// Peter Bartok pbartok@novell.com
//
//
-// $Revision: 1.3 $
+// $Revision: 1.4 $
// $Modtime: $
// $Log: CheckBox.cs,v $
+// Revision 1.4 2004/08/31 18:48:31 pbartok
+// - Finished (famous last words)
+//
// Revision 1.3 2004/08/30 20:42:26 pbartok
// - Implemented CheckBox drawing code
//
//
//
-// NOT COMPLETE
+// COMPLETE
using System;
using System.Drawing;
appearance = Appearance.Normal;
auto_check = true;
check_alignment = ContentAlignment.MiddleLeft;
+
+ SizeChanged+=new System.EventHandler(RedrawEvent);
+ TextChanged+=new System.EventHandler(RedrawEvent);
}
#endregion // Public Constructors
if (AppearanceChanged != null) {
AppearanceChanged(this, EventArgs.Empty);
}
+ CheckRedraw();
+ Refresh();
}
}
}
check_alignment = value;
CheckRedraw();
+ Refresh();
}
}
}
if (value && (check_state != CheckState.Checked)) {
check_state = CheckState.Checked;
CheckRedraw();
+ Refresh();
OnCheckedChanged(EventArgs.Empty);
} else if (!value && (check_state != CheckState.Unchecked)) {
check_state = CheckState.Unchecked;
CheckRedraw();
+ Refresh();
OnCheckedChanged(EventArgs.Empty);
}
}
OnCheckStateChanged(EventArgs.Empty);
CheckRedraw();
+ Refresh();
}
}
}
if (value != text_alignment) {
text_alignment = value;
CheckRedraw();
+ Refresh();
}
}
}
#region Public Instance Methods
public override string ToString() {
- if (CheckState == CheckState.Unchecked) {
- return "CheckBox (unchecked)";
- } else if (CheckState == CheckState.Checked) {
- return "CheckBox (checked)";
- } else {
- return "CheckBox (state indeterminate)";
- }
+ return base.ToString() + ", CheckState: " + (int)check_state;
}
#endregion // Public Instance Methods
}
protected virtual void OnCheckedChanged(EventArgs e) {
-Console.WriteLine("Checked changed");
if (CheckedChanged != null) {
CheckedChanged(this, e);
}
}
protected virtual void OnCheckStateChanged(EventArgs e) {
-Console.WriteLine("CheckState changed");
if (CheckStateChanged != null) {
CheckStateChanged(this, e);
}
}
protected override void OnClick(EventArgs e) {
-Console.WriteLine("Got click event");
if (auto_check) {
switch(check_state) {
case CheckState.Unchecked: {
break;
}
}
- CheckRedraw();
}
- base.OnClick (e);
}
protected override void OnHandleCreated(EventArgs e) {
#region Internal drawing code
internal override bool CheckRedraw() {\r
- return base.CheckRedraw ();\r
+ this.needs_redraw = true;\r
+\r
+ return true;\r
}\r
\r
internal override void Redraw() {\r
Rectangle text_rectangle;
Rectangle checkbox_rectangle;
SolidBrush sb;
-Console.WriteLine("REDRAWING");
+
client_rectangle = ClientRectangle;
text_rectangle = client_rectangle;
checkbox_rectangle = new Rectangle(text_rectangle.X, text_rectangle.Y, checkmark_size, checkmark_size);
ControlPaint.DrawFocusRectangle(this.DeviceContext, text_rectangle);
}
}\r
- #endregion // Internal drawing code
- }
-}
-#if not
- public class CheckBox : ButtonBase {
-
- // private fields
- Appearance appearance;
- bool autoCheck;
- ContentAlignment checkAlign;
- bool _checked;
- CheckState checkState;
- bool threeState;
- ContentAlignment textAlign;
- Rectangle text_rectangle;
- Rectangle checkbox_rectangle;
- StringFormat textFormat;
- int checkmark_size=13; // Keep it configurable for accessability
- Graphics canvasDC;
- Bitmap canvasBmp;
-
- // --- Constructor ---
- public CheckBox() : base()
- {
-
- appearance = Appearance.Normal;
- autoCheck = true;
- checkAlign = ContentAlignment.MiddleLeft;
- _checked = false;
- checkState = CheckState.Unchecked;
- threeState = false;
-
- canvasBmp = new Bitmap(ClientRectangle.Width, ClientRectangle.Height);
- canvasDC = Graphics.FromImage(canvasBmp);
-
- /* Set defaults for drawing text... */
- textAlign = ContentAlignment.MiddleLeft;
- textFormat = new StringFormat();
- textFormat.Alignment=StringAlignment.Near;
- textFormat.LineAlignment=StringAlignment.Center;
- text_rectangle = ClientRectangle;
- text_rectangle.X+=checkmark_size;
- text_rectangle.Width-=checkmark_size;
-
- /* ... and for drawing our checkbox */
- checkbox_rectangle.X=ClientRectangle.Left;
- checkbox_rectangle.Y=(ClientRectangle.Bottom-ClientRectangle.Top)/2-checkmark_size/2;
- checkbox_rectangle.Width=checkmark_size;
- checkbox_rectangle.Height=checkmark_size;
-
- SizeChanged+=new System.EventHandler(CheckboxSizeChanged);
- GotFocus+=new System.EventHandler(CheckboxUpdate);
- LostFocus+=new System.EventHandler(CheckboxUpdate);
- TextChanged+=new System.EventHandler(CheckboxUpdate);
-
- SubClassWndProc_ = true;
- SetStyle (ControlStyles.UserPaint | ControlStyles.AllPaintingInWmPaint, true);
- callWinControlProcMask &= ~(CallWinControlProcMask.MOUSE_MESSAGES | CallWinControlProcMask.KEYBOARD_MESSAGES);
- }
-
- // --- CheckBox Properties ---
-
- public CheckState CheckState {
- get { return checkState; }
- set {
- if( checkState != value) {
-
- checkState = value;
- bool oldChecked = _checked;
-
- if( checkState == CheckState.Unchecked) {
- _checked = false;
- }
- else {
- _checked = true;
- }
-
- if( oldChecked != _checked) {
- OnCheckedChanged(new EventArgs());
- }
-
- OnCheckStateChanged(new EventArgs());
- }
- }
- }
-
- [MonoTODO]
- public override ContentAlignment TextAlign {
- get {
- return textAlign;
- }
- set {
- textAlign = value;
- UpdateCheckbox();
- }
- }
-
- public bool ThreeState {
- get {
- return threeState;
- }
-
- set {
- threeState = value;
- }
- }
-
- // --- CheckBox methods ---
-
- protected override AccessibleObject CreateAccessibilityInstance()
- {
- throw new NotImplementedException ();
- }
-
-
- // [event methods]
- [MonoTODO]
- protected virtual void OnAppearanceChanged(EventArgs e)
- {
- if (AppearanceChanged != null) {
- AppearanceChanged(this, e);
- }
- }
-
- [MonoTODO]
- protected virtual void OnCheckedChanged(EventArgs e)
- {
- //FIXME:
- if(CheckedChanged != null) {
- CheckedChanged( this, e);
- }
- }
-
- [MonoTODO]
- protected virtual void OnCheckStateChanged(EventArgs e)
- {
- //FIXME:
- if(CheckStateChanged != null) {
- CheckStateChanged( this, e);
- }
- }
-
- [MonoTODO]
- protected override void OnClick(EventArgs e)
- {
- CheckState = (CheckState)Win32.SendMessage(Handle, (int)ButtonMessages.BM_GETCHECK, 0, 0);
- base.OnClick(e);
- }
-
- [MonoTODO]
- protected override void OnHandleCreated(EventArgs e)
- {
- //FIXME:
- base.OnHandleCreated(e);
- Win32.SendMessage(Handle, (int)ButtonMessages.BM_SETCHECK, (int)checkState, 0);
- }
-
-// protected override void OnMouseDown (MouseEventArgs e)
-// {
-// base.OnMouseDown (e);
-// }
-
- [MonoTODO]
- protected override void OnMouseUp(MouseEventArgs mevent)
- {
- if (ThreeState) {
- switch (CheckState) {
- case CheckState.Unchecked: {
- CheckState = CheckState.Checked;
- break;
- }
-
- case CheckState.Indeterminate: {
- CheckState = CheckState.Unchecked;
- break;
- }
-
- case CheckState.Checked: {
- CheckState = CheckState.Indeterminate;
- break;
- }
- }
- } else {
- Checked = Checked ? false : true;
- }
- CheckboxRedraw();
- Invalidate();
- base.OnMouseUp(mevent);
- }
- // end of [event methods]
-
-
- [MonoTODO]
- protected override bool ProcessMnemonic(char charCode)
- {
- //FIXME:
- return base.ProcessMnemonic(charCode);
- }
-
- [MonoTODO]
- //FIXME: do a better tostring
- public override string ToString()
- {
- if (Checked) {
- return "CheckBox" + " Checked";
- } else {
- return "CheckBox" + " Unchecked";
- }
- }
-
- internal override void ButtonPaint (PaintEventArgs e)
- {
- if (canvasBmp!=null) {
- e.Graphics.DrawImage(canvasBmp, e.ClipRectangle, e.ClipRectangle, GraphicsUnit.Pixel);
- }
- }
-
- /// --- CheckBox events ---
- public event EventHandler AppearanceChanged;
- public event EventHandler CheckedChanged;
- public event EventHandler CheckStateChanged;
-
- /// --- public class CheckBox.CheckBoxAccessibleObject : AccessibleObject ---
- /// the class is only used for .NET framework
- ///
- public class CheckBoxAccessibleObject : AccessibleObject {
- }
-
- private void UpdateCheckbox() {
- /* Calculate the position of text and checkbox rectangle */
- if (appearance!=Appearance.Button) {
- switch(checkAlign) {
- case ContentAlignment.BottomCenter: {
- if (ClientRectangle.Height<checkmark_size*2) {
- ClientSize=new Size(ClientRectangle.Width, checkmark_size*2);
- }
- checkbox_rectangle.X=(ClientRectangle.Right-ClientRectangle.Left)/2-checkmark_size/2;
- checkbox_rectangle.Y=ClientRectangle.Bottom-checkmark_size;
- text_rectangle.X=ClientRectangle.X;
- text_rectangle.Width=ClientRectangle.Width;
- break;
- }
-
- case ContentAlignment.BottomLeft: {
- checkbox_rectangle.X=ClientRectangle.Left;
- checkbox_rectangle.Y=ClientRectangle.Bottom-checkmark_size;
- text_rectangle.X=ClientRectangle.X+checkmark_size;
- text_rectangle.Width=ClientRectangle.Width-checkmark_size;
- break;
- }
-
- case ContentAlignment.BottomRight: {
- checkbox_rectangle.X=ClientRectangle.Right-checkmark_size;
- checkbox_rectangle.Y=ClientRectangle.Bottom-checkmark_size;
- text_rectangle.X=ClientRectangle.X;
- text_rectangle.Width=ClientRectangle.Width-checkmark_size;
- break;
- }
-
- case ContentAlignment.MiddleCenter: {
- checkbox_rectangle.X=(ClientRectangle.Right-ClientRectangle.Left)/2-checkmark_size/2;
- checkbox_rectangle.Y=(ClientRectangle.Bottom-ClientRectangle.Top)/2-checkmark_size/2;
- text_rectangle.X=ClientRectangle.X;
- text_rectangle.Width=ClientRectangle.Width;
- break;
- }
-
- default:
- case ContentAlignment.MiddleLeft: {
- checkbox_rectangle.X=ClientRectangle.Left;
- checkbox_rectangle.Y=(ClientRectangle.Bottom-ClientRectangle.Top)/2-checkmark_size/2;
- text_rectangle.X=ClientRectangle.X+checkmark_size;
- text_rectangle.Width=ClientRectangle.Width-checkmark_size;
- break;
- }
-
- case ContentAlignment.MiddleRight: {
- checkbox_rectangle.X=ClientRectangle.Right-checkmark_size;
- checkbox_rectangle.Y=(ClientRectangle.Bottom-ClientRectangle.Top)/2-checkmark_size/2;
- text_rectangle.X=ClientRectangle.X;
- text_rectangle.Width=ClientRectangle.Width-checkmark_size;
- break;
- }
-
- case ContentAlignment.TopCenter: {
- if (ClientRectangle.Height<checkmark_size*2) {
- ClientSize=new Size(ClientRectangle.Width, checkmark_size*2);
- }
- checkbox_rectangle.X=(ClientRectangle.Right-ClientRectangle.Left)/2-checkmark_size/2;
- checkbox_rectangle.Y=ClientRectangle.Top;
- text_rectangle.X=ClientRectangle.X;
- text_rectangle.Y=checkmark_size;
- text_rectangle.Width=ClientRectangle.Width;
- text_rectangle.Height=ClientRectangle.Height-checkmark_size;
- break;
- }
-
- case ContentAlignment.TopLeft: {
- checkbox_rectangle.X=ClientRectangle.Left;
- checkbox_rectangle.Y=ClientRectangle.Top;
- text_rectangle.X=ClientRectangle.X+checkmark_size;
- text_rectangle.Width=ClientRectangle.Width-checkmark_size;
- break;
- }
-
- case ContentAlignment.TopRight: {
- checkbox_rectangle.X=ClientRectangle.Right-checkmark_size;
- checkbox_rectangle.Y=ClientRectangle.Top;
- text_rectangle.X=ClientRectangle.X;
- text_rectangle.Width=ClientRectangle.Width-checkmark_size;
- break;
- }
- }
- } else {
- text_rectangle.X=ClientRectangle.X;
- text_rectangle.Width=ClientRectangle.Width;
- }
-
- /* Set the horizontal alignment of our text */
- switch(textAlign) {
- case ContentAlignment.BottomLeft:
- case ContentAlignment.MiddleLeft:
- case ContentAlignment.TopLeft: {
- textFormat.Alignment=StringAlignment.Near;
- break;
- }
-
- case ContentAlignment.BottomCenter:
- case ContentAlignment.MiddleCenter:
- case ContentAlignment.TopCenter: {
- textFormat.Alignment=StringAlignment.Center;
- break;
- }
-
- case ContentAlignment.BottomRight:
- case ContentAlignment.MiddleRight:
- case ContentAlignment.TopRight: {
- textFormat.Alignment=StringAlignment.Far;
- break;
- }
- }
-
- /* Set the vertical alignment of our text */
- switch(textAlign) {
- case ContentAlignment.TopLeft:
- case ContentAlignment.TopCenter:
- case ContentAlignment.TopRight: {
- textFormat.LineAlignment=StringAlignment.Near;
- break;
- }
-
- case ContentAlignment.BottomLeft:
- case ContentAlignment.BottomCenter:
- case ContentAlignment.BottomRight: {
- textFormat.LineAlignment=StringAlignment.Far;
- break;
- }
- case ContentAlignment.MiddleLeft:
- case ContentAlignment.MiddleCenter:
- case ContentAlignment.MiddleRight: {
- textFormat.LineAlignment=StringAlignment.Center;
- break;
- }
- }
- CheckboxRedraw();
- Invalidate();
+ private void RedrawEvent(object sender, System.EventArgs e) {
+ CheckRedraw();
}
-
- private void CheckboxRedraw() {
- SolidBrush sb;
-
- /* Build the image representing the control */
-
- if (canvasDC!=null) {
- canvasDC.Dispose();
- }
- if (canvasBmp!=null) {
- canvasBmp.Dispose();
- }
-
- if (ClientRectangle.Width<1 || ClientRectangle.Height<1) {
- return;
- }
- canvasBmp = new Bitmap(ClientRectangle.Width, ClientRectangle.Height);
- canvasDC = Graphics.FromImage(canvasBmp);
-
- sb=new SolidBrush(BackColor);
- canvasDC.FillRectangle(sb, ClientRectangle);
- sb.Dispose();
-
- ButtonState state = ButtonState.Normal;
- if (FlatStyle == FlatStyle.Flat) {
- state |= ButtonState.Flat;
- }
-
- if (Checked) {
- state |= ButtonState.Checked;
- }
- if (ThreeState && (CheckState == CheckState.Indeterminate)) {
- state |= ButtonState.Checked;
- state |= ButtonState.Pushed;
- }
-
- if (appearance!=Appearance.Button) {
- ControlPaint.DrawCheckBox(canvasDC, checkbox_rectangle, state);
- } else {
- ControlPaint.DrawButton(canvasDC, text_rectangle, state);
- }
-
- /* Place the text; to be compatible with Windows place it after the checkbox has been drawn */
- sb=new SolidBrush(base.foreColor);
- canvasDC.DrawString(Text, Font, sb, text_rectangle, textFormat);
- sb.Dispose();
-
- if (Focused) {
- ControlPaint.DrawFocusRectangle(canvasDC, text_rectangle);
- }
- }
-
- private void CheckboxUpdate(object sender, System.EventArgs e) {
- /* Force recalculation of text & checkbox rectangles */
- UpdateCheckbox();
- }
-
- private void CheckboxSizeChanged(object sender, System.EventArgs e)
- {
- /* Force recalculation of text & checkbox rectangles */
- text_rectangle.Y=ClientRectangle.Y;
- text_rectangle.Height=ClientRectangle.Height;
- UpdateCheckbox();
- }
+ #endregion // Internal drawing code
}
-
-
}
-#endif
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