start implementing Drawable using underlying GdkPaintable

meson.build

@@ -80,6 +80,7 @@ libtranslationlayer_so = shared_library('translation_layer_main', [
                                                                   	'src/api-impl-jni/database/android_database_SQLiteCommon.c',
                                                                   	'src/api-impl-jni/database/android_database_SQLiteConnection.c',
                                                                   	'src/api-impl-jni/graphics/android_graphics_BitmapFactory.c',
+                                                                  	'src/api-impl-jni/graphics/android_graphics_drawable_Drawable.c',
                                                                   	'src/api-impl-jni/graphics/android_graphics_Typeface.c',
                                                                   	'src/api-impl-jni/media/android_media_MediaCodec.c',
                                                                   	'src/api-impl-jni/android_content_res_AssetManager.c',

src/api-impl-jni/generated_headers/android_graphics_drawable_Drawable.h

@@ -0,0 +1,21 @@
+/* DO NOT EDIT THIS FILE - it is machine generated */
+#include <jni.h>
+/* Header for class android_graphics_drawable_Drawable */
+
+#ifndef _Included_android_graphics_drawable_Drawable
+#define _Included_android_graphics_drawable_Drawable
+#ifdef __cplusplus
+extern "C" {
+#endif
+/*
+ * Class:     android_graphics_drawable_Drawable
+ * Method:    native_paintable_from_path
+ * Signature: (Ljava/lang/String;)J
+ */
+JNIEXPORT jlong JNICALL Java_android_graphics_drawable_Drawable_native_1paintable_1from_1path
+  (JNIEnv *, jclass, jstring);
+
+#ifdef __cplusplus
+}
+#endif
+#endif

src/api-impl-jni/generated_headers/android_view_View.h

@@ -279,6 +279,14 @@ JNIEXPORT void JNICALL Java_android_view_View_native_1layout
 JNIEXPORT void JNICALL Java_android_view_View_native_1requestLayout
   (JNIEnv *, jobject, jlong);
 
+/*
+ * Class:     android_view_View
+ * Method:    native_setBackgroundDrawable
+ * Signature: (JJ)V
+ */
+JNIEXPORT void JNICALL Java_android_view_View_native_1setBackgroundDrawable
+  (JNIEnv *, jobject, jlong, jlong);
+
 /*
  * Class:     android_view_View
  * Method:    nativeInvalidate

src/api-impl-jni/graphics/android_graphics_drawable_Drawable.c

@@ -0,0 +1,13 @@
+#include <gdk/gdk.h>
+
+#include "../defines.h"
+#include "../generated_headers/android_graphics_drawable_Drawable.h"
+
+JNIEXPORT jlong JNICALL Java_android_graphics_drawable_Drawable_native_1paintable_1from_1path(JNIEnv *env, jclass class, jstring pathStr) {
+	const char *path = (*env)->GetStringUTFChars(env, pathStr, NULL);
+
+	GdkPaintable *paintable = GDK_PAINTABLE(gdk_texture_new_from_filename(path, NULL));
+
+	(*env)->ReleaseStringUTFChars(env, pathStr, path);
+	return _INTPTR(paintable);
+}

src/api-impl-jni/views/android_view_View.c

@@ -405,3 +405,9 @@ JNIEXPORT void JNICALL Java_android_view_View_setBackgroundColor(JNIEnv *env, jo
 
 	gtk_style_context_add_provider(gtk_widget_get_style_context(gtk_widget_get_parent(widget)), GTK_STYLE_PROVIDER(css_provider), GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
 }
+
+JNIEXPORT void JNICALL Java_android_view_View_native_1setBackgroundDrawable(JNIEnv *env, jobject this, jlong widget_ptr, jlong paintable_ptr) {
+	GtkWidget *widget = GTK_WIDGET(_PTR(widget_ptr));
+	GdkPaintable *paintable = GDK_PAINTABLE(_PTR(paintable_ptr));
+	wrapper_widget_set_background(WRAPPER_WIDGET(gtk_widget_get_parent(widget)), paintable);
+}

src/api-impl-jni/widgets/WrapperWidget.c

@@ -92,6 +92,8 @@ void wrapper_widget_allocate(GtkWidget *widget, int width, int height, int basel
 	gtk_widget_size_allocate(wrapper->child, &allocation, baseline);
 	if (wrapper->sk_area)
 		gtk_widget_size_allocate(wrapper->sk_area, &allocation, baseline);
+	if (wrapper->background)
+		gtk_widget_size_allocate(wrapper->background, &allocation, baseline);
 }
 
 static void wrapper_widget_class_init(WrapperWidgetClass *class)
@@ -172,3 +174,12 @@ void wrapper_widget_set_layout_params(WrapperWidget *wrapper, int width, int hei
 	wrapper->layout_width = width;
 	wrapper->layout_height = height;
 }
+
+void wrapper_widget_set_background(WrapperWidget *wrapper, GdkPaintable *paintable)
+{
+	if (!wrapper->background) {
+		wrapper->background = gtk_picture_new();
+		gtk_widget_insert_after(wrapper->background, GTK_WIDGET(wrapper), NULL);
+	}
+	gtk_picture_set_paintable(GTK_PICTURE(wrapper->background), paintable);
+}

src/api-impl-jni/widgets/WrapperWidget.h

@@ -11,6 +11,7 @@ struct _WrapperWidget
 	GtkWidget parent_instance;
 	GtkWidget *child;
 	GtkWidget *sk_area;
+	GtkWidget *background;
 	JavaVM *jvm;
 	jobject jobj;
 	jobject canvas;
@@ -31,6 +32,7 @@ void wrapper_widget_set_child(WrapperWidget *parent, GtkWidget *child);
 void wrapper_widget_set_jobject(WrapperWidget *wrapper, JNIEnv *env, jobject jobj);
 void wrapper_widget_queue_draw(WrapperWidget *wrapper);
 void wrapper_widget_set_layout_params(WrapperWidget *wrapper, int width, int height);
+void wrapper_widget_set_background(WrapperWidget *wrapper, GdkPaintable *paintable);
 
 void _setOnTouchListener(JNIEnv *env, jobject this, GtkWidget *widget, jobject on_touch_listener);
 

src/api-impl/android/content/res/Resources.java

@@ -19,6 +19,7 @@ package android.content.res;
 import android.content.Context;
 import android.content.pm.ActivityInfo;
 import android.icu.text.PluralRules;
+import android.graphics.drawable.ColorDrawable;
 // import android.graphics.Movie;
 import android.graphics.drawable.Drawable;
 // import android.graphics.drawable.ColorDrawable;
@@ -48,7 +49,6 @@ import org.xmlpull.v1.XmlPullParser;
 import org.xmlpull.v1.XmlPullParserException;
 
 class Movie {}
-class ColorDrawable {}
 
 class ConstantState {}
 
@@ -2017,7 +2017,7 @@ public class Resources {
 		 final String name = getResourceName(id);
 		 if (name != null) android.util.Log.d("PreloadDrawable", name);
 	     }
-	 }
+	 }*/
 
 	 boolean isColorDrawable = false;
 	 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT &&
@@ -2027,6 +2027,8 @@ public class Resources {
 	 final long key = isColorDrawable ? value.data :
 		 (((long) value.assetCookie) << 32) | value.data;
 
+	 Drawable dr = null;
+	 /*
 	 Drawable dr = getCachedDrawable(isColorDrawable ? mColorDrawableCache : mDrawableCache, key);
 
 	 if (dr != null) {
@@ -2040,7 +2042,7 @@ public class Resources {
 	 }
 	 if (cs != null) {
 	     dr = cs.newDrawable(this);
-	 } else {
+	 } else*/ {
 	     if (isColorDrawable) {
 		 dr = new ColorDrawable(value.data);
 	     }
@@ -2089,8 +2091,7 @@ public class Resources {
 			 InputStream is = mAssets.openNonAsset(
 				 value.assetCookie, file, AssetManager.ACCESS_STREAMING);
 	 //                System.out.println("Opened file " + file + ": " + is);
-			 dr = null/*Drawable.createFromResourceStream(this, value, is,
-				 file, null)* /;
+			 dr = Drawable.createFromResourceStream(this, value, is, file, null);
 			 is.close();
 	 //                System.out.println("Created stream: " + dr);
 		     } catch (Exception e) {
@@ -2108,7 +2109,7 @@ public class Resources {
 
 	 if (dr != null) {
 	     dr.setChangingConfigurations(value.changingConfigurations);
-	     cs = dr.getConstantState();
+	     /* cs = dr.getConstantState();
 	     if (cs != null) {
 		 if (mPreloading) {
 		     final int changingConfigs = cs.getChangingConfigurations();
@@ -2145,12 +2146,10 @@ public class Resources {
 			 }
 		     }
 		 }
-	     }
+	     }*/
 	 }
 
 	 return dr;
-     */
-		return null;
 	}
 
 	private Drawable getCachedDrawable(

src/api-impl/android/graphics/drawable/Drawable.java

@@ -1,17 +1,35 @@
 package android.graphics.drawable;
 
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+import org.xmlpull.v1.XmlPullParser;
+import org.xmlpull.v1.XmlPullParserException;
+
 import android.content.res.ColorStateList;
 import android.content.res.Resources;
+import android.content.res.XmlResourceParser;
 import android.graphics.Canvas;
 import android.graphics.ColorFilter;
 import android.graphics.PorterDuff;
 import android.graphics.Rect;
+import android.util.TypedValue;
 
-public abstract class Drawable {
+public class Drawable {
 	public static interface Callback {}
 
 	private Rect mBounds = new Rect();
 	private int[] mStateSet = new int[0];
+	public long paintable;
+
+	public Drawable() {}
+
+	public Drawable(long paintable) {
+		this.paintable = paintable;
+	}
 
 	public int getChangingConfigurations() {
 		return 0;
@@ -38,7 +56,7 @@ public abstract class Drawable {
 		return mBounds;
 	}
 
-	public abstract void draw(Canvas canvas);
+	public void draw(Canvas canvas) {}
 
 	public boolean setState(int[] stateSet) {
 		this.mStateSet = stateSet;
@@ -89,4 +107,36 @@ public abstract class Drawable {
 	public void setTintMode(PorterDuff.Mode tintMode) {}
 
 	public boolean isProjected () {return false;}
+
+	public static Drawable createFromXml(Resources resources, XmlResourceParser parser) throws XmlPullParserException, IOException {
+		int type;
+		while ((type=parser.next()) != XmlPullParser.START_TAG && type != XmlPullParser.END_DOCUMENT);
+		if (type != XmlPullParser.START_TAG)
+			throw new XmlPullParserException("No start tag found");
+		if ("selector".equals(parser.getName())) {
+			StateListDrawable drawable = new StateListDrawable();
+			drawable.inflate(resources, parser, parser, null);
+			return drawable;
+		}
+		return null;
+	}
+
+	public static Drawable createFromResourceStream(Resources resources, TypedValue value, InputStream is, String file,
+			Object object) {
+		Path path = Paths.get(android.os.Environment.getExternalStorageDirectory().getPath(), file);
+		if (!Files.exists(path)) {
+			try (InputStream inputStream = ClassLoader.getSystemClassLoader().getResourceAsStream(file)) {
+				if (inputStream != null) {
+					Files.createDirectories(path.getParent());
+					Files.copy(inputStream, path);
+				}
+			} catch (IOException e) {
+				e.printStackTrace();
+			}
+		}
+		long paintable = native_paintable_from_path(path.toString());
+		return new Drawable(paintable);
+	}
+
+	protected static native long native_paintable_from_path(String path);
 }

src/api-impl/android/graphics/drawable/StateListDrawable.java

@@ -1,6 +1,15 @@
 package android.graphics.drawable;
 
+import java.io.IOException;
+
+import org.xmlpull.v1.XmlPullParser;
+import org.xmlpull.v1.XmlPullParserException;
+
+import android.content.res.Resources;
+import android.content.res.Resources.Theme;
 import android.graphics.Canvas;
+import android.util.AttributeSet;
+import android.util.Slog;
 
 public class StateListDrawable extends Drawable {
 
@@ -12,4 +21,15 @@ public class StateListDrawable extends Drawable {
 
 	public void addState(int[] stateSet, Drawable drawable) {}
 
+    public void inflate(Resources resources, XmlPullParser parser, AttributeSet attrs, Theme theme) throws XmlPullParserException, IOException {
+		while (parser.next() != XmlPullParser.END_DOCUMENT) {
+			if ("item".equals(parser.getName())) {
+				int resid = attrs.getAttributeResourceValue("http://schemas.android.com/apk/res/android", "drawable", -1);
+				Drawable drawable = resources.getDrawable(resid, theme);
+				this.paintable = drawable.paintable;
+				Slog.i("StateListDrawable", "item resid = " + resid + ", paintable = " + drawable.paintable);
+			}
+		}
+    }
+	
 }

src/api-impl/android/view/View.java

@@ -930,6 +930,7 @@ public class View extends Object {
 	protected native void native_measure(long widget, int widthMeasureSpec, int heightMeasureSpec, boolean isComplex);
 	protected native void native_layout(long widget, int l, int t, int r, int b);
 	protected native void native_requestLayout(long widget);
+	protected native void native_setBackgroundDrawable(long widget, long paintable);
 
 	// --- stubs
 
@@ -1005,8 +1006,8 @@ public class View extends Object {
 		this.visibility = visibility;
 	}
 	public void setPadding(int left, int top, int right, int bottom) {}
-	public void setBackgroundResource(int resid) {
-//		Slog.w(TAG, "*** setBackgroundResource: " + getString(resid));
+	public void setBackgroundResource(int resid) throws Exception {
+		setBackgroundDrawable(getResources().getDrawable(resid));
 	}
 
 	public void getHitRect(Rect outRect) {}
@@ -1243,7 +1244,9 @@ public class View extends Object {
 		layout(left + offset, top, right + offset, bottom);
 	}
 
-	public void setBackgroundDrawable(Drawable backgroundDrawable) {}
+	public void setBackgroundDrawable(Drawable backgroundDrawable) {
+		native_setBackgroundDrawable(widget, backgroundDrawable != null ? backgroundDrawable.paintable : 0);
+	}
 
 	public int getOverScrollMode() {return 0;}