1 files changed, 84 insertions, 0 deletions
diff --git a/vcl/opengl/x11/cairotextrender.cxx b/vcl/opengl/x11/cairotextrender.cxx
new file mode 100644
index 000000000..39b5f661d
--- /dev/null
+++ b/vcl/opengl/x11/cairotextrender.cxx
@@ -0,0 +1,84 @@
+/* -*- 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 <opengl/x11/cairotextrender.hxx>
+
+#include <opengl/gdiimpl.hxx>
+
+#include <cairo.h>
+
+OpenGLX11CairoTextRender::OpenGLX11CairoTextRender(X11SalGraphics& rParent)
+    : X11CairoTextRender(rParent)
+{
+}
+
+cairo_t* OpenGLX11CairoTextRender::getCairoContext()
+{
+    cairo_surface_t* surface = nullptr;
+    OpenGLSalGraphicsImpl *pImpl = dynamic_cast< OpenGLSalGraphicsImpl* >(mrParent.GetImpl());
+    if( pImpl )
+    {
+        tools::Rectangle aClipRect = pImpl->getClipRegion().GetBoundRect();
+        if( aClipRect.GetWidth() == 0 || aClipRect.GetHeight() == 0 )
+        {
+            aClipRect.setWidth( GetWidth() );
+            aClipRect.setHeight( GetHeight() );
+        }
+        surface = cairo_image_surface_create( CAIRO_FORMAT_ARGB32, aClipRect.GetWidth(), aClipRect.GetHeight() );
+    }
+    if (!surface)
+        return nullptr;
+    cairo_t *cr = cairo_create(surface);
+    cairo_surface_destroy(surface);
+    return cr;
+}
+
+void OpenGLX11CairoTextRender::getSurfaceOffset( double& nDX, double& nDY )
+{
+    OpenGLSalGraphicsImpl *pImpl = dynamic_cast< OpenGLSalGraphicsImpl* >(mrParent.GetImpl());
+    if( pImpl )
+    {
+        tools::Rectangle aClipRect = pImpl->getClipRegion().GetBoundRect();
+        nDX = -aClipRect.Left();
+        nDY = -aClipRect.Top();
+    }
+}
+
+void OpenGLX11CairoTextRender::releaseCairoContext(cairo_t* cr)
+{
+    // XXX: lfrb: GLES 2.0 doesn't support GL_UNSIGNED_INT_8_8_8_8_REV
+    OpenGLSalGraphicsImpl *pImpl = dynamic_cast< OpenGLSalGraphicsImpl* >(mrParent.GetImpl());
+    if(!pImpl)
+    {
+        cairo_destroy(cr);
+        return;
+    }
+
+    cairo_surface_t* pSurface = cairo_get_target(cr);
+    int nWidth = cairo_image_surface_get_width( pSurface );
+    int nHeight = cairo_image_surface_get_height( pSurface );
+    cairo_surface_flush(pSurface);
+    unsigned char *pSrc = cairo_image_surface_get_data( pSurface );
+
+    // XXX: lfrb: GLES 2.0 doesn't support GL_UNSIGNED_INT_8_8_8_8_REV
+    tools::Rectangle aClipRect = pImpl->getClipRegion().GetBoundRect();
+
+    SalTwoRect aRect(0, 0, nWidth, nHeight,
+            aClipRect.Left(), aClipRect.Top(), nWidth, nHeight);
+
+    // Cairo surface data is ARGB with premultiplied alpha and is Y-inverted
+    OpenGLTexture aTexture( nWidth, nHeight, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, pSrc );
+    pImpl->PreDraw();
+    pImpl->DrawAlphaTexture( aTexture, aRect, true, true );
+    pImpl->PostDraw();
+
+    cairo_destroy(cr);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */