protected virtual void OnPaintForeground(PaintEventArgs e)
{
base.ItemHeight = GetPreferredSize(Size.Empty).Height;
Color borderColor, foreColor;
if (isHovered && !isPressed && Enabled)
{
foreColor = MetroPaint.ForeColor.ComboBox.Hover(Theme);
borderColor = MetroPaint.BorderColor.ComboBox.Hover(Theme);
}
else if (isHovered && isPressed && Enabled)
{
foreColor = MetroPaint.ForeColor.ComboBox.Press(Theme);
borderColor = MetroPaint.BorderColor.ComboBox.Press(Theme);
}
else if (!Enabled)
{
foreColor = MetroPaint.ForeColor.ComboBox.Disabled(Theme);
borderColor = MetroPaint.BorderColor.ComboBox.Disabled(Theme);
}
else
{
foreColor = MetroPaint.ForeColor.ComboBox.Normal(Theme);
borderColor = MetroPaint.BorderColor.ComboBox.Normal(Theme);
}
using (var p = new Pen(borderColor))
{
var boxRect = new Rectangle(0, 0, Width - 1, Height - 1);
e.Graphics.DrawRectangle(p, boxRect);
}
using (var b = new SolidBrush(foreColor))
{
e.Graphics.FillPolygon(b,
new[]
{
new Point(Width - 20, (Height / 2) - 2), new Point(Width - 9, (Height / 2) - 2),
new Point(Width - 15, (Height / 2) + 4)
});
}
var textRect = new Rectangle(2, 2, Width - 20, Height - 4);
TextRenderer.DrawText(e.Graphics, Text, MetroFonts.ComboBox(metroComboBoxSize, metroComboBoxWeight),
textRect, foreColor, TextFormatFlags.Left | TextFormatFlags.VerticalCenter);
OnCustomPaintForeground(new MetroPaintEventArgs(Color.Empty, foreColor, e.Graphics));
if (displayFocusRectangle && isFocused)
{
ControlPaint.DrawFocusRectangle(e.Graphics, ClientRectangle);
}
if (drawPrompt)
{
DrawTextPrompt(e.Graphics);
}
}
public MetroComboBox()
{
SetStyle(ControlStyles.SupportsTransparentBackColor |
ControlStyles.OptimizedDoubleBuffer |
ControlStyles.ResizeRedraw |
ControlStyles.UserPaint, true);
DropDownStyle = ComboBoxStyle.DropDownList;
base.DrawMode = DrawMode.OwnerDrawFixed;
drawPrompt = (SelectedIndex == -1);
// setup the textbox
this.SuspendLayout();
textBox.Location = new System.Drawing.Point(0, 0);
textBox.FontSize = (MetroTextBoxSize)metroComboBoxSize;
textBox.FontWeight = (MetroTextBoxWeight)metroComboBoxWeight;
textBox.WaterMarkFont = MetroFonts.ComboBox(metroComboBoxSize, metroComboBoxWeight);
textBox.Size = this.Size;
textBox.TabIndex = 0;
textBox.Margin = new Padding(0);
textBox.Padding = new Padding(0);
textBox.TextAlign = HorizontalAlignment.Left;
textBox.Resize += TextBox_Resize;
textBox.TextChanged += TextBox_TextChanged;
textBox.UseSelectable = true;
textBox.Enter += TextBox_Enter;
textBox.Visible = false;
this.Controls.Add(textBox);
this.ResumeLayout(true);
this.AdjustControls();
}
protected override void OnDrawItem(DrawItemEventArgs e)
{
if (e.Index >= 0)
{
Color foreColor;
if (e.State == (DrawItemState.NoAccelerator | DrawItemState.NoFocusRect) || e.State == DrawItemState.None)
{
foreColor = MetroPaint.ForeColor.Link.Normal(Theme);
}
else
{
using (SolidBrush b = new SolidBrush(MetroPaint.GetStyleColor(Style)))
{
e.Graphics.FillRectangle(b, new Rectangle(e.Bounds.Left, e.Bounds.Top, e.Bounds.Width, e.Bounds.Height));
}
foreColor = MetroPaint.ForeColor.Tile.Normal(Theme);
}
Rectangle textRect = new Rectangle(0, e.Bounds.Top, e.Bounds.Width, e.Bounds.Height);
TextRenderer.DrawText(e.Graphics, GetItemText(Items[e.Index]), MetroFonts.ComboBox(metroComboBoxSize, metroComboBoxWeight), textRect, foreColor, TextFormatFlags.Left | TextFormatFlags.VerticalCenter);
}
else
{
base.OnDrawItem(e);
}
}
private void DrawTextPrompt(Graphics g)
{
Color backColor = BackColor;
if (!useCustomBackColor)
{
backColor = MetroPaint.BackColor.Form(Theme);
}
Rectangle textRect = new Rectangle(2, 2, Width - 20, Height - 4);
TextRenderer.DrawText(g, promptText, MetroFonts.ComboBox(metroComboBoxSize, metroComboBoxWeight), textRect, SystemColors.GrayText, backColor, TextFormatFlags.Left | TextFormatFlags.VerticalCenter | TextFormatFlags.EndEllipsis);
}
private void DrawTextPrompt(Graphics g)
{
Color backColor = this.BackColor;
if (!this.useCustomBackColor)
{
backColor = MetroPaint.BackColor.Form(this.Theme);
}
Rectangle rectangle = new Rectangle(2, 2, base.Width - 20, base.Height - 4);
TextRenderer.DrawText(g, this.promptText, MetroFonts.ComboBox(this.metroComboBoxSize, this.metroComboBoxWeight), rectangle, SystemColors.GrayText, backColor, TextFormatFlags.EndEllipsis | TextFormatFlags.VerticalCenter);
}
public override System.Drawing.Size GetPreferredSize(System.Drawing.Size proposedSize)
{
System.Drawing.Size height;
base.GetPreferredSize(proposedSize);
using (Graphics graphic = base.CreateGraphics())
{
string str = (this.Text.Length > 0 ? this.Text : "MeasureText");
proposedSize = new System.Drawing.Size(2147483647, 2147483647);
height = TextRenderer.MeasureText(graphic, str, MetroFonts.ComboBox(this.metroComboBoxSize, this.metroComboBoxWeight), proposedSize, TextFormatFlags.VerticalCenter | TextFormatFlags.LeftAndRightPadding);
height.Height = height.Height + 4;
}
return(height);
}
protected virtual void OnPaintForeground(PaintEventArgs e)
{
Color color;
Color color1;
base.ItemHeight = this.GetPreferredSize(System.Drawing.Size.Empty).Height;
if (this.isHovered && !this.isPressed && base.Enabled)
{
color1 = MetroPaint.ForeColor.ComboBox.Hover(this.Theme);
color = MetroPaint.BorderColor.ComboBox.Hover(this.Theme);
}
else if (this.isHovered && this.isPressed && base.Enabled)
{
color1 = MetroPaint.ForeColor.ComboBox.Press(this.Theme);
color = MetroPaint.BorderColor.ComboBox.Press(this.Theme);
}
else if (base.Enabled)
{
color1 = MetroPaint.ForeColor.ComboBox.Normal(this.Theme);
color = MetroPaint.BorderColor.ComboBox.Normal(this.Theme);
}
else
{
color1 = MetroPaint.ForeColor.ComboBox.Disabled(this.Theme);
color = MetroPaint.BorderColor.ComboBox.Disabled(this.Theme);
}
using (Pen pen = new Pen(color))
{
Rectangle rectangle = new Rectangle(0, 0, base.Width - 1, base.Height - 1);
e.Graphics.DrawRectangle(pen, rectangle);
}
using (SolidBrush solidBrush = new SolidBrush(color1))
{
Graphics graphics = e.Graphics;
Point[] point = new Point[] { new Point(base.Width - 20, base.Height / 2 - 2), new Point(base.Width - 9, base.Height / 2 - 2), new Point(base.Width - 15, base.Height / 2 + 4) };
graphics.FillPolygon(solidBrush, point);
}
Rectangle rectangle1 = new Rectangle(2, 2, base.Width - 20, base.Height - 4);
TextRenderer.DrawText(e.Graphics, this.Text, MetroFonts.ComboBox(this.metroComboBoxSize, this.metroComboBoxWeight), rectangle1, color1, TextFormatFlags.VerticalCenter);
this.OnCustomPaintForeground(new MetroPaintEventArgs(Color.Empty, color1, e.Graphics));
if (this.displayFocusRectangle && this.isFocused)
{
ControlPaint.DrawFocusRectangle(e.Graphics, base.ClientRectangle);
}
if (this.drawPrompt)
{
this.DrawTextPrompt(e.Graphics);
}
}
protected override void OnDrawItem(DrawItemEventArgs e)
{
if (e.Index >= 0)
{
Color foreColor;
Color backColor = BackColor;
if (!UseCustomBackColor)
{
backColor = MetroPaint.BackColor.Form(Theme);
}
if (e.State == (DrawItemState.NoAccelerator | DrawItemState.NoFocusRect) || e.State == DrawItemState.None)
{
using (SolidBrush b = new SolidBrush(backColor))
{
e.Graphics.FillRectangle(b, new Rectangle(e.Bounds.Left, e.Bounds.Top, e.Bounds.Width, e.Bounds.Height));
}
foreColor = MetroPaint.ForeColor.Link.Normal(Theme);
}
else
{
using (SolidBrush b = new SolidBrush(MetroPaint.GetStyleColor(Style)))
{
e.Graphics.FillRectangle(b, new Rectangle(e.Bounds.Left, e.Bounds.Top, e.Bounds.Width, e.Bounds.Height));
}
foreColor = MetroPaint.ForeColor.Tile.Normal(Theme);
}
Rectangle textRect = new Rectangle(0, e.Bounds.Top, e.Bounds.Width, e.Bounds.Height);
TextRenderer.DrawText(e.Graphics, GetItemText(Items[e.Index]), MetroFonts.ComboBox(FontSize, FontWeight), textRect, foreColor, TextFormatFlags.Left | TextFormatFlags.VerticalCenter);
var item = Items[e.Index] as ColorPickerComboxItem;
if (item != null)
{
var brush = new SolidBrush(item.DrawColor);
var rect = e.Bounds;
var dr = new Rectangle(rect.X + Width, rect.Y + rect.Height / 4, ColorWidth, rect.Height / 2);
e.Graphics.FillRectangle(brush, dr);
SelectedColor = item.DrawColor;
}
}
else
{
base.OnDrawItem(e);
}
}
protected override void OnDrawItem(DrawItemEventArgs e)
{
Color color;
if (e.Index < 0)
{
base.OnDrawItem(e);
return;
}
Color backColor = this.BackColor;
if (!this.useCustomBackColor)
{
backColor = MetroPaint.BackColor.Form(this.Theme);
}
if (e.State == (DrawItemState.NoAccelerator | DrawItemState.NoFocusRect) || e.State == DrawItemState.None)
{
using (SolidBrush solidBrush = new SolidBrush(backColor))
{
Graphics graphics = e.Graphics;
int left = e.Bounds.Left;
int top = e.Bounds.Top;
int width = e.Bounds.Width;
Rectangle bounds = e.Bounds;
graphics.FillRectangle(solidBrush, new Rectangle(left, top, width, bounds.Height));
}
color = MetroPaint.ForeColor.Link.Normal(this.Theme);
}
else
{
using (SolidBrush solidBrush1 = new SolidBrush(MetroPaint.GetStyleColor(this.Style)))
{
Graphics graphic = e.Graphics;
int num = e.Bounds.Left;
int top1 = e.Bounds.Top;
int width1 = e.Bounds.Width;
Rectangle rectangle = e.Bounds;
graphic.FillRectangle(solidBrush1, new Rectangle(num, top1, width1, rectangle.Height));
}
color = MetroPaint.ForeColor.Tile.Normal(this.Theme);
}
int num1 = e.Bounds.Top;
int width2 = e.Bounds.Width;
Rectangle bounds1 = e.Bounds;
Rectangle rectangle1 = new Rectangle(0, num1, width2, bounds1.Height);
TextRenderer.DrawText(e.Graphics, base.GetItemText(base.Items[e.Index]), MetroFonts.ComboBox(this.metroComboBoxSize, this.metroComboBoxWeight), rectangle1, color, TextFormatFlags.VerticalCenter);
}
public override Size GetPreferredSize(Size proposedSize)
{
Size preferredSize;
base.GetPreferredSize(proposedSize);
using (var g = CreateGraphics())
{
string measureText = Text.Length > 0 ? Text : "MeasureText";
proposedSize = new Size(int.MaxValue, int.MaxValue);
preferredSize = TextRenderer.MeasureText(g, measureText, MetroFonts.ComboBox(metroComboBoxSize, metroComboBoxWeight), proposedSize, TextFormatFlags.Left | TextFormatFlags.LeftAndRightPadding | TextFormatFlags.VerticalCenter);
preferredSize.Height += 4;
}
return(preferredSize);
}
protected override void OnDrawItem(DrawItemEventArgs e)
{
if (e.Index >= 0)
{
Color foreColor = MetroPaint.ForeColor.Link.Normal(Theme);
Color backColor = BackColor;
if (!useCustomBackColor)
{
backColor = MetroPaint.BackColor.Form(Theme);
}
if ((e.State & DrawItemState.Selected) == DrawItemState.Selected)
{
using (SolidBrush b = new SolidBrush(MetroPaint.GetStyleColor(Style)))
{
e.Graphics.FillRectangle(b, new Rectangle(e.Bounds.Left, e.Bounds.Top, e.Bounds.Width, e.Bounds.Height));
}
foreColor = MetroPaint.ForeColor.Tile.Normal(Theme);
OnItemMouseHover(this.Items[e.Index], e);
}
else
{
using (SolidBrush b = new SolidBrush(backColor))
{
e.Graphics.FillRectangle(b, new Rectangle(e.Bounds.Left, e.Bounds.Top, e.Bounds.Width, e.Bounds.Height));
}
}
if (this.DropDownStyle != ComboBoxStyle.DropDown)
{
Rectangle textRect = new Rectangle(0, e.Bounds.Top, e.Bounds.Width, e.Bounds.Height);
TextRenderer.DrawText(e.Graphics, GetItemText(Items[e.Index]), MetroFonts.ComboBox(metroComboBoxSize, metroComboBoxWeight), textRect, foreColor, TextFormatFlags.Left | TextFormatFlags.VerticalCenter);
}
else
{
Rectangle textRect = new Rectangle(0, e.Bounds.Top, this.textBox.Width, e.Bounds.Height);
TextRenderer.DrawText(e.Graphics, GetItemText(Items[e.Index]), MetroFonts.ComboBox(metroComboBoxSize, metroComboBoxWeight), textRect, foreColor, TextFormatFlags.Left | TextFormatFlags.VerticalCenter);
}
}
else
{
base.OnDrawItem(e);
}
}
private void DrawTextPrompt(Graphics g)
{
Rectangle textRect = new Rectangle(2, 2, Width - 20, Height - 4);
TextRenderer.DrawText(g, promptText, MetroFonts.ComboBox(metroComboBoxSize, metroComboBoxWeight), textRect, SystemColors.GrayText, BackColor, TextFormatFlags.Left | TextFormatFlags.VerticalCenter | TextFormatFlags.EndEllipsis);
}
protected virtual void OnPaintForeground(PaintEventArgs e)
{
base.ItemHeight = GetPreferredSize(Size.Empty).Height;
Color borderColor, foreColor;
if (isHovered && !isPressed && Enabled)
{
foreColor = MetroPaint.ForeColor.ComboBox.Hover(Theme);
borderColor = MetroPaint.BorderColor.ComboBox.Hover(Theme);
}
else if (isHovered && isPressed && Enabled)
{
foreColor = MetroPaint.ForeColor.ComboBox.Press(Theme);
borderColor = MetroPaint.BorderColor.ComboBox.Press(Theme);
}
else if (!Enabled)
{
foreColor = MetroPaint.ForeColor.ComboBox.Disabled(Theme);
borderColor = MetroPaint.BorderColor.ComboBox.Disabled(Theme);
}
else
{
foreColor = MetroPaint.ForeColor.ComboBox.Normal(Theme);
borderColor = MetroPaint.BorderColor.ComboBox.Normal(Theme);
}
using (Pen p = new Pen(borderColor))
{
int cornerRadius = 3;
p.Width = 1;
//边框工作区
Rectangle rect = this.ClientRectangle;
GraphicsPath Rect = new GraphicsPath();
// 添加圆弧
Rect.AddArc(0, 0, cornerRadius * 2, cornerRadius * 2, 180, 90);
Rect.AddArc(rect.Width - cornerRadius * 2 - 1, 0, cornerRadius * 2, cornerRadius * 2, 270, 90);
Rect.AddArc(rect.Width - cornerRadius * 2 - 1, rect.Height - cornerRadius * 2 - 1, cornerRadius * 2,
cornerRadius * 2, 0, 90);
Rect.AddArc(0, rect.Height - cornerRadius * 2 - 1, cornerRadius * 2, cornerRadius * 2, 90, 90);
Rect.CloseFigure();
e.Graphics.DrawPath(p, Rect);
}
using (SolidBrush b = new SolidBrush(foreColor))
{
e.Graphics.FillPolygon(b, new Point[] { new Point(Width - 20, (Height / 2) - 2), new Point(Width - 9, (Height / 2) - 2), new Point(Width - 15, (Height / 2) + 4) });
}
Rectangle textRect = new Rectangle(2, 2, Width - 20, Height - 4);
TextRenderer.DrawText(e.Graphics, Text, MetroFonts.ComboBox(metroComboBoxSize, metroComboBoxWeight), textRect, foreColor, TextFormatFlags.Left | TextFormatFlags.VerticalCenter);
OnCustomPaintForeground(new MetroPaintEventArgs(Color.Empty, foreColor, e.Graphics));
if (displayFocusRectangle && isFocused)
{
ControlPaint.DrawFocusRectangle(e.Graphics, ClientRectangle);
}
if (drawPrompt)
{
DrawTextPrompt(e.Graphics);
}
}