Make Qt pref dialog shrinkable

ChangeLog

@@ -13,6 +13,7 @@
     and values 0 to 10. In the UI, ratings are show as 5 stars.
  9. If we fail to download a cover, don't keep trying next time song is played.
 10. Simplify toolbar cover widget, no border.
+11. Allow Qt preference dialog to shrink smaller.
 
 1.4.1
 -----

gui/preferencesdialog.cpp

@@ -69,6 +69,7 @@ PreferencesDialog::PreferencesDialog(QWidget *parent)
     setButtons(Ok|Apply|Cancel);
 
     pageWidget = new PageWidget(this);
+    setMainWidget(pageWidget);
     server = new ServerSettings(0);
     playback = new PlaybackSettings(0);
     files = new FileSettings(0);
@@ -129,11 +130,7 @@ PreferencesDialog::PreferencesDialog(QWidget *parent)
     #endif
     pageWidget->addPage(cache, i18n("Cache"), Icons::self()->folderIcon, i18n("Cached Items"));
     setCaption(i18n("Configure"));
-    setMainWidget(pageWidget);
     setAttribute(Qt::WA_DeleteOnClose);
-    int h=sizeHint().height();
-    setMinimumHeight(h);
-    setMinimumWidth(h*1.1);
     setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum);
 }
 

support/dialog.cpp

@@ -37,7 +37,7 @@ Dialog::Dialog(QWidget *parent, const QString &name, const QSize &defSize)
     , buttonTypes(0)
     , mw(0)
     , buttonBox(0)
-    , managedAccels(false)
+    , shown(false)
     #endif
 {
     if (!name.isEmpty()) {
@@ -345,12 +345,19 @@ QAbstractButton *Dialog::getButton(ButtonCode button)
 
 void Dialog::showEvent(QShowEvent *e)
 {
-    if (!managedAccels) {
+    if (!shown) {
+        shown=true;
         AcceleratorManager::manage(this);
-        managedAccels=true;
-    }
-    if (defButton) {
-        setDefaultButton((ButtonCode)defButton);
+        if (defButton) {
+            setDefaultButton((ButtonCode)defButton);
+        }
+        if (buttonBox && mw) {
+            QSize mwSize=mw->minimumSize();
+            if (mwSize.width()>0 && mwSize.height()>0) {
+                setMinimumHeight(qMax(minimumHeight(), buttonBox->height()+layout()->spacing()+mwSize.height()+(2*layout()->margin())));
+                setMinimumWidth(qMax(minimumWidth(), mwSize.width()+(2*layout()->margin())));
+            }
+        }
     }
     QDialog::showEvent(e);
 }

support/dialog.h

@@ -168,7 +168,7 @@ private:
     QDialogButtonBox *buttonBox;
     QMap<ButtonCode, QAbstractButton *> userButtons;
     QSize cfgSize;
-    bool managedAccels;
+    bool shown;
 };
 
 Q_DECLARE_OPERATORS_FOR_FLAGS(Dialog::ButtonCodes)

support/pagewidget.cpp

@@ -24,6 +24,7 @@
 #include "pagewidget.h"
 #include "icon.h"
 #include "gtkstyle.h"
+#include "dialog.h"
 #include <QListWidget>
 #include <QStackedWidget>
 #include <QBoxLayout>
@@ -247,7 +248,6 @@ PageWidgetItem::PageWidgetItem(QWidget *p, const QString &header, const Icon &ic
     layout->addWidget(cfg);
     layout->setMargin(0);
     cfg->setParent(this);
-    cfg->adjustSize();
     adjustSize();
 }
 
@@ -283,15 +283,12 @@ PageWidgetItem * PageWidget::addPage(QWidget *widget, const QString &name, const
 
     int rows = list->model()->rowCount();
     int width = 0;
-    int height = 0;
     for (int i = 0; i < rows; ++i) {
         QSize rowSize=list->sizeHintForIndex(list->model()->index(i, 0));
         width = qMax(width, rowSize.width());
-        height += rowSize.height();
     }
     width+=25;
     list->setFixedWidth(width);
-    list->setMinimumHeight(height);
 
     QSize stackSize = stack->size();
     for (int i = 0; i < stack->count(); ++i) {
@@ -300,12 +297,9 @@ PageWidgetItem * PageWidget::addPage(QWidget *widget, const QString &name, const
             stackSize = stackSize.expandedTo(widget->minimumSizeHint());
         }
     }
-    stack->setMinimumSize(stackSize);
+    setMinimumHeight(qMax(minimumHeight(), stackSize.height()));
+    setMinimumWidth(qMax(minimumWidth(), stackSize.width()+width+layout()->spacing()));
 
-    QSize sz=size();
-    sz=sz.expandedTo(stackSize);
-    sz=sz.expandedTo(QSize(width, height));
-    setMinimumSize(sz);
     list->setCurrentRow(0);
     stack->setCurrentIndex(0);
     pages.insert(listItem, page);