RadioButtons/Checkboxes should have theme highlight

Currently only keypad navigation focus is drawn to RadioButtons and
CheckBoxes in non-touch devices. However, in S60 the native widgets
have themed highlight (similar to lists). This task will add that
highlight support for these widgets regardless if keypad navigation
is active or not.

Task-number: QTBUG-5536
Reviewed-by: Alessandro Portale
(cherry picked from commit ce64d3c7e0b93fa6792513f804b42d31acccc68e)

1 files changed, 65 insertions, 0 deletions

diff --git a/src/gui/styles/qs60style.cpp b/src/gui/styles/qs60style.cpp
index aaa0d28..bba9ed7 100644
--- a/src/gui/styles/qs60style.cpp
+++ b/src/gui/styles/qs60style.cpp
@@ -68,6 +68,8 @@
 #include "qtoolbutton.h"
 #include "qfocusframe.h"
 #include "qformlayout.h"
+#include "qradiobutton.h"
+#include "qcheckbox.h"
 #include "qprogressbar.h"
 
 #include "private/qtoolbarextension_p.h"
@@ -780,6 +782,11 @@ void QS60StylePrivate::setThemePaletteHash(QPalette *palette) const
     QApplication::setPalette(widgetPalette, "QComboBox");
     widgetPalette = *palette;
 
+    widgetPalette.setColor(QPalette::WindowText, s60Color(QS60StyleEnums::CL_QsnTextColors, 7, 0));
+    QApplication::setPalette(widgetPalette, "QRadioButton");
+    QApplication::setPalette(widgetPalette, "QCheckBox");
+    widgetPalette = *palette;
+
     widgetPalette.setColor(QPalette::WindowText, mainAreaTextColor);
     widgetPalette.setColor(QPalette::Button, QApplication::palette().color(QPalette::Button));
     widgetPalette.setColor(QPalette::Dark, mainAreaTextColor.darker());
@@ -1214,6 +1221,31 @@ void QS60Style::drawControl(ControlElement element, const QStyleOption *option,
     Q_D(const QS60Style);
     const QS60StylePrivate::SkinElementFlags flags = (option->state & State_Enabled) ?  QS60StylePrivate::SF_StateEnabled : QS60StylePrivate::SF_StateDisabled;
     switch (element) {
+        case CE_CheckBox:
+        case CE_RadioButton:
+            if (const QStyleOptionButton *btn = qstyleoption_cast<const QStyleOptionButton *>(option)) {
+                bool isRadio = (element == CE_RadioButton);
+                // Highlight needs to be drawn first, as it goes "underneath" the text and indicator.
+                if (btn->state & State_HasFocus) {
+                    QStyleOptionFocusRect fropt;
+                    fropt.QStyleOption::operator=(*btn);
+                    fropt.rect = subElementRect(isRadio ? SE_RadioButtonFocusRect
+                                                        : SE_CheckBoxFocusRect, btn, widget);
+                    drawPrimitive(PE_FrameFocusRect, &fropt, painter, widget);
+                }
+                QStyleOptionButton subopt = *btn;
+
+                subopt.rect = subElementRect(isRadio ? SE_RadioButtonIndicator
+                                                     : SE_CheckBoxIndicator, btn, widget);
+                drawPrimitive(isRadio ? PE_IndicatorRadioButton : PE_IndicatorCheckBox,
+                              &subopt, painter, widget);
+                subopt.rect = subElementRect(isRadio ? SE_RadioButtonContents
+                                                     : SE_CheckBoxContents, btn, widget);
+
+                drawControl(isRadio ? CE_RadioButtonLabel : CE_CheckBoxLabel, &subopt, painter, widget);
+            }
+            break;
+
     case CE_PushButton:
         if (const QStyleOptionButton *btn = qstyleoption_cast<const QStyleOptionButton *>(option)) {
 
@@ -1957,6 +1989,17 @@ void QS60Style::drawPrimitive(PrimitiveElement element, const QStyleOption *opti
     bool commonStyleDraws = false;
 
     switch (element) {
+        case PE_FrameFocusRect: {
+            //Draw themed highlight to radiobuttons and checkboxes.
+            //For other widgets skip, unless palette has been modified. In that case, draw with commonstyle.
+            if (option->palette.highlight().color() == QS60StylePrivate::themePalette()->highlight().color())
+                if ((qstyleoption_cast<const QStyleOptionFocusRect *>(option) &&
+                    (qobject_cast<const QRadioButton *>(widget) || qobject_cast<const QCheckBox *>(widget))))
+                        QS60StylePrivate::drawSkinElement(QS60StylePrivate::SE_ListHighlight, painter, option->rect, flags);
+            else
+                commonStyleDraws = true;
+            }
+        break;
 #ifndef QT_NO_LINEEDIT
     case PE_PanelLineEdit:
         if (const QStyleOptionFrame *lineEdit = qstyleoption_cast<const QStyleOptionFrame *>(option)) {
@@ -2647,6 +2690,9 @@ QRect QS60Style::subElementRect(SubElement element, const QStyleOption *opt, con
 {
     QRect ret;
     switch (element) {
+        case SE_RadioButtonFocusRect:
+            ret = opt->rect;
+            break;
         case SE_LineEditContents: {
                 // in S60 the input text box doesn't start from line Edit's TL, but
                 // a bit indented.
@@ -2797,6 +2843,25 @@ QRect QS60Style::subElementRect(SubElement element, const QStyleOption *opt, con
                 }
             ret = visualRect(opt->direction, opt->rect, ret);
             break;
+        case SE_RadioButtonIndicator: {
+                const int height = pixelMetric(PM_ExclusiveIndicatorHeight, opt, widget);
+                ret.setRect(opt->rect.x(), opt->rect.y() + ((opt->rect.height() - height) >> 1),
+                        pixelMetric(PM_ExclusiveIndicatorWidth, opt, widget), height);
+                ret.translate(2, 0); //move indicator slightly to avoid highlight crossing over it
+                ret = visualRect(opt->direction, opt->rect, ret);
+            }
+            break;
+        case SE_CheckBoxIndicator: {
+                const int height = pixelMetric(PM_IndicatorHeight, opt, widget);
+                ret.setRect(opt->rect.x(), opt->rect.y() + ((opt->rect.height() - height) >> 1),
+                          pixelMetric(PM_IndicatorWidth, opt, widget), height);
+                ret.translate(2, 0); //move indicator slightly to avoid highlight crossing over it
+                ret = visualRect(opt->direction, opt->rect, ret);
+            }
+            break;
+        case SE_CheckBoxFocusRect:
+            ret = opt->rect;
+            break;
         default:
             ret = QCommonStyle::subElementRect(element, opt, widget);
     }