mirror of
https://github.com/aseprite/aseprite.git
synced 2024-12-29 00:23:48 +00:00
100 lines
3.2 KiB
C++
100 lines
3.2 KiB
C++
/* Aseprite
|
|
* Copyright (C) 2001-2012 David Capello
|
|
*
|
|
* This program 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 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program 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 this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#ifndef APP_CONTEXT_ACCESS_H_INCLUDED
|
|
#define APP_CONTEXT_ACCESS_H_INCLUDED
|
|
|
|
#include "app/document_access.h"
|
|
#include "app/document_location.h"
|
|
|
|
namespace app {
|
|
|
|
class Context;
|
|
|
|
template<typename DocumentAccessT>
|
|
class ContextAccess {
|
|
public:
|
|
const Context* context() const { return m_context; }
|
|
const DocumentLocation* location() const { return &m_location; }
|
|
const DocumentAccessT& document() const { return m_document; }
|
|
const Sprite* sprite() const { return m_location.sprite(); }
|
|
const Layer* layer() const { return m_location.layer(); }
|
|
FrameNumber frame() const { return m_location.frame(); }
|
|
const Cel* cel() const { return m_location.cel(); }
|
|
|
|
// You cannot change the location directly from a writable ContextAccess anyway.
|
|
const DocumentLocation* location() { return &m_location; }
|
|
|
|
Context* context() { return const_cast<Context*>(m_context); }
|
|
DocumentAccessT& document() { return m_document; }
|
|
Sprite* sprite() { return m_location.sprite(); }
|
|
Layer* layer() { return m_location.layer(); }
|
|
Cel* cel() { return m_location.cel(); }
|
|
|
|
Image* image(int* x = NULL, int* y = NULL, int* opacity = NULL) const {
|
|
return m_location.image(x, y, opacity);
|
|
}
|
|
|
|
protected:
|
|
ContextAccess(const Context* context)
|
|
: m_context(context)
|
|
, m_document(context->getActiveDocument())
|
|
, m_location(context->getActiveLocation())
|
|
{
|
|
}
|
|
|
|
template<typename DocumentReaderT>
|
|
ContextAccess(const Context* context, const DocumentReaderT& documentReader)
|
|
: m_context(context)
|
|
, m_document(documentReader)
|
|
, m_location(context->getActiveLocation())
|
|
{
|
|
}
|
|
|
|
private:
|
|
const Context* m_context;
|
|
DocumentAccessT m_document;
|
|
DocumentLocation m_location;
|
|
};
|
|
|
|
// You can use this class to access to the given context to read the
|
|
// active document.
|
|
class ContextReader : public ContextAccess<DocumentReader> {
|
|
public:
|
|
ContextReader(const Context* context)
|
|
: ContextAccess<DocumentReader>(context) {
|
|
}
|
|
};
|
|
|
|
// You can use this class to access to the given context to write the
|
|
// active document.
|
|
class ContextWriter : public ContextAccess<DocumentWriter> {
|
|
public:
|
|
ContextWriter(const Context* context)
|
|
: ContextAccess<DocumentWriter>(context) {
|
|
}
|
|
|
|
ContextWriter(const ContextReader& reader)
|
|
: ContextAccess<DocumentWriter>(reader.context(), reader.document()) {
|
|
}
|
|
};
|
|
|
|
} // namespace app
|
|
|
|
#endif
|