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kwin/effects/showfps.cpp

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/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2006 Lubos Lunak <l.lunak@kde.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*********************************************************************/
#include "showfps.h"
#include <kwinconfig.h>
#include <kconfiggroup.h>
#include <kglobal.h>
#include <ksharedconfig.h>
#ifdef KWIN_HAVE_OPENGL_COMPOSITING
#include <GL/gl.h>
#endif
#ifdef KWIN_HAVE_XRENDER_COMPOSITING
#include <X11/Xlib.h>
#include <X11/extensions/Xrender.h>
#endif
#include <kwinxrenderutils.h>
#include <math.h>
#include <QPainter>
namespace KWin
{
KWIN_EFFECT( showfps, ShowFpsEffect )
const int FPS_WIDTH = 10;
const int MAX_TIME = 100;
ShowFpsEffect::ShowFpsEffect()
: paints_pos( 0 )
, frames_pos( 0 )
#ifdef KWIN_HAVE_OPENGL_COMPOSITING
, fpsText(0)
#endif
{
for( int i = 0;
i < NUM_PAINTS;
++i )
{
paints[ i ] = 0;
paint_size[ i ] = 0;
}
for( int i = 0;
i < MAX_FPS;
++i )
frames[ i ] = 0;
reconfigure( ReconfigureAll );
}
void ShowFpsEffect::reconfigure( ReconfigureFlags )
{
KConfigGroup config( KGlobal::config(), "EffectShowFps" );
alpha = config.readEntry( "Alpha", 0.5 );
x = config.readEntry( "X", -10000 );
y = config.readEntry( "Y", 0 );
if( x == -10000 ) // there's no -0 :(
x = displayWidth() - 2*NUM_PAINTS - FPS_WIDTH;
else if ( x < 0 )
x = displayWidth() - 2*NUM_PAINTS - FPS_WIDTH - x;
if( y == -10000 )
y = displayHeight() - MAX_TIME;
else if ( y < 0 )
y = displayHeight() - MAX_TIME - y;
fps_rect = QRect( x, y, FPS_WIDTH + 2*NUM_PAINTS, MAX_TIME );
config = effects->effectConfig("ShowFps");
int textPosition = config.readEntry("TextPosition", int(INSIDE_GRAPH));
textFont = config.readEntry("TextFont", QFont());
textColor = config.readEntry("TextColor", QColor());
double textAlpha = config.readEntry("TextAlpha", 1.0);
if(!textColor.isValid())
textColor = QPalette().color(QPalette::Active, QPalette::WindowText);
textColor.setAlphaF(textAlpha);
switch(textPosition)
{
case TOP_LEFT:
fpsTextRect = QRect(0, 0, 100, 100);
textAlign = Qt::AlignTop|Qt::AlignLeft;
break;
case TOP_RIGHT:
fpsTextRect = QRect(displayWidth()-100, 0, 100, 100);
textAlign = Qt::AlignTop|Qt::AlignRight;
break;
case BOTTOM_LEFT:
fpsTextRect = QRect(0, displayHeight()-100, 100, 100);
textAlign = Qt::AlignBottom|Qt::AlignLeft;
break;
case BOTTOM_RIGHT:
fpsTextRect = QRect(displayWidth()-100, displayHeight()-100, 100, 100);
textAlign = Qt::AlignBottom|Qt::AlignRight;
break;
case NOWHERE:
fpsTextRect = QRect();
break;
case INSIDE_GRAPH:
default:
fpsTextRect = QRect(x, y, FPS_WIDTH + NUM_PAINTS, MAX_TIME);
textAlign = Qt::AlignTop|Qt::AlignRight;
break;
}
}
void ShowFpsEffect::prePaintScreen( ScreenPrePaintData& data, int time )
{
if( time == 0 ) {
// TODO optimized away
}
t.start();
frames[ frames_pos ] = t.minute() * 60000 + t.second() * 1000 + t.msec();
if( ++frames_pos == MAX_FPS )
frames_pos = 0;
effects->prePaintScreen( data, time );
data.paint += fps_rect;
paint_size[ paints_pos ] = 0;
}
void ShowFpsEffect::paintWindow( EffectWindow* w, int mask, QRegion region, WindowPaintData& data )
{
effects->paintWindow( w, mask, region, data );
// Take intersection of region and actual window's rect, minus the fps area
// (since we keep repainting it) and count the pixels.
QRegion r2 = region & QRect( w->x(), w->y(), w->width(), w->height() );
r2 -= fps_rect;
int winsize = 0;
foreach( const QRect& r, r2.rects())
winsize += r.width() * r.height();
paint_size[ paints_pos ] += winsize;
}
void ShowFpsEffect::paintScreen( int mask, QRegion region, ScreenPaintData& data )
{
effects->paintScreen( mask, region, data );
int fps = 0;
for( int i = 0;
i < MAX_FPS;
++i )
if( abs( t.minute() * 60000 + t.second() * 1000 + t.msec() - frames[ i ] ) < 1000 )
++fps; // count all frames in the last second
if( fps > MAX_TIME )
fps = MAX_TIME; // keep it the same height
#ifdef KWIN_HAVE_OPENGL_COMPOSITING
if( effects->compositingType() == OpenGLCompositing)
{
paintGL( fps );
glFinish(); // make sure all rendering is done
}
#endif
#ifdef KWIN_HAVE_XRENDER_COMPOSITING
if( effects->compositingType() == XRenderCompositing)
{
paintXrender( fps );
XSync( display(), False ); // make sure all rendering is done
}
#endif
}
#ifdef KWIN_HAVE_OPENGL_COMPOSITING
void ShowFpsEffect::paintGL( int fps )
{
int x = this->x;
int y = this->y;
glPushAttrib( GL_CURRENT_BIT | GL_ENABLE_BIT );
glEnable( GL_BLEND );
glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
// TODO painting first the background white and then the contents
// means that the contents also blend with the background, I guess
glColor4f( 1, 1, 1, alpha ); // white
glBegin( GL_QUADS );
glVertex2i( x, y );
glVertex2i( x + 2*NUM_PAINTS + FPS_WIDTH, y );
glVertex2i( x + 2*NUM_PAINTS + FPS_WIDTH, y + MAX_TIME );
glVertex2i( x, y + MAX_TIME );
glEnd();
y += MAX_TIME; // paint up from the bottom
glBegin( GL_QUADS );
glColor4f( 0, 0, 1, alpha ); // blue
glVertex2i( x, y );
glVertex2i( x + FPS_WIDTH, y );
glVertex2i( x + FPS_WIDTH, y - fps );
glVertex2i( x, y - fps );
glEnd();
glColor4f( 0, 0, 0, alpha ); // black
glBegin( GL_LINES );
for( int i = 10;
i < MAX_TIME;
i += 10 )
{
glVertex2i( x, y - i );
glVertex2i( x + FPS_WIDTH, y - i );
}
glEnd();
x += FPS_WIDTH;
// Paint FPS graph
paintFPSGraph( x, y );
x += NUM_PAINTS;
// Paint amount of rendered pixels graph
paintDrawSizeGraph( x, y );
// Paint FPS numerical value
paintFPSText(fps);
// Paint paint sizes
glPopAttrib();
}
#endif
#ifdef KWIN_HAVE_XRENDER_COMPOSITING
/*
Differences between OpenGL and XRender:
- differently specified rectangles (X: width/height, O: x2,y2)
- XRender uses pre-multiplied alpha
*/
void ShowFpsEffect::paintXrender( int fps )
{
Pixmap pixmap = XCreatePixmap( display(), rootWindow(), FPS_WIDTH, MAX_TIME, 32 );
XRenderPicture p( pixmap, 32 );
XFreePixmap( display(), pixmap );
XRenderColor col;
col.alpha = int( alpha * 0xffff );
col.red = int( alpha * 0xffff ); // white
col.green = int( alpha * 0xffff );
col.blue= int( alpha * 0xffff );
XRenderFillRectangle( display(), PictOpSrc, p, &col, 0, 0, FPS_WIDTH, MAX_TIME );
col.red = 0; // blue
col.green = 0;
col.blue = int( alpha * 0xffff );
XRenderFillRectangle( display(), PictOpSrc, p, &col, 0, MAX_TIME - fps, FPS_WIDTH, fps );
col.red = 0; // black
col.green = 0;
col.blue = 0;
for( int i = 10;
i < MAX_TIME;
i += 10 )
{
XRenderFillRectangle( display(), PictOpSrc, p, &col, 0, MAX_TIME - i, FPS_WIDTH, 1 );
}
XRenderComposite( display(), alpha != 1.0 ? PictOpOver : PictOpSrc, p, None,
effects->xrenderBufferPicture(), 0, 0, 0, 0, x, y, FPS_WIDTH, MAX_TIME );
// Paint FPS graph
paintFPSGraph( x + FPS_WIDTH, y );
// Paint amount of rendered pixels graph
paintDrawSizeGraph( x + FPS_WIDTH + MAX_TIME, y );
}
#endif
void ShowFpsEffect::paintFPSGraph(int x, int y)
{
// Paint FPS graph
QList<int> lines;
lines << 10 << 20 << 50;
QList<int> values;
for( int i = 0;
i < NUM_PAINTS;
++i )
{
values.append( paints[ ( i + paints_pos ) % NUM_PAINTS ] );
}
paintGraph( x, y, values, lines, true );
}
void ShowFpsEffect::paintDrawSizeGraph(int x, int y)
{
int max_drawsize = 0;
for( int i = 0; i < NUM_PAINTS; i++)
max_drawsize = qMax(max_drawsize, paint_size[ i ] );
// Log of min/max values shown on graph
const float max_pixels_log = 7.2f;
const float min_pixels_log = 2.0f;
const int minh = 5; // Minimum height of the bar when value > 0
float drawscale = (MAX_TIME - minh) / (max_pixels_log - min_pixels_log);
QList<int> drawlines;
for( int logh = (int)min_pixels_log; logh <= max_pixels_log; logh++ )
drawlines.append( (int)(( logh - min_pixels_log ) * drawscale ) + minh );
QList<int> drawvalues;
for( int i = 0;
i < NUM_PAINTS;
++i )
{
int value = paint_size[ ( i + paints_pos ) % NUM_PAINTS ];
int h = 0;
if( value > 0)
{
h = (int)(( log10( (double)value ) - min_pixels_log ) * drawscale );
h = qMin( qMax( 0, h ) + minh, MAX_TIME );
}
drawvalues.append( h );
}
paintGraph( x, y, drawvalues, drawlines, false );
}
void ShowFpsEffect::paintGraph( int x, int y, QList<int> values, QList<int> lines, bool colorize)
{
#ifdef KWIN_HAVE_OPENGL_COMPOSITING
if( effects->compositingType() == OpenGLCompositing)
{
glColor4f( 0, 0, 0, alpha ); // black
glBegin( GL_LINES );
// First draw the lines
foreach( int h, lines)
{
glVertex2i( x, y - h );
glVertex2i( x + values.count(), y - h );
}
// Then the graph values
glColor4f( 0.5, 0.5, 0.5, alpha );
for( int i = 0; i < values.count(); i++ )
{
int value = values[ i ];
if( colorize )
{
if( value <= 10 )
glColor4f( 0, 1, 0, alpha ); // green
else if( value <= 20 )
glColor4f( 1, 1, 0, alpha ); // yellow
else if( value <= 50 )
glColor4f( 1, 0, 0, alpha ); // red
else
glColor4f( 0, 0, 0, alpha ); // black
}
glVertex2i( x + values.count() - i, y );
glVertex2i( x + values.count() - i, y - value );
}
glEnd();
}
#endif
#ifdef KWIN_HAVE_XRENDER_COMPOSITING
if( effects->compositingType() == XRenderCompositing)
{
Pixmap pixmap = XCreatePixmap( display(), rootWindow(), values.count(), MAX_TIME, 32 );
XRenderPicture p( pixmap, 32 );
XFreePixmap( display(), pixmap );
XRenderColor col;
col.alpha = int( alpha * 0xffff );
// Draw background
col.red = col.green = col.blue = int( alpha * 0xffff ); // white
XRenderFillRectangle( display(), PictOpSrc, p, &col, 0, 0, values.count(), MAX_TIME );
// Then the values
col.red = col.green = col.blue = int( alpha * 0x8000 ); // grey
for( int i = 0; i < values.count(); i++ )
{
int value = values[ i ];
if( colorize )
{
if( value <= 10 )
{ // green
col.red = 0;
col.green = int( alpha * 0xffff );
col.blue = 0;
}
else if( value <= 20 )
{ // yellow
col.red = int( alpha * 0xffff );
col.green = int( alpha * 0xffff );
col.blue = 0;
}
else if( value <= 50 )
{ // red
col.red = int( alpha * 0xffff );
col.green = 0;
col.blue = 0;
}
else
{ // black
col.red = 0;
col.green = 0;
col.blue = 0;
}
}
XRenderFillRectangle( display(), PictOpSrc, p, &col,
values.count() - i, MAX_TIME - value, 1, value );
}
// Then the lines
col.red = col.green = col.blue = 0; // black
foreach( int h, lines)
XRenderFillRectangle( display(), PictOpSrc, p, &col, 0, MAX_TIME - h, values.count(), 1 );
// Finally render the pixmap onto screen
XRenderComposite( display(), alpha != 1.0 ? PictOpOver : PictOpSrc, p, None,
effects->xrenderBufferPicture(), 0, 0, 0, 0, x, y, values.count(), MAX_TIME );
}
#endif
}
void ShowFpsEffect::postPaintScreen()
{
effects->postPaintScreen();
paints[ paints_pos ] = t.elapsed();
if( ++paints_pos == NUM_PAINTS )
paints_pos = 0;
effects->addRepaint( fps_rect );
}
void ShowFpsEffect::paintFPSText(int fps)
{
if( !fpsTextRect.isValid())
return;
#ifdef KWIN_HAVE_OPENGL_COMPOSITING
QImage im(100, 100, QImage::Format_ARGB32);
im.fill(Qt::transparent);
QPainter painter(&im);
painter.setFont(textFont);
painter.setPen(textColor);
painter.drawText(QRect(0, 0, 100, 100), textAlign, QString::number(fps));
if(fpsText)
delete fpsText;
fpsText = new GLTexture(im);
fpsText->bind();
fpsText->render(QRegion(fpsTextRect), fpsTextRect);
fpsText->unbind();
effects->addRepaint(fpsTextRect);
#endif
}
} // namespace
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