app/binding: implement crude syndraw/enddraw/flushdraw sequence

Signed-off-by: Marcus Fritzsch <marcus_fritzsch@mentor.com>

3 files changed, 41 insertions, 7 deletions

diff --git a/src/afb_binding_api.cpp b/src/afb_binding_api.cpp
index 7554cf0..f49d826 100644
--- a/src/afb_binding_api.cpp
+++ b/src/afb_binding_api.cpp
@@ -64,7 +64,12 @@ binding_api::result_type binding_api::deactivate_surface(char const* drawing_nam
 
 binding_api::result_type binding_api::enddraw(char const* drawing_name) {
    logdebug("%s drawing_name %s", __func__, drawing_name);
-   return Err<json_object*>("not implemented");
+   auto r = this->app->enddraw(drawing_name);
+   if (r != nullptr) {
+      logdebug("%s failed with error: %s", __func__, r);
+      return Err<json_object *>(r);
+   }
+   return Ok(json_object_new_object());
 }
 
 binding_api::result_type binding_api::list_drawing_names() {
diff --git a/src/app.cpp b/src/app.cpp
index 596391c..ee02717 100644
--- a/src/app.cpp
+++ b/src/app.cpp
@@ -444,7 +444,8 @@ char const *App::activate_surface(char const *drawing_name) {
       state.sub = -1;
       state.s = LayoutState::Single;
 
-      this->emit_flushdraw(drawing_name);
+      //////this->emit_flushdraw(drawing_name);
+      this->pending_end_draw.push_back(state.main);
    } else {
       bool can_split = this->can_split(state, *surface_id);
 
@@ -459,9 +460,11 @@ char const *App::activate_surface(char const *drawing_name) {
                this->activate(*surface_id);
                state.sub = *surface_id;
 
+               this->pending_end_draw.push_back(state.main);
+               this->pending_end_draw.push_back(state.sub);
                // Should wait for EndDraw event...
-               this->emit_flushdraw(drawing_name);
-               this->emit_flushdraw(main.c_str());
+               //////this->emit_flushdraw(drawing_name);
+               //////this->emit_flushdraw(main.c_str());
             }
          } else {
             this->emit_syncdraw(drawing_name);
@@ -474,7 +477,8 @@ char const *App::activate_surface(char const *drawing_name) {
             state.sub = -1;
             state.s = LayoutState::Single;
 
-            this->emit_flushdraw(drawing_name);
+            //////this->emit_flushdraw(drawing_name);
+            this->pending_end_draw.push_back(state.main);
          }
       }
    }
@@ -527,7 +531,8 @@ char const *App::deactivate_surface(char const *drawing_name) {
          state.sub = -1;
          state.s = LayoutState::Single;
 
-         this->emit_flushdraw(sub.c_str());
+         //////this->emit_flushdraw(sub.c_str());
+         this->pending_end_draw.push_back(state.sub);
       } else {
          this->deactivate(*surface_id);
          state.main = -1;
@@ -542,7 +547,8 @@ char const *App::deactivate_surface(char const *drawing_name) {
       state.sub = -1;
       state.s = LayoutState::Single;
 
-      this->emit_flushdraw(main.c_str());
+      //////this->emit_flushdraw(main.c_str());
+      this->pending_end_draw.push_back(state.main);
    } else {
       return "Surface is not active";
    }
@@ -553,6 +559,20 @@ char const *App::deactivate_surface(char const *drawing_name) {
    return nullptr;
 }
 
+char const *App::enddraw(char const *drawing_name) {
+   for (unsigned i = 0, iend = this->pending_end_draw.size(); i < iend; i++) {
+      auto n = this->lookup_name(this->pending_end_draw[i]);
+      if (n && *n == drawing_name) {
+         std::swap(this->pending_end_draw[i], this->pending_end_draw[iend - 1]);
+         this->pending_end_draw.resize(iend - 1);
+         // XXX: Please tell the compositor to thaw the surface...
+         this->emit_flushdraw(drawing_name);
+         return nullptr;
+      }
+   }
+   return "No EndDraw pending for surface";
+}
+
 //                      _          _   _____                 _
 //  _ __  _ __ _____  _(_) ___  __| | | ____|_   _____ _ __ | |_ ___
 // | '_ \| '__/ _ \ \/ / |/ _ \/ _` | |  _| \ \ / / _ \ '_ \| __/ __|
@@ -583,6 +603,11 @@ void App::surface_created(uint32_t surface_id) {
 void App::surface_removed(uint32_t surface_id) {
    logdebug("surface_id is %u", surface_id);
 
+   auto drawing_name = this->lookup_name(surface_id);
+   if (drawing_name) {
+      this->deactivate_surface(drawing_name->c_str());
+   }
+
    this->id_alloc.remove_id(surface_id);
 }
 
diff --git a/src/app.hpp b/src/app.hpp
index 2e5478b..e661794 100644
--- a/src/app.hpp
+++ b/src/app.hpp
@@ -138,6 +138,8 @@ struct App {
          x, false, std::memory_order_consume);
    }
 
+   std::vector<int> pending_end_draw;
+
    explicit App(wl::display *d);
    ~App();
 
@@ -162,6 +164,8 @@ struct App {
    char const *activate_surface(char const *drawing_name);
    char const *deactivate_surface(char const *drawing_name);
 
+   char const *enddraw(char const *drawing_name);
+
    // Events from the compositor we are interested in
    void surface_created(uint32_t surface_id);
    void surface_removed(uint32_t surface_id);