BlackBerry 10 specific widget style as a style plugin

- upstreaming the implementation of a BlackBerry 10 specific widget style
- modfied to be integrated as a style plugin being a part of the QtBase
- according docs are provided in QtDocs in another commit
- attributing the excellent work at KDAB who was the original developer

Change-Id: I57c548f6ec4cf02f125ee216f1ce1b764f29e8bb
Reviewed-by: Bernd Weimer <bweimer@blackberry.com>
Reviewed-by: Rafael Roquetto <rafael.roquetto@kdab.com>

1 files changed, 236 insertions, 0 deletions

diff --git a/src/plugins/styles/bb10style/qpixmapstyle.h b/src/plugins/styles/bb10style/qpixmapstyle.h
new file mode 100644
index 0000000000..d4a223aab8
--- /dev/null
+++ b/src/plugins/styles/bb10style/qpixmapstyle.h
@@ -0,0 +1,236 @@
+/***************************************************************************
+**
+** Copyright (C) 2014 BlackBerry Limited. All rights reserved.
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QPIXMAPSTYLE_H
+#define QPIXMAPSTYLE_H
+
+#include <QCommonStyle>
+#include <QString>
+#include <QPixmap>
+#include <QMargins>
+#include <QTileRules>
+#include <QHash>
+#include <QPainter>
+
+QT_BEGIN_NAMESPACE
+
+class QPixmapStyle : public QCommonStyle
+{
+    Q_OBJECT
+
+public:
+    struct Descriptor {
+        QString fileName;
+        QSize size;
+        QMargins margins;
+        QTileRules tileRules;
+    };
+
+    enum ControlDescriptor {
+        BG_Background=0,
+        LE_Enabled,             // QLineEdit
+        LE_Disabled,
+        LE_Focused,
+        PB_Enabled,             // QPushButton
+        PB_Pressed,
+        PB_PressedDisabled,
+        PB_Checked,
+        PB_Disabled,
+        TE_Enabled,             // QTextEdit
+        TE_Disabled,
+        TE_Focused,
+        PB_HBackground,         // Horizontal QProgressBar
+        PB_HContent,
+        PB_HComplete,
+        PB_VBackground,         // Vertical QProgressBar
+        PB_VContent,
+        PB_VComplete,
+        SG_HEnabled,            // Horizontal QSlider groove
+        SG_HDisabled,
+        SG_HActiveEnabled,
+        SG_HActivePressed,
+        SG_HActiveDisabled,
+        SG_VEnabled,            // Vertical QSlider groove
+        SG_VDisabled,
+        SG_VActiveEnabled,
+        SG_VActivePressed,
+        SG_VActiveDisabled,
+        DD_ButtonEnabled,       // QComboBox (DropDown)
+        DD_ButtonDisabled,
+        DD_ButtonPressed,
+        DD_PopupDown,
+        DD_PopupUp,
+        DD_ItemSelected,
+        ID_Selected,            // QStyledItemDelegate
+        SB_Horizontal,          // QScrollBar
+        SB_Vertical
+    };
+
+    struct Pixmap {
+        QPixmap pixmap;
+        QMargins margins;
+    };
+    enum ControlPixmap {
+        CB_Enabled,             // QCheckBox
+        CB_Checked,
+        CB_Pressed,
+        CB_PressedChecked,
+        CB_Disabled,
+        CB_DisabledChecked,
+        RB_Enabled,             // QRadioButton
+        RB_Checked,
+        RB_Pressed,
+        RB_Disabled,
+        RB_DisabledChecked,
+        SH_HEnabled,            // Horizontal QSlider handle
+        SH_HDisabled,
+        SH_HPressed,
+        SH_VEnabled,            // Vertical QSlider handle
+        SH_VDisabled,
+        SH_VPressed,
+        DD_ArrowEnabled,        // QComboBox (DropDown) arrow
+        DD_ArrowDisabled,
+        DD_ArrowPressed,
+        DD_ArrowOpen,
+        DD_ItemSeparator,
+        ID_Separator            // QStyledItemDelegate separator
+    };
+
+public:
+    QPixmapStyle();
+    ~QPixmapStyle();
+
+    void polish(QApplication *application);
+    void polish(QPalette &palette);
+    void polish(QWidget *widget);
+    void unpolish(QWidget *widget);
+
+    void drawPrimitive(PrimitiveElement element, const QStyleOption *option,
+            QPainter *painter, const QWidget *widget = 0) const;
+    void drawControl(ControlElement element, const QStyleOption *option,
+            QPainter *painter, const QWidget *widget = 0) const;
+    void drawComplexControl(ComplexControl cc, const QStyleOptionComplex *option,
+                            QPainter *painter, const QWidget *widget=0) const;
+
+    QSize sizeFromContents(ContentsType type, const QStyleOption *option,
+            const QSize &contentsSize, const QWidget *widget = 0) const;
+    QRect subElementRect(SubElement element, const QStyleOption *option,
+            const QWidget *widget = 0) const;
+    QRect subControlRect(ComplexControl cc, const QStyleOptionComplex *option,
+                         SubControl sc, const QWidget *widget = 0) const;
+
+    int pixelMetric(PixelMetric metric, const QStyleOption *option = 0,
+            const QWidget *widget = 0) const;
+    int styleHint(StyleHint hint, const QStyleOption *option,
+                  const QWidget *widget, QStyleHintReturn *returnData) const;
+    SubControl hitTestComplexControl(ComplexControl control, const QStyleOptionComplex *option,
+                                     const QPoint &pos, const QWidget *widget) const;
+
+    bool eventFilter(QObject *watched, QEvent *event);
+
+protected:
+    void addDescriptor(ControlDescriptor control, const QString &fileName,
+                       QMargins margins = QMargins(),
+                       QTileRules tileRules = QTileRules(Qt::RepeatTile, Qt::RepeatTile));
+    void copyDescriptor(ControlDescriptor source, ControlDescriptor dest);
+    void drawCachedPixmap(ControlDescriptor control, const QRect &rect, QPainter *p) const;
+
+    void addPixmap(ControlPixmap control, const QString &fileName,
+                   QMargins margins = QMargins());
+    void copyPixmap(ControlPixmap source, ControlPixmap dest);
+
+    void drawPushButton(const QStyleOption *option,
+                        QPainter *painter, const QWidget *widget) const;
+    void drawLineEdit(const QStyleOption *option,
+                      QPainter *painter, const QWidget *widget) const;
+    void drawTextEdit(const QStyleOption *option,
+                      QPainter *painter, const QWidget *widget) const;
+    void drawCheckBox(const QStyleOption *option,
+                      QPainter *painter, const QWidget *widget) const;
+    void drawRadioButton(const QStyleOption *option,
+                         QPainter *painter, const QWidget *widget) const;
+    void drawPanelItemViewItem(const QStyleOption *option,
+                               QPainter *painter, const QWidget *widget) const;
+    void drawProgressBarBackground(const QStyleOption *option,
+                                   QPainter *painter, const QWidget *widget) const;
+    void drawProgressBarLabel(const QStyleOption *option,
+                              QPainter *painter, const QWidget *widget) const;
+    void drawProgressBarFill(const QStyleOption *option,
+                             QPainter *painter, const QWidget *widget) const;
+    void drawSlider(const QStyleOptionComplex *option,
+                    QPainter *painter, const QWidget *widget) const;
+    void drawComboBox(const QStyleOptionComplex *option,
+                      QPainter *painter, const QWidget *widget) const;
+    void drawScrollBar(const QStyleOptionComplex *option,
+                       QPainter *painter, const QWidget *widget) const;
+
+    QSize pushButtonSizeFromContents(const QStyleOption *option,
+                                     const QSize &contentsSize, const QWidget *widget) const;
+    QSize lineEditSizeFromContents(const QStyleOption *option,
+                                   const QSize &contentsSize, const QWidget *widget) const;
+    QSize progressBarSizeFromContents(const QStyleOption *option,
+                                      const QSize &contentsSize, const QWidget *widget) const;
+    QSize sliderSizeFromContents(const QStyleOption *option,
+                                 const QSize &contentsSize, const QWidget *widget) const;
+    QSize comboBoxSizeFromContents(const QStyleOption *option,
+                                   const QSize &contentsSize, const QWidget *widget) const;
+    QSize itemViewSizeFromContents(const QStyleOption *option,
+                                   const QSize &contentsSize, const QWidget *widget) const;
+
+    QRect comboBoxSubControlRect(const QStyleOptionComplex *option,
+                                 SubControl sc, const QWidget *widget) const;
+    QRect scrollBarSubControlRect(const QStyleOptionComplex *option,
+                                  SubControl sc, const QWidget *widget) const;
+
+private:
+    QPixmap getCachedPixmap(ControlDescriptor control,
+                            const Descriptor &desc, const QSize &size) const;
+
+    QSize computeSize(const Descriptor &desc, int width, int height) const;
+
+private:
+    QHash<ControlDescriptor, Descriptor> m_descriptors;
+    QHash<ControlPixmap, Pixmap> m_pixmaps;
+};
+
+QT_END_NAMESPACE
+
+#endif // QPIXMAPSTYLE_H