LibreOffice Module canvas (master) 1
dx_spritehelper.cxx
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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
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#include <sal/config.h>
21#include <sal/log.hxx>
22
31#include <rtl/math.hxx>
33
35
37#include "dx_impltools.hxx"
38#include "dx_spritehelper.hxx"
39
40using namespace ::com::sun::star;
41
42namespace dxcanvas
43{
46 mpBitmap(),
47 mbTextureDirty( true ),
48 mbShowSpriteBounds( false )
49 {
50 }
51
52 void SpriteHelper::init( const geometry::RealSize2D& rSpriteSize,
53 const SpriteCanvasRef& rSpriteCanvas,
54 const IDXRenderModuleSharedPtr& rRenderModule,
55 const DXSurfaceBitmapSharedPtr& rBitmap,
56 bool bShowSpriteBounds )
57 {
58 ENSURE_OR_THROW( rSpriteCanvas &&
59 rRenderModule &&
60 rBitmap,
61 "SpriteHelper::init(): Invalid device, sprite canvas or surface" );
62
63 mpSpriteCanvas = rSpriteCanvas;
64 mpBitmap = rBitmap;
65 mbTextureDirty = true;
66 mbShowSpriteBounds = bShowSpriteBounds;
67
68 // also init base class
69 CanvasCustomSpriteHelper::init( rSpriteSize,
70 rSpriteCanvas );
71 }
72
74 {
75 mpBitmap.reset();
76 mpSpriteCanvas.clear();
77
78 // forward to parent
79 CanvasCustomSpriteHelper::disposing();
80 }
81
82 ::basegfx::B2DPolyPolygon SpriteHelper::polyPolygonFromXPolyPolygon2D( uno::Reference< rendering::XPolyPolygon2D >& xPoly ) const
83 {
85 }
86
88 {
89 if( !mpBitmap ||
91 {
92 return false; // we're disposed, no redraw necessary
93 }
94
95 if( !isActive() ||
96 ::basegfx::fTools::equalZero( getAlpha() ) )
97 {
98 return false; // sprite is invisible
99 }
100
101 return true;
102 }
103
104 void SpriteHelper::redraw( bool& io_bSurfaceDirty ) const
105 {
106 if( !mpBitmap ||
108 {
109 return; // we're disposed
110 }
111
112 const ::basegfx::B2DPoint& rPos( getPosPixel() );
113 const double fAlpha( getAlpha() );
114
115 if( isActive() &&
116 !::basegfx::fTools::equalZero( fAlpha ) )
117 {
118
119 // TODO(Q2): For the time being, Device does not take a target
120 // surface, but always unconditionally renders to the
121 // background buffer.
122
123 // log output pos in device pixel
124 SAL_INFO("canvas.directx", "SpriteHelper::redraw(): output pos is (" <<
125 rPos.getX() << "," << rPos.getY() << ")" );
126
127 const ::basegfx::B2DVector& rSize( getSizePixel() );
128 const ::basegfx::B2DHomMatrix& rTransform( getTransformation() );
129 const uno::Reference< rendering::XPolyPolygon2D >& xClip( getClip() );
130
131 mbTextureDirty = false;
132 io_bSurfaceDirty = false; // state taken, and processed.
133
134 ::basegfx::B2DPolyPolygon aClipPath; // empty for no clip
135 bool bIsClipRectangular( false ); // false, if no
136 // clip, or clip
137 // is complex
138
139 // setup and apply clip (if any)
140 // =================================
141
142 if( xClip.is() )
143 {
144 aClipPath = tools::polyPolygonFromXPolyPolygon2D( xClip );
145
146 const sal_Int32 nNumClipPolygons( aClipPath.count() );
147 if( nNumClipPolygons )
148 {
149 // TODO(P2): hold rectangle attribute directly
150 // at the XPolyPolygon2D
151
152 // check whether the clip is rectangular
153 if( nNumClipPolygons == 1 )
154 if( ::basegfx::utils::isRectangle( aClipPath.getB2DPolygon( 0 ) ) )
155 bIsClipRectangular = true;
156 }
157 }
158
159 const ::basegfx::B2DRectangle aSourceRect( 0.0,
160 0.0,
161 rSize.getX(),
162 rSize.getY() );
163
164 // draw simple rectangular area if no clip is set.
165 if( !aClipPath.count() )
166 {
167 mpBitmap->draw(fAlpha,rPos,rTransform);
168 }
169 else if( bIsClipRectangular )
170 {
171 // apply a simple rect clip
172 // ========================
173
174 ::basegfx::B2DRectangle aClipBounds(
175 ::basegfx::utils::getRange( aClipPath ) );
176 aClipBounds.intersect( aSourceRect );
177
178 mpBitmap->draw(fAlpha,rPos,aClipBounds,rTransform);
179 }
180 else
181 {
182 // apply clip the hard way
183 // =======================
184
185 mpBitmap->draw(fAlpha,rPos,aClipPath,rTransform);
186 }
187
189 {
190 if( aClipPath.count() )
191 {
192 // TODO(F2): Re-enable debug output
193 }
194 }
195 }
196 }
197}
198
199/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
FPDF_BITMAP mpBitmap
B2DPolygon const & getB2DPolygon(sal_uInt32 nIndex) const
sal_uInt32 count() const
void intersect(const Range2D &rRange)
const css::uno::Reference< css::rendering::XPolyPolygon2D > & getClip() const
Retrieve current clip.
bool isActive() const
Retrieve current activation state.
const ::basegfx::B2DHomMatrix & getTransformation() const
const ::basegfx::B2DPoint & getPosPixel() const
double getAlpha() const
Retrieve current alpha value.
const ::basegfx::B2DVector & getSizePixel() const
bool needRedraw() const
Returns true, if the sprite really needs redraw.
void redraw(bool &io_bSurfaceDirty) const
Repaint sprite content via hardware to associated sprite canvas.
SpriteCanvasRef mpSpriteCanvas
DXSurfaceBitmapSharedPtr mpBitmap
virtual ::basegfx::B2DPolyPolygon polyPolygonFromXPolyPolygon2D(css::uno::Reference< css::rendering::XPolyPolygon2D > &xPoly) const override
Called to convert an API polygon to a basegfx polygon.
SpriteHelper()
Create sprite helper.
void init(const css::geometry::RealSize2D &rSpriteSize, const SpriteCanvasRef &rSpriteCanvas, const IDXRenderModuleSharedPtr &rRenderModule, const DXSurfaceBitmapSharedPtr &rBitmap, bool bShowSpriteBounds)
Late-init the sprite helper.
#define ENSURE_OR_THROW(c, m)
#define SAL_INFO(area, stream)
::basegfx::B2DPolyPolygon polyPolygonFromXPolyPolygon2D(const uno::Reference< rendering::XPolyPolygon2D > &xPoly)
std::shared_ptr< DXSurfaceBitmap > DXSurfaceBitmapSharedPtr
std::shared_ptr< IDXRenderModule > IDXRenderModuleSharedPtr
bool isRectangle(const ::tools::PolyPolygon &rPolyPoly)
Predicate, to determine whether polygon is actually an axis-aligned rectangle.
Definition: impltools.cxx:165
const cppcanvas::SpriteCanvasSharedPtr mpSpriteCanvas