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Get rid of BufferView::scrollUp/Down

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LFUN_SCROLL was the last user, change it to use only scroll(). Take
this opportunity to improve a bit this dispatch code.

Also improve somewhat the methods documentation.
This commit is contained in:
Jean-Marc Lasgouttes 2024-09-03 18:13:02 +02:00
parent f52842d289
commit 439b7bb9c9
2 changed files with 23 additions and 31 deletions
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40
src/BufferView.cpp
View File

@ -2168,18 +2168,24 @@ void BufferView::dispatch(FuncRequest const & cmd, DispatchResult & dr)
scroll_step = d->scrollbarParameters_.single_step; scroll_step = d->scrollbarParameters_.single_step;
else if (scroll_type == "page") else if (scroll_type == "page")
scroll_step = d->scrollbarParameters_.page_step; scroll_step = d->scrollbarParameters_.page_step;
else
return;
string const scroll_quantity = cmd.getArg(1);
if (scroll_quantity == "up")
scrollUp(scroll_step);
else if (scroll_quantity == "down")
scrollDown(scroll_step);
else { else {
int const scroll_value = convert<int>(scroll_quantity); dispatched = false;
if (scroll_value) return;
scroll(scroll_step * scroll_value);
} }
string const scroll_quantity = cmd.getArg(1);
if (scroll_quantity == "up")
scroll(-scroll_step);
else if (scroll_quantity == "down")
scroll(scroll_step);
else if (isStrInt(scroll_quantity))
scroll(scroll_step * convert<int>(scroll_quantity));
else {
dispatched = false;
return;
}
dr.screenUpdate(Update::ForceDraw); dr.screenUpdate(Update::ForceDraw);
dr.forceBufferUpdate(); dr.forceBufferUpdate();
break; break;
@ -2859,20 +2865,6 @@ int BufferView::scroll(int pixels)
} }
int BufferView::scrollDown(int pixels)
{
d->anchor_ypos_ -= pixels;
return -pixels;
}
int BufferView::scrollUp(int pixels)
{
d->anchor_ypos_ += pixels;
return pixels;
}
bool BufferView::setCursorFromRow(int row) bool BufferView::setCursorFromRow(int row)
{ {
TexRow::TextEntry start, end; TexRow::TextEntry start, end;

14
src/BufferView.h
View File

@ -218,17 +218,17 @@ public:
/// Ensure the passed cursor \p dit is visible. /// Ensure the passed cursor \p dit is visible.
/// This method will automatically scroll and update the BufferView /// This method will automatically scroll and update the BufferView
/// (metrics+drawing) if needed. /// (metrics+drawing) if needed.
/// \param how Use this scroll strategy /// \param how: where the cursor should appear (visible/top/center)
void showCursor(DocIterator const & dit, ScrollType how); void showCursor(DocIterator const & dit, ScrollType how);
/// Scroll to the cursor. /// Scroll to the cursor.
/// \param how Use this scroll strategy /// This only updates the anchor vertical position, but does not
/// recompute metrics nor trigger a screen refresh.
/// \param how: where the cursor should appear (visible/top/center)
/// \return true if screen was scrolled /// \return true if screen was scrolled
bool scrollToCursor(DocIterator const & dit, ScrollType how); bool scrollToCursor(DocIterator const & dit, ScrollType how);
/// scroll down document by the given number of pixels. /// scroll the view by the given number of pixels. This only
int scrollDown(int pixels); /// updates the anchor vertical position, but does not recompute
/// scroll up document by the given number of pixels. /// metrics nor trigger a screen refresh.
int scrollUp(int pixels);
/// scroll document by the given number of pixels.
int scroll(int pixels); int scroll(int pixels);
/// Scroll the view by a number of pixels. /// Scroll the view by a number of pixels.
void scrollDocView(int pixels); void scrollDocView(int pixels);