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gimp/modules/color-selector-wheel.c

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/* GIMP Wheel ColorSelector
* Copyright (C) 2008 Michael Natterer <mitch@gimp.org>
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <gtk/gtk.h>
#include "libgimpcolor/gimpcolor.h"
#include "libgimpmath/gimpmath.h"
#include "libgimpmodule/gimpmodule.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "libgimp/libgimp-intl.h"
#ifdef __GNUC__
#warning FIXME: remove hacks here as soon as we depend on GTK 2.14
#endif
#ifndef __GTK_HSV_H__
#define GTK_TYPE_HSV (gtk_hsv_get_type ())
#define GTK_HSV(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_HSV, GtkHSV))
typedef struct _GtkHSV GtkHSV;
GType gtk_hsv_get_type (void) G_GNUC_CONST;
GtkWidget* gtk_hsv_new (void);
void gtk_hsv_set_color (GtkHSV *hsv,
double h,
double s,
double v);
void gtk_hsv_get_color (GtkHSV *hsv,
gdouble *h,
gdouble *s,
gdouble *v);
void gtk_hsv_set_metrics (GtkHSV *hsv,
gint size,
gint ring_width);
#endif /* __GTK_HSV_H__ */
#define COLORSEL_TYPE_WHEEL (colorsel_wheel_get_type ())
#define COLORSEL_WHEEL(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), COLORSEL_TYPE_WHEEL, ColorselWheel))
#define COLORSEL_WHEEL_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), COLORSEL_TYPE_WHEEL, ColorselWheelClass))
#define COLORSEL_IS_WHEEL(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), COLORSEL_TYPE_WHEEL))
#define COLORSEL_IS_WHEEL_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), COLORSEL_TYPE_WHEEL))
typedef struct _ColorselWheel ColorselWheel;
typedef struct _ColorselWheelClass ColorselWheelClass;
struct _ColorselWheel
{
GimpColorSelector parent_instance;
GtkWidget *hsv;
};
struct _ColorselWheelClass
{
GimpColorSelectorClass parent_class;
};
GType colorsel_wheel_get_type (void);
static void colorsel_wheel_set_color (GimpColorSelector *selector,
const GimpRGB *rgb,
const GimpHSV *hsv);
static void colorsel_wheel_size_allocate (GtkWidget *frame,
GtkAllocation *allocation,
ColorselWheel *wheel);
static void colorsel_wheel_size_request (GtkWidget *dont_use,
GtkRequisition *requisition,
ColorselWheel *wheel);
static void colorsel_wheel_changed (GtkHSV *hsv,
GimpColorSelector *selector);
static const GimpModuleInfo colorsel_wheel_info =
{
GIMP_MODULE_ABI_VERSION,
N_("HSV color wheel"),
"Michael Natterer <mitch@gimp.org>",
"v1.0",
"(c) 2008, released under the GPL",
"08 Aug 2008"
};
G_DEFINE_DYNAMIC_TYPE (ColorselWheel, colorsel_wheel,
GIMP_TYPE_COLOR_SELECTOR)
G_MODULE_EXPORT const GimpModuleInfo *
gimp_module_query (GTypeModule *module)
{
return &colorsel_wheel_info;
}
G_MODULE_EXPORT gboolean
gimp_module_register (GTypeModule *module)
{
colorsel_wheel_register_type (module);
return TRUE;
}
static void
colorsel_wheel_class_init (ColorselWheelClass *klass)
{
GimpColorSelectorClass *selector_class = GIMP_COLOR_SELECTOR_CLASS (klass);
selector_class->name = _("Wheel");
selector_class->help_id = "gimp-colorselector-triangle";
selector_class->stock_id = GIMP_STOCK_COLOR_TRIANGLE;
selector_class->set_color = colorsel_wheel_set_color;
}
static void
colorsel_wheel_class_finalize (ColorselWheelClass *klass)
{
}
static void
colorsel_wheel_init (ColorselWheel *wheel)
{
GtkWidget *frame;
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (wheel), frame, TRUE, TRUE, 0);
gtk_widget_show (frame);
g_signal_connect (frame, "size-allocate",
G_CALLBACK (colorsel_wheel_size_allocate),
wheel);
if (gtk_check_version (2, 13, 7))
{
/* for old versions of GtkHSV, we pack the thing into an alignment
* and force the alignment to have a small requisition, because
* it will be smart enough to deal with a larger allocation
*/
GtkWidget *alignment;
alignment = gtk_alignment_new (0.5, 0.5, 0.0, 0.0);
gtk_container_add (GTK_CONTAINER (frame), alignment);
gtk_widget_show (alignment);
g_signal_connect (alignment, "size-request",
G_CALLBACK (colorsel_wheel_size_request),
wheel);
frame = alignment;
}
wheel->hsv = gtk_hsv_new ();
gtk_container_add (GTK_CONTAINER (frame), wheel->hsv);
gtk_widget_show (wheel->hsv);
if (! gtk_check_version (2, 13, 7))
{
/* for new versions of GtkHSV we don't need above alignment hack,
* because it is smart enough by itself to cope with a larger
* allocation than it requested
*/
g_signal_connect (wheel->hsv, "size-request",
G_CALLBACK (colorsel_wheel_size_request),
wheel);
}
g_signal_connect (wheel->hsv, "changed",
G_CALLBACK (colorsel_wheel_changed),
wheel);
}
static void
colorsel_wheel_set_color (GimpColorSelector *selector,
const GimpRGB *rgb,
const GimpHSV *hsv)
{
ColorselWheel *wheel = COLORSEL_WHEEL (selector);
gtk_hsv_set_color (GTK_HSV (wheel->hsv), hsv->h, hsv->s, hsv->v);
}
static void
colorsel_wheel_size_allocate (GtkWidget *frame,
GtkAllocation *allocation,
ColorselWheel *wheel)
{
GtkStyle *style = gtk_widget_get_style (frame);
gint focus_width;
gint focus_padding;
gint size;
gtk_widget_style_get (frame,
"focus-line-width", &focus_width,
"focus-padding", &focus_padding,
NULL);
size = (MIN (allocation->width, allocation->height) -
2 * MAX (style->xthickness, style->ythickness) -
2 * (focus_width + focus_padding));
gtk_hsv_set_metrics (GTK_HSV (wheel->hsv), size, size / 10);
}
static void
colorsel_wheel_size_request (GtkWidget *dont_use,
GtkRequisition *requisition,
ColorselWheel *wheel)
{
gint focus_width;
gint focus_padding;
gtk_widget_style_get (wheel->hsv,
"focus-line-width", &focus_width,
"focus-padding", &focus_padding,
NULL);
requisition->width = 2 * (focus_width + focus_padding);
requisition->height = 2 * (focus_width + focus_padding);
}
static void
colorsel_wheel_changed (GtkHSV *hsv,
GimpColorSelector *selector)
{
gtk_hsv_get_color (hsv,
&selector->hsv.h,
&selector->hsv.s,
&selector->hsv.v);
gimp_hsv_to_rgb (&selector->hsv, &selector->rgb);
gimp_color_selector_color_changed (selector);
}
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