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/*
* Copyright (C) 2023 Collabora, Ltd.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <glib.h>
#include <wayland-client.h>
#include "wayland-test-client-utils.h"
static WaylandDisplay *display;
static struct wl_surface *surface;
static struct xdg_surface *xdg_surface;
static struct xdg_toplevel *xdg_toplevel;
static struct wp_viewport *viewport;
static struct wp_fractional_scale_v1 *fractional_scale_obj;
static gboolean running;
static gboolean waiting_for_configure;
static gboolean waiting_for_scale;
static uint32_t logical_width = 0;
static uint32_t logical_height = 0;
static float fractional_buffer_scale = 1.0;
static int sync_point = 0;
static void
handle_frame_callback (void *data,
struct wl_callback *callback,
uint32_t time)
{
wl_callback_destroy (callback);
test_driver_sync_point (display->test_driver, sync_point++, NULL);
}
static const struct wl_callback_listener frame_listener = {
handle_frame_callback,
};
static void
maybe_redraw (void)
{
struct wl_callback *callback;
uint32_t buffer_width;
uint32_t buffer_height;
if (waiting_for_configure || waiting_for_scale)
return;
g_assert_cmpint (logical_width, >, 0);
g_assert_cmpint (logical_height, >, 0);
g_assert_cmpfloat (fractional_buffer_scale, >, 0.0);
buffer_width = ceilf (logical_width * fractional_buffer_scale);
buffer_height = ceilf (logical_height * fractional_buffer_scale);
draw_surface (display, surface, buffer_width, buffer_height, 0x1f109f20);
wp_viewport_set_destination (viewport, logical_width, logical_height);
callback = wl_surface_frame (surface);
wl_callback_add_listener (callback, &frame_listener, NULL);
wl_surface_commit (surface);
waiting_for_configure = TRUE;
waiting_for_scale = TRUE;
}
static void
handle_xdg_toplevel_configure (void *data,
struct xdg_toplevel *xdg_toplevel,
int32_t width,
int32_t height,
struct wl_array *states)
{
if (width > 0 && height > 0)
{
logical_width = width;
logical_height = height;
waiting_for_configure = TRUE;
}
}
static void
handle_xdg_toplevel_close (void *data,
struct xdg_toplevel *xdg_toplevel)
{
running = FALSE;
}
static const struct xdg_toplevel_listener xdg_toplevel_listener = {
handle_xdg_toplevel_configure,
handle_xdg_toplevel_close,
};
static void
handle_xdg_surface_configure (void *data,
struct xdg_surface *xdg_surface,
uint32_t serial)
{
xdg_surface_ack_configure (xdg_surface, serial);
waiting_for_configure = FALSE;
maybe_redraw ();
}
static const struct xdg_surface_listener xdg_surface_listener = {
handle_xdg_surface_configure,
};
static void handle_preferred_scale (void *data,
struct wp_fractional_scale_v1 *fractional_scale_obj,
uint32_t wire_scale)
{
float new_fractional_buffer_scale;
new_fractional_buffer_scale = wire_scale / 120.0;
if (G_APPROX_VALUE (new_fractional_buffer_scale,
fractional_buffer_scale,
FLT_EPSILON))
return;
fractional_buffer_scale = new_fractional_buffer_scale;
waiting_for_scale = FALSE;
maybe_redraw ();
}
static const struct wp_fractional_scale_v1_listener fractional_scale_listener = {
.preferred_scale = handle_preferred_scale,
};
int
main (int argc,
char **argv)
{
display = wayland_display_new (WAYLAND_DISPLAY_CAPABILITY_TEST_DRIVER);
surface = wl_compositor_create_surface (display->compositor);
xdg_surface = xdg_wm_base_get_xdg_surface (display->xdg_wm_base, surface);
xdg_surface_add_listener (xdg_surface, &xdg_surface_listener, NULL);
xdg_toplevel = xdg_surface_get_toplevel (xdg_surface);
xdg_toplevel_add_listener (xdg_toplevel, &xdg_toplevel_listener, NULL);
xdg_toplevel_set_title (xdg_toplevel, "fractional-scale");
xdg_toplevel_set_fullscreen (xdg_toplevel, NULL);
viewport = wp_viewporter_get_viewport (display->viewporter, surface);
fractional_scale_obj =
wp_fractional_scale_manager_v1_get_fractional_scale (display->fractional_scale_mgr,
surface);
wp_fractional_scale_v1_add_listener (fractional_scale_obj,
&fractional_scale_listener,
NULL);
wl_surface_commit (surface);
waiting_for_configure = TRUE;
waiting_for_scale = FALSE;
running = TRUE;
while (running)
{
if (wl_display_dispatch (display->display) == -1)
return EXIT_FAILURE;
}
wl_display_roundtrip (display->display);
return EXIT_SUCCESS;
}
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