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Graphics API: implement IosCanvas.drawLine(), IosCanvas.fillColor() and IosPaint.getTextHeight(), #92

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This commit is contained in:
Longri
2016-08-01 17:52:25 +02:00
committed by Emux
parent f736530049
commit a9bb6e3788
4 changed files with 114 additions and 43 deletions
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48
vtm-ios/src/org/oscim/ios/backend/IosCanvas.java
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@@ -19,6 +19,7 @@ import org.oscim.backend.canvas.Bitmap;
import org.oscim.backend.canvas.Canvas;
import org.oscim.backend.canvas.Paint;
import org.robovm.apple.coregraphics.CGBitmapContext;
import org.robovm.apple.coregraphics.CGBlendMode;
import org.robovm.apple.coregraphics.CGRect;
/**
@@ -26,6 +27,28 @@ import org.robovm.apple.coregraphics.CGRect;
*/
public class IosCanvas implements Canvas {
static void setFillColor(CGBitmapContext bctx, int color) {
float blue = (color & 0xFF) / 255f;
color >>= 8;
float green = (color & 0xFF) / 255f;
color >>= 8;
float red = (color & 0xFF) / 255f;
color >>= 8;
float alpha = (color & 0xFF) / 255f;
bctx.setRGBFillColor(red, green, blue, alpha);
}
static void setStrokeColor(CGBitmapContext bctx, int color) {
float blue = (color & 0xFF) / 255f;
color >>= 8;
float green = (color & 0xFF) / 255f;
color >>= 8;
float red = (color & 0xFF) / 255f;
color >>= 8;
float alpha = (color & 0xFF) / 255f;
bctx.setRGBStrokeColor(red, green, blue, alpha);
}
CGBitmapContext cgBitmapContext;
@Override
@@ -54,6 +77,7 @@ public class IosCanvas implements Canvas {
IosPaint iosStroke = (IosPaint) stroke;
iosFill.setStrokeWidth(iosStroke.strokeWidth);
iosFill.setStrokeColor(iosStroke.getColor());
iosStroke.drawLine(this.cgBitmapContext, string, x, y);
}
iosFill.drawLine(this.cgBitmapContext, string, x, y);
}
@@ -69,12 +93,32 @@ public class IosCanvas implements Canvas {
@Override
public void drawLine(int x1, int y1, int x2, int y2, Paint paint) {
// TODO
//flip Y-axis
y1 = (int) (this.cgBitmapContext.getHeight() - y1);
y2 = (int) (this.cgBitmapContext.getHeight() - y2);
// set Stroke properties
this.cgBitmapContext.setLineWidth(((IosPaint) paint).strokeWidth);
this.cgBitmapContext.setLineCap(((IosPaint) paint).getIosStrokeCap());
this.cgBitmapContext.setLineJoin(((IosPaint) paint).getIosStrokeJoin());
setStrokeColor(this.cgBitmapContext, (paint.getColor()));
//draw line
this.cgBitmapContext.beginPath();
this.cgBitmapContext.moveToPoint(x1, y1);
this.cgBitmapContext.addLineToPoint(x2, y2);
this.cgBitmapContext.strokePath();
}
@Override
public void fillColor(int color) {
// TODO
CGRect rect = new CGRect(0, 0, this.cgBitmapContext.getWidth(), this.cgBitmapContext.getHeight());
setFillColor(this.cgBitmapContext, (color));
this.cgBitmapContext.setBlendMode(CGBlendMode.Clear);
this.cgBitmapContext.fillRect(rect);
this.cgBitmapContext.setBlendMode(CGBlendMode.Normal);
this.cgBitmapContext.fillRect(rect);
}
@Override