本文整理汇总了C#中CGBitmapContext.SetFillColorWithColor方法的典型用法代码示例。如果您正苦于以下问题：C# CGBitmapContext.SetFillColorWithColor方法的具体用法？C# CGBitmapContext.SetFillColorWithColor怎么用？C# CGBitmapContext.SetFillColorWithColor使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类CGBitmapContext的用法示例。
在下文中一共展示了CGBitmapContext.SetFillColorWithColor方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: BatteryNinePatchImage
public BatteryNinePatchImage(UIImage image)
{
dataImage = image.CGImage;
IntPtr dataPointer = Marshal.AllocHGlobal(dataImage.Width * dataImage.Height * 4);
CGBitmapContext context = new CGBitmapContext(dataPointer, dataImage.Width, dataImage.Height,
dataImage.BitsPerComponent, dataImage.BytesPerRow, dataImage.ColorSpace,
CGImageAlphaInfo.PremultipliedFirst);
context.SetFillColorWithColor(UIColor.White.CGColor);
context.FillRect(new RectangleF(0, 0, dataImage.Width, dataImage.Height));
context.DrawImage(new RectangleF(0, 0, dataImage.Width, dataImage.Height), dataImage);
unsafe
{
LineSegment lineSegment = null;
uint* imagePointer = (uint*) (void*) dataPointer;
for (int xx = 0; xx < dataImage.Width - 1; xx++, imagePointer++)
{
if (xx == 0)
{
continue;
}
uint thisValue = *imagePointer;
if (lineSegment != null && (thisValue == BLACK_PIXEL_FULL_ALPHA) == lineSegment.Stretch)
{
lineSegment.End = xx;
}
else
{
lineSegment = new LineSegment();
_horizontalLineSegments.Add (lineSegment);
lineSegment.Start = xx;
lineSegment.End = xx;
lineSegment.Stretch = thisValue == BLACK_PIXEL_FULL_ALPHA;
}
}
lineSegment = null;
imagePointer = (uint*) (void*) dataPointer;
for (int xx = 0; xx < dataImage.Height - 1; xx++, imagePointer += dataImage.Width)
{
if (xx == 0)
{
continue;
}
uint thisValue = *imagePointer;
if (lineSegment != null && (thisValue == BLACK_PIXEL_FULL_ALPHA) == lineSegment.Stretch)
{
lineSegment.End = xx;
}
else
{
lineSegment = new LineSegment();
lineSegment.Start = xx;
lineSegment.End = xx;
lineSegment.Stretch = thisValue == BLACK_PIXEL_FULL_ALPHA;
_verticalLineSegments.Add (lineSegment);
}
}
}
Marshal.FreeHGlobal(dataPointer);
}示例2: NinePatchImage
// create a NinePatch from file
public NinePatchImage(string fileName, ResizeMethod resizeMethod)
{
_resizeMethod = resizeMethod;
const uint BLACK_PIXEL_FULL_ALPHA = 0x000000FF;
// base image
UIImage ninePatchIamge = UIImage.FromFile(fileName);
// get lower level representaton so we can test pixels for blackness
CGImage dataImage = ninePatchIamge.CGImage;
IntPtr dataPointer = Marshal.AllocHGlobal(dataImage.Width * dataImage.Height * 4);
CGBitmapContext context = new CGBitmapContext(dataPointer, dataImage.Width, dataImage.Height,
dataImage.BitsPerComponent, dataImage.BytesPerRow, dataImage.ColorSpace,
CGImageAlphaInfo.PremultipliedFirst);
context.SetFillColorWithColor(UIColor.White.CGColor);
context.FillRect(new RectangleF(0, 0, dataImage.Width, dataImage.Height));
context.DrawImage(new RectangleF(0, 0, dataImage.Width, dataImage.Height), dataImage);
int topStart = 0;
int topEnd = dataImage.Width;
int leftStart = 0;
int leftEnd = dataImage.Height;
int bottomStart = 0;
int bottomEnd = dataImage.Width;
int rightStart = 0;
int rightEnd = dataImage.Height;
bool noPaddingSpecified = false;
int centerHeight = 0;
int centerWidth = 0;
unsafe
{
// calculate top stretch line
int firstPixel = dataImage.Width;
int lastPixel = 0;
uint* imagePointer = (uint*) (void*) dataPointer;
for (int xx = 0; xx < dataImage.Width; xx++, imagePointer++)
{
uint thisValue = *imagePointer;
if (*imagePointer == BLACK_PIXEL_FULL_ALPHA)
{
if (xx < firstPixel)
firstPixel = xx;
if (xx > lastPixel)
lastPixel = xx;
}
}
topStart = firstPixel;
topEnd = lastPixel;
_leftWidth = topStart - 1;
_rightWidth = (dataImage.Width - 2) - topEnd; // assumes padding lines (-1 if not)!
centerWidth = (dataImage.Width - 2) - (_leftWidth + _rightWidth);
// calculate left side stretch line
firstPixel = dataImage.Height;
lastPixel = 0;
imagePointer = (uint*) (void*) dataPointer;
for (int xx = 0; xx < dataImage.Height; xx++, imagePointer += dataImage.Width)
{
uint thisValue = *imagePointer;
if (thisValue == BLACK_PIXEL_FULL_ALPHA)
{
if (xx < firstPixel)
firstPixel = xx;
if (xx > lastPixel)
lastPixel = xx;
}
}
leftStart = firstPixel;
leftEnd = lastPixel;
_upperHeight = leftStart - 1;
_lowerHeight = (dataImage.Height - 2) - leftEnd;
centerHeight = (dataImage.Height - 2) - (_upperHeight + _lowerHeight);
// calculate right side padding line
firstPixel = dataImage.Height;
lastPixel = 0;
imagePointer = ((uint*) (void*) dataPointer) + (dataImage.Width - 1);
for (int xx = 0; xx < dataImage.Height; xx++, imagePointer += dataImage.Width)
{
uint thisValue = *imagePointer;
if (thisValue == BLACK_PIXEL_FULL_ALPHA)
{
if (xx < firstPixel)
firstPixel = xx;
if (xx > lastPixel)
lastPixel = xx;
}
}
if (lastPixel == 0)
{
noPaddingSpecified = true;
}
rightStart = firstPixel;
rightEnd = lastPixel;
//.........这里部分代码省略.........