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dbede0b115
This can be used to lock a surface for reading to avoid causing the surface contents to be invalidated. This is needed when reading back from a front-buffer to the back-buffer as is needed when using Cairo surfaces to implement something similar to BufferAge.
61 lines
2.9 KiB
C
61 lines
2.9 KiB
C
/*
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* Copyright © 2021 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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* SPDX-License-Identifier: LGPL-2.1-or-later
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*/
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#ifndef __GDK_MACOS_BUFFER_PRIVATE_H__
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#define __GDK_MACOS_BUFFER_PRIVATE_H__
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#include <CoreGraphics/CoreGraphics.h>
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#include <Foundation/Foundation.h>
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#include <IOSurface/IOSurface.h>
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#include <cairo.h>
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#include <glib-object.h>
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G_BEGIN_DECLS
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#define GDK_TYPE_MACOS_BUFFER (gdk_macos_buffer_get_type())
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G_DECLARE_FINAL_TYPE (GdkMacosBuffer, gdk_macos_buffer, GDK, MACOS_BUFFER, GObject)
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GdkMacosBuffer *_gdk_macos_buffer_new (int width,
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int height,
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double device_scale,
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int bytes_per_element,
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int bits_per_pixel);
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IOSurfaceRef _gdk_macos_buffer_get_native (GdkMacosBuffer *self);
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void _gdk_macos_buffer_lock (GdkMacosBuffer *self);
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void _gdk_macos_buffer_unlock (GdkMacosBuffer *self);
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void _gdk_macos_buffer_read_lock (GdkMacosBuffer *self);
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void _gdk_macos_buffer_read_unlock (GdkMacosBuffer *self);
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guint _gdk_macos_buffer_get_width (GdkMacosBuffer *self);
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guint _gdk_macos_buffer_get_height (GdkMacosBuffer *self);
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guint _gdk_macos_buffer_get_stride (GdkMacosBuffer *self);
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double _gdk_macos_buffer_get_device_scale (GdkMacosBuffer *self);
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const cairo_region_t *_gdk_macos_buffer_get_damage (GdkMacosBuffer *self);
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void _gdk_macos_buffer_set_damage (GdkMacosBuffer *self,
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cairo_region_t *damage);
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gpointer _gdk_macos_buffer_get_data (GdkMacosBuffer *self);
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gboolean _gdk_macos_buffer_get_flipped (GdkMacosBuffer *self);
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void _gdk_macos_buffer_set_flipped (GdkMacosBuffer *self,
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gboolean flipped);
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G_END_DECLS
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#endif /* __GDK_MACOS_BUFFER_PRIVATE_H__ */
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