add linux support

src/app.cpp

@@ -23,6 +23,9 @@ void async_lock();
 void win32_async_swap();
 void async_unlock();
 void destroy_window();
+#elif __LINUX__
+std::string linux_home_path();
+int mkpath(const std::string& dir, mode_t mode = DEFFILEMODE);
 #endif
 
 App* App::I = nullptr; // singleton
@@ -131,9 +134,10 @@ bool App::request_close()
 #ifdef _WIN32
             destroy_window();
             //PostQuitMessage(0);
-#endif
-#ifdef __OSX__
+#elif __OSX__
             [osx_view close];
+#elif __LINUX__
+            glfwSetWindowShouldClose(glfw_window, GLFW_TRUE);
 #endif
             Canvas::I->m_unsaved = false;
         };
@@ -223,6 +227,15 @@ void App::initLog()
 
     if (!PathFileExistsA((data_path + "\\settings").c_str()))
         CreateDirectoryA((data_path + "\\settings").c_str(), NULL);
+
+#elif __LINUX__
+    data_path = linux_home_path() + "/PanoPainter";
+    mkpath(data_path + "/brushes");
+    mkpath(data_path + "/brushes/thumbs");
+    mkpath(data_path + "/patterns");
+    mkpath(data_path + "/patterns/thumbs");
+    mkpath(data_path + "/settings");
+    mkpath(data_path + "/frames");
 #endif
 
     // TODO: save this path somewhere in the settings, don't overwrite every start
@@ -452,6 +465,8 @@ void App::async_start()
 #elif _WIN32
     async_lock();
     glBindFramebuffer(GL_FRAMEBUFFER, 0);
+#elif __LINUX__
+    glfwMakeContextCurrent(glfw_window);
 #endif
 }
 
@@ -484,6 +499,8 @@ void App::async_swap()
     android_async_swap();
 #elif _WIN32
     win32_async_swap();
+#elif __LINUX__
+    glfwSwapBuffers(glfw_window);
 #endif
 }
 
@@ -582,7 +599,7 @@ void App::draw(float dt)
             LOG("rec tick");
             rec_timer = 0.f;
 
-            auto data = new uint8_t[width * height * 4];
+            auto data = new uint8_t[(int)width * (int)height * 4];
 #if __IOS__
             [ios_view->glview bindDrawable];
 #else
@@ -913,6 +930,9 @@ void App::ui_thread_main()
 #ifdef _WIN32
             extern void win32_update_fps(int frames);
             win32_update_fps(rendered_frames);
+#elif __LINUX__
+            extern void linux_update_fps(int frames);
+            linux_update_fps(rendered_frames);
 #endif
             t_fps_counter = 0;
             rendered_frames = 0;