public MyZXingOverlay()
{
BindingContext = this;
//ColumnSpacing = 0;
VerticalOptions = LayoutOptions.FillAndExpand;
HorizontalOptions = LayoutOptions.FillAndExpand;
RowDefinitions.Add(new RowDefinition {
Height = new GridLength(1, GridUnitType.Star)
});
RowDefinitions.Add(new RowDefinition {
Height = new GridLength(3, GridUnitType.Star)
});
RowDefinitions.Add(new RowDefinition {
Height = new GridLength(2, GridUnitType.Star)
});
ColumnDefinitions.Add(new ColumnDefinition {
Width = new GridLength(1, GridUnitType.Star)
});
ColumnDefinitions.Add(new ColumnDefinition {
Width = new GridLength(1, GridUnitType.Star)
});
ColumnDefinitions.Add(new ColumnDefinition {
Width = new GridLength(1, GridUnitType.Star)
});
ColumnDefinitions.Add(new ColumnDefinition {
Width = new GridLength(1, GridUnitType.Star)
});
ColumnDefinitions.Add(new ColumnDefinition {
Width = new GridLength(1, GridUnitType.Star)
});
var boxview = new BoxView
{
VerticalOptions = LayoutOptions.Fill,
HorizontalOptions = LayoutOptions.FillAndExpand,
BackgroundColor = Color.Black,
Opacity = 0.7,
};
var boxview2 = new BoxView
{
VerticalOptions = LayoutOptions.Fill,
HorizontalOptions = LayoutOptions.FillAndExpand,
BackgroundColor = Color.Black,
Opacity = 0.7,
};
Children.Add(boxview, 0, 0);
Children.Add(boxview2, 0, 2);
SetColumnSpan(boxview, 5);
SetColumnSpan(boxview2, 5);
// Children.Add(boxview, 0, 3);
Children.Add(new BoxView
{
VerticalOptions = LayoutOptions.Fill,
HorizontalOptions = LayoutOptions.FillAndExpand,
BackgroundColor = Color.Black,
Opacity = 0.7,
}, 0, 1);
Children.Add(new BoxView
{
VerticalOptions = LayoutOptions.Fill,
HorizontalOptions = LayoutOptions.FillAndExpand,
BackgroundColor = Color.Black,
Opacity = 0.7,
}, 4, 1);
//Children.Add(new BoxView
//{
// VerticalOptions = LayoutOptions.Fill,
// HorizontalOptions = LayoutOptions.FillAndExpand,
// BackgroundColor = Color.Black,
// Opacity = 0.7,
//}, 0, 3);
//Children.Add(new BoxView
//{
// VerticalOptions = LayoutOptions.Fill,
// HorizontalOptions = LayoutOptions.FillAndExpand,
// BackgroundColor = Color.Black,
// Opacity = 0.7,
//}, 0, 2);
var AbsoluteLayouts = new AbsoluteLayout();
var redline = new Image
{
Source = "saomiao.png"
};
AbsoluteLayout.SetLayoutBounds(redline, new Rectangle(1, weizhi, 1, 1));
AbsoluteLayout.SetLayoutFlags(redline, AbsoluteLayoutFlags.SizeProportional);
AbsoluteLayouts.Children.Add(redline);
Children.Add(AbsoluteLayouts, 1, 1);
SetColumnSpan(AbsoluteLayouts, 3);
topText = new Label
{
VerticalOptions = LayoutOptions.Center,
HorizontalOptions = LayoutOptions.Center,
TextColor = Color.White,
AutomationId = "zxingDefaultOverlay_TopTextLabel",
};
topText.SetBinding(Label.TextProperty, new Binding(nameof(TopText)));
Children.Add(topText, 0, 0);
SetColumnSpan(topText, 5);
botText = new Label
{
VerticalOptions = LayoutOptions.Center,
HorizontalOptions = LayoutOptions.Center,
TextColor = Color.White,
AutomationId = "zxingDefaultOverlay_BottomTextLabel",
};
botText.SetBinding(Label.TextProperty, new Binding(nameof(BottomText)));
//Children.Add(botText, 0, 2);
//SetColumnSpan(botText, 5);
var MyStackLayout = new StackLayout
{
VerticalOptions = LayoutOptions.Center,
HorizontalOptions = LayoutOptions.Center
};
flash = new Button
{
VerticalOptions = LayoutOptions.Center,
HorizontalOptions = LayoutOptions.Center,
//HeightRequest = 3,
Text = "按钮",
TextColor = Color.White,
BackgroundColor = Color.Black,
Opacity = 0.7,
AutomationId = "zxingDefaultOverlay_FlashButton",
};
flash.SetBinding(Button.IsVisibleProperty, new Binding(nameof(ShowFlashButton)));
flash.SetBinding(Button.TextProperty, new Binding(nameof(ButtonText)));
flash.Clicked += (sender, e) =>
{
FlashButtonClicked?.Invoke(flash, e);
};
MyStackLayout.Children.Add(botText);
MyStackLayout.Children.Add(flash);
Children.Add(MyStackLayout, 0, 2);
SetColumnSpan(MyStackLayout, 5);
//this.ColumnSpacing = 0;
this.RowSpacing = 0;
Device.StartTimer(TimeSpan.FromSeconds(0.2), () =>
{
weizhi += 7;
AbsoluteLayout.SetLayoutBounds(redline, new Rectangle(1, weizhi, 1, 1));
if (weizhi > 150)
{
weizhi = -100;
}
return(true);
});
}
public ZXingOverlay()
{
BindingContext = this;
VerticalOptions = LayoutOptions.FillAndExpand;
HorizontalOptions = LayoutOptions.FillAndExpand;
// RowDefinitions - 4行
RowDefinitions.Add(new RowDefinition {
Height = 30
}); // *
RowDefinitions.Add(new RowDefinition {
Height = new GridLength(1, GridUnitType.Star)
}); // *
RowDefinitions.Add(new RowDefinition {
Height = new GridLength(3, GridUnitType.Star)
}); // 3*
RowDefinitions.Add(new RowDefinition {
Height = new GridLength(2, GridUnitType.Star)
}); // 2*
// ColumnDefinitions - 5列
ColumnDefinitions.Add(new ColumnDefinition {
Width = new GridLength(1, GridUnitType.Star)
}); // *
ColumnDefinitions.Add(new ColumnDefinition {
Width = new GridLength(1, GridUnitType.Star)
}); // *
ColumnDefinitions.Add(new ColumnDefinition {
Width = new GridLength(1, GridUnitType.Star)
}); // *
ColumnDefinitions.Add(new ColumnDefinition {
Width = new GridLength(1, GridUnitType.Star)
}); // *
ColumnDefinitions.Add(new ColumnDefinition {
Width = new GridLength(1, GridUnitType.Star)
}); // *
this.RowSpacing = 0;
this.ColumnSpacing = 0;
#region BoxView - Black
var bv_Top_Black = new BoxView
{
VerticalOptions = LayoutOptions.Fill,
HorizontalOptions = LayoutOptions.FillAndExpand,
BackgroundColor = Color.Black,
Opacity = 0.7,
};
var bv_Bottom_Black = new BoxView
{
VerticalOptions = LayoutOptions.Fill,
HorizontalOptions = LayoutOptions.FillAndExpand,
BackgroundColor = Color.Black,
Opacity = 0.7,
};
Children.Add(bv_Top_Black, 0, 0);
Children.Add(bv_Bottom_Black, 0, 3);
SetColumnSpan(bv_Top_Black, 5);
SetColumnSpan(bv_Bottom_Black, 5);
SetRowSpan(bv_Top_Black, 2);
var bv_Left_Black = new BoxView
{
VerticalOptions = LayoutOptions.Fill,
HorizontalOptions = LayoutOptions.FillAndExpand,
BackgroundColor = Color.Black,
Opacity = 0.7,
};
Children.Add(bv_Left_Black, 0, 2);
var bv_Right_Black = new BoxView
{
VerticalOptions = LayoutOptions.Fill,
HorizontalOptions = LayoutOptions.FillAndExpand,
BackgroundColor = Color.Black,
Opacity = 0.7,
};
Children.Add(bv_Right_Black, 4, 2);
#endregion
txtTitle = new Label
{
VerticalOptions = LayoutOptions.Start,
HorizontalOptions = LayoutOptions.CenterAndExpand,
TextColor = Color.White,
FontSize = 26,
AutomationId = "zxingDefaultOverlay_txtTitle",
};
txtTitle.SetBinding(Label.TextProperty, new Binding(nameof(TitleInfo)));
Children.Add(txtTitle, 1, 0);
SetColumnSpan(txtTitle, 3);
#region ScanArea
var slScanArea = new AbsoluteLayout();
slScanArea.InputTransparent = true;
Children.Add(slScanArea, 1, 2);
SetColumnSpan(slScanArea, 3);
var scanLine = new Image
{
Source = Util.XamariN.Common.ImageSourceUtils.String2ImageSource($"stream://{ScanLine_Base64Str}")
};
scanLine.InputTransparent = true;
AbsoluteLayout.SetLayoutBounds(scanLine, new Rectangle(1, scanLineY, 1, 1));
AbsoluteLayout.SetLayoutFlags(scanLine, AbsoluteLayoutFlags.SizeProportional);
slScanArea.Children.Add(scanLine);
Device.StartTimer(TimeSpan.FromSeconds(0.1), () =>
{
if (scanLineOriginY == -9999) // 初始化 -- 只执行一次
{
scanLineOriginY = -(((int)slScanArea.Height) / 2);
scanLineY = scanLineOriginY;
}
#region 移动效果
scanLineY += 5;
AbsoluteLayout.SetLayoutBounds(scanLine, new Rectangle(1, scanLineY, 1, 1));
if (scanLineY >= slScanArea.Height / 2)
{
scanLineY = scanLineOriginY;
}
#endregion
#region 闪烁效果
if (scanLineOpacityDirection == true)
{
scanLine.Opacity = scanLine.Opacity - 0.1;
}
if (scanLineOpacityDirection == false)
{
scanLine.Opacity = scanLine.Opacity + 0.1;
}
if (scanLine.Opacity == 0 || scanLine.Opacity == 1)
{
scanLineOpacityDirection = !scanLineOpacityDirection;
}
#endregion
return(true);
});
txtScanTipsText = new Label
{
VerticalOptions = LayoutOptions.Center,
HorizontalOptions = LayoutOptions.Center,
TextColor = Color.White,
AutomationId = "zxingDefaultOverlay_BottomTextLabel",
};
txtScanTipsText.SetBinding(Label.TextProperty, new Binding(nameof(LabelScanTipsText)));
#endregion
#region Flash Area
var slFlash = new StackLayout
{
VerticalOptions = LayoutOptions.Center,
HorizontalOptions = LayoutOptions.Center
};
btnFlash = new Button
{
VerticalOptions = LayoutOptions.Center,
HorizontalOptions = LayoutOptions.Center,
Padding = new Thickness(left: 15, top: 0, right: 15, bottom: 0),
Text = "按钮",
TextColor = Color.White,
BackgroundColor = Color.Silver,
Opacity = 0.7,
AutomationId = "zxingDefaultOverlay_FlashButton",
};
btnFlash.SetBinding(Button.IsVisibleProperty, new Binding(nameof(ShowFlashButton)));
btnFlash.SetBinding(Button.TextProperty, new Binding(nameof(ButtonFlashText)));
btnFlash.Clicked += (sender, e) =>
{
FlashButtonClicked?.Invoke(btnFlash, e);
};
slFlash.Children.Add(txtScanTipsText);
slFlash.Children.Add(btnFlash);
Children.Add(slFlash, 0, 3);
SetColumnSpan(slFlash, 5);
#endregion
#region 返回上一层按钮
btnBack = new Image()
{
HeightRequest = 27,
WidthRequest = 27,
Margin = new Thickness(left: 5, top: 5, right: 0, bottom: 0),
Source = Util.XamariN.Common.ImageSourceUtils.String2ImageSource($"stream://{btnBack_Image_Base64Str}")
};
TapGestureRecognizer tapGestureRecognizer = new TapGestureRecognizer()
{
};
tapGestureRecognizer.Tapped += async(s, e) =>
{
if (Application.Current.MainPage is NavigationPage)
{
var index = Application.Current.MainPage.Navigation.NavigationStack.Count - 1;
if (Application.Current.MainPage.Navigation.NavigationStack[index] is ZXingBarcodeScanner)
{
await Application.Current.MainPage.Navigation.PopAsync();
}
}
};
btnBack.GestureRecognizers.Add(tapGestureRecognizer);
btnBack.HorizontalOptions = LayoutOptions.StartAndExpand;
Children.Add(btnBack, 0, 0);
#endregion
}
public ZXingDefaultOverlay()
{
BindingContext = this;
VerticalOptions = LayoutOptions.FillAndExpand;
HorizontalOptions = LayoutOptions.FillAndExpand;
RowDefinitions.Add(new RowDefinition {
Height = new GridLength(1, GridUnitType.Star)
});
RowDefinitions.Add(new RowDefinition {
Height = new GridLength(2, GridUnitType.Star)
});
RowDefinitions.Add(new RowDefinition {
Height = new GridLength(1, GridUnitType.Star)
});
ColumnDefinitions.Add(new ColumnDefinition {
Width = new GridLength(1, GridUnitType.Star)
});
Children.Add(new BoxView {
VerticalOptions = LayoutOptions.Fill,
HorizontalOptions = LayoutOptions.FillAndExpand,
BackgroundColor = Color.Black,
Opacity = 0.7,
}, 0, 0);
Children.Add(new BoxView {
VerticalOptions = LayoutOptions.Fill,
HorizontalOptions = LayoutOptions.FillAndExpand,
BackgroundColor = Color.Black,
Opacity = 0.7,
}, 0, 2);
Children.Add(new BoxView {
VerticalOptions = LayoutOptions.Center,
HorizontalOptions = LayoutOptions.FillAndExpand,
HeightRequest = 3,
BackgroundColor = Color.Red,
Opacity = 0.6,
}, 0, 1);
topText = new Label {
VerticalOptions = LayoutOptions.Center,
HorizontalOptions = LayoutOptions.Center,
TextColor = Color.White,
AutomationId = "zxingDefaultOverlay_TopTextLabel",
};
topText.SetBinding(Label.TextProperty, new Binding(nameof(TopText)));
Children.Add(topText, 0, 0);
botText = new Label {
VerticalOptions = LayoutOptions.Center,
HorizontalOptions = LayoutOptions.Center,
TextColor = Color.White,
AutomationId = "zxingDefaultOverlay_BottomTextLabel",
};
botText.SetBinding(Label.TextProperty, new Binding(nameof(BottomText)));
Children.Add(botText, 0, 2);
flash = new Button {
HorizontalOptions = LayoutOptions.End,
VerticalOptions = LayoutOptions.Start,
Text = "Flash",
TextColor = Color.White,
AutomationId = "zxingDefaultOverlay_FlashButton",
};
flash.SetBinding(Button.IsVisibleProperty, new Binding(nameof(ShowFlashButton)));
flash.Clicked += (sender, e) => {
FlashButtonClicked?.Invoke(flash, e);
};
Children.Add(flash, 0, 0);
}
public ZXingOverlay()
{
BindingContext = this;
//ColumnSpacing = 0;
VerticalOptions = LayoutOptions.FillAndExpand;
HorizontalOptions = LayoutOptions.FillAndExpand;
RowDefinitions.Add(new RowDefinition {
Height = new GridLength(1, GridUnitType.Star)
});
RowDefinitions.Add(new RowDefinition {
Height = new GridLength(2, GridUnitType.Star)
});
RowDefinitions.Add(new RowDefinition {
Height = new GridLength(1, GridUnitType.Star)
});
ColumnDefinitions.Add(new ColumnDefinition {
Width = new GridLength(1, GridUnitType.Star)
});
//ColumnDefinitions.Add(new ColumnDefinition { Width = new GridLength(1, GridUnitType.Star) });
//ColumnDefinitions.Add(new ColumnDefinition { Width = new GridLength(1, GridUnitType.Star) });
//ColumnDefinitions.Add(new ColumnDefinition { Width = new GridLength(1, GridUnitType.Star) });
//ColumnDefinitions.Add(new ColumnDefinition { Width = new GridLength(1, GridUnitType.Star) });
var boxview = new BoxView
{
VerticalOptions = LayoutOptions.Fill,
HorizontalOptions = LayoutOptions.FillAndExpand,
BackgroundColor = Color.Black,
Opacity = 0.6,
};
var boxview2 = new BoxView
{
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
BackgroundColor = Color.Black,
Opacity = 0.6,
};
var boxview3 = new BoxView
{
VerticalOptions = LayoutOptions.Center,
HorizontalOptions = LayoutOptions.FillAndExpand,
HeightRequest = 2,
BackgroundColor = Color.Red,
Opacity = 0.6,
};
Children.Add(boxview, 0, 0);
Children.Add(boxview2, 0, 2);
Children.Add(boxview3, 0, 1);
//SetColumnSpan(boxview, 5);
//SetColumnSpan(boxview2, 5);
var AbsoluteLayouts = new AbsoluteLayout();
SetColumnSpan(AbsoluteLayouts, 1);
//topText = new Label
//{
// VerticalOptions = LayoutOptions.Center,
// HorizontalOptions = LayoutOptions.Center,
// TextColor = Color.White,
// AutomationId = "zxingDefaultOverlay_TopTextLabel",
//};
//topText.SetBinding(Label.TextProperty, new Binding(nameof(TopText)));
//Children.Add(topText, 0, 0);
//SetColumnSpan(topText, 5);
botText = new Label
{
VerticalOptions = LayoutOptions.Center,
HorizontalOptions = LayoutOptions.Center,
TextColor = Color.White,
AutomationId = "zxingDefaultOverlay_BottomTextLabel",
};
botText.SetBinding(Label.TextProperty, new Binding(nameof(BottomText)));
//Children.Add(botText, 0, 2);
//SetColumnSpan(botText, 5);
var MyStackLayout = new StackLayout
{
VerticalOptions = LayoutOptions.Center,
HorizontalOptions = LayoutOptions.Center
};
flash = new Button
{
VerticalOptions = LayoutOptions.Center,
HorizontalOptions = LayoutOptions.Center,
//HeightRequest = 3,
Image = "flash_on.png",
Scale = 0.3,
//Opacity=0.4,
BackgroundColor = Color.FromRgba(255, 255, 255, 0),
AutomationId = "zxingDefaultOverlay_FlashButton",
};
flash.SetBinding(Button.IsVisibleProperty, new Binding(nameof(ShowFlashButton)));
flash.SetBinding(Button.TextProperty, new Binding(nameof(ButtonText)));
flash.Clicked += (sender, e) =>
{
FlashButtonClicked?.Invoke(flash, e);
};
//MyStackLayout.Children.Add(botText);
MyStackLayout.Children.Add(flash);
Children.Add(MyStackLayout, 0, 2);
//SetColumnSpan(MyStackLayout, 5);
//this.ColumnSpacing = 0;
this.RowSpacing = 0;
//Device.StartTimer(TimeSpan.FromSeconds(0.2), () =>
//{
// weizhi += 7;
// AbsoluteLayout.SetLayoutBounds(redline, new Rectangle(1, weizhi, 1, 1));
// if (weizhi > 150)
// {
// weizhi = -100;
// }
// return true;
//});
}
