first commit

TASViewer.cs

@@ -0,0 +1,67 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using BallanceTASEditor.Core;
+using BallanceTASEditor.Core.TASStruct;
+using System.Collections.ObjectModel;
+using System.Windows.Controls;
+using System.Windows;
+
+namespace BallanceTASEditor {
+    public class TASViewer : IDisposable {
+        public TASViewer(TASFile file, Slider slider, DataGrid datagrid) {
+            mFile = file;
+            mSlider = slider;
+            mDataGrid = datagrid;
+
+            // restore slider
+            mSlider.Minimum = 0;
+            updateSliderRange();
+
+            // init data
+            mPosition = 0;
+            mDataSource = new ObservableCollection<FrameDataDisplay>();
+            INVALID_FRAME_DATA = new FrameData(-1f, 0);
+            for (int i = 0; i < DATA_LIST_LENGTH; i++) {
+                mDataSource.Add(new FrameDataDisplay(0, INVALID_FRAME_DATA));
+            }
+            mFile.Get(mDataSource, 0, DATA_LIST_LENGTH);
+
+            // bind event and source
+            mDataGrid.ItemsSource = mDataSource;
+            mSlider.ValueChanged += sliderValueChanged;
+        }
+        public void Dispose() {
+            mDataGrid.ItemsSource = null;
+            mSlider.ValueChanged -= sliderValueChanged;
+        }
+
+        const int DATA_LIST_LENGTH = 30;
+        FrameData INVALID_FRAME_DATA;
+        TASFile mFile;
+        Slider mSlider;
+        DataGrid mDataGrid;
+        long mPosition;
+        ObservableCollection<FrameDataDisplay> mDataSource;
+
+        private void sliderValueChanged(object sender, RoutedPropertyChangedEventArgs<double> e) {
+            long pos = Convert.ToInt64(Math.Floor(e.NewValue));
+            long offset = pos - mPosition;
+            mFile.Shift(offset);
+            var gotten = mFile.Get(mDataSource, pos, DATA_LIST_LENGTH);
+            for(; gotten < DATA_LIST_LENGTH; gotten++) {
+                mDataSource[gotten].Reload(-1, INVALID_FRAME_DATA);
+            }
+
+            mPosition = pos;
+        }
+
+        private void updateSliderRange() {
+            long newSize = mFile.mFrameCount - 1;
+            if (mSlider.Value > newSize)
+                mSlider.Value = newSize;
+            mSlider.Maximum = newSize;
+        }
+    }
+}