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1 // Copyright (c) 1997-2009 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 // |
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15 |
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16 #include <bitdev.h> |
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17 #include <bitdraw.h> |
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18 #include <bitdrawscaling.h> |
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19 #include <bitdrawinterfaceid.h> |
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20 #include "BITPANIC.H" |
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21 |
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22 const TInt KMaxPixelSize = KMaxTInt / 4; // Maximum pixel size to avoid some overflow problems |
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23 |
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24 CFbsBitmapDevice::CFbsBitmapDevice(): |
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25 CFbsDevice() |
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26 {} |
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27 |
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28 |
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29 /** Frees all resources owned by the object prior to its destruction. */ |
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30 EXPORT_C CFbsBitmapDevice::~CFbsBitmapDevice() |
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31 { |
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32 delete iFbsBmp; |
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33 } |
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34 |
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35 |
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36 /** Constructs the object from the specified Font and Bitmap server |
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37 managed bitmap. |
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38 |
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39 @param aFbsBitmap A pointer to a Font and Bitmap server managed bitmap. |
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40 @param aLibname Name of the library to create the low-level CFbsDrawDevice |
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41 object from. |
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42 @return A pointer to the newly constructed graphics device. */ |
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43 EXPORT_C CFbsBitmapDevice* CFbsBitmapDevice::NewL(CFbsBitmap* aFbsBitmap, |
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44 const TDesC& /*aLibname*/) |
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45 { |
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46 return CFbsBitmapDevice::NewL(aFbsBitmap); |
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47 } |
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48 |
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49 /** Allocates and constructs the device with the bitmap. Also creates a 2D graphics |
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50 accelerator which is owned and used by the device. |
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51 |
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52 @param aFbsBitmap A pointer to the font and bitmap server managed bitmap. |
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53 @leave KErrArgument The bitmap's handle is zero. |
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54 @leave KErrAccessDenied The bitmap is in the ROM. |
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55 @return A pointer to the newly constructed device. |
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56 @panic EBitgdiPanicInvalidBitmap aFbsBitmap is NULL. */ |
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57 EXPORT_C CFbsBitmapDevice* CFbsBitmapDevice::NewL(CFbsBitmap* aFbsBitmap) |
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58 { |
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59 BG_ASSERT_ALWAYS(aFbsBitmap != NULL,EBitgdiPanicInvalidBitmap); |
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60 |
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61 CFbsBitmapDevice* self = new(ELeave) CFbsBitmapDevice; |
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62 CleanupStack::PushL(self); |
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63 self->ConstructL(aFbsBitmap); |
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64 CleanupStack::Pop(); // self |
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65 return self; |
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66 } |
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67 |
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68 void CFbsBitmapDevice::ConstructL(CFbsBitmap* aFbsBitmap) |
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69 { |
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70 if(!aFbsBitmap->Handle()) |
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71 User::Leave(KErrArgument); |
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72 if(aFbsBitmap->IsRomBitmap()) |
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73 User::Leave(KErrAccessDenied); |
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74 |
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75 iTypefaceStore = CFbsTypefaceStore::NewL(this); |
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76 iFbsBmp = new(ELeave) CFbsBitGcBitmap; |
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77 User::LeaveIfError(iFbsBmp->Duplicate(aFbsBitmap->Handle())); |
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78 const TDisplayMode dispMode = iFbsBmp->DisplayMode(); |
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79 |
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80 iDrawDevice = CFbsDrawDevice::NewBitmapDeviceL(iFbsBmp->SizeInPixels(), dispMode, iFbsBmp->DataStride()); |
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81 |
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82 TInt hwHandle = aFbsBitmap->HardwareBitmapHandle(); |
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83 if(hwHandle) |
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84 { |
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85 TRAP_IGNORE(iGraphicsAccelerator = CHardwareGraphicsAccelerator::NewL(RHardwareBitmap(hwHandle))); |
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86 } |
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87 if (iGraphicsAccelerator==NULL) |
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88 { |
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89 TRAP_IGNORE(iGraphicsAccelerator = CSoftwareGraphicsAccelerator::NewL(iFbsBmp)); |
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90 } |
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91 } |
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92 |
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93 /** Resizes the device. |
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94 |
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95 @param aSize The new size in pixels. |
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96 @return KErrNone, if successful; otherwise another of the system-wide error |
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97 codes. */ |
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98 EXPORT_C TInt CFbsBitmapDevice::Resize(const TSize& aSize) |
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99 { |
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100 if(!iDrawDevice || !iFbsBmp) |
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101 return(KErrGeneral); |
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102 |
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103 if(aSize.iWidth < 0 || aSize.iHeight < 0) |
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104 return KErrArgument; |
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105 |
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106 if (aSize.iWidth > KMaxPixelSize || aSize.iHeight > KMaxPixelSize) |
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107 return KErrTooBig; |
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108 |
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109 if (iFbsBmp->HardwareBitmapHandle()) |
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110 { |
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111 return KErrNotSupported; |
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112 } |
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113 |
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114 const TDisplayMode dispMode = iFbsBmp->DisplayMode(); |
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115 CFbsDrawDevice* drawDevice = NULL; |
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116 TRAPD(err, drawDevice = CFbsDrawDevice::NewBitmapDeviceL(aSize, dispMode, CFbsBitmap::ScanLineLength(aSize.iWidth, dispMode))); |
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117 if (err != KErrNone) |
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118 return err; |
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119 |
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120 TInt ret = iFbsBmp->Resize(aSize); |
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121 if (ret != KErrNone) |
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122 { |
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123 delete drawDevice; |
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124 return ret; |
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125 } |
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126 |
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127 delete iDrawDevice; |
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128 drawDevice->SetBits(NULL); |
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129 iDrawDevice = drawDevice; |
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130 iOrientation = CFbsBitGc::EGraphicsOrientationNormal; |
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131 |
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132 // Now get a new GraphicsAccelerator but it doesn't matter if we fail, we can work without one |
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133 delete iGraphicsAccelerator; |
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134 iGraphicsAccelerator = NULL; |
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135 TRAP_IGNORE(iGraphicsAccelerator = CSoftwareGraphicsAccelerator::NewL(iFbsBmp)); |
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136 return KErrNone; |
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137 } |
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138 |
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139 /** |
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140 This method is called when you are about to start direct drawing to the bitmap memory. |
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141 Calls to DrawingBegin() must be paired with a subsequent call to DrawingEnd(). |
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142 Also, code must not leave between a DrawingBegin() - DrawingEnd() pair. |
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143 @param aAlways Not used. |
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144 |
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145 @see CFbsBitmapDevice::DrawingEnd() |
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146 */ |
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147 EXPORT_C void CFbsBitmapDevice::DrawingBegin(TBool /*aAlways*/) |
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148 { |
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149 iFbsBmp->BeginDataAccess(); |
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150 SetBits(); |
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151 } |
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152 |
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153 /** |
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154 This method is called when you have finished direct drawing to the bitmap memory. |
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155 Calls to DrawingEnd() must correspond to a prior call to DrawingBegin(). |
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156 @param aAlways Not used. |
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157 |
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158 @see CFbsBitmapDevice::DrawingBegin() |
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159 */ |
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160 EXPORT_C void CFbsBitmapDevice::DrawingEnd(TBool /*aAlways*/) |
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161 { |
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162 iDrawDevice->SetBits(NULL); |
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163 iFbsBmp->EndDataAccess(EFalse); |
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164 } |
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165 |
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166 void CFbsBitmapDevice::SetBits() |
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167 { |
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168 #ifdef _DEBUG |
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169 // Bitmap devices only support normal orientation |
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170 TInt devHeight = iDrawDevice->SizeInPixels().iHeight; |
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171 MScalingSettings* scaling; |
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172 if (iDrawDevice->GetInterface(KScalingSettingsInterfaceID, (TAny*&)scaling) == KErrNone) |
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173 { |
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174 TInt factorX, factorY, divisorX, divisorY; |
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175 scaling->Get(factorX, factorY, divisorX, divisorY); |
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176 // Both divisorX and divisorY should be 1 |
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177 if (factorY > 1) |
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178 { |
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179 devHeight = (devHeight - 1) * factorY + 1; |
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180 } |
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181 } |
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182 #endif |
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183 BG_ASSERT_DEBUG(iFbsBmp->DataStride() == iDrawDevice->ScanLineBytes(), EBitgdiPanicInvalidBitmap); |
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184 BG_ASSERT_DEBUG(iFbsBmp->SizeInPixels().iHeight >= devHeight, EBitgdiPanicInvalidBitmap); |
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185 TUint32* data = iFbsBmp->DataAddress(); |
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186 BG_ASSERT_ALWAYS(data, EBitgdiPanicInvalidBitmap); |
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187 iDrawDevice->SetBits(data); |
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188 } |
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189 |
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190 |
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191 /** Copies a scanline into a buffer. |
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192 |
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193 The function provides a concrete implementation of the pure virtual |
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194 function CBitmapDevice::GetScanLine(). */ |
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195 EXPORT_C void CFbsBitmapDevice::GetScanLine(TDes8& aBuf, |
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196 const TPoint& aPixel, |
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197 TInt aLength, |
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198 TDisplayMode aDispMode) const |
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199 { |
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200 iFbsBmp->BeginDataAccess(); |
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201 CONST_CAST(CFbsBitmapDevice*,this)->SetBits(); |
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202 CONST_CAST(CFbsBitmapDevice*,this)->DoGetScanLine(aBuf,aPixel,aLength,aDispMode); |
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203 iFbsBmp->EndDataAccess(ETrue); |
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204 } |
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205 |
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206 /** Gets the RGB colour of an individual pixel on a bitmapped graphics |
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207 device. |
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208 |
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209 The function provides a concrete implementation of the pure virtual |
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210 function CBitmapDevice::GetPixel(). */ |
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211 EXPORT_C void CFbsBitmapDevice::GetPixel(TRgb& aColor,const TPoint& aPoint) const |
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212 { |
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213 TRect deviceRect; |
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214 iDrawDevice->GetDrawRect(deviceRect); |
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215 if (!deviceRect.Contains(aPoint)) |
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216 return; |
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217 |
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218 iFbsBmp->BeginDataAccess(); |
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219 ((CFbsBitmapDevice*)this)->SetBits(); |
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220 aColor = iDrawDevice->ReadPixel(aPoint.iX,aPoint.iY); |
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221 iFbsBmp->EndDataAccess(ETrue); |
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222 } |
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223 |
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224 |
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225 /** Converts a horizontal dimension of a device in pixels to a horizontal |
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226 dimension in twips. |
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227 |
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228 The function provides a concrete implementation of the pure virtual |
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229 function MGraphicsDeviceMap::HorizontalPixelsToTwips(). */ |
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230 EXPORT_C TInt CFbsBitmapDevice::HorizontalPixelsToTwips(TInt aPixels) const |
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231 { |
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232 return iFbsBmp->HorizontalPixelsToTwips(aPixels); |
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233 } |
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234 |
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235 |
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236 /** Converts a vertical dimension of a device in pixels to a vertical |
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237 dimension in twips. |
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238 |
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239 The function provides a concrete implementation of the pure virtual |
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240 function MGraphicsDeviceMap::VerticalPixelsToTwips(). */ |
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241 EXPORT_C TInt CFbsBitmapDevice::VerticalPixelsToTwips(TInt aPixels) const |
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242 { |
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243 return iFbsBmp->VerticalPixelsToTwips(aPixels); |
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244 } |
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245 |
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246 |
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247 /** Gets the size of the device, in twips. |
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248 |
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249 @return The size of the device. */ |
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250 EXPORT_C TSize CFbsBitmapDevice::SizeInTwips() const |
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251 { |
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252 return iFbsBmp->SizeInTwips(); |
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253 } |
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254 |
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255 /** Converts a horizontal dimension of a device in twips to a horizontal |
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256 dimension in pixels. |
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257 |
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258 The function provides a concrete implementation of the pure virtual |
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259 function MGraphicsDeviceMap::HorizontalTwipsToPixels(). */ |
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260 EXPORT_C TInt CFbsBitmapDevice::HorizontalTwipsToPixels(TInt aTwips) const |
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261 { |
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262 return iFbsBmp->HorizontalTwipsToPixels(aTwips); |
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263 } |
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264 |
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265 |
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266 /** Converts a vertical dimension of a device in twips to a vertical |
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267 dimension in pixels. |
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268 |
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269 The function provides a concrete implementation of the pure virtual |
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270 function MGraphicsDeviceMap::VerticalTwipsToPixels(). */ |
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271 EXPORT_C TInt CFbsBitmapDevice::VerticalTwipsToPixels(TInt aTwips) const |
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272 { |
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273 return iFbsBmp->VerticalTwipsToPixels(aTwips); |
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274 } |
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275 |
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276 |
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277 /** Gets the palette attributes of the device. |
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278 |
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279 The function provides a concrete implementation of the pure virtual |
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280 function CGraphicsDevice::PaletteAttributes(). */ |
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281 EXPORT_C void CFbsBitmapDevice::PaletteAttributes(TBool& aModifiable,TInt& aNumEntries) const |
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282 { |
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283 aModifiable = (iDrawDevice->DisplayMode() == EColor256); |
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284 aNumEntries = TDisplayModeUtils::NumDisplayModeColors(iDrawDevice->DisplayMode()); |
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285 } |
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286 |
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287 /** Sets the device's palette to the specified palette. |
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288 |
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289 Setting the palette is only possible if the device has a modifiable palette, |
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290 which can be determined by calling PaletteAttributes(). |
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291 |
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292 The function provides a concrete implementation of the pure virtual |
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293 function CGraphicsDevice::SetPalette(). */ |
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294 EXPORT_C void CFbsBitmapDevice::SetPalette(CPalette* aPalette) |
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295 { |
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296 SetCustomPalette(aPalette); // Have to ignore error for compatibility |
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297 } |
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298 |
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299 |
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300 /** Gets the device's current palette. |
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301 |
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302 This function is only supported if the device has a modifiable palette, |
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303 which can be determined by calling PaletteAttributes(). |
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304 |
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305 The function provides a concrete implementation of the pure virtual |
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306 function CGraphicsDevice::GetPalette(). */ |
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307 EXPORT_C TInt CFbsBitmapDevice::GetPalette(CPalette*& aPalette) const |
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308 { |
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309 return iDrawDevice->GetCustomPalette(aPalette); |
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310 } |
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311 |
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312 /** |
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313 The method swaps bitmap device's width and height. |
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314 For example: if the size is (40, 20), the swapped size will be (20, 40). |
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315 The device's content is not preserved. |
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316 The method leaves CFbsBitmapDevice object in a consistent state - |
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317 scaling settings will be set with their default values (the scaling is switched off), |
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318 the device's dither origin will be set to (0,0), scaling origin to (0,0). |
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319 |
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320 Note: If the device was scaled or its dither origin was set with a non-default value, |
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321 it has to be rescaled again, respectivelly the dither origin has to be set again. |
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322 |
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323 Note: All graphics contexts, already created by the device, should be |
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324 re-activated calling CFbsBitGc::Activate(). |
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325 |
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326 Note: Do not call SwapWidthAndHeight() between DrawingBegin() and DrawingEnd() calls! |
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327 |
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328 @return KErrNone The call was successfull. |
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329 @return KErrAccessDenied ROM bitmap size can't be swapped. |
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330 @return KErrNotSupported Hardware bitmap size can't be swapped. |
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331 @return KErrGeneral iDrawDevice or iFbsBmp is NULL. |
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332 */ |
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333 EXPORT_C TInt CFbsBitmapDevice::SwapWidthAndHeight() |
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334 { |
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335 if(!iDrawDevice || !iFbsBmp) |
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336 { |
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337 return KErrGeneral; |
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338 } |
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339 TInt err = iFbsBmp->SwapWidthAndHeight(); |
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340 if(err == KErrNone) |
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341 { |
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342 iDrawDevice->SwapWidthAndHeight(); |
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343 } |
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344 return err; |
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345 } |
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346 |
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347 |
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348 /** |
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349 Required to ensure BC between NGage and 7.0S platforms. |
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350 Functions are exported at ordinal corresponding to where NGage platform |
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351 has extended this library and must not be moved. |
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352 */ |
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353 EXPORT_C void DummyReserved1() |
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354 { |
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355 User::Panic(_L("Dummy Function"), 0); |
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356 } |
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357 EXPORT_C void DummyReserved2() |
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358 { |
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359 User::Panic(_L("Dummy Function"), 0); |
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360 } |
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361 EXPORT_C void DummyReserved3() |
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362 { |
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363 User::Panic(_L("Dummy Function"), 0); |
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364 } |
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365 EXPORT_C void DummyReserved4() |
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366 { |
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367 User::Panic(_L("Dummy Function"), 0); |
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368 } |
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369 EXPORT_C void DummyReserved5() |
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370 { |
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371 User::Panic(_L("Dummy Function"), 0); |
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372 } |
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373 EXPORT_C void DummyReserved6() |
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374 { |
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375 User::Panic(_L("Dummy Function"), 0); |
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376 } |
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377 EXPORT_C void DummyReserved7() |
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378 { |
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379 User::Panic(_L("Dummy Function"), 0); |
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380 } |
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381 EXPORT_C void DummyReserved8() |
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382 { |
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383 User::Panic(_L("Dummy Function"), 0); |
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384 } |
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385 EXPORT_C void DummyReserved9() |
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386 { |
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387 User::Panic(_L("Dummy Function"), 0); |
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388 } |
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389 EXPORT_C void DummyReserved10() |
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390 { |
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391 User::Panic(_L("Dummy Function"), 0); |
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392 } |