Điều này có vẻ khá chặt chẽ. Min/Max chiều rộng và chiều cao được tính cũng như biên độ biến. Vấn đề duy nhất tôi nhận thức được là khi chuyển động của con trỏ nhanh và kích thước nằm trong khoảng 20 điểm ảnh của phút, nó hơi phần nào do tốc độ làm mới. Không phải là một vấn đề lớn nhưng tôi sẽ sắp xếp nó.
alt text http://cartesia.pbworks.com/f/1265489984/Resize.png
tôi dường như không thể có được thẻ Window để hiển thị đúng ... (Chỉ cần đưa ra các dấu nháy đơn và nó nên được tốt.) Bất cứ ai có bất kỳ suy nghĩ?
XAML
<'Window x:Class="Article_1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:sys="clr-namespace:System;assembly=mscorlib"
Title="Article_1_Resizing"
Background="Transparent" AllowsTransparency="True"
WindowStyle="None" WindowStartupLocation="CenterScreen"
MinHeight="100" Height="400" MaxHeight="600"
MinWidth="100" Width="400" MaxWidth="800">
<Window.Resources>
<SolidColorBrush x:Key="Brush_ChromeBackground" Color="#FFC8D1E0"/>
<SolidColorBrush x:Key="Brush_ChromeBorder" Color="#FFA0A0A0"/>
<sys:Double x:Key="Chrome_BorderWidth">5</sys:Double>
</Window.Resources>
<Border x:Name="Border_Chrome"
BorderBrush="{StaticResource Brush_ChromeBorder}" BorderThickness="1,1,1,1"
CornerRadius="2,2,2,2"
Width="Auto">
<Grid x:Name="Grid" ShowGridLines="False">
<Grid.RowDefinitions>
<RowDefinition x:Name="row_Top" Height="Auto"/>
<RowDefinition x:Name="row_Middle" Height="*"/>
<RowDefinition x:Name="row_Bottom" Height="Auto"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition x:Name="col_Left" Width="Auto"/>
<ColumnDefinition x:Name="col_Middle" Width="*"/>
<ColumnDefinition x:Name="col_Right" Width="Auto"/>
</Grid.ColumnDefinitions>
<!-- Top Row -->
<Rectangle x:Name="Rectangle_TopLeft"
Grid.Row="0" Grid.Column="0"
Width="{StaticResource Chrome_BorderWidth}" Height="{StaticResource Chrome_BorderWidth}"
Fill="{StaticResource Brush_ChromeBackground}"
Cursor="SizeNWSE"
MouseLeftButtonDown="Resize_Begin" MouseLeftButtonUp="Resize_End"
MouseMove="Resize"/>
<Rectangle x:Name="Rectangle_TopMiddle"
Grid.Row="0" Grid.Column="1"
Height="{StaticResource Chrome_BorderWidth}"
Fill="{StaticResource Brush_ChromeBackground}"
Cursor="SizeNS"
MouseLeftButtonDown="Resize_Begin" MouseLeftButtonUp="Resize_End"
MouseMove="Resize"/>
<Rectangle x:Name="Rectangle_TopRight"
Grid.Row="0" Grid.Column="2"
Width="{StaticResource Chrome_BorderWidth}" Height="{StaticResource Chrome_BorderWidth}"
Fill="{StaticResource Brush_ChromeBackground}"
Cursor="SizeNESW"
MouseLeftButtonDown="Resize_Begin" MouseLeftButtonUp="Resize_End"
MouseMove="Resize"/>
<!-- Middle Row -->
<Rectangle x:Name="Rectangle_MiddleLeft"
Grid.Row="1" Grid.Column="0"
Width="{StaticResource Chrome_BorderWidth}"
Fill="{StaticResource Brush_ChromeBackground}"
Cursor="SizeWE"
MouseLeftButtonDown="Resize_Begin" MouseLeftButtonUp="Resize_End"
MouseMove="Resize"/>
<!-- Content -->
<Label Content="Mouse Down to Move - Double Click to Close"
Grid.Row="1" Grid.Column="1"
Background="White" Foreground="Black"
HorizontalAlignment="Stretch" HorizontalContentAlignment="Center"
VerticalAlignment="Stretch" VerticalContentAlignment="Center"
MouseDoubleClick="_Close"
MouseLeftButtonDown="Move"/>
<Rectangle x:Name="Rectangle_MiddleRight"
Grid.Row="1" Grid.Column="2"
Width="{StaticResource Chrome_BorderWidth}"
Fill="{StaticResource Brush_ChromeBackground}"
Cursor="SizeWE"
MouseLeftButtonDown="Resize_Begin" MouseLeftButtonUp="Resize_End"
MouseMove="Resize"/>
<!-- Bottom Row -->
<Rectangle x:Name="Rectangle_BottomLeft"
Grid.Row="2" Grid.Column="0"
Width="{StaticResource Chrome_BorderWidth}" Height="{StaticResource Chrome_BorderWidth}"
Fill="{StaticResource Brush_ChromeBackground}"
Cursor="SizeNESW"
MouseLeftButtonDown="Resize_Begin" MouseLeftButtonUp="Resize_End"
MouseMove="Resize"/>
<Rectangle x:Name="Rectangle_BottomMiddle"
Grid.Row="2" Grid.Column="1"
Height="{StaticResource Chrome_BorderWidth}"
Fill="{StaticResource Brush_ChromeBackground}"
Cursor="SizeNS"
MouseLeftButtonDown="Resize_Begin" MouseLeftButtonUp="Resize_End"
MouseMove="Resize"/>
<Rectangle x:Name="Rectangle_BottomRight"
Grid.Row="2" Grid.Column="2"
Width="{StaticResource Chrome_BorderWidth}" Height="{StaticResource Chrome_BorderWidth}"
Fill="{StaticResource Brush_ChromeBackground}"
Cursor="SizeNWSE"
MouseLeftButtonDown="Resize_Begin" MouseLeftButtonUp="Resize_End"
MouseMove="Resize"/>
</Grid>
</Border>
</Window>
Mã Đằng sau
Partial Public Class Article_1
Public Sub New()
InitializeComponent()
Initialize_Sizes
End Sub
Private isResizing as Boolean = False
Private Const CURSOR_OFFSET_SMALL As Double = 3
Private Const CURSOR_OFFSET_LARGE As Double = 5
Private _x As Double = 0
Private _Y As Double = 0
Private Sub Initialize_Sizes
Dim _MinWidth As Double = Rectangle_MiddleLeft.Width + _
Rectangle_BottomRight.Width + _
border_Chrome.BorderThickness.Left + _
border_Chrome.BorderThickness.Right + 1
If MinWidth < _MinWidth then _
MinWidth = _MinWidth
Dim _MinHeight As Double = Rectangle_TopMiddle.Height + _
Rectangle_BottomMiddle.Height + _
border_Chrome.BorderThickness.top + _
border_Chrome.BorderThickness.Bottom + 1
If MinHeight < _MinHeight then _
MinHeight = _MinHeight
End Sub
Private sub Resize_Begin(sender as object, _
e As MouseEventArgs)
isResizing = True
DirectCast(sender, Rectangle).CaptureMouse
End Sub
Private sub Resize_End(sender as object, _
e As MouseEventArgs)
isResizing = False
DirectCast(sender, Rectangle).ReleaseMouseCapture
End Sub
Private Sub Resize(sender As Object, _
e As MouseEventArgs)
If isResizing = False then Exit Sub
_x = e.GetPosition(me).x
_y = e.GetPosition(me).Y
Select Case DirectCast(sender, Rectangle).Name
Case "Rectangle_TopLeft" : Resize_Width_Left
Resize_Height_Top
Case "Rectangle_TopMiddle" : Resize_Height_Top
Case "Rectangle_TopRight" : Resize_Width_Right
Resize_Height_Top
Case "Rectangle_MiddleLeft" : Resize_Width_Left
Case "Rectangle_MiddleRight" : Resize_Width_Right
Case "Rectangle_BottomLeft" : Resize_Width_Left
Resize_Height_Bottom
Case "Rectangle_BottomMiddle" : Resize_Height_Bottom
Case "Rectangle_BottomRight" : Resize_Width_Right
Resize_Height_Bottom
Case else : MessageBox.Show("Error in Resize")
End Select
End Sub
Private Sub Resize_Width_Left
_x -= CURSOR_OFFSET_SMALL
If Width - _x >= MinWidth Then
If Width - _x <= MaxWidth then
Width -= _x
Left += _x
End If
End If
End Sub
Private Sub Resize_Width_Right
_x += CURSOR_OFFSET_LARGE
Select Case _x
Case Is < MinWidth : width = MinWidth
Case Is > MaxWidth : Width = MaxWidth
Case Else : Width = _x
End Select
End Sub
Private Sub Resize_Height_Top
_y -= CURSOR_OFFSET_SMALL
If Height - _y >= MinHeight Then
If Height - _y <= MaxHeight then
Height -= _y
Top += _y
End If
End If
End Sub
Private Sub Resize_Height_Bottom
_y += CURSOR_OFFSET_SMALL
Select Case _y
Case Is < MinHeight : Height = MinHeight
Case Is > MaxHeight : Height = MaxHeight
Case Else : Height = _y
End Select
End Sub
Private Sub Move(ByVal sender As Object, _
ByVal e As System.Windows.Input.MouseButtonEventArgs)
Dim curs As Cursor = Cursor
Cursor = Cursors.SizeAll
DragMove()
Cursor = Curs
End Sub
Private Sub _Close()
Close
End Sub
End Class
Cảm ơn ehartwell! – Brad