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////////////////////////////////////////////////////////////////////////////////
//3456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789
// 10 20 30 40 50 60 70 80
//
// notify-osd
//
// raico-blur.c - implements public API for blurring cairo image-surfaces
//
// Copyright 2009 Canonical Ltd.
//
// Authors:
// Mirco "MacSlow" Mueller <mirco.mueller@canonical.com>
//
// This program is free software: you can redistribute it and/or modify it
// under the terms of the GNU General Public License version 3, as published
// by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranties of
// MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR
// PURPOSE. See the GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program. If not, see <http://www.gnu.org/licenses/>.
//
////////////////////////////////////////////////////////////////////////////////
#include "raico-blur.h"
#include "exponential-blur.h"
#include "stack-blur.h"
#include "gaussian-blur.h"
struct _raico_blur_private_t
{
raico_blur_quality_t quality; // low, medium, high
guint radius; // blur-radius
};
raico_blur_t*
raico_blur_create (raico_blur_quality_t quality)
{
raico_blur_t* blur = NULL;
raico_blur_private_t* priv = NULL;
blur = g_new0 (raico_blur_t, 1);
if (!blur)
{
g_debug ("raico_blur_create(): could not allocate blur struct");
return NULL;
}
priv = g_new0 (raico_blur_private_t, 1);
if (!priv)
{
g_debug ("raico_blur_create(): could not allocate priv struct");
g_free ((gpointer) blur);
return NULL;
}
priv->quality = quality;
priv->radius = 0;
blur->priv = priv;
return blur;
}
raico_blur_quality_t
raico_blur_get_quality (raico_blur_t* blur)
{
g_assert (blur != NULL);
return blur->priv->quality;
}
void
raico_blur_set_quality (raico_blur_t* blur,
raico_blur_quality_t quality)
{
if (!blur)
{
g_debug ("raico_blur_set_quality(): NULL blur-pointer passed");
return;
}
blur->priv->quality = quality;
}
guint
raico_blur_get_radius (raico_blur_t* blur)
{
g_assert (blur != NULL);
return blur->priv->radius;
}
void
raico_blur_set_radius (raico_blur_t* blur,
guint radius)
{
if (!blur)
{
g_debug ("raico_blur_set_radius(): NULL blur-pointer passed");
return;
}
blur->priv->radius = radius;
}
void
raico_blur_apply (raico_blur_t* blur,
cairo_surface_t* surface)
{
cairo_format_t format;
// sanity checks
if (!blur)
{
g_debug ("raico_blur_apply(): NULL blur-pointer passed");
return;
}
if (!surface)
{
g_debug ("raico_blur_apply(): NULL surface-pointer passed");
return;
}
if (cairo_surface_status (surface) != CAIRO_STATUS_SUCCESS)
{
g_debug ("raico_blur_apply(): invalid surface status");
return;
}
if (cairo_surface_get_type (surface) != CAIRO_SURFACE_TYPE_IMAGE)
{
g_debug ("raico_blur_apply(): non-image surface passed");
return;
}
format = cairo_image_surface_get_format (surface);
if (format != CAIRO_FORMAT_A8 &&
format != CAIRO_FORMAT_RGB24 &&
format != CAIRO_FORMAT_ARGB32)
{
g_debug ("raico_blur_apply(): unsupported image-format");
return;
}
// stupid, but you never know
if (blur->priv->radius == 0)
return;
// now do the real work
switch (blur->priv->quality)
{
case RAICO_BLUR_QUALITY_LOW:
//surface_exponential_blur (surface, blur->priv->radius);
surface_gaussian_blur (surface, blur->priv->radius);
break;
case RAICO_BLUR_QUALITY_MEDIUM:
//surface_stack_blur (surface, blur->priv->radius);
surface_gaussian_blur (surface, blur->priv->radius);
break;
case RAICO_BLUR_QUALITY_HIGH:
surface_gaussian_blur (surface, blur->priv->radius);
break;
}
}
void
raico_blur_destroy (raico_blur_t* blur)
{
if (!blur)
{
g_debug ("raico_blur_destroy(): invalid blur-pointer passed");
return;
}
g_free ((gpointer) blur->priv);
g_free ((gpointer) blur);
}
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