File indexing completed on 2024-05-12 15:58:15

 /*
  *  SPDX-FileCopyrightText: 2004 Adrian Page <adrian@pagenet.plus.com>
  *  SPDX-FileCopyrightText: 2004 Bart Coppens <kde@bartcoppens.be>
  *
  *  SPDX-License-Identifier: GPL-2.0-or-later
  */
 #ifndef KIS_FILL_PAINTER_H_
 #define KIS_FILL_PAINTER_H_
 
 #include <QRect>
 
 #include <KoColor.h>
 #include <KoColorSpaceRegistry.h>
 #include <KoPattern.h>
 
 #include "kis_painter.h"
 #include "kis_types.h"
 #include "kis_selection.h"
 
 #include <kritaimage_export.h>
 
 
 class KisFilterConfiguration;
 
 // XXX: Filling should set dirty rect.
 /**
  * This painter can be used to fill paint devices in different ways. This can also be used
  * for flood filling related operations.
  */
 class KRITAIMAGE_EXPORT KisFillPainter : public KisPainter
 {
 
 public:
 
     /**
      * Construct an empty painter. Use the begin(KisPaintDeviceSP) method to attach
      * to a paint device
      */
     KisFillPainter();
     /**
      * Start painting on the specified paint device
      */
     KisFillPainter(KisPaintDeviceSP device);
 
     KisFillPainter(KisPaintDeviceSP device, KisSelectionSP selection);
 
 private:
 
     void initFillPainter();
 
 public:
     /**
      * Fill current selection of KisPainter with a specified \p color.
      *
      * The filling rect is limited by \p rc to allow multithreaded
      * filling/processing.
      */
     void fillSelection(const QRect &rc, const KoColor &color);
 
     /**
      * Fill a rectangle with a certain color and opacity.
      */
     void fillRect(qint32 x,
                   qint32 y,
                   qint32 w,
                   qint32 h,
                   const KoColor &c,
                   quint8 opacity);
 
     /**
      * Overloaded version of the above function.
      */
     inline void fillRect(const QRect &rc, const KoColor &c, quint8 opacity)
     {
         fillRect(rc.x(), rc.y(), rc.width(), rc.height(), c, opacity);
     }
 
     /**
      * Fill a rectangle with a certain color.
      */
     inline void
     fillRect(qint32 x, qint32 y, qint32 w, qint32 h, const KoColor &c)
     {
         fillRect(x, y, w, h, c, OPACITY_OPAQUE_U8);
     }
 
     /**
      * Overloaded version of the above function.
      */
     inline void fillRect(const QRect &rc, const KoColor &c)
     {
         fillRect(rc.x(), rc.y(), rc.width(), rc.height(), c, OPACITY_OPAQUE_U8);
     }
 
     /**
      * Fill a rectangle with a certain pattern. The pattern is repeated if it does not fit the
      * entire rectangle.
      */
     void fillRect(qint32 x1, qint32 y1, qint32 w, qint32 h, const KoPatternSP pattern, const QPoint &offset = QPoint());
 
     /**
      * Fill a rectangle with a certain pattern. The pattern is repeated if it does not fit the
      * entire rectangle.
      *
      * This one uses blitting and thus makes use of proper composition.
      */
     void fillRect(qint32 x1, qint32 y1, qint32 w, qint32 h, const KisPaintDeviceSP device, const QRect& deviceRect);
 
     /**
      * Overloaded version of the above function.
      */
     void fillRect(const QRect &rc, const KisPaintDeviceSP device, const QRect &deviceRect);
 
     /**
      * Overloaded version of the above function.
      */
     void fillRect(const QRect& rc, const KoPatternSP pattern, const QPoint &offset = QPoint());
 
     /**
      * Fill a rectangle with black transparent pixels (0, 0, 0, 0 for RGBA).
      */
     inline void eraseRect(qint32 x1, qint32 y1, qint32 w, qint32 h)
     {
         const KoColorSpace *cs = KoColorSpaceRegistry::instance()->rgb8();
         KoColor c(Qt::black, cs);
         fillRect(x1, y1, w, h, c, OPACITY_TRANSPARENT_U8);
     }
 
     /**
      * Overloaded version of the above function.
      */
     inline void eraseRect(const QRect &rc)
     {
         const KoColorSpace *cs = KoColorSpaceRegistry::instance()->rgb8();
         KoColor c(Qt::black, cs);
         fillRect(rc.x(),
                  rc.y(),
                  rc.width(),
                  rc.height(),
                  c,
                  OPACITY_TRANSPARENT_U8);
     }
 
     /**
      * @brief fillRect
      * Fill a rectangle with a certain pattern. The pattern is repeated if it does not fit the
      * entire rectangle. Differs from other functions that it uses a transform, does not support
      * composite ops in turn.
      * @param rc rectangle to fill.
      * @param pattern pattern to use.
      * @param transform transformation to apply to the pattern.
      */
     void fillRectNoCompose(const QRect& rc, const KoPatternSP pattern, const QTransform transform);
 
     /**
      * Fill a rectangle with a certain pattern. The pattern is repeated if it does not fit the
      * entire rectangle.
      *
      * This one supports transforms, but does not use blitting.
      */
     void fillRectNoCompose(qint32 x1, qint32 y1, qint32 w, qint32 h, const KisPaintDeviceSP device, const QRect& deviceRect, const QTransform transform);
 
     /**
      * Fill the specified area with the output of the generator plugin that is configured
      * in the generator parameter
      */
     void fillRect(qint32 x1, qint32 y1, qint32 w, qint32 h, const KisFilterConfigurationSP  generator);
 
     /**
      * Fills the enclosed area around the point with the set color. If
      * there is a selection, the whole selection is filled. Note that
      * you must have set the width and height on the painter if you
      * don't have a selection.
      *
      * @param startX the X position where the floodfill starts
      * @param startY the Y position where the floodfill starts
      * @param sourceDevice the sourceDevice that determines the area that
      * is floodfilled if sampleMerged is on
      */
     void fillColor(int startX, int startY, KisPaintDeviceSP sourceDevice);
 
     /**
      * Fills the enclosed area around the point with the set pattern.
      * If there is a selection, the whole selection is filled. Note
      * that you must have set the width and height on the painter if
      * you don't have a selection.
      *
      * @param startX the X position where the floodfill starts
      * @param startY the Y position where the floodfill starts
      * @param sourceDevice the sourceDevice that determines the area that
      * is floodfilled if sampleMerged is on
      * @param patternTransform transform applied to the pattern;
      */
     void fillPattern(int startX, int startY, KisPaintDeviceSP sourceDevice, QTransform patternTransform = QTransform());
 
     /**
      * Returns a selection mask for the floodfill starting at the specified position.
      * This variant basically creates a new selection object and passes it down
      *   to the other variant of the function.
      *
      * @param startX the X position where the floodfill starts
      * @param startY the Y position where the floodfill starts
      * @param sourceDevice the sourceDevice that determines the area that
      * is floodfilled if sampleMerged is on
      */
     KisPixelSelectionSP createFloodSelection(int startX, int startY,
                                              KisPaintDeviceSP sourceDevice, KisPaintDeviceSP existingSelection);
 
     /**
      * Returns a selection mask for the floodfill starting at the specified position.
      * This variant requires an empty selection object. It is used in cases where the pointer
      *    to the selection must be known beforehand, for example when the selection is filled
      *    in a stroke and then the pointer to the pixel selection is needed later.
      *
      * @param selection empty new selection object
      * @param startX the X position where the floodfill starts
      * @param startY the Y position where the floodfill starts
      * @param sourceDevice the sourceDevice that determines the area that
      * is floodfilled if sampleMerged is on
      */
     KisPixelSelectionSP createFloodSelection(KisPixelSelectionSP newSelection, int startX, int startY,
                                              KisPaintDeviceSP sourceDevice, KisPaintDeviceSP existingSelection);
 
     /**
      * Set the threshold for floodfill. The range is 0-255: 0 means the fill will only
      * fill parts that are the exact same color, 255 means anything will be filled
      */
     inline void setFillThreshold(int threshold)
     {
         m_threshold = threshold;
     }
 
     /** Returns the fill threshold, see setFillThreshold for details */
     int fillThreshold() const {
         return m_threshold;
     }
 
     /**
      * Set the opacity spread for floodfill. The range is 0-100: 0% means that
      * the fully opaque area only encompasses the pixels exactly equal to the
      * seed point with the other pixels of the selected region being
      * semi-transparent (depending on how similar they are to the seed pixel)
      * up to the region boundary (given by the threshold value). 100 means that
      * the fully opaque area will encompass all the pixels of the selected
      * region up to the contour. Any value inbetween will make the fully opaque
      * portion of the region vary in size, with semi-transparent pixels
      * inbetween it and  the region boundary
      */
     void setOpacitySpread(int opacitySpread)
     {
         m_opacitySpread = opacitySpread;
     }
 
     /** Returns the fill opacity spread, see setOpacitySpread for details */
     int opacitySpread() const {
         return m_opacitySpread;
     }
 
     bool useCompositioning() const {
         return m_useCompositioning;
     }
 
     void setUseCompositioning(bool useCompositioning) {
         m_useCompositioning = useCompositioning;
     }
 
     /** Sets the width of the paint device */
     void setWidth(int w) {
         m_width = w;
     }
 
     /** Sets the height of the paint device */
     void setHeight(int h) {
         m_height = h;
     }
 
     /** If true, floodfill doesn't fill outside the selected area of a layer */
     bool careForSelection() const {
         return m_careForSelection;
     }
 
     /** Set caring for selection. See careForSelection for details */
     void setCareForSelection(bool set) {
         m_careForSelection = set;
     }
 
     /** Sets if antiAlias should be applied to the selection */
     void setAntiAlias(bool antiAlias) {
         m_antiAlias = antiAlias;
     }
     
     /** Get if antiAlias should be applied to the selection */
     bool antiAlias() const {
         return m_antiAlias;
     }
 
     /** Sets the auto growth/shrinking radius */
     void setSizemod(int sizemod) {
         m_sizemod = sizemod;
     }
     
     /** Sets how much to auto-grow or shrink (if @p sizemod is negative) the selection
     flood before painting, this affects every fill operation except fillRect */
     int sizemod() const {
         return m_sizemod;
     }
     
     /** Sets feathering radius */
     void setFeather(int feather) {
         m_feather = feather;
     }
     
     /** defines the feathering radius for selection flood operations, this affects every
     fill operation except fillRect */
     uint feather() const {
         return m_feather;
     }
 
     /** Sets selection borders being treated as boundary */
     void setUseSelectionAsBoundary(bool useSelectionAsBoundary) {
         m_useSelectionAsBoundary = useSelectionAsBoundary;
     }
 
     /** defines if the selection borders are treated as boundary in flood fill or not */
     uint useSelectionAsBoundary() const {
         return m_useSelectionAsBoundary;
     }
 
 protected:
     void setCurrentFillSelection(KisSelectionSP fillSelection)
     {
         m_fillSelection = fillSelection;
     }
 
     KisSelectionSP currentFillSelection() const
     {
         return m_fillSelection;
     }
 
     // for floodfill
     void genericFillStart(int startX, int startY, KisPaintDeviceSP sourceDevice);
     void genericFillEnd(KisPaintDeviceSP filled);
 
 private:
     KisSelectionSP m_fillSelection;
 
     int m_feather;
     int m_sizemod;
     bool m_antiAlias;
     int m_threshold;
     int m_opacitySpread;
     int m_width, m_height;
     QRect m_rect;
     bool m_careForSelection;
     bool m_useCompositioning;
     bool m_useSelectionAsBoundary;
 };
 
 #endif //KIS_FILL_PAINTER_H_