240 lines
7.1 KiB
C++
240 lines
7.1 KiB
C++
/*****************************************************************
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KWin - the KDE window manager
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This file is part of the KDE project.
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Copyright (C) 2006 Lubos Lunak <l.lunak@kde.org>
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You can Freely distribute this program under the GNU General Public
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License. See the file "COPYING" for the exact licensing terms.
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******************************************************************/
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#include "showfps.h"
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#include <config-X11.h>
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#include <kconfig.h>
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#include <ksharedconfig.h>
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#ifdef HAVE_OPENGL
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#include <GL/gl.h>
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#endif
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#ifdef HAVE_XRENDER
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#include <X11/Xlib.h>
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#include <X11/extensions/Xrender.h>
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#endif
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namespace KWin
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{
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KWIN_EFFECT( showfps, ShowFpsEffect )
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const int FPS_WIDTH = 10;
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const int MAX_TIME = 100;
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ShowFpsEffect::ShowFpsEffect()
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: paints_pos( 0 )
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, frames_pos( 0 )
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{
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for( int i = 0;
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i < NUM_PAINTS;
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++i )
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paints[ i ] = 0;
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for( int i = 0;
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i < MAX_FPS;
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++i )
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frames[ i ] = 0;
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KConfigGroup config( KGlobal::config(), "EffectShowFps" );
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alpha = config.readEntry( "Alpha", 0.5 );
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x = config.readEntry( "X", -10000 );
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y = config.readEntry( "Y", 0 );
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if( x == -10000 ) // there's no -0 :(
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x = displayWidth() - NUM_PAINTS - FPS_WIDTH;
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else if ( x < 0 )
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x = displayWidth() - NUM_PAINTS - FPS_WIDTH - x;
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if( y == -10000 )
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y = displayHeight() - MAX_TIME;
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else if ( y < 0 )
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y = displayHeight() - MAX_TIME - y;
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}
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void ShowFpsEffect::prePaintScreen( ScreenPrePaintData& data, int time )
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{
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if( time == 0 ) {
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// TODO optimized away
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}
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t.start();
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frames[ frames_pos ] = t.minute() * 60000 + t.second() * 1000 + t.msec();
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if( ++frames_pos == MAX_FPS )
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frames_pos = 0;
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effects->prePaintScreen( data, time );
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data.paint += QRect( x, y, FPS_WIDTH + NUM_PAINTS, MAX_TIME );
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}
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void ShowFpsEffect::paintScreen( int mask, QRegion region, ScreenPaintData& data )
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{
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effects->paintScreen( mask, region, data );
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int fps = 0;
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for( int i = 0;
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i < MAX_FPS;
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++i )
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if( abs( t.minute() * 60000 + t.second() * 1000 + t.msec() - frames[ i ] ) < 1000 )
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++fps; // count all frames in the last second
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if( fps > MAX_TIME )
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fps = MAX_TIME; // keep it the same height
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#ifdef HAVE_OPENGL
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if( effects->compositingType() == OpenGLCompositing)
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{
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paintGL( fps );
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glFinish(); // make sure all rendering is done
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}
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#endif
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#ifdef HAVE_XRENDER
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if( effects->compositingType() == XRenderCompositing)
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{
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paintXrender( fps );
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XSync( display(), False ); // make sure all rendering is done
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}
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#endif
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}
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void ShowFpsEffect::paintGL( int fps )
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{
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#ifdef HAVE_OPENGL
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int x = this->x;
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int y = this->y;
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glPushAttrib( GL_CURRENT_BIT | GL_ENABLE_BIT );
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glEnable( GL_BLEND );
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glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
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// TODO painting first the background white and then the contents
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// means that the contents also blend with the background, I guess
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glColor4f( 1, 1, 1, alpha ); // white
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glBegin( GL_QUADS );
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glVertex2i( x, y );
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glVertex2i( x + NUM_PAINTS + FPS_WIDTH, y );
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glVertex2i( x + NUM_PAINTS + FPS_WIDTH, y + MAX_TIME );
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glVertex2i( x, y + MAX_TIME );
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glEnd();
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y += MAX_TIME; // paint up from the bottom
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glBegin( GL_QUADS );
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glColor4f( 0, 0, 1, alpha ); // blue
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glVertex2i( x, y );
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glVertex2i( x + FPS_WIDTH, y );
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glVertex2i( x + FPS_WIDTH, y - fps );
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glVertex2i( x, y - fps );
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glEnd();
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glColor4f( 0, 0, 0, alpha ); // black
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glBegin( GL_LINES );
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for( int i = 10;
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i < MAX_TIME;
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i += 10 )
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{
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glVertex2i( x, y - i );
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glVertex2i( x + FPS_WIDTH, y - i );
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}
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glEnd();
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x += FPS_WIDTH;
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glBegin( GL_LINES );
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for( int i = 0;
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i < NUM_PAINTS;
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++i )
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{
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int value = paints[ ( i + paints_pos ) % NUM_PAINTS ];
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if( value > MAX_TIME )
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value = MAX_TIME; // limit
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if( value <= 10 )
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glColor4f( 0, 1, 0, alpha ); // green
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else if( value <= 20 )
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glColor4f( 1, 1, 0, alpha ); // yellow
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else if( value <= 50 )
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glColor4f( 1, 0, 0, alpha ); // red
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else
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glColor4f( 0, 0, 0, alpha ); // black
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glVertex2i( x + NUM_PAINTS - i, y );
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glVertex2i( x + NUM_PAINTS - i, y - value );
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}
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glEnd();
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glPopAttrib();
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#endif
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}
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/*
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Differences between OpenGL and XRender:
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- differently specified rectangles (X: width/height, O: x2,y2)
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- XRender uses pre-multiplied alpha
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*/
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void ShowFpsEffect::paintXrender( int fps )
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{
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#ifdef HAVE_XRENDER
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Pixmap pixmap = XCreatePixmap( display(), rootWindow(), NUM_PAINTS + FPS_WIDTH, MAX_TIME, 32 );
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XRenderPictFormat* format = XRenderFindStandardFormat( display(), PictStandardARGB32 );
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Picture p = XRenderCreatePicture( display(), pixmap, format, 0, NULL );
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XFreePixmap( display(), pixmap );
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XRenderColor col;
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col.alpha = int( alpha * 0xffff );
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col.red = int( alpha * 0xffff ); // white
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col.green = int( alpha * 0xffff );
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col.blue= int( alpha * 0xffff );
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XRenderFillRectangle( display(), PictOpSrc, p, &col, 0, 0, NUM_PAINTS + FPS_WIDTH, MAX_TIME );
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col.red = 0; // blue
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col.green = 0;
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col.blue = int( alpha * 0xffff );
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XRenderFillRectangle( display(), PictOpSrc, p, &col, 0, MAX_TIME - fps, FPS_WIDTH, fps );
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col.red = 0; // black
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col.green = 0;
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col.blue = 0;
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for( int i = 10;
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i < MAX_TIME;
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i += 10 )
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{
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XRenderFillRectangle( display(), PictOpSrc, p, &col, 0, MAX_TIME - i, FPS_WIDTH, 1 );
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}
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for( int i = 0;
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i < NUM_PAINTS;
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++i )
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{
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int value = paints[ ( i + paints_pos ) % NUM_PAINTS ];
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if( value > MAX_TIME )
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value = MAX_TIME; // limit
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if( value <= 10 )
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{ // green
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col.red = 0;
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col.green = int( alpha * 0xffff );
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col.blue = 0;
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}
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else if( value <= 20 )
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{ // yellow
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col.red = int( alpha * 0xffff );
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col.green = int( alpha * 0xffff );
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col.blue = 0;
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}
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else if( value <= 50 )
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{ // red
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col.red = int( alpha * 0xffff );
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col.green = 0;
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col.blue = 0;
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}
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else
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{ // black
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col.red = 0;
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col.green = 0;
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col.blue = 0;
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}
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XRenderFillRectangle( display(), PictOpSrc, p, &col, FPS_WIDTH + NUM_PAINTS - i, MAX_TIME - value, 1, value );
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}
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XRenderComposite( display(), alpha != 1.0 ? PictOpOver : PictOpSrc, p, None,
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effects->xrenderBufferPicture(), 0, 0, 0, 0, x, y, FPS_WIDTH + NUM_PAINTS, MAX_TIME );
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XRenderFreePicture( display(), p );
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#endif
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}
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void ShowFpsEffect::postPaintScreen()
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{
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effects->postPaintScreen();
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paints[ paints_pos ] = t.elapsed();
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if( ++paints_pos == NUM_PAINTS )
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paints_pos = 0;
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effects->addRepaint( x, y, FPS_WIDTH + NUM_PAINTS, MAX_TIME );
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}
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} // namespace
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