// $Id: bmpalint.cpp 1328 2006-06-15 19:23:45Z alex $ /* @@tag:xara-cn@@ DO NOT MODIFY THIS LINE ================================XARAHEADERSTART=========================== Xara LX, a vector drawing and manipulation program. Copyright (C) 1993-2006 Xara Group Ltd. Copyright on certain contributions may be held in joint with their respective authors. See AUTHORS file for details. LICENSE TO USE AND MODIFY SOFTWARE ---------------------------------- This file is part of Xara LX. Xara LX is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 2 as published by the Free Software Foundation. Xara LX and its component source files are distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. 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Xara Group Ltd, Gaddesden Place, Hemel Hempstead, HP2 6EX, UK. http://www.xara.com/ =================================XARAHEADEREND============================ */ // Bitmap export palette interface class that provides an interface // between the real palette and the sorted version of the palette // All references to 'the palette' in this file refer to the sorted palette // that this class represents. All references to the palette that is used // for exporting a bitmap will state they are using the 'real palette'. #include "camtypes.h" #include "bmpalint.h" #include "bmpprefs.h" // For ExtendedPalette #include "bmapprev.h" // For BmapPrevDlg #include "bmpalctrl.h" CC_IMPLEMENT_MEMDUMP(BitmapExportPaletteInterface, CC_CLASS_MEMDUMP) #define new CAM_DEBUG_NEW bool BitmapExportPaletteInterface::m_SortedPaletteValid; BitmapExportPaletteInterface::BitmapExportPaletteInterface() { // Make sure the sorted palette is generated before it is used InvalidateSortedPalette(); m_CurrentSortType = SORT_USE; // Default sort type } /******************************************************************************************** > INT32 BitmapExportPaletteInterface::SortedValueToRealValue(INT32 index) Author: Jonathan_Payne (Xara Group Ltd) Created: 08/12/2000 Inputs: An index in the sorted palette (eg from the palette control) Returns: An index in the real palette (eg that used for bitmap export) Purpose: To convert between the sorted and real palettes ********************************************************************************************/ INT32 BitmapExportPaletteInterface::SortedValueToRealValue(INT32 index) { if (!m_SortedPaletteValid) ValidateSortedPalette(); if (index == BitmapExportPaletteControl::INVALID_COLOUR_VALUE) return BitmapExportPaletteControl::INVALID_COLOUR_VALUE; else return m_PaletteSortedToReal[index]; } /******************************************************************************************** > INT32 BitmapExportPaletteInterface::RealValueToSortedValue(INT32 index) Author: Jonathan_Payne (Xara Group Ltd) Created: 08/12/2000 Inputs: An index in the real palette (eg that used for bitmap export) Returns: An index in the sorted palette (eg from the palette control) Purpose: To convert between the real and sorted palettes ********************************************************************************************/ INT32 BitmapExportPaletteInterface::RealValueToSortedValue(INT32 index) { if (!m_SortedPaletteValid) ValidateSortedPalette(); if (index == BitmapExportPaletteControl::INVALID_COLOUR_VALUE) return BitmapExportPaletteControl::INVALID_COLOUR_VALUE; else return m_PaletteSortedToReal[index]; } void BitmapExportPaletteInterface::InvalidateSortedPalette() { m_SortedPaletteValid = false; } INT32 BitmapExportPaletteInterface::GetNumberOfColours() { if (BmapPrevDlg::m_pExportOptions->GetSupportsPalette()) { ExtendedPalette *palette = BmapPrevDlg::m_pExportOptions->GetExtendedPalette(); ERROR3IF(!palette, "There is no palette - This should never happen"); return palette->NumberOfColours; } else return 0; } BYTE BitmapExportPaletteInterface::GetRed(INT32 index) { if (!m_SortedPaletteValid) ValidateSortedPalette(); ERROR3IF(index == -1, "Function called with an invalid palette index"); ExtendedPalette *palette = BmapPrevDlg::m_pExportOptions->GetExtendedPalette(); ERROR3IF(!palette, "There is no palette - This should never happen"); return palette->Data[m_PaletteSortedToReal[index]].Red; } BYTE BitmapExportPaletteInterface::GetGreen(INT32 index) { if (!m_SortedPaletteValid) ValidateSortedPalette(); ERROR3IF(index == -1, "Function called with an invalid palette index"); ExtendedPalette *palette = BmapPrevDlg::m_pExportOptions->GetExtendedPalette(); ERROR3IF(!palette, "There is no palette - This should never happen"); return palette->Data[m_PaletteSortedToReal[index]].Green; } BYTE BitmapExportPaletteInterface::GetBlue(INT32 index) { if (!m_SortedPaletteValid) ValidateSortedPalette(); ERROR3IF(index == -1, "Function called with an invalid palette index"); ExtendedPalette *palette = BmapPrevDlg::m_pExportOptions->GetExtendedPalette(); ERROR3IF(!palette, "There is no palette - This should never happen"); return palette->Data[m_PaletteSortedToReal[index]].Blue; } INT32 BitmapExportPaletteInterface::GetFlags(INT32 index) { if (!m_SortedPaletteValid) ValidateSortedPalette(); ERROR3IF(index == -1, "Function called with an invalid palette index"); ExtendedPalette *palette = BmapPrevDlg::m_pExportOptions->GetExtendedPalette(); ERROR3IF(!palette, "There is no palette - This should never happen"); return palette->Data[m_PaletteSortedToReal[index]].Flags; } void BitmapExportPaletteInterface::SetRed(INT32 index, BYTE red) { if (!m_SortedPaletteValid) ValidateSortedPalette(); ERROR3IF(index == -1, "Function called with an invalid palette index"); ExtendedPalette *palette = BmapPrevDlg::m_pExportOptions->GetExtendedPalette(); ERROR3IF(!palette, "There is no palette - This should never happen"); palette->Data[m_PaletteSortedToReal[index]].Red = red; palette->Data[m_PaletteSortedToReal[index]].Flags &= LOCKED_COLOUR; } void BitmapExportPaletteInterface::SetGreen(INT32 index, BYTE green) { if (!m_SortedPaletteValid) ValidateSortedPalette(); ERROR3IF(index == -1, "Function called with an invalid palette index"); ExtendedPalette *palette = BmapPrevDlg::m_pExportOptions->GetExtendedPalette(); ERROR3IF(!palette, "There is no palette - This should never happen"); palette->Data[m_PaletteSortedToReal[index]].Green = green; palette->Data[m_PaletteSortedToReal[index]].Flags &= LOCKED_COLOUR; } void BitmapExportPaletteInterface::SetBlue(INT32 index, BYTE blue) { if (!m_SortedPaletteValid) ValidateSortedPalette(); ERROR3IF(index == -1, "Function called with an invalid palette index"); ExtendedPalette *palette = BmapPrevDlg::m_pExportOptions->GetExtendedPalette(); ERROR3IF(!palette, "There is no palette - This should never happen"); palette->Data[m_PaletteSortedToReal[index]].Blue = blue; palette->Data[m_PaletteSortedToReal[index]].Flags &= LOCKED_COLOUR; } void BitmapExportPaletteInterface::SetFlags(INT32 index, INT32 flags) { if (!m_SortedPaletteValid) ValidateSortedPalette(); ERROR3IF(index == -1, "Function called with an invalid palette index"); ExtendedPalette *palette = BmapPrevDlg::m_pExportOptions->GetExtendedPalette(); ERROR3IF(!palette, "There is no palette - This should never happen"); palette->Data[m_PaletteSortedToReal[index]].Flags = flags; } void BitmapExportPaletteInterface::ValidateSortedPalette() { // Initalize the palette to not sorted - This is done what ever the sort type // so all the colours are in the palette. A possible optimisation would be to // only do this step on first use and when the number of colours in the palette // changes INT32 i; for (i = 0; i < GetNumberOfColours(); ++i) m_PaletteSortedToReal[i] = i; switch (m_CurrentSortType) { case SORT_USE: case SORT_NONE: { // The default palette order (as it comes from Gavin/SimonK code) is by // use so there is nothing to do in this case (the for loops above and // below this switch sort out the palette indexes). break; } case SORT_HUE: { qsort(m_PaletteSortedToReal, GetNumberOfColours(), sizeof(INT32), (INT32 (*)(const void*,const void*))HueComparisonFn); break; } case SORT_LUMINANCE: { qsort(m_PaletteSortedToReal, GetNumberOfColours(), sizeof(INT32), (INT32 (*)(const void*,const void*))LuminanceComparisonFn); break; } default: { // Don't use ERROR3's here as they upset the rendering code TRACE( _T("Unknown sort type used\n")); break; } } // Copy the changes into the other array for (i = 0; i < GetNumberOfColours(); ++i) m_PaletteRealToSorted[m_PaletteSortedToReal[i]] = i; m_SortedPaletteValid = true; } void BitmapExportPaletteInterface::SetPaletteSortType(PaletteSortType newSortType) { m_CurrentSortType = newSortType; InvalidateSortedPalette(); // make sure palette is regenerated on next use } BitmapExportPaletteInterface::PaletteSortType BitmapExportPaletteInterface::GetPaletteSortType() { return m_CurrentSortType; } /****************************************************************************************** > INT32 BitmapExportPaletteInterface::LuminanceComparisonFn(const INT32 *arg1, const INT32 *arg2) Author: Jonathan_Payne (Xara Group Ltd) (based on code by Alex Price) Created: 30/11/2000 Inputs: arg1 Pointer to a value in the m_PaletteSortedToReal array ie an index in the real palette arg2 Pointer to a value in the m_PaletteSortedToReal array ie an index in the real palette Purpose: For use with qsort'ing the palette by Luminance ******************************************************************************************/ INT32 BitmapExportPaletteInterface::LuminanceComparisonFn(const INT32 *arg1, const INT32 *arg2) { INT32 paletteIndex1 = *arg1; INT32 paletteIndex2 = *arg2; ExtendedPalette *palette = BmapPrevDlg::m_pExportOptions->GetExtendedPalette(); ERROR3IF(!palette, "There is no palette - This should never happen"); // Extract the red, green, and blue values for the first index INT32 red1 = palette->Data[paletteIndex1].Red; INT32 green1 = palette->Data[paletteIndex1].Green; INT32 blue1 = palette->Data[paletteIndex1].Blue; // Extract the red, green, and blue values for the first index INT32 red2 = palette->Data[paletteIndex2].Red; INT32 green2 = palette->Data[paletteIndex2].Green; INT32 blue2 = palette->Data[paletteIndex2].Blue; // Get the Luminance value corresponding to the first RGB triplet. double luminance1 = ( 0.299 * red1 ) + ( 0.587 * green1 ) + ( 0.114 * blue1 ); // Get the Luminance value corresponding to the second RGB triplet. double luminance2 = ( 0.299 * red2 ) + ( 0.587 * green2 ) + ( 0.114 * blue1 ); // This will sort in descending Hue values. if (luminance1 < luminance2) return 1; else if (luminance1 > luminance2) return -1; ERROR3IF(luminance1 != luminance2, "This is not possible!"); if (red1 < red2 ) return 1; else if (red1 > red2) return -1; ERROR3IF(red1 != red2, "This is not possible!"); if (green1 < green2 ) return 1; else if (green1 > green2) return -1; ERROR3IF(green1 != green2, "This is not possible!"); if (blue1 < blue2 ) return 1; else if (blue1 > blue2) return -1; ERROR3IF(blue1 != blue2, "This is not possible!"); return 0; // The red, green and blue are equal } /****************************************************************************************** > INT32 BitmapExportPaletteInterface::HueComparisonFn(const INT32 *arg1, const INT32 *arg2) Author: Jonathan_Payne (Xara Group Ltd) (based on code by Alex Price) Created: 30/11/2000 Inputs: arg1 Pointer to a value in the m_PaletteSortedToReal array ie an index in the real palette arg2 Pointer to a value in the m_PaletteSortedToReal array ie an index in the real palette Purpose: For use with qsort'ing the palette by hue ******************************************************************************************/ INT32 BitmapExportPaletteInterface::HueComparisonFn(const INT32 *arg1, const INT32 *arg2) { INT32 paletteIndex1 = *arg1; INT32 paletteIndex2 = *arg2; ExtendedPalette *palette = BmapPrevDlg::m_pExportOptions->GetExtendedPalette(); ERROR3IF(!palette, "There is no palette - This should never happen"); // Extract the red, green, and blue values for the first index INT32 red1 = palette->Data[paletteIndex1].Red; INT32 green1 = palette->Data[paletteIndex1].Green; INT32 blue1 = palette->Data[paletteIndex1].Blue; // Extract the red, green, and blue values for the first index INT32 red2 = palette->Data[paletteIndex2].Red; INT32 green2 = palette->Data[paletteIndex2].Green; INT32 blue2 = palette->Data[paletteIndex2].Blue; // Get the Hue value corresponding to the first RGB triplet. DocColour colour1(red1, green1, blue1); INT32 hue1, saturation1, value1; colour1.GetHSVValue(&hue1, &saturation1, &value1); // Get the Hue value corresponding to the first RGB triplet. DocColour colour2(red2, green2, blue2); INT32 hue2, saturation2, value2; colour2.GetHSVValue(&hue2, &saturation2, &value2); if (hue1 > hue2) return 1; else if (hue1 < hue2) return -1; ERROR3IF(hue1 != hue2, "This is not possible!"); // If the Hue values are the same, then put in order of Saturation if (saturation1 < saturation2) return 1; else if (saturation1 > saturation2) return -1; ERROR3IF(saturation1 != saturation2, "This is not possible!"); // If the saturation values are the same, then the final step is // to put them in order of Value if (value1 < value2) return 1; else if (value1 > value2) return -1; ERROR3IF(value1 != value2, "This is not possible!"); return 0; // Everything is eqaul }