gui/animation.cpp

// animation.cpp - GUIAnimation object

#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <sys/reboot.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <time.h>
#include <unistd.h>
#include <stdlib.h>

#include <string>

extern "C" {
#include "../twcommon.h"
#include "../minuitwrp/minui.h"
}

#include "rapidxml.hpp"
#include "objects.hpp"


GUIAnimation::GUIAnimation(xml_node<>* node)
{
    xml_node<>* child;
    xml_attribute<>* attr;

    mAnimation = NULL;
    mFrame = 1;
    mFPS = 1;
    mLoop = -1;
    mRender = 1;
    mUpdateCount = 0;

    if (!node)  return;

    child = node->first_node("resource");
    if (child)
    {
        attr = child->first_attribute("name");
        if (attr)
            mAnimation = (AnimationResource*) PageManager::FindResource(attr->value());
    }

    // Load the placement
    LoadPlacement(node->first_node("placement"), &mRenderX, &mRenderY, NULL, NULL, &mPlacement);

    child = node->first_node("speed");
    if (child)
    {
        attr = child->first_attribute("fps");
        if (attr)
            mFPS = atoi(attr->value());
        attr = child->first_attribute("render");
        if (attr)
            mRender = atoi(attr->value());
    }
    if (mFPS > 30)  mFPS = 30;

    child = node->first_node("loop");
    if (child)
    {
        attr = child->first_attribute("frame");
        if (attr)
            mLoop = atoi(attr->value()) - 1;
        attr = child->first_attribute("start");
        if (attr)
            mFrame = atoi(attr->value());
    }

    // Fetch the render sizes
    if (mAnimation && mAnimation->GetResource())
    {
        mRenderW = gr_get_width(mAnimation->GetResource());
        mRenderH = gr_get_height(mAnimation->GetResource());

        // Adjust for placement
        if (mPlacement != TOP_LEFT && mPlacement != BOTTOM_LEFT)
        {
            if (mPlacement == CENTER)
                mRenderX -= (mRenderW / 2);
            else
                mRenderX -= mRenderW;
        }
        if (mPlacement != TOP_LEFT && mPlacement != TOP_RIGHT)
        {
            if (mPlacement == CENTER)
                mRenderY -= (mRenderH / 2);
            else
                mRenderY -= mRenderH;
        }
        SetPlacement(TOP_LEFT);
    }
}

int GUIAnimation::Render(void)
{
    if (!mAnimation || !mAnimation->GetResource(mFrame))      return -1;

    gr_blit(mAnimation->GetResource(mFrame), 0, 0, mRenderW, mRenderH, mRenderX, mRenderY);
    return 0;
}

int GUIAnimation::Update(void)
{
    if (!mAnimation)        return -1;

    // Handle the "end-of-animation" state
    if (mLoop == -2)        return 0;

    // Determine if we need the next frame yet...
    if (++mUpdateCount > 30 / mFPS)
    {
        mUpdateCount = 0;
        if (++mFrame >= mAnimation->GetResourceCount())
        {
            if (mLoop < 0)
            {
                mFrame = mAnimation->GetResourceCount() - 1;
                mLoop = -2;
            }
            else
                mFrame = mLoop;
        }
        if (mRender == 2)   return 2;
        return (Render() == 0 ? 1 : -1);
    }
    return 0;
}