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Diffstat (limited to 'examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/graphics/CurvesSWTTab.java')
-rw-r--r--examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/graphics/CurvesSWTTab.java389
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diff --git a/examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/graphics/CurvesSWTTab.java b/examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/graphics/CurvesSWTTab.java
deleted file mode 100644
index 156e7aa93b..0000000000
--- a/examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/graphics/CurvesSWTTab.java
+++ /dev/null
@@ -1,389 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2006 IBM Corporation and others.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Eclipse Public License v1.0
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/epl-v10.html
- *
- * Contributors:
- * IBM Corporation - initial API and implementation
- *******************************************************************************/
-
-package org.eclipse.swt.examples.graphics;
-
-import org.eclipse.swt.*;
-import org.eclipse.swt.events.*;
-import org.eclipse.swt.graphics.*;
-import org.eclipse.swt.widgets.*;
-
-/**
- * This tab presents cubic and quadratic curves that can be drawn. As a
- * demonstration, cubic and quadratic curves are used to spell out "SWT".
- * The user may reposition the cubic and quadratic handles.
- */
-public class CurvesSWTTab extends GraphicsTab {
- /** These rectangles represent the handles on the curves. */
- private Rectangle sRect1, sRect2, wRect1, wRect2, tTopRect1, tTopRect2,
- tBottomRect1, tBottomRect2;
-
- /** These values represent the positions of the curves. */
- private float sXPos, sYPos, wXPos, wYPos, topTXPos, topTYPos,
- botTXPos, botTYPos;
-
- /** These values represent the x and y displacement of each handle. */
- private float sDiffX1, sDiffY1, sDiffX2, sDiffY2;
- private float wDiffX1, wDiffY1, wDiffX2, wDiffY2;
- private float tTopDiffX1, tTopDiffY1, tTopDiffX2, tTopDiffY2;
- private float tBotDiffX1, tBotDiffY1, tBotDiffX2, tBotDiffY2;
-
- /** These are flags that indicate whether or not a handle has been moved. */
- private boolean sLeftPtMoved, sRightPtMoved, wPt1Moved, wPt2Moved,
- tTopPt1Moved, tTopPt2Moved, tBotPt1Moved, tBotPt2Moved;
-
- private MouseMoveListener mouseMoveListener;
- private MouseListener mouseListener;
- private Cursor cursor;
-
- /** true if hovering over a handle, false otherwise */
- private boolean hovering = false;
-
- /** true if left mouse button is held down, false otherwise */
- private boolean mouseDown = false;
-
-
-public CurvesSWTTab(GraphicsExample example) {
- super(example);
- sRect1 = new Rectangle(-75, 50, 5, 5);
- sRect2 = new Rectangle(75, 100, 5, 5);
- sDiffX1 = sDiffY1 = 0;
- sDiffX2 = sDiffY2 = 0;
- wRect1 = new Rectangle(80, 300, 5, 5);
- wRect2 = new Rectangle(120, 300, 5, 5);
- wDiffX1 = wDiffY1 = wDiffX2 = wDiffY2 = 0;
- tTopRect1 = new Rectangle(33, -20, 5, 5);
- tTopRect2 = new Rectangle(66, 20, 5, 5);
- tTopDiffX1 = tTopDiffY1 = tTopDiffX2 = tTopDiffY2 = 0;
- tBottomRect1 = new Rectangle(-33, 50, 5, 5);
- tBottomRect2 = new Rectangle(33, 100, 5, 5);
- tBotDiffX1 = tBotDiffY1 = tBotDiffX2 = tBotDiffY2 = 0;
-}
-
-public String getCategory() {
- return GraphicsExample.getResourceString("Curves"); //$NON-NLS-1$
-}
-
-public String getText() {
- return GraphicsExample.getResourceString("SWT"); //$NON-NLS-1$
-}
-
-public String getDescription() {
- return GraphicsExample.getResourceString("CurvesSWTDescription"); //$NON-NLS-1$
-}
-
-public boolean getDoubleBuffered() {
- return true;
-}
-
-public void dispose() {
- if (mouseListener != null)
- example.canvas.removeMouseListener(mouseListener);
-
- if (mouseMoveListener != null)
- example.canvas.removeMouseMoveListener(mouseMoveListener);
-
- if (cursor != null) {
- cursor.dispose();
- cursor = null;
- }
-}
-
- /**
- * This helper method determines whether or not the cursor is positioned
- * over a handle.
- *
- * @param e
- * A MouseEvent
- * @return true if cursor is positioned over a handle; false otherwise
- */
-private boolean isHovering(MouseEvent e) {
- Rectangle r1 = new Rectangle(sRect1.x + (int)sXPos - 1, sRect1.y + (int)sYPos - 1, sRect1.width+2, sRect1.height+2);
- Rectangle r2 = new Rectangle(sRect2.x + (int)sXPos - 1, sRect2.y + (int)sYPos - 1, sRect2.width+2, sRect2.height+2);
- Rectangle w1 = new Rectangle(wRect1.x + (int)wXPos - 1, wRect1.y + (int)wYPos - 1, wRect1.width+2, wRect1.height+2);
- Rectangle w2 = new Rectangle(wRect2.x + (int)wXPos - 1, wRect2.y + (int)wYPos - 1, wRect2.width+2, wRect2.height+2);
- Rectangle tTop1 = new Rectangle(tTopRect1.x + (int)topTXPos - 1, tTopRect1.y + (int)topTYPos - 1, tTopRect1.width+2, tTopRect1.height+2);
- Rectangle tTop2 = new Rectangle(tTopRect2.x + (int)topTXPos - 1, tTopRect2.y + (int)topTYPos - 1, tTopRect2.width+2, tTopRect2.height+2);
- Rectangle tBot1 = new Rectangle(tBottomRect1.x + (int)botTXPos - 1, tBottomRect1.y + (int)botTYPos - 1, tBottomRect1.width+2, tBottomRect1.height+2);
- Rectangle tBot2 = new Rectangle(tBottomRect2.x + (int)botTXPos - 1, tBottomRect2.y + (int)botTYPos - 1, tBottomRect2.width+2, tBottomRect2.height+2);
-
- return ( r1.contains(e.x, e.y) || r2.contains(e.x, e.y)
- || w1.contains(e.x, e.y) || w2.contains(e.x, e.y)
- || tTop1.contains(e.x, e.y) || tTop2.contains(e.x, e.y)
- || tBot1.contains(e.x, e.y) || tBot2.contains(e.x, e.y) );
-}
-/**
- * Creates the widgets used to control the drawing.
- */
-public void createControlPanel(Composite parent) {
- if (cursor == null) {
- cursor = new Cursor(parent.getDisplay(), SWT.CURSOR_HAND);
- }
-
- mouseMoveListener = new MouseMoveListener() {
-
- public void mouseMove(MouseEvent e) {
- if (hovering && mouseDown) {
- example.canvas.setCursor(cursor);
- } else if (isHovering(e)) {
- example.canvas.setCursor(cursor);
- hovering = true;
- } else {
- example.canvas.setCursor(null);
- hovering = false;
- }
-
- if (sLeftPtMoved) {
- sDiffX1 = sDiffX1 + e.x - (int)sXPos - sRect1.x;
- sDiffY1 = sDiffY1 + e.y - (int)sYPos - sRect1.y;
- sRect1.x = e.x - (int)sXPos;
- sRect1.y = e.y - (int)sYPos;
- } else if (sRightPtMoved) {
- sDiffX2 = sDiffX2 + e.x - (int)sXPos - sRect2.x;
- sDiffY2 = sDiffY2 + e.y - (int)sYPos - sRect2.y;
- sRect2.x = e.x - (int)sXPos;
- sRect2.y = e.y - (int)sYPos;
- } else if (wPt1Moved) {
- wDiffX1 = wDiffX1 + e.x - (int)wXPos - wRect1.x;
- wDiffY1 = wDiffY1 + e.y - (int)wYPos - wRect1.y;
- wRect1.x = e.x - (int)wXPos;
- wRect1.y = e.y - (int)wYPos;
- } else if (wPt2Moved) {
- wDiffX2 = wDiffX2 + e.x - (int)wXPos - wRect2.x;
- wDiffY2 = wDiffY2 + e.y - (int)wYPos - wRect2.y;
- wRect2.x = e.x - (int)wXPos;
- wRect2.y = e.y - (int)wYPos;
- } else if (tTopPt1Moved) {
- tTopDiffX1 = tTopDiffX1 + e.x - (int)topTXPos - tTopRect1.x;
- tTopDiffY1 = tTopDiffY1 + e.y - (int)topTYPos - tTopRect1.y;
- tTopRect1.x = e.x - (int)topTXPos;
- tTopRect1.y = e.y - (int)topTYPos;
- } else if (tTopPt2Moved) {
- tTopDiffX2 = tTopDiffX2 + e.x - (int)topTXPos - tTopRect2.x;
- tTopDiffY2 = tTopDiffY2 + e.y - (int)topTYPos - tTopRect2.y;
- tTopRect2.x = e.x - (int)topTXPos;
- tTopRect2.y = e.y - (int)topTYPos;
- } else if (tBotPt1Moved) {
- tBotDiffX1 = tBotDiffX1 + e.x - (int)botTXPos - tBottomRect1.x;
- tBotDiffY1 = tBotDiffY1 + e.y - (int)botTYPos - tBottomRect1.y;
- tBottomRect1.x = e.x - (int)botTXPos;
- tBottomRect1.y = e.y - (int)botTYPos;
- } else if (tBotPt2Moved) {
- tBotDiffX2 = tBotDiffX2 + e.x - (int)botTXPos - tBottomRect2.x;
- tBotDiffY2 = tBotDiffY2 + e.y - (int)botTYPos - tBottomRect2.y;
- tBottomRect2.x = e.x - (int)botTXPos;
- tBottomRect2.y = e.y - (int)botTYPos;
- }
- example.redraw();
- }
- };
-
- mouseListener = new MouseListener() {
-
- public void mouseDoubleClick(MouseEvent e) {}
-
- /**
- * Sent when a mouse button is pressed.
- *
- * @param e an event containing information about the mouse button press
- */
- public void mouseDown(MouseEvent e) {
- Rectangle r1 = new Rectangle(sRect1.x + (int)sXPos - 1, sRect1.y + (int)sYPos - 1, sRect1.width+2, sRect1.height+2);
- Rectangle r2 = new Rectangle(sRect2.x + (int)sXPos - 1, sRect2.y + (int)sYPos - 1, sRect2.width+2, sRect2.height+2);
- Rectangle w1 = new Rectangle(wRect1.x + (int)wXPos - 1, wRect1.y + (int)wYPos - 1, wRect1.width+2, wRect1.height+2);
- Rectangle w2 = new Rectangle(wRect2.x + (int)wXPos - 1, wRect2.y + (int)wYPos - 1, wRect2.width+2, wRect2.height+2);
- Rectangle tTop1 = new Rectangle(tTopRect1.x + (int)topTXPos - 1, tTopRect1.y + (int)topTYPos - 1, tTopRect1.width+2, tTopRect1.height+2);
- Rectangle tTop2 = new Rectangle(tTopRect2.x + (int)topTXPos - 1, tTopRect2.y + (int)topTYPos - 1, tTopRect2.width+2, tTopRect2.height+2);
- Rectangle tBot1 = new Rectangle(tBottomRect1.x + (int)botTXPos - 1, tBottomRect1.y + (int)botTYPos - 1, tBottomRect1.width+2, tBottomRect1.height+2);
- Rectangle tBot2 = new Rectangle(tBottomRect2.x + (int)botTXPos - 1, tBottomRect2.y + (int)botTYPos - 1, tBottomRect2.width+2, tBottomRect2.height+2);
-
- if (r1.contains(e.x, e.y)) {
- sLeftPtMoved = true;
- mouseDown = true;
- } else if (r2.contains(e.x, e.y)) {
- sRightPtMoved = true;
- mouseDown = true;
- } else if (w1.contains(e.x, e.y)) {
- wPt1Moved = true;
- mouseDown = true;
- } else if (w2.contains(e.x, e.y)) {
- wPt2Moved = true;
- mouseDown = true;
- } else if (tTop1.contains(e.x, e.y)) {
- tTopPt1Moved = true;
- mouseDown = true;
- } else if (tTop2.contains(e.x, e.y)) {
- tTopPt2Moved = true;
- mouseDown = true;
- } else if (tBot1.contains(e.x, e.y)) {
- tBotPt1Moved = true;
- mouseDown = true;
- } else if (tBot2.contains(e.x, e.y)) {
- tBotPt2Moved = true;
- mouseDown = true;
- }
- }
-
- /**
- * Sent when a mouse button is released.
- *
- * @param e an event containing information about the mouse button release
- */
- public void mouseUp(MouseEvent e) {
- mouseDown = false;
- if (isHovering(e)) {
- example.canvas.setCursor(cursor);
- } else {
- example.canvas.setCursor(null);
- }
- if (sLeftPtMoved)
- sLeftPtMoved = false;
- if (sRightPtMoved)
- sRightPtMoved = false;
- if (wPt1Moved)
- wPt1Moved = false;
- if (wPt2Moved)
- wPt2Moved = false;
- if (tTopPt1Moved)
- tTopPt1Moved = false;
- if (tTopPt2Moved)
- tTopPt2Moved = false;
- if (tBotPt1Moved)
- tBotPt1Moved = false;
- if (tBotPt2Moved)
- tBotPt2Moved = false;
-
- example.redraw();
- }
- };
- example.canvas.addMouseMoveListener(mouseMoveListener);
- example.canvas.addMouseListener(mouseListener);
-}
-
-public void paint(GC gc, int width, int height) {
- if (!example.checkAdvancedGraphics()) return;
- Device device = gc.getDevice();
-
- Font font = new Font(device, getPlatformFont(), 16, SWT.ITALIC);
- gc.setFont(font);
- gc.setLineWidth(2);
-
- Transform transform;
-
- // ----- letter s -----
- sXPos = 4*width/16;
- sYPos = (height-150)/2;
-
- transform = new Transform(device);
- transform.translate(sXPos, sYPos);
- gc.setTransform(transform);
- transform.dispose();
-
- gc.setForeground(device.getSystemColor(SWT.COLOR_DARK_BLUE));
- gc.drawString(GraphicsExample.getResourceString("Cubic"), 0, 175, true);
-
- Path path = new Path(device);
- path.cubicTo(-200 + sDiffX1, 50 + sDiffY1, 200 + sDiffX2, 100 + sDiffY2, 0, 150);
- gc.drawPath(path);
- path.dispose();
-
- // draw the spline points
- gc.setTransform(null);
- gc.drawRectangle(sRect1.x + (int)sXPos, sRect1.y + (int)sYPos, sRect1.width, sRect1.height);
- gc.drawRectangle(sRect2.x + (int)sXPos, sRect2.y + (int)sYPos, sRect2.width, sRect2.height);
-
- // ----- letter w -----
- wXPos = 6*width/16;
- wYPos = (height-150)/2;
-
- transform = new Transform(device);
- transform.translate(wXPos, wYPos);
- gc.setTransform(transform);
- transform.dispose();
-
- gc.setForeground(device.getSystemColor(SWT.COLOR_GRAY));
- gc.drawString(GraphicsExample.getResourceString("Quadratic"), 0, -50, true);
- gc.drawString(GraphicsExample.getResourceString("Quadratic"), 110, -50, true);
-
- path = new Path(device);
- path.quadTo(100 + wDiffX1, 300 + wDiffY1, 100, 0);
- path.quadTo(100+wDiffX2, 300+wDiffY2, 200, 0);
- gc.drawPath(path);
- path.dispose();
-
- gc.setTransform(null);
- gc.drawRectangle(wRect1.x + (int)wXPos, wRect1.y + (int)wYPos, wRect1.width, wRect1.height);
- gc.drawRectangle(wRect2.x + (int)wXPos, wRect2.y + (int)wYPos, wRect2.width, wRect2.height);
-
-
- // ----- top of letter t -----
- topTXPos = 11*width/16;
- topTYPos = (height-150)/2;
-
- transform = new Transform(device);
- transform.translate(topTXPos, topTYPos);
- gc.setTransform(transform);
- transform.dispose();
-
- gc.setForeground(device.getSystemColor(SWT.COLOR_YELLOW));
- gc.drawString(GraphicsExample.getResourceString("Cubic"), 25, -50, true);
-
- path = new Path(device);
- path.cubicTo(33 + tTopDiffX1, -20 + tTopDiffY1, 66 + tTopDiffX2, 20 + tTopDiffY2, 100, 0);
- gc.drawPath(path);
- path.dispose();
-
- gc.setTransform(null);
- gc.drawRectangle(tTopRect1.x + (int)topTXPos, tTopRect1.y + (int)topTYPos, tTopRect1.width, tTopRect1.height);
- gc.drawRectangle(tTopRect2.x + (int)topTXPos, tTopRect2.y + (int)topTYPos, tTopRect2.width, tTopRect2.height);
-
-
- // ----- vertical bar of letter t -----
- botTXPos = 12*width/16;
- botTYPos = (height-150)/2;
-
- transform = new Transform(device);
- transform.translate(botTXPos, botTYPos);
- gc.setTransform(transform);
- transform.dispose();
-
- gc.setForeground(device.getSystemColor(SWT.COLOR_RED));
- gc.drawString(GraphicsExample.getResourceString("Cubic"), 0, 175, true);
-
- path = new Path(device);
- path.cubicTo(-33 + tBotDiffX1, 50 + tBotDiffY1, 33 + tBotDiffX2, 100 + tBotDiffY2, 0, 150);
- gc.drawPath(path);
- path.dispose();
-
- gc.setTransform(null);
- gc.drawRectangle(tBottomRect1.x + (int)botTXPos, tBottomRect1.y + (int)botTYPos, tBottomRect1.width, tBottomRect1.height);
- gc.drawRectangle(tBottomRect2.x + (int)botTXPos, tBottomRect2.y + (int)botTYPos, tBottomRect2.width, tBottomRect2.height);
-
- font.dispose();
-}
-
-/**
- * Returns the name of a valid font for the resident platform.
- */
-static String getPlatformFont() {
- if(SWT.getPlatform() == "win32") {
- return "Arial";
- } else if (SWT.getPlatform() == "motif") {
- return "Helvetica";
- } else if (SWT.getPlatform() == "gtk") {
- return "Baekmuk Batang";
- } else if (SWT.getPlatform() == "carbon") {
- return "Arial";
- } else { // photon, etc ...
- return "Verdana";
- }
-}
-}

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