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Bug 1296 - Zooming to maximum in longer multi-clip tracks crashes in all clips except the last

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Caused by a premature conversion of a wxInt64 to (int) so that a large positive number became negative.
We now do the conversion after minning it against an integer width.
This commit is contained in:
James Crook 2016-01-08 18:45:01 +00:00
parent c57eeb46bc
commit 104e8b50ba
1 changed files with 19 additions and 26 deletions
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45
src/TrackArtist.cpp
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@ -1585,29 +1585,26 @@ struct ClipParameters
hiddenMid = rect;
// If the left edge of the track is to the right of the left
// edge of the display, then there's some blank area to the
// edge of the display, then there's some unused area to the
// left of the track. Reduce the "hiddenMid"
hiddenLeftOffset = 0;
if (tpre < 0) {
hiddenLeftOffset = std::min(rect.width, int(
zoomInfo.TimeToPosition(tOffset, 0
, true
)
));
// Fix Bug #1296 caused by premature conversion to (int).
wxInt64 time64 = zoomInfo.TimeToPosition(tOffset, 0 , false);
hiddenLeftOffset = (time64 < rect.width) ? (int)time64 : rect.width;
hiddenMid.x += hiddenLeftOffset;
hiddenMid.width -= hiddenLeftOffset;
}
// If the right edge of the track is to the left of the the right
// edge of the display, then there's some blank area to the right
// edge of the display, then there's some unused area to the right
// of the track. Reduce the "hiddenMid" rect by the
// size of the blank area.
if (tpost > t1) {
const int hiddenRightOffset = std::min(rect.width, int(
zoomInfo.TimeToPosition(tOffset + t1, 0
, true
)
));
wxInt64 time64 = zoomInfo.TimeToPosition(tOffset+t1, 0 , false);
const int hiddenRightOffset = (time64 < rect.width) ? (int)time64 : rect.width;
hiddenMid.width = std::max(0, hiddenRightOffset - hiddenLeftOffset);
}
@ -1617,29 +1614,25 @@ struct ClipParameters
mid = rect;
// If the left edge of the track is to the right of the left
// edge of the display, then there's some blank area to the
// left of the track. Reduce the "hiddenMid"
// edge of the display, then there's some unused area to the
// left of the track. Reduce the "mid"
leftOffset = 0;
if (tpre < 0) {
leftOffset = std::min(rect.width, int(
zoomInfo.TimeToPosition(tOffset, 0
, false
)
));
wxInt64 time64 = zoomInfo.TimeToPosition(tOffset, 0 , false);
leftOffset = (time64 < rect.width) ? (int)time64 : rect.width;
mid.x += leftOffset;
mid.width -= leftOffset;
}
// If the right edge of the track is to the left of the the right
// edge of the display, then there's some blank area to the right
// of the track. Reduce the "hiddenMid" rect by the
// edge of the display, then there's some unused area to the right
// of the track. Reduce the "mid" rect by the
// size of the blank area.
if (tpost > t1) {
const int distortedRightOffset = std::min(rect.width, int(
zoomInfo.TimeToPosition(tOffset + t1, 0
, false
)
));
wxInt64 time64 = zoomInfo.TimeToPosition(tOffset+t1, 0 , false);
const int distortedRightOffset = (time64 < rect.width) ? (int)time64 : rect.width;
mid.width = std::max(0, distortedRightOffset - leftOffset);
}
}