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implemented vertical "zooming" in the TimelineWidget and CurveView

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This comes in the form of changing the vertical scale in the CurveView and
adjusting all track heights in the Timeline.
This commit is contained in:
itsmattkc
2019-12-31 00:23:28 +11:00
parent 441555e9f2
commit 2b24fae26f
22 changed files with 220 additions and 41 deletions
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app/widget/timelinewidget/view/timelineviewbase.cpp
+28 -16
View File
@@ -10,7 +10,8 @@ TimelineViewBase::TimelineViewBase(QWidget *parent) :
QGraphicsView(parent),
playhead_(0),
playhead_scene_left_(-1),
playhead_scene_right_(-1)
playhead_scene_right_(-1),
limit_y_axis_(false)
{
setScene(&scene_);
@@ -111,28 +112,33 @@ void TimelineViewBase::UpdateSceneRect()
{
QRectF bounding_rect = scene_.itemsBoundingRect();
// Ensure the scene height is always AT LEAST the height of the view
// The scrollbar appears to have a 1px margin on the top and bottom, hence the -2
int minimum_height = height() - horizontalScrollBar()->height() - 2;
if (limit_y_axis_) {
// Ensure the scene height is always AT LEAST the height of the view
// The scrollbar appears to have a 1px margin on the top and bottom, hence the -2
int minimum_height = height() - horizontalScrollBar()->height() - 2;
if (alignment() & Qt::AlignBottom) {
// Ensure the scene left and bottom are always 0
bounding_rect.setBottomLeft(QPointF(0, 0));
if (alignment() & Qt::AlignBottom) {
// Ensure the scene left and bottom are always 0
bounding_rect.setBottomLeft(QPointF(0, 0));
if (bounding_rect.top() > minimum_height) {
bounding_rect.setTop(-minimum_height);
if (bounding_rect.top() > minimum_height) {
bounding_rect.setTop(-minimum_height);
}
} else {
// Ensure the scene left and top are always 0
bounding_rect.setTopLeft(QPointF(0, 0));
if (bounding_rect.height() < minimum_height) {
bounding_rect.setHeight(minimum_height);
}
}
} else {
// Ensure the scene left and top are always 0
bounding_rect.setTopLeft(QPointF(0, 0));
if (bounding_rect.height() < minimum_height) {
bounding_rect.setHeight(minimum_height);
}
// We'll still limit the X to 0 since that behavior is desired by all TimelineViewBase derivatives
bounding_rect.setLeft(0);
}
// Ensure the scene is always the full length of the timeline with a gap at the end to work with
end_item_->SetEndPadding(width()/4);
end_item_->SetEndPadding(width()/2);
// If the scene is already this rect, do nothing
if (scene_.sceneRect() == bounding_rect) {
@@ -153,3 +159,9 @@ void TimelineViewBase::ScaleChangedEvent(double scale)
{
Q_UNUSED(scale)
}
void TimelineViewBase::SetLimitYAxis(bool e)
{
limit_y_axis_ = true;
UpdateSceneRect();
}