135 lines
3.9 KiB
C++
135 lines
3.9 KiB
C++
#include <psemek/sdl2/window.hpp>
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#include <psemek/sdl2/init.hpp>
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#include <psemek/gfx/gl.hpp>
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#include <psemek/geom/box.hpp>
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#include <psemek/log/log.hpp>
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namespace psemek::sdl2
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{
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window::window(psemek::app::application::options const & options)
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: sdl_init_(init(SDL_INIT_EVENTS | SDL_INIT_VIDEO))
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{
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SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
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SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, gl::sys::major_version());
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SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, gl::sys::minor_version());
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SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
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SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
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SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
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SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE, 8);
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SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
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SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 8);
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if (options.multisampling == 0)
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{
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SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, 0);
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}
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else
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{
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SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, 1);
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SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, options.multisampling);
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}
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std::uint32_t flags = SDL_WINDOW_OPENGL | SDL_WINDOW_HIDDEN | SDL_WINDOW_RESIZABLE;
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if (options.highdpi) flags |= SDL_WINDOW_ALLOW_HIGHDPI;
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SDL_DisplayMode display_mode;
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SDL_GetCurrentDisplayMode(0, &display_mode);
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window_ = SDL_CreateWindow(options.name.data(), SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, display_mode.w, display_mode.h, flags);
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if (!window_)
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sdl2::fail("Failed to create window: ");
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gl_context_ = SDL_GL_CreateContext(window_);
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if (!gl_context_)
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sdl2::fail("Failed to create OpenGL context: ");
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SDL_GL_MakeCurrent(window_, gl_context_);
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}
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geom::vector<int, 2> window::size() const
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{
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geom::vector<int, 2> result;
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SDL_GL_GetDrawableSize(window_, &result[0], &result[1]);
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return result;
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}
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void window::show()
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{
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SDL_ShowWindow(window_);
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}
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void window::swap()
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{
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SDL_GL_SwapWindow(window_);
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}
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void window::show_cursor(bool show)
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{
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log::info() << (show ? "Cursor shown" : "Cursor hidden");
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SDL_ShowCursor(show ? SDL_TRUE : SDL_FALSE);
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SDL_SetRelativeMouseMode(show ? SDL_FALSE : SDL_TRUE);
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}
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void window::vsync(bool on)
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{
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log::info() << "Turning VSync " << (on ? "on" : "off");
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if (on)
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{
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// try adaptive vsync
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if (SDL_GL_SetSwapInterval(-1) != 0)
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{
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// failed, try usual vsync then
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SDL_GL_SetSwapInterval(1);
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}
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}
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else
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{
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SDL_GL_SetSwapInterval(0);
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}
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}
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void window::windowed(bool on)
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{
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log::info() << "Entering " << (on ? "windowed" : "fullscreen") << " mode";
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SDL_SetWindowFullscreen(window_, on ? 0 : SDL_WINDOW_FULLSCREEN_DESKTOP);
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SDL_SetWindowBordered(window_, on ? SDL_TRUE : SDL_FALSE);
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SDL_RestoreWindow(window_);
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if (on)
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{
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SDL_Rect display_usable_bounds;
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SDL_GetDisplayUsableBounds(0, &display_usable_bounds);
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int top_border, left_border, bottom_border, right_border;
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SDL_GetWindowBordersSize(window_, &top_border, &left_border, &bottom_border, &right_border);
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geom::box<int, 2> bounds_rect;
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bounds_rect[0] = {display_usable_bounds.x, display_usable_bounds.x + display_usable_bounds.w};
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bounds_rect[1] = {display_usable_bounds.y, display_usable_bounds.y + display_usable_bounds.h};
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log::info() << "Display usable bounds: " << bounds_rect;
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log::info() << "Window borders: left " << left_border << ", right " << right_border << ", top " << top_border << ", bottom " << bottom_border;
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geom::box<int, 2> window_rect = bounds_rect;
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window_rect[0].min += left_border;
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window_rect[0].max -= right_border;
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window_rect[1].min += top_border;
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window_rect[1].max -= bottom_border;
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log::info() << "Computed window rect: " << window_rect;
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SDL_SetWindowSize(window_, window_rect.dimensions()[0], window_rect.dimensions()[1]);
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SDL_SetWindowPosition(window_, window_rect[0].min, window_rect[1].min);
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}
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}
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window::~window()
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{
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if (gl_context_)
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SDL_GL_DeleteContext(gl_context_);
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if (window_)
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SDL_DestroyWindow(window_);
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}
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}
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