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gtk-demo: Add a progress bar when the colors demo resorts

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This commit is contained in:
Benjamin Otte 2020-07-22 03:18:33 +02:00
parent 2b19e2fc1f
commit b23f793753
1 changed files with 40 additions and 24 deletions
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64
demos/gtk-demo/listview_colors.c
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@ -662,8 +662,6 @@ create_color_grid (void)
{ {
GtkWidget *gridview; GtkWidget *gridview;
GtkListItemFactory *factory; GtkListItemFactory *factory;
GListModel *selection;
GtkSortListModel *sort_model;
gridview = gtk_grid_view_new (); gridview = gtk_grid_view_new ();
gtk_scrollable_set_hscroll_policy (GTK_SCROLLABLE (gridview), GTK_SCROLL_NATURAL); gtk_scrollable_set_hscroll_policy (GTK_SCROLLABLE (gridview), GTK_SCROLL_NATURAL);
@ -677,14 +675,6 @@ create_color_grid (void)
gtk_grid_view_set_max_columns (GTK_GRID_VIEW (gridview), 24); gtk_grid_view_set_max_columns (GTK_GRID_VIEW (gridview), 24);
gtk_grid_view_set_enable_rubberband (GTK_GRID_VIEW (gridview), TRUE); gtk_grid_view_set_enable_rubberband (GTK_GRID_VIEW (gridview), TRUE);
sort_model = gtk_sort_list_model_new (gtk_color_list_new (0), NULL);
gtk_sort_list_model_set_incremental (sort_model, TRUE);
selection = G_LIST_MODEL (gtk_multi_selection_new (G_LIST_MODEL (sort_model)));
gtk_grid_view_set_model (GTK_GRID_VIEW (gridview), selection);
g_object_unref (selection);
g_object_unref (sort_model);
return gridview; return gridview;
} }
@ -837,6 +827,22 @@ update_selection_average (GListModel *model,
g_object_unref (color); g_object_unref (color);
} }
static void
update_progress_cb (GtkSortListModel *model,
GParamSpec *pspec,
GtkProgressBar *progress)
{
guint total;
guint pending;
total = g_list_model_get_n_items (G_LIST_MODEL (model));
total = MAX (total, 1); /* avoid div by 0 below */
pending = gtk_sort_list_model_get_pending (model);
gtk_widget_set_visible (GTK_WIDGET (progress), pending != 0);
gtk_progress_bar_set_fraction (progress, (total - pending) / (double) total);
}
static GtkWidget *window = NULL; static GtkWidget *window = NULL;
GtkWidget * GtkWidget *
@ -844,10 +850,11 @@ do_listview_colors (GtkWidget *do_widget)
{ {
if (window == NULL) if (window == NULL)
{ {
GtkWidget *header, *gridview, *sw, *box, *dropdown; GtkMultiSelection *selection;
GtkSortListModel *sort_model;
GtkWidget *header, *overlay, *gridview, *sw, *box, *dropdown;
GtkListItemFactory *factory; GtkListItemFactory *factory;
GListStore *factories; GListStore *factories;
GListModel *model;
GtkSorter *sorter; GtkSorter *sorter;
GtkSorter *multi_sorter; GtkSorter *multi_sorter;
GListStore *sorters; GListStore *sorters;
@ -865,6 +872,7 @@ do_listview_colors (GtkWidget *do_widget)
GtkWidget *selection_average_picture; GtkWidget *selection_average_picture;
GtkWidget *selection_info_toggle; GtkWidget *selection_info_toggle;
GtkWidget *selection_info_revealer; GtkWidget *selection_info_revealer;
GtkWidget *progress;
GtkCssProvider *provider; GtkCssProvider *provider;
provider = gtk_css_provider_new (); provider = gtk_css_provider_new ();
@ -874,6 +882,10 @@ do_listview_colors (GtkWidget *do_widget)
800); 800);
g_object_unref (provider); g_object_unref (provider);
sort_model = gtk_sort_list_model_new (gtk_color_list_new (0), NULL);
gtk_sort_list_model_set_incremental (sort_model, TRUE);
selection = GTK_MULTI_SELECTION (gtk_multi_selection_new (G_LIST_MODEL (sort_model)));
window = gtk_window_new (); window = gtk_window_new ();
gtk_window_set_title (GTK_WINDOW (window), "Colors"); gtk_window_set_title (GTK_WINDOW (window), "Colors");
header = gtk_header_bar_new (); header = gtk_header_bar_new ();
@ -884,8 +896,17 @@ do_listview_colors (GtkWidget *do_widget)
gtk_widget_get_display (do_widget)); gtk_widget_get_display (do_widget));
g_object_add_weak_pointer (G_OBJECT (window), (gpointer*)&window); g_object_add_weak_pointer (G_OBJECT (window), (gpointer*)&window);
overlay = gtk_overlay_new ();
gtk_window_set_child (GTK_WINDOW (window), overlay);
box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0); box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
gtk_window_set_child (GTK_WINDOW (window), box); gtk_overlay_set_child (GTK_OVERLAY (overlay), box);
progress = gtk_progress_bar_new ();
gtk_widget_set_hexpand (progress, TRUE);
gtk_widget_set_valign (progress, GTK_ALIGN_START);
g_signal_connect (sort_model, "notify::pending", G_CALLBACK (update_progress_cb), progress);
gtk_overlay_add_overlay (GTK_OVERLAY (overlay), progress);
selection_info_revealer = gtk_revealer_new (); selection_info_revealer = gtk_revealer_new ();
gtk_box_append (GTK_BOX (box), selection_info_revealer); gtk_box_append (GTK_BOX (box), selection_info_revealer);
@ -938,12 +959,12 @@ do_listview_colors (GtkWidget *do_widget)
gtk_box_append (GTK_BOX (box), sw); gtk_box_append (GTK_BOX (box), sw);
gridview = create_color_grid (); gridview = create_color_grid ();
gtk_grid_view_set_model (GTK_GRID_VIEW (gridview), G_LIST_MODEL (selection));
gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), gridview); gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), gridview);
gtk_widget_set_hexpand (sw, TRUE); gtk_widget_set_hexpand (sw, TRUE);
gtk_widget_set_vexpand (sw, TRUE); gtk_widget_set_vexpand (sw, TRUE);
model = gtk_grid_view_get_model (GTK_GRID_VIEW (gridview));
selection_filter = G_LIST_MODEL (gtk_selection_filter_model_new (GTK_SELECTION_MODEL (model))); selection_filter = G_LIST_MODEL (gtk_selection_filter_model_new (GTK_SELECTION_MODEL (selection)));
g_signal_connect (selection_filter, "items-changed", G_CALLBACK (update_selection_count), selection_size_label); g_signal_connect (selection_filter, "items-changed", G_CALLBACK (update_selection_count), selection_size_label);
g_signal_connect (selection_filter, "items-changed", G_CALLBACK (update_selection_average), selection_average_picture); g_signal_connect (selection_filter, "items-changed", G_CALLBACK (update_selection_average), selection_average_picture);
@ -952,9 +973,6 @@ do_listview_colors (GtkWidget *do_widget)
g_object_unref (selection_filter); g_object_unref (selection_filter);
g_object_unref (no_selection); g_object_unref (no_selection);
model = gtk_multi_selection_get_model (GTK_MULTI_SELECTION (model));
g_object_ref (model);
selection_info_toggle = gtk_toggle_button_new (); selection_info_toggle = gtk_toggle_button_new ();
gtk_button_set_icon_name (GTK_BUTTON (selection_info_toggle), "emblem-important-symbolic"); gtk_button_set_icon_name (GTK_BUTTON (selection_info_toggle), "emblem-important-symbolic");
gtk_widget_set_tooltip_text (selection_info_toggle, "Show selection info"); gtk_widget_set_tooltip_text (selection_info_toggle, "Show selection info");
@ -967,7 +985,7 @@ do_listview_colors (GtkWidget *do_widget)
button = gtk_button_new_with_mnemonic ("_Refill"); button = gtk_button_new_with_mnemonic ("_Refill");
g_signal_connect (button, "clicked", g_signal_connect (button, "clicked",
G_CALLBACK (refill), G_CALLBACK (refill),
gtk_sort_list_model_get_model (GTK_SORT_LIST_MODEL (model))); gtk_sort_list_model_get_model (sort_model));
gtk_header_bar_pack_start (GTK_HEADER_BAR (header), button); gtk_header_bar_pack_start (GTK_HEADER_BAR (header), button);
@ -982,15 +1000,14 @@ do_listview_colors (GtkWidget *do_widget)
gtk_label_set_width_chars (GTK_LABEL (label), len + 2); gtk_label_set_width_chars (GTK_LABEL (label), len + 2);
gtk_label_set_xalign (GTK_LABEL (label), 1); gtk_label_set_xalign (GTK_LABEL (label), 1);
g_signal_connect (gtk_grid_view_get_model (GTK_GRID_VIEW (gridview)), g_signal_connect (selection, "items-changed", G_CALLBACK (items_changed_cb), label);
"items-changed", G_CALLBACK (items_changed_cb), label);
gtk_header_bar_pack_start (GTK_HEADER_BAR (header), label); gtk_header_bar_pack_start (GTK_HEADER_BAR (header), label);
dropdown = gtk_drop_down_new (); dropdown = gtk_drop_down_new ();
gtk_drop_down_set_from_strings (GTK_DROP_DOWN (dropdown), (const char *[]) { "8", "64", "512", "4096", "32768", "262144", "2097152", "16777216", NULL }); gtk_drop_down_set_from_strings (GTK_DROP_DOWN (dropdown), (const char *[]) { "8", "64", "512", "4096", "32768", "262144", "2097152", "16777216", NULL });
g_signal_connect (dropdown, "notify::selected", g_signal_connect (dropdown, "notify::selected",
G_CALLBACK (limit_changed_cb), G_CALLBACK (limit_changed_cb),
gtk_sort_list_model_get_model (GTK_SORT_LIST_MODEL (model))); gtk_sort_list_model_get_model (sort_model));
g_signal_connect (dropdown, "notify::selected", g_signal_connect (dropdown, "notify::selected",
G_CALLBACK (limit_changed_cb2), G_CALLBACK (limit_changed_cb2),
label); label);
@ -1082,7 +1099,7 @@ do_listview_colors (GtkWidget *do_widget)
gtk_drop_down_set_model (GTK_DROP_DOWN (dropdown), G_LIST_MODEL (sorters)); gtk_drop_down_set_model (GTK_DROP_DOWN (dropdown), G_LIST_MODEL (sorters));
g_object_unref (sorters); g_object_unref (sorters);
g_object_bind_property (dropdown, "selected-item", model, "sorter", G_BINDING_SYNC_CREATE); g_object_bind_property (dropdown, "selected-item", sort_model, "sorter", G_BINDING_SYNC_CREATE);
factories = g_list_store_new (GTK_TYPE_LIST_ITEM_FACTORY); factories = g_list_store_new (GTK_TYPE_LIST_ITEM_FACTORY);
@ -1114,7 +1131,6 @@ do_listview_colors (GtkWidget *do_widget)
g_object_unref (factories); g_object_unref (factories);
g_object_bind_property (dropdown, "selected-item", gridview, "factory", G_BINDING_SYNC_CREATE); g_object_bind_property (dropdown, "selected-item", gridview, "factory", G_BINDING_SYNC_CREATE);
g_object_unref (model);
} }
if (!gtk_widget_get_visible (window)) if (!gtk_widget_get_visible (window))