+++ /dev/null
-package org.argeo.cms.ui.eclipse.forms;
-
-import org.eclipse.swt.SWT;
-import org.eclipse.swt.custom.ScrolledComposite;
-import org.eclipse.swt.events.MouseEvent;
-//import org.eclipse.swt.graphics.Device;
-import org.eclipse.swt.graphics.FontMetrics;
-import org.eclipse.swt.graphics.GC;
-//import org.eclipse.swt.graphics.Image;
-//import org.eclipse.swt.graphics.ImageData;
-import org.eclipse.swt.graphics.Point;
-import org.eclipse.swt.graphics.Rectangle;
-import org.eclipse.swt.layout.GridData;
-import org.eclipse.swt.widgets.Combo;
-import org.eclipse.swt.widgets.Composite;
-import org.eclipse.swt.widgets.Control;
-import org.eclipse.swt.widgets.Label;
-import org.eclipse.swt.widgets.Layout;
-//import org.eclipse.swt.widgets.ScrollBar;
-import org.eclipse.swt.widgets.Text;
-//import org.eclipse.ui.forms.widgets.ColumnLayout;
-//import org.eclipse.ui.forms.widgets.Form;
-//import org.eclipse.ui.forms.widgets.FormText;
-//import org.eclipse.ui.forms.widgets.FormToolkit;
-//import org.eclipse.ui.forms.widgets.ILayoutExtension;
-//
-//import com.ibm.icu.text.BreakIterator;
-
-public class FormUtil {
- public static final String PLUGIN_ID = "org.eclipse.ui.forms"; //$NON-NLS-1$
-
- static final int H_SCROLL_INCREMENT = 5;
-
- static final int V_SCROLL_INCREMENT = 64;
-
- public static final String DEBUG = PLUGIN_ID + "/debug"; //$NON-NLS-1$
-
- public static final String DEBUG_TEXT = DEBUG + "/text"; //$NON-NLS-1$
- public static final String DEBUG_TEXTSIZE = DEBUG + "/textsize"; //$NON-NLS-1$
-
- public static final String DEBUG_FOCUS = DEBUG + "/focus"; //$NON-NLS-1$
-
- public static final String FOCUS_SCROLLING = "focusScrolling"; //$NON-NLS-1$
-
- public static final String IGNORE_BODY = "__ignore_body__"; //$NON-NLS-1$
-
- public static Text createText(Composite parent, String label,
- FormToolkit factory) {
- return createText(parent, label, factory, 1);
- }
-
- public static Text createText(Composite parent, String label,
- FormToolkit factory, int span) {
- factory.createLabel(parent, label);
- Text text = factory.createText(parent, ""); //$NON-NLS-1$
- int hfill = span == 1 ? GridData.FILL_HORIZONTAL
- : GridData.HORIZONTAL_ALIGN_FILL;
- GridData gd = new GridData(hfill | GridData.VERTICAL_ALIGN_CENTER);
- gd.horizontalSpan = span;
- text.setLayoutData(gd);
- return text;
- }
-
- public static Text createText(Composite parent, String label,
- FormToolkit factory, int span, int style) {
- Label l = factory.createLabel(parent, label);
- if ((style & SWT.MULTI) != 0) {
- GridData gd = new GridData(GridData.VERTICAL_ALIGN_BEGINNING);
- l.setLayoutData(gd);
- }
- Text text = factory.createText(parent, "", style); //$NON-NLS-1$
- int hfill = span == 1 ? GridData.FILL_HORIZONTAL
- : GridData.HORIZONTAL_ALIGN_FILL;
- GridData gd = new GridData(hfill | GridData.VERTICAL_ALIGN_CENTER);
- gd.horizontalSpan = span;
- text.setLayoutData(gd);
- return text;
- }
-
- public static Text createText(Composite parent, FormToolkit factory,
- int span) {
- Text text = factory.createText(parent, ""); //$NON-NLS-1$
- int hfill = span == 1 ? GridData.FILL_HORIZONTAL
- : GridData.HORIZONTAL_ALIGN_FILL;
- GridData gd = new GridData(hfill | GridData.VERTICAL_ALIGN_CENTER);
- gd.horizontalSpan = span;
- text.setLayoutData(gd);
- return text;
- }
-
- public static int computeMinimumWidth(GC gc, String text) {
-// BreakIterator wb = BreakIterator.getWordInstance();
-// wb.setText(text);
-// int last = 0;
-//
-// int width = 0;
-//
-// for (int loc = wb.first(); loc != BreakIterator.DONE; loc = wb.next()) {
-// String word = text.substring(last, loc);
-// Point extent = gc.textExtent(word);
-// width = Math.max(width, extent.x);
-// last = loc;
-// }
-// String lastWord = text.substring(last);
-// Point extent = gc.textExtent(lastWord);
-// width = Math.max(width, extent.x);
-// return width;
- return 0;
- }
-
- public static Point computeWrapSize(GC gc, String text, int wHint) {
-// BreakIterator wb = BreakIterator.getWordInstance();
-// wb.setText(text);
- FontMetrics fm = gc.getFontMetrics();
- int lineHeight = fm.getHeight();
-
- int saved = 0;
- int last = 0;
- int height = lineHeight;
- int maxWidth = 0;
-// for (int loc = wb.first(); loc != BreakIterator.DONE; loc = wb.next()) {
-// String word = text.substring(saved, loc);
-// Point extent = gc.textExtent(word);
-// if (extent.x > wHint) {
-// // overflow
-// saved = last;
-// height += extent.y;
-// // switch to current word so maxWidth will accommodate very long single words
-// word = text.substring(last, loc);
-// extent = gc.textExtent(word);
-// }
-// maxWidth = Math.max(maxWidth, extent.x);
-// last = loc;
-// }
- /*
- * Correct the height attribute in case it was calculated wrong due to wHint being less than maxWidth.
- * The recursive call proved to be the only thing that worked in all cases. Some attempts can be made
- * to estimate the height, but the algorithm needs to be run again to be sure.
- */
- if (maxWidth > wHint)
- return computeWrapSize(gc, text, maxWidth);
- return new Point(maxWidth, height);
- }
-
-// RAP [rh] paintWrapText unnecessary
-// public static void paintWrapText(GC gc, String text, Rectangle bounds) {
-// paintWrapText(gc, text, bounds, false);
-// }
-
-// RAP [rh] paintWrapText unnecessary
-// public static void paintWrapText(GC gc, String text, Rectangle bounds,
-// boolean underline) {
-// BreakIterator wb = BreakIterator.getWordInstance();
-// wb.setText(text);
-// FontMetrics fm = gc.getFontMetrics();
-// int lineHeight = fm.getHeight();
-// int descent = fm.getDescent();
-//
-// int saved = 0;
-// int last = 0;
-// int y = bounds.y;
-// int width = bounds.width;
-//
-// for (int loc = wb.first(); loc != BreakIterator.DONE; loc = wb.next()) {
-// String line = text.substring(saved, loc);
-// Point extent = gc.textExtent(line);
-//
-// if (extent.x > width) {
-// // overflow
-// String prevLine = text.substring(saved, last);
-// gc.drawText(prevLine, bounds.x, y, true);
-// if (underline) {
-// Point prevExtent = gc.textExtent(prevLine);
-// int lineY = y + lineHeight - descent + 1;
-// gc
-// .drawLine(bounds.x, lineY, bounds.x + prevExtent.x,
-// lineY);
-// }
-//
-// saved = last;
-// y += lineHeight;
-// }
-// last = loc;
-// }
-// // paint the last line
-// String lastLine = text.substring(saved, last);
-// gc.drawText(lastLine, bounds.x, y, true);
-// if (underline) {
-// int lineY = y + lineHeight - descent + 1;
-// Point lastExtent = gc.textExtent(lastLine);
-// gc.drawLine(bounds.x, lineY, bounds.x + lastExtent.x, lineY);
-// }
-// }
-
- public static ScrolledComposite getScrolledComposite(Control c) {
- Composite parent = c.getParent();
-
- while (parent != null) {
- if (parent instanceof ScrolledComposite) {
- return (ScrolledComposite) parent;
- }
- parent = parent.getParent();
- }
- return null;
- }
-
- public static void ensureVisible(Control c) {
- ScrolledComposite scomp = getScrolledComposite(c);
- if (scomp != null) {
- Object data = scomp.getData(FOCUS_SCROLLING);
- if (data == null || !data.equals(Boolean.FALSE))
- FormUtil.ensureVisible(scomp, c);
- }
- }
-
- public static void ensureVisible(ScrolledComposite scomp, Control control) {
- // if the control is a FormText we do not need to scroll since it will
- // ensure visibility of its segments as necessary
-// if (control instanceof FormText)
-// return;
- Point controlSize = control.getSize();
- Point controlOrigin = getControlLocation(scomp, control);
- ensureVisible(scomp, controlOrigin, controlSize);
- }
-
- public static void ensureVisible(ScrolledComposite scomp,
- Point controlOrigin, Point controlSize) {
- Rectangle area = scomp.getClientArea();
- Point scompOrigin = scomp.getOrigin();
-
- int x = scompOrigin.x;
- int y = scompOrigin.y;
-
- // horizontal right, but only if the control is smaller
- // than the client area
- if (controlSize.x < area.width
- && (controlOrigin.x + controlSize.x > scompOrigin.x
- + area.width)) {
- x = controlOrigin.x + controlSize.x - area.width;
- }
- // horizontal left - make sure the left edge of
- // the control is showing
- if (controlOrigin.x < x) {
- if (controlSize.x < area.width)
- x = controlOrigin.x + controlSize.x - area.width;
- else
- x = controlOrigin.x;
- }
- // vertical bottom
- if (controlSize.y < area.height
- && (controlOrigin.y + controlSize.y > scompOrigin.y
- + area.height)) {
- y = controlOrigin.y + controlSize.y - area.height;
- }
- // vertical top - make sure the top of
- // the control is showing
- if (controlOrigin.y < y) {
- if (controlSize.y < area.height)
- y = controlOrigin.y + controlSize.y - area.height;
- else
- y = controlOrigin.y;
- }
-
- if (scompOrigin.x != x || scompOrigin.y != y) {
- // scroll to reveal
- scomp.setOrigin(x, y);
- }
- }
-
- public static void ensureVisible(ScrolledComposite scomp, Control control,
- MouseEvent e) {
- Point controlOrigin = getControlLocation(scomp, control);
- int rX = controlOrigin.x + e.x;
- int rY = controlOrigin.y + e.y;
- Rectangle area = scomp.getClientArea();
- Point scompOrigin = scomp.getOrigin();
-
- int x = scompOrigin.x;
- int y = scompOrigin.y;
- // System.out.println("Ensure: area="+area+", origin="+scompOrigin+",
- // cloc="+controlOrigin+", csize="+controlSize+", x="+x+", y="+y);
-
- // horizontal right
- if (rX > scompOrigin.x + area.width) {
- x = rX - area.width;
- }
- // horizontal left
- else if (rX < x) {
- x = rX;
- }
- // vertical bottom
- if (rY > scompOrigin.y + area.height) {
- y = rY - area.height;
- }
- // vertical top
- else if (rY < y) {
- y = rY;
- }
-
- if (scompOrigin.x != x || scompOrigin.y != y) {
- // scroll to reveal
- scomp.setOrigin(x, y);
- }
- }
-
- public static Point getControlLocation(ScrolledComposite scomp,
- Control control) {
- int x = 0;
- int y = 0;
- Control content = scomp.getContent();
- Control currentControl = control;
- for (;;) {
- if (currentControl == content)
- break;
- Point location = currentControl.getLocation();
- // if (location.x > 0)
- // x += location.x;
- // if (location.y > 0)
- // y += location.y;
- x += location.x;
- y += location.y;
- currentControl = currentControl.getParent();
- }
- return new Point(x, y);
- }
-
- static void scrollVertical(ScrolledComposite scomp, boolean up) {
- scroll(scomp, 0, up ? -V_SCROLL_INCREMENT : V_SCROLL_INCREMENT);
- }
-
- static void scrollHorizontal(ScrolledComposite scomp, boolean left) {
- scroll(scomp, left ? -H_SCROLL_INCREMENT : H_SCROLL_INCREMENT, 0);
- }
-
- static void scrollPage(ScrolledComposite scomp, boolean up) {
- Rectangle clientArea = scomp.getClientArea();
- int increment = up ? -clientArea.height : clientArea.height;
- scroll(scomp, 0, increment);
- }
-
- static void scroll(ScrolledComposite scomp, int xoffset, int yoffset) {
- Point origin = scomp.getOrigin();
- Point contentSize = scomp.getContent().getSize();
- int xorigin = origin.x + xoffset;
- int yorigin = origin.y + yoffset;
- xorigin = Math.max(xorigin, 0);
- xorigin = Math.min(xorigin, contentSize.x - 1);
- yorigin = Math.max(yorigin, 0);
- yorigin = Math.min(yorigin, contentSize.y - 1);
- scomp.setOrigin(xorigin, yorigin);
- }
-
-// RAP [rh] FormUtil#updatePageIncrement: empty implementation
- public static void updatePageIncrement(ScrolledComposite scomp) {
-// ScrollBar vbar = scomp.getVerticalBar();
-// if (vbar != null) {
-// Rectangle clientArea = scomp.getClientArea();
-// int increment = clientArea.height - 5;
-// vbar.setPageIncrement(increment);
-// }
-// ScrollBar hbar = scomp.getHorizontalBar();
-// if (hbar != null) {
-// Rectangle clientArea = scomp.getClientArea();
-// int increment = clientArea.width - 5;
-// hbar.setPageIncrement(increment);
-// }
- }
-
- public static void processKey(int keyCode, Control c) {
- if (c.isDisposed()) {
- return;
- }
- ScrolledComposite scomp = FormUtil.getScrolledComposite(c);
- if (scomp != null) {
- if (c instanceof Combo)
- return;
- switch (keyCode) {
- case SWT.ARROW_DOWN:
- if (scomp.getData("novarrows") == null) //$NON-NLS-1$
- FormUtil.scrollVertical(scomp, false);
- break;
- case SWT.ARROW_UP:
- if (scomp.getData("novarrows") == null) //$NON-NLS-1$
- FormUtil.scrollVertical(scomp, true);
- break;
- case SWT.ARROW_LEFT:
- FormUtil.scrollHorizontal(scomp, true);
- break;
- case SWT.ARROW_RIGHT:
- FormUtil.scrollHorizontal(scomp, false);
- break;
- case SWT.PAGE_UP:
- FormUtil.scrollPage(scomp, true);
- break;
- case SWT.PAGE_DOWN:
- FormUtil.scrollPage(scomp, false);
- break;
- }
- }
- }
-
- public static boolean isWrapControl(Control c) {
- if ((c.getStyle() & SWT.WRAP) != 0)
- return true;
- if (c instanceof Composite) {
- return false;
-// return ((Composite) c).getLayout() instanceof ILayoutExtension;
- }
- return false;
- }
-
- public static int getWidthHint(int wHint, Control c) {
- boolean wrap = isWrapControl(c);
- return wrap ? wHint : SWT.DEFAULT;
- }
-
- public static int getHeightHint(int hHint, Control c) {
- if (c instanceof Composite) {
- Layout layout = ((Composite) c).getLayout();
-// if (layout instanceof ColumnLayout)
-// return hHint;
- }
- return SWT.DEFAULT;
- }
-
- public static int computeMinimumWidth(Control c, boolean changed) {
- if (c instanceof Composite) {
- Layout layout = ((Composite) c).getLayout();
-// if (layout instanceof ILayoutExtension)
-// return ((ILayoutExtension) layout).computeMinimumWidth(
-// (Composite) c, changed);
- }
- return c.computeSize(FormUtil.getWidthHint(5, c), SWT.DEFAULT, changed).x;
- }
-
- public static int computeMaximumWidth(Control c, boolean changed) {
- if (c instanceof Composite) {
- Layout layout = ((Composite) c).getLayout();
-// if (layout instanceof ILayoutExtension)
-// return ((ILayoutExtension) layout).computeMaximumWidth(
-// (Composite) c, changed);
- }
- return c.computeSize(SWT.DEFAULT, SWT.DEFAULT, changed).x;
- }
-
-// public static Form getForm(Control c) {
-// Composite parent = c.getParent();
-// while (parent != null) {
-// if (parent instanceof Form) {
-// return (Form) parent;
-// }
-// parent = parent.getParent();
-// }
-// return null;
-// }
-
-// RAP [rh] FormUtil#createAlphaMashImage unnecessary
-// public static Image createAlphaMashImage(Device device, Image srcImage) {
-// Rectangle bounds = srcImage.getBounds();
-// int alpha = 0;
-// int calpha = 0;
-// ImageData data = srcImage.getImageData();
-// // Create a new image with alpha values alternating
-// // between fully transparent (0) and fully opaque (255).
-// // This image will show the background through the
-// // transparent pixels.
-// for (int i = 0; i < bounds.height; i++) {
-// // scan line
-// alpha = calpha;
-// for (int j = 0; j < bounds.width; j++) {
-// // column
-// data.setAlpha(j, i, alpha);
-// alpha = alpha == 255 ? 0 : 255;
-// }
-// calpha = calpha == 255 ? 0 : 255;
-// }
-// return new Image(device, data);
-// }
-
- public static boolean mnemonicMatch(String text, char key) {
- char mnemonic = findMnemonic(text);
- if (mnemonic == '\0')
- return false;
- return Character.toUpperCase(key) == Character.toUpperCase(mnemonic);
- }
-
- private static char findMnemonic(String string) {
- int index = 0;
- int length = string.length();
- do {
- while (index < length && string.charAt(index) != '&')
- index++;
- if (++index >= length)
- return '\0';
- if (string.charAt(index) != '&')
- return string.charAt(index);
- index++;
- } while (index < length);
- return '\0';
- }
-
- public static void setFocusScrollingEnabled(Control c, boolean enabled) {
- ScrolledComposite scomp = null;
-
- if (c instanceof ScrolledComposite)
- scomp = (ScrolledComposite)c;
- else
- scomp = getScrolledComposite(c);
- if (scomp!=null)
- scomp.setData(FormUtil.FOCUS_SCROLLING, enabled?null:Boolean.FALSE);
- }
-
- // RAP [rh] FormUtil#setAntialias unnecessary
-// public static void setAntialias(GC gc, int style) {
-// if (!gc.getAdvanced()) {
-// gc.setAdvanced(true);
-// if (!gc.getAdvanced())
-// return;
-// }
-// gc.setAntialias(style);
-// }
-}
projects / lgpl / argeo-commons.git / blobdiff