window: Add window_get_output_scale()

This lets you find the maximal scale for all the outputs a window
is on, which is useful for picking a buffer_scale.

diff --git a/clients/window.c b/clients/window.c
index 6f1b406..135ae5a 100644 (file)
--- a/clients/window.c
+++ b/clients/window.c
@@ -1468,6 +1468,22 @@ window_get_buffer_scale(struct window *window)
        return window->main_surface->buffer_scale;
 }
 
+uint32_t
+window_get_output_scale(struct window *window)
+{
+       struct window_output *window_output;
+       struct window_output *window_output_tmp;
+       int scale = 1;
+
+       wl_list_for_each_safe(window_output, window_output_tmp,
+                             &window->window_output_list, link) {
+               if (window_output->output->scale > scale)
+                       scale = window_output->output->scale;
+       }
+
+       return scale;
+}
+
 static void frame_destroy(struct frame *frame);
 
 static void
@@ -4384,6 +4400,8 @@ window_show_menu(struct display *display,
 
        menu->window = window;
        menu->widget = window_add_widget(menu->window, menu);
+       window_set_buffer_scale (menu->window, window_get_buffer_scale (parent));
+       window_set_buffer_transform (menu->window, window_get_buffer_transform (parent));
        menu->entries = entries;
        menu->count = count;
        menu->release_count = 0;

diff --git a/clients/window.h b/clients/window.h
index fec601f..f7b3f28 100644 (file)
--- a/clients/window.h
+++ b/clients/window.h
@@ -260,6 +260,9 @@ void
 window_set_buffer_scale(struct window *window,
                         uint32_t scale);
 
+uint32_t
+window_get_output_scale(struct window *window);
+
 void
 window_destroy(struct window *window);