List of usage examples for android.graphics Canvas drawText
public void drawText(@NonNull CharSequence text, int start, int end, float x, float y, @NonNull Paint paint)
From source file:android_hddl_framework.viewpagerindicator.TitlePageIndicator.java
@Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); if (mViewPager == null) { return;//from w ww .j a va2 s .co m } final int count = mViewPager.getAdapter().getCount(); if (count == 0) { return; } // mCurrentPage is -1 on first start and after orientation changed. If so, retrieve the correct index from viewpager. if (mCurrentPage == -1 && mViewPager != null) { mCurrentPage = mViewPager.getCurrentItem(); } //Calculate views bounds ArrayList<Rect> bounds = calculateAllBounds(mPaintText); final int boundsSize = bounds.size(); //Make sure we're on a page that still exists if (mCurrentPage >= boundsSize) { setCurrentItem(boundsSize - 1); return; } final int countMinusOne = count - 1; final float halfWidth = getWidth() / 2f; final int left = getLeft(); final float leftClip = left + mClipPadding; final int width = getWidth(); int height = getHeight(); final int right = left + width; final float rightClip = right - mClipPadding; int page = mCurrentPage; float offsetPercent; if (mPageOffset <= 0.5) { offsetPercent = mPageOffset; } else { page += 1; offsetPercent = 1 - mPageOffset; } 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 Rect 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--) { Rect bound = bounds.get(i); //Is left side is outside the screen if (bound.left < leftClip) { int 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 Rect rightBound = bounds.get(i + 1); //Intersection if (bound.right + mTitlePadding > rightBound.left) { bound.left = (int) (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++) { Rect bound = bounds.get(i); //If right side is outside the screen if (bound.right > rightClip) { int 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 Rect leftBound = bounds.get(i - 1); //Intersection if (bound.left - mTitlePadding < leftBound.right) { bound.left = (int) (leftBound.right + mTitlePadding); bound.right = bound.left + w; } } } } //Now draw views int colorTextAlpha = mColorText >>> 24; for (int i = 0; i < count; i++) { //Get the title Rect 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); final CharSequence pageTitle = getTitle(i); //Only set bold if we are within bounds mPaintText.setFakeBoldText(currentPage && currentBold && mBoldText); //Draw text as unselected mPaintText.setColor(mColorText); if (currentPage && currentSelected) { //Fade out/in unselected text as the selected text fades in/out mPaintText.setAlpha(colorTextAlpha - (int) (colorTextAlpha * selectedPercent)); } //Except if there's an intersection with the right view if (i < boundsSize - 1) { Rect rightBound = bounds.get(i + 1); //Intersection if (bound.right + mTitlePadding > rightBound.left) { int w = bound.right - bound.left; bound.left = (int) (rightBound.left - w - mTitlePadding); bound.right = bound.left + w; } } canvas.drawText(pageTitle, 0, pageTitle.length(), 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(pageTitle, 0, pageTitle.length(), bound.left, bound.bottom + mTopPadding, mPaintText); } } } //If we want the line on the top change height to zero and invert the line height to trick the drawing code float footerLineHeight = mFooterLineHeight; float footerIndicatorLineHeight = mFooterIndicatorHeight; if (mLinePosition == LinePosition.Top) { height = 0; footerLineHeight = -footerLineHeight; footerIndicatorLineHeight = -footerIndicatorLineHeight; } //Draw the footer line mPath.reset(); mPath.moveTo(0, height - footerLineHeight / 2f); mPath.lineTo(width, height - footerLineHeight / 2f); mPath.close(); canvas.drawPath(mPath, mPaintFooterLine); float heightMinusLine = height - footerLineHeight; switch (mFooterIndicatorStyle) { case Triangle: mPath.reset(); mPath.moveTo(halfWidth, heightMinusLine - footerIndicatorLineHeight); mPath.lineTo(halfWidth + footerIndicatorLineHeight, heightMinusLine); mPath.lineTo(halfWidth - footerIndicatorLineHeight, heightMinusLine); mPath.close(); canvas.drawPath(mPath, mPaintFooterIndicator); break; case Underline: if (!currentSelected || page >= boundsSize) { break; } Rect underlineBounds = bounds.get(page); final float rightPlusPadding = underlineBounds.right + mFooterIndicatorUnderlinePadding; final float leftMinusPadding = underlineBounds.left - mFooterIndicatorUnderlinePadding; final float heightMinusLineMinusIndicator = heightMinusLine - footerIndicatorLineHeight; mPath.reset(); mPath.moveTo(leftMinusPadding, heightMinusLine); mPath.lineTo(rightPlusPadding, heightMinusLine); mPath.lineTo(rightPlusPadding, heightMinusLineMinusIndicator); mPath.lineTo(leftMinusPadding, heightMinusLineMinusIndicator); mPath.close(); mPaintFooterIndicator.setAlpha((int) (0xFF * selectedPercent)); canvas.drawPath(mPath, mPaintFooterIndicator); mPaintFooterIndicator.setAlpha(0xFF); break; } }
From source file:com.jcertif.mdomotique.ihm.adabter.TitlePageIndicator.java
@SuppressWarnings("incomplete-switch") @Override//from w w w . java2s . co m protected void onDraw(Canvas canvas) { super.onDraw(canvas); if (mViewPager == null) { return; } final int count = mViewPager.getAdapter().getCount(); if (count == 0) { return; } // mCurrentPage is -1 on first start and after orientation changed. If so, retrieve the correct index from viewpager. if (mCurrentPage == -1 && mViewPager != null) { mCurrentPage = mViewPager.getCurrentItem(); } //Calculate views bounds ArrayList<Rect> bounds = calculateAllBounds(mPaintText); final int boundsSize = bounds.size(); //Make sure we're on a page that still exists if (mCurrentPage >= boundsSize) { setCurrentItem(boundsSize - 1); return; } final int countMinusOne = count - 1; final float halfWidth = getWidth() / 2f; final int left = getLeft(); final float leftClip = left + mClipPadding; final int width = getWidth(); int height = getHeight(); final int right = left + width; final float rightClip = right - mClipPadding; int page = mCurrentPage; float offsetPercent; if (mPageOffset <= 0.5) { offsetPercent = mPageOffset; } else { page += 1; offsetPercent = 1 - mPageOffset; } 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 Rect 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--) { Rect bound = bounds.get(i); //Is left side is outside the screen if (bound.left < leftClip) { int 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 Rect rightBound = bounds.get(i + 1); //Intersection if (bound.right + mTitlePadding > rightBound.left) { bound.left = (int) (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++) { Rect bound = bounds.get(i); //If right side is outside the screen if (bound.right > rightClip) { int 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 Rect leftBound = bounds.get(i - 1); //Intersection if (bound.left - mTitlePadding < leftBound.right) { bound.left = (int) (leftBound.right + mTitlePadding); bound.right = bound.left + w; } } } } //Now draw views int colorTextAlpha = mColorText >>> 24; for (int i = 0; i < count; i++) { //Get the title Rect 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); final CharSequence pageTitle = getTitle(i); //Only set bold if we are within bounds mPaintText.setFakeBoldText(currentPage && currentBold && mBoldText); //Draw text as unselected mPaintText.setColor(mColorText); if (currentPage && currentSelected) { //Fade out/in unselected text as the selected text fades in/out mPaintText.setAlpha(colorTextAlpha - (int) (colorTextAlpha * selectedPercent)); } //Except if there's an intersection with the right view if (i < boundsSize - 1) { Rect rightBound = bounds.get(i + 1); //Intersection if (bound.right + mTitlePadding > rightBound.left) { int w = bound.right - bound.left; bound.left = (int) (rightBound.left - w - mTitlePadding); bound.right = bound.left + w; } } canvas.drawText(pageTitle, 0, pageTitle.length(), 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(pageTitle, 0, pageTitle.length(), bound.left, bound.bottom + mTopPadding, mPaintText); } } } //If we want the line on the top change height to zero and invert the line height to trick the drawing code float footerLineHeight = mFooterLineHeight; float footerIndicatorLineHeight = mFooterIndicatorHeight; if (mLinePosition == LinePosition.Top) { height = 0; footerLineHeight = -footerLineHeight; footerIndicatorLineHeight = -footerIndicatorLineHeight; } //Draw the footer line mPath.reset(); mPath.moveTo(0, height - footerLineHeight / 2f); mPath.lineTo(width, height - footerLineHeight / 2f); mPath.close(); canvas.drawPath(mPath, mPaintFooterLine); float heightMinusLine = height - footerLineHeight; switch (mFooterIndicatorStyle) { case Triangle: mPath.reset(); mPath.moveTo(halfWidth, heightMinusLine - footerIndicatorLineHeight); mPath.lineTo(halfWidth + footerIndicatorLineHeight, heightMinusLine); mPath.lineTo(halfWidth - footerIndicatorLineHeight, heightMinusLine); mPath.close(); canvas.drawPath(mPath, mPaintFooterIndicator); break; case Underline: if (!currentSelected || page >= boundsSize) { break; } Rect underlineBounds = bounds.get(page); final float rightPlusPadding = underlineBounds.right + mFooterIndicatorUnderlinePadding; final float leftMinusPadding = underlineBounds.left - mFooterIndicatorUnderlinePadding; final float heightMinusLineMinusIndicator = heightMinusLine - footerIndicatorLineHeight; mPath.reset(); mPath.moveTo(leftMinusPadding, heightMinusLine); mPath.lineTo(rightPlusPadding, heightMinusLine); mPath.lineTo(rightPlusPadding, heightMinusLineMinusIndicator); mPath.lineTo(leftMinusPadding, heightMinusLineMinusIndicator); mPath.close(); mPaintFooterIndicator.setAlpha((int) (0xFF * selectedPercent)); canvas.drawPath(mPath, mPaintFooterIndicator); mPaintFooterIndicator.setAlpha(0xFF); break; } }
From source file:cn.eoe.app.indicator.TitlePageIndicator.java
@Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); if (mViewPager == null) { return;/*from w w w. j av a 2 s . c o m*/ } final int count = mViewPager.getAdapter().getCount(); if (count == 0) { return; } // mCurrentPage is -1 on first start and after orientation changed. If so, retrieve the correct index from viewpager. if (mCurrentPage == -1 && mViewPager != null) { mCurrentPage = mViewPager.getCurrentItem(); } //Calculate views bounds ArrayList<Rect> bounds = calculateAllBounds(mPaintText); final int boundsSize = bounds.size(); //Make sure we're on a page that still exists if (mCurrentPage >= boundsSize) { setCurrentItem(boundsSize - 1); return; } final int countMinusOne = count - 1; final float halfWidth = getWidth() / 2f; final int left = getLeft(); final float leftClip = left + mClipPadding; final int width = getWidth(); int height = getHeight(); final int right = left + width; final float rightClip = right - mClipPadding; int page = mCurrentPage; float offsetPercent; if (mPageOffset <= 0.5) { offsetPercent = mPageOffset; } else { page += 1; offsetPercent = 1 - mPageOffset; } 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 Rect 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--) { Rect bound = bounds.get(i); //Is left side is outside the screen if (bound.left < leftClip) { int 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 Rect rightBound = bounds.get(i + 1); //Intersection if (bound.right + mTitlePadding > rightBound.left) { bound.left = (int) (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++) { Rect bound = bounds.get(i); //If right side is outside the screen if (bound.right > rightClip) { int 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 Rect leftBound = bounds.get(i - 1); //Intersection if (bound.left - mTitlePadding < leftBound.right) { bound.left = (int) (leftBound.right + mTitlePadding); bound.right = bound.left + w; } } } } //Now draw views int colorTextAlpha = mColorText >>> 24; for (int i = 0; i < count; i++) { //Get the title Rect 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); final CharSequence pageTitle = getTitle(i); //Only set bold if we are within bounds mPaintText.setFakeBoldText(currentPage && currentBold && mBoldText); //Draw text as unselected mPaintText.setColor(mColorText); if (currentPage && currentSelected) { //Fade out/in unselected text as the selected text fades in/out mPaintText.setAlpha(colorTextAlpha - (int) (colorTextAlpha * selectedPercent)); } //Except if there's an intersection with the right view if (i < boundsSize - 1) { Rect rightBound = bounds.get(i + 1); //Intersection if (bound.right + mTitlePadding > rightBound.left) { int w = bound.right - bound.left; bound.left = (int) (rightBound.left - w - mTitlePadding); bound.right = bound.left + w; } } canvas.drawText(pageTitle, 0, pageTitle.length(), bound.left + TextMaginLeftAndRight / 2, 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(pageTitle, 0, pageTitle.length(), bound.left + TextMaginLeftAndRight / 2, bound.bottom + mTopPadding, mPaintText); } } } //If we want the line on the top change height to zero and invert the line height to trick the drawing code float footerLineHeight = mFooterLineHeight; float footerIndicatorLineHeight = mFooterIndicatorHeight; if (mLinePosition == LinePosition.Top) { height = 0; footerLineHeight = -footerLineHeight; footerIndicatorLineHeight = -footerIndicatorLineHeight; } //Draw the footer line mPath.reset(); mPath.moveTo(0, height - footerLineHeight / 2f); mPath.lineTo(width, height - footerLineHeight / 2f); mPath.close(); canvas.drawPath(mPath, mPaintFooterLine); float heightMinusLine = height - footerLineHeight; switch (mFooterIndicatorStyle) { case Triangle: mPath.reset(); mPath.moveTo(halfWidth, heightMinusLine - footerIndicatorLineHeight); mPath.lineTo(halfWidth + footerIndicatorLineHeight, heightMinusLine); mPath.lineTo(halfWidth - footerIndicatorLineHeight, heightMinusLine); mPath.close(); canvas.drawPath(mPath, mPaintFooterIndicator); break; case Underline: if (!currentSelected || page >= boundsSize) { break; } Rect underlineBounds = bounds.get(page); final float rightPlusPadding = underlineBounds.right + mFooterIndicatorUnderlinePadding; final float leftMinusPadding = underlineBounds.left - mFooterIndicatorUnderlinePadding; final float heightMinusLineMinusIndicator = heightMinusLine - footerIndicatorLineHeight; mPath.reset(); mPath.moveTo(leftMinusPadding, heightMinusLine); mPath.lineTo(rightPlusPadding, heightMinusLine); mPath.lineTo(rightPlusPadding, heightMinusLineMinusIndicator); mPath.lineTo(leftMinusPadding, heightMinusLineMinusIndicator); mPath.close(); mPaintFooterIndicator.setAlpha((int) (0xFF * selectedPercent)); canvas.drawPath(mPath, mPaintFooterIndicator); mPaintFooterIndicator.setAlpha(0xFF); break; } }
From source file:com.android.core.view.indicator.TitlePageIndicator.java
@Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); if (mViewPager == null) { return;/*from w w w . j a v a2 s . c om*/ } final int count = mViewPager.getAdapter().getCount(); if (count == 0) { return; } // mCurrentPage is -1 on first start and after orientation changed. If so, retrieve the correct index from viewpager. if (mCurrentPage == -1 && mViewPager != null) { mCurrentPage = mViewPager.getCurrentItem(); } //Calculate views bounds ArrayList<Rect> bounds = calculateAllBounds(mPaintText); final int boundsSize = bounds.size(); //Make sure we're on a page that still exists if (mCurrentPage >= boundsSize) { setCurrentItem(boundsSize - 1); return; } final int countMinusOne = count - 1; final float halfWidth = getWidth() / 2f; final int left = getLeft(); final float leftClip = left + mClipPadding; final int width = getWidth(); int height = getHeight(); final int right = left + width; final float rightClip = right - mClipPadding; int page = mCurrentPage; float offsetPercent; if (mPageOffset <= 0.5) { offsetPercent = mPageOffset; } else { page += 1; offsetPercent = 1 - mPageOffset; } 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 Rect 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--) { Rect bound = bounds.get(i); //Is left side is outside the screen if (bound.left < leftClip) { int 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 Rect rightBound = bounds.get(i + 1); //Intersection if (bound.right + mTitlePadding > rightBound.left) { bound.left = (int) (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++) { Rect bound = bounds.get(i); //If right side is outside the screen if (bound.right > rightClip) { int 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 Rect leftBound = bounds.get(i - 1); //Intersection if (bound.left - mTitlePadding < leftBound.right) { bound.left = (int) (leftBound.right + mTitlePadding); bound.right = bound.left + w; } } } } //Now draw views int colorTextAlpha = mColorText >>> 24; for (int i = 0; i < count; i++) { //Get the title Rect 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); final CharSequence pageTitle = getTitle(i); //Only set bold if we are within bounds mPaintText.setFakeBoldText(currentPage && currentBold && mBoldText); //Draw text as unselected mPaintText.setColor(mColorText); if (currentPage && currentSelected) { //Fade out/in unselected text as the selected text fades in/out mPaintText.setAlpha(colorTextAlpha - (int) (colorTextAlpha * selectedPercent)); } //Except if there's an intersection with the right view if (i < boundsSize - 1) { Rect rightBound = bounds.get(i + 1); //Intersection if (bound.right + mTitlePadding > rightBound.left) { int w = bound.right - bound.left; bound.left = (int) (rightBound.left - w - mTitlePadding); bound.right = bound.left + w; } } canvas.drawText(pageTitle, 0, pageTitle.length(), 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(pageTitle, 0, pageTitle.length(), bound.left, bound.bottom + mTopPadding, mPaintText); } } } //If we want the line on the top change height to zero and invert the line height to trick the drawing code float footerLineHeight = mFooterLineHeight; float footerIndicatorLineHeight = mFooterIndicatorHeight; if (mLinePosition == LinePosition.Top) { height = 0; footerLineHeight = -footerLineHeight; footerIndicatorLineHeight = -footerIndicatorLineHeight; } //Draw the footer line mPath.reset(); mPath.moveTo(0, height - footerLineHeight / 2f); mPath.lineTo(width, height - footerLineHeight / 2f); mPath.close(); canvas.drawPath(mPath, mPaintFooterLine); float heightMinusLine = height - footerLineHeight; switch (mFooterIndicatorStyle) { case Triangle: mPath.reset(); mPath.moveTo(halfWidth, heightMinusLine - footerIndicatorLineHeight); mPath.lineTo(halfWidth + footerIndicatorLineHeight, heightMinusLine); mPath.lineTo(halfWidth - footerIndicatorLineHeight, heightMinusLine); mPath.close(); canvas.drawPath(mPath, mPaintFooterIndicator); break; case Underline: default: if (!currentSelected || page >= boundsSize) { break; } Rect underlineBounds = bounds.get(page); final float rightPlusPadding = underlineBounds.right + mFooterIndicatorUnderlinePadding; final float leftMinusPadding = underlineBounds.left - mFooterIndicatorUnderlinePadding; final float heightMinusLineMinusIndicator = heightMinusLine - footerIndicatorLineHeight; mPath.reset(); mPath.moveTo(leftMinusPadding, heightMinusLine); mPath.lineTo(rightPlusPadding, heightMinusLine); mPath.lineTo(rightPlusPadding, heightMinusLineMinusIndicator); mPath.lineTo(leftMinusPadding, heightMinusLineMinusIndicator); mPath.close(); mPaintFooterIndicator.setAlpha((int) (0xFF * selectedPercent)); canvas.drawPath(mPath, mPaintFooterIndicator); mPaintFooterIndicator.setAlpha(0xFF); break; } }
From source file:com.maedi.user.godok.v1.viewpagerindicator.TitlePageIndicator.java
@Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); if (mViewPager == null) { return;/*from www .j av a 2s . c o m*/ } final int count = mViewPager.getAdapter().getCount(); if (count == 0) { return; } // mCurrentPage is -1 on first start and after orientation changed. If so, retrieve the correct index from viewpager. if (mCurrentPage == -1 && mViewPager != null) { mCurrentPage = mViewPager.getCurrentItem(); } //Calculate views bounds ArrayList<Rect> bounds = calculateAllBounds(mPaintText); final int boundsSize = bounds.size(); //Make sure we're on a page that still exists if (mCurrentPage >= boundsSize) { setCurrentItem(boundsSize - 1); return; } final int countMinusOne = count - 1; final float halfWidth = getWidth() / 2f; final int left = getLeft(); final float leftClip = left + mClipPadding; final int width = getWidth(); int height = getHeight(); final int right = left + width; final float rightClip = right - mClipPadding; int page = mCurrentPage; float offsetPercent; if (mPageOffset <= 0.5) { offsetPercent = mPageOffset; } else { page += 1; offsetPercent = 1 - mPageOffset; } 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 Rect 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--) { Rect bound = bounds.get(i); //Is left side is outside the screen if (bound.left < leftClip) { int 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 Rect rightBound = bounds.get(i + 1); //Intersection if (bound.right + mTitlePadding > rightBound.left) { bound.left = (int) (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++) { Rect bound = bounds.get(i); //If right side is outside the screen if (bound.right > rightClip) { int 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 Rect leftBound = bounds.get(i - 1); //Intersection if (bound.left - mTitlePadding < leftBound.right) { bound.left = (int) (leftBound.right + mTitlePadding); bound.right = bound.left + w; } } } } //Now draw views int colorTextAlpha = mColorText >>> 24; for (int i = 0; i < count; i++) { //Get the title Rect 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); final CharSequence pageTitle = getTitle(i); //Only set bold if we are within bounds mPaintText.setFakeBoldText(currentPage && currentBold && mBoldText); //Draw text as unselected mPaintText.setColor(mColorText); if (currentPage && currentSelected) { //Fade out/in unselected text as the selected text fades in/out mPaintText.setAlpha(colorTextAlpha - (int) (colorTextAlpha * selectedPercent)); } //Except if there's an intersection with the right view if (i < boundsSize - 1) { Rect rightBound = bounds.get(i + 1); //Intersection if (bound.right + mTitlePadding > rightBound.left) { int w = bound.right - bound.left; bound.left = (int) (rightBound.left - w - mTitlePadding); bound.right = bound.left + w; } } canvas.drawText(pageTitle, 0, pageTitle.length(), 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(pageTitle, 0, pageTitle.length(), bound.left, bound.bottom + mTopPadding, mPaintText); } } } //If we want the line on the top change height to zero and invert the line height to trick the drawing code float footerLineHeight = mFooterLineHeight; float footerIndicatorLineHeight = mFooterIndicatorHeight; if (mLinePosition == LinePosition.Top) { height = 0; footerLineHeight = -footerLineHeight; footerIndicatorLineHeight = -footerIndicatorLineHeight; } //Draw the footer line mPath.reset(); mPath.moveTo(0, height - footerLineHeight / 2f); mPath.lineTo(width, height - footerLineHeight / 2f); mPath.close(); canvas.drawPath(mPath, mPaintFooterLine); float heightMinusLine = height - footerLineHeight; switch (mFooterIndicatorStyle) { case None: break; case Triangle: mPath.reset(); mPath.moveTo(halfWidth, heightMinusLine - footerIndicatorLineHeight); mPath.lineTo(halfWidth + footerIndicatorLineHeight, heightMinusLine); mPath.lineTo(halfWidth - footerIndicatorLineHeight, heightMinusLine); mPath.close(); canvas.drawPath(mPath, mPaintFooterIndicator); break; case Underline: if (!currentSelected || page >= boundsSize) { break; } Rect underlineBounds = bounds.get(page); final float rightPlusPadding = underlineBounds.right + mFooterIndicatorUnderlinePadding; final float leftMinusPadding = underlineBounds.left - mFooterIndicatorUnderlinePadding; final float heightMinusLineMinusIndicator = heightMinusLine - footerIndicatorLineHeight; mPath.reset(); mPath.moveTo(leftMinusPadding, heightMinusLine); mPath.lineTo(rightPlusPadding, heightMinusLine); mPath.lineTo(rightPlusPadding, heightMinusLineMinusIndicator); mPath.lineTo(leftMinusPadding, heightMinusLineMinusIndicator); mPath.close(); mPaintFooterIndicator.setAlpha((int) (0xFF * selectedPercent)); canvas.drawPath(mPath, mPaintFooterIndicator); mPaintFooterIndicator.setAlpha(0xFF); break; } }
From source file:com.sflib.CustomView.indicator.TitlePageIndicator.java
@Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); if (mViewPager == null) { return;/*w w w.j a v a 2 s . com*/ } final int count = mViewPager.getAdapter().getCount(); if (count == 0) { return; } // mCurrentPage is -1 on first doRefresh and after orientation changed. If so, retrieve the correct index from viewpager. if (mCurrentPage == -1 && mViewPager != null) { mCurrentPage = mViewPager.getCurrentItem(); } //Calculate views bounds ArrayList<Rect> bounds = calculateAllBounds(mPaintText); final int boundsSize = bounds.size(); //Make sure we're on a page that still exists if (mCurrentPage >= boundsSize) { setCurrentItem(boundsSize - 1); return; } final int countMinusOne = count - 1; final float halfWidth = getWidth() / 2f; final int left = getLeft(); final float leftClip = left + mClipPadding; final int width = getWidth(); int height = getHeight(); final int right = left + width; final float rightClip = right - mClipPadding; int page = mCurrentPage; float offsetPercent; if (mPageOffset <= 0.5) { offsetPercent = mPageOffset; } else { page += 1; offsetPercent = 1 - mPageOffset; } 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 Rect 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--) { Rect bound = bounds.get(i); //Is left side is outside the screen if (bound.left < leftClip) { int 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 Rect rightBound = bounds.get(i + 1); //Intersection if (bound.right + mTitlePadding > rightBound.left) { bound.left = (int) (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++) { Rect bound = bounds.get(i); //If right side is outside the screen if (bound.right > rightClip) { int 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 Rect leftBound = bounds.get(i - 1); //Intersection if (bound.left - mTitlePadding < leftBound.right) { bound.left = (int) (leftBound.right + mTitlePadding); bound.right = bound.left + w; } } } } //Now draw views int colorTextAlpha = mColorText >>> 24; for (int i = 0; i < count; i++) { //Get the title Rect 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); final CharSequence pageTitle = getTitle(i); //Only set bold if we are within bounds mPaintText.setFakeBoldText(currentPage && currentBold && mBoldText); //Draw text as unselected mPaintText.setColor(mColorText); if (currentPage && currentSelected) { //Fade out/in unselected text as the selected text fades in/out mPaintText.setAlpha(colorTextAlpha - (int) (colorTextAlpha * selectedPercent)); } //Except if there's an intersection with the right view if (i < boundsSize - 1) { Rect rightBound = bounds.get(i + 1); //Intersection if (bound.right + mTitlePadding > rightBound.left) { int w = bound.right - bound.left; bound.left = (int) (rightBound.left - w - mTitlePadding); bound.right = bound.left + w; } } canvas.drawText(pageTitle, 0, pageTitle.length(), 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(pageTitle, 0, pageTitle.length(), bound.left, bound.bottom + mTopPadding, mPaintText); } } } //If we want the line on the top change height to zero and invert the line height to trick the drawing code float footerLineHeight = mFooterLineHeight; float footerIndicatorLineHeight = mFooterIndicatorHeight; if (mLinePosition == LinePosition.Top) { height = 0; footerLineHeight = -footerLineHeight; footerIndicatorLineHeight = -footerIndicatorLineHeight; } //Draw the footer line mPath.reset(); mPath.moveTo(0, height - footerLineHeight / 2f); mPath.lineTo(width, height - footerLineHeight / 2f); mPath.close(); canvas.drawPath(mPath, mPaintFooterLine); float heightMinusLine = height - footerLineHeight; switch (mFooterIndicatorStyle) { case Triangle: mPath.reset(); mPath.moveTo(halfWidth, heightMinusLine - footerIndicatorLineHeight); mPath.lineTo(halfWidth + footerIndicatorLineHeight, heightMinusLine); mPath.lineTo(halfWidth - footerIndicatorLineHeight, heightMinusLine); mPath.close(); canvas.drawPath(mPath, mPaintFooterIndicator); break; case Underline: if (!currentSelected || page >= boundsSize) { break; } Rect underlineBounds = bounds.get(page); final float rightPlusPadding = underlineBounds.right + mFooterIndicatorUnderlinePadding; final float leftMinusPadding = underlineBounds.left - mFooterIndicatorUnderlinePadding; final float heightMinusLineMinusIndicator = heightMinusLine - footerIndicatorLineHeight; mPath.reset(); mPath.moveTo(leftMinusPadding, heightMinusLine); mPath.lineTo(rightPlusPadding, heightMinusLine); mPath.lineTo(rightPlusPadding, heightMinusLineMinusIndicator); mPath.lineTo(leftMinusPadding, heightMinusLineMinusIndicator); mPath.close(); mPaintFooterIndicator.setAlpha((int) (0xFF * selectedPercent)); canvas.drawPath(mPath, mPaintFooterIndicator); mPaintFooterIndicator.setAlpha(0xFF); break; } }
From source file:com.ahutjw.indicator.TitlePageIndicator.java
@SuppressWarnings("incomplete-switch") @Override/* ww w . j a v a 2s. c om*/ protected void onDraw(Canvas canvas) { super.onDraw(canvas); if (mViewPager == null) { return; } final int count = mViewPager.getAdapter().getCount(); if (count == 0) { return; } // mCurrentPage is -1 on first start and after orientation changed. If so, retrieve the correct index from viewpager. if (mCurrentPage == -1 && mViewPager != null) { mCurrentPage = mViewPager.getCurrentItem(); } //Calculate views bounds ArrayList<Rect> bounds = calculateAllBounds(mPaintText); final int boundsSize = bounds.size(); //Make sure we're on a page that still exists if (mCurrentPage >= boundsSize) { setCurrentItem(boundsSize - 1); return; } final int countMinusOne = count - 1; final float halfWidth = getWidth() / 2f; final int left = getLeft(); final float leftClip = left + mClipPadding; final int width = getWidth(); int height = getHeight(); final int right = left + width; final float rightClip = right - mClipPadding; int page = mCurrentPage; float offsetPercent; if (mPageOffset <= 0.5) { offsetPercent = mPageOffset; } else { page += 1; offsetPercent = 1 - mPageOffset; } 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 Rect 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--) { Rect bound = bounds.get(i); //Is left side is outside the screen if (bound.left < leftClip) { int 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 Rect rightBound = bounds.get(i + 1); //Intersection if (bound.right + mTitlePadding > rightBound.left) { bound.left = (int) (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++) { Rect bound = bounds.get(i); //If right side is outside the screen if (bound.right > rightClip) { int 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 Rect leftBound = bounds.get(i - 1); //Intersection if (bound.left - mTitlePadding < leftBound.right) { bound.left = (int) (leftBound.right + mTitlePadding); bound.right = bound.left + w; } } } } //Now draw views int colorTextAlpha = mColorText >>> 24; for (int i = 0; i < count; i++) { //Get the title Rect 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); final CharSequence pageTitle = getTitle(i); //Only set bold if we are within bounds mPaintText.setFakeBoldText(currentPage && currentBold && mBoldText); //Draw text as unselected mPaintText.setColor(mColorText); if (currentPage && currentSelected) { //Fade out/in unselected text as the selected text fades in/out mPaintText.setAlpha(colorTextAlpha - (int) (colorTextAlpha * selectedPercent)); } //Except if there's an intersection with the right view if (i < boundsSize - 1) { Rect rightBound = bounds.get(i + 1); //Intersection if (bound.right + mTitlePadding > rightBound.left) { int w = bound.right - bound.left; bound.left = (int) (rightBound.left - w - mTitlePadding); bound.right = bound.left + w; } } canvas.drawText(pageTitle, 0, pageTitle.length(), bound.left + TextMaginLeftAndRight / 2, 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(pageTitle, 0, pageTitle.length(), bound.left + TextMaginLeftAndRight / 2, bound.bottom + mTopPadding, mPaintText); } } } //If we want the line on the top change height to zero and invert the line height to trick the drawing code float footerLineHeight = mFooterLineHeight; float footerIndicatorLineHeight = mFooterIndicatorHeight; if (mLinePosition == LinePosition.Top) { height = 0; footerLineHeight = -footerLineHeight; footerIndicatorLineHeight = -footerIndicatorLineHeight; } //Draw the footer line mPath.reset(); mPath.moveTo(0, height - footerLineHeight / 2f); mPath.lineTo(width, height - footerLineHeight / 2f); mPath.close(); canvas.drawPath(mPath, mPaintFooterLine); float heightMinusLine = height - footerLineHeight; switch (mFooterIndicatorStyle) { case Triangle: mPath.reset(); mPath.moveTo(halfWidth, heightMinusLine - footerIndicatorLineHeight); mPath.lineTo(halfWidth + footerIndicatorLineHeight, heightMinusLine); mPath.lineTo(halfWidth - footerIndicatorLineHeight, heightMinusLine); mPath.close(); canvas.drawPath(mPath, mPaintFooterIndicator); break; case Underline: if (!currentSelected || page >= boundsSize) { break; } Rect underlineBounds = bounds.get(page); final float rightPlusPadding = underlineBounds.right + mFooterIndicatorUnderlinePadding; final float leftMinusPadding = underlineBounds.left - mFooterIndicatorUnderlinePadding; final float heightMinusLineMinusIndicator = heightMinusLine - footerIndicatorLineHeight; mPath.reset(); mPath.moveTo(leftMinusPadding, heightMinusLine); mPath.lineTo(rightPlusPadding, heightMinusLine); mPath.lineTo(rightPlusPadding, heightMinusLineMinusIndicator); mPath.lineTo(leftMinusPadding, heightMinusLineMinusIndicator); mPath.close(); mPaintFooterIndicator.setAlpha((int) (0xFF * selectedPercent)); canvas.drawPath(mPath, mPaintFooterIndicator); mPaintFooterIndicator.setAlpha(0xFF); break; } }
From source file:jacketjie.common.libray.custom.view.viewpager.indicator.TitlePageIndicator.java
@Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); if (mViewPager == null) { return;// w w w .j ava 2s. co m } final int count = mViewPager.getAdapter().getCount(); if (count == 0) { return; } // mCurrentPage is -test_1 on first start and after orientation changed. If so, retrieve the correct index from viewpager. if (mCurrentPage == -1 && mViewPager != null) { mCurrentPage = mViewPager.getCurrentItem(); } //Calculate views bounds ArrayList<Rect> bounds = calculateAllBounds(mPaintText); final int boundsSize = bounds.size(); //Make sure we're on a page that still exists if (mCurrentPage >= boundsSize) { setCurrentItem(boundsSize - 1); return; } final int countMinusOne = count - 1; final float halfWidth = getWidth() / 2f; final int left = getLeft(); final float leftClip = left + mClipPadding; final int width = getWidth(); int height = getHeight(); final int right = left + width; final float rightClip = right - mClipPadding; int page = mCurrentPage; float offsetPercent; if (mPageOffset <= 0.5) { offsetPercent = mPageOffset; } else { page += 1; offsetPercent = 1 - mPageOffset; } 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 Rect 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--) { Rect bound = bounds.get(i); //Is left side is outside the screen if (bound.left < leftClip) { int 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 Rect rightBound = bounds.get(i + 1); //Intersection if (bound.right + mTitlePadding > rightBound.left) { bound.left = (int) (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++) { Rect bound = bounds.get(i); //If right side is outside the screen if (bound.right > rightClip) { int 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 Rect leftBound = bounds.get(i - 1); //Intersection if (bound.left - mTitlePadding < leftBound.right) { bound.left = (int) (leftBound.right + mTitlePadding); bound.right = bound.left + w; } } } } //Now draw views int colorTextAlpha = mColorText >>> 24; for (int i = 0; i < count; i++) { //Get the title Rect 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); final CharSequence pageTitle = getTitle(i); //Only set bold if we are within bounds mPaintText.setFakeBoldText(currentPage && currentBold && mBoldText); //Draw text as unselected mPaintText.setColor(mColorText); if (currentPage && currentSelected) { //Fade out/in unselected text as the selected text fades in/out mPaintText.setAlpha(colorTextAlpha - (int) (colorTextAlpha * selectedPercent)); } //Except if there's an intersection with the right view if (i < boundsSize - 1) { Rect rightBound = bounds.get(i + 1); //Intersection if (bound.right + mTitlePadding > rightBound.left) { int w = bound.right - bound.left; bound.left = (int) (rightBound.left - w - mTitlePadding); bound.right = bound.left + w; } } canvas.drawText(pageTitle, 0, pageTitle.length(), 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(pageTitle, 0, pageTitle.length(), bound.left, bound.bottom + mTopPadding, mPaintText); } } } //If we want the line on the top change height to zero and invert the line height to trick the drawing code float footerLineHeight = mFooterLineHeight; float footerIndicatorLineHeight = mFooterIndicatorHeight; if (mLinePosition == LinePosition.Top) { height = 0; footerLineHeight = -footerLineHeight; footerIndicatorLineHeight = -footerIndicatorLineHeight; } //Draw the footer line mPath.reset(); mPath.moveTo(0, height - footerLineHeight / 2f); mPath.lineTo(width, height - footerLineHeight / 2f); mPath.close(); canvas.drawPath(mPath, mPaintFooterLine); float heightMinusLine = height - footerLineHeight; switch (mFooterIndicatorStyle) { case Triangle: mPath.reset(); mPath.moveTo(halfWidth, heightMinusLine - footerIndicatorLineHeight); mPath.lineTo(halfWidth + footerIndicatorLineHeight, heightMinusLine); mPath.lineTo(halfWidth - footerIndicatorLineHeight, heightMinusLine); mPath.close(); canvas.drawPath(mPath, mPaintFooterIndicator); break; case Underline: if (!currentSelected || page >= boundsSize) { break; } Rect underlineBounds = bounds.get(page); final float rightPlusPadding = underlineBounds.right + mFooterIndicatorUnderlinePadding; final float leftMinusPadding = underlineBounds.left - mFooterIndicatorUnderlinePadding; final float heightMinusLineMinusIndicator = heightMinusLine - footerIndicatorLineHeight; mPath.reset(); mPath.moveTo(leftMinusPadding, heightMinusLine); mPath.lineTo(rightPlusPadding, heightMinusLine); mPath.lineTo(rightPlusPadding, heightMinusLineMinusIndicator); mPath.lineTo(leftMinusPadding, heightMinusLineMinusIndicator); mPath.close(); mPaintFooterIndicator.setAlpha((int) (0xFF * selectedPercent)); canvas.drawPath(mPath, mPaintFooterIndicator); mPaintFooterIndicator.setAlpha(0xFF); break; } }
From source file:com.pc.pager.indicator.TitlePageIndicator.java
@Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); if (mViewPager == null) { return;/*from ww w. j av a 2 s . co m*/ } final int count = mViewPager.getAdapter().getCount(); if (count == 0) { return; } // mCurrentPage is -1 on first start and after orientation changed. If // so, retrieve the correct index from viewpager. if (mCurrentPage == -1 && mViewPager != null) { mCurrentPage = mViewPager.getCurrentItem(); } // Calculate views bounds ArrayList<Rect> bounds = calculateAllBounds(mPaintText); final int boundsSize = bounds.size(); // Make sure we're on a page that still exists if (mCurrentPage >= boundsSize) { setCurrentItem(boundsSize - 1); return; } final int countMinusOne = count - 1; final float halfWidth = getWidth() / 2f; final int left = getLeft(); final float leftClip = left + mClipPadding; final int width = getWidth(); int height = getHeight(); final int right = left + width; final float rightClip = right - mClipPadding; int page = mCurrentPage; float offsetPercent; if (mPageOffset <= 0.5) { offsetPercent = mPageOffset; } else { page += 1; offsetPercent = 1 - mPageOffset; } 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 Rect 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--) { Rect bound = bounds.get(i); // Is left side is outside the screen if (bound.left < leftClip) { int 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 Rect rightBound = bounds.get(i + 1); // Intersection if (bound.right + mTitlePadding > rightBound.left) { bound.left = (int) (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++) { Rect bound = bounds.get(i); // If right side is outside the screen if (bound.right > rightClip) { int 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 Rect leftBound = bounds.get(i - 1); // Intersection if (bound.left - mTitlePadding < leftBound.right) { bound.left = (int) (leftBound.right + mTitlePadding); bound.right = bound.left + w; } } } } // Now draw views int colorTextAlpha = mColorText >>> 24; for (int i = 0; i < count; i++) { // Get the title Rect 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); final CharSequence pageTitle = getTitle(i); // Only set bold if we are within bounds mPaintText.setFakeBoldText(currentPage && currentBold && mBoldText); // Draw text as unselected mPaintText.setColor(mColorText); if (currentPage && currentSelected) { // Fade out/in unselected text as the selected text fades // in/out mPaintText.setAlpha(colorTextAlpha - (int) (colorTextAlpha * selectedPercent)); } // Except if there's an intersection with the right view if (i < boundsSize - 1) { Rect rightBound = bounds.get(i + 1); // Intersection if (bound.right + mTitlePadding > rightBound.left) { int w = bound.right - bound.left; bound.left = (int) (rightBound.left - w - mTitlePadding); bound.right = bound.left + w; } } canvas.drawText(pageTitle, 0, pageTitle.length(), bound.left + TextMaginLeftAndRight / 2, 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(pageTitle, 0, pageTitle.length(), bound.left + TextMaginLeftAndRight / 2, bound.bottom + mTopPadding, mPaintText); } } } // If we want the line on the top change height to zero and invert the // line height to trick the drawing code float footerLineHeight = mFooterLineHeight; float footerIndicatorLineHeight = mFooterIndicatorHeight; if (mLinePosition == LinePosition.Top) { height = 0; footerLineHeight = -footerLineHeight; footerIndicatorLineHeight = -footerIndicatorLineHeight; } // Draw the footer line mPath.reset(); mPath.moveTo(0, height - footerLineHeight / 2f); mPath.lineTo(width, height - footerLineHeight / 2f); mPath.close(); canvas.drawPath(mPath, mPaintFooterLine); float heightMinusLine = height - footerLineHeight; switch (mFooterIndicatorStyle) { case Triangle: mPath.reset(); mPath.moveTo(halfWidth, heightMinusLine - footerIndicatorLineHeight); mPath.lineTo(halfWidth + footerIndicatorLineHeight, heightMinusLine); mPath.lineTo(halfWidth - footerIndicatorLineHeight, heightMinusLine); mPath.close(); canvas.drawPath(mPath, mPaintFooterIndicator); break; case Underline: if (!currentSelected || page >= boundsSize) { break; } Rect underlineBounds = bounds.get(page); final float rightPlusPadding = underlineBounds.right + mFooterIndicatorUnderlinePadding; final float leftMinusPadding = underlineBounds.left - mFooterIndicatorUnderlinePadding; final float heightMinusLineMinusIndicator = heightMinusLine - footerIndicatorLineHeight; mPath.reset(); mPath.moveTo(leftMinusPadding, heightMinusLine); mPath.lineTo(rightPlusPadding, heightMinusLine); mPath.lineTo(rightPlusPadding, heightMinusLineMinusIndicator); mPath.lineTo(leftMinusPadding, heightMinusLineMinusIndicator); mPath.close(); mPaintFooterIndicator.setAlpha((int) (0xFF * selectedPercent)); canvas.drawPath(mPath, mPaintFooterIndicator); mPaintFooterIndicator.setAlpha(0xFF); break; } }
From source file:android.hqs.view.pager.indicator.TitlePageIndicator.java
@Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); if (mViewPager == null) { return;//from www . ja v a 2 s .co m } final int count = mViewPager.getAdapter().getCount(); if (count == 0) { return; } // mCurrentPage is -1 on first start and after orientation changed. If so, retrieve the correct index from viewpager. if (mCurrentPage == -1 && mViewPager != null) { mCurrentPage = mViewPager.getCurrentItem(); } //Calculate views bounds ArrayList<Rect> bounds = calculateAllBounds(mPaintText); final int boundsSize = bounds.size(); //Make sure we're on a page that still exists if (mCurrentPage >= boundsSize) { setCurrentItem(boundsSize - 1); return; } final int countMinusOne = count - 1; final float halfWidth = getWidth() / 2f; final int left = getLeft(); final float leftClip = left + mClipPadding; final int width = getWidth(); int height = getHeight(); final int right = left + width; final float rightClip = right - mClipPadding; int page = mCurrentPage; float offsetPercent; if (mPageOffset <= 0.5) { offsetPercent = mPageOffset; } else { page += 1; offsetPercent = 1 - mPageOffset; } 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 Rect 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--) { Rect bound = bounds.get(i); //Is left side is outside the screen if (bound.left < leftClip) { int 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 Rect rightBound = bounds.get(i + 1); //Intersection if (bound.right + mTitlePadding > rightBound.left) { bound.left = (int) (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++) { Rect bound = bounds.get(i); //If right side is outside the screen if (bound.right > rightClip) { int 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 Rect leftBound = bounds.get(i - 1); //Intersection if (bound.left - mTitlePadding < leftBound.right) { bound.left = (int) (leftBound.right + mTitlePadding); bound.right = bound.left + w; } } } } //Now draw views int colorTextAlpha = mColorText >>> 24; for (int i = 0; i < count; i++) { //Get the title Rect 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); final CharSequence pageTitle = getTitle(i); //Only set bold if we are within bounds mPaintText.setFakeBoldText(currentPage && currentBold && mBoldText); //Draw text as unselected mPaintText.setColor(mColorText); if (currentPage && currentSelected) { //Fade out/in unselected text as the selected text fades in/out mPaintText.setAlpha(colorTextAlpha - (int) (colorTextAlpha * selectedPercent)); } //Except if there's an intersection with the right view if (i < boundsSize - 1) { Rect rightBound = bounds.get(i + 1); //Intersection if (bound.right + mTitlePadding > rightBound.left) { int w = bound.right - bound.left; bound.left = (int) (rightBound.left - w - mTitlePadding); bound.right = bound.left + w; } } canvas.drawText(pageTitle, 0, pageTitle.length(), 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(pageTitle, 0, pageTitle.length(), bound.left, bound.bottom + mTopPadding, mPaintText); } } } //If we want the line on the top change height to zero and invert the line height to trick the drawing code float footerLineHeight = mFooterLineHeight; float footerIndicatorLineHeight = mFooterIndicatorHeight; if (mLinePosition == LinePosition.Top) { height = 0; footerLineHeight = -footerLineHeight; footerIndicatorLineHeight = -footerIndicatorLineHeight; } //Draw the footer line mPath.reset(); mPath.moveTo(0, height - footerLineHeight / 2f); mPath.lineTo(width, height - footerLineHeight / 2f); mPath.close(); canvas.drawPath(mPath, mPaintFooterLine); float heightMinusLine = height - footerLineHeight; switch (mFooterIndicatorStyle) { case Triangle: mPath.reset(); mPath.moveTo(halfWidth, heightMinusLine - footerIndicatorLineHeight); mPath.lineTo(halfWidth + footerIndicatorLineHeight, heightMinusLine); mPath.lineTo(halfWidth - footerIndicatorLineHeight, heightMinusLine); mPath.close(); canvas.drawPath(mPath, mPaintFooterIndicator); break; case Underline: if (!currentSelected || page >= boundsSize) { break; } Rect underlineBounds = bounds.get(page); final float rightPlusPadding = underlineBounds.right + mFooterIndicatorUnderlinePadding; final float leftMinusPadding = underlineBounds.left - mFooterIndicatorUnderlinePadding; final float heightMinusLineMinusIndicator = heightMinusLine - footerIndicatorLineHeight; mPath.reset(); mPath.moveTo(leftMinusPadding, heightMinusLine); mPath.lineTo(rightPlusPadding, heightMinusLine); mPath.lineTo(rightPlusPadding, heightMinusLineMinusIndicator); mPath.lineTo(leftMinusPadding, heightMinusLineMinusIndicator); mPath.close(); mPaintFooterIndicator.setAlpha((int) (0xFF * selectedPercent)); canvas.drawPath(mPath, mPaintFooterIndicator); mPaintFooterIndicator.setAlpha(0xFF); break; default: break; } }