diff options
Diffstat (limited to 'src/core/screen.c')
| -rw-r--r-- | src/core/screen.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/src/core/screen.c b/src/core/screen.c index 99e3fc39..6c61585e 100644 --- a/src/core/screen.c +++ b/src/core/screen.c @@ -65,6 +65,9 @@ static void set_workspace_names (MetaScreen *screen); static void prefs_changed_callback (MetaPreference pref, gpointer data); +static void on_monitors_changed (GdkScreen *gdk_screen, + gpointer user_data); + static void set_desktop_geometry_hint (MetaScreen *screen); static void set_desktop_viewport_hint (MetaScreen *screen); @@ -599,6 +602,10 @@ meta_screen_new (MetaDisplay *display, meta_prefs_add_listener (prefs_changed_callback, screen); + /* Connect to monitors-changed signal to handle dynamic HiDPI scale changes */ + g_signal_connect (gdk_display_get_default_screen (gdk_display_get_default ()), + "monitors-changed", G_CALLBACK (on_monitors_changed), screen); + #ifdef HAVE_STARTUP_NOTIFICATION screen->sn_context = sn_monitor_context_new (screen->display->sn_display, @@ -650,6 +657,9 @@ meta_screen_free (MetaScreen *screen, meta_prefs_remove_listener (prefs_changed_callback, screen); + g_signal_handlers_disconnect_by_func (gdk_display_get_default_screen (gdk_display_get_default ()), + G_CALLBACK (on_monitors_changed), screen); + meta_screen_ungrab_keys (screen); #ifdef HAVE_STARTUP_NOTIFICATION @@ -882,6 +892,58 @@ prefs_changed_callback (MetaPreference pref, } } +static void +on_monitors_changed (GdkScreen *gdk_screen, + gpointer user_data) +{ + MetaScreen *screen = user_data; + GSList *windows; + GSList *tmp; + + /* When monitors change (including HiDPI scale changes), update all window + * icons to render at the new scale. The icons are loaded at a specific pixel + * size based on meta_prefs_get_icon_size() which includes the scale factor, + * so we need to reload them when the scale changes. + */ + windows = meta_display_list_windows (screen->display); + + tmp = windows; + while (tmp != NULL) + { + MetaWindow *window = tmp->data; + + /* Only update icons for windows on this screen */ + if (window->screen == screen) + { + /* Invalidate the icon cache to force reload at new size */ + meta_icon_cache_invalidate (&window->icon_cache); + meta_window_update_icon_now (window); + } + + tmp = tmp->next; + } + + g_slist_free (windows); + + /* Update cursor size for new scale. meta_prefs_get_cursor_size() returns + * a scale-aware value, so this will reload cursors at the correct size. + */ + meta_display_set_cursor_theme (meta_prefs_get_cursor_theme (), + meta_prefs_get_cursor_size ()); + + /* Update the WM_ICON_SIZE hint so applications know the new preferred icon size */ + set_wm_icon_size_hint (screen); + + /* If there's an active tab popup, destroy it so it gets recreated with the + * new scaled icons next time Alt+Tab is pressed. + */ + if (screen->tab_popup) + { + meta_ui_tab_popup_free (screen->tab_popup); + screen->tab_popup = NULL; + } +} + static char* get_screen_name (MetaDisplay *display, int number) |