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/* This file is part of Owl.
*
* Copyright © 2019-2021 Sergey Bugaev <bugaevc@gmail.com>
*
* Owl is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published
* by the Free Software Foundation, either version 3 of the License,
* or (at your option) any later version.
*
* Owl 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 General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License
* along with Owl. If not, see <http://www.gnu.org/licenses/>.
*/
#import "OwlBuffer.h"
#import "OwlShmBuffer.h"
@implementation OwlBuffer
static NSMutableArray *buffers;
+ (void) initialize {
if (buffers == nil) {
buffers = [NSMutableArray new];
}
}
static void buffer_destroy(struct wl_resource *resource) {
OwlBuffer *self = wl_resource_get_user_data(resource);
[self release];
}
static void buffer_destroy_handler(
struct wl_client *client,
struct wl_resource *resource
) {
wl_resource_destroy(resource);
}
static const struct wl_buffer_interface buffer_impl = {
.destroy = buffer_destroy_handler
};
- (id) initWithExternallyImplementedResource: (struct wl_resource *) resource {
_resource = resource;
[buffers addObject: self];
return self;
}
- (id) initWithResource: (struct wl_resource *) resource {
self = [self initWithExternallyImplementedResource: resource];
wl_resource_set_implementation(
resource,
&buffer_impl,
[self retain],
buffer_destroy
);
return self;
}
- (void) dealloc {
[buffers removeObject: self];
[super dealloc];
}
+ (OwlBuffer *) bufferForResource: (struct wl_resource *) resource {
if (resource == NULL) {
return nil;
}
// All buffer factories register their resources with us immediately on creation,
// except wl_shm, which is implemented outside of Owl (in wayland-server).
for (OwlBuffer *buffer in buffers) {
if (buffer->_resource == resource) {
return buffer;
}
}
return [[[OwlShmBuffer alloc] initWithResource: resource] autorelease];
}
- (void) invalidate {
// Do nothing, subclasses may override this to recompute their data.
}
- (NSSize) size {
// Subclasses need to override this.
return NSZeroSize;
}
- (BOOL) needsGLForRendering {
// Subclasses may override this if they need OpenGL.
return NO;
}
- (void) drawInRect: (NSRect) rect {
// Do nothing, subclasses override this.
}
- (void) sendRelease {
wl_buffer_send_release(_resource);
}
- (void) notifyDetached {
// This method is invoked when the buffer is detached from a surface,
// The base implementation does nothing, subclasses may want to override
// it and call [self sendRelease] if they don't already call that at a
// different time.
}
@end
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