/usr/include/gtk-3.0/gtk/gtkthemingengine.h is in libgtk-3-dev 3.4.1-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (C) 2010 Carlos Garnacho <carlosg@gnome.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
#error "Only <gtk/gtk.h> can be included directly."
#endif
#ifndef __GTK_THEMING_ENGINE_H__
#define __GTK_THEMING_ENGINE_H__
#include <glib-object.h>
#include <cairo.h>
#include <gtk/gtkborder.h>
#include <gtk/gtkenums.h>
#include <gtk/gtkstyleproperties.h>
#include <gtk/gtktypes.h>
G_BEGIN_DECLS
#define GTK_TYPE_THEMING_ENGINE (gtk_theming_engine_get_type ())
#define GTK_THEMING_ENGINE(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), GTK_TYPE_THEMING_ENGINE, GtkThemingEngine))
#define GTK_THEMING_ENGINE_CLASS(c) (G_TYPE_CHECK_CLASS_CAST ((c), GTK_TYPE_THEMING_ENGINE, GtkThemingEngineClass))
#define GTK_IS_THEMING_ENGINE(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), GTK_TYPE_THEMING_ENGINE))
#define GTK_IS_THEMING_ENGINE_CLASS(c) (G_TYPE_CHECK_CLASS_TYPE ((c), GTK_TYPE_THEMING_ENGINE))
#define GTK_THEMING_ENGINE_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), GTK_TYPE_THEMING_ENGINE, GtkThemingEngineClass))
typedef struct _GtkThemingEngine GtkThemingEngine;
typedef struct GtkThemingEnginePrivate GtkThemingEnginePrivate;
typedef struct _GtkThemingEngineClass GtkThemingEngineClass;
struct _GtkThemingEngine
{
GObject parent_object;
GtkThemingEnginePrivate *priv;
};
/**
* GtkThemingEngineClass:
* @parent_class: The parent class.
* @render_line: Renders a line between two points.
* @render_background: Renders the background area of a widget region.
* @render_frame: Renders the frame around a widget area.
* @render_frame_gap: Renders the frame around a widget area with a gap in it.
* @render_extension: Renders a extension to a box, usually a notebook tab.
* @render_check: Renders a checkmark, as in #GtkCheckButton.
* @render_option: Renders an option, as in #GtkRadioButton.
* @render_arrow: Renders an arrow pointing to a certain direction.
* @render_expander: Renders an element what will expose/expand part of
* the UI, as in #GtkExpander.
* @render_focus: Renders the focus indicator.
* @render_layout: Renders a #PangoLayout
* @render_slider: Renders a slider control, as in #GtkScale.
* @render_handle: Renders a handle to drag UI elements, as in #GtkPaned.
* @render_activity: Renders an area displaying activity, such as in #GtkSpinner,
* or #GtkProgressBar.
* @render_icon_pixbuf: Renders an icon as a #GdkPixbuf.
* @render_icon: Renders an icon given as a #GdkPixbuf.
*
* Base class for theming engines.
*/
struct _GtkThemingEngineClass
{
GObjectClass parent_class;
void (* render_line) (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x0,
gdouble y0,
gdouble x1,
gdouble y1);
void (* render_background) (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height);
void (* render_frame) (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height);
void (* render_frame_gap) (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height,
GtkPositionType gap_side,
gdouble xy0_gap,
gdouble xy1_gap);
void (* render_extension) (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height,
GtkPositionType gap_side);
void (* render_check) (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height);
void (* render_option) (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height);
void (* render_arrow) (GtkThemingEngine *engine,
cairo_t *cr,
gdouble angle,
gdouble x,
gdouble y,
gdouble size);
void (* render_expander) (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height);
void (* render_focus) (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height);
void (* render_layout) (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
PangoLayout *layout);
void (* render_slider) (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height,
GtkOrientation orientation);
void (* render_handle) (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height);
void (* render_activity) (GtkThemingEngine *engine,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height);
GdkPixbuf * (* render_icon_pixbuf) (GtkThemingEngine *engine,
const GtkIconSource *source,
GtkIconSize size);
void (* render_icon) (GtkThemingEngine *engine,
cairo_t *cr,
GdkPixbuf *pixbuf,
gdouble x,
gdouble y);
/*< private >*/
gpointer padding[15];
};
GType gtk_theming_engine_get_type (void) G_GNUC_CONST;
/* function implemented in gtkcsscustomproperty.c */
void gtk_theming_engine_register_property (const gchar *name_space,
GtkStylePropertyParser parse_func,
GParamSpec *pspec);
void gtk_theming_engine_get_property (GtkThemingEngine *engine,
const gchar *property,
GtkStateFlags state,
GValue *value);
void gtk_theming_engine_get_valist (GtkThemingEngine *engine,
GtkStateFlags state,
va_list args);
void gtk_theming_engine_get (GtkThemingEngine *engine,
GtkStateFlags state,
...) G_GNUC_NULL_TERMINATED;
void gtk_theming_engine_get_style_property (GtkThemingEngine *engine,
const gchar *property_name,
GValue *value);
void gtk_theming_engine_get_style_valist (GtkThemingEngine *engine,
va_list args);
void gtk_theming_engine_get_style (GtkThemingEngine *engine,
...);
gboolean gtk_theming_engine_lookup_color (GtkThemingEngine *engine,
const gchar *color_name,
GdkRGBA *color);
const GtkWidgetPath * gtk_theming_engine_get_path (GtkThemingEngine *engine);
gboolean gtk_theming_engine_has_class (GtkThemingEngine *engine,
const gchar *style_class);
gboolean gtk_theming_engine_has_region (GtkThemingEngine *engine,
const gchar *style_region,
GtkRegionFlags *flags);
GtkStateFlags gtk_theming_engine_get_state (GtkThemingEngine *engine);
gboolean gtk_theming_engine_state_is_running (GtkThemingEngine *engine,
GtkStateType state,
gdouble *progress);
GtkTextDirection gtk_theming_engine_get_direction (GtkThemingEngine *engine);
GtkJunctionSides gtk_theming_engine_get_junction_sides (GtkThemingEngine *engine);
/* Helper functions */
void gtk_theming_engine_get_color (GtkThemingEngine *engine,
GtkStateFlags state,
GdkRGBA *color);
void gtk_theming_engine_get_background_color (GtkThemingEngine *engine,
GtkStateFlags state,
GdkRGBA *color);
void gtk_theming_engine_get_border_color (GtkThemingEngine *engine,
GtkStateFlags state,
GdkRGBA *color);
void gtk_theming_engine_get_border (GtkThemingEngine *engine,
GtkStateFlags state,
GtkBorder *border);
void gtk_theming_engine_get_padding (GtkThemingEngine *engine,
GtkStateFlags state,
GtkBorder *padding);
void gtk_theming_engine_get_margin (GtkThemingEngine *engine,
GtkStateFlags state,
GtkBorder *margin);
const PangoFontDescription * gtk_theming_engine_get_font (GtkThemingEngine *engine,
GtkStateFlags state);
GtkThemingEngine * gtk_theming_engine_load (const gchar *name);
GdkScreen * gtk_theming_engine_get_screen (GtkThemingEngine *engine);
G_END_DECLS
#endif /* __GTK_THEMING_ENGINE_H__ */
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