sc: add theme colors to the color picker

Change-Id: Iae8f502a24187f4d41f60fbb727066f214d1cf70
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/151449
Tested-by: Jenkins
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>

sc/Library_sc.mk

@@ -72,6 +72,7 @@ $(eval $(call gb_Library_use_libraries,sc,\
     dbtools \
     drawinglayercore \
     drawinglayer \
+    docmodel \
     editeng \
     for \
     forui \

sc/Library_scui.mk

@@ -50,6 +50,7 @@ $(eval $(call gb_Library_use_libraries,scui,\
 	comphelper \
 	cppu \
 	cppuhelper \
+	docmodel \
 	editeng \
 	for \
 	forui \

sc/source/ui/docshell/docsh.cxx

@@ -79,6 +79,9 @@
 #include <sot/formats.hxx>
 #include <svx/compatflags.hxx>
 #include <svx/dialogs.hrc>
+#include <svx/svdpagv.hxx>
+#include <svx/svdpage.hxx>
+#include <docmodel/theme/Theme.hxx>
 
 #include <formulacell.hxx>
 #include <global.hxx>
@@ -215,6 +218,26 @@ std::set<Color> ScDocShell::GetDocColors()
     return m_pDocument->GetDocColors();
 }
 
+std::vector<Color> ScDocShell::GetThemeColors()
+{
+    ScTabViewShell* pSh = GetBestViewShell();
+    if (!pSh)
+        return {};
+    ScTabView* pTabView = pSh->GetViewData().GetView();
+    if (!pTabView)
+        return {};
+    ScDrawView* pView = pTabView->GetScDrawView();
+    if (!pView)
+        return {};
+    SdrPage* pPage = pView->GetSdrPageView()->GetPage();
+    if (!pPage)
+        return {};
+    auto const& pTheme = pPage->getSdrPageProperties().GetTheme();
+    if (!pTheme)
+        return {};
+    return pTheme->GetColors();
+}
+
 void ScDocShell::DoEnterHandler()
 {
     ScTabViewShell* pViewSh = ScTabViewShell::GetActiveViewShell();

sc/source/ui/inc/docsh.hxx

@@ -181,6 +181,7 @@ public:
                                bool bTemplate = false ) const override;
 
     virtual std::set<Color> GetDocColors() override;
+    virtual std::vector<Color> GetThemeColors() override;
 
     virtual bool    InitNew( const css::uno::Reference< css::embed::XStorage >& ) override;
     virtual bool    Load( SfxMedium& rMedium ) override;

sc/ucalc_setup.mk

@@ -47,6 +47,7 @@ $(eval $(call gb_CppunitTest_use_libraries,sc_ucalc$(1), \
     dbtools \
     drawinglayer \
     drawinglayercore \
+    docmodel \
     editeng \
     for \
     forui \