/**************************************************************
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
 *************************************************************/



#include "precompiled_sd.hxx"

#include "view/SlsTheme.hxx"
#include "SlsResource.hxx"
#include "controller/SlsProperties.hxx"
#include "sdresid.hxx"
#include <tools/color.hxx>
#include <vcl/outdev.hxx>
#include <vcl/image.hxx>
#include <vcl/svapp.hxx>
#include <svtools/colorcfg.hxx>

namespace sd { namespace slidesorter { namespace view {

const static ColorData Black = 0x000000;
const static ColorData White = 0xffffff;



ColorData ChangeLuminance (const ColorData aColorData, const int nValue)
{
	Color aColor (aColorData);
	if (nValue > 0)
		aColor.IncreaseLuminance(nValue);
	else
		aColor.DecreaseLuminance(-nValue);
	return aColor.GetColor();
}

ColorData HGBAdapt (
	const ColorData aColorData,
	const sal_Int32 nNewSaturation,
	const sal_Int32 nNewBrightness)
{
	sal_uInt16 nHue (0);
	sal_uInt16 nSaturation (0);
	sal_uInt16 nBrightness (0);
	Color(aColorData).RGBtoHSB(nHue, nSaturation, nBrightness);
	return Color::HSBtoRGB(
		nHue,
		nNewSaturation>=0 ? nNewSaturation : nSaturation,
		nNewBrightness>=0 ? nNewBrightness : nBrightness);
}




Theme::Theme (const ::boost::shared_ptr<controller::Properties>& rpProperties)
	: mbIsHighContrastMode(false),
	  maBackgroundColor(rpProperties->GetBackgroundColor().GetColor()),
	  maPageBackgroundColor(COL_WHITE),
	  maGradients(),
	  maIcons(),
	  maColor(),
	  maIntegerValues()
{
	{
		LocalResource aResource (RID_SLIDESORTER_ICONS);

		maStrings.resize(_StringType_Size_);
		maStrings[String_DragAndDropPages] = String(SdResId(STRING_DRAG_AND_DROP_PAGES));
		maStrings[String_DragAndDropSlides] = String(SdResId(STRING_DRAG_AND_DROP_SLIDES));
		maStrings[String_Command1] = String(SdResId(STRING_COMMAND1));
		maStrings[String_Command2] = String(SdResId(STRING_COMMAND2_A));
		maStrings[String_Command2B] = String(SdResId(STRING_COMMAND2_B));
		maStrings[String_Command3] = String(SdResId(STRING_COMMAND3));

		maColor.resize(_ColorType_Size_);
		maColor[Color_Background] = maBackgroundColor;
		maColor[Color_ButtonBackground] = Black;
		maColor[Color_ButtonText] = 0xc0c0c0;
		maColor[Color_ButtonTextHover] = White;
		maColor[Color_PageNumberDefault] = 0x0808080;
		maColor[Color_PageNumberHover] = 0x4c4c4c;
		maColor[Color_PageNumberHighContrast] = White;
		maColor[Color_PageNumberBrightBackground] = 0x333333;
		maColor[Color_PageNumberDarkBackground] = 0xcccccc;
		maColor[Color_PreviewBorder] = 0x949599;

		maIntegerValues.resize(_IntegerValueType_Size_);
		maIntegerValues[Integer_ButtonCornerRadius] = 3;
		maIntegerValues[Integer_ButtonMaxAlpha] = 0;
		maIntegerValues[Integer_ButtonBarMaxAlpha] = 0;
		maIntegerValues[Integer_ButtonPaintType] = 1;
		maIntegerValues[Integer_ButtonBorder] = 4;
		maIntegerValues[Integer_ButtonGap] = 0;
		maIntegerValues[Integer_ButtonFadeInDelay] = 800;
		maIntegerValues[Integer_ButtonFadeInDuration] = 100;
		maIntegerValues[Integer_ButtonFadeOutDelay] = 0;
		maIntegerValues[Integer_ButtonFadeOutDuration] = 100;
		maIntegerValues[Integer_ToolTipDelay] = 1000;
		maIntegerValues[Integer_FocusIndicatorWidth] = 3;
	}

	Update(rpProperties);
}




void Theme::Update (const ::boost::shared_ptr<controller::Properties>& rpProperties)
{
	const bool bSavedHighContrastMode (mbIsHighContrastMode);
	mbIsHighContrastMode = rpProperties->IsHighContrastModeActive();

	// Set up colors.
	maBackgroundColor = rpProperties->GetBackgroundColor().GetColor();
	maPageBackgroundColor = svtools::ColorConfig().GetColorValue(svtools::DOCCOLOR).nColor;

	maColor[Color_Background] = maBackgroundColor;

	maGradients.resize(_GradientColorType_Size_);

	maColor[Color_Background] = maBackgroundColor;
	const ColorData aSelectionColor (rpProperties->GetSelectionColor().GetColor());
	maColor[Color_Selection] = aSelectionColor;
	if (Color(aSelectionColor).IsBright())
		maColor[Color_PageCountFontColor] = Black;
	else
		maColor[Color_PageCountFontColor] = White;

	// Set up gradients.
	SetGradient(Gradient_SelectedPage, aSelectionColor, 50, 50, +100,+100, +50,+25);
	SetGradient(Gradient_MouseOverPage, aSelectionColor, 75, 75, +100,+100, +50,+25);
	SetGradient(Gradient_SelectedAndFocusedPage, aSelectionColor, 50, 50, +100,+100, -50,-75);
	SetGradient(Gradient_MouseOverSelectedAndFocusedPage, aSelectionColor, 75, 75, +100,+100, -50,-75);
	SetGradient(Gradient_FocusedPage, aSelectionColor, -1,-1, 0,0, -50,-75);

	SetGradient(Gradient_ButtonBackground, Black, -1,-1, 0,0, 0,0);
	SetGradient(Gradient_NormalPage, maBackgroundColor, -1,-1, 0,0, 0,0);

	// The focused gradient needs special handling because its fill color is
	// like that of the NormalPage gradient.
	GetGradient(Gradient_FocusedPage).maFillColor1 = GetGradient(Gradient_NormalPage).maFillColor1;
	GetGradient(Gradient_FocusedPage).maFillColor2 = GetGradient(Gradient_NormalPage).maFillColor2;

	// Set up icons.
	if (bSavedHighContrastMode != mbIsHighContrastMode || maIcons.empty())
	{
		LocalResource aResource (RID_SLIDESORTER_ICONS);

		maIcons.resize(_IconType_Size_);
		if (mbIsHighContrastMode)
		{
			InitializeIcon(Icon_RawShadow, IMAGE_SHADOW);
			InitializeIcon(Icon_RawInsertShadow, IMAGE_INSERT_SHADOW);
			InitializeIcon(Icon_HideSlideOverlay, IMAGE_HIDE_SLIDE_OVERLAY);

			InitializeIcon(Icon_ButtonBarLarge, IMAGE_BUTTONBAR_LARGE_HC);
			InitializeIcon(Icon_ButtonBarMedium, IMAGE_BUTTONBAR_MEDIUM_HC);
			InitializeIcon(Icon_ButtonBarSmall, IMAGE_BUTTONBAR_SMALL_HC);

			InitializeIcon(Icon_Command1Large, IMAGE_COMMAND1_LARGE_HC);
			InitializeIcon(Icon_Command1LargeHover, IMAGE_COMMAND1_LARGE_HOVER_HC);
			InitializeIcon(Icon_Command1Medium, IMAGE_COMMAND1_MEDIUM_HC);
			InitializeIcon(Icon_Command1MediumHover, IMAGE_COMMAND1_MEDIUM_HOVER_HC);
			InitializeIcon(Icon_Command1Small, IMAGE_COMMAND1_SMALL_HC);
			InitializeIcon(Icon_Command1SmallHover, IMAGE_COMMAND1_SMALL_HOVER_HC);

			InitializeIcon(Icon_Command2Large, IMAGE_COMMAND2_LARGE_HC);
			InitializeIcon(Icon_Command2LargeHover, IMAGE_COMMAND2_LARGE_HOVER_HC);
			InitializeIcon(Icon_Command2Medium, IMAGE_COMMAND2_MEDIUM_HC);
			InitializeIcon(Icon_Command2MediumHover, IMAGE_COMMAND2_MEDIUM_HOVER_HC);
			InitializeIcon(Icon_Command2Small, IMAGE_COMMAND2_SMALL_HC);
			InitializeIcon(Icon_Command2SmallHover, IMAGE_COMMAND2_SMALL_HOVER_HC);

			InitializeIcon(Icon_Command2BLarge, IMAGE_COMMAND2B_LARGE_HC);
			InitializeIcon(Icon_Command2BLargeHover, IMAGE_COMMAND2B_LARGE_HOVER_HC);
			InitializeIcon(Icon_Command2BMedium, IMAGE_COMMAND2B_MEDIUM_HC);
			InitializeIcon(Icon_Command2BMediumHover, IMAGE_COMMAND2B_MEDIUM_HOVER_HC);
			InitializeIcon(Icon_Command2BSmall, IMAGE_COMMAND2B_SMALL_HC);
			InitializeIcon(Icon_Command2BSmallHover, IMAGE_COMMAND2B_SMALL_HOVER_HC);

			InitializeIcon(Icon_Command3Large, IMAGE_COMMAND3_LARGE_HC);
			InitializeIcon(Icon_Command3LargeHover, IMAGE_COMMAND3_LARGE_HOVER_HC);
			InitializeIcon(Icon_Command3Medium, IMAGE_COMMAND3_SMALL_HC);
			InitializeIcon(Icon_Command3MediumHover, IMAGE_COMMAND3_SMALL_HOVER_HC);
			InitializeIcon(Icon_Command3Small, IMAGE_COMMAND3_SMALL_HC);
			InitializeIcon(Icon_Command3SmallHover, IMAGE_COMMAND3_SMALL_HOVER_HC);
		}
		else
		{
			InitializeIcon(Icon_RawShadow, IMAGE_SHADOW);
			InitializeIcon(Icon_RawInsertShadow, IMAGE_INSERT_SHADOW);
			InitializeIcon(Icon_HideSlideOverlay, IMAGE_HIDE_SLIDE_OVERLAY);

			InitializeIcon(Icon_ButtonBarLarge, IMAGE_BUTTONBAR_LARGE);
			InitializeIcon(Icon_ButtonBarMedium, IMAGE_BUTTONBAR_MEDIUM);
			InitializeIcon(Icon_ButtonBarSmall, IMAGE_BUTTONBAR_SMALL);

			InitializeIcon(Icon_Command1Large, IMAGE_COMMAND1_LARGE);
			InitializeIcon(Icon_Command1LargeHover, IMAGE_COMMAND1_LARGE_HOVER);
			InitializeIcon(Icon_Command1Medium, IMAGE_COMMAND1_MEDIUM);
			InitializeIcon(Icon_Command1MediumHover, IMAGE_COMMAND1_MEDIUM_HOVER);
			InitializeIcon(Icon_Command1Small, IMAGE_COMMAND1_SMALL);
			InitializeIcon(Icon_Command1SmallHover, IMAGE_COMMAND1_SMALL_HOVER);

			InitializeIcon(Icon_Command2Large, IMAGE_COMMAND2_LARGE);
			InitializeIcon(Icon_Command2LargeHover, IMAGE_COMMAND2_LARGE_HOVER);
			InitializeIcon(Icon_Command2Medium, IMAGE_COMMAND2_MEDIUM);
			InitializeIcon(Icon_Command2MediumHover, IMAGE_COMMAND2_MEDIUM_HOVER);
			InitializeIcon(Icon_Command2Small, IMAGE_COMMAND2_SMALL);
			InitializeIcon(Icon_Command2SmallHover, IMAGE_COMMAND2_SMALL_HOVER);

			InitializeIcon(Icon_Command2BLarge, IMAGE_COMMAND2B_LARGE);
			InitializeIcon(Icon_Command2BLargeHover, IMAGE_COMMAND2B_LARGE_HOVER);
			InitializeIcon(Icon_Command2BMedium, IMAGE_COMMAND2B_MEDIUM);
			InitializeIcon(Icon_Command2BMediumHover, IMAGE_COMMAND2B_MEDIUM_HOVER);
			InitializeIcon(Icon_Command2BSmall, IMAGE_COMMAND2B_SMALL);
			InitializeIcon(Icon_Command2BSmallHover, IMAGE_COMMAND2B_SMALL_HOVER);

			InitializeIcon(Icon_Command3Large, IMAGE_COMMAND3_LARGE);
			InitializeIcon(Icon_Command3LargeHover, IMAGE_COMMAND3_LARGE_HOVER);
			InitializeIcon(Icon_Command3Medium, IMAGE_COMMAND3_MEDIUM);
			InitializeIcon(Icon_Command3MediumHover, IMAGE_COMMAND3_MEDIUM_HOVER);
			InitializeIcon(Icon_Command3Small, IMAGE_COMMAND3_SMALL);
			InitializeIcon(Icon_Command3SmallHover, IMAGE_COMMAND3_SMALL_HOVER);
		}
		InitializeIcon(Icon_FocusBorder, IMAGE_FOCUS_BORDER);
	}
}




::boost::shared_ptr<Font> Theme::GetFont (
	const FontType eType,
	const OutputDevice& rDevice)
{
	::boost::shared_ptr<Font> pFont;

	switch (eType)
	{
		case Font_PageNumber:
			pFont.reset(new Font(Application::GetSettings().GetStyleSettings().GetAppFont()));
			pFont->SetTransparent(sal_True);
			pFont->SetWeight(WEIGHT_BOLD);
			break;

		case Font_PageCount:
			pFont.reset(new Font(Application::GetSettings().GetStyleSettings().GetAppFont()));
			pFont->SetTransparent(sal_True);
			pFont->SetWeight(WEIGHT_NORMAL);
			{
				const Size aSize (pFont->GetSize());
				pFont->SetSize(Size(aSize.Width()*5/3, aSize.Height()*5/3));
			}
			break;

		case Font_Button:
			pFont.reset(new Font(Application::GetSettings().GetStyleSettings().GetAppFont()));
			pFont->SetTransparent(sal_True);
			pFont->SetWeight(WEIGHT_BOLD);
			{
				const Size aSize (pFont->GetSize());
				pFont->SetSize(Size(aSize.Width()*4/3, aSize.Height()*4/3));
			}
			break;
	}

	if (pFont)
	{
		// Transform the point size to pixel size.
		const MapMode aFontMapMode (MAP_POINT);
		const Size aFontSize (rDevice.LogicToPixel(pFont->GetSize(), aFontMapMode));

		// Transform the font size to the logical coordinates of the device.
		pFont->SetSize(rDevice.PixelToLogic(aFontSize));
	}

	return pFont;
}




ColorData Theme::GetColor (const ColorType eType)
{
	if (eType>=0 && sal_uInt32(eType)<maColor.size())
		return maColor[eType];
	else
		return 0;
}




void Theme::SetColor (
	const ColorType eType,
	const ColorData aData)
{
	if (eType>=0 && sal_uInt32(eType)<maColor.size())
		maColor[eType] = aData;
}




ColorData Theme::GetGradientColor (
	const GradientColorType eType,
	const GradientColorClass eClass)
{
	GradientDescriptor& rDescriptor (GetGradient(eType));

	switch (eClass)
	{
		case Border1: return rDescriptor.maBorderColor1;
		case Border2: return rDescriptor.maBorderColor2;
		case Fill1: return rDescriptor.maFillColor1;
		case Fill2: return rDescriptor.maFillColor2;
		default: OSL_ASSERT(false); // fall through
		case Base: return rDescriptor.maBaseColor;
	}
}




sal_Int32 Theme::GetGradientOffset (
	const GradientColorType eType,
	const GradientColorClass eClass)
{
	GradientDescriptor& rDescriptor (GetGradient(eType));

	switch (eClass)
	{
		case Border1: return rDescriptor.mnBorderOffset1;
		case Border2: return rDescriptor.mnBorderOffset2;
		case Fill1: return rDescriptor.mnFillOffset1;
		case Fill2: return rDescriptor.mnFillOffset2;
		default: OSL_ASSERT(false); // fall through
		case Base: return 0;
	}
}




void Theme::SetGradient (
	const GradientColorType eType,
	const ColorData aBaseColor,
	const sal_Int32 nSaturationOverride,
	const sal_Int32 nBrightnessOverride,
	const sal_Int32 nFillStartOffset,
	const sal_Int32 nFillEndOffset,
	const sal_Int32 nBorderStartOffset,
	const sal_Int32 nBorderEndOffset)
{
	GradientDescriptor& rGradient (GetGradient(eType));

	rGradient.maBaseColor = aBaseColor;

	rGradient.mnSaturationOverride = nSaturationOverride;
	rGradient.mnBrightnessOverride = nBrightnessOverride;
	const ColorData aColor (nSaturationOverride>=0 || nBrightnessOverride>=0
		? HGBAdapt(aBaseColor, nSaturationOverride, nBrightnessOverride)
		: aBaseColor);

	rGradient.maFillColor1 = ChangeLuminance(aColor, nFillStartOffset);
	rGradient.maFillColor2 = ChangeLuminance(aColor, nFillEndOffset);
	rGradient.maBorderColor1 = ChangeLuminance(aColor, nBorderStartOffset);
	rGradient.maBorderColor2 = ChangeLuminance(aColor, nBorderEndOffset);

	rGradient.mnFillOffset1 = nFillStartOffset;
	rGradient.mnFillOffset2 = nFillEndOffset;
	rGradient.mnBorderOffset1 = nBorderStartOffset;
	rGradient.mnBorderOffset2 = nBorderEndOffset;
}




sal_Int32 Theme::GetGradientSaturationOverride (const GradientColorType eType)
{
	GradientDescriptor& rGradient (GetGradient(eType));
	return rGradient.mnSaturationOverride;
}




sal_Int32 Theme::GetGradientBrightnessOverride (const GradientColorType eType)
{
	GradientDescriptor& rGradient (GetGradient(eType));
	return rGradient.mnBrightnessOverride;
}




void Theme::SetGradientSaturationOverride (const GradientColorType eType, const sal_Int32 nValue)
{
	GradientDescriptor& rGradient (GetGradient(eType));
	SetGradient(
		eType,
		rGradient.maBaseColor,
		nValue,
		rGradient.mnBrightnessOverride,
		rGradient.mnFillOffset1,
		rGradient.mnFillOffset2,
		rGradient.mnBorderOffset1,
		rGradient.mnBorderOffset2);
}




void Theme::SetGradientBrightnessOverride (const GradientColorType eType, const sal_Int32 nValue)
{
	GradientDescriptor& rGradient (GetGradient(eType));
	SetGradient(eType,
		rGradient.maBaseColor,
		rGradient.mnSaturationOverride,
		nValue,
		rGradient.mnFillOffset1,
		rGradient.mnFillOffset2,
		rGradient.mnBorderOffset1,
		rGradient.mnBorderOffset2);
}




const BitmapEx& Theme::GetIcon (const IconType eType)
{
	if (eType>=0 && size_t(eType)<maIcons.size())
		return maIcons[eType];
	else
	{
		OSL_ASSERT(eType>=0 && size_t(eType)<maIcons.size());
		return maIcons[0];
	}
}




sal_Int32 Theme::GetIntegerValue (const IntegerValueType eType) const
{
	if (eType>=0 && size_t(eType)<maIntegerValues.size())
		return maIntegerValues[eType];
	else
	{
		OSL_ASSERT(eType>=0 && size_t(eType)<maIntegerValues.size());
		return 0;
	}
}




void Theme::SetIntegerValue (const IntegerValueType eType, const sal_Int32 nValue)
{
	if (eType>=0 && size_t(eType)<maIntegerValues.size())
		maIntegerValues[eType] = nValue;
	else
	{
		OSL_ASSERT(eType>=0 && size_t(eType)<maIntegerValues.size());
	}
}




::rtl::OUString Theme::GetString (const StringType eType) const
{
	if (eType>=0 && size_t(eType)<maStrings.size())
		return maStrings[eType];
	else
	{
		OSL_ASSERT(eType>=0 && size_t(eType)<maStrings.size());
		return ::rtl::OUString();
	}
}




Theme::GradientDescriptor& Theme::GetGradient (const GradientColorType eType)
{
	if (eType>=0 && size_t(eType)<maGradients.size())
		return maGradients[eType];
	else
	{
		OSL_ASSERT(eType>=0 && size_t(eType)<maGradients.size());
		return maGradients[0];
	}
}




void Theme::InitializeIcon (const IconType eType, sal_uInt16 nResourceId)
{
	if (eType>=0 && size_t(eType)<maIcons.size())
	{
		const BitmapEx aIcon (Image(SdResId(nResourceId)).GetBitmapEx());
		maIcons[eType] = aIcon;
	}
	else
	{
		OSL_ASSERT(eType>=0 && size_t(eType)<maIcons.size());
	}
}




} } } // end of namespace ::sd::slidesorter::view