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https://github.com/xcp-ng/xenadmin.git
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d81538d43d
a autowrap-on-resize radiobutton. Also, removed badly aligned label and appended its text to the radiobutton text. Signed-off-by: Konstantina Chremmou <konstantina.chremmou@citrix.com>
101 lines
4.0 KiB
C#
101 lines
4.0 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.Collections.Generic;
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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 RadioButton which automatically changes its height to accomodate its
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/// text when in AutoSize mode. This is useful as it enables a multi-line
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/// RadioButton to be put in a TableLayoutPanel. The table can then be made
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/// to vertically shrink/grow depending on the label text.
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/// Code based on http://blogs.msdn.com/b/jfoscoding/archive/2005/11/14/492554.aspx
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/// </summary>
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public class AutoHeightRadioButton : RadioButton
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{
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Size cachedSizeOfOneLineOfText = Size.Empty;
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Dictionary<Size, Size> preferredSizeHash = new Dictionary<Size, Size>();
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private void CacheTextSize()
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{
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preferredSizeHash.Clear();
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cachedSizeOfOneLineOfText = string.IsNullOrEmpty(Text)
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? Size.Empty
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: TextRenderer.MeasureText(Text, Font, new Size(Int32.MaxValue, Int32.MaxValue), TextFormatFlags.WordBreak);
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}
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protected override void OnTextChanged(EventArgs e)
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{
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base.OnTextChanged(e);
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CacheTextSize();
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//this seems to be necessary in non-EN environments so it can resize correctly
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PerformLayout();
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}
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protected override void OnFontChanged(EventArgs e)
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{
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base.OnFontChanged(e);
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CacheTextSize();
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//this seems to be necessary in non-EN environments so it can resize correctly
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PerformLayout();
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}
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public override Size GetPreferredSize(Size proposedSize)
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{
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Size prefSize = base.GetPreferredSize(proposedSize);
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if (prefSize.Width > proposedSize.Width &&
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!string.IsNullOrEmpty(Text) &&
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(!proposedSize.Width.Equals(Int32.MaxValue) || !proposedSize.Height.Equals(Int32.MaxValue)))
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{
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Size bordersAndPadding = prefSize - cachedSizeOfOneLineOfText;
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Size newConstraints = proposedSize - bordersAndPadding;
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if (preferredSizeHash.ContainsKey(newConstraints))
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{
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prefSize = preferredSizeHash[newConstraints];
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}
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else
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{
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prefSize = bordersAndPadding + TextRenderer.MeasureText(Text, Font, newConstraints, TextFormatFlags.WordBreak);
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preferredSizeHash[newConstraints] = prefSize;
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}
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}
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return prefSize;
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}
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}
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}
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