144 lines
3.4 KiB
C++
144 lines
3.4 KiB
C++
/***************************************************************************
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CDrawingArea.h
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(c) 2000-2017 Benoît Minisini <benoit.minisini@gambas-basic.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA.
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***************************************************************************/
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#ifndef __CDRAWINGAREA_H
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#define __CDRAWINGAREA_H
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#include <QPaintEvent>
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#include <QPixmap>
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#include <QEvent>
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//#include <QFrame>
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#include "gambas.h"
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#include "CWidget.h"
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#include "CContainer.h"
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#ifndef __CDRAWINGAREA_CPP
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extern GB_DESC CDrawingAreaDesc[];
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#else
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#define THIS ((CDRAWINGAREA *)_object)
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#define WIDGET ((MyDrawingArea *)((CWIDGET *)_object)->widget)
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#endif
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typedef
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struct {
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CWIDGET widget;
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QWidget *container;
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CARRANGEMENT arrangement;
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}
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CDRAWINGAREA;
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class MyDrawingArea : public MyContainer
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{
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Q_OBJECT
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friend class MyScrollArea;
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public:
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explicit MyDrawingArea(QWidget *parent);
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~MyDrawingArea();
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int drawn;
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QPixmap *cache;
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virtual void setVisible(bool visible);
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//void setTransparent(bool);
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//bool isTransparent(void) { return transparent; }
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void updateCache();
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void setCached(bool);
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bool isCached() const { return _cached; }
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void clearBackground();
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#ifndef QT5
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Qt::HANDLE background() const { return _background; }
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#endif
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void refreshBackground();
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void updateBackground();
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void setFrozen(bool f);
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bool isFrozen() const { return _frozen; }
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void redraw(QRect &r, bool frame = false);
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bool hasNoBackground() const { return _no_background; }
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void setNoBackground(bool on);
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void updateNoBackground();
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void setDrawEvent(int event) { _draw_event = event; }
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bool inDrawEvent() const { return _in_draw_event; }
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static bool inAnyDrawEvent() { return _in_any_draw_event > 0; }
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void createBackground(int w, int h);
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#ifndef QT5
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bool hasCacheBackground() const { return _cached && _background; }
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#else
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bool hasCacheBackground() const { return _cached && !_background_pixmap.isNull(); }
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#endif
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void deleteBackground();
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QPixmap *getBackgroundPixmap();
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public slots:
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void setBackground();
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//bool isTransparent() { return _transparent; }
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//void setTransparent(bool on);
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protected:
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virtual void setStaticContents(bool on);
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virtual void resizeEvent(QResizeEvent *);
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virtual void paintEvent(QPaintEvent *);
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virtual void hideEvent(QHideEvent *);
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//virtual void drawContents(QPainter *p);
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virtual void setPalette(const QPalette &);
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virtual void changeEvent(QEvent *);
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private:
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QPixmap _background_pixmap;
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#ifndef QT5
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Qt::HANDLE _background;
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#endif
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int _background_w, _background_h;
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unsigned _frozen : 1;
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unsigned _merge : 1;
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unsigned _focus : 1;
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unsigned _set_background : 1;
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unsigned _cached : 1;
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unsigned _no_background : 1;
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unsigned _in_draw_event : 1;
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int _event_mask;
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int _draw_event;
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static int _in_any_draw_event;
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};
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void CDRAWINGAREA_send_change_event(void);
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#endif
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