package org.eclipse.swt.widgets; | |
/* | |
* (c) Copyright IBM Corp. 2000, 2001. | |
* All Rights Reserved | |
*/ | |
import org.eclipse.swt.internal.*; | |
import org.eclipse.swt.internal.photon.*; | |
import org.eclipse.swt.*; | |
import org.eclipse.swt.graphics.*; | |
public class Label extends Control { | |
String text = ""; | |
Image image; | |
public Label (Composite parent, int style) { | |
super (parent, checkStyle (style)); | |
} | |
static int checkStyle (int style) { | |
if ((style & SWT.SEPARATOR) != 0) return style; | |
return checkBits (style, SWT.LEFT, SWT.CENTER, SWT.RIGHT, 0, 0, 0); | |
} | |
public Point computeSize (int wHint, int hHint, boolean changed) { | |
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS); | |
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED); | |
if ((style & SWT.SEPARATOR) != 0) { | |
int border = getBorderWidth (); | |
int width = border * 2, height = border * 2; | |
if ((style & SWT.HORIZONTAL) != 0) { | |
width += DEFAULT_WIDTH; height += 3; | |
} else { | |
width += 3; height += DEFAULT_HEIGHT; | |
} | |
if (wHint != SWT.DEFAULT) width = wHint + (border * 2); | |
if (hHint != SWT.DEFAULT) height = hHint + (border * 2); | |
return new Point (width, height); | |
} | |
if ((style & SWT.WRAP) != 0) { | |
int [] args = { | |
OS.Pt_ARG_LABEL_TYPE, 0, 0, // 1 | |
OS.Pt_ARG_TEXT_FONT, 0, 0, // 4 | |
OS.Pt_ARG_LINE_SPACING, 0, 0, // 7 | |
OS.Pt_ARG_MARGIN_WIDTH, 0, 0, // 10 | |
OS.Pt_ARG_MARGIN_HEIGHT, 0, 0, // 13 | |
OS.Pt_ARG_MARGIN_LEFT, 0, 0, // 16 | |
OS.Pt_ARG_MARGIN_RIGHT, 0, 0, // 19 | |
OS.Pt_ARG_MARGIN_TOP, 0, 0, // 22 | |
OS.Pt_ARG_MARGIN_BOTTOM, 0, 0, // 25 | |
}; | |
OS.PtGetResources (handle, args.length / 3, args); | |
/* If we are wrapping text, calculate the height based on wHint. */ | |
if (args [1] == OS.Pt_Z_STRING) { | |
int length = OS.strlen (args [4]); | |
byte [] font = new byte [length + 1]; | |
OS.memmove (font, args [4], length); | |
Display display = getDisplay (); | |
PhRect_t rect = new PhRect_t (); | |
String string = text; | |
if (wHint != SWT.DEFAULT) { | |
string = display.wrapText (text, font, wHint); | |
} | |
if (hHint != SWT.DEFAULT) { | |
rect.ul_y = 0; | |
rect.lr_y = (short)(hHint - 1); | |
} else { | |
byte [] buffer = Converter.wcsToMbcs (null, string, false); | |
OS.PgExtentMultiText (rect, null, font, buffer, buffer.length, args [7]); | |
} | |
PhArea_t area = new PhArea_t (); | |
OS.PtSetAreaFromWidgetCanvas (handle, rect, area); | |
int width = area.size_w; | |
int height = area.size_h; | |
width += (args [10] * 2) + args [16] + args [19]; | |
height += (args [13] * 2) + args [22] + args [25]; | |
return new Point (width, height); | |
} | |
} | |
PhDim_t dim = new PhDim_t(); | |
if (!OS.PtWidgetIsRealized (handle)) OS.PtExtentWidget (handle); | |
OS.PtWidgetPreferredSize(handle, dim); | |
int width = dim.w, height = dim.h; | |
if (wHint != SWT.DEFAULT || hHint != SWT.DEFAULT) { | |
int [] args = { | |
OS.Pt_ARG_MARGIN_WIDTH, 0, 0, // 1 | |
OS.Pt_ARG_MARGIN_HEIGHT, 0, 0, // 4 | |
OS.Pt_ARG_MARGIN_LEFT, 0, 0, // 7 | |
OS.Pt_ARG_MARGIN_RIGHT, 0, 0, // 10 | |
OS.Pt_ARG_MARGIN_TOP, 0, 0, // 13 | |
OS.Pt_ARG_MARGIN_BOTTOM, 0, 0, // 16 | |
}; | |
OS.PtGetResources (handle, args.length / 3, args); | |
PhRect_t rect = new PhRect_t (); | |
PhArea_t area = new PhArea_t (); | |
rect.lr_x = (short) (wHint - 1); | |
rect.lr_y = (short) (hHint - 1); | |
OS.PtSetAreaFromWidgetCanvas (handle, rect, area); | |
if (wHint != SWT.DEFAULT) { | |
width = area.size_w + (args [1] * 2) + args [7] + args [10]; | |
} | |
if (hHint != SWT.DEFAULT) { | |
height = area.size_h + (args [4] * 2) + args [13] + args [16]; | |
} | |
} | |
return new Point (width, height); | |
} | |
void createHandle (int index) { | |
state |= HANDLE; | |
Display display = getDisplay (); | |
int parentHandle = parent.handle; | |
if ((style & SWT.SEPARATOR) != 0) { | |
int clazz = display.PtSeparator; | |
int orientation = (style & SWT.HORIZONTAL) != 0 ? OS.Pt_SEP_HORIZONTAL : OS.Pt_SEP_VERTICAL; | |
int type = OS.Pt_ETCHED_IN; | |
if ((style & (SWT.SHADOW_OUT)) != 0) type = OS.Pt_ETCHED_OUT; | |
int [] args = { | |
OS.Pt_ARG_SEP_FLAGS, orientation, OS.Pt_SEP_VERTICAL | OS.Pt_SEP_HORIZONTAL, | |
OS.Pt_ARG_SEP_TYPE, type, 0, | |
OS.Pt_ARG_RESIZE_FLAGS, 0, OS.Pt_RESIZE_XY_BITS, | |
}; | |
handle = OS.PtCreateWidget (clazz, parentHandle, args.length / 3, args); | |
if (handle == 0) error (SWT.ERROR_NO_HANDLES); | |
return; | |
} | |
int clazz = display.PtLabel; | |
int alignment = OS.Pt_LEFT; | |
if ((style & SWT.CENTER) != 0) alignment = OS.Pt_CENTER; | |
if ((style & SWT.RIGHT) != 0) alignment = OS.Pt_RIGHT; | |
int verticalAlign = (style & SWT.WRAP) != 0 ? OS.Pt_TOP : OS.Pt_CENTER; | |
boolean hasBorder = (style & SWT.BORDER) != 0; | |
int [] args = { | |
OS.Pt_ARG_FLAGS, hasBorder ? OS.Pt_HIGHLIGHTED : 0, OS.Pt_HIGHLIGHTED, | |
OS.Pt_ARG_HORIZONTAL_ALIGNMENT, alignment, 0, | |
OS.Pt_ARG_VERTICAL_ALIGNMENT, verticalAlign, 0, | |
OS.Pt_ARG_RESIZE_FLAGS, 0, OS.Pt_RESIZE_XY_BITS, | |
}; | |
handle = OS.PtCreateWidget (clazz, parentHandle, args.length / 3, args); | |
if (handle == 0) error (SWT.ERROR_NO_HANDLES); | |
} | |
public int getAlignment () { | |
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS); | |
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED); | |
if ((style & SWT.SEPARATOR) != 0) return 0; | |
if ((style & SWT.LEFT) != 0) return SWT.LEFT; | |
if ((style & SWT.CENTER) != 0) return SWT.CENTER; | |
if ((style & SWT.RIGHT) != 0) return SWT.RIGHT; | |
return SWT.LEFT; | |
} | |
public Image getImage () { | |
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS); | |
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED); | |
return image; | |
} | |
String getNameText () { | |
return getText (); | |
} | |
public String getText () { | |
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS); | |
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED); | |
if ((style & SWT.SEPARATOR) != 0) return ""; | |
return text; | |
} | |
int processPaint (int damage) { | |
int clazz = OS.PtLabel (); | |
if ((style & SWT.SEPARATOR) != 0) clazz = OS.PtSeparator (); | |
OS.PtSuperClassDraw (clazz, handle, damage); | |
return super.processPaint (damage); | |
} | |
int processActivate (int info) { | |
Composite control = this.parent; | |
while (control != null) { | |
Control [] children = control._getChildren (); | |
int index = 0; | |
while (index < children.length) { | |
if (children [index] == this) break; | |
index++; | |
} | |
index++; | |
if (index < children.length) { | |
if (children [index].setFocus ()) return OS.Pt_CONTINUE; | |
} | |
control = control.parent; | |
} | |
return OS.Pt_CONTINUE; | |
} | |
void releaseWidget () { | |
super.releaseWidget (); | |
image = null; | |
text = null; | |
} | |
public void setAlignment (int alignment) { | |
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS); | |
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED); | |
if ((style & SWT.SEPARATOR) != 0) return; | |
if ((alignment & (SWT.LEFT | SWT.RIGHT | SWT.CENTER)) == 0) return; | |
style &= ~(SWT.LEFT | SWT.RIGHT | SWT.CENTER); | |
style |= alignment & (SWT.LEFT | SWT.RIGHT | SWT.CENTER); | |
int [] args = {OS.Pt_ARG_HORIZONTAL_ALIGNMENT, OS.Pt_LEFT, 0}; | |
if ((style & SWT.CENTER) != 0) args [1] = OS.Pt_CENTER; | |
if ((style & SWT.RIGHT) != 0) args [1] = OS.Pt_RIGHT; | |
OS.PtSetResources (handle, args.length / 3, args); | |
} | |
void setBounds (int x, int y, int width, int height, boolean move, boolean resize) { | |
super.setBounds (x, y, width, height, move, resize); | |
if (resize && (style & SWT.WRAP) != 0) setText (text); | |
} | |
public boolean setFocus () { | |
return false; | |
} | |
public void setFont (Font font) { | |
super.setFont (font); | |
if ((style & SWT.WRAP) != 0) setText (text); | |
} | |
public void setImage (Image image) { | |
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS); | |
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED); | |
if ((style & SWT.SEPARATOR) != 0) return; | |
this.image = image; | |
int imageHandle = 0; | |
if (image != null) imageHandle = copyPhImage (image.handle); | |
int [] args = { | |
OS.Pt_ARG_LABEL_IMAGE, imageHandle, 0, | |
OS.Pt_ARG_LABEL_TYPE, OS.Pt_IMAGE, 0 | |
}; | |
OS.PtSetResources (handle, args.length / 3, args); | |
if (imageHandle != 0) OS.free (imageHandle); | |
} | |
public void setText (String string) { | |
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS); | |
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED); | |
if (string == null) error (SWT.ERROR_NULL_ARGUMENT); | |
if ((style & SWT.SEPARATOR) != 0) return; | |
text = string; | |
char [] unicode = new char [string.length ()]; | |
string.getChars (0, unicode.length, unicode, 0); | |
int i=0, j=0; | |
char mnemonic=0; | |
while (i < unicode.length) { | |
if ((unicode [j++] = unicode [i++]) == Mnemonic) { | |
if (i == unicode.length) {continue;} | |
if (unicode [i] == Mnemonic) {i++; continue;} | |
if (mnemonic == 0) mnemonic = unicode [i]; | |
j--; | |
} | |
} | |
while (j < unicode.length) unicode [j++] = 0; | |
/* Wrap the text if necessary, and convert to mbcs. */ | |
byte [] buffer; | |
if ((style & SWT.WRAP) != 0) { | |
int [] args = { | |
OS.Pt_ARG_TEXT_FONT, 0, 0, // 1 | |
OS.Pt_ARG_WIDTH, 0, 0, // 4 | |
OS.Pt_ARG_MARGIN_WIDTH, 0, 0, // 7 | |
OS.Pt_ARG_MARGIN_LEFT, 0, 0, // 10 | |
OS.Pt_ARG_MARGIN_RIGHT, 0, 0, // 13 | |
}; | |
OS.PtGetResources (handle, args.length / 3, args); | |
int length = OS.strlen (args [1]); | |
byte [] font = new byte [length + 1]; | |
OS.memmove (font, args [1], length); | |
int border = 0; | |
if ((style & SWT.BORDER) != 0) border = 2; | |
int width = args [4]; | |
width -= (args [7] * 2) + args [10] + args [13] + border * 2; | |
Display display = getDisplay (); | |
if (mnemonic != '\0') string = new String (unicode); | |
string = display.wrapText (string, font, width); | |
buffer = Converter.wcsToMbcs (null, string, true); | |
} else { | |
buffer = Converter.wcsToMbcs (null, unicode, true); | |
} | |
int ptr = OS.malloc (buffer.length); | |
OS.memmove (ptr, buffer, buffer.length); | |
int ptr2 = 0; | |
if (mnemonic != 0) { | |
byte [] buffer2 = Converter.wcsToMbcs (null, new char []{mnemonic}, true); | |
ptr2 = OS.malloc (buffer2.length); | |
OS.memmove (ptr2, buffer2, buffer2.length); | |
} | |
replaceMnemonic (mnemonic, 0); | |
int [] args = { | |
OS.Pt_ARG_TEXT_STRING, ptr, 0, | |
OS.Pt_ARG_LABEL_TYPE, OS.Pt_Z_STRING, 0, | |
OS.Pt_ARG_ACCEL_KEY, ptr2, 0, | |
}; | |
OS.PtSetResources (handle, args.length / 3, args); | |
OS.free (ptr); | |
OS.free (ptr2); | |
} | |
} |