1 files changed, 259 insertions, 0 deletions
diff --git a/sd/source/ui/slidesorter/view/SlsPageObjectLayouter.cxx b/sd/source/ui/slidesorter/view/SlsPageObjectLayouter.cxx
new file mode 100644
index 000000000..b26eb0746
--- /dev/null
+++ b/sd/source/ui/slidesorter/view/SlsPageObjectLayouter.cxx
@@ -0,0 +1,259 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <view/SlsPageObjectLayouter.hxx>
+
+#include <model/SlsPageDescriptor.hxx>
+#include <view/SlsTheme.hxx>
+#include <tools/IconCache.hxx>
+#include <Window.hxx>
+
+#include <bitmaps.hlst>
+#include <osl/diagnose.h>
+
+namespace sd::slidesorter::view {
+
+namespace {
+const sal_Int32 gnLeftPageNumberOffset = 2;
+const sal_Int32 gnRightPageNumberOffset = 5;
+const sal_Int32 gnOuterBorderWidth = 5;
+const sal_Int32 gnInfoAreaMinWidth = 26;
+}
+
+PageObjectLayouter::PageObjectLayouter (
+    const Size& rPageObjectWindowSize,
+    const Size& rPageSize,
+    sd::Window *pWindow,
+    const sal_Int32 nPageCount)
+    : mpWindow(pWindow),
+      maTransitionEffectIcon(IconCache::Instance().GetIcon(BMP_FADE_EFFECT_INDICATOR)),
+      maCustomAnimationEffectIcon(IconCache::Instance().GetIcon(BMP_CUSTOM_ANIMATION_INDICATOR)),
+      mpPageNumberFont(Theme::GetFont(Theme::Font_PageNumber, *pWindow->GetOutDev()))
+{
+    const Size aPageNumberAreaSize (GetPageNumberAreaSize(nPageCount));
+
+    const int nMaximumBorderWidth (gnOuterBorderWidth);
+    const int nFocusIndicatorWidth (Theme_FocusIndicatorWidth);
+
+    Size aPageObjectSize(rPageObjectWindowSize.Width(), rPageObjectWindowSize.Height());
+    maPreviewBoundingBox = CalculatePreviewBoundingBox(
+        aPageObjectSize,
+        Size(rPageSize.Width(), rPageSize.Height()),
+        aPageNumberAreaSize.Width(),
+        nFocusIndicatorWidth);
+    maFocusIndicatorBoundingBox = ::tools::Rectangle(Point(0,0), aPageObjectSize);
+    maPageObjectBoundingBox = ::tools::Rectangle(
+        Point(
+            nFocusIndicatorWidth,
+            nFocusIndicatorWidth),
+        Size(
+            aPageObjectSize.Width()-2*nFocusIndicatorWidth,
+            aPageObjectSize.Height()-2*nFocusIndicatorWidth));
+
+    maPageNumberAreaBoundingBox = ::tools::Rectangle(
+        Point(
+            std::max(gnLeftPageNumberOffset,
+                sal_Int32(maPreviewBoundingBox.Left()
+                - gnRightPageNumberOffset
+                - aPageNumberAreaSize.Width())),
+            nMaximumBorderWidth),
+        aPageNumberAreaSize);
+
+    const Size aIconSize (maTransitionEffectIcon.GetSizePixel());
+    maTransitionEffectBoundingBox = ::tools::Rectangle(
+        Point(
+            (maPreviewBoundingBox.Left() - 2*aIconSize.Width()) / 2,
+            maPreviewBoundingBox.Bottom() - aIconSize.Height()),
+        aIconSize);
+    maCustomAnimationEffectBoundingBox = ::tools::Rectangle(
+        Point(
+            (maPreviewBoundingBox.Left() - 2*aIconSize.Width()) / 2,
+            maPreviewBoundingBox.Bottom() - 2*aIconSize.Height()),
+        aIconSize);
+}
+
+PageObjectLayouter::~PageObjectLayouter()
+{
+}
+
+::tools::Rectangle PageObjectLayouter::CalculatePreviewBoundingBox (
+    Size& rPageObjectSize,
+    const Size& rPageSize,
+    const sal_Int32 nPageNumberAreaWidth,
+    const sal_Int32 nFocusIndicatorWidth)
+{
+    const sal_Int32 nIconWidth (maTransitionEffectIcon.GetSizePixel().Width());
+    const sal_Int32 nLeftAreaWidth (
+        ::std::max(
+            gnInfoAreaMinWidth,
+            gnRightPageNumberOffset
+                + ::std::max(
+                    nPageNumberAreaWidth,
+                    nIconWidth)));
+    sal_Int32 nPreviewWidth;
+    sal_Int32 nPreviewHeight;
+    const double nPageAspectRatio (double(rPageSize.Width()) / double(rPageSize.Height()));
+    if (rPageObjectSize.Height() == 0)
+    {
+        // Calculate height so that the preview fills the available
+        // horizontal space completely while observing the aspect ratio of
+        // the preview.
+        nPreviewWidth = rPageObjectSize.Width()
+            - nLeftAreaWidth - gnOuterBorderWidth - 2*nFocusIndicatorWidth - 1;
+        nPreviewHeight = ::basegfx::fround(nPreviewWidth / nPageAspectRatio);
+        rPageObjectSize.setHeight(nPreviewHeight + 2*gnOuterBorderWidth + 2*nFocusIndicatorWidth + 1);
+    }
+    else if (rPageObjectSize.Width() == 0)
+    {
+        // Calculate the width of the page object so that the preview fills
+        // the available vertical space completely while observing the
+        // aspect ratio of the preview.
+        nPreviewHeight = rPageObjectSize.Height() - 2*gnOuterBorderWidth - 2*nFocusIndicatorWidth - 1;
+        nPreviewWidth = ::basegfx::fround(nPreviewHeight * nPageAspectRatio);
+        rPageObjectSize.setWidth(nPreviewWidth
+            + nLeftAreaWidth + gnOuterBorderWidth + 2*nFocusIndicatorWidth + 1);
+
+    }
+    else
+    {
+        // The size of the page object is given.  Calculate the size of the
+        // preview.
+        nPreviewWidth = rPageObjectSize.Width()
+            - nLeftAreaWidth - gnOuterBorderWidth - 2*nFocusIndicatorWidth - 1;
+        nPreviewHeight = rPageObjectSize.Height()
+            - gnOuterBorderWidth - 2*nFocusIndicatorWidth - 1;
+        if (double(nPreviewWidth)/double(nPreviewHeight) > nPageAspectRatio)
+            nPreviewWidth = ::basegfx::fround(nPreviewHeight * nPageAspectRatio);
+        else
+            nPreviewHeight = ::basegfx::fround(nPreviewWidth / nPageAspectRatio);
+    }
+    // When the preview does not fill the available space completely then
+    // place it flush right and vertically centered.
+    const int nLeft (rPageObjectSize.Width()
+        - gnOuterBorderWidth - nPreviewWidth - nFocusIndicatorWidth - 1);
+    const int nTop ((rPageObjectSize.Height() - nPreviewHeight)/2);
+    return ::tools::Rectangle(
+        nLeft,
+        nTop,
+        nLeft + nPreviewWidth,
+        nTop + nPreviewHeight);
+}
+
+::tools::Rectangle PageObjectLayouter::GetBoundingBox (
+    const model::SharedPageDescriptor& rpPageDescriptor,
+    const Part ePart,
+    const CoordinateSystem eCoordinateSystem,
+    bool bIgnoreLocation)
+{
+    OSL_ASSERT(rpPageDescriptor);
+    Point aLocation(0,0);
+    if (rpPageDescriptor)
+        aLocation = rpPageDescriptor->GetLocation( bIgnoreLocation );
+    return GetBoundingBox(aLocation, ePart, eCoordinateSystem);
+}
+
+::tools::Rectangle PageObjectLayouter::GetBoundingBox (
+    const Point& rPageObjectLocation,
+    const Part ePart,
+    const CoordinateSystem eCoordinateSystem)
+{
+    ::tools::Rectangle aBoundingBox;
+    switch (ePart)
+    {
+        case Part::FocusIndicator:
+            aBoundingBox = maFocusIndicatorBoundingBox;
+            break;
+
+        case Part::PageObject:
+            aBoundingBox = maPageObjectBoundingBox;
+            break;
+
+        case Part::Preview:
+            aBoundingBox = maPreviewBoundingBox;
+            break;
+
+        case Part::PageNumber:
+            aBoundingBox = maPageNumberAreaBoundingBox;
+            break;
+
+        case Part::TransitionEffectIndicator:
+            aBoundingBox = maTransitionEffectBoundingBox;
+            break;
+        case Part::CustomAnimationEffectIndicator:
+            aBoundingBox = maCustomAnimationEffectBoundingBox;
+            break;
+    }
+
+    // Adapt coordinates to the requested coordinate system.
+    Point aLocation (rPageObjectLocation);
+    if (eCoordinateSystem == WindowCoordinateSystem)
+        aLocation += mpWindow->GetMapMode().GetOrigin();
+
+    return ::tools::Rectangle(
+        aBoundingBox.TopLeft() + aLocation,
+        aBoundingBox.BottomRight() + aLocation);
+}
+
+Size PageObjectLayouter::GetPreviewSize ()
+{
+    return GetBoundingBox(Point(0,0), PageObjectLayouter::Part::Preview,
+                          WindowCoordinateSystem).GetSize();
+}
+
+Size PageObjectLayouter::GetGridMaxSize()
+{
+    return GetBoundingBox(Point(0,0), PageObjectLayouter::Part::FocusIndicator,
+                          WindowCoordinateSystem).GetSize();
+}
+
+Size PageObjectLayouter::GetPageNumberAreaSize (const int nPageCount)
+{
+    OSL_ASSERT(mpWindow);
+
+    // Set the correct font.
+    vcl::Font aOriginalFont (mpWindow->GetFont());
+    if (mpPageNumberFont)
+        mpWindow->SetFont(*mpPageNumberFont);
+
+    OUString sPageNumberTemplate;
+    if (nPageCount < 10)
+        sPageNumberTemplate = "9";
+    else if (nPageCount < 100)
+        sPageNumberTemplate = "99";
+    else if (nPageCount < 200)
+        // Just for the case that 1 is narrower than 9.
+        sPageNumberTemplate = "199";
+    else if (nPageCount < 1000)
+        sPageNumberTemplate = "999";
+    else
+        sPageNumberTemplate = "9999";
+    // More than 9999 pages are not handled.
+
+    const Size aSize (
+        mpWindow->GetTextWidth(sPageNumberTemplate),
+        mpWindow->GetTextHeight());
+
+    mpWindow->SetFont(aOriginalFont);
+
+    return aSize;
+}
+
+} // end of namespace ::sd::slidesorter::view
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */