diff options
| author | Tim Mayberry <mojofunk@gmail.com> | 2017-03-13 20:45:13 +1000 |
|---|---|---|
| committer | Tim Mayberry <mojofunk@gmail.com> | 2017-06-26 08:40:47 +1000 |
| commit | dac25b8db9686f4a6dd03fcc2d616004b1c1dd44 (patch) | |
| tree | bd4542fbf0f663bfc4154cf7c3197b42db0705ca /libs/canvas | |
| parent | 9618b6dcbbc6f7e1e657d5aa859e07d528928d53 (diff) | |
Add PreRender signal to the canvas
Emitted by the canvas immediately before rendering.
Diffstat (limited to 'libs/canvas')
| -rw-r--r-- | libs/canvas/canvas.cc | 2 | ||||
| -rw-r--r-- | libs/canvas/canvas/canvas.h | 2 |
2 files changed, 4 insertions, 0 deletions
diff --git a/libs/canvas/canvas.cc b/libs/canvas/canvas.cc index fb06b06b97..be61b6cb84 100644 --- a/libs/canvas/canvas.cc +++ b/libs/canvas/canvas.cc @@ -101,6 +101,8 @@ Canvas::zoomed () void Canvas::render (Rect const & area, Cairo::RefPtr<Cairo::Context> const & context) const { + PreRender (); // emit signal + #ifdef CANVAS_DEBUG if (DEBUG_ENABLED(PBD::DEBUG::CanvasRender)) { cerr << this << " RENDER: " << area << endl; diff --git a/libs/canvas/canvas/canvas.h b/libs/canvas/canvas/canvas.h index 934f1fe08e..2f506fc3c0 100644 --- a/libs/canvas/canvas/canvas.h +++ b/libs/canvas/canvas/canvas.h @@ -135,6 +135,8 @@ public: */ sigc::signal<void,Duple const&> MouseMotion; + sigc::signal<void> PreRender; + /** Ensures that the position given by @param winpos (in window coordinates) is within the current window area, possibly reduced by @param border. |