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122 lines
4.5 KiB
C#
122 lines
4.5 KiB
C#
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/*
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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.Diagnostics;
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Media;
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using CommonWPF;
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namespace SourceGenWPF.WpfGui {
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/// <summary>
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/// Simple font picker.
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/// </summary>
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public partial class FontPicker : Window {
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// Used as ItemsSource for the ListBox.
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public List<FontFamily> MonoFontFamilies { get; private set; }
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// This is bound directly to the ListBox SelectedItem property.
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public FontFamily SelectedFamily { get; set; }
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// Pulled out of combo box.
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public int SelectedSize { get; private set; }
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public FontPicker(Window owner, string initialFamily, int initialSize) {
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InitializeComponent();
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Owner = owner;
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DataContext = this;
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GenerateMonoFontList(initialFamily);
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int selIndex = 0;
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string sizeStr = initialSize.ToString();
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for (int i = 0; i < sizeComboBox.Items.Count; i++) {
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ComboBoxItem item = (ComboBoxItem)sizeComboBox.Items[i];
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if (sizeStr.Equals(item.Content)) {
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selIndex = i;
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break;
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}
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}
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sizeComboBox.SelectedIndex = selIndex;
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}
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/// <summary>
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/// Populates the MonoFontFamilies list, by finding mono-spaced fonts in the system
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/// font set.
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/// </summary>
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/// <param name="initialFamily">Name of family to select.</param>
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private void GenerateMonoFontList(string initialFamily) {
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SortedList<string, FontFamily> tmpList = new SortedList<string, FontFamily>();
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foreach (Typeface typ in Fonts.SystemTypefaces) {
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if (typ.Style != FontStyles.Normal) {
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continue;
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}
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if (typ.Weight != FontWeights.Normal) {
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continue;
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}
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if (typ.Stretch != FontStretches.Normal) {
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continue;
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}
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string familyName = typ.FontFamily.ToString();
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if (string.IsNullOrEmpty(familyName)) {
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continue;
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}
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// Unscientific and prone to false-positives. The only alternative seems
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// to be a PInvoke approach using System.Drawing, which is meant for WinForms
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// (https://stackoverflow.com/a/225027/294248). Feels a bit weird, but fonts
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// should be equally mono-spaced regardless of system. The System.Drawing
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// FontFamily would be mapped back to System.Windows.Media FontFamily by name.
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const string SAMPLE_STRING1 = "M#w";
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const string SAMPLE_STRING2 = "i.|";
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if (Helper.MeasureStringWidth(SAMPLE_STRING1, typ, 10) !=
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Helper.MeasureStringWidth(SAMPLE_STRING2, typ, 10)) {
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continue;
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}
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tmpList.Add(familyName, typ.FontFamily);
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if (familyName.Equals(initialFamily)) {
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SelectedFamily = typ.FontFamily;
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}
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}
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MonoFontFamilies = new List<FontFamily>();
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foreach (FontFamily fam in tmpList.Values) {
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MonoFontFamilies.Add(fam);
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}
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// Select the first entry if nothing else is selected.
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if (SelectedFamily == null && MonoFontFamilies.Count > 0) {
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SelectedFamily = MonoFontFamilies[0];
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}
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}
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private void Window_Loaded(object sender, RoutedEventArgs e) {
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fontFamilyListBox.Focus();
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}
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private void OkButton_Click(object sender, RoutedEventArgs e) {
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ComboBoxItem item = (ComboBoxItem)sizeComboBox.SelectedItem;
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SelectedSize = int.Parse((string)item.Content);
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DialogResult = true;
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}
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}
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}
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