--- /dev/null
+#include <gtk/gtk.h>
+
+#define BASELINE_TYPE_WIDGET (baseline_widget_get_type ())
+G_DECLARE_FINAL_TYPE (BaselineWidget, baseline_widget, BASELINE, WIDGET, GtkWidget)
+
+enum
+{
+ PROP_ABOVE = 1,
+ PROP_BELOW,
+ PROP_ACROSS
+};
+
+struct _BaselineWidget
+{
+ GtkWidget parent_instance;
+
+ int above, below, across;
+};
+
+struct _BaselineWidgetClass
+{
+ GtkWidgetClass parent_class;
+};
+
+G_DEFINE_TYPE (BaselineWidget, baseline_widget, GTK_TYPE_WIDGET)
+
+static void
+baseline_widget_init (BaselineWidget *self)
+{
+}
+
+static void
+baseline_widget_set_property (GObject *object,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ BaselineWidget *self = BASELINE_WIDGET (object);
+
+ switch (prop_id)
+ {
+ case PROP_ABOVE:
+ self->above = g_value_get_int (value);
+ gtk_widget_queue_resize (GTK_WIDGET (object));
+ break;
+
+ case PROP_BELOW:
+ self->below = g_value_get_int (value);
+ gtk_widget_queue_resize (GTK_WIDGET (object));
+ break;
+
+ case PROP_ACROSS:
+ self->across = g_value_get_int (value);
+ gtk_widget_queue_resize (GTK_WIDGET (object));
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+baseline_widget_get_property (GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ BaselineWidget *self = BASELINE_WIDGET (object);
+
+ switch (prop_id)
+ {
+ case PROP_ABOVE:
+ g_value_set_int (value, self->above);
+ break;
+
+ case PROP_BELOW:
+ g_value_set_int (value, self->below);
+ break;
+
+ case PROP_ACROSS:
+ g_value_set_int (value, self->across);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+baseline_widget_measure (GtkWidget *widget,
+ GtkOrientation orientation,
+ int for_size,
+ int *minimum,
+ int *natural,
+ int *minimum_baseline,
+ int *natural_baseline)
+{
+ BaselineWidget *self = BASELINE_WIDGET (widget);
+
+ if (orientation == GTK_ORIENTATION_VERTICAL)
+ {
+ if (self->below >= 0)
+ {
+ *minimum = *natural = self->above + self->below;
+ *minimum_baseline = *natural_baseline = self->above;
+ }
+ else
+ {
+ *minimum = *natural = self->above;
+ *minimum_baseline = *natural_baseline = -1;
+ }
+ }
+ else
+ {
+ *minimum = *natural = self->across;
+ *minimum_baseline = *natural_baseline = -1;
+ }
+}
+
+static void
+baseline_widget_snapshot (GtkWidget *widget,
+ GtkSnapshot *snapshot)
+{
+ BaselineWidget *self = BASELINE_WIDGET (widget);
+ int height, baseline;
+ graphene_rect_t bounds;
+ float widths[4];
+ GdkRGBA colors[4];
+ GskRoundedRect outline;
+
+ height = gtk_widget_get_height (widget);
+ baseline = gtk_widget_get_allocated_baseline (widget);
+
+ gtk_snapshot_save (snapshot);
+
+ if (baseline > -1)
+ {
+ int y;
+ if (self->below >= 0)
+ y = MAX (baseline - self->above, 0);
+ else
+ y = CLAMP (baseline - self->above / 2, 0, height - self->above);
+ gtk_snapshot_translate (snapshot, &GRAPHENE_POINT_INIT (0, y));
+ }
+
+ bounds.origin.x = 0;
+ bounds.origin.y = 0;
+ bounds.size.width = self->across;
+ bounds.size.height = self->above;
+
+ if (self->below >= 0)
+ gtk_snapshot_append_color (snapshot, &(GdkRGBA){1, 1, 0, 0.2}, &bounds);
+ else
+ gtk_snapshot_append_color (snapshot, &(GdkRGBA){0, 1, 0, 0.2}, &bounds);
+
+ outline = GSK_ROUNDED_RECT_INIT (0, 0, self->across, self->above);
+ for (int i = 0; i < 4; i++)
+ {
+ widths[i] = 1.;
+ gdk_rgba_parse (&colors[i], "black");
+ }
+
+ gtk_snapshot_append_border (snapshot, &outline, widths, colors);
+
+ gtk_snapshot_restore (snapshot);
+
+ if (self->below >= 0)
+ {
+ gtk_snapshot_save (snapshot);
+
+ if (baseline > -1)
+ gtk_snapshot_translate (snapshot, &GRAPHENE_POINT_INIT (0, baseline));
+ else
+ gtk_snapshot_translate (snapshot, &GRAPHENE_POINT_INIT (0, self->above));
+ bounds.origin.x = 0;
+ bounds.origin.y = 0;
+ bounds.size.width = self->across;
+ bounds.size.height = self->below;
+ gtk_snapshot_append_color (snapshot, &(GdkRGBA){0, 0, 1, 0.2}, &bounds);
+
+ outline = GSK_ROUNDED_RECT_INIT (0, 0, self->across, self->below);
+ for (int i = 0; i < 4; i++)
+ {
+ widths[i] = 1.;
+ gdk_rgba_parse (&colors[i], "black");
+ }
+
+ gtk_snapshot_append_border (snapshot, &outline, widths, colors);
+
+ gtk_snapshot_restore (snapshot);
+ }
+}
+
+
+static void
+baseline_widget_class_init (BaselineWidgetClass *class)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (class);
+ GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
+
+ object_class->set_property = baseline_widget_set_property;
+ object_class->get_property = baseline_widget_get_property;
+
+ widget_class->snapshot = baseline_widget_snapshot;
+ widget_class->measure = baseline_widget_measure;
+
+ g_object_class_install_property (object_class, PROP_ABOVE,
+ g_param_spec_int ("above", NULL, NULL, 0, G_MAXINT, 0, G_PARAM_READWRITE));
+ g_object_class_install_property (object_class, PROP_BELOW,
+ g_param_spec_int ("below", NULL, NULL, -1, G_MAXINT, 0, G_PARAM_READWRITE));
+ g_object_class_install_property (object_class, PROP_ACROSS,
+ g_param_spec_int ("across", NULL, NULL, 0, G_MAXINT, 0, G_PARAM_READWRITE));
+}
+
+static GtkWidget *
+baseline_widget_new (int above, int below, int across)
+{
+ return g_object_new (BASELINE_TYPE_WIDGET,
+ "above", above,
+ "below", below,
+ "across", across,
+ "valign", GTK_ALIGN_BASELINE,
+ NULL);
+}
+
+int
+main (int argc, char *argv[])
+{
+ GtkWidget *window, *header;
+ GtkWidget *stack, *switcher;
+ GtkWidget *box, *box1;
+ GtkWidget *grid;
+ GtkWidget *child;
+
+ gtk_init ();
+
+ window = gtk_window_new ();
+
+ header = gtk_header_bar_new ();
+ gtk_window_set_titlebar (GTK_WINDOW (window), header);
+
+ stack = gtk_stack_new ();
+ gtk_window_set_child (GTK_WINDOW (window), stack);
+
+ switcher = gtk_stack_switcher_new ();
+ gtk_stack_switcher_set_stack (GTK_STACK_SWITCHER (switcher), GTK_STACK (stack));
+
+ gtk_header_bar_set_title_widget (GTK_HEADER_BAR (header), switcher);
+
+ box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 20);
+ gtk_widget_set_margin_top (box, 20);
+ gtk_widget_set_margin_bottom (box, 20);
+ gtk_widget_set_margin_start (box, 20);
+ gtk_widget_set_margin_end (box, 20);
+ gtk_widget_set_valign (box, GTK_ALIGN_BASELINE);
+
+ gtk_stack_add_titled (GTK_STACK (stack), box, "boxes", "Boxes");
+
+ box1 = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
+ gtk_widget_set_halign (box1, GTK_ALIGN_FILL);
+ gtk_widget_set_valign (box1, GTK_ALIGN_BASELINE);
+ gtk_widget_set_hexpand (box1, TRUE);
+
+ child = baseline_widget_new (20, 10, 20);
+ gtk_box_append (GTK_BOX (box1), child);
+
+ child = baseline_widget_new (5, 20, 20);
+ gtk_box_append (GTK_BOX (box1), child);
+
+ child = baseline_widget_new (25, -1, 20);
+ gtk_box_append (GTK_BOX (box1), child);
+
+ child = baseline_widget_new (25, 20, 30);
+ gtk_box_append (GTK_BOX (box1), child);
+
+ gtk_box_append (GTK_BOX (box), box1);
+
+ box1 = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
+ gtk_widget_set_halign (box1, GTK_ALIGN_FILL);
+ gtk_widget_set_valign (box1, GTK_ALIGN_BASELINE);
+ gtk_widget_set_hexpand (box1, TRUE);
+
+ child = baseline_widget_new (10, 15, 10);
+ gtk_box_append (GTK_BOX (box1), child);
+
+ child = baseline_widget_new (80, -1, 20);
+ gtk_box_append (GTK_BOX (box1), child);
+
+ child = baseline_widget_new (60, 15, 20);
+ gtk_box_append (GTK_BOX (box1), child);
+
+ child = baseline_widget_new (5, 10, 30);
+ gtk_box_append (GTK_BOX (box1), child);
+
+ gtk_box_append (GTK_BOX (box), box1);
+
+ box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 20);
+ gtk_widget_set_margin_top (box, 20);
+ gtk_widget_set_margin_bottom (box, 20);
+ gtk_widget_set_margin_start (box, 20);
+ gtk_widget_set_margin_end (box, 20);
+ gtk_widget_set_valign (box, GTK_ALIGN_BASELINE);
+
+ grid = gtk_grid_new ();
+ gtk_widget_set_valign (grid, GTK_ALIGN_BASELINE);
+ gtk_widget_set_hexpand (grid, TRUE);
+
+ child = baseline_widget_new (20, 10, 20);
+ gtk_grid_attach (GTK_GRID (grid), child, 0, 0, 1, 1);
+
+ child = baseline_widget_new (5, 20, 20);
+ gtk_grid_attach (GTK_GRID (grid), child, 1, 0, 1, 1);
+
+ child = baseline_widget_new (25, -1, 20);
+ gtk_grid_attach (GTK_GRID (grid), child, 0, 1, 1, 1);
+
+ child = baseline_widget_new (25, 20, 30);
+ gtk_grid_attach (GTK_GRID (grid), child, 1, 1, 1, 1);
+
+ gtk_box_append (GTK_BOX (box), grid);
+
+ grid = gtk_grid_new ();
+ gtk_widget_set_valign (grid, GTK_ALIGN_BASELINE);
+ gtk_widget_set_hexpand (grid, TRUE);
+
+ child = baseline_widget_new (10, 15, 10);
+ gtk_grid_attach (GTK_GRID (grid), child, 0, 0, 1, 1);
+
+ child = baseline_widget_new (80, -1, 20);
+ gtk_grid_attach (GTK_GRID (grid), child, 1, 0, 1, 1);
+
+ child = baseline_widget_new (60, 15, 20);
+ gtk_grid_attach (GTK_GRID (grid), child, 0, 1, 1, 1);
+
+ child = baseline_widget_new (5, 10, 30);
+ gtk_grid_attach (GTK_GRID (grid), child, 1, 1, 1, 1);
+
+ gtk_box_append (GTK_BOX (box), grid);
+
+ gtk_stack_add_titled (GTK_STACK (stack), box, "grids", "Grids");
+
+ box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 20);
+ gtk_widget_set_margin_top (box, 20);
+ gtk_widget_set_margin_bottom (box, 20);
+ gtk_widget_set_margin_start (box, 20);
+ gtk_widget_set_margin_end (box, 20);
+ gtk_widget_set_valign (box, GTK_ALIGN_BASELINE);
+
+ child = baseline_widget_new (60, 15, 20);
+ gtk_box_append (GTK_BOX (box), child);
+
+ child = gtk_label_new ("Label");
+ gtk_widget_set_valign (child, GTK_ALIGN_BASELINE);
+ gtk_box_append (GTK_BOX (box), child);
+
+ child = gtk_entry_new ();
+ gtk_editable_set_text (GTK_EDITABLE (child), "Entry");
+ gtk_editable_set_width_chars (GTK_EDITABLE (child), 10);
+ gtk_widget_set_valign (child, GTK_ALIGN_BASELINE);
+ gtk_box_append (GTK_BOX (box), child);
+
+ child = gtk_password_entry_new ();
+ gtk_editable_set_text (GTK_EDITABLE (child), "Password");
+ gtk_editable_set_width_chars (GTK_EDITABLE (child), 10);
+ gtk_widget_set_valign (child, GTK_ALIGN_BASELINE);
+ gtk_box_append (GTK_BOX (box), child);
+
+ child = gtk_spin_button_new_with_range (0, 100, 1);
+ gtk_widget_set_valign (child, GTK_ALIGN_BASELINE);
+ gtk_box_append (GTK_BOX (box), child);
+
+ child = gtk_spin_button_new_with_range (0, 100, 1);
+ gtk_orientable_set_orientation (GTK_ORIENTABLE (child), GTK_ORIENTATION_VERTICAL);
+ gtk_widget_set_valign (child, GTK_ALIGN_BASELINE);
+ gtk_box_append (GTK_BOX (box), child);
+
+ child = gtk_switch_new ();
+ gtk_widget_set_valign (child, GTK_ALIGN_BASELINE);
+ gtk_box_append (GTK_BOX (box), child);
+
+ child = gtk_scale_new_with_range (GTK_ORIENTATION_HORIZONTAL, 0, 100, 1);
+ gtk_widget_set_size_request (child, 100, 0);
+ //gtk_scale_add_mark (GTK_SCALE (child), 50, GTK_POS_BOTTOM, "50");
+ gtk_widget_set_valign (child, GTK_ALIGN_BASELINE);
+ gtk_box_append (GTK_BOX (box), child);
+
+ gtk_stack_add_titled (GTK_STACK (stack), box, "controls", "Controls");
+
+ box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 20);
+ gtk_widget_set_margin_top (box, 20);
+ gtk_widget_set_margin_bottom (box, 20);
+ gtk_widget_set_margin_start (box, 20);
+ gtk_widget_set_margin_end (box, 20);
+ gtk_widget_set_valign (box, GTK_ALIGN_BASELINE);
+
+ child = baseline_widget_new (60, 15, 20);
+ gtk_widget_set_hexpand (child, TRUE);
+ gtk_box_append (GTK_BOX (box), child);
+
+ child = gtk_label_new ("Label");
+ gtk_widget_set_hexpand (child, TRUE);
+ gtk_widget_set_valign (child, GTK_ALIGN_BASELINE);
+ gtk_box_append (GTK_BOX (box), child);
+
+ child = gtk_label_new ("Two\nlines");
+ gtk_widget_set_hexpand (child, TRUE);
+ gtk_widget_set_valign (child, GTK_ALIGN_BASELINE);
+ gtk_box_append (GTK_BOX (box), child);
+
+ child = gtk_label_new ("<span size='large'>Large</span>");
+ gtk_widget_set_hexpand (child, TRUE);
+ gtk_label_set_use_markup (GTK_LABEL (child), TRUE);
+ gtk_widget_set_valign (child, GTK_ALIGN_BASELINE);
+ gtk_box_append (GTK_BOX (box), child);
+
+ child = gtk_label_new ("<span size='xx-large'>Huge</span>");
+ gtk_widget_set_hexpand (child, TRUE);
+ gtk_label_set_use_markup (GTK_LABEL (child), TRUE);
+ gtk_widget_set_valign (child, GTK_ALIGN_BASELINE);
+ gtk_box_append (GTK_BOX (box), child);
+
+ child = gtk_label_new ("<span underline='double'>Underlined</span>");
+ gtk_widget_set_hexpand (child, TRUE);
+ gtk_label_set_use_markup (GTK_LABEL (child), TRUE);
+ gtk_widget_set_valign (child, GTK_ALIGN_BASELINE);
+ gtk_box_append (GTK_BOX (box), child);
+
+ child = gtk_label_new ("♥️");
+ gtk_widget_set_hexpand (child, TRUE);
+ gtk_widget_set_valign (child, GTK_ALIGN_BASELINE);
+ gtk_box_append (GTK_BOX (box), child);
+
+ child = gtk_image_new_from_icon_name ("edit-copy-symbolic");
+ gtk_widget_set_hexpand (child, TRUE);
+ gtk_widget_set_valign (child, GTK_ALIGN_BASELINE);
+ gtk_box_append (GTK_BOX (box), child);
+
+ gtk_stack_add_titled (GTK_STACK (stack), box, "labels", "Labels");
+
+ gtk_window_present (GTK_WINDOW (window));
+
+ while (g_list_model_get_n_items (gtk_window_get_toplevels ()) > 0)
+ g_main_context_iteration (NULL, FALSE);
+
+ return 0;
+}
projects / gtk4.git / commitdiff