canvas/workben/canvasdemo.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   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
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   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 // This code strongly inspired by Miguel / Federico's Gnome Canvas demo code.
  21
  22 #include <sal/config.h>
  23
  24 #include <basegfx/polygon/b2dpolygon.hxx>
  25 #include <basegfx/polygon/b2dpolygontools.hxx>
  26 #include <basegfx/utils/canvastools.hxx>
  27 #include <com/sun/star/lang/XMultiServiceFactory.hpp>
  28 #include <com/sun/star/rendering/CompositeOperation.hpp>
  29 #include <com/sun/star/rendering/FillRule.hpp>
  30 #include <com/sun/star/rendering/PathCapType.hpp>
  31 #include <com/sun/star/rendering/PathJoinType.hpp>
  32 #include <com/sun/star/rendering/RenderState.hpp>
  33 #include <com/sun/star/rendering/ViewState.hpp>
  34 #include <com/sun/star/rendering/XBitmap.hpp>
  35 #include <com/sun/star/rendering/XCanvas.hpp>
  36 #include <com/sun/star/rendering/XGraphicDevice.hpp>
  37 #include <com/sun/star/rendering/XSpriteCanvas.hpp>
  38 #include <com/sun/star/ucb/UniversalContentBroker.hpp>
  39 #include <comphelper/processfactory.hxx>
  40 #include <comphelper/random.hxx>
  41 #include <cppuhelper/bootstrap.hxx>
  42 #include <vcl/canvastools.hxx>
  43 #include <vcl/svapp.hxx>
  44 #include <vcl/vclmain.hxx>
  45 #include <vcl/virdev.hxx>
  46 #include <vcl/window.hxx>
  47 #include <vcl/wrkwin.hxx>
  48
  49 using namespace ::com::sun::star;
  50
  51 static void PrintHelp()
  52 {
  53     fprintf( stdout, "canvasdemo - Exercise the new canvas impl\n" );
  54 }
  55
  56 class TestWindow : public WorkWindow
  57 {
  58     public:
  59         TestWindow() : WorkWindow(nullptr, WB_APP | WB_STDWORK)
  60         {
  61             SetText("Canvas test");
  62             SetSizePixel( Size( 600, 450 ) );
  63             EnablePaint( true );
  64             Show();
  65         }
  66         virtual ~TestWindow() override {}
  67         virtual void MouseButtonUp( const MouseEvent& /*rMEvt*/ ) override
  68         {
  69             //TODO: do something cool
  70             Application::Quit();
  71         }
  72         virtual void Paint(vcl::RenderContext& rRenderContext, const tools::Rectangle& rRect) override;
  73 };
  74
  75 class DemoRenderer
  76 {
  77     public:
  78         Size maSize;
  79         Size maBox;
  80         rendering::ViewState   maViewState;
  81         rendering::RenderState maRenderState;
  82         uno::Sequence< double > maColorBlack;
  83         uno::Sequence< double > maColorWhite;
  84         uno::Sequence< double > maColorRed;
  85         uno::Reference< rendering::XCanvas > mxCanvas;
  86         uno::Reference< rendering::XCanvasFont > mxDefaultFont;
  87         uno::Reference< rendering::XGraphicDevice > mxDevice;
  88
  89         DemoRenderer( uno::Reference< rendering::XGraphicDevice > xDevice,
  90                       uno::Reference< rendering::XCanvas > xCanvas,
  91                       Size aSize ) :
  92             maSize(aSize),
  93             maBox(),
  94             maViewState(),
  95             maRenderState(),
  96             maColorBlack( vcl::unotools::colorToStdColorSpaceSequence( COL_BLACK) ),
  97             maColorWhite( vcl::unotools::colorToStdColorSpaceSequence( COL_WHITE) ),
  98             maColorRed( vcl::unotools::colorToStdColorSpaceSequence( COL_RED) ),
  99             mxCanvas(xCanvas),
 100             mxDefaultFont(),
 101             mxDevice( xDevice )
 102         {
 103             // Geometry init
 104             geometry::AffineMatrix2D aUnit( 1,0, 0,
 105                                             0,1, 0 );
 106             maViewState.AffineTransform = aUnit;
 107             maRenderState.AffineTransform = aUnit;
 108             maRenderState.DeviceColor = maColorBlack;
 109
 110             //I can't figure out what the compositeoperation stuff does
 111             //it doesn't seem to do anything in either VCL or cairocanvas
 112             //I was hoping that CLEAR would clear the canvas before we paint,
 113             //but nothing changes
 114             maRenderState.CompositeOperation = rendering::CompositeOperation::OVER;
 115
 116             maBox.setWidth(aSize.Width() / 3);
 117             maBox.setHeight(aSize.Height() / 3);
 118
 119             lang::Locale aLocale;
 120             rendering::FontInfo aFontInfo;
 121             aFontInfo.FamilyName = "Swiss";
 122             aFontInfo.StyleName = "SansSerif";
 123             geometry::Matrix2D aFontMatrix( 1, 0,
 124                                             0, 1 );
 125             rendering::FontRequest aFontRequest( aFontInfo, 12.0, 0.0, aLocale );
 126             uno::Sequence< beans::PropertyValue > aExtraFontProperties;
 127             mxDefaultFont = xCanvas->createFont( aFontRequest, aExtraFontProperties, aFontMatrix );
 128             if( !mxDefaultFont.is() )
 129                 fprintf( stderr, "Failed to create font\n" );
 130         }
 131
 132         void drawGrid()
 133         {
 134             long d, dIncr = maSize.Width() / 3;
 135             for ( d = 0; d <= maSize.Width(); d += dIncr )
 136                 mxCanvas->drawLine( geometry::RealPoint2D( d, 0 ),
 137                                     geometry::RealPoint2D( d, maSize.Height() ),
 138                                     maViewState, maRenderState );
 139             dIncr = maSize.Height() / 3;
 140             for ( d = 0; d <= maSize.Height(); d += dIncr )
 141                 mxCanvas->drawLine( geometry::RealPoint2D( 0, d ),
 142                                     geometry::RealPoint2D( maSize.Width(), d ),
 143                                     maViewState, maRenderState );
 144         }
 145
 146         void drawStringAt( OString aString, double x, double y )
 147         {
 148             rendering::StringContext aText;
 149             aText.Text = OStringToOUString( aString, RTL_TEXTENCODING_UTF8 );
 150             aText.StartPosition = 0;
 151             aText.Length = aString.getLength();
 152             rendering::RenderState aRenderState( maRenderState );
 153             aRenderState.AffineTransform.m02 += x;
 154             aRenderState.AffineTransform.m12 += y;
 155
 156             mxCanvas->drawText( aText, mxDefaultFont, maViewState, aRenderState, 0);
 157         }
 158
 159         void drawRect( tools::Rectangle rRect, const uno::Sequence< double > &aColor, int /*nWidth*/ )
 160         {
 161             uno::Sequence< geometry::RealPoint2D > aPoints(4);
 162             uno::Reference< rendering::XLinePolyPolygon2D > xPoly;
 163
 164             aPoints[0] = geometry::RealPoint2D( rRect.Left(),  rRect.Top() );
 165             aPoints[1] = geometry::RealPoint2D( rRect.Left(),  rRect.Bottom() );
 166             aPoints[2] = geometry::RealPoint2D( rRect.Right(), rRect.Bottom() );
 167             aPoints[3] = geometry::RealPoint2D( rRect.Right(), rRect.Top() );
 168
 169             uno::Sequence< uno::Sequence< geometry::RealPoint2D > > aPolys(1);
 170             aPolys[0] = aPoints;
 171             xPoly = mxDevice->createCompatibleLinePolyPolygon( aPolys );
 172             xPoly->setClosed( 0, true );
 173
 174             rendering::RenderState aRenderState( maRenderState );
 175             aRenderState.DeviceColor = aColor;
 176             mxCanvas->drawPolyPolygon( xPoly, maViewState, aRenderState );
 177         }
 178
 179         void translate( double x, double y)
 180         {
 181             maRenderState.AffineTransform.m02 += x;
 182             maRenderState.AffineTransform.m12 += y;
 183         }
 184
 185         void drawPolishDiamond( double center_x, double center_y)
 186         {
 187             const int    VERTICES = 10;
 188             const double RADIUS = 60.0;
 189             int i, j;
 190
 191             rendering::RenderState maOldRenderState = maRenderState; // push
 192             translate( center_x, center_y );
 193
 194             for (i = 0; i < VERTICES; i++)
 195             {
 196                 double a = 2.0 * M_PI * i / VERTICES;
 197                 geometry::RealPoint2D aSrc( RADIUS * cos (a), RADIUS * sin (a) );
 198
 199                 for (j = i + 1; j < VERTICES; j++)
 200                 {
 201                     a = 2.0 * M_PI * j / VERTICES;
 202
 203 //                  FIXME: set cap_style to 'ROUND'
 204                     mxCanvas->drawLine( aSrc,
 205                                         geometry::RealPoint2D( RADIUS * cos (a),
 206                                                                RADIUS * sin (a) ),
 207                                         maViewState, maRenderState );
 208                 }
 209             }
 210
 211             maRenderState = maOldRenderState; // pop
 212         }
 213
 214         void drawHilbert( double anchor_x, double anchor_y )
 215         {
 216             const double SCALE=7.0;
 217             const char hilbert[] = "urdrrulurulldluuruluurdrurddldrrruluurdrurddldrddlulldrdldrrurd";
 218             int nLength = SAL_N_ELEMENTS( hilbert );
 219
 220             uno::Sequence< geometry::RealPoint2D > aPoints( nLength );
 221             uno::Reference< rendering::XLinePolyPolygon2D > xPoly;
 222
 223             aPoints[0] = geometry::RealPoint2D( anchor_x, anchor_y );
 224             for (int i = 0; i < nLength; i++ )
 225             {
 226                 switch( hilbert[i] )
 227                 {
 228                     case 'u':
 229                         aPoints[i+1] = geometry::RealPoint2D( aPoints[i].X,
 230                                                             aPoints[i].Y - SCALE );
 231                         break;
 232                     case 'd':
 233                         aPoints[i+1] = geometry::RealPoint2D( aPoints[i].X,
 234                                                             aPoints[i].Y + SCALE );
 235                         break;
 236                     case 'l':
 237                         aPoints[i+1] = geometry::RealPoint2D( aPoints[i].X - SCALE,
 238                                                             aPoints[i].Y );
 239                         break;
 240                     case 'r':
 241                         aPoints[i+1] = geometry::RealPoint2D( aPoints[i].X + SCALE,
 242                                                             aPoints[i].Y );
 243                         break;
 244                 }
 245             }
 246
 247             uno::Sequence< uno::Sequence< geometry::RealPoint2D > > aPolys(1);
 248             aPolys[0] = aPoints;
 249
 250             xPoly = mxDevice->createCompatibleLinePolyPolygon( aPolys );
 251             xPoly->setClosed( 0, false );
 252
 253             rendering::RenderState aRenderState( maRenderState );
 254             aRenderState.DeviceColor = maColorRed;
 255 //          aRenderState.DeviceColor[3] = 0.5;
 256             rendering::StrokeAttributes aStrokeAttrs;
 257             aStrokeAttrs.StrokeWidth = 4.0;
 258             aStrokeAttrs.MiterLimit = 2.0; // ?
 259             aStrokeAttrs.StartCapType = rendering::PathCapType::BUTT;
 260             aStrokeAttrs.EndCapType = rendering::PathCapType::BUTT;
 261             aStrokeAttrs.JoinType = rendering::PathJoinType::MITER;
 262             //fprintf( stderr, "FIXME: stroking a tools::PolyPolygon doesn't show up\n" );
 263             //yes it does
 264             mxCanvas->strokePolyPolygon( xPoly, maViewState, aRenderState, aStrokeAttrs );
 265             // FIXME: do this instead:
 266             //mxCanvas->drawPolyPolygon( xPoly, maViewState, aRenderState );
 267         }
 268
 269         void drawTitle( OString aTitle )
 270         {
 271             // FIXME: text anchoring to be done
 272             double nStringWidth = aTitle.getLength() * 8.0;
 273             drawStringAt ( aTitle, (maBox.Width() - nStringWidth) / 2, 15 );
 274         }
 275
 276         void drawRectangles()
 277         {
 278             rendering::RenderState maOldRenderState = maRenderState; // push
 279
 280             drawTitle( OString( "Rectangles" ) );
 281
 282             drawRect( tools::Rectangle( 20, 30, 70, 60 ), maColorRed, 8 );
 283             // color mediumseagreen, stipple fill, outline black
 284             drawRect( tools::Rectangle( 90, 40, 180, 100 ), maColorBlack, 4 );
 285             // color steelblue, filled, no outline
 286             drawRect( tools::Rectangle( 10, 80, 80, 140 ), maColorBlack, 1 );
 287
 288             maRenderState = maOldRenderState; // pop
 289         }
 290
 291         void drawEllipses()
 292         {
 293             rendering::RenderState maOldRenderState = maRenderState; // push
 294             translate( maBox.Width(), 0.0 );
 295
 296             drawTitle( OString( "Ellipses" ) );
 297
 298             const basegfx::B2DPoint aCenter( maBox.Width()*.5,
 299                                              maBox.Height()*.5 );
 300             const basegfx::B2DPoint aRadii( maBox.Width()*.3,
 301                                             maBox.Height()*.3 );
 302             const basegfx::B2DPolygon& rEllipse(
 303                 basegfx::utils::createPolygonFromEllipse( aCenter,
 304                                                           aRadii.getX(),
 305                                                           aRadii.getY() ));
 306
 307             uno::Reference< rendering::XPolyPolygon2D > xPoly(
 308                 basegfx::unotools::xPolyPolygonFromB2DPolygon(mxDevice,
 309                                                               rEllipse) );
 310
 311             rendering::StrokeAttributes aStrokeAttrs;
 312             aStrokeAttrs.StrokeWidth = 4.0;
 313             aStrokeAttrs.MiterLimit = 2.0; // ?
 314             aStrokeAttrs.StartCapType = rendering::PathCapType::BUTT;
 315             aStrokeAttrs.EndCapType = rendering::PathCapType::BUTT;
 316             aStrokeAttrs.JoinType = rendering::PathJoinType::MITER;
 317             mxCanvas->strokePolyPolygon( xPoly, maViewState, maRenderState, aStrokeAttrs );
 318
 319             maRenderState = maOldRenderState; // pop
 320         }
 321
 322         void drawText()
 323         {
 324             rendering::RenderState maOldRenderState = maRenderState; // push
 325             translate( maBox.Width() * 2.0, 0.0 );
 326
 327             drawTitle( OString( "Text" ) );
 328
 329             translate( 0.0,
 330                        maBox.Height() * .5 );
 331             drawTitle( OString( "This is lame" ) );
 332
 333             maRenderState = maOldRenderState; // pop
 334         }
 335
 336         void drawImages()
 337         {
 338             rendering::RenderState maOldRenderState = maRenderState; // push
 339             translate( 0.0, maBox.Height() );
 340
 341             drawTitle( OString( "Images" ) );
 342
 343             uno::Reference< rendering::XBitmap > xBitmap(mxCanvas, uno::UNO_QUERY);
 344
 345             if( !xBitmap.is() )
 346                 return;
 347
 348             translate( maBox.Width()*0.1, maBox.Height()*0.2 );
 349             maRenderState.AffineTransform.m00 *= 4.0/15;
 350             maRenderState.AffineTransform.m11 *= 3.0/15;
 351
 352             mxCanvas->drawBitmap(xBitmap, maViewState, maRenderState);
 353
 354             // uno::Reference< rendering::XBitmap > xBitmap2( xBitmap->getScaledBitmap(geometry::RealSize2D(48, 48), false) );
 355             // mxCanvas->drawBitmap(xBitmap2, maViewState, maRenderState); //yes, but where?
 356             //cairo-canvas says:
 357             //called CanvasHelper::getScaledBitmap, we return NULL, TODO
 358             //Exception 'BitmapEx vclcanvas::tools::bitmapExFromXBitmap(const css::uno::Reference<css::rendering::XBitmap>&),
 359             //bitmapExFromXBitmap(): could not extract BitmapEx' thrown
 360
 361             //vcl-canvas says:
 362             //Exception 'BitmapEx vclcanvas::tools::bitmapExFromXBitmap(const css::uno::Reference<css::rendering::XBitmap>&),
 363             //bitmapExFromXBitmap(): could not extract bitmap' thrown
 364             //  Thorsten says that this is a bug, and Thorsten never lies.
 365
 366             maRenderState = maOldRenderState; // pop
 367         }
 368
 369         void drawLines()
 370         {
 371             rendering::RenderState maOldRenderState = maRenderState; // push
 372             translate( maBox.Width(), maBox.Height() );
 373
 374             drawTitle( OString( "Lines" ) );
 375
 376             drawPolishDiamond( 70.0, 80.0 );
 377             drawHilbert( 140.0, 140.0 );
 378
 379             maRenderState = maOldRenderState; // pop
 380         }
 381
 382         void drawCurves()
 383         {
 384             rendering::RenderState maOldRenderState = maRenderState; // push
 385             translate( maBox.Width() * 2.0, maBox.Height() );
 386
 387             drawTitle( OString( "Curves" ) );
 388
 389             translate( maBox.Width() * .5, maBox.Height() * .5 );
 390
 391             const double r= 30.0;
 392             const int num_curves = 3;
 393
 394             //hacky hack hack
 395             uno::Sequence< geometry::RealBezierSegment2D > aBeziers (num_curves);
 396             uno::Reference< rendering::XBezierPolyPolygon2D > xPoly;
 397
 398             for (int i= 0; i < num_curves; i++)
 399                 aBeziers[i]= geometry::RealBezierSegment2D( r * cos(i*2*M_PI/num_curves), //Px
 400                                                             r * sin(i*2*M_PI/num_curves), //py
 401                                                             r * 2 * cos((i*2*M_PI + 2*M_PI)/num_curves),  //C1x
 402                                                             r * 2 * sin((i*2*M_PI + 2*M_PI)/num_curves),  //C1y
 403                                                             r * 2 * cos((i*2*M_PI + 2*M_PI)/num_curves),  //C2x
 404                                                             r * 2 * sin((i*2*M_PI + 2*M_PI)/num_curves)); //C2y
 405             uno::Sequence< uno::Sequence< geometry::RealBezierSegment2D > > aPolys(1);
 406             aPolys[0] = aBeziers;
 407             xPoly = mxDevice->createCompatibleBezierPolyPolygon(aPolys);
 408             xPoly->setClosed( 0, true );
 409             //uno::Reference< rendering::XBezierPolyPolygon2D> xPP( xPoly, uno::UNO_QUERY );
 410             //compiles, but totally screws up.  I think it is interpreting the bezier as a line
 411
 412             rendering::StrokeAttributes aStrokeAttrs;
 413             aStrokeAttrs.StrokeWidth = 4.0;
 414             aStrokeAttrs.MiterLimit = 2.0; // ?
 415             aStrokeAttrs.StartCapType = rendering::PathCapType::BUTT;
 416             aStrokeAttrs.EndCapType = rendering::PathCapType::BUTT;
 417             aStrokeAttrs.JoinType = rendering::PathJoinType::MITER;
 418             mxCanvas->strokePolyPolygon( xPoly, maViewState, maRenderState, aStrokeAttrs );
 419             //you can't draw a BezierPolyPolygon2D with this, even though it is derived from it
 420             //mxCanvas->drawPolyPolygon( xPoly, maViewState, maRenderState );
 421
 422             maRenderState = maOldRenderState; // pop
 423         }
 424
 425         double gimmerand()
 426         {
 427             return comphelper::rng::uniform_real_distribution(0, 100);
 428         }
 429
 430         void drawArcs()
 431         {
 432             rendering::RenderState maOldRenderState = maRenderState; // push
 433             translate( 0.0, maBox.Height() * 2.0 );
 434
 435             drawTitle( OString( "Arcs" ) );
 436
 437
 438             //begin hacks
 439             //This stuff doesn't belong here, but probably in curves
 440             //This stuff doesn't work in VCL b/c vcl doesn't do beziers
 441             //Hah!  Every time the window redraws, we do this
 442             double bx;
 443             double by;
 444             bx= gimmerand();
 445             by= gimmerand();
 446
 447             for (int i= 0; i < 1; i++)
 448             {
 449                 double ax;
 450                 double ay;
 451                 //point a= point b;
 452                 ax= bx;
 453                 ay= by;
 454                 //point b= rand;
 455                 bx= gimmerand();
 456                 by= gimmerand();
 457                 double c1x= gimmerand();
 458                 double c1y= gimmerand();
 459                 double c2x= gimmerand();
 460                 double c2y= gimmerand();
 461                 maRenderState.DeviceColor = maColorRed;
 462                 mxCanvas->drawLine(geometry::RealPoint2D(ax, ay), geometry::RealPoint2D(c1x, c1y), maViewState, maRenderState);
 463                 mxCanvas->drawLine(geometry::RealPoint2D(c1x, c1y), geometry::RealPoint2D(c2x, c2y), maViewState, maRenderState);
 464                 mxCanvas->drawLine(geometry::RealPoint2D(bx, by), geometry::RealPoint2D(c2x, c2y), maViewState, maRenderState);
 465                  //draw from a to b
 466                 geometry::RealBezierSegment2D aBezierSegment(
 467                     ax, //Px
 468                     ay, //Py
 469                     c1x,
 470                     c1x,
 471                     c2x,
 472                     c2y
 473                     );
 474                 geometry::RealPoint2D aEndPoint(bx, by);
 475                 maRenderState.DeviceColor = maColorBlack;
 476                 mxCanvas->drawBezier(
 477                     aBezierSegment,
 478                     aEndPoint,
 479                     maViewState, maRenderState );
 480             }
 481             maRenderState = maOldRenderState; // pop
 482         }
 483
 484
 485     void drawRegularPolygon(double centerx, double centery, int sides, double r)
 486         {
 487             //hacky hack hack
 488             uno::Sequence< geometry::RealPoint2D > aPoints (sides);
 489             uno::Reference< rendering::XLinePolyPolygon2D > xPoly;
 490
 491             for (int i= 0; i < sides; i++)
 492             {
 493                 aPoints[i]= geometry::RealPoint2D( centerx + r * cos(i*2 * M_PI/sides),
 494                                                    centery + r * sin(i*2 * M_PI/sides));
 495             }
 496             uno::Sequence< uno::Sequence< geometry::RealPoint2D > > aPolys(1);
 497             aPolys[0] = aPoints;
 498             xPoly = mxDevice->createCompatibleLinePolyPolygon( aPolys );
 499             xPoly->setClosed( 0, true );
 500             rendering::RenderState aRenderState( maRenderState );
 501             aRenderState.DeviceColor = maColorRed;
 502             mxCanvas->drawPolyPolygon( xPoly, maViewState, aRenderState);
 503             mxCanvas->fillPolyPolygon( xPoly,
 504                                        maViewState,
 505                                        aRenderState );
 506         }
 507
 508         void drawPolygons()
 509         {
 510             rendering::RenderState maOldRenderState = maRenderState; // push
 511             translate( maBox.Width() * 1.0, maBox.Height() * 2.0 );
 512
 513             drawTitle( OString( "Polgyons" ) );
 514
 515             int sides= 3;
 516             for (int i= 1; i <= 4; i++)
 517             {
 518                 drawRegularPolygon(35*i, 35, sides, 15);
 519                 sides++;
 520             }
 521
 522             maRenderState = maOldRenderState; // pop
 523         }
 524
 525         void drawWidgets() // FIXME: prolly makes no sense
 526         {
 527             rendering::RenderState maOldRenderState = maRenderState; // push
 528             translate( maBox.Width() * 2.0, maBox.Height() * 2.0 );
 529
 530             drawTitle( OString( "Widgets" ) );
 531
 532             maRenderState = maOldRenderState; // pop
 533         }
 534 };
 535
 536
 537 void TestWindow::Paint(vcl::RenderContext&, const tools::Rectangle&)
 538 {
 539     try
 540     {
 541         uno::Reference< rendering::XCanvas > xVDevCanvas( GetCanvas(),
 542                                                           uno::UNO_SET_THROW );
 543         uno::Reference< rendering::XGraphicDevice > xVDevDevice( xVDevCanvas->getDevice(),
 544                                                                  uno::UNO_SET_THROW );
 545         DemoRenderer aVDevRenderer( xVDevDevice, xVDevCanvas, GetSizePixel());
 546         xVDevCanvas->clear();
 547         aVDevRenderer.drawGrid();
 548         aVDevRenderer.drawRectangles();
 549         aVDevRenderer.drawEllipses();
 550         aVDevRenderer.drawText();
 551         aVDevRenderer.drawLines();
 552         aVDevRenderer.drawCurves();
 553         aVDevRenderer.drawArcs();
 554         aVDevRenderer.drawPolygons();
 555
 556         uno::Reference< rendering::XCanvas > xCanvas( GetSpriteCanvas(),
 557                                                           uno::UNO_QUERY_THROW );
 558         uno::Reference< rendering::XGraphicDevice > xDevice( xCanvas->getDevice(),
 559                                                              uno::UNO_SET_THROW );
 560
 561         DemoRenderer aRenderer( xDevice, xCanvas, GetSizePixel() );
 562         xCanvas->clear();
 563         aRenderer.drawGrid();
 564         aRenderer.drawRectangles();
 565         aRenderer.drawEllipses();
 566         aRenderer.drawText();
 567         aRenderer.drawLines();
 568         aRenderer.drawCurves();
 569         aRenderer.drawArcs();
 570         aRenderer.drawPolygons();
 571         aRenderer.drawWidgets();
 572         aRenderer.drawImages();
 573
 574         // check whether virdev actually contained something
 575         uno::Reference< rendering::XBitmap > xBitmap(xVDevCanvas, uno::UNO_QUERY);
 576         if( !xBitmap.is() )
 577             return;
 578
 579         aRenderer.maRenderState.AffineTransform.m02 += 100;
 580         aRenderer.maRenderState.AffineTransform.m12 += 100;
 581         xCanvas->drawBitmap(xBitmap, aRenderer.maViewState, aRenderer.maRenderState);
 582
 583         uno::Reference< rendering::XSpriteCanvas > xSpriteCanvas( xCanvas,
 584                                                                   uno::UNO_QUERY );
 585         if( xSpriteCanvas.is() )
 586             xSpriteCanvas->updateScreen( true ); // without
 587                                                      // updateScreen(),
 588                                                      // nothing is
 589                                                      // visible
 590     }
 591     catch (const uno::Exception &e)
 592     {
 593         fprintf( stderr, "Exception '%s' thrown\n" ,
 594                  OUStringToOString( e.Message, RTL_TEXTENCODING_UTF8 ).getStr() );
 595     }
 596 }
 597
 598 class DemoApp : public Application
 599 {
 600 public:
 601     virtual int Main() override;
 602     virtual void Exception(ExceptionCategory nCategory) override;
 603
 604 protected:
 605     void Init() override;
 606     void DeInit() override;
 607 };
 608
 609 int DemoApp::Main()
 610 {
 611     bool bHelp = false;
 612
 613     for( unsigned int i = 0; i < GetCommandLineParamCount(); i++ )
 614     {
 615         OUString aParam = GetCommandLineParam( i );
 616
 617         if( aParam == "--help" || aParam == "-h" )
 618             bHelp = true;
 619     }
 620
 621     if( bHelp )
 622     {
 623         PrintHelp();
 624         return 1;
 625     }
 626
 627     ScopedVclPtr<TestWindow> aWindow = VclPtr<TestWindow>::Create();
 628     aWindow->Show();
 629
 630     Application::Execute();
 631     return 0;
 632 }
 633
 634 void DemoApp::Exception( ExceptionCategory nCategory )
 635 {
 636     switch( nCategory )
 637     {
 638         case ExceptionCategory::ResourceNotLoaded:
 639             Abort( "Error: could not load language resources.\nPlease check your installation.\n" );
 640             break;
 641         default:
 642             break;
 643     }
 644 }
 645
 646 void DemoApp::Init()
 647 {
 648     try
 649     {
 650         uno::Reference<uno::XComponentContext> xComponentContext
 651             = ::cppu::defaultBootstrap_InitialComponentContext();
 652         uno::Reference<lang::XMultiServiceFactory> xMSF;
 653         xMSF.set(xComponentContext->getServiceManager(), uno::UNO_QUERY);
 654         if(!xMSF.is())
 655             Application::Abort("Bootstrap failure - no service manager");
 656
 657         ::comphelper::setProcessServiceFactory(xMSF);
 658     }
 659     catch (const uno::Exception &e)
 660     {
 661         Application::Abort("Bootstrap exception " + e.Message);
 662     }
 663 }
 664
 665 void DemoApp::DeInit()
 666 {
 667     uno::Reference< lang::XComponent >(
 668         comphelper::getProcessComponentContext(),
 669         uno::UNO_QUERY_THROW)-> dispose();
 670     ::comphelper::setProcessServiceFactory(nullptr);
 671 }
 672
 673 void vclmain::createApplication()
 674 {
 675     static DemoApp aApp;
 676 }
 677
 678 // TODO
 679 //   - bouncing clip-rectangle mode - bounce a clip-rect around the window...
 680 //   - complete all of pre-existing canvas bits
 681 //   - affine transform tweakage...
 682
 683 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */