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gtk2/gtk/gtkcolorsel.c
Tim Janik 90408c4641 changed reversed_[12] to reserved_[12] in gtk_*_get_type functions. 
Sat Jul  4 13:16:24 1998  Tim Janik  <timj@gtk.org>

        * gtk/*.c: changed reversed_[12] to reserved_[12] in gtk_*_get_type
        functions.

        * gdk/gdkwindow.c:
        * gdk/gdkvisual.c: check for some pointer values to be != NULL, prior
        to XFree() calls.
1998-07-04 15:31:30 +00:00

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/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 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 Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <gdk/gdk.h>
#include "gtkcolorsel.h"
#include "gtkhbbox.h"
/*
* If you change the way the color values are stored,
* please make sure to update the drag & drop support so it sends
* across all the color info (currently RGBA). - Elliot
*/
#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif /* M_PI */
#define DEGTORAD(a) (2.0*M_PI*a/360.0)
#define SQR(a) (a*a)
#define TIMER_DELAY 300
#define CIRCLE_RADIUS 65
#define WHEEL_WIDTH 2*CIRCLE_RADIUS+2
#define WHEEL_HEIGHT 2*CIRCLE_RADIUS+2
#define VALUE_WIDTH 32
#define VALUE_HEIGHT WHEEL_HEIGHT
#define SAMPLE_WIDTH WHEEL_WIDTH+VALUE_WIDTH+5
#define SAMPLE_HEIGHT 28
static void gtk_color_selection_class_init (GtkColorSelectionClass *klass);
static void gtk_color_selection_init (GtkColorSelection *colorsel);
static void gtk_color_selection_dialog_class_init(GtkColorSelectionDialogClass *klass);
static void gtk_color_selection_dialog_init(GtkColorSelectionDialog *colorseldiag);
enum
{
COLOR_CHANGED,
LAST_SIGNAL
};
enum
{
RGB_INPUTS = 1 << 0,
HSV_INPUTS = 1 << 1,
OPACITY_INPUTS = 1 << 2
};
enum
{
SCALE,
ENTRY,
BOTH
};
enum
{
HUE,
SATURATION,
VALUE,
RED,
GREEN,
BLUE,
OPACITY,
NUM_CHANNELS
};
typedef struct
{
gchar *label;
gfloat lower, upper, step_inc, page_inc;
GtkSignalFunc updater;
} scale_val_type;
#define HSV_TO_RGB() gtk_color_selection_hsv_to_rgb( \
colorsel->values[HUE], \
colorsel->values[SATURATION], \
colorsel->values[VALUE], \
&colorsel->values[RED], \
&colorsel->values[GREEN], \
&colorsel->values[BLUE])
#define RGB_TO_HSV() gtk_color_selection_rgb_to_hsv( \
colorsel->values[RED], \
colorsel->values[GREEN], \
colorsel->values[BLUE], \
&colorsel->values[HUE], \
&colorsel->values[SATURATION], \
&colorsel->values[VALUE])
static void gtk_color_selection_hsv_updater (GtkWidget *widget,
gpointer data);
static void gtk_color_selection_rgb_updater (GtkWidget *widget,
gpointer data);
static void gtk_color_selection_opacity_updater (GtkWidget *widget,
gpointer data);
static void gtk_color_selection_realize (GtkWidget *widget);
static void gtk_color_selection_unrealize (GtkWidget *widget);
static void gtk_color_selection_finalize (GtkObject *object);
static void gtk_color_selection_color_changed (GtkColorSelection *colorsel);
static void gtk_color_selection_update_input (GtkWidget *scale,
GtkWidget *entry,
gdouble value);
static void gtk_color_selection_update_inputs (GtkColorSelection *colorsel,
gint inputs,
gint which);
static void gtk_color_selection_update_value (GtkColorSelection *colorsel,
gint y);
static void gtk_color_selection_update_wheel (GtkColorSelection *colorsel,
gint x,
gint y);
static void gtk_color_selection_value_resize (GtkWidget *widget,
gpointer data);
static gint gtk_color_selection_value_events (GtkWidget *area,
GdkEvent *event);
static gint gtk_color_selection_value_timeout (GtkColorSelection *colorsel);
static void gtk_color_selection_wheel_resize (GtkWidget *widget,
gpointer data);
static gint gtk_color_selection_wheel_events (GtkWidget *area,
GdkEvent *event);
static gint gtk_color_selection_wheel_timeout (GtkColorSelection *colorsel);
static void gtk_color_selection_sample_resize (GtkWidget *widget,
gpointer data);
static void gtk_color_selection_drop_handle (GtkWidget *widget,
GdkEvent *event,
GtkWidget *theclorsel);
static void gtk_color_selection_drag_handle (GtkWidget *widget,
GdkEvent *event,
GtkWidget *thecolorsel);
static void gtk_color_selection_draw_wheel_marker (GtkColorSelection *colorsel);
static void gtk_color_selection_draw_wheel_frame (GtkColorSelection *colorsel);
static void gtk_color_selection_draw_value_marker (GtkColorSelection *colorsel);
static void gtk_color_selection_draw_value_bar (GtkColorSelection *colorsel,
gint resize);
static void gtk_color_selection_draw_wheel (GtkColorSelection *colorsel,
gint resize);
static void gtk_color_selection_draw_sample (GtkColorSelection *colorsel,
gint resize);
static gint gtk_color_selection_eval_wheel (gint x, gint y,
gdouble cx, gdouble cy,
gdouble *h, gdouble *s);
static void gtk_color_selection_hsv_to_rgb (gdouble h, gdouble s, gdouble v,
gdouble *r, gdouble *g, gdouble *b);
static void gtk_color_selection_rgb_to_hsv (gdouble r, gdouble g, gdouble b,
gdouble *h, gdouble *s, gdouble *v);
static GtkVBoxClass *color_selection_parent_class = NULL;
static GtkWindowClass *color_selection_dialog_parent_class = NULL;
static guint color_selection_signals[LAST_SIGNAL] = {0};
static const gchar *value_index_key = "gtk-value-index";
#define SF GtkSignalFunc
scale_val_type scale_vals[NUM_CHANNELS] =
{
{"Hue:", 0.0, 360.0, 1.00, 10.00, (SF) gtk_color_selection_hsv_updater},
{"Saturation:", 0.0, 1.0, 0.01, 0.01, (SF) gtk_color_selection_hsv_updater},
{"Value:", 0.0, 1.0, 0.01, 0.01, (SF) gtk_color_selection_hsv_updater},
{"Red:", 0.0, 1.0, 0.01, 0.01, (SF) gtk_color_selection_rgb_updater},
{"Green:", 0.0, 1.0, 0.01, 0.01, (SF) gtk_color_selection_rgb_updater},
{"Blue:", 0.0, 1.0, 0.01, 0.01, (SF) gtk_color_selection_rgb_updater},
{"Opacity:", 0.0, 1.0, 0.01, 0.01, (SF) gtk_color_selection_opacity_updater}
};
guint
gtk_color_selection_get_type (void)
{
static guint color_selection_type = 0;
if (!color_selection_type)
{
GtkTypeInfo colorsel_info =
{
"GtkColorSelection",
sizeof (GtkColorSelection),
sizeof (GtkColorSelectionClass),
(GtkClassInitFunc) gtk_color_selection_class_init,
(GtkObjectInitFunc) gtk_color_selection_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL,
};
color_selection_type = gtk_type_unique (gtk_vbox_get_type (), &colorsel_info);
}
return color_selection_type;
}
static void
gtk_color_selection_class_init (GtkColorSelectionClass *klass)
{
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
GtkContainerClass *container_class;
object_class = (GtkObjectClass*) klass;
widget_class = (GtkWidgetClass*) klass;
container_class = (GtkContainerClass*) klass;
color_selection_parent_class = gtk_type_class (gtk_vbox_get_type ());
color_selection_signals[COLOR_CHANGED] =
gtk_signal_new ("color_changed",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkColorSelectionClass, color_changed),
gtk_signal_default_marshaller, GTK_TYPE_NONE, 0);
gtk_object_class_add_signals (object_class, color_selection_signals, LAST_SIGNAL);
object_class->finalize = gtk_color_selection_finalize;
widget_class->realize = gtk_color_selection_realize;
widget_class->unrealize = gtk_color_selection_unrealize;
}
static void
gtk_color_selection_init (GtkColorSelection *colorsel)
{
GtkWidget *frame, *hbox, *vbox, *hbox2, *label, *table;
GtkObject *adj;
gint old_mask, n;
gchar txt[32];
for (n = RED; n <= OPACITY; n++)
colorsel->values[n] = 1.0;
RGB_TO_HSV ();
for (n = HUE; n <= OPACITY; n++)
colorsel->old_values[n] = colorsel->values[n];
colorsel->wheel_gc = NULL;
colorsel->value_gc = NULL;
colorsel->sample_gc = NULL;
colorsel->wheel_buf = NULL;
colorsel->value_buf = NULL;
colorsel->sample_buf = NULL;
colorsel->use_opacity = FALSE;
colorsel->timer_active = FALSE;
colorsel->policy = GTK_UPDATE_CONTINUOUS;
hbox = gtk_hbox_new (FALSE, 5);
gtk_container_border_width (GTK_CONTAINER (hbox), 5);
gtk_container_add (GTK_CONTAINER (colorsel), hbox);
vbox = gtk_vbox_new (FALSE, 5);
gtk_container_add (GTK_CONTAINER (hbox), vbox);
gtk_widget_show (vbox);
hbox2 = gtk_hbox_new (FALSE, 5);
gtk_container_add (GTK_CONTAINER (vbox), hbox2);
gtk_widget_show (hbox2);
colorsel->wheel_area = gtk_preview_new (GTK_PREVIEW_COLOR);
old_mask = gtk_widget_get_events(colorsel->wheel_area);
gtk_widget_set_events (colorsel->wheel_area,
old_mask |
GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK |
GDK_BUTTON_MOTION_MASK |
GDK_POINTER_MOTION_HINT_MASK);
gtk_preview_size (GTK_PREVIEW (colorsel->wheel_area), WHEEL_WIDTH, WHEEL_HEIGHT);
gtk_preview_set_expand (GTK_PREVIEW (colorsel->wheel_area), TRUE);
gtk_container_add (GTK_CONTAINER (hbox2), colorsel->wheel_area);
gtk_widget_show (colorsel->wheel_area);
old_mask = gtk_widget_get_events (colorsel->wheel_area);
gtk_signal_connect (GTK_OBJECT (colorsel->wheel_area), "event",
(SF) gtk_color_selection_wheel_events, (gpointer) colorsel->wheel_area);
gtk_signal_connect_after (GTK_OBJECT (colorsel->wheel_area), "expose_event",
(SF) gtk_color_selection_wheel_events, (gpointer) colorsel->wheel_area);
gtk_signal_connect_after (GTK_OBJECT (colorsel->wheel_area), "size_allocate",
(SF) gtk_color_selection_wheel_resize, (gpointer) colorsel->wheel_area);
gtk_object_set_data (GTK_OBJECT (colorsel->wheel_area), "_GtkColorSelection", (gpointer) colorsel);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_container_border_width (GTK_CONTAINER (frame), 0);
gtk_box_pack_start (GTK_BOX (hbox2), frame, FALSE, TRUE, 0);
gtk_widget_show (frame);
colorsel->value_area = gtk_preview_new (GTK_PREVIEW_COLOR);
gtk_preview_size (GTK_PREVIEW (colorsel->value_area), VALUE_WIDTH, VALUE_HEIGHT);
gtk_preview_set_expand (GTK_PREVIEW (colorsel->value_area), TRUE);
gtk_container_add (GTK_CONTAINER (frame), colorsel->value_area);
gtk_widget_show (colorsel->value_area);
old_mask = gtk_widget_get_events (colorsel->value_area);
gtk_widget_set_events (colorsel->value_area,
old_mask |
GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK |
GDK_BUTTON_MOTION_MASK |
GDK_POINTER_MOTION_HINT_MASK);
gtk_signal_connect_after (GTK_OBJECT (colorsel->value_area), "expose_event",
(SF) gtk_color_selection_value_events, (gpointer) colorsel->value_area);
gtk_signal_connect_after (GTK_OBJECT (colorsel->value_area), "size_allocate",
(SF) gtk_color_selection_value_resize, (gpointer) colorsel->value_area);
gtk_signal_connect (GTK_OBJECT (colorsel->value_area), "event",
(SF) gtk_color_selection_value_events, (gpointer) colorsel->value_area);
gtk_object_set_data (GTK_OBJECT (colorsel->value_area), "_GtkColorSelection", (gpointer) colorsel);
/* New/old color samples */
/* ===================== */
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, TRUE, 0);
gtk_widget_show (frame);
/* colorsel->sample_area_eb = gtk_button_new ();
gtk_container_add (GTK_CONTAINER (frame), colorsel->sample_area_eb);
gtk_widget_show (colorsel->sample_area_eb); */
colorsel->sample_area = gtk_preview_new (GTK_PREVIEW_COLOR);
gtk_preview_size (GTK_PREVIEW (colorsel->sample_area), SAMPLE_WIDTH, SAMPLE_HEIGHT);
gtk_preview_set_expand (GTK_PREVIEW (colorsel->sample_area), TRUE);
gtk_container_add (GTK_CONTAINER (frame),
colorsel->sample_area);
gtk_widget_set_events(colorsel->sample_area,
gtk_widget_get_events(colorsel->sample_area)
| GDK_BUTTON_MOTION_MASK
| GDK_BUTTON_PRESS_MASK
| GDK_BUTTON_RELEASE_MASK
| GDK_ENTER_NOTIFY_MASK
| GDK_LEAVE_NOTIFY_MASK);
gtk_widget_show (colorsel->sample_area);
gtk_signal_connect_after (GTK_OBJECT (colorsel->sample_area),
"size_allocate",
GTK_SIGNAL_FUNC (gtk_color_selection_sample_resize),
colorsel->sample_area);
gtk_object_set_data (GTK_OBJECT (colorsel->sample_area), "_GtkColorSelection", (gpointer) colorsel);
table = gtk_table_new (NUM_CHANNELS, 3, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (table), 3);
gtk_box_pack_start (GTK_BOX (hbox), table, FALSE, TRUE, 0);
for (n = HUE; n <= OPACITY; n++)
{
label = gtk_label_new (scale_vals[n].label);
gtk_misc_set_alignment (GTK_MISC (label), 1.0, 0.5);
gtk_table_attach_defaults (GTK_TABLE (table), label, 0, 1, n, n + 1);
adj = gtk_adjustment_new (colorsel->values[n], scale_vals[n].lower,
scale_vals[n].upper, scale_vals[n].step_inc,
scale_vals[n].page_inc, 0.0);
colorsel->scales[n] = gtk_hscale_new (GTK_ADJUSTMENT (adj));
gtk_widget_set_usize (colorsel->scales[n], 128, 0);
gtk_scale_set_value_pos (GTK_SCALE (colorsel->scales[n]), GTK_POS_TOP);
gtk_range_set_update_policy (GTK_RANGE (colorsel->scales[n]), colorsel->policy);
gtk_scale_set_draw_value (GTK_SCALE (colorsel->scales[n]), FALSE);
gtk_scale_set_digits (GTK_SCALE (colorsel->scales[n]), 2);
gtk_table_attach_defaults (GTK_TABLE (table), colorsel->scales[n], 1, 2, n, n + 1);
colorsel->entries[n] = gtk_entry_new ();
gtk_widget_set_usize (colorsel->entries[n], 40, 0);
sprintf (txt, "%.2f", colorsel->values[n]);
gtk_entry_set_text (GTK_ENTRY (colorsel->entries[n]), txt);
gtk_table_attach_defaults (GTK_TABLE (table), colorsel->entries[n], 2, 3, n, n + 1);
if (n != OPACITY)
{
gtk_widget_show (label);
gtk_widget_show (colorsel->scales[n]);
gtk_widget_show (colorsel->entries[n]);
}
gtk_signal_connect_object (GTK_OBJECT (adj), "value_changed",
scale_vals[n].updater, (gpointer) colorsel->scales[n]);
gtk_object_set_data (GTK_OBJECT (colorsel->scales[n]), "_GtkColorSelection", (gpointer) colorsel);
gtk_object_set_data (GTK_OBJECT (colorsel->scales[n]), value_index_key, GINT_TO_POINTER (n));
gtk_signal_connect_object (GTK_OBJECT (colorsel->entries[n]), "changed",
scale_vals[n].updater, (gpointer) colorsel->entries[n]);
gtk_object_set_data (GTK_OBJECT (colorsel->entries[n]), "_GtkColorSelection", (gpointer) colorsel);
gtk_object_set_data (GTK_OBJECT (colorsel->entries[n]), value_index_key, GINT_TO_POINTER (n));
}
colorsel->opacity_label = label;
gtk_widget_show (table);
gtk_widget_show (hbox);
}
GtkWidget *
gtk_color_selection_new (void)
{
GtkColorSelection *colorsel;
colorsel = gtk_type_new (gtk_color_selection_get_type ());
return GTK_WIDGET (colorsel);
}
void
gtk_color_selection_set_update_policy (GtkColorSelection *colorsel,
GtkUpdateType policy)
{
gint n;
g_return_if_fail (colorsel != NULL);
if (policy != colorsel->policy)
{
colorsel->policy = policy;
for (n = 0; n < NUM_CHANNELS; n++)
gtk_range_set_update_policy (GTK_RANGE (colorsel->scales[n]), policy);
}
}
void
gtk_color_selection_set_color (GtkColorSelection *colorsel,
gdouble *color)
{
gint n, i = 0;
g_return_if_fail (colorsel != NULL);
g_return_if_fail (GTK_IS_COLOR_SELECTION (colorsel));
if (GTK_WIDGET_DRAWABLE (GTK_WIDGET (colorsel)))
gtk_color_selection_draw_wheel_marker (colorsel);
for (n = RED; n <= BLUE; n++)
{
colorsel->old_values[n] = colorsel->values[n];
colorsel->values[n] = color[i++];
}
if (colorsel->use_opacity == TRUE)
{
colorsel->old_values[OPACITY] = colorsel->values[OPACITY];
colorsel->values[OPACITY] = color[i];
}
RGB_TO_HSV ();
gtk_color_selection_update_inputs (colorsel, RGB_INPUTS | HSV_INPUTS | OPACITY_INPUTS, BOTH);
if (GTK_WIDGET_DRAWABLE (GTK_WIDGET (colorsel)))
{
gtk_color_selection_draw_value_bar (colorsel, FALSE);
gtk_color_selection_draw_sample (colorsel, FALSE);
gtk_color_selection_draw_wheel_marker (colorsel);
}
}
void
gtk_color_selection_get_color (GtkColorSelection *colorsel,
gdouble *color)
{
gint n, i = 0;
g_return_if_fail (colorsel != NULL);
g_return_if_fail (GTK_IS_COLOR_SELECTION (colorsel));
for (n = RED; n <= BLUE; n++)
color[i++] = colorsel->values[n];
if (colorsel->use_opacity == TRUE)
color[i] = colorsel->values[OPACITY];
}
static void
gtk_color_selection_realize (GtkWidget *widget)
{
GtkColorSelection *colorsel;
gchar *type_accept_list[] = {"application/x-color"};
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_COLOR_SELECTION (widget));
colorsel = GTK_COLOR_SELECTION (widget);
if (GTK_WIDGET_CLASS (color_selection_parent_class)->realize)
(*GTK_WIDGET_CLASS (color_selection_parent_class)->realize) (widget);
gtk_widget_dnd_drag_set (colorsel->sample_area,
1, type_accept_list, 1);
gtk_widget_dnd_drop_set (colorsel->sample_area,
1, type_accept_list, 1, 0);
gtk_signal_connect_after (GTK_OBJECT (colorsel->sample_area),
"drop_data_available_event",
GTK_SIGNAL_FUNC (gtk_color_selection_drop_handle),
colorsel);
gtk_signal_connect_after (GTK_OBJECT (colorsel->sample_area),
"drag_request_event",
GTK_SIGNAL_FUNC (gtk_color_selection_drag_handle),
colorsel);
}
static void
gtk_color_selection_unrealize (GtkWidget *widget)
{
GtkColorSelection *colorsel;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_COLOR_SELECTION (widget));
colorsel = GTK_COLOR_SELECTION (widget);
if (colorsel->value_gc != NULL)
{
gdk_gc_unref (colorsel->value_gc);
colorsel->value_gc = NULL;
}
if (colorsel->wheel_gc != NULL)
{
gdk_gc_unref (colorsel->wheel_gc);
colorsel->wheel_gc = NULL;
}
if (colorsel->sample_gc != NULL)
{
gdk_gc_unref (colorsel->sample_gc);
colorsel->sample_gc = NULL;
}
(* GTK_WIDGET_CLASS (color_selection_parent_class)->unrealize) (widget);
}
static void
gtk_color_selection_finalize (GtkObject *object)
{
GtkColorSelection *colorsel;
g_return_if_fail (object != NULL);
g_return_if_fail (GTK_IS_COLOR_SELECTION (object));
colorsel = GTK_COLOR_SELECTION (object);
if (colorsel->wheel_buf != NULL)
g_free (colorsel->wheel_buf);
if (colorsel->value_buf != NULL)
g_free (colorsel->value_buf);
if (colorsel->sample_buf != NULL)
g_free (colorsel->sample_buf);
(*GTK_OBJECT_CLASS (color_selection_parent_class)->finalize) (object);
}
static void
gtk_color_selection_color_changed (GtkColorSelection *colorsel)
{
gtk_signal_emit (GTK_OBJECT (colorsel), color_selection_signals[COLOR_CHANGED]);
}
static void
gtk_color_selection_update_input (GtkWidget *scale,
GtkWidget *entry,
gdouble value)
{
GtkAdjustment *adj;
gchar txt[32];
if (scale != NULL)
{
adj = gtk_range_get_adjustment (GTK_RANGE (scale));
adj->value = (gfloat) value;
gtk_signal_handler_block_by_data (GTK_OBJECT (adj), (gpointer) scale);
gtk_signal_emit_by_name (GTK_OBJECT (adj), "value_changed");
gtk_range_slider_update (GTK_RANGE (scale));
gtk_signal_handler_unblock_by_data (GTK_OBJECT (adj), (gpointer) scale);
}
if (entry != NULL)
{
gtk_signal_handler_block_by_data (GTK_OBJECT (entry), (gpointer) entry);
sprintf (txt, "%.2f", value);
gtk_entry_set_text (GTK_ENTRY (entry), txt);
gtk_signal_handler_unblock_by_data (GTK_OBJECT (entry), (gpointer) entry);
}
}
static void
gtk_color_selection_update_inputs (GtkColorSelection *colorsel,
gint inputs,
gint which)
{
gint n;
switch (which)
{
case SCALE:
if ((inputs & RGB_INPUTS) != 0)
for (n = RED; n <= BLUE; n++)
gtk_color_selection_update_input (colorsel->scales[n], NULL,
colorsel->values[n]);
if ((inputs & HSV_INPUTS) != 0)
for (n = HUE; n <= VALUE; n++)
gtk_color_selection_update_input (colorsel->scales[n], NULL,
colorsel->values[n]);
if ((inputs & OPACITY_INPUTS) != 0)
gtk_color_selection_update_input(colorsel->scales[OPACITY], NULL,
colorsel->values[OPACITY]);
break;
case ENTRY:
if ((inputs & RGB_INPUTS) != 0)
for (n = RED; n <= BLUE; n++)
gtk_color_selection_update_input (NULL, colorsel->entries[n], colorsel->values[n]);
if ((inputs & HSV_INPUTS) != 0)
for (n = HUE; n <= VALUE; n++)
gtk_color_selection_update_input (NULL, colorsel->entries[n], colorsel->values[n]);
if ((inputs & OPACITY_INPUTS) != 0)
gtk_color_selection_update_input(NULL, colorsel->entries[OPACITY], colorsel->values[OPACITY]);
break;
default:
if ((inputs & RGB_INPUTS) != 0)
for (n = RED; n <= BLUE; n++)
gtk_color_selection_update_input (colorsel->scales[n], colorsel->entries[n],
colorsel->values[n]);
if ((inputs & HSV_INPUTS) != 0)
for (n = HUE; n <= VALUE; n++)
gtk_color_selection_update_input (colorsel->scales[n], colorsel->entries[n],
colorsel->values[n]);
if ((inputs & OPACITY_INPUTS) != 0)
gtk_color_selection_update_input(colorsel->scales[OPACITY], colorsel->entries[OPACITY],
colorsel->values[OPACITY]);
break;
}
}
static void
gtk_color_selection_hsv_updater (GtkWidget *widget,
gpointer data)
{
GtkColorSelection *colorsel;
GtkAdjustment *adj;
gdouble newvalue;
gint i, which = SCALE;
if (GTK_WIDGET_DRAWABLE (GTK_WIDGET (widget)))
{
colorsel = (GtkColorSelection*) gtk_object_get_data (GTK_OBJECT (widget), "_GtkColorSelection");
i = GPOINTER_TO_INT (gtk_object_get_data (GTK_OBJECT (widget), value_index_key));
if (GTK_IS_SCALE (widget))
{
adj = gtk_range_get_adjustment (GTK_RANGE (GTK_SCALE (widget)));
newvalue = (gdouble) adj->value;
which = ENTRY;
}
else
newvalue = (gdouble) atof (gtk_entry_get_text (GTK_ENTRY (widget)));
if (i == VALUE)
{
gtk_color_selection_draw_value_marker (colorsel);
colorsel->values[i] = newvalue;
HSV_TO_RGB ();
gtk_color_selection_draw_value_marker (colorsel);
}
else
{
gtk_color_selection_draw_wheel_marker (colorsel);
colorsel->values[i] = newvalue;
HSV_TO_RGB ();
gtk_color_selection_draw_wheel_marker (colorsel);
gtk_color_selection_draw_value_bar (colorsel, FALSE);
}
gtk_color_selection_draw_sample (colorsel, FALSE);
gtk_color_selection_color_changed (colorsel);
gtk_color_selection_update_inputs (colorsel, HSV_INPUTS, which);
gtk_color_selection_update_inputs (colorsel, RGB_INPUTS, BOTH);
}
}
static void
gtk_color_selection_rgb_updater (GtkWidget *widget,
gpointer data)
{
GtkColorSelection *colorsel;
GtkAdjustment *adj;
gdouble newvalue;
gint i, which = SCALE;
if (GTK_WIDGET_DRAWABLE (GTK_WIDGET (widget)))
{
colorsel = (GtkColorSelection*) gtk_object_get_data (GTK_OBJECT (widget), "_GtkColorSelection");
i = GPOINTER_TO_INT (gtk_object_get_data (GTK_OBJECT (widget), value_index_key));
if (GTK_IS_SCALE (widget))
{
adj = gtk_range_get_adjustment (GTK_RANGE (GTK_SCALE (widget)));
newvalue = (gdouble) adj->value;
which = ENTRY;
}
else
newvalue = (gdouble) atof (gtk_entry_get_text (GTK_ENTRY (widget)));
gtk_color_selection_draw_wheel_marker (colorsel);
colorsel->values[i] = newvalue;
RGB_TO_HSV ();
gtk_color_selection_draw_wheel_marker (colorsel);
gtk_color_selection_draw_value_bar (colorsel, FALSE);
gtk_color_selection_draw_sample (colorsel, FALSE);
gtk_color_selection_color_changed (colorsel);
gtk_color_selection_update_inputs (colorsel, RGB_INPUTS, which);
gtk_color_selection_update_inputs (colorsel, HSV_INPUTS, BOTH);
}
}
static void
gtk_color_selection_opacity_updater (GtkWidget *widget,
gpointer data)
{
GtkColorSelection *colorsel;
GtkAdjustment *adj;
colorsel = (GtkColorSelection*) gtk_object_get_data (GTK_OBJECT (widget), "_GtkColorSelection");
if (GTK_IS_SCALE (widget))
{
adj = gtk_range_get_adjustment (GTK_RANGE (widget));
colorsel->values[OPACITY] = (gdouble) adj->value;
gtk_color_selection_update_input (NULL, colorsel->entries[OPACITY], colorsel->values[OPACITY]);
}
else
{
colorsel->values[OPACITY] = (gdouble) atof (gtk_entry_get_text (GTK_ENTRY (widget)));
gtk_color_selection_update_input (colorsel->scales[OPACITY], NULL, colorsel->values[OPACITY]);
}
gtk_color_selection_draw_sample (colorsel, FALSE);
gtk_color_selection_color_changed (colorsel);
}
void
gtk_color_selection_set_opacity (GtkColorSelection *colorsel,
gint use_opacity)
{
g_return_if_fail (colorsel != NULL);
colorsel->use_opacity = use_opacity;
if (use_opacity == FALSE && GTK_WIDGET_VISIBLE (colorsel->scales[OPACITY]))
{
gtk_widget_hide (colorsel->opacity_label);
gtk_widget_hide (colorsel->scales[OPACITY]);
gtk_widget_hide (colorsel->entries[OPACITY]);
}
else if (use_opacity == TRUE && !GTK_WIDGET_VISIBLE (colorsel->scales[OPACITY]))
{
gtk_widget_show (colorsel->opacity_label);
gtk_widget_show (colorsel->scales[OPACITY]);
gtk_widget_show (colorsel->entries[OPACITY]);
}
if (GTK_WIDGET_DRAWABLE (colorsel->sample_area))
gtk_color_selection_draw_sample (colorsel, FALSE);
}
static void
gtk_color_selection_value_resize (GtkWidget *widget,
gpointer data)
{
GtkColorSelection *colorsel;
colorsel = (GtkColorSelection*) gtk_object_get_data (GTK_OBJECT (widget), "_GtkColorSelection");
gtk_color_selection_draw_value_bar (colorsel, TRUE);
}
static void
gtk_color_selection_wheel_resize (GtkWidget *widget,
gpointer data)
{
GtkColorSelection *colorsel;
colorsel = (GtkColorSelection*) gtk_object_get_data (GTK_OBJECT (widget), "_GtkColorSelection");
gtk_color_selection_draw_wheel (colorsel, TRUE);
}
static void
gtk_color_selection_sample_resize (GtkWidget *widget,
gpointer data)
{
GtkColorSelection *colorsel;
colorsel = (GtkColorSelection*) gtk_object_get_data (GTK_OBJECT (widget), "_GtkColorSelection");
gtk_color_selection_draw_sample (colorsel, TRUE);
}
static void
gtk_color_selection_drop_handle (GtkWidget *widget, GdkEvent *event,
GtkWidget *thecolorsel)
{
/* This is currently a gdouble array of the format (I think):
use_opacity
R
G
B
opacity
*/
gdouble *v = event->dropdataavailable.data;
gtk_color_selection_set_opacity(GTK_COLOR_SELECTION(thecolorsel),
(v[0]==1.0)?TRUE:FALSE);
gtk_color_selection_set_color(GTK_COLOR_SELECTION(thecolorsel),
v + 1);
g_free(event->dropdataavailable.data);
g_free(event->dropdataavailable.data_type);
}
static void
gtk_color_selection_drag_handle (GtkWidget *widget, GdkEvent *event,
GtkWidget *thecolorsel)
{
gdouble sendvals[(BLUE - RED + 1) + 3];
sendvals[0] = (GTK_COLOR_SELECTION(thecolorsel)->use_opacity)?1.0:0.0;
gtk_color_selection_get_color(GTK_COLOR_SELECTION(thecolorsel),
sendvals + 1);
gtk_widget_dnd_data_set(widget,
event,
(gpointer)sendvals,
sizeof(sendvals));
}
static void
gtk_color_selection_draw_wheel_marker (GtkColorSelection *colorsel)
{
gint xpos, ypos;
gdk_gc_set_function (colorsel->wheel_gc, GDK_INVERT);
xpos = (gint) ((-(gdouble) (colorsel->wheel_area->allocation.width) / 2.0) *
colorsel->values[SATURATION] * cos (DEGTORAD ((colorsel->values[HUE] - 90)))) +
(colorsel->wheel_area->allocation.width >> 1) - 4;
ypos = (gint) (((gdouble) (colorsel->wheel_area->allocation.height) / 2.0) *
colorsel->values[SATURATION] * sin (DEGTORAD ((colorsel->values[HUE] - 90)))) +
(colorsel->wheel_area->allocation.height >> 1) - 4;
gdk_draw_arc (colorsel->wheel_area->window, colorsel->wheel_gc, FALSE, xpos, ypos, 8, 8, 0, 360 * 64);
}
static void
gtk_color_selection_draw_value_marker (GtkColorSelection *colorsel)
{
gint y;
gdk_gc_set_function (colorsel->value_gc, GDK_INVERT);
y = (gint) ((gdouble) (colorsel->value_area->allocation.height) * (1.0 - colorsel->values[VALUE]));
gdk_draw_line (colorsel->value_area->window, colorsel->value_gc,
0, y, colorsel->value_area->allocation.width, y);
}
static void
gtk_color_selection_update_value (GtkColorSelection *colorsel,
gint y)
{
gtk_color_selection_draw_value_marker (colorsel);
if (y < 0)
y = 0;
else if (y > colorsel->value_area->allocation.height - 1)
y = colorsel->value_area->allocation.height - 1;
colorsel->values[VALUE] = 1.0 - (gdouble) y / (gdouble) (colorsel->value_area->allocation.height);
HSV_TO_RGB ();
gtk_color_selection_draw_value_marker (colorsel);
gtk_color_selection_draw_sample (colorsel, FALSE);
gtk_color_selection_update_input (colorsel->scales[VALUE], colorsel->entries[VALUE],
colorsel->values[VALUE]);
gtk_color_selection_update_inputs (colorsel, RGB_INPUTS, BOTH);
}
static void
gtk_color_selection_update_wheel (GtkColorSelection *colorsel,
gint x,
gint y)
{
gdouble wid, heig;
gint res;
gtk_color_selection_draw_wheel_marker (colorsel);
wid = (gdouble) (colorsel->wheel_area->allocation.width) / 2.0;
heig = (gdouble) (colorsel->wheel_area->allocation.height) / 2.0;
res = gtk_color_selection_eval_wheel (x, y, wid, heig, &colorsel->values[HUE],
&colorsel->values[SATURATION]);
HSV_TO_RGB ();
gtk_color_selection_draw_wheel_marker (colorsel);
gtk_color_selection_draw_value_bar (colorsel, FALSE);
gtk_color_selection_draw_sample (colorsel, FALSE);
gtk_color_selection_update_inputs (colorsel, RGB_INPUTS | HSV_INPUTS, BOTH);
}
static gint
gtk_color_selection_value_timeout (GtkColorSelection *colorsel)
{
gint x, y;
gdk_window_get_pointer (colorsel->value_area->window, &x, &y, NULL);
gtk_color_selection_update_value (colorsel, y);
gtk_color_selection_color_changed (colorsel);
return (TRUE);
}
static gint
gtk_color_selection_value_events (GtkWidget *area,
GdkEvent *event)
{
GtkColorSelection *colorsel;
gint y;
colorsel = (GtkColorSelection*) gtk_object_get_data (GTK_OBJECT (area), "_GtkColorSelection");
switch (event->type)
{
case GDK_MAP:
gtk_color_selection_draw_value_marker (colorsel);
break;
case GDK_EXPOSE:
if (colorsel->value_gc == NULL)
colorsel->value_gc = gdk_gc_new (colorsel->value_area->window);
gtk_color_selection_draw_value_marker (colorsel);
break;
case GDK_BUTTON_PRESS:
gtk_grab_add (area);
gtk_color_selection_update_value (colorsel, event->button.y);
gtk_color_selection_color_changed (colorsel);
break;
case GDK_BUTTON_RELEASE:
gtk_grab_remove (area);
if (colorsel->timer_active == TRUE)
gtk_timeout_remove (colorsel->timer_tag);
colorsel->timer_active = FALSE;
y = event->button.y;
if (event->button.window != area->window)
gdk_window_get_pointer (area->window, NULL, &y, NULL);
gtk_color_selection_update_value (colorsel, y);
gtk_color_selection_color_changed (colorsel);
break;
case GDK_MOTION_NOTIFY:
y = event->motion.y;
if (event->motion.is_hint || (event->motion.window != area->window))
gdk_window_get_pointer (area->window, NULL, &y, NULL);
switch (colorsel->policy)
{
case GTK_UPDATE_CONTINUOUS:
gtk_color_selection_update_value (colorsel, y);
gtk_color_selection_color_changed (colorsel);
break;
case GTK_UPDATE_DELAYED:
if (colorsel->timer_active == TRUE)
gtk_timeout_remove (colorsel->timer_tag);
colorsel->timer_tag = gtk_timeout_add (TIMER_DELAY,
(GtkFunction) gtk_color_selection_value_timeout,
(gpointer) colorsel);
colorsel->timer_active = TRUE;
break;
default:
break;
}
break;
default:
break;
}
return (FALSE);
}
static gint
gtk_color_selection_wheel_timeout (GtkColorSelection *colorsel)
{
gint x, y;
gdk_window_get_pointer (colorsel->wheel_area->window, &x, &y, NULL);
gtk_color_selection_update_wheel (colorsel, x, y);
gtk_color_selection_color_changed (colorsel);
return (TRUE);
}
static gint
gtk_color_selection_wheel_events (GtkWidget *area,
GdkEvent *event)
{
GtkColorSelection *colorsel;
gint x, y;
colorsel = (GtkColorSelection*) gtk_object_get_data (GTK_OBJECT (area), "_GtkColorSelection");
switch (event->type)
{
case GDK_MAP:
gtk_color_selection_draw_wheel (colorsel, TRUE);
gtk_color_selection_draw_wheel_marker (colorsel);
gtk_color_selection_draw_sample (colorsel, TRUE);
break;
case GDK_EXPOSE:
if (colorsel->wheel_gc == NULL)
colorsel->wheel_gc = gdk_gc_new (colorsel->wheel_area->window);
if (colorsel->sample_gc == NULL)
colorsel->sample_gc = gdk_gc_new (colorsel->sample_area->window);
if (colorsel->value_gc == NULL)
colorsel->value_gc = gdk_gc_new (colorsel->value_area->window);
gtk_color_selection_draw_wheel_marker (colorsel);
gtk_color_selection_draw_wheel_frame (colorsel);
break;
case GDK_BUTTON_PRESS:
gtk_grab_add (area);
gtk_color_selection_update_wheel (colorsel, event->button.x, event->button.y);
gtk_color_selection_color_changed (colorsel);
break;
case GDK_BUTTON_RELEASE:
gtk_grab_remove (area);
if (colorsel->timer_active == TRUE)
gtk_timeout_remove (colorsel->timer_tag);
colorsel->timer_active = FALSE;
x = event->button.x;
y = event->button.y;
if (event->button.window != area->window)
gdk_window_get_pointer (area->window, &x, &y, NULL);
gtk_color_selection_update_wheel (colorsel, x, y);
gtk_color_selection_color_changed (colorsel);
break;
case GDK_MOTION_NOTIFY:
x = event->motion.x;
y = event->motion.y;
if (event->motion.is_hint || (event->motion.window != area->window))
gdk_window_get_pointer (area->window, &x, &y, NULL);
switch (colorsel->policy)
{
case GTK_UPDATE_CONTINUOUS:
gtk_color_selection_update_wheel (colorsel, x, y);
gtk_color_selection_color_changed (colorsel);
break;
case GTK_UPDATE_DELAYED:
if (colorsel->timer_active == TRUE)
gtk_timeout_remove (colorsel->timer_tag);
colorsel->timer_tag = gtk_timeout_add (TIMER_DELAY,
(GtkFunction) gtk_color_selection_wheel_timeout,
(gpointer) colorsel);
colorsel->timer_active = TRUE;
break;
default:
break;
}
break;
default:
break;
}
return (FALSE);
}
static void
gtk_color_selection_draw_value_bar (GtkColorSelection *colorsel,
gint resize)
{
gint x, y, i, wid, heig, n;
gdouble sv, v, c[3];
guchar rc[3];
wid = colorsel->value_area->allocation.width;
heig = colorsel->value_area->allocation.height;
if (resize)
{
if (colorsel->value_buf != NULL)
g_free (colorsel->value_buf);
colorsel->value_buf = g_new(guchar, 3 * wid);
}
v = 1.0;
sv = 1.0 / (gdouble) (heig - 1);
for (y = 0; y < heig; y++)
{
i = 0;
gtk_color_selection_hsv_to_rgb (colorsel->values[HUE],colorsel->values[SATURATION],v,
&c[0], &c[1], &c[2]);
for (n = 0; n < 3; n++)
rc[n] = (guchar) (255.0 * c[n]);
for (x = 0; x < wid; x++)
{
for (n = 0; n < 3; n++)
colorsel->value_buf[i++] = rc[n];
}
gtk_preview_draw_row (GTK_PREVIEW (colorsel->value_area), colorsel->value_buf, 0, y, wid);
v -= sv;
}
gtk_widget_draw (colorsel->value_area, NULL);
}
static void
gtk_color_selection_draw_wheel_frame (GtkColorSelection *colorsel)
{
GtkStyle *style;
gint w, h;
style = gtk_widget_get_style (colorsel->wheel_area);
w = colorsel->wheel_area->allocation.width;
h = colorsel->wheel_area->allocation.height;
gdk_draw_arc (colorsel->wheel_area->window, style->black_gc,
FALSE, 1, 1, w - 1, h - 1, 30 * 64, 180 * 64);
gdk_draw_arc (colorsel->wheel_area->window, style->mid_gc[GTK_STATE_NORMAL],
FALSE, 0, 0, w, h, 30 * 64, 180 * 64);
gdk_draw_arc (colorsel->wheel_area->window, style->bg_gc[GTK_STATE_NORMAL],
FALSE, 1, 1, w - 1, h - 1, 210 * 64, 180 * 64);
gdk_draw_arc (colorsel->wheel_area->window, style->light_gc[GTK_STATE_NORMAL],
FALSE, 0, 0, w, h, 210 * 64, 180 * 64);
}
static void
gtk_color_selection_draw_wheel (GtkColorSelection *colorsel,
gint resize)
{
gint x, y, i, wid, heig, n;
gdouble cx, cy, h, s, c[3];
guchar bg[3];
GtkStyle *style = gtk_widget_get_style (colorsel->wheel_area);
wid = colorsel->wheel_area->allocation.width;
heig = colorsel->wheel_area->allocation.height;
if (resize)
{
if (colorsel->wheel_buf != NULL)
g_free (colorsel->wheel_buf);
colorsel->wheel_buf = g_new(guchar, 3 * wid);
}
cx = (gdouble) (wid) / 2.0;
cy = (gdouble) (heig) / 2.0;
bg[0] = style->bg[GTK_STATE_NORMAL].red >> 8;
bg[1] = style->bg[GTK_STATE_NORMAL].green >> 8;
bg[2] = style->bg[GTK_STATE_NORMAL].blue >> 8;
for (y = 0; y < heig; y++)
{
i = 0;
for (x = 0; x < wid; x++)
{
if (gtk_color_selection_eval_wheel (x, y, cx, cy, &h, &s) == TRUE)
{
for (n = 0; n < 3; n++)
colorsel->wheel_buf[i++] = bg[n];
}
else
{
gtk_color_selection_hsv_to_rgb (h, s, 1.0, &c[0], &c[1], &c[2]);
for (n = 0; n < 3; n++)
colorsel->wheel_buf[i++] = (guchar) (255.0 * c[n]);
}
}
gtk_preview_draw_row (GTK_PREVIEW (colorsel->wheel_area), colorsel->wheel_buf, 0, y, wid);
}
gtk_widget_draw (colorsel->wheel_area, NULL);
}
static void
gtk_color_selection_draw_sample (GtkColorSelection *colorsel,
gint resize)
{
gint x, y, i, wid, heig, f, half, n;
guchar c[3 * 2], cc[3 * 4], *cp = c;
gdouble o, oldo;
wid = colorsel->sample_area->allocation.width;
heig = colorsel->sample_area->allocation.height;
half = wid >> 1;
if (resize)
{
if (colorsel->sample_buf != NULL)
g_free (colorsel->sample_buf);
colorsel->sample_buf = g_new(guchar, 3 * wid);
}
i = RED;
for (n = 0; n < 3; n++)
{
c[n] = (guchar) (255.0 * colorsel->old_values[i]);
c[n + 3] = (guchar) (255.0 * colorsel->values[i++]);
}
if (colorsel->use_opacity == TRUE)
{
o = colorsel->values[OPACITY];
oldo = colorsel->old_values[OPACITY];
for (n = 0; n < 3; n++)
{
cc[n] = (guchar) ((1.0 - oldo) * 192 + (oldo * (gdouble) c[n]));
cc[n + 3] = (guchar) ((1.0 - oldo) * 128 + (oldo * (gdouble) c[n]));
cc[n + 6] = (guchar) ((1.0 - o) * 192 + (o * (gdouble) c[n + 3]));
cc[n + 9] = (guchar) ((1.0 - o) * 128 + (o * (gdouble) c[n + 3]));
}
cp = cc;
}
for (y = 0; y < heig; y++)
{
i = 0;
for (x = 0; x < wid; x++)
{
if (colorsel->use_opacity)
{
f = 3 * (((x % 32) < 16) ^ ((y % 32) < 16));
f += (x > half) * 6;
}
else
f = (x > half) * 3;
for (n = 0; n < 3; n++)
colorsel->sample_buf[i++] = cp[n + f];
}
gtk_preview_draw_row (GTK_PREVIEW (colorsel->sample_area), colorsel->sample_buf, 0, y, wid);
}
gtk_widget_draw (colorsel->sample_area, NULL);
}
static gint
gtk_color_selection_eval_wheel (gint x, gint y,
gdouble cx, gdouble cy,
gdouble *h, gdouble *s)
{
gdouble d, r, rx, ry, l;
rx = (gdouble) x - cx;
ry = (gdouble) y - cy;
d = (SQR (cy) * SQR (rx) + SQR (cx) * SQR (ry) - SQR (cx) * SQR (cy));
r = sqrt (SQR (rx) + SQR (ry));
if (r != 0.0)
*h = atan2 (rx / r, ry / r);
else
*h = 0.0;
l = sqrt (SQR ((cx * cos (*h + 0.5 * M_PI))) + SQR ((cy * sin (*h + 0.5 * M_PI))));
*s = r / l;
*h = 360.0 * (*h) / (2.0 * M_PI) + 180;
if (*s == 0.0)
*s = 0.00001;
else if (*s > 1.0)
*s = 1.0;
return ((d > 0.0));
}
static void
gtk_color_selection_hsv_to_rgb (gdouble h, gdouble s, gdouble v,
gdouble *r, gdouble *g, gdouble *b)
{
gint i;
gdouble f, w, q, t;
if (s == 0.0)
s = 0.000001;
if (h == -1.0)
{
*r = v;
*g = v;
*b = v;
}
else
{
if (h == 360.0)
h = 0.0;
h = h / 60.0;
i = (gint) h;
f = h - i;
w = v * (1.0 - s);
q = v * (1.0 - (s * f));
t = v * (1.0 - (s * (1.0 - f)));
switch (i)
{
case 0:
*r = v;
*g = t;
*b = w;
break;
case 1:
*r = q;
*g = v;
*b = w;
break;
case 2:
*r = w;
*g = v;
*b = t;
break;
case 3:
*r = w;
*g = q;
*b = v;
break;
case 4:
*r = t;
*g = w;
*b = v;
break;
case 5:
*r = v;
*g = w;
*b = q;
break;
}
}
}
static void
gtk_color_selection_rgb_to_hsv (gdouble r, gdouble g, gdouble b,
gdouble *h, gdouble *s, gdouble *v)
{
double max, min, delta;
max = r;
if (g > max)
max = g;
if (b > max)
max = b;
min = r;
if (g < min)
min = g;
if (b < min)
min = b;
*v = max;
if (max != 0.0)
*s = (max - min) / max;
else
*s = 0.0;
if (*s == 0.0)
*h = -1.0;
else
{
delta = max - min;
if (r == max)
*h = (g - b) / delta;
else if (g == max)
*h = 2.0 + (b - r) / delta;
else if (b == max)
*h = 4.0 + (r - g) / delta;
*h = *h * 60.0;
if (*h < 0.0)
*h = *h + 360;
}
}
/***************************/
/* GtkColorSelectionDialog */
/***************************/
guint
gtk_color_selection_dialog_get_type (void)
{
static guint color_selection_dialog_type = 0;
if (!color_selection_dialog_type)
{
GtkTypeInfo colorsel_diag_info =
{
"GtkColorSelectionDialog",
sizeof (GtkColorSelectionDialog),
sizeof (GtkColorSelectionDialogClass),
(GtkClassInitFunc) gtk_color_selection_dialog_class_init,
(GtkObjectInitFunc) gtk_color_selection_dialog_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL,
};
color_selection_dialog_type = gtk_type_unique (gtk_window_get_type (), &colorsel_diag_info);
}
return color_selection_dialog_type;
}
static void
gtk_color_selection_dialog_class_init (GtkColorSelectionDialogClass *klass)
{
GtkObjectClass *object_class;
object_class = (GtkObjectClass*) klass;
color_selection_dialog_parent_class = gtk_type_class (gtk_window_get_type ());
}
static void
gtk_color_selection_dialog_init (GtkColorSelectionDialog *colorseldiag)
{
GtkWidget *action_area, *frame;
colorseldiag->main_vbox = gtk_vbox_new (FALSE, 10);
gtk_container_border_width (GTK_CONTAINER (colorseldiag), 10);
gtk_container_add (GTK_CONTAINER (colorseldiag), colorseldiag->main_vbox);
gtk_widget_show (colorseldiag->main_vbox);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
gtk_container_add (GTK_CONTAINER (colorseldiag->main_vbox), frame);
gtk_widget_show (frame);
colorseldiag->colorsel = gtk_color_selection_new ();
gtk_container_add (GTK_CONTAINER (frame), colorseldiag->colorsel);
gtk_widget_show (colorseldiag->colorsel);
action_area = gtk_hbutton_box_new ();
gtk_button_box_set_layout(GTK_BUTTON_BOX(action_area), GTK_BUTTONBOX_END);
gtk_button_box_set_spacing(GTK_BUTTON_BOX(action_area), 5);
gtk_box_pack_end (GTK_BOX (colorseldiag->main_vbox), action_area, FALSE, FALSE, 0);
gtk_widget_show (action_area);
colorseldiag->ok_button = gtk_button_new_with_label ("OK");
GTK_WIDGET_SET_FLAGS (colorseldiag->ok_button, GTK_CAN_DEFAULT);
gtk_box_pack_start (GTK_BOX (action_area), colorseldiag->ok_button, TRUE, TRUE, 0);
gtk_widget_grab_default (colorseldiag->ok_button);
gtk_widget_show (colorseldiag->ok_button);
colorseldiag->cancel_button = gtk_button_new_with_label ("Cancel");
GTK_WIDGET_SET_FLAGS (colorseldiag->cancel_button, GTK_CAN_DEFAULT);
gtk_box_pack_start (GTK_BOX (action_area), colorseldiag->cancel_button, TRUE, TRUE, 0);
gtk_widget_show (colorseldiag->cancel_button);
colorseldiag->help_button = gtk_button_new_with_label ("Help");
GTK_WIDGET_SET_FLAGS (colorseldiag->help_button, GTK_CAN_DEFAULT);
gtk_box_pack_start (GTK_BOX (action_area), colorseldiag->help_button, TRUE, TRUE, 0);
gtk_widget_show (colorseldiag->help_button);
}
GtkWidget *
gtk_color_selection_dialog_new (const gchar *title)
{
GtkColorSelectionDialog *colorseldiag;
colorseldiag = gtk_type_new (gtk_color_selection_dialog_get_type ());
gtk_window_set_title (GTK_WINDOW (colorseldiag), title);
return GTK_WIDGET (colorseldiag);
}
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