summaryrefslogtreecommitdiff
path: root/src/glut/fbdev/cursor.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/glut/fbdev/cursor.c')
-rw-r--r--src/glut/fbdev/cursor.c272
1 files changed, 0 insertions, 272 deletions
diff --git a/src/glut/fbdev/cursor.c b/src/glut/fbdev/cursor.c
deleted file mode 100644
index 4bb2b7fba0..0000000000
--- a/src/glut/fbdev/cursor.c
+++ /dev/null
@@ -1,272 +0,0 @@
-/*
- * Mesa 3-D graphics library
- * Version: 6.5
- * Copyright (C) 1995-2006 Brian Paul
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the Free
- * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-/*
- * Library for glut using mesa fbdev driver
- *
- * Written by Sean D'Epagnier (c) 2006
- */
-
-/* these routines are written to access graphics memory directly, not using mesa
- to render the cursor, this is faster, it would be good to use a hardware
- cursor if it exists instead */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <inttypes.h>
-#include <string.h>
-
-#include <linux/fb.h>
-
-#include <GL/glut.h>
-
-#include "internal.h"
-#include "cursors.h"
-
-int CurrentCursor = GLUT_CURSOR_LEFT_ARROW;
-
-static int LastMouseX, LastMouseY;
-static unsigned char *MouseBuffer;
-
-void InitializeCursor(void)
-{
- if(!MouseBuffer && (MouseBuffer = malloc(CURSOR_WIDTH * CURSOR_HEIGHT
- * VarInfo.bits_per_pixel / 8)) == NULL) {
- sprintf(exiterror, "malloc failure\n");
- exit(0);
- }
-
- MouseX = VarInfo.xres / 2;
- MouseY = VarInfo.yres / 2;
-}
-
-void EraseCursor(void)
-{
- int off = LastMouseY * FixedInfo.line_length
- + LastMouseX * VarInfo.bits_per_pixel / 8;
- int stride = CURSOR_WIDTH * VarInfo.bits_per_pixel / 8;
- int i;
-
- unsigned char *src = MouseBuffer;
-
- if(!MouseVisible || CurrentCursor < 0 || CurrentCursor >= NUM_CURSORS)
- return;
-
- for(i = 0; i<CURSOR_HEIGHT; i++) {
- memcpy(BackBuffer + off, src, stride);
- src += stride;
- off += FixedInfo.line_length;
- }
-}
-
-static void SaveCursor(int x, int y)
-{
- int bypp, off, stride, i;
- unsigned char *src = MouseBuffer;
-
- if(x < 0)
- LastMouseX = 0;
- else
- if(x > (int)VarInfo.xres - CURSOR_WIDTH)
- LastMouseX = VarInfo.xres - CURSOR_WIDTH;
- else
- LastMouseX = x;
-
- if(y < 0)
- LastMouseY = 0;
- else
- if(y > (int)VarInfo.yres - CURSOR_HEIGHT)
- LastMouseY = VarInfo.yres - CURSOR_HEIGHT;
- else
- LastMouseY = y;
-
- bypp = VarInfo.bits_per_pixel / 8;
- off = LastMouseY * FixedInfo.line_length + LastMouseX * bypp;
- stride = CURSOR_WIDTH * bypp;
- for(i = 0; i<CURSOR_HEIGHT; i++) {
- memcpy(src, BackBuffer + off, stride);
- src += stride;
- off += FixedInfo.line_length;
- }
-}
-
-void DrawCursor(void)
-{
- int i, j, px, py, xoff, xlen, yoff, ylen, bypp, cstride, dstride;
- unsigned char *c;
- const unsigned char *d;
-
- if(!MouseVisible || CurrentCursor < 0 || CurrentCursor >= NUM_CURSORS)
- return;
-
- px = MouseX - CursorsXOffset[CurrentCursor];
- py = MouseY - CursorsYOffset[CurrentCursor];
-
- SaveCursor(px, py);
-
- xoff = 0;
- if(px < 0)
- xoff = -px;
-
- xlen = CURSOR_WIDTH;
- if(px + CURSOR_WIDTH > VarInfo.xres)
- xlen = VarInfo.xres - px;
-
- yoff = 0;
- if(py < 0)
- yoff = -py;
-
- ylen = CURSOR_HEIGHT;
- if(py + CURSOR_HEIGHT > VarInfo.yres)
- ylen = VarInfo.yres - py;
-
- bypp = VarInfo.bits_per_pixel / 8;
-
- c = BackBuffer + FixedInfo.line_length * (py + yoff) + (px + xoff) * bypp;
- cstride = FixedInfo.line_length - bypp * (xlen - xoff);
-
- d = Cursors[CurrentCursor] + (CURSOR_WIDTH * yoff + xoff)*4;
- dstride = (CURSOR_WIDTH - xlen + xoff) * 4;
-
- switch(bypp) {
- case 1:
- {
- const int shift = 8 - REVERSECMAPSIZELOG;
- for(i = yoff; i < ylen; i++) {
- for(j = xoff; j < xlen; j++) {
- if(d[3] < 220)
- *c = ReverseColorMap
- [(d[0]+(((int)(RedColorMap[c[0]]>>8)*d[3])>>8))>>shift]
- [(d[1]+(((int)(GreenColorMap[c[0]]>>8)*d[3])>>8))>>shift]
- [(d[2]+(((int)(BlueColorMap[c[0]]>>8)*d[3])>>8))>>shift];
- c++;
- d+=4;
- }
- d += dstride;
- c += cstride;
- }
- } break;
- case 2:
- {
- uint16_t *e = (void*)c;
- cstride /= 2;
- for(i = yoff; i < ylen; i++) {
- for(j = xoff; j < xlen; j++) {
- if(d[3] < 220)
- e[0] = ((((d[0] + (((int)(((e[0] >> 8) & 0xf8)
- | ((c[0] >> 11) & 0x7)) * d[3]) >> 8)) & 0xf8) << 8)
- | (((d[1] + (((int)(((e[0] >> 3) & 0xfc)
- | ((e[0] >> 5) & 0x3)) * d[3]) >> 8)) & 0xfc) << 3)
- | ((d[2] + (((int)(((e[0] << 3) & 0xf8)
- | (e[0] & 0x7)) * d[3]) >> 8)) >> 3));
-
- e++;
- d+=4;
- }
- d += dstride;
- e += cstride;
- }
- } break;
- case 3:
- case 4:
- for(i = yoff; i < ylen; i++) {
- for(j = xoff; j < xlen; j++) {
- if(d[3] < 220) {
- c[0] = d[0] + (((int)c[0] * d[3]) >> 8);
- c[1] = d[1] + (((int)c[1] * d[3]) >> 8);
- c[2] = d[2] + (((int)c[2] * d[3]) >> 8);
- }
-
- c+=bypp;
- d+=4;
- }
- d += dstride;
- c += cstride;
- } break;
- }
-}
-
-#define MIN(x, y) x < y ? x : y
-void SwapCursor(void)
-{
- int px = MouseX - CursorsXOffset[CurrentCursor];
- int py = MouseY - CursorsYOffset[CurrentCursor];
-
- int minx = MIN(px, LastMouseX);
- int sizex = abs(px - LastMouseX);
-
- int miny = MIN(py, LastMouseY);
- int sizey = abs(py - LastMouseY);
-
- if(MouseVisible)
- DrawCursor();
-
- /* now update the portion of the screen that has changed, this is also
- used to hide the mouse if MouseVisible is 0 */
- if(DisplayMode & GLUT_DOUBLE && ((sizex || sizey) || !MouseVisible)) {
- int off, stride, i;
- if(minx < 0)
- minx = 0;
- if(miny < 0)
- miny = 0;
-
- if(minx + sizex > VarInfo.xres - CURSOR_WIDTH)
- sizex = VarInfo.xres - CURSOR_WIDTH - minx;
- if(miny + sizey > VarInfo.yres - CURSOR_HEIGHT)
- sizey = VarInfo.yres - CURSOR_HEIGHT - miny;
- off = FixedInfo.line_length * miny
- + minx * VarInfo.bits_per_pixel / 8;
- stride = (sizex + CURSOR_WIDTH) * VarInfo.bits_per_pixel / 8;
-
- for(i = 0; i < sizey + CURSOR_HEIGHT; i++) {
- memcpy(FrameBuffer+off, BackBuffer+off, stride);
- off += FixedInfo.line_length;
- }
- }
-}
-
-void glutWarpPointer(int x, int y)
-{
- if(x < 0)
- x = 0;
- if(x >= VarInfo.xres)
- x = VarInfo.xres - 1;
- MouseX = x;
-
- if(y < 0)
- y = 0;
- if(y >= VarInfo.yres)
- y = VarInfo.yres - 1;
- MouseY = y;
-
- EraseCursor();
- SwapCursor();
-}
-
-void glutSetCursor(int cursor)
-{
- if(cursor == GLUT_CURSOR_FULL_CROSSHAIR)
- cursor = GLUT_CURSOR_CROSSHAIR;
-
- EraseCursor();
- MouseVisible = 1;
- CurrentCursor = cursor;
- SwapCursor();
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-27 13:03:07 +0000