File kdegraphics-trinity-kpdf-cover.patch of Package kdegraphics3

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File kdegraphics-trinity-kpdf-cover.patch of Package kdegraphics3 (Revision ffd75ec0e1e1e2475fafd8b25fae12d6)

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From 3afb31110af4b60836c340d2794cc6de092b9e1d Mon Sep 17 00:00:00 2001
From: Mavridis Philippe <mavridisf@gmail.com>
Date: Sat, 16 Jan 2021 12:57:12 +0200
Subject: Cover page support for KPDF

This resolves issue #26.

Signed-off-by: Mavridis Philippe <mavridisf@gmail.com>
---
 kpdf/conf/kpdf.kcfg  |  3 +++
 kpdf/part.rc         |  1 +
 kpdf/ui/pageview.cpp | 43 ++++++++++++++++++++++++++++++++++++++++---
 kpdf/ui/pageview.h   |  1 +
 4 files changed, 45 insertions(+), 3 deletions(-)

diff --git a/kpdf/conf/kpdf.kcfg b/kpdf/conf/kpdf.kcfg
index 9f54b412..7f84081e 100644
--- a/kpdf/conf/kpdf.kcfg
+++ b/kpdf/conf/kpdf.kcfg
@@ -76,6 +76,9 @@
   <entry key="ViewContinuous" type="Bool" >
    <default>true</default>
   </entry>
+  <entry key="ViewCoverPage" type="Bool" >
+   <default>false</default>
+  </entry>
   <entry key="ViewColumns" type="UInt" >
    <default>1</default>
    <min>1</min>
diff --git a/kpdf/part.rc b/kpdf/part.rc
index 194e94ac..d69959d4 100644
--- a/kpdf/part.rc
+++ b/kpdf/part.rc
@@ -24,6 +24,7 @@
     <Separator/>
     <Action name="view_continuous"/>
     <Action name="view_twopages"/>
+    <Action name="view_coverpage"/>
   </Menu>
   <Menu name="go"><text>&amp;Go</text>
     <Action name="previous_page"/>
diff --git a/kpdf/ui/pageview.cpp b/kpdf/ui/pageview.cpp
index 88f599d6..8225bf32 100644
--- a/kpdf/ui/pageview.cpp
+++ b/kpdf/ui/pageview.cpp
@@ -114,6 +114,7 @@ public:
     KToggleAction * aZoomFitText;
     KToggleAction * aViewTwoPages;
     KToggleAction * aViewContinuous;
+    KToggleAction * aViewCoverPage;
     KAction * aPrevAction;
 };
 
@@ -282,6 +283,11 @@ void PageView::setupActions( KActionCollection * ac )
     connect( d->aViewContinuous, SIGNAL( toggled( bool ) ), SLOT( slotContinuousToggled( bool ) ) );
     d->aViewContinuous->setChecked( KpdfSettings::viewContinuous() );
 
+    d->aViewCoverPage = new KToggleAction( i18n("Co&ver Page"), "contents2", 0, ac, "view_coverpage" );
+    connect( d->aViewCoverPage, SIGNAL( toggled( bool ) ), SLOT( slotCoverPageToggled( bool ) ) );
+    d->aViewCoverPage->setChecked( KpdfSettings::viewCoverPage() );
+    d->aViewCoverPage->setEnabled( KpdfSettings::viewColumns() > 1 );
+
     // Mouse-Mode actions
     d->aMouseNormal = new KRadioAction( i18n("&Browse Tool"), "mouse", 0, this, SLOT( slotSetMouseNormal() ), ac, "mouse_drag" );
     d->aMouseNormal->setExclusiveGroup( "MouseType" );
@@ -1718,11 +1724,19 @@ void PageView::slotRelayoutPages()
             insertY = 4; // 2 + 4*d->zoomFactor ?
         cIdx = 0;
         rIdx = 0;
+
+	if( KpdfSettings::viewColumns() == 2 && KpdfSettings::viewCoverPage() )
+		++cIdx;
+
         for ( iIt = d->items.begin(); iIt != iEnd; ++iIt )
         {
             PageViewItem * item = *iIt;
             int cWidth = colWidth[ cIdx ],
                 rHeight = rowHeight[ rIdx ];
+
+            if( KpdfSettings::viewColumns() == 2 && KpdfSettings::viewCoverPage() && item->pageNumber() == 0 ) // align widget right inside viewport
+                insertX+=cWidth;
+
             // center widget inside 'cells'
             item->moveTo( insertX + (cWidth - item->width()) / 2,
                           insertY + (rHeight - item->height()) / 2 );
@@ -1776,14 +1790,24 @@ void PageView::slotRelayoutPages()
         // 2) hide all widgets except the displayable ones and dispose those
         int insertX = 0;
         cIdx = 0;
+
+        if( KpdfSettings::viewColumns() == 2 && KpdfSettings::viewCoverPage() && (int)d->document->currentPage() == 0 )
+            ++cIdx;
+
         for ( iIt = d->items.begin(); iIt != iEnd; ++iIt )
         {
             PageViewItem * item = *iIt;
             if ( item == currentItem || (cIdx > 0 && cIdx < nCols) )
             {
-                // center widget inside 'cells'
-                item->moveTo( insertX + (colWidth[ cIdx ] - item->width()) / 2,
-                              (fullHeight - item->height()) / 2 );
+                if( KpdfSettings::viewCoverPage() && (int)d->document->currentPage() == 0 ) {
+                    // center widget inside viewport
+                    item->moveTo( insertX + (viewportWidth - item->width()) / 2,
+                                  (viewportHeight - item->height()) / 2 );
+                } else {
+                    // center widget inside 'cells'
+                    item->moveTo( insertX + (colWidth[ cIdx ] - item->width()) / 2,
+                                  (fullHeight - item->height()) / 2 );
+                }
                 // advance col index
                 insertX += colWidth[ cIdx ];
                 cIdx++;
@@ -2110,6 +2134,8 @@ void PageView::slotTwoPagesToggled( bool on )
         if ( d->document->pages() > 0 )
             slotRelayoutPages();
     }
+
+    d->aViewCoverPage->setEnabled( on );
 }
 
 void PageView::slotContinuousToggled( bool on )
@@ -2123,6 +2149,17 @@ void PageView::slotContinuousToggled( bool on )
     }
 }
 
+void PageView::slotCoverPageToggled( bool on )
+{
+    if ( KpdfSettings::viewCoverPage() != on )
+    {
+        KpdfSettings::setViewCoverPage( on );
+        KpdfSettings::writeConfig();
+        if ( d->document->pages() > 0 )
+            slotRelayoutPages();
+    }
+}
+
 void PageView::slotSetMouseNormal()
 {
     d->mouseMode = MouseNormal;
diff --git a/kpdf/ui/pageview.h b/kpdf/ui/pageview.h
index 901ec9e6..267c58f5 100644
--- a/kpdf/ui/pageview.h
+++ b/kpdf/ui/pageview.h
@@ -140,6 +140,7 @@ class PageView : public QScrollView, public DocumentObserver
         void slotRotateLeft();
         void slotTwoPagesToggled( bool );
         void slotContinuousToggled( bool );
+	void slotCoverPageToggled( bool );
         void slotSetMouseNormal();
         void slotSetMouseZoom();
         void slotSetMouseSelect();
-- 
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File kdegraphics-trinity-kpdf-cover.patch of Package kdegraphics3 (Revision ffd75ec0e1e1e2475fafd8b25fae12d6)

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