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Diffstat (limited to 'engines/sword25/gfx/bitmap.cpp')
| -rwxr-xr-x | engines/sword25/gfx/bitmap.cpp | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/engines/sword25/gfx/bitmap.cpp b/engines/sword25/gfx/bitmap.cpp new file mode 100755 index 0000000000..85442a835a --- /dev/null +++ b/engines/sword25/gfx/bitmap.cpp @@ -0,0 +1,214 @@ +// ----------------------------------------------------------------------------- +// This file is part of Broken Sword 2.5 +// Copyright (c) Malte Thiesen, Daniel Queteschiner and Michael Elsdörfer +// +// Broken Sword 2.5 is free software; you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation; either version 2 of the License, or +// (at your option) any later version. +// +// Broken Sword 2.5 is 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. +// +// You should have received a copy of the GNU General Public License +// along with Broken Sword 2.5; if not, write to the Free Software +// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +// ----------------------------------------------------------------------------- + +// ----------------------------------------------------------------------------- +// Includes +// ----------------------------------------------------------------------------- + +#include "bitmap.h" +#include "kernel/outputpersistenceblock.h" +#include "kernel/inputpersistenceblock.h" + +// ----------------------------------------------------------------------------- +// Logging +// ----------------------------------------------------------------------------- + +#define BS_LOG_PREFIX "BITMAP" + +// ----------------------------------------------------------------------------- +// Konstruktion / Destruktion +// ----------------------------------------------------------------------------- + +BS_Bitmap::BS_Bitmap(BS_RenderObjectPtr<BS_RenderObject> ParentPtr, TYPES Type, unsigned int Handle) : + BS_RenderObject(ParentPtr, Type, Handle), + m_ModulationColor(0xffffffff), + m_ScaleFactorX(1.0f), + m_ScaleFactorY(1.0f), + m_FlipH(false), + m_FlipV(false) +{ +} + +// ----------------------------------------------------------------------------- + +BS_Bitmap::~BS_Bitmap() +{ +} + +// ----------------------------------------------------------------------------- +// Darstellungsart festlegen +// ----------------------------------------------------------------------------- + +void BS_Bitmap::SetAlpha(int Alpha) +{ + if (!IsAlphaAllowed()) + { + BS_LOG_WARNINGLN("Tried to set alpha value on a bitmap that does not support alpha blending. Call was ignored."); + return; + } + + if (Alpha < 0 || Alpha > 255) + { + int OldAlpha = Alpha; + if (Alpha < 0) Alpha = 0; + if (Alpha > 255) Alpha = 255; + BS_LOG_WARNINGLN("Tried to set an invalid alpha value (%d) on a bitmap. Value was changed to %d.", OldAlpha, Alpha); + + return; + } + + unsigned int NewModulationColor = (m_ModulationColor & 0x00ffffff) | Alpha << 24; + if (NewModulationColor != m_ModulationColor) + { + m_ModulationColor = NewModulationColor; + ForceRefresh(); + } +} + +// ----------------------------------------------------------------------------- + +void BS_Bitmap::SetModulationColor(unsigned int ModulationColor) +{ + if (!IsColorModulationAllowed()) + { + BS_LOG_WARNINGLN("Tried to set modulation color of a bitmap that does not support color modulation. Call was ignored."); + return; + } + + unsigned int NewModulationColor = (ModulationColor & 0x00ffffff) | (m_ModulationColor & 0xff000000); + if (NewModulationColor != m_ModulationColor) + { + m_ModulationColor = NewModulationColor; + ForceRefresh(); + } +} + +// ----------------------------------------------------------------------------- + +void BS_Bitmap::SetScaleFactor(float ScaleFactor) +{ + SetScaleFactorX(ScaleFactor); + SetScaleFactorY(ScaleFactor); +} + +// ----------------------------------------------------------------------------- + +void BS_Bitmap::SetScaleFactorX(float ScaleFactorX) +{ + if (!IsScalingAllowed()) + { + BS_LOG_WARNINGLN("Tried to set scale factor of a bitmap that does not support scaling. Call was ignored."); + return; + } + + if (ScaleFactorX < 0) + { + BS_LOG_WARNINGLN("Tried to set scale factor of a bitmap to a negative value. Call was ignored."); + return; + } + + if (ScaleFactorX != m_ScaleFactorX) + { + m_ScaleFactorX = ScaleFactorX; + m_Width = static_cast<int>(m_OriginalWidth * m_ScaleFactorX); + if (m_ScaleFactorX <= 0.0f) m_ScaleFactorX = 0.001f; + ForceRefresh(); + } +} + +// ----------------------------------------------------------------------------- + +void BS_Bitmap::SetScaleFactorY(float ScaleFactorY) +{ + if (!IsScalingAllowed()) + { + BS_LOG_WARNINGLN("Tried to set scale factor of a bitmap that does not support scaling. Call was ignored."); + return; + } + + if (ScaleFactorY < 0) + { + BS_LOG_WARNINGLN("Tried to set scale factor of a bitmap to a negative value. Call was ignored."); + return; + } + + if (ScaleFactorY != m_ScaleFactorY) + { + m_ScaleFactorY = ScaleFactorY; + m_Height = static_cast<int>(m_OriginalHeight * ScaleFactorY); + if (m_ScaleFactorY <= 0.0f) m_ScaleFactorY = 0.001f; + ForceRefresh(); + } +} + +// ----------------------------------------------------------------------------- + +void BS_Bitmap::SetFlipH(bool FlipH) +{ + m_FlipH = FlipH; + ForceRefresh(); +} + +// ----------------------------------------------------------------------------- + +void BS_Bitmap::SetFlipV(bool FlipV) +{ + m_FlipV = FlipV; + ForceRefresh(); +} + +// ----------------------------------------------------------------------------- +// Persistenz +// ----------------------------------------------------------------------------- + +bool BS_Bitmap::Persist(BS_OutputPersistenceBlock & Writer) +{ + bool Result = true; + + Result &= BS_RenderObject::Persist(Writer); + Writer.Write(m_FlipH); + Writer.Write(m_FlipV); + Writer.Write(m_ScaleFactorX); + Writer.Write(m_ScaleFactorY); + Writer.Write(m_ModulationColor); + Writer.Write(m_OriginalWidth); + Writer.Write(m_OriginalHeight); + + return Result; +} + +// ----------------------------------------------------------------------------- + +bool BS_Bitmap::Unpersist(BS_InputPersistenceBlock & Reader) +{ + bool Result = true; + + Result &= BS_RenderObject::Unpersist(Reader); + Reader.Read(m_FlipH); + Reader.Read(m_FlipV); + Reader.Read(m_ScaleFactorX); + Reader.Read(m_ScaleFactorY); + Reader.Read(m_ModulationColor); + Reader.Read(m_OriginalWidth); + Reader.Read(m_OriginalHeight); + + ForceRefresh(); + + return Reader.IsGood() && Result; +} |