main: rename connection, streamline init_layout and error handling

[staging/windowmanager.git] / src / main.cpp

diff --git a/src/main.cpp b/src/main.cpp
index 0acf201..52d6b32 100644 (file)
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -3,51 +3,62 @@
 
 #include <unistd.h>
 
-#include <stdlib.h>
-#include <string.h>
-
-#include <map>
-#include <memory>
-#include <string>
-#include <vector>
-
 #include <sys/poll.h>
 
-struct conn {
+struct connection {
    std::vector<std::unique_ptr<wl::output>> outputs;
    std::unique_ptr<genivi::controller> c;
 };
 
 namespace {
-int check_events(struct wl::display *d, struct conn *c, int fd) {
-   struct pollfd pfd[2] = {{.fd = d->get_fd(), .events = POLLIN, .revents = 0},
+//       _               _                            _        ____
+//   ___| |__   ___  ___| | __    _____   _____ _ __ | |_ ___ / /\ \
+//  / __| '_ \ / _ \/ __| |/ /   / _ \ \ / / _ \ '_ \| __/ __| |  | |
+// | (__| | | |  __/ (__|   <   |  __/\ V /  __/ | | | |_\__ \ |  | |
+//  \___|_| |_|\___|\___|_|\_\___\___| \_/ \___|_| |_|\__|___/ |  | |
+//                          |_____|                           \_\/_/
+int check_events(struct wl::display &d, struct connection &c, int fd) {
+   struct pollfd pfd[2] = {{.fd = d.get_fd(), .events = POLLIN, .revents = 0},
                            {.fd = fd, .events = POLLIN, .revents = 0}};
 
-   d->flush();
+   d.flush();
 
    if (poll(pfd, fd != -1 ? 2 : 1, -1) != -1 && errno != EINTR) {
       int ret = 0;
 
-      if (pfd[0].revents & POLLIN) {
-         ret = d->dispatch();
+      if ((pfd[0].revents & POLLIN) != 0) {
+         ret = d.dispatch();
       }
 
-      if (ret == -1)
+      if (ret == -1) {
          return ret;
+      }
 
-      if (fd != -1 && (pfd[1].revents & POLLIN)) {
+      if (fd != -1 && ((pfd[1].revents & POLLIN) != 0)) {
          char buf[256];
 
          // read all there is ...
-         while (read(pfd[1].fd, buf, sizeof(buf)) == sizeof(buf))
+         while (read(pfd[1].fd, buf, sizeof(buf)) == sizeof(buf)) {
             ;
+         }
 
          // Display current status
-         if (!c->c->surfaces.empty()) {
+         if (!c.c->surfaces.empty()) {
             puts("Surfaces:");
-            for (auto const &i : c->c->surfaces) {
-               struct genivi::rect const &r = i.second->dst_rect;
-               struct genivi::size const &s = i.second->size;
+            for (auto const &i : c.c->surfaces) {
+               auto const &r = i.second->dst_rect;
+               auto const &s = i.second->size;
+               printf("%d [%ux%u] (%ux%u@%dx%d), ", i.first, s.w, s.h, r.w, r.h,
+                      r.x, r.y);
+            }
+            puts("\b\b ");
+         }
+
+         if (!c.c->layers.empty()) {
+            puts("Layers:");
+            for (auto const &i : c.c->layers) {
+               auto const &r = i.second->dst_rect;
+               auto const &s = i.second->size;
                printf("%d [%ux%u] (%ux%u@%dx%d), ", i.first, s.w, s.h, r.w, r.h,
                       r.x, r.y);
             }
@@ -58,48 +69,103 @@ int check_events(struct wl::display *d, struct conn *c, int fd) {
 
    return 0;
 }
-}
 
-int main(int argc, char **argv) {
+//  _       _ _       _                         _    ____
+// (_)_ __ (_) |_    | | __ _ _   _  ___  _   _| |_ / /\ \
+// | | '_ \| | __|   | |/ _` | | | |/ _ \| | | | __| |  | |
+// | | | | | | |_    | | (_| | |_| | (_) | |_| | |_| |  | |
+// |_|_| |_|_|\__|___|_|\__,_|\__, |\___/ \__,_|\__| |  | |
+//              |_____|       |___/                 \_\/_/
+char const *init_layout(struct connection &c) {
+   if (!c.c) {
+      return "ivi_controller global not available";
+   }
+
+   if (c.outputs.empty()) {
+      return "no output was set up!";
+   }
+
+   auto &o = c.outputs.front();
+   auto &s = c.c->screens.begin()->second;
+   auto &layers = c.c->layers;
+
+   // XXX: Write output dimensions to ivi controller...
+   c.c->output_size = genivi::size{uint32_t(o->width), uint32_t(o->height)};
+
+   // Clear scene
+   layers.clear();
+
+   // Clear screen
+   s->clear();
+
+   // Setup our dummy scene...
+   c.c->layer_create(100, 0, 0);   // bottom layer, anything else
+   c.c->layer_create(1000, 0, 0);  // top layer, mandelbrot
+
+   auto &l100 = c.c->layers[100];
+   auto &l1k = c.c->layers[1000];
+
+   // Set layers fullscreen
+   l100->set_destination_rectangle(0, 0, o->width, o->height);
+   l1k->set_destination_rectangle(0, 0, o->width, o->height);
+   l100->set_visibility(1);
+   l1k->set_visibility(1);
+
+   // Add layers to screen
+   s->set_render_order({100, 1000});
+
+   c.c->commit_changes();
+   // Note: this does not flush the display!
+
+   return nullptr;
+}
+}  // namespace
+
+//                  _        ____
+//  _ __ ___   __ _(_)_ __  / /\ \
+// | '_ ` _ \ / _` | | '_ \| |  | |
+// | | | | | | (_| | | | | | |  | |
+// |_| |_| |_|\__,_|_|_| |_| |  | |
+//                          \_\/_/
+int main(int /*argc*/, char ** /*argv*/) {
    lognotice("WinMan ver. %s", WINMAN_VERSION_STRING);
 
-   if (!getenv("XDG_RUNTIME_DIR"))
+   if (getenv("XDG_RUNTIME_DIR") == nullptr) {
       fatal("Environment variable XDG_RUNTIME_DIR not set");
+   }
 
-   auto d = std::make_unique<wl::display>();
-   if (!d->ok())
+   struct wl::display d {};
+   if (!d.ok()) {
       fatal("Could not connect to compositor");
+   }
 
-   struct conn c = {};
+   struct connection c {};
 
-   d->r->add_global_handler(
-      "ivi_controller", [&](wl_registry *r, uint32_t name, uint32_t v) {
+   d.r.add_global_handler(
+      "ivi_controller", [&c](wl_registry *r, uint32_t name, uint32_t v) {
          c.c = std::make_unique<genivi::controller>(r, name, v);
       });
 
-   d->r->add_global_handler(
-      "wl_output", [&](wl_registry *r, uint32_t name, uint32_t v) {
+   d.r.add_global_handler(
+      "wl_output", [&c](wl_registry *r, uint32_t name, uint32_t v) {
          c.outputs.emplace_back(std::make_unique<wl::output>(r, name, v));
       });
 
    // First level objects
-   d->roundtrip();
+   d.roundtrip();
    // Second level objects
-   d->roundtrip();
+   d.roundtrip();
    // Third level objects
-   d->roundtrip();
+   d.roundtrip();
 
-   if (!c.c)
-      fatal("ivi_controller global not available");
-
-   if (c.outputs.empty())
-      fatal("no output was set up!");
+   if (char const *e = init_layout(c)) {
+      fatal("Could not init layout: %s", e);
+   }
 
-   while (check_events(d.get(), &c, STDIN_FILENO) != -1) {
+   while (check_events(d, c, STDIN_FILENO) != -1) {
       c.c->execute_pending();
+      d.flush();
    }
 
-   d->roundtrip();
-
    return 0;
 }