From 123783c80ae2f2e5a46b0b09f01fcf691630f74d Mon Sep 17 00:00:00 2001
From: lisyarus <lisyarus@gmail.com>
Date: Wed, 2 Mar 2022 13:55:42 +0300
Subject: [PATCH] Support creating an app with fixed resolution & add a list of
 common resolutions

---
 libs/app/include/psemek/app/app.hpp | 15 +++++++++++++++
 libs/app/source/app.cpp             | 10 +++++++---
 2 files changed, 22 insertions(+), 3 deletions(-)

diff --git a/libs/app/include/psemek/app/app.hpp b/libs/app/include/psemek/app/app.hpp
index fd520e76..082e350c 100644
--- a/libs/app/include/psemek/app/app.hpp
+++ b/libs/app/include/psemek/app/app.hpp
@@ -3,6 +3,8 @@
 #include <psemek/app/scene.hpp>
 #include <psemek/app/scene_manager.hpp>
 
+#include <psemek/geom/vector.hpp>
+
 #include <psemek/util/pimpl.hpp>
 
 #include <SDL2/SDL_keycode.h>
@@ -12,12 +14,25 @@
 namespace psemek::app
 {
 
+	static const geom::vector<int, 2> common_resolutions[] =
+	{
+		{1024, 768},
+		{1280, 720},
+		{1280, 1024},
+		{1366, 768},
+		{1440, 900},
+		{1536, 864},
+		{1600, 900},
+		{1920, 1080},
+	};
+
 	struct app
 		: scene_base, scene_manager
 	{
 		struct options
 		{
 			int multisampling = 0;
+			std::optional<geom::vector<int, 2>> fixed_resolution = std::nullopt;
 			bool highdpi = false;
 		};
 
diff --git a/libs/app/source/app.cpp b/libs/app/source/app.cpp
index 2c5f6201..1326e3b6 100644
--- a/libs/app/source/app.cpp
+++ b/libs/app/source/app.cpp
@@ -80,10 +80,15 @@ namespace psemek::app
 			SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, opts.multisampling);
 		}
 
-		std::uint32_t flags = SDL_WINDOW_RESIZABLE | SDL_WINDOW_OPENGL | SDL_WINDOW_MAXIMIZED | SDL_WINDOW_HIDDEN;
+		std::uint32_t flags = SDL_WINDOW_OPENGL | SDL_WINDOW_HIDDEN;
+		if (!opts.fixed_resolution)
+			flags |= SDL_WINDOW_RESIZABLE | SDL_WINDOW_MAXIMIZED;
 		if (opts.highdpi) flags |= SDL_WINDOW_ALLOW_HIGHDPI;
 
-		impl().window = SDL_CreateWindow(name.data(), SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 1024, 768, flags);
+		int width = opts.fixed_resolution ? (*opts.fixed_resolution)[0] : 1024;
+		int height = opts.fixed_resolution ? (*opts.fixed_resolution)[1] : 768;
+
+		impl().window = SDL_CreateWindow(name.data(), SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, width, height, flags);
 		if (!impl().window)
 			sdl2::fail("Failed to create window: ");
 
@@ -104,7 +109,6 @@ namespace psemek::app
 		gl::GetIntegerv(gl::MINOR_VERSION, &minor);
 		log::info() << "Initialized OpenGL " << major << '.' << minor << ", " << vendor << ", " << renderer;
 
-		int width, height;
 		SDL_GL_GetDrawableSize(impl().window, &width, &height);
 		scene_base::on_resize(width, height);