138 lines
3.6 KiB
C
138 lines
3.6 KiB
C
#ifndef SCREEN_H
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#define SCREEN_H
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#include "common.h"
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#include <stdbool.h>
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#include <SDL2/SDL.h>
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#include <libavformat/avformat.h>
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#include "coords.h"
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#include "fps_counter.h"
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#include "opengl.h"
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#include "trait/frame_sink.h"
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#include "video_buffer.h"
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struct screen {
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struct sc_frame_sink frame_sink; // frame sink trait
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#ifndef NDEBUG
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bool open; // track the open/close state to assert correct behavior
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#endif
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struct video_buffer vb;
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struct fps_counter fps_counter;
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SDL_Window *window;
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SDL_Renderer *renderer;
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SDL_Texture *texture;
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struct sc_opengl gl;
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struct size frame_size;
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struct size content_size; // rotated frame_size
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bool resize_pending; // resize requested while fullscreen or maximized
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// The content size the last time the window was not maximized or
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// fullscreen (meaningful only when resize_pending is true)
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struct size windowed_content_size;
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// client rotation: 0, 1, 2 or 3 (x90 degrees counterclockwise)
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unsigned rotation;
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// rectangle of the content (excluding black borders)
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struct SDL_Rect rect;
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bool has_frame;
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bool fullscreen;
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bool maximized;
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bool mipmaps;
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AVFrame *frame;
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};
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struct screen_params {
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const char *window_title;
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struct size frame_size;
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bool always_on_top;
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int16_t window_x;
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int16_t window_y;
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uint16_t window_width; // accepts SC_WINDOW_POSITION_UNDEFINED
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uint16_t window_height; // accepts SC_WINDOW_POSITION_UNDEFINED
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bool window_borderless;
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uint8_t rotation;
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bool mipmaps;
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bool fullscreen;
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};
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// initialize screen, create window, renderer and texture (window is hidden)
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bool
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screen_init(struct screen *screen, const struct screen_params *params);
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// request to interrupt any inner thread
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// must be called before screen_join()
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void
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screen_interrupt(struct screen *screen);
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// join any inner thread
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void
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screen_join(struct screen *screen);
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// destroy window, renderer and texture (if any)
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void
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screen_destroy(struct screen *screen);
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// hide the window
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//
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// It is used to hide the window immediately on closing without waiting for
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// screen_destroy()
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void
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screen_hide_window(struct screen *screen);
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// render the texture to the renderer
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//
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// Set the update_content_rect flag if the window or content size may have
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// changed, so that the content rectangle is recomputed
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void
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screen_render(struct screen *screen, bool update_content_rect);
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// switch the fullscreen mode
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void
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screen_switch_fullscreen(struct screen *screen);
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// resize window to optimal size (remove black borders)
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void
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screen_resize_to_fit(struct screen *screen);
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// resize window to 1:1 (pixel-perfect)
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void
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screen_resize_to_pixel_perfect(struct screen *screen);
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// set the display rotation (0, 1, 2 or 3, x90 degrees counterclockwise)
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void
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screen_set_rotation(struct screen *screen, unsigned rotation);
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// react to SDL events
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bool
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screen_handle_event(struct screen *screen, SDL_Event *event);
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// convert point from window coordinates to frame coordinates
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// x and y are expressed in pixels
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struct point
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screen_convert_window_to_frame_coords(struct screen *screen,
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int32_t x, int32_t y);
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// convert point from drawable coordinates to frame coordinates
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// x and y are expressed in pixels
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struct point
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screen_convert_drawable_to_frame_coords(struct screen *screen,
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int32_t x, int32_t y);
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// Convert coordinates from window to drawable.
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// Events are expressed in window coordinates, but content is expressed in
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// drawable coordinates. They are the same if HiDPI scaling is 1, but differ
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// otherwise.
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void
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screen_hidpi_scale_coords(struct screen *screen, int32_t *x, int32_t *y);
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#endif
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