libretro/oberon-risc-emu
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Double window size on high-dpi displays

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This commit is contained in:
Peter De Wachter 2017-10-15 00:18:48 +02:00
parent 6ce0b8c6f7
commit 7217b49551
1 changed files with 35 additions and 13 deletions
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48
src/sdl-main.c
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@ -62,11 +62,12 @@ struct KeyMapping key_map[] = {
};
static struct option long_options[] = {
{ "zoom", required_argument, NULL, 'z' },
{ "fullscreen", no_argument, NULL, 'f' },
{ "leds", no_argument, NULL, 'L' },
{ "size", required_argument, NULL, 's' },
{ "serial-fd", required_argument, NULL, 'F' },
{ NULL }
{ NULL, no_argument, NULL, 0 }
};
static void fail(int code, const char *fmt, ...) {
@ -79,7 +80,7 @@ static void fail(int code, const char *fmt, ...) {
}
static void usage() {
fail(1, "Usage: risc [--fullscreen] [--size <width>x<height>] [--leds] disk-file-name");
fail(1, "Usage: risc [--zoom N] [--fullscreen] [--size WIDTHxHEIGHT] [--leds] DISK-IMAGE");
}
int main (int argc, char *argv[]) {
@ -92,14 +93,22 @@ int main (int argc, char *argv[]) {
};
bool fullscreen = false;
double zoom = 0;
SDL_Rect risc_rect = {
.w = RISC_FRAMEBUFFER_WIDTH,
.h = RISC_FRAMEBUFFER_HEIGHT
};
int opt;
while ((opt = getopt_long(argc, argv, "fLS:F:", long_options, NULL)) != -1) {
while ((opt = getopt_long(argc, argv, "z:fLS:F:", long_options, NULL)) != -1) {
switch (opt) {
case 'z': {
double x = strtod(optarg, 0);
if (x > 0) {
zoom = x;
}
break;
}
case 'f': {
fullscreen = true;
break;
@ -141,14 +150,25 @@ int main (int argc, char *argv[]) {
SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "best");
int window_flags = SDL_WINDOW_HIDDEN;
int window_pos = SDL_WINDOWPOS_UNDEFINED;
int display = 0;
if (fullscreen) {
window_flags |= SDL_WINDOW_FULLSCREEN_DESKTOP;
window_pos = best_display(&risc_rect);
display = best_display(&risc_rect);
}
if (zoom == 0) {
SDL_Rect bounds;
if (SDL_GetDisplayBounds(display, &bounds) == 0 &&
bounds.h >= risc_rect.h * 2 && bounds.w >= risc_rect.w * 2) {
zoom = 2;
} else {
zoom = 1;
}
}
SDL_Window *window = SDL_CreateWindow("Project Oberon",
window_pos, window_pos,
risc_rect.w, risc_rect.h,
SDL_WINDOWPOS_UNDEFINED_DISPLAY(display),
SDL_WINDOWPOS_UNDEFINED_DISPLAY(display),
(int)(risc_rect.w * zoom),
(int)(risc_rect.h * zoom),
window_flags);
if (window == NULL) {
fail(1, "Could not create window: %s", SDL_GetError());
@ -186,6 +206,7 @@ int main (int argc, char *argv[]) {
switch (event.type) {
case SDL_QUIT: {
done = true;
break;
}
case SDL_WINDOWEVENT: {
@ -279,18 +300,19 @@ int main (int argc, char *argv[]) {
static int best_display(const SDL_Rect *rect) {
int result = SDL_WINDOWPOS_UNDEFINED;
int best = 0;
int display_cnt = SDL_GetNumVideoDisplays();
for (int i = 0; i < display_cnt; i++) {
SDL_Rect bounds;
SDL_GetDisplayBounds(i, &bounds);
if (bounds.h == rect->h && bounds.w >= rect->w) {
result = SDL_WINDOWPOS_UNDEFINED_DISPLAY(i);
if (bounds.w == rect->w)
if (SDL_GetDisplayBounds(i, &bounds) == 0 &&
bounds.h == rect->h && bounds.w >= rect->w) {
best = i;
if (bounds.w == rect->w) {
break; // exact match
}
}
}
return result;
return best;
}
static int clamp(int x, int min, int max) {