修复停止播放时获取音量为空导致程序出错的bug; 封面图按1:1裁剪

ui/image.py

@@ -13,7 +13,7 @@ class ScaleImage(Gtk.Image):
     self.reset(filepath)
 
 
-  def reset(self, filepath):
+  def reset(self, filepath, crop = False):
     if type(filepath) == str:
       self.origin = GdkPixbuf.Pixbuf.new_from_file(filepath)
     else:
@@ -24,11 +24,17 @@ class ScaleImage(Gtk.Image):
 
       self.width = self.origin.get_width()
       self.height = self.origin.get_height()
+      self.set_from_pixbuf(self.pixbuf)
     else:
-      self.pixbuf = self.origin.scale_simple(self.width, self.height, GdkPixbuf.InterpType.BILINEAR)
+      w = self.origin.get_width()
+      h = self.origin.get_height()
+      if crop and w != h:
+        size = min(self.width, self.height)
+        self.clip_resize(size)
+      else:
+        self.pixbuf = self.origin.scale_simple(self.width, self.height, GdkPixbuf.InterpType.BILINEAR)
 
-    self.set_from_pixbuf(self.pixbuf)
-    return self
+      return self
 
 
   def resize(self, width, height):
@@ -38,6 +44,34 @@ class ScaleImage(Gtk.Image):
     self.set_from_pixbuf(self.pixbuf)
     return self
 
+  def clip_resize(self, size):
+    w = self.origin.get_width()
+    h = self.origin.get_height()
+    _size = min(w, h) # 按小边裁剪成正方形
+    size = min(size, _size) # 缩放按最小值来
+    self.width = size
+    self.height = size
+
+    surface = cairo.ImageSurface(cairo.Format.ARGB32, w, h)
+    ctx = cairo.Context(surface)
+    Gdk.cairo_set_source_pixbuf(ctx, self.origin, 0, 0)
+
+    ctx.line_to(0, 0)
+    ctx.line_to(_size, 0)
+    ctx.line_to(_size, _size)
+    ctx.line_to(0, _size)
+
+    ctx.close_path()
+
+    ctx.clip()
+    ctx.paint()
+
+    pixbuf = Gdk.pixbuf_get_from_surface(surface, 0, 0, _size, _size)
+
+    self.pixbuf = pixbuf.scale_simple(size, size, GdkPixbuf.InterpType.BILINEAR)
+    self.set_from_pixbuf(self.pixbuf)
+
+    return self
 
   def set_radius(self, radius = 0):
     w = self.width

window.py

@@ -72,7 +72,7 @@ class SonistWindow(Gtk.Window):
     album = ScaleImage(album_img)
 
     disk.resize(192, 192)
-    album.resize(128, 128).set_radius(64)
+    album.clip_resize(128).set_radius(64)
 
     handler.resize(48, 96)
     self.handler = handler
@@ -279,7 +279,7 @@ class SonistWindow(Gtk.Window):
 
     if first:
       self.update_play_stat(played == 'play')
-      self.update_volume(int(self.stat.get('volume')))
+      self.update_volume(int(self.stat.get('volume') or 100))
 
       if self.stat.get('single') == '1':
         self.ctrl_box.toggle_mode_btn(mode = 'single')
@@ -332,6 +332,6 @@ class SonistWindow(Gtk.Window):
   @idle
   def update_album(self, filepath = './usr/share/sonist/avatar.jpg'):
     self.set_background_image(filepath)
-    self.album.reset(filepath).set_radius(64)
+    self.album.reset(filepath, True).set_radius(64)