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koffice/krita/ui/kis_canvas.h

382 lines
12 KiB

/*
* Copyright (c) 1999 Matthias Elter <me@kde.org>
* Copyright (c) 2004-2006 Adrian Page <adrian@pagenet.plus.com>
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef KIS_CANVAS_H_
#define KIS_CANVAS_H_
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <qwidget.h>
#ifdef HAVE_GL
#include <qgl.h>
#endif
#include <qpainter.h>
#include "kis_global.h"
#include "kis_point.h"
#include "kis_vec.h"
#include "kis_input_device.h"
#ifdef Q_WS_X11
// Irix has a different (and better) XInput tablet driver to
// the XFree/xorg driver. Qt needs a separate code path for that
// and so would we.
#if defined(HAVE_XINPUTEXT) && !defined(Q_OS_IRIX)
#define EXTENDED_X11_TABLET_SUPPORT
#endif
#include <map>
#include <X11/Xlib.h>
#if defined(EXTENDED_X11_TABLET_SUPPORT)
#include <X11/extensions/XInput.h>
#endif
#endif // Q_WS_X11
class KisEvent;
class KisMoveEvent;
class KisButtonPressEvent;
class KisButtonReleaseEvent;
class KisDoubleClickEvent;
class KisCanvasWidgetPainter;
class KisCanvasWidget : public QObject {
Q_OBJECT
public:
KisCanvasWidget();
virtual ~KisCanvasWidget();
// When enabled, the canvas may throw away move events if the application
// is unable to keep up with them, i.e. intermediate move events in the event
// queue are skipped.
void enableMoveEventCompressionHint(bool enableMoveCompression) { m_enableMoveEventCompressionHint = enableMoveCompression; }
virtual KisCanvasWidgetPainter *createPainter() = 0;
#ifdef EXTENDED_X11_TABLET_SUPPORT
static KisInputDevice findActiveInputDevice();
virtual void selectTabletDeviceEvents() = 0;
static void selectTabletDeviceEvents(QWidget *widget);
#endif
#ifdef Q_WS_X11
static void initX11Support();
#endif
signals:
void sigGotPaintEvent(QPaintEvent*);
void sigGotEnterEvent(QEvent*);
void sigGotLeaveEvent(QEvent*);
void sigGotMouseWheelEvent(QWheelEvent*);
void sigGotKeyPressEvent(QKeyEvent*);
void sigGotKeyReleaseEvent(QKeyEvent*);
void sigGotDragEnterEvent(QDragEnterEvent*);
void sigGotDropEvent(QDropEvent*);
void sigGotMoveEvent(KisMoveEvent *);
void sigGotButtonPressEvent(KisButtonPressEvent *);
void sigGotButtonReleaseEvent(KisButtonReleaseEvent *);
void sigGotDoubleClickEvent(KisDoubleClickEvent *);
protected:
void widgetGotPaintEvent(QPaintEvent *event);
void widgetGotMousePressEvent(QMouseEvent *event);
void widgetGotMouseReleaseEvent(QMouseEvent *event);
void widgetGotMouseDoubleClickEvent(QMouseEvent *event);
void widgetGotMouseMoveEvent(QMouseEvent *event);
void widgetGotTabletEvent(QTabletEvent *event);
void widgetGotEnterEvent(QEvent *event );
void widgetGotLeaveEvent(QEvent *event);
void widgetGotWheelEvent(QWheelEvent *event);
void widgetGotKeyPressEvent(QKeyEvent *event);
void widgetGotKeyReleaseEvent(QKeyEvent *event);
void widgetGotDragEnterEvent(QDragEnterEvent *event);
void widgetGotDropEvent(QDropEvent *event);
void moveEvent(KisMoveEvent *event);
void buttonPressEvent(KisButtonPressEvent *event);
void buttonReleaseEvent(KisButtonReleaseEvent *event);
void doubleClickEvent(KisDoubleClickEvent *event);
void translateTabletEvent(KisEvent *event);
protected:
bool m_enableMoveEventCompressionHint;
double m_lastPressure;
#ifdef Q_WS_X11
// On X11 systems, Qt throws away mouse move events if the application
// is unable to keep up with them. We override this behaviour so that
// we receive all move events, so that painting follows the mouse's motion
// accurately.
bool x11Event(XEvent *event, Display *x11Display, WId winId, QPoint widgetOriginPos);
static Qt::ButtonState translateX11ButtonState(int state);
static Qt::ButtonState translateX11Button(unsigned int button);
static bool X11SupportInitialised;
// Modifier masks for alt/meta - detected at run-time
static long X11AltMask;
static long X11MetaMask;
int m_lastRootX;
int m_lastRootY;
#ifdef EXTENDED_X11_TABLET_SUPPORT
public:
class X11TabletDevice
{
public:
X11TabletDevice();
X11TabletDevice(const XDeviceInfo *deviceInfo);
bool mightBeTabletDevice() const { return m_mightBeTabletDevice; }
XID id() const { return m_deviceId; }
XDevice *xDevice() const { return m_XDevice; }
QString name() const { return m_name; }
KisInputDevice inputDevice() const { return m_inputDevice; }
void setInputDevice(KisInputDevice inputDevice) { m_inputDevice = inputDevice; }
void setEnabled(bool enabled);
bool enabled() const;
Q_INT32 numAxes() const;
void setXAxis(Q_INT32 axis);
void setYAxis(Q_INT32 axis);
void setPressureAxis(Q_INT32 axis);
void setXTiltAxis(Q_INT32 axis);
void setYTiltAxis(Q_INT32 axis);
void setWheelAxis(Q_INT32 axis);
void setToolIDAxis(Q_INT32 axis);
void setSerialNumberAxis(Q_INT32 axis);
static const Q_INT32 NoAxis = -1;
static const Q_INT32 DefaultAxis = -2;
Q_INT32 xAxis() const;
Q_INT32 yAxis() const;
Q_INT32 pressureAxis() const;
Q_INT32 xTiltAxis() const;
Q_INT32 yTiltAxis() const;
Q_INT32 wheelAxis() const;
Q_INT32 toolIDAxis() const;
Q_INT32 serialNumberAxis() const;
void readSettingsFromConfig();
void writeSettingsToConfig();
// These return -1 if the device does not support the event
int buttonPressEvent() const { return m_buttonPressEvent; }
int buttonReleaseEvent() const { return m_buttonReleaseEvent; }
int motionNotifyEvent() const { return m_motionNotifyEvent; }
int proximityInEvent() const { return m_proximityInEvent; }
int proximityOutEvent() const { return m_proximityOutEvent; }
void enableEvents(QWidget *widget) const;
class State
{
public:
State() {}
State(const KisPoint& pos, double pressure, const KisVector2D& tilt, double wheel,
Q_UINT32 toolID, Q_UINT32 serialNumber);
// Position, pressure and wheel are normalised to 0 - 1
KisPoint pos() const { return m_pos; }
double pressure() const { return m_pressure; }
// Tilt is normalised to -1->+1
KisVector2D tilt() const { return m_tilt; }
double wheel() const { return m_wheel; }
// Wacom tool id and serial number of device.
Q_UINT32 toolID() const { return m_toolID; }
Q_UINT32 serialNumber() const { return m_serialNumber; }
private:
KisPoint m_pos;
double m_pressure;
KisVector2D m_tilt;
double m_wheel;
Q_UINT32 m_toolID;
Q_UINT32 m_serialNumber;
};
State translateAxisData(const int *axisData) const;
private:
double translateAxisValue(int value, const XAxisInfo& axisInfo) const;
XID m_deviceId;
XDevice *m_XDevice;
QString m_name;
bool m_mightBeTabletDevice;
KisInputDevice m_inputDevice;
bool m_enabled;
Q_INT32 m_xAxis;
Q_INT32 m_yAxis;
Q_INT32 m_pressureAxis;
Q_INT32 m_xTiltAxis;
Q_INT32 m_yTiltAxis;
Q_INT32 m_wheelAxis;
Q_INT32 m_toolIDAxis;
Q_INT32 m_serialNumberAxis;
QValueVector<XAxisInfo> m_axisInfo;
int m_motionNotifyEvent;
int m_buttonPressEvent;
int m_buttonReleaseEvent;
int m_proximityInEvent;
int m_proximityOutEvent;
QValueVector<XEventClass> m_eventClassList;
};
typedef std::map<XID, X11TabletDevice> X11XIDTabletDeviceMap;
static X11XIDTabletDeviceMap& tabletDeviceMap();
protected:
static int X11DeviceMotionNotifyEvent;
static int X11DeviceButtonPressEvent;
static int X11DeviceButtonReleaseEvent;
static int X11ProximityInEvent;
static int X11ProximityOutEvent;
static X11XIDTabletDeviceMap X11TabletDeviceMap;
#endif // EXTENDED_X11_TABLET_SUPPORT
#endif // Q_WS_X11
};
class KisCanvas : public QObject {
Q_OBJECT
public:
KisCanvas(QWidget *parent, const char *name);
virtual ~KisCanvas();
// When enabled, the canvas may throw away move events if the application
// is unable to keep up with them, i.e. intermediate move events in the event
// queue are skipped.
void enableMoveEventCompressionHint(bool enableMoveCompression);
bool isOpenGLCanvas() const;
/**
* Returns true if the cursor is over the canvas.
*/
bool cursorIsOverCanvas() const;
/**
* Handle the given event (which must be a key event) as if the canvas
* had received it directly.
*/
void handleKeyEvent(QEvent *e);
int width() const;
int height() const;
void update();
void update(const QRect& r);
void update(int x, int y, int width, int height);
void repaint();
void repaint(bool erase);
void repaint(int x, int y, int width, int height, bool erase = true);
void repaint(const QRect& r, bool erase = true);
void repaint(const QRegion& r, bool erase = true);
void updateGeometry();
#if defined(EXTENDED_X11_TABLET_SUPPORT)
void selectTabletDeviceEvents();
#endif
signals:
void sigGotPaintEvent(QPaintEvent*);
void sigGotEnterEvent(QEvent*);
void sigGotLeaveEvent(QEvent*);
void sigGotMouseWheelEvent(QWheelEvent*);
void sigGotKeyPressEvent(QKeyEvent*);
void sigGotKeyReleaseEvent(QKeyEvent*);
void sigGotDragEnterEvent(QDragEnterEvent*);
void sigGotDropEvent(QDropEvent*);
void sigGotMoveEvent(KisMoveEvent *);
void sigGotButtonPressEvent(KisButtonPressEvent *);
void sigGotButtonReleaseEvent(KisButtonReleaseEvent *);
void sigGotDoubleClickEvent(KisDoubleClickEvent *);
protected:
// Allow KisView to render on the widget directly, but everything else
// has restricted access.
friend class KisView;
friend class KisCanvasPainter;
// One of these will be valid, the other null. In Qt3, using a QPainter on
// a QGLWidget is not reliable.
QWidget *QPaintDeviceWidget() const;
#ifdef HAVE_GL
QGLWidget *OpenGLWidget() const;
#endif
void createQPaintDeviceCanvas();
#ifdef HAVE_GL
void createOpenGLCanvas(QGLWidget *sharedContextWidget);
#endif
void show();
void hide();
void setGeometry(int x, int y, int width, int height);
void setUpdatesEnabled(bool updatesEnabled);
bool isUpdatesEnabled() const;
void setFocusPolicy(QWidget::FocusPolicy focusPolicy);
const QCursor& cursor() const;
void setCursor(const QCursor& cursor);
KisCanvasWidgetPainter *createPainter();
KisCanvasWidget *canvasWidget() const;
protected:
#ifdef HAVE_GL
void createCanvasWidget(bool useOpenGL, QGLWidget *sharedContextWidget = 0);
#else
void createCanvasWidget(bool useOpenGL);
#endif
QWidget *m_parent;
QString m_name;
KisCanvasWidget *m_canvasWidget;
bool m_enableMoveEventCompressionHint;
bool m_useOpenGL;
};
#endif // KIS_CANVAS_H_