+++ /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 java.io.File;
-import java.io.IOException;
-import java.util.ResourceBundle;
-import javax.imageio.ImageIO;
-
-import jexer.event.TKeypressEvent;
-import jexer.event.TMouseEvent;
-import jexer.event.TResizeEvent;
-import static jexer.TKeypress.*;
-
-/**
- * TImageWindow shows an image with scrollbars.
- */
-public class TImageWindow extends TScrollableWindow {
-
- /**
- * Translated strings.
- */
- private static final ResourceBundle i18n = ResourceBundle.getBundle(TImageWindow.class.getName());
-
- // ------------------------------------------------------------------------
- // Constants --------------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * The number of lines to scroll on mouse wheel up/down.
- */
- private static final int wheelScrollSize = 3;
-
- // ------------------------------------------------------------------------
- // Variables --------------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * Hang onto the TImage so I can resize it with the window.
- */
- private TImage imageField;
-
- // ------------------------------------------------------------------------
- // Constructors -----------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * Public constructor opens a file.
- *
- * @param parent the main application
- * @param file the file to open
- * @throws IOException if a java.io operation throws
- */
- public TImageWindow(final TApplication parent,
- final File file) throws IOException {
-
- this(parent, file, 0, 0, parent.getScreen().getWidth(),
- parent.getDesktopBottom() - parent.getDesktopTop());
- }
-
- /**
- * Public constructor opens a file.
- *
- * @param parent the main application
- * @param file the file to open
- * @param x column relative to parent
- * @param y row relative to parent
- * @param width width of window
- * @param height height of window
- * @throws IOException if a java.io operation throws
- */
- public TImageWindow(final TApplication parent, final File file,
- final int x, final int y, final int width,
- final int height) throws IOException {
-
- super(parent, file.getName(), x, y, width, height, RESIZABLE);
-
- BufferedImage image = ImageIO.read(file);
-
- imageField = addImage(0, 0, getWidth() - 2, getHeight() - 2,
- image, 0, 0);
- setTitle(file.getName());
-
- setupAfterImage();
- }
-
- /**
- * Setup other fields after the image is created.
- */
- private void setupAfterImage() {
- if (imageField.getRows() < getHeight() - 2) {
- imageField.setHeight(imageField.getRows());
- setHeight(imageField.getRows() + 2);
- }
- if (imageField.getColumns() < getWidth() - 2) {
- imageField.setWidth(imageField.getColumns());
- setWidth(imageField.getColumns() + 2);
- }
-
- hScroller = new THScroller(this,
- Math.min(Math.max(0, getWidth() - 17), 17),
- getHeight() - 2,
- getWidth() - Math.min(Math.max(0, getWidth() - 17), 17) - 3);
- vScroller = new TVScroller(this, getWidth() - 2, 0, getHeight() - 2);
- setTopValue(0);
- setBottomValue(imageField.getRows() - imageField.getHeight());
- setLeftValue(0);
- setRightValue(imageField.getColumns() - imageField.getWidth());
-
- statusBar = newStatusBar(i18n.getString("statusBar"));
- }
-
- // ------------------------------------------------------------------------
- // Event handlers ---------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * Handle mouse press events.
- *
- * @param mouse mouse button press event
- */
- @Override
- public void onMouseDown(final TMouseEvent mouse) {
- // Use TWidget's code to pass the event to the children.
- super.onMouseDown(mouse);
-
- if (mouse.isMouseWheelUp()) {
- imageField.setTop(imageField.getTop() - wheelScrollSize);
- } else if (mouse.isMouseWheelDown()) {
- imageField.setTop(imageField.getTop() + wheelScrollSize);
- }
- setVerticalValue(imageField.getTop());
- }
-
- /**
- * Handle mouse release events.
- *
- * @param mouse mouse button release event
- */
- @Override
- public void onMouseUp(final TMouseEvent mouse) {
- // Use TWidget's code to pass the event to the children.
- super.onMouseUp(mouse);
-
- if (mouse.isMouse1() && mouseOnVerticalScroller(mouse)) {
- // Clicked/dragged on vertical scrollbar
- imageField.setTop(getVerticalValue());
- }
- if (mouse.isMouse1() && mouseOnHorizontalScroller(mouse)) {
- // Clicked/dragged on horizontal scrollbar
- imageField.setLeft(getHorizontalValue());
- }
- }
-
- /**
- * Method that subclasses can override to handle mouse movements.
- *
- * @param mouse mouse motion event
- */
- @Override
- public void onMouseMotion(final TMouseEvent mouse) {
- // Use TWidget's code to pass the event to the children.
- super.onMouseMotion(mouse);
-
- if (mouse.isMouse1() && mouseOnVerticalScroller(mouse)) {
- // Clicked/dragged on vertical scrollbar
- imageField.setTop(getVerticalValue());
- }
- if (mouse.isMouse1() && mouseOnHorizontalScroller(mouse)) {
- // Clicked/dragged on horizontal scrollbar
- imageField.setLeft(getHorizontalValue());
- }
- }
-
- /**
- * Handle window/screen resize events.
- *
- * @param event resize event
- */
- @Override
- public void onResize(final TResizeEvent event) {
- if (event.getType() == TResizeEvent.Type.WIDGET) {
- // Resize the image field
- TResizeEvent imageSize = new TResizeEvent(TResizeEvent.Type.WIDGET,
- event.getWidth() - 2, event.getHeight() - 2);
- imageField.onResize(imageSize);
-
- // Have TScrollableWindow handle the scrollbars
- super.onResize(event);
- return;
- }
-
- // Pass to children instead
- for (TWidget widget: getChildren()) {
- widget.onResize(event);
- }
- }
-
- /**
- * Handle keystrokes.
- *
- * @param keypress keystroke event
- */
- @Override
- public void onKeypress(final TKeypressEvent keypress) {
- if (keypress.equals(kbUp)) {
- verticalDecrement();
- imageField.setTop(getVerticalValue());
- return;
- }
- if (keypress.equals(kbDown)) {
- verticalIncrement();
- imageField.setTop(getVerticalValue());
- return;
- }
- if (keypress.equals(kbPgUp)) {
- bigVerticalDecrement();
- imageField.setTop(getVerticalValue());
- return;
- }
- if (keypress.equals(kbPgDn)) {
- bigVerticalIncrement();
- imageField.setTop(getVerticalValue());
- return;
- }
- if (keypress.equals(kbRight)) {
- horizontalIncrement();
- imageField.setLeft(getHorizontalValue());
- return;
- }
- if (keypress.equals(kbLeft)) {
- horizontalDecrement();
- imageField.setLeft(getHorizontalValue());
- return;
- }
-
- // We did not take it, let the TImage instance see it.
- super.onKeypress(keypress);
-
- setVerticalValue(imageField.getTop());
- setBottomValue(imageField.getRows() - imageField.getHeight());
- setHorizontalValue(imageField.getLeft());
- setRightValue(imageField.getColumns() - imageField.getWidth());
- }
-
- // ------------------------------------------------------------------------
- // TWindow ----------------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * Draw the window.
- */
- @Override
- public void draw() {
- // Draw as normal.
- super.draw();
-
- // We have to get the scrollbar values after we have let the image
- // try to draw.
- setBottomValue(imageField.getRows() - imageField.getHeight());
- setRightValue(imageField.getColumns() - imageField.getWidth());
- }
-
-}
git://git.nikiroo.be / fanfix.git / blobdiff