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More layout Canvas/Paint implementation.

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Change-Id: Ib3da4a4b2259dc7c53b24444b5c0b78cee15d387
This commit is contained in:
Xavier Ducrohet
2010-11-01 18:45:20 -07:00
parent 5802deabf0
commit abff653ce8
2 changed files with 163 additions and 38 deletions
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130
tools/layoutlib/bridge/src/android/graphics/Canvas_Delegate.java
View File

@@ -458,8 +458,28 @@ public class Canvas_Delegate {
/*package*/ static void native_drawARGB(int nativeCanvas, int a, int r,
int g, int b) {
// FIXME
throw new UnsupportedOperationException();
// get the delegate from the native int.
Canvas_Delegate canvasDelegate = sManager.getDelegate(nativeCanvas);
if (canvasDelegate == null) {
assert false;
return;
}
// get a new graphics context.
Graphics2D graphics = (Graphics2D)canvasDelegate.getGraphics2d().create();
try {
// reset its transform just in case
graphics.setTransform(new AffineTransform());
// set the color
graphics.setColor(new Color(r, g, b, a));
graphics.fillRect(0, 0, canvasDelegate.mBufferedImage.getWidth(),
canvasDelegate.mBufferedImage.getHeight());
} finally {
// dispose Graphics2D object
graphics.dispose();
}
}
/*package*/ static void native_drawColor(int nativeCanvas, int color) {
@@ -676,32 +696,34 @@ public class Canvas_Delegate {
return;
}
Graphics2D g = canvasDelegate.getGraphics2d();
g = (Graphics2D)g.create();
g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
// set the color. because this only handles RGB, the alpha channel is handled
// as a composite.
g.setColor(new Color(paintDelegate.getColor()));
int alpha = paintDelegate.getAlpha();
float falpha = alpha / 255.f;
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, falpha));
// Paint.TextAlign indicates how the text is positioned relative to X.
// LEFT is the default and there's nothing to do.
if (paintDelegate.getTextAlign() != Paint.Align.LEFT.nativeInt) {
float m = paintDelegate.measureText(text, index, count);
if (paintDelegate.getTextAlign() == Paint.Align.CENTER.nativeInt) {
x -= m / 2;
} else if (paintDelegate.getTextAlign() == Paint.Align.RIGHT.nativeInt) {
x -= m;
}
}
List<FontInfo> fonts = paintDelegate.getFonts();
Graphics2D g = (Graphics2D) canvasDelegate.getGraphics2d().create();
try {
if (paintDelegate.isAntiAliased()) {
g.setRenderingHint(
RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
}
// set the color. because this only handles RGB, the alpha channel is handled
// as a composite.
g.setColor(new Color(paintDelegate.getColor()));
int alpha = paintDelegate.getAlpha();
float falpha = alpha / 255.f;
setModeInGraphics(g, PorterDuff.Mode.SRC_OVER, falpha);
// Paint.TextAlign indicates how the text is positioned relative to X.
// LEFT is the default and there's nothing to do.
if (paintDelegate.getTextAlign() != Paint.Align.LEFT.nativeInt) {
float m = paintDelegate.measureText(text, index, count);
if (paintDelegate.getTextAlign() == Paint.Align.CENTER.nativeInt) {
x -= m / 2;
} else if (paintDelegate.getTextAlign() == Paint.Align.RIGHT.nativeInt) {
x -= m;
}
}
List<FontInfo> fonts = paintDelegate.getFonts();
if (fonts.size() > 0) {
FontInfo mainFont = fonts.get(0);
int i = index;
@@ -873,6 +895,11 @@ public class Canvas_Delegate {
Graphics2D g = getGraphics2d();
g = (Graphics2D)g.create();
if (paint.isAntiAliased()) {
g.setRenderingHint(
RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
}
// configure it
g.setColor(new Color(paint.getColor()));
int alpha = paint.getAlpha();
@@ -932,6 +959,55 @@ public class Canvas_Delegate {
return g;
}
private static void setModeInGraphics(Graphics2D g, PorterDuff.Mode mode, float falpha) {
switch (mode) {
case CLEAR:
g.setComposite(AlphaComposite.getInstance(AlphaComposite.CLEAR, falpha));
break;
case DARKEN:
break;
case DST:
g.setComposite(AlphaComposite.getInstance(AlphaComposite.DST, falpha));
break;
case DST_ATOP:
g.setComposite(AlphaComposite.getInstance(AlphaComposite.DST_ATOP, falpha));
break;
case DST_IN:
g.setComposite(AlphaComposite.getInstance(AlphaComposite.DST_IN, falpha));
break;
case DST_OUT:
g.setComposite(AlphaComposite.getInstance(AlphaComposite.DST_OUT, falpha));
break;
case DST_OVER:
g.setComposite(AlphaComposite.getInstance(AlphaComposite.DST_OVER, falpha));
break;
case LIGHTEN:
break;
case MULTIPLY:
break;
case SCREEN:
break;
case SRC:
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC, falpha));
break;
case SRC_ATOP:
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, falpha));
break;
case SRC_IN:
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_IN, falpha));
break;
case SRC_OUT:
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OUT, falpha));
break;
case SRC_OVER:
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, falpha));
break;
case XOR:
g.setComposite(AlphaComposite.getInstance(AlphaComposite.XOR, falpha));
break;
}
}
private static void drawBitmap(
int nativeCanvas,

71
tools/layoutlib/bridge/src/android/graphics/Paint_Delegate.java
View File

@@ -77,6 +77,12 @@ public class Paint_Delegate {
private float mTextScaleX;
private float mTextSkewX;
private int mXfermode;
private int mColorFilter;
private int mShader;
private int mPathEffect;
private int mMaskFilter;
// ---- Public Helper methods ----
@@ -92,6 +98,10 @@ public class Paint_Delegate {
return mFonts;
}
public boolean isAntiAliased() {
return (mFlags & Paint.ANTI_ALIAS_FLAG) != 0;
}
public boolean isFilterBitmap() {
return (mFlags & Paint.FILTER_BITMAP_FLAG) != 0;
}
@@ -574,28 +584,58 @@ public class Paint_Delegate {
}
/*package*/ static int native_setShader(int native_object, int shader) {
// FIXME
throw new UnsupportedOperationException();
// get the delegate from the native int.
Paint_Delegate delegate = sManager.getDelegate(native_object);
if (delegate == null) {
assert false;
return shader;
}
return delegate.mShader = shader;
}
/*package*/ static int native_setColorFilter(int native_object, int filter) {
// FIXME
throw new UnsupportedOperationException();
// get the delegate from the native int.
Paint_Delegate delegate = sManager.getDelegate(native_object);
if (delegate == null) {
assert false;
return filter;
}
return delegate.mColorFilter = filter;
}
/*package*/ static int native_setXfermode(int native_object, int xfermode) {
// FIXME
throw new UnsupportedOperationException();
// get the delegate from the native int.
Paint_Delegate delegate = sManager.getDelegate(native_object);
if (delegate == null) {
assert false;
return xfermode;
}
return delegate.mXfermode = xfermode;
}
/*package*/ static int native_setPathEffect(int native_object, int effect) {
// FIXME
throw new UnsupportedOperationException();
// get the delegate from the native int.
Paint_Delegate delegate = sManager.getDelegate(native_object);
if (delegate == null) {
assert false;
return effect;
}
return delegate.mPathEffect = effect;
}
/*package*/ static int native_setMaskFilter(int native_object, int maskfilter) {
// FIXME
throw new UnsupportedOperationException();
// get the delegate from the native int.
Paint_Delegate delegate = sManager.getDelegate(native_object);
if (delegate == null) {
assert false;
return maskfilter;
}
return delegate.mMaskFilter = maskfilter;
}
/*package*/ static int native_setTypeface(int native_object, int typeface) {
@@ -778,6 +818,11 @@ public class Paint_Delegate {
mTextSize = paint.mTextSize;
mTextScaleX = paint.mTextScaleX;
mTextSkewX = paint.mTextSkewX;
mXfermode = paint.mXfermode;
mColorFilter = paint.mColorFilter;
mShader = paint.mShader;
mPathEffect = paint.mPathEffect;
mMaskFilter = paint.mMaskFilter;
}
private void reset() {
@@ -793,6 +838,11 @@ public class Paint_Delegate {
mTextSize = 20.f;
mTextScaleX = 1.f;
mTextSkewX = 0.f;
mXfermode = 0;
mColorFilter = 0;
mShader = 0;
mPathEffect = 0;
mMaskFilter = 0;
}
/**
@@ -877,7 +927,6 @@ public class Paint_Delegate {
}
private static void setFlag(Paint thisPaint, int flagMask, boolean flagValue) {
// get the delegate from the native int.
Paint_Delegate delegate = sManager.getDelegate(thisPaint.mNativePaint);