public GdiPlusCanvasViewport(RootGraphic rootgfx,
Size viewportSize, int cachedPageNum)
: base(rootgfx, viewportSize, cachedPageNum)
{
quadPages = new QuadPages( cachedPageNum, viewportSize.Width, viewportSize.Height * 2);
this.CalculateCanvasPages();
}
/// <summary>
/// Measure the width and height of string <paramref name="str"/> when drawn on device context HDC
/// using the given font <paramref name="font"/>.<br/>
/// Restrict the width of the string and get the number of characters able to fit in the restriction and
/// the width those characters take.
/// </summary>
/// <param name="str">the string to measure</param>
/// <param name="font">the font to measure string with</param>
/// <param name="maxWidth">the max width to render the string in</param>
/// <param name="charFit">the number of characters that will fit under <see cref="maxWidth"/> restriction</param>
/// <param name="charFitWidth"></param>
/// <returns>the size of the string</returns>
public static Size MeasureString(char[] buff, int startAt, int len, RequestFont font, float maxWidth, out int charFit, out int charFitWidth)
{
//if (_useGdiPlusTextRendering)
//{
// ReleaseHdc();
// throw new NotSupportedException("Char fit string measuring is not supported for GDI+ text rendering");
//}
//else
//{
SetFont(font);
if (buff.Length == 0)
{
charFit = 0;
charFitWidth = 0;
return(Size.Empty);
}
var size = new PixelFarm.Drawing.Size();
unsafe
{
fixed(char *startAddr = &buff[0])
{
NativeTextWin32.UnsafeGetTextExtentExPoint(
win32MemDc.DC, startAddr + startAt, len,
(int)Math.Round(maxWidth), _charFit, _charFitWidth, ref size);
}
}
charFit = _charFit[0];
charFitWidth = charFit > 0 ? _charFitWidth[charFit - 1] : 0;
return(size);
//}
}
bool isClosed;//is this viewport closed
public CanvasViewport(RootGraphic rootgfx,
Size viewportSize, int cachedPageNum)
{
this.rootGraphics = rootgfx;
this.topWindowBox = rootgfx.TopWindowRenderBox;
this.viewportWidth = viewportSize.Width;
this.viewportHeight = viewportSize.Height;
canvasSizeChangedHandler = Canvas_SizeChanged;
viewportX = 0;
viewportY = 0;
}
public SkiaCanvasViewport(RootGraphic rootgfx,
Size viewportSize, int cachedPageNum)
: base(rootgfx, viewportSize, cachedPageNum)
{
this.CalculateCanvasPages();
mySkCanvas = new PixelFarm.Drawing.Skia.MySkiaCanvas(0, 0, 0, 0, internalSizeW, internalSizwH);
//TODO: review performance here
//review how to move data from unmanged(skia) to unmanaged(hdc's bitmap)
tmpBmp = new System.Drawing.Bitmap(internalSizeW, internalSizwH);
var bmpdata = tmpBmp.LockBits(
new System.Drawing.Rectangle(0, 0, internalSizeW, internalSizwH),
System.Drawing.Imaging.ImageLockMode.ReadOnly, tmpBmp.PixelFormat);
tmpBuffer = new byte[bmpdata.Stride * bmpdata.Height];
tmpBmp.UnlockBits(bmpdata);
}
protected void SetPostCalculateLayerContentSize(Size s)
{
ValidateCalculateContentSize();
postCalculateContentWidth = s.Width;
postCalculateContentHeight = s.Height;
}
// -----------------------
// Public Constructors
// -----------------------
/// <summary>
/// Rectangle Constructor
/// </summary>
///
/// <remarks>
/// Creates a Rectangle from Point and Size values.
/// </remarks>
public Rectangle(Point location, Size size)
{
x = location.X;
y = location.Y;
width = size.Width;
height = size.Height;
}
/// <summary>
/// Inflate Method
/// </summary>
///
/// <remarks>
/// Inflates the Rectangle by a specified Size.
/// </remarks>
public void Inflate(Size size)
{
x -= size.Width;
y -= size.Height;
Width += size.Width * 2;
Height += size.Height * 2;
}
/// <summary>
/// Measure the width and height of string <paramref name="str"/> when drawn on device context HDC
/// using the given font <paramref name="font"/>.<br/>
/// Restrict the width of the string and get the number of characters able to fit in the restriction and
/// the width those characters take.
/// </summary>
/// <param name="str">the string to measure</param>
/// <param name="font">the font to measure string with</param>
/// <param name="maxWidth">the max width to render the string in</param>
/// <param name="charFit">the number of characters that will fit under <see cref="maxWidth"/> restriction</param>
/// <param name="charFitWidth"></param>
/// <returns>the size of the string</returns>
public static Size MeasureString(char[] buff, int startAt, int len, RequestFont font, float maxWidth, out int charFit, out int charFitWidth)
{
//if (_useGdiPlusTextRendering)
//{
// ReleaseHdc();
// throw new NotSupportedException("Char fit string measuring is not supported for GDI+ text rendering");
//}
//else
//{
SetFont(font);
if (buff.Length == 0)
{
charFit = 0;
charFitWidth = 0;
return Size.Empty;
}
var size = new PixelFarm.Drawing.Size();
unsafe
{
fixed (char* startAddr = &buff[0])
{
NativeTextWin32.UnsafeGetTextExtentExPoint(
win32MemDc.DC, startAddr + startAt, len,
(int)Math.Round(maxWidth), _charFit, _charFitWidth, ref size);
}
}
charFit = _charFit[0];
charFitWidth = charFit > 0 ? _charFitWidth[charFit - 1] : 0;
return size;
//}
}
/// <summary>
/// Get top-left location to start drawing the image at depending on background-position value.
/// </summary>
/// <param name="backgroundPosition">the background-position value</param>
/// <param name="rectangle">the rectangle to position image in</param>
/// <param name="imgSize">the size of the image</param>
/// <returns>the top-left location</returns>
static Point GetLocation(CssLength posX, CssLength posY, RectangleF rectangle, Size imgSize)
{
int left = (int)rectangle.Left;
int top = (int)rectangle.Top;
if (posX.IsBackgroundPositionName)
{
switch (posX.UnitOrNames)
{
case CssUnitOrNames.LEFT:
{
left = (int)(rectangle.Left + .5f);
}
break;
case CssUnitOrNames.RIGHT:
{
left = (int)rectangle.Right - imgSize.Width;
}
break;
}
}
else
{
//not complete !
left = (int)(rectangle.Left + (rectangle.Width - imgSize.Width) / 2 + .5f);
}
if (posY.IsBackgroundPositionName)
{
switch (posY.UnitOrNames)
{
case CssUnitOrNames.TOP:
{
top = (int)rectangle.Top;
}
break;
case CssUnitOrNames.BOTTOM:
{
top = (int)rectangle.Bottom - imgSize.Height;
}
break;
}
}
else
{ //not complete !
top = (int)(rectangle.Top + (rectangle.Height - imgSize.Height) / 2 + .5f);
}
return new Point(left, top);
}
/// <summary>
/// Draw the background image at the required location repeating it over the X and Y axis.<br/>
/// Adjust location to left-top if starting location doesn't include all the range (adjusted to center or bottom/right).
/// </summary>
private static void DrawRepeat(Canvas g, Image img, RectangleF rectangle, Rectangle srcRect, Rectangle destRect, Size imgSize)
{
while (destRect.X > rectangle.X)
destRect.X -= imgSize.Width;
while (destRect.Y > rectangle.Y)
destRect.Y -= imgSize.Height;
//TODO: reimplement this again
//using (var brush = g.Platform.CreateTextureBrush(img, srcRect))
//{
// brush.TranslateTransform(destRect.X, destRect.Y);
// g.FillRectangle(brush, rectangle.X, rectangle.Y, rectangle.Width, rectangle.Height);
//}
}
