Qt: Make "Learn" on the welcome screen clickable.

Make the "Learn" header a ClickableLabel to match "Open" and "Capture".
Link to the docs page for now. Adjust its stylesheet and properties to
match ast well.

Change-Id: Id9c7c05269de8134af28f0f9c1e2820a60442236
Reviewed-on: https://code.wireshark.org/review/18358
Reviewed-by: Gerald Combs <gerald@wireshark.org>
Petri-Dish: Gerald Combs <gerald@wireshark.org>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Anders Broman <a.broman58@gmail.com>

5 files changed, 28 insertions, 11 deletions

diff --git a/ui/help_url.c b/ui/help_url.c
index 5ea67ba53f..af12f19c9e 100644
--- a/ui/help_url.c
+++ b/ui/help_url.c
@@ -76,6 +76,9 @@ topic_online_url(topic_action_e action)
     case(ONLINEPAGE_DOWNLOAD):
         return "https://www.wireshark.org/download.html";
         break;
+    case(ONLINEPAGE_DOCS):
+        return "https://www.wireshark.org/docs/";
+        break;
     case(ONLINEPAGE_USERGUIDE):
         return "https://www.wireshark.org/docs/wsug_html_chunked/";
         break;
diff --git a/ui/help_url.h b/ui/help_url.h
index b88b560357..213ef65fb8 100644
--- a/ui/help_url.h
+++ b/ui/help_url.h
@@ -42,6 +42,7 @@ typedef enum {
     ONLINEPAGE_USERGUIDE,
     ONLINEPAGE_FAQ,
     ONLINEPAGE_DOWNLOAD,
+    ONLINEPAGE_DOCS,
     ONLINEPAGE_SAMPLE_FILES,
     ONLINEPAGE_CAPTURE_SETUP,
     ONLINEPAGE_NETWORK_MEDIA,
diff --git a/ui/qt/main_welcome.cpp b/ui/qt/main_welcome.cpp
index 8f2df3e290..ce1162e5f2 100644
--- a/ui/qt/main_welcome.cpp
+++ b/ui/qt/main_welcome.cpp
@@ -26,6 +26,7 @@
 #include <epan/prefs.h>
 
 #include "ui/capture_globals.h"
+#include "ui/help_url.h"
 
 #include "ws_version_info.h"
 
@@ -37,6 +38,7 @@
 #include "wireshark_application.h"
 
 #include <QClipboard>
+#include <QDesktopServices>
 #include <QDir>
 #include <QListWidget>
 #include <QMenu>
@@ -97,17 +99,16 @@ MainWelcome::MainWelcome(QWidget *parent) :
             .arg(tango_sky_blue_2, 6, 16, QChar('0'));   // Background color
     welcome_ui_->mainWelcomeBanner->setStyleSheet(welcome_ss);
 
-    QString title_ss = QString(
-                "QLabel {"
-                "  color: #%1;"
-                "}"
-                )
-            .arg(tango_aluminium_4, 6, 16, QChar('0'));   // Text color
-    QString title_button_ss = title_ss + QString(
-            "QLabel::hover {"
+    QString title_button_ss = QString(
+            "QLabel {"
             "  color: #%1;"
             "}"
-            ).arg(tango_sky_blue_4, 6, 16, QChar('0'));
+            "QLabel::hover {"
+            "  color: #%2;"
+            "}"
+            )
+            .arg(tango_aluminium_4, 6, 16, QChar('0'))   // Text color
+            .arg(tango_sky_blue_4, 6, 16, QChar('0'));    // Hover color
 
     // XXX Is there a better term than "flavor"? Provider? Admonition (a la DocBook)?
     // Release_source?
@@ -138,7 +139,7 @@ MainWelcome::MainWelcome(QWidget *parent) :
     }
     welcome_ui_->captureLabel->setStyleSheet(title_button_ss);
     welcome_ui_->recentLabel->setStyleSheet(title_button_ss);
-    welcome_ui_->helpLabel->setStyleSheet(title_ss);
+    welcome_ui_->helpLabel->setStyleSheet(title_button_ss);
 
 #ifdef Q_OS_MAC
     recent_files_->setAttribute(Qt::WA_MacShowFocusRect, false);
@@ -503,6 +504,11 @@ void MainWelcome::on_captureLabel_clicked()
     wsApp->doTriggerMenuItem(WiresharkApplication::CaptureOptionsDialog);
 }
 
+void MainWelcome::on_helpLabel_clicked()
+{
+    QDesktopServices::openUrl(QUrl(topic_online_url(ONLINEPAGE_DOCS)));
+}
+
 void MainWelcome::on_recentLabel_clicked()
 {
     wsApp->doTriggerMenuItem(WiresharkApplication::FileOpenDialog);
diff --git a/ui/qt/main_welcome.h b/ui/qt/main_welcome.h
index 81d087f4a8..a001f5b5c1 100644
--- a/ui/qt/main_welcome.h
+++ b/ui/qt/main_welcome.h
@@ -55,6 +55,7 @@ protected:
 protected slots:
     void on_recentLabel_clicked();
     void on_captureLabel_clicked();
+    void on_helpLabel_clicked();
 
 private:
     Ui::MainWelcome *welcome_ui_;
diff --git a/ui/qt/main_welcome.ui b/ui/qt/main_welcome.ui
index 4b63b084f4..b791c78a4a 100644
--- a/ui/qt/main_welcome.ui
+++ b/ui/qt/main_welcome.ui
@@ -236,7 +236,13 @@
        </widget>
       </item>
       <item>
-       <widget class="QLabel" name="helpLabel">
+       <widget class="ClickableLabel" name="helpLabel">
+        <property name="sizePolicy">
+         <sizepolicy hsizetype="Fixed" vsizetype="Preferred">
+          <horstretch>0</horstretch>
+          <verstretch>0</verstretch>
+         </sizepolicy>
+        </property>
         <property name="text">
          <string>&lt;h2&gt;Learn&lt;/h2&gt;</string>
         </property>