Provide a common iconsize-widget for the settings dialog of the icons-, details- and column-view. The current version still requires some improvements (Labels on the left + right, preview, ...).

svn path=/trunk/KDE/kdebase/apps/; revision=852961

src/CMakeLists.txt

@@ -18,6 +18,8 @@ endif (Nepomuk_FOUND)
 ########### next target ###############
 
 set(dolphinprivate_LIB_SRCS
+    additionalinfodialog.cpp
+    applyviewpropsjob.cpp
     dolphincontroller.cpp
     dolphindetailsview.cpp
     dolphiniconsview.cpp
@@ -44,8 +46,7 @@ set(dolphinprivate_LIB_SRCS
     viewproperties.cpp
     viewpropertiesdialog.cpp
     viewpropsprogressinfo.cpp
-    additionalinfodialog.cpp
+    zoomlevelinfo.cpp
-    applyviewpropsjob.cpp
     )
 
 kde4_add_kcfg_files(dolphinprivate_LIB_SRCS
@@ -107,7 +108,7 @@ set(dolphin_SRCS
     filterbar.cpp
     generalsettingspage.cpp
     generalviewsettingspage.cpp
-    iconsizedialog.cpp
+    iconsizegroupbox.cpp
     iconsviewsettingspage.cpp
     infosidebarpage.cpp
     ktreeview.cpp
@@ -125,6 +126,7 @@ set(dolphin_SRCS
     sidebartreeview.cpp
     viewsettingspage.cpp
     viewsettingspagebase.cpp
+    zoomlevelinfo.cpp
     )
 
 kde4_add_kcfg_files(dolphin_SRCS
@@ -175,11 +177,12 @@ set(kcm_dolphin_PART_SRCS
     dolphinfontrequester.cpp
 #    dolphinsettings.cpp
     generalviewsettingspage.cpp
-    iconsizedialog.cpp
+    iconsizegroupbox.cpp
     iconsviewsettingspage.cpp
     pixmapviewer.cpp
     viewsettingspagebase.cpp
 #    viewproperties.cpp
+    zoomlevelinfo.cpp
 )
 
 kde4_add_kcfg_files(kcm_dolphin_PART_SRCS

src/columnviewsettingspage.cpp

@@ -22,6 +22,8 @@
 #include "dolphinfontrequester.h"
 #include "dolphinsettings.h"
 #include "dolphin_columnmodesettings.h"
+#include "iconsizegroupbox.h"
+#include "zoomlevelinfo.h"
 
 #include <kdialog.h>
 #include <klocale.h>
@@ -37,9 +39,7 @@
 
 ColumnViewSettingsPage::ColumnViewSettingsPage(QWidget* parent) :
     ViewSettingsPageBase(parent),
-    m_smallIconSize(0),
+    m_iconSizeGroupBox(0),
-    m_mediumIconSize(0),
-    m_largeIconSize(0),
     m_fontRequester(0),
     m_columnWidthSlider(0)
 {
@@ -49,6 +49,32 @@ ColumnViewSettingsPage::ColumnViewSettingsPage(QWidget* parent) :
 
     setSpacing(spacing);
     setMargin(margin);
+    
+    // Create "Icon" properties
+    m_iconSizeGroupBox = new IconSizeGroupBox(this);
+    m_iconSizeGroupBox->setSizePolicy(sizePolicy);
+    
+    const int min = ZoomLevelInfo::minimumLevel();
+    const int max = ZoomLevelInfo::maximumLevel();
+    m_iconSizeGroupBox->setDefaultSizeRange(min, max);
+    m_iconSizeGroupBox->setPreviewSizeRange(min, max);
+    
+    connect(m_iconSizeGroupBox, SIGNAL(defaultSizeChanged(int)),
+            this, SIGNAL(changed()));
+    connect(m_iconSizeGroupBox, SIGNAL(previewSizeChanged(int)),
+            this, SIGNAL(changed()));
+
+    // create "Text" properties
+    QGroupBox* textBox = new QGroupBox(i18nc("@title:group", "Text"), this);
+    textBox->setSizePolicy(sizePolicy);
+
+    QLabel* fontLabel = new QLabel(i18nc("@label:listbox", "Font:"), textBox);
+    m_fontRequester = new DolphinFontRequester(textBox);
+    connect(m_fontRequester, SIGNAL(changed()), this, SIGNAL(changed()));
+
+    QHBoxLayout* textLayout = new QHBoxLayout(textBox);
+    textLayout->addWidget(fontLabel);
+    textLayout->addWidget(m_fontRequester);
 
     // create "Column Width" properties
     QGroupBox* columnWidthBox = new QGroupBox(i18nc("@title:group", "Column Width"), this);
@@ -68,39 +94,6 @@ ColumnViewSettingsPage::ColumnViewSettingsPage(QWidget* parent) :
     columnWidthLayout->addWidget(m_columnWidthSlider);
     columnWidthLayout->addWidget(largeLabel);
 
-    // Create 'Icon' properties
-    QGroupBox* iconSizeBox = new QGroupBox(i18nc("@title:group", "Icon Size"), this);
-    iconSizeBox->setSizePolicy(sizePolicy);
-
-    m_smallIconSize  = new QRadioButton(i18nc("@option:radio Icon Size", "Small"), this);
-    m_mediumIconSize = new QRadioButton(i18nc("@option:radio Icon Size", "Medium"), this);
-    m_largeIconSize  = new QRadioButton(i18nc("@option:radio Icon Size", "Large"), this);
-    connect(m_smallIconSize,  SIGNAL(toggled(bool)), this, SIGNAL(changed()));
-    connect(m_mediumIconSize, SIGNAL(toggled(bool)), this, SIGNAL(changed()));
-    connect(m_largeIconSize,  SIGNAL(toggled(bool)), this, SIGNAL(changed()));
-
-    QButtonGroup* iconSizeGroup = new QButtonGroup(this);
-    iconSizeGroup->addButton(m_smallIconSize);
-    iconSizeGroup->addButton(m_mediumIconSize);
-    iconSizeGroup->addButton(m_largeIconSize);
-
-    QHBoxLayout* iconSizeLayout = new QHBoxLayout(iconSizeBox);
-    iconSizeLayout->addWidget(m_smallIconSize);
-    iconSizeLayout->addWidget(m_mediumIconSize);
-    iconSizeLayout->addWidget(m_largeIconSize);
-
-    // create "Text" properties
-    QGroupBox* textBox = new QGroupBox(i18nc("@title:group", "Text"), this);
-    textBox->setSizePolicy(sizePolicy);
-
-    QLabel* fontLabel = new QLabel(i18nc("@label:listbox", "Font:"), textBox);
-    m_fontRequester = new DolphinFontRequester(textBox);
-    connect(m_fontRequester, SIGNAL(changed()), this, SIGNAL(changed()));
-
-    QHBoxLayout* textLayout = new QHBoxLayout(textBox);
-    textLayout->addWidget(fontLabel);
-    textLayout->addWidget(m_fontRequester);
-
     // Add a dummy widget with no restriction regarding
     // a vertical resizing. This assures that the dialog layout
     // is not stretched vertically.
@@ -117,13 +110,10 @@ void ColumnViewSettingsPage::applySettings()
 {
     ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 
-    int iconSize = KIconLoader::SizeSmall;
+    const int iconSize = ZoomLevelInfo::iconSizeForZoomLevel(m_iconSizeGroupBox->defaultSizeValue());
-    if (m_mediumIconSize->isChecked()) {
+    const int previewSize = ZoomLevelInfo::iconSizeForZoomLevel(m_iconSizeGroupBox->previewSizeValue());
-        iconSize = KIconLoader::SizeMedium;
-    } else if (m_largeIconSize->isChecked()) {
-        iconSize = KIconLoader::SizeLarge;
-    }
     settings->setIconSize(iconSize);
+    settings->setPreviewSize(previewSize);
 
     const QFont font = m_fontRequester->font();
     settings->setUseSystemFont(m_fontRequester->mode() == DolphinFontRequester::SystemFont);
@@ -147,19 +137,13 @@ void ColumnViewSettingsPage::loadSettings()
 {
     ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
 
-    switch (settings->iconSize()) {
+    const QSize iconSize(settings->iconSize(), settings->iconSize());
-    case KIconLoader::SizeLarge:
+    const int iconSizeValue = ZoomLevelInfo::zoomLevelForIconSize(iconSize);
-        m_largeIconSize->setChecked(true);
+    m_iconSizeGroupBox->setDefaultSizeValue(iconSizeValue);
-        break;
+    
-
+    const QSize previewSize(settings->previewSize(), settings->previewSize());
-    case KIconLoader::SizeMedium:
+    const int previewSizeValue = ZoomLevelInfo::zoomLevelForIconSize(previewSize);
-        m_mediumIconSize->setChecked(true);
+    m_iconSizeGroupBox->setPreviewSizeValue(previewSizeValue);
-        break;
-
-    case KIconLoader::SizeSmall:
-    default:
-        m_smallIconSize->setChecked(true);
-    }
 
     if (settings->useSystemFont()) {
         m_fontRequester->setMode(DolphinFontRequester::SystemFont);

src/columnviewsettingspage.h

@@ -24,8 +24,8 @@
 
 class DolphinMainWindow;
 class DolphinFontRequester;
+class IconSizeGroupBox;
 class QSlider;
-class QRadioButton;
 
 /**
  * @brief Represents the page from the Dolphin Settings which allows
@@ -53,9 +53,7 @@ private:
     void loadSettings();
 
 private:
-    QRadioButton* m_smallIconSize;
+    IconSizeGroupBox* m_iconSizeGroupBox;
-    QRadioButton* m_mediumIconSize;
-    QRadioButton* m_largeIconSize;
     DolphinFontRequester* m_fontRequester;
     QSlider* m_columnWidthSlider;
 };

src/detailsviewsettingspage.cpp

@@ -19,8 +19,10 @@
 
 #include "detailsviewsettingspage.h"
 
+#include "iconsizegroupbox.h"
 #include "dolphinsettings.h"
 #include "dolphin_detailsmodesettings.h"
+#include "zoomlevelinfo.h"
 
 #include <kdialog.h>
 #include <dolphinfontrequester.h>
@@ -37,9 +39,7 @@
 
 DetailsViewSettingsPage::DetailsViewSettingsPage(QWidget* parent) :
     ViewSettingsPageBase(parent),
-    m_smallIconSize(0),
+    m_iconSizeGroupBox(0),
-    m_mediumIconSize(0),
-    m_largeIconSize(0),
     m_fontRequester(0),
     m_expandableFolders(0)
 {
@@ -51,25 +51,18 @@ DetailsViewSettingsPage::DetailsViewSettingsPage(QWidget* parent) :
     setMargin(margin);
 
     // Create "Icon" properties
-    QGroupBox* iconSizeBox = new QGroupBox(i18nc("@title:group", "Icon Size"), this);
+    m_iconSizeGroupBox = new IconSizeGroupBox(this);
-    iconSizeBox->setSizePolicy(sizePolicy);
+    m_iconSizeGroupBox->setSizePolicy(sizePolicy);
-
+    
-    m_smallIconSize  = new QRadioButton(i18nc("@option:radio Icon Size", "Small"), this);
+    const int min = ZoomLevelInfo::minimumLevel();
-    m_mediumIconSize = new QRadioButton(i18nc("@option:radio Icon Size", "Medium"), this);
+    const int max = ZoomLevelInfo::maximumLevel();
-    m_largeIconSize  = new QRadioButton(i18nc("@option:radio Icon Size", "Large"), this);
+    m_iconSizeGroupBox->setDefaultSizeRange(min, max);
-    connect(m_smallIconSize,  SIGNAL(toggled(bool)), this, SIGNAL(changed()));
+    m_iconSizeGroupBox->setPreviewSizeRange(min, max);
-    connect(m_mediumIconSize, SIGNAL(toggled(bool)), this, SIGNAL(changed()));
+    
-    connect(m_largeIconSize,  SIGNAL(toggled(bool)), this, SIGNAL(changed()));
+    connect(m_iconSizeGroupBox, SIGNAL(defaultSizeChanged(int)),
-
+            this, SIGNAL(changed()));
-    QButtonGroup* iconSizeGroup = new QButtonGroup(this);
+    connect(m_iconSizeGroupBox, SIGNAL(previewSizeChanged(int)),
-    iconSizeGroup->addButton(m_smallIconSize);
+            this, SIGNAL(changed()));
-    iconSizeGroup->addButton(m_mediumIconSize);
-    iconSizeGroup->addButton(m_largeIconSize);
-
-    QHBoxLayout* iconSizeLayout = new QHBoxLayout(iconSizeBox);
-    iconSizeLayout->addWidget(m_smallIconSize);
-    iconSizeLayout->addWidget(m_mediumIconSize);
-    iconSizeLayout->addWidget(m_largeIconSize);
 
     // create "Text" properties
     QGroupBox* textBox = new QGroupBox(i18nc("@title:group", "Text"), this);
@@ -103,13 +96,10 @@ void DetailsViewSettingsPage::applySettings()
 {
     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 
-    int iconSize = KIconLoader::SizeSmall;
+    const int iconSize = ZoomLevelInfo::iconSizeForZoomLevel(m_iconSizeGroupBox->defaultSizeValue());
-    if (m_mediumIconSize->isChecked()) {
+    const int previewSize = ZoomLevelInfo::iconSizeForZoomLevel(m_iconSizeGroupBox->previewSizeValue());
-        iconSize = KIconLoader::SizeMedium;
-    } else if (m_largeIconSize->isChecked()) {
-        iconSize = KIconLoader::SizeLarge;
-    }
     settings->setIconSize(iconSize);
+    settings->setPreviewSize(previewSize);
 
     const QFont font = m_fontRequester->font();
     settings->setUseSystemFont(m_fontRequester->mode() == DolphinFontRequester::SystemFont);
@@ -132,20 +122,14 @@ void DetailsViewSettingsPage::loadSettings()
 {
     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
 
-    switch (settings->iconSize()) {
+    const QSize iconSize(settings->iconSize(), settings->iconSize());
-    case KIconLoader::SizeLarge:
+    const int iconSizeValue = ZoomLevelInfo::zoomLevelForIconSize(iconSize);
-        m_largeIconSize->setChecked(true);
+    m_iconSizeGroupBox->setDefaultSizeValue(iconSizeValue);
-        break;
+    
-
+    const QSize previewSize(settings->previewSize(), settings->previewSize());
-    case KIconLoader::SizeMedium:
+    const int previewSizeValue = ZoomLevelInfo::zoomLevelForIconSize(previewSize);
-        m_mediumIconSize->setChecked(true);
+    m_iconSizeGroupBox->setPreviewSizeValue(previewSizeValue);
-        break;
+    
-
-    case KIconLoader::SizeSmall:
-    default:
-        m_smallIconSize->setChecked(true);
-    }
-
     if (settings->useSystemFont()) {
         m_fontRequester->setMode(DolphinFontRequester::SystemFont);
     } else {

src/detailsviewsettingspage.h

@@ -23,8 +23,8 @@
 #include <viewsettingspagebase.h>
 
 class DolphinFontRequester;
+class IconSizeGroupBox;
 class QCheckBox;
-class QRadioButton;
 
 /**
  * @brief Represents the page from the Dolphin Settings which allows
@@ -52,9 +52,7 @@ private:
     void loadSettings();
 
 private:
-    QRadioButton* m_smallIconSize;
+    IconSizeGroupBox* m_iconSizeGroupBox;
-    QRadioButton* m_mediumIconSize;
-    QRadioButton* m_largeIconSize;
     DolphinFontRequester* m_fontRequester;
     QCheckBox* m_expandableFolders;
 };

src/dolphincolumnview.cpp

@@ -22,6 +22,7 @@
 #include "dolphincolumnwidget.h"
 #include "dolphincontroller.h"
 #include "dolphinsettings.h"
+#include "zoomlevelinfo.h"
 
 #include "dolphin_columnmodesettings.h"
 
@@ -368,7 +369,7 @@ void DolphinColumnView::wheelEvent(QWheelEvent* event)
 
 void DolphinColumnView::setZoomLevel(int level)
 {
-    const int size = DolphinController::iconSizeForZoomLevel(level);
+    const int size = ZoomLevelInfo::iconSizeForZoomLevel(level);
     ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
     
     const bool showPreview = m_controller->dolphinView()->showPreview();

src/dolphincontroller.cpp

@@ -18,6 +18,7 @@
  ***************************************************************************/
 
 #include "dolphincontroller.h"
+#include "zoomlevelinfo.h"
 
 #include <kdirmodel.h>
 #include <QAbstractProxyModel>
@@ -57,7 +58,7 @@ void DolphinController::setItemView(QAbstractItemView* view)
     m_itemView = view;
 
     if (m_itemView != 0) {
-        m_zoomLevel = zoomLevelForIconSize(m_itemView->iconSize());
+        m_zoomLevel = ZoomLevelInfo::zoomLevelForIconSize(m_itemView->iconSize());
         
         // TODO: this is a workaround until  Qt-issue 176832 has been fixed
         connect(m_itemView, SIGNAL(pressed(const QModelIndex&)),
@@ -113,48 +114,14 @@ void DolphinController::indicateActivationChange(bool active)
 
 void DolphinController::setZoomLevel(int level)
 {
-    Q_ASSERT(level >= zoomLevelMinimum());
+    Q_ASSERT(level >= ZoomLevelInfo::minimumLevel());
-    Q_ASSERT(level <= zoomLevelMaximum());
+    Q_ASSERT(level <= ZoomLevelInfo::maximumLevel());
     if (level != m_zoomLevel) {
         m_zoomLevel = level;
         emit zoomLevelChanged(m_zoomLevel);
     }
 }
 
-int DolphinController::iconSizeForZoomLevel(int level)
-{
-    int size = KIconLoader::SizeMedium;
-    switch (level) {
-    case 0: size = KIconLoader::SizeSmall; break; 
-    case 1: size = KIconLoader::SizeSmallMedium; break;
-    case 2: size = KIconLoader::SizeMedium; break;
-    case 3: size = KIconLoader::SizeLarge; break;
-    case 4: size = KIconLoader::SizeHuge; break;
-    case 5: size = KIconLoader::SizeEnormous; break;
-    case 6: size = KIconLoader::SizeEnormous * 3 / 2; break;
-    case 7: size = KIconLoader::SizeEnormous * 2; break;
-    default: Q_ASSERT(false); break;
-    }
-    return size;
-}
-
-int DolphinController::zoomLevelForIconSize(const QSize& size)
-{
-    int level = 0;
-    switch (size.height()) {
-    case KIconLoader::SizeSmall:            level = 0; break;
-    case KIconLoader::SizeSmallMedium:      level = 1; break;
-    case KIconLoader::SizeMedium:           level = 2; break;
-    case KIconLoader::SizeLarge:            level = 3; break;
-    case KIconLoader::SizeHuge:             level = 4; break;
-    case KIconLoader::SizeEnormous:         level = 5; break;
-    case KIconLoader::SizeEnormous * 3 / 2: level = 6; break;
-    case KIconLoader::SizeEnormous * 2:     level = 7; break;
-    default: Q_ASSERT(false);               level = 3; break;
-    }
-    return level;
-}
-
 void DolphinController::handleKeyPressEvent(QKeyEvent* event)
 {
     Q_ASSERT(m_itemView != 0);

src/dolphincontroller.h

@@ -185,23 +185,6 @@ public:
     void setZoomLevel(int level);
     int zoomLevel() const;
     
-    int zoomLevelMinimum() const;
-    int zoomLevelMaximum() const;
-    
-    /**
-     * Helper method for the view implementation to get
-     * the icon size for the zoom level \a level
-     * (see DolphinController::zoomLevel()).
-     */
-    static int iconSizeForZoomLevel(int level);
-    
-    /**
-     * Helper method for the view implementation to get
-     * the zoom level for the icon size \a size
-     * (see DolphinController::zoomLevel()).
-     */
-    static int zoomLevelForIconSize(const QSize& size);
-
     /**
      * Tells the view implementation to zoom out by emitting the signal zoomOut()
      * and is invoked by the abstract Dolphin view.
@@ -383,14 +366,4 @@ inline int DolphinController::zoomLevel() const
     return m_zoomLevel;
 }
 
-inline int DolphinController::zoomLevelMinimum() const
-{
-    return 0;
-}
-
-inline int DolphinController::zoomLevelMaximum() const
-{
-    return 7;
-}
-
 #endif

src/dolphindetailsview.cpp

@@ -27,6 +27,7 @@
 #include "draganddrophelper.h"
 #include "selectionmanager.h"
 #include "viewproperties.h"
+#include "zoomlevelinfo.h"
 
 #include "dolphin_detailsmodesettings.h"
 #include "dolphin_generalsettings.h"
@@ -496,7 +497,7 @@ QRect DolphinDetailsView::elasticBandRect() const
 
 void DolphinDetailsView::setZoomLevel(int level)
 {
-    const int size = DolphinController::iconSizeForZoomLevel(level);
+    const int size = ZoomLevelInfo::iconSizeForZoomLevel(level);
     DetailsModeSettings* settings = DolphinSettings::instance().detailsModeSettings();
     
     const bool showPreview = m_controller->dolphinView()->showPreview();

src/dolphiniconsview.cpp

@@ -26,6 +26,7 @@
 #include "dolphin_generalsettings.h"
 #include "draganddrophelper.h"
 #include "selectionmanager.h"
+#include "zoomlevelinfo.h"
 
 #include <kcategorizedsortfilterproxymodel.h>
 #include <kdialog.h>
@@ -339,10 +340,10 @@ void DolphinIconsView::setZoomLevel(int level)
 
     const bool showPreview = m_controller->dolphinView()->showPreview();
     if (showPreview) {
-        const int previewSize = DolphinController::iconSizeForZoomLevel(level);
+        const int previewSize = ZoomLevelInfo::iconSizeForZoomLevel(level);
         settings->setPreviewSize(previewSize);
     } else {
-        newIconSize = DolphinController::iconSizeForZoomLevel(level);
+        newIconSize = ZoomLevelInfo::iconSizeForZoomLevel(level);
         settings->setIconSize(newIconSize);
     }
 

src/dolphinview.cpp

@@ -62,6 +62,7 @@
 #include "renamedialog.h"
 #include "tooltipmanager.h"
 #include "viewproperties.h"
+#include "zoomlevelinfo.h"
 
 DolphinView::DolphinView(QWidget* parent,
                          const KUrl& url,
@@ -364,10 +365,10 @@ QPoint DolphinView::contentsPosition() const
 
 void DolphinView::setZoomLevel(int level)
 {
-    if (level < zoomLevelMinimum()) {
+    if (level < ZoomLevelInfo::minimumLevel()) {
-        level = zoomLevelMinimum();
+        level = ZoomLevelInfo::minimumLevel();
-    } else if (level > zoomLevelMaximum()) {
+    } else if (level > ZoomLevelInfo::maximumLevel()) {
-        level = zoomLevelMaximum();
+        level = ZoomLevelInfo::maximumLevel();
     }
     
     if (level != zoomLevel()) {
@@ -382,16 +383,6 @@ int DolphinView::zoomLevel() const
     return m_controller->zoomLevel();
 }
 
-int DolphinView::zoomLevelMinimum() const
-{
-    return m_controller->zoomLevelMinimum();
-}
-
-int DolphinView::zoomLevelMaximum() const
-{
-    return m_controller->zoomLevelMaximum();
-}
-
 void DolphinView::setSorting(Sorting sorting)
 {
     if (sorting != this->sorting()) {
@@ -1276,7 +1267,7 @@ void DolphinView::pasteToUrl(const KUrl& url)
 
 void DolphinView::updateZoomLevel(int oldZoomLevel)
 {       
-    const int newZoomLevel = DolphinController::zoomLevelForIconSize(itemView()->iconSize());
+    const int newZoomLevel = ZoomLevelInfo::zoomLevelForIconSize(itemView()->iconSize());
     if (oldZoomLevel != newZoomLevel) {
         m_controller->setZoomLevel(newZoomLevel);
         emit zoomLevelChanged(newZoomLevel);

src/dolphinview.h

@@ -236,24 +236,21 @@ public:
 
     /**
      * Sets the zoom level to \a level. It is assured that the used
-     * level is adjusted to be inside the range DolphinView::zoomLevelMinimum() and
+     * level is adjusted to be inside the range ZoomLevelInfo::minimumLevel() and
-     * DolphinView::zoomLevelMaximum().
+     * ZoomLevelInfo::maximumLevel().
      */
     void setZoomLevel(int level);
     int zoomLevel() const;
     
-    int zoomLevelMinimum() const;
-    int zoomLevelMaximum() const;
-    
     /**
      * Returns true, if zooming in is possible. If false is returned,
-     * the minimal zoom size is possible.
+     * the maximimum zooming level has been reached.
      */
     bool isZoomInPossible() const;
 
     /**
      * Returns true, if zooming out is possible. If false is returned,
-     * the maximum zoom size is possible.
+     * the minimum zooming level has been reached.
      */
     bool isZoomOutPossible() const;
 

src/dolphinviewactionhandler.cpp

@@ -21,6 +21,7 @@
 
 #include "viewpropertiesdialog.h"
 #include "dolphinview.h"
+#include "zoomlevelinfo.h"
 
 #include <konq_operations.h>
 
@@ -495,12 +496,12 @@ void DolphinViewActionHandler::slotZoomLevelChanged(int level)
 {
     QAction* zoomInAction = m_actionCollection->action(KStandardAction::name(KStandardAction::ZoomIn));
     if (zoomInAction != 0) {
-        zoomInAction->setEnabled(level < m_currentView->zoomLevelMaximum());
+        zoomInAction->setEnabled(level < ZoomLevelInfo::maximumLevel());
     }
 
     QAction* zoomOutAction = m_actionCollection->action(KStandardAction::name(KStandardAction::ZoomOut));
     if (zoomOutAction != 0) {
-        zoomOutAction->setEnabled(level > m_currentView->zoomLevelMinimum());
+        zoomOutAction->setEnabled(level > ZoomLevelInfo::minimumLevel());
     }
 }
 

src/iconsizedialog.cpp

@@ -1,184 +0,0 @@
-/***************************************************************************
- *   Copyright (C) 2006 by Peter Penz <peter.penz@gmx.at>                  *
- *                                                                         *
- *   This program is free software; you can redistribute it and/or modify  *
- *   it under the terms of the GNU General Public License as published by  *
- *   the Free Software Foundation; either version 2 of the License, or     *
- *   (at your option) any later version.                                   *
- *                                                                         *
- *   This program is distributed in the hope that it will be useful,       *
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
- *   GNU General Public License for more details.                          *
- *                                                                         *
- *   You should have received a copy of the GNU General Public License     *
- *   along with this program; if not, write to the                         *
- *   Free Software Foundation, Inc.,                                       *
- *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA          *
- ***************************************************************************/
-
-#include "iconsizedialog.h"
-
-#include "dolphinsettings.h"
-#include "pixmapviewer.h"
-
-#include "dolphin_iconsmodesettings.h"
-
-#include <kcolorscheme.h>
-#include <kiconloader.h>
-#include <klocale.h>
-#include <kvbox.h>
-
-#include <QGroupBox>
-#include <QLabel>
-#include <QSlider>
-#include <QBoxLayout>
-
-IconSizeDialog::IconSizeDialog(QWidget* parent) :
-    KDialog(parent),
-    m_iconSize(0),
-    m_previewSize(0),
-    m_iconSizeSlider(0),
-    m_iconSizeViewer(0),
-    m_previewSizeSlider(0),
-    m_previewSizeViewer(0)
-{
-    IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
-    Q_ASSERT(settings != 0);
-    m_iconSize = settings->iconSize();
-    m_previewSize = settings->previewSize();
-
-    const int spacing = KDialog::spacingHint();
-
-    setCaption(i18nc("@title:window", "Change Icon & Preview Size"));
-    setButtons(Ok | Cancel);
-    setDefaultButton(Ok);
-
-    QWidget* main = new QWidget();
-    QHBoxLayout* topLayout = new QHBoxLayout();
-
-    // create 'Icon Size' group including slider and preview
-    QGroupBox* iconSizeBox = new QGroupBox(i18nc("@title:group", "Icon Size"), main);
-
-    const QColor iconBackgroundColor = KColorScheme(QPalette::Active, KColorScheme::View).background().color();
-
-    KHBox* iconSizeHBox = new KHBox(iconSizeBox);
-    iconSizeHBox->setSpacing(spacing);
-    new QLabel(i18nc("@item:inrange Icon Size", "Small"), iconSizeHBox);
-    m_iconSizeSlider = new QSlider(Qt::Horizontal, iconSizeHBox);
-    m_iconSizeSlider->setMinimum(0);
-    m_iconSizeSlider->setMaximum(5);
-    m_iconSizeSlider->setPageStep(1);
-    m_iconSizeSlider->setValue(sliderValue(settings->iconSize()));
-    m_iconSizeSlider->setTickPosition(QSlider::TicksBelow);
-    connect(m_iconSizeSlider, SIGNAL(valueChanged(int)),
-            this, SLOT(updateIconSize(int)));
-    new QLabel(i18nc("@item:inrange Icon Size", "Large"), iconSizeHBox);
-
-    m_iconSizeViewer = new PixmapViewer(iconSizeBox, PixmapViewer::SizeTransition);
-    m_iconSizeViewer->setMinimumWidth(KIconLoader::SizeEnormous);
-    m_iconSizeViewer->setFixedHeight(KIconLoader::SizeEnormous);
-    QPalette p = m_iconSizeViewer->palette();
-    p.setColor(m_iconSizeViewer->backgroundRole(), iconBackgroundColor);
-    m_iconSizeViewer->setPalette(p);
-    updateIconSize(m_iconSizeSlider->value());
-
-    QVBoxLayout* iconSizeLayout = new QVBoxLayout(iconSizeBox);
-    iconSizeLayout->addWidget(iconSizeHBox);
-    iconSizeLayout->addWidget(m_iconSizeViewer);
-
-    // create 'Preview Size' group including slider and preview
-    QGroupBox* previewSizeBox = new QGroupBox(i18nc("@title:group", "Preview Size"), main);
-
-    KHBox* previewSizeHBox = new KHBox(previewSizeBox);
-    previewSizeHBox->setSpacing(spacing);
-    new QLabel(i18nc("@item:inrange Preview Size", "Small"), previewSizeHBox);
-    m_previewSizeSlider = new QSlider(Qt::Horizontal, previewSizeHBox);
-    m_previewSizeSlider->setMinimum(0);
-    m_previewSizeSlider->setMaximum(5);
-    m_previewSizeSlider->setPageStep(1);
-    m_previewSizeSlider->setValue(sliderValue(settings->previewSize()));
-    m_previewSizeSlider->setTickPosition(QSlider::TicksBelow);
-    connect(m_previewSizeSlider, SIGNAL(valueChanged(int)),
-            this, SLOT(updatePreviewSize(int)));
-    new QLabel(i18nc("@item:inrange Preview Size", "Large"), previewSizeHBox);
-
-    m_previewSizeViewer = new PixmapViewer(previewSizeBox, PixmapViewer::SizeTransition);
-    m_previewSizeViewer->setMinimumWidth(KIconLoader::SizeEnormous);
-    m_previewSizeViewer->setFixedHeight(KIconLoader::SizeEnormous);
-    p = m_previewSizeViewer->palette();
-    p.setColor(m_previewSizeViewer->backgroundRole(), iconBackgroundColor);
-    m_previewSizeViewer->setPalette(p);
-    updatePreviewSize(m_previewSizeSlider->value());
-
-    QVBoxLayout* previewSizeLayout = new QVBoxLayout(previewSizeBox);
-    previewSizeLayout->addWidget(previewSizeHBox);
-    previewSizeLayout->addWidget(m_previewSizeViewer);
-
-    topLayout->addWidget(iconSizeBox);
-    topLayout->addWidget(previewSizeBox);
-    main->setLayout(topLayout);
-    setMainWidget(main);
-
-    const KConfigGroup dialogConfig(KSharedConfig::openConfig("dolphinrc"),
-                                    "IconSizeDialog");
-    restoreDialogSize(dialogConfig);
-}
-
-IconSizeDialog::~IconSizeDialog()
-{
-    KConfigGroup dialogConfig(KSharedConfig::openConfig("dolphinrc"),
-                              "IconSizeDialog");
-    saveDialogSize(dialogConfig, KConfigBase::Persistent);
-}
-
-void IconSizeDialog::slotButtonClicked(int button)
-{
-    if (button == Ok) {
-        m_iconSize = iconSize(m_iconSizeSlider->value());
-        m_previewSize = iconSize(m_previewSizeSlider->value());
-    }
-
-    KDialog::slotButtonClicked(button);
-}
-
-void IconSizeDialog::updateIconSize(int value)
-{
-    m_iconSizeViewer->setPixmap(KIconLoader::global()->loadIcon("folder", KIconLoader::Desktop, iconSize(value)));
-}
-
-void IconSizeDialog::updatePreviewSize(int value)
-{
-    m_previewSizeViewer->setPixmap(KIconLoader::global()->loadIcon("preview", KIconLoader::Desktop, iconSize(value)));
-}
-
-int IconSizeDialog::iconSize(int sliderValue) const
-{
-    int size = KIconLoader::SizeMedium;
-    switch (sliderValue) {
-    case 0: size = KIconLoader::SizeSmall; break;
-    case 1: size = KIconLoader::SizeSmallMedium; break;
-    case 2: size = KIconLoader::SizeMedium; break;
-    case 3: size = KIconLoader::SizeLarge; break;
-    case 4: size = KIconLoader::SizeHuge; break;
-    case 5: size = KIconLoader::SizeEnormous; break;
-    }
-    return size;
-}
-
-int IconSizeDialog::sliderValue(int iconSize) const
-{
-    int value = 0;
-    switch (iconSize) {
-    case KIconLoader::SizeSmall:       value = 0; break;
-    case KIconLoader::SizeSmallMedium: value = 1; break;
-    case KIconLoader::SizeMedium:      value = 2; break;
-    case KIconLoader::SizeLarge:       value = 3; break;
-    case KIconLoader::SizeHuge:        value = 4; break;
-    case KIconLoader::SizeEnormous:    value = 5; break;
-    default: break;
-    }
-    return value;
-}
-
-#include "iconsizedialog.moc"

src/iconsizegroupbox.cpp

@@ -0,0 +1,88 @@
+/***************************************************************************
+ *   Copyright (C) 2008 by Peter Penz <peter.penz@gmx.at>                  *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
+ ***************************************************************************/
+
+#include "iconsizegroupbox.h"
+
+#include <klocale.h>
+
+#include <QGridLayout>
+#include <QLabel>
+#include <QSlider>
+
+IconSizeGroupBox::IconSizeGroupBox(QWidget* parent) :
+    QGroupBox(i18nc("@title:group", "Icon Size"), parent),
+    m_defaultSizeSlider(0),
+    m_previewSizeSlider(0)
+{
+    QLabel* defaultLabel = new QLabel(i18nc("@label:listbox", "Default:"), this);
+    m_defaultSizeSlider = new QSlider(Qt::Horizontal, this);
+    m_defaultSizeSlider->setPageStep(1);
+    m_defaultSizeSlider->setTickPosition(QSlider::TicksBelow);
+    connect(m_defaultSizeSlider, SIGNAL(sliderMoved(int)),
+            this, SIGNAL(defaultSizeChanged(int)));
+    
+    QLabel* previewLabel = new QLabel(i18nc("@label:listbox", "Preview:"), this);
+    m_previewSizeSlider = new QSlider(Qt::Horizontal, this);
+    m_previewSizeSlider->setPageStep(1);
+    m_previewSizeSlider->setTickPosition(QSlider::TicksBelow);
+    connect(m_previewSizeSlider, SIGNAL(sliderMoved(int)),
+            this, SIGNAL(defaultSizeChanged(int)));
+    
+    QGridLayout* layout = new QGridLayout(this);
+    layout->addWidget(defaultLabel, 0, 0);
+    layout->addWidget(m_defaultSizeSlider, 0, 1);
+    layout->addWidget(previewLabel, 1, 0);
+    layout->addWidget(m_previewSizeSlider, 1, 1);
+}
+
+IconSizeGroupBox::~IconSizeGroupBox()
+{
+}
+
+void IconSizeGroupBox::setDefaultSizeRange(int min, int max)
+{
+    m_defaultSizeSlider->setRange(min, max);
+}
+
+void IconSizeGroupBox::setPreviewSizeRange(int min, int max)
+{
+    m_previewSizeSlider->setRange(min, max);
+}
+
+void IconSizeGroupBox::setDefaultSizeValue(int value)
+{
+    m_defaultSizeSlider->setValue(value);
+}
+
+int IconSizeGroupBox::defaultSizeValue() const
+{
+    return m_defaultSizeSlider->value();
+}
+
+void IconSizeGroupBox::setPreviewSizeValue(int value)
+{
+    m_previewSizeSlider->setValue(value);
+}
+
+int IconSizeGroupBox::previewSizeValue() const
+{
+    return m_previewSizeSlider->value();
+}
+
+#include "iconsizegroupbox.moc"

src/iconsizegroupbox.h

@@ -1,5 +1,5 @@
 /***************************************************************************
- *   Copyright (C) 2006 by Peter Penz <peter.penz@gmx.at>                  *
+ *   Copyright (C) 2008 by Peter Penz <peter.penz@gmx.at>                  *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
  *   it under the terms of the GNU General Public License as published by  *
@@ -14,69 +14,46 @@
  *   You should have received a copy of the GNU General Public License     *
  *   along with this program; if not, write to the                         *
  *   Free Software Foundation, Inc.,                                       *
- *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA          *
+ *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  ***************************************************************************/
 
-#ifndef ICONSIZEDIALOG_H
+#ifndef ICONSIZEGROUPBOX_H
-#define ICONSIZEDIALOG_H
+#define ICONSIZEGROUPBOX_H
 
-#include <kdialog.h>
+#include <QGroupBox>
 
 class QSlider;
-class PixmapViewer;
 
 /**
- * @brief Allows to adjust the size for icons and previews.
+ * @short Provides a group box for adjusting the icon sizes.
  *
- * Default usage:
+ * It is possible to adjust the default icon size and the icon
- * \code
+ * size when previews are used.
- *  IconSizeDialog dialog(this);
- *  if (dialog.exec() == QDialog::Accepted) {
- *      const int iconSize = dialog.iconSize();
- *      const int previewSize = dialog.previewSize();
- *      // ...
- *  }
- * \endcode
  */
-class IconSizeDialog : public KDialog
+class IconSizeGroupBox : public QGroupBox
 {
     Q_OBJECT
 
 public:
-    explicit IconSizeDialog(QWidget* parent);
+    explicit IconSizeGroupBox(QWidget* parent);
-    virtual ~IconSizeDialog();
+    virtual ~IconSizeGroupBox();
-
+    
-    int iconSize() const
+    void setDefaultSizeRange(int min, int max);
-    {
+    void setPreviewSizeRange(int min, int max);
-        return m_iconSize;
+    
-    }
+    void setDefaultSizeValue(int value);
-    int previewSize() const
+    int defaultSizeValue() const;
-    {
+    
-        return m_previewSize;
+    void setPreviewSizeValue(int value);
-    }
+    int previewSizeValue() const;
-
+    
-protected slots:
+signals:
-    virtual void slotButtonClicked(int button);
+    void defaultSizeChanged(int value);
-
+    void previewSizeChanged(int value);
-private slots:
+    
-    void updateIconSize(int value);
-    void updatePreviewSize(int value);
-
 private:
-    /** Returns the icon size for the given slider value. */
+    QSlider* m_defaultSizeSlider;
-    int iconSize(int sliderValue) const;
-
-    /** Returns the slider value for the given icon size. */
-    int sliderValue(int iconSize) const;
-
-private:
-    int m_iconSize;
-    int m_previewSize;
-
-    QSlider* m_iconSizeSlider;
-    PixmapViewer* m_iconSizeViewer;
     QSlider* m_previewSizeSlider;
-    PixmapViewer* m_previewSizeViewer;
 };
 
 #endif

src/iconsviewsettingspage.cpp

@@ -21,7 +21,8 @@
 
 #include "dolphinfontrequester.h"
 #include "dolphinsettings.h"
-#include "iconsizedialog.h"
+#include "iconsizegroupbox.h"
+#include "zoomlevelinfo.h"
 
 #include "dolphin_iconsmodesettings.h"
 
@@ -42,9 +43,7 @@
 
 IconsViewSettingsPage::IconsViewSettingsPage(QWidget* parent) :
     ViewSettingsPageBase(parent),
-    m_iconSize(0),
+    m_iconSizeGroupBox(0),
-    m_previewSize(0),
-    m_iconSizeButton(0),
     m_textWidthBox(0),
     m_fontRequester(0),
     m_textlinesCountBox(0),
@@ -58,10 +57,20 @@ IconsViewSettingsPage::IconsViewSettingsPage(QWidget* parent) :
     setSpacing(spacing);
     setMargin(margin);
 
-    m_iconSizeButton = new QPushButton(i18nc("@action:button", "Change Icon && Preview Size..."), this);
+    // Create "Icon" properties
-    connect(m_iconSizeButton, SIGNAL(clicked()),
+    m_iconSizeGroupBox = new IconSizeGroupBox(this);
-            this, SLOT(openIconSizeDialog()));
+    m_iconSizeGroupBox->setSizePolicy(sizePolicy);
-
+    
+    const int min = ZoomLevelInfo::minimumLevel();
+    const int max = ZoomLevelInfo::maximumLevel();
+    m_iconSizeGroupBox->setDefaultSizeRange(min, max);
+    m_iconSizeGroupBox->setPreviewSizeRange(min, max);
+    
+    connect(m_iconSizeGroupBox, SIGNAL(defaultSizeChanged(int)),
+            this, SIGNAL(changed()));
+    connect(m_iconSizeGroupBox, SIGNAL(previewSizeChanged(int)),
+            this, SIGNAL(changed()));
+    
     // create 'Text' group for selecting the font, the number of lines
     // and the text width
     QGroupBox* textGroup = new QGroupBox(i18nc("@title:group", "Text"), this);
@@ -131,8 +140,10 @@ void IconsViewSettingsPage::applySettings()
 {
     IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 
-    settings->setIconSize(m_iconSize);
+    const int iconSize = ZoomLevelInfo::iconSizeForZoomLevel(m_iconSizeGroupBox->defaultSizeValue());
-    settings->setPreviewSize(m_previewSize);
+    const int previewSize = ZoomLevelInfo::iconSizeForZoomLevel(m_iconSizeGroupBox->previewSizeValue());
+    settings->setIconSize(iconSize);
+    settings->setPreviewSize(previewSize);
 
     const QFont font = m_fontRequester->font();
     const int fontHeight = QFontMetrics(font).height();
@@ -177,22 +188,17 @@ void IconsViewSettingsPage::restoreDefaults()
     loadSettings();
 }
 
-void IconsViewSettingsPage::openIconSizeDialog()
-{
-    IconSizeDialog dialog(this);
-    if (dialog.exec() == QDialog::Accepted) {
-        m_iconSize = dialog.iconSize();
-        m_previewSize = dialog.previewSize();
-        emit changed();
-    }
-}
-
 void IconsViewSettingsPage::loadSettings()
 {
     IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 
-    m_iconSize = settings->iconSize();
+    const QSize iconSize(settings->iconSize(), settings->iconSize());
-    m_previewSize = settings->previewSize();
+    const int iconSizeValue = ZoomLevelInfo::zoomLevelForIconSize(iconSize);
+    m_iconSizeGroupBox->setDefaultSizeValue(iconSizeValue);
+    
+    const QSize previewSize(settings->previewSize(), settings->previewSize());
+    const int previewSizeValue = ZoomLevelInfo::zoomLevelForIconSize(previewSize);
+    m_iconSizeGroupBox->setPreviewSizeValue(previewSizeValue);
 
     if (settings->useSystemFont()) {
         m_fontRequester->setMode(DolphinFontRequester::SystemFont);

src/iconsviewsettingspage.h

@@ -24,9 +24,9 @@
 #include <viewsettingspagebase.h>
 
 class DolphinFontRequester;
+class IconSizeGroupBox;
 class QCheckBox;
 class QComboBox;
-class QPushButton;
 class QSpinBox;
 
 /**
@@ -62,9 +62,6 @@ public:
     /** Restores the settings to default values. */
     virtual void restoreDefaults();
 
-private slots:
-    void openIconSizeDialog();
-
 private:
     void loadSettings();
 
@@ -79,10 +76,7 @@ private:
         TopToBottomInc  =  32
     };
 
-    int m_iconSize;
+    IconSizeGroupBox* m_iconSizeGroupBox;
-    int m_previewSize;
-
-    QPushButton* m_iconSizeButton;
     QComboBox* m_textWidthBox;
     DolphinFontRequester* m_fontRequester;
     QSpinBox* m_textlinesCountBox;

src/zoomlevelinfo.cpp

@@ -0,0 +1,66 @@
+/***************************************************************************
+ *   Copyright (C) 2008 by Peter Penz <peter.penz@gmx.at>                  *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
+ ***************************************************************************/
+
+#include "zoomlevelinfo.h"
+#include <kiconloader.h>
+#include <QSize>
+
+int ZoomLevelInfo::minimumLevel()
+{
+    return 0;
+}
+
+int ZoomLevelInfo::maximumLevel()
+{
+    return 7;
+}
+
+int ZoomLevelInfo::iconSizeForZoomLevel(int level)
+{
+    int size = KIconLoader::SizeMedium;
+    switch (level) {
+    case 0: size = KIconLoader::SizeSmall; break; 
+    case 1: size = KIconLoader::SizeSmallMedium; break;
+    case 2: size = KIconLoader::SizeMedium; break;
+    case 3: size = KIconLoader::SizeLarge; break;
+    case 4: size = KIconLoader::SizeHuge; break;
+    case 5: size = KIconLoader::SizeEnormous; break;
+    case 6: size = KIconLoader::SizeEnormous * 3 / 2; break;
+    case 7: size = KIconLoader::SizeEnormous * 2; break;
+    default: Q_ASSERT(false); break;
+    }
+    return size;
+}
+
+int ZoomLevelInfo::zoomLevelForIconSize(const QSize& size)
+{
+    int level = 0;
+    switch (size.height()) {
+    case KIconLoader::SizeSmall:            level = 0; break;
+    case KIconLoader::SizeSmallMedium:      level = 1; break;
+    case KIconLoader::SizeMedium:           level = 2; break;
+    case KIconLoader::SizeLarge:            level = 3; break;
+    case KIconLoader::SizeHuge:             level = 4; break;
+    case KIconLoader::SizeEnormous:         level = 5; break;
+    case KIconLoader::SizeEnormous * 3 / 2: level = 6; break;
+    case KIconLoader::SizeEnormous * 2:     level = 7; break;
+    default: Q_ASSERT(false);               level = 3; break;
+    }
+    return level;
+}

src/zoomlevelinfo.h

@@ -0,0 +1,51 @@
+/***************************************************************************
+ *   Copyright (C) 2008 by Peter Penz <peter.penz@gmx.at>                  *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
+ ***************************************************************************/
+
+#ifndef ZOOMLEVELINFO_H
+#define ZOOMLEVELINFO_H
+
+class QSize;
+
+/**
+ * @short Helper class for getting information about the zooming
+ *        capabilities.
+ */
+class ZoomLevelInfo {
+public:
+    static int minimumLevel();
+    static int maximumLevel();
+    
+    /**
+     * Helper method for the view implementation to get
+     * the icon size for the zoom level \a level that
+     * is between the range ZoomLevelInfo::minimumLevel() and
+     * ZoomLevelInfo::maximumLevel().
+     */
+    static int iconSizeForZoomLevel(int level);
+    
+    /**
+     * Helper method for the view implementation to get
+     * the zoom level for the icon size \a size that
+     * is between the range ZoomLevelInfo::minimumLevel() and
+     * ZoomLevelInfo::maximumLevel().
+     */
+    static int zoomLevelForIconSize(const QSize& size);
+};
+
+#endif