/// <summary>
/// Returns new dimensions of the image's bounding rect according to its parameters
/// </summary>
/// <param name="pict">Image reference</param>
/// <param name="rect">Image bounding rect</param>
/// <param name="ppos">Image alignment</param>
/// <param name="picw">New image's width value</param>
/// <param name="pich">New image's height value</param>
/// <param name="xoff">Image's X offset</param>
/// <param name="yoff">Image's Y offset</param>
/// <returns>true if successfull otherwise false</returns>
public bool GetImageDim(Image pict, RectangleF rect, ImageAlign ppos, ref float picw, ref float pich , ref float xoff , ref float yoff)
{
bool bOk = false;
int xc = 0, yc = 0;
try
{
if ( rect.Equals(RectangleF.Empty))
return false;
picw = 0;
pich = 0;
xoff =0;
yoff =0;
Graphics g = System.Drawing.Graphics.FromHwnd(GetActiveWindow());
setTransforms(g);
// get image logical size in document coordinates
RectangleF sizeDev = RectangleF.FromLTRB(0, 0,
(float)pict.Size.Width / pict.HorizontalResolution * g.DpiX * g.PageScale,
(float)pict.Size.Height / pict.VerticalResolution * g.DpiY * g.PageScale);
RectangleF sizeDoc = deviceToDoc(g, sizeDev);
picw = sizeDoc.Width;
pich = sizeDoc.Height;
switch (ppos)
{
case ImageAlign.TopLeft:
xoff = rect.Left;
yoff = rect.Top;
break;
case ImageAlign.BottomLeft:
xoff = rect.Left;
yoff = rect.Bottom - pich;
break;
case ImageAlign.TopRight:
xoff = rect.Right - picw;
yoff = rect.Top;
break;
case ImageAlign.BottomRight:
xoff = rect.Right - picw;
yoff = rect.Bottom - pich;
break;
case ImageAlign.Center:
xoff = (rect.Right + rect.Left - picw) / 2;
yoff = (rect.Bottom + rect.Top - pich) / 2;
break;
case ImageAlign.TopCenter:
xoff = rect.X + rect.Width / 2 - picw / 2;
yoff = rect.Y;
break;
case ImageAlign.BottomCenter:
xoff = rect.X + rect.Width / 2 - picw / 2;
yoff = rect.Bottom - pich;
break;
case ImageAlign.MiddleLeft:
xoff = rect.X;
yoff = rect.Y + rect.Height / 2 - pich / 2;
break;
case ImageAlign.MiddleRight:
xoff = rect.Right - picw;
yoff = rect.Y + rect.Height / 2 - pich / 2;
break;
case ImageAlign.Fit:
{
float h = rect.Bottom - rect.Top;
float w = rect.Right - rect.Left;
if (h == 0) break;
float ratioCtrl = w / h;
float ratioPic = picw / pich;
if (ratioCtrl > ratioPic)
{
//stretch vertically
pich = (int)h;
picw = (int)(ratioPic * pich);
yoff = rect.Top;
xoff = (rect.Right + rect.Left - picw) / 2;
}
else
{
//stretch horizontally
picw = (int)w;
if (ratioPic == 0) break;
pich = (int)(picw / ratioPic);
xoff = rect.Left;
yoff = (rect.Bottom + rect.Top - pich) / 2;
}
}
break;
case ImageAlign.Stretch:
{
picw = rect.Right - rect.Left;
pich = rect.Bottom - rect.Top;
xoff = rect.Left; yoff = rect.Top;
}
break;
case ImageAlign.Tile:
{
xoff = rect.Left; yoff = rect.Top;
xc = (int)((rect.Right - rect.Left) / picw) + 1;
yc = (int)((rect.Bottom - rect.Top) / pich) + 1;
}
break;
default:
return false;
}
PointF center = new PointF(
rect.X + rect.Width / 2,
rect.Y + rect.Height / 2);
bOk = true;
}
catch ( Exception ex )
{
Trace.WriteLine(String.Format("{0} error {1}\n","SvgManager.GetImageDim",ex.Message));
bOk = false;
}
return bOk;
}
public void ClipBoundsTest() {
Region r = new Region();
Assert.IsTrue(t.Graphics.ClipBounds.Equals(r.GetBounds(t.Graphics)));
RectangleF rf = new RectangleF(10, 10, 60, 60);
r = new Region(rf);
t.Graphics.Clip = r;
Assert.IsTrue(rf.Equals(t.Graphics.ClipBounds));
}
internal void drawingCanvas_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
{
if (e.Button == System.Windows.Forms.MouseButtons.Left)
{
Visible = false;
}
else
{
PointF[] ptArr = { new PointF(e.X, e.Y) };
canvas.CreateGraphicsWithWorldTransform().TransformPoints(CoordinateSpace.World, CoordinateSpace.Page, ptArr);
//canvas.MouseLocation = ptArr[0];
float gridSize = grid.GridSize;
PointF pos = new PointF((float)Math.Floor(ptArr[0].X / gridSize) * gridSize, (float)Math.Floor(ptArr[0].Y / gridSize) * gridSize);
RectangleF newMouseRectangle = new RectangleF(pos, new SizeF(gridSize, gridSize));
if (!newMouseRectangle.Equals(HighlightRectangle))
{
HighlightRectangle = newMouseRectangle;
((PictureBox)sender).Invalidate();
}
}
}
/// <summary>
/// Compares the imput rectangles and caculates the portion of the new rctangle not included in the old.
/// </summary>
/// <param name="current"> The current rectangle</param>
/// <param name="previous">The previous rectangle</param>
/// <returns>An array of rectangles describing the difference between the input rectangles.</returns>
/// <remarks>
/// This funtion is a liner exclusive OR on 2 rectangles. It is catagorized by specifying the order of the
/// rectangles in a linear fashion so that the xor'd intersection is directional. A natural XOR intersection
/// would include the portions of both rectangles not found the intersction of the two. A Linear XOR includes
/// only the portion of the current rectangle not found in the intersection of the two.
/// </remarks>
public static RectangleF[] GetRegionScans(RectangleF current, RectangleF previous)
{
// If the extents are equal, or one contains the other, or they're not intersecting there's nothing
// to do. Return the current rectangle.
if (
!current.Equals(previous) &&
!Contains(current, previous) &&
!Contains(previous, current) &&
IntersectsWith(current, previous))
{
// Get the horizontal rectangle, uncovered from a north or south pan
RectangleF h = RectangleFHelper.FromLTRB(
current.Left, //current.Left < previous.Left ? current.Left : previous.Left,
current.Top < previous.Top ? current.Top : previous.Bottom,
current.Right, //current.Left < previous.Left ? previous.Right : current.Right,
current.Top < previous.Top ? previous.Top : current.Bottom
);
// Get the vertical rectangle, uncovered from an east or west pan
RectangleF v = RectangleFHelper.FromLTRB(
current.Left < previous.Left ? current.Left : previous.Right,
current.Top < previous.Top ? previous.Top : current.Top,
current.Left < previous.Left ? previous.Left : current.Right,
current.Top < previous.Top ? current.Bottom : previous.Bottom
);
// Retangles with no width or height are excluded
if ((h.Height <= 0 || h.Width <= 0) && (v.Height <= 0 || v.Width <= 0))
return new RectangleF[] { current };
// Retangles with no width or height are excluded
if (h.Height <= 0 || h.Width <= 0)
return new RectangleF[] { v };
if (v.Height <= 0 || v.Width <= 0)
return new RectangleF[] { h };
return new RectangleF[] { h, v };
}
return new RectangleF[] { current };
}
public static UIImage ButtonImage(UIColor color, float cornerRadius, UIColor shadowColor, UIEdgeInsets shadowInsets)
{
UIImage topImage = FlatUI.Image(color, cornerRadius);
UIImage bottomImage = FlatUI.Image(shadowColor, cornerRadius);
float totalHeight = FlatUI.EdgeSize(cornerRadius) + shadowInsets.Top + shadowInsets.Bottom;
float totalWidth = FlatUI.EdgeSize(cornerRadius) + shadowInsets.Left + shadowInsets.Right;
float topWidth = FlatUI.EdgeSize(cornerRadius);
float topHeight = FlatUI.EdgeSize(cornerRadius);
RectangleF topRect = new RectangleF(shadowInsets.Left, shadowInsets.Top, topWidth, topHeight);
RectangleF bottomRect = new RectangleF(0, 0, totalWidth, totalHeight);
UIGraphics.BeginImageContextWithOptions(new SizeF(totalWidth, totalHeight), false, 0f);
if (!bottomRect.Equals(topRect))
bottomImage.Draw(bottomRect);
topImage.Draw(topRect);
UIImage buttonImage = UIGraphics.GetImageFromCurrentImageContext();
UIEdgeInsets resizeableInsets = new UIEdgeInsets(cornerRadius + shadowInsets.Top,
cornerRadius + shadowInsets.Left,
cornerRadius + shadowInsets.Bottom,
cornerRadius + shadowInsets.Right);
UIGraphics.EndImageContext();
return buttonImage.CreateResizableImage(resizeableInsets);
}
private void RelayoutItemsAnimated(bool animated)
{
//Console.WriteLine ("Relayout animated " + animated);
RelayoutBlock layoutBlock = delegate
{
ItemSubviews.EnumerateGridCells(delegate(GridViewCell view,out bool stop)
{
stop=false;
if (view != sortMovingItem && view != transformingItem)
{
int index = view.Tag - kTagOffset;
PointF origin = layoutStrategy.OriginForItemAtPosition(index);
RectangleF newFrame = new RectangleF(origin.X, origin.Y, itemSize.Width, itemSize.Height);
// IF statement added for performance reasons (Time Profiling in instruments)
if (!newFrame.Equals(view.Frame))
{
view.Frame = newFrame;
}
}
});
};
if (animated)
{
UIView.Animate(kDefaultAnimationDuration,0,kDefaultAnimationOptions,
delegate
{
layoutBlock();
},
delegate
{
});
}
else
{
layoutBlock();
}
}
