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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#pragma once
#include <vcl/GeometryProvider.hxx>
#include <sal/log.hxx>
class SalGraphics;
/// A non-visible drawable/buffer (e.g. an X11 Pixmap).
class VCL_PLUGIN_PUBLIC SalVirtualDevice
: public vcl::SalGeometryProvider
{
public:
SalVirtualDevice() {}
virtual ~SalVirtualDevice() override;
// SalGraphics or NULL, but two Graphics for all SalVirtualDevices
// must be returned
virtual SalGraphics* AcquireGraphics() = 0;
virtual void ReleaseGraphics( SalGraphics* pGraphics ) = 0;
// Set new size, without saving the old contents
bool SetSize(sal_Int32 nNewDX, sal_Int32 nNewDY, sal_Int32 nScale = 100)
{ return SetSizeUsingBuffer(nNewDX, nNewDY, nullptr, nScale); }
static inline void FixSetSizeParams(sal_Int32& nDX, sal_Int32& nDY, sal_Int32& nScale);
// Set new size using a buffer at the given address
virtual bool SetSizeUsingBuffer(sal_Int32 nNewDX, sal_Int32 nNewDY, sal_uInt8*, sal_Int32 nScale = 100) = 0;
virtual void SetScalePercentage(sal_Int32 nScale) = 0;
};
void SalVirtualDevice::FixSetSizeParams(sal_Int32& nDX, sal_Int32& nDY, sal_Int32& nScale)
{
SAL_WARN_IF(!(nDX > 0 && nDY > 0 && nScale > 0), "vcl",
"Invalid virtual device request (" << nDX << " " << nDY << " " << nScale << ")!");
if (nDX == 0)
nDX = 1;
if (nDY == 0)
nDY = 1;
if (nScale <= 0)
nScale = 100;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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