moved undostack to its own source file

dialogs/mediapropertiesdialog.cpp

@@ -35,6 +35,7 @@
 #include "project/media.h"
 #include "panels/project.h"
 #include "undo/undo.h"
+#include "undo/undostack.h"
 
 MediaPropertiesDialog::MediaPropertiesDialog(QWidget *parent, Media *i) :
   QDialog(parent),

dialogs/newsequencedialog.cpp

@@ -23,6 +23,7 @@
 #include "panels/panels.h"
 #include "panels/project.h"
 #include "timeline/sequence.h"
+#include "undo/undostack.h"
 #include "undo/undo.h"
 #include "timeline/clip.h"
 #include "panels/timeline.h"

dialogs/preferencesdialog.cpp

@@ -544,6 +544,12 @@ void PreferencesDialog::setup_ui() {
   use_software_fallbacks_checkbox->setChecked(olive::CurrentConfig.use_software_fallback);
   general_layout->addWidget(use_software_fallbacks_checkbox, row, 0, 1, 4);
 
+  row++;
+
+  // General -> Default Sequence Settings
+  QPushButton* default_sequence_settings = new QPushButton(tr("Default Sequence Settings"));
+  general_layout->addWidget(default_sequence_settings);
+
   tabWidget->addTab(general_tab, tr("General"));
 
   // Behavior

dialogs/preferencesdialog.h

@@ -34,6 +34,8 @@
 #include <QDoubleSpinBox>
 #include <QSpinBox>
 
+#include "timeline/sequence.h"
+
 class KeySequenceEditor : public QKeySequenceEdit {
   Q_OBJECT
 public:
@@ -72,6 +74,13 @@ private:
 
   // used to delete previews
   // type can be: 't' for thumbnails, 'w' for waveforms, or 1 for all
+  /**
+   * @brief Delete disk cached preview files (thumbnails, waveforms, etc.)
+   *
+   * @param type
+   *
+   * The types of previews to
+   */
   void delete_previews(char type);
 
   QLineEdit* custom_css_fn;
@@ -94,6 +103,7 @@ private:
   QSpinBox* waveform_res_spinbox;
   QCheckBox* add_default_effects_to_clips;
   QComboBox* ui_style;
+  Sequence sequence_settings;
 
   QVector<QAction*> key_shortcut_actions;
   QVector<QTreeWidgetItem*> key_shortcut_items;

dialogs/replaceclipmediadialog.cpp

@@ -20,16 +20,16 @@
 
 #include "replaceclipmediadialog.h"
 
-#include "panels/panels.h"
-
-#include "rendering/cacher.h"
-#include "undo/undo.h"
-
 #include <QVBoxLayout>
 #include <QLabel>
 #include <QPushButton>
 #include <QMessageBox>
 
+#include "panels/panels.h"
+#include "undo/undostack.h"
+#include "rendering/cacher.h"
+#include "undo/undo.h"
+
 ReplaceClipMediaDialog::ReplaceClipMediaDialog(QWidget *parent, Media* old_media) :
   QDialog(parent),
   media(old_media)

dialogs/speeddialog.cpp

@@ -32,6 +32,7 @@
 #include "panels/panels.h"
 #include "panels/timeline.h"
 #include "undo/undo.h"
+#include "undo/undostack.h"
 #include "effects/effect.h"
 #include "project/media.h"