/* GTK - The GIMP Toolkit * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald * * 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 * Lesser 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. */ /* * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS * file for a list of people on the GTK+ Team. See the ChangeLog * files for a list of changes. These files are distributed with * GTK+ at ftp://ftp.gtk.org/pub/gtk/. */ #include "config.h" #include "gtkruler.h" #include "gtkprivate.h" #include "gtkintl.h" #include "gtkalias.h" enum { PROP_0, PROP_LOWER, PROP_UPPER, PROP_POSITION, PROP_MAX_SIZE, PROP_METRIC }; static void gtk_ruler_realize (GtkWidget *widget); static void gtk_ruler_unrealize (GtkWidget *widget); static void gtk_ruler_size_allocate (GtkWidget *widget, GtkAllocation *allocation); static gint gtk_ruler_expose (GtkWidget *widget, GdkEventExpose *event); static void gtk_ruler_make_pixmap (GtkRuler *ruler); static void gtk_ruler_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec); static void gtk_ruler_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec); static const GtkRulerMetric ruler_metrics[] = { { "Pixel", "Pi", 1.0, { 1, 2, 5, 10, 25, 50, 100, 250, 500, 1000 }, { 1, 5, 10, 50, 100 }}, { "Inches", "In", 72.0, { 1, 2, 4, 8, 16, 32, 64, 128, 256, 512 }, { 1, 2, 4, 8, 16 }}, { "Centimeters", "Cn", 28.35, { 1, 2, 5, 10, 25, 50, 100, 250, 500, 1000 }, { 1, 5, 10, 50, 100 }}, }; G_DEFINE_TYPE (GtkRuler, gtk_ruler, GTK_TYPE_WIDGET) static void gtk_ruler_class_init (GtkRulerClass *class) { GObjectClass *gobject_class; GtkWidgetClass *widget_class; gobject_class = G_OBJECT_CLASS (class); widget_class = (GtkWidgetClass*) class; gobject_class->set_property = gtk_ruler_set_property; gobject_class->get_property = gtk_ruler_get_property; widget_class->realize = gtk_ruler_realize; widget_class->unrealize = gtk_ruler_unrealize; widget_class->size_allocate = gtk_ruler_size_allocate; widget_class->expose_event = gtk_ruler_expose; class->draw_ticks = NULL; class->draw_pos = NULL; g_object_class_install_property (gobject_class, PROP_LOWER, g_param_spec_double ("lower", P_("Lower"), P_("Lower limit of ruler"), -G_MAXDOUBLE, G_MAXDOUBLE, 0.0, GTK_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_UPPER, g_param_spec_double ("upper", P_("Upper"), P_("Upper limit of ruler"), -G_MAXDOUBLE, G_MAXDOUBLE, 0.0, GTK_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_POSITION, g_param_spec_double ("position", P_("Position"), P_("Position of mark on the ruler"), -G_MAXDOUBLE, G_MAXDOUBLE, 0.0, GTK_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_MAX_SIZE, g_param_spec_double ("max-size", P_("Max Size"), P_("Maximum size of the ruler"), -G_MAXDOUBLE, G_MAXDOUBLE, 0.0, GTK_PARAM_READWRITE)); /** * GtkRuler:metric: * * The metric used for the ruler. * * Since: 2.8 */ g_object_class_install_property (gobject_class, PROP_METRIC, g_param_spec_enum ("metric", P_("Metric"), P_("The metric used for the ruler"), GTK_TYPE_METRIC_TYPE, GTK_PIXELS, GTK_PARAM_READWRITE)); } static void gtk_ruler_init (GtkRuler *ruler) { ruler->backing_store = NULL; ruler->xsrc = 0; ruler->ysrc = 0; ruler->slider_size = 0; ruler->lower = 0; ruler->upper = 0; ruler->position = 0; ruler->max_size = 0; gtk_ruler_set_metric (ruler, GTK_PIXELS); } static void gtk_ruler_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { GtkRuler *ruler = GTK_RULER (object); switch (prop_id) { case PROP_LOWER: gtk_ruler_set_range (ruler, g_value_get_double (value), ruler->upper, ruler->position, ruler->max_size); break; case PROP_UPPER: gtk_ruler_set_range (ruler, ruler->lower, g_value_get_double (value), ruler->position, ruler->max_size); break; case PROP_POSITION: gtk_ruler_set_range (ruler, ruler->lower, ruler->upper, g_value_get_double (value), ruler->max_size); break; case PROP_MAX_SIZE: gtk_ruler_set_range (ruler, ruler->lower, ruler->upper, ruler->position, g_value_get_double (value)); break; case PROP_METRIC: gtk_ruler_set_metric (ruler, g_value_get_enum (value)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gtk_ruler_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { GtkRuler *ruler = GTK_RULER (object); switch (prop_id) { case PROP_LOWER: g_value_set_double (value, ruler->lower); break; case PROP_UPPER: g_value_set_double (value, ruler->upper); break; case PROP_POSITION: g_value_set_double (value, ruler->position); break; case PROP_MAX_SIZE: g_value_set_double (value, ruler->max_size); break; case PROP_METRIC: g_value_set_enum (value, gtk_ruler_get_metric (ruler)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } void gtk_ruler_set_metric (GtkRuler *ruler, GtkMetricType metric) { g_return_if_fail (GTK_IS_RULER (ruler)); ruler->metric = (GtkRulerMetric *) &ruler_metrics[metric]; if (GTK_WIDGET_DRAWABLE (ruler)) gtk_widget_queue_draw (GTK_WIDGET (ruler)); g_object_notify (G_OBJECT (ruler), "metric"); } /** * gtk_ruler_get_metric: * @ruler: a #GtkRuler * * Gets the units used for a #GtkRuler. See gtk_ruler_set_metric(). * * Return value: the units currently used for @ruler **/ GtkMetricType gtk_ruler_get_metric (GtkRuler *ruler) { gint i; g_return_val_if_fail (GTK_IS_RULER (ruler), 0); for (i = 0; i < G_N_ELEMENTS (ruler_metrics); i++) if (ruler->metric == &ruler_metrics[i]) return i; g_assert_not_reached (); return 0; } /** * gtk_ruler_set_range: * @ruler: the gtkruler * @lower: the lower limit of the ruler * @upper: the upper limit of the ruler * @position: the mark on the ruler * @max_size: the maximum size of the ruler used when calculating the space to * leave for the text * * This sets the range of the ruler. */ void gtk_ruler_set_range (GtkRuler *ruler, gdouble lower, gdouble upper, gdouble position, gdouble max_size) { g_return_if_fail (GTK_IS_RULER (ruler)); g_object_freeze_notify (G_OBJECT (ruler)); if (ruler->lower != lower) { ruler->lower = lower; g_object_notify (G_OBJECT (ruler), "lower"); } if (ruler->upper != upper) { ruler->upper = upper; g_object_notify (G_OBJECT (ruler), "upper"); } if (ruler->position != position) { ruler->position = position; g_object_notify (G_OBJECT (ruler), "position"); } if (ruler->max_size != max_size) { ruler->max_size = max_size; g_object_notify (G_OBJECT (ruler), "max-size"); } g_object_thaw_notify (G_OBJECT (ruler)); if (GTK_WIDGET_DRAWABLE (ruler)) gtk_widget_queue_draw (GTK_WIDGET (ruler)); } /** * gtk_ruler_get_range: * @ruler: a #GtkRuler * @lower: location to store lower limit of the ruler, or %NULL * @upper: location to store upper limit of the ruler, or %NULL * @position: location to store the current position of the mark on the ruler, or %NULL * @max_size: location to store the maximum size of the ruler used when calculating * the space to leave for the text, or %NULL. * * Retrieves values indicating the range and current position of a #GtkRuler. * See gtk_ruler_set_range(). **/ void gtk_ruler_get_range (GtkRuler *ruler, gdouble *lower, gdouble *upper, gdouble *position, gdouble *max_size) { g_return_if_fail (GTK_IS_RULER (ruler)); if (lower) *lower = ruler->lower; if (upper) *upper = ruler->upper; if (position) *position = ruler->position; if (max_size) *max_size = ruler->max_size; } void gtk_ruler_draw_ticks (GtkRuler *ruler) { g_return_if_fail (GTK_IS_RULER (ruler)); if (GTK_RULER_GET_CLASS (ruler)->draw_ticks) GTK_RULER_GET_CLASS (ruler)->draw_ticks (ruler); } void gtk_ruler_draw_pos (GtkRuler *ruler) { g_return_if_fail (GTK_IS_RULER (ruler)); if (GTK_RULER_GET_CLASS (ruler)->draw_pos) GTK_RULER_GET_CLASS (ruler)->draw_pos (ruler); } static void gtk_ruler_realize (GtkWidget *widget) { GtkRuler *ruler; GdkWindowAttr attributes; gint attributes_mask; ruler = GTK_RULER (widget); GTK_WIDGET_SET_FLAGS (ruler, GTK_REALIZED); attributes.window_type = GDK_WINDOW_CHILD; attributes.x = widget->allocation.x; attributes.y = widget->allocation.y; attributes.width = widget->allocation.width; attributes.height = widget->allocation.height; attributes.wclass = GDK_INPUT_OUTPUT; attributes.visual = gtk_widget_get_visual (widget); attributes.colormap = gtk_widget_get_colormap (widget); attributes.event_mask = gtk_widget_get_events (widget); attributes.event_mask |= (GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK); attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP; widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask); gdk_window_set_user_data (widget->window, ruler); widget->style = gtk_style_attach (widget->style, widget->window); gtk_style_set_background (widget->style, widget->window, GTK_STATE_ACTIVE); gtk_ruler_make_pixmap (ruler); } static void gtk_ruler_unrealize (GtkWidget *widget) { GtkRuler *ruler = GTK_RULER (widget); if (ruler->backing_store) { g_object_unref (ruler->backing_store); ruler->backing_store = NULL; } if (ruler->non_gr_exp_gc) { g_object_unref (ruler->non_gr_exp_gc); ruler->non_gr_exp_gc = NULL; } GTK_WIDGET_CLASS (gtk_ruler_parent_class)->unrealize (widget); } static void gtk_ruler_size_allocate (GtkWidget *widget, GtkAllocation *allocation) { GtkRuler *ruler = GTK_RULER (widget); widget->allocation = *allocation; if (GTK_WIDGET_REALIZED (widget)) { gdk_window_move_resize (widget->window, allocation->x, allocation->y, allocation->width, allocation->height); gtk_ruler_make_pixmap (ruler); } } static gint gtk_ruler_expose (GtkWidget *widget, GdkEventExpose *event) { GtkRuler *ruler; if (GTK_WIDGET_DRAWABLE (widget)) { ruler = GTK_RULER (widget); gtk_ruler_draw_ticks (ruler); gdk_draw_drawable (widget->window, ruler->non_gr_exp_gc, ruler->backing_store, 0, 0, 0, 0, widget->allocation.width, widget->allocation.height); gtk_ruler_draw_pos (ruler); } return FALSE; } static void gtk_ruler_make_pixmap (GtkRuler *ruler) { GtkWidget *widget; gint width; gint height; widget = GTK_WIDGET (ruler); if (ruler->backing_store) { gdk_drawable_get_size (ruler->backing_store, &width, &height); if ((width == widget->allocation.width) && (height == widget->allocation.height)) return; g_object_unref (ruler->backing_store); } ruler->backing_store = gdk_pixmap_new (widget->window, widget->allocation.width, widget->allocation.height, -1); ruler->xsrc = 0; ruler->ysrc = 0; if (!ruler->non_gr_exp_gc) { ruler->non_gr_exp_gc = gdk_gc_new (widget->window); gdk_gc_set_exposures (ruler->non_gr_exp_gc, FALSE); } } #define __GTK_RULER_C__ #include "gtkaliasdef.c"