/**
* Takes the Scene and writes an image file according to the constraints defined by the caller.
* This returns a BufferedImage of the Scene even if the file can not be written.
*
* @param visibleAreaOnly Eliminates all zoom features. If true, the exported image will be a
* created from the visible area of the scene.
* @param selectedOnly Create an image including only the objects selected on the scene. Note that
* this feature requires that the scene is an instance of an ObjectScene since it is the
* implementation that allows for object selection.
* @param quality And integer value between 0-100. This is for JPG images only. Parameter is not
* used if an image type other than jpg is selected.
* @param width Directly sets the horizontal dimension of the exported image. This is only used
* when the zoomType is ZoomType.CUSTOM_SIZE
* @param height Directly sets the vertical dimension of the exported image. This is only used
* when the zoomType is ZoomType.CUSTOM_SIZE.
* @param createImageMap If true, the necessary steps are taken to setup the sequential call to
* getSceneImageMapCoordinates.
* @return image The raw image that was written to the file.
* @throws java.io.IOException If for some reason the file cannot be written, an IOExeption will
* be thrown.
*/
public BufferedImage createImage(
ImageType imageType,
ZoomType zoomType,
boolean visibleAreaOnly,
boolean selectedOnly,
int quality,
int width,
int height,
boolean createImageMap)
throws IOException {
double _scale = scene.getZoomFactor();
Rectangle sceneRec = scene.getPreferredBounds();
Rectangle viewRect = scene.getView().getVisibleRect();
BufferedImage bufferedImage;
Graphics2D g;
ArrayList<Widget> hiddenWidgets = new ArrayList<Widget>();
int _imageWidth = sceneRec.width;
int _imageHeight = sceneRec.height;
Set<?> _selectedObjects = null;
if (selectedOnly) {
// in order to use getSelectedObject the scene must be an
// ObjectScene
if (scene instanceof ObjectScene) {
ObjectScene gScene = (ObjectScene) scene;
// hide unselected widget
HashSet<Object> invisible = new HashSet<Object>();
invisible.addAll(gScene.getObjects());
_selectedObjects = gScene.getSelectedObjects();
invisible.removeAll(_selectedObjects);
for (Object o : invisible) {
Widget widget = gScene.findWidget(o);
if (widget != null && widget.isVisible()) {
widget.setVisible(false);
hiddenWidgets.add(widget);
}
}
}
}
if (visibleAreaOnly) {
_imageWidth = viewRect.width;
_imageHeight = viewRect.height;
} else {
switch (zoomType) {
case CUSTOM_SIZE:
_imageWidth = width;
_imageHeight = height;
_scale =
Math.min(
(double) width / (double) sceneRec.width,
(double) height / (double) sceneRec.height);
break;
case FIT_IN_WINDOW:
_scale =
Math.min(
(double) viewRect.width / (double) sceneRec.width,
(double) viewRect.height / (double) sceneRec.height);
_imageWidth = (int) ((double) sceneRec.width * _scale);
_imageHeight = (int) ((double) sceneRec.height * _scale);
break;
case CURRENT_ZOOM_LEVEL:
_imageWidth = (int) (sceneRec.width * scene.getZoomFactor());
_imageHeight = (int) (sceneRec.height * scene.getZoomFactor());
break;
case ACTUAL_SIZE:
_imageWidth = sceneRec.width;
_imageHeight = sceneRec.height;
_scale = 1.0;
break;
}
}
// Note that the field variable are being set to method local variable.
// This
// is for the call to getSceneImageMapCoordinates that will come since
// createImageMap is true.
if (createImageMap) {
this.selectedObjects = _selectedObjects;
this.imageHeight = _imageHeight;
this.imageWidth = _imageWidth;
this.scale = _scale;
}
bufferedImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
g = bufferedImage.createGraphics();
g.translate(0, 0);
g.scale(_scale, _scale);
g.setColor(Color.WHITE);
g.fillRect(0, 0, width, height);
scene.paint(g);
// restore widget visibility
for (Widget w : hiddenWidgets) {
w.setVisible(true);
}
if (file != null) {
FileImageOutputStream fo = new FileImageOutputStream(file);
if (imageType == ImageType.JPG) {
Iterator<?> iter = ImageIO.getImageWritersByFormatName("jpg");
ImageWriter writer = (ImageWriter) iter.next();
ImageWriteParam iwp = writer.getDefaultWriteParam();
iwp.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
if (quality > 100) {
quality = 100;
}
if (quality < 0) {
quality = 0;
}
iwp.setCompressionQuality(quality / 100);
writer.setOutput(fo);
IIOImage image = new IIOImage(bufferedImage, null, null);
writer.write(null, image, iwp);
writer.dispose();
} else {
ImageIO.write(bufferedImage, "" + imageType, fo);
}
fo.flush();
fo.close();
}
return bufferedImage;
}
/**
* Takes the Scene and writes an image file according to the constraints defined by the caller.
* This returns a BufferedImage of the {@link Scene} even if the file can not be written. This
* function creates the image for the entire {@link Scene}.
*
* @param visibleAreaOnly Eliminates all zoom features. If true, the exported image will be a
* created from the visible area of the scene.
* @param selectedOnly Create an image including only the objects selected on the scene. Note that
* this feature requires that the scene is an instance of an ObjectScene since it is the
* implementation that allows for object selection.
* @param quality And integer value between 0-100. This is for JPG images only. Parameter is not
* used if an image type other than jpg is selected.
* @param canvas The {@link WorkareaCanvas} that is to exported.
* @param createImageMap If true, the necessary steps are taken to setup the sequential call to
* getSceneImageMapCoordinates.
* @return image The raw image that was written to the file.
* @throws java.io.IOException If for some reason the file cannot be written, an IOExeption will
* be thrown.
*/
public BufferedImage createImage(
ImageType imageType,
ZoomType zoomType,
boolean visibleAreaOnly,
boolean selectedOnly,
int quality,
WorkareaCanvas canvas,
boolean createImageMap)
throws IOException {
// Creates a rectangle with the starting point and the dimensions of the
// scene seleceted for export
Rectangle rectangle = canvas.getScene().getClientArea();
double _scale = scene.getZoomFactor();
Rectangle sceneRec = scene.getPreferredBounds();
Rectangle viewRect = scene.getView().getVisibleRect();
BufferedImage bufferedImage;
Graphics2D g;
ArrayList<Widget> hiddenWidgets = new ArrayList<Widget>();
int _imageWidth = sceneRec.width;
int _imageHeight = sceneRec.height;
Set<?> _selectedObjects = null;
if (selectedOnly) {
// in order to use getSelectedObject the scene must be an
// ObjectScene
if (scene instanceof ObjectScene) {
ObjectScene gScene = (ObjectScene) scene;
// hide unselected widget
HashSet<Object> invisible = new HashSet<Object>();
invisible.addAll(gScene.getObjects());
_selectedObjects = gScene.getSelectedObjects();
invisible.removeAll(_selectedObjects);
for (Object o : invisible) {
Widget widget = gScene.findWidget(o);
if (widget != null && widget.isVisible()) {
widget.setVisible(false);
hiddenWidgets.add(widget);
}
}
}
}
if (visibleAreaOnly) {
_imageWidth = viewRect.width;
_imageHeight = viewRect.height;
} else {
switch (zoomType) {
case CUSTOM_SIZE:
_imageWidth = rectangle.width;
_imageHeight = rectangle.height;
_scale =
Math.min(
(double) rectangle.width / (double) sceneRec.width,
(double) rectangle.height / (double) sceneRec.height);
break;
case FIT_IN_WINDOW:
_scale =
Math.min(
(double) viewRect.width / (double) sceneRec.width,
(double) viewRect.height / (double) sceneRec.height);
_imageWidth = (int) ((double) sceneRec.width * _scale);
_imageHeight = (int) ((double) sceneRec.height * _scale);
break;
case CURRENT_ZOOM_LEVEL:
_imageWidth = (int) (sceneRec.width * scene.getZoomFactor());
_imageHeight = (int) (sceneRec.height * scene.getZoomFactor());
break;
case ACTUAL_SIZE:
_imageWidth = sceneRec.width;
_imageHeight = sceneRec.height;
_scale = 1.0;
break;
}
}
// Note that the field variable are being set to method local variable.
// This
// is for the call to getSceneImageMapCoordinates that will come since
// createImageMap is true.
if (createImageMap) {
this.selectedObjects = _selectedObjects;
this.imageHeight = _imageHeight;
this.imageWidth = _imageWidth;
this.scale = _scale;
}
bufferedImage =
new BufferedImage(rectangle.width, rectangle.height, BufferedImage.TYPE_INT_RGB);
g = bufferedImage.createGraphics();
g.setRenderingHint(
RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
g.scale(_scale, _scale);
g.setColor(Color.WHITE);
g.fillRect(rectangle.x, rectangle.y, rectangle.width, rectangle.height);
scene.paint(g);
// restore widget visibility
for (Widget w : hiddenWidgets) {
w.setVisible(true);
}
if (file != null) {
boolean save = true;
if (file.exists()) {
int answer =
JOptionPane.showConfirmDialog(
null,
"This file exists. Do you wish to overwrite the file?",
"Confirm",
JOptionPane.YES_NO_OPTION);
// The user has not pressed YES
if (answer != 0) {
save = false;
}
}
if (save) {
FileImageOutputStream fo = new FileImageOutputStream(file);
if (imageType == ImageType.JPG) {
Iterator<?> iter = ImageIO.getImageWritersByFormatName("jpg");
ImageWriter writer = (ImageWriter) iter.next();
ImageWriteParam iwp = writer.getDefaultWriteParam();
iwp.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
if (quality > 100) {
quality = 100;
}
if (quality < 0) {
quality = 0;
}
iwp.setCompressionQuality(quality / 100);
writer.setOutput(fo);
IIOImage image = new IIOImage(bufferedImage, null, null);
writer.write(null, image, iwp);
writer.dispose();
} else {
ImageIO.write(bufferedImage, "" + imageType, fo);
}
fo.flush();
fo.close();
}
}
return bufferedImage;
}