+++ /dev/null
-/*
- * Jexer - Java Text User Interface
- *
- * The MIT License (MIT)
- *
- * Copyright (C) 2019 Kevin Lamonte
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- *
- * @author Kevin Lamonte [kevin.lamonte@gmail.com]
- * @version 1
- */
-package jexer;
-
-import java.awt.image.BufferedImage;
-
-import jexer.backend.ECMA48Terminal;
-import jexer.backend.MultiScreen;
-import jexer.backend.SwingTerminal;
-import jexer.bits.Cell;
-import jexer.event.TKeypressEvent;
-import jexer.event.TMouseEvent;
-import jexer.event.TResizeEvent;
-import static jexer.TKeypress.*;
-
-/**
- * TImage renders a piece of a bitmap image on screen.
- */
-public class TImage extends TWidget {
-
- // ------------------------------------------------------------------------
- // Constants --------------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * Selections for fitting the image to the text cells.
- */
- public enum Scale {
- /**
- * No scaling.
- */
- NONE,
-
- /**
- * Stretch/shrink the image in both directions to fully fill the text
- * area width/height.
- */
- STRETCH,
-
- /**
- * Scale the image, preserving aspect ratio, to fill the text area
- * width/height (like letterbox). The background color for the
- * letterboxed area is specified in scaleBackColor.
- */
- SCALE,
- }
-
- // ------------------------------------------------------------------------
- // Variables --------------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * Scaling strategy to use.
- */
- private Scale scale = Scale.NONE;
-
- /**
- * Scaling strategy to use.
- */
- private java.awt.Color scaleBackColor = java.awt.Color.BLACK;
-
- /**
- * The action to perform when the user clicks on the image.
- */
- private TAction clickAction;
-
- /**
- * The image to display.
- */
- private BufferedImage image;
-
- /**
- * The original image from construction time.
- */
- private BufferedImage originalImage;
-
- /**
- * The current scaling factor for the image.
- */
- private double scaleFactor = 1.0;
-
- /**
- * The current clockwise rotation for the image.
- */
- private int clockwise = 0;
-
- /**
- * If true, this widget was resized and a new scaled image must be
- * produced.
- */
- private boolean resized = false;
-
- /**
- * Left column of the image. 0 is the left-most column.
- */
- private int left;
-
- /**
- * Top row of the image. 0 is the top-most row.
- */
- private int top;
-
- /**
- * The cells containing the broken up image pieces.
- */
- private Cell cells[][];
-
- /**
- * The number of rows in cells[].
- */
- private int cellRows;
-
- /**
- * The number of columns in cells[].
- */
- private int cellColumns;
-
- /**
- * Last text width value.
- */
- private int lastTextWidth = -1;
-
- /**
- * Last text height value.
- */
- private int lastTextHeight = -1;
-
- // ------------------------------------------------------------------------
- // Constructors -----------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * Public constructor.
- *
- * @param parent parent widget
- * @param x column relative to parent
- * @param y row relative to parent
- * @param width number of text cells for width of the image
- * @param height number of text cells for height of the image
- * @param image the image to display
- * @param left left column of the image. 0 is the left-most column.
- * @param top top row of the image. 0 is the top-most row.
- */
- public TImage(final TWidget parent, final int x, final int y,
- final int width, final int height,
- final BufferedImage image, final int left, final int top) {
-
- this(parent, x, y, width, height, image, left, top, null);
- }
-
- /**
- * Public constructor.
- *
- * @param parent parent widget
- * @param x column relative to parent
- * @param y row relative to parent
- * @param width number of text cells for width of the image
- * @param height number of text cells for height of the image
- * @param image the image to display
- * @param left left column of the image. 0 is the left-most column.
- * @param top top row of the image. 0 is the top-most row.
- * @param clickAction function to call when mouse is pressed
- */
- public TImage(final TWidget parent, final int x, final int y,
- final int width, final int height,
- final BufferedImage image, final int left, final int top,
- final TAction clickAction) {
-
- // Set parent and window
- super(parent, x, y, width, height);
-
- setCursorVisible(false);
- this.originalImage = image;
- this.left = left;
- this.top = top;
- this.clickAction = clickAction;
-
- sizeToImage(true);
- }
-
- // ------------------------------------------------------------------------
- // Event handlers ---------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * Handle mouse press events.
- *
- * @param mouse mouse button press event
- */
- @Override
- public void onMouseDown(final TMouseEvent mouse) {
- if (clickAction != null) {
- clickAction.DO(this);
- return;
- }
- }
-
- /**
- * Handle keystrokes.
- *
- * @param keypress keystroke event
- */
- @Override
- public void onKeypress(final TKeypressEvent keypress) {
- if (!keypress.getKey().isFnKey()) {
- if (keypress.getKey().getChar() == '+') {
- // Make the image bigger.
- scaleFactor *= 1.25;
- image = null;
- sizeToImage(true);
- return;
- }
- if (keypress.getKey().getChar() == '-') {
- // Make the image smaller.
- scaleFactor *= 0.80;
- image = null;
- sizeToImage(true);
- return;
- }
- }
- if (keypress.equals(kbAltUp)) {
- // Make the image bigger.
- scaleFactor *= 1.25;
- image = null;
- sizeToImage(true);
- return;
- }
- if (keypress.equals(kbAltDown)) {
- // Make the image smaller.
- scaleFactor *= 0.80;
- image = null;
- sizeToImage(true);
- return;
- }
- if (keypress.equals(kbAltRight)) {
- // Rotate clockwise.
- clockwise++;
- clockwise %= 4;
- image = null;
- sizeToImage(true);
- return;
- }
- if (keypress.equals(kbAltLeft)) {
- // Rotate counter-clockwise.
- clockwise--;
- if (clockwise < 0) {
- clockwise = 3;
- }
- image = null;
- sizeToImage(true);
- return;
- }
-
- if (keypress.equals(kbShiftLeft)) {
- switch (scale) {
- case NONE:
- setScaleType(Scale.SCALE);
- return;
- case STRETCH:
- setScaleType(Scale.NONE);
- return;
- case SCALE:
- setScaleType(Scale.STRETCH);
- return;
- }
- }
- if (keypress.equals(kbShiftRight)) {
- switch (scale) {
- case NONE:
- setScaleType(Scale.STRETCH);
- return;
- case STRETCH:
- setScaleType(Scale.SCALE);
- return;
- case SCALE:
- setScaleType(Scale.NONE);
- return;
- }
- }
-
- // Pass to parent for the things we don't care about.
- super.onKeypress(keypress);
- }
-
- /**
- * Handle resize events.
- *
- * @param event resize event
- */
- @Override
- public void onResize(final TResizeEvent event) {
- // Get my width/height set correctly.
- super.onResize(event);
-
- if (scale == Scale.NONE) {
- return;
- }
- image = null;
- resized = true;
- }
-
- // ------------------------------------------------------------------------
- // TWidget ----------------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * Draw the image.
- */
- @Override
- public void draw() {
- sizeToImage(false);
-
- // We have already broken the image up, just draw the last set of
- // cells.
- for (int x = 0; (x < getWidth()) && (x + left < cellColumns); x++) {
- if ((left + x) * lastTextWidth > image.getWidth()) {
- continue;
- }
-
- for (int y = 0; (y < getHeight()) && (y + top < cellRows); y++) {
- if ((top + y) * lastTextHeight > image.getHeight()) {
- continue;
- }
- assert (x + left < cellColumns);
- assert (y + top < cellRows);
-
- getWindow().putCharXY(x, y, cells[x + left][y + top]);
- }
- }
-
- }
-
- // ------------------------------------------------------------------------
- // TImage -----------------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * Size cells[][] according to the screen font size.
- *
- * @param always if true, always resize the cells
- */
- private void sizeToImage(final boolean always) {
- int textWidth = getScreen().getTextWidth();
- int textHeight = getScreen().getTextHeight();
-
- if (image == null) {
- image = rotateImage(originalImage, clockwise);
- image = scaleImage(image, scaleFactor, getWidth(), getHeight(),
- textWidth, textHeight);
- }
-
- if ((always == true) ||
- (resized == true) ||
- ((textWidth > 0)
- && (textWidth != lastTextWidth)
- && (textHeight > 0)
- && (textHeight != lastTextHeight))
- ) {
- resized = false;
-
- cellColumns = image.getWidth() / textWidth;
- if (cellColumns * textWidth < image.getWidth()) {
- cellColumns++;
- }
- cellRows = image.getHeight() / textHeight;
- if (cellRows * textHeight < image.getHeight()) {
- cellRows++;
- }
-
- // Break the image up into an array of cells.
- cells = new Cell[cellColumns][cellRows];
-
- for (int x = 0; x < cellColumns; x++) {
- for (int y = 0; y < cellRows; y++) {
-
- int width = textWidth;
- if ((x + 1) * textWidth > image.getWidth()) {
- width = image.getWidth() - (x * textWidth);
- }
- int height = textHeight;
- if ((y + 1) * textHeight > image.getHeight()) {
- height = image.getHeight() - (y * textHeight);
- }
-
- Cell cell = new Cell();
- cell.setImage(image.getSubimage(x * textWidth,
- y * textHeight, width, height));
-
- cells[x][y] = cell;
- }
- }
-
- lastTextWidth = textWidth;
- lastTextHeight = textHeight;
- }
-
- if ((left + getWidth()) > cellColumns) {
- left = cellColumns - getWidth();
- }
- if (left < 0) {
- left = 0;
- }
- if ((top + getHeight()) > cellRows) {
- top = cellRows - getHeight();
- }
- if (top < 0) {
- top = 0;
- }
- }
-
- /**
- * Get the top corner to render.
- *
- * @return the top row
- */
- public int getTop() {
- return top;
- }
-
- /**
- * Set the top corner to render.
- *
- * @param top the new top row
- */
- public void setTop(final int top) {
- this.top = top;
- if (this.top > cellRows - getHeight()) {
- this.top = cellRows - getHeight();
- }
- if (this.top < 0) {
- this.top = 0;
- }
- }
-
- /**
- * Get the left corner to render.
- *
- * @return the left column
- */
- public int getLeft() {
- return left;
- }
-
- /**
- * Set the left corner to render.
- *
- * @param left the new left column
- */
- public void setLeft(final int left) {
- this.left = left;
- if (this.left > cellColumns - getWidth()) {
- this.left = cellColumns - getWidth();
- }
- if (this.left < 0) {
- this.left = 0;
- }
- }
-
- /**
- * Get the number of text cell rows for this image.
- *
- * @return the number of rows
- */
- public int getRows() {
- return cellRows;
- }
-
- /**
- * Get the number of text cell columns for this image.
- *
- * @return the number of columns
- */
- public int getColumns() {
- return cellColumns;
- }
-
- /**
- * Get the raw (unprocessed) image.
- *
- * @return the image
- */
- public BufferedImage getImage() {
- return originalImage;
- }
-
- /**
- * Set the raw image, and reprocess to make the visible image.
- *
- * @param image the new image
- */
- public void setImage(final BufferedImage image) {
- this.originalImage = image;
- this.image = null;
- sizeToImage(true);
- }
-
- /**
- * Get the visible (processed) image.
- *
- * @return the image that is currently on screen
- */
- public BufferedImage getVisibleImage() {
- return image;
- }
-
- /**
- * Get the scaling strategy.
- *
- * @return Scale.NONE, Scale.STRETCH, etc.
- */
- public Scale getScaleType() {
- return scale;
- }
-
- /**
- * Set the scaling strategy.
- *
- * @param scale Scale.NONE, Scale.STRETCH, etc.
- */
- public void setScaleType(final Scale scale) {
- this.scale = scale;
- this.image = null;
- sizeToImage(true);
- }
-
- /**
- * Get the scale factor.
- *
- * @return the scale factor
- */
- public double getScaleFactor() {
- return scaleFactor;
- }
-
- /**
- * Set the scale factor. 1.0 means no scaling.
- *
- * @param scaleFactor the new scale factor
- */
- public void setScaleFactor(final double scaleFactor) {
- this.scaleFactor = scaleFactor;
- image = null;
- sizeToImage(true);
- }
-
- /**
- * Get the rotation, as degrees.
- *
- * @return the rotation in degrees
- */
- public int getRotation() {
- switch (clockwise) {
- case 0:
- return 0;
- case 1:
- return 90;
- case 2:
- return 180;
- case 3:
- return 270;
- default:
- // Don't know how this happened, but fix it.
- clockwise = 0;
- image = null;
- sizeToImage(true);
- return 0;
- }
- }
-
- /**
- * Set the rotation, as degrees clockwise.
- *
- * @param rotation 0, 90, 180, or 270
- */
- public void setRotation(final int rotation) {
- switch (rotation) {
- case 0:
- clockwise = 0;
- break;
- case 90:
- clockwise = 1;
- break;
- case 180:
- clockwise = 2;
- break;
- case 270:
- clockwise = 3;
- break;
- default:
- // Don't know how this happened, but fix it.
- clockwise = 0;
- break;
- }
-
- image = null;
- sizeToImage(true);
- }
-
- /**
- * Scale an image by to be scaleFactor size.
- *
- * @param image the image to scale
- * @param factor the scale to make the new image
- * @param width the number of text cell columns for the destination image
- * @param height the number of text cell rows for the destination image
- * @param textWidth the width in pixels for one text cell
- * @param textHeight the height in pixels for one text cell
- */
- private BufferedImage scaleImage(final BufferedImage image,
- final double factor, final int width, final int height,
- final int textWidth, final int textHeight) {
-
- if ((scale == Scale.NONE) && (Math.abs(factor - 1.0) < 0.03)) {
- // If we are within 3% of 1.0, just return the original image.
- return image;
- }
-
- int destWidth = 0;
- int destHeight = 0;
- int x = 0;
- int y = 0;
-
- BufferedImage newImage = null;
-
- switch (scale) {
- case NONE:
- destWidth = (int) (image.getWidth() * factor);
- destHeight = (int) (image.getHeight() * factor);
- newImage = new BufferedImage(destWidth, destHeight,
- BufferedImage.TYPE_INT_ARGB);
- break;
- case STRETCH:
- destWidth = width * textWidth;
- destHeight = height * textHeight;
- newImage = new BufferedImage(destWidth, destHeight,
- BufferedImage.TYPE_INT_ARGB);
- break;
- case SCALE:
- double a = (double) image.getWidth() / image.getHeight();
- double b = (double) (width * textWidth) / (height * textHeight);
- assert (a > 0);
- assert (b > 0);
-
- /*
- System.err.println("Scale: original " + image.getWidth() +
- "x" + image.getHeight());
- System.err.println(" screen " + (width * textWidth) +
- "x" + (height * textHeight));
- System.err.println("A " + a + " B " + b);
- */
-
- if (a > b) {
- // Horizontal letterbox
- destWidth = width * textWidth;
- destHeight = (int) (destWidth / a);
- y = ((height * textHeight) - destHeight) / 2;
- assert (y >= 0);
- /*
- System.err.println("Horizontal letterbox: " + destWidth +
- "x" + destHeight + ", Y offset " + y);
- */
- } else {
- // Vertical letterbox
- destHeight = height * textHeight;
- destWidth = (int) (destHeight * a);
- x = ((width * textWidth) - destWidth) / 2;
- assert (x >= 0);
- /*
- System.err.println("Vertical letterbox: " + destWidth +
- "x" + destHeight + ", X offset " + x);
- */
- }
- newImage = new BufferedImage(width * textWidth, height * textHeight,
- BufferedImage.TYPE_INT_ARGB);
- break;
- }
-
- java.awt.Graphics gr = newImage.createGraphics();
- if (scale == Scale.SCALE) {
- gr.setColor(scaleBackColor);
- gr.fillRect(0, 0, width * textWidth, height * textHeight);
- }
- gr.drawImage(image, x, y, destWidth, destHeight, null);
- gr.dispose();
- return newImage;
- }
-
- /**
- * Rotate an image either clockwise or counterclockwise.
- *
- * @param image the image to scale
- * @param clockwise number of turns clockwise
- */
- private BufferedImage rotateImage(final BufferedImage image,
- final int clockwise) {
-
- if (clockwise % 4 == 0) {
- return image;
- }
-
- BufferedImage newImage = null;
-
- if (clockwise % 4 == 1) {
- // 90 degrees clockwise
- newImage = new BufferedImage(image.getHeight(), image.getWidth(),
- BufferedImage.TYPE_INT_ARGB);
- for (int x = 0; x < image.getWidth(); x++) {
- for (int y = 0; y < image.getHeight(); y++) {
- newImage.setRGB(y, x,
- image.getRGB(x, image.getHeight() - 1 - y));
- }
- }
- } else if (clockwise % 4 == 2) {
- // 180 degrees clockwise
- newImage = new BufferedImage(image.getWidth(), image.getHeight(),
- BufferedImage.TYPE_INT_ARGB);
- for (int x = 0; x < image.getWidth(); x++) {
- for (int y = 0; y < image.getHeight(); y++) {
- newImage.setRGB(x, y,
- image.getRGB(image.getWidth() - 1 - x,
- image.getHeight() - 1 - y));
- }
- }
- } else if (clockwise % 4 == 3) {
- // 270 degrees clockwise
- newImage = new BufferedImage(image.getHeight(), image.getWidth(),
- BufferedImage.TYPE_INT_ARGB);
- for (int x = 0; x < image.getWidth(); x++) {
- for (int y = 0; y < image.getHeight(); y++) {
- newImage.setRGB(y, x,
- image.getRGB(image.getWidth() - 1 - x, y));
- }
- }
- }
-
- return newImage;
- }
-
-}
git://git.nikiroo.be / fanfix.git / blobdiff