kis_preset_live_preview_view.h

Go to the documentation of this file.

/*
  *  SPDX-FileCopyrightText: 2017 Scott Petrovic <scottpetrovic@gmail.com>
  *
  *  SPDX-License-Identifier: GPL-2.0-or-later
  */
 
#ifndef _KIS_PRESET_LIVE_PREVIEW_
#define _KIS_PRESET_LIVE_PREVIEW_
 
#include <QGraphicsScene>
#include <QGraphicsView>
#include <QPainterPath>
#include <QGraphicsPixmapItem>
 
#include "kis_paintop_preset.h"
#include "KoColorSpaceRegistry.h"
#include "kis_paint_layer.h"
#include "kis_painter.h"
#include "kis_distance_information.h"
#include "kis_painting_information_builder.h"
#include <kis_image.h>
#include <kis_types.h>
#include <KoColor.h>
#include "kis_signal_compressor.h"
 
class KoCanvasResourceProvider;
 
class KisPresetLivePreviewView : public QGraphicsView
{
    Q_OBJECT
 
 
public:
 
    KisPresetLivePreviewView(QWidget *parent);
    ~KisPresetLivePreviewView();
 
    void setup(KoCanvasResourceProvider* resourceManager);
 
    void setCurrentPreset(KisPaintOpPresetSP preset);
    void requestUpdateStroke();
 
private Q_SLOTS:
    void updateStroke();
    void slotPreviewGenerationCompleted();
 
private:
 
    KoCanvasResourceProvider* m_resourceManager {nullptr};
 
    KisImageSP m_image;
 
    KisLayerSP m_layer;
 
    const KoColorSpace *m_colorSpace {nullptr};
 
    KoColor m_paintColor;
 
    QGraphicsScene *m_brushPreviewScene {nullptr};
 
    QGraphicsPixmapItem *m_sceneImageItem {nullptr};
 
    QGraphicsTextItem *m_noPreviewText {nullptr};
 
    QRect m_canvasSize;
 
    QPointF m_canvasCenterPoint;
 
    KisDistanceInformation m_currentDistance;
    QPainterPath m_curvedLine;
    KisPaintInformation m_curvePointPI1;
    KisPaintInformation m_curvePointPI2;
 
    KisPaintOpPresetSP m_currentPreset;
 
    float m_currentBrushSize {1.0};
 
    bool m_previewGenerationInProgress {false};
    KisSignalCompressor m_updateCompressor;
 
    const float m_minBrushVal {10.0};
    const float m_maxBrushVal {100.0};
 
    const qreal m_minScale {1.0};
    const qreal m_maxScale {0.3};
 
    const float m_minStrokeScale {0.4}; // for smaller brush stroke
    const float m_maxStrokeScale {1.0}; // for larger brush stroke
 
 
    void paintBackground();
 
    void setupAndPaintStroke();
 
    void changeEvent(QEvent*) override;
};
 
#endif