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make android.text.Layout.draw() compatible custom Canvas classes

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TextAndroidCanvas is a proxy canvas class which prevents us from
accessing the GtkSnapshot of the real canvas. To solve this problem, we
call Canvas.drawText() for each line.
This commit is contained in:
Julian Winkler
2025-02-19 20:40:37 +01:00
parent 4bb5dfd86e
commit 24f839f556
7 changed files with 44 additions and 4 deletions
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5
src/api-impl/android/graphics/GskCanvas.java
View File

@@ -136,6 +136,11 @@ public class GskCanvas extends Canvas {
native_concat(snapshot, matrix.native_instance);
}
@Override
public void drawText(CharSequence text, int start, int end, float x, float y, Paint paint) {
drawText(text.toString().substring(start, end), x, y, paint);
}
protected native void native_drawBitmap(long snapshot, long texture, int x, int y, int width, int height, long paint);
protected native void native_drawRect(long snapshot, float left, float top, float right, float bottom, long paint);
protected native void native_drawPath(long snapshot, long path, long paint);

6
src/api-impl/android/text/Layout.java
View File

@@ -2,6 +2,7 @@ package android.text;
import android.graphics.Canvas;
import android.graphics.GskCanvas;
import android.graphics.Paint;
import android.graphics.Path;
public class Layout {
@@ -59,8 +60,6 @@ public class Layout {
}
public int getHeight() {
System.out.println("height = " + native_get_height(layout));
System.out.println("should be " + ((int)(paint.measureText("_") * 3)));
return native_get_height(layout);
}
@@ -68,7 +67,7 @@ public class Layout {
if (canvas instanceof GskCanvas)
native_draw(layout, ((GskCanvas)canvas).snapshot, paint.paint);
else
canvas.drawText(text.toString(), 0, 0, paint);
native_draw_custom_canvas(layout, canvas, paint);
}
public int getParagraphDirection(int line) {
@@ -251,4 +250,5 @@ public class Layout {
protected native void native_set_ellipsize(long layout, int ellipsize_mode, float ellipsize_width);
protected native int native_get_ellipsis_count(long layout, int line);
protected native void native_draw(long layout, long snapshot, long paint);
protected native void native_draw_custom_canvas(long layout, Canvas canvas, Paint paint);
}