Pileus Git - ~andy/gtk/blob - gtk/gtkthemingengine.h

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 2010 Carlos Garnacho <carlosg@gnome.org>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 #ifndef __GTK_THEMING_ENGINE_H__
  21 #define __GTK_THEMING_ENGINE_H__
  22
  23 #include <glib-object.h>
  24 #include <cairo.h>
  25
  26 #include <gtk/gtkstylecontext.h>
  27 #include <gtk/gtkwidgetpath.h>
  28 #include <gtk/gtkenums.h>
  29
  30 G_BEGIN_DECLS
  31
  32 #define GTK_TYPE_THEMING_ENGINE         (gtk_theming_engine_get_type ())
  33 #define GTK_THEMING_ENGINE(o)           (G_TYPE_CHECK_INSTANCE_CAST ((o), GTK_TYPE_THEMING_ENGINE, GtkThemingEngine))
  34 #define GTK_THEMING_ENGINE_CLASS(c)     (G_TYPE_CHECK_CLASS_CAST    ((c), GTK_TYPE_THEMING_ENGINE, GtkThemingEngineClass))
  35 #define GTK_IS_THEMING_ENGINE(o)        (G_TYPE_CHECK_INSTANCE_TYPE ((o), GTK_TYPE_THEMING_ENGINE))
  36 #define GTK_IS_THEMING_ENGINE_CLASS(c)  (G_TYPE_CHECK_CLASS_TYPE    ((c), GTK_TYPE_THEMING_ENGINE))
  37 #define GTK_THEMING_ENGINE_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS  ((o), GTK_TYPE_THEMING_ENGINE, GtkThemingEngineClass))
  38
  39 typedef struct _GtkThemingEngine GtkThemingEngine;
  40 typedef struct _GtkThemingEngineClass GtkThemingEngineClass;
  41
  42 struct _GtkThemingEngine
  43 {
  44   GObject parent_object;
  45   gpointer priv;
  46 };
  47
  48 /**
  49  * GtkThemingEngineClass
  50  * @parent_class: The parent class.
  51  * @render_line: Renders a line between two points.
  52  * @render_background: Renders the background area of a widget region.
  53  * @render_frame: Renders the frame around a widget area.
  54  * @render_frame_gap: Renders the frame around a widget area with a gap in it.
  55  * @render_extension: Renders a extension to a box, usually a notebook tab.
  56  * @render_check: Renders a checkmark, as in #GtkCheckButton.
  57  * @render_option: Renders an option, as in #GtkRadioButton.
  58  * @render_arrow: Renders an arrow pointing to a certain direction.
  59  * @render_expander: Renders an element what will expose/expand part of
  60  *                   the UI, as in #GtkExpander.
  61  * @render_focus: Renders the focus indicator.
  62  * @render_layout: Renders a #PangoLayout
  63  * @render_slider: Renders a slider control, as in #GtkScale.
  64  * @render_handle: Renders a handle to drag UI elements, as in #GtkPaned.
  65  *
  66  * Base class for theming engines.
  67  */
  68 struct _GtkThemingEngineClass
  69 {
  70   GObjectClass parent_class;
  71
  72   void (* render_line) (GtkThemingEngine *engine,
  73                         cairo_t          *cr,
  74                         gdouble           x0,
  75                         gdouble           y0,
  76                         gdouble           x1,
  77                         gdouble           y1);
  78   void (* render_background) (GtkThemingEngine *engine,
  79                               cairo_t          *cr,
  80                               gdouble           x,
  81                               gdouble           y,
  82                               gdouble           width,
  83                               gdouble           height);
  84   void (* render_frame) (GtkThemingEngine *engine,
  85                          cairo_t          *cr,
  86                          gdouble           x,
  87                          gdouble           y,
  88                          gdouble           width,
  89                          gdouble           height);
  90   void (* render_frame_gap) (GtkThemingEngine *engine,
  91                              cairo_t          *cr,
  92                              gdouble           x,
  93                              gdouble           y,
  94                              gdouble           width,
  95                              gdouble           height,
  96                              GtkPositionType   gap_side,
  97                              gdouble           xy0_gap,
  98                              gdouble           xy1_gap);
  99   void (* render_extension) (GtkThemingEngine *engine,
 100                              cairo_t          *cr,
 101                              gdouble           x,
 102                              gdouble           y,
 103                              gdouble           width,
 104                              gdouble           height,
 105                              GtkPositionType   gap_side);
 106   void (* render_check) (GtkThemingEngine *engine,
 107                          cairo_t          *cr,
 108                          gdouble           x,
 109                          gdouble           y,
 110                          gdouble           width,
 111                          gdouble           height);
 112   void (* render_option) (GtkThemingEngine *engine,
 113                           cairo_t          *cr,
 114                           gdouble           x,
 115                           gdouble           y,
 116                           gdouble           width,
 117                           gdouble           height);
 118   void (* render_arrow) (GtkThemingEngine *engine,
 119                          cairo_t          *cr,
 120                          gdouble           angle,
 121                          gdouble           x,
 122                          gdouble           y,
 123                          gdouble           size);
 124   void (* render_expander) (GtkThemingEngine *engine,
 125                             cairo_t          *cr,
 126                             gdouble           x,
 127                             gdouble           y,
 128                             gdouble           width,
 129                             gdouble           height);
 130   void (* render_focus) (GtkThemingEngine *engine,
 131                          cairo_t          *cr,
 132                          gdouble           x,
 133                          gdouble           y,
 134                          gdouble           width,
 135                          gdouble           height);
 136   void (* render_layout) (GtkThemingEngine *engine,
 137                           cairo_t          *cr,
 138                           gdouble           x,
 139                           gdouble           y,
 140                           PangoLayout      *layout);
 141   void (* render_slider) (GtkThemingEngine *engine,
 142                           cairo_t          *cr,
 143                           gdouble           x,
 144                           gdouble           y,
 145                           gdouble           width,
 146                           gdouble           height,
 147                           GtkOrientation    orientation);
 148   void (* render_handle)    (GtkThemingEngine *engine,
 149                              cairo_t          *cr,
 150                              gdouble           x,
 151                              gdouble           y,
 152                              gdouble           width,
 153                              gdouble           height);
 154 };
 155
 156 GType gtk_theming_engine_get_type (void) G_GNUC_CONST;
 157
 158 void _gtk_theming_engine_set_context (GtkThemingEngine *engine,
 159                                       GtkStyleContext  *context);
 160
 161 void gtk_theming_engine_register_property (GtkThemingEngine       *engine,
 162                                            const gchar            *property_name,
 163                                            GType                   type,
 164                                            const GValue           *default_value,
 165                                            GtkStylePropertyParser  parse_func);
 166
 167 void gtk_theming_engine_get_property (GtkThemingEngine *engine,
 168                                       const gchar      *property,
 169                                       GtkStateFlags     state,
 170                                       GValue           *value);
 171 void gtk_theming_engine_get_valist   (GtkThemingEngine *engine,
 172                                       GtkStateFlags     state,
 173                                       va_list           args);
 174 void gtk_theming_engine_get          (GtkThemingEngine *engine,
 175                                       GtkStateFlags     state,
 176                                       ...) G_GNUC_NULL_TERMINATED;
 177
 178 void gtk_theming_engine_get_style_property (GtkThemingEngine *engine,
 179                                             const gchar      *property_name,
 180                                             GValue           *value);
 181 void gtk_theming_engine_get_style_valist   (GtkThemingEngine *engine,
 182                                             va_list           args);
 183 void gtk_theming_engine_get_style          (GtkThemingEngine *engine,
 184                                             ...);
 185
 186
 187 G_CONST_RETURN GtkWidgetPath * gtk_theming_engine_get_path (GtkThemingEngine *engine);
 188
 189 gboolean gtk_theming_engine_has_class  (GtkThemingEngine *engine,
 190                                         const gchar      *style_class);
 191 gboolean gtk_theming_engine_has_region (GtkThemingEngine *engine,
 192                                         const gchar      *style_class,
 193                                         GtkRegionFlags   *flags);
 194
 195 GtkStateFlags gtk_theming_engine_get_state     (GtkThemingEngine *engine);
 196 gboolean      gtk_theming_engine_is_state_set  (GtkThemingEngine *engine,
 197                                                 GtkStateType      state,
 198                                                 gdouble          *progress);
 199
 200 GtkTextDirection gtk_theming_engine_get_direction (GtkThemingEngine *engine);
 201
 202 GtkJunctionSides gtk_theming_engine_get_junction_sides (GtkThemingEngine *engine);
 203
 204 GtkThemingEngine * gtk_theming_engine_load (const gchar *name);
 205
 206 GdkScreen * gtk_theming_engine_get_screen (GtkThemingEngine *engine);
 207
 208
 209 G_END_DECLS
 210
 211 #endif /* __GTK_THEMING_ENGINE_H__ */