+++ /dev/null
-/*
- * (GLABELS) Label and Business Card Creation program for GNOME
- *
- * prop_vector.c: vector properties widget module
- *
- * Copyright (C) 2001-2002 Jim Evins <evins@snaught.com>.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <config.h>
-
-#include "prop_vector.h"
-#include "prefs.h"
-
-#include "debug.h"
-
-#include <math.h>
-
-#ifndef M_PI
-#define M_PI 3.14159265358979323846 /* pi */
-#endif
-
-#define LENGTH(x,y) sqrt( (x)*(x) + (y)*(y) )
-#define ANGLE(x,y) ( (180.0/M_PI)*atan2( -(y), (x) ) )
-#define COMP_X(l,a) ( (l) * cos( (M_PI/180.0)*(a) ) )
-#define COMP_Y(l,a) ( -(l) * sin( (M_PI/180.0)*(a) ) )
-
-/*===========================================*/
-/* Private types */
-/*===========================================*/
-
-enum {
- CHANGED,
- LAST_SIGNAL
-};
-
-typedef void (*glPropVectorSignal) (GtkObject * object, gpointer data);
-
-/*===========================================*/
-/* Private globals */
-/*===========================================*/
-
-static GtkContainerClass *parent_class;
-
-static gint prop_vector_signals[LAST_SIGNAL] = { 0 };
-\f
-/*===========================================*/
-/* Local function prototypes */
-/*===========================================*/
-
-static void gl_prop_vector_class_init (glPropVectorClass * class);
-static void gl_prop_vector_init (glPropVector * vector);
-static void gl_prop_vector_destroy (GtkObject * object);
-static void gl_prop_vector_construct (glPropVector * vector, gchar * label);
-static void changed_cb (glPropVector * vector);
-\f
-/*================================================================*/
-/* Boilerplate Object stuff. */
-/*================================================================*/
-guint
-gl_prop_vector_get_type (void)
-{
- static guint prop_vector_type = 0;
-
- if (!prop_vector_type) {
- GtkTypeInfo prop_vector_info = {
- "glPropVector",
- sizeof (glPropVector),
- sizeof (glPropVectorClass),
- (GtkClassInitFunc) gl_prop_vector_class_init,
- (GtkObjectInitFunc) gl_prop_vector_init,
- (GtkArgSetFunc) NULL,
- (GtkArgGetFunc) NULL,
- };
-
- prop_vector_type = gtk_type_unique (gtk_vbox_get_type (),
- &prop_vector_info);
- }
-
- return prop_vector_type;
-}
-
-static void
-gl_prop_vector_class_init (glPropVectorClass * class)
-{
- GtkObjectClass *object_class;
- GtkWidgetClass *widget_class;
-
- object_class = (GtkObjectClass *) class;
- widget_class = (GtkWidgetClass *) class;
-
- parent_class = gtk_type_class (gtk_vbox_get_type ());
-
- object_class->destroy = gl_prop_vector_destroy;
-
- prop_vector_signals[CHANGED] =
- gtk_signal_new ("changed", GTK_RUN_LAST, object_class->type,
- GTK_SIGNAL_OFFSET (glPropVectorClass, changed),
- gtk_signal_default_marshaller, GTK_TYPE_NONE, 0);
- gtk_object_class_add_signals (object_class, prop_vector_signals,
- LAST_SIGNAL);
-
- class->changed = NULL;
-}
-
-static void
-gl_prop_vector_init (glPropVector * vector)
-{
- vector->len_spin = NULL;
- vector->angle_spin = NULL;
-}
-
-static void
-gl_prop_vector_destroy (GtkObject * object)
-{
- glPropVector *vector;
- glPropVectorClass *class;
-
- g_return_if_fail (object != NULL);
- g_return_if_fail (GL_IS_PROP_VECTOR (object));
-
- vector = GL_PROP_VECTOR (object);
- class = GL_PROP_VECTOR_CLASS (GTK_OBJECT (vector)->klass);
-
- GTK_OBJECT_CLASS (parent_class)->destroy (object);
-}
-
-GtkWidget *
-gl_prop_vector_new (gchar * label)
-{
- glPropVector *vector;
-
- vector = gtk_type_new (gl_prop_vector_get_type ());
-
- gl_prop_vector_construct (vector, label);
-
- return GTK_WIDGET (vector);
-}
-\f
-/*============================================================*/
-/* Construct composite widget. */
-/*============================================================*/
-static void
-gl_prop_vector_construct (glPropVector * vector,
- gchar * label)
-{
- GtkWidget *wvbox, *wframe, *wtable, *wlabel;
- GtkObject *adjust;
- const gchar *units_string;
- gdouble units_per_point, climb_rate;
- gint digits;
-
- units_string = gl_prefs_get_units_string ();
- units_per_point = gl_prefs_get_units_per_point ();
- climb_rate = gl_prefs_get_units_step_size ();
- digits = gl_prefs_get_units_precision ();
-
- wvbox = GTK_WIDGET (vector);
-
- wframe = gtk_frame_new (label);
- gtk_box_pack_start (GTK_BOX (wvbox), wframe, FALSE, FALSE, 0);
-
- wtable = gtk_table_new (2, 3, TRUE);
- gtk_container_set_border_width (GTK_CONTAINER (wtable), 10);
- gtk_table_set_row_spacings (GTK_TABLE (wtable), 5);
- gtk_table_set_col_spacings (GTK_TABLE (wtable), 5);
- gtk_container_add (GTK_CONTAINER (wframe), wtable);
-
- /* Length label */
- wlabel = gtk_label_new (_("Length:"));
- gtk_misc_set_alignment (GTK_MISC (wlabel), 0, 0.5);
- gtk_label_set_justify (GTK_LABEL (wlabel), GTK_JUSTIFY_RIGHT);
- gtk_table_attach_defaults (GTK_TABLE (wtable), wlabel, 0, 1, 0, 1);
- /* Length spin */
- adjust = gtk_adjustment_new (climb_rate, climb_rate, 100.0, climb_rate,
- 10.0, 10.0);
- vector->len_spin = gtk_spin_button_new (GTK_ADJUSTMENT (adjust),
- climb_rate, digits);
- gtk_spin_button_set_snap_to_ticks (GTK_SPIN_BUTTON (vector->len_spin),
- TRUE);
- gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (vector->len_spin), TRUE);
- gtk_signal_connect_object (GTK_OBJECT (vector->len_spin), "changed",
- GTK_SIGNAL_FUNC (changed_cb),
- GTK_OBJECT (vector));
- gtk_table_attach_defaults (GTK_TABLE (wtable), vector->len_spin, 1, 2,
- 0, 1);
- /* Length units label */
- vector->len_units_label = gtk_label_new (units_string);
- gtk_misc_set_alignment (GTK_MISC (vector->len_units_label), 0, 0.5);
- gtk_table_attach_defaults (GTK_TABLE (wtable), vector->len_units_label,
- 2, 3, 0, 1);
-
- /* Angle label */
- wlabel = gtk_label_new (_("Angle:"));
- gtk_misc_set_alignment (GTK_MISC (wlabel), 0, 0.5);
- gtk_table_attach_defaults (GTK_TABLE (wtable), wlabel, 0, 1, 1, 2);
- /* Angle spin */
- adjust = gtk_adjustment_new (0.0, -180.0, +180.0, 1.0, 10.0, 10.0);
- vector->angle_spin =
- gtk_spin_button_new (GTK_ADJUSTMENT (adjust), 1.0, 0);
- gtk_spin_button_set_snap_to_ticks (GTK_SPIN_BUTTON (vector->angle_spin),
- TRUE);
- gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (vector->angle_spin),
- TRUE);
- gtk_signal_connect_object (GTK_OBJECT (vector->angle_spin), "changed",
- GTK_SIGNAL_FUNC (changed_cb),
- GTK_OBJECT (vector));
- gtk_table_attach_defaults (GTK_TABLE (wtable), vector->angle_spin, 1, 2,
- 1, 2);
- /* Angle units label */
- vector->angle_units_label = gtk_label_new (_("degrees"));
- gtk_misc_set_alignment (GTK_MISC (vector->angle_units_label), 0, 0.5);
- gtk_table_attach_defaults (GTK_TABLE (wtable),
- vector->angle_units_label, 2, 3, 1, 2);
-
-}
-
-/*--------------------------------------------------------------------------*/
-/* PRIVATE. Callback for when any control in the widget has changed. */
-/*--------------------------------------------------------------------------*/
-static void
-changed_cb (glPropVector * vector)
-{
- /* Emit our "changed" signal */
- gtk_signal_emit (GTK_OBJECT (vector), prop_vector_signals[CHANGED]);
-}
-\f
-/*====================================================================*/
-/* query values from controls. */
-/*====================================================================*/
-void
-gl_prop_vector_get_params (glPropVector * vector,
- gdouble * dx,
- gdouble * dy)
-{
- gdouble length, angle;
- gdouble units_per_point;
-
- units_per_point = gl_prefs_get_units_per_point ();
-
- length =
- gtk_spin_button_get_value_as_float (GTK_SPIN_BUTTON
- (vector->len_spin));
- angle =
- gtk_spin_button_get_value_as_float (GTK_SPIN_BUTTON
- (vector->angle_spin));
-
- length /= units_per_point;
-
- *dx = COMP_X (length, angle);
- *dy = COMP_Y (length, angle);
-}
-
-/*====================================================================*/
-/* set values and ranges for controls. */
-/*====================================================================*/
-void
-gl_prop_vector_set_params (glPropVector * vector,
- gdouble dx,
- gdouble dy,
- gdouble x_max,
- gdouble y_max)
-{
- GtkObject *length_adjust;
- gdouble length, angle;
- const gchar *units_string;
- gdouble units_per_point, climb_rate;
- gint digits;
-
- units_string = gl_prefs_get_units_string ();
- units_per_point = gl_prefs_get_units_per_point ();
- climb_rate = gl_prefs_get_units_step_size ();
- digits = gl_prefs_get_units_precision ();
-
- /* Put everything into our display units */
- dx *= units_per_point;
- dy *= units_per_point;
- x_max *= units_per_point;
- y_max *= units_per_point;
-
- length = LENGTH (dx, dy);
- angle = ANGLE (dx, dy);
-
- length_adjust = gtk_adjustment_new (length, 0.0, LENGTH (x_max, y_max),
- climb_rate, 10.0, 10.0);
- gtk_spin_button_configure (GTK_SPIN_BUTTON (vector->len_spin),
- GTK_ADJUSTMENT (length_adjust),
- climb_rate, digits);
- gtk_spin_button_update (GTK_SPIN_BUTTON (vector->len_spin));
-
- gtk_spin_button_set_value (GTK_SPIN_BUTTON (vector->angle_spin), angle);
-}
projects / glabels / blobdiff