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-rw-r--r--canvas/source/opengl/ogl_canvascustomsprite.cxx261
1 files changed, 261 insertions, 0 deletions
diff --git a/canvas/source/opengl/ogl_canvascustomsprite.cxx b/canvas/source/opengl/ogl_canvascustomsprite.cxx
new file mode 100644
index 000000000..c7ca59b28
--- /dev/null
+++ b/canvas/source/opengl/ogl_canvascustomsprite.cxx
@@ -0,0 +1,261 @@
+/* -*- 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/b2dpolygontriangulator.hxx>
+#include <basegfx/utils/canvastools.hxx>
+#include <canvas/canvastools.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),
+ mxClip(),
+ maTransformation(),
+ maPosition(),
+ mfAlpha(0.0),
+ mfPriority(0.0)
+ {
+ ENSURE_OR_THROW( rRefDevice.get(),
+ "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,
+ OSL_THIS_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;
+ aVec.push_back(mfAlpha);
+ aVec.push_back(mfPriority);
+ aVec.push_back(maCanvasHelper.getRecordedActionCount());
+ renderOSD( aVec, 10 );
+
+ return true;
+ }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-01 06:30:57 +0000