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PL-10579 Implement desktop Image component

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This commit is contained in:
Daniil Tsarev 2018-04-04 15:50:48 +04:00
parent ca875bc186
commit 30f73ea4c8
1 changed files with 85 additions and 26 deletions
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111
modules/desktop/src/com/haulmont/cuba/desktop/gui/components/DesktopImage.java
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@ -32,11 +32,11 @@ import com.haulmont.cuba.gui.data.impl.WeakItemChangeListener;
import com.haulmont.cuba.gui.data.impl.WeakItemPropertyChangeListener;
import com.haulmont.cuba.gui.export.ByteArrayDataProvider;
import org.jdesktop.swingx.JXImageView;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.awt.*;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.*;
import java.awt.image.BufferedImage;
import java.io.InputStream;
import java.util.Map;
@ -44,6 +44,8 @@ import java.util.function.Supplier;
public class DesktopImage extends DesktopAbstractComponent<JXImageView> implements Image {
private static final Logger log = LoggerFactory.getLogger(DesktopImage.class);
protected static final Map<Class<? extends Resource>, Class<? extends Resource>> resourcesClasses;
static {
@ -75,6 +77,9 @@ public class DesktopImage extends DesktopAbstractComponent<JXImageView> implemen
protected EventRouter eventRouter;
protected MouseListener mouseListener;
protected String alternateText;
protected boolean scalingEnabled = true;
public DesktopImage() {
impl = new JXImageView();
@ -83,11 +88,18 @@ public class DesktopImage extends DesktopAbstractComponent<JXImageView> implemen
impl.setBackgroundPainter((g, object, width, height) ->
g.setBackground(Color.gray));
impl.addComponentListener(new ComponentAdapter() {
@Override
public void componentResized(ComponentEvent e) {
impl.setImage(scaleImage(impl.getImage()));
}
});
resourceUpdateHandler = () -> {
BufferedImage image = this.resource == null ?
null
: ((DesktopAbstractResource) this.resource).getResource();
impl.setImage(scaleImage(image));
java.awt.Image image = this.resource == null
? null
: _getResource(resource);
impl.setImage(image);
};
}
@ -160,11 +172,11 @@ public class DesktopImage extends DesktopAbstractComponent<JXImageView> implemen
this.resource = value;
BufferedImage image = null;
java.awt.Image image = null;
if (value != null && ((DesktopAbstractResource) value).hasSource()) {
image = ((DesktopAbstractResource) value).getResource();
image = _getResource(resource);
}
impl.setImage(scaleImage(image));
impl.setImage(image);
if (value != null) {
((DesktopAbstractResource) value).setResourceUpdatedHandler(resourceUpdateHandler);
@ -198,6 +210,41 @@ public class DesktopImage extends DesktopAbstractComponent<JXImageView> implemen
getFrame().getId());
}
protected java.awt.Image _getResource(Resource resource) {
try {
BufferedImage image = ((DesktopAbstractResource) resource).getResource();
scalingEnabled = true;
return scaleImage(image);
} catch (Exception e) {
scalingEnabled = false;
log.info("An error occurred while loading image", e);
return getErrorMessageImage();
}
}
protected BufferedImage getErrorMessageImage() {
BufferedImage errorImage = new BufferedImage(400, 100, BufferedImage.TYPE_INT_RGB);
Graphics graphics = errorImage.getGraphics();
graphics.setColor(new Color(214, 217, 224));
graphics.fillRect(0, 0, 400, 100);
graphics.setColor(Color.BLACK);
graphics.setFont(new Font("Arial", Font.PLAIN, 12));
if (alternateText == null || alternateText.isEmpty()) {
graphics.drawString("An error occurred while loading image.", 10, 25);
graphics.drawString("Check logs for more information.", 10, 45);
} else {
graphics.drawString(alternateText, 10, 25);
}
graphics.dispose();
return errorImage;
}
@Override
public Datasource getDatasource() {
return datasource;
@ -221,40 +268,52 @@ public class DesktopImage extends DesktopAbstractComponent<JXImageView> implemen
DesktopAbstractResource desktopResource = (DesktopAbstractResource) this.resource;
if (desktopResource != null && desktopResource.hasSource()) {
java.awt.Image scaledImage = scaleImage(desktopResource.getResource());
impl.setImage(scaledImage);
impl.setImage(_getResource(desktopResource));
}
}
protected java.awt.Image scaleImage(BufferedImage image) {
protected java.awt.Image scaleImage(java.awt.Image image) {
if (image == null) {
return null;
}
if (!scalingEnabled) {
return image;
}
float implHeight = impl.getHeight();
float implWidth = impl.getWidth();
if (implHeight <= 0 || implWidth <= 0) {
return image;
}
switch (scaleMode) {
case FILL:
return image.getScaledInstance(Math.round(getWidth()), Math.round(getHeight()), java.awt.Image.SCALE_FAST);
return _scaleImage(image, implHeight, implWidth);
case CONTAIN:
case SCALE_DOWN:
int newH = Math.round(getHeight());
int newW = Math.round(getWidth());
float newH = implHeight;
float newW = implWidth;
float scaleCoef;
if (getHeight() > getWidth()) {
scaleCoef = getWidth() / image.getWidth();
newH = Math.round(image.getHeight() * scaleCoef);
if (implHeight > implWidth) {
scaleCoef = implWidth / image.getWidth(impl);
newH = Math.round(image.getHeight(impl) * scaleCoef);
} else {
scaleCoef = getHeight() / image.getHeight();
newW = Math.round(image.getWidth() * scaleCoef);
scaleCoef = implHeight / image.getHeight(impl);
newW = Math.round(image.getWidth(impl) * scaleCoef);
}
return image.getScaledInstance(newW, newH, java.awt.Image.SCALE_DEFAULT);
return _scaleImage(image, newH, newW);
}
return image;
}
protected java.awt.Image _scaleImage(java.awt.Image image, float newHeight, float newWidth) {
return image.getScaledInstance(Math.round(newWidth), Math.round(newHeight), java.awt.Image.SCALE_SMOOTH);
}
protected EventRouter getEventRouter() {
if (eventRouter == null) {
eventRouter = new EventRouter();
@ -332,12 +391,12 @@ public class DesktopImage extends DesktopAbstractComponent<JXImageView> implemen
@Override
public void setAlternateText(String alternateText) {
impl.setToolTipText(alternateText);
this.alternateText = alternateText;
}
@Override
public String getAlternateText() {
return impl.getToolTipText();
return alternateText;
}
@Override