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processing/core/src/processing/core/PSurfaceNone.java at master · appsou/processing · GitHub
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core
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PSurfaceNone.java
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processing
/
core
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src
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processing
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core
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PSurfaceNone.java
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/* -*- mode: java; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
Part of the Processing project - http://processing.org
Copyright (c) 2015 The Processing Foundation
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation, version 2.1.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General
Public License along with this library; if not, write to the
Free Software Foundation, Inc., 59 Temple Place, Suite 330,
Boston, MA 02111-1307 USA
*/
package
processing
.
core
;
/**
* Surface that's not really visible. Used for PDF and friends, or as a base
* class for other drawing surfaces. It includes the standard rendering loop.
*/
public
class
PSurfaceNone
implements
PSurface
{
protected
PApplet
sketch
;
protected
PGraphics
graphics
;
protected
Thread
thread
;
protected
boolean
paused
;
protected
Object
pauseObject
=
new
Object
();
protected
float
frameRateTarget
=
60
;
protected
long
frameRatePeriod
=
1000000000L
/
60L
;
public
PSurfaceNone
(
PGraphics
graphics
) {
this
.
graphics
=
graphics
;
}
@
Override
public
void
initOffscreen
(
PApplet
sketch
) {
this
.
sketch
=
sketch
;
setSize
(
sketch
.
sketchWidth
(),
sketch
.
sketchHeight
());
}
// public Component initComponent(PApplet sketch) {
// return null;
// }
@
Override
public
void
initFrame
(
PApplet
sketch
) {
/*, int backgroundColor,
int deviceIndex, boolean fullScreen,
boolean spanDisplays) {*/
//this.sketch = sketch;
throw
new
IllegalStateException
(
"initFrame() not available with "
+
getClass
().
getSimpleName
());
}
public
Object
getNative
() {
return
null
;
}
/** Set the window (and dock, or whatever necessary) title. */
@
Override
public
void
setTitle
(
String
title
) {
// You're in a utopian PSurface implementation where titles don't exist.
}
@
Override
public
void
setIcon
(
PImage
image
) {
// I ain't visible, man.
}
/** Show or hide the window. */
@
Override
public
void
setVisible
(
boolean
visible
) {
// I'm always invisible. You can't catch me.
}
/** Set true if we want to resize things (default is not resizable) */
@
Override
public
void
setResizable
(
boolean
resizable
) {
// I don't need size to know my worth.
}
@
Override
public
void
placeWindow
(
int
[]
location
,
int
[]
editorLocation
) { }
@
Override
public
void
placePresent
(
int
stopColor
) { }
@
Override
public
void
setupExternalMessages
() { }
@
Override
public
void
setAlwaysOnTop
(
boolean
always
) { }
//
@
Override
public
void
setLocation
(
int
x
,
int
y
) {
// I'm everywhere, because I'm nowhere.
}
@
Override
public
void
setSize
(
int
wide
,
int
high
) {
if
(
PApplet
.
DEBUG
) {
//System.out.format("frame visible %b, setSize(%d, %d) %n", frame.isVisible(), wide, high);
new
Exception
(
String
.
format
(
"setSize(%d, %d)"
,
wide
,
high
)).
printStackTrace
(
System
.
out
);
}
//if (wide == sketchWidth && high == sketchHeight) { // doesn't work on launch
if
(
wide
==
sketch
.
width
&&
high
==
sketch
.
height
) {
if
(
PApplet
.
DEBUG
) {
new
Exception
(
"w/h unchanged "
+
wide
+
" "
+
high
).
printStackTrace
(
System
.
out
);
}
return
;
// unchanged, don't rebuild everything
}
//throw new RuntimeException("implement me, see readme.md");
sketch
.
width
=
wide
;
sketch
.
height
=
high
;
// set PGraphics variables for width/height/pixelWidth/pixelHeight
graphics
.
setSize
(
wide
,
high
);
}
// public void initImage(PGraphics graphics) {
// // TODO Auto-generated method stub
//
// }
// public Component getComponent() {
// return null;
// }
// public void setSmooth(int level) {
// // TODO Auto-generated method stub
// }
// void requestFocus() {
// }
// public void blit() {
// // TODO Auto-generated method stub
// }
public
void
setCursor
(
int
kind
) { }
public
void
setCursor
(
PImage
image
,
int
hotspotX
,
int
hotspotY
) { }
public
void
showCursor
() { }
public
void
hideCursor
() { }
//
public
Thread
createThread
() {
return
new
AnimationThread
();
}
public
void
startThread
() {
if
(
thread
==
null
) {
thread
=
createThread
();
thread
.
start
();
}
else
{
throw
new
IllegalStateException
(
"Thread already started in "
+
getClass
().
getSimpleName
());
}
}
public
boolean
stopThread
() {
if
(
thread
==
null
) {
return
false
;
}
thread
=
null
;
return
true
;
}
public
boolean
isStopped
() {
return
thread
==
null
|| !
thread
.
isAlive
();
}
// sets a flag to pause the thread when ready
public
void
pauseThread
() {
PApplet
.
debug
(
"PApplet.run() paused, calling object wait..."
);
paused
=
true
;
}
// halts the animation thread if the pause flag is set
protected
void
checkPause
() {
if
(
paused
) {
synchronized
(
pauseObject
) {
try
{
pauseObject
.
wait
();
// PApplet.debug("out of wait");
}
catch
(
InterruptedException
e
) {
// waiting for this interrupt on a start() (resume) call
}
}
}
// PApplet.debug("done with pause");
}
public
void
resumeThread
() {
paused
=
false
;
synchronized
(
pauseObject
) {
pauseObject
.
notifyAll
();
// wake up the animation thread
}
}
public
void
setFrameRate
(
float
fps
) {
frameRateTarget
=
fps
;
frameRatePeriod
= (
long
) (
1000000000.0
/
frameRateTarget
);
//g.setFrameRate(fps);
}
public
class
AnimationThread
extends
Thread
{
public
AnimationThread
() {
super
(
"Animation Thread"
);
}
// broken out so it can be overridden by Danger et al
public
void
callDraw
() {
sketch
.
handleDraw
();
}
/**
* Main method for the primary animation thread.
* <A HREF="http://java.sun.com/products/jfc/tsc/articles/painting/">Painting in AWT and Swing</A>
*/
@
Override
public
void
run
() {
// not good to make this synchronized, locks things up
long
beforeTime
=
System
.
nanoTime
();
long
overSleepTime
=
0L
;
int
noDelays
=
0
;
// Number of frames with a delay of 0 ms before the
// animation thread yields to other running threads.
final
int
NO_DELAYS_PER_YIELD
=
15
;
/*
// If size un-initialized, might be a Canvas. Call setSize() here since
// we now have a parent object that this Canvas can use as a peer.
if (graphics.image == null) {
// System.out.format("it's null, sketchW/H already set to %d %d%n", sketchWidth, sketchHeight);
try {
EventQueue.invokeAndWait(new Runnable() {
public void run() {
setSize(sketchWidth, sketchHeight);
}
});
} catch (InterruptedException ie) {
ie.printStackTrace();
} catch (InvocationTargetException ite) {
ite.printStackTrace();
}
// System.out.format(" but now, sketchW/H changed to %d %d%n", sketchWidth, sketchHeight);
}
*/
// un-pause the sketch and get rolling
sketch
.
start
();
while
((
Thread
.
currentThread
() ==
thread
) && !
sketch
.
finished
) {
checkPause
();
// Don't resize the renderer from the EDT (i.e. from a ComponentEvent),
// otherwise it may attempt a resize mid-render.
// Dimension currentSize = canvas.getSize();
// if (currentSize.width != sketchWidth || currentSize.height != sketchHeight) {
// System.err.format("need to resize from %s to %d, %d%n", currentSize, sketchWidth, sketchHeight);
// }
// render a single frame
// try {
// EventQueue.invokeAndWait(new Runnable() {
// public void run() {
// System.out.println("calling draw, finished = " + sketch.finished);
//System.out.println("calling draw, looping = " + sketch.looping + ", frameCount = " + sketch.frameCount);
callDraw
();
// EventQueue.invokeLater(new Runnable() {
// public void run() {
// if (sketch.frameCount == 1) {
// requestFocus();
// }
// }
// });
// }
// });
// } catch (InterruptedException ie) {
// ie.printStackTrace();
// } catch (InvocationTargetException ite) {
// ite.getTargetException().printStackTrace();
// }
// wait for update & paint to happen before drawing next frame
// this is necessary since the drawing is sometimes in a
// separate thread, meaning that the next frame will start
// before the update/paint is completed
long
afterTime
=
System
.
nanoTime
();
long
timeDiff
=
afterTime
-
beforeTime
;
//System.out.println("time diff is " + timeDiff);
long
sleepTime
= (
frameRatePeriod
-
timeDiff
) -
overSleepTime
;
if
(
sleepTime
>
0
) {
// some time left in this cycle
try
{
Thread
.
sleep
(
sleepTime
/
1000000L
, (
int
) (
sleepTime
%
1000000L
));
noDelays
=
0
;
// Got some sleep, not delaying anymore
}
catch
(
InterruptedException
ex
) { }
overSleepTime
= (
System
.
nanoTime
() -
afterTime
) -
sleepTime
;
}
else
{
// sleepTime <= 0; the frame took longer than the period
overSleepTime
=
0L
;
noDelays
++;
if
(
noDelays
>
NO_DELAYS_PER_YIELD
) {
Thread
.
yield
();
// give another thread a chance to run
noDelays
=
0
;
}
}
beforeTime
=
System
.
nanoTime
();
}
sketch
.
dispose
();
// call to shutdown libs?
// If the user called the exit() function, the window should close,
// rather than the sketch just halting.
if
(
sketch
.
exitCalled
) {
sketch
.
exitActual
();
}
}
}
}
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