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plot: add Trim (T)

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This commit is contained in:
Philippe Teuwen 2020-10-04 20:01:27 +02:00
commit 2422622da1
2 changed files with 25 additions and 0 deletions
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24
client/src/proxguiqt.cpp
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@ -687,6 +687,25 @@ void Plot::Move(int offset) {
} }
} }
void Plot::Trim(void) {
uint32_t lref, rref;
if ((CursorAPos == 0) || (CursorBPos == 0)) { // if we don't have both cursors set
lref = GraphStart;
rref = GraphStop;
} else {
lref = CursorAPos < CursorBPos ? CursorAPos : CursorBPos;
rref = CursorAPos < CursorBPos ? CursorBPos : CursorAPos;
GraphPixelsPerPoint = GraphPixelsPerPoint * (GraphStop - GraphStart) / (rref - lref);
CursorAPos -= lref;
CursorBPos -= lref;
}
for (uint32_t i = lref; i < rref; ++i)
GraphBuffer[i - lref] = GraphBuffer[i];
GraphTraceLen = rref - lref;
GraphStart = 0;
// RepaintGraphWindow();
}
void Plot::wheelEvent(QWheelEvent *event) { void Plot::wheelEvent(QWheelEvent *event) {
// event->delta() // event->delta()
// 120 => shift right 5% // 120 => shift right 5%
@ -809,6 +828,7 @@ void Plot::keyPressEvent(QKeyEvent *event) {
puts("\tH Show help"); puts("\tH Show help");
puts("\tL Toggle lock grid relative to samples"); puts("\tL Toggle lock grid relative to samples");
puts("\tQ Hide window"); puts("\tQ Hide window");
puts("\tT Trim data on displayed window or on cursors if defined");
puts("\tHOME Move to the start of the graph"); puts("\tHOME Move to the start of the graph");
puts("\tEND Move to the end of the graph"); puts("\tEND Move to the end of the graph");
puts("\tPGUP Page left"); puts("\tPGUP Page left");
@ -838,6 +858,10 @@ void Plot::keyPressEvent(QKeyEvent *event) {
master->hide(); master->hide();
break; break;
case Qt::Key_T:
Trim();
break;
case Qt::Key_Home: case Qt::Key_Home:
GraphStart = 0; GraphStart = 0;
break; break;

1
client/src/proxguiqt.h
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@ -53,6 +53,7 @@ class Plot: public QWidget {
void closeEvent(QCloseEvent *event); void closeEvent(QCloseEvent *event);
void Zoom(float factor, int refX); void Zoom(float factor, int refX);
void Move(int offset); void Move(int offset);
void Trim(void);
void wheelEvent(QWheelEvent *event); void wheelEvent(QWheelEvent *event);
void mouseMoveEvent(QMouseEvent *event); void mouseMoveEvent(QMouseEvent *event);
void mousePressEvent(QMouseEvent *event) { mouseMoveEvent(event); } void mousePressEvent(QMouseEvent *event) { mouseMoveEvent(event); }