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| ** Copyright (C) 2016 The Qt Company Ltd. |
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| ** This file is part of the QtGui module of the Qt Toolkit. |
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| ****************************************************************************/ |
| |
| #ifndef QPAINTER_P_H |
| #define QPAINTER_P_H |
| |
| // |
| // W A R N I N G |
| // ------------- |
| // |
| // This file is not part of the Qt API. It exists purely as an |
| // implementation detail. This header file may change from version to |
| // version without notice, or even be removed. |
| // |
| // We mean it. |
| // |
| |
| #include <QtCore/qvarlengtharray.h> |
| #include <QtGui/private/qtguiglobal_p.h> |
| #include "QtGui/qbrush.h" |
| #include "QtGui/qcolorspace.h" |
| #include "QtGui/qcolortransform.h" |
| #include "QtGui/qfont.h" |
| #include "QtGui/qpen.h" |
| #include "QtGui/qregion.h" |
| #include "QtGui/qmatrix.h" |
| #include "QtGui/qpainter.h" |
| #include "QtGui/qpainterpath.h" |
| #include "QtGui/qpaintengine.h" |
| |
| #include <private/qpen_p.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| class QPaintEngine; |
| class QEmulationPaintEngine; |
| class QPaintEngineEx; |
| struct QFixedPoint; |
| |
| struct QTLWExtra; |
| |
| struct DataPtrContainer { |
| void *ptr; |
| }; |
| |
| inline const void *data_ptr(const QTransform &t) { return (const DataPtrContainer *) &t; } |
| inline bool qtransform_fast_equals(const QTransform &a, const QTransform &b) { return data_ptr(a) == data_ptr(b); } |
| |
| // QPen inline functions... |
| inline QPen::DataPtr &data_ptr(const QPen &p) { return const_cast<QPen &>(p).data_ptr(); } |
| inline bool qpen_fast_equals(const QPen &a, const QPen &b) { return data_ptr(a) == data_ptr(b); } |
| inline QBrush qpen_brush(const QPen &p) { return data_ptr(p)->brush; } |
| inline qreal qpen_widthf(const QPen &p) { return data_ptr(p)->width; } |
| inline Qt::PenStyle qpen_style(const QPen &p) { return data_ptr(p)->style; } |
| inline Qt::PenCapStyle qpen_capStyle(const QPen &p) { return data_ptr(p)->capStyle; } |
| inline Qt::PenJoinStyle qpen_joinStyle(const QPen &p) { return data_ptr(p)->joinStyle; } |
| |
| // QBrush inline functions... |
| inline QBrush::DataPtr &data_ptr(const QBrush &p) { return const_cast<QBrush &>(p).data_ptr(); } |
| inline bool qbrush_fast_equals(const QBrush &a, const QBrush &b) { return data_ptr(a) == data_ptr(b); } |
| inline Qt::BrushStyle qbrush_style(const QBrush &b) { return data_ptr(b)->style; } |
| inline const QColor &qbrush_color(const QBrush &b) { return data_ptr(b)->color; } |
| inline bool qbrush_has_transform(const QBrush &b) { return data_ptr(b)->transform.type() > QTransform::TxNone; } |
| |
| class QPainterClipInfo |
| { |
| public: |
| QPainterClipInfo() {} // for QVector, don't use |
| enum ClipType { RegionClip, PathClip, RectClip, RectFClip }; |
| |
| QPainterClipInfo(const QPainterPath &p, Qt::ClipOperation op, const QTransform &m) : |
| clipType(PathClip), matrix(m), operation(op), path(p) { } |
| |
| QPainterClipInfo(const QRegion &r, Qt::ClipOperation op, const QTransform &m) : |
| clipType(RegionClip), matrix(m), operation(op), region(r) { } |
| |
| QPainterClipInfo(const QRect &r, Qt::ClipOperation op, const QTransform &m) : |
| clipType(RectClip), matrix(m), operation(op), rect(r) { } |
| |
| QPainterClipInfo(const QRectF &r, Qt::ClipOperation op, const QTransform &m) : |
| clipType(RectFClip), matrix(m), operation(op), rectf(r) { } |
| |
| ClipType clipType; |
| QTransform matrix; |
| Qt::ClipOperation operation; |
| QPainterPath path; |
| QRegion region; |
| QRect rect; |
| QRectF rectf; |
| |
| // ### |
| // union { |
| // QRegionData *d; |
| // QPainterPathPrivate *pathData; |
| |
| // struct { |
| // int x, y, w, h; |
| // } rectData; |
| // struct { |
| // qreal x, y, w, h; |
| // } rectFData; |
| // }; |
| |
| }; |
| |
| Q_DECLARE_TYPEINFO(QPainterClipInfo, Q_MOVABLE_TYPE); |
| |
| class Q_GUI_EXPORT QPainterState : public QPaintEngineState |
| { |
| public: |
| QPainterState(); |
| QPainterState(const QPainterState *s); |
| virtual ~QPainterState(); |
| void init(QPainter *p); |
| |
| QPointF brushOrigin; |
| QFont font; |
| QFont deviceFont; |
| QPen pen; |
| QBrush brush; |
| QBrush bgBrush; // background brush |
| QRegion clipRegion; |
| QPainterPath clipPath; |
| Qt::ClipOperation clipOperation; |
| QPainter::RenderHints renderHints; |
| QVector<QPainterClipInfo> clipInfo; // ### Make me smaller and faster to copy around... |
| QTransform worldMatrix; // World transformation matrix, not window and viewport |
| QTransform matrix; // Complete transformation matrix, |
| QTransform redirectionMatrix; |
| int wx, wy, ww, wh; // window rectangle |
| int vx, vy, vw, vh; // viewport rectangle |
| qreal opacity; |
| |
| uint WxF:1; // World transformation |
| uint VxF:1; // View transformation |
| uint clipEnabled:1; |
| |
| Qt::BGMode bgMode; |
| QPainter *painter; |
| Qt::LayoutDirection layoutDirection; |
| QPainter::CompositionMode composition_mode; |
| uint emulationSpecifier; |
| uint changeFlags; |
| }; |
| |
| struct QPainterDummyState |
| { |
| QFont font; |
| QPen pen; |
| QBrush brush; |
| QTransform transform; |
| }; |
| |
| class QRawFont; |
| class QPainterPrivate |
| { |
| Q_DECLARE_PUBLIC(QPainter) |
| public: |
| QPainterPrivate(QPainter *painter) |
| : q_ptr(painter), d_ptrs(nullptr), state(nullptr), dummyState(nullptr), txinv(0), inDestructor(false), d_ptrs_size(0), |
| refcount(1), device(nullptr), original_device(nullptr), helper_device(nullptr), engine(nullptr), emulationEngine(nullptr), |
| extended(nullptr) |
| { |
| } |
| |
| ~QPainterPrivate(); |
| |
| QPainter *q_ptr; |
| QPainterPrivate **d_ptrs; |
| |
| QPainterState *state; |
| QVarLengthArray<QPainterState *, 8> states; |
| |
| mutable QPainterDummyState *dummyState; |
| |
| QTransform invMatrix; |
| uint txinv:1; |
| uint inDestructor : 1; |
| uint d_ptrs_size; |
| uint refcount; |
| |
| enum DrawOperation { StrokeDraw = 0x1, |
| FillDraw = 0x2, |
| StrokeAndFillDraw = 0x3 |
| }; |
| |
| QPainterDummyState *fakeState() const { |
| if (!dummyState) |
| dummyState = new QPainterDummyState(); |
| return dummyState; |
| } |
| |
| void updateEmulationSpecifier(QPainterState *s); |
| void updateStateImpl(QPainterState *state); |
| void updateState(QPainterState *state); |
| |
| void draw_helper(const QPainterPath &path, DrawOperation operation = StrokeAndFillDraw); |
| void drawStretchedGradient(const QPainterPath &path, DrawOperation operation); |
| void drawOpaqueBackground(const QPainterPath &path, DrawOperation operation); |
| void drawTextItem(const QPointF &p, const QTextItem &_ti, QTextEngine *textEngine); |
| |
| #if !defined(QT_NO_RAWFONT) |
| void drawGlyphs(const quint32 *glyphArray, QFixedPoint *positionArray, int glyphCount, |
| QFontEngine *fontEngine, bool overline = false, bool underline = false, |
| bool strikeOut = false); |
| #endif |
| |
| void updateMatrix(); |
| void updateInvMatrix(); |
| |
| void checkEmulation(); |
| |
| static QPainterPrivate *get(QPainter *painter) |
| { |
| return painter->d_ptr.data(); |
| } |
| |
| QTransform viewTransform() const; |
| qreal effectiveDevicePixelRatio() const; |
| QTransform hidpiScaleTransform() const; |
| static bool attachPainterPrivate(QPainter *q, QPaintDevice *pdev); |
| void detachPainterPrivate(QPainter *q); |
| void initFrom(const QPaintDevice *device); |
| |
| QPaintDevice *device; |
| QPaintDevice *original_device; |
| QPaintDevice *helper_device; |
| QPaintEngine *engine; |
| QEmulationPaintEngine *emulationEngine; |
| QPaintEngineEx *extended; |
| QBrush colorBrush; // for fill with solid color |
| }; |
| |
| Q_GUI_EXPORT void qt_draw_helper(QPainterPrivate *p, const QPainterPath &path, QPainterPrivate::DrawOperation operation); |
| |
| QString qt_generate_brush_key(const QBrush &brush); |
| |
| inline bool qt_pen_is_cosmetic(const QPen &pen, QPainter::RenderHints hints) |
| { |
| return pen.isCosmetic() || (const_cast<QPen &>(pen).data_ptr()->defaultWidth && (hints & QPainter::Qt4CompatiblePainting)); |
| } |
| |
| QT_END_NAMESPACE |
| |
| #endif // QPAINTER_P_H |