sfx2/source/control/thumbnailviewitem.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 <sfx2/thumbnailviewitem.hxx>
  21
  22 #include <sfx2/thumbnailview.hxx>
  23 #include "thumbnailviewacc.hxx"
  24
  25 #include <basegfx/matrix/b2dhommatrixtools.hxx>
  26 #include <basegfx/range/b2drectangle.hxx>
  27 #include <basegfx/vector/b2dsize.hxx>
  28 #include <basegfx/polygon/b2dpolygon.hxx>
  29 #include <drawinglayer/attribute/fillgraphicattribute.hxx>
  30 #include <drawinglayer/primitive2d/fillgraphicprimitive2d.hxx>
  31 #include <drawinglayer/primitive2d/polygonprimitive2d.hxx>
  32 #include <drawinglayer/primitive2d/polypolygonprimitive2d.hxx>
  33 #include <drawinglayer/primitive2d/textlayoutdevice.hxx>
  34 #include <drawinglayer/primitive2d/textprimitive2d.hxx>
  35 #include <drawinglayer/processor2d/baseprocessor2d.hxx>
  36 #include <vcl/button.hxx>
  37 #include <vcl/graph.hxx>
  38 #include <vcl/svapp.hxx>
  39 #include <vcl/texteng.hxx>
  40
  41 using namespace basegfx;
  42 using namespace basegfx::tools;
  43 using namespace ::com::sun::star;
  44 using namespace drawinglayer::attribute;
  45 using namespace drawinglayer::primitive2d;
  46
  47 class ResizableMultiLineEdit : public VclMultiLineEdit
  48 {
  49     private:
  50         ThumbnailViewItem* mpItem;
  51         bool mbIsInGrabFocus;
  52
  53     public:
  54         ResizableMultiLineEdit (vcl::Window* pParent, ThumbnailViewItem* pItem);
  55
  56         void SetInGrabFocus(bool bInGrabFocus) { mbIsInGrabFocus = bInGrabFocus; }
  57
  58         virtual bool PreNotify(NotifyEvent& rNEvt) SAL_OVERRIDE;
  59         virtual void Modify() SAL_OVERRIDE;
  60 };
  61
  62 ResizableMultiLineEdit::ResizableMultiLineEdit (vcl::Window* pParent, ThumbnailViewItem* pItem) :
  63     VclMultiLineEdit (pParent, WB_CENTER | WB_BORDER),
  64     mpItem(pItem),
  65     mbIsInGrabFocus(false)
  66 {
  67 }
  68
  69 bool ResizableMultiLineEdit::PreNotify(NotifyEvent& rNEvt)
  70 {
  71     bool nDone = false;
  72     if( rNEvt.GetType() == MouseNotifyEvent::KEYINPUT )
  73     {
  74         const KeyEvent& rKEvt = *rNEvt.GetKeyEvent();
  75         vcl::KeyCode aCode = rKEvt.GetKeyCode();
  76         switch (aCode.GetCode())
  77         {
  78             case KEY_RETURN:
  79                 mpItem->setTitle( GetText() );
  80                 //fall-through
  81             case KEY_ESCAPE:
  82                 mpItem->setEditTitle(false);
  83                 nDone = true;
  84                 break;
  85             default:
  86                 break;
  87         }
  88     }
  89     else if ( rNEvt.GetType() == MouseNotifyEvent::LOSEFOCUS && !mbIsInGrabFocus )
  90     {
  91         mpItem->setTitle( GetText() );
  92         mpItem->setEditTitle(false, false);
  93     }
  94     return nDone || VclMultiLineEdit::PreNotify(rNEvt);
  95 }
  96
  97 void ResizableMultiLineEdit::Modify()
  98 {
  99     VclMultiLineEdit::Modify();
 100     mpItem->updateTitleEditSize();
 101 }
 102
 103 ThumbnailViewItem::ThumbnailViewItem(ThumbnailView &rView, sal_uInt16 nId)
 104     : mrParent(rView)
 105     , mnId(nId)
 106     , mbVisible(true)
 107     , mbSelected(false)
 108     , mbHover(false)
 109     , mpxAcc(NULL)
 110     , mbEditTitle(false)
 111     , mpTitleED(NULL)
 112     , maTextEditMaxArea()
 113 {
 114     mpTitleED = VclPtr<ResizableMultiLineEdit>::Create(&rView, this);
 115 }
 116
 117 ThumbnailViewItem::~ThumbnailViewItem()
 118 {
 119     mpTitleED.disposeAndClear();
 120     if( mpxAcc )
 121     {
 122         static_cast< ThumbnailViewItemAcc* >( mpxAcc->get() )->ParentDestroyed();
 123         delete mpxAcc;
 124     }
 125 }
 126
 127 void ThumbnailViewItem::show (bool bVisible)
 128 {
 129     mbVisible = bVisible;
 130     if (!mbVisible)
 131         mpTitleED->Show(false);
 132 }
 133
 134 void ThumbnailViewItem::setSelection (bool state)
 135 {
 136     mbSelected = state;
 137 }
 138
 139 void ThumbnailViewItem::setHighlight (bool state)
 140 {
 141     mbHover = state;
 142 }
 143
 144 Rectangle ThumbnailViewItem::updateHighlight(bool bVisible, const Point& rPoint)
 145 {
 146     bool bNeedsPaint = false;
 147
 148     if (bVisible && getDrawArea().IsInside(rPoint))
 149     {
 150         if (!isHighlighted())
 151             bNeedsPaint = true;
 152         setHighlight(true);
 153     }
 154     else
 155     {
 156         if (isHighlighted() || mpTitleED->SupportsDoubleBuffering())
 157             bNeedsPaint = true;
 158         setHighlight(false);
 159     }
 160
 161     if (bNeedsPaint)
 162         return getDrawArea();
 163
 164     return Rectangle();
 165 }
 166
 167 OUString ThumbnailViewItem::getHelpText() const
 168 {
 169     return maTitle;
 170 }
 171
 172 void ThumbnailViewItem::setEditTitle (bool edit, bool bChangeFocus)
 173 {
 174     mbEditTitle = edit;
 175     mpTitleED->Show(edit);
 176     if (edit)
 177     {
 178         mpTitleED->SetText(maTitle);
 179         updateTitleEditSize();
 180         static_cast<ResizableMultiLineEdit*>(mpTitleED.get())->SetInGrabFocus(true);
 181         mpTitleED->GrabFocus();
 182         static_cast<ResizableMultiLineEdit*>(mpTitleED.get())->SetInGrabFocus(false);
 183     }
 184     else if (bChangeFocus)
 185     {
 186         mrParent.GrabFocus();
 187     }
 188 }
 189
 190 Rectangle ThumbnailViewItem::getTextArea() const
 191 {
 192     Rectangle aTextArea(maTextEditMaxArea);
 193
 194     TextEngine aTextEngine;
 195     aTextEngine.SetMaxTextWidth(maDrawArea.getWidth());
 196     aTextEngine.SetText(maTitle);
 197
 198     long nTxtHeight = aTextEngine.GetTextHeight() + 6;
 199     if (nTxtHeight < aTextArea.GetHeight())
 200         aTextArea.SetSize(Size(aTextArea.GetWidth(), nTxtHeight));
 201
 202     return aTextArea;
 203 }
 204
 205 void ThumbnailViewItem::updateTitleEditSize()
 206 {
 207     Rectangle aTextArea = getTextArea();
 208     Point aPos = aTextArea.TopLeft();
 209     Size aSize = aTextArea.GetSize();
 210     mpTitleED->SetPosSizePixel(aPos, aSize);
 211 }
 212
 213 void ThumbnailViewItem::setTitle (const OUString& rTitle)
 214 {
 215     if (mrParent.renameItem(this, rTitle))
 216         maTitle = rTitle;
 217 }
 218
 219 uno::Reference< accessibility::XAccessible > ThumbnailViewItem::GetAccessible( bool bIsTransientChildrenDisabled )
 220 {
 221     if( !mpxAcc )
 222         mpxAcc = new uno::Reference< accessibility::XAccessible >( new ThumbnailViewItemAcc( this, bIsTransientChildrenDisabled ) );
 223
 224     return *mpxAcc;
 225 }
 226
 227 void ThumbnailViewItem::setDrawArea (const Rectangle &area)
 228 {
 229     maDrawArea = area;
 230 }
 231
 232 void ThumbnailViewItem::calculateItemsPosition (const long nThumbnailHeight, const long,
 233                                                 const long nPadding, sal_uInt32 nMaxTextLength,
 234                                                 const ThumbnailItemAttributes *pAttrs)
 235 {
 236     drawinglayer::primitive2d::TextLayouterDevice aTextDev;
 237     aTextDev.setFontAttribute(pAttrs->aFontAttr,
 238                               pAttrs->aFontSize.getX(), pAttrs->aFontSize.getY(),
 239                               com::sun::star::lang::Locale() );
 240
 241     Size aRectSize = maDrawArea.GetSize();
 242     Size aImageSize = maPreview1.GetSizePixel();
 243
 244     // Calculate thumbnail position
 245     Point aPos = maDrawArea.TopLeft();
 246     aPos.X() = maDrawArea.getX() + (aRectSize.Width()-aImageSize.Width())/2;
 247     aPos.Y() = maDrawArea.getY() + nPadding + (nThumbnailHeight-aImageSize.Height())/2;
 248     maPrev1Pos = aPos;
 249
 250     // Calculate text position
 251     aPos.Y() = maDrawArea.getY() + nThumbnailHeight + nPadding * 2;
 252     aPos.X() = maDrawArea.Left() + (aRectSize.Width() - aTextDev.getTextWidth(maTitle,0,nMaxTextLength))/2;
 253     maTextPos = aPos;
 254
 255     // Calculate the text edit max area
 256     aPos = Point(maDrawArea.getX() + nPadding, maTextPos.getY());
 257     Size aEditSize(maDrawArea.GetWidth() - nPadding * 2,
 258                    maDrawArea.Bottom() - maTextPos.Y());
 259     maTextEditMaxArea = Rectangle( aPos, aEditSize );
 260 }
 261
 262 void ThumbnailViewItem::setSelectClickHdl (const Link<> &link)
 263 {
 264     maClickHdl = link;
 265 }
 266
 267 void ThumbnailViewItem::Paint (drawinglayer::processor2d::BaseProcessor2D *pProcessor,
 268                                const ThumbnailItemAttributes *pAttrs)
 269 {
 270     BColor aFillColor = pAttrs->aFillColor;
 271     drawinglayer::primitive2d::Primitive2DSequence aSeq(4);
 272     double fTransparence = 0.0;
 273
 274     // Draw background
 275     if (mbSelected || mbHover)
 276         aFillColor = pAttrs->aHighlightColor;
 277
 278     if (mbHover)
 279         fTransparence = pAttrs->fHighlightTransparence;
 280
 281     sal_uInt32 nPrimitive = 0;
 282     aSeq[nPrimitive++] = drawinglayer::primitive2d::Primitive2DReference( new PolyPolygonSelectionPrimitive2D(
 283                                                B2DPolyPolygon(Polygon(maDrawArea, THUMBNAILVIEW_ITEM_CORNER, THUMBNAILVIEW_ITEM_CORNER).getB2DPolygon()),
 284                                                aFillColor,
 285                                                fTransparence,
 286                                                0.0,
 287                                                true));
 288
 289     // Draw thumbnail
 290     Point aPos = maPrev1Pos;
 291     Size aImageSize = maPreview1.GetSizePixel();
 292
 293     aSeq[nPrimitive++] = drawinglayer::primitive2d::Primitive2DReference( new FillGraphicPrimitive2D(
 294                                         createTranslateB2DHomMatrix(aPos.X(),aPos.Y()),
 295                                         FillGraphicAttribute(Graphic(maPreview1),
 296                                                             B2DRange(
 297                                                                 B2DPoint(0,0),
 298                                                                 B2DPoint(aImageSize.Width(),aImageSize.Height())),
 299                                                             false)
 300                                         ));
 301
 302     // draw thumbnail borders
 303     float fWidth = aImageSize.Width() - 1;
 304     float fHeight = aImageSize.Height() - 1;
 305     float fPosX = maPrev1Pos.getX();
 306     float fPosY = maPrev1Pos.getY();
 307
 308     B2DPolygon aBounds;
 309     aBounds.append(B2DPoint(fPosX,fPosY));
 310     aBounds.append(B2DPoint(fPosX+fWidth,fPosY));
 311     aBounds.append(B2DPoint(fPosX+fWidth,fPosY+fHeight));
 312     aBounds.append(B2DPoint(fPosX,fPosY+fHeight));
 313     aBounds.setClosed(true);
 314
 315     aSeq[nPrimitive++] = drawinglayer::primitive2d::Primitive2DReference(createBorderLine(aBounds));
 316
 317     // Draw text below thumbnail
 318     addTextPrimitives(maTitle, pAttrs, maTextPos, aSeq);
 319
 320     pProcessor->process(aSeq);
 321 }
 322
 323 void ThumbnailViewItem::addTextPrimitives (const OUString& rText, const ThumbnailItemAttributes *pAttrs, Point aPos, drawinglayer::primitive2d::Primitive2DSequence& rSeq)
 324 {
 325     drawinglayer::primitive2d::TextLayouterDevice aTextDev;
 326
 327     aPos.setY(aPos.getY() + aTextDev.getTextHeight());
 328
 329     OUString aText (rText);
 330
 331     TextEngine aTextEngine;
 332     aTextEngine.SetMaxTextWidth(maDrawArea.getWidth());
 333     aTextEngine.SetText(rText);
 334
 335     sal_Int32 nPrimitives = rSeq.getLength();
 336     rSeq.realloc(nPrimitives + aTextEngine.GetLineCount(0));
 337
 338     // Create the text primitives
 339     sal_uInt16 nLineStart = 0;
 340     for (sal_uInt16 i=0; i < aTextEngine.GetLineCount(0); ++i)
 341     {
 342         sal_uInt16 nLineLength = aTextEngine.GetLineLen(0, i);
 343         double nLineWidth = aTextDev.getTextWidth (aText, nLineStart, nLineLength);
 344
 345         bool bTooLong = (aPos.getY() + aTextEngine.GetCharHeight()) > maDrawArea.Bottom();
 346         if (bTooLong && (nLineLength + nLineStart) < rText.getLength())
 347         {
 348             // Add the '...' to the last line to show, even though it may require to shorten the line
 349             double nDotsWidth = aTextDev.getTextWidth(OUString("..."),0,3);
 350
 351             sal_uInt16 nLength = nLineLength - 1;
 352             while ( nDotsWidth + aTextDev.getTextWidth(aText, nLineStart, nLength) > maDrawArea.getWidth() && nLength > 0)
 353             {
 354                 --nLength;
 355             }
 356
 357             aText = aText.copy(0, nLineStart+nLength);
 358             aText += "...";
 359             nLineLength = nLength + 3;
 360         }
 361
 362         double nLineX = maDrawArea.Left() + (maDrawArea.getWidth() - nLineWidth) / 2.0;
 363
 364         basegfx::B2DHomMatrix aTextMatrix( createScaleTranslateB2DHomMatrix(
 365                     pAttrs->aFontSize.getX(), pAttrs->aFontSize.getY(),
 366                     nLineX, double( aPos.Y() ) ) );
 367
 368         // setup color
 369         BColor aTextColor = pAttrs->aTextColor;
 370         if (mbSelected || mbHover)
 371             aTextColor = pAttrs->aHighlightTextColor;
 372
 373         rSeq[nPrimitives++] = drawinglayer::primitive2d::Primitive2DReference(
 374                     new TextSimplePortionPrimitive2D(aTextMatrix,
 375                                                      aText, nLineStart, nLineLength,
 376                                                      std::vector<double>(),
 377                                                      pAttrs->aFontAttr,
 378                                                      com::sun::star::lang::Locale(),
 379                                                      aTextColor));
 380         nLineStart += nLineLength;
 381         aPos.setY(aPos.getY() + aTextEngine.GetCharHeight());
 382
 383         if (bTooLong)
 384             break;
 385     }
 386 }
 387
 388 drawinglayer::primitive2d::PolygonHairlinePrimitive2D*
 389 ThumbnailViewItem::createBorderLine (const basegfx::B2DPolygon& rPolygon)
 390 {
 391     return new PolygonHairlinePrimitive2D(rPolygon, Color(128, 128, 128).getBColor());
 392 }
 393
 394 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */