// Jordi Mas i Hernandez, jordi@ximian.com
// Peter Bartok, pbartok@novell.com
//
-// TODO:
-// - The AutoSize functionality needs missing control functions to be implemented
-// - Draw BorderStyle and FlatStyle
//
-// Based on work by:
-// Daniel Carrera, dcarrera@math.toronto.edu (stubbed out)
-//
-//
-// $Revision: 1.11 $
+// $Revision: 1.12 $
// $Modtime: $
// $Log: Label.cs,v $
+// Revision 1.12 2004/09/01 15:10:10 jordi
+// fixes method signatures, new methods, events, fixes autosize
+//
// Revision 1.11 2004/08/21 22:30:53 pbartok
// - Signature fixes
//
{
public class Label : Control
{
- private Image background_image;
private BorderStyle border_style;
- private bool autoSize;
- private Image image;
+ private bool autosize;
+ private Image image;
private bool render_transparent;
private FlatStyle flat_style;
private int preferred_height;
private int preferred_width;
- private bool tab_stop;
private bool use_mnemonic;
private int image_index = -1;
private ImageList image_list;
- internal Rectangle paint_area;
internal ContentAlignment image_align;
- internal StringFormat string_format;
+ internal StringFormat string_format;
internal ContentAlignment text_align;
+ protected Rectangle paint_area = new Rectangle ();
+ static SizeF req_witdthsize = new SizeF (0,0);
#region Events
public event EventHandler AutoSizeChanged;
+ public new event EventHandler BackgroundImageChanged;
+ public new event EventHandler ImeModeChanged; \r
+ public new event KeyEventHandler KeyDown; \r
+ public new event KeyPressEventHandler KeyPress; \r
+ public new event KeyEventHandler KeyUp;
+ public new event EventHandler TabStopChanged;
public event EventHandler TextAlignChanged;
#endregion
- public Label () : base ()
+ public Label ()
{
// Defaults in the Spec
- autoSize = false;
- border_style = BorderStyle.None;
+ autosize = false;
+ border_style = BorderStyle.None;
string_format = new StringFormat();
TextAlign = ContentAlignment.TopLeft;
image = null;
- UseMnemonic = true;
+ UseMnemonic = true;
image_list = null;
- paint_area = new Rectangle ();
image_align = ContentAlignment.MiddleCenter;
- set_usemnemonic (UseMnemonic);
+ SetUseMnemonic (UseMnemonic);
BackColor = ThemeEngine.Current.ColorButtonFace;
ForeColor = ThemeEngine.Current.ColorWindowText;
TextAlignChanged = null;
SetStyle (ControlStyles.ResizeRedraw, true);
+
+ Resize += new EventHandler (OnResizeLB);
+ HandleCreated += new EventHandler (OnHandleCreatedLB);
}
#region Public Properties
public virtual bool AutoSize {
- get { return autoSize; }
+ get { return autosize; }
set {
- if (autoSize == value)
+ if (autosize == value)
return;
-
- autoSize = value;
+
+ autosize = value;
CalcAutoSize ();
Refresh ();
public override Image BackgroundImage {
get {
- return background_image;
+ return base.BackgroundImage;
}
set {
- background_image = value;
+ if (base.BackgroundImage == value)
+ return;
+
+ if (BackgroundImageChanged != null)
+ BackgroundImageChanged (this, EventArgs.Empty);
+
+ base.BackgroundImage = value;
Refresh ();
}
}
}
}
+ protected override CreateParams CreateParams {
+ get { return base.CreateParams;}
+ }
+
+ protected override ImeMode DefaultImeMode {
+ get { return ImeMode.Disable;}
+ }
+
+ protected override Size DefaultSize {
+ get {return new Size (100,23);}
+ }
public FlatStyle FlatStyle {
get {
return flat_style;
}
- set {
+ set {
if (!Enum.IsDefined (typeof (FlatStyle), value))
throw new InvalidEnumArgumentException (string.Format("Enum argument value '{0}' is not valid for FlatStyle", value));
if (flat_style == value)
return;
-
+
flat_style = value;
Refresh ();
}
set {
if (image == value)
return;
-
+
image = value;
Refresh ();
}
if (image_align == value)
return;
-
+
image_align = value;
Refresh ();
}
get { return image_index;}
set {
- if (value < 0 || value>= image_list.Images.Count)
- throw new ArgumentException();
+ if (value < 0 || value>= image_list.Images.Count)
+ throw new ArgumentException();
if (image_index == value)
- return;
-
+ return;
+
image_index = value;
if (ImageList != null && image_index !=-1)
Image = null;
-
+
Refresh ();
}
}
-
public ImageList ImageList {
get { return image_list;}
set {
if (image_list == value)
- return;
+ return;
if (ImageList != null && image_index !=-1)
Image = null;
-
+
Refresh ();
}
}
- private void CalcPreferredHeight ()
- {
- if (font == null) {
- preferred_height = 0;
- return;
+ public new ImeMode ImeMode {
+ get { return base.ImeMode; }
+ set {
+ if (value == ImeMode)
+ return;
+ base.ImeMode = value;
+ if (ImeModeChanged != null)
+ ImeModeChanged (this, EventArgs.Empty);
}
-
- preferred_height = Font.Height;
-
- if (border_style == BorderStyle.None)
- preferred_height += 3;
}
-
+
public virtual int PreferredHeight {
get { return preferred_height; }
}
- private void CalcPreferredWidth ()
- {
- if (font == null) {
- preferred_width = 0;
- return;
- }
-
- SizeF size;
- size = DeviceContext.MeasureString (Text, Font, new SizeF (paint_area.Width,
- paint_area.Height), string_format);
-
- preferred_width = Size.Width;
- }
-
public virtual int PreferredWidth {
get {return preferred_width; }
}
- public bool TabStop {
- get { return tab_stop; }
- set { tab_stop = value; }
+ protected virtual bool RenderTransparent {
+ get { return render_transparent; }
+ set { render_transparent = value;}
+ }
+ \r
+ public new bool TabStop {
+ get { return base.TabStop; }
+ set {
+ if (value == base.TabStop)
+ return;
+
+ base.TabStop = value;
+ if (TabStopChanged != null)
+ TabStopChanged (this, EventArgs.Empty);
+ }
}
public virtual ContentAlignment TextAlign {
}
}
}
-
-
+
public bool UseMnemonic {
get { return use_mnemonic; }
set {
if (use_mnemonic != value) {
use_mnemonic = value;
- set_usemnemonic (use_mnemonic);
+ SetUseMnemonic (use_mnemonic);
Refresh ();
}
}
#endregion
- protected override CreateParams CreateParams {
- get {
- CreateParams createParams = base.CreateParams;
- createParams.ClassName = XplatUI.DefaultClassName;
- createParams.Style = (int)WindowStyles.WS_CHILD | (int)WindowStyles.WS_VISIBLE |(int)WindowStyles.WS_CLIPCHILDREN | (int)WindowStyles.WS_CLIPSIBLINGS;
- return createParams;
- }
- }
-
- protected override Size DefaultSize {
- get {return new Size (100,23);}
- }
-
- protected virtual bool RenderTransparent {
- get { return render_transparent; }
- set { render_transparent = value;}
- }
- protected override ImeMode DefaultImeMode {
- get { return ImeMode.Disable;}
- }
-
- #region Methods
-
+ #region Public Methods
- public override string ToString()
- {
- //FIXME: add name of lable, as well as text. would adding base.ToString work?
- return "Label: " + base.Text;
- }
-
- protected override void Dispose(bool disposing)
- {
- base.Dispose (disposing);
- }
-
-
protected Rectangle CalcImageRenderBounds (Image image, Rectangle area, ContentAlignment img_align)
{
- Rectangle rcImageClip = area;
+ Rectangle rcImageClip = area;
rcImageClip.Inflate (-2,-2);
int X = area.X;
img_align == ContentAlignment.MiddleRight) {
Y += (area.Height - image.Height) / 2;
}
-
+
rcImageClip.X = X;
rcImageClip.Y = Y;
rcImageClip.Width = image.Width;
rcImageClip.Height = image.Height;
-
+
return rcImageClip;
}
-
- protected override AccessibleObject CreateAccessibilityInstance()
- {
- return base.CreateAccessibilityInstance();
- }
+ \r
+ protected override AccessibleObject CreateAccessibilityInstance ()
+ {
+ return base.CreateAccessibilityInstance ();
+ }
-
- protected void DrawImage (Graphics g, Image image, Rectangle area, ContentAlignment img_align)
+ protected override void Dispose(bool disposing)
+ {
+ base.Dispose (disposing);
+ }
+
+ protected void DrawImage (Graphics g, Image image, Rectangle area, ContentAlignment img_align)
{
if (image == null || g == null)
return;
-
- Rectangle rcImageClip = CalcImageRenderBounds (image, area, img_align);
- g.DrawImage (image, rcImageClip.X, rcImageClip.Y, rcImageClip.Width, rcImageClip.Height);
+
+ Rectangle rcImageClip = CalcImageRenderBounds (image, area, img_align);
+
+ if (Enabled)
+ g.DrawImage (image, rcImageClip.X, rcImageClip.Y, rcImageClip.Width, rcImageClip.Height);
+ else
+ ControlPaint.DrawImageDisabled (g, image, rcImageClip.X, rcImageClip.Y, BackColor);
}
protected virtual void OnAutoSizeChanged (EventArgs e)
}
protected override void OnEnabledChanged (EventArgs e)
- {
+ {
base.OnEnabledChanged (e);
}
protected override void OnFontChanged (EventArgs e)
- {
- Console.WriteLine ("OnFontChanged");
+ {
base.OnFontChanged (e);
CalcPreferredHeight ();
}
-
- private void CalcAutoSize ()
- {
- if (IsHandleCreated == false)
- return;
-
- SizeF size;
- size = DeviceContext.MeasureString (Text, Font, new SizeF (paint_area.Width,
- paint_area.Height), string_format);
-
- Width = Size.Width;
- Height = Size.Height;
-
- Invalidate ();
-
- Console.WriteLine ("CalcAutoSize () after " + Size);
- }
-
- internal void Draw ()
- {
- ThemeEngine.Current.DrawLabel (DeviceContext, paint_area, BorderStyle, Text,
- ForeColor, BackColor, Font, string_format, Enabled);
-
- DrawImage (DeviceContext, Image, paint_area, image_align);
- }
-
- private void set_usemnemonic (bool use)
- {
- if (use)
- string_format.HotkeyPrefix = HotkeyPrefix.Show;
- else
- string_format.HotkeyPrefix = HotkeyPrefix.None;
- }
protected override void OnPaint (PaintEventArgs pevent)
if (Width <= 0 || Height <= 0 || Visible == false)
return;
- /* Copies memory drawing buffer to screen*/
- UpdateArea ();
Draw ();
+ // TODO: Imagelist
pevent.Graphics.DrawImage (ImageBuffer, 0, 0);
}
{
base.OnTextChanged (e);
CalcPreferredWidth ();
- Refresh ();
}
protected override void OnVisibleChanged (EventArgs e)
base.OnVisibleChanged (e);
}
- protected override bool ProcessMnemonic(char charCode)
+ protected override bool ProcessMnemonic (char charCode)
{
return base.ProcessMnemonic (charCode);
}
- protected override void OnHandleCreated (EventArgs e)
- {
- base.OnHandleCreated(e);
- //Console.WriteLine ("OnHandleCreated");
-
- UpdateArea ();
- CreateBuffers (Width, Height);
-
- if (AutoSize)
- CalcAutoSize ();
- }
-
- private void UpdateArea ()
- {
- paint_area.X = paint_area.Y = 0;
- paint_area.Width = Width;
- paint_area.Height = Height;
- }
-
-
- protected override void OnResize (EventArgs e)
- {
- //Console.WriteLine ("OnResize");
- base.OnResize (e);
-
- if (Width <= 0 || Height <= 0)
- return;
-
- UpdateArea ();
-
- /* Area for double buffering */
- CreateBuffers (Width, Height);
- }
-
-
-
protected override void SetBoundsCore (int x, int y, int width, int height, BoundsSpecified specified)
{
base.SetBoundsCore (x, y, width, height, specified);
}
+ public override string ToString()
+ {
+ return base.ToString();
+ }
protected override void WndProc(ref Message m)
{
}
}
-#endregion
+ #endregion Public Methods
+
+ #region Private Methods
+
+ private void CalcAutoSize ()
+ {
+ if (IsHandleCreated == false)
+ return;
+
+ CalcPreferredWidth ();
+ CalcPreferredHeight ();
+
+ Width = PreferredWidth;
+ Height = PreferredHeight;
+
+ Invalidate ();
+ }
+
+ private void CalcPreferredHeight ()
+ {
+ preferred_height = Font.Height;
+
+ switch (border_style) {
+ case BorderStyle.None:
+ preferred_height += 3;
+ break;
+ case BorderStyle.FixedSingle:
+ case BorderStyle.Fixed3D:
+ preferred_height += 6;
+ break;
+ default:
+ break;
+ }
+
+ }
+
+ private void CalcPreferredWidth ()
+ {
+ SizeF size;
+ size = DeviceContext.MeasureString (Text, Font, req_witdthsize, string_format);
+ preferred_width = (int) size.Width + 3;
+ }
+
+ internal void Draw ()
+ {
+ paint_area.Width = Width;
+ paint_area.Height = Height;
+
+ ThemeEngine.Current.DrawLabel (DeviceContext, paint_area, BorderStyle, Text,
+ ForeColor, BackColor, Font, string_format, Enabled);
+
+ DrawImage (DeviceContext, Image, paint_area, image_align);
+ }
+
+ private void OnHandleCreatedLB (Object o, EventArgs e)
+ {
+ CreateBuffers (Width, Height);
+
+ if (autosize)
+ CalcAutoSize ();
+ }
+
+ private void OnResizeLB (object o, EventArgs e)
+ {
+ if (Width <= 0 || Height <= 0)
+ return;
+
+ CreateBuffers (Width, Height);
+ }
+
+
+ private void SetUseMnemonic (bool use)
+ {
+ if (use)
+ string_format.HotkeyPrefix = HotkeyPrefix.Show;
+ else
+ string_format.HotkeyPrefix = HotkeyPrefix.None;
+ }
+
+ #endregion Private Methods
}
}
projects / mono.git / commitdiff