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Diffstat (limited to 'src/display/dither-lock.h')
-rw-r--r-- | src/display/dither-lock.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/src/display/dither-lock.h b/src/display/dither-lock.h new file mode 100644 index 0000000..975b91f --- /dev/null +++ b/src/display/dither-lock.h @@ -0,0 +1,37 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +#ifndef INKSCAPE_DISPLAY_DITHER_LOCK_H +#define INKSCAPE_DISPLAY_DITHER_LOCK_H + +#include "drawing-context.h" +#include "cairo-utils.h" + +namespace Inkscape { + +/// RAII object for temporarily turning dithering on. +class DitherLock +{ +public: + DitherLock(DrawingContext &dc, bool on) + : _cr(dc.rawTarget()) + , _on(on) + { + if (_on) { + ink_cairo_set_dither(_cr, true); + } + } + + ~DitherLock() + { + if (_on) { + ink_cairo_set_dither(_cr, false); + } + } + +private: + cairo_surface_t *_cr; + bool _on; +}; + +} // namespace Inkscape + +#endif // INKSCAPE_DISPLAY_DITHER_LOCK_H |