Mercurial > projects > dwt-linux
view dwt/widgets/IME.d @ 255:5a30aa9820f3
removed tango.stdc.stringz imports and allow null for arrays and string arguments.
author | Frank Benoit <benoit@tionex.de> |
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date | Sun, 15 Jun 2008 22:32:20 +0200 |
parents | ce446666f5a2 |
children | c0d810de7093 |
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/******************************************************************************* * Copyright (c) 2007 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 *******************************************************************************/ module dwt.widgets.IME; import dwt.DWT; import dwt.graphics.Color; import dwt.graphics.TextStyle; import dwt.internal.Converter; import dwt.internal.gtk.OS; import dwt.widgets.Widget; import dwt.widgets.Canvas; import dwt.widgets.Event; import dwt.dwthelper.utils; public class IME : Widget { Canvas parent; int caretOffset; int startOffset; int commitCount; String text; int [] ranges; TextStyle [] styles; bool inComposition; /** * Prevents uninitialized instances from being created outside the package. */ this () { } /** * * @see DWT */ public this (Canvas parent, int style) { super (parent, style); this.parent = parent; createWidget (); } void createWidget () { text = ""; startOffset = -1; if (parent.getIME () is null) { parent.setIME (this); } } public int getCaretOffset () { checkWidget (); return startOffset + caretOffset; } public int getCommitCount () { checkWidget (); return commitCount; } public int getCompositionOffset () { checkWidget (); return startOffset; } public int [] getRanges () { checkWidget (); if (ranges is null) return new int [0]; int [] result = new int [ranges.length]; for (int i = 0; i < result.length; i++) { result [i] = ranges [i] + startOffset; } return result; } public TextStyle [] getStyles () { checkWidget (); if (styles is null) return new TextStyle [0]; TextStyle [] result = new TextStyle [styles.length]; System.arraycopy (styles, 0, result, 0, styles.length); return result; } public String getText () { checkWidget (); return text; } public bool getWideCaret () { checkWidget (); return false; } override int /*long*/ gtk_button_press_event (GtkWidget* widget, GdkEventButton* event) { if (!isInlineEnabled ()) return 0; auto imHandle_ = imHandle (); if (imHandle_ !is null) OS.gtk_im_context_reset (imHandle_); return 0; } override int /*long*/ gtk_commit (GtkIMContext* imcontext, char* textPtr) { if (!isInlineEnabled ()) return 0; bool doit = true; ranges = null; styles = null; caretOffset = commitCount = 0; if (textPtr !is null && inComposition) { int length = OS.strlen (textPtr); if (length !is 0) { char [] chars = fromStringz(textPtr).dup; Event event = new Event(); event.detail = DWT.COMPOSITION_CHANGED; event.start = startOffset; event.end = startOffset + text.length; event.text = text = chars !is null ? chars : ""; commitCount = text.length; sendEvent (DWT.ImeComposition, event); doit = event.doit; text = ""; startOffset = -1; commitCount = 0; } } inComposition = false; return doit ? 0 : 1; } override int /*long*/ gtk_preedit_changed (GtkIMContext* imcontext) { if (!isInlineEnabled ()) return 0; ranges = null; styles = null; commitCount = 0; auto imHandle_ = imHandle (); char* preeditString; void* pangoAttrs; int cursorPos; OS.gtk_im_context_get_preedit_string (imHandle_, &preeditString, &pangoAttrs, &cursorPos); caretOffset = cursorPos ; char [] chars = null; if (preeditString !is null) { int length = OS.strlen (preeditString); chars = fromStringz(preeditString).dup; if (pangoAttrs !is null) { int count = 0; auto iterator = OS.pango_attr_list_get_iterator (pangoAttrs ); while (OS.pango_attr_iterator_next (iterator)) count++; OS.pango_attr_iterator_destroy (iterator); ranges = new int [count * 2]; styles = new TextStyle [count]; iterator = OS.pango_attr_list_get_iterator (pangoAttrs ); PangoAttrColor* attrColor; PangoAttrInt* attrInt; int start; int end; for (int i = 0; i < count; i++) { OS.pango_attr_iterator_range (iterator, &start, &end); ranges [i * 2] = cast(int)/*64*/OS.g_utf8_pointer_to_offset (preeditString, preeditString + start); ranges [i * 2 + 1] = cast(int)/*64*/OS.g_utf8_pointer_to_offset (preeditString, preeditString + end) - 1; styles [i] = new TextStyle (null, null, null); auto attr = OS.pango_attr_iterator_get (iterator, OS.PANGO_ATTR_FOREGROUND); if (attr !is null) { attrColor = cast(PangoAttrColor*) attr; GdkColor* color = new GdkColor (); color.red = attrColor.color.red; color.green = attrColor.color.green; color.blue = attrColor.color.blue; styles [i].foreground = Color.gtk_new (display, color); } attr = OS.pango_attr_iterator_get (iterator, OS.PANGO_ATTR_BACKGROUND); if (attr !is null) { attrColor = cast(PangoAttrColor*) attr; GdkColor* color = new GdkColor (); color.red = attrColor.color.red; color.green = attrColor.color.green; color.blue = attrColor.color.blue; styles [i].background = Color.gtk_new (display, color); } attr = OS.pango_attr_iterator_get (iterator, OS.PANGO_ATTR_UNDERLINE); if (attr !is null) { attrInt = cast(PangoAttrInt*) attr; styles [i].underline = attrInt.value !is OS.PANGO_UNDERLINE_NONE;; styles [i].underlineStyle = DWT.UNDERLINE_SINGLE; switch (attrInt.value) { case OS.PANGO_UNDERLINE_DOUBLE: styles [i].underlineStyle = DWT.UNDERLINE_DOUBLE; break; case OS.PANGO_UNDERLINE_ERROR: styles [i].underlineStyle = DWT.UNDERLINE_ERROR; break; } if (styles [i].underline) { attr = OS.pango_attr_iterator_get(iterator, OS.PANGO_ATTR_UNDERLINE_COLOR); if (attr !is null) { attrColor = cast(PangoAttrColor*) attr; GdkColor* color = new GdkColor; color.red = attrColor.color.red; color.green = attrColor.color.green; color.blue = attrColor.color.blue; styles [i].underlineColor = Color.gtk_new (display, color); } } } OS.pango_attr_iterator_next (iterator); } OS.pango_attr_iterator_destroy (iterator); OS.pango_attr_list_unref (pangoAttrs); } OS.g_free (preeditString); } if (chars !is null) { if (text.length is 0) startOffset = -1; int end = startOffset + text.length; if (startOffset is -1) { Event event = new Event (); event.detail = DWT.COMPOSITION_SELECTION; sendEvent (DWT.ImeComposition, event); startOffset = event.start; end = event.end; } inComposition = true; Event event = new Event (); event.detail = DWT.COMPOSITION_CHANGED; event.start = startOffset; event.end = end; event.text = text = chars !is null ? chars : ""; sendEvent (DWT.ImeComposition, event); } return 1; } GtkIMContext* imHandle () { return parent.imHandle (); } bool isInlineEnabled () { return hooks (DWT.ImeComposition); } void releaseParent () { super.releaseParent (); if (this is parent.getIME ()) parent.setIME (null); } void releaseWidget () { super.releaseWidget (); parent = null; text = null; styles = null; ranges = null; } public void setCompositionOffset (int offset) { checkWidget (); if (offset < 0) return; if (startOffset !is -1) { startOffset = offset; } } }