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GskCanvas: implement drawPath, rotate, translate, save, restore

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This is enough to make DrawerArrowDrawable functional.

drawPath() only draws line segments for now.
This commit is contained in:
Julian Winkler
2024-04-08 23:15:05 +02:00
parent 74bedcc93c
commit 3d9eb9611f
10 changed files with 168 additions and 12 deletions
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27
src/api-impl/android/graphics/GskCanvas.java
View File

@@ -6,31 +6,39 @@ package android.graphics;
*/
public class GskCanvas extends Canvas {
private long snapshot;
private int save_count = 0;
public GskCanvas(long snapshot) {
System.out.println("GskCanvas(" + snapshot + ")");
this.snapshot = snapshot;
}
@Override
public int save() {
System.out.println("GskCanvas.save()");
return -1;
native_save(snapshot);
return save_count++;
}
@Override
public void restore() {
System.out.println("GskCanvas.restore()");
save_count--;
native_restore(snapshot);
}
@Override
public void restoreToCount(int count) {
while (save_count > count) {
restore();
}
}
@Override
public void translate(float dx, float dy) {
System.out.println("GskCanvas.translate(" + dx + ", " + dy + ")");
native_translate(snapshot, dx, dy);
}
@Override
public void rotate(float degrees) {
System.out.println("GskCanvas.rotate(" + degrees + ")");
native_rotate(snapshot, degrees);
}
@Override
@@ -44,7 +52,7 @@ public class GskCanvas extends Canvas {
@Override
public void drawPath(Path path, Paint paint) {
System.out.println("GskCanvas.drawPath(" + path + ", " + paint + ")");
native_drawPath(snapshot, path.mNativePath, paint.skia_paint);
}
@Override
@@ -76,4 +84,9 @@ public class GskCanvas extends Canvas {
protected native void native_drawBitmap(long snapshot, long pixbuf, int x, int y, int width, int height, int color);
protected native void native_drawRect(long snapshot, float left, float top, float right, float bottom, int color);
protected native void native_drawPath(long snapshot, long path, long paint);
protected native void native_translate(long snapshot, float dx, float dy);
protected native void native_rotate(long snapshot, float degrees);
protected native void native_save(long snapshot);
protected native void native_restore(long snapshot);
}

3
src/api-impl/android/graphics/Matrix.java
View File

@@ -323,8 +323,7 @@ public class Matrix {
* M' = M * T(dx, dy)
*/
public boolean preTranslate(float dx, float dy) {
// return native_preTranslate(native_instance, dx, dy);
return false;
return native_preTranslate(native_instance, dx, dy);
}
/**
* Preconcats the matrix with the specified scale.

10
src/api-impl/android/graphics/Paint.java
View File

@@ -30,7 +30,9 @@ public class Paint {
}
public void setAntiAlias(boolean aa) {}
public void setStrokeWidth(float width) {}
public void setStrokeWidth(float width) {
native_set_stroke_width(skia_paint, width);
}
public void setTextSize(float size) {
if(skia_font == 0)
skia_font = native_create_font();
@@ -51,7 +53,9 @@ public class Paint {
public void getTextBounds(char[] text, int index, int count, Rect bounds) {}
public void setFlags(int flags) {}
public void setFilterBitmap(boolean filter) {}
public void setStyle(Style style) {}
public void setStyle(Style style) {
native_set_style(skia_paint, style.nativeInt);
}
public float ascent() {
if(skia_font == 0)
return 0;
@@ -237,4 +241,6 @@ public class Paint {
private static native void native_set_typeface(long skia_font, long skia_typeface);
private static native void native_set_text_size(long skia_font, float size);
private static native float native_measure_text(long skia_font, CharSequence text, int start, int end, long skia_paint);
private static native void native_set_stroke_width(long skia_font, float width);
private static native void native_set_style(long skia_paint, int style);
}