1 /* GTK - The GIMP Toolkit
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
21 * Modified by the GTK+ Team and others 1997-1999. See the AUTHORS
22 * file for a list of people on the GTK+ Team. See the ChangeLog
23 * files for a list of changes. These files are distributed with
24 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
27 /* modified by andreas meyer <hexx3000@gmx.de> */
31 #define _(Text) dgettext (PACKAGE,Text)
33 #include "gtk-custom-ruler.h"
45 static void gtk_custom_ruler_class_init (GtkCustomRulerClass * klass);
46 static void gtk_custom_ruler_init (GtkCustomRuler * ruler);
47 static void gtk_custom_ruler_realize (GtkWidget * widget);
48 static void gtk_custom_ruler_unrealize (GtkWidget * widget);
49 static void gtk_custom_ruler_size_allocate (GtkWidget * widget, GtkAllocation * allocation);
50 static gint gtk_custom_ruler_expose (GtkWidget * widget, GdkEventExpose * event);
51 static void gtk_custom_ruler_make_pixmap (GtkCustomRuler * ruler);
52 static void gtk_custom_ruler_set_property (GObject *object,
56 static void gtk_custom_ruler_get_property (GObject *object,
63 default_metric_get_marks (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
73 static const GtkCustomMetric default_metric = {
75 default_metric_get_marks
78 static GtkWidgetClass *parent_class;
80 GType gtk_custom_ruler_get_type (void)
82 static GType ruler_type = 0;
86 static const GTypeInfo ruler_info =
88 sizeof (GtkCustomRulerClass),
89 (GBaseInitFunc) NULL, /* base_init */
90 (GBaseFinalizeFunc) NULL, /* base_finalize */
91 (GClassInitFunc) gtk_custom_ruler_class_init,
92 (GClassFinalizeFunc) NULL, /* class_finalize */
93 NULL, /* class_data */
94 sizeof (GtkCustomRuler),
96 (GInstanceInitFunc) gtk_custom_ruler_init,
97 NULL /* value_table */
100 ruler_type = g_type_register_static (GTK_TYPE_WIDGET, "GtkCustomRuler",
101 &ruler_info, (GTypeFlags)0);
108 gtk_custom_ruler_class_init (GtkCustomRulerClass * class)
110 GObjectClass *gobject_class;
111 GtkWidgetClass *widget_class;
113 gobject_class = (GObjectClass *) class;
114 widget_class = (GtkWidgetClass*) class;
116 parent_class = g_type_class_peek_parent (class);
118 gobject_class->set_property = gtk_custom_ruler_set_property;
119 gobject_class->get_property = gtk_custom_ruler_get_property;
121 widget_class->realize = gtk_custom_ruler_realize;
122 widget_class->unrealize = gtk_custom_ruler_unrealize;
123 widget_class->size_allocate = gtk_custom_ruler_size_allocate;
124 widget_class->expose_event = gtk_custom_ruler_expose;
126 class->draw_ticks = NULL;
127 class->draw_pos = NULL;
129 g_object_class_install_property (gobject_class,
131 g_param_spec_double ("lower",
133 _("Lower limit of ruler"),
139 g_object_class_install_property (gobject_class,
141 g_param_spec_double ("upper",
143 _("Upper limit of ruler"),
149 g_object_class_install_property (gobject_class,
151 g_param_spec_double ("position",
153 _("Position of mark on the ruler"),
159 g_object_class_install_property (gobject_class,
161 g_param_spec_double ("max_size",
163 _("Maximum size of the ruler"),
169 g_object_class_install_property (gobject_class,
171 g_param_spec_boolean ("show_position",
173 _("Draw current ruler position"),
179 gtk_custom_ruler_init (GtkCustomRuler * ruler)
181 ruler->backing_store = NULL;
182 ruler->non_gr_exp_gc = NULL;
185 ruler->slider_size = 0;
190 ruler->show_position = FALSE;
192 gtk_custom_ruler_set_metric (ruler, NULL);
196 gtk_custom_ruler_set_property (GObject *object,
201 GtkCustomRuler *ruler = GTK_CUSTOM_RULER (object);
207 gtk_custom_ruler_set_range (ruler, g_value_get_double (value), ruler->upper,
208 ruler->position, ruler->max_size);
211 gtk_custom_ruler_set_range (ruler, ruler->lower, g_value_get_double (value),
212 ruler->position, ruler->max_size);
215 gtk_custom_ruler_set_range (ruler, ruler->lower, ruler->upper,
216 g_value_get_double (value), ruler->max_size);
219 gtk_custom_ruler_set_range (ruler, ruler->lower, ruler->upper,
220 ruler->position, g_value_get_double (value));
222 case PROP_SHOW_POSITION:
223 gtk_custom_ruler_set_show_position (ruler, g_value_get_boolean (value));
229 gtk_custom_ruler_get_property (GObject *object,
234 GtkCustomRuler *ruler = GTK_CUSTOM_RULER (object);
239 g_value_set_double (value, ruler->lower);
242 g_value_set_double (value, ruler->upper);
245 g_value_set_double (value, ruler->position);
248 g_value_set_double (value, ruler->max_size);
250 case PROP_SHOW_POSITION:
251 g_value_set_boolean (value, ruler->show_position);
254 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
260 gtk_custom_ruler_set_metric (GtkCustomRuler * ruler, GtkCustomMetric * metric)
262 g_return_if_fail (ruler != NULL);
263 g_return_if_fail (GTK_IS_CUSTOM_RULER (ruler));
266 ruler->metric = (GtkCustomMetric *) & default_metric;
268 ruler->metric = metric;
270 if (GTK_WIDGET_DRAWABLE (ruler))
271 gtk_widget_queue_draw (GTK_WIDGET (ruler));
275 gtk_custom_ruler_set_range (GtkCustomRuler *ruler,
281 g_return_if_fail (GTK_IS_CUSTOM_RULER (ruler));
283 g_object_freeze_notify (G_OBJECT (ruler));
284 if (ruler->lower != lower)
286 ruler->lower = lower;
287 g_object_notify (G_OBJECT (ruler), "lower");
289 if (ruler->upper != upper)
291 ruler->upper = upper;
292 g_object_notify (G_OBJECT (ruler), "upper");
294 if (ruler->position != position)
296 ruler->position = position;
297 g_object_notify (G_OBJECT (ruler), "position");
299 if (ruler->max_size != max_size)
301 ruler->max_size = max_size;
302 g_object_notify (G_OBJECT (ruler), "max-size");
304 g_object_thaw_notify (G_OBJECT (ruler));
306 if (GTK_WIDGET_DRAWABLE (ruler))
307 gtk_widget_queue_draw (GTK_WIDGET (ruler));
311 * gtk_custom_ruler_get_range:
312 * @ruler: a #GtkCustomRuler
313 * @lower: location to store lower limit of the ruler, or %NULL
314 * @upper: location to store upper limit of the ruler, or %NULL
315 * @position: location to store the current position of the mark on the ruler, or %NULL
316 * @max_size: location to store the maximum size of the ruler used when calculating
317 * the space to leave for the text, or %NULL.
319 * Retrieves values indicating the range and current position of a #GtkCustomRuler.
320 * See gtk_custom_ruler_set_range().
323 gtk_custom_ruler_get_range (GtkCustomRuler *ruler,
329 g_return_if_fail (GTK_IS_CUSTOM_RULER (ruler));
332 *lower = ruler->lower;
334 *upper = ruler->upper;
336 *position = ruler->position;
338 *max_size = ruler->max_size;
342 gtk_custom_ruler_draw_ticks (GtkCustomRuler * ruler)
344 g_return_if_fail (GTK_IS_CUSTOM_RULER (ruler));
346 if (GTK_CUSTOM_RULER_GET_CLASS (ruler)->draw_ticks)
347 GTK_CUSTOM_RULER_GET_CLASS (ruler)->draw_ticks (ruler);
352 gtk_custom_ruler_draw_pos (GtkCustomRuler * ruler)
354 g_return_if_fail (GTK_IS_CUSTOM_RULER (ruler));
356 if (GTK_CUSTOM_RULER_GET_CLASS (ruler)->draw_pos && ruler->show_position)
357 GTK_CUSTOM_RULER_GET_CLASS (ruler)->draw_pos (ruler);
361 gtk_custom_ruler_realize (GtkWidget * widget)
363 GtkCustomRuler *ruler;
364 GdkWindowAttr attributes;
365 gint attributes_mask;
367 g_return_if_fail (widget != NULL);
368 g_return_if_fail (GTK_IS_CUSTOM_RULER (widget));
370 ruler = GTK_CUSTOM_RULER (widget);
371 GTK_WIDGET_SET_FLAGS (ruler, GTK_REALIZED);
373 attributes.window_type = GDK_WINDOW_CHILD;
374 attributes.x = widget->allocation.x;
375 attributes.y = widget->allocation.y;
376 attributes.width = widget->allocation.width;
377 attributes.height = widget->allocation.height;
378 attributes.wclass = GDK_INPUT_OUTPUT;
379 attributes.visual = gtk_widget_get_visual (widget);
380 attributes.colormap = gtk_widget_get_colormap (widget);
381 attributes.event_mask = gtk_widget_get_events (widget);
382 attributes.event_mask |= (GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK);
384 attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
386 widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
387 gdk_window_set_user_data (widget->window, ruler);
389 widget->style = gtk_style_attach (widget->style, widget->window);
390 gtk_style_set_background (widget->style, widget->window, GTK_STATE_ACTIVE);
392 gtk_custom_ruler_make_pixmap (ruler);
396 gtk_custom_ruler_unrealize (GtkWidget *widget)
398 GtkCustomRuler *ruler = GTK_CUSTOM_RULER (widget);
400 if (ruler->backing_store)
401 g_object_unref (ruler->backing_store);
402 if (ruler->non_gr_exp_gc)
403 g_object_unref (ruler->non_gr_exp_gc);
405 ruler->backing_store = NULL;
406 ruler->non_gr_exp_gc = NULL;
408 if (GTK_WIDGET_CLASS (parent_class)->unrealize)
409 (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
413 gtk_custom_ruler_size_allocate (GtkWidget *widget,
414 GtkAllocation *allocation)
416 GtkCustomRuler *ruler = GTK_CUSTOM_RULER (widget);
418 widget->allocation = *allocation;
420 if (GTK_WIDGET_REALIZED (widget))
422 gdk_window_move_resize (widget->window,
423 allocation->x, allocation->y,
424 allocation->width, allocation->height);
426 gtk_custom_ruler_make_pixmap (ruler);
431 gtk_custom_ruler_expose (GtkWidget * widget, GdkEventExpose * event)
433 GtkCustomRuler *ruler;
435 g_return_val_if_fail (widget != NULL, FALSE);
436 g_return_val_if_fail (GTK_IS_CUSTOM_RULER (widget), FALSE);
437 g_return_val_if_fail (event != NULL, FALSE);
439 if (GTK_WIDGET_DRAWABLE (widget)) {
440 ruler = GTK_CUSTOM_RULER (widget);
442 gtk_custom_ruler_draw_ticks (ruler);
444 gdk_draw_drawable (widget->window,
445 ruler->non_gr_exp_gc,
446 GDK_DRAWABLE(ruler->backing_store), 0, 0, 0, 0, widget->allocation.width, widget->allocation.height);
448 gtk_custom_ruler_draw_pos (ruler);
456 gtk_custom_ruler_make_pixmap (GtkCustomRuler *ruler)
462 widget = GTK_WIDGET (ruler);
464 if (ruler->backing_store)
466 gdk_drawable_get_size (ruler->backing_store, &width, &height);
467 if ((width == widget->allocation.width) &&
468 (height == widget->allocation.height))
471 g_object_unref (ruler->backing_store);
474 ruler->backing_store = gdk_pixmap_new (widget->window,
475 widget->allocation.width,
476 widget->allocation.height,
482 if (!ruler->non_gr_exp_gc)
484 ruler->non_gr_exp_gc = gdk_gc_new (widget->window);
485 gdk_gc_set_exposures (ruler->non_gr_exp_gc, FALSE);
490 gtk_custom_ruler_set_show_position (GtkCustomRuler * ruler, gboolean yn)
492 ruler->show_position = yn;