reimplemented pointer default functionality

2019-10-12 06:37:53 +11:00
parent 937acd4c8c
commit 6f4e5a04e4
36 changed files with 146 additions and 63 deletions
@@ -0,0 +1,59 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2019 Olive Team
+
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+***/
+
+#include "widget/timelinewidget/timelinewidget.h"
+
+TimelineWidget::ZoomTool::ZoomTool(TimelineWidget *parent) :
+  Tool(parent)
+{
+}
+
+void TimelineWidget::ZoomTool::MousePress(TimelineViewMouseEvent *event)
+{
+  Q_UNUSED(event)
+}
+
+void TimelineWidget::ZoomTool::MouseMove(TimelineViewMouseEvent *event)
+{
+  Q_UNUSED(event)
+}
+
+void TimelineWidget::ZoomTool::MouseRelease(TimelineViewMouseEvent *event)
+{
+  double scale = parent()->scale_;
+
+  // Normalize zoom location for 1.0 scale
+  double frame_x = parent()->TimeToScene(event->GetCoordinates().GetFrame());
+
+  if (event->GetModifiers() & Qt::AltModifier) {
+    // Zoom out if the user clicks while holding Alt
+    scale *= 0.5;
+  } else {
+    // Otherwise zoom in
+    scale *= 2;
+  }
+
+  parent()->SetScale(scale);
+
+  // Adjust zoom location for new scale
+  frame_x *= scale;
+
+  parent()->CenterOn(frame_x);
+}