#include "symbols/mute.xpm"
#include "displayvolume.h"

cNopacityDisplayVolume::cNopacityDisplayVolume(void) {
    config.setDynamicValues();
    initial = true;
    muted = false;
    FrameTime = config.volumeFrameTime; 
    FadeTime = config.volumeFadeTime;

    width = cOsd::OsdWidth() * config.volumeWidth / 100;
    height = cOsd::OsdHeight() * config.volumeHeight / 100;

    int top = (cOsd::OsdHeight() - height) - config.volumeBorderBottom;
    int left = (cOsd::OsdWidth() - width) / 2;
    
    osd = CreateOsd(left, top, width, height);

    pixmapBackgroundTop = osd->CreatePixmap(1, cRect(0, 0, width, height/2));
    pixmapBackgroundBottom = osd->CreatePixmap(1, cRect(0, height/2, width, height/2));
    if (config.doBlending) {
        DrawBlendedBackground(pixmapBackgroundTop, Theme.Color(clrChannelBackground), Theme.Color(clrChannelBackBlend), true);
        DrawBlendedBackground(pixmapBackgroundBottom, Theme.Color(clrChannelBackground), Theme.Color(clrChannelBackBlend), false);
    } else {
        pixmapBackgroundTop->Fill(Theme.Color(clrChannelBackground));
        pixmapBackgroundBottom->Fill(Theme.Color(clrChannelBackground));
    }
    int cornerSize = height/4;
    if (cornerSize > 2) {
        pixmapBackgroundTop->DrawEllipse(cRect(0, 0, cornerSize, cornerSize), clrTransparent, -2);
        pixmapBackgroundTop->DrawEllipse(cRect(width - cornerSize, 0, cornerSize, cornerSize), clrTransparent, -1);
        pixmapBackgroundBottom->DrawEllipse(cRect(0, cornerSize, cornerSize, cornerSize), clrTransparent, -3);
        pixmapBackgroundBottom->DrawEllipse(cRect(width - cornerSize, cornerSize, cornerSize, cornerSize), clrTransparent, -4);
    }
    labelHeight = height/3;
    pixmapLabel = osd->CreatePixmap(2, cRect(0, 5, width, labelHeight));
    progressBarWidth = 0.9 * width;
    progressBarHeight = 0.3 * height;
    if (progressBarHeight%2 != 0)
        progressBarHeight++;
    pixmapProgressBar = osd->CreatePixmap(2, cRect((width - progressBarWidth) / 2, (height - progressBarHeight)*2/3, progressBarWidth, progressBarHeight));

    if (config.volumeFadeTime) {
        pixmapBackgroundTop->SetAlpha(0);
        pixmapBackgroundBottom->SetAlpha(0);
        pixmapProgressBar->SetAlpha(0);
        pixmapLabel->SetAlpha(0);
    }
    font = cFont::CreateFont(config.fontName, labelHeight - 6 + config.fontVolume);
}

cNopacityDisplayVolume::~cNopacityDisplayVolume() {
    Cancel(-1);
    while (Active())
        cCondWait::SleepMs(10);
    osd->DestroyPixmap(pixmapBackgroundTop);
    osd->DestroyPixmap(pixmapBackgroundBottom);
    osd->DestroyPixmap(pixmapLabel);
    osd->DestroyPixmap(pixmapProgressBar);
    delete font;
    delete osd;
}

void cNopacityDisplayVolume::SetVolume(int Current, int Total, bool Mute) {
    pixmapLabel->Fill(clrTransparent);
    cString label = cString::sprintf("%s: %d", tr("Volume"), Current);
    pixmapLabel->DrawText(cPoint((width - font->Width(*label)) / 2, (labelHeight - font->Height()) / 2), *label, Theme.Color(clrVolumeFont), clrTransparent, font);
    if (Mute) {
        cBitmap bmMute(mute_xpm);
        pixmapLabel->DrawBitmap(cPoint(width - 2*bmMute.Width(), (labelHeight - bmMute.Height()) / 2), bmMute, Theme.Color(clrDiskAlert), clrTransparent);
    }
        DrawProgressBar(Current, Total);
}

void cNopacityDisplayVolume::DrawProgressBar(int Current, int Total) {
    pixmapProgressBar->Fill(clrTransparent);
    if (progressBarHeight < 5)
        return;
    double percent = ((double)Current) / (double)Total;
    int barWidth = progressBarWidth - progressBarHeight;
    if ((Current > 0) || (Total > 0)) {
        pixmapProgressBar->DrawEllipse(cRect(0, 0, progressBarHeight, progressBarHeight), Theme.Color(clrProgressBarBack));
        pixmapProgressBar->DrawEllipse(cRect(progressBarWidth - progressBarHeight, 0, progressBarHeight, progressBarHeight), Theme.Color(clrProgressBarBack));
        pixmapProgressBar->DrawRectangle(cRect(progressBarHeight/2, 0, progressBarWidth - progressBarHeight, progressBarHeight), Theme.Color(clrProgressBarBack));

        pixmapProgressBar->DrawEllipse(cRect(1, 1, progressBarHeight-2, progressBarHeight-2), Theme.Color(clrProgressBarBlend));
        if (Current > 0) {
            tColor colAct = DrawProgressbarBackground(progressBarHeight / 2 - 1, 1, barWidth * percent - 2, progressBarHeight - 2);
            pixmapProgressBar->DrawEllipse(cRect(barWidth * percent, 1, progressBarHeight-2, progressBarHeight-2), colAct);
        }
    }
}

tColor cNopacityDisplayVolume::DrawProgressbarBackground(int left, int top, int width, int height) {

    tColor clr1 = Theme.Color(clrProgressBar);
    tColor clr2 = Theme.Color(clrProgressBarBlend);
    tColor clr = 0x00000000;
    int step = width / 256;
    int alpha = 0x0;
    int alphaStep;
    int maximum = 0;
    if (step == 0) {    //width < 256
        step = 1;
        alphaStep = 256 / width;
        maximum = width;
    } else {            //width > 256
        alphaStep = 0x1;
        maximum = 256;
    }
    int x = 0;
    for (int i = 0; i < maximum; i++) {
        x = left + i*step;
        clr = AlphaBlend(clr1, clr2, alpha);
        pixmapProgressBar->DrawRectangle(cRect(x,top,step,height), clr);
        alpha += alphaStep;
    }
    if (step > 0) {
        int rest = width - step*256;
        pixmapProgressBar->DrawRectangle(cRect(left+step*256, top, rest, height), clr);
    }
    return clr;
}

void cNopacityDisplayVolume::Flush(void) {
    if (initial)
        if (config.volumeFadeTime)
            Start();
    initial = false;
    osd->Flush();
}

void cNopacityDisplayVolume::Action(void) {
    uint64_t Start = cTimeMs::Now();
    while (Running()) {
        uint64_t Now = cTimeMs::Now();
        cPixmap::Lock();
        double t = min(double(Now - Start) / FadeTime, 1.0);
        int Alpha = t * ALPHA_OPAQUE;
        pixmapBackgroundTop->SetAlpha(Alpha);
        pixmapBackgroundBottom->SetAlpha(Alpha);
        pixmapProgressBar->SetAlpha(Alpha);
        pixmapLabel->SetAlpha(Alpha);
        if (Running())
            osd->Flush();
        cPixmap::Unlock();
        int Delta = cTimeMs::Now() - Now;
        if (Running() && (Delta < FrameTime))
            cCondWait::SleepMs(FrameTime - Delta);
        if ((int)(Now - Start) > FadeTime)
            break;
    }
}