private void progressUpdate() {
if (this.spine != null
&& this.strategy.getText() != null
&& this.strategy.getText().length() > 0) {
double progressInPart =
(double) this.getPosition() / (double) this.strategy.getText().length();
if (strategy.getText().length() > 0 && strategy.isAtEnd()) {
progressInPart = 1d;
}
int progress = spine.getProgressPercentage(progressInPart);
if (progress != -1) {
int pageNumber = spine.getPageNumberFor(getIndex(), getPosition());
for (BookViewListener listener : this.listeners) {
listener.progressUpdate(progress, pageNumber, spine.getTotalNumberOfPages());
}
}
}
}
public boolean isAtEnd() {
if (spine == null) {
return false;
}
return spine.getPosition() >= spine.size() - 1 && strategy.isAtEnd();
}
/**
* Returns if we're at the start of the book, i.e. displaying the title page.
*
* @return
*/
public boolean isAtStart() {
if (spine == null) {
return true;
}
return spine.getPosition() == 0 && strategy.isAtStart();
}
@Override
public boolean onTouchEvent(MotionEvent ev) {
if (strategy.isScrolling()) {
return super.onTouchEvent(ev);
} else {
return childView.onTouchEvent(ev);
}
}
/**
* Scrolls to a previously stored point.
*
* <p>Call this after setPosition() to actually go there.
*/
private void restorePosition() {
if (this.storedAnchor != null && this.anchors.containsKey(storedAnchor)) {
strategy.setPosition(anchors.get(storedAnchor));
this.storedAnchor = null;
}
this.strategy.updatePosition();
}
public void setVerticalMargin(int verticalMargin) {
if (verticalMargin != this.verticalMargin) {
this.verticalMargin = verticalMargin;
setPadding(
this.horizontalMargin, this.verticalMargin, this.horizontalMargin, this.verticalMargin);
if (strategy != null) {
strategy.updatePosition();
}
}
}
public void setLineSpacing(int lineSpacing) {
if (lineSpacing != this.lineSpacing) {
this.lineSpacing = lineSpacing;
this.childView.setLineSpacing(lineSpacing, 1);
if (strategy != null) {
strategy.updatePosition();
}
}
}
public void goBackInHistory() {
this.strategy.clearText();
this.spine.navigateByIndex(this.prevIndex);
strategy.setPosition(this.prevPos);
this.storedAnchor = null;
this.prevIndex = -1;
this.prevPos = -1;
loadText();
}
private void progressUpdate() {
if (this.spine != null
&& this.strategy.getText() != null
&& this.strategy.getText().length() > 0) {
double progressInPart =
(double) this.getPosition() / (double) this.strategy.getText().length();
if (strategy.getText().length() > 0 && strategy.isAtEnd()) {
progressInPart = 1d;
}
int progress = spine.getProgressPercentage(progressInPart);
if (progress != -1) {
for (BookViewListener listener : this.listeners) {
listener.progressUpdate(progress);
}
}
}
}
public void goBackInHistory() {
if (this.prevIndex == this.getIndex()) {
strategy.setPosition(prevPos);
this.storedAnchor = null;
this.prevIndex = -1;
this.prevPos = -1;
restorePosition();
} else {
this.strategy.clearText();
this.spine.navigateByIndex(this.prevIndex);
strategy.setPosition(this.prevPos);
this.storedAnchor = null;
this.prevIndex = -1;
this.prevPos = -1;
loadText();
}
}
private List<Integer> getOffsetsForResource(int spineIndex) throws IOException {
HtmlSpanner mySpanner = new HtmlSpanner();
mySpanner.registerHandler("table", tableHandler);
mySpanner.registerHandler("img", new ImageTagHandler(true));
mySpanner.registerHandler("image", new ImageTagHandler(true));
CharSequence text;
if (spineIndex == getIndex()) {
text = strategy.getText();
} else {
Resource res = spine.getResourceForIndex(spineIndex);
text = mySpanner.fromHtml(res.getReader());
loader.load();
}
return FixedPagesStrategy.getPageOffsets(this, text, true);
}
public int getPosition() {
return strategy.getPosition();
}
@Override
public void fling(int velocityY) {
strategy.clearStoredPosition();
super.fling(velocityY);
}
public void pageUp() {
strategy.pageUp();
progressUpdate();
}
/** Loads the text and saves the restored position. */
public void restore() {
strategy.clearText();
loadText();
}
public void pageDown() {
strategy.pageDown();
}
public void pageUp() {
strategy.pageUp();
}
