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, 4 insertions, 1 deletions

diff --git a/src/qt/coincontroldialog.h b/src/qt/coincontroldialog.h
index 0566b02c96..8ff1eac709 100644
--- a/src/qt/coincontroldialog.h
+++ b/src/qt/coincontroldialog.h
@@ -16,6 +16,7 @@
 #include <QString>
 #include <QTreeWidgetItem>
 
+class PlatformStyle;
 class WalletModel;
 
 class CCoinControl;
@@ -32,7 +33,7 @@ class CoinControlDialog : public QDialog
     Q_OBJECT
 
 public:
-    explicit CoinControlDialog(QWidget *parent = 0);
+    explicit CoinControlDialog(const PlatformStyle *platformStyle, QWidget *parent = 0);
     ~CoinControlDialog();
 
     void setModel(WalletModel *model);
@@ -57,6 +58,8 @@ private:
     QAction *lockAction;
     QAction *unlockAction;
 
+    const PlatformStyle *platformStyle;
+
     QString strPad(QString, int, QString);
     void sortView(int, Qt::SortOrder);
     void updateView();