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1 // Copyright (c) 1995-2009 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 // Window redraw code, three sorts of redrawing are supported |
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15 // This class deals with drawing from backup bitmap |
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16 // |
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17 // |
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18 |
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19 #include "backedupwindow.h" |
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20 #include "server.h" |
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21 #include "gc.h" |
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22 #include "wstop.h" |
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23 #include "ANIM.H" |
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24 #include "EVQUEUE.H" |
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25 #include <s32mem.h> |
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26 #include <gdi.h> |
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27 #include "panics.h" |
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28 #include "inifile.h" |
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29 #include "rootwin.h" |
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30 #include "EVENT.H" |
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31 #include "playbackgc.h" |
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32 #include "devicemap.h" |
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33 |
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34 CFbsBitGc *CWsBackedUpWindow::iBitGc=NULL; |
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35 |
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36 CWsBackedUpWindow::CWsBackedUpWindow(CWsWindow *aWin, TDisplayMode aDisplayMode) |
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37 : CWsWindowRedraw(aWin), iDisplayMode(aDisplayMode) |
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38 {} |
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39 |
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40 void CWsBackedUpWindow::StaticInitL() |
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41 { |
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42 iBitGc=CFbsBitGc::NewL(); |
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43 } |
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44 |
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45 void CWsBackedUpWindow::StaticDestroy() |
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46 { |
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47 delete iBitGc; |
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48 iBitGc = 0; |
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49 } |
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50 |
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51 void CWsBackedUpWindow::ActivateGc() |
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52 { |
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53 iBitGc->Activate(iBitmapDevice); |
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54 iBitGc->Reset(); |
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55 iBitGc->SetBrushColor(BackColor()); |
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56 } |
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57 |
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58 TBool CWsBackedUpWindow::DrawCommand(CWsGc*,const TAny*) |
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59 { |
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60 if (Screen()->ChangeTracking()) |
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61 MarkDirtyAndSchedule(iCurrentRegion); |
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62 else |
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63 Screen()->AddRedrawRegion(iWsWin->VisibleRegion()); |
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64 |
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65 return ETrue; |
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66 } |
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67 |
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68 void CWsBackedUpWindow::ConstructL() |
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69 { |
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70 iDisplayMode=iWsWin->SetRequiredDisplayModeL(iDisplayMode); |
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71 TSize size=iWsWin->Size(); |
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72 iBitmap=new(ELeave) CFbsBitmap(); |
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73 User::LeaveIfError(iBitmap->Create(size, iDisplayMode)); |
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74 iBitmapDevice=CFbsBitmapDevice::NewL(iBitmap); |
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75 SetSizeInTwips(); |
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76 // |
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77 ActivateGc(); |
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78 iBitGc->SetDrawMode(CGraphicsContext::EDrawModeWriteAlpha); |
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79 iBitGc->Clear(TRect(size)); |
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80 iBitGc->SetDrawMode(CGraphicsContext::EDrawModePEN); |
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81 WS_ASSERT_DEBUG(iWsWin->WinType()==EWinTypeClient,EWsPanicWindowType); |
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82 } |
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83 |
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84 void CWsBackedUpWindow::PrepareForResizeL(const TSize &aSize, TSize &aOldSize) |
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85 { |
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86 aOldSize=iBitmapDevice->SizeInPixels(); |
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87 if (aOldSize!=aSize) |
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88 { |
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89 User::LeaveIfError(iBitmapDevice->Resize(aSize)); |
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90 SetSizeInTwips(); |
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91 } |
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92 } |
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93 |
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94 void CWsBackedUpWindow::Resize(const TSize &aSize, const TSize &aOldSize) |
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95 { |
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96 ActivateGc(); |
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97 iBitGc->SetClippingRegion(NULL); |
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98 iBitGc->Clear(TRect(aOldSize.iWidth, 0, aSize.iWidth, aOldSize.iHeight)); |
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99 iBitGc->Clear(TRect(0, aOldSize.iHeight,aSize.iWidth, aSize.iHeight)); |
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100 |
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101 static_cast<CWsClientWindow *>(iWsWin)->ReactivateGcs(); |
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102 |
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103 if(Screen()->ChangeTracking()) |
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104 { |
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105 //Keep track of the region we need to refresh when we recieve draw commands |
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106 iCurrentRegion.Reset(); |
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107 iCurrentRegion.Copy(iWsWin->WindowArea()); |
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108 iCurrentRegion.Offset(-iWsWin->Origin()); |
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109 iCurrentRegion.Tidy(); |
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110 if(iCurrentRegion.CheckError()) |
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111 { |
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112 iCurrentRegion.Reset(); |
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113 TRegionFix<1> fallback(iWsWin->AbsRect()); |
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114 iCurrentRegion.Copy(fallback); |
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115 iCurrentRegion.Offset(-iWsWin->Origin()); |
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116 } |
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117 |
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118 //If the window has nerver been drawn to screen, we now schedule the initial draw. This can't |
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119 //be done in ConstructL because BackedUpWindows are created with size(0,0). And we can't check |
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120 //iWsWin->IsActive() because the client might activate the window before giving it a size. |
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121 if (!iHasBeenScheduled) |
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122 { |
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123 iHasBeenScheduled = ETrue; |
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124 MarkDirtyAndSchedule(iCurrentRegion); |
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125 } |
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126 } |
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127 } |
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128 |
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129 CWsBackedUpWindow::~CWsBackedUpWindow() |
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130 { |
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131 iCurrentRegion.Reset(); |
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132 delete iBitmapDevice; |
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133 delete iBitmap; |
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134 } |
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135 |
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136 TBool CWsBackedUpWindow::CommandL(TInt aOpcode, TWsWinCmdUnion &aCmd) |
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137 { |
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138 switch(aOpcode) |
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139 { |
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140 case EWsWinOpUpdateBackupBitmap: |
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141 break; |
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142 case EWsWinOpMaintainBackup: |
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143 break; |
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144 case EWsWinOpBitmapHandle: |
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145 SetReply(iBitmap->Handle()); |
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146 break; |
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147 case EWsWinOpUpdateScreen: |
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148 { |
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149 TRegionFix<1> fixRegion(iWsWin->AbsRect()); |
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150 UpdateScreen(fixRegion); |
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151 } |
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152 break; |
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153 case EWsWinOpUpdateScreenRegion: |
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154 { |
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155 RWsRegion *clientRegion=NULL; |
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156 TRAPD(err,clientRegion=GetRegionFromClientL(iWsWin->WsOwner(), *aCmd.Int)); |
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157 if (err==KErrNone && !clientRegion->CheckError()) |
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158 { |
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159 clientRegion->Offset(iWsWin->Origin()); |
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160 clientRegion->ClipRect(iWsWin->AbsRect()); |
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161 UpdateScreen(*clientRegion); |
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162 } |
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163 else |
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164 { |
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165 TRegionFix<1> fixRegion(iWsWin->AbsRect()); |
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166 UpdateScreen(fixRegion); |
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167 } |
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168 clientRegion->Destroy(); |
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169 } |
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170 break; |
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171 case EWsWinOpSetBackgroundSurface: |
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172 case EWsWinOpSetBackgroundSurfaceConfig: |
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173 case EWsWinOpGetBackgroundSurfaceConfig: |
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174 OwnerPanic(EWservPanicDrawable); // Backed up windows don't support these |
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175 break; |
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176 default: |
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177 return(EFalse); |
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178 } |
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179 return(ETrue); |
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180 } |
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181 |
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182 CWsBackedUpWindow *CWsBackedUpWindow::Backup() const |
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183 { |
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184 return((CWsBackedUpWindow *)this); |
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185 } |
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186 |
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187 CFbsDevice* CWsBackedUpWindow::OutputDevice() const |
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188 { |
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189 return iBitmapDevice; |
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190 } |
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191 |
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192 TRgb CWsBackedUpWindow::BackColor() const |
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193 { |
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194 return(iWsWin->RootWindow()->DefaultBackgroundColor()); |
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195 } |
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196 |
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197 void CWsBackedUpWindow::Scroll(const TRect &aClipRect, const TPoint &aOffset,const TRect &aRect) |
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198 { |
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199 TRect winBorder=TRect(iWsWin->Size()); |
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200 TRect clipRect=aClipRect; |
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201 TRect srcRect = aRect; |
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202 clipRect.Intersection(winBorder); |
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203 if (!clipRect.IsEmpty()) |
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204 { // If we have to do something (a visible part will change) |
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205 srcRect.Intersection(clipRect); |
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206 |
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207 STACK_REGION regionToClear; |
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208 regionToClear.AddRect(aRect); |
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209 regionToClear.SubRect(srcRect); |
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210 regionToClear.Offset(aOffset); |
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211 |
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212 ActivateGc(); |
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213 iBitGc->SetClippingRect(clipRect); |
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214 iBitGc->SetDrawMode(CGraphicsContext::EDrawModeWriteAlpha); |
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215 iBitGc->CopyRect(aOffset,srcRect); |
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216 for (TInt k=0;k<regionToClear.Count();k++) |
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217 { |
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218 iBitGc->Clear(regionToClear[k]); |
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219 } |
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220 iBitGc->SetClippingRect(winBorder); |
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221 iBitGc->SetDrawMode(CGraphicsContext::EDrawModePEN); |
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222 TRegionFix<1> fixRegion(iWsWin->AbsRect()); |
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223 UpdateScreen(fixRegion); |
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224 regionToClear.Close(); |
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225 } |
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226 } |
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227 |
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228 TBool CWsBackedUpWindow::NeedsRedraw() const |
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229 { |
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230 return(EFalse); |
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231 } |
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232 |
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233 TBool CWsBackedUpWindow::GetRedrawRect(TRect &) const |
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234 { |
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235 return(EFalse); |
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236 } |
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237 |
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238 void CWsBackedUpWindow::SetSizeInTwips() |
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239 { |
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240 TSize size=iBitmap->SizeInPixels(); |
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241 size.iWidth=Screen()->DeviceMap().HorizontalPixelsToTwips(size.iWidth); |
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242 size.iHeight=Screen()->DeviceMap().VerticalPixelsToTwips(size.iHeight); |
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243 iBitmap->SetSizeInTwips(size); |
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244 } |
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245 |
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246 void CWsBackedUpWindow::DrawWindow() |
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247 { |
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248 MWsGraphicsContext* gc = static_cast<MWsGraphicsContext*>(CPlaybackGc::Instance()->ResolveObjectInterface(KMWsGraphicsContext)); |
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249 |
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250 gc->SetOrigin(iWsWin->Origin()); |
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251 gc->SetClippingRegion(*iRedrawRegion); |
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252 gc->BitBlt(TPoint(0,0), *iBitmap); |
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253 } |
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254 |
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255 /** |
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256 This function updates the window's dirty region and schedules a redraw if needed. |
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257 Only used when the screen is run in CHANGETRACKING mode. |
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258 @param aRegion in window coordinates |
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259 */ |
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260 void CWsBackedUpWindow::MarkDirtyAndSchedule(const TRegion& aRegion) |
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261 { |
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262 WS_ASSERT_DEBUG(Screen()->ChangeTracking(),EWsPanicNoChangetracking); |
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263 |
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264 if(!aRegion.IsEmpty()) |
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265 { |
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266 iWsWin->AddDirtyWindowRegion(aRegion); |
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267 if (iWsWin->IsActive() && iWsWin->IsVisible()) |
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268 { |
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269 Screen()->ScheduleWindow(iWsWin); |
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270 } |
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271 } |
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272 } |
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273 |
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274 /** |
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275 This function selects the desired behaviour depending on whether the screen is |
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276 run in CHANGETRACKING mode or not. |
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277 @param aRegion in screen coordinates |
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278 */ |
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279 void CWsBackedUpWindow::UpdateScreen(const TRegion& aRegion) |
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280 { |
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281 if (Screen()->ChangeTracking()) |
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282 { |
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283 STACK_REGION region; |
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284 region.Copy(aRegion); |
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285 region.Offset(-WsWin()->Origin()); //convert to window coordinates |
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286 MarkDirtyAndSchedule(region); |
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287 region.Close(); |
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288 } |
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289 else |
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290 { |
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291 Screen()->AddRedrawRegion(aRegion); |
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292 } |
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293 } |