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1 // Copyright (c) 2003-2009 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 functions that create the screen class depending |
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15 // on the screen type. |
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16 // Include files |
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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 /********************************************************************/ |
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24 #include <bitdraw.h> |
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25 #include "scdraw.h" |
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26 #include <hal.h> |
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27 #include "ScreenInfo.h" |
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28 #include <graphics/gdi/gdiconsts.h> |
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29 |
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30 /** |
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31 Creates an instance of CFbsDrawDevice class. |
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32 @param aScreenNo Screen number |
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33 @param aDispMode Display mode |
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34 @param aScreenInfo Screen parameters: video memory address and screen size |
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35 @return A pointer to the created CFbsDrawDevice object |
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36 @leave System-wide error code including KErrNoMemory |
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37 @internalComponent |
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38 */ |
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39 static CFbsDrawDevice* CreateInstanceL(TInt aScreenNo, |
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40 TDisplayMode aDispMode, |
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41 const TScreenInfo& aScreenInfo) |
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42 { |
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43 CFbsDrawDevice* drawDevice = NULL; |
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44 |
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45 TInt bpp; |
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46 if(HAL::Get(aScreenNo, HALData::EDisplayMode, bpp) != KErrNone) |
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47 { |
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48 User::Leave(KErrNotSupported); |
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49 } |
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50 if(HAL::Get(aScreenNo, HALData::EDisplayBitsPerPixel, bpp) != KErrNone) |
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51 { |
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52 User::Leave(KErrNotSupported); |
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53 } |
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54 |
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55 //Switch the display mode, call the construtor of the class defined |
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56 //in the ScmonXX.cpp or SccolXX.cpp file. |
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57 switch(aDispMode) |
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58 { |
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59 case EColor256: // 8 Bpp color mode |
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60 if(bpp == 8) |
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61 { |
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62 drawDevice = new (ELeave) CDrawEightBppScreenBitmapColor; |
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63 CleanupStack::PushL(drawDevice) ; |
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64 User::LeaveIfError(((CDrawEightBppScreenBitmapColor*)drawDevice)->ConstructScreenL( |
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65 aScreenNo, |
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66 aScreenInfo.iAddress, |
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67 aScreenInfo.iSize)); |
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68 } |
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69 else |
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70 { |
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71 User::Leave(KErrNotSupported); |
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72 } |
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73 break; |
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74 |
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75 case EColor64K: // 16 Bpp color mode |
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76 if(bpp == 16) |
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77 { |
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78 drawDevice = new (ELeave) CDrawSixteenBppScreenBitmap; |
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79 CleanupStack::PushL(drawDevice); |
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80 User::LeaveIfError(((CDrawSixteenBppScreenBitmap*)drawDevice)->ConstructScreenL( |
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81 aScreenNo, |
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82 aScreenInfo.iAddress, |
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83 aScreenInfo.iSize)); |
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84 } |
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85 else |
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86 { |
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87 User::Leave(KErrNotSupported); |
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88 } |
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89 break; |
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90 |
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91 case EColor16MU: // 24 unpacked Bpp color mode |
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92 if((bpp == 24 || bpp == 32) && aDispMode == CFbsDrawDevice::DisplayMode16M()) //there is some "ambiguity" about 24 and 32 bit modes... |
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93 //They are both byte per color component, and both actually have 32 bits per pixel memory use. |
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94 { |
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95 drawDevice = new (ELeave) CDrawUTwentyFourBppScreenBitmap; |
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96 CleanupStack::PushL(drawDevice); |
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97 User::LeaveIfError(((CDrawUTwentyFourBppScreenBitmap*)drawDevice)->ConstructScreenL( |
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98 aScreenNo, |
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99 aScreenInfo.iAddress, |
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100 aScreenInfo.iSize)); |
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101 } |
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102 else |
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103 { |
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104 User::Leave(KErrNotSupported); |
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105 } |
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106 break; |
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107 |
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108 case EColor16MA: // 32 Bpp color mode |
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109 if((bpp == 24 || bpp == 32) && aDispMode == CFbsDrawDevice::DisplayMode16M()) //there is some "ambiguity" about 24 and 32 bit modes... |
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110 //They are both byte per color component, and both actually have 32 bits per pixel memory use. |
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111 { |
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112 drawDevice = new (ELeave) CDrawThirtyTwoBppScreenBitmapAlpha; |
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113 CleanupStack::PushL(drawDevice); |
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114 User::LeaveIfError(((CDrawThirtyTwoBppScreenBitmapAlpha*)drawDevice)->ConstructScreenL( |
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115 aScreenNo, |
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116 aScreenInfo.iAddress, |
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117 aScreenInfo.iSize)); |
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118 } |
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119 else |
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120 { |
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121 User::Leave(KErrNotSupported); |
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122 } |
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123 break; |
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124 |
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125 case EColor16MAP: // 32 Bpp color mode |
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126 if((bpp == 24 || bpp == 32) && aDispMode == CFbsDrawDevice::DisplayMode16M()) //there is some "ambiguity" about 24 and 32 bit modes... |
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127 //They are both byte per color component, and both actually have 32 bits per pixel memory use. |
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128 { |
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129 drawDevice = new (ELeave) CDrawThirtyTwoBppScreenBitmapAlphaPM; |
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130 CleanupStack::PushL(drawDevice); |
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131 User::LeaveIfError(((CDrawThirtyTwoBppScreenBitmapAlphaPM*)drawDevice)->ConstructScreenL( |
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132 aScreenNo, |
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133 aScreenInfo.iAddress, |
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134 aScreenInfo.iSize)); |
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135 } |
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136 else |
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137 { |
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138 User::Leave(KErrNotSupported); |
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139 } |
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140 break; |
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141 |
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142 default: |
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143 User::Leave(KErrNotSupported); |
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144 } |
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145 |
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146 CleanupStack::Pop(drawDevice); |
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147 return drawDevice; |
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148 } |
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149 |
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150 |
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151 /********************************************************************/ |
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152 /* Implementation of CFbsDrawDevice class */ |
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153 /********************************************************************/ |
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154 |
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155 /** |
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156 This function calls the correct constructor in function of the display mode. |
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157 @param aInfo, Structure of the LCD info |
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158 @param aDispMode, display mode |
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159 @return A pointer to just created screen device, which implements CFbsDrawDevice interface |
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160 @deprecated Use CFbsDrawDevice::NewScreenDeviceL(TInt aScreenNo, TDisplayMode aDispMode) |
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161 */ |
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162 EXPORT_C CFbsDrawDevice* CFbsDrawDevice::NewScreenDeviceL(TScreenInfoV01 aInfo, TDisplayMode aDispMode) |
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163 { |
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164 __ASSERT_ALWAYS(aInfo.iScreenAddressValid, Panic(EScreenDriverPanicInvalidWindowHandle)); |
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165 TScreenInfo screenInfo(aInfo.iScreenAddress, aInfo.iScreenSize); |
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166 return ::CreateInstanceL(KDefaultScreenNo, aDispMode, screenInfo); |
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167 } |
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168 |
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169 /** |
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170 Creates a new screen device instance, which implements CFbsDrawDevice interface. |
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171 The method has to be implemented for each type of supported video hardware. |
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172 @param aScreenNo Screen number |
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173 @param aDispMode Requested display mode |
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174 @return A pointer to just created screen device, which implements CFbsDrawDevice interface |
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175 @leave KErrNoMemory Not enough memory |
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176 KErrNotSupported The requested screen device type is not supported |
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177 */ |
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178 EXPORT_C CFbsDrawDevice* CFbsDrawDevice::NewScreenDeviceL(TInt aScreenNo, |
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179 TDisplayMode aDispMode) |
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180 { |
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181 TInt address = 0, width = 0, height = 0; |
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182 User::LeaveIfError(HAL::Get(aScreenNo, HALData::EDisplayMemoryAddress, address)); |
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183 User::LeaveIfError(HAL::Get(aScreenNo, HALData::EDisplayXPixels, width)); |
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184 User::LeaveIfError(HAL::Get(aScreenNo, HALData::EDisplayYPixels, height)); |
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185 __ASSERT_ALWAYS(width > 0 && height > 0 && address != 0, Panic(EScreenDriverPanicInvalidHalValue)); |
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186 TScreenInfo screenInfo(reinterpret_cast <TAny*> (address), TSize(width, height)); |
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187 return ::CreateInstanceL(aScreenNo, aDispMode, screenInfo); |
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188 } |
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189 |
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190 /** |
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191 Depending on the current graphics hardware this |
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192 will return one of the 16M video modes defined in |
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193 TDisplayMode, or ENone if a 16M video mode is not supported. |
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194 @see TDisplayMode |
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195 @return a 16M display mode or ENone. |
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196 */ |
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197 EXPORT_C TDisplayMode CFbsDrawDevice::DisplayMode16M() |
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198 { |
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199 // return ENone; |
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200 return EColor16MA; |
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201 } |