void ChannelViewport::resized()
{
int w = getWidth();
int h = content.getTotalChildHeight() + 5;
if (h > getHeight())
w -= getScrollBarThickness();
content.setSize(w, h);
Viewport::resized();
}
void StaticStreamViewport::resized()
{
int width = 600;
int height = MARGIN*2 + (STREAM_H + STREAM_GAP) * content->streamBoxes.size();
if (height > getHeight())
{
width -= getScrollBarThickness();
}
content->setSize(width, height);
Viewport::resized();
}
//==============================================================================
void Viewport::updateVisibleArea()
{
const int scrollbarWidth = getScrollBarThickness();
const bool canShowAnyBars = getWidth() > scrollbarWidth && getHeight() > scrollbarWidth;
const bool canShowHBar = showHScrollbar && canShowAnyBars;
const bool canShowVBar = showVScrollbar && canShowAnyBars;
bool hBarVisible = false, vBarVisible = false;
Rectangle<int> contentArea;
for (int i = 3; --i >= 0;)
{
hBarVisible = canShowHBar && ! horizontalScrollBar.autoHides();
vBarVisible = canShowVBar && ! verticalScrollBar.autoHides();
contentArea = getLocalBounds();
if (contentComp != nullptr && ! contentArea.contains (contentComp->getBounds()))
{
hBarVisible = canShowHBar && (hBarVisible || contentComp->getX() < 0 || contentComp->getRight() > contentArea.getWidth());
vBarVisible = canShowVBar && (vBarVisible || contentComp->getY() < 0 || contentComp->getBottom() > contentArea.getHeight());
if (vBarVisible)
contentArea.setWidth (getWidth() - scrollbarWidth);
if (hBarVisible)
contentArea.setHeight (getHeight() - scrollbarWidth);
if (! contentArea.contains (contentComp->getBounds()))
{
hBarVisible = canShowHBar && (hBarVisible || contentComp->getRight() > contentArea.getWidth());
vBarVisible = canShowVBar && (vBarVisible || contentComp->getBottom() > contentArea.getHeight());
}
}
if (vBarVisible) contentArea.setWidth (getWidth() - scrollbarWidth);
if (hBarVisible) contentArea.setHeight (getHeight() - scrollbarWidth);
if (contentComp == nullptr)
{
contentHolder.setBounds (contentArea);
break;
}
const Rectangle<int> oldContentBounds (contentComp->getBounds());
contentHolder.setBounds (contentArea);
// If the content has changed its size, that might affect our scrollbars, so go round again and re-caclulate..
if (oldContentBounds == contentComp->getBounds())
break;
}
Rectangle<int> contentBounds;
if (contentComp != nullptr)
contentBounds = contentHolder.getLocalArea (contentComp, contentComp->getLocalBounds());
Point<int> visibleOrigin (-contentBounds.getPosition());
horizontalScrollBar.setBounds (0, contentArea.getHeight(), contentArea.getWidth(), scrollbarWidth);
horizontalScrollBar.setRangeLimits (0.0, contentBounds.getWidth());
horizontalScrollBar.setCurrentRange (visibleOrigin.x, contentArea.getWidth());
horizontalScrollBar.setSingleStepSize (singleStepX);
horizontalScrollBar.cancelPendingUpdate();
if (canShowHBar && ! hBarVisible)
visibleOrigin.setX (0);
verticalScrollBar.setBounds (contentArea.getWidth(), 0, scrollbarWidth, contentArea.getHeight());
verticalScrollBar.setRangeLimits (0.0, contentBounds.getHeight());
verticalScrollBar.setCurrentRange (visibleOrigin.y, contentArea.getHeight());
verticalScrollBar.setSingleStepSize (singleStepY);
verticalScrollBar.cancelPendingUpdate();
if (canShowVBar && ! vBarVisible)
visibleOrigin.setY (0);
// Force the visibility *after* setting the ranges to avoid flicker caused by edge conditions in the numbers.
horizontalScrollBar.setVisible (hBarVisible);
verticalScrollBar.setVisible (vBarVisible);
if (contentComp != nullptr)
{
const Point<int> newContentCompPos (viewportPosToCompPos (visibleOrigin));
if (contentComp->getBounds().getPosition() != newContentCompPos)
{
contentComp->setTopLeftPosition (newContentCompPos); // (this will re-entrantly call updateVisibleArea again)
return;
}
}
const Rectangle<int> visibleArea (visibleOrigin.x, visibleOrigin.y,
jmin (contentBounds.getWidth() - visibleOrigin.x, contentArea.getWidth()),
jmin (contentBounds.getHeight() - visibleOrigin.y, contentArea.getHeight()));
if (lastVisibleArea != visibleArea)
{
lastVisibleArea = visibleArea;
visibleAreaChanged (visibleArea);
}
horizontalScrollBar.handleUpdateNowIfNeeded();
verticalScrollBar.handleUpdateNowIfNeeded();
}
//==============================================================================
void Viewport::updateVisibleArea()
{
const int scrollbarWidth = getScrollBarThickness();
const bool canShowAnyBars = getWidth() > scrollbarWidth && getHeight() > scrollbarWidth;
const bool canShowHBar = showHScrollbar && canShowAnyBars;
const bool canShowVBar = showVScrollbar && canShowAnyBars;
bool hBarVisible = canShowHBar && ! horizontalScrollBar.autoHides();
bool vBarVisible = canShowVBar && ! verticalScrollBar.autoHides();
Rectangle<int> contentArea (getLocalBounds());
if (contentComp != nullptr && ! contentArea.contains (contentComp->getBounds()))
{
hBarVisible = canShowHBar && (hBarVisible || contentComp->getX() < 0 || contentComp->getRight() > contentArea.getWidth());
vBarVisible = canShowVBar && (vBarVisible || contentComp->getY() < 0 || contentComp->getBottom() > contentArea.getHeight());
if (vBarVisible)
contentArea.setWidth (getWidth() - scrollbarWidth);
if (hBarVisible)
contentArea.setHeight (getHeight() - scrollbarWidth);
if (! contentArea.contains (contentComp->getBounds()))
{
hBarVisible = canShowHBar && (hBarVisible || contentComp->getRight() > contentArea.getWidth());
vBarVisible = canShowVBar && (vBarVisible || contentComp->getBottom() > contentArea.getHeight());
}
}
if (vBarVisible)
contentArea.setWidth (getWidth() - scrollbarWidth);
if (hBarVisible)
contentArea.setHeight (getHeight() - scrollbarWidth);
contentHolder.setBounds (contentArea);
Rectangle<int> contentBounds;
if (contentComp != nullptr)
contentBounds = contentHolder.getLocalArea (contentComp, contentComp->getLocalBounds());
Point<int> visibleOrigin (-contentBounds.getPosition());
if (hBarVisible)
{
horizontalScrollBar.setBounds (0, contentArea.getHeight(), contentArea.getWidth(), scrollbarWidth);
horizontalScrollBar.setRangeLimits (0.0, contentBounds.getWidth());
horizontalScrollBar.setCurrentRange (visibleOrigin.getX(), contentArea.getWidth());
horizontalScrollBar.setSingleStepSize (singleStepX);
horizontalScrollBar.cancelPendingUpdate();
}
else if (canShowHBar)
{
visibleOrigin.setX (0);
}
if (vBarVisible)
{
verticalScrollBar.setBounds (contentArea.getWidth(), 0, scrollbarWidth, contentArea.getHeight());
verticalScrollBar.setRangeLimits (0.0, contentBounds.getHeight());
verticalScrollBar.setCurrentRange (visibleOrigin.getY(), contentArea.getHeight());
verticalScrollBar.setSingleStepSize (singleStepY);
verticalScrollBar.cancelPendingUpdate();
}
else if (canShowVBar)
{
visibleOrigin.setY (0);
}
// Force the visibility *after* setting the ranges to avoid flicker caused by edge conditions in the numbers.
horizontalScrollBar.setVisible (hBarVisible);
verticalScrollBar.setVisible (vBarVisible);
setViewPosition (visibleOrigin);
const Rectangle<int> visibleArea (visibleOrigin.getX(), visibleOrigin.getY(),
jmin (contentBounds.getWidth() - visibleOrigin.getX(), contentArea.getWidth()),
jmin (contentBounds.getHeight() - visibleOrigin.getY(), contentArea.getHeight()));
if (lastVisibleArea != visibleArea)
{
lastVisibleArea = visibleArea;
visibleAreaChanged (visibleArea);
}
horizontalScrollBar.handleUpdateNowIfNeeded();
verticalScrollBar.handleUpdateNowIfNeeded();
}
//==============================================================================
void Viewport::updateVisibleRegion()
{
if (contentComp != 0)
{
const int newVX = -contentComp->getX();
const int newVY = -contentComp->getY();
if (newVX == 0 && newVY == 0
&& contentComp->getWidth() <= getWidth()
&& contentComp->getHeight() <= getHeight())
{
horizontalScrollBar->setVisible (false);
verticalScrollBar->setVisible (false);
}
horizontalScrollBar->setRangeLimits (0.0, contentComp->getWidth());
horizontalScrollBar->setCurrentRange (newVX, getMaximumVisibleWidth());
horizontalScrollBar->setSingleStepSize (singleStepX);
if (! (contentComp->getWidth() > 0 && showHScrollbar && getHeight() > getScrollBarThickness()))
horizontalScrollBar->setVisible (false);
verticalScrollBar->setRangeLimits (0.0, contentComp->getHeight());
verticalScrollBar->setCurrentRange (newVY, getMaximumVisibleHeight());
verticalScrollBar->setSingleStepSize (singleStepY);
if (! (contentComp->getHeight() > 0 && showVScrollbar && getWidth() > getScrollBarThickness()))
verticalScrollBar->setVisible (false);
if (verticalScrollBar->isVisible())
{
horizontalScrollBar->setCurrentRange (newVX, getMaximumVisibleWidth());
verticalScrollBar->setCurrentRange (newVY, getMaximumVisibleHeight());
verticalScrollBar
->setBounds (getMaximumVisibleWidth(), 0,
getScrollBarThickness(), getMaximumVisibleHeight());
}
if (horizontalScrollBar->isVisible())
{
horizontalScrollBar->setCurrentRange (newVX, getMaximumVisibleWidth());
horizontalScrollBar
->setBounds (0, getMaximumVisibleHeight(),
getMaximumVisibleWidth(), getScrollBarThickness());
}
contentHolder->setSize (getMaximumVisibleWidth(),
getMaximumVisibleHeight());
const int newVW = jmin (contentComp->getRight(), getMaximumVisibleWidth());
const int newVH = jmin (contentComp->getBottom(), getMaximumVisibleHeight());
if (newVX != lastVX
|| newVY != lastVY
|| newVW != lastVW
|| newVH != lastVH)
{
lastVX = newVX;
lastVY = newVY;
lastVW = newVW;
lastVH = newVH;
visibleAreaChanged (newVX, newVY, newVW, newVH);
for (int i = viewportListeners.size(); --i >= 0;)
{
((ViewportListener*) viewportListeners.getUnchecked (i))
->visibleAreaChanged (this, newVX, newVY, newVW, newVH);
}
}
horizontalScrollBar->handleUpdateNowIfNeeded();
verticalScrollBar->handleUpdateNowIfNeeded();
}
else
{
horizontalScrollBar->setVisible (false);
verticalScrollBar->setVisible (false);
}
}
int Viewport::getMaximumVisibleHeight() const throw()
{
return jmax (0, getHeight() - (horizontalScrollBar->isVisible() ? getScrollBarThickness() : 0));
}
int Viewport::getMaximumVisibleWidth() const throw()
{
return jmax (0, getWidth() - (verticalScrollBar->isVisible() ? getScrollBarThickness() : 0));
}