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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 .
*/
#ifndef IOS
#include <headless/svpvd.hxx>
#include <headless/svpgdi.hxx>
#include <basegfx/vector/b2ivector.hxx>
#include <comphelper/lok.hxx>
#include <cairo.h>
using namespace basegfx;
SvpSalVirtualDevice::SvpSalVirtualDevice(cairo_surface_t* pRefSurface, cairo_surface_t* pPreExistingTarget)
: m_pRefSurface(pRefSurface)
, m_pSurface(pPreExistingTarget)
, m_bOwnsSurface(!pPreExistingTarget)
{
cairo_surface_reference(m_pRefSurface);
}
SvpSalVirtualDevice::~SvpSalVirtualDevice()
{
if (m_bOwnsSurface)
cairo_surface_destroy(m_pSurface);
cairo_surface_destroy(m_pRefSurface);
}
SvpSalGraphics* SvpSalVirtualDevice::AddGraphics(SvpSalGraphics* pGraphics)
{
pGraphics->setSurface(m_pSurface, m_aFrameSize);
m_aGraphics.push_back(pGraphics);
return pGraphics;
}
SalGraphics* SvpSalVirtualDevice::AcquireGraphics()
{
return AddGraphics(new SvpSalGraphics());
}
void SvpSalVirtualDevice::ReleaseGraphics( SalGraphics* pGraphics )
{
std::erase(m_aGraphics, dynamic_cast<SvpSalGraphics*>(pGraphics));
delete pGraphics;
}
bool SvpSalVirtualDevice::SetSize( tools::Long nNewDX, tools::Long nNewDY )
{
return SetSizeUsingBuffer(nNewDX, nNewDY, nullptr);
}
bool SvpSalVirtualDevice::CreateSurface(tools::Long nNewDX, tools::Long nNewDY, sal_uInt8 *const pBuffer)
{
if (m_pSurface)
{
cairo_surface_destroy(m_pSurface);
}
if (pBuffer)
{
// The buffer should only be set by VirtualDevice::SetOutputSizePixelScaleOffsetAndLOKBuffer()
// when used to draw a tile for LOK. It cannot be used for something else, because otherwise
// this would need a way to detect whether this is a tiled paint that needs LOK handling
// or whether it's that something else that just might happen to be called with LOK active.
assert(comphelper::LibreOfficeKit::isActive());
// Force scaling of the painting
double fScale = comphelper::LibreOfficeKit::getDPIScale();
m_pSurface = cairo_image_surface_create_for_data(pBuffer, CAIRO_FORMAT_ARGB32,
nNewDX, nNewDY, cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, nNewDX));
dl_cairo_surface_set_device_scale(m_pSurface, fScale, fScale);
}
else if(nNewDX <= 32 && nNewDY <= 32)
{
double fXScale, fYScale;
dl_cairo_surface_get_device_scale(m_pRefSurface, &fXScale, &fYScale);
nNewDX *= fXScale;
nNewDY *= fYScale;
// Force image-based surface if small. Small VirtualDevice instances are often used for small
// temporary bitmaps that will eventually have GetBitmap() called on them, which would cause
// X Server roundtrip with Xlib-based surface, which may be way more costly than doing the drawing
// in software (which should be fairly cheap for small surfaces anyway).
m_pSurface = cairo_surface_create_similar_image(m_pRefSurface, CAIRO_FORMAT_ARGB32, nNewDX, nNewDY);
dl_cairo_surface_set_device_scale(m_pSurface, fXScale, fYScale);
}
else
{
m_pSurface = cairo_surface_create_similar(m_pRefSurface, CAIRO_CONTENT_COLOR_ALPHA, nNewDX, nNewDY);
// Device scale is inherited in this case.
}
SAL_WARN_IF(cairo_surface_status(m_pSurface) != CAIRO_STATUS_SUCCESS, "vcl", "surface of size " << nNewDX << " by " << nNewDY << " creation failed with status of: " << cairo_status_to_string(cairo_surface_status(m_pSurface)));
return cairo_surface_status(m_pSurface) == CAIRO_STATUS_SUCCESS;
}
bool SvpSalVirtualDevice::SetSizeUsingBuffer( tools::Long nNewDX, tools::Long nNewDY,
sal_uInt8 *const pBuffer)
{
bool bSuccess = true;
if (nNewDX == 0)
nNewDX = 1;
if (nNewDY == 0)
nNewDY = 1;
if (!m_pSurface || m_aFrameSize.getX() != nNewDX ||
m_aFrameSize.getY() != nNewDY)
{
m_aFrameSize = basegfx::B2IVector(nNewDX, nNewDY);
if (m_bOwnsSurface)
bSuccess = CreateSurface(nNewDX, nNewDY, pBuffer);
assert(m_pSurface);
// update device in existing graphics
for (auto const& graphic : m_aGraphics)
graphic->setSurface(m_pSurface, m_aFrameSize);
}
return bSuccess;
}
tools::Long SvpSalVirtualDevice::GetWidth() const
{
return m_pSurface ? m_aFrameSize.getX() : 0;
}
tools::Long SvpSalVirtualDevice::GetHeight() const
{
return m_pSurface ? m_aFrameSize.getY() : 0;
}
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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