canvas/source/cairo/cairo_devicehelper.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
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   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #pragma once
  21
  22 #include <com/sun/star/rendering/XGraphicDevice.hpp>
  23
  24 #include <vcl/outdev.hxx>
  25
  26 #include "cairo_surfaceprovider.hxx"
  27
  28 /* Definition of DeviceHelper class */
  29
  30 namespace cairocanvas
  31 {
  32     class DeviceHelper
  33     {
  34     public:
  35         /// make noncopyable
  36         DeviceHelper(const DeviceHelper&) = delete;
  37         const DeviceHelper& operator=(const DeviceHelper&) = delete;
  38
  39         DeviceHelper();
  40
  41         /** init helper
  42
  43             @param rCanvas
  44             Owning canvas.
  45
  46             @param rRefDevice
  47             Reference output device. Needed for resolution
  48             calculations etc.
  49          */
  50         void init( SurfaceProvider& rSurfaceProvider,
  51                    OutputDevice&    rRefDevice );
  52
  53         /// Dispose all internal references
  54         void disposing();
  55
  56         // XWindowGraphicDevice
  57         css::geometry::RealSize2D getPhysicalResolution();
  58         css::geometry::RealSize2D getPhysicalSize();
  59         css::uno::Reference< css::rendering::XLinePolyPolygon2D > createCompatibleLinePolyPolygon(
  60             const css::uno::Reference< css::rendering::XGraphicDevice >&                               rDevice,
  61             const css::uno::Sequence< css::uno::Sequence< css::geometry::RealPoint2D > >& points );
  62         css::uno::Reference< css::rendering::XBezierPolyPolygon2D > createCompatibleBezierPolyPolygon(
  63             const css::uno::Reference< css::rendering::XGraphicDevice >&                                       rDevice,
  64             const css::uno::Sequence< css::uno::Sequence< css::geometry::RealBezierSegment2D > >& points );
  65         css::uno::Reference< css::rendering::XBitmap > createCompatibleBitmap(
  66             const css::uno::Reference< css::rendering::XGraphicDevice >&  rDevice,
  67             const css::geometry::IntegerSize2D&                                        size );
  68         css::uno::Reference< css::rendering::XVolatileBitmap > createVolatileBitmap(
  69             const css::uno::Reference< css::rendering::XGraphicDevice >&  rDevice,
  70             const css::geometry::IntegerSize2D&                                        size );
  71         css::uno::Reference< css::rendering::XBitmap > createCompatibleAlphaBitmap(
  72             const css::uno::Reference< css::rendering::XGraphicDevice >&  rDevice,
  73             const css::geometry::IntegerSize2D&                                        size );
  74         css::uno::Reference< css::rendering::XVolatileBitmap > createVolatileAlphaBitmap(
  75             const css::uno::Reference< css::rendering::XGraphicDevice >&  rDevice,
  76             const css::geometry::IntegerSize2D&                                        size );
  77
  78         css::uno::Any isAccelerated() const;
  79         css::uno::Any getDeviceHandle() const;
  80         css::uno::Any getSurfaceHandle() const;
  81         css::uno::Reference<
  82             css::rendering::XColorSpace > const & getColorSpace() const;
  83
  84         /** called when DumpScreenContent property is enabled on
  85             XGraphicDevice, and writes out bitmaps of current screen.
  86          */
  87         void dumpScreenContent() const;
  88
  89         OutputDevice* getOutputDevice() const { return mpRefDevice; }
  90         const ::cairo::SurfaceSharedPtr& getSurface() const { return mpSurface; }
  91         ::cairo::SurfaceSharedPtr createSurface( const ::basegfx::B2ISize& rSize, int aContent );
  92         ::cairo::SurfaceSharedPtr createSurface( BitmapSystemData const & rData, const Size& rSize );
  93
  94     protected:
  95         /** init helper
  96
  97             @param rCanvas
  98             Owning canvas.
  99
 100             @param rRefDevice
 101             Reference output device. Needed for resolution
 102             calculations etc.
 103          */
 104         void implInit( SurfaceProvider& rSurfaceProvider,
 105                        OutputDevice&    rRefDevice );
 106         void setSize( const ::basegfx::B2ISize& rSize );
 107
 108     private:
 109         /** Surface provider
 110
 111             Deliberately not a refcounted reference, because of
 112             potential circular references for canvas. Provides us with
 113             our output surface and associated functionality.
 114          */
 115         SurfaceProvider*          mpSurfaceProvider;
 116
 117         VclPtr<OutputDevice>      mpRefDevice;
 118         ::cairo::SurfaceSharedPtr mpSurface;
 119     };
 120 }
 121
 122 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */