412 lines
12 KiB
C#
412 lines
12 KiB
C#
/******************************************************************************
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* SunnyUI 开源控件库、工具类库、扩展类库、多页面开发框架。
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* CopyRight (C) 2012-2020 ShenYongHua(沈永华).
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* QQ群：56829229 QQ：17612584 EMail：SunnyUI@qq.com
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*
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* Blog: https://www.cnblogs.com/yhuse
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* Gitee: https://gitee.com/yhuse/SunnyUI
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* GitHub: https://github.com/yhuse/SunnyUI
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*
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* SunnyUI.dll can be used for free under the GPL-3.0 license.
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* If you use this code, please keep this note.
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* 如果您使用此代码，请保留此说明。
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******************************************************************************
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* 文件名称: UIImageButton.cs
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* 文件说明: 图像按钮
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* 当前版本: V2.2
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* 创建日期: 2020-01-01
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*
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* 2020-01-01: V2.2.0 增加文件说明
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******************************************************************************/
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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.Windows.Forms;
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namespace Sunny.UI
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{
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/// <summary>
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/// 图像按钮
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/// </summary>
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public sealed class UIImageButton : PictureBox
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{
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/// <summary>
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/// 必需的设计器变量。
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/// </summary>
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private IContainer components;
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private bool IsPress;
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private bool IsHover;
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private Image imageDisabled;
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private Image imagePress;
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private Image imageHover;
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private Image imageSelected;
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private bool selected;
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private string text;
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private ContentAlignment textAlign = ContentAlignment.MiddleCenter;
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private Font font = UIFontColor.Font;
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private Color foreColor = UIFontColor.Primary;
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[Category("外观")]
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[Description("按钮文字")]
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[Browsable(true)]
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[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
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public override string Text
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{
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get => text;
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set
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{
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if (text != value)
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{
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text = value;
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Invalidate();
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}
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}
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}
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[DefaultValue(ContentAlignment.MiddleCenter)]
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public ContentAlignment TextAlign
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{
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get => textAlign;
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set
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{
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textAlign = value;
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Invalidate();
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}
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}
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[Category("外观")]
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[Description("文字字体")]
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[Browsable(true)]
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[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
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public override Font Font
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{
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get => font;
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set
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{
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font = value;
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Invalidate();
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}
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}
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[Category("外观")]
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[Description("文字颜色")]
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[Browsable(true)]
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[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
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[DefaultValue(typeof(Color), "48, 48, 48")]
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public override Color ForeColor
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{
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get => foreColor;
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set
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{
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foreColor = value;
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Invalidate();
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}
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}
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[Browsable(false)]
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[DefaultValue(typeof(Image), "null")]
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public new Image InitialImage { get; set; }
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[Browsable(false)]
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[DefaultValue(typeof(Image), "null")]
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public new Image ErrorImage { get; set; }
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/// <summary>
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/// 构造函数
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/// </summary>
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public UIImageButton()
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{
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InitializeComponent();
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SetDefaultControlStyles();
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SuspendLayout();
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BorderStyle = BorderStyle.None;
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ResumeLayout(false);
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Width = 100;
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Height = 35;
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Version = UIGlobal.Version;
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Cursor = Cursors.Hand;
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}
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public string Version { get; }
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/// <summary>
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/// 鼠标移上图片
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/// </summary>
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[DefaultValue(typeof(Image), "null")]
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public Image ImageHover
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{
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get => imageHover;
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set
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{
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imageHover = value;
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Invalidate();
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}
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}
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/// <summary>
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/// 鼠标按下图片
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/// </summary>
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[DefaultValue(typeof(Image), "null")]
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public Image ImagePress
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{
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get => imagePress;
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set
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{
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imagePress = value;
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Invalidate();
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}
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}
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/// <summary>
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/// 不可用时图片
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/// </summary>
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[DefaultValue(typeof(Image), "null")]
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public Image ImageDisabled
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{
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get => imageDisabled;
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set
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{
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imageDisabled = value;
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Invalidate();
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}
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}
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/// <summary>
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/// 不可用时图片
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/// </summary>
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[DefaultValue(typeof(Image), "null")]
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public Image ImageSelected
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{
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get => imageSelected;
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set
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{
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imageSelected = value;
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Invalidate();
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}
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}
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/// <summary>
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/// 是否选中
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/// </summary>
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[DefaultValue(typeof(bool), "false")]
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public bool Selected
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{
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get => selected;
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set
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{
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if (selected != value)
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{
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selected = value;
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Invalidate();
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}
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}
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}
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/// <summary>
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/// 清理所有正在使用的资源。
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/// </summary>
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/// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
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protected override void Dispose(bool disposing)
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{
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if (disposing)
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{
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components?.Dispose();
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}
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base.Dispose(disposing);
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}
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private void SetDefaultControlStyles()
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{
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SetStyle(ControlStyles.UserPaint, true);
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SetStyle(ControlStyles.AllPaintingInWmPaint, true);
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SetStyle(ControlStyles.DoubleBuffer, true);
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UpdateStyles();
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}
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/// <summary>
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/// 鼠标按下
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/// </summary>
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/// <param name="e">e</param>
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protected override void OnMouseDown(MouseEventArgs e)
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{
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base.OnMouseDown(e);
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IsPress = true;
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Invalidate();
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}
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/// <summary>
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/// 鼠标弹起
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/// </summary>
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/// <param name="e">e</param>
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protected override void OnMouseUp(MouseEventArgs e)
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{
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base.OnMouseUp(e);
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IsPress = false;
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Invalidate();
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}
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/// <summary>
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/// 鼠标进入
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/// </summary>
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/// <param name="e">e</param>
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protected override void OnMouseEnter(EventArgs e)
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{
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base.OnMouseEnter(e);
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if (!DesignMode)
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{
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Cursor = Cursors.Hand;
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}
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IsHover = true;
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Invalidate();
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}
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/// <summary>
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/// 鼠标离开
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/// </summary>
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/// <param name="e">e</param>
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protected override void OnMouseLeave(EventArgs e)
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{
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base.OnMouseLeave(e);
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IsHover = false;
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IsPress = false;
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Invalidate();
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}
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public Point imageOffset;
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[DefaultValue(typeof(Point),"0, 0")]
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public Point ImageOffset
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{
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get => imageOffset;
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set
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{
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imageOffset = value;
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Invalidate();
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}
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}
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/// <summary>
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/// 绘制按钮
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/// </summary>
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/// <param name="pe">pe</param>
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protected override void OnPaint(PaintEventArgs pe)
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{
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Image img = Image;
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if (!Enabled)
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{
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img = imageDisabled;
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}
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else
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{
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if (IsPress)
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{
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img = imagePress;
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}
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else if (IsHover)
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{
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img = imageHover;
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}
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if (Selected)
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{
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img = imageSelected;
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}
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}
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if (img == null)
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{
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img = Image;
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}
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if (img != null)
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{
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if (SizeMode == PictureBoxSizeMode.Normal)
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pe.Graphics.DrawImage(img, new Rectangle(ImageOffset.X, ImageOffset.Y, img.Width, img.Height));
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if (SizeMode == PictureBoxSizeMode.StretchImage)
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pe.Graphics.DrawImage(img, new Rectangle(0, 0, Width, Height));
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if (SizeMode == PictureBoxSizeMode.AutoSize)
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{
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Width = img.Width;
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Height = img.Height;
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pe.Graphics.DrawImage(img, new Rectangle(0, 0, img.Width, img.Height));
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}
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if (SizeMode == PictureBoxSizeMode.Zoom)
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pe.Graphics.DrawImage(img, new Rectangle(0, 0, img.Width, img.Height));
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if (SizeMode == PictureBoxSizeMode.CenterImage)
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pe.Graphics.DrawImage(img, new Rectangle((Width - img.Width) / 2, (Height - img.Height) / 2, img.Width, img.Height));
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}
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else
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{
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base.OnPaint(pe);
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}
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SizeF sf = pe.Graphics.MeasureString(Text, Font);
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switch (TextAlign)
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{
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case ContentAlignment.TopLeft:
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pe.Graphics.DrawString(text, Font, ForeColor, Padding.Left, Padding.Top);
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break;
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case ContentAlignment.TopCenter:
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pe.Graphics.DrawString(text, Font, ForeColor, (Width - sf.Width) / 2, Padding.Top);
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break;
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case ContentAlignment.TopRight:
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pe.Graphics.DrawString(text, Font, ForeColor, Width - Padding.Right - sf.Width, Padding.Top);
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break;
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case ContentAlignment.MiddleLeft:
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pe.Graphics.DrawString(text, Font, ForeColor, Padding.Left, (Height - sf.Height) / 2);
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break;
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case ContentAlignment.MiddleCenter:
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pe.Graphics.DrawString(text, Font, ForeColor, (Width - sf.Width) / 2, (Height - sf.Height) / 2);
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break;
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case ContentAlignment.MiddleRight:
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pe.Graphics.DrawString(text, Font, ForeColor, Width - Padding.Right - sf.Width, (Height - sf.Height) / 2);
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break;
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case ContentAlignment.BottomLeft:
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pe.Graphics.DrawString(text, Font, ForeColor, Padding.Left, Height - Padding.Bottom - sf.Height);
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break;
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case ContentAlignment.BottomCenter:
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pe.Graphics.DrawString(text, Font, ForeColor, (Width - sf.Width) / 2, Height - Padding.Bottom - sf.Height);
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break;
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case ContentAlignment.BottomRight:
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pe.Graphics.DrawString(text, Font, ForeColor, Width - Padding.Right - sf.Width, Height - Padding.Bottom - sf.Height);
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break;
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}
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}
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#region 组件设计器生成的代码
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/// <summary>
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/// 设计器支持所需的方法 - 不要
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/// 使用代码编辑器修改此方法的内容。
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/// </summary>
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private void InitializeComponent()
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{
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components = new Container();
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}
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#endregion 组件设计器生成的代码
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}
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} |