+namespace {
+
+// This can fix the HomeScreen...
+void redraw_fix(App *app, std::unique_ptr<genivi::surface> &s, int x, int y,
+ int w, int h) {
+ { // XXX: Work around weston redraw issues
+ // trigger an update by changing the source dimensions!
+ s->set_configuration(w + 1, h);
+ s->set_source_rectangle(0, 0, w + 1, h);
+ s->set_destination_rectangle(x, y, w + 1, h);
+ app->controller->commit_changes();
+ app->display->roundtrip();
+
+ // wait some time, for the process to do its thing...
+ using namespace std::chrono_literals;
+ std::this_thread::sleep_for(100ms);
+
+ // Set a different size then what we actually want.
+ s->set_configuration(w, h);
+ s->set_source_rectangle(0, 0, w, h);
+ s->set_destination_rectangle(x, y, w, h);
+ app->controller->commit_changes();
+ app->display->roundtrip();
+ }
+}
+
+} // namespace
+
+void App::surface_set_layout_full(uint32_t surface_id) {
+ if (!this->controller->surface_exists(surface_id)) {
+ logerror("Surface %d does not exist", int(surface_id));
+ return;
+ }
+
+ auto o_layer_id = this->layers.get_layer_id(surface_id);
+
+ if (!o_layer_id) {
+ logerror("Surface %d is not associated with any layer!", int(surface_id));
+ return;
+ }
+
+ uint32_t layer_id = o_layer_id.value();
+ logdebug("surface_set_layout for surface %u on layer %u", surface_id,
+ layer_id);
+
+ auto const &layer = this->layers.get_layer(layer_id);
+ auto rect = layer.value().rect;
+ auto &s = this->controller->surfaces[surface_id];
+
+ int x = rect.x;
+ int y = rect.y;
+ int w = rect.w;
+ int h = rect.h;
+
+ // less-than-0 values refer to MAX + 1 - $VALUE
+ // e.g. MAX is either screen width or height
+ if (w < 0) {
+ w = this->controller->output_size.w + 1 + w;
+ }
+ if (h < 0) {
+ h = this->controller->output_size.h + 1 + h;
+ }
+
+ // configure surface to wxh dimensions
+ s->set_configuration(w, h);
+
+ // set source reactangle, even if we should not need to set it.
+ s->set_source_rectangle(0, 0, w, h);
+
+ // set destination to the display rectangle
+ s->set_destination_rectangle(x, y, w, h);
+
+ s->set_visibility(0);
+ s->set_opacity(256);
+
+ this->controller->commit_changes();
+ this->display->roundtrip();
+
+ //redraw_fix(this, s, x, y, w, h);
+
+ logdebug("Surface %u now with rect { %d, %d, %d, %d }",
+ surface_id, x, y, w, h);
+}
+
+void App::surface_set_layout_split(uint32_t surface_id, uint32_t sub_surface_id) {
+ if (!this->controller->surface_exists(surface_id)) {
+ logerror("Surface %d does not exist", int(surface_id));
+ return;
+ }
+
+ auto o_layer_id = this->layers.get_layer_id(surface_id);
+
+ if (!o_layer_id) {
+ logerror("Surface %d is not associated with any layer!", int(surface_id));
+ return;
+ }
+
+ uint32_t layer_id = o_layer_id.value();
+ logdebug("surface_set_layout for surface %u on layer %u", surface_id,
+ layer_id);
+
+ auto const &layer = this->layers.get_layer(layer_id);
+ auto rect = layer.value().rect;
+ auto &s = this->controller->surfaces[surface_id];
+ auto &ss = this->controller->surfaces[sub_surface_id];
+
+ int x = rect.x;
+ int y = rect.y;
+ int w = rect.w;
+ int h = rect.h;
+
+ this->state.main = surface_id;
+ this->state.sub = sub_surface_id;
+ this->state.state = LayoutState::LayoutSplit;
+
+ // less-than-0 values refer to MAX + 1 - $VALUE
+ // e.g. MAX is either screen width or height
+ if (w < 0) {
+ w = this->controller->output_size.w + 1 + w;
+ }
+ if (h < 0) {
+ h = this->controller->output_size.h + 1 + h;
+ }
+
+ int x_off = 0;
+ int y_off = 0;
+
+ // split along major axis
+ if (w > h) {
+ w /= 2;
+ x_off = w;
+ } else {
+ h /= 2;
+ y_off = h;
+ }
+
+ // configure surface to wxh dimensions
+ s->set_configuration(w, h);
+ // set source reactangle, even if we should not need to set it.
+ s->set_source_rectangle(0, 0, w, h);
+ // set destination to the display rectangle
+ s->set_destination_rectangle(x, y, w, h);
+
+ s->set_visibility(1);
+ s->set_opacity(256);
+
+ // configure surface to wxh dimensions
+ ss->set_configuration(w, h);
+ // set source reactangle, even if we should not need to set it.
+ ss->set_source_rectangle(0, 0, w, h);
+ // set destination to the display rectangle
+ ss->set_destination_rectangle(x+x_off, y+y_off, w, h);
+
+ ss->set_visibility(1);
+ ss->set_opacity(256);
+
+ this->controller->commit_changes();
+ this->display->roundtrip();
+
+ //redraw_fix(this, s, x, y, w, h);
+ //redraw_fix(this, ss, x+x_off, y+y_off, w, h);
+
+ logdebug("Surface %u now on layer %u with rect { %d, %d, %d, %d }",
+ surface_id, layer_id, x, y, w, h);
+}
+
+char const *App::activate_surface(char const *drawing_name) {
+ int surface_id = -1;
+
+ {
+ auto oid = this->lookup_id(drawing_name);
+ if (oid) {
+ surface_id = oid.value();
+ } else {
+ return "Surface does not exist";
+ }
+ }
+
+ if (!this->controller->surface_exists(surface_id)) {
+ return "Surface does not exist";
+ }
+
+ if (this->state.main == surface_id || this->state.sub == surface_id) {
+ return "Surface already active";
+ }
+
+ // This should involve a policy check, but as we do not (yet) have
+ // such a thing, we will just switch to this surface.
+ // XXX: input focus missing!!1
+
+ if (this->state != LayoutState{}) {
+ switch (this->state.state) {
+ case LayoutState::LayoutSingle:
+ if (this->can_split(surface_id)) {
+ this->surface_set_layout_split(this->state.main, surface_id);
+ return nullptr;
+ }
+ break;
+
+ case LayoutState::LayoutSplit:
+ if (this->can_split(surface_id)) {
+ this->deactivate(this->state.sub);
+ this->surface_set_layout_split(this->state.main, surface_id);
+ }
+
+ case LayoutState::LayoutNone:
+ break;
+ }
+ }
+
+ // Make it visible, no (or little effect) if already visible
+ auto &s = this->controller->surfaces[surface_id];
+
+ // Set all others invisible
+ for (auto &i : this->controller->surfaces) {
+ auto &si = this->controller->sprops[i.second->id];
+ if (si.id != s->id && si.visibility != 0 &&
+ int(si.id) != this->layers.main_surface) {
+ this->deactivate(si.id);
+ }
+ }
+ this->activate(s->id);
+
+ // commit changes
+ this->controller->commit_changes();
+ this->display->flush();
+
+ this->state.main = surface_id;
+ this->state.state = LayoutState::LayoutSingle;
+
+ // no error
+ return nullptr;
+}
+
+char const *App::deactivate_surface(char const *drawing_name) {
+ int surface_id = -1;
+
+ {
+ auto oid = this->lookup_id(drawing_name);
+ if (oid) {
+ surface_id = oid.value();
+ } else {
+ return "Surface does not exist";
+ }
+ }
+
+ if (surface_id == this->layers.main_surface) {
+ return "Cannot deactivate main_surface";
+ }
+
+ switch (this->state.state) {
+ case LayoutState::LayoutSplit:
+ if (surface_id == this->state.main) {
+ this->deactivate(surface_id);
+ this->surface_set_layout_full(this->state.main);
+
+ this->deactivate(this->state.sub);
+ this->surface_set_layout_full(this->state.sub);
+
+ this->state.main = -1;
+ this->state.sub = -1;
+ this->state.state = LayoutState::LayoutSingle;
+ } else if (surface_id == this->state.sub) {
+ this->deactivate(surface_id);
+ this->surface_set_layout_full(this->state.sub);
+ this->surface_set_layout_full(this->state.main);
+
+ // XXX send syndraw events....
+
+ this->state.sub = -1;
+ this->state.state = LayoutState::LayoutSingle;
+ }
+ break;
+
+ case LayoutState::LayoutSingle:
+ this->deactivate(surface_id);
+ this->state.main = -1;
+ this->state.sub = -1;
+ break;
+
+ case LayoutState::LayoutNone:
+ break;
+ }
+
+
+ this->controller->commit_changes();
+ this->display->flush();
+
+ return nullptr;
+}
+