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add shadow fade in / out with animation

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This commit is contained in:
William McKinnon 2023-08-21 17:43:17 -04:00
parent 638373120b
commit f119e9e9ee
1 changed files with 15 additions and 1 deletions
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16
sway/desktop/render.c
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@ -72,6 +72,16 @@ enum corner_location get_rotated_corner(enum corner_location corner_location,
return corner_location;
}
// TODO: don't need pointer
float get_animation_completion_percentage(struct sway_container *con) {
if (con->alpha < con->target_alpha) {
return con->alpha / con->target_alpha;
} else if (con->alpha > con->target_alpha) {
return con->alpha / con->max_alpha;
}
return 1;
}
/**
* Apply scale to a width or height.
*
@ -884,7 +894,11 @@ static void render_view(struct sway_output *output, pixman_region32_t *damage,
scale_box(&box, output_scale);
int scaled_corner_radius = deco_data.corner_radius == 0 ?
0 : (deco_data.corner_radius + state->border_thickness) * output_scale;
render_box_shadow(output, damage, &box, config->shadow_color, config->shadow_blur_sigma,
float shadow_color[4];
memcpy(&shadow_color, config->shadow_color, sizeof(float) * 4);
shadow_color[3] *= get_animation_completion_percentage(con);
render_box_shadow(output, damage, &box, shadow_color, config->shadow_blur_sigma,
scaled_corner_radius);
}