[gnome-photos/wip/rishi/hefe: 1/5] Add radial-gradient
- From: Debarshi Ray <debarshir src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gnome-photos/wip/rishi/hefe: 1/5] Add radial-gradient
- Date: Fri, 22 Jan 2016 20:00:16 +0000 (UTC)
commit b806a863384f99a101586f1704461be5e50c7c94
Author: Debarshi Ray <debarshir gnome org>
Date: Tue Jan 12 18:34:51 2016 +0100
Add radial-gradient
src/Makefile.am | 2 +
src/photos-operation-radial-gradient.c | 446 ++++++++++++++++++++++++++++++++
src/photos-operation-radial-gradient.h | 45 ++++
src/photos-utils.c | 2 +
4 files changed, 495 insertions(+), 0 deletions(-)
---
diff --git a/src/Makefile.am b/src/Makefile.am
index a5c5b1a..b625543 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -136,6 +136,8 @@ gnome_photos_SOURCES = \
photos-operation-jpg-guess-sizes.h \
photos-operation-png-guess-sizes.c \
photos-operation-png-guess-sizes.h \
+ photos-operation-radial-gradient.c \
+ photos-operation-radial-gradient.h \
photos-operation-saturation.c \
photos-operation-saturation.h \
photos-organize-collection-dialog.c \
diff --git a/src/photos-operation-radial-gradient.c b/src/photos-operation-radial-gradient.c
new file mode 100644
index 0000000..1c3e618
--- /dev/null
+++ b/src/photos-operation-radial-gradient.c
@@ -0,0 +1,446 @@
+/*
+ * Photos - access, organize and share your photos on GNOME
+ * Copyright © 2016 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+
+#include "config.h"
+
+#include <math.h>
+
+#include <babl/babl.h>
+#include <gegl.h>
+#include <gegl-plugin.h>
+
+#include "photos-operation-radial-gradient.h"
+
+
+typedef void (*PhotosOperationProcessFunc) (GeglOperation *, void *, glong, const GeglRectangle *, gint);
+
+struct _PhotosOperationRadialGradient
+{
+ GeglOperationPointRender parent_instance;
+ GeglColor *color_end;
+ GeglColor *color_start;
+ PhotosOperationProcessFunc process;
+ gboolean ignore_abyss;
+ gfloat r0;
+ gfloat r1;
+ gfloat x;
+ gfloat y;
+};
+
+struct _PhotosOperationRadialGradientClass
+{
+ GeglOperationPointRenderClass parent_class;
+};
+
+enum
+{
+ PROP_0,
+ PROP_COLOR_END,
+ PROP_COLOR_START,
+ PROP_IGNORE_ABYSS,
+ PROP_R0,
+ PROP_R1,
+ PROP_X,
+ PROP_Y
+};
+
+
+G_DEFINE_TYPE (PhotosOperationRadialGradient, photos_operation_radial_gradient,
GEGL_TYPE_OPERATION_POINT_RENDER);
+
+
+static gfloat
+photos_operation_radial_gradient_calculate_distance (gfloat x1, gfloat y1, gfloat x2, gfloat y2)
+{
+ const gfloat dx = x1 - x2;
+ const gfloat dx2 = dx * dx;
+ const gfloat dy = y1 - y2;
+ const gfloat dy2 = dy * dy;
+ gfloat distance;
+
+ distance = sqrtf (dx2 + dy2);
+ return distance;
+}
+
+
+static void
+photos_operation_radial_gradient_process_zero (GeglOperation *operation,
+ void *out_buf,
+ glong n_pixels,
+ const GeglRectangle *roi,
+ gint level)
+{
+ const Babl *format;
+ GeglColor *transparent;
+ gfloat pixel_transparent[4];
+ gint bpp;
+
+ format = babl_format ("R'G'B'A float");
+ bpp = babl_format_get_bytes_per_pixel (format);
+
+ transparent = gegl_color_new ("#00000000");
+ gegl_color_get_pixel (transparent, format, pixel_transparent);
+ gegl_memset_pattern (out_buf, pixel_transparent, bpp, n_pixels);
+
+ g_object_unref (transparent);
+}
+
+
+static void
+photos_operation_radial_gradient_process_with_abyss (GeglOperation *operation,
+ void *out_buf,
+ glong n_pixels,
+ const GeglRectangle *roi,
+ gint level)
+{
+ PhotosOperationRadialGradient *self = PHOTOS_OPERATION_RADIAL_GRADIENT (operation);
+ const Babl *format;
+ const gfloat rdiff = self->r1 - self->r0;
+ gfloat pixel_end[4];
+ gfloat pixel_start[4];
+ gfloat *out = out_buf;
+ const gint x1 = roi->x + roi->width;
+ const gint y1 = roi->y + roi->height;
+ gint x;
+ gint y;
+
+ format = babl_format ("R'G'B'A float");
+ gegl_color_get_pixel (self->color_end, format, pixel_end);
+ gegl_color_get_pixel (self->color_start, format, pixel_start);
+
+ for (y = roi->y; y < y1; y++)
+ {
+ for (x = roi->x; x < x1; x++, out += 4)
+ {
+ gfloat distance;
+ gfloat v;
+ gint c;
+
+ distance = photos_operation_radial_gradient_calculate_distance (x, y, self->x, self->y);
+ if (distance < self->r0 + GEGL_FLOAT_EPSILON)
+ v = 0.0f;
+ else if (distance > self->r1 - GEGL_FLOAT_EPSILON)
+ v = 1.0f;
+ else
+ v = (distance - self->r0) / rdiff;
+
+ for (c = 0; c < 4; c++)
+ out[c] = pixel_start[c] * (1.0f - v) + pixel_end[c] * v;
+ }
+ }
+}
+
+
+static void
+photos_operation_radial_gradient_process_without_abyss (GeglOperation *operation,
+ void *out_buf,
+ glong n_pixels,
+ const GeglRectangle *roi,
+ gint level)
+{
+ PhotosOperationRadialGradient *self = PHOTOS_OPERATION_RADIAL_GRADIENT (operation);
+ const Babl *format;
+ GeglColor *transparent;
+ const gfloat rdiff = self->r1 - self->r0;
+ gfloat pixel_end[4];
+ gfloat pixel_start[4];
+ gfloat pixel_transparent[4];
+ gfloat *out = out_buf;
+ const gint x1 = roi->x + roi->width;
+ const gint y1 = roi->y + roi->height;
+ gint bpp;
+ gint x;
+ gint y;
+
+ format = babl_format ("R'G'B'A float");
+ bpp = babl_format_get_bytes_per_pixel (format);
+
+ transparent = gegl_color_new ("#00000000");
+ gegl_color_get_pixel (transparent, format, pixel_transparent);
+ gegl_memset_pattern (out_buf, pixel_transparent, bpp, n_pixels);
+
+ gegl_color_get_pixel (self->color_end, format, pixel_end);
+ gegl_color_get_pixel (self->color_start, format, pixel_start);
+
+ for (y = roi->y; y < y1; y++)
+ {
+ for (x = roi->x; x < x1; x++, out += 4)
+ {
+ gfloat distance;
+ gfloat v;
+ gint c;
+
+ distance = photos_operation_radial_gradient_calculate_distance (x, y, self->x, self->y);
+ if (distance < self->r0 - GEGL_FLOAT_EPSILON)
+ continue;
+ else if (distance > self->r1 + GEGL_FLOAT_EPSILON)
+ continue;
+
+ if (distance < self->r0 + GEGL_FLOAT_EPSILON)
+ v = 0.0f;
+ else if (distance > self->r1 - GEGL_FLOAT_EPSILON)
+ v = 1.0f;
+ else
+ v = (distance - self->r0) / rdiff;
+
+ for (c = 0; c < 4; c++)
+ out[c] = pixel_start[c] * (1.0f - v) + pixel_end[c] * v;
+ }
+ }
+
+ g_object_unref (transparent);
+}
+
+
+static GeglRectangle
+photos_operation_radial_gradient_get_bounding_box (GeglOperation *operation)
+{
+ GeglRectangle bbox;
+
+ bbox = gegl_rectangle_infinite_plane ();
+ return bbox;
+}
+
+
+static void
+photos_operation_radial_gradient_prepare (GeglOperation *operation)
+{
+ PhotosOperationRadialGradient *self = PHOTOS_OPERATION_RADIAL_GRADIENT (operation);
+ const Babl* format;
+ const gfloat rdiff = self->r1 - self->r0;
+
+ if (GEGL_FLOAT_IS_ZERO (rdiff))
+ self->process = photos_operation_radial_gradient_process_zero;
+ else if (self->ignore_abyss)
+ self->process = photos_operation_radial_gradient_process_without_abyss;
+ else
+ self->process = photos_operation_radial_gradient_process_with_abyss;
+
+ format = babl_format ("R'G'B'A float");
+ gegl_operation_set_format (operation, "output", format);
+}
+
+
+static gboolean
+photos_operation_radial_gradient_process (GeglOperation *operation,
+ void *out_buf,
+ glong n_pixels,
+ const GeglRectangle *roi,
+ gint level)
+{
+ PhotosOperationRadialGradient *self = PHOTOS_OPERATION_RADIAL_GRADIENT (operation);
+
+ self->process (operation, out_buf, n_pixels, roi, level);
+ return TRUE;
+}
+
+
+static void
+photos_operation_radial_gradient_dispose (GObject *object)
+{
+ PhotosOperationRadialGradient *self = PHOTOS_OPERATION_RADIAL_GRADIENT (object);
+
+ g_clear_object (&self->color_end);
+ g_clear_object (&self->color_start);
+
+ G_OBJECT_CLASS (photos_operation_radial_gradient_parent_class)->dispose (object);
+}
+
+
+static void
+photos_operation_radial_gradient_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec
*pspec)
+{
+ PhotosOperationRadialGradient *self = PHOTOS_OPERATION_RADIAL_GRADIENT (object);
+
+ switch (prop_id)
+ {
+ case PROP_COLOR_END:
+ g_value_set_object (value, self->color_end);
+ break;
+
+ case PROP_COLOR_START:
+ g_value_set_object (value, self->color_start);
+ break;
+
+ case PROP_IGNORE_ABYSS:
+ g_value_set_boolean (value, self->ignore_abyss);
+ break;
+
+ case PROP_R0:
+ g_value_set_double (value, (gdouble) self->r0);
+ break;
+
+ case PROP_R1:
+ g_value_set_double (value, (gdouble) self->r1);
+ break;
+
+ case PROP_X:
+ g_value_set_double (value, (gdouble) self->x);
+ break;
+
+ case PROP_Y:
+ g_value_set_double (value, (gdouble) self->y);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+
+static void
+photos_operation_radial_gradient_set_property (GObject *object, guint prop_id, const GValue *value,
GParamSpec *pspec)
+{
+ PhotosOperationRadialGradient *self = PHOTOS_OPERATION_RADIAL_GRADIENT (object);
+
+ switch (prop_id)
+ {
+ case PROP_COLOR_END:
+ g_clear_object (&self->color_end);
+ self->color_end = GEGL_COLOR (g_value_dup_object (value));
+ break;
+
+ case PROP_COLOR_START:
+ g_clear_object (&self->color_start);
+ self->color_start = GEGL_COLOR (g_value_dup_object (value));
+ break;
+
+ case PROP_IGNORE_ABYSS:
+ self->ignore_abyss = g_value_get_boolean (value);
+ break;
+
+ case PROP_R0:
+ self->r0 = (gfloat) g_value_get_double (value);
+ break;
+
+ case PROP_R1:
+ self->r1 = (gfloat) g_value_get_double (value);
+ break;
+
+ case PROP_X:
+ self->x = (gfloat) g_value_get_double (value);
+ break;
+
+ case PROP_Y:
+ self->y = (gfloat) g_value_get_double (value);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+
+static void
+photos_operation_radial_gradient_init (PhotosOperationRadialGradient *self)
+{
+}
+
+
+static void
+photos_operation_radial_gradient_class_init (PhotosOperationRadialGradientClass *class)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (class);
+ GeglOperationClass *operation_class = GEGL_OPERATION_CLASS (class);
+ GeglOperationPointRenderClass *point_render_class = GEGL_OPERATION_POINT_RENDER_CLASS (class);
+
+ operation_class->no_cache = TRUE;
+ operation_class->opencl_support = FALSE;
+
+ object_class->dispose = photos_operation_radial_gradient_dispose;
+ object_class->get_property = photos_operation_radial_gradient_get_property;
+ object_class->set_property = photos_operation_radial_gradient_set_property;
+ operation_class->get_bounding_box = photos_operation_radial_gradient_get_bounding_box;
+ operation_class->prepare = photos_operation_radial_gradient_prepare;
+ point_render_class->process = photos_operation_radial_gradient_process;
+
+ g_object_class_install_property (object_class,
+ PROP_COLOR_END,
+ gegl_param_spec_color_from_string ("color-end",
+ "Outer Color",
+ "The color at the edge of the end
circle",
+ "black",
+ G_PARAM_CONSTRUCT |
G_PARAM_READWRITE));
+
+ g_object_class_install_property (object_class,
+ PROP_COLOR_START,
+ gegl_param_spec_color_from_string ("color-start",
+ "Inner Color",
+ "The color at the edge of the start
circle",
+ "white",
+ G_PARAM_CONSTRUCT |
G_PARAM_READWRITE));
+
+ g_object_class_install_property (object_class,
+ PROP_IGNORE_ABYSS,
+ g_param_spec_boolean ("ignore-abyss",
+ "Ignore Abyss",
+ "Don't draw beyond the edges of the circles",
+ FALSE,
+ G_PARAM_CONSTRUCT | G_PARAM_READWRITE));
+
+ g_object_class_install_property (object_class,
+ PROP_R0,
+ g_param_spec_double ("r0",
+ "Inner Radius",
+ "The radius of the start circle",
+ 0.0,
+ G_MAXDOUBLE,
+ 0.0,
+ G_PARAM_CONSTRUCT | G_PARAM_READWRITE));
+
+ g_object_class_install_property (object_class,
+ PROP_R1,
+ g_param_spec_double ("r1",
+ "Outer Radius",
+ "The radius of the end circle",
+ 0.0,
+ G_MAXDOUBLE,
+ 25.0,
+ G_PARAM_CONSTRUCT | G_PARAM_READWRITE));
+
+ g_object_class_install_property (object_class,
+ PROP_X,
+ g_param_spec_double ("x",
+ "X",
+ "The x-coordinate of the circles' center",
+ 0.0,
+ G_MAXDOUBLE,
+ 25.0,
+ G_PARAM_CONSTRUCT | G_PARAM_READWRITE));
+
+ g_object_class_install_property (object_class,
+ PROP_Y,
+ g_param_spec_double ("y",
+ "Y",
+ "The y-coordinate of the circles' center",
+ 0.0,
+ G_MAXDOUBLE,
+ 25.0,
+ G_PARAM_CONSTRUCT | G_PARAM_READWRITE));
+
+ gegl_operation_class_set_keys (operation_class,
+ "name", "photos:radial-gradient",
+ "title", "Radial Gradient",
+ "description", "Radial gradient renderer",
+ "categories", "render:gradient",
+ NULL);
+}
diff --git a/src/photos-operation-radial-gradient.h b/src/photos-operation-radial-gradient.h
new file mode 100644
index 0000000..5cd4fd9
--- /dev/null
+++ b/src/photos-operation-radial-gradient.h
@@ -0,0 +1,45 @@
+/*
+ * Photos - access, organize and share your photos on GNOME
+ * Copyright © 2016 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+#ifndef PHOTOS_OPERATION_RADIAL_GRADIENT_H
+#define PHOTOS_OPERATION_RADIAL_GRADIENT_H
+
+#include <glib-object.h>
+
+G_BEGIN_DECLS
+
+#define PHOTOS_TYPE_OPERATION_RADIAL_GRADIENT (photos_operation_radial_gradient_get_type ())
+
+#define PHOTOS_OPERATION_RADIAL_GRADIENT(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST ((obj), \
+ PHOTOS_TYPE_OPERATION_RADIAL_GRADIENT, PhotosOperationRadialGradient))
+
+#define PHOTOS_IS_OPERATION_RADIAL_GRADIENT(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE ((obj), \
+ PHOTOS_TYPE_OPERATION_RADIAL_GRADIENT))
+
+typedef struct _PhotosOperationRadialGradient PhotosOperationRadialGradient;
+typedef struct _PhotosOperationRadialGradientClass PhotosOperationRadialGradientClass;
+
+GType photos_operation_radial_gradient_get_type (void) G_GNUC_CONST;
+
+G_END_DECLS
+
+#endif /* PHOTOS_OPERATION_RADIAL_GRADIENT_H */
diff --git a/src/photos-utils.c b/src/photos-utils.c
index 47ca3e1..6afa818 100644
--- a/src/photos-utils.c
+++ b/src/photos-utils.c
@@ -46,6 +46,7 @@
#include "photos-operation-insta-filter.h"
#include "photos-operation-jpg-guess-sizes.h"
#include "photos-operation-png-guess-sizes.h"
+#include "photos-operation-radial-gradient.h"
#include "photos-operation-saturation.h"
#include "photos-query.h"
#include "photos-source.h"
@@ -815,6 +816,7 @@ photos_utils_ensure_builtins (void)
g_type_ensure (PHOTOS_TYPE_OPERATION_INSTA_FILTER);
g_type_ensure (PHOTOS_TYPE_OPERATION_JPG_GUESS_SIZES);
g_type_ensure (PHOTOS_TYPE_OPERATION_PNG_GUESS_SIZES);
+ g_type_ensure (PHOTOS_TYPE_OPERATION_RADIAL_GRADIENT);
g_type_ensure (PHOTOS_TYPE_OPERATION_SATURATION);
g_type_ensure (PHOTOS_TYPE_TOOL_COLORS);
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