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PIKApp/libpikawidgets/pikacolorselector.c

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/* LIBPIKA - The PIKA Library
* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
*
* pikacolorselector.c
* Copyright (C) 2002 Michael Natterer <mitch@gimp.org>
*
* based on:
* Colour selector module
* Copyright (C) 1999 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
* 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
* <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gegl.h>
#include <gtk/gtk.h>
#include "libpikacolor/pikacolor.h"
#include "libpikaconfig/pikaconfig.h"
#include "pikawidgetstypes.h"
#include "pikacolorselector.h"
#include "pikaicons.h"
#include "pikawidgetsmarshal.h"
/**
* SECTION: pikacolorselector
* @title: PikaColorSelector
* @short_description: Pluggable PIKA color selector modules.
* @see_also: #GModule, #GTypeModule, #PikaModule
*
* Functions and definitions for creating pluggable PIKA color
* selector modules.
**/
enum
{
COLOR_CHANGED,
CHANNEL_CHANGED,
MODEL_VISIBLE_CHANGED,
LAST_SIGNAL
};
struct _PikaColorSelectorPrivate
{
gboolean model_visible[3];
};
#define GET_PRIVATE(obj) (((PikaColorSelector *) (obj))->priv)
static void pika_color_selector_dispose (GObject *object);
G_DEFINE_TYPE_WITH_PRIVATE (PikaColorSelector, pika_color_selector,
GTK_TYPE_BOX)
#define parent_class pika_color_selector_parent_class
static guint selector_signals[LAST_SIGNAL] = { 0 };
static void
pika_color_selector_class_init (PikaColorSelectorClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->dispose = pika_color_selector_dispose;
selector_signals[COLOR_CHANGED] =
g_signal_new ("color-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (PikaColorSelectorClass, color_changed),
NULL, NULL,
_pika_widgets_marshal_VOID__BOXED_BOXED,
G_TYPE_NONE, 2,
PIKA_TYPE_RGB,
PIKA_TYPE_RGB);
selector_signals[CHANNEL_CHANGED] =
g_signal_new ("channel-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (PikaColorSelectorClass, channel_changed),
NULL, NULL, NULL,
G_TYPE_NONE, 1,
PIKA_TYPE_COLOR_SELECTOR_CHANNEL);
selector_signals[MODEL_VISIBLE_CHANGED] =
g_signal_new ("model-visible-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (PikaColorSelectorClass, model_visible_changed),
NULL, NULL,
_pika_widgets_marshal_VOID__ENUM_BOOLEAN,
G_TYPE_NONE, 2,
PIKA_TYPE_COLOR_SELECTOR_MODEL,
G_TYPE_BOOLEAN);
klass->name = "Unnamed";
klass->help_id = NULL;
klass->icon_name = PIKA_ICON_PALETTE;
klass->set_toggles_visible = NULL;
klass->set_toggles_sensitive = NULL;
klass->set_show_alpha = NULL;
klass->set_color = NULL;
klass->set_channel = NULL;
klass->set_model_visible = NULL;
klass->color_changed = NULL;
klass->channel_changed = NULL;
klass->model_visible_changed = NULL;
klass->set_config = NULL;
}
static void
pika_color_selector_init (PikaColorSelector *selector)
{
PikaColorSelectorPrivate *priv;
selector->priv = pika_color_selector_get_instance_private (selector);
priv = GET_PRIVATE (selector);
selector->toggles_visible = TRUE;
selector->toggles_sensitive = TRUE;
selector->show_alpha = TRUE;
gtk_orientable_set_orientation (GTK_ORIENTABLE (selector),
GTK_ORIENTATION_VERTICAL);
pika_rgba_set (&selector->rgb, 0.0, 0.0, 0.0, 1.0);
pika_rgb_to_hsv (&selector->rgb, &selector->hsv);
selector->channel = PIKA_COLOR_SELECTOR_RED;
priv->model_visible[PIKA_COLOR_SELECTOR_MODEL_RGB] = TRUE;
priv->model_visible[PIKA_COLOR_SELECTOR_MODEL_LCH] = TRUE;
priv->model_visible[PIKA_COLOR_SELECTOR_MODEL_HSV] = FALSE;
}
static void
pika_color_selector_dispose (GObject *object)
{
pika_color_selector_set_config (PIKA_COLOR_SELECTOR (object), NULL);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
/* public functions */
/**
* pika_color_selector_new:
* @selector_type: The #GType of the selector to create.
* @rgb: The initial color to be edited.
* @hsv: The same color in HSV.
* @channel: The selector's initial channel.
*
* Creates a new #PikaColorSelector widget of type @selector_type.
*
* Note that this is mostly internal API to be used by other widgets.
*
* Please use pika_color_selection_new() for the "PIKA-typical" color
* selection widget. Also see pika_color_button_new().
*
* Retunn value: the new #PikaColorSelector widget.
**/
GtkWidget *
pika_color_selector_new (GType selector_type,
const PikaRGB *rgb,
const PikaHSV *hsv,
PikaColorSelectorChannel channel)
{
PikaColorSelector *selector;
g_return_val_if_fail (g_type_is_a (selector_type, PIKA_TYPE_COLOR_SELECTOR),
NULL);
g_return_val_if_fail (rgb != NULL, NULL);
g_return_val_if_fail (hsv != NULL, NULL);
selector = g_object_new (selector_type, NULL);
pika_color_selector_set_color (selector, rgb, hsv);
pika_color_selector_set_channel (selector, channel);
return GTK_WIDGET (selector);
}
/**
* pika_color_selector_set_toggles_visible:
* @selector: A #PikaColorSelector widget.
* @visible: The new @visible setting.
*
* Sets the @visible property of the @selector's toggles.
*
* This function has no effect if this @selector instance has no
* toggles to switch channels.
**/
void
pika_color_selector_set_toggles_visible (PikaColorSelector *selector,
gboolean visible)
{
g_return_if_fail (PIKA_IS_COLOR_SELECTOR (selector));
if (selector->toggles_visible != visible)
{
PikaColorSelectorClass *selector_class;
selector->toggles_visible = visible ? TRUE : FALSE;
selector_class = PIKA_COLOR_SELECTOR_GET_CLASS (selector);
if (selector_class->set_toggles_visible)
selector_class->set_toggles_visible (selector, visible);
}
}
/**
* pika_color_selector_get_toggles_visible:
* @selector: A #PikaColorSelector widget.
*
* Returns the @visible property of the @selector's toggles.
*
* Returns: %TRUE if the #PikaColorSelector's toggles are visible.
*
* Since: 2.10
**/
gboolean
pika_color_selector_get_toggles_visible (PikaColorSelector *selector)
{
g_return_val_if_fail (PIKA_IS_COLOR_SELECTOR (selector), FALSE);
return selector->toggles_visible;
}
/**
* pika_color_selector_set_toggles_sensitive:
* @selector: A #PikaColorSelector widget.
* @sensitive: The new @sensitive setting.
*
* Sets the @sensitive property of the @selector's toggles.
*
* This function has no effect if this @selector instance has no
* toggles to switch channels.
**/
void
pika_color_selector_set_toggles_sensitive (PikaColorSelector *selector,
gboolean sensitive)
{
g_return_if_fail (PIKA_IS_COLOR_SELECTOR (selector));
if (selector->toggles_sensitive != sensitive)
{
PikaColorSelectorClass *selector_class;
selector->toggles_sensitive = sensitive ? TRUE : FALSE;
selector_class = PIKA_COLOR_SELECTOR_GET_CLASS (selector);
if (selector_class->set_toggles_sensitive)
selector_class->set_toggles_sensitive (selector, sensitive);
}
}
/**
* pika_color_selector_get_toggles_sensitive:
* @selector: A #PikaColorSelector widget.
*
* Returns the @sensitive property of the @selector's toggles.
*
* Returns: %TRUE if the #PikaColorSelector's toggles are sensitive.
*
* Since: 2.10
**/
gboolean
pika_color_selector_get_toggles_sensitive (PikaColorSelector *selector)
{
g_return_val_if_fail (PIKA_IS_COLOR_SELECTOR (selector), FALSE);
return selector->toggles_sensitive;
}
/**
* pika_color_selector_set_show_alpha:
* @selector: A #PikaColorSelector widget.
* @show_alpha: The new @show_alpha setting.
*
* Sets the @show_alpha property of the @selector widget.
**/
void
pika_color_selector_set_show_alpha (PikaColorSelector *selector,
gboolean show_alpha)
{
g_return_if_fail (PIKA_IS_COLOR_SELECTOR (selector));
if (show_alpha != selector->show_alpha)
{
PikaColorSelectorClass *selector_class;
selector->show_alpha = show_alpha ? TRUE : FALSE;
selector_class = PIKA_COLOR_SELECTOR_GET_CLASS (selector);
if (selector_class->set_show_alpha)
selector_class->set_show_alpha (selector, show_alpha);
}
}
/**
* pika_color_selector_get_show_alpha:
* @selector: A #PikaColorSelector widget.
*
* Returns the @selector's @show_alpha property.
*
* Returns: %TRUE if the #PikaColorSelector has alpha controls.
*
* Since: 2.10
**/
gboolean
pika_color_selector_get_show_alpha (PikaColorSelector *selector)
{
g_return_val_if_fail (PIKA_IS_COLOR_SELECTOR (selector), FALSE);
return selector->show_alpha;
}
/**
* pika_color_selector_set_color:
* @selector: A #PikaColorSelector widget.
* @rgb: The new color.
* @hsv: The same color in HSV.
*
* Sets the color shown in the @selector widget.
**/
void
pika_color_selector_set_color (PikaColorSelector *selector,
const PikaRGB *rgb,
const PikaHSV *hsv)
{
PikaColorSelectorClass *selector_class;
g_return_if_fail (PIKA_IS_COLOR_SELECTOR (selector));
g_return_if_fail (rgb != NULL);
g_return_if_fail (hsv != NULL);
selector->rgb = *rgb;
selector->hsv = *hsv;
selector_class = PIKA_COLOR_SELECTOR_GET_CLASS (selector);
if (selector_class->set_color)
selector_class->set_color (selector, rgb, hsv);
pika_color_selector_emit_color_changed (selector);
}
/**
* pika_color_selector_get_color:
* @selector: A #PikaColorSelector widget.
* @rgb: (out caller-allocates): Return location for the color.
* @hsv: (out caller-allocates): Return location for the same same
* color in HSV.
*
* Retrieves the color shown in the @selector widget.
*
* Since: 2.10
**/
void
pika_color_selector_get_color (PikaColorSelector *selector,
PikaRGB *rgb,
PikaHSV *hsv)
{
g_return_if_fail (PIKA_IS_COLOR_SELECTOR (selector));
g_return_if_fail (rgb != NULL);
g_return_if_fail (hsv != NULL);
*rgb = selector->rgb;
*hsv = selector->hsv;
}
/**
* pika_color_selector_set_channel:
* @selector: A #PikaColorSelector widget.
* @channel: The new @channel setting.
*
* Sets the @channel property of the @selector widget.
*
* Changes between displayed channels if this @selector instance has
* the ability to show different channels.
* This will also update the color model if needed.
**/
void
pika_color_selector_set_channel (PikaColorSelector *selector,
PikaColorSelectorChannel channel)
{
g_return_if_fail (PIKA_IS_COLOR_SELECTOR (selector));
if (channel != selector->channel)
{
PikaColorSelectorClass *selector_class;
PikaColorSelectorModel model = -1;
selector->channel = channel;
switch (channel)
{
case PIKA_COLOR_SELECTOR_RED:
case PIKA_COLOR_SELECTOR_GREEN:
case PIKA_COLOR_SELECTOR_BLUE:
model = PIKA_COLOR_SELECTOR_MODEL_RGB;
break;
case PIKA_COLOR_SELECTOR_HUE:
case PIKA_COLOR_SELECTOR_SATURATION:
case PIKA_COLOR_SELECTOR_VALUE:
model = PIKA_COLOR_SELECTOR_MODEL_HSV;
break;
case PIKA_COLOR_SELECTOR_LCH_LIGHTNESS:
case PIKA_COLOR_SELECTOR_LCH_CHROMA:
case PIKA_COLOR_SELECTOR_LCH_HUE:
model = PIKA_COLOR_SELECTOR_MODEL_LCH;
break;
case PIKA_COLOR_SELECTOR_ALPHA:
/* Alpha channel does not change the color model. */
break;
default:
/* Should not happen. */
g_return_if_reached ();
break;
}
selector_class = PIKA_COLOR_SELECTOR_GET_CLASS (selector);
if (selector_class->set_channel)
selector_class->set_channel (selector, channel);
pika_color_selector_emit_channel_changed (selector);
if (model != -1)
{
/* make visibility of LCH and HSV mutuallky exclusive */
if (model == PIKA_COLOR_SELECTOR_MODEL_HSV)
{
pika_color_selector_set_model_visible (selector,
PIKA_COLOR_SELECTOR_MODEL_LCH,
FALSE);
}
else if (model == PIKA_COLOR_SELECTOR_MODEL_LCH)
{
pika_color_selector_set_model_visible (selector,
PIKA_COLOR_SELECTOR_MODEL_HSV,
FALSE);
}
pika_color_selector_set_model_visible (selector, model, TRUE);
}
}
}
/**
* pika_color_selector_get_channel:
* @selector: A #PikaColorSelector widget.
*
* Returns the @selector's current channel.
*
* Returns: The #PikaColorSelectorChannel currently shown by the
* @selector.
*
* Since: 2.10
**/
PikaColorSelectorChannel
pika_color_selector_get_channel (PikaColorSelector *selector)
{
g_return_val_if_fail (PIKA_IS_COLOR_SELECTOR (selector),
PIKA_COLOR_SELECTOR_RED);
return selector->channel;
}
/**
* pika_color_selector_set_model_visible:
* @selector: A #PikaColorSelector widget.
* @model: The affected #PikaColorSelectorModel.
* @visible: The new visible setting.
*
* Sets the @model visible/invisible on the @selector widget.
*
* Toggles visibility of displayed models if this @selector instance
* has the ability to show different color models.
*
* Since: 2.10
**/
void
pika_color_selector_set_model_visible (PikaColorSelector *selector,
PikaColorSelectorModel model,
gboolean visible)
{
PikaColorSelectorPrivate *priv;
g_return_if_fail (PIKA_IS_COLOR_SELECTOR (selector));
priv = GET_PRIVATE (selector);
visible = visible ? TRUE : FALSE;
if (visible != priv->model_visible[model])
{
PikaColorSelectorClass *selector_class;
priv->model_visible[model] = visible;
selector_class = PIKA_COLOR_SELECTOR_GET_CLASS (selector);
if (selector_class->set_model_visible)
selector_class->set_model_visible (selector, model, visible);
pika_color_selector_emit_model_visible_changed (selector, model);
}
}
/**
* pika_color_selector_get_model_visible:
* @selector: A #PikaColorSelector widget.
* @model: The #PikaColorSelectorModel.
*
* Returns: whether @model is visible in @selector.
*
* Since: 2.10
**/
gboolean
pika_color_selector_get_model_visible (PikaColorSelector *selector,
PikaColorSelectorModel model)
{
PikaColorSelectorPrivate *priv;
g_return_val_if_fail (PIKA_IS_COLOR_SELECTOR (selector), FALSE);
priv = GET_PRIVATE (selector);
return priv->model_visible[model];
}
/**
* pika_color_selector_emit_color_changed:
* @selector: A #PikaColorSelector widget.
*
* Emits the "color-changed" signal.
*/
void
pika_color_selector_emit_color_changed (PikaColorSelector *selector)
{
g_return_if_fail (PIKA_IS_COLOR_SELECTOR (selector));
g_signal_emit (selector, selector_signals[COLOR_CHANGED], 0,
&selector->rgb, &selector->hsv);
}
/**
* pika_color_selector_emit_channel_changed:
* @selector: A #PikaColorSelector widget.
*
* Emits the "channel-changed" signal.
*/
void
pika_color_selector_emit_channel_changed (PikaColorSelector *selector)
{
g_return_if_fail (PIKA_IS_COLOR_SELECTOR (selector));
g_signal_emit (selector, selector_signals[CHANNEL_CHANGED], 0,
selector->channel);
}
/**
* pika_color_selector_emit_model_visible_changed:
* @selector: A #PikaColorSelector widget.
* @model: The #PikaColorSelectorModel where visibility changed.
*
* Emits the "model-visible-changed" signal.
*
* Since: 2.10
*/
void
pika_color_selector_emit_model_visible_changed (PikaColorSelector *selector,
PikaColorSelectorModel model)
{
PikaColorSelectorPrivate *priv;
g_return_if_fail (PIKA_IS_COLOR_SELECTOR (selector));
priv = GET_PRIVATE (selector);
g_signal_emit (selector, selector_signals[MODEL_VISIBLE_CHANGED], 0,
model, priv->model_visible[model]);
}
/**
* pika_color_selector_set_config:
* @selector: a #PikaColorSelector widget.
* @config: a #PikaColorConfig object.
*
* Sets the color management configuration to use with this color selector.
*
* Since: 2.4
*/
void
pika_color_selector_set_config (PikaColorSelector *selector,
PikaColorConfig *config)
{
PikaColorSelectorClass *selector_class;
g_return_if_fail (PIKA_IS_COLOR_SELECTOR (selector));
g_return_if_fail (config == NULL || PIKA_IS_COLOR_CONFIG (config));
selector_class = PIKA_COLOR_SELECTOR_GET_CLASS (selector);
if (selector_class->set_config)
selector_class->set_config (selector, config);
}
/**
* pika_color_selector_set_simulation
* @selector: a #PikaColorSelector widget.
* @profile: a #PikaColorProfile object.
* @intent: a #PikaColorRenderingIntent enum.
* @bpc: a gboolean.
*
* Sets the simulation options to use with this color selector.
*
* Since: 3.0
*/
void
pika_color_selector_set_simulation (PikaColorSelector *selector,
PikaColorProfile *profile,
PikaColorRenderingIntent intent,
gboolean bpc)
{
PikaColorSelectorClass *selector_class;
g_return_if_fail (PIKA_IS_COLOR_SELECTOR (selector));
g_return_if_fail (profile == NULL || PIKA_IS_COLOR_PROFILE (profile));
selector_class = PIKA_COLOR_SELECTOR_GET_CLASS (selector);
if (selector_class->set_simulation)
selector_class->set_simulation (selector, profile, intent, bpc);
}
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