@Test
public void testRenderScrollBarsVisibleUnchanged() throws IOException {
Fixture.markInitialized(display);
Fixture.markInitialized(sc);
Fixture.markInitialized(hScroll);
Fixture.markInitialized(vScroll);
hScroll.setVisible(false);
vScroll.setVisible(false);
Fixture.preserveWidgets();
lca.renderChanges(sc);
TestMessage message = Fixture.getProtocolMessage();
assertNull(message.findSetOperation(hScroll, "visibility"));
assertNull(message.findSetOperation(vScroll, "visibility"));
}
@Test
public void testRenderScrollBarsVisible_Vertical() throws IOException {
vScroll.setVisible(true);
lca.renderChanges(sc);
TestMessage message = Fixture.getProtocolMessage();
assertNull(message.findSetOperation(hScroll, "visibility"));
assertEquals(JsonValue.TRUE, message.findSetProperty(vScroll, "visibility"));
}
private void resizeScrollBar() {
int imageWidth = patchedBothImage.getImageData().width + 50;
int imageHeight =
patchedBothImage.getImageData().height
+ patchedHeightImage.getImageData().height
+ patchedWidthImage.getImageData().height
+ 50;
Rectangle rect = canvas.getBounds();
if (backgroundImage != null && !backgroundImage.isDisposed()) {
backgroundImage.dispose();
}
if (rect.width < imageWidth && rect.height < imageHeight) {
backgroundImage = createTransparentBackground(imageWidth, imageHeight);
vBar.setVisible(true);
hBar.setVisible(true);
} else if (rect.width < imageWidth && rect.height > imageHeight) {
backgroundImage = createTransparentBackground(imageWidth, rect.height);
vBar.setVisible(false);
hBar.setVisible(true);
} else if (rect.width > imageWidth && rect.height < imageHeight) {
backgroundImage = createTransparentBackground(rect.width, imageHeight);
vBar.setVisible(true);
hBar.setVisible(false);
}
if (backgroundImage.isDisposed()) {
backgroundImage = createTransparentBackground(rect.width, rect.height);
vBar.setVisible(false);
hBar.setVisible(false);
}
hBar.setMaximum(imageWidth);
vBar.setMaximum(imageHeight);
hBar.setThumb(Math.min(imageWidth, rect.width));
vBar.setThumb(Math.min(imageHeight, rect.height));
int hPage = imageWidth - rect.width;
int vPage = imageHeight - rect.height;
int hSelection = hBar.getSelection();
int vSelection = vBar.getSelection();
if (hSelection >= hPage) {
if (hPage <= 0) {
hSelection = 0;
}
origin.x = -hSelection;
}
if (vSelection >= vPage) {
if (vPage <= 0) {
vSelection = 0;
}
origin.y = -vSelection;
}
}
private void updateScrollBars() {
ScrollBar hBar = getHorizontalBar();
ScrollBar vBar = getVerticalBar();
if (image == null || image.isDisposed()) {
hBar.setVisible(false);
vBar.setVisible(false);
return;
}
// 표시해야할 이미지의 크기
Rectangle imageBounds = image != null ? image.getBounds() : new Rectangle(0, 0, 0, 0);
// 표시에 사용할 수 있는 클라이언트 영역
Rectangle clientArea = getClientArea();
// 스크롤바 표시 여부 계산, 표시해야할 그림이 클라이언트 영역보다 넓으면 표시
hBar.setVisible(imageBounds.width > clientArea.width);
vBar.setVisible(imageBounds.height > clientArea.height);
hBar.setMaximum(imageBounds.width);
vBar.setMaximum(imageBounds.height);
clientArea = getClientArea();
// 현재 표시중인 영역이 표시해야할 전체 영역에 대한 비율을 계산
double hRatio = clientArea.width / (double) imageBounds.width;
double vRatio = clientArea.height / (double) imageBounds.height;
// 스크롤바의 썸 크기 업데이트
hBar.setThumb((int) (hRatio * imageBounds.width));
vBar.setThumb((int) (vRatio * imageBounds.height));
// 스크롤바 빈영역 클릭시 10% 정도씩 이동하도록 지정
hBar.setPageIncrement((int) (imageBounds.width * 0.1));
vBar.setPageIncrement((int) (imageBounds.height * 0.1));
}
/** This only works on linux */
private void syncTreeTableScrollBars() {
final ScrollBar treeBar = treeComposite.getTree().getHorizontalBar();
final ScrollBar totalBar = totalComposite.getTable().getHorizontalBar();
treeBar.setVisible(false);
treeBar.addSelectionListener(
new SelectionListener() {
@Override
public void widgetDefaultSelected(SelectionEvent e) {
scrollTable();
}
@Override
public void widgetSelected(SelectionEvent e) {
scrollTable();
}
private void scrollTable() {
int selection = treeBar.getSelection();
totalBar.setSelection(selection);
}
});
totalBar.addSelectionListener(
new SelectionListener() {
@Override
public void widgetDefaultSelected(SelectionEvent e) {
scrollTree();
}
@Override
public void widgetSelected(SelectionEvent e) {
scrollTree();
}
private void scrollTree() {
int selection = totalBar.getSelection();
treeBar.setSelection(selection);
}
});
}
protected void layout(Composite composite, boolean flushCache) {
if (inLayout) {
return;
}
ScrolledComposite sc = (ScrolledComposite) composite;
if (sc.content == null) {
return;
}
ScrollBar hBar = sc.getHorizontalBar();
ScrollBar vBar = sc.getVerticalBar();
if (hBar != null) {
if (hBar.getSize().y >= sc.getSize().y) {
return;
}
}
if (vBar != null) {
if (vBar.getSize().x >= sc.getSize().x) {
return;
}
}
inLayout = true;
Rectangle contentRect = sc.content.getBounds();
if (!sc.alwaysShowScroll) {
boolean hVisible = sc.needHScroll(contentRect, false);
boolean vVisible = sc.needVScroll(contentRect, hVisible);
if (!hVisible && vVisible) {
hVisible = sc.needHScroll(contentRect, vVisible);
}
if (hBar != null) {
hBar.setVisible(hVisible);
}
if (vBar != null) {
vBar.setVisible(vVisible);
}
}
Rectangle hostRect = sc.getClientArea();
if (sc.expandHorizontal) {
contentRect.width = Math.max(sc.minWidth, hostRect.width);
}
if (sc.expandVertical) {
contentRect.height = Math.max(sc.minHeight, hostRect.height);
}
if (hBar != null) {
hBar.setMaximum(contentRect.width);
hBar.setThumb(Math.min(contentRect.width, hostRect.width));
int hPage = contentRect.width - hostRect.width;
int hSelection = hBar.getSelection();
if (hSelection >= hPage) {
if (hPage <= 0) {
hSelection = 0;
hBar.setSelection(0);
}
contentRect.x = -hSelection;
}
}
if (vBar != null) {
vBar.setMaximum(contentRect.height);
vBar.setThumb(Math.min(contentRect.height, hostRect.height));
int vPage = contentRect.height - hostRect.height;
int vSelection = vBar.getSelection();
if (vSelection >= vPage) {
if (vPage <= 0) {
vSelection = 0;
vBar.setSelection(0);
}
contentRect.y = -vSelection;
}
}
sc.content.setBounds(contentRect);
inLayout = false;
}
