An Introduction to Progr…l Basic 6.0 (4th Edition)/An Introduction to Programming using Visual Basic 6.0.iso/COMMON/TOOLS/VB/CABINETS/MSDAO350.CAB/icontrols/HotButton.class

Java Class File | 1998-01-08 | 5.3 KB | 217 lines

package icontrols;

import com.ms.wd.core.Event;
import com.ms.wd.ui.Control;
import com.ms.wd.ui.Graphics;
import com.ms.wd.ui.IButtonControl;
import com.ms.wd.ui.Image;
import com.ms.wd.ui.MouseEvent;
import com.ms.wd.ui.PaintEvent;
import com.ms.wd.ui.Point;
import com.ms.wd.ui.Rectangle;
import com.ms.wd.win32.Windows;

public class HotButton extends Control implements IButtonControl {
   private boolean m_pressed = false;
   private boolean m_autoSize = false;
   private boolean m_radio = false;
   private boolean m_focus = false;
   private boolean m_stretch = false;
   private Image m_image = null;
   private Point m_imageSize = null;
   private boolean m_enabled = true;
   private ImageDisplayer m_displayer = new ImageDisplayer();
   private static final int CFOCUS = 3;
   private static final int CBORDER = 4;

   protected void onMouseEnter(Event e) {
      if (this.m_enabled) {
         this.m_focus = true;
         if (!this.m_radio && Control.getMouseButtons() != 0) {
            this.m_pressed = true;
         }

         ((Control)this).invalidate();
      }
   }

   protected void onLostFocus(Event e) {
      if (this.m_enabled) {
         this.m_focus = false;
         ((Control)this).invalidate();
      }
   }

   public void setRadio(boolean fRadio) {
      this.m_radio = fRadio;
   }

   public boolean getValue() {
      return this.m_pressed;
   }

   public boolean isEnabled() {
      return this.m_enabled;
   }

   public void setValue(boolean fValue) {
      this.m_pressed = fValue;
      ((Control)this).invalidate();
   }

   public boolean isRadio() {
      return this.m_radio;
   }

   public HotButton() {
      ((Control)this).setBounds(0, 0, 75, 25);
      ((Control)this).setTabStop(true);
      this.m_displayer.setAlignment(68);
   }

   public void onMouseUp(MouseEvent e) {
      if (this.m_enabled) {
         if (!this.m_radio) {
            this.m_pressed = false;
         } else {
            this.m_pressed = !this.m_pressed;
         }

         ((Control)this).invalidate();
         this.performClick();
      }
   }

   public void setStretch(boolean value) {
      if (value != this.m_stretch) {
         value = this.m_stretch;
         if (value) {
            this.m_displayer.setAlignment(Integer.MIN_VALUE);
            this.m_displayer.setStretch(true);
         } else {
            this.m_displayer.setAlignment(68);
            this.m_displayer.setStretch(false);
         }

         ((Control)this).invalidate();
      }

   }

   private void drawDottedRect(Graphics g, int x, int y, int width, int height, int dashLength) {
      for(int cx = x; cx < x + width; cx += dashLength * 2) {
         int cEnd = Math.min(x + width, cx + dashLength);
         g.drawLine(cx, y, cEnd, y);
         g.drawLine(cx, y + height, cEnd, y + height);
      }

      for(int cy = y; cy < y + height; cy += dashLength * 2) {
         int cEnd = Math.min(y + height, cy + dashLength);
         g.drawLine(x, cy, x, cEnd);
         g.drawLine(x + width, cy, x + width, cEnd);
      }

   }

   public boolean isStretch() {
      return this.m_stretch;
   }

   protected void onMouseLeave(Event e) {
      if (this.m_enabled) {
         this.m_focus = false;
         if (!this.m_radio) {
            this.m_pressed = false;
            ((Control)this).invalidate();
         }

         ((Control)this).invalidate();
      }
   }

   protected void onGotFocus(Event e) {
      if (this.m_enabled) {
         this.m_focus = true;
         ((Control)this).invalidate();
      }
   }

   protected void onMouseDown(MouseEvent e) {
      if (this.m_enabled) {
         if (!this.m_radio) {
            this.m_pressed = true;
            ((Control)this).invalidate();
         }

         super.onMouseDown(e);
      }
   }

   public Image getImage() {
      return this.m_image;
   }

   public boolean isAutoSize() {
      return this.m_autoSize;
   }

   protected void onResize(Event event) {
      ((Control)this).invalidate();
   }

   public void setAutoSize(boolean fAutoSize) {
      this.m_autoSize = fAutoSize;
      if (this.m_image != null) {
         this.setImage(this.m_image);
      }

   }

   public void performClick() {
      if (this.m_enabled) {
         ((Control)this).onClick(Event.EMPTY);
      }

   }

   protected void onPaint(PaintEvent pe) {
      Graphics g = pe.graphics;
      Rectangle bounds = ((Control)this).getClientRect();
      Rectangle innerBounds = new Rectangle(bounds.x + 2, bounds.y + 2, bounds.width - 4, bounds.height - 4);
      this.m_displayer.paintIn(g, innerBounds, pe.clipRect, this.m_image, this.m_imageSize);
      if (this.m_enabled) {
         if (this.m_focus && !this.m_pressed) {
            Windows.DrawEdge(g.getHandle(), bounds.toRECT(), 5, 15);
         } else if (this.m_pressed) {
            Windows.DrawEdge(g.getHandle(), bounds.toRECT(), 10, 15);
         }
      }

      super.onPaint(pe);
   }

   public void setImage(Image image) {
      this.m_image = image;
      this.m_imageSize = image.getSize();
      if (this.m_autoSize && image != null) {
         Point size = image.getSize();
         size.x += 8;
         size.y += 8;
         ((Control)this).setSize(size);
      }

      ((Control)this).invalidate();
   }

   public void setEnabled(boolean enabled) {
      if (enabled != this.m_enabled) {
         this.m_enabled = enabled;
         ((Control)this).invalidate();
      }

   }

   public void notifyDefault(boolean fDefault) {
   }
}