summaryrefslogtreecommitdiff
path: root/eel/eel-gtk-extensions.c
blob: b2a47d95f05996654155bad6750d97076ebfa18c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */

/* eel-gtk-extensions.c - implementation of new functions that operate on
  			  gtk classes. Perhaps some of these should be
  			  rolled into gtk someday.

   Copyright (C) 1999, 2000, 2001 Eazel, Inc.

   The Mate Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public License as
   published by the Free Software Foundation; either version 2 of the
   License, or (at your option) any later version.

   The Mate 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with the Mate Library; see the file COPYING.LIB.  If not,
   write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
   Boston, MA 02110-1301, USA.

   Authors: John Sullivan <sullivan@eazel.com>
            Ramiro Estrugo <ramiro@eazel.com>
	    Darin Adler <darin@eazel.com>
*/

#include <config.h>
#include "eel-gtk-extensions.h"

#include "eel-gdk-pixbuf-extensions.h"
#include "eel-glib-extensions.h"
#include "eel-mate-extensions.h"
#include "eel-marshal.h"
#include "eel-string.h"

#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include <gdk/gdk.h>
#include <gdk/gdkprivate.h>
#include <gdk/gdkx.h>
#include <gtk/gtk.h>
#include <glib/gi18n-lib.h>
#include <math.h>

/* Used for window position & size sanity-checking. The sizes are big enough to prevent
 * at least normal-sized mate panels from obscuring the window at the screen edges.
 */
#define MINIMUM_ON_SCREEN_WIDTH		100
#define MINIMUM_ON_SCREEN_HEIGHT	100

/**
 * eel_gtk_window_get_geometry_string:
 * @window: a #GtkWindow
 *
 * Obtains the geometry string for this window, suitable for
 * set_geometry_string(); assumes the window has NorthWest gravity
 *
 * Return value: geometry string, must be freed
 **/
char*
eel_gtk_window_get_geometry_string (GtkWindow *window)
{
    char *str;
    int w, h, x, y;

    g_return_val_if_fail (GTK_IS_WINDOW (window), NULL);
    g_return_val_if_fail (gtk_window_get_gravity (window) ==
                          GDK_GRAVITY_NORTH_WEST, NULL);

    gtk_window_get_position (window, &x, &y);
    gtk_window_get_size (window, &w, &h);

    str = g_strdup_printf ("%dx%d+%d+%d", w, h, x, y);

    return str;
}

static void
sanity_check_window_position (int *left, int *top)
{
    GdkScreen *screen;
    gint scale;

    g_assert (left != NULL);
    g_assert (top != NULL);

    screen = gdk_screen_get_default ();
    scale = gdk_window_get_scale_factor (gdk_screen_get_root_window (screen));

    /* Make sure the top of the window is on screen, for
     * draggability (might not be necessary with all window managers,
     * but seems reasonable anyway). Make sure the top of the window
     * isn't off the bottom of the screen, or so close to the bottom
     * that it might be obscured by the panel.
     */
    *top = CLAMP (*top, 0, HeightOfScreen (gdk_x11_screen_get_xscreen (screen)) / scale - MINIMUM_ON_SCREEN_HEIGHT);

    /* FIXME bugzilla.eazel.com 669:
     * If window has negative left coordinate, set_uposition sends it
     * somewhere else entirely. Not sure what level contains this bug (XWindows?).
     * Hacked around by pinning the left edge to zero, which just means you
     * can't set a window to be partly off the left of the screen using
     * this routine.
     */
    /* Make sure the left edge of the window isn't off the right edge of
     * the screen, or so close to the right edge that it might be
     * obscured by the panel.
     */
    *left = CLAMP (*left, 0, WidthOfScreen (gdk_x11_screen_get_xscreen (screen)) / scale - MINIMUM_ON_SCREEN_WIDTH);
}

static void
sanity_check_window_dimensions (guint *width, guint *height)
{
    GdkScreen *screen;
    gint scale;

    g_assert (width != NULL);
    g_assert (height != NULL);

    screen = gdk_screen_get_default ();
    scale = gdk_window_get_scale_factor (gdk_screen_get_root_window (screen));

    /* Pin the size of the window to the screen, so we don't end up in
     * a state where the window is so big essential parts of it can't
     * be reached (might not be necessary with all window managers,
     * but seems reasonable anyway).
     */
    *width = MIN (*width, WidthOfScreen (gdk_x11_screen_get_xscreen (screen)) / scale);
    *height = MIN (*height, HeightOfScreen (gdk_x11_screen_get_xscreen (screen)) / scale);
}

/**
 * eel_gtk_window_set_initial_geometry:
 *
 * Sets the position and size of a GtkWindow before the
 * GtkWindow is shown. It is an error to call this on a window that
 * is already on-screen. Takes into account screen size, and does
 * some sanity-checking on the passed-in values.
 *
 * @window: A non-visible GtkWindow
 * @geometry_flags: A EelGdkGeometryFlags value defining which of
 * the following parameters have defined values
 * @left: pixel coordinate for left of window
 * @top: pixel coordinate for top of window
 * @width: width of window in pixels
 * @height: height of window in pixels
 */
void
eel_gtk_window_set_initial_geometry (GtkWindow *window,
                                     EelGdkGeometryFlags geometry_flags,
                                     int left,
                                     int top,
                                     guint width,
                                     guint height)
{
    int real_left, real_top;

    g_return_if_fail (GTK_IS_WINDOW (window));

    /* Setting the default size doesn't work when the window is already showing.
     * Someday we could make this move an already-showing window, but we don't
     * need that functionality yet.
     */
    g_return_if_fail (!gtk_widget_get_visible (GTK_WIDGET (window)));

    if ((geometry_flags & EEL_GDK_X_VALUE) && (geometry_flags & EEL_GDK_Y_VALUE))
    {
        GdkScreen *screen;
        int screen_width, screen_height;
        int scale;

        real_left = left;
        real_top = top;

        screen = gtk_window_get_screen (window);
        scale = gtk_widget_get_scale_factor (GTK_WIDGET (window));
        screen_width  = WidthOfScreen (gdk_x11_screen_get_xscreen (screen)) / scale;
        screen_height = HeightOfScreen (gdk_x11_screen_get_xscreen (screen)) / scale;

        /* This is sub-optimal. GDK doesn't allow us to set win_gravity
         * to South/East types, which should be done if using negative
         * positions (so that the right or bottom edge of the window
         * appears at the specified position, not the left or top).
         * However it does seem to be consistent with other MATE apps.
         */
        if (geometry_flags & EEL_GDK_X_NEGATIVE)
        {
            real_left = screen_width - real_left;
        }
        if (geometry_flags & EEL_GDK_Y_NEGATIVE)
        {
            real_top = screen_height - real_top;
        }

        sanity_check_window_position (&real_left, &real_top);
        gtk_window_move (window, real_left, real_top);
    }

    if ((geometry_flags & EEL_GDK_WIDTH_VALUE) && (geometry_flags & EEL_GDK_HEIGHT_VALUE))
    {
        sanity_check_window_dimensions (&width, &height);
        gtk_window_set_default_size (GTK_WINDOW (window), (int)width, (int)height);
    }
}

/**
 * eel_gtk_window_set_initial_geometry_from_string:
 *
 * Sets the position and size of a GtkWindow before the
 * GtkWindow is shown. The geometry is passed in as a string.
 * It is an error to call this on a window that
 * is already on-screen. Takes into account screen size, and does
 * some sanity-checking on the passed-in values.
 *
 * @window: A non-visible GtkWindow
 * @geometry_string: A string suitable for use with eel_gdk_parse_geometry
 * @minimum_width: If the width from the string is smaller than this,
 * use this for the width.
 * @minimum_height: If the height from the string is smaller than this,
 * use this for the height.
 * @ignore_position: If true position data from string will be ignored.
 */
void
eel_gtk_window_set_initial_geometry_from_string (GtkWindow *window,
        const char *geometry_string,
        guint minimum_width,
        guint minimum_height,
        gboolean ignore_position)
{
    int left, top;
    guint width, height;
    EelGdkGeometryFlags geometry_flags;

    g_return_if_fail (GTK_IS_WINDOW (window));
    g_return_if_fail (geometry_string != NULL);

    /* Setting the default size doesn't work when the window is already showing.
     * Someday we could make this move an already-showing window, but we don't
     * need that functionality yet.
     */
    g_return_if_fail (!gtk_widget_get_visible (GTK_WIDGET (window)));

    geometry_flags = eel_gdk_parse_geometry (geometry_string, &left, &top, &width, &height);

    /* Make sure the window isn't smaller than makes sense for this window.
     * Other sanity checks are performed in set_initial_geometry.
     */
    if (geometry_flags & EEL_GDK_WIDTH_VALUE)
    {
        width = MAX (width, minimum_width);
    }
    if (geometry_flags & EEL_GDK_HEIGHT_VALUE)
    {
        height = MAX (height, minimum_height);
    }

    /* Ignore saved window position if requested. */
    if (ignore_position)
    {
        geometry_flags &= ~(EEL_GDK_X_VALUE | EEL_GDK_Y_VALUE);
    }

    eel_gtk_window_set_initial_geometry (window, geometry_flags, left, top, width, height);
}

/**
 * eel_pop_up_context_menu:
 *
 * Pop up a context menu under the mouse.
 * The menu is sunk after use, so it will be destroyed unless the
 * caller first ref'ed it.
 *
 * This function is more of a helper function than a gtk extension,
 * so perhaps it belongs in a different file.
 *
 * @menu: The menu to pop up under the mouse.
 * @offset_x: Number of pixels to displace the popup menu vertically
 * @offset_y: Number of pixels to displace the popup menu horizontally
 * @event: The event that invoked this popup menu.
 **/
void
eel_pop_up_context_menu (GtkMenu	*menu,
                         GdkEventButton *event)
{
    g_return_if_fail (GTK_IS_MENU (menu));

    gtk_menu_popup_at_pointer (menu, (const GdkEvent*) event);

    g_object_ref_sink (menu);
    g_object_unref (menu);
}

GtkMenuItem *
eel_gtk_menu_append_separator (GtkMenu *menu)
{
    return eel_gtk_menu_insert_separator (menu, -1);
}

GtkMenuItem *
eel_gtk_menu_insert_separator (GtkMenu *menu, int index)
{
    GtkWidget *menu_item;

    menu_item = gtk_separator_menu_item_new ();
    gtk_widget_show (menu_item);
    gtk_menu_shell_insert (GTK_MENU_SHELL (menu), menu_item, index);

    return GTK_MENU_ITEM (menu_item);
}

GtkWidget *
eel_gtk_menu_tool_button_get_button (GtkMenuToolButton *tool_button)
{
    GtkContainer *container;
    GList *children;
    GtkWidget *button;

    g_return_val_if_fail (GTK_IS_MENU_TOOL_BUTTON (tool_button), NULL);

    /* The menu tool button's button is the first child
     * of the child hbox. */
    container = GTK_CONTAINER (gtk_bin_get_child (GTK_BIN (tool_button)));
    children = gtk_container_get_children (container);
    button = GTK_WIDGET (children->data);

    g_list_free (children);

    return button;
}

/**
 * eel_gtk_label_make_bold.
 *
 * Switches the font of label to a bold equivalent.
 * @label: The label.
 **/
void
eel_gtk_label_make_bold (GtkLabel *label)
{
    PangoFontDescription *font_desc;

    font_desc = pango_font_description_new ();

    pango_font_description_set_weight (font_desc,
                                       PANGO_WEIGHT_BOLD);

    /* This will only affect the weight of the font, the rest is
     * from the current state of the widget, which comes from the
     * theme or user prefs, since the font desc only has the
     * weight flag turned on.
     */
    PangoAttrList *attrs = pango_attr_list_new ();
    PangoAttribute *font_desc_attr = pango_attr_font_desc_new (font_desc);
    pango_attr_list_insert (attrs, font_desc_attr);
    gtk_label_set_attributes (label, attrs);
    pango_attr_list_unref (attrs);

    pango_font_description_free (font_desc);
}

static gboolean
tree_view_button_press_callback (GtkWidget *tree_view,
                                 GdkEventButton *event,
                                 gpointer data)
{
    GtkTreePath *path;
    GtkTreeViewColumn *column;

    if (event->button == 1 && event->type == GDK_BUTTON_PRESS)
    {
        if (gtk_tree_view_get_path_at_pos (GTK_TREE_VIEW (tree_view),
                                           event->x, event->y,
                                           &path,
                                           &column,
                                           NULL,
                                           NULL))
        {
            gtk_tree_view_row_activated
            (GTK_TREE_VIEW (tree_view), path, column);
            gtk_tree_path_free (path);
        }
    }

    return FALSE;
}

void
eel_gtk_tree_view_set_activate_on_single_click (GtkTreeView *tree_view,
        gboolean should_activate)
{
    guint button_press_id;

    button_press_id = GPOINTER_TO_UINT
                      (g_object_get_data (G_OBJECT (tree_view),
                                          "eel-tree-view-activate"));

    if (button_press_id && !should_activate)
    {
        g_signal_handler_disconnect (tree_view, button_press_id);
        g_object_set_data (G_OBJECT (tree_view),
                           "eel-tree-view-activate",
                           NULL);
    }
    else if (!button_press_id && should_activate)
    {
        button_press_id = g_signal_connect
                          (tree_view,
                           "button_press_event",
                           G_CALLBACK  (tree_view_button_press_callback),
                           NULL);
        g_object_set_data (G_OBJECT (tree_view),
                           "eel-tree-view-activate",
                           GUINT_TO_POINTER (button_press_id));
    }
}

void
eel_gtk_message_dialog_set_details_label (GtkMessageDialog *dialog,
				  const gchar *details_text)
{
	GtkWidget *content_area, *expander, *label;

	content_area = gtk_message_dialog_get_message_area (dialog);
	expander = gtk_expander_new_with_mnemonic (_("Show more _details"));
	gtk_expander_set_spacing (GTK_EXPANDER (expander), 6);

	label = gtk_label_new (details_text);
	gtk_label_set_line_wrap (GTK_LABEL (label), TRUE);
	gtk_label_set_selectable (GTK_LABEL (label), TRUE);
	gtk_label_set_xalign (GTK_LABEL (label), 0);

	gtk_container_add (GTK_CONTAINER (expander), label);
	gtk_box_pack_start (GTK_BOX (content_area), expander, FALSE, FALSE, 0);

	gtk_widget_show (label);
	gtk_widget_show (expander);
}

GtkWidget *
eel_image_menu_item_new_from_icon (const gchar *icon_name,
                                   const gchar *label_name)
{
    gchar *concat;
    GtkWidget *icon;
    GSettings *icon_settings;
    GtkWidget *box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);

    icon_settings = g_settings_new ("org.mate.interface");
    if ((icon_name) && (g_settings_get_boolean (icon_settings, "menus-have-icons")))
        /*Load the icon if user has icons in menus turned on*/
        icon = gtk_image_new_from_icon_name (icon_name, GTK_ICON_SIZE_MENU);
    else
        /*Load an empty icon to hold the space*/
        icon = gtk_image_new ();

    concat = g_strconcat (label_name, "     ", NULL);
    GtkWidget *label_menu = gtk_label_new_with_mnemonic (concat);
    GtkWidget *menuitem = gtk_menu_item_new ();

    gtk_container_add (GTK_CONTAINER (box), icon);

    gtk_container_add (GTK_CONTAINER (box), label_menu);

    gtk_container_add (GTK_CONTAINER (menuitem), box);
    gtk_widget_show_all (menuitem);

    g_object_unref(icon_settings);
    g_free (concat);

    return menuitem;
}

GtkWidget *
eel_image_menu_item_new_from_surface (cairo_surface_t *icon_surface,
                                      const gchar     *label_name)
{
    gchar *concat;
    GtkWidget *icon;
    GtkWidget *box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);

    if (icon_surface)
        icon = gtk_image_new_from_surface (icon_surface);
    else
        icon = gtk_image_new ();

    concat = g_strconcat (label_name, "     ", NULL);
    GtkWidget *label_menu = gtk_label_new (concat);
    GtkWidget *menuitem = gtk_menu_item_new ();

    gtk_container_add (GTK_CONTAINER (box), icon);
    gtk_container_add (GTK_CONTAINER (box), label_menu);

    gtk_container_add (GTK_CONTAINER (menuitem), box);
    gtk_widget_show_all (menuitem);

    g_free (concat);

    return menuitem;
}

gboolean
eel_notebook_scroll_event_cb (GtkWidget       *widget,
                              GdkEventScroll  *event)
{
    GtkNotebook *notebook = GTK_NOTEBOOK (widget);
    GtkWidget *child, *event_widget, *action_widget;

    child = gtk_notebook_get_nth_page (notebook, gtk_notebook_get_current_page (notebook));
    if (child == NULL)
        return FALSE;

    event_widget = gtk_get_event_widget ((GdkEvent*) event);

    /* Ignore scroll events from the content of the page */
    if (event_widget == NULL || event_widget == child || gtk_widget_is_ancestor (event_widget, child))
        return FALSE;

    /* And also from the action widgets */
    action_widget = gtk_notebook_get_action_widget (notebook, GTK_PACK_START);
    if (event_widget == action_widget || (action_widget != NULL && gtk_widget_is_ancestor (event_widget, action_widget)))
        return FALSE;

    action_widget = gtk_notebook_get_action_widget (notebook, GTK_PACK_END);
    if (event_widget == action_widget || (action_widget != NULL && gtk_widget_is_ancestor (event_widget, action_widget)))
        return FALSE;

    switch (event->direction) {
        case GDK_SCROLL_RIGHT:
        case GDK_SCROLL_DOWN:
            gtk_notebook_next_page (notebook);
            break;
        case GDK_SCROLL_LEFT:
        case GDK_SCROLL_UP:
            gtk_notebook_prev_page (notebook);
            break;
        case GDK_SCROLL_SMOOTH:
            switch (gtk_notebook_get_tab_pos (notebook)) {
                case GTK_POS_LEFT:
                case GTK_POS_RIGHT:
                    if (event->delta_y > 0)
                        gtk_notebook_next_page (notebook);
                    else if (event->delta_y < 0)
                        gtk_notebook_prev_page (notebook);
                    break;
                case GTK_POS_TOP:
                case GTK_POS_BOTTOM:
                    if (event->delta_x > 0)
                        gtk_notebook_next_page (notebook);
                    else if (event->delta_x < 0)
                        gtk_notebook_prev_page (notebook);
                    break;
            }
            break;
    }

    return TRUE;
}