487 lines
13 KiB
C
487 lines
13 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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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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/*
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* Modified by the GTK+ Team and others 1997-1999. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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/* modified by andreas meyer <hexx3000@gmx.de> */
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#include <stdio.h>
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#include "gettext.h"
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#define _(Text) dgettext (PACKAGE,Text)
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#include "gtk-custom-ruler.h"
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enum
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{
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PROP_0,
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PROP_LOWER,
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PROP_UPPER,
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PROP_POSITION,
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PROP_MAX_SIZE,
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PROP_SHOW_POSITION
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};
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static void gtk_custom_ruler_class_init (GtkCustomRulerClass * klass);
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static void gtk_custom_ruler_init (GtkCustomRuler * ruler);
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static void gtk_custom_ruler_realize (GtkWidget * widget);
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static void gtk_custom_ruler_unrealize (GtkWidget * widget);
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static void gtk_custom_ruler_size_allocate (GtkWidget * widget, GtkAllocation * allocation);
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static gint gtk_custom_ruler_expose (GtkWidget * widget, GdkEventExpose * event);
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static void gtk_custom_ruler_make_pixmap (GtkCustomRuler * ruler);
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static void gtk_custom_ruler_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec);
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static void gtk_custom_ruler_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec);
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static gint
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default_metric_get_marks (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
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{
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return 0;
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}
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static const GtkCustomMetric default_metric = {
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1.0,
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default_metric_get_marks
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};
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static GtkWidgetClass *parent_class;
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GType gtk_custom_ruler_get_type (void)
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{
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static GType ruler_type = 0;
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if (!ruler_type)
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{
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static const GTypeInfo ruler_info =
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{
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sizeof (GtkCustomRulerClass),
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(GBaseInitFunc) NULL, /* base_init */
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(GBaseFinalizeFunc) NULL, /* base_finalize */
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(GClassInitFunc) gtk_custom_ruler_class_init,
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(GClassFinalizeFunc) NULL, /* class_finalize */
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NULL, /* class_data */
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sizeof (GtkCustomRuler),
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0, /* n_preallocs */
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(GInstanceInitFunc) gtk_custom_ruler_init,
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};
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ruler_type = g_type_register_static (GTK_TYPE_WIDGET, "GtkCustomRuler",
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&ruler_info, 0);
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}
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return ruler_type;
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}
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static void
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gtk_custom_ruler_class_init (GtkCustomRulerClass * class)
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{
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GObjectClass *gobject_class;
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GtkWidgetClass *widget_class;
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gobject_class = (GObjectClass *) class;
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widget_class = (GtkWidgetClass*) class;
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parent_class = g_type_class_peek_parent (class);
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gobject_class->set_property = gtk_custom_ruler_set_property;
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gobject_class->get_property = gtk_custom_ruler_get_property;
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widget_class->realize = gtk_custom_ruler_realize;
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widget_class->unrealize = gtk_custom_ruler_unrealize;
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widget_class->size_allocate = gtk_custom_ruler_size_allocate;
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widget_class->expose_event = gtk_custom_ruler_expose;
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class->draw_ticks = NULL;
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class->draw_pos = NULL;
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g_object_class_install_property (gobject_class,
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PROP_LOWER,
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g_param_spec_double ("lower",
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_("Lower"),
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_("Lower limit of ruler"),
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-G_MAXDOUBLE,
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G_MAXDOUBLE,
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0.0,
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G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class,
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PROP_UPPER,
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g_param_spec_double ("upper",
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_("Upper"),
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_("Upper limit of ruler"),
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-G_MAXDOUBLE,
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G_MAXDOUBLE,
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0.0,
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G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class,
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PROP_POSITION,
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g_param_spec_double ("position",
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_("Position"),
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_("Position of mark on the ruler"),
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-G_MAXDOUBLE,
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G_MAXDOUBLE,
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0.0,
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G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class,
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PROP_MAX_SIZE,
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g_param_spec_double ("max_size",
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_("Max Size"),
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_("Maximum size of the ruler"),
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-G_MAXDOUBLE,
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G_MAXDOUBLE,
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0.0,
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G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class,
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PROP_SHOW_POSITION,
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g_param_spec_boolean ("show_position",
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_("Show Position"),
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_("Draw current ruler position"),
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TRUE,
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G_PARAM_READWRITE));
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}
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static void
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gtk_custom_ruler_init (GtkCustomRuler * ruler)
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{
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ruler->backing_store = NULL;
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ruler->non_gr_exp_gc = NULL;
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ruler->xsrc = 0;
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ruler->ysrc = 0;
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ruler->slider_size = 0;
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ruler->lower = 0;
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ruler->upper = 0;
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ruler->position = 0;
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ruler->max_size = 0;
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ruler->show_position = FALSE;
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gtk_custom_ruler_set_metric (ruler, NULL);
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}
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static void
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gtk_custom_ruler_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GtkCustomRuler *ruler = GTK_CUSTOM_RULER (object);
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switch (prop_id)
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{
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case PROP_LOWER:
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gtk_custom_ruler_set_range (ruler, g_value_get_double (value), ruler->upper,
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ruler->position, ruler->max_size);
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break;
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case PROP_UPPER:
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gtk_custom_ruler_set_range (ruler, ruler->lower, g_value_get_double (value),
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ruler->position, ruler->max_size);
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break;
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case PROP_POSITION:
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gtk_custom_ruler_set_range (ruler, ruler->lower, ruler->upper,
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g_value_get_double (value), ruler->max_size);
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break;
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case PROP_MAX_SIZE:
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gtk_custom_ruler_set_range (ruler, ruler->lower, ruler->upper,
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ruler->position, g_value_get_double (value));
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break;
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case PROP_SHOW_POSITION:
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gtk_custom_ruler_set_show_position (ruler, g_value_get_boolean (value));
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break;
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}
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}
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static void
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gtk_custom_ruler_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GtkCustomRuler *ruler = GTK_CUSTOM_RULER (object);
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switch (prop_id)
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{
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case PROP_LOWER:
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g_value_set_double (value, ruler->lower);
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break;
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case PROP_UPPER:
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g_value_set_double (value, ruler->upper);
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break;
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case PROP_POSITION:
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g_value_set_double (value, ruler->position);
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break;
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case PROP_MAX_SIZE:
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g_value_set_double (value, ruler->max_size);
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break;
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case PROP_SHOW_POSITION:
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g_value_set_boolean (value, ruler->show_position);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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void
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gtk_custom_ruler_set_metric (GtkCustomRuler * ruler, GtkCustomMetric * metric)
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{
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g_return_if_fail (ruler != NULL);
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g_return_if_fail (GTK_IS_CUSTOM_RULER (ruler));
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if (metric == NULL)
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ruler->metric = (GtkCustomMetric *) & default_metric;
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else
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ruler->metric = metric;
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if (GTK_WIDGET_DRAWABLE (ruler))
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gtk_widget_queue_draw (GTK_WIDGET (ruler));
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}
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void
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gtk_custom_ruler_set_range (GtkCustomRuler *ruler,
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gdouble lower,
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gdouble upper,
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gdouble position,
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gdouble max_size)
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{
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g_return_if_fail (GTK_IS_CUSTOM_RULER (ruler));
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g_object_freeze_notify (G_OBJECT (ruler));
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if (ruler->lower != lower)
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{
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ruler->lower = lower;
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g_object_notify (G_OBJECT (ruler), "lower");
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}
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if (ruler->upper != upper)
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{
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ruler->upper = upper;
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g_object_notify (G_OBJECT (ruler), "upper");
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}
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if (ruler->position != position)
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{
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ruler->position = position;
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g_object_notify (G_OBJECT (ruler), "position");
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}
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if (ruler->max_size != max_size)
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{
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ruler->max_size = max_size;
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g_object_notify (G_OBJECT (ruler), "max-size");
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}
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g_object_thaw_notify (G_OBJECT (ruler));
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if (GTK_WIDGET_DRAWABLE (ruler))
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gtk_widget_queue_draw (GTK_WIDGET (ruler));
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}
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/**
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* gtk_custom_ruler_get_range:
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* @ruler: a #GtkCustomRuler
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* @lower: location to store lower limit of the ruler, or %NULL
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* @upper: location to store upper limit of the ruler, or %NULL
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* @position: location to store the current position of the mark on the ruler, or %NULL
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* @max_size: location to store the maximum size of the ruler used when calculating
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* the space to leave for the text, or %NULL.
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*
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* Retrieves values indicating the range and current position of a #GtkCustomRuler.
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* See gtk_custom_ruler_set_range().
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**/
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void
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gtk_custom_ruler_get_range (GtkCustomRuler *ruler,
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gdouble *lower,
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gdouble *upper,
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gdouble *position,
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gdouble *max_size)
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{
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g_return_if_fail (GTK_IS_CUSTOM_RULER (ruler));
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if (lower)
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*lower = ruler->lower;
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if (upper)
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*upper = ruler->upper;
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if (position)
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*position = ruler->position;
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if (max_size)
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*max_size = ruler->max_size;
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}
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void
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gtk_custom_ruler_draw_ticks (GtkCustomRuler * ruler)
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{
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g_return_if_fail (GTK_IS_CUSTOM_RULER (ruler));
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if (GTK_CUSTOM_RULER_GET_CLASS (ruler)->draw_ticks)
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GTK_CUSTOM_RULER_GET_CLASS (ruler)->draw_ticks (ruler);
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}
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void
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gtk_custom_ruler_draw_pos (GtkCustomRuler * ruler)
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{
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g_return_if_fail (GTK_IS_CUSTOM_RULER (ruler));
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if (GTK_CUSTOM_RULER_GET_CLASS (ruler)->draw_pos && ruler->show_position)
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GTK_CUSTOM_RULER_GET_CLASS (ruler)->draw_pos (ruler);
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}
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static void
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gtk_custom_ruler_realize (GtkWidget * widget)
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{
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GtkCustomRuler *ruler;
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GdkWindowAttr attributes;
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gint attributes_mask;
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g_return_if_fail (widget != NULL);
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g_return_if_fail (GTK_IS_CUSTOM_RULER (widget));
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ruler = GTK_CUSTOM_RULER (widget);
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GTK_WIDGET_SET_FLAGS (ruler, GTK_REALIZED);
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attributes.window_type = GDK_WINDOW_CHILD;
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attributes.x = widget->allocation.x;
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attributes.y = widget->allocation.y;
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attributes.width = widget->allocation.width;
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attributes.height = widget->allocation.height;
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attributes.wclass = GDK_INPUT_OUTPUT;
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attributes.visual = gtk_widget_get_visual (widget);
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attributes.colormap = gtk_widget_get_colormap (widget);
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attributes.event_mask = gtk_widget_get_events (widget);
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attributes.event_mask |= (GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK);
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attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
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widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
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gdk_window_set_user_data (widget->window, ruler);
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widget->style = gtk_style_attach (widget->style, widget->window);
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gtk_style_set_background (widget->style, widget->window, GTK_STATE_ACTIVE);
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gtk_custom_ruler_make_pixmap (ruler);
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}
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static void
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gtk_custom_ruler_unrealize (GtkWidget *widget)
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{
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GtkCustomRuler *ruler = GTK_CUSTOM_RULER (widget);
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if (ruler->backing_store)
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g_object_unref (ruler->backing_store);
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if (ruler->non_gr_exp_gc)
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g_object_unref (ruler->non_gr_exp_gc);
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ruler->backing_store = NULL;
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ruler->non_gr_exp_gc = NULL;
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if (GTK_WIDGET_CLASS (parent_class)->unrealize)
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(* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
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}
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static void
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gtk_custom_ruler_size_allocate (GtkWidget *widget,
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GtkAllocation *allocation)
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{
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GtkCustomRuler *ruler = GTK_CUSTOM_RULER (widget);
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widget->allocation = *allocation;
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if (GTK_WIDGET_REALIZED (widget))
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{
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gdk_window_move_resize (widget->window,
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allocation->x, allocation->y,
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allocation->width, allocation->height);
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gtk_custom_ruler_make_pixmap (ruler);
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}
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}
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static gint
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gtk_custom_ruler_expose (GtkWidget * widget, GdkEventExpose * event)
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{
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GtkCustomRuler *ruler;
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g_return_val_if_fail (widget != NULL, FALSE);
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g_return_val_if_fail (GTK_IS_CUSTOM_RULER (widget), FALSE);
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g_return_val_if_fail (event != NULL, FALSE);
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if (GTK_WIDGET_DRAWABLE (widget)) {
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ruler = GTK_CUSTOM_RULER (widget);
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gtk_custom_ruler_draw_ticks (ruler);
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gdk_draw_pixmap (widget->window,
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ruler->non_gr_exp_gc,
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ruler->backing_store, 0, 0, 0, 0, widget->allocation.width, widget->allocation.height);
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gtk_custom_ruler_draw_pos (ruler);
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}
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return FALSE;
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}
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static void
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gtk_custom_ruler_make_pixmap (GtkCustomRuler *ruler)
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{
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GtkWidget *widget;
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gint width;
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gint height;
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widget = GTK_WIDGET (ruler);
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if (ruler->backing_store)
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{
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gdk_drawable_get_size (ruler->backing_store, &width, &height);
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if ((width == widget->allocation.width) &&
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(height == widget->allocation.height))
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return;
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g_object_unref (ruler->backing_store);
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}
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ruler->backing_store = gdk_pixmap_new (widget->window,
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widget->allocation.width,
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widget->allocation.height,
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-1);
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ruler->xsrc = 0;
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ruler->ysrc = 0;
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if (!ruler->non_gr_exp_gc)
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{
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ruler->non_gr_exp_gc = gdk_gc_new (widget->window);
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gdk_gc_set_exposures (ruler->non_gr_exp_gc, FALSE);
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}
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}
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void
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gtk_custom_ruler_set_show_position (GtkCustomRuler * ruler, gboolean yn)
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{
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ruler->show_position = yn;
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}
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