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分享升星了，散分庆祝一下。附一个类Iphone闹钟的时间选择控件
终于脱掉了5个小裤衩。。。。
前一段时间有人问过如何弄一个类似Iphone的list control，这两天写了一个，贴出来分享一下，不过功能还未完善。
测试效果：
现在还有不完善的地方，比如现在只能要求item的个数要大于等于指定的显示item个数，以后慢慢完善。
前一段时间有人问过如何弄一个类似Iphone的list control，这两天写了一个，贴出来分享一下，不过功能还未完善。
public partial class CustomListControl : Control
{
public CustomListControl()
{
InitializeComponent();
SetStyle(ControlStyles.Selectable, true);
SetStyle(
ControlStyles.AllPaintingInWmPaint |
ControlStyles.OptimizedDoubleBuffer |
ControlStyles.UserPaint,
true
);
}
protected override void OnPaint(PaintEventArgs pe)
{
base.OnPaint(pe);
// Draw background
Rectangle clientRect = new Rectangle(
kBorderWidth,
kBorderWidth,
this.ClientRectangle.Width - 2 * kBorderWidth,
this.ClientRectangle.Height - 2 * kBorderWidth
);
using (LinearGradientBrush b = new LinearGradientBrush(
clientRect,
Color.Black,
Color.White,
90f)
)
{
Blend blend = new Blend();
blend.Positions = new float[] { 0.0f, 0.04f, 0.08f, 0.12f, 0.15f, 0.5f, 0.85f, 0.88f, 0.92f, 0.96f, 1f };
blend.Factors = new float[] { .2f, .4f, 0.6f, 0.8f, 0.85f, 0.95f, .85f, .8f, .6f, .4f, .2f };
b.Blend = blend;
pe.Graphics.FillRectangle(b, clientRect);
}
// Draw border
using (Pen p = new Pen(Color.FromArgb(127, 127, 127)))
{
p.Width = kBorderWidth;
pe.Graphics.DrawRectangle(
p,
new Rectangle(
kBorderWidth / 2,
kBorderWidth / 2,
this.Width - kBorderWidth,
this.Height - kBorderWidth
)
);
}
// Draw selected focus
Rectangle selectedBound = new Rectangle(
this.ClientRectangle.X,
this.ClientRectangle.Y + ((Int32)m_DisplayItemCount / 2) * this.ClientRectangle.Height / (Int32)m_DisplayItemCount,
this.ClientRectangle.Width,
this.ClientRectangle.Height / (Int32)m_DisplayItemCount
);
using (Pen p = new Pen(Color.FromArgb(100, 100, 100, 100)))
{
pe.Graphics.DrawLine(
p,
new Point(selectedBound.X, selectedBound.Y),
new Point(selectedBound.X + selectedBound.Width, selectedBound.Y)
);
}
using (Pen p = new Pen(Color.FromArgb(100, 250, 250, 250)))
{
pe.Graphics.DrawLine(
p,
new Point(selectedBound.X, selectedBound.Y + 1),
new Point(selectedBound.X + selectedBound.Width, selectedBound.Y + 1)
);
}
using (Pen p = new Pen(Color.FromArgb(100, 100, 100, 100)))
{
pe.Graphics.DrawLine(
p,
new Point(selectedBound.X, selectedBound.Y + selectedBound.Height - 2),
new Point(selectedBound.X + selectedBound.Width, selectedBound.Y + selectedBound.Height - 2)
);
}
using (Pen p = new Pen(Color.FromArgb(100, 250, 250, 250)))
{
pe.Graphics.DrawLine(
p,
new Point(selectedBound.X, selectedBound.Y + selectedBound.Height - 1),
new Point(selectedBound.X + selectedBound.Width, selectedBound.Y + selectedBound.Height - 1)
);
}
using (Brush b = new SolidBrush(Color.FromArgb(100, 255, 255, 255)))
{
pe.Graphics.FillRectangle(
b,
new Rectangle(
selectedBound.X,
selectedBound.Y + 2,
selectedBound.Width,
selectedBound.Height / 2 - 2
)
);
}
using (Brush b = new SolidBrush(Color.FromArgb(100, 180, 180, 180)))
{
pe.Graphics.FillRectangle(
b,
new Rectangle(
selectedBound.X,
selectedBound.Y + selectedBound.Height / 2 + 1,
selectedBound.Width,
selectedBound.Height / 2 - 2
)
);
}
// Draw display items
if (m_Items.Count == 0)
return;
using (Brush b = new SolidBrush(this.ForeColor))
{
for (Int32 i = 0; i < (Int32)m_DisplayItemCount; i++)
{
Rectangle bound = new Rectangle(
clientRect.X,
clientRect.Y + i * clientRect.Height / (Int32)m_DisplayItemCount,
clientRect.Width,
clientRect.Height / (Int32)m_DisplayItemCount
);
Int32 index = m_CurrentIndex + i - (Int32)m_DisplayItemCount / 2;
if (index < 0)
index += m_Items.Count;
if (index >= m_Items.Count)
index %= m_Items.Count;
String item = m_Items[index];
using (StringFormat sf = new StringFormat())
{
sf.Alignment = StringAlignment.Center;
sf.LineAlignment = StringAlignment.Center;
pe.Graphics.DrawString(item, this.Font, b, bound, sf);
}
}
}
}
protected override void OnPreviewKeyDown(PreviewKeyDownEventArgs e)
{
base.OnPreviewKeyDown(e);
switch (e.KeyCode)
{
case Keys.Up:
m_CurrentIndex--;
if (m_CurrentIndex < 0)
m_CurrentIndex += m_Items.Count;
this.Invalidate();
break;
case Keys.Down:
m_CurrentIndex++;
if (m_CurrentIndex >= m_Items.Count)
m_CurrentIndex %= m_Items.Count;
this.Invalidate();
break;
default:
break;
}
}
protected override void OnMouseWheel(MouseEventArgs e)
{
base.OnMouseWheel(e);
m_CurrentIndex -= e.Delta / 120;
NormalizeCurrentIndex();
this.Invalidate();
}
protected override void OnMouseClick(MouseEventArgs e)
{
base.OnMouseClick(e);
Int32 delta = e.Y / (this.ClientRectangle.Height / (Int32)m_DisplayItemCount);
m_CurrentIndex += delta - 2;
NormalizeCurrentIndex();
this.Invalidate();
}
[DefaultValue(0)]
private Int32 CurrentIndex
{
get { return m_CurrentIndex; }
set { m_CurrentIndex = value; }
}
public List<String> Items
{
get { return m_Items; }
}
[DefaultValue(DisplayItemCountEnum.Normal)]
public DisplayItemCountEnum DisplayItemCount
{
get { return m_DisplayItemCount; }
set { m_DisplayItemCount = value; }
}
private void NormalizeCurrentIndex()
{
if (m_CurrentIndex >= m_Items.Count)
m_CurrentIndex %= m_Items.Count;
if (m_CurrentIndex < 0)
m_CurrentIndex += m_Items.Count;
}
private List<String> m_Items = new List<String>();
private Int32 m_CurrentIndex;
private DisplayItemCountEnum m_DisplayItemCount = DisplayItemCountEnum.Normal;
private const Int32 kBorderWidth = 3;
public enum DisplayItemCountEnum
{
Less = 3,
Normal = 5,
More = 7
}
}
测试效果：
现在还有不完善的地方，比如现在只能要求item的个数要大于等于指定的显示item个数，以后慢慢完善。
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mxjupiter 2011-12-08
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mark一下，学习学习。。。有些东西做了才知道。。。
txblovezbing1314 2011-02-25
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Loren，最近在忙什么啊，很少看见你了哈
ziyelinhaigmail 2011-02-19
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标记学习
amandag 2010-11-09
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学习
fellowcheng 2010-11-09
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think_huang 2010-11-09
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接分咯~
a511900703 2010-11-09
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我是来接分的。
Waldenz 2010-11-09
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裤衩穿很久了/......
Waldenz 2010-11-09
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xuexi..........
shichao102471077 2010-11-09
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一片冰心在玉壶 2010-11-08
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恭喜下 学习下
LeeGang 2010-11-08
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我是来接分的...
tongjoying 2010-11-08
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gongxigongxi
tongjoying 2010-11-08
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gongxigongxi
lastnemo 2010-11-08
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gxgx
SimonYeung 2010-11-08
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liyupengcainiao 2010-11-08
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恭喜恭喜~~~
gaobn001 2010-11-08
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哎 何年何月我也升星
ycproc 2010-11-08
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subxli 2010-11-08
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GX..
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