set_uniform (CLUTTER_SHADER_EFFECT (effect),
"factor", G_TYPE_FLOAT, 1, 0.85); "factor", G_TYPE_FLOAT, 1, 0.66);
clutter_actor_meta_set_enabled (CLUTTER_ACTOR_META (effect), FALSE); clutter_actor_meta_set_enabled (CLUTTER_ACTOR_META (effect), FALSE);
clutter_actor_add_effect_with_name (rect, "desaturate", effect); clutter_actor_add_effect_with_name (rect, "desaturate", effect);
rects[Center] = rect; rects[Center] = rect;
/* build the other rectangles, and bind their position and size
* to the center rectangle. we are going to animate the offset
* of the BindConstraints
*/
for (i = 0; i < N_RECTS; i++) for (i = 0; i < N_RECTS; i++)
{ {
if (i == Center) if (i == Center)
@ -190,6 +222,7 @@ test_constraints_main (int argc, char *argv[])
rect = clutter_rectangle_new (); rect = clutter_rectangle_new ();
clutter_rectangle_set_color (CLUTTER_RECTANGLE (rect), &rect_color); clutter_rectangle_set_color (CLUTTER_RECTANGLE (rect), &rect_color);
clutter_actor_set_opacity (rect, 0); clutter_actor_set_opacity (rect, 0);
clutter_actor_set_name (rect, names[i]);
clutter_container_add_actor (CLUTTER_CONTAINER (stage), rect); clutter_container_add_actor (CLUTTER_CONTAINER (stage), rect);
constraint = clutter_bind_constraint_new (rects[Center], CLUTTER_BIND_X, 0.0); constraint = clutter_bind_constraint_new (rects[Center], CLUTTER_BIND_X, 0.0);
@ -201,6 +234,10 @@ test_constraints_main (int argc, char *argv[])
constraint = clutter_bind_constraint_new (rects[Center], CLUTTER_BIND_SIZE, 0.0); constraint = clutter_bind_constraint_new (rects[Center], CLUTTER_BIND_SIZE, 0.0);
clutter_actor_add_constraint_with_name (rect, "size-bind", constraint); clutter_actor_add_constraint_with_name (rect, "size-bind", constraint);
g_signal_connect (rect, "button-release-event",
G_CALLBACK (on_button_release),
NULL);
rects[i] = rect; rects[i] = rect;
} }