root/deus/GraphDisplay.h

/*      
 *      GraphDisplay.h
 *
 *      Header for zone display pane
 */
#pragma warning(disable: 4786)
#pragma once

#include <qwidget.h>
#include <qpainter.h>
#include <qpixmap.h>

#include <set>
using std::set;

const int DEFAULT_ZOOM = 0;
const double FACTOR_MIN = .01;


class GraphDisplay : public QWidget
{
        Q_OBJECT
public:
        GraphDisplay(QWidget *parent=0, const char *name=0);
        ~GraphDisplay() {delete buffer;}

        QSizePolicy sizePolicy() const;
        QPixmap *buffer;

        bool modified;
        bool suppress_repaint;                  // for use during save()

        int zoom;                                               // zoom (0-99 => 100%->FACTOR_MIN)
        float factor;
        int cx, cy, oldcx, oldcy;               // center x, y
        int minx, miny, maxx, maxy;             // bounding box



public slots:
        void setZoom(int zoom);    
        void repaint(int x, int y, int w, int h, bool clear);
        void repaint();
        void center();          // centers drawing pane
        void fit();                     // fits entire zone to window
        
signals:
        void zoomChanged(int);

protected:
        inline int z(int i) {return int(i * factor);}
        inline int z(double i) {return int(i * factor);}
        inline int dez(int i) {return int(i * (1/factor));}
        inline int dez(double i) {return int(i * (1/factor));}
        inline int tx(int i) {return dez(i - (width()/2) - z(cx));}
        inline int ty(int i) {return dez(i - (height()/2) - z(cy));}

        virtual void boundingBox() = 0;                 // calculate bounding box
        void fit(int width, int height);
        virtual void draw(QPaintDevice *surface, int width, int height) = 0;

        void paintEvent(QPaintEvent *);
        void resizeEvent(QResizeEvent *);

        int clickx, clicky, oldx, oldy;
        bool moving_icon, moving_pane;
        class GraphIcon *moving;

        bool fit_pending;
};


// Plan specific graph display
class PlanGraphDisplay : public GraphDisplay
{
        Q_OBJECT
public:
        PlanGraphDisplay(class PlanNode *root, QWidget *parent=0, const char *name=0);

        class PlanNode *root; 

protected:
        virtual void draw(QPaintDevice *surface, int width, int height);
        void draw_recursive(QPainter &p, class PlanNode *n);

        virtual void boundingBox();

        set<PlanNode *> node_set;               // Useful for bookkeeping
};


// Author specific graph display
class AuthorGraphDisplay : public GraphDisplay
{
        Q_OBJECT
public:
        AuthorGraphDisplay(class AuthorForm_impl *author, QWidget *parent=0, const char *name=0);

        class AuthorForm_impl *author; 

        class GraphIcon* intersect(int x, int y);

protected:
        virtual void draw(QPaintDevice *surface, int width, int height);
        void draw_recursive(QPainter &p, class AuthorNode *n);

        void mousePressEvent(QMouseEvent *);
        void mouseDoubleClickEvent(QMouseEvent *);
        void mouseMoveEvent(QMouseEvent *);
        void mouseReleaseEvent(QMouseEvent *);

        virtual void boundingBox();
};