void SetImagePadding(int drawableWidth)
{
var button = this.Control as Android.Widget.Button;
Android.Graphics.Rect bounds = new Android.Graphics.Rect();
Paint p = button.Paint;
float textWidth = 0;
if (!string.IsNullOrWhiteSpace(Element.Text))
{
p.GetTextBounds(Element.Text, 0, Element.Text.Length, bounds);
textWidth = p.MeasureText(Element.Text);
}
var paddingRight = BaseUIHelper.ConvertDPToPixels(BaseElement.Padding.Right);
var left = Control.MeasuredWidth - ((Control.MeasuredWidth + textWidth + drawableWidth) / 2 + paddingRight);
if (textWidth > 0)
{
left /= 2;
}
if (BaseElement.Padding.Top > 0 || BaseElement.Padding.Bottom > 0)
{
Control.SetPadding((int)left, (int)BaseElement.Padding.Top, (int)left, (int)BaseElement.Padding.Bottom);
}
else
{
Control.SetPadding((int)left, Control.PaddingTop, (int)left, Control.PaddingBottom);
}
}
public Bitmap GetBitmapMarker(Context mContext, int resourceId, string text)
{
Resources resources = mContext.Resources;
float scale = resources.DisplayMetrics.Density;
Bitmap bitmap = BitmapFactory.DecodeResource(resources, resourceId);
Bitmap.Config bitmapConfig = bitmap.GetConfig();
// set default bitmap config if none
if (bitmapConfig == null)
bitmapConfig = Bitmap.Config.Argb8888;
bitmap = bitmap.Copy(bitmapConfig, true);
Canvas canvas = new Canvas(bitmap);
Paint paint = new Paint(PaintFlags.AntiAlias);
paint.Color = global::Android.Graphics.Color.Black;
paint.TextSize = ((int)(14 * scale));
paint.SetShadowLayer(1f, 0f, 1f, global::Android.Graphics.Color.White);
// draw text to the Canvas center
Rect bounds = new Rect();
paint.GetTextBounds(text, 0, text.Length, bounds);
int x = (bitmap.Width - bounds.Width()) / 2;
int y = (bitmap.Height + bounds.Height()) / 2 - 20;
canvas.DrawText(text, x, y, paint);
return bitmap;
}
public override void GetItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state)
{
outRect.Left = left;
outRect.Top = top;
outRect.Right = right;
outRect.Bottom = bottom;
}
protected override void OnFocusChanged(bool gainFocus, Android.Views.FocusSearchDirection direction, Rect previouslyFocusedRect)
{
if (gainFocus)
{
base.OnFocusChanged(true, direction, previouslyFocusedRect);
}
}
//http://egoco.de/post/19077604048/calculating-the-height-of-text-in-android
//http://stackoverflow.com/questions/16082359/how-to-auto-adjust-text-size-on-a-multi-line-textview-according-to-the-view-max
public SizeF MeasureString(string text, int maxWidth = 2147483647)
{
TextPaint paint = AndroidBrush.CreateTextPaint();
paint.TextSize = SizeInPoints;
paint.SetTypeface(InnerFont);
int lineCount = 0;
int index = 0;
int length = text.Length;
float[] measuredWidths = new float[]{ 0 };
float measuredWidth = 1f;
while(index < length - 1)
{
index += paint.BreakText(text, index, length, true, maxWidth, measuredWidths);
lineCount++;
if (measuredWidth < measuredWidths[0]) measuredWidth = measuredWidths[0];
}
Rect bounds = new Rect();
paint.GetTextBounds("Py", 0, 2, bounds);
float height = (float)System.Math.Floor((double)lineCount * bounds.Height());
return new SizeF (measuredWidth, height);
}
/// <summary>
/// This method will determine the scaling ratio for the image view.
/// </summary>
/// <param name="startBounds">The visible rectangle of the thumbnail.</param>
/// <param name="finalBounds">The visible rectangle of the expanded image view.</param>
/// <returns></returns>
private static float CalculateStartScale(Rect startBounds, Rect finalBounds)
{
float startScale;
// First figure out width-to-height ratio of each rectangle.
float finalBoundsRatio = finalBounds.Width() / (float)finalBounds.Height();
float startBoundsRatio = startBounds.Width() / (float)startBounds.Height();
if (finalBoundsRatio > startBoundsRatio)
{
// Extend start bounds horizontally
startScale = (float)startBounds.Height() / finalBounds.Height();
float startWidth = startScale * finalBounds.Width();
float deltaWidth = (startWidth - startBounds.Width()) / 2;
startBounds.Left -= (int)deltaWidth;
startBounds.Right += (int)deltaWidth;
}
else
{
// Extend start bounds vertically
startScale = (float)startBounds.Width() / finalBounds.Width();
float startHeight = startScale * finalBounds.Height();
float deltaHeight = (startHeight - startBounds.Height()) / 2;
startBounds.Top -= (int)deltaHeight;
startBounds.Bottom += (int)deltaHeight;
}
return startScale;
}
public override void Draw(Canvas canvas)
{
var box = Element as RoundBoxView;
var rect = new Rect();
var color = box.BorderColor != Color.White ? box.BorderColor.ToAndroid() : box.BackgroundColor.ToAndroid();
var paint = new Paint
{
Color = color,
AntiAlias = true
};
GetDrawingRect(rect);
var radius = (float)(rect.Width() / 14 * 8); // ... / box width * box corner radius
canvas.DrawRoundRect(new RectF(rect), radius, radius, paint);
if (box.BorderThickness <= 0)
{
return;
}
var diameter = rect.Width() - box.BorderThickness;
var rect1 = new Rect(box.BorderThickness, box.BorderThickness, diameter, diameter);
var paint1 = new Paint
{
Color = box.BackgroundColor.ToAndroid(),
AntiAlias = true
};
canvas.DrawRoundRect(new RectF(rect1), radius, radius, paint1);
}
public void Run()
{
Rect dstRect = new Rect();
long startTime = Java.Lang.System.NanoTime();
while (running)
{
if (!holder.GetSurface().IsValid())
continue;
float deltaTime = (Java.Lang.System.NanoTime() - startTime) / 10000000.000f;
startTime = Java.Lang.System.NanoTime();
if (deltaTime > 3.15)
{
deltaTime = (float)3.15;
}
game.getCurrentScreen().update(deltaTime);
game.getCurrentScreen().paint(deltaTime);
Canvas canvas = holder.LockCanvas();
canvas.GetClipBounds(dstRect);
canvas.DrawBitmap(framebuffer, null, dstRect, null);
holder.UnlockCanvasAndPost(canvas);
}
}
void AdjustHorizontalScroll(int index, ScrollToPosition scrollToPosition)
{
_pendingScrollAdjustment = null;
var viewRect = GetViewRect(index);
if (viewRect == null)
{
return;
}
var offset = 0;
var rvRect = new ARect();
_recyclerView.GetGlobalVisibleRect(rvRect);
if (scrollToPosition == ScrollToPosition.Center)
{
offset = viewRect.CenterX() - rvRect.CenterX();
}
else if (scrollToPosition == ScrollToPosition.End)
{
offset = viewRect.Right - rvRect.Right;
}
_recyclerView.ScrollBy(offset, 0);
}
// If you would like to create a circle of the image set pixels to half the width of the image.
internal static Bitmap GetRoundedCornerBitmap(Bitmap bitmap, int pixels)
{
Bitmap output = null;
try
{
output = Bitmap.CreateBitmap(bitmap.Width, bitmap.Height, Bitmap.Config.Argb8888);
Canvas canvas = new Canvas(output);
Color color = new Color(66, 66, 66);
Paint paint = new Paint();
Rect rect = new Rect(0, 0, bitmap.Width, bitmap.Height);
RectF rectF = new RectF(rect);
float roundPx = pixels;
paint.AntiAlias = true;
canvas.DrawARGB(0, 0, 0, 0);
paint.Color = color;
canvas.DrawRoundRect(rectF, roundPx, roundPx, paint);
paint.SetXfermode(new PorterDuffXfermode(PorterDuff.Mode.SrcIn));
canvas.DrawBitmap(bitmap, rect, rect, paint);
}
catch (System.Exception err)
{
System.Console.WriteLine ("GetRoundedCornerBitmap Error - " + err.Message);
}
return output;
}
private void MeasureLayout(PopupWindow sender)
{
// We can obtain the size of keyboard by comparing the layout of two popup windows
// where one (AdjustResize) resizes to keyboard and one(AdjustNothing) that doesn't:
// [size] realMetrics : screen
// [rect] adjustNothingFrame : screen - (top: status_bar) - (bottom: nav_bar)
// [rect] adjustResizeFrame : screen - (top: status_bar) - (bottom: keyboard + nav_bar)
var realMetrics = Get <DisplayMetrics>(_activity.WindowManager.DefaultDisplay.GetRealMetrics);
var adjustNothingFrame = Get <Rect>(_adjustNothingLayoutProvider.ContentView.GetWindowVisibleDisplayFrame);
var adjustResizeFrame = Get <Rect>(_adjustResizeLayoutProvider.ContentView.GetWindowVisibleDisplayFrame);
StatusBarRect = new Rect(0, 0, realMetrics.WidthPixels, adjustNothingFrame.Top);
KeyboardRect = new Rect(0, adjustResizeFrame.Bottom, realMetrics.WidthPixels, adjustNothingFrame.Bottom);
NavigationBarRect = new Rect(0, adjustNothingFrame.Bottom, realMetrics.WidthPixels, realMetrics.HeightPixels);
LayoutChanged?.Invoke(StatusBarRect, KeyboardRect, NavigationBarRect);
T Get <T>(Action <T> getter) where T : new()
{
var result = new T();
getter(result);
return(result);
}
}
public override void GetItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state)
{
if (parent.GetChildLayoutPosition(view) != 0)
{
outRect.Top = space;
}
}
protected override void OnDraw(Canvas canvas)
{
base.OnDraw (canvas);
var r = new Rect ();
this.GetLocalVisibleRect (r);
var half = r.Width() / 2;
var height = r.Height();
var percentage = (this.Limit - Math.Abs(this.CurrentValue)) / this.Limit;
var paint = new Paint()
{
Color = this.CurrentValue < 0 ? this.negativeColor : this.positiveColor,
StrokeWidth = 5
};
paint.SetStyle(Paint.Style.Fill);
if (this.CurrentValue < 0)
{
var start = (float)percentage * half;
var size = half - start;
canvas.DrawRect (new Rect ((int)start, 0, (int)(start + size), height), paint);
}
else
{
canvas.DrawRect (new Rect((int)half, 0, (int)(half + percentage * half), height), paint);
}
}
static Bitmap GetCroppedBitmap (Bitmap bmp, int radius)
{
Bitmap sbmp;
if (bmp.Width != radius || bmp.Height != radius)
sbmp = Bitmap.CreateScaledBitmap (bmp, radius, radius, false);
else
sbmp = bmp;
var output = Bitmap.CreateBitmap (sbmp.Width,
sbmp.Height, Bitmap.Config.Argb8888);
var canvas = new Canvas (output);
var paint = new Paint ();
var rect = new Rect (0, 0, sbmp.Width, sbmp.Height);
paint.AntiAlias = true;
paint.FilterBitmap = true;
paint.Dither = true;
canvas.DrawARGB (0, 0, 0, 0);
paint.Color = Color.ParseColor ("#BAB399");
canvas.DrawCircle (sbmp.Width / 2 + 0.7f, sbmp.Height / 2 + 0.7f,
sbmp.Width / 2 + 0.1f, paint);
paint.SetXfermode (new PorterDuffXfermode (PorterDuff.Mode.SrcIn));
canvas.DrawBitmap (sbmp, rect, rect, paint);
return output;
}
static View GetFrontmostChildAt(ViewGroup viewGroup, int x, int y)
{
var locArray = new int[2];
for (int i = viewGroup.ChildCount - 1; i >= 0; i--)
{
var child = viewGroup.GetChildAt(i);
child.GetLocationOnScreen(locArray);
var frame = new AG.Rect(
locArray [0],
locArray [1],
locArray [0] + child.Width,
locArray [1] + child.Height);
if (!frame.Contains(x, y))
{
continue;
}
var childGroup = child as ViewGroup;
if (childGroup != null)
{
var grandChild = GetFrontmostChildAt(childGroup, x, y);
if (grandChild != null)
{
return(grandChild);
}
}
return(child);
}
return(null);
}
void AdjustVerticalScroll(int index, ScrollToPosition scrollToPosition)
{
_pendingScrollAdjustment = null;
var viewRect = GetViewRect(index);
if (viewRect == null)
{
return;
}
var offset = 0;
var rvRect = new ARect();
_recyclerView.GetGlobalVisibleRect(rvRect);
if (scrollToPosition == ScrollToPosition.Center)
{
offset = viewRect.CenterY() - rvRect.CenterY();
}
else if (scrollToPosition == ScrollToPosition.End)
{
offset = viewRect.Bottom - rvRect.Bottom;
}
_recyclerView.ScrollBy(0, offset);
}
public override void Draw(Canvas canvas)
{
RoundedBoxView rbv = (RoundedBoxView)this.Element;
Rect rc = new Rect();
GetDrawingRect(rc);
Rect interior = rc;
interior.Inset((int)rbv.BorderThickness, (int)rbv.BorderThickness);
Paint p = new Paint()
{
Color = rbv.BackgroundColor.ToAndroid(),
AntiAlias = true,
};
var radius = (float)(rc.Width() / rbv.Width * rbv.CornerRadius);
//canvas.DrawRoundRect(new RectF(interior), (float)rbv.CornerRadius, (float)rbv.CornerRadius, p);
canvas.DrawRoundRect(new RectF(interior), radius, radius, p);
// Draw border
if (rbv.BorderThickness > 0)
{
p.Color = rbv.BorderColor.ToAndroid();
p.StrokeWidth = (float)rbv.BorderThickness;
p.SetStyle(Paint.Style.Stroke);
//canvas.DrawRoundRect(new RectF(rc), (float)rbv.CornerRadius, (float)rbv.CornerRadius, p);
canvas.DrawRoundRect(new RectF(rc), radius, radius, p);
}
}
public static Bitmap getRoundedCroppedBitmap(Bitmap bitmap, int radius) {
Bitmap finalBitmap;
if (bitmap.Width != radius || bitmap.Height!= radius)
finalBitmap = Bitmap.CreateScaledBitmap(bitmap, radius, radius,
false);
else
finalBitmap = bitmap;
Bitmap output = Bitmap.CreateBitmap(finalBitmap.Width,
finalBitmap.Height, Bitmap.Config.Argb8888);
Canvas canvas = new Canvas(output);
Paint paint = new Paint();
Rect rect = new Rect(0, 0, finalBitmap.Width,
finalBitmap.Height);
paint.AntiAlias=true;
paint.FilterBitmap=true;
paint.Dither=true;
canvas.DrawARGB(0, 0, 0, 0);
paint.Color=Color.ParseColor("#BAB399");
canvas.DrawCircle(finalBitmap.Width / 2 + 0.7f,
finalBitmap.Height / 2 + 0.7f,
finalBitmap.Width / 2 + 0.1f, paint);
paint.SetXfermode(new PorterDuffXfermode(PorterDuff.Mode.SrcIn));
canvas.DrawBitmap(finalBitmap, rect, rect, paint);
return output;
}
Bitmap CreateRoundImage(Bitmap image)
{
var clipArea = Bitmap.CreateBitmap(image.Width, image.Height, Bitmap.Config.Argb8888);
var canvas = new Canvas(clipArea);
var paint = new Paint(PaintFlags.AntiAlias);
canvas.DrawARGB(0, 0, 0, 0);
canvas.DrawRoundRect(new RectF(0, 0, image.Width, image.Height), _iconRadius, _iconRadius, paint);
paint.SetXfermode(new PorterDuffXfermode(PorterDuff.Mode.SrcIn));
var rect = new Android.Graphics.Rect(0, 0, image.Width, image.Height);
canvas.DrawBitmap(image, rect, rect, paint);
image.Recycle();
image.Dispose();
image = null;
canvas.Dispose();
canvas = null;
paint.Dispose();
paint = null;
rect.Dispose();
rect = null;
return(clipArea);
}
public WrapperView(Context context)
: base(context)
{
_viewBounds = new Android.Graphics.Rect();
SetClipChildren(false);
SetWillNotDraw(true);
}
public BitmapDrawable(Resources resources, int id, double left, double top, double right, double bottom)
{
mBitmap = BitmapFactory.DecodeResource(resources, id, new BitmapFactory.Options {
InDither = false,
InPreferredConfig = Bitmap.Config.Argb8888
});
mBounds = new Rect((int)left, (int)top, (int)right, (int)bottom);
}
public void PushClip(Rectangle clip)
{
Rect oldClip = new Rect();
this.canvas.GetClipBounds(oldClip);
clipStack.Push(new RectF(oldClip));
this.canvas.ClipRect((RectF)clip, Region.Op.Intersect);
}
public override void GetItemOffsets (Rect outRect, View view, RecyclerView parent, RecyclerView.State state)
{
if (orientation == VerticalList) {
outRect.Set (0, 0, 0, divider.IntrinsicHeight);
} else {
outRect.Set (0, 0, divider.IntrinsicWidth, 0);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="CanvasRenderContext" /> class.
/// </summary>
/// <param name="scale">The scale.</param>
public CanvasRenderContext(double scale)
{
this.paint = new Paint();
this.path = new Path();
this.bounds = new Rect();
this.pts = new List<float>();
this.Scale = scale;
}
protected override void OnBoundsChange (Rect bounds)
{
base.OnBoundsChange (bounds);
if (oval == null)
return;
oval.Set (0, 0, bounds.Width (), bounds.Height ());
}
// we need this constructor for LayoutInflater
public LinedEditText (Context context, IAttributeSet attrs)
: base (context, attrs)
{
rect = new Rect ();
paint = new Paint ();
paint.SetStyle (Android.Graphics.Paint.Style.Stroke);
paint.Color = Color.LightGray;
}
/// <summary>
/// Determines whether the specified point is hit.
/// </summary>
/// <param name="view">The view.</param>
/// <param name="point">The point.</param>
/// <returns><c>true</c> if the specified point is hit; otherwise, <c>false</c>.</returns>
public static bool IsHit(this Android.Views.View view, PointF point)
{
var r = new Rect();
view.GetHitRect(r);
var touch = new Rect((int)point.X, (int)point.Y, (int)point.X, (int)point.Y);
return r.Intersect(touch);
}
public Collider(int leftOffset, int rightOffset, int topOffset, int bottomOffset)
{
this.leftOffset = leftOffset;
this.rightOffset = rightOffset;
this.topOffset = topOffset;
this.bottomOffset = bottomOffset;
Boundary = new Rect (0, 0, 0, 0);
}
protected override bool SetFrame (int l, int t, int r, int b)
{
bool changed = base.SetFrame(l, t, r, b);
mBounds = new Rect(0, 0, r - l, b - t);
mBoundsF = new RectF(mBounds);
mBorderDrawable.Bounds = mBounds;
mMaskDrawable.Bounds = mBounds;
return changed;
}
public SvgPath (Path path, Paint paint)
{
this.path = path;
this.paint = paint;
measure = new PathMeasure (path, false);
length = measure.Length;
region.SetPath (path, maxClip);
bounds = region.Bounds;
}
public Projectile(int x, int y)
{
_x = x + xOFFSET;
_y = y + yOFFSET;
_speedX = 7;
_visible = true;
boundary = new Rect ();
}
public Projectile(int startX, int startY)
{
x = startX;
y = startY;
speedX = 7;
visible = true;
r = new Rect(0, 0, 0, 0);
}
private int computeUsableHeight()
{
Rect r = new Rect();
mChildOfContent.GetWindowVisibleDisplayFrame(r);
if (Build.VERSION.SdkInt < BuildVersionCodes.Lollipop)
{
return (r.Bottom - r.Top);
}
return r.Bottom;
}
protected override void OnBoundsChange (Rect bounds)
{
var width = bounds.Width ();
var height = bounds.Height ();
if (width <= 0 || height <= 0)
return;
if (Picture != null && (currentBitmap == null || currentBitmap.Height != height || currentBitmap.Width != width))
currentBitmap = SvgFactory.MakeBitmapFromPicture(Picture, width, height);
}
public override void GetItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state)
{
base.GetItemOffsets(outRect, view, parent, state);
if (this.GetOrientation(parent) == LinearLayoutManager.Vertical)
{
outRect.Set(0, 0, 0, this.divider.IntrinsicHeight);
} else {
outRect.Set(0, 0, this.divider.IntrinsicWidth, 0);
}
}
public Size Measure(FormattedText formattedText)
{
var paint = new Paint();
var rect = new Rect();
paint.GetTextBounds(formattedText.Text, 0, formattedText.Text.Length, rect);
return(new Size(rect.Width(), rect.Height()));
}
public override void GetItemOffsets(ARect outRect, AView view, RecyclerView parent, RecyclerView.State state)
{
base.GetItemOffsets(outRect, view, parent, state);
if (_adjustedVerticalSpacing == -1)
{
_adjustedVerticalSpacing = parent.Context.ToPixels(_verticalSpacing);
}
if (_adjustedHorizontalSpacing == -1)
{
_adjustedHorizontalSpacing = parent.Context.ToPixels(_horizontalSpacing);
}
var itemViewType = parent.GetChildViewHolder(view).ItemViewType;
if (itemViewType == ItemViewType.Header)
{
outRect.Bottom = (int)_adjustedVerticalSpacing;
return;
}
if (itemViewType == ItemViewType.Footer)
{
return;
}
var spanIndex = 0;
if (view.LayoutParameters is GridLayoutManager.LayoutParams gridLayoutParameters)
{
spanIndex = gridLayoutParameters.SpanIndex;
}
if (_orientation == ItemsLayoutOrientation.Vertical)
{
outRect.Left = spanIndex == 0 ? 0 : (int)_adjustedHorizontalSpacing;
if (parent.GetChildAdapterPosition(view) != parent.GetAdapter().ItemCount - 1)
{
outRect.Bottom = (int)_adjustedVerticalSpacing;
}
}
if (_orientation == ItemsLayoutOrientation.Horizontal)
{
outRect.Top = spanIndex == 0 ? 0 : (int)_adjustedVerticalSpacing;
if (parent.GetChildAdapterPosition(view) != parent.GetAdapter().ItemCount - 1)
{
outRect.Right = (int)_adjustedHorizontalSpacing;
}
}
}
public override void GetItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state)
{
base.GetItemOffsets(outRect, view, parent, state);
var layoutManager = (StaggeredGridLayoutManager)parent.GetLayoutManager();
int position = parent.GetChildAdapterPosition(view);
if (position < layoutManager.SpanCount)
{
outRect.Top = headerView.heightHeader;
}
}
public override void GetItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state)
{
var holder = parent.GetChildViewHolder(view) as ViewHolder;
if (!CellIsVisible(holder?.RowInfo.Cell))
{
return;
}
outRect.Set(0, _drawable.IntrinsicHeight, 0, 0);
}
public override void GetOutline(Android.Views.View view, Outline outline)
{
float scale = view.Resources.DisplayMetrics.Density;
double width = (double)element.GetValue(VisualElement.WidthProperty) * scale;
double height = (double)element.GetValue(VisualElement.HeightProperty) * scale;
float minDimension = (float)Math.Min(height, width);
float radius = minDimension / 2f;
var rect = new Android.Graphics.Rect(0, 0, (int)width, (int)height);
outline.SetRoundRect(rect, radius);
}
protected override void OnBoundsChange(Rect bounds)
{
base.OnBoundsChange(bounds);
var height = Bounds.Height();
var width = Bounds.Width();
_numRectanglesHorizontal = (int)Math.Ceiling((double) (width / _rectangleSize));
_numRectanglesVertical = (int)Math.Ceiling((double) (height / _rectangleSize));
GeneratePatternBitmap();
}
Rect GetFramingRect(Canvas canvas)
{
int width = canvas.Width * 15 / 16;
int height = canvas.Height * 4/ 10;
int leftOffset = (canvas.Width - width) / 2;
int topOffset = (canvas.Height - height) / 2;
var framingRect = new Rect(leftOffset, topOffset, leftOffset + width, topOffset + height);
return framingRect;
}
public Tile(int x, int y, TileType type, Background bg, Robot robot)
{
this._x = x * 40;
this._y = y * 40;
this._bg = bg;
this.robot = robot;
boundary = new Rect ();
this.Type = type;
findPicture ();
}
public override void Draw(Canvas canvas)
{
Rect bounds = Bounds;
int height = bounds.Height();
paint.TextSize = height;
Rect textBounds = new Rect();
string textValue = icon.Character.ToString();
paint.GetTextBounds(textValue, 0, 1, textBounds);
int textHeight = textBounds.Height();
float textBottom = bounds.Top + (height - textHeight) / 2f + textHeight - textBounds.Bottom;
canvas.DrawText(textValue, bounds.ExactCenterX(), textBottom, paint);
}
/// <summary>
/// get the height of the the string
/// </summary>
/// <param name="text">the string to measure</param>
/// <param name="fontSize">the font size of the displayed string</param>
/// <returns>the height of the measured string</returns>
public static double TextHeightNative(string text, float fontSize)
{
Graphics.Rect bounds = new Graphics.Rect();
TextView textView = new TextView(Native.Application.Context)
{
TextSize = fontSize
};
textView.Paint.GetTextBounds(text.ToCharArray(), 0, text.Length, bounds);
var height = bounds.Height();
return(height / Resources.System.DisplayMetrics.ScaledDensity);
}
protected override void OnBoundsChange(Android.Graphics.Rect bounds)
{
base.OnBoundsChange(bounds);
if (this.element.Width >= 0 && this.element.Height >= 0 && (this.element.Width != this.lastWidth || this.element.Height != this.lastHeight))
{
this.lastWidth = this.element.Width;
this.lastHeight = this.element.Height;
this.drawingBrush.SetSize(this.element.Width, this.element.Height);
this.UpdateSize(element.Width, element.Height);
this.UpdateShape(this.drawingBrush.Geometry.ToAPath(this.view.Context));
}
}
private void MeasureLayout(PopupWindow sender)
{
#pragma warning disable 618
// We can obtain the size of keyboard by comparing the layout of two popup windows
// where one (AdjustResize) resizes to keyboard and one(AdjustNothing) that doesn't:
// [size] realMetrics : screen
// [size] metrics : screen - dead zones
// [rect] displayRect : screen - (bottom: nav_bar)
// [rect] adjustNothingFrame : screen - (top: status_bar) - (bottom: nav_bar)
// [rect] adjustResizeFrame : screen - (top: status_bar) - (bottom: keyboard + nav_bar)
var realMetrics = Get <DisplayMetrics>(_activity.WindowManager.DefaultDisplay.GetRealMetrics);
var metrics = Get <DisplayMetrics>(_activity.WindowManager.DefaultDisplay.GetMetrics);
var displayRect = Get <Rect>(_activity.WindowManager.DefaultDisplay.GetRectSize);
var adjustNothingFrame = Get <Rect>(_adjustNothingLayoutProvider.ContentView.GetWindowVisibleDisplayFrame);
var adjustResizeFrame = Get <Rect>(_adjustResizeLayoutProvider.ContentView.GetWindowVisibleDisplayFrame);
#pragma warning restore 618
var orientation = DisplayInformation.GetForCurrentView().CurrentOrientation;
StatusBarRect = new Rect(0, 0, realMetrics.WidthPixels, adjustNothingFrame.Top);
KeyboardRect = new Rect(0, adjustResizeFrame.Bottom, realMetrics.WidthPixels, adjustNothingFrame.Bottom);
switch (orientation)
{
case DisplayOrientations.Landscape:
NavigationBarRect = new Rect(0, 0, metrics.WidthPixels - displayRect.Width(), metrics.HeightPixels);
break;
case DisplayOrientations.LandscapeFlipped:
NavigationBarRect = new Rect(adjustNothingFrame.Width(), 0, metrics.WidthPixels - displayRect.Width(), metrics.HeightPixels);
break;
// Miss portrait flipped
case DisplayOrientations.Portrait:
default:
NavigationBarRect = new Rect(0, adjustNothingFrame.Bottom, realMetrics.WidthPixels, realMetrics.HeightPixels);
break;
}
LayoutChanged?.Invoke(StatusBarRect, KeyboardRect, NavigationBarRect);
T Get <T>(Action <T> getter) where T : new()
{
var result = new T();
getter(result);
return(result);
}
}
public Size Measure(FormattedText formattedText)
{
var paint = new Paint();
var rect = new Rect();
paint.TextSize = formattedText.FontSize;
paint.GetTextBounds(formattedText.Text, 0, formattedText.Text.Length, rect);
var descent = paint.Descent();
var height = rect.Height();
var width = rect.Width();
return(new Size(width, height + descent));
}
public SizeF MeasureString(Font font, string text)
{
if (string.IsNullOrEmpty(text)) // needed to avoid exception
{
return(SizeF.Empty);
}
var paint = GetTextPaint(font);
// See http://stackoverflow.com/questions/7549182/android-paint-measuretext-vs-gettextbounds
var bounds = new ag.Rect();
paint.GetTextBounds(text, 0, text.Length, bounds);
// TODO: see the above article; the width may be truncated to the nearest integer.
return(new SizeF(bounds.Width(), bounds.Height()));
}
ARect GetViewRect(int index)
{
var holder = _recyclerView.FindViewHolderForAdapterPosition(index);
var view = holder?.ItemView;
if (view == null)
{
return(null);
}
var viewRect = new ARect();
view.GetGlobalVisibleRect(viewRect);
return(viewRect);
}
private Android.Graphics.Rect GetScaledRect(int sourceHeight, int sourceWidth)
{
int height = 0;
int width = 0;
int top = 0;
int left = 0;
height = sourceHeight;
width = sourceWidth;
height = this.MakeSquare(height, ref width);
left = (int)((sourceWidth - width) / 2);
top = (int)((sourceHeight - height) / 2);
var rect = new Android.Graphics.Rect(left, top, width + left, height + top);
return(rect);
}
internal void DrawText(string text, Paint p, Typeface font, float size, Rectangle rect, ReoGridHorAlign halign, ReoGridVerAlign valign)
{
p.SetTypeface(font);
p.TextSize = size;
var measuredRect = new Rect();
p.GetTextBounds(text, 0, text.Length, measuredRect);
float x = rect.Left, y = rect.Top;
switch (halign)
{
case ReoGridHorAlign.General:
case ReoGridHorAlign.Left:
x = rect.Left;
break;
case ReoGridHorAlign.Center:
x = rect.Left + (rect.Width - measuredRect.Width()) / 2;
break;
case ReoGridHorAlign.Right:
x = rect.Right - measuredRect.Width();
break;
}
switch (valign)
{
case ReoGridVerAlign.Top:
y = rect.Top + measuredRect.Height();
break;
case ReoGridVerAlign.Middle:
y = rect.Bottom - (rect.Height - measuredRect.Height()) / 2;
break;
case ReoGridVerAlign.General:
case ReoGridVerAlign.Bottom:
y = rect.Bottom;
break;
}
this.canvas.DrawText(text, x, y, p);
}
public Bitmap CreateRoundImage(Bitmap image)
{
using ( image )
{
using var clipArea = Bitmap.CreateBitmap(image.Width, image.Height, Bitmap.Config.Argb8888 ?? throw new NullReferenceException(nameof(Bitmap.Config.Argb8888)));
using var canvas = new Canvas(clipArea ?? throw new NullReferenceException(nameof(clipArea)));
using var paint = new Paint(PaintFlags.AntiAlias);
canvas.DrawARGB(0, 0, 0, 0);
canvas.DrawRoundRect(new RectF(0, 0, image.Width, image.Height), _IconRadius, _IconRadius, paint);
paint.SetXfermode(new PorterDuffXfermode(PorterDuff.Mode.SrcIn));
using var rect = new Android.Graphics.Rect(0, 0, image.Width, image.Height);
canvas.DrawBitmap(image, rect, rect, paint);
return(clipArea);
}
}
protected override void OnDraw(Canvas canvas)
{
var frame = Element as CustomizedFrame;
var my1stPaint = new Android.Graphics.Paint();
var my2ndPaint = new Android.Graphics.Paint();
var backgroundPaint = new Android.Graphics.Paint();
my1stPaint.AntiAlias = true;
my1stPaint.SetStyle(Paint.Style.Stroke);
my1stPaint.StrokeWidth = frame.BorderWidth + 2;
my1stPaint.Color = frame.BorderColor.ToAndroid();
my2ndPaint.AntiAlias = true;
my2ndPaint.SetStyle(Paint.Style.Stroke);
my2ndPaint.StrokeWidth = frame.BorderWidth;
my2ndPaint.Color = frame.BackgroundColor.ToAndroid();
backgroundPaint.SetStyle(Paint.Style.Stroke);
backgroundPaint.StrokeWidth = 4;
backgroundPaint.Color = frame.BackgroundColor.ToAndroid();
Android.Graphics.Rect oldBounds = new Android.Graphics.Rect();
canvas.GetClipBounds(oldBounds);
RectF oldOutlineBounds = new RectF();
oldOutlineBounds.Set(oldBounds);
RectF myOutlineBounds = new RectF();
myOutlineBounds.Set(oldBounds);
myOutlineBounds.Top += (int)my2ndPaint.StrokeWidth + 3;
myOutlineBounds.Bottom -= (int)my2ndPaint.StrokeWidth + 3;
myOutlineBounds.Left += (int)my2ndPaint.StrokeWidth + 3;
myOutlineBounds.Right -= (int)my2ndPaint.StrokeWidth + 3;
canvas.DrawRoundRect(oldOutlineBounds, 10, 10, backgroundPaint); //to "hide" old outline
canvas.DrawRoundRect(myOutlineBounds, frame.CornerRadius, frame.CornerRadius, my1stPaint);
canvas.DrawRoundRect(myOutlineBounds, frame.CornerRadius, frame.CornerRadius, my2ndPaint);
base.OnDraw(canvas);
}
/// <summary>
/// Transforms ImageBrush's bitmap based on target bounds and shape, Stretch mode, and RelativeTransform, and draws it to the supplied canvas.
/// </summary>
/// <param name="destinationCanvas">The canvas to draw the final image on</param>
/// <param name="drawRect">The destination bounds</param>
/// <param name="maskingPath">An optional path to clip the bitmap by (eg an ellipse)</param>
internal void DrawBackground(Canvas destinationCanvas, Windows.Foundation.Rect drawRect, Path maskingPath = null)
{
var bitmap = ImageSource?.ImageData;
if (bitmap == null)
{
return;
}
//Create a temporary bitmap
var output = GetTransformedBitmap(drawRect, maskingPath);
var paint = new Paint();
//Draw the output bitmap to the screen
var rect = new Android.Graphics.Rect(0, 0, (int)drawRect.Width, (int)drawRect.Height);
destinationCanvas.DrawBitmap(output, rect, rect, paint);
}
public override void GetItemOffsets(ARect outRect, AView view, RecyclerView parent, RecyclerView.State state)
{
base.GetItemOffsets(outRect, view, parent, state);
if (Math.Abs(_adjustedVerticalSpacing - (-1)) < double.Epsilon)
{
_adjustedVerticalSpacing = parent.Context.ToPixels(_verticalSpacing);
}
if (Math.Abs(_adjustedHorizontalSpacing - (-1)) < double.Epsilon)
{
_adjustedHorizontalSpacing = parent.Context.ToPixels(_horizontalSpacing);
}
int position = parent.GetChildAdapterPosition(view);
int itemCount = parent.GetAdapter().ItemCount;
if (position == RecyclerView.NoPosition || itemCount == 0)
{
return;
}
if (_orientation == ItemsLayoutOrientation.Vertical)
{
var verticalInsets = parent.Context.ToPixels(_carouselView.PeekAreaInsets.Bottom + _carouselView.PeekAreaInsets.Top) / 2;
var finalVerticalSpacing = (int)(_adjustedVerticalSpacing - (_verticalSpacing * 2));
outRect.Left = position == 0 ? 0 : (int)_adjustedHorizontalSpacing;
outRect.Bottom = (position == (itemCount - 1) && verticalInsets > 0) ? ((int)Math.Ceiling(verticalInsets / 2) + finalVerticalSpacing) : finalVerticalSpacing;
outRect.Top = (position == 0 && verticalInsets > 0) ? ((int)Math.Ceiling(verticalInsets / 2) + finalVerticalSpacing) : finalVerticalSpacing;
}
if (_orientation == ItemsLayoutOrientation.Horizontal)
{
var horizontalInsets = parent.Context.ToPixels(_carouselView.PeekAreaInsets.Left + _carouselView.PeekAreaInsets.Right) / 2;
var finalHorizontalSpacing = (int)(_adjustedHorizontalSpacing - (_horizontalSpacing * 2));
outRect.Top = position == 0 ? 0 : (int)_adjustedVerticalSpacing;
outRect.Right = (position == (itemCount - 1) && horizontalInsets > 0) ? ((int)Math.Ceiling(horizontalInsets / 2) + finalHorizontalSpacing) : finalHorizontalSpacing;
outRect.Left = (position == 0 && horizontalInsets > 0) ? ((int)Math.Ceiling(horizontalInsets / 2) + finalHorizontalSpacing) : finalHorizontalSpacing;
}
}
protected override void Draw(Canvas canvas, Rect bounds)
{
int SaveCount = canvas.Save();
RectF arcBounds = mCurrentBounds;
arcBounds.Set(bounds);
//Draw background
canvas.DrawColor(new Color(mCurrentBackgroundColor));
//Draw reveal circle
if (mRevealCircleRadius > 0)
{
mPaint.Color = new Color(mCurrentBackgroundColor == mBackgroundColor ? mBackgroundDeepColor : mBackgroundColor);
canvas.DrawCircle(arcBounds.CenterX(), arcBounds.CenterY(), mRevealCircleRadius, mPaint);
}
//Draw mother oval
mPaint.Color = new Color(mCurrentOvalColor);
int motherSaveCount = canvas.Save();
canvas.Rotate(mRotateDegrees, mMotherPosition[0], mMotherPosition[1]);
canvas.DrawPath(CreateMotherPath(), mPaint);
canvas.DrawPath(CreateLinkPath(), mPaint);
canvas.RestoreToCount(motherSaveCount);
int childSaveCount = canvas.Save();
canvas.Rotate(mRotateDegrees, mChildPosition[0], mChildPosition[1]);
canvas.DrawPath(CreateChildPath(), mPaint);
canvas.RestoreToCount(childSaveCount);
canvas.RestoreToCount(SaveCount);
// canvas.DrawPath(mMotherMovePath, mPaint);
// canvas.DrawPath(mChildMovePath, mPaint);
// canvas.DrawLine(mMotherPosition[0], mMotherPosition[1], mChildPosition[0], mChildPosition[1], mPaint);
}
protected override void OnLayout(bool changed, int left, int top, int right, int bottom)
{
base.OnLayout(changed, left, top, right, bottom);
if (Window.Current == null)
{
// Do not calc keyboard height before window init, because we need to know pixel scale.
return;
}
var r = new Android.Graphics.Rect();
this.GetWindowVisibleDisplayFrame(r);
var totalHeight = bottom - top;
var visibleHeight = r.Bottom - r.Top;
if (visibleHeight == totalHeight)
{
androidSoftKeyboard.Height = 0;
}
else
{
androidSoftKeyboard.Height = totalHeight - visibleHeight;
}
}
public static Bitmap getCroppedBitmap(Bitmap bmp, int radius)
{
Bitmap sbmp;
if (bmp.Width != radius || bmp.Height != radius)
{
sbmp = Bitmap.CreateScaledBitmap(bmp, radius, radius, false);
}
else
{
sbmp = bmp;
}
Bitmap output = Bitmap.CreateBitmap(sbmp.Width, sbmp.Height, Bitmap.Config.Argb8888);
Canvas canvas = new Canvas(output);
Paint paint = new Paint();
paint.AntiAlias = true;
paint.FilterBitmap = true;
paint.Dither = true;
canvas.DrawARGB(0, 0, 0, 0);
paint.Color = Android.Graphics.Color.ParseColor("#000000");
canvas.DrawCircle(sbmp.Width / 2 + 0.0f, sbmp.Height / 2 + 0.0f, sbmp.Width / 2 + 0.0f, paint);
paint.SetXfermode(new PorterDuffXfermode(PorterDuff.Mode.SrcIn));
try
{
Android.Graphics.Rect rect = new Android.Graphics.Rect(0, 0, sbmp.Width, sbmp.Height);
//Rect rectDest = new Rect(0, 0, sbmp.Width, sbmp.Height);
canvas.DrawBitmap(sbmp, rect, rect, paint);
}
catch (System.Exception)
{
}
return(output);
}
protected override void OnFocusChanged(bool gainFocus, Views.FocusSearchDirection direction, Graphics.Rect previouslyFocusedRect)
{
base.OnFocusChanged(gainFocus, direction, previouslyFocusedRect);
if (gainFocus)
{
OnTextFieldClicked();
}
else
{
_dialog.Hide();
((IElementController)Element).SetValueFromRenderer(VisualElement.IsFocusedProperty, false);
Control.ClearFocus();
_dialog.CancelEvent -= OnCancelButtonClicked;
_dialog = null;
}
}
