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gimp/libgimpwidgets/gimpwidgets.c

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/* LIBGIMP - The GIMP Library
* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
*
* gimpwidgets.c
* Copyright (C) 2000 Michael Natterer <mitch@gimp.org>
*
* 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <string.h>
#include <gtk/gtk.h>
#include "libgimpcolor/gimpcolor.h"
#include "libgimpmath/gimpmath.h"
#include "libgimpbase/gimpbase.h"
#include "gimpwidgetstypes.h"
#include "gimpchainbutton.h"
#include "gimppixmap.h"
#include "gimpsizeentry.h"
#include "gimpunitmenu.h"
#include "gimpwidgets.h"
#include "gimpwidgets-private.h"
#include "libgimp/libgimp-intl.h"
/*
* Widget Constructors
*/
/**
* gimp_option_menu_new:
* @menu_only: %TRUE if the function should return a #GtkMenu only.
* @...: A %NULL-terminated @va_list describing the menu items.
*
* Convenience function to create a #GtkOptionMenu or a #GtkMenu.
*
* Returns: A #GtkOptionMenu or a #GtkMenu (depending on @menu_only).
**/
GtkWidget *
gimp_option_menu_new (gboolean menu_only,
/* specify menu items as va_list:
* const gchar *label,
* GCallback callback,
* gpointer callback_data,
* gpointer item_data,
* GtkWidget **widget_ptr,
* gboolean active
*/
...)
{
GtkWidget *menu;
GtkWidget *menuitem;
/* menu item variables */
const gchar *label;
GCallback callback;
gpointer callback_data;
gpointer item_data;
GtkWidget **widget_ptr;
gboolean active;
va_list args;
gint i;
gint initial_index;
menu = gtk_menu_new ();
/* create the menu items */
initial_index = 0;
va_start (args, menu_only);
label = va_arg (args, const gchar *);
for (i = 0; label; i++)
{
callback = va_arg (args, GCallback);
callback_data = va_arg (args, gpointer);
item_data = va_arg (args, gpointer);
widget_ptr = va_arg (args, GtkWidget **);
active = va_arg (args, gboolean);
if (strcmp (label, "---"))
{
menuitem = gtk_menu_item_new_with_label (label);
g_signal_connect (menuitem, "activate",
callback,
callback_data);
if (item_data)
{
g_object_set_data (G_OBJECT (menuitem), "gimp-item-data",
item_data);
/* backward compat */
g_object_set_data (G_OBJECT (menuitem), "user_data", item_data);
}
}
else
{
menuitem = gtk_menu_item_new ();
gtk_widget_set_sensitive (menuitem, FALSE);
}
gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
if (widget_ptr)
*widget_ptr = menuitem;
gtk_widget_show (menuitem);
/* remember the initial menu item */
if (active)
initial_index = i;
label = va_arg (args, const gchar *);
}
va_end (args);
if (! menu_only)
{
GtkWidget *optionmenu;
optionmenu = gtk_option_menu_new ();
gtk_option_menu_set_menu (GTK_OPTION_MENU (optionmenu), menu);
/* select the initial menu item */
gtk_option_menu_set_history (GTK_OPTION_MENU (optionmenu), initial_index);
return optionmenu;
}
return menu;
}
/**
* gimp_option_menu_new2:
* @menu_only: %TRUE if the function should return a #GtkMenu only.
* @menu_item_callback: The callback each menu item's "activate" signal will
* be connected with.
* @menu_item_callback_data:
* The data which will be passed to g_signal_connect().
* @initial: The @item_data of the initially selected menu item.
* @...: A %NULL-terminated @va_list describing the menu items.
*
* Convenience function to create a #GtkOptionMenu or a #GtkMenu.
*
* Returns: A #GtkOptionMenu or a #GtkMenu (depending on @menu_only).
**/
GtkWidget *
gimp_option_menu_new2 (gboolean menu_only,
GCallback menu_item_callback,
gpointer callback_data,
gpointer initial, /* item_data */
/* specify menu items as va_list:
* const gchar *label,
* gpointer item_data,
* GtkWidget **widget_ptr,
*/
...)
{
GtkWidget *menu;
GtkWidget *menuitem;
/* menu item variables */
const gchar *label;
gpointer item_data;
GtkWidget **widget_ptr;
va_list args;
gint i;
gint initial_index;
menu = gtk_menu_new ();
/* create the menu items */
initial_index = 0;
va_start (args, initial);
label = va_arg (args, const gchar *);
for (i = 0; label; i++)
{
item_data = va_arg (args, gpointer);
widget_ptr = va_arg (args, GtkWidget **);
if (strcmp (label, "---"))
{
menuitem = gtk_menu_item_new_with_label (label);
g_signal_connect (menuitem, "activate",
menu_item_callback,
callback_data);
if (item_data)
{
g_object_set_data (G_OBJECT (menuitem), "gimp-item-data",
item_data);
/* backward compat */
g_object_set_data (G_OBJECT (menuitem), "user_data", item_data);
}
}
else
{
menuitem = gtk_menu_item_new ();
gtk_widget_set_sensitive (menuitem, FALSE);
}
gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
if (widget_ptr)
*widget_ptr = menuitem;
gtk_widget_show (menuitem);
/* remember the initial menu item */
if (item_data == initial)
initial_index = i;
label = va_arg (args, const gchar *);
}
va_end (args);
if (! menu_only)
{
GtkWidget *optionmenu;
optionmenu = gtk_option_menu_new ();
gtk_option_menu_set_menu (GTK_OPTION_MENU (optionmenu), menu);
/* select the initial menu item */
gtk_option_menu_set_history (GTK_OPTION_MENU (optionmenu), initial_index);
return optionmenu;
}
return menu;
}
/**
* gimp_option_menu_set_history:
* @option_menu: A #GtkOptionMenu as returned by gimp_option_menu_new() or
* gimp_option_menu_new2().
* @item_data: The @item_data of the menu item you want to select.
*
* Iterates over all entries in a #GtkOptionMenu and selects the one with the
* matching @item_data. Probably only makes sense to use with a #GtkOptionMenu
* that was created using gimp_option_menu_new() or gimp_option_menu_new2().
**/
void
gimp_option_menu_set_history (GtkOptionMenu *option_menu,
gpointer item_data)
{
GtkWidget *menu_item;
GList *list;
gint history = 0;
g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
for (list = GTK_MENU_SHELL (option_menu->menu)->children;
list;
list = g_list_next (list))
{
menu_item = GTK_WIDGET (list->data);
if (GTK_IS_LABEL (GTK_BIN (menu_item)->child) &&
g_object_get_data (G_OBJECT (menu_item),
"gimp-item-data") == item_data)
{
break;
}
history++;
}
if (list)
gtk_option_menu_set_history (option_menu, history);
}
/**
* gimp_option_menu_set_sensitive:
* @option_menu: a #GtkOptionMenu as returned by gimp_option_menu_new() or
* gimp_option_menu_new2().
* @callback: a function called for each item in the menu to determine the
* the sensitivity state.
* @callback_data: data to pass to the @callback function.
*
* Calls the given @callback for each item in the menu and passes it the
* item_data and the @callback_data. The menu item's sensitivity is set
* according to the return value of this function.
**/
void
gimp_option_menu_set_sensitive (GtkOptionMenu *option_menu,
GimpOptionMenuSensitivityCallback callback,
gpointer callback_data)
{
GtkWidget *menu_item;
GList *list;
gpointer item_data;
gboolean sensitive;
g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
g_return_if_fail (callback != NULL);
for (list = GTK_MENU_SHELL (option_menu->menu)->children;
list;
list = g_list_next (list))
{
menu_item = GTK_WIDGET (list->data);
if (GTK_IS_LABEL (GTK_BIN (menu_item)->child))
{
item_data = g_object_get_data (G_OBJECT (menu_item),
"gimp-item-data");
sensitive = callback (item_data, callback_data);
gtk_widget_set_sensitive (menu_item, sensitive);
}
}
}
/**
* gimp_radio_group_new:
* @in_frame: %TRUE if you want a #GtkFrame around the radio button group.
* @frame_title: The title of the Frame or %NULL if you don't want a title.
* @...: A %NULL-terminated @va_list describing the radio buttons.
*
* Convenience function to create a group of radio buttons embedded into
* a #GtkFrame or #GtkVbox.
*
* Returns: A #GtkFrame or #GtkVbox (depending on @in_frame).
**/
GtkWidget *
gimp_radio_group_new (gboolean in_frame,
const gchar *frame_title,
/* specify radio buttons as va_list:
* const gchar *label,
* GCallback callback,
* gpointer callback_data,
* gpointer item_data,
* GtkWidget **widget_ptr,
* gboolean active,
*/
...)
{
GtkWidget *vbox;
GtkWidget *button;
GSList *group;
/* radio button variables */
const gchar *label;
GCallback callback;
gpointer callback_data;
gpointer item_data;
GtkWidget **widget_ptr;
gboolean active;
va_list args;
vbox = gtk_vbox_new (FALSE, 1);
group = NULL;
/* create the radio buttons */
va_start (args, frame_title);
label = va_arg (args, const gchar *);
while (label)
{
callback = va_arg (args, GCallback);
callback_data = va_arg (args, gpointer);
item_data = va_arg (args, gpointer);
widget_ptr = va_arg (args, GtkWidget **);
active = va_arg (args, gboolean);
if (label != (gpointer) 1)
button = gtk_radio_button_new_with_label (group, label);
else
button = gtk_radio_button_new (group);
group = gtk_radio_button_get_group (GTK_RADIO_BUTTON (button));
gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);
if (item_data)
{
g_object_set_data (G_OBJECT (button), "gimp-item-data", item_data);
/* backward compatibility */
g_object_set_data (G_OBJECT (button), "user_data", item_data);
}
if (widget_ptr)
*widget_ptr = button;
if (active)
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), TRUE);
g_signal_connect (button, "toggled",
callback,
callback_data);
gtk_widget_show (button);
label = va_arg (args, const gchar *);
}
va_end (args);
if (in_frame)
{
GtkWidget *frame;
gtk_container_set_border_width (GTK_CONTAINER (vbox), 2);
frame = gtk_frame_new (frame_title);
gtk_container_add (GTK_CONTAINER (frame), vbox);
gtk_widget_show (vbox);
return frame;
}
return vbox;
}
/**
* gimp_radio_group_new2:
* @in_frame: %TRUE if you want a #GtkFrame around the
* radio button group.
* @frame_title: The title of the Frame or %NULL if you don't want
* a title.
* @radio_button_callback: The callback each button's "toggled" signal will
* be connected with.
* @radio_button_callback_data:
* The data which will be passed to g_signal_connect().
* @initial: The @item_data of the initially pressed radio button.
* @...: A %NULL-terminated @va_list describing
* the radio buttons.
*
* Convenience function to create a group of radio buttons embedded into
* a #GtkFrame or #GtkVbox.
*
* Returns: A #GtkFrame or #GtkVbox (depending on @in_frame).
**/
GtkWidget *
gimp_radio_group_new2 (gboolean in_frame,
const gchar *frame_title,
GCallback radio_button_callback,
gpointer callback_data,
gpointer initial, /* item_data */
/* specify radio buttons as va_list:
* const gchar *label,
* gpointer item_data,
* GtkWidget **widget_ptr,
*/
...)
{
GtkWidget *vbox;
GtkWidget *button;
GSList *group;
/* radio button variables */
const gchar *label;
gpointer item_data;
GtkWidget **widget_ptr;
va_list args;
vbox = gtk_vbox_new (FALSE, 1);
group = NULL;
/* create the radio buttons */
va_start (args, initial);
label = va_arg (args, const gchar *);
while (label)
{
item_data = va_arg (args, gpointer);
widget_ptr = va_arg (args, GtkWidget **);
if (label != (gpointer) 1)
button = gtk_radio_button_new_with_mnemonic (group, label);
else
button = gtk_radio_button_new (group);
group = gtk_radio_button_get_group (GTK_RADIO_BUTTON (button));
gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);
if (item_data)
{
g_object_set_data (G_OBJECT (button), "gimp-item-data", item_data);
/* backward compatibility */
g_object_set_data (G_OBJECT (button), "user_data", item_data);
}
if (widget_ptr)
*widget_ptr = button;
if (initial == item_data)
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), TRUE);
g_signal_connect (button, "toggled",
radio_button_callback,
callback_data);
gtk_widget_show (button);
label = va_arg (args, const gchar *);
}
va_end (args);
if (in_frame)
{
GtkWidget *frame;
gtk_container_set_border_width (GTK_CONTAINER (vbox), 2);
frame = gtk_frame_new (frame_title);
gtk_container_add (GTK_CONTAINER (frame), vbox);
gtk_widget_show (vbox);
return frame;
}
return vbox;
}
/**
* gimp_radio_group_set_active:
* @radio_button: Pointer to a #GtkRadioButton.
* @item_data: The @item_data of the radio button you want to select.
*
* Calls gtk_toggle_button_set_active() with the radio button that was created
* with a matching @item_data.
**/
void
gimp_radio_group_set_active (GtkRadioButton *radio_button,
gpointer item_data)
{
GtkWidget *button;
GSList *group;
g_return_if_fail (GTK_IS_RADIO_BUTTON (radio_button));
for (group = gtk_radio_button_get_group (radio_button);
group;
group = g_slist_next (group))
{
button = GTK_WIDGET (group->data);
if (g_object_get_data (G_OBJECT (button), "gimp-item-data") == item_data)
{
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), TRUE);
return;
}
}
}
/**
* gimp_spin_button_new:
* @adjustment: Returns the spinbutton's #GtkAdjustment.
* @value: The initial value of the spinbutton.
* @lower: The lower boundary.
* @upper: The uppper boundary.
* @step_increment: The spinbutton's step increment.
* @page_increment: The spinbutton's page increment (mouse button 2).
* @page_size: The spinbutton's page size.
* @climb_rate: The spinbutton's climb rate.
* @digits: The spinbutton's number of decimal digits.
*
* This function is a shortcut for gtk_adjustment_new() and a subsequent
* gtk_spin_button_new() and does some more initialisation stuff like
* setting a standard minimum horizontal size.
*
* Returns: A #GtkSpinbutton and it's #GtkAdjustment.
**/
GtkWidget *
gimp_spin_button_new (GtkObject **adjustment, /* return value */
gdouble value,
gdouble lower,
gdouble upper,
gdouble step_increment,
gdouble page_increment,
gdouble page_size,
gdouble climb_rate,
guint digits)
{
GtkWidget *spinbutton;
*adjustment = gtk_adjustment_new (value, lower, upper,
step_increment, page_increment, page_size);
spinbutton = gtk_spin_button_new (GTK_ADJUSTMENT (*adjustment),
climb_rate, digits);
gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (spinbutton), TRUE);
return spinbutton;
}
static void
gimp_scale_entry_unconstrained_adjustment_callback (GtkAdjustment *adjustment,
GtkAdjustment *other_adj)
{
g_signal_handlers_block_by_func (other_adj,
gimp_scale_entry_unconstrained_adjustment_callback,
adjustment);
gtk_adjustment_set_value (other_adj, adjustment->value);
g_signal_handlers_unblock_by_func (other_adj,
gimp_scale_entry_unconstrained_adjustment_callback,
adjustment);
}
static GtkObject *
gimp_scale_entry_new_internal (gboolean color_scale,
GtkTable *table,
gint column,
gint row,
const gchar *text,
gint scale_width,
gint spinbutton_width,
gdouble value,
gdouble lower,
gdouble upper,
gdouble step_increment,
gdouble page_increment,
guint digits,
gboolean constrain,
gdouble unconstrained_lower,
gdouble unconstrained_upper,
const gchar *tooltip,
const gchar *help_id)
{
GtkWidget *label;
GtkWidget *scale;
GtkWidget *spinbutton;
GtkObject *adjustment;
GtkObject *return_adj;
label = gtk_label_new_with_mnemonic (text);
gtk_misc_set_alignment (GTK_MISC (label), 1.0, 0.5);
gtk_table_attach (GTK_TABLE (table), label,
column, column + 1, row, row + 1,
GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (label);
if (! constrain &&
unconstrained_lower <= lower &&
unconstrained_upper >= upper)
{
GtkObject *constrained_adj;
constrained_adj = gtk_adjustment_new (value, lower, upper,
step_increment, page_increment,
0.0);
spinbutton = gimp_spin_button_new (&adjustment, value,
unconstrained_lower,
unconstrained_upper,
step_increment, page_increment, 0.0,
1.0, digits);
g_signal_connect
(G_OBJECT (constrained_adj), "value_changed",
G_CALLBACK (gimp_scale_entry_unconstrained_adjustment_callback),
adjustment);
g_signal_connect
(G_OBJECT (adjustment), "value_changed",
G_CALLBACK (gimp_scale_entry_unconstrained_adjustment_callback),
constrained_adj);
return_adj = adjustment;
adjustment = constrained_adj;
}
else
{
spinbutton = gimp_spin_button_new (&adjustment, value, lower, upper,
step_increment, page_increment, 0.0,
1.0, digits);
return_adj = adjustment;
}
gtk_label_set_mnemonic_widget (GTK_LABEL (label), spinbutton);
if (spinbutton_width > 0)
{
if (spinbutton_width < 17)
gtk_entry_set_width_chars (GTK_ENTRY (spinbutton), spinbutton_width);
else
gtk_widget_set_size_request (spinbutton, spinbutton_width, -1);
}
if (color_scale)
{
scale = gimp_color_scale_new (GTK_ORIENTATION_HORIZONTAL,
GIMP_COLOR_SELECTOR_VALUE);
gtk_range_set_adjustment (GTK_RANGE (scale),
GTK_ADJUSTMENT (adjustment));
}
else
{
scale = gtk_hscale_new (GTK_ADJUSTMENT (adjustment));
}
if (scale_width > 0)
gtk_widget_set_size_request (scale, scale_width, -1);
gtk_scale_set_digits (GTK_SCALE (scale), digits);
gtk_scale_set_draw_value (GTK_SCALE (scale), FALSE);
gtk_table_attach (GTK_TABLE (table), scale,
column + 1, column + 2, row, row + 1,
GTK_FILL | GTK_EXPAND, GTK_FILL, 0, 0);
gtk_widget_show (scale);
gtk_table_attach (GTK_TABLE (table), spinbutton,
column + 2, column + 3, row, row + 1,
GTK_SHRINK, GTK_SHRINK, 0, 0);
gtk_widget_show (spinbutton);
if (tooltip || help_id)
{
gimp_help_set_help_data (scale, tooltip, help_id);
gimp_help_set_help_data (spinbutton, tooltip, help_id);
}
g_object_set_data (G_OBJECT (return_adj), "label", label);
g_object_set_data (G_OBJECT (return_adj), "scale", scale);
g_object_set_data (G_OBJECT (return_adj), "spinbutton", spinbutton);
return return_adj;
}
/**
* gimp_scale_entry_new:
* @table: The #GtkTable the widgets will be attached to.
* @column: The column to start with.
* @row: The row to attach the widgets.
* @text: The text for the #GtkLabel which will appear
* left of the #GtkHScale.
* @scale_width: The minimum horizontal size of the #GtkHScale.
* @spinbutton_width: The minimum horizontal size of the #GtkSpinButton.
* @value: The initial value.
* @lower: The lower boundary.
* @upper: The upper boundary.
* @step_increment: The step increment.
* @page_increment: The page increment.
* @digits: The number of decimal digits.
* @constrain: %TRUE if the range of possible values of the
* #GtkSpinButton should be the same as of the #GtkHScale.
* @unconstrained_lower: The spinbutton's lower boundary
* if @constrain == %FALSE.
* @unconstrained_upper: The spinbutton's upper boundary
* if @constrain == %FALSE.
* @tooltip: A tooltip message for the scale and the spinbutton.
* @help_id: The widgets' help_id (see gimp_help_set_help_data()).
*
* This function creates a #GtkLabel, a #GtkHScale and a #GtkSpinButton and
* attaches them to a 3-column #GtkTable.
*
* Returns: The #GtkSpinButton's #GtkAdjustment.
**/
GtkObject *
gimp_scale_entry_new (GtkTable *table,
gint column,
gint row,
const gchar *text,
gint scale_width,
gint spinbutton_width,
gdouble value,
gdouble lower,
gdouble upper,
gdouble step_increment,
gdouble page_increment,
guint digits,
gboolean constrain,
gdouble unconstrained_lower,
gdouble unconstrained_upper,
const gchar *tooltip,
const gchar *help_id)
{
return gimp_scale_entry_new_internal (FALSE,
table, column, row,
text, scale_width, spinbutton_width,
value, lower, upper,
step_increment, page_increment,
digits,
constrain,
unconstrained_lower,
unconstrained_upper,
tooltip, help_id);
}
/**
* gimp_color_scale_entry_new:
* @table: The #GtkTable the widgets will be attached to.
* @column: The column to start with.
* @row: The row to attach the widgets.
* @text: The text for the #GtkLabel which will appear
* left of the #GtkHScale.
* @scale_width: The minimum horizontal size of the #GtkHScale.
* @spinbutton_width: The minimum horizontal size of the #GtkSpinButton.
* @value: The initial value.
* @lower: The lower boundary.
* @upper: The upper boundary.
* @step_increment: The step increment.
* @page_increment: The page increment.
* @digits: The number of decimal digits.
* @tooltip: A tooltip message for the scale and the spinbutton.
* @help_id: The widgets' help_id (see gimp_help_set_help_data()).
*
* This function creates a #GtkLabel, a #GimpColorScale and a
* #GtkSpinButton and attaches them to a 3-column #GtkTable.
*
* Returns: The #GtkSpinButton's #GtkAdjustment.
**/
GtkObject *
gimp_color_scale_entry_new (GtkTable *table,
gint column,
gint row,
const gchar *text,
gint scale_width,
gint spinbutton_width,
gdouble value,
gdouble lower,
gdouble upper,
gdouble step_increment,
gdouble page_increment,
guint digits,
const gchar *tooltip,
const gchar *help_id)
{
return gimp_scale_entry_new_internal (TRUE,
table, column, row,
text, scale_width, spinbutton_width,
value, lower, upper,
step_increment, page_increment,
digits,
TRUE, 0.0, 0.0,
tooltip, help_id);
}
/**
* gimp_scale_entry_set_sensitive:
* @adjustment: a #GtkAdjustment returned by gimp_scale_entry_new()
* @sensitive: a boolean value with the same semantics as the @sensitive
* parameter of gtk_widget_set_sensitive()
*
* Sets the sensitivity of the scale_entry's #GtkLabel, #GtkHScale and
* #GtkSpinbutton.
**/
void
gimp_scale_entry_set_sensitive (GtkObject *adjustment,
gboolean sensitive)
{
GtkWidget *widget;
g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
widget = GIMP_SCALE_ENTRY_LABEL (adjustment);
if (widget)
gtk_widget_set_sensitive (widget, sensitive);
widget = GIMP_SCALE_ENTRY_SCALE (adjustment);
if (widget)
gtk_widget_set_sensitive (widget, sensitive);
widget = GIMP_SCALE_ENTRY_SPINBUTTON (adjustment);
if (widget)
gtk_widget_set_sensitive (widget, sensitive);
}
static void
gimp_random_seed_update (GtkWidget *widget,
gpointer data)
{
GtkWidget *w = data;
gtk_spin_button_set_value (GTK_SPIN_BUTTON (w),
(guint) g_random_int ());
}
/**
* gimp_random_seed_new:
* @seed: A pointer to the variable which stores the random seed.
*
* Creates a widget that allows the user to control how the random number
* generator is initialized.
*
* Returns: A #GtkHBox containing a #GtkSpinButton for the seed and
* a #GtkButton for setting a random seed.
**/
GtkWidget *
gimp_random_seed_new (guint *seed)
{
GtkWidget *hbox;
GtkWidget *spinbutton;
GtkObject *adj;
GtkWidget *button;
hbox = gtk_hbox_new (FALSE, 4);
spinbutton = gimp_spin_button_new (&adj, *seed,
0, (guint32) -1 , 1, 10, 0, 1, 0);
gtk_box_pack_start (GTK_BOX (hbox), spinbutton, FALSE, FALSE, 0);
g_signal_connect (adj, "value_changed",
G_CALLBACK (gimp_uint_adjustment_update),
seed);
gtk_widget_show (spinbutton);
gimp_help_set_help_data (spinbutton,
_("Use this value for random number generator "
"seed - this allows you to repeat a "
"given \"random\" operation"), NULL);
button = gtk_button_new_with_mnemonic (_("_Randomize"));
gtk_misc_set_padding (GTK_MISC (GTK_BIN (button)->child), 2, 0);
/* Send spinbutton as data so that we can change the value in
* gimp_random_seed_update() */
g_signal_connect (button, "clicked",
G_CALLBACK (gimp_random_seed_update),
spinbutton);
gtk_box_pack_end (GTK_BOX (hbox), button, FALSE, FALSE, 0);
gtk_widget_show (button);
gimp_help_set_help_data (button,
_("Seed random number generator with a generated random number"),
NULL);
g_object_set_data (G_OBJECT (hbox), "spinbutton", spinbutton);
g_object_set_data (G_OBJECT (hbox), "button", button);
return hbox;
}
typedef struct
{
GimpChainButton *chainbutton;
gboolean chain_constrains_ratio;
gdouble orig_x;
gdouble orig_y;
gdouble last_x;
gdouble last_y;
} GimpCoordinatesData;
static void
gimp_coordinates_callback (GtkWidget *widget,
GimpCoordinatesData *gcd)
{
gdouble new_x;
gdouble new_y;
new_x = gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (widget), 0);
new_y = gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (widget), 1);
if (gimp_chain_button_get_active (gcd->chainbutton))
{
if (gcd->chain_constrains_ratio)
{
if ((gcd->orig_x != 0) && (gcd->orig_y != 0))
{
if (new_x != gcd->last_x)
{
gcd->last_x = new_x;
gcd->last_y = new_y = (new_x * gcd->orig_y) / gcd->orig_x;
g_signal_stop_emission_by_name (widget, "value_changed");
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (widget), 1,
new_y);
}
else if (new_y != gcd->last_y)
{
gcd->last_y = new_y;
gcd->last_x = new_x = (new_y * gcd->orig_x) / gcd->orig_y;
g_signal_stop_emission_by_name (widget, "value_changed");
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (widget), 0,
new_x);
}
}
}
else
{
if (new_x != gcd->last_x)
{
gcd->last_y = new_y = gcd->last_x = new_x;
g_signal_stop_emission_by_name (widget, "value_changed");
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (widget), 1, new_x);
}
else if (new_y != gcd->last_y)
{
gcd->last_x = new_x = gcd->last_y = new_y;
g_signal_stop_emission_by_name (widget, "value_changed");
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (widget), 0, new_y);
}
}
}
else
{
if (new_x != gcd->last_x)
gcd->last_x = new_x;
if (new_y != gcd->last_y)
gcd->last_y = new_y;
}
}
/**
* gimp_coordinates_new:
* @unit: The initial unit of the #GimpUnitMenu.
* @unit_format: A printf-like unit-format string as is used with
* gimp_unit_menu_new().
* @menu_show_pixels: %TRUE if the #GimpUnitMenu should contain an item
* for GIMP_UNIT_PIXEL.
* @menu_show_percent: %TRUE if the #GimpUnitMenu should contain an item
* for GIMP_UNIT_PERCENT.
* @spinbutton_width: The horizontal size of the #GimpSizeEntry's
* #GtkSpinButton's.
* @update_policy: The update policy for the #GimpSizeEntry.
* @chainbutton_active: %TRUE if the attached #GimpChainButton should be
* active.
* @chain_constrains_ratio: %TRUE if the chainbutton should constrain the
* fields' aspect ratio. If %FALSE, the values will
* be constrained.
* @xlabel: The label for the X coordinate.
* @x: The initial value of the X coordinate.
* @xres: The horizontal resolution in DPI.
* @lower_boundary_x: The lower boundary of the X coordinate.
* @upper_boundary_x: The upper boundary of the X coordinate.
* @xsize_0: The X value which will be treated as 0%.
* @xsize_100: The X value which will be treated as 100%.
* @ylabel: The label for the Y coordinate.
* @y: The initial value of the Y coordinate.
* @yres: The vertical resolution in DPI.
* @lower_boundary_y: The lower boundary of the Y coordinate.
* @upper_boundary_y: The upper boundary of the Y coordinate.
* @ysize_0: The Y value which will be treated as 0%.
* @ysize_100: The Y value which will be treated as 100%.
*
* Convenience function that creates a #GimpSizeEntry with two fields for x/y
* coordinates/sizes with a #GimpChainButton attached to constrain either the
* two fields' values or the ratio between them.
*
* Returns: The new #GimpSizeEntry.
**/
GtkWidget *
gimp_coordinates_new (GimpUnit unit,
const gchar *unit_format,
gboolean menu_show_pixels,
gboolean menu_show_percent,
gint spinbutton_width,
GimpSizeEntryUpdatePolicy update_policy,
gboolean chainbutton_active,
gboolean chain_constrains_ratio,
const gchar *xlabel,
gdouble x,
gdouble xres,
gdouble lower_boundary_x,
gdouble upper_boundary_x,
gdouble xsize_0, /* % */
gdouble xsize_100, /* % */
const gchar *ylabel,
gdouble y,
gdouble yres,
gdouble lower_boundary_y,
gdouble upper_boundary_y,
gdouble ysize_0, /* % */
gdouble ysize_100 /* % */)
{
GimpCoordinatesData *gcd;
GtkObject *adjustment;
GtkWidget *spinbutton;
GtkWidget *sizeentry;
GtkWidget *chainbutton;
spinbutton = gimp_spin_button_new (&adjustment, 1, 0, 1, 1, 10, 1, 1, 2);
if (spinbutton_width > 0)
{
if (spinbutton_width < 17)
gtk_entry_set_width_chars (GTK_ENTRY (spinbutton), spinbutton_width);
else
gtk_widget_set_size_request (spinbutton, spinbutton_width, -1);
}
sizeentry = gimp_size_entry_new (1, unit, unit_format,
menu_show_pixels,
menu_show_percent,
FALSE,
spinbutton_width,
update_policy);
gtk_table_set_col_spacing (GTK_TABLE (sizeentry), 0, 4);
gtk_table_set_col_spacing (GTK_TABLE (sizeentry), 2, 4);
gimp_size_entry_add_field (GIMP_SIZE_ENTRY (sizeentry),
GTK_SPIN_BUTTON (spinbutton), NULL);
gtk_table_attach_defaults (GTK_TABLE (sizeentry), spinbutton, 1, 2, 0, 1);
gtk_widget_show (spinbutton);
gimp_size_entry_set_unit (GIMP_SIZE_ENTRY (sizeentry),
(update_policy == GIMP_SIZE_ENTRY_UPDATE_RESOLUTION) ||
(menu_show_pixels == FALSE) ?
GIMP_UNIT_INCH : GIMP_UNIT_PIXEL);
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (sizeentry), 0, xres, TRUE);
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (sizeentry), 1, yres, TRUE);
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (sizeentry), 0,
lower_boundary_x, upper_boundary_x);
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (sizeentry), 1,
lower_boundary_y, upper_boundary_y);
if (menu_show_percent)
{
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (sizeentry), 0,
xsize_0, xsize_100);
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (sizeentry), 1,
ysize_0, ysize_100);
}
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (sizeentry), 0, x);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (sizeentry), 1, y);
gimp_size_entry_attach_label (GIMP_SIZE_ENTRY (sizeentry), xlabel, 0, 0, 1.0);
gimp_size_entry_attach_label (GIMP_SIZE_ENTRY (sizeentry), ylabel, 1, 0, 1.0);
chainbutton = gimp_chain_button_new (GIMP_CHAIN_RIGHT);
if (chainbutton_active)
gimp_chain_button_set_active (GIMP_CHAIN_BUTTON (chainbutton), TRUE);
gtk_table_attach (GTK_TABLE (sizeentry), chainbutton, 2, 3, 0, 2,
GTK_SHRINK | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
gtk_widget_show (chainbutton);
gcd = g_new (GimpCoordinatesData, 1);
gcd->chainbutton = GIMP_CHAIN_BUTTON (chainbutton);
gcd->chain_constrains_ratio = chain_constrains_ratio;
gcd->orig_x = x;
gcd->orig_y = y;
gcd->last_x = x;
gcd->last_y = y;
g_signal_connect_swapped (sizeentry, "destroy",
G_CALLBACK (g_free),
gcd);
g_signal_connect (sizeentry, "value_changed",
G_CALLBACK (gimp_coordinates_callback),
gcd);
g_object_set_data (G_OBJECT (sizeentry), "chainbutton", chainbutton);
return sizeentry;
}
/**
* gimp_pixmap_button_new:
* @xpm_data: The XPM data which will be passed to gimp_pixmap_new().
* @text: An optional text which will appear right of the pixmap.
*
* Convenience function that creates a #GtkButton with a #GimpPixmap
* and an optional #GtkLabel.
*
* Returns: The new #GtkButton.
**/
GtkWidget *
gimp_pixmap_button_new (gchar **xpm_data,
const gchar *text)
{
GtkWidget *button;
GtkWidget *pixmap;
button = gtk_button_new ();
pixmap = gimp_pixmap_new (xpm_data);
if (text)
{
GtkWidget *abox;
GtkWidget *hbox;
GtkWidget *label;
abox = gtk_alignment_new (0.5, 0.5, 0.0, 0.0);
gtk_container_add (GTK_CONTAINER (button), abox);
gtk_widget_show (abox);
hbox = gtk_hbox_new (FALSE, 0);
gtk_container_add (GTK_CONTAINER (abox), hbox);
gtk_widget_show (hbox);
gtk_box_pack_start (GTK_BOX (hbox), pixmap, FALSE, FALSE, 4);
gtk_widget_show (pixmap);
label = gtk_label_new_with_mnemonic (text);
gtk_label_set_mnemonic_widget (GTK_LABEL (label), button);
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 4);
gtk_widget_show (label);
}
else
{
gtk_container_add (GTK_CONTAINER (button), pixmap);
gtk_widget_show (pixmap);
}
return button;
}
/*
* Standard Callbacks
*/
/**
* gimp_toggle_button_sensitive_update:
* @toggle_button: The #GtkToggleButton the "set_sensitive" and
* "inverse_sensitive" lists are attached to.
*
* If you attached a pointer to a #GtkWidget with g_object_set_data() and
* the "set_sensitive" key to the #GtkToggleButton, the sensitive state of
* the attached widget will be set according to the toggle button's
* "active" state.
*
* You can attach an arbitrary list of widgets by attaching another
* "set_sensitive" data pointer to the first widget (and so on...).
*
* This function can also set the sensitive state according to the toggle
* button's inverse "active" state by attaching widgets with the
* "inverse_sensitive" key.
**/
void
gimp_toggle_button_sensitive_update (GtkToggleButton *toggle_button)
{
GtkWidget *set_sensitive;
gboolean active;
active = gtk_toggle_button_get_active (toggle_button);
set_sensitive =
g_object_get_data (G_OBJECT (toggle_button), "set_sensitive");
while (set_sensitive)
{
gtk_widget_set_sensitive (set_sensitive, active);
set_sensitive =
g_object_get_data (G_OBJECT (set_sensitive), "set_sensitive");
}
set_sensitive =
g_object_get_data (G_OBJECT (toggle_button), "inverse_sensitive");
while (set_sensitive)
{
gtk_widget_set_sensitive (set_sensitive, ! active);
set_sensitive =
g_object_get_data (G_OBJECT (set_sensitive), "inverse_sensitive");
}
}
/**
* gimp_toggle_button_update:
* @widget: A #GtkToggleButton.
* @data: A pointer to a #gint variable which will store the value of
* gtk_toggle_button_get_active().
*
* Note that this function calls gimp_toggle_button_sensitive_update().
**/
void
gimp_toggle_button_update (GtkWidget *widget,
gpointer data)
{
gint *toggle_val;
toggle_val = (gint *) data;
if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget)))
*toggle_val = TRUE;
else
*toggle_val = FALSE;
gimp_toggle_button_sensitive_update (GTK_TOGGLE_BUTTON (widget));
}
/**
* gimp_radio_button_update:
* @widget: A #GtkRadioButton.
* @data: A pointer to a #gint variable which will store the value of
* GPOINTER_TO_INT (g_object_get_data (@widget, "gimp-item-data")).
*
* Note that this function calls gimp_toggle_button_sensitive_update().
**/
void
gimp_radio_button_update (GtkWidget *widget,
gpointer data)
{
gint *toggle_val;
if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget)))
{
toggle_val = (gint *) data;
*toggle_val = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (widget),
"gimp-item-data"));
}
gimp_toggle_button_sensitive_update (GTK_TOGGLE_BUTTON (widget));
}
/**
* gimp_menu_item_update:
* @widget: A #GtkMenuItem.
* @data: A pointer to a #gint variable which will store the value of
* GPOINTER_TO_INT (g_object_get_data (@widget, "gimp-item-data")).
**/
void
gimp_menu_item_update (GtkWidget *widget,
gpointer data)
{
gint *item_val;
item_val = (gint *) data;
*item_val = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (widget),
"gimp-item-data"));
}
/**
* gimp_int_adjustment_update:
* @adjustment: A #GtkAdjustment.
* @data: A pointer to a #gint variable which will store the
* @adjustment's value.
*
* Note that the #GtkAdjustment's value (which is a #gdouble) will be
* rounded with RINT().
**/
void
gimp_int_adjustment_update (GtkAdjustment *adjustment,
gpointer data)
{
gint *val;
val = (gint *) data;
*val = RINT (adjustment->value);
}
/**
* gimp_uint_adjustment_update:
* @adjustment: A #GtkAdjustment.
* @data: A pointer to a #guint variable which will store the
* @adjustment's value.
*
* Note that the #GtkAdjustment's value (which is a #gdouble) will be rounded
* with (#guint) (value + 0.5).
**/
void
gimp_uint_adjustment_update (GtkAdjustment *adjustment,
gpointer data)
{
guint *val;
val = (guint *) data;
*val = (guint) (adjustment->value + 0.5);
}
/**
* gimp_float_adjustment_update:
* @adjustment: A #GtkAdjustment.
* @data: A pointer to a #gfloat varaiable which will store the
* @adjustment's value.
**/
void
gimp_float_adjustment_update (GtkAdjustment *adjustment,
gpointer data)
{
gfloat *val;
val = (gfloat *) data;
*val = adjustment->value;
}
/**
* gimp_double_adjustment_update:
* @adjustment: A #GtkAdjustment.
* @data: A pointer to a #gdouble variable which will store the
* @adjustment's value.
**/
void
gimp_double_adjustment_update (GtkAdjustment *adjustment,
gpointer data)
{
gdouble *val;
val = (gdouble *) data;
*val = adjustment->value;
}
/**
* gimp_unit_menu_update:
* @widget: A #GimpUnitMenu.
* @data: A pointer to a #GimpUnit variable which will store the unit menu's
* value.
*
* This callback can set the number of decimal digits of an arbitrary number
* of #GtkSpinButton's. To use this functionality, attach the spinbuttons
* as list of data pointers attached with g_object_set_data() with the
* "set_digits" key.
*
* See gimp_toggle_button_sensitive_update() for a description of how
* to set up the list.
**/
void
gimp_unit_menu_update (GtkWidget *widget,
gpointer data)
{
GimpUnit *val;
GtkWidget *spinbutton;
gint digits;
val = (GimpUnit *) data;
*val = gimp_unit_menu_get_unit (GIMP_UNIT_MENU (widget));
digits = ((*val == GIMP_UNIT_PIXEL) ? 0 :
((*val == GIMP_UNIT_PERCENT) ? 2 :
(MIN (6, MAX (3, _gimp_eek.unit_get_digits (*val))))));
digits += gimp_unit_menu_get_pixel_digits (GIMP_UNIT_MENU (widget));
spinbutton = g_object_get_data (G_OBJECT (widget), "set_digits");
while (spinbutton)
{
gtk_spin_button_set_digits (GTK_SPIN_BUTTON (spinbutton), digits);
spinbutton = g_object_get_data (G_OBJECT (spinbutton), "set_digits");
}
}
/*
* Helper Functions
*/
/**
* gimp_table_attach_aligned:
* @table: The #GtkTable the widgets will be attached to.
* @column: The column to start with.
* @row: The row to attach the widgets.
* @label_text: The text for the #GtkLabel which will be attached left of
* the widget.
* @xalign: The horizontal alignment of the #GtkLabel.
* @yalign: The vertival alignment of the #GtkLabel.
* @widget: The #GtkWidget to attach right of the label.
* @colspan: The number of columns the widget will use.
* @left_align: %TRUE if the widget should be left-aligned.
*
* Note that the @label_text can be %NULL and that the widget will be
* attached starting at (@column + 1) in this case, too.
*
* Returns: The created #GtkLabel.
**/
GtkWidget *
gimp_table_attach_aligned (GtkTable *table,
gint column,
gint row,
const gchar *label_text,
gfloat xalign,
gfloat yalign,
GtkWidget *widget,
gint colspan,
gboolean left_align)
{
GtkWidget *label = NULL;
if (label_text)
{
label = gtk_label_new_with_mnemonic (label_text);
gtk_misc_set_alignment (GTK_MISC (label), xalign, yalign);
gtk_label_set_justify (GTK_LABEL (label), GTK_JUSTIFY_RIGHT);
gtk_table_attach (table, label,
column, column + 1,
row, row + 1,
GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (label);
gtk_label_set_mnemonic_widget (GTK_LABEL (label), widget);
}
if (left_align)
{
GtkWidget *hbox = gtk_hbox_new (FALSE, 0);
gtk_box_pack_start (GTK_BOX (hbox), widget, FALSE, FALSE, 0);
gtk_widget_show (widget);
widget = hbox;
}
gtk_table_attach (table, widget,
column + 1, column + 1 + colspan,
row, row + 1,
GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
gtk_widget_show (widget);
return label;
}
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