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Fixed shadow with transparency issue.

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git-svn-id: http://svn.code.sf.net/p/greenshot/code/trunk@2095 7dccd23d-a4a3-4e1f-8c07-b4c1b4018ab4
This commit is contained in:
RKrom 2012-09-25 12:19:22 +00:00
parent 9488200886
commit d8cb00e70c
4 changed files with 49 additions and 51 deletions
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85
GreenshotPlugin/Core/ImageHelper.cs
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@ -428,7 +428,7 @@ namespace GreenshotPlugin.Core {
}
byte[] nullColor = new byte[] { 255, 255, 255, 255 };
if (sourceBitmap.PixelFormat == PixelFormat.Format32bppArgb) {
if (sourceBitmap.PixelFormat == PixelFormat.Format32bppArgb || sourceBitmap.PixelFormat == PixelFormat.Format32bppPArgb) {
nullColor = new byte[] { 0, 0, 0, 0 };
}
byte[] settingColor = new byte[4];
@ -724,53 +724,51 @@ namespace GreenshotPlugin.Core {
/// <param name="targetPixelformat">What pixel format must the returning bitmap have</param>
/// <param name="offset">How many pixels is the original image moved?</param>
/// <returns>Bitmap with the shadow, is bigger than the sourceBitmap!!</returns>
public static Bitmap CreateShadow(Image sourceBitmap, float darkness, int shadowSize, Point offset, PixelFormat targetPixelformat) {
public static Bitmap CreateShadow(Image sourceBitmap, float darkness, int shadowSize, ref Point offset, PixelFormat targetPixelformat) {
// Create a new "clean" image
Bitmap newImage = CreateEmpty(sourceBitmap.Width + (shadowSize * 2), sourceBitmap.Height + (shadowSize * 2), targetPixelformat, Color.Empty, sourceBitmap.HorizontalResolution, sourceBitmap.VerticalResolution);
Bitmap returnImage = null;
offset.X += shadowSize - 1;
offset.Y += shadowSize - 1;
using (Bitmap tmpImage = CreateEmpty(sourceBitmap.Width + (shadowSize * 2), sourceBitmap.Height + (shadowSize * 2), targetPixelformat, Color.Empty, sourceBitmap.HorizontalResolution, sourceBitmap.VerticalResolution)) {
using (Graphics graphics = Graphics.FromImage(tmpImage)) {
// Make sure we draw with the best quality!
graphics.SmoothingMode = SmoothingMode.HighQuality;
graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
graphics.CompositingQuality = CompositingQuality.HighQuality;
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
using (Graphics graphics = Graphics.FromImage(newImage)) {
// Make sure we draw with the best quality!
graphics.SmoothingMode = SmoothingMode.HighQuality;
graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
graphics.CompositingQuality = CompositingQuality.HighQuality;
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
// Draw "shadow" offsetted
ImageAttributes ia = new ImageAttributes();
ColorMatrix cm = new ColorMatrix();
cm.Matrix00 = 0;
cm.Matrix11 = 0;
cm.Matrix22 = 0;
cm.Matrix33 = darkness;
ia.SetColorMatrix(cm);
Rectangle shadowRectangle = new Rectangle(new Point(shadowSize, shadowSize), sourceBitmap.Size);
graphics.DrawImage(sourceBitmap, shadowRectangle, 0, 0, sourceBitmap.Width, sourceBitmap.Height, GraphicsUnit.Pixel, ia);
// Only do the blur on the edges
//Rectangle blurRectangle = new Rectangle(shadowSize + 30, shadowSize + 30, sourceBitmap.Width - 60, sourceBitmap.Height - 60);
//Rectangle applyRect = ImageHelper.CreateIntersectRectangle(newImage.Size, blurRectangle, true);
//LOG.DebugFormat("blurRect = {0} - applyRect = {1}", blurRectangle, applyRect);
//using (Bitmap blurImage = ImageHelper.CreateBlur(newImage, applyRect, true, shadowSize, 1d, true, blurRectangle)) {
// if (blurImage != null) {
// graphics.DrawImageUnscaled(blurImage, applyRect.Location);
// }
//}
// blur "shadow", apply to whole new image
Rectangle newImageRectangle = new Rectangle(0, 0, newImage.Width, newImage.Height);
//using (Bitmap blurImage = FastBlur(newImage, shadowSize-1)) {
using (Bitmap blurImage = CreateBlur(newImage, newImageRectangle, true, shadowSize, 1d, false, newImageRectangle)) {
graphics.DrawImageUnscaled(blurImage, newImageRectangle.Location);
// Draw "shadow" offsetted
ImageAttributes ia = new ImageAttributes();
ColorMatrix cm = new ColorMatrix();
cm.Matrix00 = 0;
cm.Matrix11 = 0;
cm.Matrix22 = 0;
cm.Matrix33 = darkness;
ia.SetColorMatrix(cm);
Rectangle shadowRectangle = new Rectangle(new Point(shadowSize - 1, shadowSize - 1), sourceBitmap.Size);
graphics.DrawImage(sourceBitmap, shadowRectangle, 0, 0, sourceBitmap.Width, sourceBitmap.Height, GraphicsUnit.Pixel, ia);
}
// draw original with a TextureBrush so we have nice antialiasing!
using (Brush textureBrush = new TextureBrush(sourceBitmap, WrapMode.Clamp)) {
// We need to do a translate-tranform otherwise the image is wrapped
graphics.TranslateTransform(offset.X, offset.Y);
graphics.FillRectangle(textureBrush, 0, 0, sourceBitmap.Width, sourceBitmap.Height);
// blur "shadow", apply to whole new image
Rectangle newImageRectangle = new Rectangle(0, 0, tmpImage.Width, tmpImage.Height);
//using (Bitmap blurImage = FastBlur(newImage, shadowSize-1)) {
returnImage = CreateBlur(tmpImage, newImageRectangle, true, shadowSize, 1d, false, newImageRectangle);
}
if (returnImage != null) {
using (Graphics graphics = Graphics.FromImage(returnImage)) {
// Make sure we draw with the best quality!
graphics.SmoothingMode = SmoothingMode.HighQuality;
graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
graphics.CompositingQuality = CompositingQuality.HighQuality;
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
// draw original with a TextureBrush so we have nice antialiasing!
using (Brush textureBrush = new TextureBrush(sourceBitmap, WrapMode.Clamp)) {
// We need to do a translate-tranform otherwise the image is wrapped
graphics.TranslateTransform(offset.X, offset.Y);
graphics.FillRectangle(textureBrush, 0, 0, sourceBitmap.Width, sourceBitmap.Height);
}
}
}
return newImage;
return returnImage;
}
/// <summary>
@ -883,6 +881,7 @@ namespace GreenshotPlugin.Core {
/// <returns>bool if we support it</returns>
public static bool SupportsPixelFormat(PixelFormat pixelformat) {
return (pixelformat.Equals(PixelFormat.Format32bppArgb) ||
pixelformat.Equals(PixelFormat.Format32bppPArgb) ||
pixelformat.Equals(PixelFormat.Format32bppRgb) ||
pixelformat.Equals(PixelFormat.Format24bppRgb));
}