--- /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.backend;
+
+import java.awt.image.BufferedImage;
+
+import jexer.backend.GlyphMaker;
+import jexer.bits.Cell;
+import jexer.bits.CellAttributes;
+import jexer.bits.GraphicsChars;
+import jexer.bits.StringUtils;
+
+/**
+ * A logical screen composed of a 2D array of Cells.
+ */
+public class LogicalScreen implements Screen {
+
+ // ------------------------------------------------------------------------
+ // Variables --------------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Width of the visible window.
+ */
+ protected int width;
+
+ /**
+ * Height of the visible window.
+ */
+ protected int height;
+
+ /**
+ * Drawing offset for x.
+ */
+ private int offsetX;
+
+ /**
+ * Drawing offset for y.
+ */
+ private int offsetY;
+
+ /**
+ * Ignore anything drawn right of clipRight.
+ */
+ private int clipRight;
+
+ /**
+ * Ignore anything drawn below clipBottom.
+ */
+ private int clipBottom;
+
+ /**
+ * Ignore anything drawn left of clipLeft.
+ */
+ private int clipLeft;
+
+ /**
+ * Ignore anything drawn above clipTop.
+ */
+ private int clipTop;
+
+ /**
+ * The physical screen last sent out on flush().
+ */
+ protected Cell [][] physical;
+
+ /**
+ * The logical screen being rendered to.
+ */
+ protected Cell [][] logical;
+
+ /**
+ * Set if the user explicitly wants to redraw everything starting with a
+ * ECMATerminal.clearAll().
+ */
+ protected boolean reallyCleared;
+
+ /**
+ * If true, the cursor is visible and should be placed onscreen at
+ * (cursorX, cursorY) during a call to flushPhysical().
+ */
+ protected boolean cursorVisible;
+
+ /**
+ * Cursor X position if visible.
+ */
+ protected int cursorX;
+
+ /**
+ * Cursor Y position if visible.
+ */
+ protected int cursorY;
+
+ /**
+ * The last used height of a character cell in pixels, only used for
+ * full-width chars.
+ */
+ private int lastTextHeight = -1;
+
+ /**
+ * The glyph drawer for full-width chars.
+ */
+ private GlyphMaker glyphMaker = null;
+
+ // ------------------------------------------------------------------------
+ // Constructors -----------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Public constructor. Sets everything to not-bold, white-on-black.
+ */
+ protected LogicalScreen() {
+ offsetX = 0;
+ offsetY = 0;
+ width = 80;
+ height = 24;
+ logical = null;
+ physical = null;
+ reallocate(width, height);
+ }
+
+ // ------------------------------------------------------------------------
+ // Screen -----------------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Get the width of a character cell in pixels.
+ *
+ * @return the width in pixels of a character cell
+ */
+ public int getTextWidth() {
+ // Default width is 16 pixels.
+ return 16;
+ }
+
+ /**
+ * Get the height of a character cell in pixels.
+ *
+ * @return the height in pixels of a character cell
+ */
+ public int getTextHeight() {
+ // Default height is 20 pixels.
+ return 20;
+ }
+
+ /**
+ * Set drawing offset for x.
+ *
+ * @param offsetX new drawing offset
+ */
+ public final void setOffsetX(final int offsetX) {
+ this.offsetX = offsetX;
+ }
+
+ /**
+ * Set drawing offset for y.
+ *
+ * @param offsetY new drawing offset
+ */
+ public final void setOffsetY(final int offsetY) {
+ this.offsetY = offsetY;
+ }
+
+ /**
+ * Get right drawing clipping boundary.
+ *
+ * @return drawing boundary
+ */
+ public final int getClipRight() {
+ return clipRight;
+ }
+
+ /**
+ * Set right drawing clipping boundary.
+ *
+ * @param clipRight new boundary
+ */
+ public final void setClipRight(final int clipRight) {
+ this.clipRight = clipRight;
+ }
+
+ /**
+ * Get bottom drawing clipping boundary.
+ *
+ * @return drawing boundary
+ */
+ public final int getClipBottom() {
+ return clipBottom;
+ }
+
+ /**
+ * Set bottom drawing clipping boundary.
+ *
+ * @param clipBottom new boundary
+ */
+ public final void setClipBottom(final int clipBottom) {
+ this.clipBottom = clipBottom;
+ }
+
+ /**
+ * Get left drawing clipping boundary.
+ *
+ * @return drawing boundary
+ */
+ public final int getClipLeft() {
+ return clipLeft;
+ }
+
+ /**
+ * Set left drawing clipping boundary.
+ *
+ * @param clipLeft new boundary
+ */
+ public final void setClipLeft(final int clipLeft) {
+ this.clipLeft = clipLeft;
+ }
+
+ /**
+ * Get top drawing clipping boundary.
+ *
+ * @return drawing boundary
+ */
+ public final int getClipTop() {
+ return clipTop;
+ }
+
+ /**
+ * Set top drawing clipping boundary.
+ *
+ * @param clipTop new boundary
+ */
+ public final void setClipTop(final int clipTop) {
+ this.clipTop = clipTop;
+ }
+
+ /**
+ * Get dirty flag.
+ *
+ * @return if true, the logical screen is not in sync with the physical
+ * screen
+ */
+ public final boolean isDirty() {
+ for (int x = 0; x < width; x++) {
+ for (int y = 0; y < height; y++) {
+ if (!logical[x][y].equals(physical[x][y])) {
+ return true;
+ }
+ if (logical[x][y].isBlink()) {
+ // Blinking screens are always dirty. There is
+ // opportunity for a Netscape blink tag joke here...
+ return true;
+ }
+ }
+ }
+
+ return false;
+ }
+
+ /**
+ * Get the attributes at one location.
+ *
+ * @param x column coordinate. 0 is the left-most column.
+ * @param y row coordinate. 0 is the top-most row.
+ * @return attributes at (x, y)
+ */
+ public final CellAttributes getAttrXY(final int x, final int y) {
+ CellAttributes attr = new CellAttributes();
+ if ((x >= 0) && (x < width) && (y >= 0) && (y < height)) {
+ attr.setTo(logical[x][y]);
+ }
+ return attr;
+ }
+
+ /**
+ * Get the cell at one location.
+ *
+ * @param x column coordinate. 0 is the left-most column.
+ * @param y row coordinate. 0 is the top-most row.
+ * @return the character + attributes
+ */
+ public Cell getCharXY(final int x, final int y) {
+ Cell cell = new Cell();
+ if ((x >= 0) && (x < width) && (y >= 0) && (y < height)) {
+ cell.setTo(logical[x][y]);
+ }
+ return cell;
+ }
+
+ /**
+ * Set the attributes at one location.
+ *
+ * @param x column coordinate. 0 is the left-most column.
+ * @param y row coordinate. 0 is the top-most row.
+ * @param attr attributes to use (bold, foreColor, backColor)
+ */
+ public final void putAttrXY(final int x, final int y,
+ final CellAttributes attr) {
+
+ putAttrXY(x, y, attr, true);
+ }
+
+ /**
+ * Set the attributes at one location.
+ *
+ * @param x column coordinate. 0 is the left-most column.
+ * @param y row coordinate. 0 is the top-most row.
+ * @param attr attributes to use (bold, foreColor, backColor)
+ * @param clip if true, honor clipping/offset
+ */
+ public final void putAttrXY(final int x, final int y,
+ final CellAttributes attr, final boolean clip) {
+
+ int X = x;
+ int Y = y;
+
+ if (clip) {
+ if ((x < clipLeft)
+ || (x >= clipRight)
+ || (y < clipTop)
+ || (y >= clipBottom)
+ ) {
+ return;
+ }
+ X += offsetX;
+ Y += offsetY;
+ }
+
+ if ((X >= 0) && (X < width) && (Y >= 0) && (Y < height)) {
+ logical[X][Y].setTo(attr);
+
+ // If this happens to be the cursor position, make the position
+ // dirty.
+ if ((cursorX == X) && (cursorY == Y)) {
+ physical[cursorX][cursorY].unset();
+ unsetImageRow(cursorY);
+ }
+ }
+ }
+
+ /**
+ * Fill the entire screen with one character with attributes.
+ *
+ * @param ch character to draw
+ * @param attr attributes to use (bold, foreColor, backColor)
+ */
+ public final void putAll(final int ch, final CellAttributes attr) {
+
+ for (int x = 0; x < width; x++) {
+ for (int y = 0; y < height; y++) {
+ putCharXY(x, y, ch, attr);
+ }
+ }
+ }
+
+ /**
+ * Render one character with attributes.
+ *
+ * @param x column coordinate. 0 is the left-most column.
+ * @param y row coordinate. 0 is the top-most row.
+ * @param ch character + attributes to draw
+ */
+ public final void putCharXY(final int x, final int y, final Cell ch) {
+ if ((x < clipLeft)
+ || (x >= clipRight)
+ || (y < clipTop)
+ || (y >= clipBottom)
+ ) {
+ return;
+ }
+
+ if ((StringUtils.width(ch.getChar()) == 2) && (!ch.isImage())) {
+ putFullwidthCharXY(x, y, ch);
+ return;
+ }
+
+ int X = x + offsetX;
+ int Y = y + offsetY;
+
+ // System.err.printf("putCharXY: %d, %d, %c\n", X, Y, ch);
+
+ if ((X >= 0) && (X < width) && (Y >= 0) && (Y < height)) {
+
+ // Do not put control characters on the display
+ if (!ch.isImage()) {
+ assert (ch.getChar() >= 0x20);
+ assert (ch.getChar() != 0x7F);
+ }
+ logical[X][Y].setTo(ch);
+
+ // If this happens to be the cursor position, make the position
+ // dirty.
+ if ((cursorX == X) && (cursorY == Y)) {
+ physical[cursorX][cursorY].unset();
+ unsetImageRow(cursorY);
+ }
+ }
+ }
+
+ /**
+ * Render one character with attributes.
+ *
+ * @param x column coordinate. 0 is the left-most column.
+ * @param y row coordinate. 0 is the top-most row.
+ * @param ch character to draw
+ * @param attr attributes to use (bold, foreColor, backColor)
+ */
+ public final void putCharXY(final int x, final int y, final int ch,
+ final CellAttributes attr) {
+
+ if ((x < clipLeft)
+ || (x >= clipRight)
+ || (y < clipTop)
+ || (y >= clipBottom)
+ ) {
+ return;
+ }
+
+ if (StringUtils.width(ch) == 2) {
+ putFullwidthCharXY(x, y, ch, attr);
+ return;
+ }
+
+ int X = x + offsetX;
+ int Y = y + offsetY;
+
+ // System.err.printf("putCharXY: %d, %d, %c\n", X, Y, ch);
+
+ if ((X >= 0) && (X < width) && (Y >= 0) && (Y < height)) {
+
+ // Do not put control characters on the display
+ assert (ch >= 0x20);
+ assert (ch != 0x7F);
+
+ logical[X][Y].setTo(attr);
+ logical[X][Y].setChar(ch);
+
+ // If this happens to be the cursor position, make the position
+ // dirty.
+ if ((cursorX == X) && (cursorY == Y)) {
+ physical[cursorX][cursorY].unset();
+ unsetImageRow(cursorY);
+ }
+ }
+ }
+
+ /**
+ * Render one character without changing the underlying attributes.
+ *
+ * @param x column coordinate. 0 is the left-most column.
+ * @param y row coordinate. 0 is the top-most row.
+ * @param ch character to draw
+ */
+ public final void putCharXY(final int x, final int y, final int ch) {
+ if ((x < clipLeft)
+ || (x >= clipRight)
+ || (y < clipTop)
+ || (y >= clipBottom)
+ ) {
+ return;
+ }
+
+ if (StringUtils.width(ch) == 2) {
+ putFullwidthCharXY(x, y, ch);
+ return;
+ }
+
+ int X = x + offsetX;
+ int Y = y + offsetY;
+
+ // System.err.printf("putCharXY: %d, %d, %c\n", X, Y, ch);
+
+ if ((X >= 0) && (X < width) && (Y >= 0) && (Y < height)) {
+ logical[X][Y].setChar(ch);
+
+ // If this happens to be the cursor position, make the position
+ // dirty.
+ if ((cursorX == X) && (cursorY == Y)) {
+ physical[cursorX][cursorY].unset();
+ unsetImageRow(cursorY);
+ }
+ }
+ }
+
+ /**
+ * Render a string. Does not wrap if the string exceeds the line.
+ *
+ * @param x column coordinate. 0 is the left-most column.
+ * @param y row coordinate. 0 is the top-most row.
+ * @param str string to draw
+ * @param attr attributes to use (bold, foreColor, backColor)
+ */
+ public final void putStringXY(final int x, final int y, final String str,
+ final CellAttributes attr) {
+
+ int i = x;
+ for (int j = 0; j < str.length();) {
+ int ch = str.codePointAt(j);
+ j += Character.charCount(ch);
+ putCharXY(i, y, ch, attr);
+ i += StringUtils.width(ch);
+ if (i == width) {
+ break;
+ }
+ }
+ }
+
+ /**
+ * Render a string without changing the underlying attribute. Does not
+ * wrap if the string exceeds the line.
+ *
+ * @param x column coordinate. 0 is the left-most column.
+ * @param y row coordinate. 0 is the top-most row.
+ * @param str string to draw
+ */
+ public final void putStringXY(final int x, final int y, final String str) {
+
+ int i = x;
+ for (int j = 0; j < str.length();) {
+ int ch = str.codePointAt(j);
+ j += Character.charCount(ch);
+ putCharXY(i, y, ch);
+ i += StringUtils.width(ch);
+ if (i == width) {
+ break;
+ }
+ }
+ }
+
+ /**
+ * Draw a vertical line from (x, y) to (x, y + n).
+ *
+ * @param x column coordinate. 0 is the left-most column.
+ * @param y row coordinate. 0 is the top-most row.
+ * @param n number of characters to draw
+ * @param ch character to draw
+ * @param attr attributes to use (bold, foreColor, backColor)
+ */
+ public final void vLineXY(final int x, final int y, final int n,
+ final int ch, final CellAttributes attr) {
+
+ for (int i = y; i < y + n; i++) {
+ putCharXY(x, i, ch, attr);
+ }
+ }
+
+ /**
+ * Draw a horizontal line from (x, y) to (x + n, y).
+ *
+ * @param x column coordinate. 0 is the left-most column.
+ * @param y row coordinate. 0 is the top-most row.
+ * @param n number of characters to draw
+ * @param ch character to draw
+ * @param attr attributes to use (bold, foreColor, backColor)
+ */
+ public final void hLineXY(final int x, final int y, final int n,
+ final int ch, final CellAttributes attr) {
+
+ for (int i = x; i < x + n; i++) {
+ putCharXY(i, y, ch, attr);
+ }
+ }
+
+ /**
+ * Change the width. Everything on-screen will be destroyed and must be
+ * redrawn.
+ *
+ * @param width new screen width
+ */
+ public final synchronized void setWidth(final int width) {
+ reallocate(width, this.height);
+ }
+
+ /**
+ * Change the height. Everything on-screen will be destroyed and must be
+ * redrawn.
+ *
+ * @param height new screen height
+ */
+ public final synchronized void setHeight(final int height) {
+ reallocate(this.width, height);
+ }
+
+ /**
+ * Change the width and height. Everything on-screen will be destroyed
+ * and must be redrawn.
+ *
+ * @param width new screen width
+ * @param height new screen height
+ */
+ public final void setDimensions(final int width, final int height) {
+ reallocate(width, height);
+ resizeToScreen();
+ }
+
+ /**
+ * Resize the physical screen to match the logical screen dimensions.
+ */
+ public void resizeToScreen() {
+ // Subclasses are expected to override this.
+ }
+
+ /**
+ * Get the height.
+ *
+ * @return current screen height
+ */
+ public final synchronized int getHeight() {
+ return this.height;
+ }
+
+ /**
+ * Get the width.
+ *
+ * @return current screen width
+ */
+ public final synchronized int getWidth() {
+ return this.width;
+ }
+
+ /**
+ * Reset screen to not-bold, white-on-black. Also flushes the offset and
+ * clip variables.
+ */
+ public final synchronized void reset() {
+ for (int row = 0; row < height; row++) {
+ for (int col = 0; col < width; col++) {
+ logical[col][row].reset();
+ }
+ }
+ resetClipping();
+ }
+
+ /**
+ * Flush the offset and clip variables.
+ */
+ public final void resetClipping() {
+ offsetX = 0;
+ offsetY = 0;
+ clipLeft = 0;
+ clipTop = 0;
+ clipRight = width;
+ clipBottom = height;
+ }
+
+ /**
+ * Clear the logical screen.
+ */
+ public final void clear() {
+ reset();
+ }
+
+ /**
+ * Draw a box with a border and empty background.
+ *
+ * @param left left column of box. 0 is the left-most column.
+ * @param top top row of the box. 0 is the top-most row.
+ * @param right right column of box
+ * @param bottom bottom row of the box
+ * @param border attributes to use for the border
+ * @param background attributes to use for the background
+ */
+ public final void drawBox(final int left, final int top,
+ final int right, final int bottom,
+ final CellAttributes border, final CellAttributes background) {
+
+ drawBox(left, top, right, bottom, border, background, 1, false);
+ }
+
+ /**
+ * Draw a box with a border and empty background.
+ *
+ * @param left left column of box. 0 is the left-most column.
+ * @param top top row of the box. 0 is the top-most row.
+ * @param right right column of box
+ * @param bottom bottom row of the box
+ * @param border attributes to use for the border
+ * @param background attributes to use for the background
+ * @param borderType if 1, draw a single-line border; if 2, draw a
+ * double-line border; if 3, draw double-line top/bottom edges and
+ * single-line left/right edges (like Qmodem)
+ * @param shadow if true, draw a "shadow" on the box
+ */
+ public final void drawBox(final int left, final int top,
+ final int right, final int bottom,
+ final CellAttributes border, final CellAttributes background,
+ final int borderType, final boolean shadow) {
+
+ int boxWidth = right - left;
+ int boxHeight = bottom - top;
+
+ char cTopLeft;
+ char cTopRight;
+ char cBottomLeft;
+ char cBottomRight;
+ char cHSide;
+ char cVSide;
+
+ switch (borderType) {
+ case 1:
+ cTopLeft = GraphicsChars.ULCORNER;
+ cTopRight = GraphicsChars.URCORNER;
+ cBottomLeft = GraphicsChars.LLCORNER;
+ cBottomRight = GraphicsChars.LRCORNER;
+ cHSide = GraphicsChars.SINGLE_BAR;
+ cVSide = GraphicsChars.WINDOW_SIDE;
+ break;
+
+ case 2:
+ cTopLeft = GraphicsChars.WINDOW_LEFT_TOP_DOUBLE;
+ cTopRight = GraphicsChars.WINDOW_RIGHT_TOP_DOUBLE;
+ cBottomLeft = GraphicsChars.WINDOW_LEFT_BOTTOM_DOUBLE;
+ cBottomRight = GraphicsChars.WINDOW_RIGHT_BOTTOM_DOUBLE;
+ cHSide = GraphicsChars.DOUBLE_BAR;
+ cVSide = GraphicsChars.WINDOW_SIDE_DOUBLE;
+ break;
+
+ case 3:
+ cTopLeft = GraphicsChars.WINDOW_LEFT_TOP;
+ cTopRight = GraphicsChars.WINDOW_RIGHT_TOP;
+ cBottomLeft = GraphicsChars.WINDOW_LEFT_BOTTOM;
+ cBottomRight = GraphicsChars.WINDOW_RIGHT_BOTTOM;
+ cHSide = GraphicsChars.WINDOW_TOP;
+ cVSide = GraphicsChars.WINDOW_SIDE;
+ break;
+ default:
+ throw new IllegalArgumentException("Invalid border type: "
+ + borderType);
+ }
+
+ // Place the corner characters
+ putCharXY(left, top, cTopLeft, border);
+ putCharXY(left + boxWidth - 1, top, cTopRight, border);
+ putCharXY(left, top + boxHeight - 1, cBottomLeft, border);
+ putCharXY(left + boxWidth - 1, top + boxHeight - 1, cBottomRight,
+ border);
+
+ // Draw the box lines
+ hLineXY(left + 1, top, boxWidth - 2, cHSide, border);
+ vLineXY(left, top + 1, boxHeight - 2, cVSide, border);
+ hLineXY(left + 1, top + boxHeight - 1, boxWidth - 2, cHSide, border);
+ vLineXY(left + boxWidth - 1, top + 1, boxHeight - 2, cVSide, border);
+
+ // Fill in the interior background
+ for (int i = 1; i < boxHeight - 1; i++) {
+ hLineXY(1 + left, i + top, boxWidth - 2, ' ', background);
+ }
+
+ if (shadow) {
+ // Draw a shadow
+ drawBoxShadow(left, top, right, bottom);
+ }
+ }
+
+ /**
+ * Draw a box shadow.
+ *
+ * @param left left column of box. 0 is the left-most column.
+ * @param top top row of the box. 0 is the top-most row.
+ * @param right right column of box
+ * @param bottom bottom row of the box
+ */
+ public final void drawBoxShadow(final int left, final int top,
+ final int right, final int bottom) {
+
+ int boxTop = top;
+ int boxLeft = left;
+ int boxWidth = right - left;
+ int boxHeight = bottom - top;
+ CellAttributes shadowAttr = new CellAttributes();
+
+ // Shadows do not honor clipping but they DO honor offset.
+ int oldClipRight = clipRight;
+ int oldClipBottom = clipBottom;
+ // When offsetX or offsetY go negative, we need to increase the clip
+ // bounds.
+ clipRight = width - offsetX;
+ clipBottom = height - offsetY;
+
+ for (int i = 0; i < boxHeight; i++) {
+ Cell cell = getCharXY(offsetX + boxLeft + boxWidth,
+ offsetY + boxTop + 1 + i);
+ if (cell.getWidth() == Cell.Width.SINGLE) {
+ putAttrXY(boxLeft + boxWidth, boxTop + 1 + i, shadowAttr);
+ } else {
+ putCharXY(boxLeft + boxWidth, boxTop + 1 + i, ' ', shadowAttr);
+ }
+ cell = getCharXY(offsetX + boxLeft + boxWidth + 1,
+ offsetY + boxTop + 1 + i);
+ if (cell.getWidth() == Cell.Width.SINGLE) {
+ putAttrXY(boxLeft + boxWidth + 1, boxTop + 1 + i, shadowAttr);
+ } else {
+ putCharXY(boxLeft + boxWidth + 1, boxTop + 1 + i, ' ',
+ shadowAttr);
+ }
+ }
+ for (int i = 0; i < boxWidth; i++) {
+ Cell cell = getCharXY(offsetX + boxLeft + 2 + i,
+ offsetY + boxTop + boxHeight);
+ if (cell.getWidth() == Cell.Width.SINGLE) {
+ putAttrXY(boxLeft + 2 + i, boxTop + boxHeight, shadowAttr);
+ } else {
+ putCharXY(boxLeft + 2 + i, boxTop + boxHeight, ' ', shadowAttr);
+ }
+ }
+ clipRight = oldClipRight;
+ clipBottom = oldClipBottom;
+ }
+
+ /**
+ * Default implementation does nothing.
+ */
+ public void flushPhysical() {}
+
+ /**
+ * Put the cursor at (x,y).
+ *
+ * @param visible if true, the cursor should be visible
+ * @param x column coordinate to put the cursor on
+ * @param y row coordinate to put the cursor on
+ */
+ public void putCursor(final boolean visible, final int x, final int y) {
+ if ((cursorY >= 0)
+ && (cursorX >= 0)
+ && (cursorY <= height - 1)
+ && (cursorX <= width - 1)
+ ) {
+ // Make the current cursor position dirty
+ physical[cursorX][cursorY].unset();
+ unsetImageRow(cursorY);
+ }
+
+ cursorVisible = visible;
+ cursorX = x;
+ cursorY = y;
+ }
+
+ /**
+ * Hide the cursor.
+ */
+ public final void hideCursor() {
+ cursorVisible = false;
+ }
+
+ /**
+ * Get the cursor visibility.
+ *
+ * @return true if the cursor is visible
+ */
+ public boolean isCursorVisible() {
+ return cursorVisible;
+ }
+
+ /**
+ * Get the cursor X position.
+ *
+ * @return the cursor x column position
+ */
+ public int getCursorX() {
+ return cursorX;
+ }
+
+ /**
+ * Get the cursor Y position.
+ *
+ * @return the cursor y row position
+ */
+ public int getCursorY() {
+ return cursorY;
+ }
+
+ /**
+ * Set the window title. Default implementation does nothing.
+ *
+ * @param title the new title
+ */
+ public void setTitle(final String title) {}
+
+ // ------------------------------------------------------------------------
+ // LogicalScreen ----------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Reallocate screen buffers.
+ *
+ * @param width new width
+ * @param height new height
+ */
+ private synchronized void reallocate(final int width, final int height) {
+ if (logical != null) {
+ for (int row = 0; row < this.height; row++) {
+ for (int col = 0; col < this.width; col++) {
+ logical[col][row] = null;
+ }
+ }
+ logical = null;
+ }
+ logical = new Cell[width][height];
+ if (physical != null) {
+ for (int row = 0; row < this.height; row++) {
+ for (int col = 0; col < this.width; col++) {
+ physical[col][row] = null;
+ }
+ }
+ physical = null;
+ }
+ physical = new Cell[width][height];
+
+ for (int row = 0; row < height; row++) {
+ for (int col = 0; col < width; col++) {
+ physical[col][row] = new Cell();
+ logical[col][row] = new Cell();
+ }
+ }
+
+ this.width = width;
+ this.height = height;
+
+ clipLeft = 0;
+ clipTop = 0;
+ clipRight = width;
+ clipBottom = height;
+
+ reallyCleared = true;
+ }
+
+ /**
+ * Clear the physical screen.
+ */
+ public final void clearPhysical() {
+ for (int row = 0; row < height; row++) {
+ for (int col = 0; col < width; col++) {
+ physical[col][row].unset();
+ }
+ }
+ }
+
+ /**
+ * Unset every image cell on one row of the physical screen, forcing
+ * images on that row to be redrawn.
+ *
+ * @param y row coordinate. 0 is the top-most row.
+ */
+ public final void unsetImageRow(final int y) {
+ if ((y < 0) || (y >= height)) {
+ return;
+ }
+ for (int x = 0; x < width; x++) {
+ if (logical[x][y].isImage()) {
+ physical[x][y].unset();
+ }
+ }
+ }
+
+ /**
+ * Render one fullwidth cell.
+ *
+ * @param x column coordinate. 0 is the left-most column.
+ * @param y row coordinate. 0 is the top-most row.
+ * @param cell the cell to draw
+ */
+ public final void putFullwidthCharXY(final int x, final int y,
+ final Cell cell) {
+
+ int cellWidth = getTextWidth();
+ int cellHeight = getTextHeight();
+
+ if (lastTextHeight != cellHeight) {
+ glyphMaker = GlyphMaker.getInstance(cellHeight);
+ lastTextHeight = cellHeight;
+ }
+ BufferedImage image = glyphMaker.getImage(cell, cellWidth * 2,
+ cellHeight);
+ BufferedImage leftImage = image.getSubimage(0, 0, cellWidth,
+ cellHeight);
+ BufferedImage rightImage = image.getSubimage(cellWidth, 0, cellWidth,
+ cellHeight);
+
+ Cell left = new Cell(cell);
+ left.setImage(leftImage);
+ left.setWidth(Cell.Width.LEFT);
+ putCharXY(x, y, left);
+
+ Cell right = new Cell(cell);
+ right.setImage(rightImage);
+ right.setWidth(Cell.Width.RIGHT);
+ putCharXY(x + 1, y, right);
+ }
+
+ /**
+ * Render one fullwidth character with attributes.
+ *
+ * @param x column coordinate. 0 is the left-most column.
+ * @param y row coordinate. 0 is the top-most row.
+ * @param ch character to draw
+ * @param attr attributes to use (bold, foreColor, backColor)
+ */
+ public final void putFullwidthCharXY(final int x, final int y,
+ final int ch, final CellAttributes attr) {
+
+ Cell cell = new Cell(ch, attr);
+ putFullwidthCharXY(x, y, cell);
+ }
+
+ /**
+ * Render one fullwidth character with attributes.
+ *
+ * @param x column coordinate. 0 is the left-most column.
+ * @param y row coordinate. 0 is the top-most row.
+ * @param ch character to draw
+ */
+ public final void putFullwidthCharXY(final int x, final int y,
+ final int ch) {
+
+ Cell cell = new Cell(ch);
+ cell.setAttr(getAttrXY(x, y));
+ putFullwidthCharXY(x, y, cell);
+ }
+
+}
git://git.nikiroo.be / fanfix.git / blobdiff