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PIKApp/libpikawidgets/pikacolorselect.c

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Initial checkin of Pika from heckimp
2023-09-26 00:35:21 +02:00
/* LIBPIKA - The PIKA Library
* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
*
* pikacolorselect.c
* Copyright (C) 2002 Michael Natterer <mitch@gimp.org>
*
* based on color_notebook module
* Copyright (C) 1998 Austin Donnelly <austin@greenend.org.uk>
*
* 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 3 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
* Library 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
* <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gegl.h>
#include <gtk/gtk.h>
#include "libpikabase/pikabase.h"
#include "libpikaconfig/pikaconfig.h"
#include "libpikacolor/pikacolor.h"
#include "libpikamath/pikamath.h"
#include "pikawidgetstypes.h"
#include "pikacolorselector.h"
#include "pikacolorselect.h"
#include "pikahelpui.h"
#include "pikaicons.h"
#include "pikawidgetsutils.h"
#include "libpika/libpika-intl.h"
/**
* SECTION: pikacolorselect
* @title: PikaColorSelect
* @short_description: A #PikaColorSelector implementation.
*
* The #PikaColorSelect widget is an implementation of a
* #PikaColorSelector. It shows a square area that supports
* interactively changing two color channels and a smaller area to
* change the third channel. You can select which channel should be
* the third by calling pika_color_selector_set_channel(). The widget
* will then change the other two channels accordingly.
**/
#define COLOR_AREA_EVENT_MASK (GDK_EXPOSURE_MASK | \
GDK_BUTTON_PRESS_MASK | \
GDK_BUTTON_RELEASE_MASK | \
GDK_BUTTON_MOTION_MASK | \
GDK_ENTER_NOTIFY_MASK)
typedef enum
{
COLOR_SELECT_HUE = 0,
COLOR_SELECT_SATURATION,
COLOR_SELECT_VALUE,
COLOR_SELECT_RED,
COLOR_SELECT_GREEN,
COLOR_SELECT_BLUE,
COLOR_SELECT_ALPHA,
COLOR_SELECT_LCH_LIGHTNESS,
COLOR_SELECT_LCH_CHROMA,
COLOR_SELECT_LCH_HUE,
COLOR_SELECT_HUE_SATURATION,
COLOR_SELECT_HUE_VALUE,
COLOR_SELECT_SATURATION_VALUE,
COLOR_SELECT_RED_GREEN,
COLOR_SELECT_RED_BLUE,
COLOR_SELECT_GREEN_BLUE,
COLOR_SELECT_LCH_HUE_CHROMA,
COLOR_SELECT_LCH_HUE_LIGHTNESS,
COLOR_SELECT_LCH_CHROMA_LIGHTNESS
} ColorSelectFillType;
typedef enum
{
UPDATE_VALUES = 1 << 0,
UPDATE_POS = 1 << 1,
UPDATE_XY_COLOR = 1 << 2,
UPDATE_Z_COLOR = 1 << 3,
UPDATE_CALLER = 1 << 6
} ColorSelectUpdateType;
typedef enum
{
DRAG_NONE,
DRAG_XY,
DRAG_Z
} ColorSelectDragMode;
typedef struct _PikaLCH PikaLCH;
struct _PikaLCH
{
gdouble l, c, h, a;
};
#define PIKA_COLOR_SELECT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), PIKA_TYPE_COLOR_SELECT, PikaColorSelectClass))
#define PIKA_IS_COLOR_SELECT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), PIKA_TYPE_COLOR_SELECT))
#define PIKA_COLOR_SELECT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), PIKA_TYPE_COLOR_SELECT, PikaColorSelectClass))
typedef struct _PikaColorSelectClass PikaColorSelectClass;
struct _PikaColorSelect
{
PikaColorSelector parent_instance;
GtkWidget *toggle_box[3];
GtkWidget *xy_color;
ColorSelectFillType xy_color_fill;
guchar *xy_buf;
gint xy_width;
gint xy_height;
gint xy_rowstride;
gboolean xy_needs_render;
GtkWidget *z_color;
ColorSelectFillType z_color_fill;
guchar *z_buf;
gint z_width;
gint z_height;
gint z_rowstride;
gboolean z_needs_render;
gdouble pos[3];
ColorSelectDragMode drag_mode;
PikaColorConfig *config;
PikaColorTransform *transform;
guchar oog_color[3];
};
struct _PikaColorSelectClass
{
PikaColorSelectorClass parent_class;
};
typedef struct _ColorSelectFill ColorSelectFill;
typedef void (* ColorSelectRenderFunc) (ColorSelectFill *color_select_fill);
struct _ColorSelectFill
{
guchar *buffer;
gint y;
gint width;
gint height;
PikaRGB rgb;
PikaHSV hsv;
PikaLCH lch;
guchar oog_color[3];
ColorSelectRenderFunc render_line;
};
static void pika_color_select_finalize (GObject *object);
static void pika_color_select_togg_visible (PikaColorSelector *selector,
gboolean visible);
static void pika_color_select_togg_sensitive (PikaColorSelector *selector,
gboolean sensitive);
static void pika_color_select_set_color (PikaColorSelector *selector,
const PikaRGB *rgb,
const PikaHSV *hsv);
static void pika_color_select_set_channel (PikaColorSelector *selector,
PikaColorSelectorChannel channel);
static void pika_color_select_set_model_visible
(PikaColorSelector *selector,
PikaColorSelectorModel model,
gboolean visible);
static void pika_color_select_set_config (PikaColorSelector *selector,
PikaColorConfig *config);
static void pika_color_select_channel_toggled (GtkWidget *widget,
PikaColorSelect *select);
static void pika_color_select_update (PikaColorSelect *select,
ColorSelectUpdateType type);
static void pika_color_select_update_values (PikaColorSelect *select);
static void pika_color_select_update_pos (PikaColorSelect *select);
#if 0
static void pika_color_select_drop_color (GtkWidget *widget,
gint x,
gint y,
const PikaRGB *color,
gpointer data);
#endif
static void pika_color_select_xy_size_allocate (GtkWidget *widget,
GtkAllocation *allocation,
PikaColorSelect *select);
static gboolean pika_color_select_xy_draw (GtkWidget *widget,
cairo_t *cr,
PikaColorSelect *select);
static gboolean pika_color_select_xy_events (GtkWidget *widget,
GdkEvent *event,
PikaColorSelect *select);
static void pika_color_select_z_size_allocate (GtkWidget *widget,
GtkAllocation *allocation,
PikaColorSelect *select);
static gboolean pika_color_select_z_draw (GtkWidget *widget,
cairo_t *cr,
PikaColorSelect *select);
static gboolean pika_color_select_z_events (GtkWidget *widget,
GdkEvent *event,
PikaColorSelect *select);
static void pika_color_select_render (GtkWidget *widget,
guchar *buf,
gint width,
gint height,
gint rowstride,
ColorSelectFillType fill_type,
const PikaHSV *hsv,
const PikaRGB *rgb,
const guchar *oog_color);
static void color_select_render_red (ColorSelectFill *csf);
static void color_select_render_green (ColorSelectFill *csf);
static void color_select_render_blue (ColorSelectFill *csf);
static void color_select_render_hue (ColorSelectFill *csf);
static void color_select_render_saturation (ColorSelectFill *csf);
static void color_select_render_value (ColorSelectFill *csf);
static void color_select_render_lch_lightness (ColorSelectFill *csf);
static void color_select_render_lch_chroma (ColorSelectFill *csf);
static void color_select_render_lch_hue (ColorSelectFill *csf);
static void color_select_render_red_green (ColorSelectFill *csf);
static void color_select_render_red_blue (ColorSelectFill *csf);
static void color_select_render_green_blue (ColorSelectFill *csf);
static void color_select_render_hue_saturation (ColorSelectFill *csf);
static void color_select_render_hue_value (ColorSelectFill *csf);
static void color_select_render_saturation_value (ColorSelectFill *csf);
static void color_select_render_lch_chroma_lightness (ColorSelectFill *csf);
static void color_select_render_lch_hue_lightness (ColorSelectFill *csf);
static void color_select_render_lch_hue_chroma (ColorSelectFill *csf);
static void pika_color_select_create_transform (PikaColorSelect *select);
static void pika_color_select_destroy_transform (PikaColorSelect *select);
static void pika_color_select_notify_config (PikaColorConfig *config,
const GParamSpec *pspec,
PikaColorSelect *select);
G_DEFINE_TYPE (PikaColorSelect, pika_color_select, PIKA_TYPE_COLOR_SELECTOR)
#define parent_class pika_color_select_parent_class
static const ColorSelectRenderFunc render_funcs[] =
{
color_select_render_hue,
color_select_render_saturation,
color_select_render_value,
color_select_render_red,
color_select_render_green,
color_select_render_blue,
NULL, /* alpha */
color_select_render_lch_lightness,
color_select_render_lch_chroma,
color_select_render_lch_hue,
color_select_render_hue_saturation,
color_select_render_hue_value,
color_select_render_saturation_value,
color_select_render_red_green,
color_select_render_red_blue,
color_select_render_green_blue,
color_select_render_lch_hue_chroma,
color_select_render_lch_hue_lightness,
color_select_render_lch_chroma_lightness
};
static const Babl *fish_rgb_to_lch = NULL;
static const Babl *fish_lch_to_rgb = NULL;
static const Babl *fish_lch_to_rgb_u8 = NULL;
static void
pika_color_select_class_init (PikaColorSelectClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
PikaColorSelectorClass *selector_class = PIKA_COLOR_SELECTOR_CLASS (klass);
object_class->finalize = pika_color_select_finalize;
selector_class->name = "PIKA";
selector_class->help_id = "pika-colorselector-pika";
selector_class->icon_name = PIKA_ICON_MASCOT;
selector_class->set_toggles_visible = pika_color_select_togg_visible;
selector_class->set_toggles_sensitive = pika_color_select_togg_sensitive;
selector_class->set_color = pika_color_select_set_color;
selector_class->set_channel = pika_color_select_set_channel;
selector_class->set_model_visible = pika_color_select_set_model_visible;
selector_class->set_config = pika_color_select_set_config;
gtk_widget_class_set_css_name (GTK_WIDGET_CLASS (klass), "PikaColorSelect");
fish_rgb_to_lch = babl_fish (babl_format ("R'G'B'A double"),
babl_format ("CIE LCH(ab) double"));
fish_lch_to_rgb = babl_fish (babl_format ("CIE LCH(ab) double"),
babl_format ("R'G'B' double"));
fish_lch_to_rgb_u8 = babl_fish (babl_format ("CIE LCH(ab) double"),
babl_format ("R'G'B' u8"));
}
static void
pika_color_select_init (PikaColorSelect *select)
{
PikaColorSelector *selector = PIKA_COLOR_SELECTOR (select);
GtkWidget *hbox;
GtkWidget *frame;
GtkWidget *vbox;
GEnumClass *model_class;
GEnumClass *channel_class;
const PikaEnumDesc *enum_desc;
PikaColorSelectorModel model;
GSList *group = NULL;
/* Default values. */
select->z_color_fill = COLOR_SELECT_HUE;
select->xy_color_fill = COLOR_SELECT_SATURATION_VALUE;
select->drag_mode = DRAG_NONE;
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 4);
gtk_box_pack_start (GTK_BOX (select), hbox, TRUE, TRUE, 0);
gtk_widget_show (hbox);
/* The x/y component preview */
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (hbox), frame, TRUE, TRUE, 0);
gtk_widget_show (frame);
select->xy_color = gtk_event_box_new ();
gtk_event_box_set_visible_window (GTK_EVENT_BOX (select->xy_color), FALSE);
g_object_add_weak_pointer (G_OBJECT (select->xy_color),
(gpointer) &select->xy_color);
gtk_widget_set_size_request (select->xy_color,
PIKA_COLOR_SELECTOR_SIZE,
PIKA_COLOR_SELECTOR_SIZE);
gtk_widget_set_events (select->xy_color, COLOR_AREA_EVENT_MASK);
gtk_container_add (GTK_CONTAINER (frame), select->xy_color);
gtk_widget_show (select->xy_color);
g_signal_connect (select->xy_color, "size-allocate",
G_CALLBACK (pika_color_select_xy_size_allocate),
select);
g_signal_connect_after (select->xy_color, "draw",
G_CALLBACK (pika_color_select_xy_draw),
select);
g_signal_connect (select->xy_color, "event",
G_CALLBACK (pika_color_select_xy_events),
select);
#if 0
pika_dnd_color_dest_add (select->xy_color, pika_color_select_drop_color,
select);
#endif
/* The z component preview */
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (hbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
select->z_color = gtk_event_box_new ();
gtk_event_box_set_visible_window (GTK_EVENT_BOX (select->z_color), FALSE);
g_object_add_weak_pointer (G_OBJECT (select->z_color),
(gpointer) &select->z_color);
gtk_widget_set_size_request (select->z_color,
PIKA_COLOR_SELECTOR_BAR_SIZE, -1);
gtk_widget_set_events (select->z_color, COLOR_AREA_EVENT_MASK);
gtk_container_add (GTK_CONTAINER (frame), select->z_color);
gtk_widget_show (select->z_color);
g_signal_connect (select->z_color, "size-allocate",
G_CALLBACK (pika_color_select_z_size_allocate),
select);
g_signal_connect_after (select->z_color, "draw",
G_CALLBACK (pika_color_select_z_draw),
select);
g_signal_connect (select->z_color, "event",
G_CALLBACK (pika_color_select_z_events),
select);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
gtk_box_pack_start (GTK_BOX (hbox), vbox, FALSE, FALSE, 0);
gtk_widget_show (vbox);
model_class = g_type_class_ref (PIKA_TYPE_COLOR_SELECTOR_MODEL);
channel_class = g_type_class_ref (PIKA_TYPE_COLOR_SELECTOR_CHANNEL);
for (model = PIKA_COLOR_SELECTOR_MODEL_RGB;
model <= PIKA_COLOR_SELECTOR_MODEL_HSV;
model++)
{
enum_desc = pika_enum_get_desc (model_class, model);
select->toggle_box[model] = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2);
gtk_box_pack_start (GTK_BOX (vbox), select->toggle_box[model],
FALSE, FALSE, 0);
if (pika_color_selector_get_model_visible (selector, model))
gtk_widget_show (select->toggle_box[model]);
/* channel toggles */
{
PikaColorSelectorChannel channel = PIKA_COLOR_SELECTOR_RED;
PikaColorSelectorChannel end_channel;
switch (model)
{
case PIKA_COLOR_SELECTOR_MODEL_RGB:
channel = PIKA_COLOR_SELECTOR_RED;
break;
case PIKA_COLOR_SELECTOR_MODEL_LCH:
channel = PIKA_COLOR_SELECTOR_LCH_LIGHTNESS;
break;
case PIKA_COLOR_SELECTOR_MODEL_HSV:
channel = PIKA_COLOR_SELECTOR_HUE;
break;
default:
/* Should not happen. */
g_return_if_reached ();
break;
}
end_channel = channel + 3;
for (; channel < end_channel; channel++)
{
GtkWidget *button;
enum_desc = pika_enum_get_desc (channel_class, channel);
button = gtk_radio_button_new_with_mnemonic (group,
gettext (enum_desc->value_desc));
group = gtk_radio_button_get_group (GTK_RADIO_BUTTON (button));
gtk_toggle_button_set_mode (GTK_TOGGLE_BUTTON (button), FALSE);
gtk_box_pack_start (GTK_BOX (select->toggle_box[model]), button,
TRUE, TRUE, 0);
gtk_widget_show (button);
g_object_set_data (G_OBJECT (button), "channel",
GINT_TO_POINTER (channel));
if (channel == pika_color_selector_get_channel (selector))
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), TRUE);
pika_help_set_help_data (button, gettext (enum_desc->value_help),
NULL);
g_signal_connect (button, "toggled",
G_CALLBACK (pika_color_select_channel_toggled),
select);
}
}
}
g_type_class_unref (model_class);
g_type_class_unref (channel_class);
}
static void
pika_color_select_finalize (GObject *object)
{
PikaColorSelect *select = PIKA_COLOR_SELECT (object);
g_clear_pointer (&select->xy_buf, g_free);
select->xy_width = 0;
select->xy_height = 0;
select->xy_rowstride = 0;
g_clear_pointer (&select->z_buf, g_free);
select->z_width = 0;
select->z_height = 0;
select->z_rowstride = 0;
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
pika_color_select_togg_visible (PikaColorSelector *selector,
gboolean visible)
{
PikaColorSelect *select = PIKA_COLOR_SELECT (selector);
gint i;
for (i = 0; i < 3; i++)
{
gtk_widget_set_visible (select->toggle_box[i], visible);
}
}
static void
pika_color_select_togg_sensitive (PikaColorSelector *selector,
gboolean sensitive)
{
PikaColorSelect *select = PIKA_COLOR_SELECT (selector);
gint i;
for (i = 0; i < 3; i++)
{
gtk_widget_set_sensitive (select->toggle_box[i], sensitive);
}
}
static void
pika_color_select_set_color (PikaColorSelector *selector,
const PikaRGB *rgb,
const PikaHSV *hsv)
{
PikaColorSelect *select = PIKA_COLOR_SELECT (selector);
pika_color_select_update (select,
UPDATE_POS | UPDATE_XY_COLOR | UPDATE_Z_COLOR);
}
static void
pika_color_select_set_channel (PikaColorSelector *selector,
PikaColorSelectorChannel channel)
{
PikaColorSelect *select = PIKA_COLOR_SELECT (selector);
switch ((ColorSelectFillType) channel)
{
case COLOR_SELECT_HUE:
select->z_color_fill = COLOR_SELECT_HUE;
select->xy_color_fill = COLOR_SELECT_SATURATION_VALUE;
break;
case COLOR_SELECT_SATURATION:
select->z_color_fill = COLOR_SELECT_SATURATION;
select->xy_color_fill = COLOR_SELECT_HUE_VALUE;
break;
case COLOR_SELECT_VALUE:
select->z_color_fill = COLOR_SELECT_VALUE;
select->xy_color_fill = COLOR_SELECT_HUE_SATURATION;
break;
case COLOR_SELECT_RED:
select->z_color_fill = COLOR_SELECT_RED;
select->xy_color_fill = COLOR_SELECT_GREEN_BLUE;
break;
case COLOR_SELECT_GREEN:
select->z_color_fill = COLOR_SELECT_GREEN;
select->xy_color_fill = COLOR_SELECT_RED_BLUE;
break;
case COLOR_SELECT_BLUE:
select->z_color_fill = COLOR_SELECT_BLUE;
select->xy_color_fill = COLOR_SELECT_RED_GREEN;
break;
case COLOR_SELECT_LCH_LIGHTNESS:
select->z_color_fill = COLOR_SELECT_LCH_LIGHTNESS;
select->xy_color_fill = COLOR_SELECT_LCH_HUE_CHROMA;
break;
case COLOR_SELECT_LCH_CHROMA:
select->z_color_fill = COLOR_SELECT_LCH_CHROMA;
select->xy_color_fill = COLOR_SELECT_LCH_HUE_LIGHTNESS;
break;
case COLOR_SELECT_LCH_HUE:
select->z_color_fill = COLOR_SELECT_LCH_HUE;
select->xy_color_fill = COLOR_SELECT_LCH_CHROMA_LIGHTNESS;
break;
default:
break;
}
pika_color_select_update (select,
UPDATE_POS | UPDATE_Z_COLOR | UPDATE_XY_COLOR);
}
static void
pika_color_select_set_model_visible (PikaColorSelector *selector,
PikaColorSelectorModel model,
gboolean visible)
{
PikaColorSelect *select = PIKA_COLOR_SELECT (selector);
gtk_widget_set_visible (select->toggle_box[model], visible);
}
static void
pika_color_select_set_config (PikaColorSelector *selector,
PikaColorConfig *config)
{
PikaColorSelect *select = PIKA_COLOR_SELECT (selector);
if (config != select->config)
{
if (select->config)
{
g_signal_handlers_disconnect_by_func (select->config,
pika_color_select_notify_config,
select);
pika_color_select_destroy_transform (select);
}
g_set_object (&select->config, config);
if (select->config)
{
g_signal_connect (select->config, "notify",
G_CALLBACK (pika_color_select_notify_config),
select);
pika_color_select_notify_config (select->config, NULL, select);
}
}
}
static void
pika_color_select_channel_toggled (GtkWidget *widget,
PikaColorSelect *select)
{
if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget)))
{
PikaColorSelector *selector = PIKA_COLOR_SELECTOR (select);
PikaColorSelectorChannel channel;
channel = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (widget),
"channel"));
pika_color_selector_set_channel (selector, channel);
}
}
static void
pika_color_select_update (PikaColorSelect *select,
ColorSelectUpdateType update)
{
if (update & UPDATE_POS)
pika_color_select_update_pos (select);
if (update & UPDATE_VALUES)
pika_color_select_update_values (select);
if (update & UPDATE_XY_COLOR)
{
select->xy_needs_render = TRUE;
gtk_widget_queue_draw (select->xy_color);
}
if (update & UPDATE_Z_COLOR)
{
select->z_needs_render = TRUE;
gtk_widget_queue_draw (select->z_color);
}
if (update & UPDATE_CALLER)
pika_color_selector_emit_color_changed (PIKA_COLOR_SELECTOR (select));
}
static void
pika_color_select_update_values (PikaColorSelect *select)
{
PikaColorSelector *selector = PIKA_COLOR_SELECTOR (select);
PikaLCH lch;
switch (select->z_color_fill)
{
case COLOR_SELECT_RED:
selector->rgb.g = select->pos[0];
selector->rgb.b = select->pos[1];
selector->rgb.r = select->pos[2];
break;
case COLOR_SELECT_GREEN:
selector->rgb.r = select->pos[0];
selector->rgb.b = select->pos[1];
selector->rgb.g = select->pos[2];
break;
case COLOR_SELECT_BLUE:
selector->rgb.r = select->pos[0];
selector->rgb.g = select->pos[1];
selector->rgb.b = select->pos[2];
break;
case COLOR_SELECT_HUE:
selector->hsv.s = select->pos[0];
selector->hsv.v = select->pos[1];
selector->hsv.h = select->pos[2];
break;
case COLOR_SELECT_SATURATION:
selector->hsv.h = select->pos[0];
selector->hsv.v = select->pos[1];
selector->hsv.s = select->pos[2];
break;
case COLOR_SELECT_VALUE:
selector->hsv.h = select->pos[0];
selector->hsv.s = select->pos[1];
selector->hsv.v = select->pos[2];
break;
case COLOR_SELECT_LCH_LIGHTNESS:
lch.h = select->pos[0] * 360;
lch.c = select->pos[1] * 200;
lch.l = select->pos[2] * 100;
break;
case COLOR_SELECT_LCH_CHROMA:
lch.h = select->pos[0] * 360;
lch.l = select->pos[1] * 100;
lch.c = select->pos[2] * 200;
break;
case COLOR_SELECT_LCH_HUE:
lch.c = select->pos[0] * 200;
lch.l = select->pos[1] * 100;
lch.h = select->pos[2] * 360;
break;
default:
break;
}
switch (select->z_color_fill)
{
case COLOR_SELECT_RED:
case COLOR_SELECT_GREEN:
case COLOR_SELECT_BLUE:
pika_rgb_to_hsv (&selector->rgb, &selector->hsv);
break;
case COLOR_SELECT_HUE:
case COLOR_SELECT_SATURATION:
case COLOR_SELECT_VALUE:
pika_hsv_to_rgb (&selector->hsv, &selector->rgb);
break;
case COLOR_SELECT_LCH_LIGHTNESS:
case COLOR_SELECT_LCH_CHROMA:
case COLOR_SELECT_LCH_HUE:
babl_process (fish_lch_to_rgb, &lch, &selector->rgb, 1);
pika_rgb_to_hsv (&selector->rgb, &selector->hsv);
break;
default:
break;
}
}
static void
pika_color_select_update_pos (PikaColorSelect *select)
{
PikaColorSelector *selector = PIKA_COLOR_SELECTOR (select);
PikaLCH lch;
babl_process (fish_rgb_to_lch, &selector->rgb, &lch, 1);
switch (select->z_color_fill)
{
case COLOR_SELECT_RED:
select->pos[0] = CLAMP (selector->rgb.g, 0.0, 1.0);
select->pos[1] = CLAMP (selector->rgb.b, 0.0, 1.0);
select->pos[2] = CLAMP (selector->rgb.r, 0.0, 1.0);
break;
case COLOR_SELECT_GREEN:
select->pos[0] = CLAMP (selector->rgb.r, 0.0, 1.0);
select->pos[1] = CLAMP (selector->rgb.b, 0.0, 1.0);
select->pos[2] = CLAMP (selector->rgb.g, 0.0, 1.0);
break;
case COLOR_SELECT_BLUE:
select->pos[0] = CLAMP (selector->rgb.r, 0.0, 1.0);
select->pos[1] = CLAMP (selector->rgb.g, 0.0, 1.0);
select->pos[2] = CLAMP (selector->rgb.b, 0.0, 1.0);
break;
case COLOR_SELECT_HUE:
select->pos[0] = CLAMP (selector->hsv.s, 0.0, 1.0);
select->pos[1] = CLAMP (selector->hsv.v, 0.0, 1.0);
select->pos[2] = CLAMP (selector->hsv.h, 0.0, 1.0);
break;
case COLOR_SELECT_SATURATION:
select->pos[0] = CLAMP (selector->hsv.h, 0.0, 1.0);
select->pos[1] = CLAMP (selector->hsv.v, 0.0, 1.0);
select->pos[2] = CLAMP (selector->hsv.s, 0.0, 1.0);
break;
case COLOR_SELECT_VALUE:
select->pos[0] = CLAMP (selector->hsv.h, 0.0, 1.0);
select->pos[1] = CLAMP (selector->hsv.s, 0.0, 1.0);
select->pos[2] = CLAMP (selector->hsv.v, 0.0, 1.0);
break;
case COLOR_SELECT_LCH_LIGHTNESS:
select->pos[0] = CLAMP (lch.h / 360, 0.0, 1.0);
select->pos[1] = CLAMP (lch.c / 200, 0.0, 1.0);
select->pos[2] = CLAMP (lch.l / 100, 0.0, 1.0);
break;
case COLOR_SELECT_LCH_CHROMA:
select->pos[0] = CLAMP (lch.h / 360, 0.0, 1.0);
select->pos[1] = CLAMP (lch.l / 100, 0.0, 1.0);
select->pos[2] = CLAMP (lch.c / 200, 0.0, 1.0);
break;
case COLOR_SELECT_LCH_HUE:
select->pos[0] = CLAMP (lch.c / 200, 0.0, 1.0);
select->pos[1] = CLAMP (lch.l / 100, 0.0, 1.0);
select->pos[2] = CLAMP (lch.h / 360, 0.0, 1.0);
break;
default:
break;
}
}
#if 0
static void
pika_color_select_drop_color (GtkWidget *widget,
gint x,
gint y,
const PikaRGB *color,
gpointer data)
{
PikaColorSelect *select = PIKA_COLOR_SELECT (data);
select->rgb = *color;
pika_color_select_update_hsv_values (select);
pika_color_select_update_lch_values (select);
pika_color_select_update (select,
UPDATE_POS | UPDATE_XY_COLOR | UPDATE_Z_COLOR |
UPDATE_CALLER);
}
#endif
static void
pika_color_select_xy_size_allocate (GtkWidget *widget,
GtkAllocation *allocation,
PikaColorSelect *select)
{
if (allocation->width != select->xy_width ||
allocation->height != select->xy_height)
{
select->xy_width = allocation->width;
select->xy_height = allocation->height;
select->xy_rowstride = (select->xy_width * 3 + 3) & ~3;
g_free (select->xy_buf);
select->xy_buf = g_new (guchar, select->xy_rowstride * select->xy_height);
select->xy_needs_render = TRUE;
}
pika_color_select_update (select, UPDATE_XY_COLOR);
}
static gboolean
pika_color_select_xy_draw (GtkWidget *widget,
cairo_t *cr,
PikaColorSelect *select)
{
GtkAllocation allocation;
GdkPixbuf *pixbuf;
gint x, y;
if (! select->xy_buf)
return FALSE;
if (select->xy_needs_render)
{
PikaColorSelector *selector = PIKA_COLOR_SELECTOR (select);
pika_color_select_render (select->xy_color,
select->xy_buf,
select->xy_width,
select->xy_height,
select->xy_rowstride,
select->xy_color_fill,
&selector->hsv,
&selector->rgb,
select->oog_color);
select->xy_needs_render = FALSE;
}
if (! select->transform)
pika_color_select_create_transform (select);
if (select->transform)
{
const Babl *format = babl_format ("R'G'B' u8");
guchar *buf = g_new (guchar,
select->xy_rowstride * select->xy_height);
guchar *src = select->xy_buf;
guchar *dest = buf;
gint i;
for (i = 0; i < select->xy_height; i++)
{
pika_color_transform_process_pixels (select->transform,
format, src,
format, dest,
select->xy_width);
src += select->xy_rowstride;
dest += select->xy_rowstride;
}
pixbuf = gdk_pixbuf_new_from_data (buf,
GDK_COLORSPACE_RGB,
FALSE,
8,
select->xy_width,
select->xy_height,
select->xy_rowstride,
(GdkPixbufDestroyNotify) g_free, NULL);
}
else
{
pixbuf = gdk_pixbuf_new_from_data (select->xy_buf,
GDK_COLORSPACE_RGB,
FALSE,
8,
select->xy_width,
select->xy_height,
select->xy_rowstride,
NULL, NULL);
}
gtk_widget_get_allocation (select->xy_color, &allocation);
gdk_cairo_set_source_pixbuf (cr, pixbuf, 0, 0);
g_object_unref (pixbuf);
cairo_paint (cr);
x = (allocation.width - 1) * select->pos[0];
y = (allocation.height - 1) - (allocation.height - 1) * select->pos[1];
cairo_move_to (cr, 0, y + 0.5);
cairo_line_to (cr, allocation.width, y + 0.5);
cairo_move_to (cr, x + 0.5, 0);
cairo_line_to (cr, x + 0.5, allocation.height);
cairo_set_line_width (cr, 3.0);
cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 0.6);
cairo_stroke_preserve (cr);
cairo_set_line_width (cr, 1.0);
cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 0.8);
cairo_stroke (cr);
return TRUE;
}
static gboolean
pika_color_select_xy_events (GtkWidget *widget,
GdkEvent *event,
PikaColorSelect *select)
{
GtkAllocation allocation;
gdouble x, y;
switch (event->type)
{
case GDK_BUTTON_PRESS:
{
GdkEventButton *bevent = (GdkEventButton *) event;
if (select->drag_mode != DRAG_NONE || bevent->button != 1)
return FALSE;
x = bevent->x;
y = bevent->y;
gtk_grab_add (widget);
select->drag_mode = DRAG_XY;
}
break;
case GDK_BUTTON_RELEASE:
{
GdkEventButton *bevent = (GdkEventButton *) event;
if (select->drag_mode != DRAG_XY || bevent->button != 1)
return FALSE;
x = bevent->x;
y = bevent->y;
gtk_grab_remove (widget);
select->drag_mode = DRAG_NONE;
}
break;
case GDK_MOTION_NOTIFY:
{
GdkEventMotion *mevent = (GdkEventMotion *) event;
if (select->drag_mode != DRAG_XY)
return FALSE;
x = mevent->x;
y = mevent->y;
}
break;
default:
return FALSE;
}
gtk_widget_get_allocation (select->xy_color, &allocation);
if (allocation.width > 1 && allocation.height > 1)
{
select->pos[0] = x / (allocation.width - 1);
select->pos[1] = 1.0 - y / (allocation.height - 1);
}
select->pos[0] = CLAMP (select->pos[0], 0.0, 1.0);
select->pos[1] = CLAMP (select->pos[1], 0.0, 1.0);
gtk_widget_queue_draw (select->xy_color);
pika_color_select_update (select, UPDATE_VALUES | UPDATE_CALLER);
/* Ask for more motion events in case the event was a hint */
gdk_event_request_motions ((GdkEventMotion *) event);
return TRUE;
}
static void
pika_color_select_z_size_allocate (GtkWidget *widget,
GtkAllocation *allocation,
PikaColorSelect *select)
{
if (allocation->width != select->z_width ||
allocation->height != select->z_height)
{
select->z_width = allocation->width;
select->z_height = allocation->height;
select->z_rowstride = (select->z_width * 3 + 3) & ~3;
g_free (select->z_buf);
select->z_buf = g_new (guchar, select->z_rowstride * select->z_height);
select->z_needs_render = TRUE;
}
pika_color_select_update (select, UPDATE_Z_COLOR);
}
static gboolean
pika_color_select_z_draw (GtkWidget *widget,
cairo_t *cr,
PikaColorSelect *select)
{
GtkAllocation allocation;
GdkPixbuf *pixbuf;
gint y;
if (! select->z_buf)
return FALSE;
if (select->z_needs_render)
{
PikaColorSelector *selector = PIKA_COLOR_SELECTOR (select);
pika_color_select_render (select->z_color,
select->z_buf,
select->z_width,
select->z_height,
select->z_rowstride,
select->z_color_fill,
&selector->hsv,
&selector->rgb,
select->oog_color);
select->z_needs_render = FALSE;
}
gtk_widget_get_allocation (widget, &allocation);
if (! select->transform)
pika_color_select_create_transform (select);
if (select->transform)
{
const Babl *format = babl_format ("R'G'B' u8");
guchar *buf = g_new (guchar,
select->z_rowstride * select->z_height);
guchar *src = select->z_buf;
guchar *dest = buf;
gint i;
for (i = 0; i < select->z_height; i++)
{
pika_color_transform_process_pixels (select->transform,
format, src,
format, dest,
select->z_width);
src += select->z_rowstride;
dest += select->z_rowstride;
}
pixbuf = gdk_pixbuf_new_from_data (buf,
GDK_COLORSPACE_RGB,
FALSE,
8,
select->z_width,
select->z_height,
select->z_rowstride,
(GdkPixbufDestroyNotify) g_free, NULL);
}
else
{
pixbuf = gdk_pixbuf_new_from_data (select->z_buf,
GDK_COLORSPACE_RGB,
FALSE,
8,
select->z_width,
select->z_height,
select->z_rowstride,
NULL, NULL);
}
gdk_cairo_set_source_pixbuf (cr, pixbuf, 0, 0);
g_object_unref (pixbuf);
cairo_paint (cr);
y = (allocation.height - 1) - (allocation.height - 1) * select->pos[2];
cairo_move_to (cr, 0, y + 0.5);
cairo_line_to (cr, allocation.width, y + 0.5);
cairo_set_line_width (cr, 3.0);
cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 0.6);
cairo_stroke_preserve (cr);
cairo_set_line_width (cr, 1.0);
cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 0.8);
cairo_stroke (cr);
return TRUE;
}
static gboolean
pika_color_select_z_events (GtkWidget *widget,
GdkEvent *event,
PikaColorSelect *select)
{
GtkAllocation allocation;
gdouble z;
switch (event->type)
{
case GDK_BUTTON_PRESS:
{
GdkEventButton *bevent = (GdkEventButton *) event;
if (select->drag_mode != DRAG_NONE || bevent->button != 1)
return FALSE;
z = bevent->y;
gtk_grab_add (widget);
select->drag_mode = DRAG_Z;
}
break;
case GDK_BUTTON_RELEASE:
{
GdkEventButton *bevent = (GdkEventButton *) event;
if (select->drag_mode != DRAG_Z || bevent->button != 1)
return FALSE;
z = bevent->y;
gtk_grab_remove (widget);
select->drag_mode = DRAG_NONE;
}
break;
case GDK_MOTION_NOTIFY:
{
GdkEventMotion *mevent = (GdkEventMotion *) event;
if (select->drag_mode != DRAG_Z)
return FALSE;
z = mevent->y;
}
break;
default:
return FALSE;
}
gtk_widget_get_allocation (select->z_color, &allocation);
if (allocation.height > 1)
select->pos[2] = 1.0 - z / (allocation.height - 1);
select->pos[2] = CLAMP (select->pos[2], 0.0, 1.0);
gtk_widget_queue_draw (select->z_color);
pika_color_select_update (select,
UPDATE_VALUES | UPDATE_XY_COLOR | UPDATE_CALLER);
/* Ask for more motion events in case the event was a hint */
gdk_event_request_motions ((GdkEventMotion *) event);
return TRUE;
}
static void
pika_color_select_render (GtkWidget *preview,
guchar *buf,
gint width,
gint height,
gint rowstride,
ColorSelectFillType fill_type,
const PikaHSV *hsv,
const PikaRGB *rgb,
const guchar *oog_color)
{
ColorSelectFill csf;
csf.width = width;
csf.height = height;
csf.hsv = *hsv;
csf.rgb = *rgb;
csf.render_line = render_funcs[fill_type];
csf.oog_color[0] = oog_color[0];
csf.oog_color[1] = oog_color[1];
csf.oog_color[2] = oog_color[2];
babl_process (fish_rgb_to_lch, rgb, &csf.lch, 1);
for (csf.y = 0; csf.y < csf.height; csf.y++)
{
csf.buffer = buf;
csf.render_line (&csf);
buf += rowstride;
}
}
static void
color_select_render_red (ColorSelectFill *csf)
{
guchar *p = csf->buffer;
gint i, r;
r = (csf->height - csf->y + 1) * 255 / csf->height;
r = CLAMP (r, 0, 255);
for (i = 0; i < csf->width; i++)
{
*p++ = r;
*p++ = 0;
*p++ = 0;
}
}
static void
color_select_render_green (ColorSelectFill *csf)
{
guchar *p = csf->buffer;
gint i, g;
g = (csf->height - csf->y + 1) * 255 / csf->height;
g = CLAMP (g, 0, 255);
for (i = 0; i < csf->width; i++)
{
*p++ = 0;
*p++ = g;
*p++ = 0;
}
}
static void
color_select_render_blue (ColorSelectFill *csf)
{
guchar *p = csf->buffer;
gint i, b;
b = (csf->height - csf->y + 1) * 255 / csf->height;
b = CLAMP (b, 0, 255);
for (i = 0; i < csf->width; i++)
{
*p++ = 0;
*p++ = 0;
*p++ = b;
}
}
static void
color_select_render_hue (ColorSelectFill *csf)
{
guchar *p = csf->buffer;
gfloat h, f;
gint r, g, b;
gint i;
h = csf->y * 360.0 / csf->height;
h = CLAMP (360 - h, 0, 360);
h /= 60;
f = (h - (int) h) * 255;
r = g = b = 0;
switch ((int) h)
{
case 0:
r = 255;
g = f;
b = 0;
break;
case 1:
r = 255 - f;
g = 255;
b = 0;
break;
case 2:
r = 0;
g = 255;
b = f;
break;
case 3:
r = 0;
g = 255 - f;
b = 255;
break;
case 4:
r = f;
g = 0;
b = 255;
break;
case 5:
r = 255;
g = 0;
b = 255 - f;
break;
}
for (i = 0; i < csf->width; i++)
{
*p++ = r;
*p++ = g;
*p++ = b;
}
}
static void
color_select_render_saturation (ColorSelectFill *csf)
{
guchar *p = csf->buffer;
gint s;
gint i;
s = csf->y * 255 / csf->height;
s = CLAMP (s, 0, 255);
s = 255 - s;
for (i = 0; i < csf->width; i++)
{
*p++ = s;
*p++ = s;
*p++ = s;
}
}
static void
color_select_render_value (ColorSelectFill *csf)
{
guchar *p = csf->buffer;
gint v;
gint i;
v = csf->y * 255 / csf->height;
v = CLAMP (v, 0, 255);
v = 255 - v;
for (i = 0; i < csf->width; i++)
{
*p++ = v;
*p++ = v;
*p++ = v;
}
}
static void
color_select_render_lch_lightness (ColorSelectFill *csf)
{
guchar *p = csf->buffer;
PikaLCH lch = { 0.0, 0.0, 0.0, 1.0 };
guchar rgb[3];
gint i;
lch.l = (csf->height - 1 - csf->y) * 100.0 / csf->height;
babl_process (fish_lch_to_rgb_u8, &lch, &rgb, 1);
for (i = 0; i < csf->width; i++)
{
*p++ = rgb[0];
*p++ = rgb[1];
*p++ = rgb[2];
}
}
static void
color_select_render_lch_chroma (ColorSelectFill *csf)
{
guchar *p = csf->buffer;
PikaLCH lch = { 80.0, 0.0, 0.0, 1.0 };
guchar rgb[3];
gint i;
lch.c = (csf->height - 1 - csf->y) * 200.0 / csf->height ;
babl_process (fish_lch_to_rgb_u8, &lch, &rgb, 1);
for (i = 0; i < csf->width; i++)
{
*p++ = rgb[0];
*p++ = rgb[1];
*p++ = rgb[2];
}
}
static void
color_select_render_lch_hue (ColorSelectFill *csf)
{
guchar *p = csf->buffer;
PikaLCH lch = { 80.0, 200.0, 0.0, 1.0 };
guchar rgb[3];
gint i;
lch.h = (csf->height - 1 - csf->y) * 360.0 / csf->height;
babl_process (fish_lch_to_rgb_u8, &lch, &rgb, 1);
for (i = 0; i < csf->width; i++)
{
*p++ = rgb[0];
*p++ = rgb[1];
*p++ = rgb[2];
}
}
static void
color_select_render_red_green (ColorSelectFill *csf)
{
guchar *p = csf->buffer;
gfloat r = 0;
gfloat g = 0;
gfloat b = 0;
gfloat dr = 0;
gint i;
b = csf->rgb.b * 255.0;
if (b < 0.0 || b > 255.0)
{
r = csf->oog_color[0];
g = csf->oog_color[1];
b = csf->oog_color[2];
}
else
{
g = (csf->height - csf->y + 1) * 255.0 / csf->height;
dr = 255.0 / csf->width;
}
for (i = 0; i < csf->width; i++)
{
*p++ = r;
*p++ = g;
*p++ = b;
r += dr;
}
}
static void
color_select_render_red_blue (ColorSelectFill *csf)
{
guchar *p = csf->buffer;
gfloat r = 0;
gfloat g = 0;
gfloat b = 0;
gfloat dr = 0;
gint i;
g = csf->rgb.g * 255.0;
if (g < 0.0 || g > 255.0)
{
r = csf->oog_color[0];
g = csf->oog_color[1];
b = csf->oog_color[2];
}
else
{
b = (csf->height - csf->y + 1) * 255.0 / csf->height;
dr = 255.0 / csf->width;
}
for (i = 0; i < csf->width; i++)
{
*p++ = r;
*p++ = g;
*p++ = b;
r += dr;
}
}
static void
color_select_render_green_blue (ColorSelectFill *csf)
{
guchar *p = csf->buffer;
gfloat r = 0;
gfloat g = 0;
gfloat b = 0;
gfloat dg = 0;
gint i;
r = csf->rgb.r * 255.0;
if (r < 0.0 || r > 255.0)
{
r = csf->oog_color[0];
g = csf->oog_color[1];
b = csf->oog_color[2];
}
else
{
b = (csf->height - csf->y + 1) * 255.0 / csf->height;
dg = 255.0 / csf->width;
}
for (i = 0; i < csf->width; i++)
{
*p++ = r;
*p++ = g;
*p++ = b;
g += dg;
}
}
static void
color_select_render_hue_saturation (ColorSelectFill *csf)
{
guchar *p = csf->buffer;
gfloat h, dh, s, v;
gint f;
gint i;
v = csf->hsv.v;
s = (gfloat) csf->y / csf->height;
s = CLAMP (s, 0.0, 1.0);
s = 1.0 - s;
h = 0;
dh = 360.0 / csf->width;
for (i = 0; i < csf->width; i++)
{
gfloat r, g, b;
f = ((h / 60) - (int) (h / 60)) * 255;
switch ((int) (h / 60))
{
default:
case 0:
r = v * 255;
g = v * (255 - (s * (255 - f)));
b = v * 255 * (1 - s);
break;
case 1:
r = v * (255 - s * f);
g = v * 255;
b = v * 255 * (1 - s);
break;
case 2:
r = v * 255 * (1 - s);
g = v *255;
b = v * (255 - (s * (255 - f)));
break;
case 3:
r = v * 255 * (1 - s);
g = v * (255 - s * f);
b = v * 255;
break;
case 4:
r = v * (255 - (s * (255 - f)));
g = v * (255 * (1 - s));
b = v * 255;
break;
case 5:
r = v * 255;
g = v * 255 * (1 - s);
b = v * (255 - s * f);
break;
}
if (r < 0.0 || r > 255.0 ||
g < 0.0 || g > 255.0 ||
b < 0.0 || b > 255.0)
{
*p++ = csf->oog_color[0];
*p++ = csf->oog_color[1];
*p++ = csf->oog_color[2];
}
else
{
*p++ = r;
*p++ = g;
*p++ = b;
}
h += dh;
}
}
static void
color_select_render_hue_value (ColorSelectFill *csf)
{
guchar *p = csf->buffer;
gfloat h, dh, s, v;
gint f;
gint i;
s = csf->hsv.s;
v = (gfloat) csf->y / csf->height;
v = CLAMP (v, 0.0, 1.0);
v = 1.0 - v;
h = 0;
dh = 360.0 / csf->width;
for (i = 0; i < csf->width; i++)
{
gfloat r, g, b;
f = ((h / 60) - (int) (h / 60)) * 255;
switch ((int) (h / 60))
{
default:
case 0:
r = v * 255;
g = v * (255 - (s * (255 - f)));
b = v * 255 * (1 - s);
break;
case 1:
r = v * (255 - s * f);
g = v * 255;
b = v * 255 * (1 - s);
break;
case 2:
r = v * 255 * (1 - s);
g = v *255;
b = v * (255 - (s * (255 - f)));
break;
case 3:
r = v * 255 * (1 - s);
g = v * (255 - s * f);
b = v * 255;
break;
case 4:
r = v * (255 - (s * (255 - f)));
g = v * (255 * (1 - s));
b = v * 255;
break;
case 5:
r = v * 255;
g = v * 255 * (1 - s);
b = v * (255 - s * f);
break;
}
if (r < 0.0 || r > 255.0 ||
g < 0.0 || g > 255.0 ||
b < 0.0 || b > 255.0)
{
*p++ = csf->oog_color[0];
*p++ = csf->oog_color[1];
*p++ = csf->oog_color[2];
}
else
{
*p++ = r;
*p++ = g;
*p++ = b;
}
h += dh;
}
}
static void
color_select_render_saturation_value (ColorSelectFill *csf)
{
guchar *p = csf->buffer;
gfloat h, s, ds, v;
gint f;
gint i;
h = (gfloat) csf->hsv.h * 360.0;
if (h >= 360)
h -= 360;
h /= 60;
f = (h - (gint) h) * 255;
v = (gfloat) csf->y / csf->height;
v = CLAMP (v, 0.0, 1.0);
v = 1.0 - v;
s = 0;
ds = 1.0 / csf->width;
switch ((gint) h)
{
case 0:
for (i = 0; i < csf->width; i++)
{
*p++ = v * 255;
*p++ = v * (255 - (s * (255 - f)));
*p++ = v * 255 * (1 - s);
s += ds;
}
break;
case 1:
for (i = 0; i < csf->width; i++)
{
*p++ = v * (255 - s * f);
*p++ = v * 255;
*p++ = v * 255 * (1 - s);
s += ds;
}
break;
case 2:
for (i = 0; i < csf->width; i++)
{
*p++ = v * 255 * (1 - s);
*p++ = v *255;
*p++ = v * (255 - (s * (255 - f)));
s += ds;
}
break;
case 3:
for (i = 0; i < csf->width; i++)
{
*p++ = v * 255 * (1 - s);
*p++ = v * (255 - s * f);
*p++ = v * 255;
s += ds;
}
break;
case 4:
for (i = 0; i < csf->width; i++)
{
*p++ = v * (255 - (s * (255 - f)));
*p++ = v * (255 * (1 - s));
*p++ = v * 255;
s += ds;
}
break;
case 5:
for (i = 0; i < csf->width; i++)
{
*p++ = v * 255;
*p++ = v * 255 * (1 - s);
*p++ = v * (255 - s * f);
s += ds;
}
break;
}
}
static void
color_select_render_lch_chroma_lightness (ColorSelectFill *csf)
{
guchar *p = csf->buffer;
PikaLCH lch;
gint i;
lch.l = (csf->height - 1 - csf->y) * 100.0 / csf->height;
lch.h = csf->lch.h;
for (i = 0; i < csf->width; i++)
{
PikaRGB rgb;
lch.c = i * 200.0 / csf->width;
babl_process (fish_lch_to_rgb, &lch, &rgb, 1);
if (rgb.r < 0.0 || rgb.r > 1.0 ||
rgb.g < 0.0 || rgb.g > 1.0 ||
rgb.b < 0.0 || rgb.b > 1.0)
{
p[0] = csf->oog_color[0];
p[1] = csf->oog_color[1];
p[2] = csf->oog_color[2];
}
else
{
pika_rgb_get_uchar (&rgb, p, p + 1, p + 2);
}
p += 3;
}
}
static void
color_select_render_lch_hue_lightness (ColorSelectFill *csf)
{
guchar *p = csf->buffer;
PikaLCH lch;
gint i;
lch.l = (csf->height - 1 - csf->y) * 100.0 / csf->height;
lch.c = csf->lch.c;
for (i = 0; i < csf->width; i++)
{
PikaRGB rgb;
lch.h = i * 360.0 / csf->width;
babl_process (fish_lch_to_rgb, &lch, &rgb, 1);
if (rgb.r < 0.0 || rgb.r > 1.0 ||
rgb.g < 0.0 || rgb.g > 1.0 ||
rgb.b < 0.0 || rgb.b > 1.0)
{
p[0] = csf->oog_color[0];
p[1] = csf->oog_color[1];
p[2] = csf->oog_color[2];
}
else
{
pika_rgb_get_uchar (&rgb, p, p + 1, p + 2);
}
p += 3;
}
}
static void
color_select_render_lch_hue_chroma (ColorSelectFill *csf)
{
guchar *p = csf->buffer;
PikaLCH lch;
gint i;
lch.l = csf->lch.l;
lch.c = (csf->height - 1 - csf->y) * 200.0 / csf->height;
for (i = 0; i < csf->width; i++)
{
PikaRGB rgb;
lch.h = i * 360.0 / csf->width;
babl_process (fish_lch_to_rgb, &lch, &rgb, 1);
if (rgb.r < 0.0 || rgb.r > 1.0 ||
rgb.g < 0.0 || rgb.g > 1.0 ||
rgb.b < 0.0 || rgb.b > 1.0)
{
p[0] = csf->oog_color[0];
p[1] = csf->oog_color[1];
p[2] = csf->oog_color[2];
}
else
{
pika_rgb_get_uchar (&rgb, p, p + 1, p + 2);
}
p += 3;
}
}
static void
pika_color_select_create_transform (PikaColorSelect *select)
{
if (select->config)
{
static PikaColorProfile *profile = NULL;
const Babl *format = babl_format ("cairo-RGB24");
if (G_UNLIKELY (! profile))
profile = pika_color_profile_new_rgb_srgb ();
select->transform = pika_widget_get_color_transform (GTK_WIDGET (select),
select->config,
profile,
format,
format,
NULL,
PIKA_COLOR_RENDERING_INTENT_RELATIVE_COLORIMETRIC,
FALSE);
}
}
static void
pika_color_select_destroy_transform (PikaColorSelect *select)
{
if (select->transform)
{
g_object_unref (select->transform);
select->transform = NULL;
}
gtk_widget_queue_draw (select->xy_color);
gtk_widget_queue_draw (select->z_color);
}
static void
pika_color_select_notify_config (PikaColorConfig *config,
const GParamSpec *pspec,
PikaColorSelect *select)
{
PikaRGB color;
pika_color_select_destroy_transform (select);
pika_color_config_get_out_of_gamut_color (config, &color);
pika_rgb_get_uchar (&color,
select->oog_color,
select->oog_color + 1,
select->oog_color + 2);
select->xy_needs_render = TRUE;
select->z_needs_render = TRUE;
}