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Expander: don't scroll to the end if the user modifies the scrollbar position.

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Fixes #11027. This preserves the functionality of scroll-to-end while
allowing the user to interrupt it (and resume it, in the case of
extremely long archives).
This commit is contained in:
Augustin Cavalier 2015-06-01 19:31:05 -04:00
parent 1a5860e2d2
commit 9fb72ec18e
2 changed files with 17 additions and 5 deletions
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20
src/apps/expander/ExpanderWindow.cpp
View File

@ -91,8 +91,8 @@ ExpanderWindow::ExpanderWindow(BRect frame, const entry_ref* ref,
fListingText->SetWordWrap(false);
BFont font = be_fixed_font;
fListingText->SetFontAndColor(&font);
BScrollView* scrollView = new BScrollView("", fListingText,
B_INVALIDATE_AFTER_LAYOUT, true, true);
fScrollView = new BScrollView("", fListingText, B_INVALIDATE_AFTER_LAYOUT,
true, true);
// workaround to let the layout manager estimate
// the width of status view and fix the #5289
@ -127,14 +127,14 @@ ExpanderWindow::ExpanderWindow(BRect frame, const entry_ref* ref,
.End()
.End()
.End()
.Add(scrollView)
.Add(fScrollView)
.SetInsets(spacing, spacing, spacing, spacing)
.End()
.End();
pathLayout->SetExplicitMaxSize(BSize(B_SIZE_UNLIMITED, B_SIZE_UNSET));
size = GetLayout()->View()->PreferredSize();
fSizeLimit = size.Height() - scrollView->PreferredSize().height - spacing;
fSizeLimit = size.Height() - fScrollView->PreferredSize().height - spacing;
ResizeTo(Bounds().Width(), fSizeLimit);
SetSizeLimits(size.Width(), 32767.0f, fSizeLimit, fSizeLimit);
@ -369,6 +369,12 @@ ExpanderWindow::MessageReceived(BMessage* message)
case 'outp':
if (!fExpandingStarted && fListingStarted) {
// Check if the vertical scroll bar is at the end
float max, pos;
fScrollView->ScrollBar(B_VERTICAL)->GetRange(NULL, &max);
pos = fScrollView->ScrollBar(B_VERTICAL)->Value();
bool atEnd = (pos == max);
BString string;
int32 i = 0;
while (message->FindString("output", i++, &string) == B_OK) {
@ -379,7 +385,11 @@ ExpanderWindow::MessageReceived(BMessage* message)
fListingText->Insert(string.String());
}
fListingText->ScrollToSelection();
if (atEnd && fScrollView->ScrollBar(B_VERTICAL)->Value() == pos) {
fScrollView->ScrollBar(B_VERTICAL)->GetRange(NULL, &max);
fScrollView->ScrollBar(B_VERTICAL)->SetValue(max);
}
} else if (fExpandingStarted) {
BString string;
int32 i = 0;

2
src/apps/expander/ExpanderWindow.h
View File

@ -20,6 +20,7 @@
class BCheckBox;
class BMenu;
class BLayout;
class BScrollView;
class BStringView;
class BTextControl;
class BTextView;
@ -80,6 +81,7 @@ private:
BTextControl* fDestText;
BStringView* fStatusView;
BTextView* fListingText;
BScrollView* fScrollView;
ExpanderThread* fListingThread;
bool fListingStarted;