public async Task SaveAnimeGifAsync(AnimeGifSettings settings, string path) {
var animeGif = new GifAnimationGenerator(settings.ScreenSize);
BitmapBufferStack buffer = new BitmapBufferStack(settings.ScreenSize);
var count = ItemCount;
var index = 0;
foreach (var frame in Items) {
frame.Render(settings, buffer);
animeGif.AddImage(buffer.GetPrimaryBuffer(), frame.Delay);
await Task.Delay(1);
++index;
Progress = (float)index / (float)count;
ProgressChanged(this, EventArgs.Empty);
}
animeGif.SaveTo(path);
var fi = new FileInfo(path);
if (fi.Length >= RecommendedFileSize) {
var recommendedSizeMB = Math.Round((float)RecommendedFileSize / 1024f / 1024f, 2);
var actualSizeMB = Math.Round((float)fi.Length / 1024f / 1024f, 2);
MessageBox.Show(
"ファイルサイズが " + recommendedSizeMB + " MB を超えています ( " + actualSizeMB + " MB )",
Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
}
/// <summary>バッファを指定してスクリーンをレンダリングする</summary>
public void Render(AnimeGifSettings settings, BitmapBufferStack buffer) {
Rectangle viewRect = new Rectangle(Point.Empty, buffer.PrimaryBufferSize);
// 画像
using (var g = buffer.CreateGraphics()) {
g.Clear(Color.FromArgb(settings.BackColorARGB));
var srcRect = new Rectangle(Point.Empty, Size);
var destRect = Miscs.GetInternalContactRect(viewRect, srcRect.Size);
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
g.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighQuality;
g.DrawImage(FoldedImage.Data, destRect, srcRect, GraphicsUnit.Pixel);
}
// プログレスバー
var captionBottomMargin = 0;
if (settings.ShowProgressBar && IndexProbider != null) {
buffer.Push();
Color innerColor = Color.FromArgb(settings.CaptionTextStyle.TextColorARGB);
Color outerColor = Miscs.GetShadowColorOf(innerColor);
var barMargin = viewRect.Width / 200;
var barHeight = viewRect.Width / 75;
var progressBarRect = viewRect;
progressBarRect.X += barMargin;
progressBarRect.Y = progressBarRect.Bottom - barHeight - barMargin;
progressBarRect.Width -= barMargin * 2;
progressBarRect.Height = barHeight;
captionBottomMargin = viewRect.Bottom - progressBarRect.Y;
using (var g = buffer.CreateGraphics())
using (var innerBrush = new SolidBrush(innerColor))
using (var outerBrush = new SolidBrush(outerColor)) {
g.FillRectangle(outerBrush, progressBarRect);
progressBarRect.Inflate(-1, -1);
if (this.IndexProbider.ItemCount >= 2) {
progressBarRect.Width = progressBarRect.Width * Index / (IndexProbider.ItemCount - 1);
}
g.FillRectangle(innerBrush, progressBarRect);
}
buffer.Pop(alpha: 0.5f);
}
// ウォーターマーク
var watermarkText = settings.WaterMarkText;
if (!string.IsNullOrWhiteSpace(watermarkText)) {
buffer.Push();
Color innerColor = Color.FromArgb(settings.WaterMarkTextStyle.TextColorARGB);
Color outerColor = Miscs.GetShadowColorOf(innerColor);
using (var g = buffer.CreateGraphics())
using (var innerBrush = new SolidBrush(innerColor))
using (var outerBrush = new SolidBrush(outerColor)) {
g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias;
g.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighQuality;
var format = new StringFormat();
format.Alignment = StringAlignment.Far;
format.LineAlignment = StringAlignment.Near;
drawText(g, watermarkText, settings.WaterMarkTextStyle.GetFont(),
outerBrush, innerBrush, viewRect, format);
}
buffer.Pop(alpha: 0.5f);
}
// キャプション
var captionText = CaptionText;
if (!string.IsNullOrWhiteSpace(captionText)) {
buffer.Push();
Color innerColor = Color.FromArgb(settings.CaptionTextStyle.TextColorARGB);
Color outerColor = Miscs.GetShadowColorOf(innerColor);
var font = settings.CaptionTextStyle.GetFont();
using (var g = buffer.CreateGraphics())
using (var innerBrush = new SolidBrush(innerColor))
using (var outerBrush = new SolidBrush(outerColor)) {
g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias;
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
g.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighQuality;
var format = new StringFormat();
format.Alignment = StringAlignment.Near;
format.LineAlignment = StringAlignment.Far;
Rectangle captionRect = viewRect;
captionRect.Height -= captionBottomMargin;
float descentByEm = font.FontFamily.GetCellDescent(font.Style); // ベースラインから下の高さ(em単位)
float pointsPerEm = font.SizeInPoints / font.FontFamily.GetEmHeight(font.Style);
float pixelsPerPoint = g.DpiY / 72f; // 1 inch = 72 pt.
captionRect.Y += (int)(descentByEm * pointsPerEm * pixelsPerPoint);
drawText(g, captionText, font, outerBrush, innerBrush, captionRect, format);
}
buffer.Pop();
}
}