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73 lines
3.0 KiB
C#
73 lines
3.0 KiB
C#
/* Copyright (c) Citrix Systems Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms,
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* with or without modification, are permitted provided
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* that the following conditions are met:
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*
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* * Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the
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* following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the
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* following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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using System;
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using System.Drawing;
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using System.Windows.Forms;
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namespace XenAdmin.Controls.Common
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{
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/// <summary>
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/// A label which automatically changes its height to accomodate its <see cref="Text"/> when in AutoSize mode. This is useful
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/// as it enables a multi-line label to be put in a <see cref="TableLayoutPanel"/> - the table can then be made to vertically shrink/grow
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/// depending on the label text.
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/// </summary>
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public partial class AutoHeightLabel : Label
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{
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private const TextFormatFlags _flags = TextFormatFlags.WordBreak;
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private const int _maxHeight = 9999;
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public AutoHeightLabel()
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{
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InitializeComponent();
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}
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protected override void OnHandleCreated(EventArgs e)
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{
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base.OnHandleCreated(e);
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using (var g = Graphics.FromHwnd(Handle))
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{
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var textSize = TextRenderer.MeasureText(g, Text, Font, new Size(Width - Padding.Left - Padding.Right, _maxHeight), _flags);
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Height = textSize.Height + Padding.Top + Padding.Bottom;
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}
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}
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public override Size GetPreferredSize(Size proposedSize)
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{
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using (var g = Graphics.FromHwnd(Handle))
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{
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var textSize = TextRenderer.MeasureText(g, Text, Font, new Size(proposedSize.Width - Padding.Left - Padding.Right, _maxHeight), _flags);
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return new Size(Width, textSize.Height + Padding.Top + Padding.Bottom);
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}
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}
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}
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}
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