sd/source/ui/slidesorter/view/SlsPageObjectLayouter.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <view/SlsPageObjectLayouter.hxx>
  21
  22 #include <model/SlsPageDescriptor.hxx>
  23 #include <view/SlsTheme.hxx>
  24 #include <tools/IconCache.hxx>
  25 #include <Window.hxx>
  26
  27 #include <bitmaps.hlst>
  28 #include <osl/diagnose.h>
  29
  30 namespace sd::slidesorter::view {
  31
  32 namespace {
  33 const sal_Int32 gnLeftPageNumberOffset = 2;
  34 const sal_Int32 gnRightPageNumberOffset = 5;
  35 const sal_Int32 gnOuterBorderWidth = 5;
  36 const sal_Int32 gnInfoAreaMinWidth = 26;
  37 }
  38
  39 PageObjectLayouter::PageObjectLayouter (
  40     const Size& rPageObjectWindowSize,
  41     const Size& rPageSize,
  42     sd::Window *pWindow,
  43     const sal_Int32 nPageCount)
  44     : mpWindow(pWindow),
  45       maTransitionEffectIcon(IconCache::Instance().GetIcon(BMP_FADE_EFFECT_INDICATOR)),
  46       maCustomAnimationEffectIcon(IconCache::Instance().GetIcon(BMP_CUSTOM_ANIMATION_INDICATOR)),
  47       mpPageNumberFont(Theme::GetFont(Theme::Font_PageNumber, *pWindow->GetOutDev()))
  48 {
  49     const Size aPageNumberAreaSize (GetPageNumberAreaSize(nPageCount));
  50
  51     const int nMaximumBorderWidth (gnOuterBorderWidth);
  52     const int nFocusIndicatorWidth (Theme_FocusIndicatorWidth);
  53
  54     Size aPageObjectSize(rPageObjectWindowSize.Width(), rPageObjectWindowSize.Height());
  55     maPreviewBoundingBox = CalculatePreviewBoundingBox(
  56         aPageObjectSize,
  57         Size(rPageSize.Width(), rPageSize.Height()),
  58         aPageNumberAreaSize.Width(),
  59         nFocusIndicatorWidth);
  60     maFocusIndicatorBoundingBox = ::tools::Rectangle(Point(0,0), aPageObjectSize);
  61     maPageObjectBoundingBox = ::tools::Rectangle(
  62         Point(
  63             nFocusIndicatorWidth,
  64             nFocusIndicatorWidth),
  65         Size(
  66             aPageObjectSize.Width()-2*nFocusIndicatorWidth,
  67             aPageObjectSize.Height()-2*nFocusIndicatorWidth));
  68
  69     maPageNumberAreaBoundingBox = ::tools::Rectangle(
  70         Point(
  71             std::max(gnLeftPageNumberOffset,
  72                 sal_Int32(maPreviewBoundingBox.Left()
  73                 - gnRightPageNumberOffset
  74                 - aPageNumberAreaSize.Width())),
  75             nMaximumBorderWidth),
  76         aPageNumberAreaSize);
  77
  78     const Size aIconSize (maTransitionEffectIcon.GetSizePixel());
  79     maTransitionEffectBoundingBox = ::tools::Rectangle(
  80         Point(
  81             (maPreviewBoundingBox.Left() - 2*aIconSize.Width()) / 2,
  82             maPreviewBoundingBox.Bottom() - aIconSize.Height()),
  83         aIconSize);
  84     maCustomAnimationEffectBoundingBox = ::tools::Rectangle(
  85         Point(
  86             (maPreviewBoundingBox.Left() - 2*aIconSize.Width()) / 2,
  87             maPreviewBoundingBox.Bottom() - 2*aIconSize.Height()),
  88         aIconSize);
  89 }
  90
  91 PageObjectLayouter::~PageObjectLayouter()
  92 {
  93 }
  94
  95 ::tools::Rectangle PageObjectLayouter::CalculatePreviewBoundingBox (
  96     Size& rPageObjectSize,
  97     const Size& rPageSize,
  98     const sal_Int32 nPageNumberAreaWidth,
  99     const sal_Int32 nFocusIndicatorWidth)
 100 {
 101     const sal_Int32 nIconWidth (maTransitionEffectIcon.GetSizePixel().Width());
 102     const sal_Int32 nLeftAreaWidth (
 103         ::std::max(
 104             gnInfoAreaMinWidth,
 105             gnRightPageNumberOffset
 106                 + ::std::max(
 107                     nPageNumberAreaWidth,
 108                     nIconWidth)));
 109     sal_Int32 nPreviewWidth;
 110     sal_Int32 nPreviewHeight;
 111     const double nPageAspectRatio (double(rPageSize.Width()) / double(rPageSize.Height()));
 112     if (rPageObjectSize.Height() == 0)
 113     {
 114         // Calculate height so that the preview fills the available
 115         // horizontal space completely while observing the aspect ratio of
 116         // the preview.
 117         nPreviewWidth = rPageObjectSize.Width()
 118             - nLeftAreaWidth - gnOuterBorderWidth - 2*nFocusIndicatorWidth - 1;
 119         nPreviewHeight = ::basegfx::fround(nPreviewWidth / nPageAspectRatio);
 120         rPageObjectSize.setHeight(nPreviewHeight + 2*gnOuterBorderWidth + 2*nFocusIndicatorWidth + 1);
 121     }
 122     else if (rPageObjectSize.Width() == 0)
 123     {
 124         // Calculate the width of the page object so that the preview fills
 125         // the available vertical space completely while observing the
 126         // aspect ratio of the preview.
 127         nPreviewHeight = rPageObjectSize.Height() - 2*gnOuterBorderWidth - 2*nFocusIndicatorWidth - 1;
 128         nPreviewWidth = ::basegfx::fround(nPreviewHeight * nPageAspectRatio);
 129         rPageObjectSize.setWidth(nPreviewWidth
 130             + nLeftAreaWidth + gnOuterBorderWidth + 2*nFocusIndicatorWidth + 1);
 131
 132     }
 133     else
 134     {
 135         // The size of the page object is given.  Calculate the size of the
 136         // preview.
 137         nPreviewWidth = rPageObjectSize.Width()
 138             - nLeftAreaWidth - gnOuterBorderWidth - 2*nFocusIndicatorWidth - 1;
 139         nPreviewHeight = rPageObjectSize.Height()
 140             - gnOuterBorderWidth - 2*nFocusIndicatorWidth - 1;
 141         if (double(nPreviewWidth)/double(nPreviewHeight) > nPageAspectRatio)
 142             nPreviewWidth = ::basegfx::fround(nPreviewHeight * nPageAspectRatio);
 143         else
 144             nPreviewHeight = ::basegfx::fround(nPreviewWidth / nPageAspectRatio);
 145     }
 146     // When the preview does not fill the available space completely then
 147     // place it flush right and vertically centered.
 148     const int nLeft (rPageObjectSize.Width()
 149         - gnOuterBorderWidth - nPreviewWidth - nFocusIndicatorWidth - 1);
 150     const int nTop ((rPageObjectSize.Height() - nPreviewHeight)/2);
 151     return ::tools::Rectangle(
 152         nLeft,
 153         nTop,
 154         nLeft + nPreviewWidth,
 155         nTop + nPreviewHeight);
 156 }
 157
 158 ::tools::Rectangle PageObjectLayouter::GetBoundingBox (
 159     const model::SharedPageDescriptor& rpPageDescriptor,
 160     const Part ePart,
 161     const CoordinateSystem eCoordinateSystem,
 162     bool bIgnoreLocation)
 163 {
 164     OSL_ASSERT(rpPageDescriptor);
 165     Point aLocation(0,0);
 166     if (rpPageDescriptor)
 167         aLocation = rpPageDescriptor->GetLocation( bIgnoreLocation );
 168     return GetBoundingBox(aLocation, ePart, eCoordinateSystem);
 169 }
 170
 171 ::tools::Rectangle PageObjectLayouter::GetBoundingBox (
 172     const Point& rPageObjectLocation,
 173     const Part ePart,
 174     const CoordinateSystem eCoordinateSystem)
 175 {
 176     ::tools::Rectangle aBoundingBox;
 177     switch (ePart)
 178     {
 179         case Part::FocusIndicator:
 180             aBoundingBox = maFocusIndicatorBoundingBox;
 181             break;
 182
 183         case Part::PageObject:
 184             aBoundingBox = maPageObjectBoundingBox;
 185             break;
 186
 187         case Part::Preview:
 188             aBoundingBox = maPreviewBoundingBox;
 189             break;
 190
 191         case Part::PageNumber:
 192             aBoundingBox = maPageNumberAreaBoundingBox;
 193             break;
 194
 195         case Part::TransitionEffectIndicator:
 196             aBoundingBox = maTransitionEffectBoundingBox;
 197             break;
 198         case Part::CustomAnimationEffectIndicator:
 199             aBoundingBox = maCustomAnimationEffectBoundingBox;
 200             break;
 201     }
 202
 203     // Adapt coordinates to the requested coordinate system.
 204     Point aLocation (rPageObjectLocation);
 205     if (eCoordinateSystem == WindowCoordinateSystem)
 206         aLocation += mpWindow->GetMapMode().GetOrigin();
 207
 208     return ::tools::Rectangle(
 209         aBoundingBox.TopLeft() + aLocation,
 210         aBoundingBox.BottomRight() + aLocation);
 211 }
 212
 213 Size PageObjectLayouter::GetPreviewSize ()
 214 {
 215     return GetBoundingBox(Point(0,0), PageObjectLayouter::Part::Preview,
 216                           WindowCoordinateSystem).GetSize();
 217 }
 218
 219 Size PageObjectLayouter::GetGridMaxSize()
 220 {
 221     return GetBoundingBox(Point(0,0), PageObjectLayouter::Part::FocusIndicator,
 222                           WindowCoordinateSystem).GetSize();
 223 }
 224
 225 Size PageObjectLayouter::GetPageNumberAreaSize (const int nPageCount)
 226 {
 227     OSL_ASSERT(mpWindow);
 228
 229     // Set the correct font.
 230     vcl::Font aOriginalFont (mpWindow->GetFont());
 231     if (mpPageNumberFont)
 232         mpWindow->SetFont(*mpPageNumberFont);
 233
 234     OUString sPageNumberTemplate;
 235     if (nPageCount < 10)
 236         sPageNumberTemplate = "9";
 237     else if (nPageCount < 100)
 238         sPageNumberTemplate = "99";
 239     else if (nPageCount < 200)
 240         // Just for the case that 1 is narrower than 9.
 241         sPageNumberTemplate = "199";
 242     else if (nPageCount < 1000)
 243         sPageNumberTemplate = "999";
 244     else
 245         sPageNumberTemplate = "9999";
 246     // More than 9999 pages are not handled.
 247
 248     const Size aSize (
 249         mpWindow->GetTextWidth(sPageNumberTemplate),
 250         mpWindow->GetTextHeight());
 251
 252     mpWindow->SetFont(aOriginalFont);
 253
 254     return aSize;
 255 }
 256
 257 } // end of namespace ::sd::slidesorter::view
 258
 259 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */