通知 -osd - 更改音量/亮度通知栏

Question

我正在运行 Ubuntu 14.10，我发现可以更改用于通知的默认图标（基本上通过添加notification-audio-volume-high.svg等到当前主题（见截图））

虽然这很棒，但我想知道是否可以改变栏的外观（显示通知气泡中亮度/音量的值），以使其更像左边的图标。

是否有某个地方存储了此栏的图标？是否有某个地方的 XML 文件描述了其外观？

谢谢

Answer 1

通过查看其软件包内容，它似乎是在守护进程中硬编码的。它被称为测量。您需要重建它。

1. 获取源码：

   apt-get source notify-osd
   sudo apt-get build-dep notify-osd
   cd notify-osd-0.9.35+14.04.20140213/
   

2. 修改您需要的东西
   src/default.c、尺寸和尺寸限制

   #define DEFAULT_GAUGE_SIZE           0.625f
   #define DEFAULT_GAUGE_OUTLINE_WIDTH  0.125f
   [...]
           property_gauge_size = g_param_spec_double (
                                   "gauge-size",
                                   "gauge-size",
                                   "Size/height (in em) of gauge/indicator",
                                   0.5f,
                                   1.0f,
   [...]
           property_gauge_outline_width = g_param_spec_double (
                                   "gauge-outline-width",
                                   "gauge-outline-width",
                                   "Width/thickness (in em) of gauge-outline",
                                   0.1f,
                                   0.2f,
   

   src/bubble.c，绘制它的函数。

   // color-, alpha-, radius-, width-, height- and gradient-values were determined
   // by very close obvervation of a SVG-mockup from the design-team
   static void
   _draw_value_indicator (cairo_t* cr,
                          gint     value,             // value to render: 0 - 100
                          gint     start_x,           // top of surrounding rect
                          gint     start_y,           // left of surrounding rect
                          gint     width,             // width of surrounding rect
                          gint     height,            // height of surrounding rect
                          gint     outline_thickness) // outline-thickness
   {
   [...]
   

3. 重建 deb 包

   debuild -us -uc
   sudo dpkg --force-depends -i ../notify-osd_0.9.35+14.04.20140213-0ubuntu1_amd64.deb
   

   

例子：

1. 颜色，试试这个例子安静的红色，渐变点：RGB (0.9f,0.6f,0.6f),(0.5f,0.3f,0.3f) & (0.4f,0.2f,0.2f)

   在bubble.c，_draw_value_indicator()功能如下// draw value-bar：

           gradient = cairo_pattern_create_linear (0.0f,
                                                   start_y +
                                                   outline_thickness,
                                                   0.0f,
                                                   start_y +
                                                   outline_height -
                                                   2 * outline_thickness);
           cairo_pattern_add_color_stop_rgba (gradient,
                                              0.0f,
                                              0.9f,
                                              0.6f,
                                              0.6f,
                                              1.0f);
           cairo_pattern_add_color_stop_rgba (gradient,
                                              0.75f,
                                              0.5f,
                                              0.3f,
                                              0.3f,
                                              1.0f);
           cairo_pattern_add_color_stop_rgba (gradient,
                                              1.0f,
                                              0.4f,
                                              0.2f,
                                              0.2f,
                                              1.0f);
   
           cairo_set_source (cr, gradient);
           cairo_fill (cr);
   

   看cairo_pattern_add_color_stop_rgba ()在开罗文档中。

   评论轮廓绘图说明使用/*&*/因此没有黑色轮廓，bar_radius = outline_height / 2;以获得圆形的条形。

   // draw bar-background
   /*
   cairo_set_line_width (cr, outline_thickness);
   cairo_set_source_rgba (cr, 0.0f, 0.0f, 0.0f, 0.5f);
   draw_round_rect (cr,
   [...]
   cairo_fill (cr);
   cairo_pattern_destroy (gradient);
   */
   //bar_radius = outline_radius;
   bar_radius = outline_height / 2;
   bar_width  = outline_width - 2 * outline_radius;
   //bar_height = outline_height - outline_radius;
   
   // draw value-bar
   

2. 大小适合1.2f，与图标相配

   #define DEFAULT_GAUGE_SIZE           1.2f
   [...]
       property_gauge_size = g_param_spec_double (
                               "gauge-size",
                               "gauge-size",
                               "Size/height (in em) of gauge/indicator",
                               0.5f,
                               5.0f,
   

3. 这里是为什么它被裁剪的原因，这应该是一个错误。

   在 中bubble.c，EM2PIXELS (defaults_get_icon_size (d), d) / 5.0f它应该用来EM2PIXELS (defaults_get_gauge_size (d), d)设置仪表绘图区域的高度。

   将该行替换为：

   void
   _refresh_indicator (Bubble* self)
   {
   [...]
       // create temp. scratch surface
       normal = cairo_image_surface_create (
               CAIRO_FORMAT_ARGB32,
               EM2PIXELS (defaults_get_bubble_width (d), d) -
               3 * EM2PIXELS (defaults_get_margin_size (d), d) -
               EM2PIXELS (defaults_get_icon_size (d), d)
               + 2 * BUBBLE_CONTENT_BLUR_RADIUS,
               EM2PIXELS (defaults_get_icon_size (d), d) / 5.0f
               + 2 * BUBBLE_CONTENT_BLUR_RADIUS);
   

   到：

   void
   _refresh_indicator (Bubble* self)
   {
   [...]
       // create temp. scratch surface
       normal = cairo_image_surface_create (
               CAIRO_FORMAT_ARGB32,
               EM2PIXELS (defaults_get_bubble_width (d), d) -
               3 * EM2PIXELS (defaults_get_margin_size (d), d) -
               EM2PIXELS (defaults_get_icon_size (d), d)
               + 2 * BUBBLE_CONTENT_BLUR_RADIUS,
               EM2PIXELS (defaults_get_gauge_size (d), d)
               + 2 * BUBBLE_CONTENT_BLUR_RADIUS);