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Lightbox: complete radial effect for modal dialogs

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Rework the radial effect to use similar code to MetaBackground,
and adjust parameters to make it more noticeable.

https://bugzilla.gnome.org/show_bug.cgi?id=725830
This commit is contained in:
Giovanni Campagna
2014-03-06 16:17:36 +01:00
parent 821768a414
commit fc4bc5277a
4 changed files with 123 additions and 46 deletions
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49
src/shell-glsl-quad.c
View File

@ -24,7 +24,6 @@ G_DEFINE_TYPE (ShellGLSLQuad, shell_glsl_quad, CLUTTER_TYPE_ACTOR);
struct _ShellGLSLQuadPrivate
{
CoglPipeline *pipeline;
CoglTexture2D *texture;
};
static void
@ -40,9 +39,10 @@ shell_glsl_quad_paint (ClutterActor *actor)
paint_opacity = clutter_actor_get_paint_opacity (actor);
clutter_actor_get_allocation_box (actor, &box);
/* semi-transparent black */
cogl_pipeline_set_color4ub (priv->pipeline,
0, 0, 0,
paint_opacity,
paint_opacity,
paint_opacity,
paint_opacity);
cogl_framebuffer_draw_rectangle (cogl_get_draw_framebuffer (),
priv->pipeline,
@ -105,7 +105,6 @@ shell_glsl_quad_dispose (GObject *gobject)
priv = self->priv;
g_clear_pointer (&priv->pipeline, cogl_object_unref);
g_clear_pointer (&priv->texture, cogl_object_unref);
G_OBJECT_CLASS (shell_glsl_quad_parent_class)->dispose (gobject);
}
@ -123,7 +122,6 @@ shell_glsl_quad_constructed (GObject *object)
ShellGLSLQuadClass *klass;
CoglContext *ctx =
clutter_backend_get_cogl_context (clutter_get_default_backend ());
static const uint8_t tex_data[] = { 0, 0, 0, 0 };
G_OBJECT_CLASS (shell_glsl_quad_parent_class)->constructed (object);
@ -144,11 +142,7 @@ shell_glsl_quad_constructed (GObject *object)
self->priv->pipeline = cogl_pipeline_copy (klass->base_pipeline);
self->priv->texture = cogl_texture_2d_new_from_data (ctx, 1, 1,
COGL_PIXEL_FORMAT_RGBA_8888,
0, tex_data, NULL);
cogl_pipeline_set_layer_texture (self->priv->pipeline, 0,
COGL_TEXTURE (self->priv->texture));
cogl_pipeline_set_layer_null_texture (self->priv->pipeline, 0, COGL_TEXTURE_TYPE_2D);
}
static void
@ -164,3 +158,38 @@ shell_glsl_quad_class_init (ShellGLSLQuadClass *klass)
g_type_class_add_private (klass, sizeof (ShellGLSLQuadPrivate));
}
/**
* shell_glsl_quad_get_uniform_location:
* @quad: a #ShellGLSLQuad
* @name: the uniform name
*
* Returns: the location of the uniform named @name, that can be
* passed to shell_glsl_quad_set_uniform_float().
*/
int
shell_glsl_quad_get_uniform_location (ShellGLSLQuad *quad,
const char *name)
{
return cogl_pipeline_get_uniform_location (quad->priv->pipeline, name);
}
/**
* shell_glsl_quad_set_uniform_float:
* @quad: a #ShellGLSLQuad
* @uniform: the uniform location (as returned by shell_glsl_quad_get_uniform_location())
* @n_components: the number of components in the uniform (eg. 3 for a vec3)
* @total_count: the total number of floats in @value
* @value: (array length=total_count): the array of floats to set @uniform
*/
void
shell_glsl_quad_set_uniform_float (ShellGLSLQuad *quad,
int uniform,
int n_components,
int total_count,
const float *value)
{
cogl_pipeline_set_uniform_float (quad->priv->pipeline, uniform,
n_components, total_count / n_components,
value);
}

8
src/shell-glsl-quad.h
View File

@ -61,4 +61,12 @@ void shell_glsl_quad_add_glsl_snippet (ShellGLSLQuad *quad,
const char *code,
gboolean is_replace);
int shell_glsl_quad_get_uniform_location (ShellGLSLQuad *quad,
const char *name);
void shell_glsl_quad_set_uniform_float (ShellGLSLQuad *quad,
int uniform,
int n_components,
int total_count,
const float *value);
#endif /* __SHELL_GLSL_QUAD_H__ */