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meelstorm
200
framework/MaterialSkin.Core/Controls/MaterialFlatButton.cs
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200
framework/MaterialSkin.Core/Controls/MaterialFlatButton.cs
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using System;
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using System.ComponentModel;
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using System.Drawing;
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using System.Drawing.Drawing2D;
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using System.Drawing.Text;
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using System.Windows.Forms;
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using MaterialSkin.Animations;
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namespace MaterialSkin.Controls
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{
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public class MaterialFlatButton : Button, IMaterialControl
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{
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[Browsable(false)]
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public int Depth { get; set; }
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[Browsable(false)]
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public MaterialSkinManager SkinManager => MaterialSkinManager.Instance;
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[Browsable(false)]
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public MouseState MouseState { get; set; }
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public bool Primary { get; set; }
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private readonly AnimationManager _animationManager;
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private readonly AnimationManager _hoverAnimationManager;
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private SizeF _textSize;
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private Image _icon;
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public Image Icon
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{
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get { return _icon; }
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set
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{
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_icon = value;
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if (AutoSize)
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Size = GetPreferredSize();
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Invalidate();
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}
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}
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public MaterialFlatButton()
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{
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Primary = false;
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_animationManager = new AnimationManager(false)
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{
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Increment = 0.03,
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AnimationType = AnimationType.EaseOut
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};
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_hoverAnimationManager = new AnimationManager
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{
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Increment = 0.07,
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AnimationType = AnimationType.Linear
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};
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_hoverAnimationManager.OnAnimationProgress += sender => Invalidate();
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_animationManager.OnAnimationProgress += sender => Invalidate();
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AutoSizeMode = AutoSizeMode.GrowAndShrink;
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Margin = new Padding(4, 6, 4, 6);
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Padding = new Padding(0);
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}
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public override string Text
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{
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get { return base.Text; }
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set
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{
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base.Text = value;
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_textSize = CreateGraphics().MeasureString(value.ToUpper(), SkinManager.ROBOTO_MEDIUM_10);
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if (AutoSize)
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Size = GetPreferredSize();
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Invalidate();
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}
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}
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protected override void OnPaint(PaintEventArgs pevent)
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{
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var g = pevent.Graphics;
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g.TextRenderingHint = TextRenderingHint.AntiAlias;
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g.Clear(Parent.BackColor);
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//Hover
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Color c = SkinManager.GetFlatButtonHoverBackgroundColor();
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using (Brush b = new SolidBrush(Color.FromArgb((int)(_hoverAnimationManager.GetProgress() * c.A), c.RemoveAlpha())))
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g.FillRectangle(b, ClientRectangle);
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//Ripple
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if (_animationManager.IsAnimating())
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{
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g.SmoothingMode = SmoothingMode.AntiAlias;
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for (var i = 0; i < _animationManager.GetAnimationCount(); i++)
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{
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var animationValue = _animationManager.GetProgress(i);
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var animationSource = _animationManager.GetSource(i);
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using (Brush rippleBrush = new SolidBrush(Color.FromArgb((int)(101 - (animationValue * 100)), Color.Black)))
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{
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var rippleSize = (int)(animationValue * Width * 2);
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g.FillEllipse(rippleBrush, new Rectangle(animationSource.X - rippleSize / 2, animationSource.Y - rippleSize / 2, rippleSize, rippleSize));
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}
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}
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g.SmoothingMode = SmoothingMode.None;
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}
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//Icon
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var iconRect = new Rectangle(8, 6, 24, 24);
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if (string.IsNullOrEmpty(Text))
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// Center Icon
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iconRect.X += 2;
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if (Icon != null)
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g.DrawImage(Icon, iconRect);
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//Text
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var textRect = ClientRectangle;
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if (Icon != null)
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{
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//
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// Resize and move Text container
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//
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// First 8: left padding
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// 24: icon width
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// Second 4: space between Icon and Text
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// Third 8: right padding
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textRect.Width -= 8 + 24 + 4 + 8;
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// First 8: left padding
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// 24: icon width
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// Second 4: space between Icon and Text
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textRect.X += 8 + 24 + 4;
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}
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g.DrawString(
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Text.ToUpper(),
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SkinManager.ROBOTO_MEDIUM_10,
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Enabled ? (Primary ? SkinManager.ColorScheme.PrimaryBrush : SkinManager.GetPrimaryTextBrush()) : SkinManager.GetFlatButtonDisabledTextBrush(),
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textRect,
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new StringFormat { Alignment = StringAlignment.Center, LineAlignment = StringAlignment.Center }
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);
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}
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private Size GetPreferredSize()
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{
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return GetPreferredSize(new Size(0, 0));
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}
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public override Size GetPreferredSize(Size proposedSize)
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{
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// Provides extra space for proper padding for content
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var extra = 16;
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if (Icon != null)
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// 24 is for icon size
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// 4 is for the space between icon & text
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extra += 24 + 4;
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return new Size((int)Math.Ceiling(_textSize.Width) + extra, 36);
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}
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protected override void OnCreateControl()
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{
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base.OnCreateControl();
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if (DesignMode) return;
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MouseState = MouseState.OUT;
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MouseEnter += (sender, args) =>
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{
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MouseState = MouseState.HOVER;
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_hoverAnimationManager.StartNewAnimation(AnimationDirection.In);
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Invalidate();
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};
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MouseLeave += (sender, args) =>
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{
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MouseState = MouseState.OUT;
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_hoverAnimationManager.StartNewAnimation(AnimationDirection.Out);
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Invalidate();
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};
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MouseDown += (sender, args) =>
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{
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if (args.Button == MouseButtons.Left)
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{
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MouseState = MouseState.DOWN;
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_animationManager.StartNewAnimation(AnimationDirection.In, args.Location);
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Invalidate();
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}
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};
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MouseUp += (sender, args) =>
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{
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MouseState = MouseState.HOVER;
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Invalidate();
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};
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}
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}
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}
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