112 lines
4.3 KiB
C
112 lines
4.3 KiB
C
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/* GTK - The GIMP Toolkit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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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 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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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#pragma once
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#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
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#error "Only <gtk/gtk.h> can be included directly."
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#endif
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#include <gtk/gtkwidget.h>
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G_BEGIN_DECLS
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#define GTK_TYPE_DRAWING_AREA (gtk_drawing_area_get_type ())
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#define GTK_DRAWING_AREA(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_DRAWING_AREA, GtkDrawingArea))
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#define GTK_DRAWING_AREA_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_DRAWING_AREA, GtkDrawingAreaClass))
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#define GTK_IS_DRAWING_AREA(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_DRAWING_AREA))
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#define GTK_IS_DRAWING_AREA_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_DRAWING_AREA))
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#define GTK_DRAWING_AREA_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_DRAWING_AREA, GtkDrawingAreaClass))
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typedef struct _GtkDrawingArea GtkDrawingArea;
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typedef struct _GtkDrawingAreaClass GtkDrawingAreaClass;
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/**
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* GtkDrawingAreaDrawFunc:
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* @drawing_area: the `GtkDrawingArea` to redraw
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* @cr: the context to draw to
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* @width: the actual width of the contents. This value will be at least
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* as wide as GtkDrawingArea:width.
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* @height: the actual height of the contents. This value will be at least
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* as wide as GtkDrawingArea:height.
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* @user_data: (closure): user data
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*
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* Whenever @drawing_area needs to redraw, this function will be called.
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*
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* This function should exclusively redraw the contents of the drawing area
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* and must not call any widget functions that cause changes.
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*/
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typedef void (* GtkDrawingAreaDrawFunc) (GtkDrawingArea *drawing_area,
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cairo_t *cr,
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int width,
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int height,
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gpointer user_data);
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struct _GtkDrawingArea
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{
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GtkWidget widget;
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};
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struct _GtkDrawingAreaClass
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{
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GtkWidgetClass parent_class;
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void (* resize) (GtkDrawingArea *area,
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int width,
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int height);
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/*< private >*/
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gpointer padding[8];
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};
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GDK_AVAILABLE_IN_ALL
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GType gtk_drawing_area_get_type (void) G_GNUC_CONST;
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GDK_AVAILABLE_IN_ALL
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GtkWidget* gtk_drawing_area_new (void);
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GDK_AVAILABLE_IN_ALL
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void gtk_drawing_area_set_content_width (GtkDrawingArea *self,
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int width);
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GDK_AVAILABLE_IN_ALL
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int gtk_drawing_area_get_content_width (GtkDrawingArea *self);
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GDK_AVAILABLE_IN_ALL
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void gtk_drawing_area_set_content_height (GtkDrawingArea *self,
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int height);
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GDK_AVAILABLE_IN_ALL
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int gtk_drawing_area_get_content_height (GtkDrawingArea *self);
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GDK_AVAILABLE_IN_ALL
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void gtk_drawing_area_set_draw_func (GtkDrawingArea *self,
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GtkDrawingAreaDrawFunc draw_func,
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gpointer user_data,
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GDestroyNotify destroy);
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G_DEFINE_AUTOPTR_CLEANUP_FUNC(GtkDrawingArea, g_object_unref)
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G_END_DECLS
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