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Merge pull request #306 from amlcurran/custom-showcase-drawer
Custom + material showcase drawer API
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67 changes: 67 additions & 0 deletions
67
library/src/main/java/com/github/amlcurran/showcaseview/MaterialShowcaseDrawer.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| package com.github.amlcurran.showcaseview; | ||
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| import android.content.res.Resources; | ||
| import android.graphics.Bitmap; | ||
| import android.graphics.Canvas; | ||
| import android.graphics.Paint; | ||
| import android.graphics.PorterDuff; | ||
| import android.graphics.PorterDuffXfermode; | ||
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| public class MaterialShowcaseDrawer implements ShowcaseDrawer { | ||
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| private final float radius; | ||
| private final Paint basicPaint; | ||
| private final Paint eraserPaint; | ||
| private int backgroundColor; | ||
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| public MaterialShowcaseDrawer(Resources resources) { | ||
| this.radius = resources.getDimension(R.dimen.showcase_radius_material); | ||
| this.eraserPaint = new Paint(); | ||
| this.eraserPaint.setColor(0xFFFFFF); | ||
| this.eraserPaint.setAlpha(0); | ||
| this.eraserPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.MULTIPLY)); | ||
| this.eraserPaint.setAntiAlias(true); | ||
| this.basicPaint = new Paint(); | ||
| } | ||
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| @Override | ||
| public void setShowcaseColour(int color) { | ||
| // no-op | ||
| } | ||
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| @Override | ||
| public void drawShowcase(Bitmap buffer, float x, float y, float scaleMultiplier) { | ||
| Canvas bufferCanvas = new Canvas(buffer); | ||
| bufferCanvas.drawCircle(x, y, radius, eraserPaint); | ||
| } | ||
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| @Override | ||
| public int getShowcaseWidth() { | ||
| return (int) (radius * 2); | ||
| } | ||
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| @Override | ||
| public int getShowcaseHeight() { | ||
| return (int) (radius * 2); | ||
| } | ||
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| @Override | ||
| public float getBlockedRadius() { | ||
| return radius; | ||
| } | ||
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| @Override | ||
| public void setBackgroundColour(int backgroundColor) { | ||
| this.backgroundColor = backgroundColor; | ||
| } | ||
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| @Override | ||
| public void erase(Bitmap bitmapBuffer) { | ||
| bitmapBuffer.eraseColor(backgroundColor); | ||
| } | ||
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| @Override | ||
| public void drawToCanvas(Canvas canvas, Bitmap bitmapBuffer) { | ||
| canvas.drawBitmap(bitmapBuffer, 0, 0, basicPaint); | ||
| } | ||
| } |
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102 changes: 102 additions & 0 deletions
102
sample/src/main/java/com/github/amlcurran/showcaseview/sample/CustomShowcaseActivity.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| package com.github.amlcurran.showcaseview.sample; | ||
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| import android.app.Activity; | ||
| import android.content.res.Resources; | ||
| import android.graphics.Bitmap; | ||
| import android.graphics.Canvas; | ||
| import android.graphics.Paint; | ||
| import android.graphics.PorterDuff; | ||
| import android.graphics.PorterDuffXfermode; | ||
| import android.graphics.RectF; | ||
| import android.os.Bundle; | ||
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| import com.github.amlcurran.showcaseview.ShowcaseDrawer; | ||
| import com.github.amlcurran.showcaseview.ShowcaseView; | ||
| import com.github.amlcurran.showcaseview.targets.ViewTarget; | ||
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| public class CustomShowcaseActivity extends Activity { | ||
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| @Override | ||
| protected void onCreate(Bundle savedInstanceState) { | ||
| super.onCreate(savedInstanceState); | ||
| setContentView(R.layout.activity_custom_showcase); | ||
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| new ShowcaseView.Builder(this) | ||
| .setTarget(new ViewTarget(R.id.imageView, this)) | ||
| .setContentTitle(R.string.custom_text_painting_title) | ||
| .setContentText(R.string.custom_text_painting_text) | ||
| .setShowcaseDrawer(new CustomShowcaseView(getResources())) | ||
| .build(); | ||
| } | ||
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| private static class CustomShowcaseView implements ShowcaseDrawer { | ||
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| private final float width; | ||
| private final float height; | ||
| private final Paint eraserPaint; | ||
| private final Paint basicPaint; | ||
| private final int eraseColour; | ||
| private final RectF renderRect; | ||
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| public CustomShowcaseView(Resources resources) { | ||
| width = resources.getDimension(R.dimen.custom_showcase_width); | ||
| height = resources.getDimension(R.dimen.custom_showcase_height); | ||
| PorterDuffXfermode xfermode = new PorterDuffXfermode(PorterDuff.Mode.MULTIPLY); | ||
| eraserPaint = new Paint(); | ||
| eraserPaint.setColor(0xFFFFFF); | ||
| eraserPaint.setAlpha(0); | ||
| eraserPaint.setXfermode(xfermode); | ||
| eraserPaint.setAntiAlias(true); | ||
| eraseColour = resources.getColor(R.color.custom_showcase_bg); | ||
| basicPaint = new Paint(); | ||
| renderRect = new RectF(); | ||
| } | ||
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| @Override | ||
| public void setShowcaseColour(int color) { | ||
| eraserPaint.setColor(color); | ||
| } | ||
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| @Override | ||
| public void drawShowcase(Bitmap buffer, float x, float y, float scaleMultiplier) { | ||
| Canvas bufferCanvas = new Canvas(buffer); | ||
| renderRect.left = x - width / 2f; | ||
| renderRect.right = x + width / 2f; | ||
| renderRect.top = y - height / 2f; | ||
| renderRect.bottom = y + height / 2f; | ||
| bufferCanvas.drawRect(renderRect, eraserPaint); | ||
| } | ||
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| @Override | ||
| public int getShowcaseWidth() { | ||
| return (int) width; | ||
| } | ||
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| @Override | ||
| public int getShowcaseHeight() { | ||
| return (int) height; | ||
| } | ||
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| @Override | ||
| public float getBlockedRadius() { | ||
| return width; | ||
| } | ||
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| @Override | ||
| public void setBackgroundColour(int backgroundColor) { | ||
| // No-op, remove this from the API? | ||
| } | ||
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| @Override | ||
| public void erase(Bitmap bitmapBuffer) { | ||
| bitmapBuffer.eraseColor(eraseColour); | ||
| } | ||
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| @Override | ||
| public void drawToCanvas(Canvas canvas, Bitmap bitmapBuffer) { | ||
| canvas.drawBitmap(bitmapBuffer, 0, 0, basicPaint); | ||
| } | ||
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| } | ||
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| } |
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