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();
}
private void setImageSpan(SpannableStringBuilder builder, Drawable drawable, int start, int end) {
builder.setSpan(new ImageSpan(drawable), start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
if (spine.isCover()) {
builder.setSpan(new CenterSpan(), start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}
}
/**
* 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 void pageUp() {
this.storedPosition = -1;
if (isAtStart()) {
PageTurnerSpine spine = bookView.getSpine();
if (spine == null || !spine.navigateBack()) {
return;
}
this.clearText();
this.storedPosition = Integer.MAX_VALUE;
this.bookView.loadText();
} else {
this.pageNum = Math.max(pageNum - 1, 0);
updatePosition();
}
}
@Override
public void pageDown() {
this.storedPosition = -1;
if (isAtEnd()) {
PageTurnerSpine spine = bookView.getSpine();
if (spine == null || !spine.navigateForward()) {
return;
}
this.clearText();
this.pageNum = 0;
bookView.loadText();
} else {
this.pageNum = Math.min(pageNum + 1, this.pageOffsets.size() - 1);
updatePosition();
}
}
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);
}
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);
}
}
}
}
private int[] calculateSize(int originalWidth, int originalHeight) {
int[] result = new int[] {originalWidth, originalHeight};
int screenHeight = getHeight() - (verticalMargin * 2);
int screenWidth = getWidth() - (horizontalMargin * 2);
// We scale to screen width for the cover or if the image is too
// wide.
if (originalWidth > screenWidth || originalHeight > screenHeight || spine.isCover()) {
float ratio = (float) originalWidth / (float) originalHeight;
int targetHeight = screenHeight - 1;
int targetWidth = (int) (targetHeight * ratio);
if (targetWidth > screenWidth - 1) {
targetWidth = screenWidth - 1;
targetHeight = (int) (targetWidth * (1 / ratio));
}
LOG.debug(
"Rescaling from "
+ originalWidth
+ "x"
+ originalHeight
+ " to "
+ targetWidth
+ "x"
+ targetHeight);
if (targetWidth > 0 || targetHeight > 0) {
result[0] = targetWidth;
result[1] = targetHeight;
}
}
return result;
}
private void flatten(List<TOCReference> refs, List<TocEntry> entries, int level) {
if (refs == null || refs.isEmpty()) {
return;
}
for (TOCReference ref : refs) {
String title = "";
for (int i = 0; i < level; i++) {
title += "-";
}
title += ref.getTitle();
if (ref.getResource() != null) {
entries.add(new TocEntry(title, spine.resolveTocHref(ref.getCompleteHref())));
}
flatten(ref.getChildren(), entries, level + 1);
}
}