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-rw-r--r--indra/llui/lltextbase.cpp136
1 files changed, 82 insertions, 54 deletions
diff --git a/indra/llui/lltextbase.cpp b/indra/llui/lltextbase.cpp
index 78a6ab1eaa..616033f77f 100644
--- a/indra/llui/lltextbase.cpp
+++ b/indra/llui/lltextbase.cpp
@@ -962,18 +962,19 @@ void LLTextBase::reshape(S32 width, S32 height, BOOL called_from_parent)
{
if (width != getRect().getWidth() || height != getRect().getHeight())
{
- //EXT-4288
- //to keep consistance scrolling behaviour
- //when scrolling from top and from bottom...
- bool is_scrolled_to_end = (mScroller!=NULL) && scrolledToEnd();
-
+ bool scrolled_to_bottom = mScroller ? mScroller->isAtBottom() : false;
+
LLUICtrl::reshape( width, height, called_from_parent );
-
- if (is_scrolled_to_end)
+
+ if (mScroller && scrolled_to_bottom && mTrackEnd)
{
- deselect();
- endOfDoc();
- }
+ // keep bottom of text buffer visible
+ // do this here as well as in reflow to handle case
+ // where shrinking from top, which causes buffer to temporarily
+ // not be scrolled to the bottom, since the scroll index
+ // specified the _top_ of the visible document region
+ mScroller->goToBottom();
+ }
// do this first after reshape, because other things depend on
// up-to-date mVisibleTextRect
@@ -1116,6 +1117,34 @@ void LLTextBase::reflow()
updateSegments();
+ if (mReflowIndex == S32_MAX)
+ {
+ return;
+ }
+
+ bool scrolled_to_bottom = mScroller ? mScroller->isAtBottom() : false;
+
+ LLRect cursor_rect = getLocalRectFromDocIndex(mCursorPos);
+ bool follow_selection = getLocalRect().overlaps(cursor_rect); // cursor is (potentially) visible
+
+ // store in top-left relative coordinates to avoid issues with horizontal scrollbar appearing and disappearing
+ cursor_rect.mTop = mVisibleTextRect.mTop - cursor_rect.mTop;
+ cursor_rect.mBottom = mVisibleTextRect.mTop - cursor_rect.mBottom;
+
+ S32 first_line = getFirstVisibleLine();
+
+ // if scroll anchor not on first line, update it to first character of first line
+ if (!mLineInfoList.empty()
+ && (mScrollIndex < mLineInfoList[first_line].mDocIndexStart
+ || mScrollIndex >= mLineInfoList[first_line].mDocIndexEnd))
+ {
+ mScrollIndex = mLineInfoList[first_line].mDocIndexStart;
+ }
+ LLRect first_char_rect = getLocalRectFromDocIndex(mScrollIndex);
+ // store in top-left relative coordinates to avoid issues with horizontal scrollbar appearing and disappearing
+ first_char_rect.mTop = mVisibleTextRect.mTop - first_char_rect.mTop;
+ first_char_rect.mBottom = mVisibleTextRect.mTop - first_char_rect.mBottom;
+
S32 reflow_count = 0;
while(mReflowIndex < S32_MAX)
{
@@ -1129,6 +1158,7 @@ void LLTextBase::reflow()
lldebugs << "Breaking out of reflow due to possible infinite loop in " << getName() << llendl;
break;
}
+
S32 start_index = mReflowIndex;
mReflowIndex = S32_MAX;
@@ -1136,25 +1166,6 @@ void LLTextBase::reflow()
// to force inlined widgets with follows set to shrink
mDocumentView->reshape(mVisibleTextRect.getWidth(), mDocumentView->getRect().getHeight());
- bool scrolled_to_bottom = mScroller ? mScroller->isAtBottom() : false;
-
- LLRect old_cursor_rect = getLocalRectFromDocIndex(mCursorPos);
- bool follow_selection = mVisibleTextRect.overlaps(old_cursor_rect); // cursor is visible
- old_cursor_rect.translate(-mVisibleTextRect.mLeft, -mVisibleTextRect.mBottom);
-
- S32 first_line = getFirstVisibleLine();
-
- // if scroll anchor not on first line, update it to first character of first line
- if (!mLineInfoList.empty()
- && (mScrollIndex < mLineInfoList[first_line].mDocIndexStart
- || mScrollIndex >= mLineInfoList[first_line].mDocIndexEnd))
- {
- mScrollIndex = mLineInfoList[first_line].mDocIndexStart;
- }
- LLRect first_char_rect = getLocalRectFromDocIndex(mScrollIndex);
- // subtract off effect of horizontal scrollbar from local position of first char
- first_char_rect.translate(-mVisibleTextRect.mLeft, -mVisibleTextRect.mBottom);
-
S32 cur_top = 0;
segment_set_t::iterator seg_iter = mSegments.begin();
@@ -1275,32 +1286,42 @@ void LLTextBase::reflow()
segmentp->updateLayout(*this);
}
+ }
- // apply scroll constraints after reflowing text
- if (!hasMouseCapture() && mScroller)
+ // apply scroll constraints after reflowing text
+ if (!hasMouseCapture() && mScroller)
+ {
+ if (scrolled_to_bottom && mTrackEnd)
{
- if (scrolled_to_bottom && mTrackEnd)
- {
- // keep bottom of text buffer visible
- endOfDoc();
- }
- else if (hasSelection() && follow_selection)
- {
- // keep cursor in same vertical position on screen when selecting text
- LLRect new_cursor_rect_doc = getDocRectFromDocIndex(mCursorPos);
- mScroller->scrollToShowRect(new_cursor_rect_doc, old_cursor_rect);
- }
- else
- {
- // keep first line of text visible
- LLRect new_first_char_rect = getDocRectFromDocIndex(mScrollIndex);
- mScroller->scrollToShowRect(new_first_char_rect, first_char_rect);
- }
+ // keep bottom of text buffer visible
+ endOfDoc();
}
+ else if (hasSelection() && follow_selection)
+ {
+ // keep cursor in same vertical position on screen when selecting text
+ LLRect new_cursor_rect_doc = getDocRectFromDocIndex(mCursorPos);
+ LLRect old_cursor_rect = cursor_rect;
+ old_cursor_rect.mTop = mVisibleTextRect.mTop - cursor_rect.mTop;
+ old_cursor_rect.mBottom = mVisibleTextRect.mTop - cursor_rect.mBottom;
- // reset desired x cursor position
- updateCursorXPos();
+ mScroller->scrollToShowRect(new_cursor_rect_doc, old_cursor_rect);
+ }
+ else
+ {
+ // keep first line of text visible
+ LLRect new_first_char_rect = getDocRectFromDocIndex(mScrollIndex);
+
+ // pass in desired rect in the coordinate frame of the document viewport
+ LLRect old_first_char_rect = first_char_rect;
+ old_first_char_rect.mTop = mVisibleTextRect.mTop - first_char_rect.mTop;
+ old_first_char_rect.mBottom = mVisibleTextRect.mTop - first_char_rect.mBottom;
+
+ mScroller->scrollToShowRect(new_first_char_rect, old_first_char_rect);
+ }
}
+
+ // reset desired x cursor position
+ updateCursorXPos();
}
LLRect LLTextBase::getTextBoundingRect()
@@ -1858,7 +1879,7 @@ S32 LLTextBase::getDocIndexFromLocalCoord( S32 local_x, S32 local_y, BOOL round,
pos = segment_line_start;
break;
}
- if (local_x < start_x + text_width // cursor to left of right edge of text
+ if (local_x < start_x + text_width // cursor to left of right edge of text
|| newline) // or this line ends with a newline, set doc pos to newline char
{
// Figure out which character we're nearest to.
@@ -1958,11 +1979,18 @@ LLRect LLTextBase::getDocRectFromDocIndex(S32 pos) const
LLRect LLTextBase::getLocalRectFromDocIndex(S32 pos) const
{
+ LLRect content_window_rect = mScroller ? mScroller->getContentWindowRect() : getLocalRect();
+ if (mBorderVisible)
+ {
+ content_window_rect.stretch(-1);
+ }
+
LLRect local_rect;
+
if (mLineInfoList.empty())
{
// return default height rect in upper left
- local_rect = mVisibleTextRect;
+ local_rect = content_window_rect;
local_rect.mBottom = local_rect.mTop - (S32)(mDefaultFont->getLineHeight());
return local_rect;
}
@@ -1973,8 +2001,8 @@ LLRect LLTextBase::getLocalRectFromDocIndex(S32 pos) const
// compensate for scrolled, inset view of doc
LLRect scrolled_view_rect = getVisibleDocumentRect();
local_rect = doc_rect;
- local_rect.translate(mVisibleTextRect.mLeft - scrolled_view_rect.mLeft,
- mVisibleTextRect.mBottom - scrolled_view_rect.mBottom);
+ local_rect.translate(content_window_rect.mLeft - scrolled_view_rect.mLeft,
+ content_window_rect.mBottom - scrolled_view_rect.mBottom);
return local_rect;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-27 20:17:09 +0000