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81 lines
3.2 KiB
C#
81 lines
3.2 KiB
C#
/*
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* Copyright 2019 faddenSoft
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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using System;
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using System.Collections.Generic;
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using System.Globalization;
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using System.Windows;
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using System.Windows.Media;
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namespace CommonWPF {
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/// <summary>
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/// Miscellaneous helper functions.
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/// </summary>
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public static class Helper {
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/// <summary>
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/// Measures the size of a string when rendered with the specified parameters. Uses
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/// the current culture, left-to-right flow, and 1 pixel per DIP.
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/// </summary>
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/// <remarks>
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/// The Graphics.MeasureString approach from WinForms doesn't work in WPF, but we can
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/// accomplish the same thing with the FormattedText class.
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/// </remarks>
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/// <seealso cref="https://stackoverflow.com/a/9266288/294248"/>
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/// <param name="str">Text to be displayed.</param>
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/// <param name="fontFamily">Font family for Typeface.</param>
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/// <param name="fontStyle">Font style for Typeface.</param>
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/// <param name="fontWeight">Font weight for Typeface.</param>
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/// <param name="fontStretch">Font stretch for Typeface.</param>
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/// <param name="emSize">Font size.</param>
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/// <returns>Width and height of rendered text.</returns>
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public static Size MeasureString(string str, FontFamily fontFamily, FontStyle fontStyle,
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FontWeight fontWeight, FontStretch fontStretch, double emSize) {
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FormattedText fmt = new FormattedText(
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str,
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CultureInfo.CurrentCulture,
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FlowDirection.LeftToRight,
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new Typeface(fontFamily, fontStyle, fontWeight, fontStretch),
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emSize,
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Brushes.Black,
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new NumberSubstitution(),
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1.0);
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return new Size(fmt.Width, fmt.Height);
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}
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/// <summary>
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/// Measures the size of a string when rendered with the specified parameters. Uses
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/// the current culture, left-to-right flow, and 1 pixel per DIP.
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/// </summary>
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/// <param name="str">Text to be displayed.</param>
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/// <param name="typeface">Font typeface to use.</param>
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/// <param name="emSize">Font size.</param>
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/// <returns>Width of rendered text.</returns>
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public static double MeasureStringWidth(string str, Typeface typeface, double emSize) {
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FormattedText fmt = new FormattedText(
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str,
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CultureInfo.CurrentCulture,
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FlowDirection.LeftToRight,
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typeface,
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emSize,
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Brushes.Black,
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new NumberSubstitution(),
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1.0);
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return fmt.Width;
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}
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}
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}
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