mirror of
https://github.com/Genymobile/scrcpy
synced 2024-11-05 06:00:21 +00:00
7848a387c8
The relative mouse mode is tracked by SDL, and accessible via SDL_GetRelativeMouseMode(). This is more robust in case SDL changes the relative mouse mode on its own.
953 lines
30 KiB
C
953 lines
30 KiB
C
#include "screen.h"
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#include <assert.h>
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#include <string.h>
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#include <SDL2/SDL.h>
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#include "events.h"
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#include "icon.h"
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#include "options.h"
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#include "video_buffer.h"
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#include "util/log.h"
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#define DISPLAY_MARGINS 96
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#define DOWNCAST(SINK) container_of(SINK, struct sc_screen, frame_sink)
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static inline struct sc_size
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get_rotated_size(struct sc_size size, int rotation) {
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struct sc_size rotated_size;
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if (rotation & 1) {
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rotated_size.width = size.height;
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rotated_size.height = size.width;
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} else {
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rotated_size.width = size.width;
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rotated_size.height = size.height;
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}
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return rotated_size;
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}
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// get the window size in a struct sc_size
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static struct sc_size
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get_window_size(const struct sc_screen *screen) {
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int width;
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int height;
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SDL_GetWindowSize(screen->window, &width, &height);
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struct sc_size size;
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size.width = width;
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size.height = height;
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return size;
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}
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static struct sc_point
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get_window_position(const struct sc_screen *screen) {
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int x;
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int y;
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SDL_GetWindowPosition(screen->window, &x, &y);
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struct sc_point point;
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point.x = x;
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point.y = y;
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return point;
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}
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// set the window size to be applied when fullscreen is disabled
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static void
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set_window_size(struct sc_screen *screen, struct sc_size new_size) {
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assert(!screen->fullscreen);
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assert(!screen->maximized);
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SDL_SetWindowSize(screen->window, new_size.width, new_size.height);
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}
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// get the preferred display bounds (i.e. the screen bounds with some margins)
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static bool
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get_preferred_display_bounds(struct sc_size *bounds) {
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SDL_Rect rect;
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if (SDL_GetDisplayUsableBounds(0, &rect)) {
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LOGW("Could not get display usable bounds: %s", SDL_GetError());
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return false;
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}
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bounds->width = MAX(0, rect.w - DISPLAY_MARGINS);
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bounds->height = MAX(0, rect.h - DISPLAY_MARGINS);
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return true;
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}
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static bool
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is_optimal_size(struct sc_size current_size, struct sc_size content_size) {
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// The size is optimal if we can recompute one dimension of the current
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// size from the other
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return current_size.height == current_size.width * content_size.height
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/ content_size.width
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|| current_size.width == current_size.height * content_size.width
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/ content_size.height;
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}
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// return the optimal size of the window, with the following constraints:
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// - it attempts to keep at least one dimension of the current_size (i.e. it
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// crops the black borders)
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// - it keeps the aspect ratio
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// - it scales down to make it fit in the display_size
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static struct sc_size
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get_optimal_size(struct sc_size current_size, struct sc_size content_size,
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bool within_display_bounds) {
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if (content_size.width == 0 || content_size.height == 0) {
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// avoid division by 0
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return current_size;
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}
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struct sc_size window_size;
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struct sc_size display_size;
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if (!within_display_bounds ||
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!get_preferred_display_bounds(&display_size)) {
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// do not constraint the size
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window_size = current_size;
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} else {
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window_size.width = MIN(current_size.width, display_size.width);
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window_size.height = MIN(current_size.height, display_size.height);
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}
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if (is_optimal_size(window_size, content_size)) {
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return window_size;
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}
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bool keep_width = content_size.width * window_size.height
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> content_size.height * window_size.width;
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if (keep_width) {
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// remove black borders on top and bottom
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window_size.height = content_size.height * window_size.width
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/ content_size.width;
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} else {
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// remove black borders on left and right (or none at all if it already
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// fits)
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window_size.width = content_size.width * window_size.height
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/ content_size.height;
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}
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return window_size;
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}
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// initially, there is no current size, so use the frame size as current size
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// req_width and req_height, if not 0, are the sizes requested by the user
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static inline struct sc_size
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get_initial_optimal_size(struct sc_size content_size, uint16_t req_width,
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uint16_t req_height) {
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struct sc_size window_size;
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if (!req_width && !req_height) {
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window_size = get_optimal_size(content_size, content_size, true);
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} else {
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if (req_width) {
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window_size.width = req_width;
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} else {
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// compute from the requested height
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window_size.width = (uint32_t) req_height * content_size.width
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/ content_size.height;
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}
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if (req_height) {
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window_size.height = req_height;
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} else {
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// compute from the requested width
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window_size.height = (uint32_t) req_width * content_size.height
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/ content_size.width;
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}
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}
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return window_size;
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}
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static inline bool
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sc_screen_is_relative_mode(struct sc_screen *screen) {
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// screen->im.mp may be NULL if --no-control
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return screen->im.mp && screen->im.mp->relative_mode;
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}
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static void
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sc_screen_set_mouse_capture(bool capture) {
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if (SDL_SetRelativeMouseMode(capture)) {
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LOGE("Could not set relative mouse mode to %s: %s",
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capture ? "true" : "false", SDL_GetError());
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}
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}
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static inline bool
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sc_screen_get_mouse_capture(void) {
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return SDL_GetRelativeMouseMode();
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}
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static inline void
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sc_screen_toggle_mouse_capture(void) {
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sc_screen_set_mouse_capture(!sc_screen_get_mouse_capture());
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}
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static void
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sc_screen_update_content_rect(struct sc_screen *screen) {
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int dw;
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int dh;
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SDL_GL_GetDrawableSize(screen->window, &dw, &dh);
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struct sc_size content_size = screen->content_size;
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// The drawable size is the window size * the HiDPI scale
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struct sc_size drawable_size = {dw, dh};
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SDL_Rect *rect = &screen->rect;
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if (is_optimal_size(drawable_size, content_size)) {
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rect->x = 0;
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rect->y = 0;
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rect->w = drawable_size.width;
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rect->h = drawable_size.height;
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return;
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}
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bool keep_width = content_size.width * drawable_size.height
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> content_size.height * drawable_size.width;
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if (keep_width) {
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rect->x = 0;
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rect->w = drawable_size.width;
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rect->h = drawable_size.width * content_size.height
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/ content_size.width;
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rect->y = (drawable_size.height - rect->h) / 2;
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} else {
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rect->y = 0;
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rect->h = drawable_size.height;
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rect->w = drawable_size.height * content_size.width
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/ content_size.height;
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rect->x = (drawable_size.width - rect->w) / 2;
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}
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}
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static inline SDL_Texture *
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create_texture(struct sc_screen *screen) {
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SDL_Renderer *renderer = screen->renderer;
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struct sc_size size = screen->frame_size;
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SDL_Texture *texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_YV12,
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SDL_TEXTUREACCESS_STREAMING,
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size.width, size.height);
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if (!texture) {
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return NULL;
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}
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if (screen->mipmaps) {
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struct sc_opengl *gl = &screen->gl;
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SDL_GL_BindTexture(texture, NULL, NULL);
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// Enable trilinear filtering for downscaling
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gl->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
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GL_LINEAR_MIPMAP_LINEAR);
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gl->TexParameterf(GL_TEXTURE_2D, GL_TEXTURE_LOD_BIAS, -1.f);
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SDL_GL_UnbindTexture(texture);
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}
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return texture;
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}
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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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static void
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sc_screen_render(struct sc_screen *screen, bool update_content_rect) {
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if (update_content_rect) {
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sc_screen_update_content_rect(screen);
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}
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SDL_RenderClear(screen->renderer);
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if (screen->rotation == 0) {
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SDL_RenderCopy(screen->renderer, screen->texture, NULL, &screen->rect);
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} else {
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// rotation in RenderCopyEx() is clockwise, while screen->rotation is
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// counterclockwise (to be consistent with --lock-video-orientation)
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int cw_rotation = (4 - screen->rotation) % 4;
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double angle = 90 * cw_rotation;
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SDL_Rect *dstrect = NULL;
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SDL_Rect rect;
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if (screen->rotation & 1) {
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rect.x = screen->rect.x + (screen->rect.w - screen->rect.h) / 2;
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rect.y = screen->rect.y + (screen->rect.h - screen->rect.w) / 2;
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rect.w = screen->rect.h;
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rect.h = screen->rect.w;
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dstrect = ▭
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} else {
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assert(screen->rotation == 2);
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dstrect = &screen->rect;
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}
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SDL_RenderCopyEx(screen->renderer, screen->texture, NULL, dstrect,
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angle, NULL, 0);
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}
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SDL_RenderPresent(screen->renderer);
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}
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#if defined(__APPLE__) || defined(__WINDOWS__)
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# define CONTINUOUS_RESIZING_WORKAROUND
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#endif
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#ifdef CONTINUOUS_RESIZING_WORKAROUND
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// On Windows and MacOS, resizing blocks the event loop, so resizing events are
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// not triggered. As a workaround, handle them in an event handler.
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//
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// <https://bugzilla.libsdl.org/show_bug.cgi?id=2077>
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// <https://stackoverflow.com/a/40693139/1987178>
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static int
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event_watcher(void *data, SDL_Event *event) {
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struct sc_screen *screen = data;
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if (event->type == SDL_WINDOWEVENT
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&& event->window.event == SDL_WINDOWEVENT_RESIZED) {
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// In practice, it seems to always be called from the same thread in
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// that specific case. Anyway, it's just a workaround.
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sc_screen_render(screen, true);
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}
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return 0;
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}
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#endif
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static bool
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sc_screen_frame_sink_open(struct sc_frame_sink *sink) {
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struct sc_screen *screen = DOWNCAST(sink);
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(void) screen;
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#ifndef NDEBUG
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screen->open = true;
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#endif
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// nothing to do, the screen is already open on the main thread
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return true;
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}
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static void
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sc_screen_frame_sink_close(struct sc_frame_sink *sink) {
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struct sc_screen *screen = DOWNCAST(sink);
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(void) screen;
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#ifndef NDEBUG
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screen->open = false;
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#endif
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// nothing to do, the screen lifecycle is not managed by the frame producer
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}
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static bool
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sc_screen_frame_sink_push(struct sc_frame_sink *sink, const AVFrame *frame) {
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struct sc_screen *screen = DOWNCAST(sink);
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return sc_video_buffer_push(&screen->vb, frame);
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}
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static void
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sc_video_buffer_on_new_frame(struct sc_video_buffer *vb, bool previous_skipped,
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void *userdata) {
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(void) vb;
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struct sc_screen *screen = userdata;
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// event_failed implies previous_skipped (the previous frame may not have
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// been consumed if the event was not sent)
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assert(!screen->event_failed || previous_skipped);
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bool need_new_event;
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if (previous_skipped) {
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fps_counter_add_skipped_frame(&screen->fps_counter);
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// The EVENT_NEW_FRAME triggered for the previous frame will consume
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// this new frame instead, unless the previous event failed
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need_new_event = screen->event_failed;
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} else {
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need_new_event = true;
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}
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if (need_new_event) {
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static SDL_Event new_frame_event = {
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.type = EVENT_NEW_FRAME,
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};
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// Post the event on the UI thread
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int ret = SDL_PushEvent(&new_frame_event);
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if (ret < 0) {
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LOGW("Could not post new frame event: %s", SDL_GetError());
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screen->event_failed = true;
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} else {
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screen->event_failed = false;
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}
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}
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}
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bool
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sc_screen_init(struct sc_screen *screen,
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const struct sc_screen_params *params) {
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screen->resize_pending = false;
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screen->has_frame = false;
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screen->fullscreen = false;
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screen->maximized = false;
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screen->event_failed = false;
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screen->mouse_capture_key_pressed = 0;
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screen->req.x = params->window_x;
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screen->req.y = params->window_y;
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screen->req.width = params->window_width;
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screen->req.height = params->window_height;
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screen->req.fullscreen = params->fullscreen;
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static const struct sc_video_buffer_callbacks cbs = {
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.on_new_frame = sc_video_buffer_on_new_frame,
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};
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bool ok = sc_video_buffer_init(&screen->vb, params->buffering_time, &cbs,
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screen);
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if (!ok) {
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return false;
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}
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ok = sc_video_buffer_start(&screen->vb);
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if (!ok) {
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goto error_destroy_video_buffer;
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}
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if (!fps_counter_init(&screen->fps_counter)) {
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goto error_stop_and_join_video_buffer;
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}
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screen->frame_size = params->frame_size;
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screen->rotation = params->rotation;
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if (screen->rotation) {
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LOGI("Initial display rotation set to %u", screen->rotation);
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}
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struct sc_size content_size =
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get_rotated_size(screen->frame_size, screen->rotation);
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screen->content_size = content_size;
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uint32_t window_flags = SDL_WINDOW_HIDDEN
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| SDL_WINDOW_RESIZABLE
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| SDL_WINDOW_ALLOW_HIGHDPI;
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if (params->always_on_top) {
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window_flags |= SDL_WINDOW_ALWAYS_ON_TOP;
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}
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if (params->window_borderless) {
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window_flags |= SDL_WINDOW_BORDERLESS;
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}
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// The window will be positioned and sized on first video frame
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screen->window =
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SDL_CreateWindow(params->window_title, 0, 0, 0, 0, window_flags);
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if (!screen->window) {
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LOGE("Could not create window: %s", SDL_GetError());
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goto error_destroy_fps_counter;
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}
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screen->renderer = SDL_CreateRenderer(screen->window, -1,
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SDL_RENDERER_ACCELERATED);
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if (!screen->renderer) {
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LOGE("Could not create renderer: %s", SDL_GetError());
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goto error_destroy_window;
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}
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SDL_RendererInfo renderer_info;
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int r = SDL_GetRendererInfo(screen->renderer, &renderer_info);
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const char *renderer_name = r ? NULL : renderer_info.name;
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LOGI("Renderer: %s", renderer_name ? renderer_name : "(unknown)");
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screen->mipmaps = false;
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// starts with "opengl"
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bool use_opengl = renderer_name && !strncmp(renderer_name, "opengl", 6);
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if (use_opengl) {
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struct sc_opengl *gl = &screen->gl;
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sc_opengl_init(gl);
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LOGI("OpenGL version: %s", gl->version);
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if (params->mipmaps) {
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bool supports_mipmaps =
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sc_opengl_version_at_least(gl, 3, 0, /* OpenGL 3.0+ */
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2, 0 /* OpenGL ES 2.0+ */);
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if (supports_mipmaps) {
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LOGI("Trilinear filtering enabled");
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screen->mipmaps = true;
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} else {
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LOGW("Trilinear filtering disabled "
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"(OpenGL 3.0+ or ES 2.0+ required)");
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}
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} else {
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LOGI("Trilinear filtering disabled");
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}
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} else if (params->mipmaps) {
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LOGD("Trilinear filtering disabled (not an OpenGL renderer)");
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}
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SDL_Surface *icon = scrcpy_icon_load();
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if (icon) {
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SDL_SetWindowIcon(screen->window, icon);
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scrcpy_icon_destroy(icon);
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} else {
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LOGW("Could not load icon");
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}
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LOGI("Initial texture: %" PRIu16 "x%" PRIu16, params->frame_size.width,
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params->frame_size.height);
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screen->texture = create_texture(screen);
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if (!screen->texture) {
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LOGE("Could not create texture: %s", SDL_GetError());
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goto error_destroy_renderer;
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}
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screen->frame = av_frame_alloc();
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if (!screen->frame) {
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LOG_OOM();
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goto error_destroy_texture;
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}
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struct sc_input_manager_params im_params = {
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.controller = params->controller,
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.fp = params->fp,
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.screen = screen,
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.kp = params->kp,
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.mp = params->mp,
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.forward_all_clicks = params->forward_all_clicks,
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.legacy_paste = params->legacy_paste,
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.clipboard_autosync = params->clipboard_autosync,
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.shortcut_mods = params->shortcut_mods,
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};
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sc_input_manager_init(&screen->im, &im_params);
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#ifdef CONTINUOUS_RESIZING_WORKAROUND
|
|
SDL_AddEventWatch(event_watcher, screen);
|
|
#endif
|
|
|
|
static const struct sc_frame_sink_ops ops = {
|
|
.open = sc_screen_frame_sink_open,
|
|
.close = sc_screen_frame_sink_close,
|
|
.push = sc_screen_frame_sink_push,
|
|
};
|
|
|
|
screen->frame_sink.ops = &ops;
|
|
|
|
#ifndef NDEBUG
|
|
screen->open = false;
|
|
#endif
|
|
|
|
return true;
|
|
|
|
error_destroy_texture:
|
|
SDL_DestroyTexture(screen->texture);
|
|
error_destroy_renderer:
|
|
SDL_DestroyRenderer(screen->renderer);
|
|
error_destroy_window:
|
|
SDL_DestroyWindow(screen->window);
|
|
error_destroy_fps_counter:
|
|
fps_counter_destroy(&screen->fps_counter);
|
|
error_stop_and_join_video_buffer:
|
|
sc_video_buffer_stop(&screen->vb);
|
|
sc_video_buffer_join(&screen->vb);
|
|
error_destroy_video_buffer:
|
|
sc_video_buffer_destroy(&screen->vb);
|
|
|
|
return false;
|
|
}
|
|
|
|
static void
|
|
sc_screen_show_initial_window(struct sc_screen *screen) {
|
|
int x = screen->req.x != SC_WINDOW_POSITION_UNDEFINED
|
|
? screen->req.x : (int) SDL_WINDOWPOS_CENTERED;
|
|
int y = screen->req.y != SC_WINDOW_POSITION_UNDEFINED
|
|
? screen->req.y : (int) SDL_WINDOWPOS_CENTERED;
|
|
|
|
struct sc_size window_size =
|
|
get_initial_optimal_size(screen->content_size, screen->req.width,
|
|
screen->req.height);
|
|
|
|
set_window_size(screen, window_size);
|
|
SDL_SetWindowPosition(screen->window, x, y);
|
|
|
|
if (screen->req.fullscreen) {
|
|
sc_screen_switch_fullscreen(screen);
|
|
}
|
|
|
|
SDL_ShowWindow(screen->window);
|
|
}
|
|
|
|
void
|
|
sc_screen_hide_window(struct sc_screen *screen) {
|
|
SDL_HideWindow(screen->window);
|
|
}
|
|
|
|
void
|
|
sc_screen_interrupt(struct sc_screen *screen) {
|
|
sc_video_buffer_stop(&screen->vb);
|
|
fps_counter_interrupt(&screen->fps_counter);
|
|
}
|
|
|
|
void
|
|
sc_screen_join(struct sc_screen *screen) {
|
|
sc_video_buffer_join(&screen->vb);
|
|
fps_counter_join(&screen->fps_counter);
|
|
}
|
|
|
|
void
|
|
sc_screen_destroy(struct sc_screen *screen) {
|
|
#ifndef NDEBUG
|
|
assert(!screen->open);
|
|
#endif
|
|
av_frame_free(&screen->frame);
|
|
SDL_DestroyTexture(screen->texture);
|
|
SDL_DestroyRenderer(screen->renderer);
|
|
SDL_DestroyWindow(screen->window);
|
|
fps_counter_destroy(&screen->fps_counter);
|
|
sc_video_buffer_destroy(&screen->vb);
|
|
}
|
|
|
|
static void
|
|
resize_for_content(struct sc_screen *screen, struct sc_size old_content_size,
|
|
struct sc_size new_content_size) {
|
|
struct sc_size window_size = get_window_size(screen);
|
|
struct sc_size target_size = {
|
|
.width = (uint32_t) window_size.width * new_content_size.width
|
|
/ old_content_size.width,
|
|
.height = (uint32_t) window_size.height * new_content_size.height
|
|
/ old_content_size.height,
|
|
};
|
|
target_size = get_optimal_size(target_size, new_content_size, true);
|
|
set_window_size(screen, target_size);
|
|
}
|
|
|
|
static void
|
|
set_content_size(struct sc_screen *screen, struct sc_size new_content_size) {
|
|
if (!screen->fullscreen && !screen->maximized) {
|
|
resize_for_content(screen, screen->content_size, new_content_size);
|
|
} else if (!screen->resize_pending) {
|
|
// Store the windowed size to be able to compute the optimal size once
|
|
// fullscreen and maximized are disabled
|
|
screen->windowed_content_size = screen->content_size;
|
|
screen->resize_pending = true;
|
|
}
|
|
|
|
screen->content_size = new_content_size;
|
|
}
|
|
|
|
static void
|
|
apply_pending_resize(struct sc_screen *screen) {
|
|
assert(!screen->fullscreen);
|
|
assert(!screen->maximized);
|
|
if (screen->resize_pending) {
|
|
resize_for_content(screen, screen->windowed_content_size,
|
|
screen->content_size);
|
|
screen->resize_pending = false;
|
|
}
|
|
}
|
|
|
|
void
|
|
sc_screen_set_rotation(struct sc_screen *screen, unsigned rotation) {
|
|
assert(rotation < 4);
|
|
if (rotation == screen->rotation) {
|
|
return;
|
|
}
|
|
|
|
struct sc_size new_content_size =
|
|
get_rotated_size(screen->frame_size, rotation);
|
|
|
|
set_content_size(screen, new_content_size);
|
|
|
|
screen->rotation = rotation;
|
|
LOGI("Display rotation set to %u", rotation);
|
|
|
|
sc_screen_render(screen, true);
|
|
}
|
|
|
|
// recreate the texture and resize the window if the frame size has changed
|
|
static bool
|
|
prepare_for_frame(struct sc_screen *screen, struct sc_size new_frame_size) {
|
|
if (screen->frame_size.width != new_frame_size.width
|
|
|| screen->frame_size.height != new_frame_size.height) {
|
|
// frame dimension changed, destroy texture
|
|
SDL_DestroyTexture(screen->texture);
|
|
|
|
screen->frame_size = new_frame_size;
|
|
|
|
struct sc_size new_content_size =
|
|
get_rotated_size(new_frame_size, screen->rotation);
|
|
set_content_size(screen, new_content_size);
|
|
|
|
sc_screen_update_content_rect(screen);
|
|
|
|
LOGI("New texture: %" PRIu16 "x%" PRIu16,
|
|
screen->frame_size.width, screen->frame_size.height);
|
|
screen->texture = create_texture(screen);
|
|
if (!screen->texture) {
|
|
LOGE("Could not create texture: %s", SDL_GetError());
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
// write the frame into the texture
|
|
static void
|
|
update_texture(struct sc_screen *screen, const AVFrame *frame) {
|
|
SDL_UpdateYUVTexture(screen->texture, NULL,
|
|
frame->data[0], frame->linesize[0],
|
|
frame->data[1], frame->linesize[1],
|
|
frame->data[2], frame->linesize[2]);
|
|
|
|
if (screen->mipmaps) {
|
|
SDL_GL_BindTexture(screen->texture, NULL, NULL);
|
|
screen->gl.GenerateMipmap(GL_TEXTURE_2D);
|
|
SDL_GL_UnbindTexture(screen->texture);
|
|
}
|
|
}
|
|
|
|
static bool
|
|
sc_screen_update_frame(struct sc_screen *screen) {
|
|
av_frame_unref(screen->frame);
|
|
sc_video_buffer_consume(&screen->vb, screen->frame);
|
|
AVFrame *frame = screen->frame;
|
|
|
|
fps_counter_add_rendered_frame(&screen->fps_counter);
|
|
|
|
struct sc_size new_frame_size = {frame->width, frame->height};
|
|
if (!prepare_for_frame(screen, new_frame_size)) {
|
|
return false;
|
|
}
|
|
update_texture(screen, frame);
|
|
|
|
if (!screen->has_frame) {
|
|
screen->has_frame = true;
|
|
// this is the very first frame, show the window
|
|
sc_screen_show_initial_window(screen);
|
|
|
|
if (sc_screen_is_relative_mode(screen)) {
|
|
// Capture mouse on start
|
|
sc_screen_set_mouse_capture(true);
|
|
}
|
|
}
|
|
|
|
sc_screen_render(screen, false);
|
|
return true;
|
|
}
|
|
|
|
void
|
|
sc_screen_switch_fullscreen(struct sc_screen *screen) {
|
|
uint32_t new_mode = screen->fullscreen ? 0 : SDL_WINDOW_FULLSCREEN_DESKTOP;
|
|
if (SDL_SetWindowFullscreen(screen->window, new_mode)) {
|
|
LOGW("Could not switch fullscreen mode: %s", SDL_GetError());
|
|
return;
|
|
}
|
|
|
|
screen->fullscreen = !screen->fullscreen;
|
|
if (!screen->fullscreen && !screen->maximized) {
|
|
apply_pending_resize(screen);
|
|
}
|
|
|
|
LOGD("Switched to %s mode", screen->fullscreen ? "fullscreen" : "windowed");
|
|
sc_screen_render(screen, true);
|
|
}
|
|
|
|
void
|
|
sc_screen_resize_to_fit(struct sc_screen *screen) {
|
|
if (screen->fullscreen || screen->maximized) {
|
|
return;
|
|
}
|
|
|
|
struct sc_point point = get_window_position(screen);
|
|
struct sc_size window_size = get_window_size(screen);
|
|
|
|
struct sc_size optimal_size =
|
|
get_optimal_size(window_size, screen->content_size, false);
|
|
|
|
// Center the window related to the device screen
|
|
assert(optimal_size.width <= window_size.width);
|
|
assert(optimal_size.height <= window_size.height);
|
|
uint32_t new_x = point.x + (window_size.width - optimal_size.width) / 2;
|
|
uint32_t new_y = point.y + (window_size.height - optimal_size.height) / 2;
|
|
|
|
SDL_SetWindowSize(screen->window, optimal_size.width, optimal_size.height);
|
|
SDL_SetWindowPosition(screen->window, new_x, new_y);
|
|
LOGD("Resized to optimal size: %ux%u", optimal_size.width,
|
|
optimal_size.height);
|
|
}
|
|
|
|
void
|
|
sc_screen_resize_to_pixel_perfect(struct sc_screen *screen) {
|
|
if (screen->fullscreen) {
|
|
return;
|
|
}
|
|
|
|
if (screen->maximized) {
|
|
SDL_RestoreWindow(screen->window);
|
|
screen->maximized = false;
|
|
}
|
|
|
|
struct sc_size content_size = screen->content_size;
|
|
SDL_SetWindowSize(screen->window, content_size.width, content_size.height);
|
|
LOGD("Resized to pixel-perfect: %ux%u", content_size.width,
|
|
content_size.height);
|
|
}
|
|
|
|
static inline bool
|
|
sc_screen_is_mouse_capture_key(SDL_Keycode key) {
|
|
return key == SDLK_LALT || key == SDLK_LGUI || key == SDLK_RGUI;
|
|
}
|
|
|
|
void
|
|
sc_screen_handle_event(struct sc_screen *screen, SDL_Event *event) {
|
|
bool relative_mode = sc_screen_is_relative_mode(screen);
|
|
|
|
switch (event->type) {
|
|
case EVENT_NEW_FRAME: {
|
|
bool ok = sc_screen_update_frame(screen);
|
|
if (!ok) {
|
|
LOGW("Frame update failed\n");
|
|
}
|
|
return;
|
|
}
|
|
case SDL_WINDOWEVENT:
|
|
if (!screen->has_frame) {
|
|
// Do nothing
|
|
return;
|
|
}
|
|
switch (event->window.event) {
|
|
case SDL_WINDOWEVENT_EXPOSED:
|
|
sc_screen_render(screen, true);
|
|
break;
|
|
case SDL_WINDOWEVENT_SIZE_CHANGED:
|
|
sc_screen_render(screen, true);
|
|
break;
|
|
case SDL_WINDOWEVENT_MAXIMIZED:
|
|
screen->maximized = true;
|
|
break;
|
|
case SDL_WINDOWEVENT_RESTORED:
|
|
if (screen->fullscreen) {
|
|
// On Windows, in maximized+fullscreen, disabling
|
|
// fullscreen mode unexpectedly triggers the "restored"
|
|
// then "maximized" events, leaving the window in a
|
|
// weird state (maximized according to the events, but
|
|
// not maximized visually).
|
|
break;
|
|
}
|
|
screen->maximized = false;
|
|
apply_pending_resize(screen);
|
|
sc_screen_render(screen, true);
|
|
break;
|
|
case SDL_WINDOWEVENT_FOCUS_LOST:
|
|
if (relative_mode) {
|
|
sc_screen_set_mouse_capture(false);
|
|
}
|
|
break;
|
|
}
|
|
return;
|
|
case SDL_KEYDOWN:
|
|
if (relative_mode) {
|
|
SDL_Keycode key = event->key.keysym.sym;
|
|
if (sc_screen_is_mouse_capture_key(key)) {
|
|
if (!screen->mouse_capture_key_pressed) {
|
|
screen->mouse_capture_key_pressed = key;
|
|
} else {
|
|
// Another mouse capture key has been pressed, cancel
|
|
// mouse (un)capture
|
|
screen->mouse_capture_key_pressed = 0;
|
|
}
|
|
// Mouse capture keys are never forwarded to the device
|
|
return;
|
|
}
|
|
}
|
|
break;
|
|
case SDL_KEYUP:
|
|
if (relative_mode) {
|
|
SDL_Keycode key = event->key.keysym.sym;
|
|
SDL_Keycode cap = screen->mouse_capture_key_pressed;
|
|
screen->mouse_capture_key_pressed = 0;
|
|
if (sc_screen_is_mouse_capture_key(key)) {
|
|
if (key == cap) {
|
|
// A mouse capture key has been pressed then released:
|
|
// toggle the capture mouse mode
|
|
sc_screen_toggle_mouse_capture();
|
|
}
|
|
// Mouse capture keys are never forwarded to the device
|
|
return;
|
|
}
|
|
}
|
|
break;
|
|
case SDL_MOUSEWHEEL:
|
|
case SDL_MOUSEMOTION:
|
|
case SDL_MOUSEBUTTONDOWN:
|
|
if (relative_mode && !sc_screen_get_mouse_capture()) {
|
|
// Do not forward to input manager, the mouse will be captured
|
|
// on SDL_MOUSEBUTTONUP
|
|
return;
|
|
}
|
|
break;
|
|
case SDL_FINGERMOTION:
|
|
case SDL_FINGERDOWN:
|
|
case SDL_FINGERUP:
|
|
if (relative_mode) {
|
|
// Touch events are not compatible with relative mode
|
|
// (coordinates are not relative)
|
|
return;
|
|
}
|
|
break;
|
|
case SDL_MOUSEBUTTONUP:
|
|
if (relative_mode && !sc_screen_get_mouse_capture()) {
|
|
sc_screen_set_mouse_capture(true);
|
|
return;
|
|
}
|
|
break;
|
|
}
|
|
|
|
sc_input_manager_handle_event(&screen->im, event);
|
|
}
|
|
|
|
struct sc_point
|
|
sc_screen_convert_drawable_to_frame_coords(struct sc_screen *screen,
|
|
int32_t x, int32_t y) {
|
|
unsigned rotation = screen->rotation;
|
|
assert(rotation < 4);
|
|
|
|
int32_t w = screen->content_size.width;
|
|
int32_t h = screen->content_size.height;
|
|
|
|
|
|
x = (int64_t) (x - screen->rect.x) * w / screen->rect.w;
|
|
y = (int64_t) (y - screen->rect.y) * h / screen->rect.h;
|
|
|
|
// rotate
|
|
struct sc_point result;
|
|
switch (rotation) {
|
|
case 0:
|
|
result.x = x;
|
|
result.y = y;
|
|
break;
|
|
case 1:
|
|
result.x = h - y;
|
|
result.y = x;
|
|
break;
|
|
case 2:
|
|
result.x = w - x;
|
|
result.y = h - y;
|
|
break;
|
|
default:
|
|
assert(rotation == 3);
|
|
result.x = y;
|
|
result.y = w - x;
|
|
break;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
struct sc_point
|
|
sc_screen_convert_window_to_frame_coords(struct sc_screen *screen,
|
|
int32_t x, int32_t y) {
|
|
sc_screen_hidpi_scale_coords(screen, &x, &y);
|
|
return sc_screen_convert_drawable_to_frame_coords(screen, x, y);
|
|
}
|
|
|
|
void
|
|
sc_screen_hidpi_scale_coords(struct sc_screen *screen, int32_t *x, int32_t *y) {
|
|
// take the HiDPI scaling (dw/ww and dh/wh) into account
|
|
int ww, wh, dw, dh;
|
|
SDL_GetWindowSize(screen->window, &ww, &wh);
|
|
SDL_GL_GetDrawableSize(screen->window, &dw, &dh);
|
|
|
|
// scale for HiDPI (64 bits for intermediate multiplications)
|
|
*x = (int64_t) *x * dw / ww;
|
|
*y = (int64_t) *y * dh / wh;
|
|
}
|