Package org.apache.pivot.wtk.media

Examples of org.apache.pivot.wtk.media.Image

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    public void setIcon(URL iconURL) {
        if (iconURL == null) {
            throw new IllegalArgumentException("iconURL is null.");
        }

        Image icon = (Image)ApplicationContext.getResourceCache().get(iconURL);

        if (icon == null) {
            try {
                icon = Image.load(iconURL);
            } catch (TaskExecutionException exception) {
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    private void loadMessageIcons(Map<String, String> messageIconNames,
        HashMap<MessageType, Image> messageIcons) {
        for (String messageIconType : messageIconNames) {
            String messageIconName = messageIconNames.get(messageIconType);

            Image messageIcon;
            try {
                messageIcon = Image.load(getClass().getResource(messageIconName));
            } catch (TaskExecutionException exception) {
                throw new RuntimeException(exception);
            }
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        super.install(component);

        ImageView imageView = (ImageView)component;
        imageView.getImageViewListeners().add(this);

        Image image = imageView.getImage();
        if (image != null) {
            image.getImageListeners().add(imageListener);
        }
    }
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    }

    @Override
    public int getPreferredWidth(int height) {
        ImageView imageView = (ImageView)getComponent();
        Image image = imageView.getImage();

        return (image == null) ? 0 : image.getWidth();
    }
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    }

    @Override
    public int getPreferredHeight(int width) {
        ImageView imageView = (ImageView)getComponent();
        Image image = imageView.getImage();

        return (image == null) ? 0 : image.getHeight();
    }
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    }

    @Override
    public Dimensions getPreferredSize() {
        ImageView imageView = (ImageView)getComponent();
        Image image = imageView.getImage();

        return (image == null) ? new Dimensions(0, 0) : new Dimensions(image.getWidth(),
            image.getHeight());
    }
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    }

    @Override
    public int getBaseline(int width, int height) {
        ImageView imageView = (ImageView)getComponent();
        Image image = imageView.getImage();

        int baseline = -1;

        if (image != null) {
            baseline = image.getBaseline();

            if (baseline != -1) {
                Dimensions imageSize = image.getSize();

                if (fill) {
                    // Scale to fit
                    if (preserveAspectRatio) {
                        float aspectRatio = (float)width / (float)height;
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    }

    @Override
    public void layout() {
        ImageView imageView = (ImageView)getComponent();
        Image image = imageView.getImage();

        if (image != null) {
            int width = getWidth();
            int height = getHeight();

            Dimensions imageSize = image.getSize();

            if (fill) {
                // Scale to fit
                if (preserveAspectRatio) {
                    float aspectRatio = (float)width / (float)height;
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    }

    @Override
    public void paint(Graphics2D graphics) {
        ImageView imageView = (ImageView)getComponent();
        Image image = imageView.getImage();

        int width = getWidth();
        int height = getHeight();

        if (backgroundColor != null) {
            graphics.setPaint(backgroundColor);
            graphics.fillRect(0, 0, width, height);
        }

        if (image != null) {
            Graphics2D imageGraphics = (Graphics2D)graphics.create();
            imageGraphics.translate(imageX, imageY);
            imageGraphics.scale(scaleX, scaleY);

            // Apply an alpha composite if the opacity value is less than
            // the current alpha
            float alpha = 1.0f;

            Composite composite = imageGraphics.getComposite();
            if (composite instanceof AlphaComposite) {
                AlphaComposite alphaComposite = (AlphaComposite)composite;
                alpha = alphaComposite.getAlpha();
            }

            if (opacity < alpha) {
                imageGraphics.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, opacity));
            }

            image.paint(imageGraphics);
            imageGraphics.dispose();
        }
    }
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    public void imageChanged(ImageView imageView, Image previousImage) {
        if (previousImage != null) {
            previousImage.getImageListeners().remove(imageListener);
        }

        Image image = imageView.getImage();
        if (image != null) {
            image.getImageListeners().add(imageListener);
        }

        invalidateComponent();
    }
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