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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 <gtk/gtk.h>
#include "libgimpcolor/gimpcolor.h"
#include "libgimpmath/gimpmath.h"
#include "libgimpbase/gimpbase.h"
#include "gimpwidgetstypes.h"
#include "gimpchainbutton.h"
#include "gimpsizeentry.h"
#include "gimpunitmenu.h"
#undef GIMP_DISABLE_DEPRECATED
#include "gimppixmap.h"
#include "gimpwidgets.h"
#include "libgimp/libgimp-intl.h"
/**
* 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, 2);
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_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 (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;
frame = gimp_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, 2);
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;
frame = gimp_frame_new (frame_title);
gtk_container_add (GTK_CONTAINER (frame), vbox);
gtk_widget_show (vbox);
return frame;
}
return vbox;
}
/**
* gimp_int_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.
* @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. This function does the same thing as
* gimp_radio_group_new2(), but it takes integers as @item_data instead of
* pointers, since that is a very common case (mapping an enum to a radio
* group).
*
* Returns: A #GtkFrame or #GtkVbox (depending on @in_frame).
**/
GtkWidget *
gimp_int_radio_group_new (gboolean in_frame,
const gchar *frame_title,
GCallback radio_button_callback,
gpointer callback_data,
gint initial, /* item_data */
/* specify radio buttons as va_list:
* const gchar *label,
* gint item_data,
* GtkWidget **widget_ptr,
*/
...)
{
GtkWidget *vbox;
GtkWidget *button;
GSList *group;
/* radio button variables */
const gchar *label;
gint item_data;
gpointer item_ptr;
GtkWidget **widget_ptr;
va_list args;
vbox = gtk_vbox_new (FALSE, 2);
group = NULL;
/* create the radio buttons */
va_start (args, initial);
label = va_arg (args, const gchar *);
while (label)
{
item_data = va_arg (args, gint);
widget_ptr = va_arg (args, GtkWidget **);
item_ptr = GINT_TO_POINTER (item_data);
if (label != GINT_TO_POINTER (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_ptr);
/* backward compatibility */
g_object_set_data (G_OBJECT (button), "user_data", item_ptr);
}
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;
frame = gimp_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_int_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. This function does the same thing as
* gimp_radio_group_set_active(), but takes integers as @item_data instead
* of pointers.
**/
void
gimp_int_radio_group_set_active (GtkRadioButton *radio_button,
gint item_data)
{
g_return_if_fail (GTK_IS_RADIO_BUTTON (radio_button));
gimp_radio_group_set_active (radio_button, GINT_TO_POINTER (item_data));
}
/**
* 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(). It also calls
* gtk_spin_button_set_numeric() so that non-numeric text cannot be
* entered.
*
* 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 void
gimp_scale_entry_exp_adjustment_callback (GtkAdjustment *, GtkAdjustment *);
static void
gimp_scale_entry_log_adjustment_callback (GtkAdjustment *adjustment,
GtkAdjustment *other_adj)
{
gdouble value;
g_signal_handlers_block_by_func (other_adj,
gimp_scale_entry_exp_adjustment_callback,
adjustment);
if (adjustment->lower <= 0.0)
value = log (adjustment->value - adjustment->lower + 0.1);
else
value = log (adjustment->value);
gtk_adjustment_set_value (other_adj, value);
g_signal_handlers_unblock_by_func (other_adj,
gimp_scale_entry_exp_adjustment_callback,
adjustment);
}
static void
gimp_scale_entry_exp_adjustment_callback (GtkAdjustment *adjustment,
GtkAdjustment *other_adj)
{
gdouble value;
g_signal_handlers_block_by_func (other_adj,
gimp_scale_entry_log_adjustment_callback,
adjustment);
value = exp (adjustment->value);
if (other_adj->lower <= 0.0)
value += other_adj->lower - 0.1;
gtk_adjustment_set_value (other_adj, value);
g_signal_handlers_unblock_by_func (other_adj,
gimp_scale_entry_log_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 *ebox;
GtkWidget *scale;
GtkWidget *spinbutton;
GtkObject *adjustment;
GtkObject *return_adj;
label = gtk_label_new_with_mnemonic (text);
gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
if (tooltip)
{
ebox = g_object_new (GTK_TYPE_EVENT_BOX,
"visible-window", FALSE,
NULL);
gtk_table_attach (GTK_TABLE (table), ebox,
column, column + 1, row, row + 1,
GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (ebox);
gtk_container_add (GTK_CONTAINER (ebox), label);
}
else
{
ebox = NULL;
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)
{
if (ebox)
gimp_help_set_help_data (ebox, 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_logarithmic:
* @adjustment: a #GtkAdjustment as returned by gimp_scale_entry_new()
* @logarithmic: a boolean value to set or reset logarithmic behaviour
* of the scale widget
*
* Sets whether the scale_entry's scale widget will behave in a linear
* or logharithmic fashion. Useful when an entry has to attend large
* ranges, but smaller selections on that range require a finer
* adjustment.
*
* Since: GIMP 2.2
**/
void
gimp_scale_entry_set_logarithmic (GtkObject *adjustment,
gboolean logarithmic)
{
GtkAdjustment *adj;
GtkAdjustment *scale_adj;
gdouble correction;
gdouble log_value, log_lower, log_upper;
gdouble log_step_increment, log_page_increment;
g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
adj = GTK_ADJUSTMENT (adjustment);
scale_adj = GIMP_SCALE_ENTRY_SCALE_ADJ (adjustment);
if (logarithmic)
{
if (gimp_scale_entry_get_logarithmic (adjustment))
return;
correction = scale_adj->lower > 0 ? 0 : 0.1 + - scale_adj->lower;
log_value = log (scale_adj->value + correction);
log_lower = log (scale_adj->lower + correction);
log_upper = log (scale_adj->upper + correction);
log_step_increment = (log_upper - log_lower) / ((scale_adj->upper -
scale_adj->lower) /
scale_adj->step_increment);
log_page_increment = (log_upper - log_lower) / ((scale_adj->upper -
scale_adj->lower) /
scale_adj->page_increment);
if (scale_adj == adj)
{
GtkObject *new_adj;
gdouble lower;
gdouble upper;
lower = scale_adj->lower;
upper = scale_adj->upper;
new_adj = gtk_adjustment_new (scale_adj->value,
scale_adj->lower,
scale_adj->upper,
scale_adj->step_increment,
scale_adj->page_increment,
0.0);
gtk_range_set_adjustment (GTK_RANGE (GIMP_SCALE_ENTRY_SCALE (adj)),
GTK_ADJUSTMENT (new_adj));
scale_adj = (GtkAdjustment *) new_adj;
}
else
{
g_signal_handlers_disconnect_by_func (adj,
G_CALLBACK (gimp_scale_entry_unconstrained_adjustment_callback),
scale_adj);
g_signal_handlers_disconnect_by_func (scale_adj,
G_CALLBACK (gimp_scale_entry_unconstrained_adjustment_callback),
adj);
}
scale_adj->value = log_value;
scale_adj->lower = log_lower;
scale_adj->upper = log_upper;
scale_adj->step_increment = log_step_increment;
scale_adj->page_increment = log_page_increment;
g_signal_connect (scale_adj, "value-changed",
G_CALLBACK (gimp_scale_entry_exp_adjustment_callback),
adj);
g_signal_connect (adj, "value-changed",
G_CALLBACK (gimp_scale_entry_log_adjustment_callback),
scale_adj);
g_object_set_data (G_OBJECT (adjustment),
"logarithmic", GINT_TO_POINTER (TRUE));
}
else
{
gdouble lower, upper;
if (! gimp_scale_entry_get_logarithmic (adjustment))
return;
g_signal_handlers_disconnect_by_func (adj,
G_CALLBACK (gimp_scale_entry_log_adjustment_callback),
scale_adj);
g_signal_handlers_disconnect_by_func (scale_adj,
G_CALLBACK (gimp_scale_entry_exp_adjustment_callback),
adj);
lower = exp (scale_adj->lower);
upper = exp (scale_adj->upper);
if (adj->lower <= 0.0)
{
lower += - 0.1 + adj->lower;
upper += - 0.1 + adj->lower;
}
scale_adj->value = adj->value;
scale_adj->lower = lower;
scale_adj->upper = upper;
scale_adj->step_increment = adj->step_increment;
scale_adj->page_increment = adj->page_increment;
g_signal_connect (scale_adj, "value-changed",
G_CALLBACK (gimp_scale_entry_unconstrained_adjustment_callback),
adj);
g_signal_connect (adj, "value-changed",
G_CALLBACK (gimp_scale_entry_unconstrained_adjustment_callback),
scale_adj);
g_object_set_data (G_OBJECT (adjustment),
"logarithmic", GINT_TO_POINTER (FALSE));
}
}
/**
* gimp_scale_entry_get_logarithmic:
* @adjustment: a #GtkAdjustment as returned by gimp_scale_entry_new()
*
* Return value: %TRUE if the the entry's scale widget will behave in
* logharithmic fashion, %FALSE for linear behaviour.
*
* Since: GIMP 2.2
**/
gboolean
gimp_scale_entry_get_logarithmic (GtkObject *adjustment)
{
return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (adjustment),
"logarithmic"));
}
/**
* 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 *spinbutton = data;
/* Generate a new seed if the "New Seed" button was clicked or
* of the "Randomize" toggle is activated
*/
if (! GTK_IS_TOGGLE_BUTTON (widget) ||
gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget)))
{
gtk_spin_button_set_value (GTK_SPIN_BUTTON (spinbutton),
(guint) g_random_int ());
}
}
/**
* gimp_random_seed_new:
* @seed: A pointer to the variable which stores the random seed.
* @random_seed: A pointer to a boolean indicating whether seed should be
* initialised randomly or not.
*
* 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,
gboolean *random_seed)
{
GtkWidget *hbox;
GtkWidget *toggle;
GtkWidget *spinbutton;
GtkObject *adj;
GtkWidget *button;
g_return_val_if_fail (seed != NULL, NULL);
g_return_val_if_fail (random_seed != NULL, NULL);
hbox = gtk_hbox_new (FALSE, 4);
/* If we're being asked to generate a random seed, generate one. */
if (*random_seed)
*seed = g_random_int ();
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);
gtk_widget_show (spinbutton);
g_signal_connect (adj, "value-changed",
G_CALLBACK (gimp_uint_adjustment_update),
seed);
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 (_("_New Seed"));
gtk_misc_set_padding (GTK_MISC (GTK_BIN (button)->child), 2, 0);
gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0);
gtk_widget_show (button);
/* 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);
gimp_help_set_help_data (button,
_("Seed random number generator with a generated "
"random number"),
NULL);
toggle = gtk_check_button_new_with_mnemonic (_("_Randomize"));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), *random_seed);
gtk_box_pack_start (GTK_BOX (hbox), toggle, FALSE, FALSE, 0);
gtk_widget_show (toggle);
g_signal_connect (toggle, "toggled",
G_CALLBACK (gimp_toggle_button_update),
random_seed);
/* Need to create a new seed when the "Randomize" toggle is activated */
g_signal_connect (toggle, "toggled",
G_CALLBACK (gimp_random_seed_update),
spinbutton);
g_object_set_data (G_OBJECT (hbox), "spinbutton", spinbutton);
g_object_set_data (G_OBJECT (hbox), "button", button);
g_object_set_data (G_OBJECT (hbox), "toggle", toggle);
/* Set sensitivity data for the toggle, this stuff makes
* gimp_toggle_button_sensitive_update work
*/
g_object_set_data (G_OBJECT (toggle), "inverse_sensitive", spinbutton);
g_object_set_data (G_OBJECT (spinbutton), "inverse_sensitive", button);
/* Initialise sensitivity */
gimp_toggle_button_update (toggle, random_seed);
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 (ROUND (new_x) != ROUND (gcd->last_x))
{
gcd->last_x = new_x;
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);
gcd->last_y
= gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (widget), 1);
}
else if (ROUND (new_y) != ROUND (gcd->last_y))
{
gcd->last_y = new_y;
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);
gcd->last_x
= gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (widget), 0);
}
}
}
else
{
if (new_x != gcd->last_x)
{
new_y = new_x;
/* g_signal_stop_emission_by_name (widget, "value-changed"); */
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (widget), 1, new_x);
gcd->last_y = gcd->last_x
= gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (widget), 1);
}
else if (new_y != gcd->last_y)
{
new_x = new_y;
/* g_signal_stop_emission_by_name (widget, "value-changed"); */
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (widget), 0, new_y);
gcd->last_x = gcd->last_y
= gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (widget), 0);
}
}
}
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, 0.0);
gimp_size_entry_attach_label (GIMP_SIZE_ENTRY (sizeentry),
ylabel, 1, 0, 0.0);
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_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_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
*/
static GtkWidget *
find_mnemonic_widget (GtkWidget *widget,
gint level)
{
GtkWidget *mnemonic_widget = NULL;
if (GTK_WIDGET_GET_CLASS (widget)->activate_signal ||
GTK_WIDGET_CAN_FOCUS (widget) ||
GTK_WIDGET_GET_CLASS (widget)->mnemonic_activate !=
GTK_WIDGET_CLASS (g_type_class_peek (GTK_TYPE_WIDGET))->mnemonic_activate)
{
mnemonic_widget = widget;
}
else if (GTK_IS_CONTAINER (widget))
{
GList *children;
GList *list;
children = gtk_container_get_children (GTK_CONTAINER (widget));
for (list = children; list; list = g_list_next (list))
{
mnemonic_widget = find_mnemonic_widget (list->data, level + 1);
if (mnemonic_widget)
break;
}
g_list_free (children);
}
return mnemonic_widget;
}
/**
* 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)
{
GtkWidget *mnemonic_widget;
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_LEFT);
gtk_table_attach (table, label,
column, column + 1,
row, row + 1,
GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (label);
mnemonic_widget = find_mnemonic_widget (widget, 0);
if (mnemonic_widget)
gtk_label_set_mnemonic_widget (GTK_LABEL (label), mnemonic_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;
}
/**
* gimp_label_set_attributes:
* @label: a #GtkLabel
* @...: a list of PangoAttrType and value pairs terminated by -1.
*
* Sets Pango attributes on a #GtkLabel in a more convenient way than
* gtk_label_set_attributes().
*
* This function is useful if you want to change the font attributes
* of a #GtkLabel. This is an alternative to using PangoMarkup which
* is slow to parse and akward to handle in an i18n-friendly way.
*
* The attributes are set on the complete label, from start to end. If
* you need to set attributes on part of the label, you will have to
* use the PangoAttributes API directly.
*
* Since: GIMP 2.2
**/
void
gimp_label_set_attributes (GtkLabel *label,
...)
{
PangoAttribute *attr = NULL;
PangoAttrList *attrs;
va_list args;
g_return_if_fail (GTK_IS_LABEL (label));
attrs = pango_attr_list_new ();
va_start (args, label);
do
{
PangoAttrType attr_type = va_arg (args, PangoAttrType);
switch (attr_type)
{
case PANGO_ATTR_LANGUAGE:
attr = pango_attr_language_new (va_arg (args, PangoLanguage *));
break;
case PANGO_ATTR_FAMILY:
attr = pango_attr_family_new (va_arg (args, const gchar *));
break;
case PANGO_ATTR_STYLE:
attr = pango_attr_style_new (va_arg (args, PangoStyle));
break;
case PANGO_ATTR_WEIGHT:
attr = pango_attr_weight_new (va_arg (args, PangoWeight));
break;
case PANGO_ATTR_VARIANT:
attr = pango_attr_variant_new (va_arg (args, PangoVariant));
break;
case PANGO_ATTR_STRETCH:
attr = pango_attr_stretch_new (va_arg (args, PangoStretch));
break;
case PANGO_ATTR_SIZE:
attr = pango_attr_size_new (va_arg (args, gint));
break;
case PANGO_ATTR_FONT_DESC:
attr = pango_attr_font_desc_new (va_arg (args,
const PangoFontDescription *));
break;
case PANGO_ATTR_FOREGROUND:
{
const PangoColor *color = va_arg (args, const PangoColor *);
attr = pango_attr_foreground_new (color->red,
color->green,
color->blue);
}
break;
case PANGO_ATTR_BACKGROUND:
{
const PangoColor *color = va_arg (args, const PangoColor *);
attr = pango_attr_background_new (color->red,
color->green,
color->blue);
}
break;
case PANGO_ATTR_UNDERLINE:
attr = pango_attr_underline_new (va_arg (args, PangoUnderline));
break;
case PANGO_ATTR_STRIKETHROUGH:
attr = pango_attr_underline_new (va_arg (args, gboolean));
break;
case PANGO_ATTR_RISE:
attr = pango_attr_rise_new (va_arg (args, gint));
break;
case PANGO_ATTR_SCALE:
attr = pango_attr_scale_new (va_arg (args, gdouble));
break;
default:
g_warning ("%s: invalid PangoAttribute type %d",
G_STRFUNC, attr_type);
case -1:
case PANGO_ATTR_INVALID:
attr = NULL;
break;
}
if (attr)
{
attr->start_index = 0;
attr->end_index = -1;
pango_attr_list_insert (attrs, attr);
}
}
while (attr);
va_end (args);
gtk_label_set_attributes (label, attrs);
pango_attr_list_unref (attrs);
}
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