mirror of
https://github.com/colhountech/DarkUI.Net5.git
synced 2025-07-02 07:09:27 +03:00
Draw to a buffer to avoid tearing
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parent
7e80b71546
commit
766c4292a9
@ -4,24 +4,11 @@ using System;
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using System.ComponentModel;
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using System.Drawing;
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using System.Windows.Forms;
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using DarkUI.Extensions;
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namespace DarkUI.Controls
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{
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public class DarkComboBox : ComboBox
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{
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public DarkComboBox() : base()
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{
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SetStyle(ControlStyles.OptimizedDoubleBuffer |
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ControlStyles.ResizeRedraw |
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ControlStyles.UserPaint, true);
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DrawMode = DrawMode.OwnerDrawVariable;
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base.FlatStyle = FlatStyle.Flat;
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base.DropDownStyle = ComboBoxStyle.DropDownList;
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}
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[Browsable(false)]
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[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
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public new Color ForeColor { get; set; }
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@ -38,30 +25,139 @@ namespace DarkUI.Controls
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[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
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public new ComboBoxStyle DropDownStyle { get; set; }
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public new void Invalidate()
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private Bitmap _buffer;
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public DarkComboBox() : base()
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{
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base.Invalidate();
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SetStyle(ControlStyles.OptimizedDoubleBuffer |
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ControlStyles.ResizeRedraw |
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ControlStyles.UserPaint, true);
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DrawMode = DrawMode.OwnerDrawVariable;
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base.FlatStyle = FlatStyle.Flat;
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base.DropDownStyle = ComboBoxStyle.DropDownList;
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}
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protected override void Dispose(bool disposing)
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{
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if (disposing)
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_buffer = null;
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base.Dispose(disposing);
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}
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protected override void OnTabStopChanged(EventArgs e)
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{
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base.OnTabStopChanged(e);
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Invalidate();
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}
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protected override void OnTabIndexChanged(EventArgs e)
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{
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base.OnTabIndexChanged(e);
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Invalidate();
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}
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protected override void OnGotFocus(EventArgs e)
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{
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base.OnGotFocus(e);
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Invalidate();
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}
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protected override void OnLostFocus(EventArgs e)
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{
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base.OnLostFocus(e);
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Invalidate();
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}
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protected override void OnTextChanged(EventArgs e)
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{
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Invalidate();
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base.OnTextChanged(e);
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Invalidate();
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}
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protected override void OnTextUpdate(EventArgs e)
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{
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Invalidate();
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base.OnTextUpdate(e);
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Invalidate();
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}
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protected override void OnSelectedValueChanged(EventArgs e)
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{
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Invalidate();
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base.OnSelectedValueChanged(e);
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Invalidate();
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}
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protected override void OnInvalidated(InvalidateEventArgs e)
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{
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base.OnInvalidated(e);
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PaintCombobox();
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}
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private void PaintCombobox()
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{
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if (_buffer == null)
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_buffer = new Bitmap(ClientRectangle.Width, ClientRectangle.Height);
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using (var g = Graphics.FromImage(_buffer))
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{
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var rect = new Rectangle(0, 0, ClientSize.Width, ClientSize.Height);
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var textColor = Colors.LightText;
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var borderColor = Colors.GreySelection;
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var fillColor = Colors.LightBackground;
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if (Focused && TabStop)
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borderColor = Colors.BlueHighlight;
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using (var b = new SolidBrush(fillColor))
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{
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g.FillRectangle(b, rect);
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}
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using (var p = new Pen(borderColor, 1))
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{
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var modRect = new Rectangle(rect.Left, rect.Top, rect.Width - 1, rect.Height - 1);
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g.DrawRectangle(p, modRect);
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}
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var icon = ScrollIcons.scrollbar_arrow_hot;
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g.DrawImageUnscaled(icon,
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rect.Right - icon.Width - (Consts.Padding / 2),
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(rect.Height / 2) - (icon.Height / 2));
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var text = SelectedItem != null ? SelectedItem.ToString() : Text;
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using (var b = new SolidBrush(textColor))
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{
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var padding = 2;
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var modRect = new Rectangle(rect.Left + padding,
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rect.Top + padding,
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rect.Width - icon.Width - (Consts.Padding / 2) - (padding * 2),
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rect.Height - (padding * 2));
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var stringFormat = new StringFormat
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{
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LineAlignment = StringAlignment.Center,
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Alignment = StringAlignment.Near,
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FormatFlags = StringFormatFlags.NoWrap,
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Trimming = StringTrimming.EllipsisCharacter
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};
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g.DrawString(text, Font, b, modRect, stringFormat);
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}
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}
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}
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protected override void OnPaint(PaintEventArgs e)
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{
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if (_buffer == null)
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PaintCombobox();
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var g = e.Graphics;
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g.DrawImageUnscaled(_buffer, Point.Empty);
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}
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protected override void OnDrawItem(DrawItemEventArgs e)
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@ -72,8 +168,8 @@ namespace DarkUI.Controls
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var textColor = Colors.LightText;
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var fillColor = Colors.LightBackground;
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if ((e.State & DrawItemState.Selected) == DrawItemState.Selected ||
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(e.State & DrawItemState.Focus) == DrawItemState.Focus ||
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if ((e.State & DrawItemState.Selected) == DrawItemState.Selected ||
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(e.State & DrawItemState.Focus) == DrawItemState.Focus ||
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(e.State & DrawItemState.NoFocusRect) != DrawItemState.NoFocusRect)
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fillColor = Colors.BlueSelection;
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@ -85,7 +181,7 @@ namespace DarkUI.Controls
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if (e.Index >= 0 && e.Index < Items.Count)
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{
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var text = Items[e.Index].ToString();
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using (var b = new SolidBrush(textColor))
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{
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var padding = 2;
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@ -107,56 +203,5 @@ namespace DarkUI.Controls
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}
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}
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}
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protected override void OnPaint(PaintEventArgs e)
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{
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var g = e.Graphics;
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var rect = new Rectangle(0, 0, ClientSize.Width, ClientSize.Height);
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var textColor = Colors.LightText;
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var borderColor = Colors.GreySelection;
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var fillColor = Colors.LightBackground;
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if (Focused && TabStop)
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borderColor = Colors.BlueHighlight;
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using (var b = new SolidBrush(fillColor))
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{
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g.FillRectangle(b, rect);
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}
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using (var p = new Pen(borderColor, 1))
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{
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var modRect = new Rectangle(rect.Left, rect.Top, rect.Width - 1, rect.Height - 1);
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g.DrawRectangle(p, modRect);
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}
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var icon = ScrollIcons.scrollbar_arrow_hot;
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g.DrawImageUnscaled(icon,
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rect.Right - icon.Width - (Consts.Padding / 2),
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(rect.Height / 2) - (icon.Height / 2));
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var text = SelectedItem != null ? SelectedItem.ToString() : Text;
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using (var b = new SolidBrush(textColor))
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{
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var padding = 2;
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var modRect = new Rectangle(rect.Left + padding,
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rect.Top + padding,
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rect.Width - icon.Width - (Consts.Padding / 2) - (padding * 2),
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rect.Height - (padding * 2));
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var stringFormat = new StringFormat
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{
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LineAlignment = StringAlignment.Center,
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Alignment = StringAlignment.Near,
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FormatFlags = StringFormatFlags.NoWrap,
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Trimming = StringTrimming.EllipsisCharacter
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};
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g.DrawString(text, Font, b, modRect, stringFormat);
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}
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}
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}
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}
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