1 //------------------------------------------------------------------------------ 2 // Copyright (c) 2001-2002, Haiku, Inc. 3 // 4 // Permission is hereby granted, free of charge, to any person obtaining a 5 // copy of this software and associated documentation files (the "Software"), 6 // to deal in the Software without restriction, including without limitation 7 // the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 // and/or sell copies of the Software, and to permit persons to whom the 9 // Software is furnished to do so, subject to the following conditions: 10 // 11 // The above copyright notice and this permission notice shall be included in 12 // all copies or substantial portions of the Software. 13 // 14 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 17 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 18 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 19 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 20 // DEALINGS IN THE SOFTWARE. 21 // 22 // File Name: ServerCursor.cpp 23 // Author: DarkWyrm <bpmagic@columbus.rr.com> 24 // Stephan Aßmus <superstippi@gmx.de> 25 // Description: Glorified ServerBitmap used for cursor work. 26 // 27 //------------------------------------------------------------------------------ 28 #include "ServerCursor.h" 29 #include <stdio.h> 30 /*! 31 \brief Constructor 32 \param r Size of the cursor 33 \param cspace Color space of the cursor 34 \param flags ServerBitmap flags. See Bitmap.h. 35 \param hotspot Hotspot of the cursor 36 \param bytesperline Bytes per row for the cursor. See ServerBitmap::ServerBitmap() 37 38 */ 39 ServerCursor::ServerCursor(BRect r, color_space format, 40 int32 flags, BPoint hotspot, 41 int32 bytesPerRow, 42 screen_id screen) 43 : ServerBitmap(r, format, flags, bytesPerRow, screen), 44 fHotSpot(hotspot), 45 fOwningTeam(-1) 46 { 47 fHotSpot.ConstrainTo(Bounds()); 48 _AllocateBuffer(); 49 } 50 51 /*! 52 \brief Constructor 53 \param data Pointer to 68-byte cursor data array. See BeBook entry for BCursor for details 54 */ 55 ServerCursor::ServerCursor(const int8* data) 56 : ServerBitmap(BRect(0, 0, 15, 15), B_RGBA32, 0), 57 fHotSpot(0, 0), 58 fOwningTeam(-1) 59 { 60 // 68-byte array used in R5 for holding cursors. 61 // This API has serious problems and should be deprecated(but supported) in R2 62 63 // Now that we have all the setup, we're going to map (for now) the cursor 64 // to RGBA32. Eventually, there will be support for 16 and 8-bit depths 65 if (data) { 66 _AllocateBuffer(); 67 uint8* buffer = Bits(); 68 if (!buffer) 69 return; 70 71 fInitialized = true; 72 uint32 black = 0xFF000000; 73 uint32 white = 0xFFFFFFFF; 74 75 uint16* cursorpos = (uint16*)(data + 4); 76 uint16* maskpos = (uint16*)(data + 36); 77 fHotSpot.Set(data[3], data[2]); 78 79 uint32* bmppos; 80 uint16 cursorflip; 81 uint16 maskflip; 82 uint16 cursorval; 83 uint16 maskval; 84 uint16 powval; 85 86 // for each row in the cursor data 87 for (int32 j = 0; j < 16; j++) { 88 bmppos = (uint32*)(buffer + (j * BytesPerRow())); 89 90 // On intel, our bytes end up swapped, so we must swap them back 91 cursorflip = (cursorpos[j] & 0xFF) << 8; 92 cursorflip |= (cursorpos[j] & 0xFF00) >> 8; 93 94 maskflip = (maskpos[j] & 0xFF) << 8; 95 maskflip |= (maskpos[j] & 0xFF00) >> 8; 96 97 // for each column in each row of cursor data 98 for (int32 i = 0; i < 16; i++) { 99 // Get the values and dump them to the bitmap 100 powval = 1 << (15 - i); 101 cursorval = cursorflip & powval; 102 maskval = maskflip & powval; 103 bmppos[i] = ((cursorval != 0) ? black : white) & 104 ((maskval > 0) ? 0xFFFFFFFF : 0x00FFFFFF); 105 } 106 } 107 } else { 108 fWidth = 0; 109 fHeight = 0; 110 fBytesPerRow = 0; 111 fSpace = B_NO_COLOR_SPACE; 112 } 113 } 114 115 /*! 116 \brief Constructor 117 \param data Pointer to bitmap data in memory, the padding bytes should be contained when format less than 32 bpp. 118 */ 119 ServerCursor::ServerCursor(const uint8* alreadyPaddedData, 120 uint32 width, uint32 height, 121 color_space format) 122 : ServerBitmap(BRect(0, 0, width - 1, height - 1), format, 0), 123 fHotSpot(0, 0), 124 fOwningTeam(-1) 125 { 126 _AllocateBuffer(); 127 if (Bits()) 128 memcpy(Bits(), alreadyPaddedData, BitsLength()); 129 } 130 131 /*! 132 \brief Copy constructor 133 \param cursor cursor to copy 134 */ 135 ServerCursor::ServerCursor(const ServerCursor* cursor) 136 : ServerBitmap(cursor), 137 fHotSpot(0, 0), 138 fOwningTeam(-1) 139 { 140 // TODO: Hm. I don't move this into the if clause, 141 // because it might break code elsewhere. 142 _AllocateBuffer(); 143 144 if (cursor) { 145 fInitialized = true; 146 if (Bits() && cursor->Bits()) 147 memcpy(Bits(), cursor->Bits(), BitsLength()); 148 fHotSpot = cursor->fHotSpot; 149 } 150 } 151 152 //! Frees the heap space allocated for the cursor's image data 153 ServerCursor::~ServerCursor() 154 { 155 _FreeBuffer(); 156 } 157 158 /*! 159 \brief Sets the cursor's hotspot 160 \param pt New location of hotspot, constrained to the cursor's boundaries. 161 */ 162 void 163 ServerCursor::SetHotSpot(BPoint pt) 164 { 165 fHotSpot = pt; 166 fHotSpot.ConstrainTo(Bounds()); 167 } 168 169 // SetAppSignature 170 void 171 ServerCursor::SetAppSignature(const char* signature) 172 { 173 fAppSignature.SetTo((signature) ? signature : ""); 174 } 175