+++ /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 static jexer.TKeypress.*;
-
-/**
- * TImage renders a piece of a bitmap image on screen.
- */
-public class TImage extends TWidget {
-
- // ------------------------------------------------------------------------
- // Variables --------------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * 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;
-
- /**
- * 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);
-
- getApplication().addImage(this);
- }
-
- // ------------------------------------------------------------------------
- // Event handlers ---------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * Subclasses should override this method to cleanup resources. This is
- * called by TWindow.onClose().
- */
- @Override
- protected void close() {
- getApplication().removeImage(this);
- super.close();
- }
-
- /**
- * Handle mouse press events.
- *
- * @param mouse mouse button press event
- */
- @Override
- public void onMouseDown(final TMouseEvent mouse) {
- if (clickAction != null) {
- clickAction.DO();
- 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;
- }
-
- // Pass to parent for the things we don't care about.
- super.onKeypress(keypress);
- }
-
- // ------------------------------------------------------------------------
- // 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 = 16;
- int textHeight = 20;
-
- if (getScreen() instanceof SwingTerminal) {
- SwingTerminal terminal = (SwingTerminal) getScreen();
-
- textWidth = terminal.getTextWidth();
- textHeight = terminal.getTextHeight();
- } if (getScreen() instanceof MultiScreen) {
- MultiScreen terminal = (MultiScreen) getScreen();
-
- textWidth = terminal.getTextWidth();
- textHeight = terminal.getTextHeight();
- } else if (getScreen() instanceof ECMA48Terminal) {
- ECMA48Terminal terminal = (ECMA48Terminal) getScreen();
-
- textWidth = terminal.getTextWidth();
- textHeight = terminal.getTextHeight();
- }
-
- if (image == null) {
- image = scaleImage(originalImage, scaleFactor);
- image = rotateImage(image, clockwise);
- }
-
- if ((always == true) ||
- ((textWidth > 0)
- && (textWidth != lastTextWidth)
- && (textHeight > 0)
- && (textHeight != lastTextHeight))
- ) {
- 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;
- }
-
- /**
- * Scale an image by to be scaleFactor size.
- *
- * @param image the image to scale
- * @param factor the scale to make the new image
- */
- private BufferedImage scaleImage(final BufferedImage image,
- final double factor) {
-
- if (Math.abs(factor - 1.0) < 0.03) {
- // If we are within 3% of 1.0, just return the original image.
- return image;
- }
-
- int width = (int) (image.getWidth() * factor);
- int height = (int) (image.getHeight() * factor);
-
- BufferedImage newImage = new BufferedImage(width, height,
- BufferedImage.TYPE_INT_ARGB);
-
- java.awt.Graphics gr = newImage.createGraphics();
- gr.drawImage(image, 0, 0, width, height, 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