4 * Copyright 2001 Sun Microsystems Inc.
6 * Erwann Chenede <erwann.chenede@sun.com>
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Library General Public License for more details.
18 * You should have received a copy of the GNU Library General Public
19 * License along with this library; if not, write to the
20 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 * Boston, MA 02111-1307, USA.
25 #include "gdk.h" /* For gdk_rectangle_intersect() */
27 #include "gdkwindow.h"
28 #include "gdkinternals.h"
29 #include "gdkscreen.h"
34 #define GDK_SCREEN_GET_PRIVATE(o) \
35 (G_TYPE_INSTANCE_GET_PRIVATE ((o), GDK_TYPE_SCREEN, GdkScreenPrivate))
37 typedef struct _GdkScreenPrivate GdkScreenPrivate;
39 struct _GdkScreenPrivate
41 PangoFontMap *fontmap;
45 static void gdk_screen_dispose (GObject *object);
46 static void gdk_screen_finalize (GObject *object);
47 static void gdk_screen_set_property (GObject *object,
51 static void gdk_screen_get_property (GObject *object,
70 static guint signals[LAST_SIGNAL] = { 0 };
72 G_DEFINE_TYPE (GdkScreen, gdk_screen, G_TYPE_OBJECT)
75 gdk_screen_class_init (GdkScreenClass *klass)
77 GObjectClass *object_class = G_OBJECT_CLASS (klass);
79 object_class->dispose = gdk_screen_dispose;
80 object_class->finalize = gdk_screen_finalize;
81 object_class->set_property = gdk_screen_set_property;
82 object_class->get_property = gdk_screen_get_property;
84 g_object_class_install_property (object_class,
86 g_param_spec_pointer ("font-options",
88 P_("The default font options for the screen"),
89 G_PARAM_READWRITE|G_PARAM_STATIC_NAME|
90 G_PARAM_STATIC_NICK|G_PARAM_STATIC_BLURB));
92 g_object_class_install_property (object_class,
94 g_param_spec_double ("resolution",
95 P_("Font resolution"),
96 P_("The resolution for fonts on the screen"),
100 G_PARAM_READWRITE|G_PARAM_STATIC_NAME|
101 G_PARAM_STATIC_NICK|G_PARAM_STATIC_BLURB));
104 * GdkScreen::size-changed:
105 * @screen: the object on which the signal is emitted
107 * The ::size_changed signal is emitted when the pixel width or
108 * height of a screen changes.
112 signals[SIZE_CHANGED] =
113 g_signal_new (g_intern_static_string ("size_changed"),
114 G_OBJECT_CLASS_TYPE (klass),
116 G_STRUCT_OFFSET (GdkScreenClass, size_changed),
118 g_cclosure_marshal_VOID__VOID,
123 * GdkScreen::composited-changed:
124 * @screen: the object on which the signal is emitted
126 * The ::composited_changed signal is emitted when the composited
127 * status of the screen changes
131 signals[COMPOSITED_CHANGED] =
132 g_signal_new (g_intern_static_string ("composited_changed"),
133 G_OBJECT_CLASS_TYPE (klass),
135 G_STRUCT_OFFSET (GdkScreenClass, composited_changed),
137 g_cclosure_marshal_VOID__VOID,
141 g_type_class_add_private (klass, sizeof (GdkScreenPrivate));
145 gdk_screen_init (GdkScreen *screen)
147 screen->resolution = -1.;
151 gdk_screen_dispose (GObject *object)
153 GdkScreen *screen = GDK_SCREEN (object);
156 for (i = 0; i < 32; ++i)
158 if (screen->exposure_gcs[i])
160 g_object_unref (screen->exposure_gcs[i]);
161 screen->exposure_gcs[i] = NULL;
164 if (screen->normal_gcs[i])
166 g_object_unref (screen->normal_gcs[i]);
167 screen->normal_gcs[i] = NULL;
171 G_OBJECT_CLASS (gdk_screen_parent_class)->dispose (object);
175 gdk_screen_finalize (GObject *object)
177 GdkScreen *screen = GDK_SCREEN (object);
178 GdkScreenPrivate *priv = GDK_SCREEN_GET_PRIVATE (screen);
180 if (screen->font_options)
181 cairo_font_options_destroy (screen->font_options);
184 g_object_unref (priv->fontmap);
186 G_OBJECT_CLASS (gdk_screen_parent_class)->finalize (object);
190 _gdk_screen_close (GdkScreen *screen)
192 g_return_if_fail (GDK_IS_SCREEN (screen));
196 screen->closed = TRUE;
197 g_object_run_dispose (G_OBJECT (screen));
201 /* Fallback used when the monitor "at" a point or window
205 get_nearest_monitor (GdkScreen *screen,
209 gint num_monitors, i;
210 gint nearest_dist = G_MAXINT;
211 gint nearest_monitor = 0;
213 g_return_val_if_fail (GDK_IS_SCREEN (screen), -1);
215 num_monitors = gdk_screen_get_n_monitors (screen);
217 for (i = 0; i < num_monitors; i++)
219 GdkRectangle monitor;
222 gdk_screen_get_monitor_geometry (screen, i, &monitor);
225 dist_x = monitor.x - x;
226 else if (x >= monitor.x + monitor.width)
227 dist_x = x - (monitor.x + monitor.width) + 1;
232 dist_y = monitor.y - y;
233 else if (y >= monitor.y + monitor.height)
234 dist_y = y - (monitor.y + monitor.height) + 1;
238 if (MIN (dist_x, dist_y) < nearest_dist)
240 nearest_dist = MIN (dist_x, dist_y);
245 return nearest_monitor;
249 * gdk_screen_get_monitor_at_point:
250 * @screen: a #GdkScreen.
251 * @x: the x coordinate in the virtual screen.
252 * @y: the y coordinate in the virtual screen.
254 * Returns the monitor number in which the point (@x,@y) is located.
256 * Returns: the monitor number in which the point (@x,@y) lies, or
257 * a monitor close to (@x,@y) if the point is not in any monitor.
262 gdk_screen_get_monitor_at_point (GdkScreen *screen,
266 gint num_monitors, i;
268 g_return_val_if_fail (GDK_IS_SCREEN (screen), -1);
270 num_monitors = gdk_screen_get_n_monitors (screen);
272 for (i=0;i<num_monitors;i++)
274 GdkRectangle monitor;
276 gdk_screen_get_monitor_geometry (screen, i, &monitor);
278 if (x >= monitor.x &&
279 x < monitor.x + monitor.width &&
281 y < (monitor.y + monitor.height))
285 return get_nearest_monitor (screen, x, y);
289 * gdk_screen_get_monitor_at_window:
290 * @screen: a #GdkScreen.
291 * @window: a #GdkWindow
292 * @returns: the monitor number in which most of @window is located,
293 * or if @window does not intersect any monitors, a monitor,
296 * Returns the number of the monitor in which the largest area of the
297 * bounding rectangle of @window resides.
302 gdk_screen_get_monitor_at_window (GdkScreen *screen,
305 gint num_monitors, i, area = 0, screen_num = -1;
306 GdkRectangle win_rect;
307 g_return_val_if_fail (GDK_IS_SCREEN (screen), -1);
309 gdk_window_get_geometry (window, &win_rect.x, &win_rect.y, &win_rect.width,
310 &win_rect.height, NULL);
311 gdk_window_get_origin (window, &win_rect.x, &win_rect.y);
312 num_monitors = gdk_screen_get_n_monitors (screen);
314 for (i=0;i<num_monitors;i++)
316 GdkRectangle tmp_monitor, intersect;
318 gdk_screen_get_monitor_geometry (screen, i, &tmp_monitor);
319 gdk_rectangle_intersect (&win_rect, &tmp_monitor, &intersect);
321 if (intersect.width * intersect.height > area)
323 area = intersect.width * intersect.height;
330 return get_nearest_monitor (screen,
331 win_rect.x + win_rect.width / 2,
332 win_rect.y + win_rect.height / 2);
338 * Returns the width of the default screen in pixels.
340 * Return value: the width of the default screen in pixels.
343 gdk_screen_width (void)
345 return gdk_screen_get_width (gdk_screen_get_default());
351 * Returns the height of the default screen in pixels.
353 * Return value: the height of the default screen in pixels.
356 gdk_screen_height (void)
358 return gdk_screen_get_height (gdk_screen_get_default());
362 * gdk_screen_width_mm:
364 * Returns the width of the default screen in millimeters.
365 * Note that on many X servers this value will not be correct.
367 * Return value: the width of the default screen in millimeters,
368 * though it is not always correct.
371 gdk_screen_width_mm (void)
373 return gdk_screen_get_width_mm (gdk_screen_get_default());
377 * gdk_screen_height_mm:
379 * Returns the height of the default screen in millimeters.
380 * Note that on many X servers this value will not be correct.
382 * Return value: the height of the default screen in millimeters,
383 * though it is not always correct.
386 gdk_screen_height_mm (void)
388 return gdk_screen_get_height_mm (gdk_screen_get_default ());
392 update_fontmap_resolution (GdkScreen *screen)
394 GdkScreenPrivate *priv = GDK_SCREEN_GET_PRIVATE (screen);
395 double dpi = screen->resolution;
401 pango_cairo_font_map_set_resolution (priv->fontmap, dpi);
405 * _gdk_screen_get_font_map:
406 * @screen: a #GdkScreen
408 * Gets the Pango fontmap for this screen that is used to create
409 * #PangoContext, with the right resolution set on it.
411 * Return value: the fontmap.
416 _gdk_screen_get_font_map (GdkScreen *screen)
418 GdkScreenPrivate *priv;
420 g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
422 priv = GDK_SCREEN_GET_PRIVATE (screen);
424 if (G_UNLIKELY (!priv->fontmap))
426 priv->fontmap = pango_cairo_font_map_new ();
427 update_fontmap_resolution (screen);
430 return priv->fontmap;
434 * gdk_screen_set_font_options:
435 * @screen: a #GdkScreen
436 * @options: a #cairo_font_options_t, or %NULL to unset any
437 * previously set default font options.
439 * Sets the default font options for the screen. These
440 * options will be set on any #PangoContext's newly created
441 * with gdk_pango_context_get_for_screen(). Changing the
442 * default set of font options does not affect contexts that
443 * have already been created.
448 gdk_screen_set_font_options (GdkScreen *screen,
449 const cairo_font_options_t *options)
451 g_return_if_fail (GDK_IS_SCREEN (screen));
453 if (screen->font_options != options)
455 if (screen->font_options)
456 cairo_font_options_destroy (screen->font_options);
459 screen->font_options = cairo_font_options_copy (options);
461 screen->font_options = NULL;
463 g_object_notify (G_OBJECT (screen), "font-options");
468 * gdk_screen_get_font_options:
469 * @screen: a #GdkScreen
471 * Gets any options previously set with gdk_screen_set_font_options().
473 * Return value: the current font options, or %NULL if no default
474 * font options have been set.
478 const cairo_font_options_t *
479 gdk_screen_get_font_options (GdkScreen *screen)
481 g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
483 return screen->font_options;
487 * gdk_screen_set_resolution:
488 * @screen: a #GdkScreen
489 * @dpi: the resolution in "dots per inch". (Physical inches aren't actually
490 * involved; the terminology is conventional.)
492 * Sets the resolution for font handling on the screen. This is a
493 * scale factor between points specified in a #PangoFontDescription
494 * and cairo units. The default value is 96, meaning that a 10 point
495 * font will be 13 units high. (10 * 96. / 72. = 13.3).
500 gdk_screen_set_resolution (GdkScreen *screen,
503 g_return_if_fail (GDK_IS_SCREEN (screen));
508 if (screen->resolution != dpi)
510 screen->resolution = dpi;
512 update_fontmap_resolution (screen);
514 g_object_notify (G_OBJECT (screen), "resolution");
519 * gdk_screen_get_resolution:
520 * @screen: a #GdkScreen
522 * Gets the resolution for font handling on the screen; see
523 * gdk_screen_set_resolution() for full details.
525 * Return value: the current resolution, or -1 if no resolution
531 gdk_screen_get_resolution (GdkScreen *screen)
533 g_return_val_if_fail (GDK_IS_SCREEN (screen), -1.);
535 return screen->resolution;
539 gdk_screen_get_property (GObject *object,
544 GdkScreen *screen = GDK_SCREEN (object);
548 case PROP_FONT_OPTIONS:
549 g_value_set_pointer (value, gdk_screen_get_font_options (screen));
551 case PROP_RESOLUTION:
552 g_value_set_double (value, gdk_screen_get_resolution (screen));
555 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
561 gdk_screen_set_property (GObject *object,
566 GdkScreen *screen = GDK_SCREEN (object);
570 case PROP_FONT_OPTIONS:
571 gdk_screen_set_font_options (screen, g_value_get_pointer (value));
573 case PROP_RESOLUTION:
574 gdk_screen_set_resolution (screen, g_value_get_double (value));
577 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
582 #define __GDK_SCREEN_C__
583 #include "gdkaliasdef.c"