1 /* 2 Copyright 1999, Be Incorporated. All Rights Reserved. 3 This file may be used under the terms of the Be Sample Code License. 4 5 Other authors: 6 Gerald Zajac 2007-2008 7 */ 8 9 #include "accelerant.h" 10 11 12 status_t 13 SetCursorShape(uint16 width, uint16 height, uint16 hot_x, uint16 hot_y, 14 uint8* andMask, uint8* xorMask) 15 { 16 // NOTE: Currently, for BeOS, cursor width and height must be equal to 16. 17 18 if ((width != 16) || (height != 16)) { 19 return B_ERROR; 20 } else if ((hot_x >= width) || (hot_y >= height)) { 21 return B_ERROR; 22 } else { 23 // Update cursor variables appropriately. 24 25 SharedInfo& si = *gInfo.sharedInfo; 26 si.cursorHotX = hot_x; 27 si.cursorHotY = hot_y; 28 29 if ( ! gInfo.LoadCursorImage(width, height, andMask, xorMask)) 30 return B_ERROR; 31 } 32 33 return B_OK; 34 } 35 36 37 void 38 MoveCursor(uint16 xPos, uint16 yPos) 39 { 40 // Move the cursor to the specified position on the desktop. If we're 41 // using some kind of virtual desktop, adjust the display start position 42 // accordingly and position the cursor in the proper "virtual" location. 43 44 int x = xPos; // use signed int's since chip specific functions 45 int y = yPos; // need signed int to determine if cursor off screen 46 47 SharedInfo& si = *gInfo.sharedInfo; 48 DisplayModeEx& dm = si.displayMode; 49 50 uint16 hds = dm.h_display_start; // current horizontal starting pixel 51 uint16 vds = dm.v_display_start; // current vertical starting line 52 53 // Clamp cursor to virtual display. 54 if (x >= dm.virtual_width) 55 x = dm.virtual_width - 1; 56 if (y >= dm.virtual_height) 57 y = dm.virtual_height - 1; 58 59 // Adjust h/v display start to move cursor onto screen. 60 if (x >= (dm.timing.h_display + hds)) 61 hds = x - dm.timing.h_display + 1; 62 else if (x < hds) 63 hds = x; 64 65 if (y >= (dm.timing.v_display + vds)) 66 vds = y - dm.timing.v_display + 1; 67 else if (y < vds) 68 vds = y; 69 70 // Reposition the desktop on the display if required. 71 if (hds != dm.h_display_start || vds != dm.v_display_start) 72 MoveDisplay(hds, vds); 73 74 // Put cursor in correct physical position. 75 x -= (hds + si.cursorHotX); 76 y -= (vds + si.cursorHotY); 77 78 // Position the cursor on the display. 79 gInfo.SetCursorPosition(x, y); 80 } 81 82