added more snapping

2018-06-09 01:59:16 -07:00
parent cf18e52e90
commit b8fc5f4dac
6 changed files with 116 additions and 6 deletions
@@ -0,0 +1,58 @@
+#include "timelineheader.h"
+
+#include "panels/panels.h"
+#include "panels/timeline.h"
+#include "project/sequence.h"
+
+#include <QPainter>
+#include <QMouseEvent>
+
+#define PLAYHEAD_SIZE 6
+
+TimelineHeader::TimelineHeader(QWidget *parent) : QWidget(parent)
+{
+    dragging = false;
+}
+
+void set_playhead(QMouseEvent* event) {
+    long frame = panel_timeline->getFrameFromScreenPoint(event->pos().x());
+    if (panel_timeline->snapping) {
+        panel_timeline->snap_to_clip(&frame);
+    }
+    panel_timeline->seek(frame);
+    panel_timeline->repaint_timeline();
+}
+
+void TimelineHeader::mousePressEvent(QMouseEvent* event) {
+    set_playhead(event);
+    dragging = true;
+}
+
+void TimelineHeader::mouseMoveEvent(QMouseEvent* event) {
+    if (dragging) set_playhead(event);
+}
+
+void TimelineHeader::mouseReleaseEvent(QMouseEvent *) {
+    dragging = false;
+}
+
+void TimelineHeader::paintEvent(QPaintEvent*) {
+    if (panel_timeline->sequence != NULL) {
+        QPainter p(this);
+        p.setPen(Qt::gray);
+        int interval = panel_timeline->getScreenPointFromFrame(panel_timeline->sequence->frame_rate);
+        for (int i=0;i<width();i+=interval) {
+            p.drawLine(i, 0, i, height());
+        }
+
+        // draw playhead triangle
+        int px = panel_timeline->getScreenPointFromFrame(panel_timeline->playhead);
+        QPoint start(px, height());
+        QPainterPath path;
+        path.moveTo(start);
+        path.lineTo(px-PLAYHEAD_SIZE, 0);
+        path.lineTo(px+PLAYHEAD_SIZE, 0);
+        path.lineTo(start);
+        p.fillPath(path, Qt::red);
+    }
+}