slideshow/source/engine/slideoverlaybutton.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
   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 <sal/config.h>
  21
  22 #include <eventmultiplexer.hxx>
  23 #include "slideoverlaybutton.hxx"
  24
  25 #include <canvas/canvastools.hxx>
  26 #include <cppcanvas/customsprite.hxx>
  27 #include <basegfx/vector/b2dvector.hxx>
  28 #include <comphelper/diagnose_ex.hxx>
  29
  30 #include <com/sun/star/presentation/XSlideShowView.hpp>
  31 #include <com/sun/star/rendering/XCanvas.hpp>
  32
  33 #include <algorithm>
  34 #include <utility>
  35
  36 namespace slideshow::internal
  37 {
  38 SlideOverlayButtonSharedPtr SlideOverlayButton::create(
  39     const css::uno::Reference<css::rendering::XBitmap>& xIconBitmap, css::awt::Point pPosition,
  40     std::function<void(basegfx::B2DPoint)> clickHandler, ScreenUpdater& rScreenUpdater,
  41     EventMultiplexer& rEventMultiplexer, const UnoViewContainer& rViewContainer)
  42 {
  43     SlideOverlayButtonSharedPtr pRet(new SlideOverlayButton(
  44         xIconBitmap, pPosition, clickHandler, rScreenUpdater, rEventMultiplexer, rViewContainer));
  45
  46     rEventMultiplexer.addViewHandler(pRet);
  47     // Set priority to 1000 so that the handler fires before the click handler on the slide
  48     rEventMultiplexer.addClickHandler(pRet, 1000);
  49     return pRet;
  50 }
  51
  52 SlideOverlayButton::SlideOverlayButton(css::uno::Reference<css::rendering::XBitmap> xIconBitmap,
  53                                        css::awt::Point pPosition,
  54                                        std::function<void(basegfx::B2DPoint)> clickHandler,
  55                                        ScreenUpdater& rScreenUpdater,
  56                                        EventMultiplexer& rEventMultiplexer,
  57                                        const UnoViewContainer& rViewContainer)
  58     : mxIconBitmap(std::move(xIconBitmap))
  59     , mrEventMultiplexer(rEventMultiplexer)
  60     , mpPosition(pPosition)
  61     , mClickHandler(clickHandler)
  62     , mrScreenUpdater(rScreenUpdater)
  63 {
  64     for (const auto& pView : rViewContainer)
  65         viewAdded(pView);
  66 }
  67
  68 void SlideOverlayButton::setVisible(const bool bVisible)
  69 {
  70     if (mbVisible == bVisible)
  71         return;
  72
  73     mbVisible = bVisible;
  74
  75     for (const auto& rView : maViews)
  76         if (rView.second)
  77             rView.second->show();
  78
  79     // sprites changed, need a screen update for this frame.
  80     mrScreenUpdater.requestImmediateUpdate();
  81 }
  82
  83 css::geometry::IntegerSize2D SlideOverlayButton::getSize() const { return mxIconBitmap->getSize(); }
  84
  85 basegfx::B2DPoint SlideOverlayButton::calcSpritePos(UnoViewSharedPtr const& rView) const
  86 {
  87     const css::awt::Rectangle aViewArea(rView->getUnoView()->getCanvasArea());
  88     return basegfx::B2DPoint(
  89         aViewArea.X + std::min(aViewArea.Width, mpPosition.X),
  90         aViewArea.Y
  91             + std::max(sal_Int32(0),
  92                        aViewArea.Height - mxIconBitmap->getSize().Height - mpPosition.Y));
  93 }
  94
  95 void SlideOverlayButton::viewAdded(const UnoViewSharedPtr& rView)
  96 {
  97     cppcanvas::CustomSpriteSharedPtr sprite;
  98
  99     try
 100     {
 101         const css::geometry::IntegerSize2D spriteSize(mxIconBitmap->getSize());
 102         sprite = rView->createSprite(basegfx::B2DSize(spriteSize.Width, spriteSize.Height),
 103                                      1000.0); // sprite should be in front of all
 104         // other sprites
 105         css::rendering::ViewState viewState;
 106         canvas::tools::initViewState(viewState);
 107         css::rendering::RenderState renderState;
 108         canvas::tools::initRenderState(renderState);
 109         sprite->getContentCanvas()->getUNOCanvas()->drawBitmap(mxIconBitmap, viewState,
 110                                                                renderState);
 111
 112         sprite->setAlpha(0.9);
 113         sprite->movePixel(calcSpritePos(rView));
 114         sprite->show();
 115     }
 116     catch (css::uno::Exception&)
 117     {
 118         TOOLS_WARN_EXCEPTION("slideshow", "");
 119     }
 120
 121     maViews.emplace_back(rView, sprite);
 122 }
 123
 124 void SlideOverlayButton::viewRemoved(const UnoViewSharedPtr& rView)
 125 {
 126     maViews.erase(
 127         std::remove_if(maViews.begin(), maViews.end(),
 128                        [&rView](const ViewsVecT::value_type& cp) { return rView == cp.first; }),
 129         maViews.end());
 130 }
 131
 132 void SlideOverlayButton::viewChanged(const UnoViewSharedPtr& rView)
 133 {
 134     // find entry corresponding to modified view
 135     ViewsVecT::iterator aModifiedEntry(
 136         std::find_if(maViews.begin(), maViews.end(),
 137                      [&rView](const ViewsVecT::value_type& cp) { return rView == cp.first; }));
 138
 139     assert(aModifiedEntry != maViews.end());
 140     if (aModifiedEntry == maViews.end())
 141         return;
 142
 143     if (aModifiedEntry->second)
 144         aModifiedEntry->second->movePixel(calcSpritePos(aModifiedEntry->first));
 145 }
 146
 147 void SlideOverlayButton::viewsChanged()
 148 {
 149     // reposition sprites on all views
 150     for (const auto& rView : maViews)
 151     {
 152         if (rView.second)
 153             rView.second->movePixel(calcSpritePos(rView.first));
 154     }
 155 }
 156
 157 bool SlideOverlayButton::handleMousePressed(const css::awt::MouseEvent& /*e*/) { return false; }
 158
 159 bool SlideOverlayButton::handleMouseReleased(const css::awt::MouseEvent& e)
 160 {
 161     css::uno::Reference<css::presentation::XSlideShowView> view(e.Source,
 162                                                                 css::uno::UNO_QUERY_THROW);
 163     const basegfx::B2DPoint btnPnt(
 164         view->getCanvasArea().X + std::min(view->getCanvasArea().Width, mpPosition.X),
 165         view->getCanvasArea().Y
 166             + std::max(sal_Int32(0), view->getCanvasArea().Height - mxIconBitmap->getSize().Height
 167                                          - mpPosition.Y));
 168     const basegfx::B2DPoint clickPnt
 169         = mrEventMultiplexer.toNormalPoint(e.Source, basegfx::B2DPoint(e.X, e.Y));
 170     if (clickPnt.getX() > btnPnt.getX()
 171         && clickPnt.getX() < btnPnt.getX() + mxIconBitmap->getSize().Width
 172         && clickPnt.getY() > btnPnt.getY()
 173         && clickPnt.getY() < btnPnt.getY() + mxIconBitmap->getSize().Height)
 174     {
 175         mClickHandler(clickPnt);
 176         return true;
 177     }
 178     return false;
 179 }
 180
 181 bool SlideOverlayButton::handleMouseDragged(const css::awt::MouseEvent& /*e*/) { return false; }
 182
 183 bool SlideOverlayButton::handleMouseMoved(const css::awt::MouseEvent& /*e*/) { return false; }
 184
 185 } // namespace slideshow::internal
 186
 187 /* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */