Mercurial > octave
view libgui/graphics/Canvas.h @ 27303:07b330708e3c
use Qt signals for interpreter callbacks in Qt graphics toolkit
* Backend.h, Backend.cc (Backend::m_interpreter): New data member.
(Backend::createObject): Pass pointer to invoking Backend object in
signal argument list.
(Backend::interpreter_event): New slots. Access interpreter
event_manager to post interpreter callbacks events here.
* ObjectFactory.h, ObjectFactory.cc (ObjectFactory::createObject): New
arg, backend. Connect interpreter_event signal from newly created
object to interpreter_event slot in backend object.
* __init_qt__.cc (__init__): Pass interpreter to Backend constructor.
* module.mk (OCTAVE_GUI_GRAPHICS_MOC): New files, moc-Canvas.cc and
moc-Container.cc.
* Object.h (Object::interpreter_event): New signals.
* Canvas.h, Canvas.cc (Canvas::interprter_event): New signals.
(Canvas::canvasMouseReleaseEvent): Emit interpreter_event signal
instead of accessing interpreter event_manager object directly here.
* GLCanvas.cc (GLCanvas::do_print): Emit interpreter_event signal
instead of accessing interpreter event_manager object directly here.
* Container.h, Container.cc (Container::interpreter_event):
New signals.
(Container::canvas): Forward Canvas interpreter_event signals to
Container interpreter_event signals.
* ButtonGroup.cc (ButtonGroup::ButtonGroup) Forward Container
interpreter_event signals to the ButtonGroup interpreter_event
signal. Since ButtonGroup is derived from Object, this connection and
the one made by ObjectFactory::createObject has the effect of passing
the interpreter_event signal up to the Backend interpreter_event slot.
* Figure.cc (Figure::Figure): Likewise, for Figure.
* Panel.cc (Panel::Panel): Likewise, for Panel.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Mon, 29 Jul 2019 10:43:20 -0400 |
parents | 9e5a825bb966 |
children | 6b2d20317b26 |
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/* Copyright (C) 2011-2019 Michael Goffioul This file is part of Octave. Octave is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. Octave is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with Octave; see the file COPYING. If not, see <https://www.gnu.org/licenses/>. */ #if ! defined (octave_Canvas_h) #define octave_Canvas_h 1 #include <QObject> #include <QPoint> #include "event-manager.h" #include "graphics.h" #include "Figure.h" class QKeyEvent; class QMouseEvent; class QWheelEvent; class QWidget; class octave_value_list; namespace QtHandles { class Canvas : public QObject { Q_OBJECT public: enum EventMask { KeyPress = 0x01, KeyRelease = 0x02 }; public: virtual ~Canvas (void) = default; void redraw (bool sync = false); void blockRedraw (bool block = true); void print (const QString& file_cmd, const QString& term) { do_print (file_cmd, term, m_handle); } void addEventMask (int m) { m_eventMask |= m; } void clearEventMask (int m) { m_eventMask &= (~m); } void setEventMask (int m) { m_eventMask = m; } void setCursor (MouseMode mode, std::string fallback, QImage cdata, Matrix hotspot); virtual QWidget * qWidget (void) = 0; static Canvas * create (const std::string& name, QWidget *parent, const graphics_handle& handle); virtual uint8NDArray getPixels (void) { return do_getPixels (m_handle); }; signals: void interpreter_event (const octave::fcn_callback& fcn); void interpreter_event (const octave::meth_callback& meth); protected: virtual void draw (const graphics_handle& handle) = 0; virtual void drawZoomBox (const QPoint& p1, const QPoint& p2) = 0; virtual void resize (int x, int y, int width, int height) = 0; virtual graphics_object selectFromAxes (const graphics_object& ax, const QPoint& pt) = 0; virtual uint8NDArray do_getPixels (const graphics_handle& handle) = 0; virtual void do_print (const QString& file_cmd, const QString& term, const graphics_handle& handle) = 0; protected: Canvas (const graphics_handle& handle) : m_handle (handle), m_redrawBlocked (false), m_mouseMode (NoMode), m_clickMode (false), m_eventMask (0), m_rectMode (false) { } void canvasToggleAxes (const graphics_handle& handle); void canvasToggleGrid (const graphics_handle& handle); void canvasAutoAxes (const graphics_handle& handle); void canvasPaintEvent (void); void canvasMouseDoubleClickEvent (QMouseEvent *event); void canvasMouseMoveEvent (QMouseEvent *event); void canvasMousePressEvent (QMouseEvent *event); void canvasMouseReleaseEvent (QMouseEvent *event); void canvasWheelEvent (QWheelEvent *event); bool canvasKeyPressEvent (QKeyEvent *event); bool canvasKeyReleaseEvent (QKeyEvent *event); void updateCurrentPoint (const graphics_object& fig, const graphics_object& obj, QMouseEvent *event); void updateCurrentPoint (const graphics_object& fig, const graphics_object& obj); void select_object (graphics_object obj, QMouseEvent *event, graphics_object& currentObj, graphics_object& axesObj, bool axes_only = false, std::vector<std::string> omit = std::vector<std::string> ()); private: graphics_handle m_handle; bool m_redrawBlocked; MouseMode m_mouseMode; bool m_clickMode; // True: ZoomIn, False: ZoomOut QPoint m_mouseAnchor; QPoint m_mouseCurrent; graphics_handle m_mouseAxes; int m_eventMask; bool m_rectMode; }; } #endif