paysages3d/gui_qt/basepreview.h

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#ifndef _PAYSAGES_QT_BASEPREVIEW_H_
#define _PAYSAGES_QT_BASEPREVIEW_H_
#include <QMutex>
#include <QImage>
#include <QWidget>
#include <QThread>
#include <QVector>
#include <QList>
class BasePreview : public QWidget {
Q_OBJECT
public:
BasePreview(QWidget* parent);
~BasePreview();
static void initDrawers();
static void stopDrawers();
static void reviveAll();
void redraw();
QImage startChunkTransaction(int x, int y, int w, int h, int* revision);
void commitChunkTransaction(QImage* chunk, int x, int y, int w, int h, int revision);
QColor getPixelColor(int x, int y);
protected:
virtual void updateData();
virtual QColor getColor(double x, double y);
void configScaling(double min, double max, double step, double init, bool logarithmic = true);
void configScrolling(double xmin, double xmax, double xinit, double ymin, double ymax, double yinit);
double xoffset;
double yoffset;
double scaling;
private:
void updateScaling();
void updateChunks();
void invalidatePixbuf(int value);
void showEvent(QShowEvent* event);
void resizeEvent(QResizeEvent* event);
void paintEvent(QPaintEvent* event);
void mousePressEvent(QMouseEvent* event);
void mouseMoveEvent(QMouseEvent* event);
void wheelEvent(QWheelEvent* event);
QMutex* lock_drawing;
QImage* pixbuf;
int _width;
int _height;
int _revision;
int mousex;
int mousey;
double scalingbase;
bool alive;
double conf_scroll_xmin;
double conf_scroll_xmax;
double conf_scroll_xinit;
double conf_scroll_ymin;
double conf_scroll_ymax;
double conf_scroll_yinit;
double conf_scale_min;
double conf_scale_max;
double conf_scale_init;
double conf_scale_step;
bool conf_scroll_logarithmic;
signals:
void contentChange();
void redrawRequested();
private slots:
void handleRedraw();
};
/*** Private section ***/
class PreviewChunk;
class PreviewDrawingThread : public QThread {
public:
PreviewDrawingThread();
void askStop();
static inline void usleep(int us) {
QThread::usleep(us);
}
protected:
void run();
private:
bool _running;
};
class PreviewDrawingManager {
public:
PreviewDrawingManager();
void startThreads();
void stopThreads();
void addChunk(PreviewChunk* chunk);
void removeChunks(BasePreview* preview);
void updateChunks(BasePreview* preview);
void updateAllChunks();
void performOneThreadJob();
private:
int _thread_count;
QVector<PreviewDrawingThread*> _threads;
QVector<PreviewChunk*> _chunks;
QList<PreviewChunk*> _updateQueue;
QMutex _lock;
};
#endif