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202 lines
No EOL
5.5 KiB
C#
202 lines
No EOL
5.5 KiB
C#
#region License Information (GPL v3)
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/*
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ShareX - A program that allows you to take screenshots and share any file type
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Copyright (c) 2007-2019 ShareX Team
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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Optionally you can also view the license at <http://www.gnu.org/licenses/>.
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*/
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#endregion License Information (GPL v3)
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using ShareX.HelpersLib;
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using System.Drawing;
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using System.Drawing.Drawing2D;
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using System.Threading.Tasks;
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namespace ShareX.ScreenCaptureLib
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{
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public abstract class BaseEffectShape : BaseShape
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{
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public override ShapeCategory ShapeCategory { get; } = ShapeCategory.Effect;
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public abstract string OverlayText { get; }
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private bool drawCache, isEffectCaching, isCachePending, isDisposePending;
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private Image cachedEffect;
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public abstract void ApplyEffect(Bitmap bmp);
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public override void OnUpdate()
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{
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base.OnUpdate();
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if (isCachePending)
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{
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CacheEffect();
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}
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}
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public virtual void OnDraw(Graphics g)
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{
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if (drawCache && isEffectCaching)
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{
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OnDrawOverlay(g, "Processing...");
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}
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else if (drawCache && cachedEffect != null)
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{
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g.InterpolationMode = InterpolationMode.NearestNeighbor;
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g.DrawImage(cachedEffect, RectangleInsideCanvas);
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g.InterpolationMode = InterpolationMode.Bilinear;
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}
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else
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{
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OnDrawOverlay(g);
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}
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}
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public virtual void OnDrawOverlay(Graphics g)
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{
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OnDrawOverlay(g, OverlayText);
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}
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public void OnDrawOverlay(Graphics g, string overlayText)
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{
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using (Brush brush = new SolidBrush(Color.FromArgb(150, Color.Black)))
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{
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g.FillRectangle(brush, Rectangle);
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}
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g.DrawCornerLines(Rectangle.Offset(1), Pens.White, 25);
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using (Font font = new Font("Verdana", 12))
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{
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Size textSize = g.MeasureString(overlayText, font).ToSize();
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if (Rectangle.Width > textSize.Width && Rectangle.Height > textSize.Height)
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{
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using (StringFormat sf = new StringFormat { Alignment = StringAlignment.Center, LineAlignment = StringAlignment.Center })
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{
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g.DrawString(overlayText, font, Brushes.White, Rectangle, sf);
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}
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}
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}
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}
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public virtual void OnDrawFinal(Graphics g, Bitmap bmp)
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{
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Rectangle rect = Rectangle.Intersect(new Rectangle(0, 0, bmp.Width, bmp.Height), Rectangle);
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if (!rect.IsEmpty)
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{
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using (Bitmap croppedImage = ImageHelpers.CropBitmap(bmp, rect))
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{
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ApplyEffect(croppedImage);
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g.DrawImage(croppedImage, rect);
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}
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}
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}
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public override void OnCreated()
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{
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base.OnCreated();
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CacheEffect();
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}
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public override void OnMoving()
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{
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StopDrawCache();
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}
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public override void OnMoved()
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{
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CacheEffect();
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}
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public override void OnResizing()
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{
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StopDrawCache();
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}
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public override void OnResized()
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{
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CacheEffect();
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}
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private void CacheEffect()
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{
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if (!isEffectCaching)
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{
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isCachePending = false;
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drawCache = true;
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ClearCache();
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if (IsInsideCanvas)
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{
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isEffectCaching = true;
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cachedEffect = Manager.CropImage(RectangleInsideCanvas);
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Task.Run(() =>
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{
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ApplyEffect((Bitmap)cachedEffect);
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isEffectCaching = false;
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if (isDisposePending)
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{
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Dispose();
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}
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});
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}
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}
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else
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{
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isCachePending = true;
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}
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}
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private void StopDrawCache()
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{
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drawCache = false;
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isCachePending = false;
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}
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private void ClearCache()
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{
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if (!isEffectCaching && cachedEffect != null)
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{
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cachedEffect.Dispose();
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cachedEffect = null;
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}
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}
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public override void Dispose()
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{
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if (isEffectCaching)
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{
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isDisposePending = true;
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}
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else
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{
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ClearCache();
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}
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}
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}
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} |