Caolán McNamara
e510a208b0
Change-Id: I4de4d5c3a191784598e93a8cf70e45a3f59ae857 Reviewed-on: https://gerrit.libreoffice.org/14907 Reviewed-by: Caolán McNamara <caolanm@redhat.com> Tested-by: Caolán McNamara <caolanm@redhat.com>
312 lines
11 KiB
C++
312 lines
11 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <utility>
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#include <prex.h>
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#include <X11/extensions/Xrender.h>
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#include <X11/Xlib.h>
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#include <postx.h>
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#include "cairo_cairo.hxx"
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#include "cairo_xlib_cairo.hxx"
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#include <vcl/sysdata.hxx>
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#include <vcl/bitmap.hxx>
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#include <vcl/virdev.hxx>
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#include <vcl/window.hxx>
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#include <basegfx/vector/b2isize.hxx>
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namespace
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{
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Pixmap limitXCreatePixmap(Display *display, Drawable d, unsigned int width, unsigned int height, unsigned int depth)
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{
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// The X protocol request CreatePixmap puts an upper bound
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// of 16 bit to the size. And in practice some drivers
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// fall over with values close to the max.
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// see, e.g. moz#424333, fdo#48961, rhbz#1086714
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// we've a duplicate of this in vcl :-(
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if (width > SAL_MAX_INT16-10 || height > SAL_MAX_INT16-10)
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{
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SAL_WARN("canvas", "overlarge pixmap: " << width << " x " << height);
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return None;
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}
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return XCreatePixmap(display, d, width, height, depth);
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}
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}
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namespace cairo
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{
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#include <cairo-xlib.h>
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#include <cairo-xlib-xrender.h>
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X11SysData::X11SysData() :
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pDisplay(NULL),
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hDrawable(0),
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pVisual(NULL),
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nScreen(0),
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nDepth(-1),
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aColormap(-1),
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pRenderFormat(NULL)
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{}
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X11SysData::X11SysData( const SystemGraphicsData& pSysDat ) :
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pDisplay(pSysDat.pDisplay),
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hDrawable(pSysDat.hDrawable),
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pVisual(pSysDat.pVisual),
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nScreen(pSysDat.nScreen),
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nDepth(pSysDat.nDepth),
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aColormap(pSysDat.aColormap),
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pRenderFormat(pSysDat.pXRenderFormat)
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{}
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X11SysData::X11SysData( const SystemEnvData& pSysDat ) :
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pDisplay(pSysDat.pDisplay),
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hDrawable(pSysDat.aWindow),
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pVisual(pSysDat.pVisual),
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nScreen(pSysDat.nScreen),
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nDepth(pSysDat.nDepth),
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aColormap(pSysDat.aColormap),
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pRenderFormat(NULL)
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{}
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X11Pixmap::~X11Pixmap()
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{
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if( mpDisplay && mhDrawable )
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XFreePixmap( (Display*)mpDisplay, mhDrawable );
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}
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/**
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* Surface::Surface: Create Canvas surface with existing data
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* @param pSysData Platform native system environment data (struct SystemEnvData in vcl/inc/sysdata.hxx)
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* @param pSurface Cairo surface
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*
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* pSysData contains the platform native Drawable reference
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* This constructor only stores data, it does no processing.
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* It is used by e.g. Surface::getSimilar()
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*
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* Set the mpSurface as pSurface
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**/
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X11Surface::X11Surface( const X11SysData& rSysData,
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const X11PixmapSharedPtr& rPixmap,
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const CairoSurfaceSharedPtr& pSurface ) :
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maSysData(rSysData),
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mpPixmap(rPixmap),
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mpSurface(pSurface)
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{}
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/**
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* Surface::Surface: Create generic Canvas surface using given Cairo Surface
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*
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* @param pSurface Cairo Surface
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*
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* This constructor only stores data, it does no processing.
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* It is used with e.g. cairo_image_surface_create_for_data()
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* Unlike other constructors, mpSysData is set to NULL
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*
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* Set the mpSurface as pSurface
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**/
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X11Surface::X11Surface( const CairoSurfaceSharedPtr& pSurface ) :
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maSysData(),
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mpPixmap(),
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mpSurface(pSurface)
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{}
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/**
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* Surface::Surface: Create Canvas surface from Window reference.
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* @param pSysData Platform native system environment data (struct SystemEnvData in vcl/inc/sysdata.hxx)
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* @param x horizontal location of the new surface
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* @param y vertical location of the new surface
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* @param width width of the new surface
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* @param height height of the new surface
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*
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* pSysData contains the platform native Window reference.
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*
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* pSysData is used to create a surface on the Window
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*
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* Set the mpSurface to the new surface or NULL
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**/
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X11Surface::X11Surface( const X11SysData& rSysData, int x, int y, int width, int height ) :
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maSysData(rSysData),
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mpPixmap(),
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mpSurface(
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cairo_xlib_surface_create( (Display*)rSysData.pDisplay,
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rSysData.hDrawable,
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(Visual*)rSysData.pVisual,
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width + x, height + y ),
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&cairo_surface_destroy)
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{
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cairo_surface_set_device_offset(mpSurface.get(), x, y );
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}
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/**
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* Surface::Surface: Create platform native Canvas surface from BitmapSystemData
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* @param pSysData Platform native system environment data (struct SystemEnvData in vcl/inc/sysdata.hxx)
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* @param pBmpData Platform native image data (struct BitmapSystemData in vcl/inc/bitmap.hxx)
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* @param width width of the new surface
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* @param height height of the new surface
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*
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* The pBmpData provides the imagedata that the created surface should contain.
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*
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* Set the mpSurface to the new surface or NULL
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**/
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X11Surface::X11Surface( const X11SysData& rSysData,
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const BitmapSystemData& rData ) :
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maSysData( rSysData ),
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mpPixmap(),
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mpSurface(
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cairo_xlib_surface_create( (Display*)rSysData.pDisplay,
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reinterpret_cast<Drawable>(rData.aPixmap),
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(Visual*) rSysData.pVisual,
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rData.mnWidth, rData.mnHeight ),
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&cairo_surface_destroy)
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{
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}
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/**
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* Surface::getCairo: Create Cairo (drawing object) for the Canvas surface
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*
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* @return new Cairo or NULL
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**/
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CairoSharedPtr X11Surface::getCairo() const
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{
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return CairoSharedPtr( cairo_create(mpSurface.get()),
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&cairo_destroy );
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}
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/**
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* Surface::getSimilar: Create new similar Canvas surface
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* @param cairo_content_type format of the new surface (cairo_content_t from cairo/src/cairo.h)
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* @param width width of the new surface
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* @param height height of the new surface
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*
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* Creates a new Canvas surface. This normally creates platform native surface, even though
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* generic function is used.
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*
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* Cairo surface from cairo_content_type (cairo_content_t)
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*
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* @return new surface or NULL
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**/
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SurfaceSharedPtr X11Surface::getSimilar(int cairo_content_type, int width, int height ) const
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{
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Pixmap hPixmap;
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if( maSysData.pDisplay && maSysData.hDrawable )
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{
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XRenderPictFormat* pFormat;
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int nFormat;
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switch (cairo_content_type)
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{
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case CAIRO_CONTENT_ALPHA:
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nFormat = PictStandardA8;
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break;
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case CAIRO_CONTENT_COLOR:
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nFormat = PictStandardRGB24;
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break;
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case CAIRO_CONTENT_COLOR_ALPHA:
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default:
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nFormat = PictStandardARGB32;
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break;
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}
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pFormat = XRenderFindStandardFormat( (Display*)maSysData.pDisplay, nFormat );
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hPixmap = limitXCreatePixmap( (Display*)maSysData.pDisplay, maSysData.hDrawable,
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width > 0 ? width : 1, height > 0 ? height : 1,
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pFormat->depth );
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X11SysData aSysData(maSysData);
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aSysData.pRenderFormat = pFormat;
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return SurfaceSharedPtr(
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new X11Surface( aSysData,
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X11PixmapSharedPtr(
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new X11Pixmap(hPixmap, maSysData.pDisplay)),
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CairoSurfaceSharedPtr(
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cairo_xlib_surface_create_with_xrender_format(
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(Display*)maSysData.pDisplay,
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hPixmap,
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ScreenOfDisplay((Display *)maSysData.pDisplay, maSysData.nScreen),
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pFormat, width, height ),
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&cairo_surface_destroy) ));
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}
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else
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return SurfaceSharedPtr(
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new X11Surface( maSysData,
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X11PixmapSharedPtr(),
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CairoSurfaceSharedPtr(
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cairo_surface_create_similar( mpSurface.get(),
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static_cast<cairo_content_t>(cairo_content_type), width, height ),
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&cairo_surface_destroy )));
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}
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boost::shared_ptr<VirtualDevice> X11Surface::createVirtualDevice() const
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{
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SystemGraphicsData aSystemGraphicsData;
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aSystemGraphicsData.nSize = sizeof(SystemGraphicsData);
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aSystemGraphicsData.hDrawable = getDrawable();
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aSystemGraphicsData.pXRenderFormat = getRenderFormat();
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int width = cairo_xlib_surface_get_width(mpSurface.get());
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int height = cairo_xlib_surface_get_height(mpSurface.get());
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return boost::shared_ptr<VirtualDevice>(
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new VirtualDevice(&aSystemGraphicsData,
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Size(width, height),
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std::max(getDepth(), 0)));
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}
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/**
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* Surface::Resize: Resizes the Canvas surface.
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* @param width new width of the surface
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* @param height new height of the surface
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*
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* Only used on X11.
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*
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* @return The new surface or NULL
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**/
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bool X11Surface::Resize(int width, int height)
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{
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cairo_xlib_surface_set_size(mpSurface.get(), width, height);
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return true;
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}
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void X11Surface::flush() const
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{
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XSync( (Display*)maSysData.pDisplay, false );
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}
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/**
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* Surface::getDepth: Get the color depth of the Canvas surface.
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*
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* @return color depth
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**/
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int X11Surface::getDepth() const
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{
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if( maSysData.pRenderFormat )
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return ((XRenderPictFormat*) maSysData.pRenderFormat)->depth;
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return -1;
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}
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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