xref: /haiku/src/apps/cortex/ParameterView/ParameterWindow.h (revision 19ae20e67e91fc09cc9fc5c0e60e21e24e7a53eb)

/*
 * Copyright (c) 1999-2000, Eric Moon.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions, and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF TITLE, NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */


// ParameterWindow.h (Cortex/ParameterWindow)
//
// * PURPOSE
//	 Window subclass to contain BMediaTheme generated 'parameter
//	 views' and offers elegant resizing/zooming behaviour.
//
//	 The ParameterWindow currently listens to the MediaRoster for
// 	 changes of the parameter web, but this should change when the
//   provided BMediaTheme becomes more 'intelligent'.
//
//	 Support for selecting alternate themes is planned, but not
//	 yet finished (see the 'Themes' menu)
//
// * HISTORY
//   c.lenz		24nov99		Begun
//   c.lenz		17feb00		Added scrollbar support, migrated the
//							basic management functionality to new
//							class ParameterWindowManager
//

#ifndef __ParameterWindow_H__
#define __ParameterWindow_H__

// Interface Kit
#include <Window.h>
// Media Kit
#include <MediaNode.h>

class BMediaTheme;
class BMessenger;

#include "cortex_defs.h"
__BEGIN_CORTEX_NAMESPACE

class NodeRef;

class ParameterWindow :
	public		BWindow {

public:						// *** messages

	enum message_t {

		// OUTBOUND
		// fields:
		//	B_INT32_TYPE		"nodeID
		M_CLOSED = ParameterWindow_message_base,

		// OUTBOUND
		// fields:
		//	B_INT32_TYPE		"nodeID"
		//  B_MESSENGER_TYPE	"messenger"
		M_CONTROL_PANEL_STARTED,

		// INBOUND
		// fields:
		//	B_BOOL_TYPE			"replace"
		M_START_CONTROL_PANEL,

		// INBOUND
		// fields:
		//  B_INT32_TYPE		"themeID"
		M_THEME_SELECTED
	};

public:						// *** ctor/dtor

							ParameterWindow(
								BPoint position,
								live_node_info &nodeInfo,
								BMessenger *notifyTarget = 0);

	virtual					~ParameterWindow();

public:						// *** BWindow impl

	// remember that frame was changed manually
	virtual void			FrameResized(
								float width,
								float height);

	// closes the window when the node is released
	virtual void			MessageReceived(
								BMessage *message);

	// stop watching the MediaRoster, tell the notifyTarget
	virtual bool			QuitRequested();

	// extend basic Zoom() functionality to 'minimize' the
	// window when currently at max size
	virtual void			Zoom(
								BPoint origin,
								float width,
								float height);

private:					// *** internal operations

	// is called from the ctor for window-positioning
	void					_init();

	// adds or updates the parameter view using the given
	// theme
	void					_updateParameterView(
								BMediaTheme *theme = 0);

	// resizes the window to fit in the current screen rect
	void					_constrainToScreen();

	// tries to start the nodes control panel through the
	// MediaRoster
	status_t				_startControlPanel();

private:					// *** data members

	media_node				m_node;

	BView				   *m_parameters;

	BMessenger			   *m_notifyTarget;

	BRect					m_manualSize;

	BRect					m_idealSize;

	bool					m_zoomed;

	bool					m_zooming;
};

__END_CORTEX_NAMESPACE
#endif /* __ParameterWindow_H__ */