mirror of https://github.com/GNOME/gimp.git
532 lines
21 KiB
C
532 lines
21 KiB
C
/* LIBGIMP - The GIMP Library
|
|
* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
|
|
*
|
|
* gimpscaleentry.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 3 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, see
|
|
* <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <gegl.h>
|
|
#include <gtk/gtk.h>
|
|
|
|
#include "libgimpcolor/gimpcolor.h"
|
|
#include "libgimpmath/gimpmath.h"
|
|
#include "libgimpbase/gimpbase.h"
|
|
|
|
#include "gimpwidgets.h"
|
|
|
|
|
|
static void gimp_scale_entry_unconstrained_adjustment_callback (GtkAdjustment *adjustment,
|
|
GtkAdjustment *other_adj);
|
|
static void gimp_scale_entry_exp_adjustment_callback (GtkAdjustment *adjustment,
|
|
GtkAdjustment *other_adj);
|
|
static void gimp_scale_entry_log_adjustment_callback (GtkAdjustment *adjustment,
|
|
GtkAdjustment *other_adj);
|
|
|
|
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);
|
|
|
|
|
|
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, gtk_adjustment_get_value (adjustment));
|
|
|
|
g_signal_handlers_unblock_by_func (other_adj,
|
|
gimp_scale_entry_unconstrained_adjustment_callback,
|
|
adjustment);
|
|
}
|
|
|
|
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 (gtk_adjustment_get_lower (adjustment) <= 0.0)
|
|
value = log (gtk_adjustment_get_value (adjustment) -
|
|
gtk_adjustment_get_lower (adjustment) + 0.1);
|
|
else
|
|
value = log (gtk_adjustment_get_value (adjustment));
|
|
|
|
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 (gtk_adjustment_get_value (adjustment));
|
|
if (gtk_adjustment_get_lower (other_adj) <= 0.0)
|
|
value += gtk_adjustment_get_lower (other_adj) - 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 *scale;
|
|
GtkWidget *spinbutton;
|
|
GtkAdjustment *adjustment;
|
|
GtkAdjustment *return_adj;
|
|
|
|
label = gtk_label_new_with_mnemonic (text);
|
|
gtk_label_set_xalign (GTK_LABEL (label), 0.0);
|
|
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)
|
|
{
|
|
GtkAdjustment *constrained_adj;
|
|
|
|
constrained_adj = (GtkAdjustment *)
|
|
gtk_adjustment_new (value, lower, upper,
|
|
step_increment, page_increment,
|
|
0.0);
|
|
|
|
adjustment = (GtkAdjustment *)
|
|
gtk_adjustment_new (value,
|
|
unconstrained_lower,
|
|
unconstrained_upper,
|
|
step_increment, page_increment, 0.0);
|
|
spinbutton = gtk_spin_button_new (adjustment, step_increment, digits);
|
|
gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (spinbutton), TRUE);
|
|
|
|
g_signal_connect
|
|
(constrained_adj, "value-changed",
|
|
G_CALLBACK (gimp_scale_entry_unconstrained_adjustment_callback),
|
|
adjustment);
|
|
|
|
g_signal_connect
|
|
(adjustment, "value-changed",
|
|
G_CALLBACK (gimp_scale_entry_unconstrained_adjustment_callback),
|
|
constrained_adj);
|
|
|
|
return_adj = adjustment;
|
|
|
|
adjustment = constrained_adj;
|
|
}
|
|
else
|
|
{
|
|
adjustment = (GtkAdjustment *)
|
|
gtk_adjustment_new (value, lower, upper,
|
|
step_increment, page_increment, 0.0);
|
|
spinbutton = gtk_spin_button_new (adjustment, step_increment, digits);
|
|
gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (spinbutton), TRUE);
|
|
|
|
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), adjustment);
|
|
}
|
|
else
|
|
{
|
|
scale = gtk_scale_new (GTK_ORIENTATION_HORIZONTAL, 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_FILL | GTK_SHRINK, GTK_SHRINK, 0, 0);
|
|
gtk_widget_show (spinbutton);
|
|
|
|
if (tooltip || help_id)
|
|
{
|
|
gimp_help_set_help_data (label, 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 GTK_OBJECT (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: 2.2
|
|
**/
|
|
void
|
|
gimp_scale_entry_set_logarithmic (GtkObject *adjustment,
|
|
gboolean logarithmic)
|
|
{
|
|
GtkAdjustment *adj;
|
|
GtkAdjustment *scale_adj;
|
|
|
|
g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
|
|
|
|
adj = GTK_ADJUSTMENT (adjustment);
|
|
scale_adj = GIMP_SCALE_ENTRY_SCALE_ADJ (adjustment);
|
|
|
|
if (logarithmic == gimp_scale_entry_get_logarithmic (adjustment))
|
|
return;
|
|
|
|
if (logarithmic)
|
|
{
|
|
gdouble correction;
|
|
gdouble log_value, log_lower, log_upper;
|
|
gdouble log_step_increment, log_page_increment;
|
|
|
|
correction = (gtk_adjustment_get_lower (scale_adj) > 0 ?
|
|
0 : 0.1 + - gtk_adjustment_get_lower (scale_adj));
|
|
|
|
log_value = log (gtk_adjustment_get_value (scale_adj) + correction);
|
|
log_lower = log (gtk_adjustment_get_lower (scale_adj) + correction);
|
|
log_upper = log (gtk_adjustment_get_upper (scale_adj) + correction);
|
|
log_step_increment =
|
|
(log_upper - log_lower) / ((gtk_adjustment_get_upper (scale_adj) -
|
|
gtk_adjustment_get_lower (scale_adj)) /
|
|
gtk_adjustment_get_step_increment (scale_adj));
|
|
log_page_increment =
|
|
(log_upper - log_lower) / ((gtk_adjustment_get_upper (scale_adj) -
|
|
gtk_adjustment_get_lower (scale_adj)) /
|
|
gtk_adjustment_get_page_increment (scale_adj));
|
|
|
|
if (scale_adj == adj)
|
|
{
|
|
GtkObject *new_adj;
|
|
|
|
new_adj = gtk_adjustment_new (gtk_adjustment_get_value (scale_adj),
|
|
gtk_adjustment_get_lower (scale_adj),
|
|
gtk_adjustment_get_upper (scale_adj),
|
|
gtk_adjustment_get_step_increment (scale_adj),
|
|
gtk_adjustment_get_page_increment (scale_adj),
|
|
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,
|
|
gimp_scale_entry_unconstrained_adjustment_callback,
|
|
scale_adj);
|
|
|
|
g_signal_handlers_disconnect_by_func (scale_adj,
|
|
gimp_scale_entry_unconstrained_adjustment_callback,
|
|
adj);
|
|
}
|
|
|
|
gtk_adjustment_configure (scale_adj,
|
|
log_value, log_lower, log_upper,
|
|
log_step_increment, log_page_increment, 0.0);
|
|
|
|
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;
|
|
|
|
g_signal_handlers_disconnect_by_func (adj,
|
|
gimp_scale_entry_log_adjustment_callback,
|
|
scale_adj);
|
|
|
|
g_signal_handlers_disconnect_by_func (scale_adj,
|
|
gimp_scale_entry_exp_adjustment_callback,
|
|
adj);
|
|
|
|
lower = exp (gtk_adjustment_get_lower (scale_adj));
|
|
upper = exp (gtk_adjustment_get_upper (scale_adj));
|
|
|
|
if (gtk_adjustment_get_lower (adj) <= 0.0)
|
|
{
|
|
lower += - 0.1 + gtk_adjustment_get_lower (adj);
|
|
upper += - 0.1 + gtk_adjustment_get_lower (adj);
|
|
}
|
|
|
|
gtk_adjustment_configure (scale_adj,
|
|
gtk_adjustment_get_value (adj),
|
|
lower, upper,
|
|
gtk_adjustment_get_step_increment (adj),
|
|
gtk_adjustment_get_page_increment (adj),
|
|
0.0);
|
|
|
|
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: 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);
|
|
}
|