new sample: color_fill

This is an attempt to create a minimal-as-possible (within reason?) sample app.

All this sample does is display a green window.

Author: DavidLudwig

P0267_RefImpl/Samples/color_fill/CMakeLists.txt

@@ -0,0 +1,10 @@
+cmake_minimum_required(VERSION 3.0.0)
+set(CMAKE_CXX_STANDARD 17)
+
+# Use the CMakeLists.txt's parent-directory-name for the project's id/name
+get_filename_component(PROJECT_ID ${CMAKE_CURRENT_SOURCE_DIR} NAME)
+string(REPLACE " " "_" PROJECT_ID ${PROJECT_ID})
+project(${PROJECT_ID})
+
+add_executable(${PROJECT_ID} main.cpp)
+target_link_libraries(${PROJECT_ID} io2d)

P0267_RefImpl/Samples/color_fill/main.cpp

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+
+#include <io2d.h>
+
+using namespace std::experimental::io2d;
+
+int main(int argc, const char *argv[]) {
+    auto display = output_surface {512, 512, format::argb32, scaling::none, refresh_style::fixed, 30.f};
+    display.size_change_callback([&](output_surface &surface) {
+        surface.dimensions(surface.display_dimensions());
+    });
+    display.draw_callback([&](auto &surface) {
+        brush mainColor {rgba_color::green};
+        surface.paint(mainColor);
+    });
+    display.begin_show();
+    return 0;
+}