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[gnome-terminal/gnome-3-34-ntfy-opn-ttl-ts: 1/16] Restore transparency

commit 68b3fecbba942616a19eafb2821c208828ef305e
Author: Debarshi Ray <debarshir gnome org>
Date:   Mon May 12 14:57:18 2014 +0200

    Restore transparency
    
    The transparency settings were removed as a side effect of
    2bff4b63ed3ceef6055e35563e9b0b33ad57349d
    
    This restores them and you will need a compositing window manager to
    use it. The background image setting, also known as faux transparency,
    was not restored.
    
    The transparency checkbox lost its mnemonic accelerator because 't'
    is already taken and using any other letter would make it hard to
    restore the translations of the string.
    
    Some changes by Peter Weber <peter weber mailbox org>

 src/org.gnome.Terminal.gschema.xml | 10 ++++++++
 src/preferences.ui                 | 47 ++++++++++++++++++++++++++++++++++++++
 src/profile-editor.c               | 16 +++++++++++++
 src/terminal-schemas.h             |  3 +++
 src/terminal-screen.c              | 22 +++++++++++++++++-
 src/terminal-window.c              |  7 ++++++
 6 files changed, 104 insertions(+), 1 deletion(-)
---
diff --git a/src/org.gnome.Terminal.gschema.xml b/src/org.gnome.Terminal.gschema.xml
index e4e0c003..1b0fb22b 100644
--- a/src/org.gnome.Terminal.gschema.xml
+++ b/src/org.gnome.Terminal.gschema.xml
@@ -395,6 +395,16 @@
       <default>'narrow'</default>
       <summary>Whether ambiguous-width characters are narrow or wide when using UTF-8 encoding</summary>
     </key>
+    <key name="use-transparent-background" type="b">
+      <default>false</default>
+      <summary>Whether to use a transparent background</summary>
+    </key>
+    <key name="background-transparency-percent" type="i">
+      <default>50</default>
+      <range min="0" max="100"/>
+      <summary>Adjust the amount of transparency</summary>
+      <description>A value between 0 and 100, where 0 is opaque and 100 is fully transparent.</description>
+    </key>
   </schema>
 
   <!-- Keybinding settings -->
diff --git a/src/preferences.ui b/src/preferences.ui
index 4788959a..47f1cf8a 100644
--- a/src/preferences.ui
+++ b/src/preferences.ui
@@ -77,6 +77,11 @@
     <property name="step_increment">0.05</property>
     <property name="page_increment">0.25</property>
   </object>
+  <object class="GtkAdjustment" id="background-transparent-adjustment">
+    <property name="upper">100</property>
+    <property name="step_increment">1</property>
+    <property name="page_increment">10</property>
+  </object>
   <object class="GtkListStore" id="cjk-ambiguous-width-model">
     <columns>
       <!-- column-name gchararray -->
@@ -1317,6 +1322,48 @@
                                             <property name="position">1</property>
                                           </packing>
                                         </child>
+                                        <child>
+                                          <object class="GtkBox" id="use-transparent-background-box">
+                                            <property name="visible">True</property>
+                                            <property name="can_focus">False</property>
+                                            <property name="orientation">horizontal</property>
+                                            <property name="spacing">12</property>
+                                            <child>
+                                              <object class="GtkCheckButton" id="use-transparent-background">
+                                                <property name="label" translatable="yes">Transparent 
background</property>
+                                                <property name="visible">True</property>
+                                                <property name="can_focus">True</property>
+                                                <property name="receives_default">False</property>
+                                                <property name="use_underline">True</property>
+                                                <property name="xalign">0</property>
+                                                <property name="draw_indicator">True</property>
+                                              </object>
+                                              <packing>
+                                                <property name="expand">False</property>
+                                                <property name="fill">False</property>
+                                                <property name="position">0</property>
+                                              </packing>
+                                            </child>
+                                            <child>
+                                              <object class="GtkScale" id="background-transparent-scale">
+                                                <property name="visible">True</property>
+                                                <property name="can_focus">True</property>
+                                                <property 
name="adjustment">background-transparent-adjustment</property>
+                                                <property name="draw_value">False</property>
+                                              </object>
+                                              <packing>
+                                                <property name="expand">True</property>
+                                                <property name="fill">True</property>
+                                                <property name="position">1</property>
+                                              </packing>
+                                            </child>
+                                          </object>
+                                          <packing>
+                                            <property name="expand">True</property>
+                                            <property name="fill">True</property>
+                                            <property name="position">2</property>
+                                          </packing>
+                                        </child>
                                       </object>
                                     </child>
                                   </object>
diff --git a/src/profile-editor.c b/src/profile-editor.c
index 1912c8cf..a0081e23 100644
--- a/src/profile-editor.c
+++ b/src/profile-editor.c
@@ -1254,6 +1254,22 @@ profile_prefs_load (const char *uuid, GSettings *profile)
                                w,
                                "active-id",
                                G_SETTINGS_BIND_GET | G_SETTINGS_BIND_SET);
+
+  profile_prefs_settings_bind (profile,
+                               TERMINAL_PROFILE_USE_TRANSPARENT_BACKGROUND,
+                               gtk_builder_get_object (builder, "use-transparent-background"),
+                               "active",
+                               G_SETTINGS_BIND_GET | G_SETTINGS_BIND_SET);
+  profile_prefs_settings_bind (profile,
+                               TERMINAL_PROFILE_USE_TRANSPARENT_BACKGROUND,
+                               gtk_builder_get_object (builder, "background-transparent-scale"),
+                               "sensitive",
+                               G_SETTINGS_BIND_GET | G_SETTINGS_BIND_NO_SENSITIVITY);
+  profile_prefs_settings_bind (profile,
+                               TERMINAL_PROFILE_BACKGROUND_TRANSPARENCY_PERCENT,
+                               gtk_builder_get_object (builder, "background-transparent-adjustment"),
+                               "value",
+                               G_SETTINGS_BIND_GET | G_SETTINGS_BIND_SET);
 }
 
 /* Called once per Preferences window, to destroy stuff that doesn't depend on the profile being edited */
diff --git a/src/terminal-schemas.h b/src/terminal-schemas.h
index ef30bd59..a386938b 100644
--- a/src/terminal-schemas.h
+++ b/src/terminal-schemas.h
@@ -73,6 +73,9 @@ G_BEGIN_DECLS
 #define TERMINAL_PROFILE_VISIBLE_NAME_KEY               "visible-name"
 #define TERMINAL_PROFILE_WORD_CHAR_EXCEPTIONS_KEY       "word-char-exceptions"
 
+#define TERMINAL_PROFILE_USE_TRANSPARENT_BACKGROUND      "use-transparent-background"
+#define TERMINAL_PROFILE_BACKGROUND_TRANSPARENCY_PERCENT "background-transparency-percent"
+
 #define TERMINAL_SETTING_CONFIRM_CLOSE_KEY              "confirm-close"
 #define TERMINAL_SETTING_DEFAULT_SHOW_MENUBAR_KEY       "default-show-menubar"
 #define TERMINAL_SETTING_ENABLE_MENU_BAR_ACCEL_KEY      "menu-accelerator-enabled"
diff --git a/src/terminal-screen.c b/src/terminal-screen.c
index a85fcefd..26202e45 100644
--- a/src/terminal-screen.c
+++ b/src/terminal-screen.c
@@ -800,7 +800,9 @@ terminal_screen_profile_changed_cb (GSettings     *profile,
       prop_name == I_(TERMINAL_PROFILE_HIGHLIGHT_COLORS_SET_KEY) ||
       prop_name == I_(TERMINAL_PROFILE_HIGHLIGHT_BACKGROUND_COLOR_KEY) ||
       prop_name == I_(TERMINAL_PROFILE_HIGHLIGHT_FOREGROUND_COLOR_KEY) ||
-      prop_name == I_(TERMINAL_PROFILE_PALETTE_KEY))
+      prop_name == I_(TERMINAL_PROFILE_PALETTE_KEY) ||
+      prop_name == I_(TERMINAL_PROFILE_USE_TRANSPARENT_BACKGROUND) ||
+      prop_name == I_(TERMINAL_PROFILE_BACKGROUND_TRANSPARENCY_PERCENT))
     update_color_scheme (screen);
 
   if (!prop_name || prop_name == I_(TERMINAL_PROFILE_AUDIBLE_BELL_KEY))
@@ -877,6 +879,8 @@ update_color_scheme (TerminalScreen *screen)
   GdkRGBA *cursor_bgp = NULL, *cursor_fgp = NULL;
   GdkRGBA *highlight_bgp = NULL, *highlight_fgp = NULL;
   GtkStyleContext *context;
+  GtkWidget *toplevel;
+  gboolean transparent;
   gboolean use_theme_colors;
 
   context = gtk_widget_get_style_context (widget);
@@ -918,6 +922,18 @@ update_color_scheme (TerminalScreen *screen)
     }
 
   colors = terminal_g_settings_get_rgba_palette (priv->profile, TERMINAL_PROFILE_PALETTE_KEY, &n_colors);
+
+  transparent = g_settings_get_boolean (profile, TERMINAL_PROFILE_USE_TRANSPARENT_BACKGROUND);
+  if (transparent)
+    {
+      gint transparency_percent;
+
+      transparency_percent = g_settings_get_int (profile, TERMINAL_PROFILE_BACKGROUND_TRANSPARENCY_PERCENT);
+      bg.alpha = (100 - transparency_percent) / 100.0;
+    }
+  else
+    bg.alpha = 1.0;
+
   vte_terminal_set_colors (VTE_TERMINAL (screen), &fg, &bg,
                            colors, n_colors);
   vte_terminal_set_color_bold (VTE_TERMINAL (screen), boldp);
@@ -925,6 +941,10 @@ update_color_scheme (TerminalScreen *screen)
   vte_terminal_set_color_cursor_foreground (VTE_TERMINAL (screen), cursor_fgp);
   vte_terminal_set_color_highlight (VTE_TERMINAL (screen), highlight_bgp);
   vte_terminal_set_color_highlight_foreground (VTE_TERMINAL (screen), highlight_fgp);
+
+  toplevel = gtk_widget_get_toplevel (GTK_WIDGET (screen));
+  if (toplevel != NULL && gtk_widget_is_toplevel (toplevel))
+    gtk_widget_set_app_paintable (toplevel, transparent);
 }
 
 static void
diff --git a/src/terminal-window.c b/src/terminal-window.c
index 19198f49..5ba767c5 100644
--- a/src/terminal-window.c
+++ b/src/terminal-window.c
@@ -2125,6 +2125,8 @@ terminal_window_init (TerminalWindow *window)
   };
   TerminalWindowPrivate *priv;
   TerminalApp *app;
+  GdkScreen *screen;
+  GdkVisual *visual;
   GSettings *gtk_debug_settings;
   GtkWindowGroup *window_group;
   //  GtkAccelGroup *accel_group;
@@ -2140,6 +2142,11 @@ terminal_window_init (TerminalWindow *window)
 
   gtk_widget_init_template (GTK_WIDGET (window));
 
+  screen = gtk_widget_get_screen (GTK_WIDGET (window));
+  visual = gdk_screen_get_rgba_visual (screen);
+  if (visual != NULL)
+    gtk_widget_set_visual (GTK_WIDGET (window), visual);
+
   uuid_generate (u);
   uuid_unparse (u, uuidstr);
   priv->uuid = g_strdup (uuidstr);
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