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5 <title>TB9.2 Example Applications: examples/Graphics/GraphicsShell/Zoom.cpp Source File</title> |
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11 <h1>examples/Graphics/GraphicsShell/Zoom.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// Copyright (c) 2000-2009 Nokia Corporation and/or its subsidiary(-ies).</span> |
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12 <a name="l00002"></a>00002 <span class="comment">// All rights reserved.</span> |
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13 <a name="l00003"></a>00003 <span class="comment">// This component and the accompanying materials are made available</span> |
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14 <a name="l00004"></a>00004 <span class="comment">// under the terms of "Eclipse Public License v1.0"</span> |
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15 <a name="l00005"></a>00005 <span class="comment">// which accompanies this distribution, and is available</span> |
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16 <a name="l00006"></a>00006 <span class="comment">// at the URL "http://www.eclipse.org/legal/epl-v10.html".</span> |
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17 <a name="l00007"></a>00007 <span class="comment">//</span> |
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18 <a name="l00008"></a>00008 <span class="comment">// Initial Contributors:</span> |
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19 <a name="l00009"></a>00009 <span class="comment">// Nokia Corporation - initial contribution.</span> |
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20 <a name="l00010"></a>00010 <span class="comment">//</span> |
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21 <a name="l00011"></a>00011 <span class="comment">// Contributors:</span> |
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22 <a name="l00012"></a>00012 <span class="comment">//</span> |
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23 <a name="l00013"></a>00013 <span class="comment">// Description:</span> |
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24 <a name="l00014"></a>00014 <span class="comment">//</span> |
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25 <a name="l00015"></a>00015 |
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26 <a name="l00016"></a>00016 <span class="preprocessor">#include "GraphicsControl.h"</span> |
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27 <a name="l00017"></a>00017 |
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28 <a name="l00018"></a>00018 <span class="comment">// header for multi-bitmap file grbitmap.mbm containing 2 bitmaps to use</span> |
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29 <a name="l00019"></a>00019 <span class="preprocessor">#include <grbmap2.mbg></span> |
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30 <a name="l00020"></a>00020 |
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31 <a name="l00021"></a>00021 <span class="preprocessor">#include <coemain.h></span> |
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32 <a name="l00022"></a>00022 |
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33 <a name="l00023"></a>00023 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtCDrive,<span class="stringliteral">"\\"</span>); |
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34 <a name="l00024"></a>00024 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtZDrive,<span class="stringliteral">"Z:"</span>); |
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35 <a name="l00025"></a>00025 |
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36 <a name="l00026"></a>00026 <span class="keywordtype">void</span> CZoomControl::LoadBitmapL(CFbsBitmap* aBitMap,<span class="keyword">const</span> TDesC& aPathAndFile,TInt aId,TBool aShareIfLoaded) |
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37 <a name="l00027"></a>00027 { |
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38 <a name="l00028"></a>00028 TParse mbfn; |
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39 <a name="l00029"></a>00029 |
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40 <a name="l00030"></a>00030 mbfn.Set(aPathAndFile,&KTxtCDrive,NULL); |
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41 <a name="l00031"></a>00031 <span class="keywordflow">if</span> (!aBitMap->Load(mbfn.FullName(),aId,aShareIfLoaded)) |
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42 <a name="l00032"></a>00032 <span class="keywordflow">return</span>; |
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43 <a name="l00033"></a>00033 |
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44 <a name="l00034"></a>00034 mbfn.Set(aPathAndFile,&KTxtZDrive,NULL); |
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45 <a name="l00035"></a>00035 User::LeaveIfError(aBitMap->Load(mbfn.FullName(),aId,aShareIfLoaded)); |
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46 <a name="l00036"></a>00036 <span class="keywordflow">return</span>; |
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47 <a name="l00037"></a>00037 } |
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48 <a name="l00038"></a>00038 |
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49 <a name="l00039"></a>00039 <span class="comment">// Name of the multi-bitmap file containing the bitmap</span> |
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50 <a name="l00040"></a>00040 <span class="comment">// and bitmap mask files</span> |
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51 <a name="l00041"></a>00041 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtFileName,<span class="stringliteral">"\\resource\\apps\\grbmap2.mbm"</span>); |
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52 <a name="l00042"></a>00042 |
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53 <a name="l00043"></a>00043 <span class="keywordtype">void</span> CZoomControl::UpdateModelL() |
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54 <a name="l00044"></a>00044 { |
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55 <a name="l00045"></a>00045 <span class="comment">// set up name for bitmap sharing</span> |
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56 <a name="l00046"></a>00046 TBool shareIfLoaded(ETrue); |
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57 <a name="l00047"></a>00047 |
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58 <a name="l00048"></a>00048 <span class="comment">// set up two zoom factor objects (one for examples, one for commentary)</span> |
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59 <a name="l00049"></a>00049 iLeftZf.SetGraphicsDeviceMap(iCoeEnv->ScreenDevice()); |
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60 <a name="l00050"></a>00050 iRightZf.SetGraphicsDeviceMap(iCoeEnv->ScreenDevice()); |
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61 <a name="l00051"></a>00051 <span class="comment">//iLeftZf.SetDevice(iCoeEnv->ScreenDevice());</span> |
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62 <a name="l00052"></a>00052 <span class="comment">//iRightZf.SetDevice(iCoeEnv->ScreenDevice());</span> |
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63 <a name="l00053"></a>00053 |
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64 <a name="l00054"></a>00054 <span class="comment">// set the zoom factor of the objects (example is dependent on phase of example, commentary is fixed)</span> |
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65 <a name="l00055"></a>00055 iLeftZf.SetZoomFactor(TZoomFactor::EZoomOneToOne*2*(Phase()+1)/5); |
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66 <a name="l00056"></a>00056 iRightZf.SetZoomFactor(TZoomFactor::EZoomOneToOne*2*(5-Phase())/5); |
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67 <a name="l00057"></a>00057 |
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68 <a name="l00058"></a>00058 <span class="comment">// use graphics device maps for drawing and getting fonts</span> |
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69 <a name="l00059"></a>00059 iLeftMap=&iLeftZf; |
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70 <a name="l00060"></a>00060 iRightMap=&iRightZf; |
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71 <a name="l00061"></a>00061 |
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72 <a name="l00062"></a>00062 <span class="keywordflow">if</span> (Phase()==0) { |
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73 <a name="l00063"></a>00063 iBitmap = <span class="keyword">new</span> (ELeave) CFbsBitmap(); |
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74 <a name="l00064"></a>00064 LoadBitmapL(iBitmap,KTxtFileName,EMbmGrbmap2Smiley,shareIfLoaded); |
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75 <a name="l00065"></a>00065 } |
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76 <a name="l00066"></a>00066 |
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77 <a name="l00067"></a>00067 <span class="comment">// set up descriptor for commentary area</span> |
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78 <a name="l00068"></a>00068 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KFormat1,<span class="stringliteral">"Left zoom factor=%1.1f:1 Right zoom factor=%1.1f:1"</span>); |
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79 <a name="l00069"></a>00069 TBuf<128> commentaryText; |
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80 <a name="l00070"></a>00070 TReal leftValue = 2*(Phase()+1)/5.0; |
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81 <a name="l00071"></a>00071 TReal rightValue = 2*(5-Phase())/5.0; |
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82 <a name="l00072"></a>00072 commentaryText.Format(KFormat1,leftValue,rightValue); |
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83 <a name="l00073"></a>00073 iGraphObserver->NotifyStatus(commentaryText); |
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84 <a name="l00074"></a>00074 }; |
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85 <a name="l00075"></a>00075 |
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86 <a name="l00076"></a>00076 <span class="keywordtype">void</span> CZoomControl::Draw(<span class="keyword">const</span> TRect& <span class="comment">/* aRect */</span>)<span class="keyword"> const</span> |
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87 <a name="l00077"></a>00077 <span class="keyword"> </span>{ |
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88 <a name="l00078"></a>00078 <span class="comment">// setup screen for example: get graphics context and draw surrounding rectangle</span> |
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89 <a name="l00079"></a>00079 CWindowGc& gc=SystemGc(); |
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90 <a name="l00080"></a>00080 gc.Clear(); |
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91 <a name="l00081"></a>00081 |
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92 <a name="l00082"></a>00082 <span class="comment">// create a centered rectangle of the default size</span> |
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93 <a name="l00083"></a>00083 TRect screenRect=Rect(); |
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94 <a name="l00084"></a>00084 TInt bisect = (screenRect.iBr.iX-screenRect.iTl.iX)/2 + screenRect.iTl.iX; |
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95 <a name="l00085"></a>00085 TRect leftRect(screenRect.iTl,TPoint(bisect,screenRect.iBr.iY)); |
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96 <a name="l00086"></a>00086 TRect rightRect(TPoint(bisect,screenRect.iTl.iY),screenRect.iBr); |
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97 <a name="l00087"></a>00087 |
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98 <a name="l00088"></a>00088 DrawLeft(leftRect,gc); |
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99 <a name="l00089"></a>00089 DrawRight(rightRect,gc); |
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100 <a name="l00090"></a>00090 } |
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101 <a name="l00091"></a>00091 |
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102 <a name="l00092"></a>00092 |
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103 <a name="l00093"></a>00093 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtTimesNewRoman,<span class="stringliteral">"Times New Roman"</span>); |
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104 <a name="l00094"></a>00094 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtGrzoomExampleText,<span class="stringliteral">"grzoom example text"</span>); |
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105 <a name="l00095"></a>00095 |
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106 <a name="l00096"></a>00096 <span class="keywordtype">void</span> CZoomControl::DrawLeft(TRect screenRect,CWindowGc& SystemGc)<span class="keyword"> const</span> |
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107 <a name="l00097"></a>00097 <span class="keyword"> </span>{ |
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108 <a name="l00098"></a>00098 <span class="comment">// set up absolute font-spec and text box for 200 twip Times font</span> |
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109 <a name="l00099"></a>00099 TFontSpec fontSpec(KTxtTimesNewRoman,200); |
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110 <a name="l00100"></a>00100 <span class="comment">// find the nearest font to the specified one</span> |
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111 <a name="l00101"></a>00101 CFont* screenFont; |
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112 <a name="l00102"></a>00102 iLeftMap->GetNearestFontInTwips(screenFont,fontSpec); |
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113 <a name="l00103"></a>00103 <span class="comment">// use it for this graphics context</span> |
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114 <a name="l00104"></a>00104 SystemGc.UseFont(screenFont); |
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115 <a name="l00105"></a>00105 <span class="comment">// get height of screen box</span> |
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116 <a name="l00106"></a>00106 TInt screenHeight=screenRect.Height(); |
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117 <a name="l00107"></a>00107 <span class="comment">// get font height</span> |
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118 <a name="l00108"></a>00108 TInt textHeight = screenFont->HeightInPixels(); |
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119 <a name="l00109"></a>00109 <span class="comment">// 1/2 font height below halfway down box</span> |
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120 <a name="l00110"></a>00110 TInt exampleOffset=(screenHeight+textHeight)/2; |
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121 <a name="l00111"></a>00111 TInt exampleMargin=0; |
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122 <a name="l00112"></a>00112 SystemGc.DrawText(KTxtGrzoomExampleText,screenRect,exampleOffset,CGraphicsContext::ECenter,exampleMargin); |
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123 <a name="l00113"></a>00113 <span class="comment">// discard and release font</span> |
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124 <a name="l00114"></a>00114 SystemGc.DiscardFont(); |
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125 <a name="l00115"></a>00115 iLeftMap->ReleaseFont(screenFont); |
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126 <a name="l00116"></a>00116 |
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127 <a name="l00117"></a>00117 <span class="comment">// set up example box in twips</span> |
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128 <a name="l00118"></a>00118 TRect boxInTwips(TPoint(0,0),TPoint(500,300)); |
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129 <a name="l00119"></a>00119 <span class="comment">// convert rectangle co-ordinates into pixels</span> |
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130 <a name="l00120"></a>00120 TRect boxInPixels = iLeftMap->TwipsToPixels(boxInTwips); |
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131 <a name="l00121"></a>00121 SystemGc.DrawRect(boxInPixels); |
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132 <a name="l00122"></a>00122 |
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133 <a name="l00123"></a>00123 <span class="comment">// set up rectangle for bitmap to be stretched into</span> |
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134 <a name="l00124"></a>00124 TRect bitmapRectInTwips(TPoint(0,0),TPoint(500,500)); |
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135 <a name="l00125"></a>00125 TRect bitmapRectInPixels = iLeftMap->TwipsToPixels(bitmapRectInTwips); |
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136 <a name="l00126"></a>00126 bitmapRectInPixels.iTl.iY+=125; |
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137 <a name="l00127"></a>00127 bitmapRectInPixels.iBr.iY+=125; |
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138 <a name="l00128"></a>00128 bitmapRectInPixels.iTl.iX+=100; |
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139 <a name="l00129"></a>00129 bitmapRectInPixels.iBr.iX+=100; |
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140 <a name="l00130"></a>00130 <span class="comment">// draw the bitmap, stretched into the rectangle</span> |
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141 <a name="l00131"></a>00131 SystemGc.DrawBitmap(bitmapRectInPixels, iBitmap); |
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142 <a name="l00132"></a>00132 } |
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143 <a name="l00133"></a>00133 |
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144 <a name="l00134"></a>00134 <span class="keywordtype">void</span> CZoomControl::DrawRight(TRect screenRect,CWindowGc& SystemGc)<span class="keyword"> const</span> |
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145 <a name="l00135"></a>00135 <span class="keyword"> </span>{ |
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146 <a name="l00136"></a>00136 <span class="comment">// set up colors: black and a white RGB color</span> |
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147 <a name="l00137"></a>00137 TRgb black(0,0,0); |
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148 <a name="l00138"></a>00138 TRgb white(255,255,255); <span class="comment">// appears as blank screen gray-green color</span> |
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149 <a name="l00139"></a>00139 SystemGc.SetBrushStyle(CGraphicsContext::ESolidBrush); |
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150 <a name="l00140"></a>00140 SystemGc.SetBrushColor(black); |
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151 <a name="l00141"></a>00141 SystemGc.SetPenColor(white); |
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152 <a name="l00142"></a>00142 |
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153 <a name="l00143"></a>00143 <span class="comment">// set up absolute font-spec and text box for 200 twip Times font</span> |
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154 <a name="l00144"></a>00144 TFontSpec fontSpec(KTxtTimesNewRoman,200); |
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155 <a name="l00145"></a>00145 <span class="comment">// find the nearest font to the specified one</span> |
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156 <a name="l00146"></a>00146 CFont* commentFont; |
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157 <a name="l00147"></a>00147 iRightMap->GetNearestFontInTwips(commentFont,fontSpec); |
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158 <a name="l00148"></a>00148 <span class="comment">// use it for this graphics context</span> |
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159 <a name="l00149"></a>00149 SystemGc.UseFont(commentFont); |
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160 <a name="l00150"></a>00150 <span class="comment">// get font height</span> |
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161 <a name="l00151"></a>00151 TInt textHeight = commentFont->HeightInPixels(); |
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162 <a name="l00152"></a>00152 <span class="comment">// get height of text box</span> |
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163 <a name="l00153"></a>00153 TInt boxHeight=screenRect.Height(); |
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164 <a name="l00154"></a>00154 <span class="comment">// 1/2 font height below halfway down box</span> |
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165 <a name="l00155"></a>00155 TInt commentOffset=(boxHeight+textHeight)/2; |
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166 <a name="l00156"></a>00156 TInt commentMargin=0; |
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167 <a name="l00157"></a>00157 <span class="comment">// draw text</span> |
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168 <a name="l00158"></a>00158 SystemGc.DrawText(KTxtGrzoomExampleText,screenRect,commentOffset,CGraphicsContext::ECenter,commentMargin); |
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169 <a name="l00159"></a>00159 <span class="comment">// discard and release font</span> |
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170 <a name="l00160"></a>00160 SystemGc.DiscardFont(); |
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171 <a name="l00161"></a>00161 iRightMap->ReleaseFont(commentFont); |
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172 <a name="l00162"></a>00162 |
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173 <a name="l00163"></a>00163 <span class="comment">// set up example box in twips</span> |
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174 <a name="l00164"></a>00164 TRect boxInTwips(TPoint(0,0),TPoint(500,300)); |
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175 <a name="l00165"></a>00165 <span class="comment">// convert rectangle co-ordinates into pixels</span> |
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176 <a name="l00166"></a>00166 TRect boxInPixels = iRightMap->TwipsToPixels(boxInTwips); |
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177 <a name="l00167"></a>00167 boxInPixels.Move(screenRect.iTl); |
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178 <a name="l00168"></a>00168 SystemGc.DrawRect(boxInPixels); |
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179 <a name="l00169"></a>00169 |
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180 <a name="l00170"></a>00170 <span class="comment">// set up rectangle for bitmap to be stretched into</span> |
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181 <a name="l00171"></a>00171 TRect bitmapRectInTwips(TPoint(0,0),TPoint(500,500)); |
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182 <a name="l00172"></a>00172 TRect bitmapRectInPixels = iRightMap->TwipsToPixels(bitmapRectInTwips); |
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183 <a name="l00173"></a>00173 bitmapRectInPixels.Move(screenRect.iTl); |
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184 <a name="l00174"></a>00174 bitmapRectInPixels.iTl.iY+=125; |
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185 <a name="l00175"></a>00175 bitmapRectInPixels.iBr.iY+=125; |
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186 <a name="l00176"></a>00176 bitmapRectInPixels.iTl.iX+=100; |
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187 <a name="l00177"></a>00177 bitmapRectInPixels.iBr.iX+=100; |
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188 <a name="l00178"></a>00178 <span class="comment">// draw the bitmap, stretched into the rectangle</span> |
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189 <a name="l00179"></a>00179 SystemGc.DrawBitmap(bitmapRectInPixels, iBitmap); |
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190 <a name="l00180"></a>00180 } |
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191 </pre></div></div> |
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