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Adjust how we draw 'text below cover' bitmaps

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This commit is contained in:
Adrian Ulrich 2019-01-02 11:00:53 +01:00
parent b812373d5d
commit c7605a58d5
1 changed files with 35 additions and 26 deletions
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61
app/src/main/java/ch/blinkenlights/android/vanilla/CoverBitmap.java
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@ -1,6 +1,6 @@
/*
* Copyright (C) 2010, 2011 Christopher Eby <kreed@kreed.org>
* Copyright 2017 Adrian Ulrich <adrian@blinkenlights.ch>
* Copyright 2017-2019 Adrian Ulrich <adrian@blinkenlights.ch>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
@ -60,6 +60,7 @@ public final class CoverBitmap {
private static int TEXT_SIZE = -1;
private static int TEXT_SIZE_BIG;
private static int PADDING;
private static int TOP_PADDING;
private static int BOTTOM_PADDING;
/**
@ -73,7 +74,10 @@ public final class CoverBitmap {
TEXT_SIZE = (int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 14, metrics);
TEXT_SIZE_BIG = (int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 20, metrics);
PADDING = (int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 10, metrics);
BOTTOM_PADDING = (int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 175, metrics);
// padding to take actionbar into account.
TOP_PADDING = (int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 14, metrics);
// space used by the controls bar.
BOTTOM_PADDING = (int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 80, metrics);
}
/**
@ -212,63 +216,68 @@ public final class CoverBitmap {
int textSize = TEXT_SIZE;
int textSizeBig = TEXT_SIZE_BIG;
int padding = PADDING;
int topPadding = TOP_PADDING;
int bottomPadding = BOTTOM_PADDING;
// Get desired text color from theme and draw textual information
int colors[] = ThemeHelper.getDefaultCoverColors(context);
// inverted cover background color.
int textColor = 0xFF000000 + (0xFFFFFF - (colors[0] & 0xFFFFFF));
// Prepare text and calculate minimum height, so we can ensure
// that the cover doesn't 'eat' into it.
String title = song.title == null ? "" : song.title;
String album = song.album == null ? "" : song.album;
String artist = song.artist == null ? "" : song.artist;
// Space required to draw the bottom text.
int textTotalHeight = padding + textSizeBig + (padding+textSize) * 2 + padding;
// Y coord where text must start to fit it on screen.
int textStart = height - bottomPadding - textTotalHeight;
Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
int top = height - BOTTOM_PADDING;
// top describes where the text will start, so we can draw the cover on 0 -> top
if (cover != null) {
int topShift = textSizeBig; // guaranteed space from top
int avHeight = top; // how much space we can use at most
int coverHeight = Math.min(width, textStart-topPadding);
Bitmap zoomed = createZoomedBitmap(cover, width, coverHeight);
// amount of free Y pixels we have:
int free = textStart - coverHeight - topPadding;
// top padding to use
int pad = topPadding + free / 2;
canvas.drawBitmap(zoomed, 0, pad, null);
int coverWidth = width;
int coverHeight = avHeight - padding - padding;
if (coverHeight > coverWidth)
coverHeight = coverWidth;
if (coverHeight < 1)
coverHeight = 1;
int padHeight = (avHeight - coverHeight) / 2;
Rect rect = new Rect(0, padHeight, coverWidth, coverHeight+padHeight);
Bitmap zoomed = createZoomedBitmap(cover, coverWidth, coverHeight);
canvas.translate(0, topShift);
canvas.drawBitmap(zoomed, null, rect, null);
canvas.translate(0, -1*topShift);
// Y position where the cover ends.
int coverEnd = pad + coverHeight;
// amount of blank space we have after the cover and text.
int bottomFree = height - coverEnd - textTotalHeight - bottomPadding;
// alternative starting point of text, considering the free space:
int altStart = coverEnd + (bottomFree / 2);
if (altStart < textStart)
textStart = altStart;
}
// Where to start drawing the text.
int top = textStart + padding;
// Now draw the text:
PorterDuffColorFilter filter = new PorterDuffColorFilter(textColor, PorterDuff.Mode.SRC_ATOP);
Paint paint = new Paint();
paint.setAntiAlias(true);
// Title text
// Title
paint.setColorFilter(filter);
paint.setTextSize(textSizeBig);
int twidth = (int)paint.measureText(title);
int tstart = (width - twidth)/2;
drawText(canvas, title, tstart, top, width, twidth, paint);
top += textSizeBig + padding;
// Bottom text
paint.setAlpha(0xAA);
paint.setTextSize(textSize);
// Album
top += textSizeBig + padding;
twidth = (int)paint.measureText(album);
tstart = (width - twidth)/2;
drawText(canvas, album, tstart, top, width, twidth, paint);