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#include <algorithm>
#include <ctime>
#include <math.h>
#include <cairomm/context.h>
#include "GraphWidget.hxx"
#include "CairoWidget.hxx"
namespace systemtap
{
using namespace std;
using namespace std::tr1;
GraphWidget::GraphWidget()
: _trackingDrag(false), _width(600), _height(200)
{
add_events(Gdk::POINTER_MOTION_MASK | Gdk::BUTTON_PRESS_MASK
| Gdk::BUTTON_RELEASE_MASK | Gdk::SCROLL_MASK);
Glib::signal_timeout()
.connect(sigc::mem_fun(*this, &GraphWidget::on_timeout), 1000);
signal_expose_event()
.connect(sigc::mem_fun(*this, &GraphWidget::on_expose_event), false);
signal_button_press_event()
.connect(sigc::mem_fun(*this, &GraphWidget::on_button_press_event),
false);
signal_button_release_event()
.connect(sigc::mem_fun(*this, &GraphWidget::on_button_release_event),
false);
signal_motion_notify_event()
.connect(sigc::mem_fun(*this, &GraphWidget::on_motion_notify_event),
false);
signal_scroll_event()
.connect(sigc::mem_fun(*this, &GraphWidget::on_scroll_event), false);
// Temporary testing of multiple graphs
shared_ptr<Graph> graph(new Graph);
_graphs.push_back(graph);
}
GraphWidget::~GraphWidget()
{
}
void GraphWidget::addGraphData(std::tr1::shared_ptr<GraphDataBase> data)
{
_graphs[0]->addGraphData(data);
}
void GraphWidget::addGraph()
{
shared_ptr<Graph> graph(new Graph);
double x = 0.0;
double y = 0.0;
if (!_graphs.empty())
{
_graphs.back()->getOrigin(x, y);
y += _graphs.back()->_height + 10;
_height = y + graph->_height;
}
graph->setOrigin(x, y);
_graphs.push_back(graph);
queue_resize();
}
bool GraphWidget::on_expose_event(GdkEventExpose* event)
{
// This is where we draw on the window
Glib::RefPtr<Gdk::Window> window = get_window();
if(!window)
return true;
Cairo::RefPtr<Cairo::Context> cr = window->create_cairo_context();
#if 0
if(event && !_autoScaling)
{
// clip to the area indicated by the expose event so that we only
// redraw the portion of the window that needs to be redrawn
cr->rectangle(event->area.x, event->area.y,
event->area.width, event->area.height);
cr->clip();
}
#endif
cr->save();
cr->set_source_rgba(0.0, 0.0, 0.0, 1.0);
cr->paint();
for (GraphList::iterator g = _graphs.begin(); g != _graphs.end(); ++g)
{
double x, y;
(*g)->getOrigin(x, y);
cr->save();
cr->translate(x, y);
(*g)->draw(cr);
cr->restore();
}
return true;
}
bool GraphWidget::on_button_press_event(GdkEventButton* event)
{
for (GraphList::iterator g = _graphs.begin(); g != _graphs.end(); ++g)
{
if (event->x >= (*g)->_graphX
&& event->x < (*g)->_graphX + (*g)->_graphWidth
&& event->y >= (*g)->_graphY
&& event->y < (*g)->_graphY + (*g)->_graphHeight)
{
_activeGraph = *g;
break;
}
}
if (!_activeGraph)
return true;
if (!_activeGraph->_autoScrolling
&& _activeGraph->_playButton->containsPoint(event->x, event->y))
{
_activeGraph->_autoScaling = true;
_activeGraph->_autoScrolling = true;
queue_draw();
}
else
{
_trackingDrag = true;
_activeGraph->_autoScaling = false;
_activeGraph->_autoScrolling = false;
_dragOriginX = event->x;
_dragOriginY = event->y;
_dragOrigLeft = _activeGraph->_left;
_dragOrigRight = _activeGraph->_right;
}
return true;
}
bool GraphWidget::on_button_release_event(GdkEventButton* event)
{
_trackingDrag = false;
return true;
}
bool GraphWidget::on_motion_notify_event(GdkEventMotion* event)
{
Glib::RefPtr<Gdk::Window> win = get_window();
if(!win)
return true;
double x = 0.0;
double y = 0.0;
// XXX Hint
if (event->is_hint)
{
}
else
{
x = event->x;
y = event->y;
}
if (_trackingDrag && _activeGraph)
{
Gtk::Allocation allocation = get_allocation();
const int width = allocation.get_width();
double motion = (x - _dragOriginX) / (double) width;
double increment = motion * (_dragOrigLeft - _dragOrigRight);
_activeGraph->_left = _dragOrigLeft + increment;
_activeGraph->_right = _dragOrigRight + increment;
queue_draw();
}
return true;
}
bool GraphWidget::on_scroll_event(GdkEventScroll* event)
{
for (GraphList::iterator gitr = _graphs.begin();
gitr != _graphs.end();
++gitr)
{
if ((*gitr)->containsPoint(event->x, event->y))
{
if (event->direction == GDK_SCROLL_UP)
(*gitr)->_zoomFactor += .1;
else if (event->direction == GDK_SCROLL_DOWN)
(*gitr)->_zoomFactor -= .1;
queue_draw();
break;
}
}
return true;
}
bool GraphWidget::on_timeout()
{
queue_draw();
return true;
}
void GraphWidget::on_size_request(Gtk::Requisition* req)
{
req->width = _width;
req->height = _height;
}
}
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