A drawing area with built in mouse handlers for pan-zoom control. More...

#include <mpblocks/gtk/pan_zoom_view.h>

Inheritance diagram for mpblocks::gtk::PanZoomView:

Public Member Functions
double	GetMaxDim ()
	return the maximum dimension of the More...

Eigen::Vector2d	GetOffset ()

double	GetScale ()

double	GetScaleRate ()

virtual bool	on_button_press_event (GdkEventButton *event)

virtual bool	on_draw (const Cairo::RefPtr< Cairo::Context > &ctx)

virtual bool	on_motion_notify_event (GdkEventMotion *event)

virtual bool	on_scroll_event (GdkEventScroll *event)

	PanZoomView ()

Eigen::Vector2d	RawPoint (double x, double y)
	Convert the point (x,y) in GTK coordinates, with the origin at the top left, to a point in traditional cartesian coordinates, where the origin is at the bottom left. More...

void	SetOffset (const Eigen::Vector2d &offset)

void	SetOffsetAdjustments (Glib::RefPtr< Gtk::Adjustment > offset_x, Glib::RefPtr< Gtk::Adjustment > offset_y)

void	SetScale (double scale)

void	SetScaleAdjustments (Glib::RefPtr< Gtk::Adjustment > scale, Glib::RefPtr< Gtk::Adjustment > scale_rate)

void	SetScaleRate (double scale_rate)

template<typename Event >
void	TransformEvent (Event *event)

Eigen::Vector2d	TransformPoint (double x, double y)
	Return a point in the virtual cartesian plane by applying the offset and scaling of the viewport. More...

Public Attributes
sigc::signal< void, GdkEventButton * >	sig_button
	button event with transformed coordinates More...

sigc::signal< void, const Cairo::RefPtr< Cairo::Context > & >	sig_draw
	Signal is emitted by the on_draw handler, and sends out the context with appropriate scaling and. More...

sigc::signal< void, GdkEventMotion * >	sig_motion
	motion event with transformed coordinates More...

Private Attributes
bool	active_
	If true, controls are enabled, if false, controls are disabled and events are passed through. More...

Eigen::Vector2d	last_pos_
	The last mouse position (used during pan) More...

Glib::RefPtr< Gtk::Adjustment >	offset_x_
	offset of viewport More...

Glib::RefPtr< Gtk::Adjustment >	offset_y_
	offset of viewport More...

int	pan_button_
	Which mouse button is used for pan. More...

guint	pan_button_mask_

Glib::RefPtr< Gtk::Adjustment >	scale_
	Size (in virtual units) of the largest dimension of the widget. More...

Glib::RefPtr< Gtk::Adjustment >	scale_rate_
	When the mouse wheel is turned multiply or divide the scale by this much. More...

Detailed Description

A drawing area with built in mouse handlers for pan-zoom control.

Definition at line 36 of file pan_zoom_view.h.

Constructor & Destructor Documentation

mpblocks::gtk::PanZoomView::PanZoomView ( )

inline

Definition at line 70 of file pan_zoom_view.h.

Member Function Documentation

double mpblocks::gtk::PanZoomView::GetMaxDim ( )

inline

return the maximum dimension of the

Definition at line 135 of file pan_zoom_view.h.

Eigen::Vector2d mpblocks::gtk::PanZoomView::GetOffset ( )

inline

Definition at line 110 of file pan_zoom_view.h.

double mpblocks::gtk::PanZoomView::GetScale ( )

inline

Definition at line 122 of file pan_zoom_view.h.

double mpblocks::gtk::PanZoomView::GetScaleRate ( )

inline

Definition at line 130 of file pan_zoom_view.h.

virtual bool mpblocks::gtk::PanZoomView::on_button_press_event ( GdkEventButton * event )

inlinevirtual

Definition at line 177 of file pan_zoom_view.h.

virtual bool mpblocks::gtk::PanZoomView::on_draw ( const Cairo::RefPtr< Cairo::Context > & ctx )

inlinevirtual

Definition at line 216 of file pan_zoom_view.h.

virtual bool mpblocks::gtk::PanZoomView::on_motion_notify_event ( GdkEventMotion * event )

inlinevirtual

Definition at line 159 of file pan_zoom_view.h.

virtual bool mpblocks::gtk::PanZoomView::on_scroll_event ( GdkEventScroll * event )

inlinevirtual

Definition at line 189 of file pan_zoom_view.h.

Eigen::Vector2d mpblocks::gtk::PanZoomView::RawPoint	(	double	x,
		double	y
	)

inline

Convert the point (x,y) in GTK coordinates, with the origin at the top left, to a point in traditional cartesian coordinates, where the origin is at the bottom left.

Definition at line 142 of file pan_zoom_view.h.

void mpblocks::gtk::PanZoomView::SetOffset ( const Eigen::Vector2d & offset )

inline

Definition at line 101 of file pan_zoom_view.h.

void mpblocks::gtk::PanZoomView::SetOffsetAdjustments	(	Glib::RefPtr< Gtk::Adjustment >	offset_x,
		Glib::RefPtr< Gtk::Adjustment >	offset_y
	)

inline

Definition at line 83 of file pan_zoom_view.h.

void mpblocks::gtk::PanZoomView::SetScale ( double scale )

inline

Definition at line 116 of file pan_zoom_view.h.

void mpblocks::gtk::PanZoomView::SetScaleAdjustments	(	Glib::RefPtr< Gtk::Adjustment >	scale,
		Glib::RefPtr< Gtk::Adjustment >	scale_rate
	)

inline

Definition at line 93 of file pan_zoom_view.h.

void mpblocks::gtk::PanZoomView::SetScaleRate ( double scale_rate )

inline

Definition at line 124 of file pan_zoom_view.h.

template<typename Event >

void mpblocks::gtk::PanZoomView::TransformEvent ( Event * event )

inline

Definition at line 153 of file pan_zoom_view.h.

Eigen::Vector2d mpblocks::gtk::PanZoomView::TransformPoint	(	double	x,
		double	y
	)

inline

Return a point in the virtual cartesian plane by applying the offset and scaling of the viewport.

Definition at line 148 of file pan_zoom_view.h.

Member Data Documentation

bool mpblocks::gtk::PanZoomView::active_

private

If true, controls are enabled, if false, controls are disabled and events are passed through.

Definition at line 53 of file pan_zoom_view.h.

Eigen::Vector2d mpblocks::gtk::PanZoomView::last_pos_

private

The last mouse position (used during pan)

Definition at line 49 of file pan_zoom_view.h.

Glib::RefPtr<Gtk::Adjustment> mpblocks::gtk::PanZoomView::offset_x_

private

offset of viewport

Definition at line 38 of file pan_zoom_view.h.

Glib::RefPtr<Gtk::Adjustment> mpblocks::gtk::PanZoomView::offset_y_

private

offset of viewport

Definition at line 39 of file pan_zoom_view.h.

int mpblocks::gtk::PanZoomView::pan_button_

private

Which mouse button is used for pan.

Definition at line 56 of file pan_zoom_view.h.

guint mpblocks::gtk::PanZoomView::pan_button_mask_

private

Definition at line 57 of file pan_zoom_view.h.

Glib::RefPtr<Gtk::Adjustment> mpblocks::gtk::PanZoomView::scale_

private

Size (in virtual units) of the largest dimension of the widget.

Definition at line 42 of file pan_zoom_view.h.

Glib::RefPtr<Gtk::Adjustment> mpblocks::gtk::PanZoomView::scale_rate_

private

When the mouse wheel is turned multiply or divide the scale by this much.

Definition at line 46 of file pan_zoom_view.h.

sigc::signal<void, GdkEventButton*> mpblocks::gtk::PanZoomView::sig_button

button event with transformed coordinates

Definition at line 68 of file pan_zoom_view.h.

sigc::signal<void, const Cairo::RefPtr<Cairo::Context>&> mpblocks::gtk::PanZoomView::sig_draw

Signal is emitted by the on_draw handler, and sends out the context with appropriate scaling and.

Definition at line 62 of file pan_zoom_view.h.

sigc::signal<void, GdkEventMotion*> mpblocks::gtk::PanZoomView::sig_motion

motion event with transformed coordinates

Definition at line 65 of file pan_zoom_view.h.

The documentation for this class was generated from the following file:

include/mpblocks/gtk/pan_zoom_view.h

Public Member Functions

Public Attributes

Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation