/*
 * Copyright 2005, Jérôme Duval. All rights reserved.
 * Distributed under the terms of the MIT License.
 *
 * Inspired by SoundCapture from Be newsletter (Media Kit Basics: Consumers and Producers)
 */
 
#include <stdio.h>

#include "VolumeSlider.h"
#include "icon_button.h"

#define VOLUME_CHANGED 'vlcg'
#define RATIO 2.0f

VolumeSlider::VolumeSlider(BRect rect, const char *title, uint32 resizeFlags)
	: BControl(rect, "slider", NULL, new BMessage(VOLUME_CHANGED), resizeFlags, B_WILL_DRAW),
	fLeftBitmap(BRect(0, 0, kLeftVolumeWidth - 1, kLeftVolumeHeight - 1), B_CMAP8),
	fRightBitmap(BRect(0, 0, kRightVolumeWidth - 1, kRightVolumeHeight - 1), B_CMAP8),
	fButtonBitmap(BRect(0, 0, kThumbWidth - 1, kThumbHeight - 1), B_CMAP8),
	fSoundPlayer(NULL)
{
	fLeftBitmap.SetBits(kLeftVolumeBits, kLeftVolumeWidth * kLeftVolumeHeight, 0, B_CMAP8);
	fRightBitmap.SetBits(kRightVolumeBits, kRightVolumeWidth * kRightVolumeHeight, 0, B_CMAP8);
	fButtonBitmap.SetBits(kThumbBits, kThumbWidth * kThumbHeight, 0, B_CMAP8);

	fRight = Bounds().right - 15;	
}


VolumeSlider::~VolumeSlider()
{
	
}


void
VolumeSlider::Draw(BRect updateRect)
{
	SetHighColor(189,186,189);
	StrokeLine(BPoint(11,1), BPoint(fRight,1));
	SetHighColor(0,0,0);
	StrokeLine(BPoint(11,2), BPoint(fRight,2));
	SetHighColor(255,255,255);
	StrokeLine(BPoint(11,14), BPoint(fRight,14));
	SetHighColor(231,227,231);
	StrokeLine(BPoint(11,15), BPoint(fRight,15));
	
	SetLowColor(ViewColor());

	SetDrawingMode(B_OP_OVER);

	DrawBitmapAsync(&fLeftBitmap, BPoint(5,1));
	DrawBitmapAsync(&fRightBitmap, BPoint(fRight + 1,1));

	float position = 11 + (fRight - 11) * (fSoundPlayer ? fSoundPlayer->Volume() / RATIO : 0);
	SetHighColor(102,152,102);
	FillRect(BRect(11,3,position,4));
	SetHighColor(152,203,152);
	FillRect(BRect(11,5,position,13));
	
	if (fSoundPlayer)
		SetHighColor(152,152,152);
	else
		SetHighColor(200,200,200);
	FillRect(BRect(position,3,fRight,13));
	
	SetHighColor(102,152,102);
	for (int i=15; i<=fRight + 1; i+=5) {
		if (i>position)
			SetHighColor(128,128,128);
		StrokeLine(BPoint(i,8), BPoint(i,9));
	}		
		
	DrawBitmapAsync(&fButtonBitmap, BPoint(position-5,3));
	
	Sync();
	
	SetDrawingMode(B_OP_COPY);
}


void 
VolumeSlider::MouseMoved(BPoint point, uint32 transit, const BMessage *message)
{
	if (!IsTracking())
		return;
		
	uint32 mouseButtons;
	BPoint where;
	GetMouse(&where, &mouseButtons, true);
	
	// button not pressed, exit
	if (! (mouseButtons & B_PRIMARY_MOUSE_BUTTON)) {
		Invoke();
		SetTracking(false);
	}
		
	if (!fSoundPlayer || !Bounds().InsetBySelf(2,2).Contains(point))
		return;

	UpdateVolume(point);
}


void
VolumeSlider::MouseDown(BPoint point)
{
	if (!fSoundPlayer || !Bounds().InsetBySelf(2,2).Contains(point))
		return;

	UpdateVolume(point);
	SetTracking(true);
	SetMouseEventMask(B_POINTER_EVENTS, B_LOCK_WINDOW_FOCUS);
}


void
VolumeSlider::MouseUp(BPoint point)
{
	if (!IsTracking())
		return;
	if (fSoundPlayer && Bounds().InsetBySelf(2,2).Contains(point)) {
		UpdateVolume(point);
	}
	
	Invoke();
	SetTracking(false);
	Draw(Bounds());
	Flush();
}


void
VolumeSlider::UpdateVolume(BPoint point)
{
	fVolume = MIN(MAX(point.x, 11), fRight);
	fVolume = (fVolume - 11) / (fRight - 11);
	fVolume = MAX(MIN(fVolume,1), 0);
	Draw(Bounds());
	Flush();
	if (fSoundPlayer)
		fSoundPlayer->SetVolume(fVolume * RATIO);
}

void
VolumeSlider::SetSoundPlayer(BSoundPlayer *player)
{
	fSoundPlayer = player;
	Invalidate();
}


SpeakerView::SpeakerView(BRect rect, uint32 resizeFlags)
	: BBox(rect, "speaker", resizeFlags, B_WILL_DRAW, B_NO_BORDER),
	fSpeakerBitmap(BRect(0, 0, kSpeakerIconBitmapWidth - 1, kSpeakerIconBitmapHeight - 1), B_CMAP8)
{
	fSpeakerBitmap.SetBits(kSpeakerIconBits, kSpeakerIconBitmapWidth * kSpeakerIconBitmapHeight, 0, B_CMAP8);
}


SpeakerView::~SpeakerView()
{
	
}


void
SpeakerView::Draw(BRect updateRect)
{
	SetDrawingMode(B_OP_OVER);
	
	DrawBitmap(&fSpeakerBitmap);
	
	SetDrawingMode(B_OP_COPY);
}