forked from AuroraMiddleware/gtk
a2ce6268b2
Show various ways to influence spacing. This is more or less modeled on the way Androids constraint layout lets you set up 'chains'.
75 lines
1.8 KiB
C
75 lines
1.8 KiB
C
/* Constraints/Builder
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*
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* GtkConstraintLayouts can be created in .ui files, and constraints can
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* be set up at that time as well, as this example demonstrates. It shows
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* various ways to do spacing and sizing with constraints.
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*
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* Make the window wider to see the rows react differently
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*/
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#include <glib/gi18n.h>
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#include <gtk/gtk.h>
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G_DECLARE_FINAL_TYPE (ConstraintsGrid, constraints_grid, CONSTRAINTS, GRID, GtkWidget)
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struct _ConstraintsGrid
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{
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GtkWidget parent_instance;
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};
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G_DEFINE_TYPE (ConstraintsGrid, constraints_grid, GTK_TYPE_WIDGET)
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static void
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constraints_grid_init (ConstraintsGrid *grid)
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{
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}
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static void
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constraints_grid_dispose (GObject *object)
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{
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GtkWidget *widget = GTK_WIDGET (object);
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GtkWidget *child;
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while ((child = gtk_widget_get_first_child (widget)))
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gtk_widget_unparent (child);
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G_OBJECT_CLASS (constraints_grid_parent_class)->dispose (object);
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}
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static void
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constraints_grid_class_init (ConstraintsGridClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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object_class->dispose = constraints_grid_dispose;
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}
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GtkWidget *
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do_constraints_builder (GtkWidget *do_widget)
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{
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static GtkWidget *window;
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if (!window)
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{
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GtkBuilder *builder;
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g_type_ensure (constraints_grid_get_type ());
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builder = gtk_builder_new_from_resource ("/constraints_builder/constraints_builder.ui");
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window = GTK_WIDGET (gtk_builder_get_object (builder, "window1"));
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gtk_window_set_display (GTK_WINDOW (window),
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gtk_widget_get_display (do_widget));
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g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);
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g_object_unref (builder);
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}
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if (!gtk_widget_get_visible (window))
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gtk_widget_show (window);
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else
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gtk_window_destroy (GTK_WINDOW (window));
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return window;
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}
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