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/.
28 #include "gtkvscale.h"
29 #include "gtksignal.h"
30 #include "gdk/gdkkeysyms.h"
33 #define SCALE_CLASS(w) GTK_SCALE_CLASS (GTK_OBJECT (w)->klass)
34 #define RANGE_CLASS(w) GTK_RANGE_CLASS (GTK_OBJECT (w)->klass)
41 static void gtk_vscale_class_init (GtkVScaleClass *klass);
42 static void gtk_vscale_init (GtkVScale *vscale);
43 static void gtk_vscale_set_arg (GtkObject *object,
46 static void gtk_vscale_get_arg (GtkObject *object,
49 static void gtk_vscale_realize (GtkWidget *widget);
50 static void gtk_vscale_size_request (GtkWidget *widget,
51 GtkRequisition *requisition);
52 static void gtk_vscale_size_allocate (GtkWidget *widget,
53 GtkAllocation *allocation);
54 static void gtk_vscale_pos_trough (GtkVScale *vscale,
59 static void gtk_vscale_pos_background (GtkVScale *vscale,
64 static void gtk_vscale_draw_slider (GtkRange *range);
65 static void gtk_vscale_draw_value (GtkScale *scale);
66 static void gtk_vscale_draw (GtkWidget *widget,
68 static gint gtk_vscale_trough_keys (GtkRange *range,
70 GtkScrollType *scroll,
72 static void gtk_vscale_clear_background (GtkRange *range);
75 gtk_vscale_get_type (void)
77 static GtkType vscale_type = 0;
81 static const GtkTypeInfo vscale_info =
85 sizeof (GtkVScaleClass),
86 (GtkClassInitFunc) gtk_vscale_class_init,
87 (GtkObjectInitFunc) gtk_vscale_init,
88 /* reserved_1 */ NULL,
89 /* reserved_2 */ NULL,
90 (GtkClassInitFunc) NULL,
93 vscale_type = gtk_type_unique (GTK_TYPE_SCALE, &vscale_info);
100 gtk_vscale_class_init (GtkVScaleClass *class)
102 GtkObjectClass *object_class;
103 GtkWidgetClass *widget_class;
104 GtkRangeClass *range_class;
105 GtkScaleClass *scale_class;
107 object_class = (GtkObjectClass*) class;
108 widget_class = (GtkWidgetClass*) class;
109 range_class = (GtkRangeClass*) class;
110 scale_class = (GtkScaleClass*) class;
112 gtk_object_add_arg_type ("GtkVScale::adjustment",
114 GTK_ARG_READWRITE | GTK_ARG_CONSTRUCT,
117 object_class->set_arg = gtk_vscale_set_arg;
118 object_class->get_arg = gtk_vscale_get_arg;
120 widget_class->realize = gtk_vscale_realize;
121 widget_class->size_request = gtk_vscale_size_request;
122 widget_class->size_allocate = gtk_vscale_size_allocate;
123 widget_class->draw = gtk_vscale_draw;
125 range_class->slider_update = gtk_range_default_vslider_update;
126 range_class->trough_click = gtk_range_default_vtrough_click;
127 range_class->motion = gtk_range_default_vmotion;
128 range_class->draw_slider = gtk_vscale_draw_slider;
129 range_class->trough_keys = gtk_vscale_trough_keys;
130 range_class->clear_background = gtk_vscale_clear_background;
132 scale_class->draw_value = gtk_vscale_draw_value;
136 gtk_vscale_set_arg (GtkObject *object,
142 vscale = GTK_VSCALE (object);
147 gtk_range_set_adjustment (GTK_RANGE (vscale), GTK_VALUE_POINTER (*arg));
155 gtk_vscale_get_arg (GtkObject *object,
161 vscale = GTK_VSCALE (object);
166 GTK_VALUE_POINTER (*arg) = GTK_RANGE (vscale);
169 arg->type = GTK_TYPE_INVALID;
175 gtk_vscale_init (GtkVScale *vscale)
177 GTK_WIDGET_SET_FLAGS (vscale, GTK_NO_WINDOW);
181 gtk_vscale_new (GtkAdjustment *adjustment)
185 vscale = gtk_widget_new (GTK_TYPE_VSCALE,
186 "adjustment", adjustment,
194 gtk_vscale_realize (GtkWidget *widget)
197 GdkWindowAttr attributes;
198 gint attributes_mask;
201 g_return_if_fail (widget != NULL);
202 g_return_if_fail (GTK_IS_VSCALE (widget));
204 GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
205 range = GTK_RANGE (widget);
207 widget->window = gtk_widget_get_parent_window (widget);
208 gdk_window_ref (widget->window);
210 gtk_vscale_pos_trough (GTK_VSCALE (widget), &x, &y, &w, &h);
214 attributes.width = w;
215 attributes.height = h;
216 attributes.wclass = GDK_INPUT_OUTPUT;
217 attributes.window_type = GDK_WINDOW_CHILD;
219 attributes.event_mask = gtk_widget_get_events (widget) |
221 GDK_BUTTON_PRESS_MASK |
222 GDK_BUTTON_RELEASE_MASK |
223 GDK_ENTER_NOTIFY_MASK |
224 GDK_LEAVE_NOTIFY_MASK);
225 attributes.visual = gtk_widget_get_visual (widget);
226 attributes.colormap = gtk_widget_get_colormap (widget);
228 attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
230 range->trough = gdk_window_new (widget->window, &attributes, attributes_mask);
232 attributes.width = RANGE_CLASS (range)->slider_width;
233 attributes.height = SCALE_CLASS (range)->slider_length;
234 attributes.event_mask |= (GDK_BUTTON_MOTION_MASK |
235 GDK_POINTER_MOTION_HINT_MASK);
237 range->slider = gdk_window_new (range->trough, &attributes, attributes_mask);
239 widget->style = gtk_style_attach (widget->style, widget->window);
241 gdk_window_set_user_data (range->trough, widget);
242 gdk_window_set_user_data (range->slider, widget);
244 gtk_style_set_background (widget->style, range->trough, GTK_STATE_ACTIVE);
245 gtk_style_set_background (widget->style, range->slider, GTK_STATE_NORMAL);
247 gtk_range_slider_update (GTK_RANGE (widget));
249 gdk_window_show (range->slider);
253 gtk_vscale_draw (GtkWidget *widget,
257 GdkRectangle tmp_area;
258 GdkRectangle child_area;
259 gint x, y, width, height;
261 g_return_if_fail (widget != NULL);
262 g_return_if_fail (GTK_IS_RANGE (widget));
263 g_return_if_fail (area != NULL);
265 if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_MAPPED (widget))
267 range = GTK_RANGE (widget);
269 gtk_vscale_pos_background (GTK_VSCALE (widget), &x, &y, &width, &height);
273 tmp_area.width = width;
274 tmp_area.height = height;
276 if (gdk_rectangle_intersect (area, &tmp_area, &child_area))
277 gtk_range_draw_background (range);
279 gtk_vscale_pos_trough (GTK_VSCALE (widget), &x, &y, &width, &height);
283 tmp_area.width = width;
284 tmp_area.height = height;
286 if (gdk_rectangle_intersect (area, &tmp_area, &child_area))
288 gtk_range_draw_trough (range);
289 gtk_range_draw_slider (range);
290 gtk_range_draw_step_forw (range);
291 gtk_range_draw_step_back (range);
297 gtk_vscale_clear_background (GtkRange *range)
301 gint x, y, width, height;
303 g_return_if_fail (range != NULL);
304 g_return_if_fail (GTK_IS_SCALE (range));
306 widget = GTK_WIDGET (range);
307 scale = GTK_SCALE (range);
309 gtk_vscale_pos_background (GTK_VSCALE (widget), &x, &y, &width, &height);
311 gtk_widget_queue_clear_area (GTK_WIDGET (range),
312 x, y, width, height);
316 gtk_vscale_size_request (GtkWidget *widget,
317 GtkRequisition *requisition)
322 g_return_if_fail (widget != NULL);
323 g_return_if_fail (GTK_IS_VSCALE (widget));
324 g_return_if_fail (requisition != NULL);
326 scale = GTK_SCALE (widget);
328 requisition->width = (RANGE_CLASS (scale)->slider_width +
329 widget->style->klass->ythickness * 2);
330 requisition->height = (SCALE_CLASS (scale)->slider_length +
331 widget->style->klass->xthickness) * 2;
333 if (scale->draw_value)
335 value_width = gtk_scale_get_value_width (scale);
337 if ((scale->value_pos == GTK_POS_LEFT) ||
338 (scale->value_pos == GTK_POS_RIGHT))
340 requisition->width += value_width + SCALE_CLASS (scale)->value_spacing;
341 if (requisition->height < (widget->style->font->ascent + widget->style->font->descent))
342 requisition->height = widget->style->font->ascent + widget->style->font->descent;
344 else if ((scale->value_pos == GTK_POS_TOP) ||
345 (scale->value_pos == GTK_POS_BOTTOM))
347 if (requisition->width < value_width)
348 requisition->width = value_width;
349 requisition->height += widget->style->font->ascent + widget->style->font->descent;
355 gtk_vscale_size_allocate (GtkWidget *widget,
356 GtkAllocation *allocation)
363 g_return_if_fail (widget != NULL);
364 g_return_if_fail (GTK_IS_VSCALE (widget));
365 g_return_if_fail (allocation != NULL);
367 widget->allocation = *allocation;
368 if (GTK_WIDGET_REALIZED (widget))
370 range = GTK_RANGE (widget);
371 scale = GTK_SCALE (widget);
373 gtk_vscale_pos_trough (GTK_VSCALE (widget), &x, &y, &width, &height);
375 gdk_window_move_resize (range->trough, x, y, width, height);
376 gtk_range_slider_update (GTK_RANGE (widget));
381 gtk_vscale_pos_trough (GtkVScale *vscale,
390 g_return_if_fail (vscale != NULL);
391 g_return_if_fail (GTK_IS_VSCALE (vscale));
392 g_return_if_fail ((x != NULL) && (y != NULL) && (w != NULL) && (h != NULL));
394 widget = GTK_WIDGET (vscale);
395 scale = GTK_SCALE (vscale);
397 *w = (RANGE_CLASS (scale)->slider_width +
398 widget->style->klass->xthickness * 2);
399 *h = widget->allocation.height;
401 if (scale->draw_value)
406 switch (scale->value_pos)
409 *x = (gtk_scale_get_value_width (scale) + SCALE_CLASS (scale)->value_spacing +
410 (widget->allocation.width - widget->requisition.width) / 2);
413 *x = (widget->allocation.width - widget->requisition.width) / 2;
416 *x = (widget->allocation.width - *w) / 2;
417 *y = widget->style->font->ascent + widget->style->font->descent;
421 *x = (widget->allocation.width - *w) / 2;
422 *h -= widget->style->font->ascent + widget->style->font->descent;
428 *x = (widget->allocation.width - *w) / 2;
434 *x += widget->allocation.x;
435 *y += widget->allocation.y;
439 gtk_vscale_pos_background (GtkVScale *vscale,
448 gint tx, ty, twidth, theight;
450 g_return_if_fail (vscale != NULL);
451 g_return_if_fail (GTK_IS_VSCALE (vscale));
452 g_return_if_fail ((x != NULL) && (y != NULL) && (w != NULL) && (h != NULL));
454 gtk_vscale_pos_trough (vscale, &tx, &ty, &twidth, &theight);
456 widget = GTK_WIDGET (vscale);
457 scale = GTK_SCALE (vscale);
459 *x = widget->allocation.x;
460 *y = widget->allocation.y;
461 *w = widget->allocation.width;
462 *h = widget->allocation.height;
464 switch (scale->value_pos)
484 gtk_vscale_draw_slider (GtkRange *range)
486 GtkStateType state_type;
488 g_return_if_fail (range != NULL);
489 g_return_if_fail (GTK_IS_VSCALE (range));
493 if ((range->in_child == RANGE_CLASS (range)->slider) ||
494 (range->click_child == RANGE_CLASS (range)->slider))
495 state_type = GTK_STATE_PRELIGHT;
497 state_type = GTK_STATE_NORMAL;
499 gtk_paint_slider (GTK_WIDGET (range)->style, range->slider, state_type,
501 NULL, GTK_WIDGET (range), "vscale",
503 GTK_ORIENTATION_VERTICAL);
508 gtk_vscale_draw_value (GtkScale *scale)
510 GtkStateType state_type;
517 g_return_if_fail (scale != NULL);
518 g_return_if_fail (GTK_IS_VSCALE (scale));
520 widget = GTK_WIDGET (scale);
522 if (scale->draw_value)
524 sprintf (buffer, "%0.*f", GTK_RANGE (scale)->digits, GTK_RANGE (scale)->adjustment->value);
525 text_width = gdk_string_measure (GTK_WIDGET (scale)->style->font, buffer);
527 switch (scale->value_pos)
530 gdk_window_get_position (GTK_RANGE (scale)->trough, &x, NULL);
531 gdk_window_get_position (GTK_RANGE (scale)->slider, NULL, &y);
532 gdk_window_get_size (GTK_RANGE (scale)->trough, &width, NULL);
533 gdk_window_get_size (GTK_RANGE (scale)->slider, NULL, &height);
535 x -= SCALE_CLASS (scale)->value_spacing + text_width;
536 y += widget->allocation.y + ((height -
537 (GTK_WIDGET (scale)->style->font->ascent +
538 GTK_WIDGET (scale)->style->font->descent)) / 2 +
539 GTK_WIDGET (scale)->style->font->ascent);
542 gdk_window_get_position (GTK_RANGE (scale)->trough, &x, NULL);
543 gdk_window_get_position (GTK_RANGE (scale)->slider, NULL, &y);
544 gdk_window_get_size (GTK_RANGE (scale)->trough, &width, NULL);
545 gdk_window_get_size (GTK_RANGE (scale)->slider, NULL, &height);
547 x += width + SCALE_CLASS (scale)->value_spacing;
548 y += widget->allocation.y + ((height -
549 (GTK_WIDGET (scale)->style->font->ascent +
550 GTK_WIDGET (scale)->style->font->descent)) / 2 +
551 GTK_WIDGET (scale)->style->font->ascent);
554 gdk_window_get_position (GTK_RANGE (scale)->trough, &x, &y);
555 gdk_window_get_size (GTK_RANGE (scale)->slider, &width, NULL);
556 gdk_window_get_size (GTK_RANGE (scale)->trough, NULL, &height);
558 x += (width - text_width) / 2;
559 y -= GTK_WIDGET (scale)->style->font->descent;
562 gdk_window_get_position (GTK_RANGE (scale)->trough, &x, &y);
563 gdk_window_get_size (GTK_RANGE (scale)->slider, &width, NULL);
564 gdk_window_get_size (GTK_RANGE (scale)->trough, NULL, &height);
566 x += (width - text_width) / 2;
567 y += height + GTK_WIDGET (scale)->style->font->ascent;
571 state_type = GTK_STATE_NORMAL;
572 if (!GTK_WIDGET_IS_SENSITIVE (scale))
573 state_type = GTK_STATE_INSENSITIVE;
575 gtk_paint_string (GTK_WIDGET (scale)->style,
576 GTK_WIDGET (scale)->window,
578 NULL, GTK_WIDGET (scale), "vscale",
584 gtk_vscale_trough_keys (GtkRange *range,
586 GtkScrollType *scroll,
589 gint return_val = FALSE;
594 *scroll = GTK_SCROLL_STEP_BACKWARD;
598 *scroll = GTK_SCROLL_STEP_FORWARD;
602 *scroll = GTK_SCROLL_PAGE_BACKWARD;
606 *scroll = GTK_SCROLL_PAGE_FORWARD;
610 *pos = GTK_TROUGH_START;
614 *pos = GTK_TROUGH_END;