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1 /* |
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2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: Juha Kauppinen, Mika Hokkanen |
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13 * |
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14 * Description: Photo Browser |
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15 * |
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16 */ |
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17 |
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18 #include "CDrawMagGlass.h" |
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19 #include "TextureLoader.h" |
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20 #include "DrawUtility.h" |
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21 #include "ImagicConsts.h" |
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22 |
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23 |
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24 GLfixed CDrawMagGlass::iMagGlassVertices[VERTICES_PER_LINE*VERTICES_PER_LINE*3]; |
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25 GLfixed CDrawMagGlass::iMagGlassTex[VERTICES_PER_LINE*VERTICES_PER_LINE*2]; |
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26 |
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27 const TInt CDrawMagGlass::iMagGlassTriCount=(VERTICES_PER_LINE-1)*(VERTICES_PER_LINE-1)*2; |
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28 GLushort CDrawMagGlass::iMagGlassIndices[CDrawMagGlass::iMagGlassTriCount*3]; |
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29 |
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30 |
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31 |
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32 // Texture coordinate data |
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33 const GLfixed CDrawMagGlass::iGlobalTexCoords[] = |
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34 { |
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35 //bitmap has to be flipped over |
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36 0, 1<<16, |
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37 1<<16, 1<<16, |
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38 0, 0, |
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39 1<<16, 0 |
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40 }; |
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41 |
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42 CDrawMagGlass::CDrawMagGlass() |
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43 { |
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44 // No implementation required |
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45 } |
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46 |
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47 CDrawMagGlass::~CDrawMagGlass() |
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48 { |
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49 } |
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50 |
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51 CDrawMagGlass* CDrawMagGlass::NewLC(CImagicContainerBrowser* aContainer, CDrawOneByOne* aDrawOneByOne) |
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52 { |
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53 CDrawMagGlass* self = new (ELeave) CDrawMagGlass(); |
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54 CleanupStack::PushL(self); |
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55 self->ConstructL(aContainer,aDrawOneByOne); |
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56 return self; |
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57 } |
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58 |
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59 CDrawMagGlass* CDrawMagGlass::NewL(CImagicContainerBrowser* aContainer, CDrawOneByOne* aDrawOneByOne) |
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60 { |
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61 CDrawMagGlass* self = CDrawMagGlass::NewLC(aContainer,aDrawOneByOne); |
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62 CleanupStack::Pop(); // self; |
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63 return self; |
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64 } |
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65 |
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66 void CDrawMagGlass::ConstructL(CImagicContainerBrowser* aContainer, CDrawOneByOne* aDrawOneByOne) |
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67 { |
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68 iContainer = aContainer; |
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69 iDrawOneByOne = aDrawOneByOne; |
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70 } |
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71 |
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72 TReal CDrawMagGlass::GetMagGlassZoomFactor() |
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73 { |
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74 DP1_IMAGIC(_L("CDrawMagGlass::GetMagGlassZoomFactor - magGlass: %f"), iMagGlassZoomFactor); |
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75 return iMagGlassZoomFactor; |
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76 } |
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77 |
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78 /*----------------------------------------------------------------------*/ |
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79 // Interpolates given value into target value with step |
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80 // |
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81 void CDrawMagGlass::Interpolate(float &aValue, const float aTarget, const float aStep) |
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82 { |
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83 //DP0_IMAGIC(_L("CImagicContainerBrowser::Interpolate")); |
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84 // Calculate new value |
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85 float diff = aTarget-aValue; |
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86 aValue += diff * aStep * 0.2/*iTimeDiff*/ * 30; |
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87 //float timediff = Min(0.1f, iTimeDiff); // so max value of timediff is 100tick (100ms) |
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88 //aValue += diff * aStep * timediff * 30; |
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89 |
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90 // Check that value is in range |
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91 if (aValue > aTarget && diff > 0) |
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92 aValue = aTarget; |
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93 if (aValue < aTarget && diff < 0) |
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94 aValue = aTarget; |
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95 } |
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96 |
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97 void CDrawMagGlass::InitDrawMagGlass() |
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98 { |
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99 iMagGlassZoomFactor = 1; |
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100 |
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101 TInt pos=0; |
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102 for (TInt y=0; y<VERTICES_PER_LINE-1; y++) |
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103 { |
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104 TInt startvert=y*VERTICES_PER_LINE; |
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105 for (TInt x=0; x<VERTICES_PER_LINE-1; x++, pos+=6) |
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106 { |
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107 // First triangle |
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108 iMagGlassIndices[pos+0]=startvert+x; |
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109 iMagGlassIndices[pos+1]=startvert+x+1; |
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110 iMagGlassIndices[pos+2]=startvert+x+VERTICES_PER_LINE; |
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111 |
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112 // Second triangle |
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113 iMagGlassIndices[pos+3]=startvert+x+VERTICES_PER_LINE; |
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114 iMagGlassIndices[pos+4]=startvert+x+1; |
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115 iMagGlassIndices[pos+5]=startvert+x+VERTICES_PER_LINE+1; |
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116 } |
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117 } |
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118 } |
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119 |
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120 void CDrawMagGlass::DrawMagGlass(const TSize &aScreenPhysicalSize, TReal aImageAspectRatio) |
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121 { |
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122 TInt pos=0; |
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123 |
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124 #ifdef __WINS__ |
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125 // Fake touhcpoint for emulator |
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126 iContainer->iLastTouchPoint.iX=320/2; |
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127 iContainer->iLastTouchPoint.iY=240/2; |
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128 #endif |
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129 |
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130 // Calculate finger position on screen |
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131 // First calculate position on 0-1 range |
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132 GLfixed xFinger; |
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133 GLfixed yFinger; |
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134 if(iContainer->GetScreenOrientation()) |
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135 { |
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136 const TInt fingerOffset = 100; |
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137 xFinger=iContainer->iLastTouchPoint.iX*(1<<16) / aScreenPhysicalSize.iWidth; |
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138 yFinger=(iContainer->iLastTouchPoint.iY-fingerOffset)*(1<<16) / aScreenPhysicalSize.iHeight; |
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139 } |
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140 else |
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141 { |
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142 const TInt fingerOffset = 100; |
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143 xFinger=(iContainer->iLastTouchPoint.iX-fingerOffset)*(1<<16) / aScreenPhysicalSize.iWidth; |
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144 yFinger=(iContainer->iLastTouchPoint.iY)*(1<<16) / aScreenPhysicalSize.iHeight; |
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145 } |
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146 |
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147 // Move center to match OpenGL center |
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148 xFinger=-(0.5*(1<<16)-xFinger); |
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149 yFinger=0.5*(1<<16)-yFinger; |
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150 // Then scale it to opengl window size |
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151 /*xFinger=xFinger*iContainer->iDrawOnebyOneW*2; |
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152 yFinger=yFinger*iContainer->iDrawOnebyOneH*2;*/ |
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153 xFinger=xFinger*iDrawOneByOne->GetDrawOneByOneWidth()*2; |
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154 yFinger=yFinger*iDrawOneByOne->GetDrawOneByOneHeight()*2; |
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155 |
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156 |
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157 CImageData* data=iContainer->iIEngine->GetImageData(iContainer->GetCurrentIndex()); |
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158 |
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159 if((data->GetOrientation() == 0 || data->GetOrientation() == 180) && !iContainer->GetScreenOrientation()) |
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160 { |
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161 GLfixed tmpX=xFinger; |
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162 GLfixed tmpY=yFinger; |
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163 xFinger = tmpY; |
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164 yFinger = tmpX * -1; |
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165 } |
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166 else if(data->GetOrientation() == 0) |
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167 ; |
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168 else if((data->GetOrientation() == 90 || data->GetOrientation() == 270) && iContainer->GetScreenOrientation()) |
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169 { |
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170 GLfixed tmpX=xFinger; |
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171 GLfixed tmpY=yFinger; |
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172 xFinger = tmpY; |
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173 yFinger = tmpX * -1; |
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174 } |
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175 else if((data->GetOrientation() == 90 || data->GetOrientation() == 270) && !iContainer->GetScreenOrientation()) |
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176 { |
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177 xFinger = xFinger * -1; |
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178 yFinger = yFinger * -1; |
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179 } |
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180 |
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181 |
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182 //Interpolate(iMagGlassZoomFactor, 1.8, 0.05); |
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183 //const float step=0.3; |
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184 //const float step=0.2; |
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185 /* |
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186 if (iMagGlassZoomFactor < CDrawOneByOne::KMaxMagGlassZoomFactor-step) |
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187 //iDrawOneByOne->IncMagGlassZoomFactor(step); |
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188 iMagGlassZoomFactor += step; |
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189 else |
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190 //iDrawOneByOne->SetMagGlassZoomFactor(CDrawOneByOne::KMaxMagGlassZoomFactor); |
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191 iMagGlassZoomFactor = CDrawOneByOne::KMaxMagGlassZoomFactor; |
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192 */ |
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193 Interpolate(iMagGlassZoomFactor, CDrawOneByOne::KMaxMagGlassZoomFactor, 0.1); |
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194 DP1_IMAGIC(_L("CDrawMagGlass::DrawMagGlass - magGlass: %f"), iMagGlassZoomFactor); |
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195 |
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196 /*CImageData* data=iIEngine->GetImageData(iCurrentIndex, iImagicAppUi->GetUIDrawMode()); |
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197 if(data->GetOrientation() == 90 || data->GetOrientation() == 270) |
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198 aImageAspectRatio = 1/aImageAspectRatio;*/ |
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199 |
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200 // Create vertices |
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201 pos=0; |
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202 TInt texPos=0; |
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203 for (TInt y=0; y<VERTICES_PER_LINE; y++) |
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204 for (TInt x=0; x<VERTICES_PER_LINE; x++,pos+=3,texPos+=2) |
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205 { |
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206 // Calculate new vertex coordinates |
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207 // First, calculate center |
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208 GLfixed xCoord= x; |
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209 GLfixed yCoord=-y; |
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210 GLfixed zCoord= 0; |
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211 // Then convert to fixed point |
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212 xCoord*=(1<<16)/(VERTICES_PER_LINE-1); |
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213 yCoord*=(1<<16)/(VERTICES_PER_LINE-1); |
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214 // shift 0.5 to locate image center at (0,0) |
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215 xCoord -= (1<<15); |
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216 yCoord += (1<<15); |
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217 |
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218 // Set aspect ratio |
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219 if (aImageAspectRatio > 1) |
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220 yCoord *= (1/aImageAspectRatio); |
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221 else |
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222 xCoord *= (1*aImageAspectRatio); |
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223 |
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224 |
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225 // Zoom ball sizes |
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226 const float ballSize=0.35; // Zoom ball size |
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227 const float zoomSize=0.2; // Sharp zoom size, has to be at least 0.1 smaller bigger than ball size |
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228 // Calculate squared values |
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229 const GLfixed ballSizeSquared=(ballSize*(1<<8))*(ballSize*(1<<8)); |
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230 const GLfixed zoomSizeSquared=(zoomSize*(1<<8))*(zoomSize*(1<<8)); |
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231 |
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232 // Calculate distance to finger with both axis |
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233 GLfixed xDist=xFinger-xCoord; |
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234 GLfixed yDist=yFinger-yCoord; |
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235 // Calculate squared distance with phytagoras |
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236 GLfixed dist=(xDist/(1<<8))*(xDist/(1<<8)) + (yDist/(1<<8))*(yDist/(1<<8)); |
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237 |
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238 // Are we close enough |
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239 if (dist < ballSizeSquared) |
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240 { |
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241 // Zoom factor |
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242 //const float iMagGlassZoomFactor=1.8; |
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243 |
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244 // Determine proper zoom for this vertex |
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245 //float zoom=iContainer->iMagGlassZoomFactor; |
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246 float zoom=iMagGlassZoomFactor; |
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247 |
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248 if (dist > zoomSizeSquared) |
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249 { |
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250 // We are between sharp zoom and ball edge |
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251 // Calculat escale factor for zoom |
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252 float scale=((float)(dist-zoomSizeSquared))/(ballSizeSquared-zoomSizeSquared); |
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253 zoom=(zoom-1)*(1.0-scale)+1; |
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254 } |
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255 |
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256 // Calculate new axis distances with zoom |
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257 xDist*=zoom; |
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258 yDist*=zoom; |
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259 // Calculate new coordinates based on distances |
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260 xCoord=xFinger-xDist; |
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261 yCoord=yFinger-yDist; |
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262 zCoord=128; // Set coordinate a bit above of original picture |
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263 } |
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264 |
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265 // Store vertex data |
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266 iMagGlassVertices[pos+0]=xCoord; |
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267 iMagGlassVertices[pos+1]=yCoord; |
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268 iMagGlassVertices[pos+2]=zCoord; |
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269 |
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270 // Set texture coodrinates |
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271 iMagGlassTex[texPos+0]=x*(1<<16)/(VERTICES_PER_LINE-1); |
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272 iMagGlassTex[texPos+1]=y*(1<<16)/(VERTICES_PER_LINE-1); |
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273 } |
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274 |
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275 glEnable(GL_DEPTH_TEST); |
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276 glEnable(GL_CULL_FACE); |
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277 glCullFace(GL_FRONT); |
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278 |
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279 // Set vertex and texture coordinates and draw |
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280 glVertexPointer(3, GL_FIXED, 0, iMagGlassVertices); |
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281 glTexCoordPointer(2, GL_FIXED, 0, iMagGlassTex); |
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282 glDrawElements(GL_TRIANGLES,iMagGlassTriCount*3,GL_UNSIGNED_SHORT,iMagGlassIndices); |
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283 //glDrawElements(GL_LINES,triCount*3,GL_UNSIGNED_SHORT,indices); |
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284 |
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285 glDisable(GL_CULL_FACE); |
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286 glDisable(GL_DEPTH_TEST); |
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287 } |
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288 |