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Diffstat (limited to 'clutter/clutter/clutter-colorize-effect.c')
| -rw-r--r-- | clutter/clutter/clutter-colorize-effect.c | 335 |
1 files changed, 0 insertions, 335 deletions
diff --git a/clutter/clutter/clutter-colorize-effect.c b/clutter/clutter/clutter-colorize-effect.c deleted file mode 100644 index 6f7de95bd..000000000 --- a/clutter/clutter/clutter-colorize-effect.c +++ /dev/null @@ -1,335 +0,0 @@ -/* - * Clutter. - * - * An OpenGL based 'interactive canvas' library. - * - * Copyright (C) 2010 Intel Corporation. - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library. If not, see <http://www.gnu.org/licenses/>. - * - * Author: - * Emmanuele Bassi <ebassi@linux.intel.com> - */ - -/** - * SECTION:clutter-colorize-effect - * @short_description: A colorization effect - * @see_also: #ClutterEffect, #ClutterOffscreenEffect - * - * #ClutterColorizeEffect is a sub-class of #ClutterEffect that - * colorizes an actor with the given tint. - * - * #ClutterColorizeEffect is available since Clutter 1.4 - */ - -#define CLUTTER_COLORIZE_EFFECT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), CLUTTER_TYPE_COLORIZE_EFFECT, ClutterColorizeEffectClass)) -#define CLUTTER_IS_COLORIZE_EFFECT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), CLUTTER_TYPE_COLORIZE_EFFECT)) -#define CLUTTER_COLORIZE_EFFECT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), CLUTTER_TYPE_COLORIZE_EFFECT, ClutterColorizeEffectClass)) - -#include "clutter-build-config.h" - -#include "clutter-colorize-effect.h" - -#include "cogl/cogl.h" - -#include "clutter-debug.h" -#include "clutter-enum-types.h" -#include "clutter-offscreen-effect.h" -#include "clutter-private.h" - -struct _ClutterColorizeEffect -{ - ClutterOffscreenEffect parent_instance; - - /* the tint of the colorization */ - ClutterColor tint; - - gint tint_uniform; - - CoglPipeline *pipeline; -}; - -struct _ClutterColorizeEffectClass -{ - ClutterOffscreenEffectClass parent_class; - - CoglPipeline *base_pipeline; -}; - -/* the magic gray vec3 has been taken from the NTSC conversion weights - * as defined by: - * - * "OpenGL Superbible, 4th Edition" - * -- Richard S. Wright Jr, Benjamin Lipchak, Nicholas Haemel - * Addison-Wesley - */ -static const gchar *colorize_glsl_declarations = -"uniform vec3 tint;\n"; - -static const gchar *colorize_glsl_source = -"float gray = dot (cogl_color_out.rgb, vec3 (0.299, 0.587, 0.114));\n" -"cogl_color_out.rgb = gray * tint;\n"; - -/* a lame sepia */ -static const ClutterColor default_tint = { 255, 204, 153, 255 }; - -enum -{ - PROP_0, - - PROP_TINT, - - PROP_LAST -}; - -static GParamSpec *obj_props[PROP_LAST]; - -G_DEFINE_TYPE (ClutterColorizeEffect, - clutter_colorize_effect, - CLUTTER_TYPE_OFFSCREEN_EFFECT); - -static CoglPipeline * -clutter_colorize_effect_create_pipeline (ClutterOffscreenEffect *effect, - CoglTexture *texture) -{ - ClutterColorizeEffect *colorize_effect = CLUTTER_COLORIZE_EFFECT (effect); - - cogl_pipeline_set_layer_texture (colorize_effect->pipeline, 0, texture); - - return cogl_object_ref (colorize_effect->pipeline); -} - -static gboolean -clutter_colorize_effect_pre_paint (ClutterEffect *effect, - ClutterPaintNode *node, - ClutterPaintContext *paint_context) -{ - ClutterEffectClass *parent_class; - - if (!clutter_feature_available (CLUTTER_FEATURE_SHADERS_GLSL)) - { - /* if we don't have support for GLSL shaders then we - * forcibly disable the ActorMeta - */ - g_warning ("Unable to use the ShaderEffect: the graphics hardware " - "or the current GL driver does not implement support " - "for the GLSL shading language."); - clutter_actor_meta_set_enabled (CLUTTER_ACTOR_META (effect), FALSE); - return FALSE; - } - - parent_class = CLUTTER_EFFECT_CLASS (clutter_colorize_effect_parent_class); - return parent_class->pre_paint (effect, node, paint_context); -} - -static void -clutter_colorize_effect_dispose (GObject *gobject) -{ - ClutterColorizeEffect *self = CLUTTER_COLORIZE_EFFECT (gobject); - - if (self->pipeline != NULL) - { - cogl_object_unref (self->pipeline); - self->pipeline = NULL; - } - - G_OBJECT_CLASS (clutter_colorize_effect_parent_class)->dispose (gobject); -} - -static void -clutter_colorize_effect_set_property (GObject *gobject, - guint prop_id, - const GValue *value, - GParamSpec *pspec) -{ - ClutterColorizeEffect *effect = CLUTTER_COLORIZE_EFFECT (gobject); - - switch (prop_id) - { - case PROP_TINT: - clutter_colorize_effect_set_tint (effect, - clutter_value_get_color (value)); - break; - - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec); - break; - } -} - -static void -clutter_colorize_effect_get_property (GObject *gobject, - guint prop_id, - GValue *value, - GParamSpec *pspec) -{ - ClutterColorizeEffect *effect = CLUTTER_COLORIZE_EFFECT (gobject); - - switch (prop_id) - { - case PROP_TINT: - clutter_value_set_color (value, &effect->tint); - break; - - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec); - break; - } -} - -static void -clutter_colorize_effect_class_init (ClutterColorizeEffectClass *klass) -{ - ClutterEffectClass *effect_class = CLUTTER_EFFECT_CLASS (klass); - GObjectClass *gobject_class = G_OBJECT_CLASS (klass); - ClutterOffscreenEffectClass *offscreen_class; - - offscreen_class = CLUTTER_OFFSCREEN_EFFECT_CLASS (klass); - offscreen_class->create_pipeline = clutter_colorize_effect_create_pipeline; - - effect_class->pre_paint = clutter_colorize_effect_pre_paint; - - gobject_class->set_property = clutter_colorize_effect_set_property; - gobject_class->get_property = clutter_colorize_effect_get_property; - gobject_class->dispose = clutter_colorize_effect_dispose; - - /** - * ClutterColorizeEffect:tint: - * - * The tint to apply to the actor - * - * Since: 1.4 - */ - obj_props[PROP_TINT] = - clutter_param_spec_color ("tint", - P_("Tint"), - P_("The tint to apply"), - &default_tint, - CLUTTER_PARAM_READWRITE); - - g_object_class_install_properties (gobject_class, PROP_LAST, obj_props); -} - -static void -update_tint_uniform (ClutterColorizeEffect *self) -{ - if (self->tint_uniform > -1) - { - float tint[3] = { - self->tint.red / 255.0, - self->tint.green / 255.0, - self->tint.blue / 255.0 - }; - - cogl_pipeline_set_uniform_float (self->pipeline, - self->tint_uniform, - 3, /* n_components */ - 1, /* count */ - tint); - } -} - -static void -clutter_colorize_effect_init (ClutterColorizeEffect *self) -{ - ClutterColorizeEffectClass *klass = CLUTTER_COLORIZE_EFFECT_GET_CLASS (self); - - if (G_UNLIKELY (klass->base_pipeline == NULL)) - { - CoglSnippet *snippet; - CoglContext *ctx = - clutter_backend_get_cogl_context (clutter_get_default_backend ()); - - klass->base_pipeline = cogl_pipeline_new (ctx); - - snippet = cogl_snippet_new (COGL_SNIPPET_HOOK_FRAGMENT, - colorize_glsl_declarations, - colorize_glsl_source); - cogl_pipeline_add_snippet (klass->base_pipeline, snippet); - cogl_object_unref (snippet); - - cogl_pipeline_set_layer_null_texture (klass->base_pipeline, 0); - } - - self->pipeline = cogl_pipeline_copy (klass->base_pipeline); - - self->tint_uniform = - cogl_pipeline_get_uniform_location (self->pipeline, "tint"); - - self->tint = default_tint; - - update_tint_uniform (self); -} - -/** - * clutter_colorize_effect_new: - * @tint: the color to be used - * - * Creates a new #ClutterColorizeEffect to be used with - * clutter_actor_add_effect() - * - * Return value: the newly created #ClutterColorizeEffect or %NULL - * - * Since: 1.4 - */ -ClutterEffect * -clutter_colorize_effect_new (const ClutterColor *tint) -{ - return g_object_new (CLUTTER_TYPE_COLORIZE_EFFECT, - "tint", tint, - NULL); -} - -/** - * clutter_colorize_effect_set_tint: - * @effect: a #ClutterColorizeEffect - * @tint: the color to be used - * - * Sets the tint to be used when colorizing - * - * Since: 1.4 - */ -void -clutter_colorize_effect_set_tint (ClutterColorizeEffect *effect, - const ClutterColor *tint) -{ - g_return_if_fail (CLUTTER_IS_COLORIZE_EFFECT (effect)); - - effect->tint = *tint; - - update_tint_uniform (effect); - - clutter_effect_queue_repaint (CLUTTER_EFFECT (effect)); - - g_object_notify_by_pspec (G_OBJECT (effect), obj_props[PROP_TINT]); -} - -/** - * clutter_colorize_effect_get_tint: - * @effect: a #ClutterColorizeEffect - * @tint: (out caller-allocates): return location for the color used - * - * Retrieves the tint used by @effect - * - * Since: 1.4 - */ -void -clutter_colorize_effect_get_tint (ClutterColorizeEffect *effect, - ClutterColor *tint) -{ - g_return_if_fail (CLUTTER_IS_COLORIZE_EFFECT (effect)); - g_return_if_fail (tint != NULL); - - *tint = effect->tint; -} |