为C#设计自定义字体对话框/选择器,以过滤掉非真实类型的字体 [英] Designing a Custom Font Dialog/Selector for C# that filters out non true type fonts
问题描述
该控件工作正常,但我需要一个大小和样式选择器为此对话框。我正在发布当前的代码。请帮助我添加一个大小和一个样式选择器。它也可能对你有用。
public class FontListBox:ListBox
{
private List< Font& ; _fonts = new List< Font>();
私人刷_foreBrush;
public FontListBox()
{
DrawMode = DrawMode.OwnerDrawFixed;
ItemHeight = 20;
foreach(FontFamily.Families中的FontFamily ff)
{
//确定第一个可用样式,因为所有字体都不支持所有样式
FontStyle? availableStyle = null;
foreach(Enum.GetValues(typeof(FontStyle)中的FontStyle样式))
{
if(ff.IsStyleAvailable(style))
{
availableStyle = style;
break;
}
}
if(availableStyle.HasValue)
{
Font font = null;
尝试
{
//在这里执行您自己的字体初始化
//丢弃不喜欢的字体:-)
font = new Font(ff, 12,availableStyle.Value);
}
catch
{
}
if(font!= null)
{
_fonts.Add(font);
Items.Add(font);
}
}
}
}
protected override void Dispose(bool disposal)
{
base.Dispose );
if(_fonts!= null)
{
foreach(_fonts中的字体)
{
font.Dispose();
}
_fonts = null;
}
if(_foreBrush!= null)
{
_foreBrush.Dispose();
_foreBrush = null;
}
}
public override Color ForeColor
{
get
{
return base.ForeColor;
}
set
{
base.ForeColor = value;
if(_foreBrush!= null)
{
_foreBrush.Dispose();
}
_foreBrush = null;
}
}
private Brush ForeBrush
{
get
{
if(_foreBrush == null)
{
_foreBrush = new SolidBrush(ForeColor);
}
return _foreBrush;
}
}
protected override void OnDrawItem(DrawItemEventArgs e)
{
base.OnDrawItem(e);
if(e.Index <0)
return;
e.DrawBackground();
e.DrawFocusRectangle();
矩形边界= e.Bounds;
Font font =(Font)Items [e.Index];
e.Graphics.DrawString(font.Name,font,ForeBrush,bounds.Left,bounds.Top);
}
}
public partial class MyFontDialog:Form
{
private FontListBox _fontListBox;
public MyFontDialog()
{
InitializeComponent();
_fontListBox = new FontListBox();
_fontListBox.Dock = DockStyle.Fill;
Controls.Add(_fontListBox);
}
}
我已经在sourceforge托管了这个项目 https://sourceforge.net/p/newfontpicker/
你可以像这样修改MyFontDialog:
public partial class MyFontDialog:Form
{
private FontListBox _fontListBox;
private ListBox _fontSizeListBox;
public MyFontDialog()
{
// InitializeComponent();
_fontListBox = new FontListBox();
_fontListBox.SelectedIndexChanged + = OnfontListBoxSelectedIndexChanged;
_fontListBox.Size = new Size(200,Height);
Controls.Add(_fontListBox);
_fontSizeListBox = new ListBox();
_fontSizeListBox.Location = new Point(_fontListBox.Width,0);
Controls.Add(_fontSizeListBox);
}
private void OnfontListBoxSelectedIndexChanged(object sender,EventArgs e)
{
_fontSizeListBox.Items.Clear();
Font font = _fontListBox.SelectedItem为Font;
if(font!= null)
{
foreach(Enum.GetValues(typeof(FontStyle))中的FontStyle样式)
{
if(font.FontFamily。 IsStyleAvailable(style))
{
_fontSizeListBox.Items.Add(style);
}
}
}
}
}
它将创建一个列表框,除了字体列表框与可用的字体样式列表。对于大小选择,您可以简单地添加一个列表框,其中包含大小为8,9,10,11,12,14,16,18,20,22,24,26,28,36,48和72的硬编码列表,就像标准的FontDialog,因为我们正在处理真正的类型字体。
Since the inbuilt Font Dialog returns a 'Not a True Type Font' Exception on selecting a Non True Type Font, I'm trying to create a Custom Font Dialog using Font-families which filter out non true type fonts.
The Control is working perfectly but I need a size and style selectors for this dialog. I'm posting the current code. Please help me add a size and a style selector to this. It could also be useful to you.
public class FontListBox : ListBox
{
private List<Font> _fonts = new List<Font>();
private Brush _foreBrush;
public FontListBox()
{
DrawMode = DrawMode.OwnerDrawFixed;
ItemHeight = 20;
foreach (FontFamily ff in FontFamily.Families)
{
// determine the first available style, as all fonts don't support all styles
FontStyle? availableStyle = null;
foreach (FontStyle style in Enum.GetValues(typeof(FontStyle)))
{
if (ff.IsStyleAvailable(style))
{
availableStyle = style;
break;
}
}
if (availableStyle.HasValue)
{
Font font = null;
try
{
// do your own Font initialization here
// discard the one you don't like :-)
font = new Font(ff, 12, availableStyle.Value);
}
catch
{
}
if (font != null)
{
_fonts.Add(font);
Items.Add(font);
}
}
}
}
protected override void Dispose(bool disposing)
{
base.Dispose(disposing);
if (_fonts != null)
{
foreach (Font font in _fonts)
{
font.Dispose();
}
_fonts = null;
}
if (_foreBrush != null)
{
_foreBrush.Dispose();
_foreBrush = null;
}
}
public override Color ForeColor
{
get
{
return base.ForeColor;
}
set
{
base.ForeColor = value;
if (_foreBrush != null)
{
_foreBrush.Dispose();
}
_foreBrush = null;
}
}
private Brush ForeBrush
{
get
{
if (_foreBrush == null)
{
_foreBrush = new SolidBrush(ForeColor);
}
return _foreBrush;
}
}
protected override void OnDrawItem(DrawItemEventArgs e)
{
base.OnDrawItem(e);
if (e.Index < 0)
return;
e.DrawBackground();
e.DrawFocusRectangle();
Rectangle bounds = e.Bounds;
Font font = (Font)Items[e.Index];
e.Graphics.DrawString(font.Name, font, ForeBrush, bounds.Left, bounds.Top);
}
}
public partial class MyFontDialog : Form
{
private FontListBox _fontListBox;
public MyFontDialog()
{
InitializeComponent();
_fontListBox = new FontListBox();
_fontListBox.Dock = DockStyle.Fill;
Controls.Add(_fontListBox);
}
}
I have hosted the project at sourceforge https://sourceforge.net/p/newfontpicker/
You could modify the MyFontDialog like this:
public partial class MyFontDialog : Form
{
private FontListBox _fontListBox;
private ListBox _fontSizeListBox;
public MyFontDialog()
{
//InitializeComponent();
_fontListBox = new FontListBox();
_fontListBox.SelectedIndexChanged += OnfontListBoxSelectedIndexChanged;
_fontListBox.Size = new Size(200, Height);
Controls.Add(_fontListBox);
_fontSizeListBox = new ListBox();
_fontSizeListBox.Location = new Point(_fontListBox.Width, 0);
Controls.Add(_fontSizeListBox);
}
private void OnfontListBoxSelectedIndexChanged(object sender, EventArgs e)
{
_fontSizeListBox.Items.Clear();
Font font = _fontListBox.SelectedItem as Font;
if (font != null)
{
foreach (FontStyle style in Enum.GetValues(typeof(FontStyle)))
{
if (font.FontFamily.IsStyleAvailable(style))
{
_fontSizeListBox.Items.Add(style);
}
}
}
}
}
It will create a list box aside the font list box with the list of available font styles. As for the size choice, you can simply add a list box with hardcoded list of size: 8,9,10,11,12, 14,16,18,20,22,24,26,28,36,48 and 72, just like the standard FontDialog, since we're dealing with true type fonts.
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