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PStatPianoRoll Class Reference

This is an abstract class that presents the interface for drawing a piano-roll type chart: it shows the time spent in each of a number of collectors as a horizontal bar of color, with time as the horizontal axis. More...

#include "pStatPianoRoll.h"

Inheritance diagram for PStatPianoRoll:
PStatGraph GtkStatsPianoRoll WinStatsPianoRoll

List of all members.

Classes

class  BarBuilder
class  ColorBar

Public Member Functions

 PStatPianoRoll (PStatMonitor *monitor, int thread_index, int xsize, int ysize)
double get_horizontal_scale () const
 Returns the amount of total time the width of the horizontal axis represents.
int height_to_pixel (double value) const
 Converts a value (i.e.
double pixel_to_height (int y) const
 Converts a horizontal pixel offset to a value (a "height" in the strip chart).
double pixel_to_timestamp (int x) const
 Converts a horizontal pixel offset to a timestamp.
void set_horizontal_scale (double time_width)
 Changes the amount of time the width of the horizontal axis represents.
int timestamp_to_pixel (double time) const
 Converts a timestamp to a horizontal pixel offset.
void update ()
 Updates the chart with the latest data.

Protected Member Functions

virtual void begin_draw ()
 Should be overridden by the user class.
virtual void begin_row (int row)
 Should be overridden by the user class.
void changed_size (int xsize, int ysize)
 To be called by the user class when the widget size has changed.
virtual void draw_bar (int row, int from_x, int to_x)
 Draws a single bar in the chart for the indicated row, in the color get_row_color(row), for the indicated horizontal pixel range.
virtual void end_draw ()
 Should be overridden by the user class.
virtual void end_row (int row)
 Should be overridden by the user class.
void force_redraw ()
 To be called by the user class when the whole thing needs to be redrawn for some reason.
virtual void idle ()
 Should be overridden by the user class to perform any other updates might be necessary after the bars have been redrawn.
virtual void normal_guide_bars ()
 Calls update_guide_bars with parameters suitable to this kind of graph.

Protected Attributes

int _thread_index

Detailed Description

This is an abstract class that presents the interface for drawing a piano-roll type chart: it shows the time spent in each of a number of collectors as a horizontal bar of color, with time as the horizontal axis.

This class just manages all the piano-roll logic; the actual nuts and bolts of drawing pixels is left to a user-derived class.

Definition at line 43 of file pStatPianoRoll.h.


Member Function Documentation

void PStatPianoRoll::begin_draw ( ) [protected, virtual]

Should be overridden by the user class.

This hook will be called before drawing any bars in the chart.

Reimplemented in GtkStatsPianoRoll, and WinStatsPianoRoll.

Definition at line 212 of file pStatPianoRoll.cxx.

Referenced by force_redraw().

void PStatPianoRoll::begin_row ( int  row) [protected, virtual]

Should be overridden by the user class.

This hook will be called before drawing any one row of bars. These bars correspond to the collector whose index is get_row_collector(row), and in the color get_row_color(row).

Definition at line 225 of file pStatPianoRoll.cxx.

Referenced by force_redraw().

void PStatPianoRoll::changed_size ( int  xsize,
int  ysize 
) [protected]

To be called by the user class when the widget size has changed.

This updates the chart's internal data and causes it to issue redraw commands to reflect the new size.

Definition at line 157 of file pStatPianoRoll.cxx.

References force_redraw(), and normal_guide_bars().

Referenced by WinStatsPianoRoll::changed_graph_size(), and GtkStatsPianoRoll::changed_graph_size().

void PStatPianoRoll::draw_bar ( int  row,
int  from_x,
int  to_x 
) [protected, virtual]

Draws a single bar in the chart for the indicated row, in the color get_row_color(row), for the indicated horizontal pixel range.

Reimplemented in GtkStatsPianoRoll, and WinStatsPianoRoll.

Definition at line 236 of file pStatPianoRoll.cxx.

Referenced by force_redraw().

void PStatPianoRoll::end_draw ( ) [protected, virtual]

Should be overridden by the user class.

This hook will be called after drawing a series of color bars in the chart.

Reimplemented in GtkStatsPianoRoll, and WinStatsPianoRoll.

Definition at line 258 of file pStatPianoRoll.cxx.

Referenced by force_redraw().

void PStatPianoRoll::end_row ( int  row) [protected, virtual]

Should be overridden by the user class.

This hook will be called after drawing a series of color bars for a single row.

Definition at line 247 of file pStatPianoRoll.cxx.

Referenced by force_redraw().

void PStatPianoRoll::force_redraw ( ) [protected]

To be called by the user class when the whole thing needs to be redrawn for some reason.

Reimplemented in GtkStatsPianoRoll, and WinStatsPianoRoll.

Definition at line 174 of file pStatPianoRoll.cxx.

References begin_draw(), begin_row(), draw_bar(), end_draw(), end_row(), and timestamp_to_pixel().

Referenced by changed_size(), set_horizontal_scale(), and update().

double PStatPianoRoll::get_horizontal_scale ( ) const [inline]

Returns the amount of total time the width of the horizontal axis represents.

Definition at line 37 of file pStatPianoRoll.I.

int PStatPianoRoll::height_to_pixel ( double  value) const [inline]

Converts a value (i.e.

a "height" in the strip chart) to a horizontal pixel offset.

Definition at line 68 of file pStatPianoRoll.I.

void PStatPianoRoll::idle ( ) [protected, virtual]

Should be overridden by the user class to perform any other updates might be necessary after the bars have been redrawn.

Reimplemented in GtkStatsPianoRoll, and WinStatsPianoRoll.

Definition at line 269 of file pStatPianoRoll.cxx.

Referenced by update().

void PStatPianoRoll::normal_guide_bars ( ) [protected, virtual]

Calls update_guide_bars with parameters suitable to this kind of graph.

Implements PStatGraph.

Definition at line 200 of file pStatPianoRoll.cxx.

References PStatGraph::get_xsize(), and PStatGraph::update_guide_bars().

Referenced by changed_size(), and set_horizontal_scale().

double PStatPianoRoll::pixel_to_height ( int  y) const [inline]

Converts a horizontal pixel offset to a value (a "height" in the strip chart).

Definition at line 79 of file pStatPianoRoll.I.

double PStatPianoRoll::pixel_to_timestamp ( int  x) const [inline]

Converts a horizontal pixel offset to a timestamp.

Definition at line 57 of file pStatPianoRoll.I.

void PStatPianoRoll::set_horizontal_scale ( double  time_width) [inline]

Changes the amount of time the width of the horizontal axis represents.

This may force a redraw.

Reimplemented in GtkStatsPianoRoll, and WinStatsPianoRoll.

Definition at line 22 of file pStatPianoRoll.I.

References force_redraw(), and normal_guide_bars().

Referenced by WinStatsPianoRoll::set_horizontal_scale(), and GtkStatsPianoRoll::set_horizontal_scale().

int PStatPianoRoll::timestamp_to_pixel ( double  time) const [inline]

Converts a timestamp to a horizontal pixel offset.

Definition at line 47 of file pStatPianoRoll.I.

Referenced by force_redraw().

void PStatPianoRoll::update ( )

The documentation for this class was generated from the following files:
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