Make it possible to add padding around ServoSurface

components/compositing/compositor.rs

@@ -1214,6 +1214,9 @@ impl<Window: WindowMethods> IOCompositor<Window> {
                     &self.embedder_coordinates.framebuffer.to_untyped(),
                 );
 
+                self.window.gl().clear_color(0.0, 0.0, 0.0, 0.0);
+                self.window.gl().clear(gleam::gl::COLOR_BUFFER_BIT);
+
                 // Paint the scene.
                 // TODO(gw): Take notice of any errors the renderer returns!
                 self.webrender.render(size).ok();

ports/libsimpleservo/api/src/lib.rs

@@ -14,16 +14,17 @@ use servo::compositing::windowing::{
 };
 use servo::embedder_traits::resources::{self, Resource, ResourceReaderMethods};
 use servo::embedder_traits::EmbedderMsg;
-use servo::euclid::{TypedPoint2D, TypedScale, TypedSize2D, TypedVector2D};
+use servo::euclid::{TypedPoint2D, TypedRect, TypedScale, TypedSize2D, TypedVector2D};
 use servo::keyboard_types::{Key, KeyState, KeyboardEvent};
 use servo::msg::constellation_msg::TraversalDirection;
 use servo::script_traits::{TouchEventType, TouchId};
 use servo::servo_config::opts;
 use servo::servo_config::prefs::{PrefValue, PREFS};
 use servo::servo_url::ServoUrl;
+use servo::webrender_api::{DevicePixel, FramebufferPixel, ScrollLocation};
 use servo::webvr::{VRExternalShmemPtr, VRMainThreadHeartbeat, VRServiceManager};
-use servo::{self, gl, webrender_api, BrowserId, Servo};
-use std::cell::{Cell, RefCell};
+use servo::{self, gl, BrowserId, Servo};
+use std::cell::RefCell;
 use std::mem;
 use std::os::raw::c_void;
 use std::path::PathBuf;
@@ -41,13 +42,34 @@ pub use servo::embedder_traits::EventLoopWaker;
 pub struct InitOptions {
     pub args: Option<String>,
     pub url: Option<String>,
-    pub width: u32,
-    pub height: u32,
+    pub coordinates: Coordinates,
     pub density: f32,
     pub vr_pointer: Option<*mut c_void>,
     pub enable_subpixel_text_antialiasing: bool,
 }
 
+#[derive(Clone, Debug)]
+pub struct Coordinates {
+    pub viewport: TypedRect<i32, DevicePixel>,
+    pub framebuffer: TypedSize2D<i32, FramebufferPixel>,
+}
+
+impl Coordinates {
+    pub fn new(
+        x: i32,
+        y: i32,
+        width: i32,
+        height: i32,
+        fb_width: i32,
+        fb_height: i32,
+    ) -> Coordinates {
+        Coordinates {
+            viewport: TypedRect::new(TypedPoint2D::new(x, y), TypedSize2D::new(width, height)),
+            framebuffer: TypedSize2D::new(fb_width, fb_height),
+        }
+    }
+}
+
 /// Callbacks. Implemented by embedder. Called by Servo.
 pub trait HostTrait {
     /// Will be called from the thread used for the init call.
@@ -151,8 +173,7 @@ pub fn init(
     let callbacks = Rc::new(ServoCallbacks {
         gl: gl.clone(),
         host_callbacks: callbacks,
-        width: Cell::new(init_opts.width),
-        height: Cell::new(init_opts.height),
+        coordinates: RefCell::new(init_opts.coordinates),
         density: init_opts.density,
         vr_pointer: init_opts.vr_pointer,
         waker,
@@ -271,10 +292,9 @@ impl ServoGlue {
     }
 
     /// Let Servo know that the window has been resized.
-    pub fn resize(&mut self, width: u32, height: u32) -> Result<(), &'static str> {
+    pub fn resize(&mut self, coordinates: Coordinates) -> Result<(), &'static str> {
         info!("resize");
-        self.callbacks.width.set(width);
-        self.callbacks.height.set(height);
+        *self.callbacks.coordinates.borrow_mut() = coordinates;
         self.process_event(WindowEvent::Resize)
     }
 
@@ -283,7 +303,7 @@ impl ServoGlue {
     /// dx/dy are scroll deltas.
     pub fn scroll_start(&mut self, dx: f32, dy: f32, x: i32, y: i32) -> Result<(), &'static str> {
         let delta = TypedVector2D::new(dx, dy);
-        let scroll_location = webrender_api::ScrollLocation::Delta(delta);
+        let scroll_location = ScrollLocation::Delta(delta);
         let event = WindowEvent::Scroll(
             scroll_location,
             TypedPoint2D::new(x, y),
@@ -297,7 +317,7 @@ impl ServoGlue {
     /// dx/dy are scroll deltas.
     pub fn scroll(&mut self, dx: f32, dy: f32, x: i32, y: i32) -> Result<(), &'static str> {
         let delta = TypedVector2D::new(dx, dy);
-        let scroll_location = webrender_api::ScrollLocation::Delta(delta);
+        let scroll_location = ScrollLocation::Delta(delta);
         let event = WindowEvent::Scroll(
             scroll_location,
             TypedPoint2D::new(x, y),
@@ -311,7 +331,7 @@ impl ServoGlue {
     /// dx/dy are scroll deltas.
     pub fn scroll_end(&mut self, dx: f32, dy: f32, x: i32, y: i32) -> Result<(), &'static str> {
         let delta = TypedVector2D::new(dx, dy);
-        let scroll_location = webrender_api::ScrollLocation::Delta(delta);
+        let scroll_location = ScrollLocation::Delta(delta);
         let event =
             WindowEvent::Scroll(scroll_location, TypedPoint2D::new(x, y), TouchEventType::Up);
         self.process_event(event)
@@ -530,8 +550,7 @@ struct ServoCallbacks {
     waker: Box<dyn EventLoopWaker>,
     gl: Rc<dyn gl::Gl>,
     host_callbacks: Box<dyn HostTrait>,
-    width: Cell<u32>,
-    height: Cell<u32>,
+    coordinates: RefCell<Coordinates>,
     density: f32,
     vr_pointer: Option<*mut c_void>,
 }
@@ -565,15 +584,13 @@ impl WindowMethods for ServoCallbacks {
     }
 
     fn get_coordinates(&self) -> EmbedderCoordinates {
-        let fb_size = TypedSize2D::new(self.width.get() as i32, self.height.get() as i32);
-        let pixel_size = TypedSize2D::new(self.width.get() as i32, self.height.get() as i32);
-        let viewport = webrender_api::DeviceIntRect::new(TypedPoint2D::zero(), pixel_size);
+        let coords = self.coordinates.borrow();
         EmbedderCoordinates {
-            viewport,
-            framebuffer: fb_size,
-            window: (pixel_size, TypedPoint2D::new(0, 0)),
-            screen: pixel_size,
-            screen_avail: pixel_size,
+            viewport: coords.viewport,
+            framebuffer: coords.framebuffer,
+            window: (coords.viewport.size, TypedPoint2D::new(0, 0)),
+            screen: coords.viewport.size,
+            screen_avail: coords.viewport.size,
             hidpi_factor: TypedScale::new(self.density),
         }
     }

ports/libsimpleservo/capi/src/lib.rs

@@ -6,7 +6,9 @@
 extern crate log;
 
 use env_logger;
-use simpleservo::{self, gl_glue, EventLoopWaker, HostTrait, InitOptions, ServoGlue, SERVO};
+use simpleservo::{
+    self, gl_glue, Coordinates, EventLoopWaker, HostTrait, InitOptions, ServoGlue, SERVO,
+};
 use std::ffi::{CStr, CString};
 use std::mem;
 use std::os::raw::{c_char, c_void};
@@ -48,8 +50,8 @@ pub struct CHostCallbacks {
 pub struct CInitOptions {
     pub args: *const c_char,
     pub url: *const c_char,
-    pub width: u32,
-    pub height: u32,
+    pub width: i32,
+    pub height: i32,
     pub density: f32,
     pub vr_pointer: *mut c_void,
     pub enable_subpixel_text_antialiasing: bool,
@@ -79,11 +81,12 @@ fn init(
     let url = unsafe { CStr::from_ptr(opts.url) };
     let url = url.to_str().map(|s| s.to_string()).ok();
 
+    let coordinates = Coordinates::new(0, 0, opts.width, opts.height, opts.width, opts.height);
+
     let opts = InitOptions {
         args,
         url,
-        width: opts.width,
-        height: opts.height,
+        coordinates,
         density: opts.density,
         vr_pointer: if opts.vr_pointer.is_null() {
             None
@@ -140,9 +143,12 @@ pub extern "C" fn set_batch_mode(batch: bool) {
 }
 
 #[no_mangle]
-pub extern "C" fn resize(width: u32, height: u32) {
+pub extern "C" fn resize(width: i32, height: i32) {
     debug!("resize {}/{}", width, height);
-    call(|s| s.resize(width, height));
+    call(|s| {
+        let coordinates = Coordinates::new(0, 0, width, height, width, height);
+        s.resize(coordinates)
+    });
 }
 
 #[no_mangle]

ports/libsimpleservo/jniapi/src/lib.rs

@@ -13,7 +13,9 @@ use jni::sys::{jboolean, jfloat, jint, jstring, JNI_TRUE};
 use jni::{errors, JNIEnv, JavaVM};
 use libc::{dup2, pipe, read};
 use log::Level;
-use simpleservo::{self, gl_glue, EventLoopWaker, HostTrait, InitOptions, ServoGlue, SERVO};
+use simpleservo::{
+    self, gl_glue, Coordinates, EventLoopWaker, HostTrait, InitOptions, ServoGlue, SERVO,
+};
 use std::os::raw::{c_char, c_int, c_void};
 use std::sync::Arc;
 use std::thread;
@@ -129,14 +131,13 @@ pub fn Java_org_mozilla_servoview_JNIServo_deinit(_env: JNIEnv, _class: JClass)
 }
 
 #[no_mangle]
-pub fn Java_org_mozilla_servoview_JNIServo_resize(
-    env: JNIEnv,
-    _: JClass,
-    width: jint,
-    height: jint,
-) {
-    debug!("resize {}/{}", width, height);
-    call(&env, |s| s.resize(width as u32, height as u32));
+pub fn Java_org_mozilla_servoview_JNIServo_resize(env: JNIEnv, _: JClass, coordinates: JObject) {
+    let coords = jni_coords_to_rust_coords(&env, coordinates);
+    debug!("resize {:#?}", coords);
+    match coords {
+        Ok(coords) => call(&env, |s| s.resize(coords.clone())),
+        Err(error) => throw(&env, &error),
+    }
 }
 
 #[no_mangle]
@@ -587,6 +588,28 @@ fn new_string(env: &JNIEnv, s: &str) -> Result<jstring, jstring> {
     }
 }
 
+fn jni_coords_to_rust_coords(env: &JNIEnv, obj: JObject) -> Result<Coordinates, String> {
+    let x = get_non_null_field(env, obj, "x", "I")?
+        .i()
+        .map_err(|_| "x not an int")? as i32;
+    let y = get_non_null_field(env, obj, "y", "I")?
+        .i()
+        .map_err(|_| "y not an int")? as i32;
+    let width = get_non_null_field(env, obj, "width", "I")?
+        .i()
+        .map_err(|_| "width not an int")? as i32;
+    let height = get_non_null_field(env, obj, "height", "I")?
+        .i()
+        .map_err(|_| "height not an int")? as i32;
+    let fb_width = get_non_null_field(env, obj, "fb_width", "I")?
+        .i()
+        .map_err(|_| "fb_width not an int")? as i32;
+    let fb_height = get_non_null_field(env, obj, "fb_height", "I")?
+        .i()
+        .map_err(|_| "fb_height not an int")? as i32;
+    Ok(Coordinates::new(x, y, width, height, fb_width, fb_height))
+}
+
 fn get_field<'a>(
     env: &'a JNIEnv,
     obj: JObject,
@@ -638,12 +661,6 @@ fn get_options(env: &JNIEnv, opts: JObject) -> Result<(InitOptions, bool, Option
     let args = get_string(env, opts, "args")?;
     let url = get_string(env, opts, "url")?;
     let log_str = get_string(env, opts, "logStr")?;
-    let width = get_non_null_field(env, opts, "width", "I")?
-        .i()
-        .map_err(|_| "width not an int")? as u32;
-    let height = get_non_null_field(env, opts, "height", "I")?
-        .i()
-        .map_err(|_| "height not an int")? as u32;
     let density = get_non_null_field(env, opts, "density", "F")?
         .f()
         .map_err(|_| "densitiy not a float")? as f32;
@@ -657,11 +674,19 @@ fn get_options(env: &JNIEnv, opts: JObject) -> Result<(InitOptions, bool, Option
     let vr_pointer = get_non_null_field(env, opts, "VRExternalContext", "J")?
         .j()
         .map_err(|_| "VRExternalContext is not a long")? as *mut c_void;
+    let coordinates = get_non_null_field(
+        env,
+        opts,
+        "coordinates",
+        "Lorg/mozilla/servoview/JNIServo$ServoCoordinates;",
+    )?
+    .l()
+    .map_err(|_| "coordinates is not an object")?;
+    let coordinates = jni_coords_to_rust_coords(&env, coordinates)?;
     let opts = InitOptions {
         args,
         url,
-        width,
-        height,
+        coordinates,
         density,
         enable_subpixel_text_antialiasing,
         vr_pointer: if vr_pointer.is_null() {

support/android/apk/servoview/src/main/java/org/mozilla/servoview/JNIServo.java

@@ -30,7 +30,7 @@ public class JNIServo {
 
     public native void performUpdates();
 
-    public native void resize(int width, int height);
+    public native void resize(ServoCoordinates coords);
 
     public native void reload();
 
@@ -69,15 +69,23 @@ public class JNIServo {
     public static class ServoOptions {
       public String args;
       public String url;
-      public int width = 0;
-      public int height = 0;
+      public ServoCoordinates coordinates;
       public float density = 1;
       public boolean enableSubpixelTextAntialiasing = true;
       public long VRExternalContext = 0;
       public String logStr;
       public boolean enableLogs = false;
     }
 
+    public static class ServoCoordinates {
+      public int x = 0;
+      public int y = 0;
+      public int width = 0;
+      public int height = 0;
+      public int fb_width = 0;
+      public int fb_height = 0;
+    }
+
     public interface Callbacks {
         void wakeup();
 

support/android/apk/servoview/src/main/java/org/mozilla/servoview/Servo.java

@@ -13,6 +13,7 @@
 import java.util.concurrent.FutureTask;
 
 import org.freedesktop.gstreamer.GStreamer;
+import org.mozilla.servoview.JNIServo.ServoCoordinates;
 import org.mozilla.servoview.JNIServo.ServoOptions;
 
 public class Servo {
@@ -91,8 +92,8 @@ public void setBatchMode(boolean mode) {
         mRunCallback.inGLThread(() -> mJNI.setBatchMode(mode));
     }
 
-    public void resize(int width, int height) {
-        mRunCallback.inGLThread(() -> mJNI.resize(width, height));
+    public void resize(ServoCoordinates coords) {
+        mRunCallback.inGLThread(() -> mJNI.resize(coords));
     }
 
     public void refresh() {