xref: /packages/apps/Gallery2/src/com/android/gallery3d/filtershow/FilterShowActivity.java

package com.android.gallery3d.filtershow;

import java.util.Vector;

import com.android.gallery3d.filtershow.cache.ImageLoader;
import com.android.gallery3d.filtershow.filters.*;
import com.android.gallery3d.filtershow.imageshow.ImageBorder;
import com.android.gallery3d.filtershow.imageshow.ImageShow;
import com.android.gallery3d.filtershow.imageshow.ImageSmallFilter;
import com.android.gallery3d.filtershow.imageshow.ImageStraighten;
import com.android.gallery3d.filtershow.presets.*;
import com.android.gallery3d.filtershow.ui.ImageCurves;
import com.android.gallery3d.R;

import android.net.Uri;
import android.os.Bundle;
import android.annotation.TargetApi;
import android.app.Activity;
import android.content.Intent;
import android.content.res.Resources;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.NinePatchDrawable;
import android.util.Log;
import android.util.TypedValue;
import android.view.Gravity;
import android.view.Menu;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnTouchListener;
import android.widget.AbsoluteLayout;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.Toast;

@TargetApi(16)
public class FilterShowActivity extends Activity implements OnItemClickListener {

    private ImageLoader mImageLoader = null;
    private ImageShow mImageShow = null;
    private ImageCurves mImageCurves = null;
    private ImageBorder mImageBorders = null;
    private ImageStraighten mImageStraighten = null;

    private View mListFx = null;
    private View mListBorders = null;
    private View mListGeometry = null;
    private View mListColors = null;

    private ImageButton mFxButton = null;
    private ImageButton mBorderButton = null;
    private ImageButton mGeometryButton = null;
    private ImageButton mColorsButton = null;

    private ImageButton mVignetteButton = null;
    private ImageButton mCurvesButtonRGB = null;
    private ImageButton mCurvesButtonRed = null;
    private ImageButton mCurvesButtonGreen = null;
    private ImageButton mCurvesButtonBlue = null;
    private ImageButton mSharpenButton = null;
    private ImageButton mContrastButton = null;

    private static final int SELECT_PICTURE = 1;
    private static final String LOGTAG = "FilterShowActivity";
    protected static final boolean ANIMATE_PANELS = false;

    private boolean mShowingHistoryPanel = false;
    private Vector<ImageShow> mImageViews = new Vector<ImageShow>();
    private Vector<View> mListViews = new Vector<View>();
    private Vector<ImageButton> mBottomPanelButtons = new Vector<ImageButton>();
    private Vector<ImageButton> mColorsPanelButtons = new Vector<ImageButton>();

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.filtershow_activity);

        mImageLoader = new ImageLoader(getApplicationContext());

        LinearLayout listFilters = (LinearLayout) findViewById(R.id.listFilters);
        LinearLayout listBorders = (LinearLayout) findViewById(R.id.listBorders);

        mImageShow = (ImageShow) findViewById(R.id.imageShow);
        mImageCurves = (ImageCurves) findViewById(R.id.imageCurves);
        mImageBorders = (ImageBorder) findViewById(R.id.imageBorder);
        mImageStraighten = (ImageStraighten) findViewById(R.id.imageStraighten);

        mImageViews.add(mImageShow);
        mImageViews.add(mImageCurves);
        mImageViews.add(mImageBorders);
        mImageViews.add(mImageStraighten);

        mListFx = findViewById(R.id.fxList);
        mListBorders = findViewById(R.id.bordersList);
        mListGeometry = findViewById(R.id.gemoetryList);
        mListColors = findViewById(R.id.colorsFxList);
        mListViews.add(mListFx);
        mListViews.add(mListBorders);
        mListViews.add(mListGeometry);
        mListViews.add(mListColors);

        mFxButton = (ImageButton) findViewById(R.id.fxButton);
        mBorderButton = (ImageButton) findViewById(R.id.borderButton);
        mGeometryButton = (ImageButton) findViewById(R.id.geometryButton);
        mColorsButton = (ImageButton) findViewById(R.id.colorsButton);
        mBottomPanelButtons.add(mFxButton);
        mBottomPanelButtons.add(mBorderButton);
        mBottomPanelButtons.add(mGeometryButton);
        mBottomPanelButtons.add(mColorsButton);
        mFxButton.setSelected(true);

        mVignetteButton = (ImageButton) findViewById(R.id.vignetteButton);
        mCurvesButtonRGB = (ImageButton) findViewById(R.id.curvesButtonRGB);
        mCurvesButtonRed = (ImageButton) findViewById(R.id.curvesButtonRed);
        mCurvesButtonGreen = (ImageButton) findViewById(R.id.curvesButtonGreen);
        mCurvesButtonBlue = (ImageButton) findViewById(R.id.curvesButtonBlue);
        mSharpenButton = (ImageButton) findViewById(R.id.sharpenButton);
        mContrastButton = (ImageButton) findViewById(R.id.contrastButton);
        mColorsPanelButtons.add(mVignetteButton);
        mColorsPanelButtons.add(mCurvesButtonRGB);
        mColorsPanelButtons.add(mCurvesButtonRed);
        mColorsPanelButtons.add(mCurvesButtonGreen);
        mColorsPanelButtons.add(mCurvesButtonBlue);
        mColorsPanelButtons.add(mSharpenButton);
        mColorsPanelButtons.add(mContrastButton);

        mCurvesButtonRGB.setSelected(true);

        // TODO: instead of click listeners, make the activity the single listener and
        // do a dispatch in the listener callback method.
        findViewById(R.id.saveButton).setOnClickListener(createOnClickSaveButton());
        findViewById(R.id.showOriginalButton).setOnTouchListener(createOnTouchShowOriginalButton());
        findViewById(R.id.straightenButton).setOnClickListener(createOnClickStraightenButton());
        findViewById(R.id.cropButton).setOnClickListener(createOnClickCropButton());
        findViewById(R.id.rotateButton).setOnClickListener(createOnClickRotateButton());
        findViewById(R.id.flipButton).setOnClickListener(createOnClickFlipButton());

        mVignetteButton.setOnClickListener(createOnClickVignetteButton());
        mCurvesButtonRGB.setOnClickListener(createOnClickCurvesRGBButton());
        mCurvesButtonRed.setOnClickListener(createOnClickCurvesRedButton());
        mCurvesButtonGreen.setOnClickListener(createOnClickCurvesGreenButton());
        mCurvesButtonBlue.setOnClickListener(createOnClickCurvesBlueButton());

        mSharpenButton.setOnClickListener(createOnClickSharpenButton());
        mContrastButton.setOnClickListener(createOnClickContrastButton());
        findViewById(R.id.undoButton).setOnClickListener(createOnClickUndoButton());
        findViewById(R.id.redoButton).setOnClickListener(createOnClickRedoButton());

        mFxButton.setOnClickListener(createOnClickFxButton());
        mBorderButton.setOnClickListener(createOnClickBorderButton());
        mGeometryButton.setOnClickListener(createOnClickGeometryButton());
        mColorsButton.setOnClickListener(createOnClickColorsButton());

        findViewById(R.id.operationsButton).setOnClickListener(createOnClickOperationsButton());
        findViewById(R.id.resetOperationsButton).setOnClickListener(
                createOnClickResetOperationsButton());

        ListView operationsList = (ListView) findViewById(R.id.operationsList);
        operationsList.setAdapter(mImageShow.getListAdapter());
        operationsList.setOnItemClickListener(this);
        mImageLoader.setAdapter((HistoryAdapter) mImageShow.getListAdapter());

        fillListImages(listFilters);
        fillListBorders(listBorders);

        mImageShow.setImageLoader(mImageLoader);
        mImageCurves.setImageLoader(mImageLoader);
        mImageCurves.setMaster(mImageShow);
        mImageBorders.setImageLoader(mImageLoader);
        mImageBorders.setMaster(mImageShow);
        mImageStraighten.setImageLoader(mImageLoader);
        mImageStraighten.setMaster(mImageShow);

        Intent intent = getIntent();
        String data = intent.getDataString();
        if (data != null) {
            Uri uri = Uri.parse(data);
            mImageLoader.loadBitmap(uri);
        } else {
            pickImage();
        }
    }

    private void fillListImages(LinearLayout listFilters) {
        // TODO: use listview
        // TODO: load the filters straight from the filesystem
        ImagePreset[] preset = new ImagePreset[9];
        int p = 0;
        preset[p++] = new ImagePreset();
        preset[p++] = new ImagePresetSaturated();
        preset[p++] = new ImagePresetOld();
        preset[p++] = new ImagePresetXProcessing();
        preset[p++] = new ImagePresetBW();
        preset[p++] = new ImagePresetBWRed();
        preset[p++] = new ImagePresetBWGreen();
        preset[p++] = new ImagePresetBWBlue();

        for (int i = 0; i < p; i++) {
            ImageSmallFilter filter = new ImageSmallFilter(getBaseContext());
            preset[i].setIsFx(true);
            filter.setImagePreset(preset[i]);
            filter.setController(this);
            filter.setImageLoader(mImageLoader);
            listFilters.addView(filter);
        }

        // Default preset (original)
        mImageShow.setImagePreset(preset[0]);
    }

    private void fillListBorders(LinearLayout listBorders) {
        // TODO: use listview
        // TODO: load the borders straight from the filesystem
        int p = 0;
        ImageFilter[] borders = new ImageFilter[8];
        borders[p++] = new ImageFilterBorder(null);

        Drawable npd3 = getResources().getDrawable(R.drawable.filtershow_border_film3);
        borders[p++] = new ImageFilterBorder(npd3);
        Drawable npd = getResources().getDrawable(
                R.drawable.filtershow_border_scratch3);
        borders[p++] = new ImageFilterBorder(npd);
        Drawable npd2 = getResources().getDrawable(R.drawable.filtershow_border_black);
        borders[p++] = new ImageFilterBorder(npd2);
        Drawable npd6 = getResources().getDrawable(
                R.drawable.filtershow_border_rounded_black);
        borders[p++] = new ImageFilterBorder(npd6);
        Drawable npd4 = getResources().getDrawable(R.drawable.filtershow_border_white);
        borders[p++] = new ImageFilterBorder(npd4);
        Drawable npd5 = getResources().getDrawable(
                R.drawable.filtershow_border_rounded_white);
        borders[p++] = new ImageFilterBorder(npd5);

        for (int i = 0; i < p; i++) {
            ImageSmallFilter filter = new ImageSmallFilter(getBaseContext());
            filter.setImageFilter(borders[i]);
            filter.setController(this);
            filter.setImageLoader(mImageLoader);
            listBorders.addView(filter);
        }
    }

    // //////////////////////////////////////////////////////////////////////////////
    // Some utility functions

    public void showOriginalViews(boolean value) {
        for (ImageShow views : mImageViews) {
            views.showOriginal(value);
        }
    }

    public void invalidateViews() {
        for (ImageShow views : mImageViews) {
            views.invalidate();
        }
    }

    public void hideListViews() {
        for (View view : mListViews) {
            view.setVisibility(View.GONE);
        }
    }

    public void hideImageViews() {
        mImageShow.setShowControls(false); // reset
        for (View view : mImageViews) {
            view.setVisibility(View.GONE);
        }
    }

    public void unselectBottomPanelButtons() {
        for (ImageButton button : mBottomPanelButtons) {
            button.setSelected(false);
        }
    }

    public void unselectPanelButtons(Vector<ImageButton> buttons) {
        for (ImageButton button : buttons) {
            button.setSelected(false);
        }
    }

    // //////////////////////////////////////////////////////////////////////////////
    // Click handlers for the top row buttons

    private OnClickListener createOnClickSaveButton() {
        return new View.OnClickListener() {
            public void onClick(View v) {
                saveImage();
            }
        };
    }

    private OnTouchListener createOnTouchShowOriginalButton() {
        return new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                boolean show = false;
                if ((event.getActionMasked() != MotionEvent.ACTION_UP)
                        || (event.getActionMasked() == MotionEvent.ACTION_CANCEL)) {
                    show = true;
                }
                showOriginalViews(show);
                return true;
            }
        };
    }

    private OnClickListener createOnClickUndoButton() {
        return new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                HistoryAdapter adapter = (HistoryAdapter) mImageShow
                        .getListAdapter();
                int position = adapter.undo();
                mImageShow.onItemClick(position);
                mImageShow.showToast("Undo");
                invalidateViews();
            }
        };
    }

    private OnClickListener createOnClickRedoButton() {
        return new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                HistoryAdapter adapter = (HistoryAdapter) mImageShow
                        .getListAdapter();
                int position = adapter.redo();
                mImageShow.onItemClick(position);
                mImageShow.showToast("Redo");
                invalidateViews();
            }
        };
    }

    // //////////////////////////////////////////////////////////////////////////////
    // history panel...

    private OnClickListener createOnClickOperationsButton() {
        return new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                final View view = findViewById(R.id.mainPanel);
                final View viewList = findViewById(R.id.historyPanel);
                View rootView = viewList.getRootView();

                // TODO: use a custom layout instead of absolutelayout...
                final AbsoluteLayout.LayoutParams lp = (AbsoluteLayout.LayoutParams) view
                        .getLayoutParams();
                final AbsoluteLayout.LayoutParams lph = (AbsoluteLayout.LayoutParams) viewList
                        .getLayoutParams();
                final int positionHistoryPanel = (int) (rootView.getWidth() - viewList
                        .getWidth());
                if (!mShowingHistoryPanel) {
                    mShowingHistoryPanel = true;
                    view.animate().setDuration(200).x(-viewList.getWidth())
                            .withLayer().withEndAction(new Runnable() {
                                public void run() {
                                    view.setLayoutParams(lp);
                                    lph.x = positionHistoryPanel;
                                    viewList.setLayoutParams(lph);
                                    viewList.setAlpha(0);
                                    viewList.setVisibility(View.VISIBLE);
                                    viewList.animate().setDuration(100)
                                            .alpha(1.0f).start();
                                }
                            }).start();
                } else {
                    mShowingHistoryPanel = false;
                    viewList.setVisibility(View.INVISIBLE);
                    view.animate().setDuration(200).x(0).withLayer()
                            .withEndAction(new Runnable() {
                                public void run() {
                                    lp.x = 0;
                                    view.setLayoutParams(lp);
                                }
                            }).start();

                }
            }
        };
    }

    // reset button in the history panel.
    private OnClickListener createOnClickResetOperationsButton() {
        return new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                HistoryAdapter adapter = (HistoryAdapter) mImageShow
                        .getListAdapter();
                adapter.reset();
                ImagePreset original = new ImagePreset(adapter.getItem(0));
                mImageShow.setImagePreset(original);
                invalidateViews();
            }
        };
    }

    // //////////////////////////////////////////////////////////////////////////////
    // Now, let's deal with the bottom panel.

    private OnClickListener createOnClickFxButton() {
        return new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                hideImageViews();
                hideListViews();
                unselectBottomPanelButtons();
                mImageShow.setVisibility(View.VISIBLE);
                mListFx.setVisibility(View.VISIBLE);
                mFxButton.setSelected(true);
            }
        };
    }

    private OnClickListener createOnClickBorderButton() {
        return new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                hideImageViews();
                hideListViews();
                unselectBottomPanelButtons();
                mImageBorders.setVisibility(View.VISIBLE);
                mListBorders.setVisibility(View.VISIBLE);
                mBorderButton.setSelected(true);
            }
        };
    }

    private OnClickListener createOnClickGeometryButton() {
        return new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                hideImageViews();
                hideListViews();
                unselectBottomPanelButtons();
                mImageStraighten.setVisibility(View.VISIBLE);
                mListGeometry.setVisibility(View.VISIBLE);
                mGeometryButton.setSelected(true);

                if (ANIMATE_PANELS) {
                    mListGeometry.setX(mListGeometry.getWidth());
                    mListGeometry.animate().setDuration(200).x(0).withLayer().start();
                }
            }
        };
    }

    private OnClickListener createOnClickColorsButton() {
        return new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                hideImageViews();
                hideListViews();
                unselectBottomPanelButtons();
                mListColors.setVisibility(View.VISIBLE);
                mImageCurves.setVisibility(View.VISIBLE);
                mColorsButton.setSelected(true);

                if (ANIMATE_PANELS) {
                    View view = findViewById(R.id.listColorsFx);
                    view.setX(mListColors.getWidth());
                    view.animate().setDuration(200).x(0).withLayer().start();
                }
            }
        };
    }

    // //////////////////////////////////////////////////////////////////////////////
    // Geometry sub-panel

    private OnClickListener createOnClickStraightenButton() {
        return new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                hideImageViews();
                mImageStraighten.setVisibility(View.VISIBLE);
                mImageStraighten.showToast("Straighten", true);
            }
        };
    }

    private OnClickListener createOnClickCropButton() {
        return new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                hideImageViews();
                mImageShow.setVisibility(View.VISIBLE);
                mImageShow.showToast("Crop", true);
            }
        };
    }

    private OnClickListener createOnClickRotateButton() {
        return new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                hideImageViews();
                mImageShow.setVisibility(View.VISIBLE);
                mImageShow.showToast("Rotate", true);
            }
        };
    }

    private OnClickListener createOnClickFlipButton() {
        return new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                hideImageViews();
                mImageShow.setVisibility(View.VISIBLE);
                mImageShow.showToast("Flip", true);
            }
        };
    }

    // //////////////////////////////////////////////////////////////////////////////
    // Filters sub-panel

    private OnClickListener createOnClickVignetteButton() {
        return new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                hideImageViews();
                mImageShow.setVisibility(View.VISIBLE);
                mImageShow.setShowControls(true);
                ImagePreset preset = mImageShow.getImagePreset();
                ImageFilter filter = preset.getFilter("Vignette");
                if (filter == null) {
                    ImageFilterVignette vignette = new ImageFilterVignette();
                    ImagePreset copy = new ImagePreset(preset);
                    copy.add(vignette);
                    copy.setHistoryName(vignette.name());
                    copy.setIsFx(false);
                    mImageShow.setImagePreset(copy);
                }
                unselectPanelButtons(mColorsPanelButtons);
                mVignetteButton.setSelected(true);
                invalidateViews();
            }
        };
    }

    private OnClickListener createOnClickCurvesRGBButton() {
        return new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                hideImageViews();
                mImageCurves.setVisibility(View.VISIBLE);
                unselectPanelButtons(mColorsPanelButtons);
                mCurvesButtonRGB.setSelected(true);
                mImageCurves.setUseRed(true);
                mImageCurves.setUseGreen(true);
                mImageCurves.setUseBlue(true);
                mImageCurves.reloadCurve();
            }
        };
    }

    private OnClickListener createOnClickCurvesRedButton() {
        return new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                hideImageViews();
                mImageCurves.setVisibility(View.VISIBLE);
                unselectPanelButtons(mColorsPanelButtons);
                mCurvesButtonRed.setSelected(true);
                mImageCurves.setUseRed(true);
                mImageCurves.setUseGreen(false);
                mImageCurves.setUseBlue(false);
                mImageCurves.reloadCurve();
            }
        };
    }

    private OnClickListener createOnClickCurvesGreenButton() {
        return new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                hideImageViews();
                mImageCurves.setVisibility(View.VISIBLE);
                unselectPanelButtons(mColorsPanelButtons);
                mCurvesButtonGreen.setSelected(true);
                mImageCurves.setUseRed(false);
                mImageCurves.setUseGreen(true);
                mImageCurves.setUseBlue(false);
                mImageCurves.reloadCurve();
            }
        };
    }

    private OnClickListener createOnClickCurvesBlueButton() {
        return new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                hideImageViews();
                mImageCurves.setVisibility(View.VISIBLE);
                unselectPanelButtons(mColorsPanelButtons);
                mCurvesButtonBlue.setSelected(true);
                mImageCurves.setUseRed(false);
                mImageCurves.setUseGreen(false);
                mImageCurves.setUseBlue(true);
                mImageCurves.reloadCurve();
            }
        };
    }

    private OnClickListener createOnClickSharpenButton() {
        return new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                hideImageViews();
                mImageShow.setVisibility(View.VISIBLE);
                unselectPanelButtons(mColorsPanelButtons);
                mSharpenButton.setSelected(true);
                mImageShow.showToast("Sharpen", true);
            }
        };
    }

    private OnClickListener createOnClickContrastButton() {
        return new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                hideImageViews();
                mImageShow.setVisibility(View.VISIBLE);
                unselectPanelButtons(mColorsPanelButtons);
                mContrastButton.setSelected(true);
                mImageShow.showToast("Contrast", true);
            }
        };
    }

    // //////////////////////////////////////////////////////////////////////////////

    public float getPixelsFromDip(float value) {
        Resources r = getResources();
        return TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, value,
                r.getDisplayMetrics());
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.filtershow_activity_menu, menu);
        return true;
    }

    public void useImagePreset(ImagePreset preset) {
        if (preset == null) {
            return;
        }
        ImagePreset copy = new ImagePreset(preset);
        mImageShow.setImagePreset(copy);
        if (preset.isFx()) {
            // if it's an FX we rest the curve adjustment too
            mImageCurves.resetCurve();
        }
        invalidateViews();
    }

    public void useImageFilter(ImageFilter imageFilter) {
        if (imageFilter == null) {
            return;
        }
        ImagePreset oldPreset = mImageShow.getImagePreset();
        ImagePreset copy = new ImagePreset(oldPreset);
        // TODO: use a numerical constant instead.
        if (imageFilter.name().equalsIgnoreCase("Border")) {
            copy.remove("Border");
            copy.setHistoryName("Border");
        }
        copy.add(imageFilter);
        invalidateViews();
    }

    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position,
            long id) {
        mImageShow.onItemClick(position);
        invalidateViews();
    }

    public void pickImage() {
        Intent intent = new Intent();
        intent.setType("image/*");
        intent.setAction(Intent.ACTION_GET_CONTENT);
        startActivityForResult(Intent.createChooser(intent, getString(R.string.select_image)),
                SELECT_PICTURE);
    }

    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        Log.v(LOGTAG, "onActivityResult");
        if (resultCode == RESULT_OK) {
            if (requestCode == SELECT_PICTURE) {
                Uri selectedImageUri = data.getData();
                mImageLoader.loadBitmap(selectedImageUri);
            }
        }
    }

    public void saveImage() {
        Toast toast = Toast.makeText(getBaseContext(), getString(R.string.saving_image),
                Toast.LENGTH_SHORT);
        toast.setGravity(Gravity.CENTER, 0, 0);
        toast.show();

        mImageShow.saveImage(this);
    }

    public void completeSaveImage(Uri saveUri) {
        setResult(RESULT_OK, new Intent().setData(saveUri));
        finish();
    }

    static {
        System.loadLibrary("filters");
    }

}