Improve toolbar appearence with GTK+ 3

Use symbolic icons for the toolbar. Also mark it as primary toolbar to
have appearance consistent with other applications, particularly on
Ubuntu.

Author: vslavik

artwork/Makefile.am

@@ -9,6 +9,7 @@ appicons512dir=$(iconsdir)/512x512/apps
 pixmapsdir=$(datadir)/pixmaps
 
 uiiconsdir=$(datadir)/poedit/icons
+uiiconssymbolicdir=$(uiiconsdir)/hicolor/scalable/actions
 
 dist_appicons16_DATA = linux/appicon/16x16/apps/poedit.png
 dist_appicons24_DATA = linux/appicon/24x24/apps/poedit.png
@@ -19,6 +20,12 @@ dist_appicons512_DATA = linux/appicon/512x512/apps/poedit.png
 
 dist_pixmaps_DATA = linux/appicon/48x48/apps/poedit.png
 
+dist_uiiconssymbolic_DATA = \
+		linux/poedit-sync-symbolic.svg \
+		linux/poedit-update-symbolic.svg \
+		linux/poedit-validate-symbolic.svg \
+		linux/sidebar-symbolic.svg
+
 dist_uiicons_DATA = \
 		linux/document-new.png \
 		linux/document-open.png \

artwork/linux/poedit-sync-symbolic.svg

@@ -29,6 +29,10 @@
 
 #include <set>
 
+#ifdef __WXGTK__
+#include <gtk/gtk.h>
+#endif
+
 #include "icons.h"
 
 #include "colorscheme.h"
@@ -112,6 +116,26 @@ void ProcessTemplateImage(wxImage& img, bool keepOpaque, bool inverted)
 
 } // anonymous namespace
 
+
+
+PoeditArtProvider::PoeditArtProvider()
+{
+#ifdef __WXGTK3__
+    gtk_icon_theme_prepend_search_path(gtk_icon_theme_get_default(), GetIconsDir().fn_str());
+#endif
+}
+
+
+wxString PoeditArtProvider::GetIconsDir()
+{
+#if defined(__WXMSW__)
+    return wxStandardPaths::Get().GetResourcesDir() + "\\Resources";
+#else
+    return wxStandardPaths::Get().GetInstallPrefix() + "/share/poedit/icons";
+#endif
+}
+
+
 wxBitmap PoeditArtProvider::CreateBitmap(const wxArtID& id_,
                                          const wxArtClient& client,
                                          const wxSize& size)
@@ -147,12 +171,7 @@ wxBitmap PoeditArtProvider::CreateBitmap(const wxArtID& id_,
     }
 #endif // __WXGTK20__
 
-    wxString iconsdir =
-#if defined(__WXMSW__)
-        wxStandardPaths::Get().GetResourcesDir() + "\\Resources";
-#else
-        wxStandardPaths::Get().GetInstallPrefix() + "/share/poedit/icons";
-#endif
+    auto iconsdir = GetIconsDir();
     if ( !wxDirExists(iconsdir) )
     {
         wxLogTrace("poedit.icons",

artwork/linux/poedit-update-symbolic.svg

@@ -35,7 +35,12 @@
 #ifndef __WXOSX__
 class PoeditArtProvider : public wxArtProvider
 {
+public:
+    PoeditArtProvider();
+
 protected:
+    static wxString GetIconsDir();
+
     virtual wxBitmap CreateBitmap(const wxArtID& id,
                                   const wxArtClient& client,
                                   const wxSize& size);

artwork/linux/poedit-validate-symbolic.svg

@@ -38,6 +38,10 @@
 #include <wx/msw/uxtheme.h>
 #endif
 
+#ifdef __WXGTK__
+#include <gtk/gtk.h>
+#endif
+
 
 class WXMainToolbar : public MainToolbar
 {
@@ -47,6 +51,15 @@ class WXMainToolbar : public MainToolbar
         m_tb = wxXmlResource::Get()->LoadToolBar(parent, "toolbar");
         m_idUpdate = XRCID("toolbar_update");
 
+#ifdef __WXGTK3__
+        gtk_style_context_add_class(gtk_widget_get_style_context(GTK_WIDGET(Toolbar())), GTK_STYLE_CLASS_PRIMARY_TOOLBAR);
+        SetIcon(0 , "document-open-symbolic");
+        SetIcon(1 , "document-save-symbolic");
+        SetIcon(3 , "poedit-validate-symbolic");
+        SetIcon(4 , "poedit-update-symbolic");
+        SetIcon(6 , "sidebar-symbolic");
+#endif
+
 #ifdef __WXMSW__
         // De-uglify the toolbar a bit on Windows 10:
         if (IsWindows10OrGreater())
@@ -72,7 +85,11 @@ class WXMainToolbar : public MainToolbar
         {
             tool->SetLabel(_("Sync"));
             tool->SetShortHelp(_("Synchronize the translation with Crowdin"));
+            #ifdef __WXGTK3__
+            SetIcon(4 , "poedit-sync-symbolic");
+            #else
             m_tb->SetToolNormalBitmap(m_idUpdate, wxArtProvider::GetBitmap("poedit-sync", wxART_TOOLBAR));
+            #endif
             #ifdef __WXMSW__
             m_tb->SetToolDisabledBitmap(m_idUpdate, wxArtProvider::GetBitmap("poedit-sync@disabled", wxART_TOOLBAR));
             #endif
@@ -81,13 +98,36 @@ class WXMainToolbar : public MainToolbar
         {
             tool->SetLabel(MSW_OR_OTHER(_("Update from code"), _("Update from Code")));
             tool->SetShortHelp(_("Update catalog - synchronize it with sources"));
+            #ifdef __WXGTK3__
+            SetIcon(4 , "poedit-update-symbolic");
+            #else
             m_tb->SetToolNormalBitmap(m_idUpdate, wxArtProvider::GetBitmap("poedit-update", wxART_TOOLBAR));
+            #endif
             #ifdef __WXMSW__
             m_tb->SetToolDisabledBitmap(m_idUpdate, wxArtProvider::GetBitmap("poedit-update@disabled", wxART_TOOLBAR));
             #endif
         }
     }
 
+#ifdef __WXGTK3__
+private:
+    GtkToolbar *Toolbar()
+    {
+    #ifdef __WXGTK4__
+        return GTK_TOOLBAR(m_tb->GetHandle());
+    #else
+        return GTK_TOOLBAR(gtk_bin_get_child(GTK_BIN(m_tb->GetHandle())));
+    #endif
+    }
+
+    void SetIcon(int index, const char *name)
+    {
+         GtkToolItem *i = gtk_toolbar_get_nth_item(Toolbar(), index);
+         gtk_tool_button_set_icon_widget(GTK_TOOL_BUTTON(i), NULL);
+         gtk_tool_button_set_icon_name(GTK_TOOL_BUTTON(i), name);
+    } 
+#endif
+
 private:
     wxToolBar *m_tb;
     int m_idUpdate;