/// プレビュー画像の描画
/// @param dc 描画先
/// @param layoutElement 描画対象
private void DrawPreview(DrawingContext dc, LayoutElement layoutElement)
{
var bitmap = App.ScreenCaptureTimer.GetBitmapSource(layoutElement);
if (bitmap == null)
{
// エラーが起きた場合は赤色の四角形を描画
var boundRect = layoutElement.GetBoundRect(
App.RuntimeOptions.CurrentSampleWidth,
App.RuntimeOptions.CurrentSampleHeight).ToRect();
dc.DrawRectangle(Brushes.Red, null, boundRect);
}
else
{
// プレビューの描画
var actualBoundRect = layoutElement.GetActualBoundRect(
App.RuntimeOptions.CurrentSampleWidth,
App.RuntimeOptions.CurrentSampleHeight).ToRect();
dc.DrawImage(bitmap, actualBoundRect);
}
}
/// 枠線とキャプションの描画
/// @param dc 描画先
/// @param layoutElement 描画対象
/// @param index 描画対象のインデックス
private void DrawBorder(DrawingContext dc, LayoutElement layoutElement, int index)
{
// フレームサイズ
var boundRect = layoutElement.GetBoundRect(
App.RuntimeOptions.CurrentSampleWidth,
App.RuntimeOptions.CurrentSampleHeight).ToRect();
// スタイルの取得
Brush textBrush;
Pen framePen;
this.CreateBorderStyle(layoutElement, out framePen, out textBrush);
// フレームの描画
var inflateValue = framePen.Thickness / 2;
var infraleRect = Rect.Inflate(boundRect, -inflateValue, -inflateValue);
dc.DrawRectangle(null, framePen, infraleRect);
// ヘッダーのドロップシャドウの描画
var shadowOffset = 1.0;
var shadowPoint = new Point(boundRect.X + shadowOffset, boundRect.Y + shadowOffset);
var shadowBoundRect = new Rect(boundRect.X + shadowOffset,
boundRect.Y + shadowOffset,
boundRect.Width - shadowOffset,
boundRect.Height - shadowOffset);
var shadow = this.CreateHeader(layoutElement, index, shadowBoundRect, BrushesAndPens.DropShadowBrush);
dc.DrawText(shadow, shadowPoint);
// ヘッダーの描画
var headerPoint = new Point(boundRect.X, boundRect.Y);
var header = this.CreateHeader(layoutElement, index, boundRect, textBrush);
dc.DrawText(header, headerPoint);
}
