spinner: Use a gadget
This gives us min-width/height support. Currently, the spinner still has a hardcoded minimum size of 16 and doesn't grow beyond 32. We may want to revisit that at some point.
This commit is contained in:
Matthias Clasen
321
gtk/gtkspinner.c
321
gtk/gtkspinner.c
@ -38,6 +38,7 @@
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#include "gtkstylecontextprivate.h"
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#include "gtkwidgetprivate.h"
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#include "a11y/gtkspinneraccessible.h"
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#include "gtkcsscustomgadgetprivate.h"
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/**
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@ -59,8 +60,6 @@
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*/
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#define SPINNER_SIZE 16
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enum {
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PROP_0,
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PROP_ACTIVE
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@ -68,65 +67,157 @@ enum {
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struct _GtkSpinnerPrivate
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{
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GtkCssGadget *gadget;
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gboolean active;
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};
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static gboolean gtk_spinner_draw (GtkWidget *widget,
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cairo_t *cr);
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static void gtk_spinner_size_allocate (GtkWidget *widget,
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GtkAllocation *allocation);
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static void gtk_spinner_get_property (GObject *object,
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guint param_id,
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GValue *value,
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GParamSpec *pspec);
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static void gtk_spinner_set_property (GObject *object,
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guint param_id,
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const GValue *value,
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GParamSpec *pspec);
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static void gtk_spinner_set_active (GtkSpinner *spinner,
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gboolean active);
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static void gtk_spinner_get_preferred_width (GtkWidget *widget,
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gint *minimum_size,
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gint *natural_size);
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static void gtk_spinner_get_preferred_height (GtkWidget *widget,
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gint *minimum_size,
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gint *natural_size);
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G_DEFINE_TYPE_WITH_PRIVATE (GtkSpinner, gtk_spinner, GTK_TYPE_WIDGET)
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static void
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gtk_spinner_class_init (GtkSpinnerClass *klass)
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gtk_spinner_finalize (GObject *object)
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{
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GObjectClass *gobject_class;
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GtkWidgetClass *widget_class;
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GtkSpinner *spinner = GTK_SPINNER (object);
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gobject_class = G_OBJECT_CLASS(klass);
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gobject_class->get_property = gtk_spinner_get_property;
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gobject_class->set_property = gtk_spinner_set_property;
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g_clear_object (&spinner->priv->gadget);
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widget_class = GTK_WIDGET_CLASS(klass);
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widget_class->size_allocate = gtk_spinner_size_allocate;
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widget_class->draw = gtk_spinner_draw;
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widget_class->get_preferred_width = gtk_spinner_get_preferred_width;
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widget_class->get_preferred_height = gtk_spinner_get_preferred_height;
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G_OBJECT_CLASS (gtk_spinner_parent_class)->finalize (object);
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}
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/* GtkSpinner:active:
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*
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* Whether the spinner is active
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*
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* Since: 2.20
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*/
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g_object_class_install_property (gobject_class,
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PROP_ACTIVE,
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g_param_spec_boolean ("active",
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P_("Active"),
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P_("Whether the spinner is active"),
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FALSE,
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GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
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static void
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gtk_spinner_measure (GtkCssGadget *gadget,
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GtkOrientation orientation,
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gint for_size,
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gint *minimum,
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gint *natural,
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gint *minimum_baseline,
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gint *natural_baseline,
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gpointer data)
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{
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*minimum = *natural = 16;
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}
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gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_SPINNER_ACCESSIBLE);
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gtk_widget_class_set_css_name (widget_class, "spinner");
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static void
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gtk_spinner_get_preferred_width (GtkWidget *widget,
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gint *minimum,
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gint *natural)
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{
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gtk_css_gadget_get_preferred_size (GTK_SPINNER (widget)->priv->gadget,
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GTK_ORIENTATION_HORIZONTAL,
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-1,
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minimum, natural,
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NULL, NULL);
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}
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static void
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gtk_spinner_get_preferred_height (GtkWidget *widget,
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gint *minimum,
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gint *natural)
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{
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gtk_css_gadget_get_preferred_size (GTK_SPINNER (widget)->priv->gadget,
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GTK_ORIENTATION_VERTICAL,
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-1,
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minimum, natural,
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NULL, NULL);
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}
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static void
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gtk_spinner_allocate (GtkCssGadget *gadget,
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const GtkAllocation *allocation,
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gint baseline,
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GtkAllocation *out_clip,
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gpointer data)
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{
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GtkWidget *widget;
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GtkStyleContext *context;
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gint size;
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widget = gtk_css_gadget_get_owner (gadget);
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context = gtk_widget_get_style_context (widget);
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size = MIN (allocation->width, allocation->height);
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gtk_widget_set_allocation (widget, allocation);
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_gtk_style_context_get_icon_extents (context,
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out_clip,
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allocation->x + (allocation->width - size) / 2,
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allocation->y + (allocation->height - size) / 2,
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size, size);
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gdk_rectangle_union (out_clip, allocation, out_clip);
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}
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static void
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gtk_spinner_size_allocate (GtkWidget *widget,
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GtkAllocation *allocation)
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{
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GtkAllocation clip;
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gtk_widget_set_allocation (widget, allocation);
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gtk_css_gadget_allocate (GTK_SPINNER (widget)->priv->gadget,
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allocation,
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gtk_widget_get_allocated_baseline (widget),
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&clip);
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gtk_widget_set_clip (widget, &clip);
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}
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static gboolean
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gtk_spinner_draw (GtkWidget *widget,
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cairo_t *cr)
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{
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gtk_css_gadget_draw (GTK_SPINNER (widget)->priv->gadget, cr);
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return FALSE;
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}
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static gboolean
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gtk_spinner_render (GtkCssGadget *gadget,
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cairo_t *cr,
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gint x,
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gint y,
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gint width,
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gint height,
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gpointer data)
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{
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GtkWidget *widget;
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GtkStyleContext *context;
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gint size;
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widget = gtk_css_gadget_get_owner (gadget);
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context = gtk_widget_get_style_context (widget);
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size = MIN (width, height);
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gtk_render_activity (context, cr,
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(width - size) / 2,
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(height - size) / 2,
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size, size);
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return FALSE;
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}
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static void
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gtk_spinner_set_active (GtkSpinner *spinner,
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gboolean active)
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{
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GtkSpinnerPrivate *priv = spinner->priv;
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active = !!active;
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if (priv->active != active)
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{
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priv->active = active;
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g_object_notify (G_OBJECT (spinner), "active");
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if (active)
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gtk_widget_set_state_flags (GTK_WIDGET (spinner),
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GTK_STATE_FLAG_CHECKED, FALSE);
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else
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gtk_widget_unset_state_flags (GTK_WIDGET (spinner),
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GTK_STATE_FLAG_CHECKED);
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}
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}
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static void
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@ -165,98 +256,58 @@ gtk_spinner_set_property (GObject *object,
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}
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}
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static void
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gtk_spinner_class_init (GtkSpinnerClass *klass)
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{
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GObjectClass *gobject_class;
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GtkWidgetClass *widget_class;
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gobject_class = G_OBJECT_CLASS(klass);
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gobject_class->finalize = gtk_spinner_finalize;
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gobject_class->get_property = gtk_spinner_get_property;
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gobject_class->set_property = gtk_spinner_set_property;
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widget_class = GTK_WIDGET_CLASS(klass);
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widget_class->size_allocate = gtk_spinner_size_allocate;
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widget_class->draw = gtk_spinner_draw;
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widget_class->get_preferred_width = gtk_spinner_get_preferred_width;
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widget_class->get_preferred_height = gtk_spinner_get_preferred_height;
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/* GtkSpinner:active:
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*
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* Whether the spinner is active
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*
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* Since: 2.20
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*/
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g_object_class_install_property (gobject_class,
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PROP_ACTIVE,
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g_param_spec_boolean ("active",
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P_("Active"),
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P_("Whether the spinner is active"),
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FALSE,
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GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
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gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_SPINNER_ACCESSIBLE);
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gtk_widget_class_set_css_name (widget_class, "spinner");
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}
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static void
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gtk_spinner_init (GtkSpinner *spinner)
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{
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GtkCssNode *widget_node;
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spinner->priv = gtk_spinner_get_instance_private (spinner);
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gtk_widget_set_has_window (GTK_WIDGET (spinner), FALSE);
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}
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static void
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gtk_spinner_get_preferred_width (GtkWidget *widget,
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gint *minimum_size,
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gint *natural_size)
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{
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*minimum_size = SPINNER_SIZE;
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*natural_size = SPINNER_SIZE;
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}
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static void
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gtk_spinner_get_preferred_height (GtkWidget *widget,
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gint *minimum_size,
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gint *natural_size)
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{
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*minimum_size = SPINNER_SIZE;
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*natural_size = SPINNER_SIZE;
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}
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static void
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gtk_spinner_size_allocate (GtkWidget *widget,
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GtkAllocation *allocation)
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{
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GtkStyleContext *context;
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GtkAllocation clip;
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gint size;
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context = gtk_widget_get_style_context (widget);
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size = MIN (allocation->width, allocation->height);
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_gtk_style_context_get_icon_extents (context,
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&clip,
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allocation->x + (allocation->width - size) / 2,
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allocation->y + (allocation->height - size) / 2,
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size, size);
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gdk_rectangle_union (&clip, allocation, &clip);
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gtk_widget_set_allocation (widget, allocation);
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gtk_widget_set_clip (widget, &clip);
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}
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static gboolean
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gtk_spinner_draw (GtkWidget *widget,
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cairo_t *cr)
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{
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GtkStyleContext *context;
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gint width, height;
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gint size;
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context = gtk_widget_get_style_context (widget);
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width = gtk_widget_get_allocated_width (widget);
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height = gtk_widget_get_allocated_height (widget);
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size = MIN (width, height);
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gtk_render_activity (context, cr,
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(width - size) / 2,
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(height - size) / 2,
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size, size);
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return FALSE;
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}
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static void
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gtk_spinner_set_active (GtkSpinner *spinner,
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gboolean active)
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{
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GtkSpinnerPrivate *priv = spinner->priv;
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active = !!active;
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if (priv->active != active)
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{
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priv->active = active;
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g_object_notify (G_OBJECT (spinner), "active");
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if (active)
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gtk_widget_set_state_flags (GTK_WIDGET (spinner),
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GTK_STATE_FLAG_CHECKED, FALSE);
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else
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gtk_widget_unset_state_flags (GTK_WIDGET (spinner),
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GTK_STATE_FLAG_CHECKED);
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}
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widget_node = gtk_widget_get_css_node (GTK_WIDGET (spinner));
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spinner->priv->gadget = gtk_css_custom_gadget_new_for_node (widget_node,
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GTK_WIDGET (spinner),
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gtk_spinner_measure,
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gtk_spinner_allocate,
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gtk_spinner_render,
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NULL,
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NULL);
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}
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/**
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