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23d88f24bd
centimeters. It is tested, but not yet used anywhere. As I don't have the time to finish this now, I add this here for later use or for someone else to integrate it into all gimp dialogs... --Sven
333 lines
9.3 KiB
C
333 lines
9.3 KiB
C
/* LIBGIMP - The GIMP Library
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* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <stdio.h>
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#include <math.h>
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#include "gimpentry.h"
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#define SIZE_MAX_VALUE 500000.0 /* is that enough ?? */
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#define NUM_UNITS 3
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static float gse_unit_factor[] =
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{
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1.0,
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1.0,
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2.54
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};
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static gchar* gse_unit_string[] =
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{
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"px",
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"in",
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"cm"
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};
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static void gimp_size_entry_unit_callback (GtkWidget *widget, gpointer data);
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static void gimp_size_entry_value_callback (GtkWidget *widget, gpointer data);
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enum {
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GSE_VALUE_CHANGED_SIGNAL,
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GSE_UNIT_CHANGED_SIGNAL,
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GSE_RESOLUTION_CHANGED_SIGNAL,
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LAST_SIGNAL
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};
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static gint gimp_size_entry_signals[LAST_SIGNAL] = { 0 };
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static void
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gimp_size_entry_class_init (GimpSizeEntryClass *class)
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{
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GtkObjectClass *object_class;
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object_class = (GtkObjectClass*) class;
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gimp_size_entry_signals[GSE_VALUE_CHANGED_SIGNAL] =
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gtk_signal_new ("value_changed",
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GTK_RUN_FIRST,
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object_class->type,
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GTK_SIGNAL_OFFSET (GimpSizeEntryClass, gimp_size_entry),
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gtk_signal_default_marshaller, GTK_TYPE_NONE, 0);
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gimp_size_entry_signals[GSE_UNIT_CHANGED_SIGNAL] =
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gtk_signal_new ("unit_changed",
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GTK_RUN_FIRST,
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object_class->type,
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GTK_SIGNAL_OFFSET (GimpSizeEntryClass, gimp_size_entry),
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gtk_signal_default_marshaller, GTK_TYPE_NONE, 0);
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gimp_size_entry_signals[GSE_RESOLUTION_CHANGED_SIGNAL] =
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gtk_signal_new ("resolution_changed",
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GTK_RUN_FIRST,
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object_class->type,
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GTK_SIGNAL_OFFSET (GimpSizeEntryClass, gimp_size_entry),
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gtk_signal_default_marshaller, GTK_TYPE_NONE, 0);
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gtk_object_class_add_signals (object_class, gimp_size_entry_signals,
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LAST_SIGNAL);
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class->gimp_size_entry = NULL;
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}
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static void
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gimp_size_entry_init (GimpSizeEntry *gse)
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{
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GtkWidget *spinbutton;
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GtkWidget *menu;
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GtkWidget *menuitem;
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GtkWidget *optionmenu;
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GtkAdjustment *adj;
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guint i;
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adj = (GtkAdjustment *) gtk_adjustment_new (0.0, -SIZE_MAX_VALUE, SIZE_MAX_VALUE,
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1.0, 50.0, 0.0);
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spinbutton = gtk_spin_button_new (adj, 1.0, 0);
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gtk_spin_button_set_shadow_type (GTK_SPIN_BUTTON(spinbutton), GTK_SHADOW_NONE);
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gtk_widget_set_usize (spinbutton, 75, 0);
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gtk_signal_connect (GTK_OBJECT (spinbutton), "changed",
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(GtkSignalFunc) gimp_size_entry_value_callback, gse);
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gtk_box_pack_start (GTK_BOX(gse), spinbutton, FALSE, FALSE, 0);
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gtk_widget_show (spinbutton);
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menu = gtk_menu_new();
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for (i=0; i<NUM_UNITS; i++)
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{
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menuitem = gtk_menu_item_new_with_label (gse_unit_string[i]);
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gtk_menu_append (GTK_MENU (menu), menuitem);
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gtk_signal_connect (GTK_OBJECT (menuitem), "activate",
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(GtkSignalFunc) gimp_size_entry_unit_callback, gse);
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gtk_widget_show(menuitem);
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gtk_object_set_data (GTK_OBJECT (menuitem), "gimp_size_entry_unit", (gpointer)i);
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}
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optionmenu = gtk_option_menu_new();
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gtk_option_menu_set_menu (GTK_OPTION_MENU (optionmenu), menu);
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gtk_box_pack_start (GTK_BOX(gse), optionmenu, FALSE, FALSE, 0);
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gtk_widget_show(optionmenu);
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gse->spinbutton = spinbutton;
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gse->optionmenu = optionmenu;
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gse->resolution = 72;
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}
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guint
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gimp_size_entry_get_type ()
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{
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static guint gse_type = 0;
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if (!gse_type)
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{
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GtkTypeInfo gse_info =
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{
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"GimpSizeEntry",
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sizeof (GimpSizeEntry),
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sizeof (GimpSizeEntryClass),
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(GtkClassInitFunc) gimp_size_entry_class_init,
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(GtkObjectInitFunc) gimp_size_entry_init,
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/* reserved_1 */ NULL,
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/* reserved_2 */ NULL,
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(GtkClassInitFunc) NULL
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};
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gse_type = gtk_type_unique (gtk_hbox_get_type (), &gse_info);
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}
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return gse_type;
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}
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GtkWidget*
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gimp_size_entry_new (gfloat value,
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GSizeUnit unit,
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gfloat resolution,
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guint positive_only)
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{
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GimpSizeEntry *gse;
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float max;
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GtkAdjustment *adj;
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if (resolution <= 0.0)
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return (NULL);
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gse = gtk_type_new (gimp_size_entry_get_type ());
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gse->resolution = resolution;
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gse->positive_only = positive_only;
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gtk_option_menu_set_history (GTK_OPTION_MENU (gse->optionmenu), unit);
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if ((positive_only == TRUE) && (value <= 0.0))
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value = 0.0;
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if (unit != PIXELS)
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{
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max = SIZE_MAX_VALUE / gse->resolution * gse_unit_factor[unit];
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adj = (GtkAdjustment *) gtk_adjustment_new (0.0,
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((positive_only ==TRUE) ? 0.0 : -max),
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max, 0.1, 5.0, 0.0);
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gtk_spin_button_configure (GTK_SPIN_BUTTON (gse->spinbutton), adj, 0.01, 2);
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}
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else
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{
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if (positive_only == TRUE)
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{
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adj = (GtkAdjustment *) gtk_adjustment_new (0.0, 0, SIZE_MAX_VALUE,
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1.0, 50.0, 0.0);
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gtk_spin_button_configure (GTK_SPIN_BUTTON (gse->spinbutton), adj, 1.0, 0);
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}
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}
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gtk_spin_button_set_value (GTK_SPIN_BUTTON (gse->spinbutton), value);
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return GTK_WIDGET (gse);
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}
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void
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gimp_size_entry_set_value (GimpSizeEntry *gse,
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gfloat value)
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{
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gtk_spin_button_set_value (GTK_SPIN_BUTTON (gse->spinbutton), value);
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}
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void
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gimp_size_entry_set_value_as_pixels (GimpSizeEntry *gse,
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gint pixels)
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{
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gfloat value;
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if (gse->unit == PIXELS)
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value = (float)pixels;
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else
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value = (float)pixels / gse->resolution * gse_unit_factor[gse->unit];
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gtk_spin_button_set_value (GTK_SPIN_BUTTON (gse->spinbutton), value);
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}
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gfloat
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gimp_size_entry_get_value (GimpSizeEntry *gse)
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{
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return (gtk_spin_button_get_value_as_float (GTK_SPIN_BUTTON (gse->spinbutton)));
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}
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gint
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gimp_size_entry_get_value_as_pixels (GimpSizeEntry *gse)
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{
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gfloat value;
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value = gtk_spin_button_get_value_as_float (GTK_SPIN_BUTTON (gse->spinbutton));
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if (gse->unit != PIXELS)
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value = value * gse->resolution / gse_unit_factor[gse->unit];
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if (value - floor (value) < ceil (value) - value)
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return floor (value);
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else
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return ceil (value);
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}
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void
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gimp_size_entry_set_unit (GimpSizeEntry *gse,
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GSizeUnit new_unit)
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{
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gfloat value;
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gfloat max;
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GtkAdjustment *adj;
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if (new_unit >= NUM_UNITS)
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new_unit = PIXELS;
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if (new_unit == gse->unit) return;
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value = gtk_spin_button_get_value_as_float (GTK_SPIN_BUTTON (gse->spinbutton));
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gtk_signal_handler_block_by_data (GTK_OBJECT(gse->spinbutton), gse);
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if (new_unit == PIXELS)
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{
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max = SIZE_MAX_VALUE;
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adj = (GtkAdjustment *)gtk_adjustment_new (0.0,
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((gse->positive_only == TRUE) ? 0.0 : -max),
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max, 0.1, 5.0, 0.0);
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gtk_spin_button_configure (GTK_SPIN_BUTTON (gse->spinbutton), adj, 1.0, 0);
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value = value * gse->resolution / gse_unit_factor[gse->unit];
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}
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else
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{
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max = SIZE_MAX_VALUE / gse->resolution * gse_unit_factor[new_unit];
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adj = (GtkAdjustment *)gtk_adjustment_new (0.0,
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((gse->positive_only == TRUE) ? 0.0 : -max),
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max, 0.1, 5.0, 0.0);
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gtk_spin_button_configure (GTK_SPIN_BUTTON (gse->spinbutton), adj, 0.01, 2);
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value = value * gse_unit_factor[new_unit] / gse_unit_factor[gse->unit];
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if (gse->unit == PIXELS)
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value = value / gse->resolution;
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}
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gtk_spin_button_set_value (GTK_SPIN_BUTTON (gse->spinbutton), value);
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gtk_signal_handler_unblock_by_data (GTK_OBJECT(gse->spinbutton), gse);
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gtk_option_menu_set_history (GTK_OPTION_MENU (gse->optionmenu), new_unit);
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gse->unit = new_unit;
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}
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GSizeUnit
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gimp_size_entry_get_unit (GimpSizeEntry *gse)
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{
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return (gse->unit);
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}
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void
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gimp_size_entry_set_resolution (GimpSizeEntry *gse,
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gfloat resolution)
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{
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if (resolution <= 0.0)
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return;
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/* This function does NOT change the value of the size_entry
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for you! You have to take care of that yourself. */
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gse->resolution = resolution;
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gtk_signal_emit (GTK_OBJECT (gse), gimp_size_entry_signals[GSE_RESOLUTION_CHANGED_SIGNAL]);
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}
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static void
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gimp_size_entry_unit_callback (GtkWidget *widget,
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gpointer data)
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{
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GimpSizeEntry *gse;
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guint new_unit;
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gse = data;
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new_unit = (guint) gtk_object_get_data (GTK_OBJECT (widget), "gimp_size_entry_unit");
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if (gse->unit == new_unit)
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return;
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gimp_size_entry_set_unit (GIMP_SIZE_ENTRY(gse), new_unit);
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gtk_signal_emit (GTK_OBJECT (gse), gimp_size_entry_signals[GSE_UNIT_CHANGED_SIGNAL]);
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}
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static void
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gimp_size_entry_value_callback (GtkWidget *widget,
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gpointer data)
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{
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GimpSizeEntry *gse;
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gse = data;
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gtk_signal_emit (GTK_OBJECT (gse), gimp_size_entry_signals[GSE_VALUE_CHANGED_SIGNAL]);
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}
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