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, 55 insertions, 0 deletions

diff --git a/src/qt/platformstyle.h b/src/qt/platformstyle.h
new file mode 100644
index 0000000000..4e763e760e
--- /dev/null
+++ b/src/qt/platformstyle.h
@@ -0,0 +1,55 @@
+// Copyright (c) 2015 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#ifndef BITCOIN_QT_PLATFORMSTYLE_H
+#define BITCOIN_QT_PLATFORMSTYLE_H
+
+#include <QIcon>
+#include <QPixmap>
+#include <QString>
+
+/* Coin network-specific GUI style information */
+class PlatformStyle
+{
+public:
+    /** Get style associated with provided platform name, or 0 if not known */
+    static const PlatformStyle *instantiate(const QString &platformId);
+
+    const QString &getName() const { return name; }
+
+    bool getImagesOnButtons() const { return imagesOnButtons; }
+    bool getUseExtraSpacing() const { return useExtraSpacing; }
+
+    QColor TextColor() const { return textColor; }
+    QColor SingleColor() const { return singleColor; }
+
+    /** Colorize an image (given filename) with the icon color */
+    QImage SingleColorImage(const QString& filename) const;
+
+    /** Colorize an icon (given filename) with the icon color */
+    QIcon SingleColorIcon(const QString& filename) const;
+
+    /** Colorize an icon (given object) with the icon color */
+    QIcon SingleColorIcon(const QIcon& icon) const;
+
+    /** Colorize an icon (given filename) with the text color */
+    QIcon TextColorIcon(const QString& filename) const;
+
+    /** Colorize an icon (given object) with the text color */
+    QIcon TextColorIcon(const QIcon& icon) const;
+
+private:
+    PlatformStyle(const QString &name, bool imagesOnButtons, bool colorizeIcons, bool useExtraSpacing);
+
+    QString name;
+    bool imagesOnButtons;
+    bool colorizeIcons;
+    bool useExtraSpacing;
+    QColor singleColor;
+    QColor textColor;
+    /* ... more to come later */
+};
+
+#endif // BITCOIN_QT_PLATFORMSTYLE_H
+