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wayland: HiDPI support

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This commit is contained in:
Sebastian Krzyszkowiak 2019-06-12 00:55:05 +02:00
parent dcd3dc4c03
commit 173c6882cd
8 changed files with 186 additions and 20 deletions
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116
src/video/wayland/SDL_waylandwindow.c
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@ -38,6 +38,10 @@
#include "xdg-decoration-unstable-v1-client-protocol.h"
#include "org-kde-kwin-server-decoration-manager-client-protocol.h"
static float get_window_scale_factor(SDL_Window *window) {
return ((SDL_WindowData*)window->driverdata)->scale_factor;
}
/* On modern desktops, we probably will use the xdg-shell protocol instead
of wl_shell, but wl_shell might be useful on older Wayland installs that
don't have the newer protocol, or embedded things that don't have a full
@ -107,11 +111,14 @@ handle_configure_zxdg_shell_surface(void *data, struct zxdg_surface_v6 *zxdg, ui
struct wl_region *region;
if (!wind->shell_surface.zxdg.initial_configure_seen) {
window->w = 0;
window->h = 0;
SDL_SendWindowEvent(window, SDL_WINDOWEVENT_RESIZED, wind->resize.width, wind->resize.height);
window->w = wind->resize.width;
window->h = wind->resize.height;
WAYLAND_wl_egl_window_resize(wind->egl_window, window->w, window->h, 0, 0);
wl_surface_set_buffer_scale(wind->surface, get_window_scale_factor(window));
WAYLAND_wl_egl_window_resize(wind->egl_window, window->w * get_window_scale_factor(window), window->h * get_window_scale_factor(window), 0, 0);
zxdg_surface_v6_ack_configure(zxdg, serial);
@ -123,6 +130,7 @@ handle_configure_zxdg_shell_surface(void *data, struct zxdg_surface_v6 *zxdg, ui
wind->shell_surface.zxdg.initial_configure_seen = SDL_TRUE;
} else {
wind->resize.pending = SDL_TRUE;
wind->resize.configure = SDL_TRUE;
wind->resize.serial = serial;
}
}
@ -208,11 +216,14 @@ handle_configure_xdg_shell_surface(void *data, struct xdg_surface *xdg, uint32_t
struct wl_region *region;
if (!wind->shell_surface.xdg.initial_configure_seen) {
window->w = 0;
window->h = 0;
SDL_SendWindowEvent(window, SDL_WINDOWEVENT_RESIZED, wind->resize.width, wind->resize.height);
window->w = wind->resize.width;
window->h = wind->resize.height;
WAYLAND_wl_egl_window_resize(wind->egl_window, window->w, window->h, 0, 0);
wl_surface_set_buffer_scale(wind->surface, get_window_scale_factor(window));
WAYLAND_wl_egl_window_resize(wind->egl_window, window->w * get_window_scale_factor(window), window->h * get_window_scale_factor(window), 0, 0);
xdg_surface_ack_configure(xdg, serial);
@ -224,6 +235,7 @@ handle_configure_xdg_shell_surface(void *data, struct xdg_surface *xdg, uint32_t
wind->shell_surface.xdg.initial_configure_seen = SDL_TRUE;
} else {
wind->resize.pending = SDL_TRUE;
wind->resize.configure = SDL_TRUE;
wind->resize.serial = serial;
}
}
@ -330,6 +342,78 @@ static const struct qt_extended_surface_listener extended_surface_listener = {
};
#endif /* SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH */
static void
update_scale_factor(SDL_WindowData *window) {
float old_factor = window->scale_factor, new_factor = 0.0;
if (!(window->sdlwindow->flags & SDL_WINDOW_ALLOW_HIGHDPI)) {
return;
}
if (!window->num_outputs) {
new_factor = old_factor;
}
if (FULLSCREEN_VISIBLE(window->sdlwindow) && window->sdlwindow->fullscreen_mode.driverdata) {
new_factor = ((SDL_WaylandOutputData*)(wl_output_get_user_data(window->sdlwindow->fullscreen_mode.driverdata)))->scale_factor;
}
for (int i = 0; i < window->num_outputs; i++) {
float factor = ((SDL_WaylandOutputData*)(wl_output_get_user_data(window->outputs[i])))->scale_factor;
if (factor > new_factor) {
new_factor = factor;
}
}
if (new_factor != old_factor) {
/* force the resize event to trigger, as the logical size didn't change */
window->resize.width = window->sdlwindow->w;
window->resize.height = window->sdlwindow->h;
window->resize.scale_factor = new_factor;
window->resize.pending = SDL_TRUE;
}
}
static void
handle_surface_enter(void *data, struct wl_surface *surface,
struct wl_output *output) {
SDL_WindowData *window = data;
window->outputs = SDL_realloc(window->outputs, (window->num_outputs + 1) * sizeof *window->outputs);
window->outputs[window->num_outputs++] = output;
update_scale_factor(window);
}
static void
handle_surface_leave(void *data, struct wl_surface *surface,
struct wl_output *output) {
SDL_WindowData *window = data;
if (window->num_outputs > 1) {
struct wl_output **new_outputs = SDL_malloc((window->num_outputs - 1) * sizeof *window->outputs), **iter = new_outputs;
for (int i=0; i < window->num_outputs; i++) {
if (window->outputs[i] != output) {
*iter = window->outputs[i];
iter++;
}
}
SDL_free(window->outputs);
window->outputs = new_outputs;
window->num_outputs--;
} else {
window->num_outputs = 0;
SDL_free(window->outputs);
window->outputs = NULL;
}
update_scale_factor(window);
}
static const struct wl_surface_listener surface_listener = {
handle_surface_enter,
handle_surface_leave
};
SDL_bool
Wayland_GetWindowWMInfo(_THIS, SDL_Window * window, SDL_SysWMinfo * info)
{
@ -475,7 +559,7 @@ void
Wayland_SetWindowFullscreen(_THIS, SDL_Window * window,
SDL_VideoDisplay * _display, SDL_bool fullscreen)
{
struct wl_output *output = (struct wl_output *) _display->driverdata;
struct wl_output *output = ((SDL_WaylandOutputData*) _display->driverdata)->output;
SetFullscreen(_this, window, fullscreen ? output : NULL);
}
@ -553,11 +637,28 @@ int Wayland_CreateWindow(_THIS, SDL_Window *window)
data->waylandData = c;
data->sdlwindow = window;
data->scale_factor = 1.0;
if (window->flags & SDL_WINDOW_ALLOW_HIGHDPI) {
for (int i=0; i < SDL_GetVideoDevice()->num_displays; i++) {
float scale = ((SDL_WaylandOutputData*)SDL_GetVideoDevice()->displays[i].driverdata)->scale_factor;
if (scale > data->scale_factor) {
data->scale_factor = scale;
}
}
}
data->resize.pending = SDL_FALSE;
data->resize.width = window->w;
data->resize.height = window->h;
data->resize.scale_factor = data->scale_factor;
data->outputs = NULL;
data->num_outputs = 0;
data->surface =
wl_compositor_create_surface(c->compositor);
wl_surface_set_user_data(data->surface, data);
wl_surface_add_listener(data->surface, &surface_listener, data);
if (c->shell.xdg) {
data->shell_surface.xdg.surface = xdg_wm_base_get_xdg_surface(c->shell.xdg, data->surface);
@ -587,7 +688,7 @@ int Wayland_CreateWindow(_THIS, SDL_Window *window)
#endif /* SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH */
data->egl_window = WAYLAND_wl_egl_window_create(data->surface,
window->w, window->h);
window->w * data->scale_factor, window->h * data->scale_factor);
/* Create the GLES window surface */
data->egl_surface = SDL_EGL_CreateSurface(_this, (NativeWindowType) data->egl_window);
@ -676,9 +777,10 @@ void Wayland_SetWindowSize(_THIS, SDL_Window * window)
SDL_WindowData *wind = window->driverdata;
struct wl_region *region;
WAYLAND_wl_egl_window_resize(wind->egl_window, window->w, window->h, 0, 0);
wl_surface_set_buffer_scale(wind->surface, get_window_scale_factor(window));
WAYLAND_wl_egl_window_resize(wind->egl_window, window->w * get_window_scale_factor(window), window->h * get_window_scale_factor(window), 0, 0);
region =wl_compositor_create_region(data->compositor);
region = wl_compositor_create_region(data->compositor);
wl_region_add(region, 0, 0, window->w, window->h);
wl_surface_set_opaque_region(wind->surface, region);
wl_region_destroy(region);