Enable help button and title in color dialogs

src/gui/qgscolorbrewercolorrampdialog.cpp

@@ -124,10 +124,17 @@ QgsColorBrewerColorRampDialog::QgsColorBrewerColorRampDialog( const QgsColorBrew
   QVBoxLayout *vLayout = new QVBoxLayout();
   mWidget = new QgsColorBrewerColorRampWidget( ramp );
   vLayout->addWidget( mWidget );
-  QDialogButtonBox *bbox = new QDialogButtonBox( QDialogButtonBox::Ok | QDialogButtonBox::Cancel, Qt::Horizontal );
+  QDialogButtonBox *bbox = new QDialogButtonBox( QDialogButtonBox::Cancel | QDialogButtonBox::Help | QDialogButtonBox::Ok, Qt::Horizontal );
   connect( bbox, &QDialogButtonBox::accepted, this, &QDialog::accept );
   connect( bbox, &QDialogButtonBox::rejected, this, &QDialog::reject );
+  connect( bbox, &QDialogButtonBox::helpRequested, this, &QgsColorBrewerColorRampDialog::showHelp );
   vLayout->addWidget( bbox );
   setLayout( vLayout );
+  setWindowTitle( tr( "ColorBrewer Ramp" ) );
   connect( mWidget, &QgsColorBrewerColorRampWidget::changed, this, &QgsColorBrewerColorRampDialog::changed );
 }
+
+void QgsColorBrewerColorRampDialog::showHelp()
+{
+  QgsHelp::openHelp( QStringLiteral( "working_with_vector/style_library.html#color-ramp" ) );
+}

src/gui/qgscolorbrewercolorrampdialog.h

@@ -19,6 +19,7 @@
 #include <QDialog>
 #include "qgspanelwidget.h"
 #include "qgscolorramp.h"
+#include "qgshelp.h"
 #include "ui_qgscolorbrewercolorrampwidgetbase.h"
 #include "qgis_gui.h"
 #include "qgis.h"
@@ -118,6 +119,10 @@ class GUI_EXPORT QgsColorBrewerColorRampDialog : public QDialog
 
     QgsColorBrewerColorRampWidget *mWidget = nullptr;
 
+  private slots:
+
+    void showHelp();
+
 };
 
 #endif

src/gui/qgslimitedrandomcolorrampdialog.cpp

@@ -121,10 +121,17 @@ QgsLimitedRandomColorRampDialog::QgsLimitedRandomColorRampDialog( const QgsLimit
   QVBoxLayout *vLayout = new QVBoxLayout();
   mWidget = new QgsLimitedRandomColorRampWidget( ramp );
   vLayout->addWidget( mWidget );
-  QDialogButtonBox *bbox = new QDialogButtonBox( QDialogButtonBox::Ok | QDialogButtonBox::Cancel, Qt::Horizontal );
+  QDialogButtonBox *bbox = new QDialogButtonBox( QDialogButtonBox::Cancel | QDialogButtonBox::Help | QDialogButtonBox::Ok, Qt::Horizontal );
   connect( bbox, &QDialogButtonBox::accepted, this, &QDialog::accept );
   connect( bbox, &QDialogButtonBox::rejected, this, &QDialog::reject );
+  connect( bbox, &QDialogButtonBox::helpRequested, this, &QgsLimitedRandomColorRampDialog::showHelp );
   vLayout->addWidget( bbox );
   setLayout( vLayout );
+  setWindowTitle( tr( "Random Color Ramp" ) );
   connect( mWidget, &QgsLimitedRandomColorRampWidget::changed, this, &QgsLimitedRandomColorRampDialog::changed );
 }
+
+void QgsLimitedRandomColorRampDialog::showHelp()
+{
+  QgsHelp::openHelp( QStringLiteral( "working_with_vector/style_library.html#color-ramp" ) );
+}

src/gui/qgslimitedrandomcolorrampdialog.h

@@ -20,6 +20,7 @@
 #include "qgis.h"
 #include "qgspanelwidget.h"
 #include "qgscolorramp.h"
+#include "qgshelp.h"
 #include "ui_qgslimitedrandomcolorrampwidgetbase.h"
 #include "qgis_gui.h"
 
@@ -129,6 +130,10 @@ class GUI_EXPORT QgsLimitedRandomColorRampDialog : public QDialog
 
     QgsLimitedRandomColorRampWidget *mWidget = nullptr;
 
+  private slots:
+
+    void showHelp();
+
 };
 
 #endif

src/gui/qgspresetcolorrampdialog.cpp

@@ -112,10 +112,17 @@ QgsPresetColorRampDialog::QgsPresetColorRampDialog( const QgsPresetSchemeColorRa
   QVBoxLayout *vLayout = new QVBoxLayout();
   mWidget = new QgsPresetColorRampWidget( ramp );
   vLayout->addWidget( mWidget );
-  QDialogButtonBox *bbox = new QDialogButtonBox( QDialogButtonBox::Ok | QDialogButtonBox::Cancel, Qt::Horizontal );
+  QDialogButtonBox *bbox = new QDialogButtonBox( QDialogButtonBox::Cancel | QDialogButtonBox::Help | QDialogButtonBox::Ok, Qt::Horizontal );
   connect( bbox, &QDialogButtonBox::accepted, this, &QDialog::accept );
   connect( bbox, &QDialogButtonBox::rejected, this, &QDialog::reject );
+  connect( bbox, &QDialogButtonBox::helpRequested, this, &QgsPresetColorRampDialog::showHelp );
   vLayout->addWidget( bbox );
   setLayout( vLayout );
+  setWindowTitle( tr( "Color Presets Ramp" ) );
   connect( mWidget, &QgsPresetColorRampWidget::changed, this, &QgsPresetColorRampDialog::changed );
 }
+
+void QgsPresetColorRampDialog::showHelp()
+{
+  QgsHelp::openHelp( QStringLiteral( "working_with_vector/style_library.html#color-ramp" ) );
+}

src/gui/qgspresetcolorrampdialog.h

@@ -20,6 +20,7 @@
 #include "qgis.h"
 #include "qgspanelwidget.h"
 #include "qgscolorramp.h"
+#include "qgshelp.h"
 #include "ui_qgspresetcolorrampwidgetbase.h"
 #include "qgis_gui.h"
 
@@ -117,6 +118,10 @@ class GUI_EXPORT QgsPresetColorRampDialog : public QDialog
 
     QgsPresetColorRampWidget *mWidget = nullptr;
 
+  private slots:
+
+    void showHelp();
+
 };
 
 #endif //QGSPRESETCOLORRAMPDIALOG_H

src/gui/symbology/qgscptcitycolorrampdialog.cpp

@@ -464,6 +464,7 @@ void QgsCptCityColorRampDialog::showHelp()
                          "(you must enable Experimental plugins in the plugin manager).\n\n"
                        );
   QMessageBox *msg = new QMessageBox( this );
+  msg->setWindowTitle( tr( "Download more cpt-city Gradients" ) );
   msg->setText( helpText );
   msg->exec();
 }

src/ui/qgspresetcolorrampwidgetbase.ui

@@ -11,7 +11,7 @@
    </rect>
   </property>
   <property name="windowTitle">
-   <string>ColorBrewer Ramp</string>
+   <string>Color Presets Ramp</string>
   </property>
   <layout class="QVBoxLayout" name="verticalLayout" stretch="1,0,0">
    <item>