diff options
Diffstat (limited to 'vdrmanager/src/com/viewpagerindicator/TitlePageIndicator.java')
| -rw-r--r-- | vdrmanager/src/com/viewpagerindicator/TitlePageIndicator.java | 672 |
1 files changed, 0 insertions, 672 deletions
diff --git a/vdrmanager/src/com/viewpagerindicator/TitlePageIndicator.java b/vdrmanager/src/com/viewpagerindicator/TitlePageIndicator.java deleted file mode 100644 index c04f5ed..0000000 --- a/vdrmanager/src/com/viewpagerindicator/TitlePageIndicator.java +++ /dev/null @@ -1,672 +0,0 @@ -/* - * Copyright (C) 2011 Patrik Akerfeldt - * Copyright (C) 2011 Francisco Figueiredo Jr. - * Copyright (C) 2011 Jake Wharton - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -package com.viewpagerindicator; - -import java.util.ArrayList; - -import de.bjusystems.vdrmanager.R; -import android.content.Context; -import android.content.res.Resources; -import android.content.res.TypedArray; -import android.graphics.Canvas; -import android.graphics.Paint; -import android.graphics.Path; -import android.graphics.RectF; -import android.os.Parcel; -import android.os.Parcelable; -import android.support.v4.view.ViewPager; -import android.util.AttributeSet; -import android.view.MotionEvent; -import android.view.View; - -/** - * A TitlePageIndicator is a PageIndicator which displays the title of left view - * (if exist), the title of the current select view (centered) and the title of - * the right view (if exist). When the user scrolls the ViewPager then titles are - * also scrolled. - */ -public class TitlePageIndicator extends View implements PageIndicator { - /** - * Percentage indicating what percentage of the screen width away from - * center should the underline be fully faded. A value of 0.25 means that - * halfway between the center of the screen and an edge. - */ - private static final float SELECTION_FADE_PERCENTAGE = 0.25f; - - /** - * Percentage indicating what percentage of the screen width away from - * center should the selected text bold turn off. A value of 0.05 means - * that 10% between the center and an edge. - */ - private static final float BOLD_FADE_PERCENTAGE = 0.05f; - - public enum IndicatorStyle { - None(0), Triangle(1), Underline(2); - - public final int value; - - private IndicatorStyle(int value) { - this.value = value; - } - - public static IndicatorStyle fromValue(int value) { - for (IndicatorStyle style : IndicatorStyle.values()) { - if (style.value == value) { - return style; - } - } - return null; - } - } - - private ViewPager mViewPager; - private ViewPager.OnPageChangeListener mListener; - private TitleProvider mTitleProvider; - private int mCurrentPage; - private int mCurrentOffset; - private int mScrollState; - private final Paint mPaintText; - private boolean mBoldText; - private int mColorText; - private int mColorSelected; - private Path mPath; - private final Paint mPaintFooterLine; - private IndicatorStyle mFooterIndicatorStyle; - private final Paint mPaintFooterIndicator; - private float mFooterIndicatorHeight; - private float mFooterIndicatorUnderlinePadding; - private float mFooterPadding; - private float mTitlePadding; - private float mTopPadding; - /** Left and right side padding for not active view titles. */ - private float mClipPadding; - private float mFooterLineHeight; - - - public TitlePageIndicator(Context context) { - this(context, null); - } - - public TitlePageIndicator(Context context, AttributeSet attrs) { - this(context, attrs, R.attr.titlePageIndicatorStyle); - } - - public TitlePageIndicator(Context context, AttributeSet attrs, int defStyle) { - super(context, attrs, defStyle); - - //Load defaults from resources - final Resources res = getResources(); - final int defaultFooterColor = res.getColor(R.color.default_title_indicator_footer_color); - final float defaultFooterLineHeight = res.getDimension(R.dimen.default_title_indicator_footer_line_height); - final int defaultFooterIndicatorStyle = res.getInteger(R.integer.default_title_indicator_footer_indicator_style); - final float defaultFooterIndicatorHeight = res.getDimension(R.dimen.default_title_indicator_footer_indicator_height); - final float defaultFooterIndicatorUnderlinePadding = res.getDimension(R.dimen.default_title_indicator_footer_indicator_underline_padding); - final float defaultFooterPadding = res.getDimension(R.dimen.default_title_indicator_footer_padding); - final int defaultSelectedColor = res.getColor(R.color.default_title_indicator_selected_color); - final boolean defaultSelectedBold = res.getBoolean(R.bool.default_title_indicator_selected_bold); - final int defaultTextColor = res.getColor(R.color.default_title_indicator_text_color); - final float defaultTextSize = res.getDimension(R.dimen.default_title_indicator_text_size); - final float defaultTitlePadding = res.getDimension(R.dimen.default_title_indicator_title_padding); - final float defaultClipPadding = res.getDimension(R.dimen.default_title_indicator_clip_padding); - final float defaultTopPadding = res.getDimension(R.dimen.default_title_indicator_top_padding); - - //Retrieve styles attributes - TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.TitlePageIndicator, defStyle, R.style.Widget_TitlePageIndicator); - - //Retrieve the colors to be used for this view and apply them. - mFooterLineHeight = a.getDimension(R.styleable.TitlePageIndicator_footerLineHeight, defaultFooterLineHeight); - mFooterIndicatorStyle = IndicatorStyle.fromValue(a.getInteger(R.styleable.TitlePageIndicator_footerIndicatorStyle, defaultFooterIndicatorStyle)); - mFooterIndicatorHeight = a.getDimension(R.styleable.TitlePageIndicator_footerIndicatorHeight, defaultFooterIndicatorHeight); - mFooterIndicatorUnderlinePadding = a.getDimension(R.styleable.TitlePageIndicator_footerIndicatorUnderlinePadding, defaultFooterIndicatorUnderlinePadding); - mFooterPadding = a.getDimension(R.styleable.TitlePageIndicator_footerPadding, defaultFooterPadding); - mTopPadding = a.getDimension(R.styleable.TitlePageIndicator_topPadding, defaultTopPadding); - mTitlePadding = a.getDimension(R.styleable.TitlePageIndicator_titlePadding, defaultTitlePadding); - mClipPadding = a.getDimension(R.styleable.TitlePageIndicator_clipPadding, defaultClipPadding); - mColorSelected = a.getColor(R.styleable.TitlePageIndicator_selectedColor, defaultSelectedColor); - mColorText = a.getColor(R.styleable.TitlePageIndicator_textColor, defaultTextColor); - mBoldText = a.getBoolean(R.styleable.TitlePageIndicator_selectedBold, defaultSelectedBold); - - final float textSize = a.getDimension(R.styleable.TitlePageIndicator_textSize, defaultTextSize); - final int footerColor = a.getColor(R.styleable.TitlePageIndicator_footerColor, defaultFooterColor); - mPaintText = new Paint(); - mPaintText.setTextSize(textSize); - mPaintText.setAntiAlias(true); - mPaintFooterLine = new Paint(); - mPaintFooterLine.setStyle(Paint.Style.FILL_AND_STROKE); - mPaintFooterLine.setStrokeWidth(mFooterLineHeight); - mPaintFooterLine.setColor(footerColor); - mPaintFooterIndicator = new Paint(); - mPaintFooterIndicator.setStyle(Paint.Style.FILL_AND_STROKE); - mPaintFooterIndicator.setColor(footerColor); - - a.recycle(); - } - - - public int getFooterColor() { - return mPaintFooterLine.getColor(); - } - - public void setFooterColor(int footerColor) { - mPaintFooterLine.setColor(footerColor); - mPaintFooterIndicator.setColor(footerColor); - invalidate(); - } - - public float getFooterLineHeight() { - return mFooterLineHeight; - } - - public void setFooterLineHeight(float footerLineHeight) { - mFooterLineHeight = footerLineHeight; - mPaintFooterLine.setStrokeWidth(mFooterLineHeight); - invalidate(); - } - - public float getFooterIndicatorHeight() { - return mFooterIndicatorHeight; - } - - public void setFooterIndicatorHeight(float footerTriangleHeight) { - mFooterIndicatorHeight = footerTriangleHeight; - invalidate(); - } - - public float getFooterIndicatorPadding() { - return mFooterPadding; - } - - public void setFooterIndicatorPadding(float footerIndicatorPadding) { - mFooterPadding = footerIndicatorPadding; - invalidate(); - } - - public IndicatorStyle getFooterIndicatorStyle() { - return mFooterIndicatorStyle; - } - - public void setFooterIndicatorStyle(IndicatorStyle indicatorStyle) { - mFooterIndicatorStyle = indicatorStyle; - invalidate(); - } - - public int getSelectedColor() { - return mColorSelected; - } - - public void setSelectedColor(int selectedColor) { - mColorSelected = selectedColor; - invalidate(); - } - - public boolean isSelectedBold() { - return mBoldText; - } - - public void setSelectedBold(boolean selectedBold) { - mBoldText = selectedBold; - invalidate(); - } - - public int getTextColor() { - return mColorText; - } - - public void setTextColor(int textColor) { - mPaintText.setColor(textColor); - mColorText = textColor; - invalidate(); - } - - public float getTextSize() { - return mPaintText.getTextSize(); - } - - public void setTextSize(float textSize) { - mPaintText.setTextSize(textSize); - invalidate(); - } - - public float getTitlePadding() { - return this.mTitlePadding; - } - - public void setTitlePadding(float titlePadding) { - mTitlePadding = titlePadding; - invalidate(); - } - - public float getTopPadding() { - return this.mTopPadding; - } - - public void setTopPadding(float topPadding) { - mTopPadding = topPadding; - invalidate(); - } - - public float getClipPadding() { - return this.mClipPadding; - } - - public void setClipPadding(float clipPadding) { - mClipPadding = clipPadding; - invalidate(); - } - - /* - * (non-Javadoc) - * - * @see android.view.View#onDraw(android.graphics.Canvas) - */ - @Override - protected void onDraw(Canvas canvas) { - super.onDraw(canvas); - - //Calculate views bounds - ArrayList<RectF> bounds = calculateAllBounds(mPaintText); - - final int count = mViewPager.getAdapter().getCount(); - final int countMinusOne = count - 1; - final float halfWidth = getWidth() / 2f; - final int left = getLeft(); - final float leftClip = left + mClipPadding; - final int width = getWidth(); - final int height = getHeight(); - final int right = left + width; - final float rightClip = right - mClipPadding; - - int page = mCurrentPage; - float offsetPercent; - if (mCurrentOffset <= halfWidth) { - offsetPercent = 1.0f * mCurrentOffset / width; - } else { - page += 1; - offsetPercent = 1.0f * (width - mCurrentOffset) / width; - } - final boolean currentSelected = (offsetPercent <= SELECTION_FADE_PERCENTAGE); - final boolean currentBold = (offsetPercent <= BOLD_FADE_PERCENTAGE); - final float selectedPercent = (SELECTION_FADE_PERCENTAGE - offsetPercent) / SELECTION_FADE_PERCENTAGE; - - //Verify if the current view must be clipped to the screen - RectF curPageBound = bounds.get(mCurrentPage); - float curPageWidth = curPageBound.right - curPageBound.left; - if (curPageBound.left < leftClip) { - //Try to clip to the screen (left side) - clipViewOnTheLeft(curPageBound, curPageWidth, left); - } - if (curPageBound.right > rightClip) { - //Try to clip to the screen (right side) - clipViewOnTheRight(curPageBound, curPageWidth, right); - } - - //Left views starting from the current position - if (mCurrentPage > 0) { - for (int i = mCurrentPage - 1; i >= 0; i--) { - RectF bound = bounds.get(i); - //Is left side is outside the screen - if (bound.left < leftClip) { - float w = bound.right - bound.left; - //Try to clip to the screen (left side) - clipViewOnTheLeft(bound, w, left); - //Except if there's an intersection with the right view - RectF rightBound = bounds.get(i + 1); - //Intersection - if (bound.right + mTitlePadding > rightBound.left) { - bound.left = rightBound.left - w - mTitlePadding; - bound.right = bound.left + w; - } - } - } - } - //Right views starting from the current position - if (mCurrentPage < countMinusOne) { - for (int i = mCurrentPage + 1 ; i < count; i++) { - RectF bound = bounds.get(i); - //If right side is outside the screen - if (bound.right > rightClip) { - float w = bound.right - bound.left; - //Try to clip to the screen (right side) - clipViewOnTheRight(bound, w, right); - //Except if there's an intersection with the left view - RectF leftBound = bounds.get(i - 1); - //Intersection - if (bound.left - mTitlePadding < leftBound.right) { - bound.left = leftBound.right + mTitlePadding; - bound.right = bound.left + w; - } - } - } - } - - //Now draw views - for (int i = 0; i < count; i++) { - //Get the title - RectF bound = bounds.get(i); - //Only if one side is visible - if ((bound.left > left && bound.left < right) || (bound.right > left && bound.right < right)) { - final boolean currentPage = (i == page); - //Only set bold if we are within bounds - mPaintText.setFakeBoldText(currentPage && currentBold && mBoldText); - - //Draw text as unselected - mPaintText.setColor(mColorText); - canvas.drawText(mTitleProvider.getTitle(i), bound.left, bound.bottom + mTopPadding, mPaintText); - - //If we are within the selected bounds draw the selected text - if (currentPage && currentSelected) { - mPaintText.setColor(mColorSelected); - mPaintText.setAlpha((int)((mColorSelected >>> 24) * selectedPercent)); - canvas.drawText(mTitleProvider.getTitle(i), bound.left, bound.bottom + mTopPadding, mPaintText); - } - } - } - - //Draw the footer line - mPath = new Path(); - mPath.moveTo(0, height - mFooterLineHeight / 2f); - mPath.lineTo(width, height - mFooterLineHeight / 2f); - mPath.close(); - canvas.drawPath(mPath, mPaintFooterLine); - - switch (mFooterIndicatorStyle) { - case Triangle: - mPath = new Path(); - mPath.moveTo(halfWidth, height - mFooterLineHeight - mFooterIndicatorHeight); - mPath.lineTo(halfWidth + mFooterIndicatorHeight, height - mFooterLineHeight); - mPath.lineTo(halfWidth - mFooterIndicatorHeight, height - mFooterLineHeight); - mPath.close(); - canvas.drawPath(mPath, mPaintFooterIndicator); - break; - - case Underline: - if (!currentSelected) { - break; - } - - RectF underlineBounds = bounds.get(page); - mPath = new Path(); - mPath.moveTo(underlineBounds.left - mFooterIndicatorUnderlinePadding, height - mFooterLineHeight); - mPath.lineTo(underlineBounds.right + mFooterIndicatorUnderlinePadding, height - mFooterLineHeight); - mPath.lineTo(underlineBounds.right + mFooterIndicatorUnderlinePadding, height - mFooterLineHeight - mFooterIndicatorHeight); - mPath.lineTo(underlineBounds.left - mFooterIndicatorUnderlinePadding, height - mFooterLineHeight - mFooterIndicatorHeight); - mPath.close(); - - mPaintFooterIndicator.setAlpha((int)(0xFF * selectedPercent)); - canvas.drawPath(mPath, mPaintFooterIndicator); - mPaintFooterIndicator.setAlpha(0xFF); - break; - } - } - - @Override - public boolean onTouchEvent(MotionEvent event) { - if (event.getAction() == MotionEvent.ACTION_DOWN) { - final int count = mViewPager.getAdapter().getCount(); - final int width = getWidth(); - final float halfWidth = width / 2f; - final float sixthWidth = width / 6f; - - if ((mCurrentPage > 0) && (event.getX() < halfWidth - sixthWidth)) { - mViewPager.setCurrentItem(mCurrentPage - 1); - return true; - } else if ((mCurrentPage < count - 1) && (event.getX() > halfWidth + sixthWidth)) { - mViewPager.setCurrentItem(mCurrentPage + 1); - return true; - } - } - - return super.onTouchEvent(event); - } - - /** - * Set bounds for the right textView including clip padding. - * - * @param curViewBound - * current bounds. - * @param curViewWidth - * width of the view. - */ - private void clipViewOnTheRight(RectF curViewBound, float curViewWidth, int right) { - curViewBound.right = right - mClipPadding; - curViewBound.left = curViewBound.right - curViewWidth; - } - - /** - * Set bounds for the left textView including clip padding. - * - * @param curViewBound - * current bounds. - * @param curViewWidth - * width of the view. - */ - private void clipViewOnTheLeft(RectF curViewBound, float curViewWidth, int left) { - curViewBound.left = left + mClipPadding; - curViewBound.right = mClipPadding + curViewWidth; - } - - /** - * Calculate views bounds and scroll them according to the current index - * - * @param paint - * @param currentIndex - * @return - */ - private ArrayList<RectF> calculateAllBounds(Paint paint) { - ArrayList<RectF> list = new ArrayList<RectF>(); - //For each views (If no values then add a fake one) - final int count = mViewPager.getAdapter().getCount(); - final int width = getWidth(); - final int halfWidth = width / 2; - for (int i = 0; i < count; i++) { - RectF bounds = calcBounds(i, paint); - float w = (bounds.right - bounds.left); - float h = (bounds.bottom - bounds.top); - bounds.left = (halfWidth) - (w / 2) - mCurrentOffset + ((i - mCurrentPage) * width); - bounds.right = bounds.left + w; - bounds.top = 0; - bounds.bottom = h; - list.add(bounds); - } - - return list; - } - - /** - * Calculate the bounds for a view's title - * - * @param index - * @param paint - * @return - */ - private RectF calcBounds(int index, Paint paint) { - //Calculate the text bounds - RectF bounds = new RectF(); - bounds.right = paint.measureText(mTitleProvider.getTitle(index)); - bounds.bottom = paint.descent() - paint.ascent(); - return bounds; - } - - - public void setViewPager(ViewPager view) { - if (view.getAdapter() == null) { - throw new IllegalStateException("ViewPager does not have adapter instance."); - } - if (!(view.getAdapter() instanceof TitleProvider)) { - throw new IllegalStateException("ViewPager adapter must implement TitleProvider to be used with TitlePageIndicator."); - } - mViewPager = view; - mViewPager.setOnPageChangeListener(this); - mTitleProvider = (TitleProvider)mViewPager.getAdapter(); - invalidate(); - } - - - public void setViewPager(ViewPager view, int initialPosition) { - setViewPager(view); - setCurrentItem(initialPosition); - } - - - public void setCurrentItem(int item) { - if (mViewPager == null) { - throw new IllegalStateException("ViewPager has not been bound."); - } - mViewPager.setCurrentItem(item); - mCurrentPage = item; - invalidate(); - } - - public void onPageScrollStateChanged(int state) { - mScrollState = state; - - if (mListener != null) { - mListener.onPageScrollStateChanged(state); - } - } - - - public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) { - mCurrentPage = position; - mCurrentOffset = positionOffsetPixels; - invalidate(); - - if (mListener != null) { - mListener.onPageScrolled(position, positionOffset, positionOffsetPixels); - } - } - - - public void onPageSelected(int position) { - if (mScrollState == ViewPager.SCROLL_STATE_IDLE) { - mCurrentPage = position; - invalidate(); - } - - if (mListener != null) { - mListener.onPageSelected(position); - } - } - - public void setOnPageChangeListener(ViewPager.OnPageChangeListener listener) { - mListener = listener; - } - - /* - * (non-Javadoc) - * - * @see android.view.View#onMeasure(int, int) - */ - @Override - protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { - setMeasuredDimension(measureWidth(widthMeasureSpec), measureHeight(heightMeasureSpec)); - } - - /** - * Determines the width of this view - * - * @param measureSpec - * A measureSpec packed into an int - * @return The width of the view, honoring constraints from measureSpec - */ - private int measureWidth(int measureSpec) { - int result = 0; - int specMode = MeasureSpec.getMode(measureSpec); - int specSize = MeasureSpec.getSize(measureSpec); - - if (specMode != MeasureSpec.EXACTLY) { - throw new IllegalStateException(getClass().getSimpleName() + " can only be used in EXACTLY mode."); - } - result = specSize; - return result; - } - - /** - * Determines the height of this view - * - * @param measureSpec - * A measureSpec packed into an int - * @return The height of the view, honoring constraints from measureSpec - */ - private int measureHeight(int measureSpec) { - float result = 0; - int specMode = MeasureSpec.getMode(measureSpec); - int specSize = MeasureSpec.getSize(measureSpec); - - if (specMode == MeasureSpec.EXACTLY) { - //We were told how big to be - result = specSize; - } else { - //Calculate the text bounds - RectF bounds = new RectF(); - bounds.bottom = mPaintText.descent()-mPaintText.ascent(); - result = bounds.bottom - bounds.top + mFooterLineHeight + mFooterPadding + mTopPadding; - if (mFooterIndicatorStyle != IndicatorStyle.None) { - result += mFooterIndicatorHeight; - } - } - return (int)result; - } - - @Override - public void onRestoreInstanceState(Parcelable state) { - SavedState savedState = (SavedState)state; - super.onRestoreInstanceState(savedState.getSuperState()); - mCurrentPage = savedState.currentPage; - requestLayout(); - } - - @Override - public Parcelable onSaveInstanceState() { - Parcelable superState = super.onSaveInstanceState(); - SavedState savedState = new SavedState(superState); - savedState.currentPage = mCurrentPage; - return savedState; - } - - static class SavedState extends BaseSavedState { - int currentPage; - - public SavedState(Parcelable superState) { - super(superState); - } - - private SavedState(Parcel in) { - super(in); - currentPage = in.readInt(); - } - - @Override - public void writeToParcel(Parcel dest, int flags) { - super.writeToParcel(dest, flags); - dest.writeInt(currentPage); - } - - public static final Parcelable.Creator<SavedState> CREATOR = new Parcelable.Creator<SavedState>() { - - public SavedState createFromParcel(Parcel in) { - return new SavedState(in); - } - - - public SavedState[] newArray(int size) { - return new SavedState[size]; - } - }; - } -} |