/*
* Copyright 2012 by A-SIT, Secure Information Technology Center Austria
*
* Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
* the European Commission - subsequent versions of the EUPL (the "Licence");
* You may not use this work except in compliance with the Licence.
* You may obtain a copy of the Licence at:
* http://joinup.ec.europa.eu/software/page/eupl
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the Licence is distributed on an "AS IS" basis,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the Licence for the specific language governing permissions and
* limitations under the Licence.
*/
package at.asit.pdfover.gui.controls;
// Imports
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Cursor;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Region;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import at.asit.pdfover.gui.Constants;
/**
* Main Bar Button implementation
*/
public abstract class MainBarButton extends Canvas {
/**
* If borders are drawn with a gradient effect this sets the size
*/
public static final int GradientFactor = 5;
/**
* Number of pixel of the altitude of the triangle representing the arrow within the button shapes
*
* This should be a multiple of 2!
*/
public static final int SplitFactor = 10;
/**
* the used text color
*/
protected Color textColor = null;
/**
* the text size
*/
protected int textsize = Constants.TEXT_SIZE_BUTTON;
private Color inactiveBackground = null;
private Color activeBackground1 = null;
private Color borderColor = null;
private Color activeBackground = null;
private Color inactiveText = null;
private String text = ""; //$NON-NLS-1$
private boolean active = true;
private Image image = null;
/**
* @param parent
* @param style
*/
public MainBarButton(Composite parent, int style) {
super(parent, style);
this.addPaintListener(new PaintListener() {
@Override
public void paintControl(PaintEvent e) {
MainBarButton.this.paintControl(e);
}
});
final Cursor hand = new Cursor(this.getDisplay(), SWT.CURSOR_HAND);
this.addListener(SWT.Resize, new Listener() {
@Override
public void handleEvent(Event event) {
MainBarButton.this.setRegion(MainBarButton.this
.getCustomRegion());
MainBarButton.this.redraw();
}
});
this.setCursor(hand);
this.inactiveBackground = Constants.MAINBAR_INACTIVE_BACK;
this.activeBackground1 = Constants.MAINBAR_ACTIVE_BACK_DARK;
this.activeBackground = Constants.MAINBAR_ACTIVE_BACK_LIGHT;
//this.textColor = this.getForeground();
this.textColor = Constants.MAINBAR_ACTIVE_TEXTCOLOR;
//this.borderColor = new Color(getDisplay(), 0xf9, 0xf9, 0xf9);
this.borderColor = this.getBackground();
this.inactiveText = Constants.MAINBAR_INACTIVE_TEXTCOLOR;
this.textsize = Constants.TEXT_SIZE_BUTTON;
}
/**
* @param inactiveBackground
* the inactiveBackground to set
*/
public void setInactiveBackground(Color inactiveBackground) {
this.inactiveBackground = inactiveBackground;
}
/**
* @param activeBackground
* the activeBackground to set
*/
public void setActiveBackground(Color activeBackground) {
this.activeBackground = activeBackground;
}
/**
* @return the textsize
*/
public int getTextsize() {
return this.textsize;
}
/**
* @param textsize
* the textsize to set
*/
public void setTextsize(int textsize) {
this.textsize = textsize;
}
/**
* @param textColor
* the textColor to set
*/
public void setTextColor(Color textColor) {
this.textColor = textColor;
}
/**
* @return the borderColor
*/
public Color getBorderColor() {
return this.borderColor;
}
/**
* @param borderColor
* the borderColor to set
*/
public void setBorderColor(Color borderColor) {
this.borderColor = borderColor;
}
/**
* Gets the image
*
* @return the image
*/
public Image getImage() {
return this.image;
}
/**
* Sets the Image
*
* @param image
* the imgage to set
*/
public void setImage(Image image) {
this.image = image;
}
/**
* Sets if this button is active
*
* @param active
* the active state
*/
public void setActive(boolean active) {
this.active = active;
if (this.active) {
this.setBackground(this.activeBackground);
} else {
this.setBackground(this.inactiveBackground);
}
}
/**
* Gets if this button is active
*
* @return the active state
*/
public boolean getActive() {
return this.active;
}
/**
* Gets the button text
*
* @return the text
*/
public String getText() {
return this.text;
}
/**
* Sets the text for the button
*
* @param text
* the text to set
*/
public void setText(String text) {
this.text = text;
}
/**
* Paint 3D style borders
*
* @param e
*/
protected void paintBackground(PaintEvent e) {
Point size = this.getSize();
int height = size.y - 4;
int width = size.x;
e.gc.setForeground(this.activeBackground1);
e.gc.setBackground(this.activeBackground);
e.gc.fillGradientRectangle(0, height, width, -1 * height, true);
//e.gc.setBackground(activeBackground);
// LEFT
// e.gc.fillGradientRectangle(0, 0, factor, height, false);
// RIGTH
// e.gc.fillGradientRectangle(width, 0, -1 * (width / factor), height,
// false);
}
/**
* Main painting method
*
* @param e
*/
void paintControl(PaintEvent e) {
Color forecurrent = e.gc.getForeground();
Color backcurrent = e.gc.getBackground();
e.gc.setForeground(getBorderColor());
if(this.getActive()) {
this.paintBackground(e);
}
e.gc.setForeground(getBorderColor());
this.paintButton(e);
e.gc.setForeground(forecurrent);
e.gc.setBackground(backcurrent);
this.paintText(e);
}
/**
* paint the inner button
*
* @param e
*/
protected void paintButton(PaintEvent e) {
// could be overwritten by subclasses
}
/**
* Paint the text or image on the button
*
* @param e
*/
protected void paintText(PaintEvent e) {
Point size = this.getSize();
int height = size.y;
int width = size.x;
// e.gc.fillGradientRectangle(0, 1, width, height / 4, true);
if (this.image == null) {
Color current = e.gc.getForeground();
if(this.getActive() && this.isEnabled()) {
e.gc.setForeground(this.textColor);
} else {
e.gc.setForeground(this.inactiveText);
}
String font_name = e.gc.getFont().getFontData()[0].getName();
Font font = new Font(this.getDisplay(), font_name,
this.getTextsize(),
e.gc.getFont().getFontData()[0].getStyle());
String text = this.getText();
e.gc.setFont(font);
size = e.gc.stringExtent(text);
int texty = (height - size.y) / 2;
int textx = (width - size.x) / 2;
textx = this.changeTextPosition(textx);
e.gc.drawText(this.getText(), textx, texty, true);
font.dispose();
e.gc.setForeground(current);
} else {
//log.debug("Width: " + width + " Height: " + height);
int w = 0;
Image tmp = null;
if(this.image.getImageData().width < width) {
tmp = new Image(getDisplay(), this.image.getImageData());
w = (width - this.image.getImageData().width) / 2;
} else if(this.image.getImageData().width > width) {
tmp = new Image(getDisplay(), this.image.getImageData().scaledTo(width, width));
} else {
tmp = new Image(getDisplay(), this.image.getImageData());
}
e.gc.drawImage(tmp, w, w);
}
}
/**
* change the text position
*
* @param positionX
* the position
* @return the new position
*/
protected int changeTextPosition(int positionX) {
return positionX;
}
/**
* Gets the region of the button
*
* @return the button region
*/
protected abstract Region getCustomRegion();
}