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gtk2/gtk/gtkcolorsel.c
Owen Taylor 727cdae769 Fix conversion from float to int so that we don't get skew in the int => 
Sun Aug  5 11:24:27 2001  Owen Taylor  <otaylor@redhat.com>

	* gtk/gtkcolorsel.c (gtk_color_selection_set_current_alpha):
	Fix conversion from float to int so that we don't get
	skew in the int => float => int roundtrip.
	(#58120, reported by Vitaly Tishkov). Also fix problem
	where if no alpha was set, the returned alpha
	from (say) set_current_alpha() was returned as 1, not 65535.
2001-08-05 15:27:30 +00:00

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/* GTK - The GIMP Toolkit
* Copyright (C) 2000 Red Hat, Inc.
* 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 Lesser 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
* 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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-2001. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "gdkconfig.h"
#include <math.h>
#if defined (GDK_WINDOWING_X11)
#include "x11/gdkx.h"
#elif defined (GDK_WINDOWING_WIN32)
#include "win32/gdkwin32.h"
#elif defined (GDK_WINDOWING_FB)
#include "linux-fb/gdkfb.h"
#endif
#include "gdk/gdkkeysyms.h"
#include "gtkcolorsel.h"
#include "gtkhsv.h"
#include "gtkwindow.h"
#include "gtkselection.h"
#include "gtkdnd.h"
#include "gtkdrawingarea.h"
#include "gtksignal.h"
#include "gtkhbox.h"
#include "gtkhbbox.h"
#include "gtkrc.h"
#include "gtkframe.h"
#include "gtktable.h"
#include "gtklabel.h"
#include "gtkpixmap.h"
#include "gtkspinbutton.h"
#include "gtkrange.h"
#include "gtkhscale.h"
#include "gtkentry.h"
#include "gtkbutton.h"
#include "gtkhseparator.h"
#include "gtktooltips.h"
#include "gtkinvisible.h"
#include "gtkmenuitem.h"
#include "gtkmain.h"
#include "gtksettings.h"
#include "gtkintl.h"
#include <string.h>
/* Number of elements in the custom palatte */
#define GTK_CUSTOM_PALETTE_WIDTH 10
#define GTK_CUSTOM_PALETTE_HEIGHT 2
/* Conversion between 0->1 double and and guint16. See
* scale_round() below for more general conversions
*/
#define SCALE(i) (i / 65535.)
#define UNSCALE(d) ((guint16)(d * 65535 + 0.5))
enum {
COLOR_CHANGED,
LAST_SIGNAL
};
enum {
PROP_0,
PROP_HAS_PALETTE,
PROP_HAS_OPACITY_CONTROL,
PROP_CURRENT_COLOR,
PROP_CURRENT_ALPHA,
};
enum {
COLORSEL_RED = 0,
COLORSEL_GREEN = 1,
COLORSEL_BLUE = 2,
COLORSEL_OPACITY = 3,
COLORSEL_HUE,
COLORSEL_SATURATION,
COLORSEL_VALUE,
COLORSEL_NUM_CHANNELS
};
typedef struct _ColorSelectionPrivate ColorSelectionPrivate;
struct _ColorSelectionPrivate
{
guint has_opacity : 1;
guint has_palette : 1;
guint changing : 1;
guint default_set : 1;
guint default_alpha_set : 1;
gdouble color[COLORSEL_NUM_CHANNELS];
gdouble old_color[COLORSEL_NUM_CHANNELS];
GtkWidget *triangle_colorsel;
GtkWidget *hue_spinbutton;
GtkWidget *sat_spinbutton;
GtkWidget *val_spinbutton;
GtkWidget *red_spinbutton;
GtkWidget *green_spinbutton;
GtkWidget *blue_spinbutton;
GtkWidget *opacity_slider;
GtkWidget *opacity_label;
GtkWidget *opacity_entry;
GtkWidget *palette_frame;
GtkWidget *hex_entry;
/* The Palette code */
GtkWidget *custom_palette [GTK_CUSTOM_PALETTE_WIDTH][GTK_CUSTOM_PALETTE_HEIGHT];
/* The color_sample stuff */
GtkWidget *sample_area;
GtkWidget *old_sample;
GtkWidget *cur_sample;
GtkWidget *colorsel;
/* Tooltips group */
GtkTooltips *tooltips;
/* Window for grabbing on */
GtkWidget *dropper_grab_widget;
/* Connection to settings */
guint settings_connection;
};
static void gtk_color_selection_init (GtkColorSelection *colorsel);
static void gtk_color_selection_class_init (GtkColorSelectionClass *klass);
static void gtk_color_selection_destroy (GtkObject *object);
static void gtk_color_selection_finalize (GObject *object);
static void update_color (GtkColorSelection *colorsel);
static void gtk_color_selection_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_color_selection_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static gint gtk_color_selection_get_palette_size (GtkColorSelection *colorsel);
static gboolean gtk_color_selection_get_palette_color (GtkColorSelection *colorsel,
gint index,
GdkColor *color);
static void gtk_color_selection_set_palette_color (GtkColorSelection *colorsel,
gint index,
GdkColor *color);
static void gtk_color_selection_unset_palette_color (GtkColorSelection *colorsel,
gint index);
static gpointer parent_class = NULL;
static guint color_selection_signals[LAST_SIGNAL] = { 0 };
static gchar* default_colors = "black:white:gray50:red:purple:blue:light blue:green:yellow:orange:lavender:brown:goldenrod4:dodger blue:pink:light green:gray10:gray30:gray75:gray90";
static GtkColorSelectionChangePaletteFunc change_palette_hook = NULL;
static GdkColor current_colors[GTK_CUSTOM_PALETTE_WIDTH * GTK_CUSTOM_PALETTE_HEIGHT];
/* The cursor for the dropper */
#define DROPPER_WIDTH 17
#define DROPPER_HEIGHT 17
#define DROPPER_X_HOT 2
#define DROPPER_Y_HOT 16
static char dropper_bits[] = {
0xff, 0x8f, 0x01, 0xff, 0x77, 0x01, 0xff, 0xfb, 0x00, 0xff, 0xf8, 0x00,
0x7f, 0xff, 0x00, 0xff, 0x7e, 0x01, 0xff, 0x9d, 0x01, 0xff, 0xd8, 0x01,
0x7f, 0xd4, 0x01, 0x3f, 0xee, 0x01, 0x1f, 0xff, 0x01, 0x8f, 0xff, 0x01,
0xc7, 0xff, 0x01, 0xe3, 0xff, 0x01, 0xf3, 0xff, 0x01, 0xfd, 0xff, 0x01,
0xff, 0xff, 0x01, };
static char dropper_mask[] = {
0x00, 0x70, 0x00, 0x00, 0xf8, 0x00, 0x00, 0xfc, 0x01, 0x00, 0xff, 0x01,
0x80, 0xff, 0x01, 0x00, 0xff, 0x00, 0x00, 0x7f, 0x00, 0x80, 0x3f, 0x00,
0xc0, 0x3f, 0x00, 0xe0, 0x13, 0x00, 0xf0, 0x01, 0x00, 0xf8, 0x00, 0x00,
0x7c, 0x00, 0x00, 0x3e, 0x00, 0x00, 0x1e, 0x00, 0x00, 0x0d, 0x00, 0x00,
0x02, 0x00, 0x00, };
static GdkCursor *picker_cursor = NULL;
/* XPM */
static char *picker[] = {
/* columns rows colors chars-per-pixel */
"25 25 8 1",
" c Gray0",
". c #020202",
"X c Gray12",
"o c Gray13",
"O c Gray52",
"+ c #929292",
"@ c Gray100",
"# c None",
/* pixels */
"#########################",
"#########################",
"#########################",
"#########################",
"#########################",
"################# #####",
"################ ####",
"################ +###",
"############# +###",
"############## ++###",
"#############+@ +++####",
"############+@@@ +######",
"###########+@@@ + +######",
"##########+@@@ ++#+######",
"#########+@@@ ++#########",
"########+@@@ ++##########",
"#######+@@@ ++###########",
"######+@@@ ++############",
"######+@@ ++#############",
"#####+@ ++##############",
"###### +++###############",
"#########################",
"#########################",
"#########################",
"#########################"
};
/*
*
* The Sample Color
*
*/
#define SAMPLE_WIDTH 64
#define SAMPLE_HEIGHT 28
static void color_sample_draw_sample (GtkColorSelection *colorsel, int which);
static void color_sample_draw_samples (GtkColorSelection *colorsel);
static void
color_sample_drag_begin (GtkWidget *widget,
GdkDragContext *context,
gpointer data)
{
GtkColorSelection *colorsel = data;
ColorSelectionPrivate *priv;
GtkWidget *window;
gdouble colors[4];
gdouble *colsrc;
GdkColor bg;
gint n, i;
priv = colorsel->private_data;
window = gtk_window_new (GTK_WINDOW_POPUP);
gtk_widget_set_app_paintable (GTK_WIDGET (window), TRUE);
gtk_widget_set_usize (window, 48, 32);
gtk_widget_realize (window);
gtk_object_set_data_full (GTK_OBJECT (widget),
"gtk-color-selection-drag-window",
window,
(GtkDestroyNotify) gtk_widget_destroy);
if (widget == priv->old_sample)
colsrc = priv->old_color;
else
colsrc = priv->color;
for (i=0, n = COLORSEL_RED; n <= COLORSEL_BLUE; n++)
{
colors[i++] = colsrc[n];
}
if (priv->has_opacity)
{
colors[i] = colsrc[COLORSEL_OPACITY];
}
bg.red = 0xffff * colors[0];
bg.green = 0xffff * colors[1];
bg.blue = 0xffff * colors[2];
gdk_color_alloc (gtk_widget_get_colormap (window), &bg);
gdk_window_set_background (window->window, &bg);
gtk_drag_set_icon_widget (context, window, -2, -2);
}
static void
color_sample_drag_end (GtkWidget *widget,
GdkDragContext *context,
gpointer data)
{
gtk_object_set_data (GTK_OBJECT (widget), "gtk-color-selection-drag-window", NULL);
}
static void
color_sample_drop_handle (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
GtkSelectionData *selection_data,
guint info,
guint time,
gpointer data)
{
GtkColorSelection *colorsel = data;
ColorSelectionPrivate *priv;
guint16 *vals;
gdouble color[4];
priv = colorsel->private_data;
/* This is currently a guint16 array of the format:
* R
* G
* B
* opacity
*/
if (selection_data->length < 0)
return;
if ((selection_data->format != 16) ||
(selection_data->length != 8))
{
g_warning ("Received invalid color data\n");
return;
}
vals = (guint16 *)selection_data->data;
if (widget == priv->cur_sample)
{
color[0] = (gdouble)vals[0] / 0xffff;
color[1] = (gdouble)vals[1] / 0xffff;
color[2] = (gdouble)vals[2] / 0xffff;
color[3] = (gdouble)vals[3] / 0xffff;
gtk_color_selection_set_color (colorsel, color);
}
}
static void
color_sample_drag_handle (GtkWidget *widget,
GdkDragContext *context,
GtkSelectionData *selection_data,
guint info,
guint time,
gpointer data)
{
GtkColorSelection *colorsel = data;
ColorSelectionPrivate *priv;
guint16 vals[4];
gdouble *colsrc;
priv = colorsel->private_data;
if (widget == priv->old_sample)
colsrc = priv->old_color;
else
colsrc = priv->color;
vals[0] = colsrc[COLORSEL_RED] * 0xffff;
vals[1] = colsrc[COLORSEL_GREEN] * 0xffff;
vals[2] = colsrc[COLORSEL_BLUE] * 0xffff;
vals[3] = priv->has_opacity ? colsrc[COLORSEL_OPACITY] * 0xffff : 0xffff;
gtk_selection_data_set (selection_data,
gdk_atom_intern ("application/x-color", FALSE),
16, (guchar *)vals, 8);
}
/* which = 0 means draw old sample, which = 1 means draw new */
static void
color_sample_draw_sample (GtkColorSelection *colorsel, int which)
{
GtkWidget *da;
gint x, y, i, wid, heig, f, n, goff;
guchar c[3 * 2], cc[3 * 4], *cp = c;
gdouble o;
guchar *buf;
ColorSelectionPrivate *priv;
g_return_if_fail (colorsel != NULL);
priv = colorsel->private_data;
g_return_if_fail (priv->sample_area != NULL);
if (!GTK_WIDGET_DRAWABLE (priv->sample_area))
return;
if (which == 0)
{
da = priv->old_sample;
for (n = 0, i = COLORSEL_RED; n < 3; n++, i++)
c[n] = (guchar) (UNSCALE (priv->old_color[i]) >> 8);
goff = 0;
}
else
{
da = priv->cur_sample;
for (n = 0, i = COLORSEL_RED; n < 3; n++, i++)
c[n] = (guchar) (UNSCALE (priv->color[i]) >> 8);
goff = priv->old_sample->allocation.width % 32;
}
wid = da->allocation.width;
heig = da->allocation.height;
buf = g_new (guchar, 3 * wid * heig);
#if 0
i = COLORSEL_RED;
for (n = 0; n < 3; n++)
{
c[n] = (guchar) (255.0 * priv->old_color[i]);
c[n + 3] = (guchar) (255.0 * priv->color[i++]);
}
#endif
if (priv->has_opacity)
{
o = (which) ? priv->color[COLORSEL_OPACITY] : priv->old_color[COLORSEL_OPACITY];
for (n = 0; n < 3; n++)
{
cc[n] = (guchar) ((1.0 - o) * 192 + (o * (gdouble) c[n]));
cc[n + 3] = (guchar) ((1.0 - o) * 128 + (o * (gdouble) c[n]));
}
cp = cc;
}
i = 0;
for (y = 0; y < heig; y++)
{
for (x = 0; x < wid; x++)
{
if (priv->has_opacity)
f = 3 * ((((goff + x) % 32) < 16) ^ ((y % 32) < 16));
else
f = 0;
for (n = 0; n < 3; n++)
buf[i++] = cp[n + f];
}
}
gdk_draw_rgb_image (da->window,
da->style->black_gc,
0, 0,
wid, heig,
GDK_RGB_DITHER_NORMAL,
buf,
3*wid);
g_free (buf);
}
static void
color_sample_draw_samples (GtkColorSelection *colorsel)
{
color_sample_draw_sample (colorsel, 0);
color_sample_draw_sample (colorsel, 1);
}
static void
color_old_sample_expose (GtkWidget *da,
GdkEventExpose *event,
GtkColorSelection *colorsel)
{
color_sample_draw_sample (colorsel, 0);
}
static void
color_cur_sample_expose (GtkWidget *da,
GdkEventExpose *event,
GtkColorSelection *colorsel)
{
color_sample_draw_sample (colorsel, 1);
}
static void
color_sample_setup_dnd (GtkColorSelection *colorsel, GtkWidget *sample)
{
static const GtkTargetEntry targets[] = {
{ "application/x-color", 0 }
};
ColorSelectionPrivate *priv;
priv = colorsel->private_data;
gtk_drag_source_set (sample,
GDK_BUTTON1_MASK | GDK_BUTTON3_MASK,
targets, 1,
GDK_ACTION_COPY | GDK_ACTION_MOVE);
gtk_signal_connect (GTK_OBJECT (sample),
"drag_begin",
GTK_SIGNAL_FUNC (color_sample_drag_begin),
colorsel);
if (sample == priv->cur_sample)
{
gtk_drag_dest_set (sample,
GTK_DEST_DEFAULT_HIGHLIGHT |
GTK_DEST_DEFAULT_MOTION |
GTK_DEST_DEFAULT_DROP,
targets, 1,
GDK_ACTION_COPY);
gtk_signal_connect (GTK_OBJECT (sample),
"drag_end",
GTK_SIGNAL_FUNC (color_sample_drag_end),
colorsel);
}
gtk_signal_connect (GTK_OBJECT (sample),
"drag_data_get",
GTK_SIGNAL_FUNC (color_sample_drag_handle),
colorsel);
gtk_signal_connect (GTK_OBJECT (sample),
"drag_data_received",
GTK_SIGNAL_FUNC (color_sample_drop_handle),
colorsel);
}
static void
color_sample_new (GtkColorSelection *colorsel)
{
ColorSelectionPrivate *priv;
priv = colorsel->private_data;
priv->sample_area = gtk_hbox_new (FALSE, 0);
priv->old_sample = gtk_drawing_area_new ();
priv->cur_sample = gtk_drawing_area_new ();
/* We need enter/leave to do tooltips */
gtk_widget_add_events (priv->old_sample,
GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK);
gtk_widget_add_events (priv->cur_sample,
GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK);
gtk_box_pack_start (GTK_BOX (priv->sample_area), priv->old_sample,
TRUE, TRUE, 0);
gtk_box_pack_start (GTK_BOX (priv->sample_area), priv->cur_sample,
TRUE, TRUE, 0);
gtk_signal_connect (GTK_OBJECT (priv->old_sample), "expose_event",
GTK_SIGNAL_FUNC (color_old_sample_expose),
colorsel);
gtk_signal_connect (GTK_OBJECT (priv->cur_sample), "expose_event",
GTK_SIGNAL_FUNC (color_cur_sample_expose),
colorsel);
color_sample_setup_dnd (colorsel, priv->old_sample);
color_sample_setup_dnd (colorsel, priv->cur_sample);
gtk_tooltips_set_tip (priv->tooltips,
priv->old_sample,
_("The previously-selected color, for comparison to the color you're selecting now. You can drag this color to a palette entry, or select this color as current by dragging it to the other color swatch alongside."), NULL);
gtk_tooltips_set_tip (priv->tooltips,
priv->cur_sample,
_("The color you've chosen. You can drag this color to a palette entry to save it for use in the future."), NULL);
gtk_widget_show_all (priv->sample_area);
}
/*
*
* The palette area code
*
*/
#define CUSTOM_PALETTE_ENTRY_WIDTH 20
#define CUSTOM_PALETTE_ENTRY_HEIGHT 20
static void
palette_get_color (GtkWidget *drawing_area, gdouble *color)
{
gdouble *color_val;
g_return_if_fail (color != NULL);
color_val = gtk_object_get_data (GTK_OBJECT (drawing_area), "color_val");
if (color_val == NULL)
{
/* Default to white for no good reason */
color[0] = 1.0;
color[1] = 1.0;
color[2] = 1.0;
color[3] = 1.0;
return;
}
color[0] = color_val[0];
color[1] = color_val[1];
color[2] = color_val[2];
color[3] = 1.0;
}
#define INTENSITY(r, g, b) ((r) * 0.30 + (g) * 0.59 + (b) * 0.11)
static void
palette_paint (GtkWidget *drawing_area,
GdkRectangle *area,
gpointer data)
{
if (drawing_area->window == NULL)
return;
gdk_window_clear_area (drawing_area->window,
area->x,
area->y,
area->width,
area->height);
if (GTK_WIDGET_HAS_FOCUS (drawing_area))
{
GdkGC *gc;
gdouble color[4];
palette_get_color (drawing_area, color);
if (INTENSITY (color[0], color[1], color[2]) > 0.5)
gc = drawing_area->style->black_gc;
else
gc = drawing_area->style->white_gc;
gdk_draw_rectangle (drawing_area->window,
gc, FALSE, 0, 0,
drawing_area->allocation.width - 1,
drawing_area->allocation.height - 1);
}
}
static void
palette_drag_begin (GtkWidget *widget,
GdkDragContext *context,
gpointer data)
{
GtkColorSelection *colorsel = data;
ColorSelectionPrivate *priv;
GtkWidget *window;
gdouble colors[4];
GdkColor bg;
priv = colorsel->private_data;
window = gtk_window_new (GTK_WINDOW_POPUP);
gtk_widget_set_app_paintable (GTK_WIDGET (window), TRUE);
gtk_widget_set_usize (window, 48, 32);
gtk_widget_realize (window);
gtk_object_set_data_full (GTK_OBJECT (widget),
"gtk-color-selection-drag-window",
window,
(GtkDestroyNotify) gtk_widget_destroy);
palette_get_color (widget, colors);
bg.red = 0xffff * colors[0];
bg.green = 0xffff * colors[1];
bg.blue = 0xffff * colors[2];
gdk_color_alloc (gtk_widget_get_colormap (window), &bg);
gdk_window_set_background (window->window, &bg);
gtk_drag_set_icon_widget (context, window, -2, -2);
}
static void
palette_drag_handle (GtkWidget *widget,
GdkDragContext *context,
GtkSelectionData *selection_data,
guint info,
guint time,
gpointer data)
{
guint16 vals[4];
gdouble colsrc[4];
palette_get_color (widget, colsrc);
vals[0] = colsrc[COLORSEL_RED] * 0xffff;
vals[1] = colsrc[COLORSEL_GREEN] * 0xffff;
vals[2] = colsrc[COLORSEL_BLUE] * 0xffff;
vals[3] = 0xffff;
gtk_selection_data_set (selection_data,
gdk_atom_intern ("application/x-color", FALSE),
16, (guchar *)vals, 8);
}
static void
palette_drag_end (GtkWidget *widget,
GdkDragContext *context,
gpointer data)
{
gtk_object_set_data (GTK_OBJECT (widget), "gtk-color-selection-drag-window", NULL);
}
/* Changes the model color */
static void
palette_change_color (GtkWidget *drawing_area,
GtkColorSelection *colorsel,
gdouble *color)
{
gint x, y;
ColorSelectionPrivate *priv;
GdkColor gdk_color;
g_return_if_fail (GTK_IS_COLOR_SELECTION (colorsel));
g_return_if_fail (GTK_IS_DRAWING_AREA (drawing_area));
priv = colorsel->private_data;
gdk_color.red = UNSCALE (color[0]);
gdk_color.green = UNSCALE (color[1]);
gdk_color.blue = UNSCALE (color[2]);
x = 0;
while (x < GTK_CUSTOM_PALETTE_WIDTH)
{
y = 0;
while (y < GTK_CUSTOM_PALETTE_HEIGHT)
{
if (priv->custom_palette[x][y] == drawing_area)
goto out;
++y;
}
++x;
}
out:
g_assert (x < GTK_CUSTOM_PALETTE_WIDTH || y < GTK_CUSTOM_PALETTE_HEIGHT);
current_colors[y * GTK_CUSTOM_PALETTE_WIDTH + x] = gdk_color;
if (change_palette_hook)
(* change_palette_hook) (current_colors, GTK_CUSTOM_PALETTE_WIDTH * GTK_CUSTOM_PALETTE_HEIGHT);
}
/* Changes the view color */
static void
palette_set_color (GtkWidget *drawing_area,
GtkColorSelection *colorsel,
gdouble *color)
{
gdouble *new_color = g_new (double, 4);
gdouble *old_color;
GdkColor gdk_color;
gdk_color.red = UNSCALE (color[0]);
gdk_color.green = UNSCALE (color[1]);
gdk_color.blue = UNSCALE (color[2]);
gtk_widget_modify_bg (drawing_area, GTK_STATE_NORMAL, &gdk_color);
if (GPOINTER_TO_INT (gtk_object_get_data (GTK_OBJECT (drawing_area), "color_set")) == 0)
{
static const GtkTargetEntry targets[] = {
{ "application/x-color", 0 }
};
gtk_drag_source_set (drawing_area,
GDK_BUTTON1_MASK | GDK_BUTTON3_MASK,
targets, 1,
GDK_ACTION_COPY | GDK_ACTION_MOVE);
gtk_signal_connect (GTK_OBJECT (drawing_area),
"drag_begin",
GTK_SIGNAL_FUNC (palette_drag_begin),
colorsel);
gtk_signal_connect (GTK_OBJECT (drawing_area),
"drag_data_get",
GTK_SIGNAL_FUNC (palette_drag_handle),
colorsel);
gtk_object_set_data (GTK_OBJECT (drawing_area), "color_set", GINT_TO_POINTER (1));
}
else
{
old_color = (gdouble *) gtk_object_get_data (GTK_OBJECT (drawing_area), "color_val");
if (old_color)
{
g_free (old_color);
}
}
new_color[0] = color[0];
new_color[1] = color[1];
new_color[2] = color[2];
new_color[3] = 1.0;
gtk_object_set_data (GTK_OBJECT (drawing_area), "color_val", new_color);
}
static void
palette_expose (GtkWidget *drawing_area,
GdkEventExpose *event,
gpointer data)
{
if (drawing_area->window == NULL)
return;
palette_paint (drawing_area, &(event->area), data);
}
static void
popup_position_func (GtkMenu *menu,
gint *x,
gint *y,
gboolean *push_in,
gpointer user_data)
{
GtkWidget *widget;
GtkRequisition req;
gint root_x, root_y;
widget = GTK_WIDGET (user_data);
g_return_if_fail (GTK_WIDGET_REALIZED (widget));
gdk_window_get_origin (widget->window, &root_x, &root_y);
gtk_widget_size_request (GTK_WIDGET (menu), &req);
/* Put corner of menu centered on color cell */
*x = root_x + widget->allocation.width / 2;
*y = root_y + widget->allocation.height / 2;
/* Ensure sanity */
*x = CLAMP (*x, 0, MAX (0, gdk_screen_width () - req.width));
*y = CLAMP (*y, 0, MAX (0, gdk_screen_height () - req.height));
}
static void
save_color_selected (GtkWidget *menuitem,
gpointer data)
{
GtkColorSelection *colorsel;
GtkWidget *drawing_area;
ColorSelectionPrivate *priv;
drawing_area = GTK_WIDGET (data);
colorsel = GTK_COLOR_SELECTION (g_object_get_data (G_OBJECT (drawing_area),
"gtk-color-sel"));
priv = colorsel->private_data;
palette_change_color (drawing_area, colorsel, priv->color);
}
static void
do_popup (GtkColorSelection *colorsel,
GtkWidget *drawing_area,
guint32 timestamp)
{
GtkWidget *menu;
GtkWidget *mi;
g_object_set_data (G_OBJECT (drawing_area),
"gtk-color-sel",
colorsel);
menu = gtk_menu_new ();
mi = gtk_menu_item_new_with_mnemonic (_("_Save color here"));
gtk_signal_connect (GTK_OBJECT (mi), "activate",
GTK_SIGNAL_FUNC (save_color_selected),
drawing_area);
gtk_menu_shell_append (GTK_MENU_SHELL (menu), mi);
gtk_widget_show_all (mi);
gtk_menu_popup (GTK_MENU (menu), NULL, NULL,
popup_position_func, drawing_area,
3, timestamp);
}
static gint
palette_press (GtkWidget *drawing_area,
GdkEventButton *event,
gpointer data)
{
GtkColorSelection *colorsel = GTK_COLOR_SELECTION (data);
gtk_widget_grab_focus (drawing_area);
if (event->button == 1 &&
event->type == GDK_BUTTON_PRESS)
{
if (GPOINTER_TO_INT (gtk_object_get_data (GTK_OBJECT (drawing_area), "color_set")) != 0)
{
gdouble color[4];
palette_get_color (drawing_area, color);
gtk_color_selection_set_color (GTK_COLOR_SELECTION (data), color);
}
}
if (event->button == 3 &&
event->type == GDK_BUTTON_PRESS)
{
do_popup (colorsel, drawing_area, event->time);
}
return TRUE;
}
static void
palette_unset_color (GtkWidget *drawing_area)
{
if (GPOINTER_TO_INT (gtk_object_get_data (GTK_OBJECT (drawing_area), "color_set")) == 0)
return;
gtk_widget_reset_rc_styles (drawing_area);
gtk_object_set_data (GTK_OBJECT (drawing_area), "color_set", GINT_TO_POINTER (0));
}
static void
palette_drop_handle (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
GtkSelectionData *selection_data,
guint info,
guint time,
gpointer data)
{
guint16 *vals;
gdouble color[4];
if (selection_data->length < 0)
return;
if ((selection_data->format != 16) ||
(selection_data->length != 8))
{
g_warning ("Received invalid color data\n");
return;
}
vals = (guint16 *)selection_data->data;
color[0] = (gdouble)vals[0] / 0xffff;
color[1] = (gdouble)vals[1] / 0xffff;
color[2] = (gdouble)vals[2] / 0xffff;
color[3] = (gdouble)vals[3] / 0xffff;
palette_change_color (widget, GTK_COLOR_SELECTION (data), color);
gtk_color_selection_set_color (GTK_COLOR_SELECTION (data), color);
}
static gint
palette_activate (GtkWidget *widget,
GdkEventKey *event,
gpointer data)
{
/* should have a drawing area subclass with an activate signal */
if ((event->keyval == GDK_space) ||
(event->keyval == GDK_Return) ||
(event->keyval == GDK_KP_Enter) ||
(event->keyval == GDK_KP_Space))
{
if (GPOINTER_TO_INT (gtk_object_get_data (GTK_OBJECT (widget), "color_set")) != 0)
{
gdouble color[4];
palette_get_color (widget, color);
gtk_color_selection_set_color (GTK_COLOR_SELECTION (data), color);
}
return TRUE;
}
return FALSE;
}
static void
palette_popup (GtkWidget *widget,
gpointer data)
{
GtkColorSelection *colorsel = GTK_COLOR_SELECTION (data);
do_popup (colorsel, widget, GDK_CURRENT_TIME);
}
static GtkWidget*
palette_new (GtkColorSelection *colorsel)
{
GtkWidget *retval;
ColorSelectionPrivate *priv;
static const GtkTargetEntry targets[] = {
{ "application/x-color", 0 }
};
priv = colorsel->private_data;
retval = gtk_drawing_area_new ();
GTK_WIDGET_SET_FLAGS (retval, GTK_CAN_FOCUS);
gtk_object_set_data (GTK_OBJECT (retval), "color_set", GINT_TO_POINTER (0));
gtk_widget_set_events (retval, GDK_BUTTON_PRESS_MASK
| GDK_BUTTON_RELEASE_MASK
| GDK_EXPOSURE_MASK
| GDK_ENTER_NOTIFY_MASK
| GDK_LEAVE_NOTIFY_MASK);
gtk_signal_connect (GTK_OBJECT (retval), "expose_event",
GTK_SIGNAL_FUNC (palette_expose), colorsel);
gtk_signal_connect (GTK_OBJECT (retval), "button_press_event",
GTK_SIGNAL_FUNC (palette_press), colorsel);
gtk_signal_connect (GTK_OBJECT (retval), "key_press_event",
GTK_SIGNAL_FUNC (palette_activate), colorsel);
gtk_signal_connect (GTK_OBJECT (retval), "popup_menu",
GTK_SIGNAL_FUNC (palette_popup), colorsel);
gtk_drag_dest_set (retval,
GTK_DEST_DEFAULT_HIGHLIGHT |
GTK_DEST_DEFAULT_MOTION |
GTK_DEST_DEFAULT_DROP,
targets, 1,
GDK_ACTION_COPY);
gtk_signal_connect (GTK_OBJECT (retval), "drag_end",
GTK_SIGNAL_FUNC (palette_drag_end), NULL);
gtk_signal_connect (GTK_OBJECT (retval), "drag_data_received",
GTK_SIGNAL_FUNC (palette_drop_handle), colorsel);
gtk_tooltips_set_tip (priv->tooltips,
retval,
_("Click this palette entry to make it the current color. To change this entry, drag a color swatch here or right-click it and select \"Save color here.\""),
NULL);
return retval;
}
/*
*
* The actual GtkColorSelection widget
*
*/
static void
initialize_cursor (void)
{
GdkColor fg, bg;
GdkPixmap *pixmap =
gdk_bitmap_create_from_data (NULL,
dropper_bits,
DROPPER_WIDTH, DROPPER_HEIGHT);
GdkPixmap *mask =
gdk_bitmap_create_from_data (NULL,
dropper_mask,
DROPPER_WIDTH, DROPPER_HEIGHT);
gdk_color_white (gdk_colormap_get_system (), &bg);
gdk_color_black (gdk_colormap_get_system (), &fg);
picker_cursor = gdk_cursor_new_from_pixmap (pixmap, mask, &fg, &bg, DROPPER_X_HOT ,DROPPER_Y_HOT);
gdk_pixmap_unref (pixmap);
gdk_pixmap_unref (mask);
}
static void
grab_color_at_mouse (GtkWidget *invisible,
gint x_root,
gint y_root,
gpointer data)
{
GdkImage *image;
guint32 pixel;
GtkColorSelection *colorsel = data;
ColorSelectionPrivate *priv;
GdkColormap *colormap = gdk_colormap_get_system ();
GdkColor color;
priv = colorsel->private_data;
image = gdk_image_get (GDK_ROOT_PARENT (), x_root, y_root, 1, 1);
pixel = gdk_image_get_pixel (image, 0, 0);
gdk_image_unref (image);
gdk_colormap_query_color (colormap, pixel, &color);
priv->color[COLORSEL_RED] = SCALE (color.red);
priv->color[COLORSEL_GREEN] = SCALE (color.green);
priv->color[COLORSEL_BLUE] = SCALE (color.blue);
gtk_rgb_to_hsv (priv->color[COLORSEL_RED],
priv->color[COLORSEL_GREEN],
priv->color[COLORSEL_BLUE],
&priv->color[COLORSEL_HUE],
&priv->color[COLORSEL_SATURATION],
&priv->color[COLORSEL_VALUE]);
update_color (colorsel);
}
static void
shutdown_eyedropper (GtkWidget *widget)
{
GtkColorSelection *colorsel;
ColorSelectionPrivate *priv;
colorsel = GTK_COLOR_SELECTION (widget);
priv = colorsel->private_data;
gdk_keyboard_ungrab (gtk_get_current_event_time ());
gdk_pointer_ungrab (gtk_get_current_event_time ());
gtk_grab_remove (priv->dropper_grab_widget);
}
static void
mouse_motion (GtkWidget *invisible,
GdkEventMotion *event,
gpointer data)
{
grab_color_at_mouse (invisible, event->x_root, event->y_root, data);
}
static gboolean
mouse_release (GtkWidget *invisible,
GdkEventButton *event,
gpointer data)
{
GtkColorSelection *colorsel = data;
ColorSelectionPrivate *priv;
priv = colorsel->private_data;
if (event->button != 1)
return FALSE;
grab_color_at_mouse (invisible, event->x_root, event->y_root, data);
shutdown_eyedropper (GTK_WIDGET (data));
gtk_signal_disconnect_by_func (GTK_OBJECT (invisible),
GTK_SIGNAL_FUNC (mouse_motion), data);
gtk_signal_disconnect_by_func (GTK_OBJECT (invisible),
GTK_SIGNAL_FUNC (mouse_release), data);
return TRUE;
}
/* Helper Functions */
static gboolean mouse_press (GtkWidget *invisible,
GdkEventButton *event,
gpointer data);
static gboolean
key_press (GtkWidget *invisible,
GdkEventKey *event,
gpointer data)
{
if (event->keyval == GDK_Escape)
{
shutdown_eyedropper (data);
gtk_signal_disconnect_by_func (GTK_OBJECT (invisible),
GTK_SIGNAL_FUNC (mouse_press),
data);
gtk_signal_disconnect_by_func (GTK_OBJECT (invisible),
GTK_SIGNAL_FUNC (key_press),
data);
return TRUE;
}
return FALSE;
}
static gboolean
mouse_press (GtkWidget *invisible,
GdkEventButton *event,
gpointer data)
{
GtkColorSelection *colorsel = data;
ColorSelectionPrivate *priv;
priv = colorsel->private_data;
if (event->type == GDK_BUTTON_PRESS &&
event->button == 1)
{
gtk_signal_connect (GTK_OBJECT (invisible), "motion_notify_event",
GTK_SIGNAL_FUNC (mouse_motion),
data);
gtk_signal_connect (GTK_OBJECT (invisible), "button_release_event",
GTK_SIGNAL_FUNC (mouse_release),
data);
gtk_signal_disconnect_by_func (GTK_OBJECT (invisible),
GTK_SIGNAL_FUNC (mouse_press),
data);
gtk_signal_disconnect_by_func (GTK_OBJECT (invisible),
GTK_SIGNAL_FUNC (key_press),
data);
return TRUE;
}
return FALSE;
}
/* when the button is clicked */
static void
get_screen_color (GtkWidget *button)
{
GtkColorSelection *colorsel = gtk_object_get_data (GTK_OBJECT (button), "COLORSEL");
ColorSelectionPrivate *priv = colorsel->private_data;
if (picker_cursor == NULL)
{
initialize_cursor ();
}
if (priv->dropper_grab_widget == NULL)
{
priv->dropper_grab_widget = gtk_invisible_new ();
gtk_widget_add_events (priv->dropper_grab_widget,
GDK_BUTTON_RELEASE_MASK | GDK_BUTTON_PRESS_MASK | GDK_POINTER_MOTION_MASK);
gtk_widget_show (priv->dropper_grab_widget);
}
if (gdk_keyboard_grab (priv->dropper_grab_widget->window,
FALSE,
gtk_get_current_event_time ()) != GDK_GRAB_SUCCESS)
{
g_warning ("Failed to grab keyboard to do eyedropper");
return;
}
if (gdk_pointer_grab (priv->dropper_grab_widget->window,
FALSE,
GDK_BUTTON_RELEASE_MASK | GDK_BUTTON_PRESS_MASK | GDK_POINTER_MOTION_MASK,
NULL,
picker_cursor,
gtk_get_current_event_time ()) != GDK_GRAB_SUCCESS)
{
gdk_keyboard_ungrab (GDK_CURRENT_TIME);
g_warning ("Failed to grab pointer to do eyedropper");
return;
}
gtk_grab_add (priv->dropper_grab_widget);
gtk_signal_connect (GTK_OBJECT (priv->dropper_grab_widget), "button_press_event",
GTK_SIGNAL_FUNC (mouse_press), colorsel);
gtk_signal_connect (GTK_OBJECT (priv->dropper_grab_widget), "key_press_event",
GTK_SIGNAL_FUNC (key_press), colorsel);
}
static void
hex_changed (GtkWidget *hex_entry,
gpointer data)
{
GtkColorSelection *colorsel;
ColorSelectionPrivate *priv;
GdkColor color;
gchar *text;
colorsel = GTK_COLOR_SELECTION (data);
priv = colorsel->private_data;
if (priv->changing)
return;
text = gtk_editable_get_chars (GTK_EDITABLE (priv->hex_entry), 0, -1);
if (gdk_color_parse (text, &color))
{
priv->color[COLORSEL_RED] = CLAMP (color.red/65280.0, 0.0, 1.0);
priv->color[COLORSEL_GREEN] = CLAMP (color.green/65280.0, 0.0, 1.0);
priv->color[COLORSEL_BLUE] = CLAMP (color.blue/65280.0, 0.0, 1.0);
gtk_rgb_to_hsv (priv->color[COLORSEL_RED],
priv->color[COLORSEL_GREEN],
priv->color[COLORSEL_BLUE],
&priv->color[COLORSEL_HUE],
&priv->color[COLORSEL_SATURATION],
&priv->color[COLORSEL_VALUE]);
update_color (colorsel);
}
g_free (text);
}
static void
hsv_changed (GtkWidget *hsv,
gpointer data)
{
GtkColorSelection *colorsel;
ColorSelectionPrivate *priv;
colorsel = GTK_COLOR_SELECTION (data);
priv = colorsel->private_data;
if (priv->changing)
return;
gtk_hsv_get_color (GTK_HSV (hsv),
&priv->color[COLORSEL_HUE],
&priv->color[COLORSEL_SATURATION],
&priv->color[COLORSEL_VALUE]);
gtk_hsv_to_rgb (priv->color[COLORSEL_HUE],
priv->color[COLORSEL_SATURATION],
priv->color[COLORSEL_VALUE],
&priv->color[COLORSEL_RED],
&priv->color[COLORSEL_GREEN],
&priv->color[COLORSEL_BLUE]);
update_color (colorsel);
}
static void
adjustment_changed (GtkAdjustment *adjustment,
gpointer data)
{
GtkColorSelection *colorsel;
ColorSelectionPrivate *priv;
colorsel = GTK_COLOR_SELECTION (gtk_object_get_data (GTK_OBJECT (adjustment), "COLORSEL"));
priv = colorsel->private_data;
if (priv->changing)
return;
switch (GPOINTER_TO_INT (data))
{
case COLORSEL_SATURATION:
case COLORSEL_VALUE:
priv->color[GPOINTER_TO_INT (data)] = adjustment->value / 255;
gtk_hsv_to_rgb (priv->color[COLORSEL_HUE],
priv->color[COLORSEL_SATURATION],
priv->color[COLORSEL_VALUE],
&priv->color[COLORSEL_RED],
&priv->color[COLORSEL_GREEN],
&priv->color[COLORSEL_BLUE]);
break;
case COLORSEL_HUE:
priv->color[GPOINTER_TO_INT (data)] = adjustment->value / 360;
gtk_hsv_to_rgb (priv->color[COLORSEL_HUE],
priv->color[COLORSEL_SATURATION],
priv->color[COLORSEL_VALUE],
&priv->color[COLORSEL_RED],
&priv->color[COLORSEL_GREEN],
&priv->color[COLORSEL_BLUE]);
break;
case COLORSEL_RED:
case COLORSEL_GREEN:
case COLORSEL_BLUE:
priv->color[GPOINTER_TO_INT (data)] = adjustment->value / 255;
gtk_rgb_to_hsv (priv->color[COLORSEL_RED],
priv->color[COLORSEL_GREEN],
priv->color[COLORSEL_BLUE],
&priv->color[COLORSEL_HUE],
&priv->color[COLORSEL_SATURATION],
&priv->color[COLORSEL_VALUE]);
break;
default:
priv->color[GPOINTER_TO_INT (data)] = adjustment->value / 255;
break;
}
update_color (colorsel);
}
static void
opacity_entry_changed (GtkWidget *opacity_entry,
gpointer data)
{
GtkColorSelection *colorsel;
ColorSelectionPrivate *priv;
GtkAdjustment *adj;
gchar *text;
colorsel = GTK_COLOR_SELECTION (data);
priv = colorsel->private_data;
if (priv->changing)
return;
text = gtk_editable_get_chars (GTK_EDITABLE (priv->opacity_entry), 0, -1);
adj = gtk_range_get_adjustment (GTK_RANGE (priv->opacity_slider));
gtk_adjustment_set_value (adj, g_strtod (text, NULL));
update_color (colorsel);
g_free (text);
}
static void
make_label_spinbutton (GtkColorSelection *colorsel,
GtkWidget **spinbutton,
gchar *text,
GtkWidget *table,
gint i,
gint j,
gint channel_type,
const gchar *tooltip)
{
GtkWidget *label;
GtkAdjustment *adjust;
ColorSelectionPrivate *priv = colorsel->private_data;
if (channel_type == COLORSEL_HUE)
{
adjust = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 360.0, 1.0, 1.0, 1.0));
}
else
{
adjust = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 255.0, 1.0, 1.0, 1.0));
}
gtk_object_set_data (GTK_OBJECT (adjust), "COLORSEL", colorsel);
*spinbutton = gtk_spin_button_new (adjust, 10.0, 0);
gtk_tooltips_set_tip (priv->tooltips, *spinbutton, tooltip, NULL);
gtk_signal_connect (GTK_OBJECT (adjust), "value_changed",
GTK_SIGNAL_FUNC (adjustment_changed),
GINT_TO_POINTER (channel_type));
label = gtk_label_new_with_mnemonic (text);
gtk_label_set_mnemonic_widget (GTK_LABEL (label), *spinbutton);
gtk_misc_set_alignment (GTK_MISC (label), 1.0, 0.5);
gtk_table_attach_defaults (GTK_TABLE (table), label, i, i+1, j, j+1);
gtk_table_attach_defaults (GTK_TABLE (table), *spinbutton, i+1, i+2, j, j+1);
}
static void
make_palette_frame (GtkColorSelection *colorsel,
GtkWidget *table,
gint i,
gint j)
{
GtkWidget *frame;
ColorSelectionPrivate *priv;
priv = colorsel->private_data;
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
priv->custom_palette[i][j] = palette_new (colorsel);
gtk_widget_set_usize (priv->custom_palette[i][j], CUSTOM_PALETTE_ENTRY_WIDTH, CUSTOM_PALETTE_ENTRY_HEIGHT);
gtk_container_add (GTK_CONTAINER (frame), priv->custom_palette[i][j]);
gtk_table_attach_defaults (GTK_TABLE (table), frame, i, i+1, j, j+1);
}
/* Set the palette entry [x][y] to be the currently selected one. */
static void
set_selected_palette (GtkColorSelection *colorsel, int x, int y)
{
ColorSelectionPrivate *priv = colorsel->private_data;
gtk_widget_grab_focus (priv->custom_palette[x][y]);
}
static double
scale_round (double val, double factor)
{
val = floor (val * factor + 0.5);
val = MAX (val, 0);
val = MIN (val, factor);
return val;
}
static void
update_color (GtkColorSelection *colorsel)
{
ColorSelectionPrivate *priv = colorsel->private_data;
gchar entryval[12];
gchar opacity_text[32];
gchar *ptr;
priv->changing = TRUE;
color_sample_draw_samples (colorsel);
gtk_hsv_set_color (GTK_HSV (priv->triangle_colorsel),
priv->color[COLORSEL_HUE],
priv->color[COLORSEL_SATURATION],
priv->color[COLORSEL_VALUE]);
gtk_adjustment_set_value (gtk_spin_button_get_adjustment
(GTK_SPIN_BUTTON (priv->hue_spinbutton)),
scale_round (priv->color[COLORSEL_HUE], 360));
gtk_adjustment_set_value (gtk_spin_button_get_adjustment
(GTK_SPIN_BUTTON (priv->sat_spinbutton)),
scale_round (priv->color[COLORSEL_SATURATION], 255));
gtk_adjustment_set_value (gtk_spin_button_get_adjustment
(GTK_SPIN_BUTTON (priv->val_spinbutton)),
scale_round (priv->color[COLORSEL_VALUE], 255));
gtk_adjustment_set_value (gtk_spin_button_get_adjustment
(GTK_SPIN_BUTTON (priv->red_spinbutton)),
scale_round (priv->color[COLORSEL_RED], 255));
gtk_adjustment_set_value (gtk_spin_button_get_adjustment
(GTK_SPIN_BUTTON (priv->green_spinbutton)),
scale_round (priv->color[COLORSEL_GREEN], 255));
gtk_adjustment_set_value (gtk_spin_button_get_adjustment
(GTK_SPIN_BUTTON (priv->blue_spinbutton)),
scale_round (priv->color[COLORSEL_BLUE], 255));
gtk_adjustment_set_value (gtk_range_get_adjustment
(GTK_RANGE (priv->opacity_slider)),
scale_round (priv->color[COLORSEL_OPACITY], 255));
g_snprintf (opacity_text, 32, "%.0f", scale_round (priv->color[COLORSEL_OPACITY], 255));
gtk_entry_set_text (GTK_ENTRY (priv->opacity_entry), opacity_text);
g_snprintf (entryval, 11, "#%2X%2X%2X",
(guint) (scale_round (priv->color[COLORSEL_RED], 255)),
(guint) (scale_round (priv->color[COLORSEL_GREEN], 255)),
(guint) (scale_round (priv->color[COLORSEL_BLUE], 255)));
for (ptr = entryval; *ptr; ptr++)
if (*ptr == ' ')
*ptr = '0';
gtk_entry_set_text (GTK_ENTRY (priv->hex_entry), entryval);
priv->changing = FALSE;
g_object_freeze_notify (G_OBJECT (colorsel));
g_object_notify (G_OBJECT (colorsel), "current_color");
g_object_notify (G_OBJECT (colorsel), "current_alpha");
g_object_thaw_notify (G_OBJECT (colorsel));
}
static void
fill_palette_from_string (const gchar *str)
{
GdkColor *colors = NULL;
gint n_colors = 0;
if (str == NULL)
return;
if (!gtk_color_selection_palette_from_string (str, &colors, &n_colors))
return;
if (n_colors > (GTK_CUSTOM_PALETTE_WIDTH * GTK_CUSTOM_PALETTE_HEIGHT))
n_colors = GTK_CUSTOM_PALETTE_WIDTH * GTK_CUSTOM_PALETTE_HEIGHT;
memcpy (current_colors, colors, sizeof (GdkColor) * n_colors);
g_free (colors);
}
static void
palette_change_notify_class (GObject *object,
GParamSpec *pspec)
{
gchar *str = NULL;
g_object_get (object, pspec->name, &str, NULL);
fill_palette_from_string (str);
g_free (str);
}
static void
update_palette (GtkColorSelection *colorsel)
{
gint i, j;
for (i = 0; i < GTK_CUSTOM_PALETTE_HEIGHT; i++)
{
for (j = 0; j < GTK_CUSTOM_PALETTE_WIDTH; j++)
{
gint index;
index = i * GTK_CUSTOM_PALETTE_WIDTH + j;
gtk_color_selection_set_palette_color (colorsel,
index,
&current_colors[index]);
}
}
}
static void
palette_change_notify_instance (GObject *object,
GParamSpec *pspec,
gpointer data)
{
update_palette (GTK_COLOR_SELECTION (data));
}
static void
default_change_palette_func (const GdkColor *colors,
gint n_colors)
{
gchar *str;
str = gtk_color_selection_palette_to_string (colors, n_colors);
gtk_settings_set_string_property (gtk_settings_get_default (),
"gtk-color-palette",
str,
"gtk_color_selection_palette_to_string");
g_free (str);
}
GtkType
gtk_color_selection_get_type (void)
{
static GtkType color_selection_type = 0;
if (!color_selection_type)
{
static const GtkTypeInfo color_selection_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_TYPE_VBOX, &color_selection_info);
}
return color_selection_type;
}
static void
gtk_color_selection_class_init (GtkColorSelectionClass *klass)
{
GtkObjectClass *object_class;
GObjectClass *gobject_class;
gchar *palette;
object_class = GTK_OBJECT_CLASS (klass);
gobject_class = G_OBJECT_CLASS (klass);
parent_class = gtk_type_class (GTK_TYPE_VBOX);
object_class->destroy = gtk_color_selection_destroy;
gobject_class->finalize = gtk_color_selection_finalize;
gobject_class->set_property = gtk_color_selection_set_property;
gobject_class->get_property = gtk_color_selection_get_property;
g_object_class_install_property (gobject_class,
PROP_HAS_OPACITY_CONTROL,
g_param_spec_boolean ("has_opacity_control",
_("Has Opacity Control"),
_("Whether the color selector should allow setting opacity"),
FALSE,
G_PARAM_READABLE | G_PARAM_WRITABLE));
g_object_class_install_property (gobject_class,
PROP_HAS_PALETTE,
g_param_spec_boolean ("has_palette",
_("Has palette"),
_("Whether a palette should be used"),
FALSE,
G_PARAM_READABLE | G_PARAM_WRITABLE));
g_object_class_install_property (gobject_class,
PROP_CURRENT_COLOR,
g_param_spec_boxed ("current_color",
_("Current Color"),
_("The current color"),
GDK_TYPE_COLOR,
G_PARAM_READABLE | G_PARAM_WRITABLE));
g_object_class_install_property (gobject_class,
PROP_CURRENT_ALPHA,
g_param_spec_uint ("current_alpha",
_("Current Alpha"),
_("The current opacity value (0 fully transparent, 65535 fully opaque)"),
0, 65535, 65535,
G_PARAM_READABLE | G_PARAM_WRITABLE));
color_selection_signals[COLOR_CHANGED] =
gtk_signal_new ("color_changed",
GTK_RUN_FIRST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkColorSelectionClass, color_changed),
gtk_marshal_VOID__VOID,
GTK_TYPE_NONE, 0);
gtk_settings_install_property (g_param_spec_string ("gtk-color-palette",
_("Custom palette"),
_("Palette to use in the color selector"),
default_colors,
G_PARAM_READWRITE));
g_object_get (G_OBJECT (gtk_settings_get_default ()),
"gtk-color-palette",
&palette,
NULL);
fill_palette_from_string (palette);
g_free (palette);
change_palette_hook = default_change_palette_func;
g_signal_connect_data (G_OBJECT (gtk_settings_get_default ()),
"notify::gtk-color-palette",
G_CALLBACK (palette_change_notify_class),
NULL, NULL, 0);
}
/* widget functions */
static void
gtk_color_selection_init (GtkColorSelection *colorsel)
{
GtkWidget *top_hbox;
GtkWidget *top_right_vbox;
GtkWidget *table, *label, *hbox, *frame, *vbox;
GtkAdjustment *adjust;
GdkPixmap *dropper_pixmap;
GtkWidget *dropper_image;
GtkWidget *button;
GdkBitmap *mask = NULL;
gint i, j;
ColorSelectionPrivate *priv;
priv = colorsel->private_data = g_new0 (ColorSelectionPrivate, 1);
priv->changing = FALSE;
priv->default_set = FALSE;
priv->default_alpha_set = FALSE;
priv->tooltips = gtk_tooltips_new ();
gtk_box_set_spacing (GTK_BOX (colorsel), 4);
top_hbox = gtk_hbox_new (FALSE, 8);
gtk_box_pack_start (GTK_BOX (colorsel), top_hbox, FALSE, FALSE, 0);
vbox = gtk_vbox_new (FALSE, 4);
priv->triangle_colorsel = gtk_hsv_new ();
gtk_signal_connect (GTK_OBJECT (priv->triangle_colorsel), "changed",
GTK_SIGNAL_FUNC (hsv_changed), colorsel);
gtk_hsv_set_metrics (GTK_HSV (priv->triangle_colorsel), 174, 15);
gtk_box_pack_start (GTK_BOX (top_hbox), vbox, FALSE, FALSE, 0);
gtk_box_pack_start (GTK_BOX (vbox), priv->triangle_colorsel, FALSE, FALSE, 0);
gtk_tooltips_set_tip (priv->tooltips, priv->triangle_colorsel,
_("Select the color you want from the outer ring. Select the darkness or lightness of that color using the inner triangle."), NULL);
hbox = gtk_hbox_new (FALSE, 4);
gtk_box_pack_end (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
frame = gtk_frame_new (NULL);
gtk_widget_set_usize (frame, -1, 30);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
color_sample_new (colorsel);
gtk_container_add (GTK_CONTAINER (frame), priv->sample_area);
gtk_box_pack_start (GTK_BOX (hbox), frame, TRUE, TRUE, 0);
button = gtk_button_new ();
gtk_widget_set_events (button, GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK);
gtk_object_set_data (GTK_OBJECT (button), "COLORSEL", colorsel);
gtk_signal_connect (GTK_OBJECT (button), "clicked",
GTK_SIGNAL_FUNC (get_screen_color), NULL);
dropper_pixmap = gdk_pixmap_colormap_create_from_xpm_d (NULL, gtk_widget_get_colormap (button), &mask, NULL, picker);
dropper_image = gtk_pixmap_new (dropper_pixmap, mask);
gdk_pixmap_unref (dropper_pixmap);
if (mask)
gdk_pixmap_unref (mask);
gtk_container_add (GTK_CONTAINER (button), dropper_image);
gtk_box_pack_end (GTK_BOX (hbox), button, FALSE, FALSE, 0);
gtk_tooltips_set_tip (priv->tooltips,
button,
_("Click the eyedropper, then click a color anywhere on your screen to select that color."), NULL);
top_right_vbox = gtk_vbox_new (FALSE, 4);
gtk_box_pack_start (GTK_BOX (top_hbox), top_right_vbox, FALSE, FALSE, 0);
table = gtk_table_new (8, 6, FALSE);
gtk_box_pack_start (GTK_BOX (top_right_vbox), table, FALSE, FALSE, 0);
gtk_table_set_row_spacings (GTK_TABLE (table), 4);
gtk_table_set_col_spacings (GTK_TABLE (table), 4);
make_label_spinbutton (colorsel, &priv->hue_spinbutton, _("_Hue:"), table, 0, 0, COLORSEL_HUE,
_("Position on the color wheel."));
make_label_spinbutton (colorsel, &priv->sat_spinbutton, _("_Saturation:"), table, 0, 1, COLORSEL_SATURATION,
_("\"Deepness\" of the color."));
make_label_spinbutton (colorsel, &priv->val_spinbutton, _("_Value:"), table, 0, 2, COLORSEL_VALUE,
_("Brightness of the color."));
make_label_spinbutton (colorsel, &priv->red_spinbutton, _("_Red:"), table, 6, 0, COLORSEL_RED,
_("Amount of red light in the color."));
make_label_spinbutton (colorsel, &priv->green_spinbutton, _("_Green:"), table, 6, 1, COLORSEL_GREEN,
_("Amount of green light in the color."));
make_label_spinbutton (colorsel, &priv->blue_spinbutton, _("_Blue:"), table, 6, 2, COLORSEL_BLUE,
_("Amount of blue light in the color."));
gtk_table_attach_defaults (GTK_TABLE (table), gtk_hseparator_new (), 0, 8, 3, 4);
priv->opacity_label = gtk_label_new_with_mnemonic (_("_Opacity:"));
gtk_misc_set_alignment (GTK_MISC (priv->opacity_label), 1.0, 0.5);
gtk_table_attach_defaults (GTK_TABLE (table), priv->opacity_label, 0, 1, 4, 5);
adjust = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 255.0, 1.0, 1.0, 0.0));
gtk_object_set_data (GTK_OBJECT (adjust), "COLORSEL", colorsel);
priv->opacity_slider = gtk_hscale_new (adjust);
gtk_tooltips_set_tip (priv->tooltips,
priv->opacity_slider,
_("Transparency of the currently-selected color."), NULL);
gtk_label_set_mnemonic_widget (GTK_LABEL (priv->opacity_label),
priv->opacity_slider);
gtk_scale_set_draw_value (GTK_SCALE (priv->opacity_slider), FALSE);
gtk_signal_connect (GTK_OBJECT (adjust), "value_changed",
GTK_SIGNAL_FUNC (adjustment_changed),
GINT_TO_POINTER (COLORSEL_OPACITY));
gtk_table_attach_defaults (GTK_TABLE (table), priv->opacity_slider, 1, 7, 4, 5);
priv->opacity_entry = gtk_entry_new ();
gtk_widget_set_usize (priv->opacity_entry, 40, 0);
gtk_signal_connect (GTK_OBJECT (priv->opacity_entry), "activate",
GTK_SIGNAL_FUNC (opacity_entry_changed), colorsel);
gtk_table_attach_defaults (GTK_TABLE (table), priv->opacity_entry, 7, 8, 4, 5);
label = gtk_label_new_with_mnemonic (_("Color _Name:"));
gtk_table_attach_defaults (GTK_TABLE (table), label, 0, 1, 5, 6);
gtk_misc_set_alignment (GTK_MISC (label), 1.0, 0.5);
priv->hex_entry = gtk_entry_new ();
gtk_label_set_mnemonic_widget (GTK_LABEL (label), priv->hex_entry);
gtk_signal_connect (GTK_OBJECT (priv->hex_entry), "activate",
GTK_SIGNAL_FUNC (hex_changed), colorsel);
gtk_tooltips_set_tip (priv->tooltips,
priv->hex_entry,
_("You can enter an HTML-style hexadecimal color value, or simply a color name such as 'orange' in this entry."), NULL);
gtk_widget_set_usize (priv->hex_entry, 75, -1);
gtk_table_set_col_spacing (GTK_TABLE (table), 3, 15);
gtk_table_attach_defaults (GTK_TABLE (table), priv->hex_entry, 1, 5, 5, 6);
/* Set up the palette */
table = gtk_table_new (GTK_CUSTOM_PALETTE_HEIGHT, GTK_CUSTOM_PALETTE_WIDTH, TRUE);
gtk_table_set_row_spacings (GTK_TABLE (table), 1);
gtk_table_set_col_spacings (GTK_TABLE (table), 1);
for (i = 0; i < GTK_CUSTOM_PALETTE_WIDTH; i++)
{
for (j = 0; j < GTK_CUSTOM_PALETTE_HEIGHT; j++)
{
make_palette_frame (colorsel, table, i, j);
}
}
set_selected_palette (colorsel, 0, 0);
priv->palette_frame = gtk_frame_new (NULL);
label = gtk_label_new_with_mnemonic (_("_Palette"));
gtk_frame_set_label_widget (GTK_FRAME (priv->palette_frame), label);
gtk_label_set_mnemonic_widget (GTK_LABEL (label),
priv->custom_palette[0][0]);
gtk_box_pack_end (GTK_BOX (top_right_vbox), priv->palette_frame, FALSE, FALSE, 0);
vbox = gtk_vbox_new (FALSE, 4);
gtk_container_add (GTK_CONTAINER (priv->palette_frame), vbox);
gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, FALSE, 0);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 4);
gtk_widget_show_all (top_hbox);
/* Set default colors */
update_palette (colorsel);
priv->settings_connection =
g_signal_connect_data (G_OBJECT (gtk_settings_get_default ()),
"notify::gtk-color-palette",
G_CALLBACK (palette_change_notify_instance),
colorsel, NULL, 0);
/* hide unused stuff */
if (priv->has_opacity == FALSE)
{
gtk_widget_hide (priv->opacity_label);
gtk_widget_hide (priv->opacity_slider);
gtk_widget_hide (priv->opacity_entry);
}
if (priv->has_palette == FALSE)
{
gtk_widget_hide (priv->palette_frame);
}
}
static void
gtk_color_selection_destroy (GtkObject *object)
{
GtkColorSelection *cselection = GTK_COLOR_SELECTION (object);
ColorSelectionPrivate *priv = cselection->private_data;
if (priv->dropper_grab_widget)
{
gtk_widget_destroy (priv->dropper_grab_widget);
priv->dropper_grab_widget = NULL;
}
if (priv->tooltips)
{
gtk_object_destroy (GTK_OBJECT (priv->tooltips));
priv->tooltips = NULL;
}
GTK_OBJECT_CLASS (parent_class)->destroy (object);
}
static void
gtk_color_selection_finalize (GObject *object)
{
GtkColorSelection *cselection = GTK_COLOR_SELECTION (object);
if (cselection->private_data)
{
ColorSelectionPrivate *priv;
priv = cselection->private_data;
g_signal_handler_disconnect (gtk_settings_get_default (),
priv->settings_connection);
g_free (cselection->private_data);
cselection->private_data = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
/**
* gtk_color_selection_new:
*
* Creates a new GtkColorSelection.
*
* Return value: a new #GtkColorSelection
**/
GtkWidget *
gtk_color_selection_new (void)
{
GtkColorSelection *colorsel;
ColorSelectionPrivate *priv;
gdouble color[4];
color[0] = 1.0;
color[1] = 1.0;
color[2] = 1.0;
color[3] = 1.0;
colorsel = gtk_type_new (GTK_TYPE_COLOR_SELECTION);
priv = colorsel->private_data;
gtk_color_selection_set_color (colorsel, color);
gtk_color_selection_set_has_opacity_control (colorsel, TRUE);
/* We want to make sure that default_set is FALSE */
/* This way the user can still set it */
priv->default_set = FALSE;
priv->default_alpha_set = FALSE;
return GTK_WIDGET (colorsel);
}
void
gtk_color_selection_set_update_policy (GtkColorSelection *colorsel,
GtkUpdateType policy)
{
g_return_if_fail (GTK_IS_COLOR_SELECTION (colorsel));
/* */
g_warning (G_STRLOC ": This function is deprecated.");
}
/**
* gtk_color_selection_get_has_opacity_control:
* @colorsel: A GtkColorSelection.
*
* Determines whether the colorsel has an opacity control.
*
* Return value: TRUE if the @colorsel has an opacity control. FALSE if it does't.
**/
gboolean
gtk_color_selection_get_has_opacity_control (GtkColorSelection *colorsel)
{
ColorSelectionPrivate *priv;
g_return_val_if_fail (GTK_IS_COLOR_SELECTION (colorsel), FALSE);
priv = colorsel->private_data;
return priv->has_opacity;
}
/**
* gtk_color_selection_set_has_opacity_control:
* @colorsel: A GtkColorSelection.
* @has_opacity: TRUE if @colorsel can set the opacity, FALSE otherwise.
*
* Sets the @colorsel to use or not use opacity.
*
**/
void
gtk_color_selection_set_has_opacity_control (GtkColorSelection *colorsel,
gboolean has_opacity)
{
ColorSelectionPrivate *priv;
g_return_if_fail (GTK_IS_COLOR_SELECTION (colorsel));
priv = colorsel->private_data;
has_opacity = has_opacity != FALSE;
if (priv->has_opacity != has_opacity)
{
priv->has_opacity = has_opacity;
if (has_opacity)
{
gtk_widget_show (priv->opacity_slider);
gtk_widget_show (priv->opacity_label);
gtk_widget_show (priv->opacity_entry);
}
else
{
gtk_widget_hide (priv->opacity_slider);
gtk_widget_hide (priv->opacity_label);
gtk_widget_hide (priv->opacity_entry);
}
color_sample_draw_samples (colorsel);
g_object_notify (G_OBJECT (colorsel), "has_opacity_control");
}
}
/**
* gtk_color_selection_get_has_palette:
* @colorsel: A GtkColorSelection.
*
* Determines whether the color selector has a color palette.
*
* Return value: TRUE if the selector has a palette. FALSE if it hasn't.
**/
gboolean
gtk_color_selection_get_has_palette (GtkColorSelection *colorsel)
{
ColorSelectionPrivate *priv;
g_return_val_if_fail (GTK_IS_COLOR_SELECTION (colorsel), FALSE);
priv = colorsel->private_data;
return priv->has_palette;
}
/**
* gtk_color_selection_set_has_palette:
* @colorsel: A GtkColorSelection.
* @has_palette: TRUE if palette is to be visible, FALSE otherwise.
*
* Shows and hides the palette based upon the value of @has_palette.
*
**/
void
gtk_color_selection_set_has_palette (GtkColorSelection *colorsel,
gboolean has_palette)
{
ColorSelectionPrivate *priv;
g_return_if_fail (GTK_IS_COLOR_SELECTION (colorsel));
priv = colorsel->private_data;
has_palette = has_palette != FALSE;
if (priv->has_palette != has_palette)
{
priv->has_palette = has_palette;
if (has_palette)
gtk_widget_show (priv->palette_frame);
else
gtk_widget_hide (priv->palette_frame);
g_object_notify (G_OBJECT (colorsel), "has_palette");
}
}
/**
* gtk_color_selection_set_current_color:
* @colorsel: A GtkColorSelection.
* @color: A GdkColor to set the current color with.
*
* Sets the current color to be @color. The first time this is called, it will
* also set the original color to be @color too.
*
**/
void
gtk_color_selection_set_current_color (GtkColorSelection *colorsel,
GdkColor *color)
{
ColorSelectionPrivate *priv;
gint i;
gboolean previous_changed;
g_return_if_fail (GTK_IS_COLOR_SELECTION (colorsel));
priv = colorsel->private_data;
priv->changing = TRUE;
priv->color[COLORSEL_RED] = SCALE (color->red);
priv->color[COLORSEL_GREEN] = SCALE (color->green);
priv->color[COLORSEL_BLUE] = SCALE (color->blue);
gtk_rgb_to_hsv (priv->color[COLORSEL_RED],
priv->color[COLORSEL_GREEN],
priv->color[COLORSEL_BLUE],
&priv->color[COLORSEL_HUE],
&priv->color[COLORSEL_SATURATION],
&priv->color[COLORSEL_VALUE]);
if (priv->default_set == FALSE)
{
previous_changed = TRUE;
for (i = 0; i < COLORSEL_NUM_CHANNELS; i++)
priv->old_color[i] = priv->color[i];
}
update_color (colorsel);
priv->default_set = TRUE;
}
/**
* gtk_color_selection_set_current_alpha:
* @colorsel: A GtkColorSelection.
* @alpha: an integer between 0 and 65535
*
* Sets the current opacity to be @alpha. The first time this is called, it will
* also set the original opacity to be @alpha too.
*
**/
void
gtk_color_selection_set_current_alpha (GtkColorSelection *colorsel,
guint16 alpha)
{
ColorSelectionPrivate *priv;
gint i;
g_return_if_fail (GTK_IS_COLOR_SELECTION (colorsel));
priv = colorsel->private_data;
priv->changing = TRUE;
priv->color[COLORSEL_OPACITY] = SCALE (alpha);
if (priv->default_alpha_set == FALSE)
{
for (i = 0; i < COLORSEL_NUM_CHANNELS; i++)
priv->old_color[i] = priv->color[i];
}
update_color (colorsel);
priv->default_alpha_set = TRUE;
}
/**
* gtk_color_selection_set_color:
* @colorsel: A GtkColorSelection.
* @color: A array of doubles that specifies the color to set the current color with.
*
* Sets the current color to be @color. The first time this is called, it will
* also set the original color to be @color too.
*
* This function is deprecated, use gtk_color_selection_set_current_color() instead.
*
**/
void
gtk_color_selection_set_color (GtkColorSelection *colorsel,
gdouble *color)
{
ColorSelectionPrivate *priv;
gint i;
g_return_if_fail (GTK_IS_COLOR_SELECTION (colorsel));
priv = colorsel->private_data;
priv->changing = TRUE;
priv->color[COLORSEL_RED] = color[0];
priv->color[COLORSEL_GREEN] = color[1];
priv->color[COLORSEL_BLUE] = color[2];
priv->color[COLORSEL_OPACITY] = color[3];
gtk_rgb_to_hsv (priv->color[COLORSEL_RED],
priv->color[COLORSEL_GREEN],
priv->color[COLORSEL_BLUE],
&priv->color[COLORSEL_HUE],
&priv->color[COLORSEL_SATURATION],
&priv->color[COLORSEL_VALUE]);
if (priv->default_set == FALSE)
{
for (i = 0; i < COLORSEL_NUM_CHANNELS; i++)
priv->old_color[i] = priv->color[i];
}
update_color (colorsel);
priv->default_set = TRUE;
priv->default_alpha_set = TRUE;
}
/**
* gtk_color_selection_get_current_color:
* @colorsel: A GtkColorSelection.
* @color: A GdkColor to fill in with the current color.
*
* Sets @color to be the current color in the GtkColorSelection widget.
*
* This function is deprecated, use gtk_color_selection_get_current_color() instead.
**/
void
gtk_color_selection_get_current_color (GtkColorSelection *colorsel,
GdkColor *color)
{
ColorSelectionPrivate *priv;
g_return_if_fail (GTK_IS_COLOR_SELECTION (colorsel));
priv = colorsel->private_data;
color->red = UNSCALE (priv->color[COLORSEL_RED]);
color->green = UNSCALE (priv->color[COLORSEL_GREEN]);
color->blue = UNSCALE (priv->color[COLORSEL_BLUE]);
}
/**
* gtk_color_selection_get_current_alpha:
* @colorsel: A GtkColorSelection.
*
* Returns the current alpha value
*
* Return value: an integer between 0 and 65535
**/
guint16
gtk_color_selection_get_current_alpha (GtkColorSelection *colorsel)
{
ColorSelectionPrivate *priv;
g_return_val_if_fail (GTK_IS_COLOR_SELECTION (colorsel), 0);
priv = colorsel->private_data;
return priv->has_opacity ? UNSCALE (priv->color[COLORSEL_OPACITY]) : 65535;
}
/**
* gtk_color_selection_get_color:
* @colorsel: A GtkColorSelection.
* @color: A color to fill in with the current color.
*
* Sets @color to be the current color in the GtkColorSelection widget.
*
**/
void
gtk_color_selection_get_color (GtkColorSelection *colorsel,
gdouble *color)
{
ColorSelectionPrivate *priv;
g_return_if_fail (GTK_IS_COLOR_SELECTION (colorsel));
priv = colorsel->private_data;
color[0] = priv->color[COLORSEL_RED];
color[1] = priv->color[COLORSEL_GREEN];
color[2] = priv->color[COLORSEL_BLUE];
color[3] = priv->has_opacity ? priv->color[COLORSEL_OPACITY] : 65535;
}
/**
* gtk_color_selection_set_previous_color:
* @colorsel: A GtkColorSelection.
* @color: A color to set the previous color with.
*
* Sets the 'previous' color to be @color. This function should be called with
* some hesitations, as it might seem confusing to have that color change.
* Calling gtk_color_selection_set_current_color will also set this color the first
* time it is called.
*
**/
void
gtk_color_selection_set_previous_color (GtkColorSelection *colorsel,
GdkColor *color)
{
ColorSelectionPrivate *priv;
g_return_if_fail (GTK_IS_COLOR_SELECTION (colorsel));
priv = colorsel->private_data;
priv->changing = TRUE;
priv->old_color[COLORSEL_RED] = SCALE (color->red);
priv->old_color[COLORSEL_GREEN] = SCALE (color->green);
priv->old_color[COLORSEL_BLUE] = SCALE (color->blue);
gtk_rgb_to_hsv (priv->old_color[COLORSEL_RED],
priv->old_color[COLORSEL_GREEN],
priv->old_color[COLORSEL_BLUE],
&priv->old_color[COLORSEL_HUE],
&priv->old_color[COLORSEL_SATURATION],
&priv->old_color[COLORSEL_VALUE]);
color_sample_draw_samples (colorsel);
priv->default_set = TRUE;
}
/**
* gtk_color_selection_set_previous_alpha:
* @colorsel: A GtkColorSelection.
* @alpha: an integer between 0 and 65535
*
* Sets the 'previous' alpha to be @alpha. This function should be called with
* some hesitations, as it might seem confusing to have that color change.
*
**/
void
gtk_color_selection_set_previous_alpha (GtkColorSelection *colorsel,
guint16 alpha)
{
ColorSelectionPrivate *priv;
g_return_if_fail (GTK_IS_COLOR_SELECTION (colorsel));
priv = colorsel->private_data;
priv->changing = TRUE;
priv->old_color[COLORSEL_OPACITY] = SCALE (alpha);
color_sample_draw_samples (colorsel);
priv->default_alpha_set = TRUE;
}
/**
* gtk_color_selection_get_previous_color:
* @colorsel: A GtkColorSelection.
* @color: A GdkColor to fill in with the original color value.
*
* Fills @color in with the original color value.
*
**/
void
gtk_color_selection_get_previous_color (GtkColorSelection *colorsel,
GdkColor *color)
{
ColorSelectionPrivate *priv;
g_return_if_fail (GTK_IS_COLOR_SELECTION (colorsel));
priv = colorsel->private_data;
color->red = UNSCALE (priv->old_color[COLORSEL_RED]);
color->green = UNSCALE (priv->old_color[COLORSEL_GREEN]);
color->blue = UNSCALE (priv->old_color[COLORSEL_BLUE]);
}
/**
* gtk_color_selection_get_previous_alpha:
* @colorsel: A GtkColorSelection.
*
* Returns the previous alpha value
*
* Return value: an integer between 0 and 65535
**/
guint16
gtk_color_selection_get_previous_alpha (GtkColorSelection *colorsel)
{
ColorSelectionPrivate *priv;
g_return_val_if_fail (GTK_IS_COLOR_SELECTION (colorsel), 0);
priv = colorsel->private_data;
return priv->has_opacity ? UNSCALE (priv->old_color[COLORSEL_OPACITY]) : 65535;
}
/**
* gtk_color_selection_set_palette_color:
* @colorsel: A GtkColorSelection.
* @index: The color index of the palette.
* @color: A GdkColor to set the palette with.
*
* Set the palette located at at @index to have @color set as its color.
*
**/
static void
gtk_color_selection_set_palette_color (GtkColorSelection *colorsel,
gint index,
GdkColor *color)
{
ColorSelectionPrivate *priv;
gint x, y;
gdouble col[3];
g_return_if_fail (GTK_IS_COLOR_SELECTION (colorsel));
g_return_if_fail (index >= 0 && index < GTK_CUSTOM_PALETTE_WIDTH*GTK_CUSTOM_PALETTE_HEIGHT);
x = index % GTK_CUSTOM_PALETTE_WIDTH;
y = index / GTK_CUSTOM_PALETTE_WIDTH;
priv = colorsel->private_data;
col[0] = SCALE (color->red);
col[1] = SCALE (color->green);
col[2] = SCALE (color->blue);
palette_set_color (priv->custom_palette[x][y], colorsel, col);
}
/**
* gtk_color_selection_get_palette_color:
* @colorsel: A GtkColorSelection.
* @index: The color index of the palette.
* @color: A color to fill in with the color value.
*
* Set @color to have the color found in the palette at @index. If
* the palette is unset, it will leave the color unset.
*
* Return value: TRUE if the palette located at @index has a color set. FALSE
* if it doesn't.
**/
static gboolean
gtk_color_selection_get_palette_color (GtkColorSelection *colorsel,
gint index,
GdkColor *color)
{
ColorSelectionPrivate *priv;
gint x, y;
gdouble col[4];
g_return_val_if_fail (GTK_IS_COLOR_SELECTION (colorsel), FALSE);
g_return_val_if_fail (index >= 0 && index < GTK_CUSTOM_PALETTE_WIDTH*GTK_CUSTOM_PALETTE_HEIGHT, FALSE);
priv = colorsel->private_data;
x = index % GTK_CUSTOM_PALETTE_WIDTH;
y = index / GTK_CUSTOM_PALETTE_WIDTH;
if (GPOINTER_TO_INT (gtk_object_get_data (GTK_OBJECT (priv->custom_palette[x][y]), "color_set")) == 0)
return FALSE;
palette_get_color (priv->custom_palette[x][y], col);
color->red = UNSCALE (col[0]);
color->green = UNSCALE (col[1]);
color->blue = UNSCALE (col[2]);
return TRUE;
}
/**
* gtk_color_selection_unset_palette_color:
* @colorsel: A GtkColorSelection.
* @index: The color index in the palette.
*
* Change the palette located @index to have no color set.
*
**/
static void
gtk_color_selection_unset_palette_color (GtkColorSelection *colorsel,
gint index)
{
ColorSelectionPrivate *priv;
gint x, y;
g_return_if_fail (GTK_IS_COLOR_SELECTION (colorsel));
g_return_if_fail (index >= 0 && index < GTK_CUSTOM_PALETTE_WIDTH*GTK_CUSTOM_PALETTE_HEIGHT);
x = index % GTK_CUSTOM_PALETTE_WIDTH;
y = index / GTK_CUSTOM_PALETTE_WIDTH;
priv = colorsel->private_data;
palette_unset_color (priv->custom_palette[x][y]);
}
/**
* gtk_color_selection_get_current_alpha:
* @colorsel: A GtkColorSelection.
*
* Returns the maximum number of palette colors.
*
* Return value: the maximum number of palette indexes
**/
static gint
gtk_color_selection_get_palette_size (GtkColorSelection *colorsel)
{
return GTK_CUSTOM_PALETTE_WIDTH * GTK_CUSTOM_PALETTE_HEIGHT;
}
/**
* gtk_color_selection_is_adjusting:
* @colorsel: A GtkColorSelection.
*
* Gets the current state of the @colorsel.
*
* Return value: TRUE if the user is currently dragging a color around, and FALSE
* if the selection has stopped.
**/
gboolean
gtk_color_selection_is_adjusting (GtkColorSelection *colorsel)
{
ColorSelectionPrivate *priv;
g_return_val_if_fail (GTK_IS_COLOR_SELECTION (colorsel), FALSE);
priv = colorsel->private_data;
return (gtk_hsv_is_adjusting (GTK_HSV (priv->triangle_colorsel)));
}
static void
gtk_color_selection_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkColorSelection *colorsel = GTK_COLOR_SELECTION (object);
switch (prop_id)
{
case PROP_HAS_OPACITY_CONTROL:
gtk_color_selection_set_has_opacity_control (colorsel,
g_value_get_boolean (value));
break;
case PROP_HAS_PALETTE:
gtk_color_selection_set_has_palette (colorsel,
g_value_get_boolean (value));
break;
case PROP_CURRENT_COLOR:
gtk_color_selection_set_current_color (colorsel, g_value_get_boxed (value));
break;
case PROP_CURRENT_ALPHA:
gtk_color_selection_set_current_alpha (colorsel, g_value_get_uint (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_color_selection_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkColorSelection *colorsel = GTK_COLOR_SELECTION (object);
GdkColor color;
switch (prop_id)
{
case PROP_HAS_OPACITY_CONTROL:
g_value_set_boolean (value, gtk_color_selection_get_has_opacity_control (colorsel));
break;
case PROP_HAS_PALETTE:
g_value_set_boolean (value, gtk_color_selection_get_has_palette (colorsel));
break;
case PROP_CURRENT_COLOR:
gtk_color_selection_get_current_color (colorsel, &color);
g_value_set_boxed (value, &color);
break;
case PROP_CURRENT_ALPHA:
g_value_set_uint (value, gtk_color_selection_get_current_alpha (colorsel));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/**
* gtk_color_selection_palette_from_string:
* @str: a string encoding a color palette
* @colors: return location for allocated array of GdkColor
* @n_colors: return location for length of array
*
* Parses a color palette string; the string is a colon-separated
* list of color names readable by gdk_color_parse().
*
* Return value: %TRUE if a palette was successfully parsed
**/
gboolean
gtk_color_selection_palette_from_string (const gchar *str,
GdkColor **colors,
gint *n_colors)
{
GdkColor *retval;
gint count;
gchar *p;
gchar *start;
gchar *copy;
count = 0;
retval = NULL;
copy = g_strdup (str);
start = copy;
p = copy;
while (TRUE)
{
if (*p == ':' || *p == '\0')
{
gboolean done = TRUE;
if (start == p)
{
goto failed; /* empty entry */
}
if (*p)
{
*p = '\0';
done = FALSE;
}
retval = g_renew (GdkColor, retval, count + 1);
if (!gdk_color_parse (start, retval + count))
{
goto failed;
}
++count;
if (done)
break;
else
start = p + 1;
}
++p;
}
g_free (copy);
if (colors)
*colors = retval;
else
g_free (retval);
if (n_colors)
*n_colors = count;
return TRUE;
failed:
g_free (copy);
g_free (retval);
if (colors)
*colors = NULL;
if (n_colors)
*n_colors = 0;
return FALSE;
}
/**
* gtk_color_selection_palette_to_string:
* @colors: an array of colors
* @n_colors: length of the array
*
* Encodes a palette as a string, useful for persistent storage.
*
* Return value: allocated string encoding the palette
**/
gchar*
gtk_color_selection_palette_to_string (const GdkColor *colors,
gint n_colors)
{
gint i;
gchar **strs = NULL;
gchar *retval;
if (n_colors == 0)
return g_strdup ("");
strs = g_new0 (gchar*, n_colors + 1);
i = 0;
while (i < n_colors)
{
gchar *ptr;
strs[i] =
g_strdup_printf ("#%2X%2X%2X",
colors[i].red / 256,
colors[i].green / 256,
colors[i].blue / 256);
for (ptr = strs[i]; *ptr; ptr++)
if (*ptr == ' ')
*ptr = '0';
++i;
}
retval = g_strjoinv (":", strs);
g_strfreev (strs);
return retval;
}
/**
* gtk_color_selection_set_change_palette_hook:
* @func: a function to call when the custom palette needs saving
*
* Installs a global function to be called whenever the user tries to
* modify the palette in a color selection. This function should save
* the new palette contents, and update the GtkSettings property
* "gtk-color-palette" so all GtkColorSelection widgets will be modified.
*
* Return value: the previous change palette hook (that was replaced)
**/
GtkColorSelectionChangePaletteFunc
gtk_color_selection_set_change_palette_hook (GtkColorSelectionChangePaletteFunc func)
{
GtkColorSelectionChangePaletteFunc old;
old = change_palette_hook;
change_palette_hook = func;
return old;
}
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