qt: Introduce PlatformStyle

Introduce a PlatformStyle to handle platform-specific customization of
the UI.

This replaces 'scicon', as well as #ifdefs to determine whether to place
icons on buttons.

The selected PlatformStyle defaults to the platform that the application
was compiled on, but can be overridden from the command line with
`-uiplatform=<x>`.

Also fixes the warning from #6328.

1 files changed, 35 insertions, 34 deletions

diff --git a/src/qt/bitcoingui.cpp b/src/qt/bitcoingui.cpp
index 396435f12b..1d3f7762ab 100644
--- a/src/qt/bitcoingui.cpp
+++ b/src/qt/bitcoingui.cpp
@@ -13,8 +13,8 @@
 #include "openuridialog.h"
 #include "optionsdialog.h"
 #include "optionsmodel.h"
+#include "platformstyle.h"
 #include "rpcconsole.h"
-#include "scicon.h"
 #include "utilitydialog.h"
 
 #ifdef ENABLE_WALLET
@@ -60,7 +60,7 @@
 
 const QString BitcoinGUI::DEFAULT_WALLET = "~Default";
 
-BitcoinGUI::BitcoinGUI(const NetworkStyle *networkStyle, QWidget *parent) :
+BitcoinGUI::BitcoinGUI(const PlatformStyle *platformStyle, const NetworkStyle *networkStyle, QWidget *parent) :
     QMainWindow(parent),
     clientModel(0),
     walletFrame(0),
@@ -98,7 +98,8 @@ BitcoinGUI::BitcoinGUI(const NetworkStyle *networkStyle, QWidget *parent) :
     notificator(0),
     rpcConsole(0),
     prevBlocks(0),
-    spinnerFrame(0)
+    spinnerFrame(0),
+    platformStyle(platformStyle)
 {
     GUIUtil::restoreWindowGeometry("nWindow", QSize(850, 550), this);
 
@@ -130,12 +131,12 @@ BitcoinGUI::BitcoinGUI(const NetworkStyle *networkStyle, QWidget *parent) :
     setUnifiedTitleAndToolBarOnMac(true);
 #endif
 
-    rpcConsole = new RPCConsole(0);
+    rpcConsole = new RPCConsole(platformStyle, 0);
 #ifdef ENABLE_WALLET
     if(enableWallet)
     {
         /** Create wallet frame and make it the central widget */
-        walletFrame = new WalletFrame(this);
+        walletFrame = new WalletFrame(platformStyle, this);
         setCentralWidget(walletFrame);
     } else
 #endif // ENABLE_WALLET
@@ -175,7 +176,7 @@ BitcoinGUI::BitcoinGUI(const NetworkStyle *networkStyle, QWidget *parent) :
     QHBoxLayout *frameBlocksLayout = new QHBoxLayout(frameBlocks);
     frameBlocksLayout->setContentsMargins(3,0,3,0);
     frameBlocksLayout->setSpacing(3);
-    unitDisplayControl = new UnitDisplayStatusBarControl();
+    unitDisplayControl = new UnitDisplayStatusBarControl(platformStyle);
     labelEncryptionIcon = new QLabel();
     labelConnectionsIcon = new QLabel();
     labelBlocksIcon = new QLabel();
@@ -247,36 +248,36 @@ void BitcoinGUI::createActions()
 {
     QActionGroup *tabGroup = new QActionGroup(this);
 
-    overviewAction = new QAction(SingleColorIcon(":/icons/overview"), tr("&Overview"), this);
+    overviewAction = new QAction(platformStyle->SingleColorIcon(":/icons/overview"), tr("&Overview"), this);
     overviewAction->setStatusTip(tr("Show general overview of wallet"));
     overviewAction->setToolTip(overviewAction->statusTip());
     overviewAction->setCheckable(true);
     overviewAction->setShortcut(QKeySequence(Qt::ALT + Qt::Key_1));
     tabGroup->addAction(overviewAction);
 
-    sendCoinsAction = new QAction(SingleColorIcon(":/icons/send"), tr("&Send"), this);
+    sendCoinsAction = new QAction(platformStyle->SingleColorIcon(":/icons/send"), tr("&Send"), this);
     sendCoinsAction->setStatusTip(tr("Send coins to a Bitcoin address"));
     sendCoinsAction->setToolTip(sendCoinsAction->statusTip());
     sendCoinsAction->setCheckable(true);
     sendCoinsAction->setShortcut(QKeySequence(Qt::ALT + Qt::Key_2));
     tabGroup->addAction(sendCoinsAction);
 
-    sendCoinsMenuAction = new QAction(TextColorIcon(":/icons/send"), sendCoinsAction->text(), this);
+    sendCoinsMenuAction = new QAction(platformStyle->TextColorIcon(":/icons/send"), sendCoinsAction->text(), this);
     sendCoinsMenuAction->setStatusTip(sendCoinsAction->statusTip());
     sendCoinsMenuAction->setToolTip(sendCoinsMenuAction->statusTip());
 
-    receiveCoinsAction = new QAction(SingleColorIcon(":/icons/receiving_addresses"), tr("&Receive"), this);
+    receiveCoinsAction = new QAction(platformStyle->SingleColorIcon(":/icons/receiving_addresses"), tr("&Receive"), this);
     receiveCoinsAction->setStatusTip(tr("Request payments (generates QR codes and bitcoin: URIs)"));
     receiveCoinsAction->setToolTip(receiveCoinsAction->statusTip());
     receiveCoinsAction->setCheckable(true);
     receiveCoinsAction->setShortcut(QKeySequence(Qt::ALT + Qt::Key_3));
     tabGroup->addAction(receiveCoinsAction);
 
-    receiveCoinsMenuAction = new QAction(TextColorIcon(":/icons/receiving_addresses"), receiveCoinsAction->text(), this);
+    receiveCoinsMenuAction = new QAction(platformStyle->TextColorIcon(":/icons/receiving_addresses"), receiveCoinsAction->text(), this);
     receiveCoinsMenuAction->setStatusTip(receiveCoinsAction->statusTip());
     receiveCoinsMenuAction->setToolTip(receiveCoinsMenuAction->statusTip());
 
-    historyAction = new QAction(SingleColorIcon(":/icons/history"), tr("&Transactions"), this);
+    historyAction = new QAction(platformStyle->SingleColorIcon(":/icons/history"), tr("&Transactions"), this);
     historyAction->setStatusTip(tr("Browse transaction history"));
     historyAction->setToolTip(historyAction->statusTip());
     historyAction->setCheckable(true);
@@ -300,46 +301,46 @@ void BitcoinGUI::createActions()
     connect(historyAction, SIGNAL(triggered()), this, SLOT(gotoHistoryPage()));
 #endif // ENABLE_WALLET
 
-    quitAction = new QAction(TextColorIcon(":/icons/quit"), tr("E&xit"), this);
+    quitAction = new QAction(platformStyle->TextColorIcon(":/icons/quit"), tr("E&xit"), this);
     quitAction->setStatusTip(tr("Quit application"));
     quitAction->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q));
     quitAction->setMenuRole(QAction::QuitRole);
-    aboutAction = new QAction(TextColorIcon(":/icons/about"), tr("&About Bitcoin Core"), this);
+    aboutAction = new QAction(platformStyle->TextColorIcon(":/icons/about"), tr("&About Bitcoin Core"), this);
     aboutAction->setStatusTip(tr("Show information about Bitcoin Core"));
     aboutAction->setMenuRole(QAction::AboutRole);
-    aboutQtAction = new QAction(TextColorIcon(":/icons/about_qt"), tr("About &Qt"), this);
+    aboutQtAction = new QAction(platformStyle->TextColorIcon(":/icons/about_qt"), tr("About &Qt"), this);
     aboutQtAction->setStatusTip(tr("Show information about Qt"));
     aboutQtAction->setMenuRole(QAction::AboutQtRole);
-    optionsAction = new QAction(TextColorIcon(":/icons/options"), tr("&Options..."), this);
+    optionsAction = new QAction(platformStyle->TextColorIcon(":/icons/options"), tr("&Options..."), this);
     optionsAction->setStatusTip(tr("Modify configuration options for Bitcoin Core"));
     optionsAction->setMenuRole(QAction::PreferencesRole);
-    toggleHideAction = new QAction(TextColorIcon(":/icons/about"), tr("&Show / Hide"), this);
+    toggleHideAction = new QAction(platformStyle->TextColorIcon(":/icons/about"), tr("&Show / Hide"), this);
     toggleHideAction->setStatusTip(tr("Show or hide the main Window"));
 
-    encryptWalletAction = new QAction(TextColorIcon(":/icons/lock_closed"), tr("&Encrypt Wallet..."), this);
+    encryptWalletAction = new QAction(platformStyle->TextColorIcon(":/icons/lock_closed"), tr("&Encrypt Wallet..."), this);
     encryptWalletAction->setStatusTip(tr("Encrypt the private keys that belong to your wallet"));
     encryptWalletAction->setCheckable(true);
-    backupWalletAction = new QAction(TextColorIcon(":/icons/filesave"), tr("&Backup Wallet..."), this);
+    backupWalletAction = new QAction(platformStyle->TextColorIcon(":/icons/filesave"), tr("&Backup Wallet..."), this);
     backupWalletAction->setStatusTip(tr("Backup wallet to another location"));
-    changePassphraseAction = new QAction(TextColorIcon(":/icons/key"), tr("&Change Passphrase..."), this);
+    changePassphraseAction = new QAction(platformStyle->TextColorIcon(":/icons/key"), tr("&Change Passphrase..."), this);
     changePassphraseAction->setStatusTip(tr("Change the passphrase used for wallet encryption"));
-    signMessageAction = new QAction(TextColorIcon(":/icons/edit"), tr("Sign &message..."), this);
+    signMessageAction = new QAction(platformStyle->TextColorIcon(":/icons/edit"), tr("Sign &message..."), this);
     signMessageAction->setStatusTip(tr("Sign messages with your Bitcoin addresses to prove you own them"));
-    verifyMessageAction = new QAction(TextColorIcon(":/icons/verify"), tr("&Verify message..."), this);
+    verifyMessageAction = new QAction(platformStyle->TextColorIcon(":/icons/verify"), tr("&Verify message..."), this);
     verifyMessageAction->setStatusTip(tr("Verify messages to ensure they were signed with specified Bitcoin addresses"));
 
-    openRPCConsoleAction = new QAction(TextColorIcon(":/icons/debugwindow"), tr("&Debug window"), this);
+    openRPCConsoleAction = new QAction(platformStyle->TextColorIcon(":/icons/debugwindow"), tr("&Debug window"), this);
     openRPCConsoleAction->setStatusTip(tr("Open debugging and diagnostic console"));
 
-    usedSendingAddressesAction = new QAction(TextColorIcon(":/icons/address-book"), tr("&Sending addresses..."), this);
+    usedSendingAddressesAction = new QAction(platformStyle->TextColorIcon(":/icons/address-book"), tr("&Sending addresses..."), this);
     usedSendingAddressesAction->setStatusTip(tr("Show the list of used sending addresses and labels"));
-    usedReceivingAddressesAction = new QAction(TextColorIcon(":/icons/address-book"), tr("&Receiving addresses..."), this);
+    usedReceivingAddressesAction = new QAction(platformStyle->TextColorIcon(":/icons/address-book"), tr("&Receiving addresses..."), this);
     usedReceivingAddressesAction->setStatusTip(tr("Show the list of used receiving addresses and labels"));
 
-    openAction = new QAction(TextColorIcon(":/icons/open"), tr("Open &URI..."), this);
+    openAction = new QAction(platformStyle->TextColorIcon(":/icons/open"), tr("Open &URI..."), this);
     openAction->setStatusTip(tr("Open a bitcoin: URI or payment request"));
 
-    showHelpMessageAction = new QAction(TextColorIcon(":/icons/info"), tr("&Command-line options"), this);
+    showHelpMessageAction = new QAction(platformStyle->TextColorIcon(":/icons/info"), tr("&Command-line options"), this);
     showHelpMessageAction->setMenuRole(QAction::NoRole);
     showHelpMessageAction->setStatusTip(tr("Show the Bitcoin Core help message to get a list with possible Bitcoin command-line options"));
 
@@ -650,7 +651,7 @@ void BitcoinGUI::setNumConnections(int count)
     case 7: case 8: case 9: icon = ":/icons/connect_3"; break;
     default: icon = ":/icons/connect_4"; break;
     }
-    labelConnectionsIcon->setPixmap(SingleColorIcon(icon).pixmap(STATUSBAR_ICONSIZE,STATUSBAR_ICONSIZE));
+    labelConnectionsIcon->setPixmap(platformStyle->SingleColorIcon(icon).pixmap(STATUSBAR_ICONSIZE,STATUSBAR_ICONSIZE));
     labelConnectionsIcon->setToolTip(tr("%n active connection(s) to Bitcoin network", "", count));
 }
 
@@ -691,7 +692,7 @@ void BitcoinGUI::setNumBlocks(int count, const QDateTime& blockDate)
     if(secs < 90*60)
     {
         tooltip = tr("Up to date") + QString(".<br>") + tooltip;
-        labelBlocksIcon->setPixmap(SingleColorIcon(":/icons/synced").pixmap(STATUSBAR_ICONSIZE, STATUSBAR_ICONSIZE));
+        labelBlocksIcon->setPixmap(platformStyle->SingleColorIcon(":/icons/synced").pixmap(STATUSBAR_ICONSIZE, STATUSBAR_ICONSIZE));
 
 #ifdef ENABLE_WALLET
         if(walletFrame)
@@ -737,7 +738,7 @@ void BitcoinGUI::setNumBlocks(int count, const QDateTime& blockDate)
         tooltip = tr("Catching up...") + QString("<br>") + tooltip;
         if(count != prevBlocks)
         {
-            labelBlocksIcon->setPixmap(SingleColorIcon(QString(
+            labelBlocksIcon->setPixmap(platformStyle->SingleColorIcon(QString(
                 ":/movies/spinner-%1").arg(spinnerFrame, 3, 10, QChar('0')))
                 .pixmap(STATUSBAR_ICONSIZE, STATUSBAR_ICONSIZE));
             spinnerFrame = (spinnerFrame + 1) % SPINNER_FRAMES;
@@ -931,7 +932,7 @@ void BitcoinGUI::setEncryptionStatus(int status)
         break;
     case WalletModel::Unlocked:
         labelEncryptionIcon->show();
-        labelEncryptionIcon->setPixmap(SingleColorIcon(":/icons/lock_open").pixmap(STATUSBAR_ICONSIZE,STATUSBAR_ICONSIZE));
+        labelEncryptionIcon->setPixmap(platformStyle->SingleColorIcon(":/icons/lock_open").pixmap(STATUSBAR_ICONSIZE,STATUSBAR_ICONSIZE));
         labelEncryptionIcon->setToolTip(tr("Wallet is <b>encrypted</b> and currently <b>unlocked</b>"));
         encryptWalletAction->setChecked(true);
         changePassphraseAction->setEnabled(true);
@@ -939,7 +940,7 @@ void BitcoinGUI::setEncryptionStatus(int status)
         break;
     case WalletModel::Locked:
         labelEncryptionIcon->show();
-        labelEncryptionIcon->setPixmap(SingleColorIcon(":/icons/lock_closed").pixmap(STATUSBAR_ICONSIZE,STATUSBAR_ICONSIZE));
+        labelEncryptionIcon->setPixmap(platformStyle->SingleColorIcon(":/icons/lock_closed").pixmap(STATUSBAR_ICONSIZE,STATUSBAR_ICONSIZE));
         labelEncryptionIcon->setToolTip(tr("Wallet is <b>encrypted</b> and currently <b>locked</b>"));
         encryptWalletAction->setChecked(true);
         changePassphraseAction->setEnabled(true);
@@ -1041,7 +1042,7 @@ void BitcoinGUI::unsubscribeFromCoreSignals()
     uiInterface.ThreadSafeMessageBox.disconnect(boost::bind(ThreadSafeMessageBox, this, _1, _2, _3));
 }
 
-UnitDisplayStatusBarControl::UnitDisplayStatusBarControl() :
+UnitDisplayStatusBarControl::UnitDisplayStatusBarControl(const PlatformStyle *platformStyle) :
     optionsModel(0),
     menu(0)
 {
@@ -1056,7 +1057,7 @@ UnitDisplayStatusBarControl::UnitDisplayStatusBarControl() :
     }
     setMinimumSize(max_width, 0);
     setAlignment(Qt::AlignRight | Qt::AlignVCenter);
-    setStyleSheet(QString("QLabel { color : %1 }").arg(SingleColor().name()));
+    setStyleSheet(QString("QLabel { color : %1 }").arg(platformStyle->SingleColor().name()));
 }
 
 /** So that it responds to button clicks */