StyleManager & StylePreviewRenderer + common implementation

StyleManager is a new class responsible to handle document styles.
The current implementation has only the responsibility to provide
a implementation of StylePreviewReneder, but the idea is to move
all style related functionallity to this class (and relieve the
SfxObjectShell a bit). CommonStyleMAnager is the common impl.

StylePreviewRenderer is responsible to render a preview of a style.
As styles can be handled differently by each component it is
possible to provide component specific StylePreviewRendered, but
currently only the common one is implemented and used by sw.

Change-Id: Id271485f571a777a3e94f855d3c614a2efc14628

2 files changed, 250 insertions, 0 deletions

diff --git a/svx/source/styles/CommonStyleManager.cxx b/svx/source/styles/CommonStyleManager.cxx
new file mode 100644
index 000000000000..4b3b6d1a617a
--- /dev/null
+++ b/svx/source/styles/CommonStyleManager.cxx
@@ -0,0 +1,41 @@
+/* -*- 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/.
+ *
+ */
+
+#include <svx/CommonStyleManager.hxx>
+#include <svx/CommonStylePreviewRenderer.hxx>
+
+namespace svx
+{
+
+sfx2::StylePreviewRenderer* CommonStyleManager::CreateStylePreviewRenderer(
+                                            OutputDevice& rOutputDev, OUString sName,
+                                            SfxStyleFamily eFamily, long nMaxHeight)
+{
+    SfxStyleSheetBasePool* pPool = mrShell.GetStyleSheetPool();
+    if (!pPool)
+        return nullptr;
+
+    pPool->SetSearchMask(eFamily, SFXSTYLEBIT_ALL);
+    SfxStyleSheetBase* pStyle = nullptr;
+    pStyle = pPool->First();
+
+    while (pStyle)
+    {
+        if (sName == pStyle->GetName())
+            return new CommonStylePreviewRenderer(mrShell, rOutputDev, pStyle, nMaxHeight);
+        pStyle = pPool->Next();
+    }
+
+    return nullptr;
+}
+
+} // end svx namespace
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/svx/source/styles/CommonStylePreviewRenderer.cxx b/svx/source/styles/CommonStylePreviewRenderer.cxx
new file mode 100644
index 000000000000..9ef4ffdc64d2
--- /dev/null
+++ b/svx/source/styles/CommonStylePreviewRenderer.cxx
@@ -0,0 +1,209 @@
+/* -*- 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/.
+ *
+ */
+
+#include <svx/CommonStylePreviewRenderer.hxx>
+
+#include <sfx2/objsh.hxx>
+#include <svl/style.hxx>
+#include <svl/itemset.hxx>
+
+#include <com/sun/star/drawing/FillStyle.hpp>
+#include <svx/xdef.hxx>
+#include <svx/xfillit0.hxx>
+#include <svx/xflclit.hxx>
+#include <svx/xcolit.hxx>
+#include <editeng/fontitem.hxx>
+#include <editeng/fhgtitem.hxx>
+#include <editeng/boxitem.hxx>
+#include <editeng/charreliefitem.hxx>
+#include <editeng/contouritem.hxx>
+#include <editeng/colritem.hxx>
+#include <editeng/crossedoutitem.hxx>
+#include <editeng/emphasismarkitem.hxx>
+#include <editeng/flstitem.hxx>
+#include <editeng/lineitem.hxx>
+#include <editeng/postitem.hxx>
+#include <editeng/shdditem.hxx>
+#include <editeng/udlnitem.hxx>
+#include <editeng/wghtitem.hxx>
+#include <editeng/svxfont.hxx>
+#include <editeng/cmapitem.hxx>
+
+#include <editeng/editids.hrc>
+
+using namespace css;
+
+namespace svx
+{
+
+CommonStylePreviewRenderer::CommonStylePreviewRenderer(
+                                const SfxObjectShell& rShell, OutputDevice& rOutputDev,
+                                SfxStyleSheetBase* pStyle, long nMaxHeight)
+    : StylePreviewRenderer(rShell, rOutputDev, pStyle, nMaxHeight)
+    , maFont()
+    , maFontColor(COL_AUTO)
+    , maBackgroundColor(COL_AUTO)
+    , maPixelSize()
+    , maStyleName(mpStyle->GetName())
+{
+}
+
+CommonStylePreviewRenderer::~CommonStylePreviewRenderer()
+{}
+
+bool CommonStylePreviewRenderer::recalculate()
+{
+    const SfxItemSet& aItemSet = mpStyle->GetItemSet();
+
+    maFont = SvxFont();
+
+    const SfxPoolItem* pItem;
+
+    if ((pItem = aItemSet.GetItem(SID_ATTR_CHAR_WEIGHT)) != nullptr)
+    {
+        maFont.SetWeight(static_cast<const SvxWeightItem*>(pItem)->GetWeight());
+    }
+    if ((pItem = aItemSet.GetItem(SID_ATTR_CHAR_POSTURE)) != nullptr)
+    {
+        maFont.SetItalic(static_cast<const SvxPostureItem*>(pItem)->GetPosture());
+    }
+    if ((pItem = aItemSet.GetItem(SID_ATTR_CHAR_CONTOUR)) != nullptr)
+    {
+        maFont.SetOutline(static_cast< const SvxContourItem*>(pItem)->GetValue());
+    }
+    if ((pItem = aItemSet.GetItem(SID_ATTR_CHAR_SHADOWED)) != nullptr)
+    {
+        maFont.SetShadow(static_cast<const SvxShadowedItem*>(pItem)->GetValue());
+    }
+    if ((pItem = aItemSet.GetItem(SID_ATTR_CHAR_RELIEF)) != nullptr)
+    {
+        maFont.SetRelief(static_cast<FontRelief>(static_cast<const SvxCharReliefItem*>(pItem)->GetValue()));
+    }
+    if ((pItem = aItemSet.GetItem(SID_ATTR_CHAR_UNDERLINE)) != nullptr)
+    {
+        maFont.SetUnderline(static_cast< const SvxUnderlineItem*>(pItem)->GetLineStyle());
+    }
+    if ((pItem = aItemSet.GetItem(SID_ATTR_CHAR_OVERLINE)) != nullptr)
+    {
+        maFont.SetOverline(static_cast<FontUnderline>(static_cast<const SvxOverlineItem*>(pItem)->GetValue()));
+    }
+    if ((pItem = aItemSet.GetItem(SID_ATTR_CHAR_STRIKEOUT)) != nullptr)
+    {
+        maFont.SetStrikeout(static_cast<const SvxCrossedOutItem*>(pItem)->GetStrikeout());
+    }
+    if ((pItem = aItemSet.GetItem(SID_ATTR_CHAR_CASEMAP)) != nullptr)
+    {
+        maFont.SetCaseMap(static_cast<const SvxCaseMapItem*>(pItem)->GetCaseMap());
+    }
+    if ((pItem = aItemSet.GetItem(SID_ATTR_CHAR_EMPHASISMARK)) != nullptr)
+    {
+        maFont.SetEmphasisMark(static_cast<const SvxEmphasisMarkItem*>(pItem)->GetEmphasisMark());
+    }
+    if ((pItem = aItemSet.GetItem(SID_ATTR_CHAR_COLOR)) != nullptr)
+    {
+        maFontColor = Color(static_cast<const SvxColorItem*>(pItem)->GetValue());
+    }
+
+    if (mpStyle->GetFamily() == SFX_STYLE_FAMILY_PARA)
+    {
+        if ((pItem = aItemSet.GetItem(XATTR_FILLSTYLE)) != nullptr)
+        {
+            sal_uInt16 aFillStyle = static_cast<const XFillStyleItem*>(pItem)->GetValue();
+            if (aFillStyle == drawing::FillStyle_SOLID)
+            {
+                if ((pItem = aItemSet.GetItem(XATTR_FILLCOLOR)) != nullptr)
+                {
+                    maBackgroundColor = Color(static_cast<const XFillColorItem*>(pItem)->GetColorValue());
+                }
+            }
+        }
+    }
+
+    if ((pItem = aItemSet.GetItem(SID_ATTR_CHAR_FONT)) != nullptr)
+    {
+        const SvxFontItem* pFontItem = static_cast<const SvxFontItem*>(pItem);
+        maFont.SetName(pFontItem->GetFamilyName());
+        maFont.SetStyleName(pFontItem->GetStyleName());
+    }
+    else
+    {
+        return false;
+    }
+
+    if ((pItem = aItemSet.GetItem(SID_ATTR_CHAR_FONTHEIGHT)) != nullptr)
+    {
+        const SvxFontHeightItem* pFontHeightItem = static_cast<const SvxFontHeightItem*>(pItem);
+        Size aFontSize(0, pFontHeightItem->GetHeight());
+        maPixelSize = Size(mrOutputDev.LogicToPixel(aFontSize, mrShell.GetMapUnit()));
+        maFont.SetSize(maPixelSize);
+
+        vcl::Font aOldFont(mrOutputDev.GetFont());
+
+        mrOutputDev.SetFont(maFont);
+        Rectangle aTextRect;
+        mrOutputDev.GetTextBoundRect(aTextRect, mpStyle->GetName());
+        if (aTextRect.Bottom() > mnMaxHeight)
+        {
+            double ratio = double(mnMaxHeight) / aTextRect.Bottom();
+            maPixelSize.Width() *= ratio;
+            maPixelSize.Height() *= ratio;
+            maFont.SetSize(maPixelSize);
+        }
+        mrOutputDev.SetFont(aOldFont);
+    }
+    else
+    {
+        return false;
+    }
+
+    return true;
+}
+
+Size CommonStylePreviewRenderer::getRenderSize()
+{
+    maPixelSize = maFont.GetTxtSize(&mrOutputDev, maStyleName);
+    if (maPixelSize.Height() > mnMaxHeight)
+        maPixelSize.Height() = mnMaxHeight;
+    return maPixelSize;
+}
+
+bool CommonStylePreviewRenderer::render(const Rectangle& aRectangle)
+{
+    // setup the device & draw
+    vcl::Font aOldFont(mrOutputDev.GetFont());
+    Color aOldColor(mrOutputDev.GetTextColor());
+    Color aOldFillColor(mrOutputDev.GetFillColor());
+
+    if (maBackgroundColor != COL_AUTO)
+    {
+        mrOutputDev.SetFillColor(maBackgroundColor);
+        mrOutputDev.DrawRect(aRectangle);
+    }
+
+    mrOutputDev.SetFont(maFont);
+    if (maFontColor != COL_AUTO)
+        mrOutputDev.SetTextColor(maFontColor);
+
+    Point aFontDrawPosition = aRectangle.TopLeft();
+    if (aRectangle.GetHeight() > maPixelSize.Height())
+        aFontDrawPosition.Y() += ( aRectangle.GetHeight() - maPixelSize.Height() ) / 2;
+
+    mrOutputDev.DrawText(aFontDrawPosition, maStyleName);
+
+    mrOutputDev.SetFillColor(aOldFillColor);
+    mrOutputDev.SetTextColor(aOldColor);
+    mrOutputDev.SetFont(aOldFont);
+
+    return true;
+}
+
+} // end svx namespace
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */