gauge.java

j2me is based on j2mepolish, client & server for mobile application. menu sample

	/* (non-Javadoc)
	 * @see de.enough.polish.ui.Item#initItem()
	 */
	protected void initContent(int firstLineWidth, int lineWidth) {
		this.valueWidth = 0;
		int valueHeight = 0;
		if (this.isIndefinite) {
			this.showValue = false;
		}
		if ( this.showValue) {
			if (this.font == null) {
				this.font = Font.getDefaultFont();
			}
			valueHeight = this.font.getHeight();
			this.valueWidth = this.font.stringWidth( "" + this.maxValue ) + this.paddingHorizontal;
		}
		// setting height:
		if (this.preferredHeight > 0 ) {
			this.contentHeight = this.preferredHeight;
			if (this.image != null) {
				int imageHeight = this.image.getHeight();
				if ( (this.layout & LAYOUT_BOTTOM) == LAYOUT_BOTTOM ) {
					this.imageYOffset = this.preferredHeight - imageHeight;
				} else if ( (this.layout & LAYOUT_VCENTER) == LAYOUT_VCENTER ) {
					this.imageYOffset = (this.preferredHeight - imageHeight) / 2;
				}
			}
		} else if (this.image != null) {
			this.contentHeight = this.image.getHeight();
		} else {
			this.contentHeight = 10;
		}
		if (this.contentHeight < valueHeight) {
			this.contentHeight = valueHeight;
		}
		// setting width:
		if (this.image != null 
				&& !this.isIndefinite 
				&& this.preferredWidth == 0 ) {
			//#if polish.css.gauge-button-image
				//# if (this.useImageAsButton) {
				//#if polish.css.gauge-slider-image
					//# if (this.sliderImage != null ) {
						//# this.contentWidth = this.sliderImage.getWidth() + this.valueWidth;
						//# this.sliderWidth = this.sliderImage.getWidth() - this.image.getWidth();
					//# } else {
				//#endif
						//# if (this.preferredWidth > 0) {
							//# this.contentWidth = this.preferredWidth + this.valueWidth;
						//# } else if (this.isLayoutExpand) {
							//# this.contentWidth = lineWidth;
						//# } else {
							//# this.contentWidth = firstLineWidth;
						//# }
						//# this.sliderWidth = this.contentWidth - (this.valueWidth + this.image.getWidth());
				//#if polish.css.gauge-slider-image
					//# }
				//#endif
				//# } else {
			//#endif
					this.contentWidth = this.image.getWidth() + this.valueWidth;
			//#if polish.css.gauge-button-image
				//# }
			//#endif			
		} else if (this.preferredWidth > 0) {
			this.contentWidth = this.preferredWidth + this.valueWidth;
		} else if (this.isLayoutExpand) {
			this.contentWidth = lineWidth;
		} else if ((this.layout & LAYOUT_SHRINK) == LAYOUT_SHRINK) {
			this.contentWidth = Math.max( lineWidth / 3, 10 );
		} else {
			this.contentWidth = firstLineWidth;
		}
		
		// update other settings:
		if (this.isIndefinite) {
			if (this.image != null ) {
				if (this.value == CONTINUOUS_IDLE  || this.value == CONTINUOUS_RUNNING ) {
					this.maxValue = this.contentWidth;
				} else {
					this.maxValue = this.contentWidth / this.image.getWidth();
				}
			} else {
				this.maxValue = 20;
			}
			int imageWidth = this.contentWidth - this.valueWidth; //Math.max( 1, this.contentWidth - this.valueWidth );
			int imageHeight =  this.contentHeight; // Math.max( 1, this.contentHeight );
			if (imageWidth > 0 && imageHeight > 0) {
				this.indicatorImage = Image.createImage( imageWidth, imageHeight );
				updateIndefiniteIndicatorImage();
			} else {
				//#if polish.debug.error
					//# throw new IllegalArgumentException( "invalid lineWidth for gauge: " + lineWidth );
				//#else
					throw new IllegalArgumentException();
				//#endif
			}
		} else if (this.image == null){ // this is a definite gauge
			createIndicatorImage();
		}
	}

	//#ifdef polish.useDynamicStyles
	//# /* (non-Javadoc)
	 //# * @see de.enough.polish.ui.Item#getCssSelector()
	 //# */
	//# protected String createCssSelector() {
		//# return "gauge";
	//# }
	//#endif
	
	/* (non-Javadoc)
	 * @see de.enough.polish.ui.Item#setStyle(de.enough.polish.ui.Style)
	 */
	public void setStyle(Style style) {
		super.setStyle(style);
		//#ifdef polish.css.gauge-color
			//# Integer gaugeColor = style.getIntProperty(18);
			//# if (gaugeColor != null) {
				//# this.color = gaugeColor.intValue();
			//# }
		//#endif
		//#ifdef polish.css.gauge-width
			//# Integer width = style.getIntProperty( 19);
			//# if (width != null) {
				//# this.preferredWidth = width.intValue();
			//# }
		//#endif
		//#ifdef polish.css.gauge-height
			//# Integer height = style.getIntProperty( 20);
			//# if (height != null) {
				//# this.preferredHeight = height.intValue();
			//# }
		//#endif
		//#ifdef polish.css.gauge-mode
			//# Integer modeInt = style.getIntProperty( 21);
			//# if (modeInt != null) {
				//# if (modeInt.intValue() == 0) {
					//# this.mode = MODE_CHUNKED;
				//# } else {
					//# this.mode = MODE_CONTINUOUS;
				//# }					
			//# }
		//#endif
		//#ifdef polish.css.gauge-gap-color
			//# Integer gapColorInt = style.getIntProperty( 22);
			//# if (gapColorInt != null) {
				//# this.gapColor = gapColorInt.intValue();
			//# }
		//#endif
		//#ifdef polish.css.gauge-gap-width
			//# Integer gapWidthInt = style.getIntProperty( 23);
			//# if (gapWidthInt != null) {
				//# this.gapWidth = gapWidthInt.intValue();
			//# }
		//#endif
		//#ifdef polish.css.gauge-chunk-width
			//# Integer chunkWidthInt = style.getIntProperty( 24);
			//# if (chunkWidthInt != null) {
				//# this.chunkWidth = chunkWidthInt.intValue();
			//# }
		//#endif
		//#ifdef polish.css.gauge-image
			//# String imageStr = style.getProperty( 17);
			//# if (imageStr != null) {
				//# try {
					//# this.image = StyleSheet.getImage( imageStr, this, false );
				//# } catch (IOException e) {
					//#debug error
					//# System.out.println("unable to load gauge-image [" + imageStr + "]: " + e );
				//# }
			//# }
		//#endif
		//#ifdef polish.css.gauge-inactive-image
			//# String inactiveImageStr = style.getProperty( 131);
			//# if (inactiveImageStr != null) {
				//# try {
					//# this.inactiveImage = StyleSheet.getImage( inactiveImageStr, null, false );
				//# } catch (IOException e) {
					//#debug error
					//# System.out.println("unable to load gauge-inactive-image [" + inactiveImageStr + "]: " + e );
				//# }
			//# }
		//#endif
		if (this.maxValue != INDEFINITE) {
			//#ifdef polish.css.gauge-show-value
				//# Boolean showValueBool = style.getBooleanProperty(25);
				//# if (showValueBool != null) {
					//# this.showValue = showValueBool.booleanValue();
				//# }
			//#endif
			if (style.font != null) {
				this.font = style.font;
			}
			this.fontColor = style.getFontColor();
			//#ifdef polish.css.gauge-value-align
				//# Integer valuePositionInt =  style.getIntProperty( 26 );
				//# if (valuePositionInt != null) {
					//# if (valuePositionInt.intValue() == 0) {
						//# this.isValueLeft = true;
					//# } else {
						//# this.isValueLeft = false;
					//# }
				//# }
			//#endif
		}
		//#if polish.css.gauge-animation-speed
			//# Integer animationSpeedInt = style.getIntProperty( 129 );
			//# if (animationSpeedInt != null) {
				//# this.animationSpeed = animationSpeedInt.intValue();
			//# }
		//#endif
		//#if polish.css.gauge-animation-mode
			//# Integer animationModeInt = style.getIntProperty( 130 );
			//# if (animationModeInt != null) {
				//# this.animationMode = animationModeInt.intValue();
			//# }
		//#endif
		//#if polish.css.gauge-button-image
			//# String buttonImageUrl = style.getProperty(151);
			//# if (buttonImageUrl != null) {
				//# try {
					//# this.image = StyleSheet.getImage( buttonImageUrl, this, false );
					//# this.useImageAsButton = true;
				//# } catch (IOException e) {
					//#debug error
					//# System.out.println("unable to load gauge-button-image [" + buttonImageUrl + "]: " + e );
				//# }
			//# }
		//#endif
		//#if polish.css.gauge-slider-image
			//# String sliderImageUrl = style.getProperty(152);
			//# if (sliderImageUrl != null) {
				//# try {
					//# this.sliderImage = StyleSheet.getImage( sliderImageUrl, this, false );
				//# } catch (IOException e) {
					//#debug error
					//# System.out.println("unable to load gauge-slider-image [" + sliderImageUrl + "]: " + e );
				//# }
			//# }
		//#endif
	}

	//#ifdef polish.images.backgroundLoad
	//# /* (non-Javadoc)
	 //# * @see de.enough.polish.ui.ImageConsumer#setImage(java.lang.String, javax.microedition.lcdui.Image)
	 //# */
	//# public void setImage(String name, Image image) {
		//# this.image = image;
		//# this.isInitialized = false;
		//# repaint();
	//# }
	//#endif
	
	/* (non-Javadoc)
	 * @see de.enough.polish.ui.Item#handleKeyPressed(int, int)
	 */
	protected boolean handleKeyPressed(int keyCode, int gameAction) {
		if (!this.isInteractive) {
			return false;
		}
		if (gameAction == Canvas.RIGHT) {
			if (this.value < this.maxValue) {
				setValue( ++ this.value );
				notifyStateChanged();
				return true;
			} else {
				//#if polish.blackberry
					//# return false;
				//#else
					// silently supress the event and stay in max position:
					return true;
				//#endif
			}			
		} else if (gameAction == Canvas.LEFT) {
			if (this.value > 0) {
				setValue( -- this.value );
				notifyStateChanged();
				return true;
			} else {
				//#if polish.blackberry
					//# return false;
				//#else
					// silently supress the event and stay in min position:
					return true;
				//#endif
			}
		} else {
			return false;
		}
	}
	
	//#ifdef polish.hasPointerEvents
	//# /* (non-Javadoc)
	 //# * @see de.enough.polish.ui.Item#handlePointerPressed(int, int)
	 //# */
	//# protected boolean handlePointerPressed(int x, int y) {
		//# if (this.isIndefinite || !this.isInteractive || !isInItemArea(x, y)) {
			//# return false;
		//# }
		//# int val = this.value;
		//# if (val < this.maxValue) {
			//# setValue( ++val );
		//# } else {
			//# setValue( 0 );
		//# }
		//# return true;
	//# }
	//#endif
	
	/* (non-Javadoc)
	 * @see de.enough.polish.ui.Item#animate()
	 */
	public boolean animate() {
		boolean animated = super.animate();
		//#if polish.css.view-type
			if (this.view != null) {
				// skip animation when there is a view present in this gauge
				return animated;
			}
		//#endif
		if (this.isIndefinite && this.value == CONTINUOUS_RUNNING && this.isInitialized) {
			//#if polish.css.gauge-animation-mode
				//# if ( this.image != null && this.animationMode == ANIMATION_MODE_BACKANDFORTH ) {
					//# if (this.animationDirectionDownwards) {
						//#if polish.css.gauge-animation-speed
							//# this.indefinitePos -= this.animationSpeed;
						//#else
							//# this.indefinitePos--;
						//#endif
						//# if (this.indefinitePos <= 0) {
							//# this.indefinitePos = 0;
							//# this.animationDirectionDownwards = false;
						//# }
					//# } else {
						//#if polish.css.gauge-animation-speed
							//# this.indefinitePos += this.animationSpeed;
						//#else
							//# this.indefinitePos++;
						//#endif
						//# if (this.indefinitePos >= this.contentWidth - this.image.getWidth()) {				
							//# this.indefinitePos = this.contentWidth - this.image.getWidth();
							//# this.animationDirectionDownwards = true;
						//# }
					//# }
					//# return true;
				//# }
			//#endif
			//#if polish.css.gauge-animation-speed
				//# this.indefinitePos += this.animationSpeed;
			//#else
				this.indefinitePos++;
			//#endif
			if (this.image == null) {
				if (this.indefinitePos > (this.chunkWidth + this.gapWidth)) {
					this.indefinitePos = 0;
				}
				updateIndefiniteIndicatorImage();
			} else if (this.indefinitePos > this.maxValue) {				
				this.indefinitePos = -this.image.getWidth();
			}
			return true;
		}
		return animated;
	}
	
	

	/* (non-Javadoc)
	 * @see de.enough.polish.ui.FakeStringCustomItem#hideNotify()
	 */
	protected void hideNotify() {
		super.hideNotify();
		if (this.isIndefinite && this.value == CONTINUOUS_RUNNING) {
			AnimationThread.removeAnimationItem( this );
		}
		this.isShown = false;
	}

	/* (non-Javadoc)
	 * @see de.enough.polish.ui.FakeStringCustomItem#showNotify()
	 */
	protected void showNotify() {
		super.showNotify();
		if (this.isIndefinite && this.value == CONTINUOUS_RUNNING) {
			AnimationThread.addAnimationItem( this );
		}
		this.isShown = true;
	}
}