workspace/kcontrol/colors/previewwidget.cpp

   1 /* Preview widget for KDE Display color scheme setup module
   2  * Copyright (C) 2007 Matthew Woehlke <mw_triad@users.sourceforge.net>
   3  * eventFilter code Copyright (C) 2007 Urs Wolfer <uwolfer @ kde.org>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; see the file COPYING.  If not, write to
  17  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  18  * Boston, MA 02110-1301, USA.
  19  */
  20
  21 #include "previewwidget.h"
  22
  23 #include <KGlobalSettings>
  24 #include <KColorScheme>
  25
  26 PreviewWidget::PreviewWidget(QWidget *parent) : QFrame(parent)
  27 {
  28     setupUi(this);
  29
  30     // set correct colors on... lots of things
  31     setAutoFillBackground(true);
  32     frame->setBackgroundRole(QPalette::Base);
  33     viewWidget->setBackgroundRole(QPalette::Base);
  34     labelView0->setBackgroundRole(QPalette::Base);
  35     labelView3->setBackgroundRole(QPalette::Base);
  36     labelView4->setBackgroundRole(QPalette::Base);
  37     labelView2->setBackgroundRole(QPalette::Base);
  38     labelView1->setBackgroundRole(QPalette::Base);
  39     labelView5->setBackgroundRole(QPalette::Base);
  40     labelView6->setBackgroundRole(QPalette::Base);
  41     labelView7->setBackgroundRole(QPalette::Base);
  42     selectionWidget->setBackgroundRole(QPalette::Highlight);
  43     labelSelection0->setBackgroundRole(QPalette::Highlight);
  44     labelSelection3->setBackgroundRole(QPalette::Highlight);
  45     labelSelection4->setBackgroundRole(QPalette::Highlight);
  46     labelSelection2->setBackgroundRole(QPalette::Highlight);
  47     labelSelection1->setBackgroundRole(QPalette::Highlight);
  48     labelSelection5->setBackgroundRole(QPalette::Highlight);
  49     labelSelection6->setBackgroundRole(QPalette::Highlight);
  50     labelSelection7->setBackgroundRole(QPalette::Highlight);
  51
  52     QList<QWidget*> widgets = findChildren<QWidget*>();
  53     foreach (QWidget* widget, widgets)
  54     {
  55         widget->installEventFilter(this);
  56         widget->setFocusPolicy(Qt::NoFocus);
  57     }
  58 }
  59
  60 PreviewWidget::~PreviewWidget()
  61 {
  62 }
  63
  64 bool PreviewWidget::eventFilter(QObject *, QEvent *ev)
  65 {
  66     switch (ev->type())
  67     {
  68         case QEvent::MouseButtonPress:
  69         case QEvent::MouseButtonRelease:
  70         case QEvent::MouseButtonDblClick:
  71         case QEvent::MouseMove:
  72         case QEvent::KeyPress:
  73         case QEvent::KeyRelease:
  74         case QEvent::Enter:
  75         case QEvent::Leave:
  76         case QEvent::Wheel:
  77         case QEvent::ContextMenu:
  78             return true; // ignore
  79         default:
  80             break;
  81     }
  82     return false;
  83 }
  84
  85 inline void copyPaletteBrush(QPalette &palette, QPalette::ColorGroup state,
  86                              QPalette::ColorRole role)
  87 {
  88     palette.setBrush(QPalette::Active, role, palette.brush(state, role));
  89     if (state == QPalette::Disabled)
  90         // ### hack, while Qt has no inactive+disabled state
  91         // TODO copy from Inactive+Disabled to Inactive instead
  92         palette.setBrush(QPalette::Inactive, role,
  93                          palette.brush(QPalette::Disabled, role));
  94 }
  95
  96 void PreviewWidget::setPaletteRecursive(QWidget *widget,
  97                                         const QPalette &palette)
  98 {
  99     widget->setPalette(palette);
 100
 101     const QObjectList children = widget->children();
 102     foreach (QObject *child, children) {
 103         if (child->isWidgetType())
 104             setPaletteRecursive((QWidget*)child, palette);
 105     }
 106 }
 107
 108 inline void adjustWidgetForeground(QWidget *widget, QPalette::ColorGroup state,
 109                                    const KSharedConfigPtr &config,
 110                                    QPalette::ColorRole color,
 111                                    KColorScheme::ColorSet set,
 112                                    KColorScheme::ForegroundRole role)
 113 {
 114     QPalette palette = widget->palette();
 115     KColorScheme::adjustForeground(palette, role, color, set, config);
 116     copyPaletteBrush(palette, state, color);
 117     widget->setPalette(palette);
 118 }
 119
 120 void PreviewWidget::setPalette(const KSharedConfigPtr &config,
 121                                QPalette::ColorGroup state)
 122 {
 123     QPalette palette = KGlobalSettings::createApplicationPalette(config);
 124
 125     if (state != QPalette::Active) {
 126         copyPaletteBrush(palette, state, QPalette::Base);
 127         copyPaletteBrush(palette, state, QPalette::Text);
 128         copyPaletteBrush(palette, state, QPalette::Window);
 129         copyPaletteBrush(palette, state, QPalette::WindowText);
 130         copyPaletteBrush(palette, state, QPalette::Button);
 131         copyPaletteBrush(palette, state, QPalette::ButtonText);
 132         copyPaletteBrush(palette, state, QPalette::Highlight);
 133         copyPaletteBrush(palette, state, QPalette::HighlightedText);
 134         copyPaletteBrush(palette, state, QPalette::AlternateBase);
 135         copyPaletteBrush(palette, state, QPalette::Link);
 136         copyPaletteBrush(palette, state, QPalette::LinkVisited);
 137         copyPaletteBrush(palette, state, QPalette::Light);
 138         copyPaletteBrush(palette, state, QPalette::Midlight);
 139         copyPaletteBrush(palette, state, QPalette::Mid);
 140         copyPaletteBrush(palette, state, QPalette::Dark);
 141         copyPaletteBrush(palette, state, QPalette::Shadow);
 142     }
 143
 144     setPaletteRecursive(this, palette);
 145
 146 #define ADJUST_WIDGET_FOREGROUND(w,c,s,r) \
 147     adjustWidgetForeground(w, state, config, QPalette::c, KColorScheme::s, KColorScheme::r);
 148
 149     ADJUST_WIDGET_FOREGROUND(labelView1, Text, View, InactiveText);
 150     ADJUST_WIDGET_FOREGROUND(labelView2, Text, View, ActiveText);
 151     ADJUST_WIDGET_FOREGROUND(labelView3, Text, View, LinkText);
 152     ADJUST_WIDGET_FOREGROUND(labelView4, Text, View, VisitedText);
 153     ADJUST_WIDGET_FOREGROUND(labelView5, Text, View, NegativeText);
 154     ADJUST_WIDGET_FOREGROUND(labelView6, Text, View, NeutralText);
 155     ADJUST_WIDGET_FOREGROUND(labelView7, Text, View, PositiveText);
 156
 157     ADJUST_WIDGET_FOREGROUND(labelSelection1, HighlightedText, Selection, InactiveText);
 158     ADJUST_WIDGET_FOREGROUND(labelSelection2, HighlightedText, Selection, ActiveText);
 159     ADJUST_WIDGET_FOREGROUND(labelSelection3, HighlightedText, Selection, LinkText);
 160     ADJUST_WIDGET_FOREGROUND(labelSelection4, HighlightedText, Selection, VisitedText);
 161     ADJUST_WIDGET_FOREGROUND(labelSelection5, HighlightedText, Selection, NegativeText);
 162     ADJUST_WIDGET_FOREGROUND(labelSelection6, HighlightedText, Selection, NeutralText);
 163     ADJUST_WIDGET_FOREGROUND(labelSelection7, HighlightedText, Selection, PositiveText);
 164 }
 165
 166 #include "previewwidget.moc"