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, 3 insertions, 1 deletions

diff --git a/src/qt/sendcoinsdialog.h b/src/qt/sendcoinsdialog.h
index c833da84b2..391905ffcd 100644
--- a/src/qt/sendcoinsdialog.h
+++ b/src/qt/sendcoinsdialog.h
@@ -12,6 +12,7 @@
 
 class ClientModel;
 class OptionsModel;
+class PlatformStyle;
 class SendCoinsEntry;
 class SendCoinsRecipient;
 
@@ -31,7 +32,7 @@ class SendCoinsDialog : public QDialog
     Q_OBJECT
 
 public:
-    explicit SendCoinsDialog(QWidget *parent = 0);
+    explicit SendCoinsDialog(const PlatformStyle *platformStyle, QWidget *parent = 0);
     ~SendCoinsDialog();
 
     void setClientModel(ClientModel *clientModel);
@@ -60,6 +61,7 @@ private:
     WalletModel *model;
     bool fNewRecipientAllowed;
     bool fFeeMinimized;
+    const PlatformStyle *platformStyle;
 
     // Process WalletModel::SendCoinsReturn and generate a pair consisting
     // of a message and message flags for use in Q_EMIT message().