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)
68 static const GtkCustomMetric default_metric = {
70 default_metric_get_marks
73 static GtkWidgetClass *parent_class;
75 GType gtk_custom_ruler_get_type (void)
77 static GType ruler_type = 0;
81 static const GTypeInfo ruler_info =
83 sizeof (GtkCustomRulerClass),
84 (GBaseInitFunc) NULL, /* base_init */
85 (GBaseFinalizeFunc) NULL, /* base_finalize */
86 (GClassInitFunc) gtk_custom_ruler_class_init,
87 (GClassFinalizeFunc) NULL, /* class_finalize */
88 NULL, /* class_data */
89 sizeof (GtkCustomRuler),
91 (GInstanceInitFunc) gtk_custom_ruler_init,
92 NULL /* value_table */
95 ruler_type = g_type_register_static (GTK_TYPE_WIDGET, "GtkCustomRuler",
103 gtk_custom_ruler_class_init (GtkCustomRulerClass * class)
105 GObjectClass *gobject_class;
106 GtkWidgetClass *widget_class;
108 gobject_class = (GObjectClass *) class;
109 widget_class = (GtkWidgetClass*) class;
111 parent_class = g_type_class_peek_parent (class);
113 gobject_class->set_property = gtk_custom_ruler_set_property;
114 gobject_class->get_property = gtk_custom_ruler_get_property;
116 widget_class->realize = gtk_custom_ruler_realize;
117 widget_class->unrealize = gtk_custom_ruler_unrealize;
118 widget_class->size_allocate = gtk_custom_ruler_size_allocate;
119 widget_class->expose_event = gtk_custom_ruler_expose;
121 class->draw_ticks = NULL;
122 class->draw_pos = NULL;
124 g_object_class_install_property (gobject_class,
126 g_param_spec_double ("lower",
128 _("Lower limit of ruler"),
134 g_object_class_install_property (gobject_class,
136 g_param_spec_double ("upper",
138 _("Upper limit of ruler"),
144 g_object_class_install_property (gobject_class,
146 g_param_spec_double ("position",
148 _("Position of mark on the ruler"),
154 g_object_class_install_property (gobject_class,
156 g_param_spec_double ("max_size",
158 _("Maximum size of the ruler"),
164 g_object_class_install_property (gobject_class,
166 g_param_spec_boolean ("show_position",
168 _("Draw current ruler position"),
174 gtk_custom_ruler_init (GtkCustomRuler * ruler)
176 ruler->backing_store = NULL;
177 ruler->non_gr_exp_gc = NULL;
180 ruler->slider_size = 0;
185 ruler->show_position = FALSE;
187 gtk_custom_ruler_set_metric (ruler, NULL);
191 gtk_custom_ruler_set_property (GObject *object,
196 GtkCustomRuler *ruler = GTK_CUSTOM_RULER (object);
201 gtk_custom_ruler_set_range (ruler, g_value_get_double (value), ruler->upper,
202 ruler->position, ruler->max_size);
205 gtk_custom_ruler_set_range (ruler, ruler->lower, g_value_get_double (value),
206 ruler->position, ruler->max_size);
209 gtk_custom_ruler_set_range (ruler, ruler->lower, ruler->upper,
210 g_value_get_double (value), ruler->max_size);
213 gtk_custom_ruler_set_range (ruler, ruler->lower, ruler->upper,
214 ruler->position, g_value_get_double (value));
216 case PROP_SHOW_POSITION:
217 gtk_custom_ruler_set_show_position (ruler, g_value_get_boolean (value));
223 gtk_custom_ruler_get_property (GObject *object,
228 GtkCustomRuler *ruler = GTK_CUSTOM_RULER (object);
233 g_value_set_double (value, ruler->lower);
236 g_value_set_double (value, ruler->upper);
239 g_value_set_double (value, ruler->position);
242 g_value_set_double (value, ruler->max_size);
244 case PROP_SHOW_POSITION:
245 g_value_set_boolean (value, ruler->show_position);
248 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
254 gtk_custom_ruler_set_metric (GtkCustomRuler * ruler, GtkCustomMetric * metric)
256 g_return_if_fail (ruler != NULL);
257 g_return_if_fail (GTK_IS_CUSTOM_RULER (ruler));
260 ruler->metric = (GtkCustomMetric *) & default_metric;
262 ruler->metric = metric;
264 if (GTK_WIDGET_DRAWABLE (ruler))
265 gtk_widget_queue_draw (GTK_WIDGET (ruler));
269 gtk_custom_ruler_set_range (GtkCustomRuler *ruler,
275 g_return_if_fail (GTK_IS_CUSTOM_RULER (ruler));
277 g_object_freeze_notify (G_OBJECT (ruler));
278 if (ruler->lower != lower)
280 ruler->lower = lower;
281 g_object_notify (G_OBJECT (ruler), "lower");
283 if (ruler->upper != upper)
285 ruler->upper = upper;
286 g_object_notify (G_OBJECT (ruler), "upper");
288 if (ruler->position != position)
290 ruler->position = position;
291 g_object_notify (G_OBJECT (ruler), "position");
293 if (ruler->max_size != max_size)
295 ruler->max_size = max_size;
296 g_object_notify (G_OBJECT (ruler), "max-size");
298 g_object_thaw_notify (G_OBJECT (ruler));
300 if (GTK_WIDGET_DRAWABLE (ruler))
301 gtk_widget_queue_draw (GTK_WIDGET (ruler));
305 * gtk_custom_ruler_get_range:
306 * @ruler: a #GtkCustomRuler
307 * @lower: location to store lower limit of the ruler, or %NULL
308 * @upper: location to store upper limit of the ruler, or %NULL
309 * @position: location to store the current position of the mark on the ruler, or %NULL
310 * @max_size: location to store the maximum size of the ruler used when calculating
311 * the space to leave for the text, or %NULL.
313 * Retrieves values indicating the range and current position of a #GtkCustomRuler.
314 * See gtk_custom_ruler_set_range().
317 gtk_custom_ruler_get_range (GtkCustomRuler *ruler,
323 g_return_if_fail (GTK_IS_CUSTOM_RULER (ruler));
326 *lower = ruler->lower;
328 *upper = ruler->upper;
330 *position = ruler->position;
332 *max_size = ruler->max_size;
336 gtk_custom_ruler_draw_ticks (GtkCustomRuler * ruler)
338 g_return_if_fail (GTK_IS_CUSTOM_RULER (ruler));
340 if (GTK_CUSTOM_RULER_GET_CLASS (ruler)->draw_ticks)
341 GTK_CUSTOM_RULER_GET_CLASS (ruler)->draw_ticks (ruler);
346 gtk_custom_ruler_draw_pos (GtkCustomRuler * ruler)
348 g_return_if_fail (GTK_IS_CUSTOM_RULER (ruler));
350 if (GTK_CUSTOM_RULER_GET_CLASS (ruler)->draw_pos && ruler->show_position)
351 GTK_CUSTOM_RULER_GET_CLASS (ruler)->draw_pos (ruler);
355 gtk_custom_ruler_realize (GtkWidget * widget)
357 GtkCustomRuler *ruler;
358 GdkWindowAttr attributes;
359 gint attributes_mask;
361 g_return_if_fail (widget != NULL);
362 g_return_if_fail (GTK_IS_CUSTOM_RULER (widget));
364 ruler = GTK_CUSTOM_RULER (widget);
365 GTK_WIDGET_SET_FLAGS (ruler, GTK_REALIZED);
367 attributes.window_type = GDK_WINDOW_CHILD;
368 attributes.x = widget->allocation.x;
369 attributes.y = widget->allocation.y;
370 attributes.width = widget->allocation.width;
371 attributes.height = widget->allocation.height;
372 attributes.wclass = GDK_INPUT_OUTPUT;
373 attributes.visual = gtk_widget_get_visual (widget);
374 attributes.colormap = gtk_widget_get_colormap (widget);
375 attributes.event_mask = gtk_widget_get_events (widget);
376 attributes.event_mask |= (GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK);
378 attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
380 widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
381 gdk_window_set_user_data (widget->window, ruler);
383 widget->style = gtk_style_attach (widget->style, widget->window);
384 gtk_style_set_background (widget->style, widget->window, GTK_STATE_ACTIVE);
386 gtk_custom_ruler_make_pixmap (ruler);
390 gtk_custom_ruler_unrealize (GtkWidget *widget)
392 GtkCustomRuler *ruler = GTK_CUSTOM_RULER (widget);
394 if (ruler->backing_store)
395 g_object_unref (ruler->backing_store);
396 if (ruler->non_gr_exp_gc)
397 g_object_unref (ruler->non_gr_exp_gc);
399 ruler->backing_store = NULL;
400 ruler->non_gr_exp_gc = NULL;
402 if (GTK_WIDGET_CLASS (parent_class)->unrealize)
403 (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
407 gtk_custom_ruler_size_allocate (GtkWidget *widget,
408 GtkAllocation *allocation)
410 GtkCustomRuler *ruler = GTK_CUSTOM_RULER (widget);
412 widget->allocation = *allocation;
414 if (GTK_WIDGET_REALIZED (widget))
416 gdk_window_move_resize (widget->window,
417 allocation->x, allocation->y,
418 allocation->width, allocation->height);
420 gtk_custom_ruler_make_pixmap (ruler);
425 gtk_custom_ruler_expose (GtkWidget * widget, GdkEventExpose * event)
427 GtkCustomRuler *ruler;
429 g_return_val_if_fail (widget != NULL, FALSE);
430 g_return_val_if_fail (GTK_IS_CUSTOM_RULER (widget), FALSE);
431 g_return_val_if_fail (event != NULL, FALSE);
433 if (GTK_WIDGET_DRAWABLE (widget)) {
434 ruler = GTK_CUSTOM_RULER (widget);
436 gtk_custom_ruler_draw_ticks (ruler);
438 gdk_draw_pixmap (widget->window,
439 ruler->non_gr_exp_gc,
440 ruler->backing_store, 0, 0, 0, 0, widget->allocation.width, widget->allocation.height);
442 gtk_custom_ruler_draw_pos (ruler);
450 gtk_custom_ruler_make_pixmap (GtkCustomRuler *ruler)
456 widget = GTK_WIDGET (ruler);
458 if (ruler->backing_store)
460 gdk_drawable_get_size (ruler->backing_store, &width, &height);
461 if ((width == widget->allocation.width) &&
462 (height == widget->allocation.height))
465 g_object_unref (ruler->backing_store);
468 ruler->backing_store = gdk_pixmap_new (widget->window,
469 widget->allocation.width,
470 widget->allocation.height,
476 if (!ruler->non_gr_exp_gc)
478 ruler->non_gr_exp_gc = gdk_gc_new (widget->window);
479 gdk_gc_set_exposures (ruler->non_gr_exp_gc, FALSE);
484 gtk_custom_ruler_set_show_position (GtkCustomRuler * ruler, gboolean yn)
486 ruler->show_position = yn;