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Did some performance improvements for the CreateShadow, without using our Gaussian (is still available) this saves a temporarily additional bitmap copy. On Vista/Windows 7 GDI+ is used, on other systems a fall-back with BoxBlur is used.

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git-svn-id: http://svn.code.sf.net/p/greenshot/code/trunk@2496 7dccd23d-a4a3-4e1f-8c07-b4c1b4018ab4
This commit is contained in:
RKrom 2013-02-17 10:00:40 +00:00
commit 0989012a37
3 changed files with 268 additions and 119 deletions
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18
GreenshotPlugin/UnmanagedHelpers/GDIplus.cs
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@ -164,7 +164,16 @@ namespace GreenshotPlugin.UnmanagedHelpers {
}
return (IntPtr)FIELD_INFO_NATIVE_IMAGEATTRIBUTES.GetValue(imageAttributes);
}
private static bool canApply() {
if (Environment.OSVersion.Version.Major < 6) {
return false;
} else if ((Environment.OSVersion.Version.Major >= 6 && Environment.OSVersion.Version.Minor >= 2) && radius < 20) {
return false;
}
return true;
}
/// <summary>
/// Use the GDI+ blur effect on the bitmap
/// </summary>
@ -174,7 +183,7 @@ namespace GreenshotPlugin.UnmanagedHelpers {
/// <param name="expandEdges">bool true if the edges are expanded with the radius</param>
/// <returns>false if there is no GDI+ available or an exception occured</returns>
public static bool ApplyBlur(Bitmap destinationBitmap, Rectangle area, int radius, bool expandEdges) {
if (Environment.OSVersion.Version.Major < 6) {
if (!canApply()) {
return false;
}
IntPtr hBlurParams = IntPtr.Zero;
@ -228,11 +237,10 @@ namespace GreenshotPlugin.UnmanagedHelpers {
/// </summary>
/// <returns>false if there is no GDI+ available or an exception occured</returns>
public static bool DrawWithBlur(Graphics graphics, Bitmap image, Rectangle source, Matrix transform, ImageAttributes imageAttributes, int radius, bool expandEdges) {
if (Environment.OSVersion.Version.Major < 6) {
return false;
} else if ((Environment.OSVersion.Version.Major >= 6 && Environment.OSVersion.Version.Minor >= 2) && radius < 20) {
if (!canApply()) {
return false;
}
IntPtr hBlurParams = IntPtr.Zero;
IntPtr hEffect = IntPtr.Zero;