1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
|
/* -*- 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/.
*/
#include <sal/config.h>
#include <epoxy/gl.h>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include <basegfx/point/b2dpoint.hxx>
#include <basegfx/polygon/b2dpolypolygon.hxx>
#include <basegfx/polygon/b2dpolygontriangulator.hxx>
#include <basegfx/utils/canvastools.hxx>
#include <canvas/canvastools.hxx>
#include <o3tl/safeint.hxx>
#include <verifyinput.hxx>
#include <tools/diagnose_ex.h>
#include "ogl_canvascustomsprite.hxx"
#include "ogl_canvastools.hxx"
#include "ogl_tools.hxx"
using namespace ::com::sun::star;
namespace oglcanvas
{
CanvasCustomSprite::CanvasCustomSprite( const css::geometry::RealSize2D& rSpriteSize,
const SpriteCanvasRef& rRefDevice,
SpriteDeviceHelper& rDeviceHelper ) :
mpSpriteCanvas( rRefDevice ),
maSize(rSpriteSize),
mfAlpha(0.0),
mfPriority(0.0)
{
ENSURE_OR_THROW( rRefDevice,
"CanvasCustomSprite::CanvasCustomSprite(): Invalid sprite canvas" );
::canvas::tools::setIdentityAffineMatrix2D(maTransformation);
maCanvasHelper.init( *rRefDevice,
rDeviceHelper );
}
void CanvasCustomSprite::disposeThis()
{
::osl::MutexGuard aGuard( m_aMutex );
mpSpriteCanvas.clear();
// forward to parent
CanvasCustomSpriteBaseT::disposeThis();
}
void SAL_CALL CanvasCustomSprite::setAlpha( double alpha )
{
canvas::tools::verifyRange( alpha, 0.0, 1.0 );
::osl::MutexGuard aGuard( m_aMutex );
mfAlpha = alpha;
}
void SAL_CALL CanvasCustomSprite::move( const geometry::RealPoint2D& aNewPos,
const rendering::ViewState& viewState,
const rendering::RenderState& renderState )
{
canvas::tools::verifyArgs(aNewPos, viewState, renderState,
__func__,
static_cast< ::cppu::OWeakObject* >(this));
::osl::MutexGuard aGuard( m_aMutex );
::basegfx::B2DHomMatrix aTransform;
::canvas::tools::mergeViewAndRenderTransform(aTransform,
viewState,
renderState);
// convert position to device pixel
maPosition = ::basegfx::unotools::b2DPointFromRealPoint2D(aNewPos);
maPosition *= aTransform;
}
void SAL_CALL CanvasCustomSprite::transform( const geometry::AffineMatrix2D& aTransformation )
{
::osl::MutexGuard aGuard( m_aMutex );
maTransformation = aTransformation;
}
void SAL_CALL CanvasCustomSprite::clip( const uno::Reference< rendering::XPolyPolygon2D >& xClip )
{
mxClip = xClip;
}
void SAL_CALL CanvasCustomSprite::setPriority( double nPriority )
{
::osl::MutexGuard aGuard( m_aMutex );
mfPriority = nPriority;
}
void SAL_CALL CanvasCustomSprite::show()
{
::osl::MutexGuard aGuard( m_aMutex );
if( mpSpriteCanvas.is() )
mpSpriteCanvas->show(this);
}
void SAL_CALL CanvasCustomSprite::hide()
{
::osl::MutexGuard aGuard( m_aMutex );
if( mpSpriteCanvas.is() )
mpSpriteCanvas->hide(this);
}
uno::Reference< rendering::XCanvas > SAL_CALL CanvasCustomSprite::getContentCanvas()
{
return this;
}
bool CanvasCustomSprite::renderSprite() const
{
if( ::basegfx::fTools::equalZero( mfAlpha ) )
return true;
TransformationPreserver aPreserver1;
const ::basegfx::B2IVector aSpriteSizePixel(
::canvas::tools::roundUp( maSize.Width ),
::canvas::tools::roundUp( maSize.Height ));
// translate sprite to output position
glTranslated(maPosition.getX(), maPosition.getY(), 0);
{
TransformationPreserver aPreserver2;
// apply sprite content transformation matrix
double aGLTransform[] =
{
maTransformation.m00, maTransformation.m10, 0, 0,
maTransformation.m01, maTransformation.m11, 0, 0,
0, 0, 1, 0,
maTransformation.m02, maTransformation.m12, 0, 1
};
glMultMatrixd(aGLTransform);
IBufferContextSharedPtr pBufferContext;
if( mfAlpha != 1.0 || mxClip.is() )
{
// drafts. Need to render to temp surface before, and then
// composite that to screen
// TODO(P3): buffer texture
pBufferContext = maCanvasHelper.getDeviceHelper()->createBufferContext(aSpriteSizePixel);
pBufferContext->startBufferRendering();
}
// this ends up in pBufferContext, if that one's "current"
if( !maCanvasHelper.renderRecordedActions() )
return false;
if( pBufferContext )
{
// content ended up in background buffer - compose to
// screen now. Calls below switches us back to window
// context, and binds to generated, dynamic texture
pBufferContext->endBufferRendering();
GLuint nTexture = pBufferContext->getTextureId();
glBindTexture(GL_TEXTURE_2D, nTexture);
glEnable(GL_TEXTURE_2D);
glTexParameteri(GL_TEXTURE_2D,
GL_TEXTURE_MIN_FILTER,
GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D,
GL_TEXTURE_MAG_FILTER,
GL_NEAREST);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA,
GL_ONE_MINUS_SRC_ALPHA);
// blend against fixed vertex color; texture alpha is multiplied in
glColor4f(1,1,1,mfAlpha);
if( mxClip.is() )
{
const double fWidth=maSize.Width;
const double fHeight=maSize.Height;
// TODO(P3): buffer triangulation
const ::basegfx::triangulator::B2DTriangleVector rTriangulatedPolygon(
::basegfx::triangulator::triangulate(
::basegfx::unotools::b2DPolyPolygonFromXPolyPolygon2D(mxClip)));
glBegin(GL_TRIANGLES);
for( size_t i=0; i<rTriangulatedPolygon.size(); i++ )
{
const::basegfx::triangulator::B2DTriangle& rCandidate(rTriangulatedPolygon[i]);
glTexCoord2f(
rCandidate.getA().getX()/fWidth,
rCandidate.getA().getY()/fHeight);
glVertex2d(
rCandidate.getA().getX(),
rCandidate.getA().getY());
glTexCoord2f(
rCandidate.getB().getX()/fWidth,
rCandidate.getB().getY()/fHeight);
glVertex2d(
rCandidate.getB().getX(),
rCandidate.getB().getY());
glTexCoord2f(
rCandidate.getC().getX()/fWidth,
rCandidate.getC().getY()/fHeight);
glVertex2d(
rCandidate.getC().getX(),
rCandidate.getC().getY());
}
glEnd();
}
else
{
const double fWidth=maSize.Width/aSpriteSizePixel.getX();
const double fHeight=maSize.Height/aSpriteSizePixel.getY();
glBegin(GL_TRIANGLE_STRIP);
glTexCoord2f(0,0); glVertex2d(0,0);
glTexCoord2f(0,fHeight); glVertex2d(0, aSpriteSizePixel.getY());
glTexCoord2f(fWidth,0); glVertex2d(aSpriteSizePixel.getX(),0);
glTexCoord2f(fWidth,fHeight); glVertex2d(aSpriteSizePixel.getX(),aSpriteSizePixel.getY());
glEnd();
}
glBindTexture(GL_TEXTURE_2D, 0);
glDisable(GL_TEXTURE_2D);
}
}
glColor4f(1,0,0,1);
glBegin(GL_LINE_STRIP);
glVertex2d(-2,-2);
glVertex2d(-2,maSize.Height+4);
glVertex2d(maSize.Width+4,maSize.Height+4);
glVertex2d(maSize.Width+4,-2);
glVertex2d(-2,-2);
glVertex2d(maSize.Width+4,maSize.Height+4);
glEnd();
std::vector<double> aVec { mfAlpha, mfPriority, o3tl::narrowing<double>(maCanvasHelper.getRecordedActionCount()) };
renderOSD( aVec, 10 );
return true;
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
