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 Free
16 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 #include "gtkhpaned.h"
20 #include "gtksignal.h"
22 static void gtk_hpaned_class_init (GtkHPanedClass *klass);
23 static void gtk_hpaned_init (GtkHPaned *hpaned);
24 static void gtk_hpaned_size_request (GtkWidget *widget,
25 GtkRequisition *requisition);
26 static void gtk_hpaned_size_allocate (GtkWidget *widget,
27 GtkAllocation *allocation);
28 static void gtk_hpaned_draw (GtkWidget *widget,
30 static void gtk_hpaned_xor_line (GtkPaned *paned);
31 static gint gtk_hpaned_button_press (GtkWidget *widget,
32 GdkEventButton *event);
33 static gint gtk_hpaned_button_release (GtkWidget *widget,
34 GdkEventButton *event);
35 static gint gtk_hpaned_motion (GtkWidget *widget,
36 GdkEventMotion *event);
39 gtk_hpaned_get_type ()
41 static guint hpaned_type = 0;
45 GtkTypeInfo hpaned_info =
49 sizeof (GtkHPanedClass),
50 (GtkClassInitFunc) gtk_hpaned_class_init,
51 (GtkObjectInitFunc) gtk_hpaned_init,
56 hpaned_type = gtk_type_unique (gtk_paned_get_type (), &hpaned_info);
63 gtk_hpaned_class_init (GtkHPanedClass *class)
65 GtkWidgetClass *widget_class;
67 widget_class = (GtkWidgetClass*) class;
69 widget_class->size_request = gtk_hpaned_size_request;
70 widget_class->size_allocate = gtk_hpaned_size_allocate;
71 widget_class->draw = gtk_hpaned_draw;
72 widget_class->button_press_event = gtk_hpaned_button_press;
73 widget_class->button_release_event = gtk_hpaned_button_release;
74 widget_class->motion_notify_event = gtk_hpaned_motion;
78 gtk_hpaned_init (GtkHPaned *hpaned)
87 hpaned = gtk_type_new (gtk_hpaned_get_type ());
89 return GTK_WIDGET (hpaned);
93 gtk_hpaned_size_request (GtkWidget *widget,
94 GtkRequisition *requisition)
98 g_return_if_fail (widget != NULL);
99 g_return_if_fail (GTK_IS_HPANED (widget));
100 g_return_if_fail (requisition != NULL);
102 paned = GTK_PANED (widget);
103 requisition->width = 0;
104 requisition->height = 0;
106 if (paned->child1 && GTK_WIDGET_VISIBLE (paned->child1))
108 gtk_widget_size_request (paned->child1, &paned->child1->requisition);
110 requisition->height = paned->child1->requisition.height;
111 requisition->width = paned->child1->requisition.width;
114 if (paned->child2 && GTK_WIDGET_VISIBLE (paned->child2))
116 gtk_widget_size_request (paned->child2, &paned->child2->requisition);
118 requisition->height = MAX(requisition->height,
119 paned->child2->requisition.height);
120 requisition->width += paned->child2->requisition.width;
123 requisition->width += GTK_CONTAINER (paned)->border_width * 2 + paned->gutter_size;
124 requisition->height += GTK_CONTAINER (paned)->border_width * 2;
128 gtk_hpaned_size_allocate (GtkWidget *widget,
129 GtkAllocation *allocation)
132 GtkAllocation child1_allocation;
133 GtkAllocation child2_allocation;
134 guint16 border_width;
136 g_return_if_fail (widget != NULL);
137 g_return_if_fail (GTK_IS_HPANED (widget));
138 g_return_if_fail (allocation != NULL);
140 widget->allocation = *allocation;
142 paned = GTK_PANED (widget);
143 border_width = GTK_CONTAINER (paned)->border_width;
145 if (!paned->position_set)
147 if (paned->child1 && GTK_WIDGET_VISIBLE (paned->child1))
148 paned->child1_size = paned->child1->requisition.width;
150 paned->child1_size = 0;
153 paned->child1_size = CLAMP (paned->child1_size, 0,
154 allocation->width - paned->gutter_size
155 - 2 * GTK_CONTAINER (paned)->border_width);
157 /* Move the handle before the children so we don't get extra expose events */
159 paned->handle_xpos = paned->child1_size + border_width + paned->gutter_size / 2 - paned->handle_size / 2;
160 paned->handle_ypos = allocation->height - border_width - 2*paned->handle_size;
162 if (GTK_WIDGET_REALIZED (widget))
164 gdk_window_move_resize (widget->window,
165 allocation->x, allocation->y,
166 allocation->width, allocation->height);
168 gdk_window_move (paned->handle, paned->handle_xpos, paned->handle_ypos);
171 if (GTK_WIDGET_MAPPED (widget))
173 gdk_window_clear_area (widget->window,
174 paned->groove_rectangle.x,
175 paned->groove_rectangle.y,
176 paned->groove_rectangle.width,
177 paned->groove_rectangle.height);
180 child1_allocation.height = child2_allocation.height = allocation->height - border_width * 2;
181 child1_allocation.width = paned->child1_size;
182 child1_allocation.x = border_width;
183 child1_allocation.y = child2_allocation.y = border_width;
185 paned->groove_rectangle.x = child1_allocation.x
186 + child1_allocation.width + paned->gutter_size / 2 - 1;
187 paned->groove_rectangle.y = 0;
188 paned->groove_rectangle.width = 2;
189 paned->groove_rectangle.height = allocation->height;
191 child2_allocation.x = paned->groove_rectangle.x + paned->gutter_size / 2 + 1;
192 child2_allocation.width = allocation->width
193 - child2_allocation.x - border_width;
195 /* Now allocate the childen, making sure, when resizing not to
196 * overlap the windows */
197 if (GTK_WIDGET_MAPPED(widget) &&
198 paned->child1 && GTK_WIDGET_VISIBLE (paned->child1) &&
199 paned->child1->allocation.width < child1_allocation.width)
201 if (paned->child2 && GTK_WIDGET_VISIBLE (paned->child2))
202 gtk_widget_size_allocate (paned->child2, &child2_allocation);
203 gtk_widget_size_allocate (paned->child1, &child1_allocation);
207 if (paned->child1 && GTK_WIDGET_VISIBLE (paned->child1))
208 gtk_widget_size_allocate (paned->child1, &child1_allocation);
209 if (paned->child2 && GTK_WIDGET_VISIBLE (paned->child2))
210 gtk_widget_size_allocate (paned->child2, &child2_allocation);
215 gtk_hpaned_draw (GtkWidget *widget,
219 GdkRectangle child_area;
220 guint16 border_width;
222 g_return_if_fail (widget != NULL);
223 g_return_if_fail (GTK_IS_PANED (widget));
225 if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_MAPPED (widget))
227 paned = GTK_PANED (widget);
228 border_width = GTK_CONTAINER (paned)->border_width;
231 gtk_widget_intersect (paned->child1, area, &child_area))
232 gtk_widget_draw (paned->child1, &child_area);
234 gtk_widget_intersect (paned->child2, area, &child_area))
235 gtk_widget_draw (paned->child2, &child_area);
237 gdk_draw_line (widget->window,
238 widget->style->dark_gc[widget->state],
239 border_width + paned->child1_size + paned->gutter_size / 2 - 1,
241 border_width + paned->child1_size + paned->gutter_size / 2 - 1,
242 widget->allocation.height - 1);
243 gdk_draw_line (widget->window,
244 widget->style->light_gc[widget->state],
245 border_width + paned->child1_size + paned->gutter_size / 2,
247 border_width + paned->child1_size + paned->gutter_size / 2,
248 widget->allocation.height - 1);
253 gtk_hpaned_xor_line (GtkPaned *paned)
259 widget = GTK_WIDGET(paned);
263 values.foreground = widget->style->white;
264 values.function = GDK_XOR;
265 values.subwindow_mode = GDK_INCLUDE_INFERIORS;
266 paned->xor_gc = gdk_gc_new_with_values (widget->window,
273 xpos = paned->child1_size
274 + GTK_CONTAINER(paned)->border_width + paned->gutter_size / 2;
276 gdk_draw_line (widget->window, paned->xor_gc,
280 widget->allocation.height - 1);
284 gtk_hpaned_button_press (GtkWidget *widget, GdkEventButton *event)
288 g_return_val_if_fail (widget != NULL,FALSE);
289 g_return_val_if_fail (GTK_IS_PANED (widget),FALSE);
291 paned = GTK_PANED (widget);
293 if (!paned->in_drag &&
294 (event->window == paned->handle) && (event->button == 1))
296 paned->in_drag = TRUE;
297 /* We need a server grab here, not gtk_grab_add(), since
298 * we don't want to pass events on to the widget's children */
299 gdk_pointer_grab (paned->handle, FALSE,
300 GDK_POINTER_MOTION_HINT_MASK
301 | GDK_BUTTON1_MOTION_MASK
302 | GDK_BUTTON_RELEASE_MASK,
303 NULL, NULL, event->time);
304 paned->child1_size += event->x - paned->handle_size / 2;
305 paned->child1_size = CLAMP (paned->child1_size, 0,
306 widget->allocation.width - paned->gutter_size
307 - 2 * GTK_CONTAINER (paned)->border_width);
308 gtk_hpaned_xor_line (paned);
315 gtk_hpaned_button_release (GtkWidget *widget, GdkEventButton *event)
319 g_return_val_if_fail (widget != NULL,FALSE);
320 g_return_val_if_fail (GTK_IS_PANED (widget),FALSE);
322 paned = GTK_PANED (widget);
324 if (paned->in_drag && (event->button == 1))
326 gtk_hpaned_xor_line (paned);
327 paned->in_drag = FALSE;
328 paned->position_set = TRUE;
329 gdk_pointer_ungrab (event->time);
330 gtk_widget_queue_resize (GTK_WIDGET (paned));
337 gtk_hpaned_motion (GtkWidget *widget, GdkEventMotion *event)
342 g_return_val_if_fail (widget != NULL, FALSE);
343 g_return_val_if_fail (GTK_IS_PANED (widget), FALSE);
345 if (event->is_hint || event->window != widget->window)
346 gtk_widget_get_pointer(widget, &x, NULL);
350 paned = GTK_PANED (widget);
354 gtk_hpaned_xor_line (paned);
355 paned->child1_size = x - GTK_CONTAINER (paned)->border_width - paned->gutter_size / 2;
356 paned->child1_size = CLAMP (paned->child1_size, 0,
357 widget->allocation.width - paned->gutter_size
358 - 2 * GTK_CONTAINER (paned)->border_width);
359 gtk_hpaned_xor_line (paned);