uniselect.cpp

Trolltech公司发布的图形界面操作系统。可在qt-embedded-2.3.10平台上编译为嵌入式图形界面操作系统。

/**********************************************************************
** Copyright (C) 2000-2005 Trolltech AS.  All rights reserved.
**
** This file is part of the Qtopia Environment.
** 
** This program is free software; you can redistribute it and/or modify it
** under the terms of the GNU General Public License as published by the
** Free Software Foundation; either version 2 of the License, or (at your
** option) any later version.
** 
** A copy of the GNU GPL license version 2 is included in this package as 
** LICENSE.GPL.
**
** This program is distributed in the hope that it will be useful, but
** WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
** See the GNU General Public License for more details.
**
** In addition, as a special exception Trolltech gives permission to link
** the code of this program with Qtopia applications copyrighted, developed
** and distributed by Trolltech under the terms of the Qtopia Personal Use
** License Agreement. You must comply with the GNU General Public License
** in all respects for all of the code used other than the applications
** licensed under the Qtopia Personal Use License Agreement. If you modify
** this file, you may extend this exception to your version of the file,
** but you are not obligated to do so. If you do not wish to do so, delete
** this exception statement from your version.
** 
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact [e-mail] if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/

#include "uniselect.h"
#include <qscrollview.h>
#include <qcombobox.h>
#include <qfont.h>
#include <qfontmetrics.h>
#include <qlayout.h>
#include <qpainter.h>
#include <qvaluelist.h>
#include <qtopia/global.h>
#include <qtopia/fontmanager.h>

typedef struct BlockMap {
    ushort start;
    ushort stop;
    const char *name;
};

//# Start Code; Block Name

static const BlockMap blockMap[] = 
{
{0x0000, 0x007F, QT_TRANSLATE_NOOP("UniKeyboard", "Basic Latin")},
{0x0080, 0x00FF, QT_TRANSLATE_NOOP("UniKeyboard", "Latin-1 Supplement")},
{0x0100, 0x017F, QT_TRANSLATE_NOOP("UniKeyboard", "Latin Extended-A")},
{0x0180, 0x024F, QT_TRANSLATE_NOOP("UniKeyboard", "Latin Extended-B")},
{0x0250, 0x02AF, QT_TRANSLATE_NOOP("UniKeyboard", "IPA Extensions")},
{0x02B0, 0x02FF, QT_TRANSLATE_NOOP("UniKeyboard", "Spacing Modifier Letters")},
{0x0300, 0x036F, QT_TRANSLATE_NOOP("UniKeyboard", "Combining Diacritical Marks")},
{0x0370, 0x03FF, QT_TRANSLATE_NOOP("UniKeyboard", "Greek")},
{0x0400, 0x04FF, QT_TRANSLATE_NOOP("UniKeyboard", "Cyrillic")},
{0x0530, 0x058F, QT_TRANSLATE_NOOP("UniKeyboard", "Armenian")},
{0x0590, 0x05FF, QT_TRANSLATE_NOOP("UniKeyboard", "Hebrew")},
{0x0600, 0x06FF, QT_TRANSLATE_NOOP("UniKeyboard", "Arabic")},
{0x0700, 0x074F, QT_TRANSLATE_NOOP("UniKeyboard", "Syriac  ")},
{0x0780, 0x07BF, QT_TRANSLATE_NOOP("UniKeyboard", "Thaana")},
{0x0900, 0x097F, QT_TRANSLATE_NOOP("UniKeyboard", "Devanagari")},
{0x0980, 0x09FF, QT_TRANSLATE_NOOP("UniKeyboard", "Bengali")},
{0x0A00, 0x0A7F, QT_TRANSLATE_NOOP("UniKeyboard", "Gurmukhi")},
{0x0A80, 0x0AFF, QT_TRANSLATE_NOOP("UniKeyboard", "Gujarati")},
{0x0B00, 0x0B7F, QT_TRANSLATE_NOOP("UniKeyboard", "Oriya")},
{0x0B80, 0x0BFF, QT_TRANSLATE_NOOP("UniKeyboard", "Tamil")},
{0x0C00, 0x0C7F, QT_TRANSLATE_NOOP("UniKeyboard", "Telugu")},
{0x0C80, 0x0CFF, QT_TRANSLATE_NOOP("UniKeyboard", "Kannada")},
{0x0D00, 0x0D7F, QT_TRANSLATE_NOOP("UniKeyboard", "Malayalam")},
{0x0D80, 0x0DFF, QT_TRANSLATE_NOOP("UniKeyboard", "Sinhala")},
{0x0E00, 0x0E7F, QT_TRANSLATE_NOOP("UniKeyboard", "Thai")},
{0x0E80, 0x0EFF, QT_TRANSLATE_NOOP("UniKeyboard", "Lao")},
{0x0F00, 0x0FFF, QT_TRANSLATE_NOOP("UniKeyboard", "Tibetan")},
{0x1000, 0x109F, QT_TRANSLATE_NOOP("UniKeyboard", "Myanmar ")},
{0x10A0, 0x10FF, QT_TRANSLATE_NOOP("UniKeyboard", "Georgian")},
{0x1100, 0x11FF, QT_TRANSLATE_NOOP("UniKeyboard", "Hangul Jamo")},
{0x1200, 0x137F, QT_TRANSLATE_NOOP("UniKeyboard", "Ethiopic")},
{0x13A0, 0x13FF, QT_TRANSLATE_NOOP("UniKeyboard", "Cherokee")},
{0x1400, 0x167F, QT_TRANSLATE_NOOP("UniKeyboard", "Unified Canadian Aboriginal Syllabics")},
{0x1680, 0x169F, QT_TRANSLATE_NOOP("UniKeyboard", "Ogham")},
{0x16A0, 0x16FF, QT_TRANSLATE_NOOP("UniKeyboard", "Runic")},
{0x1780, 0x17FF, QT_TRANSLATE_NOOP("UniKeyboard", "Khmer")},
{0x1800, 0x18AF, QT_TRANSLATE_NOOP("UniKeyboard", "Mongolian")},
{0x1E00, 0x1EFF, QT_TRANSLATE_NOOP("UniKeyboard", "Latin Extended Additional")},
{0x1F00, 0x1FFF, QT_TRANSLATE_NOOP("UniKeyboard", "Greek Extended")},
{0x2000, 0x206F, QT_TRANSLATE_NOOP("UniKeyboard", "General Punctuation")},
{0x2070, 0x209F, QT_TRANSLATE_NOOP("UniKeyboard", "Superscripts and Subscripts")},
{0x20A0, 0x20CF, QT_TRANSLATE_NOOP("UniKeyboard", "Currency Symbols")},
{0x20D0, 0x20FF, QT_TRANSLATE_NOOP("UniKeyboard", "Combining Marks for Symbols")},
{0x2100, 0x214F, QT_TRANSLATE_NOOP("UniKeyboard", "Letterlike Symbols")},
{0x2150, 0x218F, QT_TRANSLATE_NOOP("UniKeyboard", "Number Forms")},
{0x2190, 0x21FF, QT_TRANSLATE_NOOP("UniKeyboard", "Arrows")},
{0x2200, 0x22FF, QT_TRANSLATE_NOOP("UniKeyboard", "Mathematical Operators")},
{0x2300, 0x23FF, QT_TRANSLATE_NOOP("UniKeyboard", "Miscellaneous Technical")},
{0x2400, 0x243F, QT_TRANSLATE_NOOP("UniKeyboard", "Control Pictures")},
{0x2440, 0x245F, QT_TRANSLATE_NOOP("UniKeyboard", "Optical Character Recognition")},
{0x2460, 0x24FF, QT_TRANSLATE_NOOP("UniKeyboard", "Enclosed Alphanumerics")},
{0x2500, 0x257F, QT_TRANSLATE_NOOP("UniKeyboard", "Box Drawing")},
{0x2580, 0x259F, QT_TRANSLATE_NOOP("UniKeyboard", "Block Elements")},
{0x25A0, 0x25FF, QT_TRANSLATE_NOOP("UniKeyboard", "Geometric Shapes")},
{0x2600, 0x26FF, QT_TRANSLATE_NOOP("UniKeyboard", "Miscellaneous Symbols")},
{0x2700, 0x27BF, QT_TRANSLATE_NOOP("UniKeyboard", "Dingbats")},
{0x2800, 0x28FF, QT_TRANSLATE_NOOP("UniKeyboard", "Braille Patterns")},
{0x2E80, 0x2EFF, QT_TRANSLATE_NOOP("UniKeyboard", "CJK Radicals Supplement")},
{0x2F00, 0x2FDF, QT_TRANSLATE_NOOP("UniKeyboard", "Kangxi Radicals")},
{0x2FF0, 0x2FFF, QT_TRANSLATE_NOOP("UniKeyboard", "Ideographic Description Characters")},
{0x3000, 0x303F, QT_TRANSLATE_NOOP("UniKeyboard", "CJK Symbols and Punctuation")},
{0x3040, 0x309F, QT_TRANSLATE_NOOP("UniKeyboard", "Hiragana")},
{0x30A0, 0x30FF, QT_TRANSLATE_NOOP("UniKeyboard", "Katakana")},
{0x3100, 0x312F, QT_TRANSLATE_NOOP("UniKeyboard", "Bopomofo")},
{0x3130, 0x318F, QT_TRANSLATE_NOOP("UniKeyboard", "Hangul Compatibility Jamo")},
{0x3190, 0x319F, QT_TRANSLATE_NOOP("UniKeyboard", "Kanbun")},
{0x31A0, 0x31BF, QT_TRANSLATE_NOOP("UniKeyboard", "Bopomofo Extended")},
{0x3200, 0x32FF, QT_TRANSLATE_NOOP("UniKeyboard", "Enclosed CJK Letters and Months")},
{0x3300, 0x33FF, QT_TRANSLATE_NOOP("UniKeyboard", "CJK Compatibility")},
{0x3400, 0x4DB5, QT_TRANSLATE_NOOP("UniKeyboard", "CJK Unified Ideographs Extension A")},
{0x4E00, 0x9FFF, QT_TRANSLATE_NOOP("UniKeyboard", "CJK Unified Ideographs")},
{0xA000, 0xA48F, QT_TRANSLATE_NOOP("UniKeyboard", "Yi Syllables")},
{0xA490, 0xA4CF, QT_TRANSLATE_NOOP("UniKeyboard", "Yi Radicals")},
{0xAC00, 0xD7A3, QT_TRANSLATE_NOOP("UniKeyboard", "Hangul Syllables")},
{0xD800, 0xDB7F, QT_TRANSLATE_NOOP("UniKeyboard", "High Surrogates")},
{0xDB80, 0xDBFF, QT_TRANSLATE_NOOP("UniKeyboard", "High Private Use Surrogates")},
{0xDC00, 0xDFFF, QT_TRANSLATE_NOOP("UniKeyboard", "Low Surrogates")},
{0xE000, 0xF8FF, QT_TRANSLATE_NOOP("UniKeyboard", "Private Use")},
{0xF900, 0xFAFF, QT_TRANSLATE_NOOP("UniKeyboard", "CJK Compatibility Ideographs")},
{0xFB00, 0xFB4F, QT_TRANSLATE_NOOP("UniKeyboard", "Alphabetic Presentation Forms")},
{0xFB50, 0xFDFF, QT_TRANSLATE_NOOP("UniKeyboard", "Arabic Presentation Forms-A")},
{0xFE20, 0xFE2F, QT_TRANSLATE_NOOP("UniKeyboard", "Combining Half Marks")},
{0xFE30, 0xFE4F, QT_TRANSLATE_NOOP("UniKeyboard", "CJK Compatibility Forms")},
{0xFE50, 0xFE6F, QT_TRANSLATE_NOOP("UniKeyboard", "Small Form Variants")},
{0xFE70, 0xFEFE, QT_TRANSLATE_NOOP("UniKeyboard", "Arabic Presentation Forms-B")},
{0xFF00, 0xFFEF, QT_TRANSLATE_NOOP("UniKeyboard", "Halfwidth and Fullwidth Forms")},
{0xFFF0, 0xFFFD, QT_TRANSLATE_NOOP("UniKeyboard", "Specials")},
{0xFFFF, 0xFFFF, 	0} };


class UScrollView : public QScrollView
{
    Q_OBJECT
public:
    UScrollView(UniSelect *parent);

    uint character() const;
    QString text() const;

    void addSpecial(uint, const QString &);
    void clearSpecials();
public slots:
    void selectSet(int);

signals:
    void selected(uint);
    void selected(const QString &);

protected slots:
    void updateSelectedSet(int x, int y);

protected:
    void keyPressEvent(QKeyEvent *e);
    void setSetForIndex(int ind);

    void drawContents(QPainter *p, int x, int y, int w, int h);
    void drawCell(QPainter *p, const QRect &, const QString &, int);

    void setHighlighted(int);
    void setIndex(int);

    void updateCellForIndex(int ind);

    void contentsMousePressEvent(QMouseEvent *e);
    void contentsMouseMoveEvent(QMouseEvent *e);
    void contentsMouseReleaseEvent(QMouseEvent *e);
    void resizeEvent(QResizeEvent *);
    void fontChange(const QFont &);

    void layoutGlyphs();

    int numGlyphs() const;
private:
    void addNonPrinting();
    void ensureVisible(const QRect &r)
    {
	QScrollView::ensureVisible(r.x(), r.y(), r.width(), r.height());
    }

    QRect bounds( int ) const;
    int index( const QPoint & ) const;

    void coordToIndex(int row, int col, int &ind) const;
    void indexToCoord(int ind, int &srow, int &scol) const;

    void fillMap();

    UniSelect *uniSelect;

    QArray<ushort> mGlyphMap;
    QMap<int, int> mSetMap;

    int glyphSize;
    uchar glyphsPerRow;
    uchar glyphsPerCol;
    int mHighlighted;
    int mCurrent;
    struct SpecialChar {
	uint code;
	QString name;
    };
    QValueList<SpecialChar> mSpecials;
    bool updatingCurrent;
};

UScrollView::UScrollView(UniSelect *parent)
    : QScrollView(parent), uniSelect(parent), mHighlighted(-1), mCurrent(-1),
    updatingCurrent(FALSE)

{
#ifdef QTOPIA_PHONE
    if (!Global::mousePreferred())
	QFrame::setMargin(2);
#endif
    fillMap();
    layoutGlyphs();
    connect(this, SIGNAL(contentsMoving(int, int)), this, SLOT(updateSelectedSet(int, int)));

    setFocusPolicy(StrongFocus);
}

void UScrollView::layoutGlyphs()
{
    // wait till proper resize.

    QFontMetrics fm = font();
    glyphSize = (fm.height()*3)/2;

    if (width() < 1)
	glyphsPerRow = 8;
    else
	glyphsPerRow = QMAX(1, (width() / glyphSize)-1);

    int width = glyphSize * glyphsPerRow;

    glyphsPerCol = 1 + numGlyphs()/glyphsPerRow;

    int height = glyphSize * glyphsPerCol;

    resizeContents(width, height + (mSpecials.count() * glyphSize));
    mHighlighted = -1;
    updateContents(0,0,contentsWidth(),contentsHeight());
}

void UScrollView::setIndex(int ind)
{
    if (ind != mCurrent) {
	if (ind < 0 || ind >= (int)mSpecials.count() + numGlyphs()) {
	    ind = -1;
	}
	int oldindex = mCurrent;
	mCurrent = ind;
	if (mCurrent != -1) {
	    /* need to check map in case need to update combo box */

	    updatingCurrent = TRUE;
	    ensureVisible(bounds(mCurrent));
	    updatingCurrent = FALSE;
	    setSetForIndex(mCurrent);

	    updateCellForIndex(mCurrent);
	    emit selected(character());
	    emit selected(text());
	}
	if (oldindex != -1)
	    updateCellForIndex(oldindex);
    }
}

void UScrollView::keyPressEvent(QKeyEvent *e)
{
#ifdef QTOPIA_PHONE
    if( !Global::mousePreferred() ) {
	if (!isModalEditing()) {
	    if (e->key() == Key_Select) {
		setModalEditing(TRUE);
		updateCellForIndex(mCurrent);
	    } else {
		e->ignore();
	    }
	    return;
	}
    }
#endif
    int srow,scol;
    indexToCoord(mCurrent, srow, scol);
    int row = srow;
    int col = scol;
    switch(e->key()) {
	case Key_Up:
	    if (row > 0)
		row--;
	    break;
	case Key_Down:
	    if (row < glyphsPerCol + (int)mSpecials.count())
		row++;
	    break;
	case Key_Left:
	    if (col > 0)
		col--;
	    break;
	case Key_Right:
	    if (col < glyphsPerRow-1)
		col++;
	    break;
#ifdef QTOPIA_PHONE
	case Key_Space:
	case Key_Select:
	    if( !Global::mousePreferred() ) {
		setModalEditing(FALSE);
		updateCellForIndex(mCurrent);
	    }
	    break;
#endif
	default:
	    e->ignore();
    }
    if (srow != row || scol != col) {
	int ind;
	coordToIndex(row, col, ind);
	if (ind != -1)
	    setIndex(ind);
    }
}

void UScrollView::setHighlighted(int glyphindex)
{
    if (mHighlighted != glyphindex) {
	if (glyphindex < 0 || glyphindex >= numGlyphs()+(int)mSpecials.count())
	    glyphindex = -1;
	if (mHighlighted != -1)