forked from AuroraMiddleware/gtk
acbff85402
As GtkCssNode has the visibility concept, it makes sense to mirror it in gadgets. Do what visibility does in widgets: Hidden gadgets can't be drawn or allocated and request a 0x0 size. Note that just like widgets, gadget visibility must not be changed in size request, allocate or draw handlers. GtkWidget::child-visible has no equivalent yet, code will have to emulate that manually.
114 lines
6.2 KiB
C
114 lines
6.2 KiB
C
/*
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* Copyright © 2015 Red Hat Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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* Authors: Benjamin Otte <otte@gnome.org>
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*/
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#ifndef __GTK_CSS_GADGET_PRIVATE_H__
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#define __GTK_CSS_GADGET_PRIVATE_H__
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#include <cairo.h>
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#include <glib-object.h>
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#include "gtk/gtkwidget.h"
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#include "gtk/gtkcssstylechangeprivate.h"
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#include "gtk/gtkcsstypesprivate.h"
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G_BEGIN_DECLS
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#define GTK_TYPE_CSS_GADGET (gtk_css_gadget_get_type ())
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#define GTK_CSS_GADGET(obj) (G_TYPE_CHECK_INSTANCE_CAST (obj, GTK_TYPE_CSS_GADGET, GtkCssGadget))
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#define GTK_CSS_GADGET_CLASS(cls) (G_TYPE_CHECK_CLASS_CAST (cls, GTK_TYPE_CSS_GADGET, GtkCssGadgetClass))
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#define GTK_IS_CSS_GADGET(obj) (G_TYPE_CHECK_INSTANCE_TYPE (obj, GTK_TYPE_CSS_GADGET))
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#define GTK_IS_CSS_GADGET_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE (obj, GTK_TYPE_CSS_GADGET))
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#define GTK_CSS_GADGET_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_CSS_GADGET, GtkCssGadgetClass))
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typedef struct _GtkCssGadget GtkCssGadget;
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typedef struct _GtkCssGadgetClass GtkCssGadgetClass;
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struct _GtkCssGadget
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{
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GObject parent;
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};
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struct _GtkCssGadgetClass
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{
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GObjectClass parent_class;
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void (* get_preferred_size) (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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void (* allocate) (GtkCssGadget *gadget,
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const GtkAllocation *allocation,
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int baseline,
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GtkAllocation *out_clip);
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gboolean (* draw) (GtkCssGadget *gadget,
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cairo_t *cr,
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int x,
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int y,
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int width,
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int height);
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void (* style_changed) (GtkCssGadget *gadget,
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GtkCssStyleChange *change);
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};
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GType gtk_css_gadget_get_type (void) G_GNUC_CONST;
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GtkCssNode * gtk_css_gadget_get_node (GtkCssGadget *gadget);
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GtkCssStyle * gtk_css_gadget_get_style (GtkCssGadget *gadget);
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GtkWidget * gtk_css_gadget_get_owner (GtkCssGadget *gadget);
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void gtk_css_gadget_set_visible (GtkCssGadget *gadget,
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gboolean visible);
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gboolean gtk_css_gadget_get_visible (GtkCssGadget *gadget);
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void gtk_css_gadget_add_class (GtkCssGadget *gadget,
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const char *name);
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void gtk_css_gadget_remove_class (GtkCssGadget *gadget,
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const char *name);
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void gtk_css_gadget_get_preferred_size (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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void gtk_css_gadget_allocate (GtkCssGadget *gadget,
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const GtkAllocation *allocation,
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int baseline,
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GtkAllocation *out_clip);
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void gtk_css_gadget_draw (GtkCssGadget *gadget,
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cairo_t *cr);
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void gtk_css_gadget_get_border_allocation (GtkCssGadget *gadget,
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GtkAllocation *allocation,
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int *baseline);
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void gtk_css_gadget_get_content_allocation (GtkCssGadget *gadget,
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GtkAllocation *allocation,
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int *baseline);
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G_END_DECLS
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#endif /* __GTK_CSS_GADGET_PRIVATE_H__ */
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