diff options
Diffstat (limited to 'grapher/Graph.cxx')
| -rw-r--r-- | grapher/Graph.cxx | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/grapher/Graph.cxx b/grapher/Graph.cxx index 4b5b8eb6..55ffcdf2 100644 --- a/grapher/Graph.cxx +++ b/grapher/Graph.cxx @@ -13,7 +13,8 @@ namespace systemtap : _width(600), _height(200), _graphX(0), _graphY(0), _graphWidth(580), _graphHeight(180), _lineWidth(2), _autoScaling(true), _autoScrolling(true), - _zoomFactor(1.0), _playButton(new CairoPlayButton), + _zoomFactor(1.0), _xOffset(20.0), _yOffset(0.0), + _playButton(new CairoPlayButton), _left(0), _right(1), _top(5.0), _bottom(0.0) { setOrigin(x, y); @@ -80,7 +81,7 @@ namespace systemtap cr->save(); double horizScale = _zoomFactor * _graphWidth / static_cast<double>(_right - _left); - cr->translate(20.0, 0.0); + cr->translate(_xOffset, _yOffset); cr->set_line_width(_lineWidth); for (DatasetList::iterator itr = _datasets.begin(), e = _datasets.end(); @@ -134,9 +135,9 @@ namespace systemtap cr->select_font_face("Sans", Cairo::FONT_SLANT_NORMAL, Cairo::FONT_WEIGHT_NORMAL); cr->set_font_size(10.0); - cr->move_to(20.0, 0.0); - cr->line_to(20.0, _height); - cr->move_to(20.0, _graphHeight); + cr->move_to(_xOffset, _yOffset); + cr->line_to(_xOffset, _height); + cr->move_to(_xOffset, _graphHeight); cr->line_to(_graphWidth, _graphHeight); cr->stroke(); std::valarray<double> dash(1); @@ -145,8 +146,8 @@ namespace systemtap double prevTextAdvance = 0; for (int64_t tickVal = startTime; tickVal <= _right; tickVal += majorUnit) { - double x = (tickVal - _left) * horizScale + 20.0; - cr->move_to(x, 0.0); + double x = (tickVal - _left) * horizScale + _xOffset; + cr->move_to(x, _yOffset); cr->line_to(x, _graphHeight); std::ostringstream stream; stream << tickVal; @@ -201,6 +202,7 @@ namespace systemtap int64_t Graph::getTimeAtPoint(double x) { - return _left + (_right - _left) * ((x - 20.0)/(_zoomFactor * _graphWidth)); + return (_left + + (_right - _left) * ((x - _xOffset)/(_zoomFactor * _graphWidth))); } } |