diff options
Diffstat (limited to 'grapher/Graph.cxx')
| -rw-r--r-- | grapher/Graph.cxx | 386 |
1 files changed, 193 insertions, 193 deletions
diff --git a/grapher/Graph.cxx b/grapher/Graph.cxx index ea1bd091..dc808fa4 100644 --- a/grapher/Graph.cxx +++ b/grapher/Graph.cxx @@ -14,213 +14,213 @@ namespace systemtap { - using namespace std; - using namespace std::tr1; +using namespace std; +using namespace std::tr1; - GraphDataList GraphDataBase::graphData; - sigc::signal<void> GraphDataBase::graphDataChanged; +GraphDataList GraphDataBase::graphData; +sigc::signal<void> GraphDataBase::graphDataChanged; - Graph::Graph(double x, double y) - : _width(600), _height(200), _graphX(0), _graphY(0), - _graphWidth(580), _graphHeight(180), - _lineWidth(2), _autoScaling(true), _autoScrolling(true), - _zoomFactor(1.0), _xOffset(20.0), _yOffset(0.0), - _playButton(new CairoPlayButton), _timeBase(0), - _left(0), _right(1), _top(5.0), _bottom(0.0) - { - setOrigin(x, y); - _graphX = x; - _graphY = y; - } +Graph::Graph(double x, double y) + : _width(600), _height(200), _graphX(0), _graphY(0), + _graphWidth(580), _graphHeight(180), + _lineWidth(2), _autoScaling(true), _autoScrolling(true), + _zoomFactor(1.0), _xOffset(20.0), _yOffset(0.0), + _playButton(new CairoPlayButton), _timeBase(0), + _left(0), _right(1), _top(5.0), _bottom(0.0) +{ + setOrigin(x, y); + _graphX = x; + _graphY = y; +} - void Graph::draw(Cairo::RefPtr<Cairo::Context> cr) - { +void Graph::draw(Cairo::RefPtr<Cairo::Context> cr) +{ - if (_autoScaling) - { - // line separation - int linesPossible = (int)(_graphWidth / (_lineWidth + 2.0)); - // Find latest time. - int64_t latestTime = 0; - for (GraphDataList::iterator ditr = _datasets.begin(), - de = _datasets.end(); - ditr != de; - ++ditr) - { - if (!(*ditr)->times.empty()) - { - int64_t lastDataTime = (*ditr)->times.back(); - if (lastDataTime > latestTime) - latestTime = lastDataTime; - } - } - int64_t minDiff = 0; - int64_t maxTotal = 0; - for (GraphDataList::iterator ditr = _datasets.begin(), - de = _datasets.end(); - ditr != de; - ++ditr) - { - GraphDataBase::TimeList& gtimes = (*ditr)->times; - if (gtimes.size() <= 1) - continue; - double totalDiff = 0.0; - for (GraphDataBase::TimeList::reverse_iterator ritr = gtimes.rbegin(), - re = gtimes.rend(); - ritr + 1 != gtimes.rend(); - ritr++) - { - int64_t timeDiff = *ritr - *(ritr + 1); - if (timeDiff < minDiff || (timeDiff != 0 && minDiff == 0)) - minDiff = timeDiff; - if (minDiff != 0 - && ((totalDiff + timeDiff) / minDiff + 1) > linesPossible) - break; - totalDiff += timeDiff; - } - if (totalDiff > maxTotal) - maxTotal = totalDiff; - } - // Now we have a global scale. - _right = latestTime; - if (maxTotal != 0) - _left = latestTime - maxTotal; - else - _left = _right - 1; - } - cr->save(); - double horizScale - = _zoomFactor * _graphWidth / static_cast<double>(_right - _left); - cr->translate(_xOffset, _yOffset); - cr->set_line_width(_lineWidth); + if (_autoScaling) + { + // line separation + int linesPossible = (int)(_graphWidth / (_lineWidth + 2.0)); + // Find latest time. + int64_t latestTime = 0; + for (GraphDataList::iterator ditr = _datasets.begin(), + de = _datasets.end(); + ditr != de; + ++ditr) + { + if (!(*ditr)->times.empty()) + { + int64_t lastDataTime = (*ditr)->times.back(); + if (lastDataTime > latestTime) + latestTime = lastDataTime; + } + } + int64_t minDiff = 0; + int64_t maxTotal = 0; + for (GraphDataList::iterator ditr = _datasets.begin(), + de = _datasets.end(); + ditr != de; + ++ditr) + { + GraphDataBase::TimeList& gtimes = (*ditr)->times; + if (gtimes.size() <= 1) + continue; + double totalDiff = 0.0; + for (GraphDataBase::TimeList::reverse_iterator ritr = gtimes.rbegin(), + re = gtimes.rend(); + ritr + 1 != gtimes.rend(); + ritr++) + { + int64_t timeDiff = *ritr - *(ritr + 1); + if (timeDiff < minDiff || (timeDiff != 0 && minDiff == 0)) + minDiff = timeDiff; + if (minDiff != 0 + && ((totalDiff + timeDiff) / minDiff + 1) > linesPossible) + break; + totalDiff += timeDiff; + } + if (totalDiff > maxTotal) + maxTotal = totalDiff; + } + // Now we have a global scale. + _right = latestTime; + if (maxTotal != 0) + _left = latestTime - maxTotal; + else + _left = _right - 1; + } + cr->save(); + double horizScale + = _zoomFactor * _graphWidth / static_cast<double>(_right - _left); + cr->translate(_xOffset, _yOffset); + cr->set_line_width(_lineWidth); - for (GraphDataList::iterator itr = _datasets.begin(), e = _datasets.end(); - itr != e; - ++itr) - { - shared_ptr<GraphDataBase> graphData = *itr; - cr->save(); - cr->translate(0.0, _graphHeight); - cr->scale(1.0, -1.0); - graphData->style->draw(graphData, this, cr); - cr->restore(); - cr->save(); - cr->select_font_face("Sans", Cairo::FONT_SLANT_NORMAL, - Cairo::FONT_WEIGHT_BOLD); - cr->set_font_size(14.0); - cr->set_source_rgba(1.0, 1.0, 1.0, .8); + for (GraphDataList::iterator itr = _datasets.begin(), e = _datasets.end(); + itr != e; + ++itr) + { + shared_ptr<GraphDataBase> graphData = *itr; + cr->save(); + cr->translate(0.0, _graphHeight); + cr->scale(1.0, -1.0); + graphData->style->draw(graphData, this, cr); + cr->restore(); + cr->save(); + cr->select_font_face("Sans", Cairo::FONT_SLANT_NORMAL, + Cairo::FONT_WEIGHT_BOLD); + cr->set_font_size(14.0); + cr->set_source_rgba(1.0, 1.0, 1.0, .8); - if (!graphData->title.empty()) - { - cr->move_to(20.0, 20.0); - cr->show_text(graphData->title); - } - if (!graphData->xAxisText.empty()) - { - cr->move_to(10.0, _graphHeight - 5); - cr->show_text(graphData->xAxisText); - } - if (!graphData->yAxisText.empty()) - { - cr->save(); - cr->translate(10.0, _height - 10.0); - cr->rotate(-M_PI / 2.0); - cr->move_to(10.0, 0.0); - cr->show_text(graphData->yAxisText); - cr->restore(); - } - cr->restore(); + if (!graphData->title.empty()) + { + cr->move_to(20.0, 20.0); + cr->show_text(graphData->title); + } + if (!graphData->xAxisText.empty()) + { + cr->move_to(10.0, _graphHeight - 5); + cr->show_text(graphData->xAxisText); + } + if (!graphData->yAxisText.empty()) + { + cr->save(); + cr->translate(10.0, _height - 10.0); + cr->rotate(-M_PI / 2.0); + cr->move_to(10.0, 0.0); + cr->show_text(graphData->yAxisText); + cr->restore(); + } + cr->restore(); - } - cr->restore(); - // Draw axes - double diff = static_cast<double>(_right - _left); - int64_t majorUnit - = static_cast<int64_t>(pow(10.0, floor(log(diff) / log(10.0)))); - int64_t startTime = (_left / majorUnit) * majorUnit; - cr->save(); - cr->set_source_rgba(1.0, 1.0, 1.0, .9); - cr->set_line_cap(Cairo::LINE_CAP_BUTT); - cr->set_line_width(_lineWidth); - cr->select_font_face("Sans", Cairo::FONT_SLANT_NORMAL, - Cairo::FONT_WEIGHT_NORMAL); - cr->set_font_size(10.0); - 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); - dash[0] = _graphHeight / 10; - cr->set_dash(dash, 0); - double prevTextAdvance = 0; - for (int64_t tickVal = startTime; tickVal <= _right; tickVal += majorUnit) - { - double x = (tickVal - _left) * horizScale + _xOffset; - cr->move_to(x, _yOffset); - cr->line_to(x, _graphHeight); - std::ostringstream stream; - stream << (tickVal - _timeBase); - Cairo::TextExtents extents; - cr->get_text_extents(stream.str(), extents); - // Room for this label? - if (x + extents.x_bearing > prevTextAdvance) - { - cr->move_to(x, _graphHeight + 5 + extents.height); - cr->show_text(stream.str()); - prevTextAdvance = x + extents.x_advance; - } - } - cr->stroke(); - cr->restore(); + } + cr->restore(); + // Draw axes + double diff = static_cast<double>(_right - _left); + int64_t majorUnit + = static_cast<int64_t>(pow(10.0, floor(log(diff) / log(10.0)))); + int64_t startTime = (_left / majorUnit) * majorUnit; + cr->save(); + cr->set_source_rgba(1.0, 1.0, 1.0, .9); + cr->set_line_cap(Cairo::LINE_CAP_BUTT); + cr->set_line_width(_lineWidth); + cr->select_font_face("Sans", Cairo::FONT_SLANT_NORMAL, + Cairo::FONT_WEIGHT_NORMAL); + cr->set_font_size(10.0); + 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); + dash[0] = _graphHeight / 10; + cr->set_dash(dash, 0); + double prevTextAdvance = 0; + for (int64_t tickVal = startTime; tickVal <= _right; tickVal += majorUnit) + { + double x = (tickVal - _left) * horizScale + _xOffset; + cr->move_to(x, _yOffset); + cr->line_to(x, _graphHeight); + std::ostringstream stream; + stream << (tickVal - _timeBase); + Cairo::TextExtents extents; + cr->get_text_extents(stream.str(), extents); + // Room for this label? + if (x + extents.x_bearing > prevTextAdvance) + { + cr->move_to(x, _graphHeight + 5 + extents.height); + cr->show_text(stream.str()); + prevTextAdvance = x + extents.x_advance; + } + } + cr->stroke(); + cr->restore(); - if (!_autoScrolling) - { - _playButton->setVisible(true); - _playButton->setOrigin(_graphWidth / 2 - 25, .875 * _graphHeight - 50); - _playButton->draw(cr); - } + if (!_autoScrolling) + { + _playButton->setVisible(true); + _playButton->setOrigin(_graphWidth / 2 - 25, .875 * _graphHeight - 50); + _playButton->draw(cr); + } - } +} - void Graph::addGraphData(shared_ptr<GraphDataBase> data) - { - _datasets.push_back(data); - } +void Graph::addGraphData(shared_ptr<GraphDataBase> data) +{ + _datasets.push_back(data); +} - void Graph::getExtents(int64_t& left, int64_t& right, double& top, - double& bottom) const - { - left = _left; - right = _right; - top = _top; - bottom = _bottom; - } +void Graph::getExtents(int64_t& left, int64_t& right, double& top, + double& bottom) const +{ + left = _left; + right = _right; + top = _top; + bottom = _bottom; +} - void Graph::setExtents(int64_t left, int64_t right, double top, double bottom) - { - _left = left; - _right = right; - _top = top; - _bottom = bottom; - } +void Graph::setExtents(int64_t left, int64_t right, double top, double bottom) +{ + _left = left; + _right = right; + _top = top; + _bottom = bottom; +} - bool Graph::containsPoint(double x, double y) - { - return x >= _x0 && x < _x0 + _width && y >= _y0 && y < _y0 + _height; - } +bool Graph::containsPoint(double x, double y) +{ + return x >= _x0 && x < _x0 + _width && y >= _y0 && y < _y0 + _height; +} - int64_t Graph::getTimeAtPoint(double x) - { - return (_left - + (_right - _left) * ((x - _xOffset)/(_zoomFactor * _graphWidth))); - } +int64_t Graph::getTimeAtPoint(double x) +{ + return (_left + + (_right - _left) * ((x - _xOffset)/(_zoomFactor * _graphWidth))); +} - void Graph::window2GraphCoords(double x, double y, - double& xgraph, double& ygraph) - { - xgraph = x -_xOffset; - ygraph = -(y - _graphY) + _yOffset + _graphHeight; - } +void Graph::window2GraphCoords(double x, double y, + double& xgraph, double& ygraph) +{ + xgraph = x -_xOffset; + ygraph = -(y - _graphY) + _yOffset + _graphHeight; +} } |