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multiline text display

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This commit is contained in:
Sergey Solovyev 2011-11-02 13:45:40 +04:00
parent 1530be9ca3
commit 81d7510e36
1 changed files with 13 additions and 11 deletions
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24
src/main/java/org/solovyev/android/view/AutoResizeTextView.java
View File

@ -12,6 +12,7 @@ import android.text.Layout.Alignment;
import android.text.StaticLayout; import android.text.StaticLayout;
import android.text.TextPaint; import android.text.TextPaint;
import android.util.AttributeSet; import android.util.AttributeSet;
import android.util.TypedValue;
import android.widget.TextView; import android.widget.TextView;
/** /**
@ -56,8 +57,6 @@ public class AutoResizeTextView extends TextView {
// Add ellipsis to text that overflows at the smallest text size // Add ellipsis to text that overflows at the smallest text size
private boolean addEllipsis = true; private boolean addEllipsis = true;
private float textSizeStartPoint = MIN_TEXT_SIZE;
// Default constructor override // Default constructor override
public AutoResizeTextView(Context context) { public AutoResizeTextView(Context context) {
this(context, null); this(context, null);
@ -164,7 +163,7 @@ public class AutoResizeTextView extends TextView {
@Override @Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) { protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
if (changed || needsResize) { if (changed || needsResize) {
resizeText(right - left, bottom - top); resizeText(right - left, bottom - top, getText());
} }
super.onLayout(changed, left, top, right, bottom); super.onLayout(changed, left, top, right, bottom);
} }
@ -173,9 +172,13 @@ public class AutoResizeTextView extends TextView {
* Resize the text size with default width and height * Resize the text size with default width and height
*/ */
public void resizeText() { public void resizeText() {
resizeText(getText());
}
public void resizeText(final CharSequence text) {
int heightLimit = getHeight() - getPaddingBottom() - getPaddingTop(); int heightLimit = getHeight() - getPaddingBottom() - getPaddingTop();
int widthLimit = getWidth() - getPaddingLeft() - getPaddingRight(); int widthLimit = getWidth() - getPaddingLeft() - getPaddingRight();
resizeText(widthLimit, heightLimit); resizeText(widthLimit, heightLimit, text);
} }
/** /**
@ -183,9 +186,10 @@ public class AutoResizeTextView extends TextView {
* *
* @param width * @param width
* @param height * @param height
* @param text
*/ */
public void resizeText(int width, int height) { public void resizeText(int width, int height, final CharSequence text) {
CharSequence text = getText();
// Do not resize if the view does not have dimensions or there is no text // Do not resize if the view does not have dimensions or there is no text
if (text == null || text.length() == 0 || height <= 0 || width <= 0) { if (text == null || text.length() == 0 || height <= 0 || width <= 0) {
return; return;
@ -198,7 +202,7 @@ public class AutoResizeTextView extends TextView {
float oldTextSize = textPaint.getTextSize(); float oldTextSize = textPaint.getTextSize();
// If there is a max text size set, use the lesser of that and the default text size // If there is a max text size set, use the lesser of that and the default text size
float newTextSize = textSizeStartPoint; float newTextSize = 100;
// Get the required text height // Get the required text height
int newTextHeight = getTextRect(text, textPaint, width, newTextSize); int newTextHeight = getTextRect(text, textPaint, width, newTextSize);
@ -209,7 +213,7 @@ public class AutoResizeTextView extends TextView {
if (newTextSize <= minTextSize) { if (newTextSize <= minTextSize) {
break; break;
} }
newTextSize = Math.max(newTextSize - 1, minTextSize); newTextSize = Math.max(newTextSize - 2, minTextSize);
newTextHeight = getTextRect(text, textPaint, width, newTextSize); newTextHeight = getTextRect(text, textPaint, width, newTextSize);
} }
} else { } else {
@ -217,13 +221,11 @@ public class AutoResizeTextView extends TextView {
if (newTextSize <= minTextSize) { if (newTextSize <= minTextSize) {
break; break;
} }
newTextSize = Math.max(newTextSize + 1, minTextSize); newTextSize = Math.max(newTextSize + 2, minTextSize);
newTextHeight = getTextRect(text, textPaint, width, newTextSize); newTextHeight = getTextRect(text, textPaint, width, newTextSize);
} }
} }
textSizeStartPoint = newTextSize;
// If we had reached our minimum text size and still don't fit, append an ellipsis // If we had reached our minimum text size and still don't fit, append an ellipsis
if (addEllipsis && newTextSize == minTextSize && newTextHeight > height) { if (addEllipsis && newTextSize == minTextSize && newTextHeight > height) {
// Draw using a static layout // Draw using a static layout