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1 // Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // This module implements the templated classes used to define screen display instances. |
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15 // It only needs to be #included into scnew.cpp whisch is the only place the full-qualified templates are instanced. |
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16 // Most of these methods are simply shims to the SurfaceHelper class. |
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17 // |
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18 // |
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19 |
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20 /** |
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21 @file |
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22 */ |
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23 #ifndef __SCDRAW_INL__ |
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24 #define __SCDRAW_INL__ |
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25 |
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26 #include "scdraw.h" //should have already happened. |
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27 |
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28 // |
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29 // Implementation of template CGenericScreenDevice |
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30 // Arguments <class T> |
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31 // Defines the common portions of a screendriver for GCE |
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32 // the actual mode and the bits per pixel (or pixels per word) is not specified. |
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33 // |
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34 |
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35 |
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36 /** Nothing to do to init the screen for the display modes currently supported. |
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37 * This is the place to set up the palette for low-colour screen devices, possibly including 12-bit. |
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38 **/ |
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39 template <class T> TInt CGenericScreenDevice<T>::InitScreen() |
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40 { |
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41 return KErrNone ; |
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42 } |
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43 |
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44 //Construct splits into 2 methods. This portion is not dependent on pixel format |
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45 template <class T> TInt CGenericScreenDevice<T>::ConstructScreen(TInt , TAny *, TSize aSize, TInt ) |
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46 { |
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47 CDrawXxxBppBitmap::iScanLineWords = iHelper.BytesPerScanline() / 4; |
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48 if (CDrawXxxBppBitmap::iScanLineWords==0) |
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49 { //Note: This will cause WServ startup to fail. WServ only accepts KErrNotSupported |
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50 return KErrHardwareNotAvailable; |
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51 } |
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52 TInt ret = CDrawXxxBppBitmap::Construct(aSize); |
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53 if (ret == KErrNone) |
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54 { |
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55 CDrawXxxBppBitmap::iBits = (TUint32*)iHelper.AddressFirstPixel(); |
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56 if (CDrawXxxBppBitmap::iBits==NULL) |
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57 { //Note: This will cause WServ startup to fail. WServ only accepts KErrNotSupported |
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58 ret=KErrHardwareNotAvailable; |
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59 } |
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60 } |
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61 return ret; |
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62 } |
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63 |
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64 //Switch from the previous aDrawDevice to this one |
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65 template <class T> void CGenericScreenDevice<T>::SetDisplayMode(CFbsDrawDevice* aDrawDevice) |
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66 { |
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67 iHelper.ResetUpdateRegion(); |
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68 |
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69 // Inherit the original draw device's orientation, if available. |
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70 TDeviceOrientation devOrientation = EDeviceOrientationNormal; |
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71 |
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72 TAny* interface = NULL; |
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73 TInt ret = aDrawDevice->GetInterface(KSurfaceInterfaceID, interface); |
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74 //can't survive setting a different orientation to the source device so must read it successfully |
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75 __ASSERT_ALWAYS(ret == KErrNone,Panic(EScreenDriverPanicIncompatiblePreviousDevice)); |
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76 devOrientation = reinterpret_cast<MSurfaceId*>(interface)->DeviceOrientation(); |
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77 //SetDeviceOrientation will panic if it is incompatible |
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78 SetDeviceOrientation(devOrientation); |
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79 |
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80 CDrawXxxBppBitmap::CopyOldSettings(aDrawDevice); |
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81 InitScreen(); |
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82 } |
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83 |
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84 template <class T> TInt CGenericScreenDevice<T>::HorzTwipsPerThousandPixels() const |
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85 { |
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86 return iHelper.HorzTwipsPerThousandPixels(CDrawXxxBppBitmap::iSize); |
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87 } |
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88 |
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89 template <class T> TInt CGenericScreenDevice<T>::VertTwipsPerThousandPixels() const |
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90 { |
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91 return iHelper.VertTwipsPerThousandPixels(CDrawXxxBppBitmap::iSize); |
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92 } |
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93 |
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94 template <class T> void CGenericScreenDevice<T>::Update() |
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95 { |
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96 iHelper.Update(); |
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97 } |
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98 |
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99 template <class T> void CGenericScreenDevice<T>::Update(const TRegion& aRegion) |
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100 { |
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101 iHelper.Update(aRegion); |
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102 } |
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103 |
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104 template <class T> void CGenericScreenDevice<T>::UpdateRegion(const TRect& aRect) |
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105 { |
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106 iHelper.UpdateRegion(aRect); |
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107 } |
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108 |
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109 template <class T> TInt CGenericScreenDevice<T>::GetInterface(TInt aInterfaceId, TAny*& aInterface) |
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110 { |
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111 if(aInterfaceId == KSurfaceInterfaceID) |
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112 { |
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113 aInterface = static_cast <MSurfaceId*> (this); |
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114 return KErrNone; |
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115 } |
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116 else |
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117 { |
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118 return CDrawXxxBppBitmap::GetInterface(aInterfaceId, aInterface); |
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119 } |
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120 } |
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121 |
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122 template <class T> void CGenericScreenDevice<T>::GetSurface(TSurfaceId& aSid) const |
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123 { |
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124 iHelper.GetSurface(aSid); |
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125 } |
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126 |
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127 |
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128 template <class T> TUint CGenericScreenDevice<T>::DeviceOrientationsAvailable() const |
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129 { |
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130 return iHelper.DeviceOrientationsAvailable(CGenericScreenDevice::iSize); |
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131 } |
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132 |
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133 template <class T> TDeviceOrientation CGenericScreenDevice<T>::DeviceOrientation() const |
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134 { |
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135 return iHelper.DeviceOrientation(); |
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136 } |
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137 |
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138 // |
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139 // Implementation of template CPalettizedScreenDevice |
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140 // Arguments <class T,TDisplayMode displayMode,TInt pixelsPerWord> |
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141 // Defines a screendriver for GCE with a mode specified without using a GUID, probably palettized |
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142 // |
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143 // |
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144 |
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145 |
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146 //Initialise palletised modes that are not assigned GUIDs |
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147 template <class T,TDisplayMode displayMode,TInt pixelsPerWord> |
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148 TInt CPalettizedScreenDevice<T,displayMode,pixelsPerWord>::ConstructScreen(TInt aScreenNo, TAny *aBitmapAddress, TSize aSize, TInt aHalMode) |
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149 { |
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150 TInt ret = CGenericScreenDevice::iHelper.Construct(aScreenNo, (TUidPixelFormat)0,aHalMode); //displayMode is NOT recorded in surfaceID |
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151 if (ret != KErrNone) |
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152 return ret; |
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153 return CGenericScreenDevice::ConstructScreen(aScreenNo,aBitmapAddress,aSize,aHalMode); |
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154 } |
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155 |
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156 //Set size members based on pixel width/height, but also set stride member using pixels per word |
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157 template <class T,TDisplayMode displayMode,TInt pixelsPerWord> |
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158 void CPalettizedScreenDevice<T,displayMode,pixelsPerWord>::SetSize(const TSize& aSize) |
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159 { |
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160 CDrawBitmap::SetSize(aSize); |
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161 __ASSERT_DEBUG(CGenericScreenDevice::iSize == aSize, User::Invariant()); |
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162 CGenericScreenDevice::iLongWidth = CGenericScreenDevice::iScanLineWords * pixelsPerWord; |
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163 } |
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164 |
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165 |
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166 //sets the orientation flags, and rotates the bitmap. Calls SetSize, which uses pixelsPerWord |
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167 template <class T,TDisplayMode displayMode,TInt pixelsPerWord> |
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168 TBool CPalettizedScreenDevice<T,displayMode,pixelsPerWord>::SetDeviceOrientation(TDeviceOrientation aOrientation) |
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169 { |
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170 TSize newSize; |
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171 |
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172 if (!CGenericScreenDevice::iHelper.SetDeviceOrientation(aOrientation, newSize)) |
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173 { |
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174 return EFalse; |
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175 } |
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176 |
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177 // Need to update size, scan line size, etc. |
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178 CGenericScreenDevice::iScanLineWords = CGenericScreenDevice::iHelper.BytesPerScanline() / 4; //presumption here that BPS is always mod4. |
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179 CGenericScreenDevice::iBits = (TUint32*)CGenericScreenDevice::iHelper.AddressFirstPixel(); |
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180 __ASSERT_ALWAYS(CGenericScreenDevice::iScanLineWords && CGenericScreenDevice::iBits,Panic(EScreenDriverPanicInvalidHalValue)); |
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181 CGenericScreenDevice::SetSize(newSize); |
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182 |
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183 return ETrue; |
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184 } |
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185 |
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186 |
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187 // |
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188 // Implementation of template CGuidScreenDevice |
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189 // Arguments <class T,TInt guidMode,TInt pixelsPerWord> |
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190 // Defines a screendriver for GCE with a mode specified using a GUID, probably flat colour |
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191 // |
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192 // |
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193 |
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194 //Initialise modes that have been assigned GUIDs |
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195 template <class T,TUidPixelFormat guidMode,TInt pixelsPerWord> |
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196 TInt CGuidScreenDevice<T,guidMode,pixelsPerWord>::ConstructScreen(TInt aScreenNo, TAny *aBitmapAddress, TSize aSize, TInt aHalMode) |
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197 { |
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198 TInt ret = CGenericScreenDevice::iHelper.Construct(aScreenNo, guidMode,aHalMode); |
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199 if (ret != KErrNone) |
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200 { |
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201 return ret; |
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202 } |
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203 return CGenericScreenDevice::ConstructScreen(aScreenNo,aBitmapAddress,aSize,aHalMode); |
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204 } |
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205 |
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206 |
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207 //sets the orientation flags, and rotates the bitmap. Calls SetSize, which uses pixelsPerWord |
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208 template <class T,TUidPixelFormat guidMode,TInt pixelsPerWord> |
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209 TBool CGuidScreenDevice<T,guidMode,pixelsPerWord>::SetDeviceOrientation(TDeviceOrientation aOrientation) |
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210 { |
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211 TSize newSize; |
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212 |
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213 if (!CGenericScreenDevice::iHelper.SetDeviceOrientation(aOrientation, newSize)) |
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214 { |
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215 return EFalse; |
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216 } |
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217 |
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218 // Need to update size, scan line size, etc. |
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219 CGenericScreenDevice::iScanLineWords = CGenericScreenDevice::iHelper.BytesPerScanline() / 4; //presumption here that BPS is always mod4. |
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220 CGenericScreenDevice::iBits = (TUint32*)CGenericScreenDevice::iHelper.AddressFirstPixel(); |
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221 __ASSERT_ALWAYS(CGenericScreenDevice::iScanLineWords && CGenericScreenDevice::iBits,Panic(EScreenDriverPanicInvalidHalValue)); |
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222 CGenericScreenDevice::SetSize(newSize); |
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223 |
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224 return ETrue; |
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225 } |
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226 |
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227 |
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228 |
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229 //Set size members based on pixel width/height, but also set stride member using pixels per word |
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230 template <class T,TUidPixelFormat guidMode,TInt pixelsPerWord> |
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231 void CGuidScreenDevice<T,guidMode,pixelsPerWord>::SetSize(const TSize& aSize) |
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232 { |
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233 CDrawBitmap::SetSize(aSize); |
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234 __ASSERT_DEBUG(CGenericScreenDevice::iSize == aSize, User::Invariant()); |
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235 CGenericScreenDevice::iLongWidth = CGenericScreenDevice::iScanLineWords * pixelsPerWord; |
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236 } |
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237 |
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238 |
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239 |
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240 |
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241 |
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242 #endif //__SCDRAW_INL__ |