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Diffstat (limited to 'vcl/headless/svpvd.cxx')
| -rw-r--r-- | vcl/headless/svpvd.cxx | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/vcl/headless/svpvd.cxx b/vcl/headless/svpvd.cxx new file mode 100644 index 0000000000..c65951e029 --- /dev/null +++ b/vcl/headless/svpvd.cxx @@ -0,0 +1,157 @@ +/* -*- 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/svpbmp.hxx> +#include <headless/svpinst.hxx> +#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: */ |