antville/helma
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More tweaking of the image loading and generating process.

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This commit is contained in:
hns 2003-02-03 16:59:24 +00:00
parent 2c1fdf3d0f
commit e2c6d1903b
1 changed files with 65 additions and 54 deletions
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59
src/helma/image/ImageGenerator.java
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@ -9,8 +9,8 @@ import java.net.URL;
import java.net.MalformedURLException;
/**
* This creates an invisible frame in order to be able to create images
* from Java. (Java needs a window context in order to user the Image class).
* Factory class for generating Image objects from various sources.
*
*/
public class ImageGenerator {
@ -30,14 +30,17 @@ public class ImageGenerator {
ImageWrapper rimg = null;
Image img1 = Toolkit.getDefaultToolkit ().createImage (src);
ImageLoader loader = new ImageLoader (img1);
try {
loader.getDimensions ();
int w = loader.getWidth ();
int h = loader.getHeight ();
Image img = new BufferedImage (w, h, BufferedImage.TYPE_INT_RGB);
Graphics g = img.getGraphics ();
if (!g.drawImage (img1, 0, 0, loader))
loader.getBits ();
g.drawImage (img1, 0, 0, null);
rimg = new SunImageWrapper (img, g, w, h, this);
} finally {
loader.done();
}
return rimg;
}
@ -45,10 +48,14 @@ public class ImageGenerator {
ImageWrapper rimg = null;
Image img = Toolkit.getDefaultToolkit ().createImage (src);
ImageLoader loader = new ImageLoader (img);
try {
loader.getDimensions ();
int w = loader.getWidth ();
int h = loader.getHeight ();
rimg = new SunImageWrapper (img, null, w, h, this);
} finally {
loader.done();
}
return rimg;
}
@ -58,14 +65,17 @@ public class ImageGenerator {
URL url = new URL (urlstring);
Image img1 = Toolkit.getDefaultToolkit ().createImage (url);
ImageLoader loader = new ImageLoader (img1);
try {
loader.getDimensions ();
int w = loader.getWidth ();
int h = loader.getHeight ();
Image img = new BufferedImage (w, h, BufferedImage.TYPE_INT_RGB);
Graphics g = img.getGraphics ();
if(!g.drawImage (img1, 0, 0, loader))
loader.getBits ();
g.drawImage (img1, 0, 0, null);
rimg = new SunImageWrapper (img, g, w, h, this);
} finally {
loader.done();
}
return rimg;
}
@ -74,14 +84,17 @@ public class ImageGenerator {
FilteredImageSource fis = new FilteredImageSource (iw.getSource(), filter);
Image img1 = Toolkit.getDefaultToolkit().createImage (fis);
ImageLoader loader = new ImageLoader (img1);
try {
loader.getDimensions ();
int w = loader.getWidth ();
int h = loader.getHeight ();
Image img = new BufferedImage (w, h, BufferedImage.TYPE_INT_RGB);
Graphics g = img.getGraphics ();
if (!g.drawImage (img1, 0, 0, loader))
loader.getBits ();
g.drawImage (img1, 0, 0, null);
rimg = new SunImageWrapper (img, g, w, h, this);
} finally {
loader.done();
}
return rimg;
}
@ -91,6 +104,7 @@ public class ImageGenerator {
img = Toolkit.getDefaultToolkit ().createImage (filename);
ImageLoader loader = new ImageLoader (img);
loader.getDimensions ();
loader.done();
return img;
}
@ -99,6 +113,7 @@ public class ImageGenerator {
img = Toolkit.getDefaultToolkit ().createImage (producer);
ImageLoader loader = new ImageLoader (img);
loader.getDimensions ();
loader.done();
return img;
}
@ -118,7 +133,8 @@ public class ImageGenerator {
synchronized void getDimensions () {
w = img.getWidth(this);
h = img.getHeight (this);
if (w == -1 || h == -1) try {
if (w == -1 || h == -1) {
try {
wait (45000);
} catch (InterruptedException x) {
waiting = false;
@ -126,21 +142,16 @@ public class ImageGenerator {
} finally {
waiting = false;
}
}
// if width and height haven't been set, throw tantrum
if (w == -1 || h == -1) {
throw new RuntimeException ("Error loading image");
}
}
synchronized void getBits () {
if (!firstFrameLoaded) try {
wait (45000);
} catch (InterruptedException x) {
synchronized void done () {
waiting = false;
return;
} finally {
waiting = false;
}
notifyAll ();
}
int getWidth () {
@ -157,12 +168,18 @@ public class ImageGenerator {
int y,
int width,
int height) {
// check if there was an error
if (!waiting || (infoflags & ERROR) > 0 || (infoflags & ABORT) > 0) {
// we either timed out or there was an error.
notifyAll ();
return false;
}
if ((infoflags & WIDTH) > 0 || (infoflags & HEIGHT) > 0) {
if ((infoflags & WIDTH) > 0)
w = width;
if ((infoflags & HEIGHT) > 0)
h = height;
if (w > -1 && h > -1) {
if (w > -1 && h > -1 && firstFrameLoaded) {
notifyAll ();
return false;
}
@ -172,12 +189,6 @@ public class ImageGenerator {
notifyAll ();
return false;
}
// check if there was an error
if (!waiting || (infoflags & ERROR) > 0 || (infoflags & ABORT) > 0) {
// we either timed out or there was an error.
notifyAll ();
return false;
}
return true;
}