digitalmars.D.dwt - TextLayout.d:2915 causes EXCEPTION_ACCESS_VIOLATION ?
- yidabu (233/233) Aug 09 2008 Environment: dwt-win svn.
- Frank Benoit (2/243) Aug 11 2008 Complicated, takes more time.
- Frank Benoit (3/3) Aug 21 2008 This is now no more crashing. A window is shown with the embedded
- Frank Benoit (2/5) Aug 21 2008 The obj marker is fixed in the Snippet212.
Environment: dwt-win svn.
I porting styledtext.Snippet212, cause runtime exception:
Unhandled Exception: EXCEPTION_ACCESS_VIOLATION(0xc0000005) at ntdll.dll
(0x7c90316c) thread(1480)
->us
dwt\graphics\TextLayout.d:2915
dwt\graphics\TextLayout.d:267
dwt.graphics.TextLayout.TextLayout.getBounds () at
dwt\graphics\TextLayout.d:1387
dwt.custom.StyledText.StyledText.computeSize () at dwt\custom\StyledText.d:1784
dwt\layout\GridData.d:484
dwt.layout.GridLayout.GridLayout.layout () at dwt\layout\GridLayout.d:232
dwt\layout\GridLayout.d:208
dwt\widgets\Composite.d:1170
dwt\widgets\Composite.d:879
dwt\widgets\Composite.d:924
dwt\widgets\Decorations.d:888
dwt\widgets\Shell.d:1460
dwt\widgets\Control.d:2639
dwt\widgets\Control.d:3153
() from dmain2
() from dmain2
Code:
/*******************************************************************************
* Copyright (c) 2000, 2004 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
* Port to the D programming language:
* yidabu at gmail dot com ( D China
http://www.d-programming-language-china.org/ )
*******************************************************************************/
/*
Unhandled Exception: EXCEPTION_ACCESS_VIOLATION(0xc0000005) at ntdll.dll
(0x7c90316c) thread(1480)
->us
dwt\graphics\TextLayout.d:2915
dwt\graphics\TextLayout.d:267
dwt.graphics.TextLayout.TextLayout.getBounds () at
dwt\graphics\TextLayout.d:1387
dwt.custom.StyledText.StyledText.computeSize () at dwt\custom\StyledText.d:1784
dwt\layout\GridData.d:484
dwt.layout.GridLayout.GridLayout.layout () at dwt\layout\GridLayout.d:232
dwt\layout\GridLayout.d:208
dwt\widgets\Composite.d:1170
dwt\widgets\Composite.d:879
dwt\widgets\Composite.d:924
dwt\widgets\Decorations.d:888
dwt\widgets\Shell.d:1460
dwt\widgets\Control.d:2639
dwt\widgets\Control.d:3153
() from dmain2
() from dmain2
*/
module styledtext.Snippet212;
/**
* StyledText snippet: embed images
*
* For a list of all SWT example snippets see
* http://www.eclipse.org/swt/snippets/
*
* since 3.2
*/
import dwt.DWT;
import dwt.custom.StyledText;
import dwt.custom.StyleRange;
import dwt.layout.GridLayout;
import dwt.layout.GridData;
import dwt.widgets.Display;
import dwt.widgets.Shell;
import dwt.widgets.Button;
import dwt.widgets.FileDialog;
import dwt.widgets.Event;
import dwt.widgets.Listener;
import dwt.custom.PaintObjectEvent;
import dwt.custom.PaintObjectListener;
import dwt.events.VerifyEvent;
import dwt.events.VerifyListener;
import dwt.graphics.FontData;
import dwt.graphics.Font;
import dwt.graphics.Rectangle;
import dwt.graphics.GC;
import dwt.graphics.Image;
import dwt.graphics.GlyphMetrics;
import dwt.dwthelper.utils;
import dwt.dwthelper.System;
void main() {
static StyledText styledText;
static String text =
"This snippet shows how to embed images in a StyledText.\n"
"Here is one: \uFFFC, and here is another: \uFFFC."
"Use the add button to add an image from your filesystem to the StyledText at
the current caret offset.";
static Image[] images;
static int[] offsets;
static void addImage(Image image, int offset) {
StyleRange style = new StyleRange ();
style.start = offset;
style.length = 1;
Rectangle rect = image.getBounds();
style.metrics = new GlyphMetrics(rect.height, 0, rect.width);
styledText.setStyleRange(style);
}
Display display = new Display();
Shell shell = new Shell(display);
shell.setLayout(new GridLayout());
styledText = new StyledText(shell, DWT.WRAP | DWT.BORDER);
styledText.setLayoutData(new GridData(DWT.FILL, DWT.FILL, true, true));
styledText.setText(text);
images = [
display.getSystemImage(DWT.ICON_QUESTION),
display.getSystemImage(DWT.ICON_INFORMATION)
];
offsets = new int[images.length];
int lastOffset = 0;
for (int i = 0; i < images.length; i++) {
int offset = text.indexOf("\uFFFC", lastOffset);
offsets[i] = offset;
addImage(images[i], offset);
lastOffset = offset + 1;
}
void onVerify(Event e) {
int start = e.start;
int replaceCharCount = e.end - e.start;
int newCharCount = e.text.length;
for (int i = 0; i < offsets.length; i++) {
int offset = offsets[i];
if (start <= offset && offset < start + replaceCharCount) {
// this image is being deleted from the text
if (images[i] !is null && !images[i].isDisposed()) {
images[i].dispose();
images[i] = null;
}
offset = -1;
}
if (offset != -1 && offset >= start) offset += newCharCount -
replaceCharCount;
offsets[i] = offset;
}
}
// use a verify listener to keep the offsets up to date
styledText.addListener(DWT.Verify, dgListener(&onVerify));
styledText.addPaintObjectListener(new class(images, offsets)
PaintObjectListener {
Image[] images;
int[] offsets;
this( Image[] images_, int[] offsets_) {
this.images = images_;
this.offsets = offsets_;
}
public void paintObject(PaintObjectEvent event) {
GC gc = event.gc;
StyleRange style = event.style;
int start = style.start;
for (int i = 0; i < offsets.length; i++) {
int offset = offsets[i];
if (start == offset) {
Image image = images[i];
int x = event.x;
int y = event.y + event.ascent - style.metrics.ascent;
gc.drawImage(image, x, y);
}
}
}
});
Button button = new Button (shell, DWT.PUSH);
button.setText("Add Image");
button.setLayoutData(new GridData(DWT.CENTER, DWT.CENTER, false, false));
void onSelection(Event e)
{
FileDialog dialog = new FileDialog(shell);
String filename = dialog.open();
if (filename !is null) {
try {
Image image = new Image(display, filename);
int offset = styledText.getCaretOffset();
styledText.replaceTextRange(offset, 0, "\uFFFC");
int index = 0;
while (index < offsets.length) {
if (offsets[index] == -1 && images[index] is null)
break;
index++;
}
if (index == offsets.length) {
int[] tmpOffsets = new int[index + 1];
System.arraycopy(offsets, 0, tmpOffsets, 0,
offsets.length);
offsets = tmpOffsets;
Image[] tmpImages = new Image[index + 1];
System.arraycopy(images, 0, tmpImages, 0,
images.length);
images = tmpImages;
}
offsets[index] = offset;
images[index] = image;
addImage(image, offset);
} catch (Exception e) {
ExceptionPrintStackTrace(e);
}
}
}
button.addListener(DWT.Selection, dgListener(&onSelection));
shell.setSize(400, 400);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
for (int i = 0; i < images.length; i++) {
Image image = images[i];
if (image !is null && !image.isDisposed()) {
image.dispose();
}
}
display.dispose();
}
--
yidabu <yidabu.spam gmail.com>
http://www.dsource.org/projects/dwin
D ÓïÑÔ-ÖÐÎÄ(D Chinese):
http://www.d-programming-language-china.org/
http://bbs.d-programming-language-china.org/
http://dwin.d-programming-language-china.org/
http://scite4d.d-programming-language-china.org/
Aug 09 2008
Frank Benoit <keinfarbton googlemail.com>
yidabu schrieb:
Environment: dwt-win svn.
I porting styledtext.Snippet212, cause runtime exception:
Unhandled Exception: EXCEPTION_ACCESS_VIOLATION(0xc0000005) at ntdll.dll
(0x7c90316c) thread(1480)
->us
dwt\graphics\TextLayout.d:2915
dwt\graphics\TextLayout.d:267
dwt.graphics.TextLayout.TextLayout.getBounds () at
dwt\graphics\TextLayout.d:1387
dwt.custom.StyledText.StyledText.computeSize () at dwt\custom\StyledText.d:1784
dwt\layout\GridData.d:484
dwt.layout.GridLayout.GridLayout.layout () at dwt\layout\GridLayout.d:232
dwt\layout\GridLayout.d:208
dwt\widgets\Composite.d:1170
dwt\widgets\Composite.d:879
dwt\widgets\Composite.d:924
dwt\widgets\Decorations.d:888
dwt\widgets\Shell.d:1460
dwt\widgets\Control.d:2639
dwt\widgets\Control.d:3153
runMain(void*) () from dmain2
() from dmain2
Code:
/*******************************************************************************
* Copyright (c) 2000, 2004 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
* Port to the D programming language:
* yidabu at gmail dot com ( D China
http://www.d-programming-language-china.org/ )
*******************************************************************************/
/*
Unhandled Exception: EXCEPTION_ACCESS_VIOLATION(0xc0000005) at ntdll.dll
(0x7c90316c) thread(1480)
->us
dwt\graphics\TextLayout.d:2915
dwt\graphics\TextLayout.d:267
dwt.graphics.TextLayout.TextLayout.getBounds () at
dwt\graphics\TextLayout.d:1387
dwt.custom.StyledText.StyledText.computeSize () at dwt\custom\StyledText.d:1784
dwt\layout\GridData.d:484
dwt.layout.GridLayout.GridLayout.layout () at dwt\layout\GridLayout.d:232
dwt\layout\GridLayout.d:208
dwt\widgets\Composite.d:1170
dwt\widgets\Composite.d:879
dwt\widgets\Composite.d:924
dwt\widgets\Decorations.d:888
dwt\widgets\Shell.d:1460
dwt\widgets\Control.d:2639
dwt\widgets\Control.d:3153
runMain(void*) () from dmain2
() from dmain2
*/
module styledtext.Snippet212;
/**
* StyledText snippet: embed images
*
* For a list of all SWT example snippets see
* http://www.eclipse.org/swt/snippets/
*
* since 3.2
*/
import dwt.DWT;
import dwt.custom.StyledText;
import dwt.custom.StyleRange;
import dwt.layout.GridLayout;
import dwt.layout.GridData;
import dwt.widgets.Display;
import dwt.widgets.Shell;
import dwt.widgets.Button;
import dwt.widgets.FileDialog;
import dwt.widgets.Event;
import dwt.widgets.Listener;
import dwt.custom.PaintObjectEvent;
import dwt.custom.PaintObjectListener;
import dwt.events.VerifyEvent;
import dwt.events.VerifyListener;
import dwt.graphics.FontData;
import dwt.graphics.Font;
import dwt.graphics.Rectangle;
import dwt.graphics.GC;
import dwt.graphics.Image;
import dwt.graphics.GlyphMetrics;
import dwt.dwthelper.utils;
import dwt.dwthelper.System;
void main() {
static StyledText styledText;
static String text =
"This snippet shows how to embed images in a StyledText.\n"
"Here is one: \uFFFC, and here is another: \uFFFC."
"Use the add button to add an image from your filesystem to the StyledText
at the current caret offset.";
static Image[] images;
static int[] offsets;
static void addImage(Image image, int offset) {
StyleRange style = new StyleRange ();
style.start = offset;
style.length = 1;
Rectangle rect = image.getBounds();
style.metrics = new GlyphMetrics(rect.height, 0, rect.width);
styledText.setStyleRange(style);
}
Display display = new Display();
Shell shell = new Shell(display);
shell.setLayout(new GridLayout());
styledText = new StyledText(shell, DWT.WRAP | DWT.BORDER);
styledText.setLayoutData(new GridData(DWT.FILL, DWT.FILL, true, true));
styledText.setText(text);
images = [
display.getSystemImage(DWT.ICON_QUESTION),
display.getSystemImage(DWT.ICON_INFORMATION)
];
offsets = new int[images.length];
int lastOffset = 0;
for (int i = 0; i < images.length; i++) {
int offset = text.indexOf("\uFFFC", lastOffset);
offsets[i] = offset;
addImage(images[i], offset);
lastOffset = offset + 1;
}
void onVerify(Event e) {
int start = e.start;
int replaceCharCount = e.end - e.start;
int newCharCount = e.text.length;
for (int i = 0; i < offsets.length; i++) {
int offset = offsets[i];
if (start <= offset && offset < start + replaceCharCount) {
// this image is being deleted from the text
if (images[i] !is null && !images[i].isDisposed()) {
images[i].dispose();
images[i] = null;
}
offset = -1;
}
if (offset != -1 && offset >= start) offset += newCharCount -
replaceCharCount;
offsets[i] = offset;
}
}
// use a verify listener to keep the offsets up to date
styledText.addListener(DWT.Verify, dgListener(&onVerify));
styledText.addPaintObjectListener(new class(images, offsets)
PaintObjectListener {
Image[] images;
int[] offsets;
this( Image[] images_, int[] offsets_) {
this.images = images_;
this.offsets = offsets_;
}
public void paintObject(PaintObjectEvent event) {
GC gc = event.gc;
StyleRange style = event.style;
int start = style.start;
for (int i = 0; i < offsets.length; i++) {
int offset = offsets[i];
if (start == offset) {
Image image = images[i];
int x = event.x;
int y = event.y + event.ascent -
style.metrics.ascent;
gc.drawImage(image, x, y);
}
}
}
});
Button button = new Button (shell, DWT.PUSH);
button.setText("Add Image");
button.setLayoutData(new GridData(DWT.CENTER, DWT.CENTER, false, false));
void onSelection(Event e)
{
FileDialog dialog = new FileDialog(shell);
String filename = dialog.open();
if (filename !is null) {
try {
Image image = new Image(display, filename);
int offset = styledText.getCaretOffset();
styledText.replaceTextRange(offset, 0, "\uFFFC");
int index = 0;
while (index < offsets.length) {
if (offsets[index] == -1 && images[index] is null)
break;
index++;
}
if (index == offsets.length) {
int[] tmpOffsets = new int[index + 1];
System.arraycopy(offsets, 0, tmpOffsets, 0,
offsets.length);
offsets = tmpOffsets;
Image[] tmpImages = new Image[index + 1];
System.arraycopy(images, 0, tmpImages, 0,
images.length);
images = tmpImages;
}
offsets[index] = offset;
images[index] = image;
addImage(image, offset);
} catch (Exception e) {
ExceptionPrintStackTrace(e);
}
}
}
button.addListener(DWT.Selection, dgListener(&onSelection));
shell.setSize(400, 400);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
for (int i = 0; i < images.length; i++) {
Image image = images[i];
if (image !is null && !image.isDisposed()) {
image.dispose();
}
}
display.dispose();
}
Complicated, takes more time.
Aug 11 2008
This is now no more crashing. A window is shown with the embedded images. But there are still the "obj" marker chars and when selecting text there is strange behaviour.
Aug 21 2008
Frank Benoit schrieb:This is now no more crashing. A window is shown with the embedded images. But there are still the "obj" marker chars and when selecting text there is strange behaviour.The obj marker is fixed in the Snippet212.
Aug 21 2008