qstylesheetstyle.cpp

奇趣公司比较新的qt/emd版本

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#include <qglobal.h>

#ifndef QT_NO_STYLE_STYLESHEET

#include "qstylesheetstyle_p.h"
#include "private/qcssutil_p.h"
#include <qdebug.h>
#include <qapplication.h>
#include <qmenu.h>
#include <qmenubar.h>
#include <qpainter.h>
#include <qstyleoption.h>
#include <qlineedit.h>
#include <qwindowsstyle.h>
#include <qcombobox.h>
#include <qwindowsstyle.h>
#include <qplastiquestyle.h>
#include "private/qcssparser_p.h"
#include "private/qmath_p.h"
#include <qabstractscrollarea.h>
#include "private/qabstractscrollarea_p.h"
#include <qtooltip.h>
#include <qshareddata.h>
#include <qradiobutton.h>
#include <qtoolbutton.h>
#include <qscrollbar.h>
#include <qstring.h>
#include <qfile.h>
#include <qcheckbox.h>
#include <qstatusbar.h>
#include <qheaderview.h>
#include <qprogressbar.h>
#include <private/qwindowsstyle_p.h>
#include <qtabbar.h>
#include <QMetaProperty>
#include <qmainwindow.h>

#include <limits.h>

using namespace QCss;

class QStyleSheetStylePrivate : public QWindowsStylePrivate
{
    Q_DECLARE_PUBLIC(QStyleSheetStyle)
public:
    QStyleSheetStylePrivate() { }
};


static QHash<const QWidget *, QVector<StyleRule> > *styleRulesCache = 0;
typedef QHash<QString, QHash<int, QRenderRule> > QRenderRules;
static QHash<const QWidget *, QRenderRules> *renderRulesCache = 0;
static QHash<const QWidget *, int> *customPaletteWidgets = 0; // widgets whose palette we tampered
static QHash<const void *, StyleSheet> *styleSheetCache = 0; // parsed style sheets
static QSet<const QWidget *> *autoFillDisabledWidgets = 0;

#define ceil(x) ((int)(x) + ((x) > 0 && (x) != (int)(x)))

struct QStyleSheetBorderImageData : public QSharedData
{
    QStyleSheetBorderImageData()
    {
        for (int i = 0; i < 4; i++)
            cuts[i] = -1;
    }
    QPixmap topEdge, bottomEdge, leftEdge, rightEdge, middle;
    QRect topEdgeRect, bottomEdgeRect, leftEdgeRect, rightEdgeRect, middleRect;
    QRect topLeftCorner, topRightCorner, bottomRightCorner, bottomLeftCorner;
    int cuts[4];
    QPixmap pixmap;
    QImage image;
    QCss::TileMode horizStretch, vertStretch;

    void cutBorderImage();
};

struct QStyleSheetBackgroundData : public QSharedData
{
    QStyleSheetBackgroundData(const QBrush& b, const QPixmap& p, QCss::Repeat r,
                              Qt::Alignment a, QCss::Origin o, Attachment t, QCss::Origin c)
        : brush(b), pixmap(p), repeat(r), position(a), origin(o), attachment(t), clip(c) { }

    bool isTransparent() const {
        if (brush.style() != Qt::NoBrush)
            return !brush.isOpaque();
        return pixmap.isNull() ? false : pixmap.hasAlpha();
    }
    QBrush brush;
    QPixmap pixmap;
    QCss::Repeat repeat;
    Qt::Alignment position;
    QCss::Origin origin;
    QCss::Attachment attachment;
    QCss::Origin clip;
};

struct QStyleSheetBorderData : public QSharedData
{
    QStyleSheetBorderData() : bi(0)
    {
        for (int i = 0; i < 4; i++) {
            borders[i] = 0;
            styles[i] = QCss::BorderStyle_None;
        }
    }

    QStyleSheetBorderData(int *b, QBrush *c, QCss::BorderStyle *s, QSize *r) : bi(0)
    {
        for (int i = 0; i < 4; i++) {
            borders[i] = b[i];
            styles[i] = s[i];
            colors[i] = c[i];
            radii[i] = r[i];
        }
    }

    int borders[4];
    QBrush colors[4];
    QCss::BorderStyle styles[4];
    QSize radii[4]; // topleft, topright, bottomleft, bottomright

    const QStyleSheetBorderImageData *borderImage() const
    { return bi; }
    bool hasBorderImage() const { return bi!=0; }

    QSharedDataPointer<QStyleSheetBorderImageData> bi;
};

struct QStyleSheetBoxData : public QSharedData
{
    QStyleSheetBoxData(int *m, int *p, int s) : spacing(s)
    {
        for (int i = 0; i < 4; i++) {
            margins[i] = m[i];
            paddings[i] = p[i];
        }
    }

    int margins[4];
    int paddings[4];

    int spacing;
};

struct QStyleSheetPaletteData : public QSharedData
{
    QStyleSheetPaletteData(const QBrush &fg, const QBrush &sfg, const QBrush &sbg,
                           const QBrush &abg)
        : foreground(fg), selectionForeground(sfg), selectionBackground(sbg),
          alternateBackground(abg) { }

    QBrush foreground;
    QBrush selectionForeground;
    QBrush selectionBackground;
    QBrush alternateBackground;
};

struct QStyleSheetGeometryData : public QSharedData
{
    QStyleSheetGeometryData(int w, int h, int minw, int minh, int maxw, int maxh)
        : minWidth(minw), minHeight(minh), width(w), height(h), maxWidth(maxw), maxHeight(maxh) { }

    int minWidth, minHeight, width, height, maxWidth, maxHeight;
};

struct QStyleSheetPositionData : public QSharedData
{
    QStyleSheetPositionData(int l, int t, int r, int b, Origin o, Qt::Alignment p, QCss::PositionMode m, Qt::Alignment a = 0)
        : left(l), top(t), bottom(b), right(r), origin(o), position(p), mode(m), textAlignment(a) { }

    int left, top, bottom, right;
    Origin origin;
    Qt::Alignment position;
    QCss::PositionMode mode;
    Qt::Alignment textAlignment;
};

struct QStyleSheetImageData : public QSharedData
{
    QStyleSheetImageData(const QIcon &i, Qt::Alignment a, const QSize &sz)
        : icon(i), alignment(a), size(sz) { }

    QIcon icon;
    Qt::Alignment alignment;
    QSize size;
};

class QRenderRule
{
public:
    QRenderRule() : features(0), hasFont(false), pal(0), b(0), bg(0), bd(0), geo(0), p(0), img(0), clipset(0) { }
    QRenderRule(const QVector<QCss::Declaration> &, const QWidget *);
    ~QRenderRule() { }

    QRect borderRect(const QRect &r) const;
    QRect paddingRect(const QRect &r) const;
    QRect contentsRect(const QRect &r) const;

    enum { Margin = 1, Border = 2, Padding = 4, All=Margin|Border|Padding };
    QRect boxRect(const QRect &r, int flags = All) const;
    QSize boxSize(const QSize &s, int flags = All) const;
    QRect originRect(const QRect &rect, Origin origin) const;

    bool paintsOver(Edge e1, Edge e2);
    QPainterPath borderClip(QRect rect);
    void drawBorder(QPainter *, const QRect&);
    void drawBorderImage(QPainter *, const QRect&);
    void drawBackground(QPainter *, const QRect&, const QPoint& = QPoint(0, 0));
    void drawBackgroundImage(QPainter *, const QRect&, QPoint = QPoint(0, 0));
    void drawFrame(QPainter *, const QRect&);
    void drawImage(QPainter *p, const QRect &rect);
    void drawRule(QPainter *, const QRect&);
    void configurePalette(QPalette *, QPalette::ColorGroup, const QWidget *, bool);
    void configurePalette(QPalette *p, QPalette::ColorRole fr, QPalette::ColorRole br);

    void getRadii(const QRect &br, QSize *tlr, QSize *trr, QSize *blr, QSize *brr) const;

    const QStyleSheetPaletteData *palette() const { return pal; }
    const QStyleSheetBoxData *box() const { return b; }
    const QStyleSheetBackgroundData *background() const { return bg; }
    const QStyleSheetBorderData *border() const { return bd; }
    const QStyleSheetGeometryData *geometry() const { return geo; }
    const QStyleSheetPositionData *position() const { return p; }

    bool hasPalette() const { return pal != 0; }
    bool hasBackground() const { return bg != 0; }
    bool hasGradientBackground() const { return bg && bg->brush.style() >= Qt::LinearGradientPattern
                                                   && bg->brush.style() <= Qt::ConicalGradientPattern; }

    bool hasNativeBorder() const {
        return bd == 0
               || (!bd->hasBorderImage() && bd->styles[0] == BorderStyle_Native);
    }

    bool nativeBorder() const {
        return (bd == 0
                || (!bd->hasBorderImage() && bd->styles[0] == BorderStyle_Native));
    }

    bool baseStyleCanDraw() const {
        if (!hasBackground() || background()->brush.style() == Qt::NoBrush)
            return true;
        if (hasGradientBackground())
            return features & StyleFeature_BackgroundGradient;
        return features & StyleFeature_BackgroundColor;
    }

    bool hasBox() const { return b != 0; }
    bool hasBorder() const { return bd != 0; }
    bool hasPosition() const { return p != 0; }
    bool hasGeometry() const { return geo != 0; }
    bool hasDrawable() const { return hasBorder() || hasBackground() || hasImage(); }
    bool hasImage() const { return img != 0; }

    QSize minimumContentsSize() const
    { return geo ? QSize(geo->minWidth, geo->minHeight) : QSize(0, 0); }
    QSize minimumSize() const
    { return boxSize(minimumContentsSize()); }

    QSize contentsSize() const
    { return geo ? QSize(geo->width, geo->height)
                 : ((img && img->size.isValid()) ? img->size : QSize()); }
    QSize contentsSize(const QSize &sz) const
    {
        QSize csz = contentsSize();
        if (csz.width() == -1) csz.setWidth(sz.width());
        if (csz.height() == -1) csz.setHeight(sz.height());
        return csz;
    }
    bool hasContentsSize() const
    { return (geo && (geo->width != -1 || geo->height != -1)) || (img && img->size.isValid()); }

    QSize size() const { return boxSize(contentsSize()); }
    QSize size(const QSize &sz) const { return boxSize(contentsSize(sz)); }

    int features;
    QBrush defaultBackground;
    QFont font;
    bool hasFont;

    QHash<QString, int> styleHints;
    bool hasStyleHint(const QString& sh) const { return styleHints.contains(sh); }
    int styleHint(const QString& sh) const { return styleHints.value(sh); }

    void fixupBorder(int);

    QSharedDataPointer<QStyleSheetPaletteData> pal;
    QSharedDataPointer<QStyleSheetBoxData> b;
    QSharedDataPointer<QStyleSheetBackgroundData> bg;
    QSharedDataPointer<QStyleSheetBorderData> bd;
    QSharedDataPointer<QStyleSheetGeometryData> geo;
    QSharedDataPointer<QStyleSheetPositionData> p;
    QSharedDataPointer<QStyleSheetImageData> img;

    // Shouldn't be here
    void setClip(QPainter *p, const QRect &rect);
    void unsetClip(QPainter *);
    int clipset;
    QPainterPath clipPath;
};

///////////////////////////////////////////////////////////////////////////////////////////
static const char *knownStyleHints[] = {
    "activate-on-singleclick",
    "alignment",
    "button-layout",
    "combobox-list-mousetracking",
    "combobox-popup",
    "dither-disable-text",
    "etch-disabled-text",
    "gridline-color",