[clutter/wip/actor-content: 15/33] Add ClutterRGBA, a color content
- From: Emmanuele Bassi <ebassi src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [clutter/wip/actor-content: 15/33] Add ClutterRGBA, a color content
- Date: Wed, 18 May 2011 11:11:40 +0000 (UTC)
commit 675022965570263de792a405c5fce684e381fd65
Author: Emmanuele Bassi <ebassi linux intel com>
Date: Mon Nov 22 12:50:30 2010 +0000
Add ClutterRGBA, a color content
clutter/Makefile.am | 2 +
clutter/clutter-rgba.c | 479 +++++++++++++++++++++++++++++++++
clutter/clutter-rgba.h | 55 ++++
clutter/clutter.h | 1 +
tests/interactive/Makefile.am | 3 +-
tests/interactive/test-rgba-content.c | 78 ++++++
6 files changed, 617 insertions(+), 1 deletions(-)
---
diff --git a/clutter/Makefile.am b/clutter/Makefile.am
index a69d70c..c44fd7b 100644
--- a/clutter/Makefile.am
+++ b/clutter/Makefile.am
@@ -121,6 +121,7 @@ source_h = \
$(srcdir)/clutter-path-constraint.h \
$(srcdir)/clutter-path.h \
$(srcdir)/clutter-rectangle.h \
+ $(srcdir)/clutter-rgba.h \
$(srcdir)/clutter-score.h \
$(srcdir)/clutter-script.h \
$(srcdir)/clutter-scriptable.h \
@@ -207,6 +208,7 @@ source_c = \
$(srcdir)/clutter-path-constraint.c \
$(srcdir)/clutter-path.c \
$(srcdir)/clutter-rectangle.c \
+ $(srcdir)/clutter-rgba.c \
$(srcdir)/clutter-score.c \
$(srcdir)/clutter-script.c \
$(srcdir)/clutter-script-parser.c \
diff --git a/clutter/clutter-rgba.c b/clutter/clutter-rgba.c
new file mode 100644
index 0000000..d5c79fe
--- /dev/null
+++ b/clutter/clutter-rgba.c
@@ -0,0 +1,479 @@
+/**
+ * SECTION:clutter-rgba
+ * @Title: ClutterRGBA
+ * @Short_Description: A solid color
+ *
+ * #ClutterRGBA is an object implementing the #ClutterContent interface. It
+ * can be used to paint a solid color covering the same area as the allocation
+ * of the #ClutterActor<!-- -->s that use it as their content.
+ *
+ * #ClutterRGBA is available since Clutter 1.6.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "clutter-rgba.h"
+
+#include "clutter-actor.h"
+#include "clutter-color.h"
+#include "clutter-content.h"
+#include "clutter-debug.h"
+#include "clutter-private.h"
+
+typedef struct _ClutterRGBAClass ClutterRGBAClass;
+
+struct _ClutterRGBA
+{
+ GObject parent_instance;
+
+ gdouble red;
+ gdouble green;
+ gdouble blue;
+ gdouble alpha;
+};
+
+struct _ClutterRGBAClass
+{
+ GObjectClass parent_class;
+};
+
+enum
+{
+ PROP_0,
+
+ PROP_RED,
+ PROP_GREEN,
+ PROP_BLUE,
+ PROP_ALPHA,
+
+ PROP_COLOR,
+
+ PROP_STRING,
+
+ PROP_LAST
+};
+
+static void clutter_content_iface_init (ClutterContentIface *iface);
+
+static GParamSpec *obj_props[PROP_LAST] = { NULL, };
+
+static const ClutterColor default_color = { 0, 0, 0, 0 };
+
+G_DEFINE_TYPE_WITH_CODE (ClutterRGBA, clutter_rgba, G_TYPE_OBJECT,
+ G_IMPLEMENT_INTERFACE (CLUTTER_TYPE_CONTENT,
+ clutter_content_iface_init));
+
+static gboolean
+clutter_rgba_setup_material (ClutterContent *content,
+ ClutterActor *actor)
+{
+ ClutterRGBA *self = CLUTTER_RGBA (content);
+ gfloat paint_opacity;
+
+ paint_opacity = ((float) clutter_actor_get_paint_opacity (actor) / 255.0f)
+ * self->alpha;
+
+ cogl_set_source_color4f (self->red,
+ self->green,
+ self->blue,
+ CLAMP (paint_opacity, 0.0, 1.0));
+
+ return TRUE;
+}
+
+static void
+clutter_content_iface_init (ClutterContentIface *iface)
+{
+ iface->setup_material = clutter_rgba_setup_material;
+}
+
+static void
+clutter_rgba_set_property (GObject *gobject,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ ClutterRGBA *self = CLUTTER_RGBA (gobject);
+
+ switch (prop_id)
+ {
+ case PROP_RED:
+ clutter_rgba_set_red (self, g_value_get_double (value));
+ break;
+
+ case PROP_GREEN:
+ clutter_rgba_set_green (self, g_value_get_double (value));
+ break;
+
+ case PROP_BLUE:
+ clutter_rgba_set_blue (self, g_value_get_double (value));
+ break;
+
+ case PROP_ALPHA:
+ clutter_rgba_set_alpha (self, g_value_get_double (value));
+ break;
+
+ case PROP_COLOR:
+ clutter_rgba_set_color (self, clutter_value_get_color (value));
+ break;
+
+ case PROP_STRING:
+ clutter_rgba_set_string (self, g_value_get_string (value));
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
+ }
+}
+
+static void
+clutter_rgba_get_property (GObject *gobject,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ ClutterRGBA *self = CLUTTER_RGBA (gobject);
+
+ switch (prop_id)
+ {
+ case PROP_RED:
+ g_value_set_double (value, self->red);
+ break;
+
+ case PROP_GREEN:
+ g_value_set_double (value, self->green);
+ break;
+
+ case PROP_BLUE:
+ g_value_set_double (value, self->blue);
+ break;
+
+ case PROP_ALPHA:
+ g_value_set_double (value, self->alpha);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
+ }
+}
+
+static void
+clutter_rgba_class_init (ClutterRGBAClass *klass)
+{
+ GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+
+ /**
+ * ClutterRGBA:red:
+ *
+ * The value of the red channel.
+ *
+ * Since: 1.6
+ */
+ obj_props[PROP_RED] =
+ g_param_spec_double ("red",
+ P_("Red"),
+ P_("The red value"),
+ 0.0, 1.0,
+ 0.0,
+ CLUTTER_PARAM_READWRITE);
+
+ /**
+ * ClutterRGBA:green:
+ *
+ * The value of the green channel.
+ *
+ * Since: 1.6
+ */
+ obj_props[PROP_GREEN] =
+ g_param_spec_double ("green",
+ P_("Green"),
+ P_("The green value"),
+ 0.0, 1.0,
+ 0.0,
+ CLUTTER_PARAM_READWRITE);
+
+ /**
+ * ClutterRGBA:blue:
+ *
+ * The value of the blue channel.
+ *
+ * Since: 1.6
+ */
+ obj_props[PROP_BLUE] =
+ g_param_spec_double ("blue",
+ P_("Blue"),
+ P_("The blue value"),
+ 0.0, 1.0,
+ 0.0,
+ CLUTTER_PARAM_READWRITE);
+
+ /**
+ * ClutterRGBA:alpha:
+ *
+ * The value of the alpha channel.
+ *
+ * Since: 1.6
+ */
+ obj_props[PROP_ALPHA] =
+ g_param_spec_double ("alpha",
+ P_("Alpha"),
+ P_("The alpha value"),
+ 0.0, 1.0,
+ 0.0,
+ CLUTTER_PARAM_READWRITE);
+
+ /**
+ * ClutterRGBA:color:
+ *
+ * Sets all the channels of a #ClutterRGBA using a #ClutterColor.
+ *
+ * Since: 1.6
+ */
+ obj_props[PROP_COLOR] =
+ clutter_param_spec_color ("color",
+ P_("Color"),
+ P_("The full color, as a ClutterColor"),
+ &default_color,
+ CLUTTER_PARAM_WRITABLE);
+
+ /**
+ * ClutterRGBA:string:
+ *
+ * Sets all the channels of a #ClutterRGBA using a string that
+ * can be parsed by clutter_color_from_string().
+ *
+ * Since: 1.6
+ */
+ obj_props[PROP_STRING] =
+ g_param_spec_string ("string",
+ P_("String"),
+ P_("The full color, as a string"),
+ NULL,
+ CLUTTER_PARAM_WRITABLE);
+
+ gobject_class->set_property = clutter_rgba_set_property;
+ gobject_class->get_property = clutter_rgba_get_property;
+ g_object_class_install_properties (gobject_class, PROP_LAST, obj_props);
+}
+
+static void
+clutter_rgba_init (ClutterRGBA *self)
+{
+}
+
+/**
+ * clutter_rgba_new:
+ * @red: the value of the red channel, between 0 and 1
+ * @green: the value of the green channel, between 0 and 1
+ * @blue: the value of the blue channel, between 0 and 1
+ * @alpha: the value of the alpha channel, between 0 and 1
+ *
+ * Creates a new #ClutterRGBA object for the given color. This
+ * object can be used to paint a solid color inside a #ClutterActor,
+ * by calling clutter_actor_set_content().
+ *
+ * Return value: (transfer full): the newly created #ClutterRGBA instance.
+ *
+ * Since: 1.6
+ */
+ClutterContent *
+clutter_rgba_new (gdouble red,
+ gdouble green,
+ gdouble blue,
+ gdouble alpha)
+{
+ return g_object_new (CLUTTER_TYPE_RGBA,
+ "red", red,
+ "green", green,
+ "blue", blue,
+ "alpha", alpha,
+ NULL);
+}
+
+/**
+ * clutter_rgba_new_from_color:
+ * @color: a #ClutterColor
+ *
+ * Creates a new #ClutterRGBA instance, using @color as the source
+ * for the color definition.
+ *
+ * Return value: (transfer full): the newly created #ClutterRGBA instance.
+ *
+ * Since: 1.6
+ */
+ClutterContent *
+clutter_rgba_new_from_color (const ClutterColor *color)
+{
+ return g_object_new (CLUTTER_TYPE_RGBA,
+ "color", color,
+ NULL);
+}
+
+/**
+ * clutter_rgba_new_from_string:
+ * @string: a color definition, as parseable by clutter_color_from_string()
+ *
+ * Creates a new #ClutterRGBA instance, using the color definition contained
+ * inside the passed @string.
+ *
+ * Return value: (transfer full): the newly created #ClutterRGBA instance
+ *
+ * Since: 1.6
+ */
+ClutterContent *
+clutter_rgba_new_from_string (const gchar *string)
+{
+ return g_object_new (CLUTTER_TYPE_RGBA,
+ "string", string,
+ NULL);
+}
+
+void
+clutter_rgba_set_red (ClutterRGBA *self,
+ gdouble red)
+{
+ g_return_if_fail (CLUTTER_IS_RGBA (self));
+ g_return_if_fail (red >= 0.0 && red <= 1.0);
+
+ if (self->red == red)
+ return;
+
+ self->red = red;
+
+ clutter_content_invalidate (CLUTTER_CONTENT (self));
+ g_object_notify_by_pspec (G_OBJECT (self), obj_props[PROP_RED]);
+}
+
+gdouble
+clutter_rgba_get_red (ClutterRGBA *self)
+{
+ g_return_val_if_fail (CLUTTER_IS_RGBA (self), 0.0);
+
+ return self->red;
+}
+
+void
+clutter_rgba_set_green (ClutterRGBA *self,
+ gdouble green)
+{
+ g_return_if_fail (CLUTTER_IS_RGBA (self));
+ g_return_if_fail (green >= 0.0 && green <= 1.0);
+
+ if (self->green == green)
+ return;
+
+ self->green = green;
+
+ clutter_content_invalidate (CLUTTER_CONTENT (self));
+ g_object_notify_by_pspec (G_OBJECT (self), obj_props[PROP_GREEN]);
+}
+
+gdouble
+clutter_rgba_get_green (ClutterRGBA *self)
+{
+ g_return_val_if_fail (CLUTTER_IS_RGBA (self), 0.0);
+
+ return self->green;
+}
+
+void
+clutter_rgba_set_blue (ClutterRGBA *self,
+ gdouble blue)
+{
+ g_return_if_fail (CLUTTER_IS_RGBA (self));
+ g_return_if_fail (blue >= 0.0 && blue <= 1.0);
+
+ if (self->blue == blue)
+ return;
+
+ self->blue = blue;
+
+ clutter_content_invalidate (CLUTTER_CONTENT (self));
+ g_object_notify_by_pspec (G_OBJECT (self), obj_props[PROP_BLUE]);
+}
+
+gdouble
+clutter_rgba_get_blue (ClutterRGBA *self)
+{
+ g_return_val_if_fail (CLUTTER_IS_RGBA (self), 0.0);
+
+ return self->blue;
+}
+
+void
+clutter_rgba_set_alpha (ClutterRGBA *self,
+ gdouble alpha)
+{
+ g_return_if_fail (CLUTTER_IS_RGBA (self));
+ g_return_if_fail (alpha >= 0.0 && alpha <= 1.0);
+
+ if (self->alpha == alpha)
+ return;
+
+ self->alpha = alpha;
+
+ clutter_content_invalidate (CLUTTER_CONTENT (self));
+ g_object_notify_by_pspec (G_OBJECT (self), obj_props[PROP_ALPHA]);
+}
+
+gdouble
+clutter_rgba_get_alpha (ClutterRGBA *self)
+{
+ g_return_val_if_fail (CLUTTER_IS_RGBA (self), 0.0);
+
+ return self->alpha;
+}
+
+/**
+ * clutter_rgba_set_color:
+ * @self: a #ClutterRGBA
+ * @color: a #ClutterColor
+ *
+ * Sets the color values of a #ClutterRGBA using a #ClutterColor.
+ *
+ * Since: 1.6
+ */
+void
+clutter_rgba_set_color (ClutterRGBA *self,
+ const ClutterColor *color)
+{
+ GObject *obj;
+
+ g_return_if_fail (CLUTTER_IS_RGBA (self));
+
+ self->red = CLAMP (color->red / 255.0, 0.0, 1.0);
+ self->green = CLAMP (color->green / 255.0, 0.0, 1.0);
+ self->blue = CLAMP (color->blue / 255.0, 0.0, 1.0);
+ self->alpha = CLAMP (color->alpha / 255.0, 0.0, 1.0);
+
+ clutter_content_invalidate (CLUTTER_CONTENT (self));
+
+ obj = G_OBJECT (self);
+ g_object_notify_by_pspec (obj, obj_props[PROP_RED]);
+ g_object_notify_by_pspec (obj, obj_props[PROP_GREEN]);
+ g_object_notify_by_pspec (obj, obj_props[PROP_BLUE]);
+ g_object_notify_by_pspec (obj, obj_props[PROP_ALPHA]);
+}
+
+/**
+ * clutter_rgba_set_string:
+ * @self: a #ClutterRGBA
+ * @string: a color definition, as parseable by clutter_color_from_string()
+ *
+ * Sets the color values of a #ClutterRGBA using a @string definition.
+ *
+ * Since: 1.6
+ */
+void
+clutter_rgba_set_string (ClutterRGBA *self,
+ const gchar *string)
+{
+ ClutterColor color;
+
+ if (!clutter_color_from_string (&color, string))
+ return;
+
+ clutter_rgba_set_color (self, &color);
+}
diff --git a/clutter/clutter-rgba.h b/clutter/clutter-rgba.h
new file mode 100644
index 0000000..8f78ae8
--- /dev/null
+++ b/clutter/clutter-rgba.h
@@ -0,0 +1,55 @@
+#if !defined(__CLUTTER_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
+#error "Only <clutter/clutter.h> can be included directly."
+#endif
+
+#ifndef __CLUTTER_RGBA_H__
+#define __CLUTTER_RGBA_H__
+
+#include <clutter/clutter-types.h>
+
+G_BEGIN_DECLS
+
+#define CLUTTER_TYPE_RGBA (clutter_rgba_get_type ())
+#define CLUTTER_RGBA(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), CLUTTER_TYPE_RGBA, ClutterRGBA))
+#define CLUTTER_IS_RGBA(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CLUTTER_TYPE_RGBA))
+
+/**
+ * ClutterRGBA:
+ *
+ * <structname>ClutterRGBA</structname> is an opaque structure whose
+ * members cannot be directly accessed.
+ *
+ * Since: 1.6
+ */
+typedef struct _ClutterRGBA ClutterRGBA;
+
+GType clutter_rgba_get_type (void) G_GNUC_CONST;
+
+ClutterContent *clutter_rgba_new (gdouble red,
+ gdouble green,
+ gdouble blue,
+ gdouble alpha);
+ClutterContent *clutter_rgba_new_from_color (const ClutterColor *color);
+ClutterContent *clutter_rgba_new_from_string (const gchar *string);
+
+void clutter_rgba_set_red (ClutterRGBA *self,
+ gdouble red);
+gdouble clutter_rgba_get_red (ClutterRGBA *self);
+void clutter_rgba_set_green (ClutterRGBA *self,
+ gdouble green);
+gdouble clutter_rgba_get_green (ClutterRGBA *self);
+void clutter_rgba_set_blue (ClutterRGBA *self,
+ gdouble blue);
+gdouble clutter_rgba_get_blue (ClutterRGBA *self);
+void clutter_rgba_set_alpha (ClutterRGBA *self,
+ gdouble alpha);
+gdouble clutter_rgba_get_alpha (ClutterRGBA *self);
+
+void clutter_rgba_set_color (ClutterRGBA *self,
+ const ClutterColor *color);
+void clutter_rgba_set_string (ClutterRGBA *self,
+ const gchar *string);
+
+G_END_DECLS
+
+#endif /* __CLUTTER_RGBA_H__ */
diff --git a/clutter/clutter.h b/clutter/clutter.h
index e5cebc3..a700fae 100644
--- a/clutter/clutter.h
+++ b/clutter/clutter.h
@@ -91,6 +91,7 @@
#include "clutter-path-constraint.h"
#include "clutter-path.h"
#include "clutter-rectangle.h"
+#include "clutter-rgba.h"
#include "clutter-score.h"
#include "clutter-scriptable.h"
#include "clutter-script.h"
diff --git a/tests/interactive/Makefile.am b/tests/interactive/Makefile.am
index 5c04bf6..b03ff78 100644
--- a/tests/interactive/Makefile.am
+++ b/tests/interactive/Makefile.am
@@ -55,7 +55,8 @@ UNIT_TESTS = \
test-cogl-point-sprites.c \
test-table-layout.c \
test-path-constraint.c \
- test-snap-constraint.c
+ test-snap-constraint.c \
+ test-rgba-content.c
if X11_TESTS
UNIT_TESTS += test-pixmap.c test-devices.c
diff --git a/tests/interactive/test-rgba-content.c b/tests/interactive/test-rgba-content.c
new file mode 100644
index 0000000..dbb3713
--- /dev/null
+++ b/tests/interactive/test-rgba-content.c
@@ -0,0 +1,78 @@
+#include <stdlib.h>
+#include <gmodule.h>
+#include <clutter/clutter.h>
+
+#define STAGE_WIDTH 400
+#define STAGE_HEIGHT 400
+#define PADDING 10
+#define SPACING 2
+#define RECT_SIZE 64
+
+G_MODULE_EXPORT int
+test_rgba_content_main (int argc,
+ char *argv[])
+{
+ ClutterActor *stage, *group;
+ ClutterContent *content;
+ int i, j, n_cols, n_rows;
+ float last_x, last_y;
+
+ if (clutter_init (&argc, &argv) != CLUTTER_INIT_SUCCESS)
+ return EXIT_FAILURE;
+
+ stage = clutter_stage_new ();
+ clutter_stage_set_title (CLUTTER_STAGE (stage), "RGBA Content");
+ clutter_stage_set_user_resizable (CLUTTER_STAGE (stage), TRUE);
+ clutter_actor_set_size (stage, 400, 400);
+ clutter_actor_show (stage);
+
+ g_signal_connect (stage, "destroy", G_CALLBACK (clutter_main_quit), NULL);
+
+ content = clutter_rgba_new (g_random_double_range (0.0, 1.0),
+ g_random_double_range (0.0, 1.0),
+ g_random_double_range (0.0, 1.0),
+ 1.0);
+
+ group = clutter_group_new ();
+ clutter_container_add_actor (CLUTTER_CONTAINER (stage), group);
+ clutter_actor_add_constraint (group, clutter_align_constraint_new (stage, CLUTTER_ALIGN_X_AXIS, 0.5));
+ clutter_actor_add_constraint (group, clutter_align_constraint_new (stage, CLUTTER_ALIGN_Y_AXIS, 0.5));
+ clutter_actor_set_content (group, content);
+ g_object_unref (content);
+
+ content = clutter_rgba_new (g_random_double_range (0.0, 1.0),
+ g_random_double_range (0.0, 1.0),
+ g_random_double_range (0.0, 1.0),
+ 1.0);
+
+ n_cols = (STAGE_WIDTH - (2 * PADDING)) / (RECT_SIZE + (2 * SPACING));
+ n_rows = (STAGE_HEIGHT - (2 * PADDING)) / (RECT_SIZE + (2 * SPACING));
+
+ last_y = PADDING + SPACING;
+ for (i = 0; i < n_rows; i++)
+ {
+ last_x = PADDING + SPACING;
+ for (j = 0; j < n_cols; j++)
+ {
+ ClutterActor *rect = g_object_new (CLUTTER_TYPE_ACTOR, NULL);
+
+ clutter_actor_set_position (rect, last_x, last_y);
+ clutter_actor_set_size (rect, RECT_SIZE, RECT_SIZE);
+ clutter_actor_set_content (rect, content);
+
+ clutter_container_add_actor (CLUTTER_CONTAINER (group), rect);
+
+ last_x += RECT_SIZE + SPACING;
+ }
+
+ last_y += RECT_SIZE + SPACING;
+ }
+
+ clutter_actor_set_size (group, last_x + PADDING, last_y + PADDING);
+
+ g_object_unref (content);
+
+ clutter_main ();
+
+ return EXIT_SUCCESS;
+}
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